Entries |
Document | Title | Date |
20080213651 | Housing for a Sealed Electrochemical Battery Cell - An electrochemical cell with a collector assembly for sealing the open end of a cell container. The collector assembly includes a retainer and a contact spring with a peripheral flange, each having a central opening therein. A pressure release vent member disposed between the retainer and the peripheral flange of the contact spring seals the openings in the retainer and contact spring under normal conditions and ruptures to release pressure from within the cell when the internal pressure exceeds a predetermined limit. | 09-04-2008 |
20080220316 | End cap seal assembly for a lithium cell - An end cap assembly for a primary lithium cell is disclosed. The end cap has a principal application in closing and sealing a primary lithium cell having wound electrodes. The cell may typically have an anode comprising lithium and a cathode comprising iron disulfide (FeS | 09-11-2008 |
20080220317 | Safety Device for Hermetic Seals in Electrochemical Cells - A safety device in hermetic seals in electrochemical cells of the type having a general construction comprising a metallic container ( | 09-11-2008 |
20090029238 | ELECTROCHEMICAL CELL HAVING POLYMERIC MOISTURE BARRIER - An alkaline electrochemical cell is provided which employs a polymeric moisture barrier material disposed in the collector assembly to substantially prevent the passage of moisture into the cell. The polymeric vapor barrier material may include a polyvinylidene chloride applied to the outer cover, the inner neutral cover, or the top side of the seal, to prevent the ingress and egress of moisture. The polyvinylidene chloride may be applied as a preformed thin sheet. The polymeric material exhibits a very low water vapor transmission rate of less than 1.0 (grams×mil)/(100 inches | 01-29-2009 |
20090053585 | Battery Pack - A battery cell | 02-26-2009 |
20090068548 | Lithium Ion Prismatic Cells - The disclosure relates to prismatic lithium ion secondary cells. Some cells include venting features and/or multiple connecting tabs. In some cells the cathode includes LiFePO | 03-12-2009 |
20090068549 | Nickel-metal hydride secondary battery module and secondary battery module manufacturing method - A nickel-metal hydride secondary battery includes: a plurality of power generating elements each having a negative plate containing hydrogen absorbing alloy; a battery case provided with partition walls and a plurality of compartments arranged adjacently on both sides of each partition wall, each of the compartments accommodating each power generating element, and the compartments allowing gas intercommunication between compartments through communication holes formed in the partition walls; and at least one of safety valves placed on the battery case, the safety valves being less in number than the number of the compartments; wherein each of the communication holes has a hole sectional area per battery module capacity in a range 0.03 to 0.30 mm | 03-12-2009 |
20090081530 | Secondary battery - In a secondary battery ( | 03-26-2009 |
20090098443 | BATTERY PACK AND METHOD FOR PRODUCING THE SAME - A battery pack includes a battery including a battery element covered with a packaging member, a battery protection circuit board, a covering material, and a rippable portion formed in a part of the covering material. The battery element includes a positive electrode and a negative electrode which are spirally wound or stacked through a separator. The covering material collectively covers the battery and the battery protection circuit board. The rippable portion rips open due to a gas generated from the battery in the event of an abnormal condition to form a gas release hole for releasing the gas outside the battery pack. | 04-16-2009 |
20090117451 | CAP ASSEMBLY AND SECONDARY BATTERY USING THE SAME - A secondary battery comprising: an electrode assembly; a can to house the electrode assembly; and a cap assembly to seal the can. The cap assembly includes a vent plate. The vent plate includes a concave deforming portion, a protrusion formed in the center of the deforming portion, and a notch formed around the deforming portion. | 05-07-2009 |
20090162737 | ELECTROCHEMICAL STORAGE CELL WITH BLOW OUT VENTS - An electrochemical storage cell is disclosed which includes at least one cathode sheet, at least one anode sheet and at least one separator sheet combined to make a core. The core is housed within a rectangular shell with four sides and two ends, sealed with an air-tight seal. The cell further includes a blow out vent in at least one of the two ends of the shell. This blow out vent is adapted to open and release excess pressure above a predetermined level to thereby prevent catastrophic rupture of the shell. | 06-25-2009 |
20090208820 | ELECTROCHEMICAL ELEMENT - To operate a safety mechanism normally even when an accident happens. For this object, an electrochemical element includes an exhaust valve that operates when an internal pressure in a casing | 08-20-2009 |
20090253026 | Electrical Battery Comprising Flexible Generating Elements and a System for the Mechanical and Thermal Conditioning of Said Elements - An electrical battery includes a plurality of electrical energy generating elements formed by at least one electrochemical cell that is packaged in a flexible sealed envelope, and a system for the mechanical and thermal conditioning of the elements. The conditioning system forms a structural body made from thermally conductive material. The body has two longitudinal members and a plurality of cross-members connecting the longitudinal members so as to form between the cross-members housings in which respectively a generating element is disposed. The body includes a circulation path for a thermal conditioning fluid. The path has two channels, respectively upstream and downstream, that are formed respectively in a longitudinal member and passages formed in each of the cross-members. The passages are in fluid communication on each side with respectively the upstream channel and the downstream channel. | 10-08-2009 |
20090269654 | Prismatic Storage Battery Or Cell With Flexible Recessed Portion - A battery includes a cell casing that has recessed portion on a major surface of the casing, the recessed portion being substantially planar and bordering a remainder of the major surface at ridge portions on at least three sides of the recessed portion, whereby the recessed portion, the ridge portions, and the remainder of the major surface cooperate under an increase of gauge pressure to cause a plane defined by a boundary between the ridge portions and the remainder of the major surface to move. | 10-29-2009 |
20090274949 | NONAQUEOUS ELECTROLYTE BATTERY - A nonaqueous electrolyte battery includes an outer case having one open end portion, a battery element held in the outer case, and a battery lid which is disposed on the one open end portion and which is provided with a protrusion portion protruded toward the outside of the battery, at least two opening portions disposed in the protrusion portion, and release portions disposed adjoining the respective opening portions so as to deform in accordance with an increase in internal pressure of the battery. | 11-05-2009 |
20090305114 | Secondary battery - A secondary battery prevents shorts between electrodes by discharging an electrode assembly downward through a can provided with notches at a lower part thereof when the battery is vertically compressed. The secondary battery includes: an electrode assembly; a can having an upper opening to receive the electrode assembly and a notched part at a lower part thereof; and a cap assembly to seal the can. | 12-10-2009 |
20100015508 | CYLINDRICAL SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME - Provided is a cylindrical secondary battery including a cylindrical exterior can having an open top portion into which an electrode assembly and electrolyte can be inserted and having an electrode tap which is drawn from the electrode assembly and extends upward; and a cap assembly assembled as an integrated structure, having an outer side surface welded and fixed to an inner side surface of an upper portion of the exterior can, and having a bottom surface joined and electrically connected to the electrode tap to transmit electric current generated by the electrode assembly to the outside. In addition, provided is a method of manufacturing a cylindrical secondary battery. The method includes assembling a cap assembly as an integrated structure; inserting an electrode assembly and electrolyte into a cylindrical exterior can having an open top portion; joining and electrically connecting an electrode tap, which is drawn from the electrode assembly, to a bottom surface of the cap assembly; inserting the cap assembly into the open top portion of the exterior can and thus bending the electrode tap; and welding an outer side surface of the cap assembly to an inner side surface Of an upper portion of the exterior can. | 01-21-2010 |
20100055545 | VENTING MECHANISMS FOR BATTERY CELLS - The provision of improved venting in battery cells by way of better preventing pressure buildup in the cells. Via different variants of the present invention, the following advantages are achieved: | 03-04-2010 |
20100081040 | SAFETY DEVICE FOR RECHARGEABLE BATTERY - A safety device for a rechargeable battery includes a safety plate having multiple first notches defined in an underside thereof and a positioning plate is securely engaged with the central hole defined through the safety plate. The positioning plate has its outer periphery securely engaged with the inside of the casing of the battery and includes multiple second notches defined in an underside thereof. A cap has its outer periphery connected to the positioning plate and includes apertures defined therethrough. The safety plate is broken at the first notches to allow the positioning plate to be separated from the safety plate when the inner pressure exceeds the pre-set pressure when the battery is overly charged. When the pressure continues to increase, the positioning plate is broken at the second notches and the pressure within the cap can be escaped via the apertures. | 04-01-2010 |
20100086835 | RECHARGEABLE BATTERY - A rechargeable battery according to the present invention includes an electrode assembly that includes a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode, a case that contains the electrode assembly and a cap assembly that is connected to the case. The positive electrode includes a current collector and a positive active material layer that includes an NCM-based positive active material disposed at the collector. The cap assembly includes a vent plate having a notch, and a current interrupt portion that interrupts electrical connection in a case of an increase in pressure inside the case. When a current interrupt pressure of the current interrupt portion is “A,” a vent fracture pressure at which the vent plate fractures at the notch is “B,” and the capacity of the rechargeable battery is “X,” they satisfy a formula of A/B=1.22−0.39X+D (−0.08≦D≦0.08). | 04-08-2010 |
20100099014 | SAFETY VALVE FOR BATTERY - A safety valve for battery has a valve body ( | 04-22-2010 |
20100136386 | BATTERY CELL CONTAINMENT AND VENTING - A battery has a casing holding plural cells and a mesh wrapped around the cells to contain pieces of an exploding cell within the casing. To prevent overpressurization of the casing from the gas emitted by an exploding cell, a pressure relief feature is provided that allows gas to pass through battery casing. | 06-03-2010 |
20100136387 | Cell cap assembly with recessed terminal and enlarged insulating gasket - A simplified cell design is provided for a battery utilizing the 18650 form-factor, the simplified cell design reducing manufacturing cost, battery weight and the risk of shorting between the battery case and the battery terminal. In the cap assembly of the disclosed battery, the safety vent element, which is recessed relative to the top of the cell case, also serves as the battery terminal. Additionally, the insulating gasket positioned between the cell case and the cap assembly is designed to cover a large portion of the outer surface of the safety vent/battery terminal. | 06-03-2010 |
20100136388 | CAP ASSEMBLY AND SECONDARY BATTERY USING THE SAME - A cap assembly for a battery and a battery incorporating the cap assembly. The cap assembly includes a plate that connects the electrodes of the bare cell of the battery. The cap assembly includes a vent member that includes a protrusion that is physically connected to the plate. Excess pressure within the bare cell results in the protrusion disconnecting from the plate thereby interrupting current. The vent further includes two circular notches, an inner notch and an outer notch. The vent further includes a cross notch that extends radially outward so as to intersect and extend beyond both the first and second notches. The notches are configured to release when the pressure within the bare cell exceeds a burst pressure. | 06-03-2010 |
20100159308 | SECONDARY BATTERY - A secondary battery having a current interrupt device (CID) between a negative current collecting plate and a case of the secondary battery. The secondary battery includes: an electrode assembly including a positive electrode, a separator, and a negative electrode; a case housing the electrode assembly; a cap assembly coupled to the case for sealing the case; a positive current collecting plate connected to the positive electrode and the cap assembly; an insulator in the case adjacent an end plate of the case; and a negative current collecting plate connected to the negative electrode and the end plate of the case, the end plate being curved convexly toward an inner cavity of the case. | 06-24-2010 |
20100167107 | Rechargeable battery - A rechargeable battery including: an electrode assembly with a positive electrode, a negative electrode and a separator interposed therebetween; a case housing the electrode assembly; a cap plate connected to the case; a first terminal and a second terminal protruding from an upper part of the cap plate; and a current interrupt module electrically connected to the electrode assembly and the first terminal, wherein the current interrupt module includes a current interrupt unit coupled to the electrode assembly and the current interrupt unit is configured to uncouple from the electrode assembly when an internal pressure of the case increases. | 07-01-2010 |
20100178539 | Modular CID Assembly for a Lithium Ion Battery - A modular current interrupt device includes an electrically-conductive rupture disc, an electrically-conductive pressure disc attached to the rupture disc to form an electrical pathway. An electrically-insulating ring partitions a perimeter of the rupture disc from a perimeter of the pressure disc, and a seating element secures the electrically-insulated ring to the pressure disc. At least one of the rupture disc and electrically-insulating ring defines a conduit, whereby exposure of one side of the pressure disc to sufficient force through the conduit causes the pressure disc to separate from the rupture disc to thereby sever the electrical pathway. A low pressure current interrupt device (CID) activates at a minimal threshold internal gauge pressure in a range of, for example, between about 4 kg/cm | 07-15-2010 |
20100209746 | SEALED BATTERY - A sealed battery ( | 08-19-2010 |
20100233519 | RECHARGEABLE BATTERY - A rechargeable battery configured to stably and easily interrupt a current includes: an electrode assembly including a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode; a case containing the electrode assembly therein and having a first opening at one end thereof; and a first plate coupled to the case and sealing the first opening, the first plate electrically connected to the electrode assembly, wherein the first plate includes a wrinkle portion configured to deform for disconnecting the first plate from the electrode assembly when an internal pressure of the case is greater than a reference pressure. | 09-16-2010 |
20100233520 | BATTERY - Provided is a battery capable of providing both fixing durability of a protective film during normal use and peeling easiness of the protective film during operation of a safety valve. A lithium ion secondary battery ( | 09-16-2010 |
20100266881 | BATTERY CELL OF IMPROVED SAFETY - Disclosed herein is a battery cell constructed in a structure in which an electrode assembly is mounted in a battery case made of a laminate sheet including a metal layer and a resin layer, and the battery case is thermally welded along the edge of a receiving part thereof to form a sealing part, wherein a weak part is formed at a portion of the sealing part (‘an electrode lea correspondence portion’) corresponding to one of electrode leads (a, b) connected to the electrode assembly, e.g., the electrode lead (a) having relatively low flexibility, the weak part being physically deformed, such that internal gas is discharged outside through the weak part, when predetermined pressure is applied to the weak part, and the weak part is not formed at an electrode lead correspondence portion of the other electrode lead (b). | 10-21-2010 |
20100279156 | RECHARGEABLE BATTERY - A rechargeable battery includes an electrode assembly, a case containing the electrode assembly and a cap assembly coupled to the case. The electrode assembly includes a first electrode, a second electrode, and a separator between the first electrode and the second electrode. The cap assembly includes a cap plate and a deformable plate attached to the cap plate and configured to deform in response to an increase in pressure inside the case to electrically couple the first electrode and the second electrode to each other. | 11-04-2010 |
20100297481 | ADDITIVES FOR NON-AQUEOUS ELECTROLYTE AND SECONDARY BATTERY USING THE SAME - Disclosed are an electrolyte for a secondary battery, and a secondary battery including the same, the electrolyte including an electrolyte salt; an electrolyte solvent; and a compound generating heat through oxidation at voltages higher than drive voltage of a cathode, wherein the compound can decompose or evaporate electrolyte components by oxidation heat, thereby causing gas generation. Also, the compound is included in an internal pressure increase accelerant for a battery. Upon overcharge, since a compound subjected to oxidation at voltages higher than normal drive voltage of a cathode generates heat, electrolyte components can be decomposed or evaporated, thereby generating gas by the oxidation heat. Accordingly, it is possible to operate a safety means of a battery, without using an internal pressure increasing material directly generating gas through oxidation at overcharge voltage as the electrolyte additive, and thus to improve the overcharge safety of a secondary battery. | 11-25-2010 |
20100316894 | Integrated battery pressure relief and terminal isolation system - A system for integrating the venting feature of a battery with a means for simultaneously disconnecting the cell from the battery pack, thereby isolating the cell, is provided. The provided battery interconnect system is comprised of a battery, a connector plate for electrically coupling the battery to a battery pack, and an interruptible electrical connector for electrically coupling the connector plate to a battery terminal vent. The vent, defined by scoring on the battery terminal, ruptures when the internal battery pressure exceeds the predefined battery operating range, causing the interruptible electrical connector to break and disrupt electrical continuity between the connector plate and the battery terminal. | 12-16-2010 |
20110003185 | Sealing Frame for Cells in a Battery with a Thermally Active Compensating Element - Sealing frame ( | 01-06-2011 |
20110008654 | CAP ASSEMBLY OF IMPROVED SAFETY AND CYLINDRICAL SECONDARY BATTERY EMPLOYED WITH THE SAME - Disclosed herein is a cap assembly loaded on an open upper end of a cylindrical container of a battery in which an electrode assembly is mounted in the cylindrical container, the cap assembly including a safety vent having a predetermined notch configured to rupture by high-pressure gas generated in the battery, a current interruptive device coupled to a bottom of the safety vent by welding for interrupting current when internal pressure of the battery increases, and a current interruptive device gasket for surrounding an outer circumference of the current interruptive device, wherein the current interruptive device includes two or more through holes for gas discharge, the through holes being formed such that the sum of areas of the through holes is equal to 20% to 50% of an entire area of the current interruptive device. When high-pressure gas is generated in the battery, the cap assembly effectively interrupts current and rapidly discharges the gas, thereby greatly improving safety of the battery. | 01-13-2011 |
20110014507 | Housing for a Sealed Electrochemical Battery Cell - An electrochemical cell with a collector assembly for sealing the open end of a cell container. The collector assembly includes a retainer and a contact spring with a peripheral flange, each having a central opening therein. A pressure release vent member disposed between the retainer and the peripheral flange of the contact spring seals the openings in the retainer and contact spring under normal conditions and ruptures to release pressure from within the cell when the internal pressure exceeds a predetermined limit. | 01-20-2011 |
20110020675 | SAFETY DEVICE FOR USE IN A LITHIUM ION BATTERY - A safety device for use in a lithium ion battery includes a top cover defining a central hole and a number of peripheral holes set around the central hole, a rupture plate fixed to the bottom surface of the top cover and sealing the peripheral holes and the central hole, and a vent plate defining an air hole electrically connected to the rupture plate via an electrical connection point. Other part of the rupture plate is electrically insulated from the vent plate via an insulating gasket. The central hole and the peripheral holes around the central hole can prevent the deformed rupture plate from blocking the air vent passage of the lithium ion battery to improve the safety performance of the lithium ion battery. | 01-27-2011 |
20110039136 | RECHARGEABLE BATTERY - A rechargeable battery according to an exemplary embodiment of the present invention includes an electrode assembly, a case containing the electrode assembly, and a cap assembly. The electrode assembly includes a first electrode, a second electrode, and a separator between the first and second electrodes. The cap assembly is coupled to the case. The cap assembly includes a tab that is electrically connected to the first electrode and a deformable plate that is electrically connected to the second electrode. The deformable plate also includes a notch that is opened due to an increase of pressure. The deformable plate deforms as a result of increased pressure and electrically contacts the first tab, short circuiting the rechargeable battery. | 02-17-2011 |
20110052948 | Cell Cap Assembly with Desirable Safety Performance - The present invention provides a cell cap assembly including a grommet defining a through hole, a stripper contact plate defining at least one gas hole securely received in the through hole, an rupture plate securely positioned in the through hole and in electrical connection with the stripper contact plate, and an end cap electrically connected with the rupture plate. The rupture plate includes an outer ring portion, a bent portion extending from the outer ring portion, and a planar recessed portion defining a recess formed at one end of the bent portion. | 03-03-2011 |
20110076528 | SECONDARY BATTERY - There is provided a secondary battery enabling an electrode terminal to be deformed in an internal direction of a can by preventing the upper plate of the can from being deformed in an internal direction of the can when a compression is applied in a direction perpendicular to the longitudinal axis. In one embodiment, a secondary battery includes a can having one opened portion to accommodate an electrode assembly. An upper plate is positioned at the opened portion of the can and has a pair of short side portions and a pair of long side portions connected both sides of the short side portions. In the secondary battery, a short circuit preventing portion formed thinner than other regions while crossing between the long side portions is further formed at a central portion of the bottom surface of the upper plate. Accordingly, the stability of the secondary battery can be improved. | 03-31-2011 |
20110076529 | FILM-COVERED ELECTRICAL DEVICE AND ASSEMBLED BATTERY - The film-covered electrical device of the present invention includes covered portion (S | 03-31-2011 |
20110111271 | Battery Can Having Off-Center Vent - An electrochemical cell is provided with an enhanced pressure relief vent formed in a closed end of the cell container that allows for effective venting of gas from the closed end of the container. The cell includes a container having a first end, a second end, a side wall extending between the first and second ends, and an end wall extending across the first end. The cell has a positive electrode, a negative electrode, and an aqueous alkaline electrolyte, all disposed in the container. The cell further includes a pressure relief vent mechanism having an offset C-shaped reduced thickness groove formed in the end wall of the container. A cover can be welded to the closed end wall of the container over the pressure relief vent mechanism. | 05-12-2011 |
20110117397 | CYLINDRICAL LITHIUM SECONDARY BATTERY - A cylindrical lithium secondary battery includes: an electrode assembly with a center pin at a center of the electrode assembly; a can accommodating the electrode assembly; and a cap assembly coupled to a top of the can, wherein at least one end of the center pin is contoured to deform during collision between the center pin and a bottom surface of the can or the cap assembly and to absorb the impact so as to prevent the center pin from escaping the cylindrical lithium secondary battery. | 05-19-2011 |
20110117398 | CAP-UP PLATE AND SECONDARY BATTERY HAVING THE SAME - A cap-up plate and a cylindrical secondary battery having the cap-up plate are disclosed. In one embodiment, the cap-up plate includes i) a base plate and ii) a terminal extending from a portion of the base plate, wherein the terminal has a flat portion substantially parallel with the base plate, and wherein the flat portion comprises an end which is located over the portion of the base plate. The end of the flat portion may overlap with the portion of the base plate along a direction substantially perpendicular to the base plate. | 05-19-2011 |
20110123844 | PRESSURE-RELIEF MECHANISM TO IMPROVE SAFETY IN LITHIUM-POLYMER BATTERY CELLS - The disclosed embodiments relate to a battery cell which includes a weakness for relieving pressure. This battery cell includes a jelly roll comprising layers which are wound together, including a cathode with an active coating, a separator and an anode with an active coating. The jelly roll also includes a first conductive tab coupled to the cathode and a second conductive tab coupled to the anode. The jelly roll is enclosed in a flexible pouch, wherein the first and second conductive tabs extend through seals in the pouch to provide terminals for the battery cell. This pouch includes a weakness which yields when internal pressure in the pouch exceeds a threshold to create a hole which releases the internal pressure. | 05-26-2011 |
20110123845 | BATTERY PACK, VEHICLE EQUIPPED WITH THE BATTERY PACK, AND DEVICE EQUIPPED WITH THE BATTERY PACK - A secondary battery includes a cylindrical battery case, a positive and negative electrode body group, a top plate and a battery lid connected to first and second electrode bodies of the electrode body group respectively. The secondary battery further includes a current collector placed on an end of the electrode body group on the top plate side and connected to the first electrode body of the electrode body group and a spacer placed between the top plate and the current collector. The top plate is partly formed with a thin portion. The spacer is formed with through holes in positions corresponding to the thin portion. The portion of the current collector corresponding to the thin portion is in contact with the thin portion through the through hole. The thin portion is deformed when the internal pressure of the battery case rises, thereby breaking electric connection between the top plate and the current collector. | 05-26-2011 |
20110135976 | RECHARGEABLE BATTERY - A rechargeable battery includes: an electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode; a case containing the electrode assembly; and a cap assembly coupled to the case. The cap assembly includes a cap plate and a short circuit member attached to the cap plate. The short circuit member includes a portion having a different thickness from another portion of the short circuit member. | 06-09-2011 |
20110151292 | SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF - There are a secondary battery having a pouch-type outer casing and a manufacturing method thereof. In one embodiment, a secondary battery includes an electrode assembly and an outer casing. The electrode assembly has positive and negative electrode plates, a separator interposed therebetween, and positive and negative electrode tabs having one ends respectively connected to the positive and negative electrode plates. The outer casing accommodates the electrode assembly so that the other ends of the positive and negative electrode tabs are extracted from a first side to the exterior thereof. The outer casing has a sealing portion sealed at least twice. The sealing portion is primarily sealed to be fractured under a predetermined internal pressure of the outer casing. After the aging of a battery, the sealing portion is fractured under the predetermined internal pressure, thereby exhausting internal gas. After the exhaustion of the internal gas, the sealing portion is secondarily sealed. | 06-23-2011 |
20110183163 | Sealed Battery Cell and Manufacturing Method Thereof - A sealed battery cell including an anti-explosion mechanism disposed between an electrode group and a top cover, and that deforms or cleaves due to elevation of internal pressure in the battery cell, the electrode group being comprised of a positive electrode and a negative electrode that are laminated together; wherein the anti-explosion mechanism includes a diaphragm, a connection plate welded to the diaphragm, and a connection lead welded to the connection plate; and the connection plate includes a thinner portion where a spot at which the connection lead is connected is formed as thin, and a thicker portion where the thinner portion is not formed, and a lower surface of the thinner portion is formed as coincident with a lower surface of the thicker portion, or as hollowed out from the lower surface of the thicker portion. | 07-28-2011 |
20110183164 | Housing for a Sealed Electrochemical Cell - An electrochemical cell with a collector assembly for sealing the open end of a cell container. The collector assembly includes a retainer and a contact spring with a peripheral flange, each having a central opening therein. A pressure release vent member disposed between the retainer and the peripheral flange of the contact spring seals the openings in the retainer and contact spring under normal conditions and ruptures to release pressure from within the cell when the internal pressure exceeds a predetermined limit. | 07-28-2011 |
20110200854 | RECHARGEABLE BATTERY - A rechargeable battery according to an embodiment of the present invention includes: an electrode assembly; a battery case accommodating the electrode assembly; and a cap assembly comprising: a cap plate comprising a top portion and at least one opening; and a vent member comprising two or more notches and a supporting portion, wherein the vent member is configured to break at the two or more notches and bend along two or more lines adjacent to the supporting portion. | 08-18-2011 |
20110206957 | Rechargeable battery - A rechargeable battery includes a battery case surrounding an electrode assembly. The battery case may include a cap plate having a vent hole, the cap plate being attached to the battery case, a vent plate disposed over and covering the vent hole, and a member protruding from an area of the cap plate surrounding the vent hole, the vent plate being on the member. | 08-25-2011 |
20110206958 | SEALED BATTERY - A sealed battery ( | 08-25-2011 |
20110212350 | Secondary Battery - A secondary battery includes a gas release valve located at a battery container housing a power generating element, wherein: the gas release valve includes a valve disk caused to expand outward by internal pressure in the battery container; wherein a plurality of grooves are formed at the valve disk in order that a plurality of valve element pieces become fractured along the grooves when the valve disk expands due to the internal pressure; and a scatter-deterring portion is formed at the valve disk in order to prevent the fractured valve element pieces along the grooves from scattering away from the valve disk. | 09-01-2011 |
20110217572 | DOUBLE ACTING VENTING MECHANISM FOR BATTERY CELLS - Embodiments of the invention provide battery cells having a double acting venting mechanism that provides reliable venting even in response to various undesirable events. Embodiments of the invention ensure that safe venting can take place, as necessary, even if the battery cell encounters internal and/or external pressure and/or deformation. | 09-08-2011 |
20110223449 | SAFETY DEVICE FOR A SEALED CELL - A safety device for a sealed cell ( | 09-15-2011 |
20110236734 | SAFETY VALVE FOR GASTIGHT BATTERY AND GASTIGHT BATTERY USING SAFETY VALVE - A safety valve for a battery which is mounted on a sealing plate for sealing an opening portion of a gastight battery case, and which can rapidly release a gas in the battery when a battery internal pressure is elevated is provided. In a safety valve for a gastight battery, a thin-wall valve element is formed on a sealing plate which seals an opening portion of a battery case, and the valve element is opened when a battery internal pressure becomes a predetermined value or more so as to release a gas in the battery to the outside of the battery. The safety valve includes: an outer annular groove formed of an annular thin wall which is formed on the periphery of the valve element and is provided for releasing the whole valve element; an inner annular groove formed of an annular thin wall which is arranged in an area inside the outer annular groove; and a connecting groove formed of a straight thin wall which connects the outer annular groove and the inner annular groove to each other. A wall thickness of the inner annular groove and a wall thickness of the connecting groove are set larger than a wall thickness of the outer annular groove. | 09-29-2011 |
20110244278 | DEGASSING SYSTEM FOR AN ACCUMULATOR, AND ACCUMULATOR HAVING A DEGASSING SYSTEM - A degassing system for a housing of an accumulator includes a labyrinth bolt having a bolt wall in which a plurality of channels are provided, which extend from the bolt interior toward outlets which are arranged in an axial section of the bolt wall. The degassing system also includes a labyrinth corso having a corso wall which, in the installed state, runs around the axial section of the bolt wall such that a gap is formed in the axial section between the bolt wall and the corso wall. The degassing system further includes a gas permeable membrane, which is arranged on an upper face of the labyrinth bolt. | 10-06-2011 |
20110244279 | END CAP SEAL FOR AN ELECTROCHEMICAL CELL - An end cap seal assembly for an electrochemical cell such as an alkaline cell is disclosed. The end cap assembly comprises a metal support disk and underlying insulating sealing disk and a metal end cap overlying the metal support disk. The edge of the end cap and metal support disk is captured by the crimped edge of the insulating sealing disk. The support disk has a downwardly extending wall with at least one aperture therethrough. The insulating disk is preferably composed of a polyetherurethane material and may have a slanted downwardly extending wall forming a rupturable membrane which underlies and abuts the inside surface of the downwardly extending wall of the support disk. A portion of the rupturable membrane underlies and abuts the aperture in the downwardly extending wall of the support disk. The rupturable membrane pushes through said aperture and ruptures when gas pressure within the cell exceeds a predetermined level. | 10-06-2011 |
20110269000 | SAFETY VALVE AND MANUFACTURING METHOD THEREOF, SEALED BATTERY AND MANUFACTURING METHOD THEREOF, VEHICLE, AND BATTERY MOUNTING DEVICE - A safety valve of the invention including a cleavable groove is provided in a battery case of a sealed battery containing a power generating element inside. The cleavable groove is partly formed with a measuring groove having a width wider than other portions. Even if other portions of the cleavable groove have fairly small groove width, a groove width of the cleavable groove can be obtained and determined the quality by measuring a groove width of the measuring groove. Thereby, a safety valve and a manufacturing method thereof, a sealed battery and a manufacturing method thereof, a vehicle, and a battery mounting device are provided to achieve less variation of valve opening pressure and stable product quality, as well as reliably assure the good quality. | 11-03-2011 |
20110287286 | Secondary battery - A secondary battery includes a case configured to accommodate an electrode assembly, a safety vent on a first side of the case, and a film unit disposed on the first side of the case, the film unit including a first film unit covering at least a part of the safety vent, the first film unit including a break unit, and a second film unit extending from the first film unit, the second film unit being adhered to the case. | 11-24-2011 |
20110311847 | Secondary Battery - There is proposed a battery with a large capacity that excels in safety. The safety valve is disposed to cover at least a portion of the center line of the lid plate between the pair of terminals for the positive electrode and the negative electrode. The distance from the center line of the lid plate to end portions of the components to be energized on the safety valve side is equal to or less than the distance from the center line of the lid plate to the outermost circumference of the safety valve. The shadow area obtained by projecting an opening portion of the safety valve in operation onto the plane of the lid plate does not overlap with the respective shadow areas obtained by projecting the electrically connected components, such as the external output terminals for the positive electrode and the negative electrode, onto the plane of the lid plate. | 12-22-2011 |
20120021262 | BATTERY, VEHICLE, AND BATTERY-OPERATED EQUIPMENT - A lithium secondary battery is equipped with a non-recovering safety valve comprising a valve, which ruptures when the valve opens, and a valve surrounding part that surrounds the valve. The safety valve is further disposed in the valve surrounding part, and has an anti-scattering means that prevents shards, which are produced by the valve rupturing when the valve opens, from scattering outside the battery. The anti-scattering means constitutes an anti-fragmentation part of a form that prevents shards from fragmenting from the valve surrounding part. | 01-26-2012 |
20120040213 | Rechargeable battery - A rechargeable battery including an electrode assembly, the electrode assembly including an anode, a cathode, and a separator therebetween; a case accommodating the electrode assembly, the case having an opening; a cap plate coupled to the opening of the case, the cap plate having a discharge hole; and a vent plate coupled to the discharge hole, wherein the vent plate includes a main notch part corresponding to the discharge hole, and a sub-notch part separated from the main notch part. | 02-16-2012 |
20120040214 | SECONDARY BATTERY - A battery, including a housing defining an interior space, the housing including a safety vent, the safety vent having a concave shape such that a central portion of the safety vent protrudes toward the space, a region of the safety vent that protrudes farthest toward the space being about midway between peripheral edges of the safety vent. | 02-16-2012 |
20120040215 | BATTERY SAFETY VENT AND BATTERY WITH THE SAME - The present invention disclosed a battery safety vent comprising: an explosion-proof film fixed on a battery cover plate, a safety vent cover covering the explosion-proof film and having a pressure release aperture, and an explosion-proof pin disposed on top of the safety vent cover, in which a free head of the pin is blunt and points to the explosion-proof film. The present invention further disclosed a battery having the above battery safety vent. | 02-16-2012 |
20120064379 | BATTERY MODULE - A battery module includes a plurality of cells and a plurality of holders. The plurality of cells are parallelly arranged in a row at intervals. The plurality of cells have explosion-proof valves which are provided therein and which are capable of opening upon an increase in an inner pressure in the plurality of cells. The plurality of holders are arranged among the cells so as to hold the cells. The holders have holder pieces which are integrally formed therein and which cover at least part of the explosion-valves so as to prevent emissions from the explosion-proof valves from being released in all directions. | 03-15-2012 |
20120077062 | VENT FOR ELECTROCHEMICAL CELL - An electrochemical cell includes a housing having a first end and a vent located at the first end that is configured to deploy from the housing to allow the expulsion of gases from within the cell. The electrochemical cell also includes at least one projection extending outward from the first end adjacent the vent. The at least one projection is configured to prevent accidental deployment of the vent. | 03-29-2012 |
20120088128 | SEALED BATTERY AND VEHICLE - A safety valve ( | 04-12-2012 |
20120114987 | BATTERY - A battery includes: an electrode stacked body; a battery case that accommodates the electrode stacked body; positive and negative electrode terminals that are provided so as to communicate inside and outside of the battery case with each other; a lead that electrically connects tabs of the electrode stacked body to the electrode terminals; and an insulated lead insulating cover in which a space is formed so that the lead enters and a terminal through-hole is formed so that one end of the electrode terminal enters the space therethrough. An insulated lead insulating cover includes a first cover component and a second cover component that cooperatively form the space and the terminal through-hole with each other, and the first cover component and the second cover component respectively include engagement portions engaging removable with each other. | 05-10-2012 |
20120114988 | SEALED BATTERY - A sealed battery is provided in which a case is partially provided with a safety valve that is provided with a thin portion, which is formed thinner than the peripheral portion of the safety valve. A portion of the safety valve surrounding the thin portion is provided with a slit for preventing heat conduction from the other portions of the case to the thin portion, said slit being formed so as to surround the thin portion. | 05-10-2012 |
20120141844 | Galvanic Cell Having Overpressure Protection - A single cell having a casing formed from a first casing side part, a second casing side part and a casing frame, in which casing an electrolyte and an electrochemically active electrode foil unit are arranged, wherein the casing comprises an overpressure protection. The first casing side part includes a casing side part segment going at least sectionally over a length of the single cell, which casing side part segment is angled down in relation to the first casing side part in the direction of the cell interior and in which the overpressure protection is arranged and a venting opening is incorporated into the casing frame in a region of the overpressure protection. | 06-07-2012 |
20120156533 | Air valve for energy storage device and energy storage device including the same - Disclosed herein are an air valve for an energy storage device and an energy storage device including the same. The air valve for an energy storage device includes: a body including a gas inlet and a gas outlet disposed to be spaced from each other; and a piston included in an inner portion of the body and blocking or opening a path between the gas inlet and the gas outlet, wherein when pressure in the inner portion of the energy storage device increases due to gas generation therein, the piston moves to open the path between the gas inlet and the gas outlet, and when the pressure in the inner portion of the energy storage device decreases due to discharge of the gas in the inner portion of the energy storage device or reduction in the gas generation, the piston moves to block the path between the gas inlet and the gas outlet. | 06-21-2012 |
20120164495 | SEALED BATTERY - A sealed battery includes: a columnar battery case encapsulating a chargeable/dischargeable electrode assembly and electrolyte in an interior and having a vent that cleaves up when a pressure in the interior exceeds a threshold; a cover that covers at least a portion of an outer surface of the vent of the battery case to prevent the vent from being covered with resin which is formed on the battery case; and a temperature protection device electrically connected with a terminal of the battery case and capable of blocking electric current when a temperature exceeds a threshold. The cover includes an overhang located to cover at least a portion of the temperature protection device when the temperature protection device is mounted on the cover. The temperature protection device is at least partially covered with the overhang and, together with the cover, covered with the resin. | 06-28-2012 |
20120196162 | STORAGE ELEMENT - An external terminal having an exposed surface which is exposed to the outside from a package, a current collector which is disposed inside of the package and is connected to the external terminal, and an electrode assembly which is disposed inside of the package and is connected to the current collector are provided. The package includes a safe valve and a protection member covering the safe valve. The protection member includes a space portion formed between the protection member and the safe valve, and a communicating portion communicating the space portion and the periphery of the protection member. | 08-02-2012 |
20120208051 | ALKALINE SECONDARY BATTERY - An alkaline secondary battery of the present invention includes: a cylindrical battery case | 08-16-2012 |
20120270080 | Integrated Battery Pressure Relief and Terminal Isolation System - A system for integrating the venting feature of a battery with a means for simultaneously disconnecting the cell from the battery pack, thereby isolating the cell, is provided. The provided battery interconnect system is comprised of a battery, a connector plate for electrically coupling the battery to a battery pack, and an interruptible electrical connector for electrically coupling the connector plate to a battery terminal vent. The venting region, defined by scoring on the battery terminal, ruptures when the internal battery pressure exceeds the predefined battery operating range, causing the interruptible electrical connector to break and disrupt electrical continuity between the connector plate and the battery terminal. | 10-25-2012 |
20120276423 | BATTERY SYSTEM - A battery system includes a battery module that has a plurality of batteries which are provided with release portions each for releasing internal gas when an internal pressure is increased, and an exhaust portion which is provided with an opening portion and guides gas released from the release portions to the opening portion, a non-resettable switch element which is provided at a position where the guided gas passes in a vicinity of the opening portion, and is changed from a first state preset as one of an opened state and a closed state into a second state as the other one of the opened state and the closed state when a preset reference temperature or higher is reached, and a high-temperature abnormality determination unit which determines that the battery module has an abnormality when the switch element is in the second state. | 11-01-2012 |
20120282499 | ELECTROCHEMICAL CELL - An electrochemical cell has an electrode stack, which is sealed off by a sheath, in particular in a gas-tight and/or liquid-tight manner, and at least one pressure-relief device, in particular in the form of a desired breaking point, wherein the pressure-relief device has a rupture diaphragm, which closes an aperture in the sheath. | 11-08-2012 |
20120315515 | RECHARGEABLE BATTERY - A rechargeable battery according to an exemplary embodiment includes an electrode assembly having a positive electrode and a negative electrode, a case in which the electrode assembly is installed, a cap plate coupled with the case, a short-circuit member provided in a short-circuit hole formed in the cap plate and deformed to electrically connect the positive electrode and the negative electrode, and a valve member provided under the short-circuit hole and controlling connection between an internal space of the case and the short-circuit hole. | 12-13-2012 |
20130004809 | SAFETY DEVICE FOR A SEALED ACCUMULATOR - A sealed accumulator container ( | 01-03-2013 |
20130065096 | ALKALINE BATTERY AND CLOSURE ASSEMBLY THEREFOR - The present invention relates to electrochemical cells and to closure assemblies for aqueous alkaline electrolyte cells of the conventional cylindrical type. The closure assembly is for the negative terminal and comprises an internal cap disc in unsecured electrical contact with an internal cap ring. When pressure within the cell increases, for example due to gas generation by electrolysis of the electrolyte through abuse or overcharging, the cap disc moves away from the cap ring, breaking the electrical contact and disrupting the electrochemical circuit within the cell. This prevents further gas generation and pressure build-up, thereby preventing a failure of the internal blow out safety vent and escape of the corrosive electrolyte. In time, the pressure dissipates and the cap disc again makes contact with the cap ring, permitting the cell to be used again. | 03-14-2013 |
20130115487 | BATTERY CELL AND BATTERY MODULE INCLUDING THE SAME - Provided are a battery cell and a battery module including the same, and more particularly, the battery cell can secure safety thereof, by forming an exhaust part in a predetermined region of a sealing part to have a sealing member thicker than the other region of the sealing part so that the exhaust part has relatively weaker adhesive strength than the sealing part not containing the exhaust part, and thus, the adhesive state of the exhaust part is broken when high pressure occurs within the cell due to overheat conditions such as overcharging or inner short circuits to cause a case of the cell to swell, thereby discharging out the substances within a pouch type secondary cell. | 05-09-2013 |
20130143078 | END COVER ASSEMBLY FOR BATTERY AND BATTERY CONTAINING THE SAME - An end cover assembly for a battery with a core comprises a contact terminal, a conductive element, and a thermistor. The conductive element is in electrical communication with the core of the battery. The thermistor is disposed between the terminal and the conductive element. The thermistor electrically connects the terminal and the conductive element when the temperature of the battery is below a predetermined temperature. The thermistor electrically disconnects the terminal and the conductive element when the temperature of the battery is above the predetermined temperature. | 06-06-2013 |
20130149568 | POWER BATTERY AND ANTI-EXPLOSION DEVICE THEREOF - The invention relates to the power battery technology, especially to a power battery and anti-explosion device thereof, comprising an anti-explosion disc disposed in an anti-explosion bore. The surface of the anti-explosion disc is attached with an anti-explosion ring and an anti-explosion patch, the anti-explosion ring and the anti-explosion patch are at the same side of the anti-explosion disc and the anti-explosion ring and the anti-explosion patch form an annular groove. Compared with the prior art, the anti-explosion device has a simple structure, accurate explosion pressure, high intensity and it is not easy to be damaged. When the power battery is abnormal in use and the inner side has high pressure, the anti-explosion disc will explode under certain pressure to prevent explosion of the battery. It improves the safety of the power battery. | 06-13-2013 |
20130171483 | BATTERY AND BATTERY SYSTEM - [PROBLEM] In space-conservative fashion, at low cost, and with high efficiency, to carry out absorption of gas produced at the interior of a battery. | 07-04-2013 |
20130196188 | BATTERY CASE LID AND MANUFACTURING METHOD FOR BATTERY CASE LID - It is an objective of the present invention to provide a battery case lid and a manufacturing method for the battery case lid which inhibit work hardening of a metal plate workpiece and which facilitate manufacture of a battery case lid. Provided is a battery case lid ( | 08-01-2013 |
20130236749 | SECONDARY BATTERY - A secondary battery includes an electrode assembly, a gas collecting member and a battery case. The electrode assembly has first and second electrode plates and a separator interposed between the first and second electrode plates. The gas collecting member is provided adjacent to the electrode assembly. The battery case accommodates the electrode assembly and the gas collecting member. In the secondary battery, the gas collecting member has a first collecting member collecting gas generated in the interior of the battery case and a second collecting member provided to surround the first collecting member. | 09-12-2013 |
20130309529 | CYLINDRICAL BATTERY - Disclosed is a cylindrical battery including: a cylindrical wound electrode group including sheet-like positive and negative electrodes, and a separator interposed therebetween; a bottomed cylindrical battery case having an opening and accommodating the electrode group; and a sealing unit sealing the opening. The electrode group has, at its center portion, a cavity extending in the axis direction thereof. The sealing unit includes a terminal plate having a vent hole, and a valve plate made of an electrically conductive material. The valve plate includes first and second rupturable portions each configured to be ruptured by an increase in the internal pressure of the battery case. The first rupturable portion is provided so as to surround a first region of the valve plate facing the cavity. The second rupturable portion is provided so as to surround a second region of the valve plate. The second region includes the first region. | 11-21-2013 |
20130316201 | Secondary Battery - There is proposed a secondary battery with a large capacity that excels in safety by causing a safety valve to reliably operate to immediately discharge gas produced in the battery in a limited battery space for the purpose of increasing the capacity and the energy density of the battery. The present invention provides a secondary battery with a high battery capacity of 100 Ah or more. A cleavage valve | 11-28-2013 |
20140038004 | SENSOR DEVICE AND METHOD FOR DETERMINING A PRESSURE OF A MEDIUM LOCATED INSIDE AN ELECTROCHEMICAL ENERGY STORE, ELECTROCHEMICAL ENERGY STORE, AND METHOD FOR THE MANUFACTURE THEREOF - A sensor device is provided for determining a pressure of a medium located inside a housing of an electrochemical energy storage. The sensor device includes a detection unit which may be or is inductively coupled to an electrically conductive layer, which is deflectable by the pressure of the medium to be determined. The detection unit is designed to inductively detect a distance, which is dependent on the pressure of the medium to be determined, between the layer and the detection unit, to determine the pressure of the medium from the distance. | 02-06-2014 |
20140045000 | CYLINDRICAL LITHIUM ION SECONDARY BATTERY - The present disclosure relates to a cylindrical lithium ion secondary battery, which can prevent a cylindrical can from being cracked due to an external shock applied during an assembling process while controlling a rupture pressure of the cylindrical can. The cylindrical lithium ion secondary battery includes a cylindrical can, an electrode assembly accommodated in the cylindrical can with an electrolyte, and a cap assembly sealing the cylindrical can, wherein the cylindrical can has a cylindrical bottom portion and a side portion extending from the bottom portion to the cap assembly, and a safety vent having a thickness gradient is formed on the bottom portion. | 02-13-2014 |
20140065451 | SYSTEM AND METHOD FOR CLOSING A BATTERY FILL HOLE - A battery module includes a hermetically sealed battery cell assembly. The battery cell assembly includes a housing and an electrochemical cell disposed in the housing, wherein the housing includes a fill hole configured to receive electrolyte into the battery cell assembly. The battery cell assembly also includes a seal disposed over the fill hole and ultrasonically welded to an annular portion of the housing around the fill hole. | 03-06-2014 |
20140087216 | PRESSURE RELIEF DEVICE - A pressure relief device attached to an outer surface of a battery pack includes an adhesive arranged around an opening in the outer surface of the battery pack and a hat portion arranged over the opening. The hat portion includes an outer ring portion attached to the outer surface of the battery pack via the adhesive and an inner portion that is recessed from the outer surface of the battery pack to form a gap between the opening and the inner portion. A diameter of the inner portion is greater than a diameter of the opening, and a diameter of the gap is greater than the diameter of the opening. | 03-27-2014 |
20140093758 | LITHIUM SECONDARY BATTERY - The present invention provides a lithium secondary battery, comprising a cathode, an anode, a non-aqueous solution containing a lithium salt and an organic solvent, and a safety vent for removing increased internal pressure, the non-aqueous solution having the prescribed composition and the safety vent having the prescribed operational characteristics. The lithium secondary battery of the present invention can ensure its safety even when overcharged. | 04-03-2014 |
20140127539 | Vehicle Having a Battery - A vehicle includes a battery and a vehicle support structure having multiple supports designed as hollow sections. The battery has at least one ventilation opening. The at least one ventilation opening in the battery is connected to the interior of at least one of the supports designed as hollow sections, and via same is connected, directly or via further supports designed as hollow sections, to the surroundings of the vehicle. | 05-08-2014 |
20140141293 | PRISMATIC STORAGE BATTERY - A safety valve is integrally formed in a battery lid together with a peripheral wall portion by press and the like. The safety valve is formed in contact with the peripheral wall portion, at the bottom portion of the depressed portion depressed from the upper surface of the base portion of the battery lid. The upper surface of the safety valve is located below the lower surface of the base portion. When pressing force parallel to the upper surface of the battery lid is exerted on the inner peripheral surface of the peripheral wall portion while the connection tube and the like is connected, the pressing force can be supported by the entire thickness (plate thickness) of the base portion. | 05-22-2014 |
20140154536 | METHODS AND DEVICES FOR DETECTING VENTING OF A BATTERY CELL - A vehicle may include an electric machine, a battery adapted to provide power to the electric machine, and various embodiments of a gauge adapted to indicate venting of the battery. In one embodiment, the gauge is adapted to permanently deform or burst in response to venting of the battery to indicate venting of the battery. In another embodiment, the gauge includes an element adapted to change position in response to venting of the battery to indicate venting of the battery. In other embodiments, the gauge includes either a universal paper indicator or a chemically coated cartridge indicator in communication with the battery and adapted to change in color to indicate venting of the battery. | 06-05-2014 |
20140170445 | POWER BATTERY COVER - A power battery cover, which comprises a cover plate, a burst vent, a first terminal, a second terminal and a conducting strip; wherein, the burst vent, the first terminal and the second terminal are arranged on the cover plate, the second terminal is electrically connected to the cover plate, and the first terminal is subject to an insulated assembly with the cover plate and is electrically connected to the conducting strip; the power battery cover also comprises a tensile shrapnel which is welded to the cover plate; the tensile shrapnel is arranged under and close to the conducting strip; under the condition of overcharge of a battery, air pressure in the battery cell rises due to decomposition of the electrolyte. | 06-19-2014 |
20140178719 | IMMERSION TOLERANT ENERGY STORAGE SYSTEM - The present disclosure relates to an immersion tolerant electrical energy storage system for use with electric vehicles. The energy storage system is equipped with a sealed battery unit and a sealed heat exchanger that cooperates to inhibit the intrusion of fluids and other contaminants into the system. The ability to limit intrusion of such fluids and contaminants provides improved service life for the batteries in the battery unit and components of the thermal control system. | 06-26-2014 |
20140212709 | RECHARGEABLE BATTERY - A rechargeable battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate, a can having an opening at one side thereof through which the electrode assembly is inserted, the electrode assembly being accommodated in the inside of the can, and a cap plate that seals the opening of the can. The can includes a first vent on a first side surface of the can, and a second vent on a second side surface of the can. | 07-31-2014 |
20140220395 | LID FOR A BATTERY CASE - In a lid for a battery case where an annular thin portion is formed integrally with a lid main body by coining, a pair of ribs formed integrally with the lid main body so as to bulge from the lid main body and extending in a short direction of the lid main body are disposed on both sides of the annular thin portion in a long direction of the lid main body. | 08-07-2014 |
20140242425 | CHASSIS FOR RECHARGEABLE BATTERY - A rechargeable battery comprises a chassis including a lower fixation plate, and a plurality of battery cells on the lower fixation plate. The lower fixation plate includes at least one flow channel positioned to collect condensate from the battery cells and move the collected condensate away from the battery cells. | 08-28-2014 |
20140272488 | SECONDARY BATTERY HAVING ZIGZAG-SHAPED SEALING PART - Disclosed is a secondary battery in which an electrode assembly is accommodated in a battery case, wherein the battery case is made of a laminate sheet including a resin layer and a metal layer and hermetically sealed through sealing of an outer circumferential surface thereof in a state of accommodating the electrode assembly, and at least one of sealing parts at the outer circumferential surface of the battery case is provided with at least two continuously formed recessed portions. | 09-18-2014 |
20140308550 | BATTERY PACK - A battery pack | 10-16-2014 |
20140315050 | VENT AND CAP ASSEMBLY OF POWER BATTERY - The present disclosure provides a vent and a cap assembly of a power battery. The vent comprises a vent body and a vent body protective sheath having a wall portion and a hollow portion, the vent body is fixedly connected to a lower portion of the wall portion and sealing the hollow portion from below, an upper portion of the wall portion is fixedly connected to a cap plate for sealing a vent hole. The cap assembly of the power battery comprises a cap plate provided with a vent hole and an electrolyte-injection hole; a first electrode post connected to the cap plate; a second electrode post connected to the cap plate; and a vent fixedly provided to the vent hole; wherein the vent is the above vent. | 10-23-2014 |
20140322566 | RECHARGEABLE BATTERY PACK INCLUDING PACK COVER - A battery pack includes at least one unit cell with a top end, the unit cell including a vent hole, and a pack cover over the top end of the unit cell. The pack cover includes a discharge part having a bottom member that is sloped with respect to the top end of the unit cell. The bottom member of the pack cover including an aperture corresponding to the vent hole of the unit cell. | 10-30-2014 |
20140329115 | BATTERY HAVING A COVER THAT HAS PREDETERMINED BREAKING POINTS - A battery includes at least two battery cells arranged adjacent to one another and each arranged in a battery cell housing. Each battery cell has at least one battery cell terminal. The battery also includes one degasification element per battery cell. Each degasification element is arranged within the battery cell housing associated with the respective battery cell and is configured to discharge gases generated within the respective battery cell from the respective battery cell in the presence of a predetermined gas pressure. The battery also includes a cover configured to cover at least a part of the surfaces of the battery cells and cover the degasification elements of the battery cells in air-tight fashion. The cover has, in each case in a region of the degasification elements, predetermined breaking points assigned to the degasification elements. | 11-06-2014 |
20140342198 | SECONDARY BATTERY - A cap plate for sealing a case housing an electrode assembly includes a cover portion that covers the electrode assembly, a support portion having a first thickness, the support portion being offset along a first direction from the cover portion, and a reinforcing portion that connects the cover portion and the support portion. The reinforcing portion has a processing thickness that is greater than the first thickness, the first thickness and the processing thickness being measured along the first direction | 11-20-2014 |
20140349147 | BIPOLAR BATTERY ASSEMBLY - The invention relates to an article comprising: a) one or more stacks of battery plates comprising one or more bipolar plates; b) located between each plate is a separator and a liquid electrolyte; further comprising one of more of the features: 1) c) the one or more stacks of battery plates having a plurality of channels passing transversely though the portion of the plates having the cathode and/or the anode deposited thereon; and d) i) one or more seals about the periphery of the channels which prevent the leakage of the liquid electrolyte into the channels, and/or posts located in one or more of the channels having on each end an overlapping portion that covers the channel and sealing surface on the outside of the monopolar plates adjacent to the holes for the transverse channels and applies pressure on the sealing surface of the monopolar plates wherein the pressure is sufficient to withstand pressures created during assembly and operation of electrochemical cells created by the stacks of battery plates; 2) c) a membrane comprising a thermoplastic polymer is disposed about the entire periphery of the edges of the stack of plates; 3) wherein the separator is in the form of a sheet having adhered to its periphery a frame; and 4) c) an integrated valve and integrated channel communicating with the valve. | 11-27-2014 |
20140349148 | WELDED STRUCTURE IN BATTERY, FORMING METHOD OF THE SAME, SECONDARY BATTERY CELL AND SECONDARY BATTERY MODULE - A plating layer | 11-27-2014 |
20140363708 | Lithium Ion Battery - In a lithium ion battery provided with a cleavage valve that discharges gas in accordance with an internal pressure rise, and a discharge capacity X of the battery being 30 Ah or more and less than 100 Ah, a positive electrode composite contains a mixed active material of layered lithium nickel manganese cobalt composite oxide (NMC) and spinel lithium manganese oxide (sp-Mn). A density of the positive electrode composite is 2.4 to 2.7 g/cm | 12-11-2014 |
20140370336 | Battery having a Protection from Adjacent Cells in Case of Discharge of a Battery Cell - A battery comprises a housing and a plurality of battery cells arranged in the housing. Each battery cell has at least one discharge valve. The battery further comprises a discharge pipe system for discharging gases released from one, a plurality of or all discharge valves of the battery cells. The discharge pipe system according to the disclosure has a plurality of separate connections for receiving the released gases and a common discharge guide into which the separate connections open and via which the released gases can be discharged out of the housing. The battery is characterized in that a protective film is arranged between the discharge valves of the battery cells and the separate connections of the discharge pipe system so that direct contact of the battery cells to the gases in the discharge pipe system is prevented. | 12-18-2014 |
20150024241 | RECHARGEABLE BATTERY - A rechargeable battery includes an electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode. The rechargeable battery also includes a case accommodating the electrode assembly. The rechargeable battery further includes a cap plate including a first plate and a second plate coupled to the first plate along a joint. The cap plate is coupled to an opening of the case. The rechargeable battery also includes a vent unit at the joint where the first plate of the cap plate is coupled to the second plate. | 01-22-2015 |
20150030893 | VENT HOUSING FOR ADVANCED BATTERIES - A system includes a vent housing configured to be installed on a lower housing of a battery module at a first side of the vent housing. The vent housing has a main body having an opening on a second side of the vent housing and an internal chamber coupled to the opening. The internal chamber includes a first wall having an internal burst vent configured to open at a first pressure threshold and a second wall having a ventilation vent comprising a gas-selective permeability layer. | 01-29-2015 |
20150064514 | PORTABLE ELECTRICAL ENERGY STORAGE DEVICE WITH THERMAL RUNAWAY MITIGATION - Electrical energy storage device for powering portable devices such as vehicles or consumer electronics includes barriers to minimize migration of thermal energy and propagation of combustion in the rare event that electrical energy storage cells fail, burst and ignite. A burst structure is provided to vent gas from the device in a desired direction in the event pressure within the device exceeds a maximum value. Biased vents permit gases emanating from a portable electrical energy storage cell within an electrical energy storage module to escape and isolate other electrical energy storage cells from the gases. | 03-05-2015 |
20150072185 | ELECTRODE LEAD AND SECONDARY BATTERY HAVING THE SAME - An electrode lead for electrically connecting an electrode assembly provided inside a case of a secondary battery with the outside of the case, according to the present invention, comprises: an inner lead which is inserted between sealing parts of the case and to which an electrode tab of the electrode assembly is attached, and which has a gas flow path so as to allow gas to flow between the inside and the outside of the case; and an external lead which is insertably disposed in the gas flow path, is electrically connected with the inner lead when inserted into the gas flow path, seals one end of the gas flow path, and is separated from the gas flow path so as to cut off electrical connection with the inner lead when the pressure of the gas flowing into the gas flow path is greater than or equal to the predetermined pressure. | 03-12-2015 |
20150079428 | BATTERY MODULE - A battery module including a plurality of battery cells aligned in one direction, the plurality of battery cells each having a vent on a top surface thereof; and at least one vent cover covering the vent and covering side surfaces of the plurality of battery cells, wherein one vent cover covers outer side surfaces of outermost battery cells among the aligned plurality of battery cells, or a plurality of vent covers cover side surfaces of a battery cell of the plurality of battery cells. | 03-19-2015 |
20150086817 | BATTERY PACK CAPABLE OF DISCHARGING GASES IN POUCH TYPE BATTERY CELL - The present invention relates to a battery pack capable of discharging gases in a pouch type battery cell when a gas pressure inside the pouch type battery cell is increased over a reference pressure, the battery pack including: a plurality of pouch type battery cells; a case comprising partitions suppressing the pouch type battery cells from expanding in a thickness direction thereof, wherein the pouch type battery cells are respectively held in spaces defined by the partitions; and a punching unit installed on the case to pierce a portion of surfaces of the pouch type battery cells , which is not supported by the partition, and having pin members of which number is equal to that of the pouch type battery cells. | 03-26-2015 |
20150093608 | BATTERY MODULE HAVING VENTING GUIDING PORTION - A battery cell is provided. The battery cell includes a battery case, an electrode assembly located in the battery case, the electrode assembly comprising a cathode, an anode, and a separator disposed between the cathode and the anode, an electrolyte present in the battery case, the battery case being sealed at a perimeter thereof, and a frame coupled to the perimeter of the battery case, the frame having a venting guiding portion at the perimeter of the battery case, such that sealing of the battery case is released through the venting guiding portion when internal pressure of the battery cell increases, the venting guiding portion comprising a reduction in the amount of material of the frame in a predetermined location at the perimeter of the battery case. A battery cell module is also provided. | 04-02-2015 |
20150125720 | POWER SOURCE DEVICE, ELECTRIC VEHICLE PROVIDED WITH SAME, AND ELECTRICITY STORAGE DEVICE - In a power supply device, the gas exhaust valve is integrally coupled to the outer can at the time of opening the gas exhaust valve, and the connecting portion between the outer can and the gas exhaust valve is partially broken at the time of opening the gas exhaust valve by an internal pressure of the outer can, and the gas duct further comprises a joining aperture being connected airtight to the gas exhaust valve, and a duct exhaust portion being connected to the external gas exhaust duct, and the inner diameter d inside the gas duct is at least partially smaller than the outer diameter a of the gas exhaust valve between the joining aperture and the duct exhaust portion. | 05-07-2015 |
20150140371 | CURVED BATTERY CONTAINER - A curved container for electrochemical battery cells manufactured with an open side into which the battery cells are placed along with a resilient structure such that when the lid is placed on the container and attached/sealed, the battery cells are sealed in the container and preloaded against the large top and bottom surfaces of the container. Electrical contacts feed through one edge of the container to enable the electrical power generated by the cells to be safely accessed, and the cells can be safely charged without external atmospheric leaks into the container, or gases generated during battery use to escape. The containers can be stacked on edge next to each other as a stack but without the need to compress the stack to maintain battery cell compression, which enables a container to be easily replaced without having to dissemble the stack. | 05-21-2015 |
20150140372 | HERMETICALLY-SEALED BATTERY - A hermetically-sealed battery including a case body made of a metal, power generation elements housed in the case body, and a lid plate made of a metal. The case has an opening. The lid plate is fitted into the opening of the case body. The lid plate has a periphery laser-welded together with the case body to hermetically seal the opening of the case body with the lid plate. The lid plate includes a frame piece integrally provided along the periphery of the lid plate so as to be perpendicular to a plane surface of the lid plate. The frame piece is pressed into the opening along an inner wall surface. Laser welding is performed along a boundary between the frame piece and the inner wall surface that are in pressure contact with each other. | 05-21-2015 |
20150311488 | LID FOR BATTERY CASE - In a configuration where an annular thin portion | 10-29-2015 |
20150318526 | ELECTRICITY STORAGE DEVICE - An electricity storage device includes an electrode assembly, a case, a safety valve, and a cover member. The case accommodates the electrode assembly. The safety valve is arranged in the case and opens to discharge gas out of the case when an inner pressure of the case exceeds a release pressure. The cover member is arranged in the case opposing the safety valve and includes a flow passage for the gas. | 11-05-2015 |
20150340673 | PRESSURE RELIEF ELEMENT, PRESSURE RELIEF DEVICE AND BATTERY - The present invention relates to a pressure relief element ( | 11-26-2015 |
20150340674 | DEVICE FOR AIDING IN THE FRACTURE OF A VENT OF AN ELECTROCHEMICAL CELL - A device for aiding in the fracture of a vent of an electrochemical cell includes a main body having a first surface and a plurality of lobes extending out from the first surface of the main body such that an open space is provided between adjacent lobes. Each of the plurality of lobes are configured to make contact with the vent during deployment of the vent such that the vent completely separates from a bottom of the electrochemical cell. The open space provided between adjacent lobes is configured to allow gases from inside the electrochemical cell to pass through during deployment of the vent. | 11-26-2015 |
20150349306 | BATTERY MODULE - A battery module is provided and includes a plurality of rechargeable batteries and a battery cover, wherein the rechargeable batteries are disposed adjacent to each other, each of the rechargeable batteries has a battery case having a wall portion equipped with an open valve that is constructed so as to open when the inner pressure of the battery case rises up to a threshold value, and the battery cover faces the wall portion. The battery cover has a plurality of cover members provided side by side in a direction toward which the rechargeable batteries are disposed adjacent to each other. The cover members include at least adjacent first and second cover members. The first cover member has a first edge portion and the second cover member has a second edge portion overlapped with the first edge portion. | 12-03-2015 |
20150357670 | ENERGY STORAGE DEVICE AND METHOD OF MANUFACTURING ENERGY STORAGE DEVICE - An energy storage device includes: an electrode assembly; a case for storing the electrode assembly therein, the case having an electrolyte solution sealing portion where an electrolyte solution pouring hole formed in the case is sealed; and at least one partition member arranged in a gap formed between the case and the electrode assembly stored in the case. The partition member partitions the gap in the winding axis direction of the electrode assembly by surrounding the electrode assembly in the winding direction of the electrode. The electrolyte solution pouring hole is arranged at a position closer to one end of the electrode assembly than the partition member close to one end of the case is in the winding axis direction. | 12-10-2015 |
20150364736 | ELECTRIC STORAGE DEVICE - An electric storage device including an electrode assembly, a case holding the electrode assembly therein, the case including a container, a lid formed in an opening of the container and including a long side and a short side, and a gas exhausting portion comprising a safety valve formed in the lid, the safety valve being configured to open to exhaust internal gas when an internal pressure reaches a specific level, and a sealing member formed on an outer surface of the lid, the sealing member including a short side which is adjacent to the short side of the lid, and a long side which is adjacent to the long side of the lid, and the sealing member including a protective portion formed over the gas exhausting portion, the protective portion comprising a perforation. | 12-17-2015 |
20160028057 | BATTERY CASE - A battery case provided with a safety valve ( | 01-28-2016 |
20160036025 | DEGASSING VALVE - The present invention relates to a degassing valve ( | 02-04-2016 |
20160043368 | SECONDARY BATTERY AND BATTERY MODULE INCLUDING SECONDARY BATTERY - In one embodiment, a secondary battery includes: an electrode assembly, a case accommodating the electrode assembly, a cap plate sealing an opening of the case, and an extinguishing member coupled to an exterior side of the case and comprising an extinguishing agent. A battery modules includes: a plurality of secondary batteries each including an electrode assembly, a case accommodating the electrode assembly and a cap plate sealing an opening of the case; and an extinguishing member coupled to exterior sides of the plurality of secondary batteries. | 02-11-2016 |
20160064707 | SEALING FRAME FOR CELLS IN A BATTERY WITH A THERMALLY ACTIVE COMPENSATING ELEMENT - Sealing frame ( | 03-03-2016 |
20160079578 | HINGED VENT FOR ELECTROCHEMICAL CELL SYSTEM AND METHOD - The present disclosure includes an electrochemical cell having a housing configured to house one or more electrodes of the electrochemical cell. The housing includes a wall having an inner surface facing the one or more electrodes. The electrochemical cell also includes a hinged vent stamped on the inner surface of the housing, where the hinged vent includes a fracture portion, a hinge portion on either side of the fracture portion extending substantially parallel to the fracture portion, and connecting portions extending between the fracture portion and the hinge portions. The fracture portion includes a first cross-sectional width through the wall of the housing and the hinge portion includes a second-cross sectional width through the wall of the housing greater than the first cross-sectional width. | 03-17-2016 |
20160079579 | CASE ASSEMBLY, PRISMATIC SECONDARY BATTERY, AND FABRICATION METHOD THEREOF - Provided are a case assembly, a prismatic secondary battery, and a method of fabricating the prismatic secondary battery. The prismatic secondary battery includes: an electrode assembly including a first electrode plate, a second electrode plate, and a separator between the first and second electrode plates; a case formed of a first material, wherein an electrode assembly accommodation cavity is formed in the case to accommodate the electrode assembly, and an opening through which the electrode assembly is to be inserted is formed in a portion of the case is formed in a portion of the case; and a cap plate sealing the opening. A gas discharge hole is formed in the case to discharge gas generated during a pre-charging operation. The gas discharge hole is sealed with a gas seal formed of a second material. | 03-17-2016 |
20160093857 | BATTERY MODULE VENT SYSTEM AND METHOD - A battery module includes a housing having an interior defined by multiple sides, one side of which is a lid. The battery module also includes lithium ion electrochemical cells disposed in the housing, each cell having a vent through which gases may be vented. Moreover, the battery module includes a first chamber defined by interior aspects of the housing. Furthermore, the first chamber receives vented gases directed in a first direction from the electrochemical cells. In addition, the battery module includes a surface of the first chamber. The surface is configured to direct the vented gases in a second direction. The battery module also includes a second chamber defined partially by the lid. The second chamber receives the vented gases from the first chamber and directs the vented gases from the housing. | 03-31-2016 |
20160104873 | BATTERY PACK SYSTEM AND METHOD FOR FABRICATION THEREOF - Various embodiments of battery pack assemblies are described. In at least one embodiment, a battery pack assembly includes first and second cell carriers. At least one of the carriers is a retaining cell carrier, has a plurality of upstanding walls extending from a bottom wall thereof and defines a matrix of recesses. At least one of the carriers is a perforated cell carrier and has a wall with a plurality of openings. Battery cells, each having a plurality of cell terminals, are retained within the matrix of recesses and at least a subset of the plurality of cell terminals extend through the openings of the wall of the perforated cell carrier. Electrically conductive interconnecting members are electrically coupled to at least two of the cell terminals of the battery cells that extend through the openings of the perforated cell carrier to provide an electrical interconnection therebetween. | 04-14-2016 |
20160133900 | LITHIUM ION BATTERY AND LITHIUM ION BATTERY PACK - According to one embodiment of the present invention, a lithium ion battery having desirable safety performance is provided. The lithium ion battery includes a battery housing, a battery cover assembled to the battery housing, a pressure relief valve coupled to the battery housing and/or battery cover, and a safety device formed on the housing and/or battery cover and fixed to the pressure relief valve. The safety device includes a shielding plate facing the pressure relief valve, a side wall and an air flow channel structure. The side wall extends from the shielding plate and connects with the battery housing or the battery cover. The air flow channel structure is defined in the side wall. | 05-12-2016 |
20160133901 | LITHIUM ION BATTERY AND BATTERY PACK - The present invention discloses a lithium ion battery, including a battery shell, a battery top cap mounted on the battery shell, and a relief valve provided on the battery shell and/or the battery top cap; the lithium ion battery further includes a safety protection device that is provided on the battery shell and/or the battery top cap and that fixedly fits with the relief valve; where the safety protection device includes a baffle plate opposite to the relief valve, a side wall and a gas flow channel structure; the side wall extends, from the baffle plate, toward the battery shell or the battery top cap, and is connected with the battery shell or the battery top cap; and the gas flow channel structure is formed on the side wall. By forming the gas flow channel structure on the side wall, the baffle plate and the gas flow channel structure form a relatively separate design, so that the baffle plate may be used for effectively baffling solid spark particles, and meanwhile the lateral gas flow channel structure may be used for effectively discharging gases, thereby improving the safety performance of the lithium ion battery. | 05-12-2016 |
20160149179 | BATTERY CASE LID AND MANUFACTURING METHOD FOR BATTERY CASE LID - It is an objective of the present invention to provide a battery case lid and a manufacturing method for the battery case lid which inhibit work hardening of a metal plate workpiece and which facilitate manufacture of a battery case lid. Provided is a battery case lid ( | 05-26-2016 |
20160172716 | ASSEMBLY FOR STORING ELECTRICAL ENERGY,COMPRISING A PRESSURE-INCREASING ACCELERATOR | 06-16-2016 |
20160181583 | HYDROGEN-RELEASING FILM | 06-23-2016 |
20160254508 | RECHARGEABLE BATTERY | 09-01-2016 |