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MEANS EXTERNALLY RELEASING INTERNAL GAS PRESSURE FROM CLOSED CELL, I.E., VALVE ETC.

Subclass of:

429 - Chemistry: electrical current producing apparatus, product, and process

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
429056000 Blowout type 87
429054000 Elastic, resilient or spring biasing valve means 17
Entries
DocumentTitleDate
20110206956ROUND CELL BATTERY - A round cell battery comprising a stack of substantially cylindrically-shaped electrically conductive grid plates and two or more bus bars. One or more of the bus bars is electrically connected to outer rims of a set of alternating ones of the grid plates in the stack and to a positive voltage post of the battery. A different one or more of the bus bars is electrically connected to outer rims of a different set of alternate ones of the grid plates in the stack and to a negative voltage post of the battery.08-25-2011
20090111003CAN TYPE SECONDARY BATTERY AND METHOD OF MANUFACTURING CIRCUIT BOARD FOR THE SECONDARY BATTERY - A can type secondary battery and a method of manufacturing a circuit board for the secondary battery that improves reliability by providing a consistent breakdown pressure of the circuit board used in the can type secondary battery. The can type secondary battery includes an electrode assembly, a can to house the electrode assembly and a cap assembly combined with the can. The cap assembly includes a circuit board, which includes fiber layers and is broken by a safety vent when an internal pressure of the can is increased. A woven direction of the fiber layers is inclined with respect to a length direction of the circuit board. Distribution of the breakdown pressure among the circuit boards is decreased, and thus the circuit boards are broken under a consistent pressure, thereby improving the reliability of the can type secondary battery.04-30-2009
20130040172STRUCTURE OF LITHIUM-ION BATTERY MODULE - A structure of lithium-ion battery module comprises a battery case, containing one or more flexible packaging polymer lithium-ion battery cells, at of which top a connecting conductor is arranged to connect them in series and/or parallel to form a battery pack, positive and negative poles of the battery pack are mounted on the connecting conductor. The structure further comprises a battery cover plate welded on the open end of the battery case to package the battery pack into the battery case, and the positive and negative pole terminals of the battery module are arranged on the battery cover plate and welded to the positive and negative poles. The plate is provided with one or more through hole, through which the air in the battery case is evacuated and the inert gas is injected, after that a steel ball is clamped into each through hole to seal the battery case.02-14-2013
20130040173BATTERY PACK - A battery pack comprising: a secondary battery including a safety valve; a gas absorption portion including a gas absorbent represented by zeolite and a container hermetically enclosing the gas absorbent; and a case housing the secondary battery and the gas absorption portion. The safety valve is configured to discharge a gas produced in the secondary battery at the time of abnormality. The container includes a principal surface facing the safety valve, for example, and when the gas is discharged, the container is unsealed by rupturing of at least the principal surface of the container by an effect of heat or pressure of the gas.02-14-2013
20100104928BATTERY PACK, BATTERY-MOUNTED DEVICE AND CONNECTION STRUCTURE FOR BATTERY PACK - It is aimed to provide a battery pack capable of securing safety by preventing A battery contained in the battery pack from entering a burning state even if the battery releases high-temperature gas in an abnormal state. An exhaust duct 04-29-2010
20130084475LITHIUM ION BATTERY - A lithium ion battery including a lithium ion battery core, a cylindrical aluminum shell, a positive guide needle of the anode, a negative guide needle of the cathode, a rubber seal having a circular recess in the outside of the side wall, and a sealing band. The battery core is arranged within the shell. The positive and negative guide needles are led out from under the seal. The battery core together with the rubber seal is sealed in the shell via the sealing band which is molded from an insulated moldable material by rolling. The sealing band is applied only to the top portion of the shell, the side wall of the seal, and the edge of the top wall of the seal. The bottom wall of the shell is provided with a pressure relief valve.04-04-2013
20130029188SECONDARY BATTERY - A secondary battery including an electrode assembly, the electrode assembly including an uncoated region at ends thereof; a case accommodating the electrode assembly; a cap plate coupled with the case; and an insulation member in the case, the insulation member including a first region between the electrode assembly and the cap plate, and a second region between the uncoated region of the electrode assembly and an inner surface of the case.01-31-2013
20090317695BATTERY MODULE - A battery module that includes a plurality of electrochemical cells. Each of the electrochemical cells has a first end including at least one terminal and a second end having a vent. The plurality of electrochemical cells are arranged such that the second ends of a first set of the plurality of electrochemical cells face the second ends of a second set of the plurality of electrochemical cells. A central chamber is located between the second ends of the first set of the plurality of electrochemical cells and the second ends of the second set of the plurality of electrochemical cells. The central chamber is configured to receive gases released from the vents of the plurality of electrochemical cells.12-24-2009
20090042094BATTERY MODULE ASSEMBLY - A battery module includes at least one electrochemical cell. The electrochemical cell includes a first terminal conductively coupled to a first electrode and a body portion configured to function as a second terminal and conductively coupled to a second electrode via a pressure relief portion. The battery module further includes an end cap comprising a conductive portion and an insulating portion, the conductive portion being conductively coupled to the body portion. The pressure relief portion is configured to separate from the body portion to a deployed position when a pressure within the body portion reaches a first predetermined level, thereby substantially breaking the conductive coupling between the body portion and the second electrode. The insulating portion substantially prevents formation of a conductive coupling between the body portion and the second electrode when the pressure relief portion is in the deployed position.02-12-2009
20130071703MOBILE BATTERY MODULES FOR HIGH POWER APPLICATIONS - Some embodiments of the present disclosure relate to a mobile battery module for high power applications. The mobile battery module includes a case having a chamber therein, wherein one or more engagement elements are disposed on an inner surface of the case. A number of blocks removably engage the one or more engagement elements, wherein each block includes a pair of opposing sidewalls. Within each block, a number of end caps extend from the opposing sidewalls to cooperatively hold a number of respective cells there between.03-21-2013
20090233157CYLINDER TYPE SECONDARY BATTERY - Disclosed is a cylindrical secondary battery that can improve pressing force of a gasket pressing a cap up and a safety vent. The cylindrical secondary battery prevents leakage of electrolyte by improving pressing force of the gasket by including a cap up whose terminal portion is formed thicker than the peripheral portion. By using the cap up of the above structure, a curled portion is formed at the edge of the cap up or safety vent so as to surround the end of the safety vent or cap up. Thus, internal resistance can be reduced when the vibration or external impact is applied to the battery, and assembling error can be prevented.09-17-2009
20120196161SECONDARY BATTERY INCLUDING ONE-WAY EXHAUST MEMBER - Disclosed herein is a plate-shaped secondary battery constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case, and the battery case is sealed by thermal welding, wherein the secondary battery has at least one-way exhaust member, mounted at a sealed portion, formed at the outer circumference of an electrode assembly receiving part of the battery case, for allowing internal high-pressure gas to be exhausted out of a battery cell and preventing external gas from being introduced into the battery cell. The secondary battery according to the present invention has the effect of effectively exhausting internal high-pressure gas generated during the abnormal operation of the battery, such as overcharge, out of the battery case, while maintaining the sealability of the battery case, thereby simultaneously improving the efficiency and safety of the battery.08-02-2012
20120114986SECONDARY BATTERY AND ENERGY STORING APPARATUS - Provided as a secondary battery including a metallic can including a accommodating portion accommodated with an electrode assembly and an electrolyte together, and an opening portion; a metallic cap positioned in the opening portion of the can to seal the can; and a fuse-joining member having the melting point lower than that of the can and the cap, and being fused-joined in a state interposed at a joining portion between the can and the cap, and/or in the state surrounding around the joining portion.05-10-2012
20120114985BATTERY MODULE - A battery module including a battery array including: a plurality of battery cells, each including a first surface at a first end of the battery cell; an electrode terminal at the first end; a second surface at a second end of the battery cell opposite the first end; and a side surface extending between the first and second ends, the second surfaces of first and second battery cells of the plurality of battery cells facing each other.05-10-2012
20120114984BATTERY MODULE - A battery module includes a battery array having a plurality of battery cells each including a terminal surface exposing an electrode terminal and a vent, and a bottom surface generally opposite to the terminal surface, wherein the battery cells are stacked together; end plates adjacent outer ends of the battery array and having electrode openings exposing the electrode terminals; vertical fixing plates having side holders extending along a portion of a side of the battery array; and horizontal insulating members located between adjacent ones of the stacked battery cells.05-10-2012
20120237803Battery Pack Directed Venting System - A thermal management system is provided that minimizes the effects of thermal runaway within a battery pack, the system using an integrated battery venting assembly comprised of an integrated exhaust port, a valve retention plate that covers the exhaust port and includes a plurality of retention plate ports, and a plurality of valves that are configured to seal the retention plate ports under normal conditions and unseal the retention plate ports during thermal runaway. As hot gas passes through the retention plate ports, the plate is configured to melt and be ejected, thereby allowing subsequent hot gas to pass through the larger exhaust port. A perforated cover plate may be used to protect the external surfaces of the retention plate and valves. An internally mounted exhaust guide may be used to direct the flow of hot gas expelled during the thermal runaway event.09-20-2012
20120237802SECONDARY BATTERY - Provided is a secondary battery including a fuse part that can continually function as a fuse. In the state where a first short circuit plate contacts a connecting plate to form a short circuit, even when heat generated from the short circuit melts the first short circuit plate, a second short circuit plate contacts the connecting plate to maintain a short circuit state, so that the fuse part can continually function as a fuse. The secondary battery includes an electrode assembly, a case accommodating the electrode assembly, a cap assembly including a cap plate sealing the case and having a short circuit hole, and a short circuit assembly including a first short circuit plate, a second short circuit plate, and a connecting plate. The first short circuit plate is disposed in the short circuit hole. The second short circuit plate contacts a lower part of the first short circuit plate. The connecting plate is spaced apart from the cap plate and is disposed outside the cap plate to cover the short circuit hole.09-20-2012
20100035129SAFETY DEVICE FOR A SEALED ACCUMULATOR - The invention relates to a safety device for a watertight electro-chemical accumulator (02-11-2010
20090075158Heat Exchanger for an Energy Storage Device - The invention relates to a heat exchanger (03-19-2009
20100330402CAP ASSEMBLY WITH DESIRABLE SAFETY PERFORMANCE - A cap assembly with desirable safety performance for use in lithium ion batteries, includes an insulating gasket defining a through hole therein, a rupture plate positioned in the through hole, a vent plate defining an air hole electrically connected with the rupture plate, a current interrupt device disposed on the rupture plate, and an end cap defining an air exhaust hole assembled on the current interrupt device. The current interrupt device has an upper conductive plate electrically connected with the end cap, a lower conductive plate electrically connected with the rupture plate, and a fuse electrically connecting the upper conductive plate and the lower conductive plate. When the current intensity in the lithium ion battery exceeds a predetermined value, the fuse melts to cut off the current path.12-30-2010
20110293973BATTERY PACK - A battery pack includes a battery module including a plurality of battery cells; a housing accommodating the battery cells, the housing having a bottom plate and a plurality of side walls extending from the bottom plate; and a middle cover covering the battery module, the middle cover having a body and a coupling flange extending away from the body and located between one of the side walls and the battery module.12-01-2011
20120015218BATTERY MODULE - A battery module includes a plurality of rechargeable batteries and a housing configured to receive the rechargeable batteries, wherein the housing has a vent opening; and a valve configured to close the vent opening, wherein the valve includes a porous film with pores having a diameter larger than that of gas molecules and smaller than that of water particles.01-19-2012
20110171504BATTERY AND BATTERY UNIT - A battery (07-14-2011
20090148753CAP ASSEMBLY AND SECONDARY BATTERY HAVING THE SAME - A cap assembly and a secondary battery having the same, the cap assembly including: a safety vent having a protrusion that extends at a predetermined angle of inclination; a cap down having a hole through which the protrusion extends; an insulating plate positioned between the cap down and the safety vent; a sub plate disposed between the cap down and the safety vent, and connected to the protrusion; and a cap up electrically disposed upon the safety vent. The sub plate includes grooves disposed around the protrusion06-11-2009
20100266878PRISMATIC POLYMER CASE FOR ELECTROCHEMICAL DEVICES - A case structure generally includes a trough shaped base section, a positive end piece, a negative end piece, and a cover section. The trough shaped base section includes a bottom and two side wall members. The positive and negative end piece are disposed at opposite ends of the base section and include an electrically conductive material at least partially embedded within a thermoplastic material. The cover section is disposed on the base section for sealing the prismatic case. The base section and the cover section can be made from, for example, a polymeric material.10-21-2010
20100028759BATTERY, VEHICLE USING THE BATTERY, AND BATTERY MANUFACTURING METHOD - A battery includes: a first member having an opening a housing space which houses a generation element; and a second member which closes the opening of the first member. The first member and the second member have welded portions which are welded to each other. A groove which can receive a part of molten metal MM generated upon welding is formed in a channel between the first and the second member, i.e., from the welded portion to the housing space. This prevents flow of the molten metal generation upon welding to the housing space. A vehicle using the battery and a method for manufacturing such a battery are also provided.02-04-2010
20100266880BATTERY MODULE AND BATTERY PACK USING SAID BATTERY MODULE - A battery module includes a first enclosure, a second enclosure, and a plurality of batteries having vent holes accommodated between the first and second enclosures, and has a configuration in which a first partition member for accommodating the batteries individually at a position facing the battery vent holes in at least one of the first enclosure and the second enclosure is provided.10-21-2010
20110020674ENCLOSED BATTERY - A cylindrical electrode group prepared by winding a positive electrode and a negative electrode with a separator interposed therebetween is placed in a rectangular battery case together with an electrolyte. A pressure release mechanism is provided on a bottom surface of the battery case parallel to a winding axis of the electrode group. The pressure release mechanism is spaced apart from a projection line of the winding axis of the electrode group projected at a right angle on the bottom surface of the battery case.01-27-2011
20100081039GAS EXHAUST STRUCTURE OF BATTERY - A gas exhaust structure of a battery includes a rupture valve formed in a battery body, and a pipe unit composed by integrating a coupling pipe and an exhaust pipe with each other. A one-side opening of the coupling pipe is coupled to the rupture valve. The exhaust pipe is coupled to an other-side opening of the coupling pipe, guides gas that spouts out from an inside of the battery body through the rupture valve and the one-side opening of the coupling pipe, and exhausts the gas to an outside. The exhaust pipe is arranged to be offset with respect to the rupture valve without allowing an extended line that passes through a center of the rupture valve and a centerline of the exhaust pipe to be perpendicular to each other.04-01-2010
20120107650MAGNETIC SEALING VALVE DEVICE FOR A BATTERY CASE - A valve apparatus (05-03-2012
20090263703CAP ASSEMBLY AND SECONDARY BATTERY USING THE SAME - In a secondary battery that includes a cap assembly, the cap assembly includes a cap plate that includes a vent formed on one surface of the cap plate and a reinforcing portion formed at a region adjacent to the vent, on the opposing surface of the cap plate to the surface on which the vent is formed. Alternatively, the cap plate may include a reinforcing portion formed at a region adjacent to the vent, on the surface on which the vent is formed. The vent is prevented from being cracked by external pressure and gas is prevented from leaking inside the secondary battery.10-22-2009
20090286138FILM-COVERED ELECTRICAL DEVICE PACKAGING SYSTEM - A film-covered electrical device packaging system of the present invention includes frame member (11-19-2009
20090286139LITHIUM SECONDARY BATTERY - A main object of the present invention is to provide a lithium secondary battery whose potential can be rapidly increased immediately after the start of overcharge, thereby terminating charging before a safety valve is actuated. This object can be solved by a lithium secondary battery comprising: a cathode having a phosphate compound of olivine structure as a cathode active material, an anode, a separator sandwiched between the cathode and the anode, an electrolyte comprising a supporting salt dissolved therein, and a safety valve having a valve-opening pressure within the range of 25 kgf/cm11-19-2009
20090053584ALKALINE DRY BATTERY - A leak-proof alkaline dry battery including a battery case and a seal unit for closing the opening of the battery case. The seal unit includes: a negative electrode terminal plate; a negative electrode current collector nail electrically connected to the terminal plate; and a resin seal member. The resin seal member includes: a central cylindrical part having an opening through which the body of the negative electrode current collector nail is inserted; an outer peripheral cylindrical part interposed between a peripheral edge of the negative electrode terminal plate and an open edge of the battery case; a connecting part interconnecting the central and outer peripheral cylindrical parts; and a thinned section formed in the connecting part. The body of the negative electrode current collector nail is fitted to the opening of the central cylindrical part in a particular fit relation to prevent leakage for a long time.02-26-2009
20090186260Accumulator, Accumulator Group and Method for Production Thereof - A rechargeable battery includes negative electrode plates that are connected to an output contact sheet which has bent-around contact lugs. The contact lugs extend from the second side edge to the first side edge of the electrode plate stack, whilst in a sprung manner on the inner face of the housing and form an electrical contact with the housing. The rechargeable battery also includes a connection profile which can be electrically and mechanically connected to connecting contacts of the positive electrode plates and has a U-shaped base section extending parallel to the cover. Two parallel flank sections are provided, which extend away from the base section and are arranged in order to surround and to make electrical contact with the housing of an adjacent rechargeable battery.07-23-2009
20110223448RECHARGEABLE BATTERY - A rechargeable battery including: an electrode assembly; and a case including a receiving portion to house the electrode assembly, a junction portion disposed around the receiving portion, formed by bonded films of the case, and gas outlet disposed in the junction portion. The gas outlet includes a first block portion, a second block portion, and a buffering space disposed between the first and second block portions.09-15-2011
20090325040LEAD ACID STORAGE BATTERY - A lead acid storage battery according to the present invention comprises a battery container for housing a plurality of cells, a middle lid for covering the battery container, and an upper lid for covering the middle lid, wherein, on the upper surface of the middle lid, a gas discharging port for discharging the gas generated inside of the cell and an electrolyte recirculating port for recirculating the moisture to be discharged along with the gas within the cell are formed as corresponding to each cell. A plurality of exhaust chambers separated by an exhaust chamber partition are formed in a space surrounded by the middle lid and the upper lid, and a mechanism for collectively exhausting the gas discharged from the gas discharging port to the outside of the battery by interconnecting the plurality of exhaust chambers is comprised.12-31-2009
20090061289Battery Module, Battery Pack, and Method for Producing the Battery Module - An inexpensive battery pack including a battery module wherein a safety valve is provided for each cell in which battery pack gas leakage can be prevented. A battery pack 03-05-2009
20110143176Film-Packed battery and method of manufacturing the same - A film-packed battery includes a battery element and a packing film which houses the battery element and includes a main heat-sealed portion which is formed around the battery element, and a projecting heat-sealed portion which projects from the main heat-sealed portion toward the battery element, and a gas releasing portion formed in the projecting heat-sealed portion and the main heat-sealed portion adjacent to the projecting heat-sealed portion, wherein a distal end of the gas releasing portion reaches the projecting heat-sealed portion and the gas releasing portion connects external air with a heat-sealed interface of the packing film.06-16-2011
20100266879Secondary battery - A secondary battery including a case having a lengthwise direction and including a space therein, an electrode assembly disposed in the space in the case, the electrode assembly including a rolled laminate of a positive electrode plate, a negative electrode plate and a separator interposed therebetween and having non-coating portions at ends thereof, a pair of current collectors, each current collector being electrically connected to one of the non-coating portions of the electrode assembly, each current collector including a current collector plate having an end portion, each end portion extending along the lengthwise direction of the case such that the end portions of the current collector plates of the pair of current collectors are spaced apart from each other in a central region in the lengthwise direction of the case, and a cap plate coupled to a top of the case to seal the case, the cap plate having a vent disposed therein at a position corresponding to the end portions of the current collector plates.10-21-2010
20120196160Secondary battery - A rechargeable battery includes an electrode assembly, a case accommodating the electrode assembly, a cap plate sealing an opening in the case, and electrode terminals extending through the cap plate at opposite ends of the cap plate. The cap plate includes a recessed portion extending in one direction between the electrode terminals.08-02-2012
20100261042STRUCTURE FOR ELECTROCHEMICAL DEVICE TO IMPROVE SAFETY AND ELECTROCHEMICAL DEVICE COMPRISING THE SAME - Disclosed is a sealed structure for an electrochemical device having a hollow space therein, further comprising a material generating gases via thermal decomposition in the hollow space. Also, disclosed is an electrochemical device comprising a cathode, an anode, a separator, an electrolyte, a casing for the device, and the structure for the electrochemical device.10-14-2010
20110111270BATTERY PACK AND HANDHELD POWER TOOL HAVING A BATTERY PACK - The invention relates to a battery pack comprising at least one battery cell and a housing for accommodating the at least one battery cell. It is proposed that the housing is designed as at least double-walled having at least one inner sheath and one outer sheath. According to the invention, an intermediate volume is enclosed between the at least one inner sheath and the outer sheath. The intermediate volume is able to absorb a pressure wave from an internal volume containing the battery cells.05-12-2011
20100239895SECONDARY BATTERY INCLUDING ONE-WAY EXHAUST VALVE - Disclosed herein is a plate-shaped secondary battery constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case, and the battery case is sealed by thermal welding, wherein the secondary battery has at least one valve (one-way exhaust valve), having a small thickness, mounted at a sealed portion, formed at the outer circumference of an electrode assembly receiving part of the battery case, for allowing internal high-pressure gas to be exhausted out of a battery cell and preventing external gas from being introduced into the battery cell. The secondary battery according to the present invention has the effect of effectively exhausting internal high-pressure gas generated during the abnormal operation of the battery, such as overcharge, out of the battery case, while maintaining the sealability of the battery case, thereby simultaneously improving the efficiency and safety of the battery.09-23-2010
20090075159Secondary battery - A secondary battery has a safety vent formed on a can accommodating an electrode assembly. The safety vent is formed in a groove shape and the depth of the groove varies. The fracture site of the safety vent is controlled by adjusting the depth of the safety vent. The safety vent is prevented from damaging the electrode assembly when the electrode assembly is inserted in the can, and contacts the safety vent.03-19-2009
20110129702SECONDARY BATTERY AND BATTERY PACK USING THE SAME - A secondary battery and a battery pack using the same. A secondary battery includes a pouch case containing an electrode assembly therein; an electrode terminal connected to the electrode assembly and including a side end exposed outside the pouch case; and a vent forming unit coupled to the pouch case and configured to form a vent in the pouch case when the pouch case swells.06-02-2011
20090035647Storage equipment and vehicle - A power storage apparatus is provided which has a simple structure, allows ready installation on a vehicle, and enables prevention of an outflow of a coolant when gas is discharged. The apparatus includes an assembled battery, a coolant which cools the assembled battery, a housing container (a battery housing case and a case cover) which houses the assembled battery and the coolant, a gas discharge port formed in the case cover and provided to release the pressure inside the battery housing case to the outside when gas produced in the assembled batter is discharged, an elastic container which communicates with the gas discharge port, and a coolant solidifying agent provided to solidify the coolant flowing into the elastic container from the housing container through the gas discharge port when the gas is discharged.02-05-2009
20110014506Method and Apparatus for Maintaining Cell Wall Integrity Using a High Yield Strength Outer Sleeve - A method and apparatus is provided in which a pre-formed sleeve or pre-formed secondary can comprised of one or more layers of a high yield strength material is positioned around the pre-formed battery case, the pre-formed sleeve/secondary can inhibiting the flow of hot, pressurized gas from within the battery through perforations formed in the battery casing during a thermal runaway event.01-20-2011
20110045325LEAD STORAGE BATTERY - A lead storage battery including a cell, a cell chamber, and a gas exhaust unit. The gas exhaust unit includes a small chamber provided in a battery lid and including a first exhaust path having an opening at the cell chamber side, a covering body mounted on a bottom wall of the small chamber to cover the opening of the first exhaust path, a drop-off prevention member provided in an upper part of the small chamber and including a second exhaust path, a gap formed in at least a part between the bottom wall of a periphery of the opening and the covering body, and space for allowing movement of the covering body between the covering body and the drop-off prevention member in the small chamber. The gas is exhausted to an outside via the first exhaust path, the gap and the second exhaust path.02-24-2011
20110033734Prismatic 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 a ridge portion on each of one or two 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.02-10-2011
20110086251CAP ASSEMBLY COMPRISING GASKET PREVENTED FROM SAGGING AND CYLINDRICAL SECONDARY BATTERY COMPRISING THE SAME - A cap assembly is provided. The cap assembly comprises a main gasket surrounding the outer circumference of a safety vent and an auxiliary gasket surrounding the outer circumference of a current interrupt device (CID). The main gasket is supported by the auxiliary gasket, leaving no space between the main gasket and the safety vent. The cap assembly is constructed such that the auxiliary gasket prevents the main gasket seated on a beading portion from sagging. This construction makes the cap assembly effective in preventing an electrolyte from leaking. Further provided is a cylindrical secondary battery comprising the cap assembly.04-14-2011
20110086252CYLINDRICAL NICKEL-ZINC CELL WITH POSITIVE CAN - Rechargeable nickel zinc cells, and methods of manufacture, of a configuration that utilizes a positive can with a vent cap at the positive pole of the battery are described.04-14-2011
20100003581ELECTRIC POWER STORAGE APPARATUS - An electric power storage apparatus including a housing, a partition which is placed in the housing to form a first housing portion and a second housing portion, a electric power storage unit which is housed in the first housing portion, a coolant which is housed in the first housing portion and is provided for cooling the electric power storage unit, and a pressure release means for releasing an internal pressure of the first housing portion to the second housing portion in an abnormal state of the electric power storage unit in which gas is produced in the electric power storage unit.01-07-2010
20100055544REPLACEABLE AND VERSATILE HERMETICAL LEAD-ACID RECHARGEABLE CELL - A replaceable and versatile hermetical lead-acid cell comprises a top cover and a casing. The top cover has a cap disposed at its top portion. The top cover and casing are sealed together by resin sealable glue filled therebetween. Plural electrode plates, between which dilute sulfuric acid is filled, are positioned in the casing. In addition, a divider is placed between every two electrode plates. Four electrode terminal posts are further provided at the top portion of the top cover and are adjacent to four corners of the top cover. The invention can replace various kinds of cells in marketplace, meet requirements of difference motorcycle, and improve capacity of the cell.03-04-2010
20110097612SECONDARY BATTERY END CAP ASSEMBLY - A secondary battery end cap assembly is extruded integrally, is provided on a cap plate and corresponds to a first perforation and a second perforation of the cap plate. The first perforation corresponds to a gas seal part of the end cap assembly and a side of the gas seal part is extended with a safety valve corresponding to the second perforation to release gas pressure, preventing the battery from being overly recharged that an interior of the battery is too hot and pressure increases, allowing the battery to explode to cause danger. The safety valve is made by a non-metallic material. Hence, a secondary battery end cap assembly is extruded integrally to effectively reduce manufacturing time and improve production efficiency. Furthermore, as the safety valve is penetrated and embedded by extruding a non-metallic material, gas tightness is enhanced without being unriveted and welding problems.04-28-2011
20110097614BATTERY PACK - A battery pack including a plurality of battery units with improved insulating and cooling properties between the battery units is provided. In one embodiment, a battery unit includes a battery cell and an insulating wall including a plurality of protrusions contacting the battery cell. The protrusions extend at least partly between opposite edges of the insulating wall and define space between the battery cell and regions between the protrusions.04-28-2011
20110076527DUAL SEALING CAP ASSEMBLY AND CYLINDRICAL SECONDARY BATTERY INCLUDING THE SAME - The present invention relates to a cap assembly and a battery including the same. More particularly, the present invention relates to a cap assembly for a cylindrical secondary battery, in which the support unit of a current interrupt device (CID) is seated in the inclined portion or the terraced portion of a gasket and thus the battery is dually sealed, thereby preventing the leakage of an electrolyte, and a cylindrical secondary battery including the cylindrical secondary battery. The cap assembly of the present invention is dually sealed for the leakage of an electrolyte. Accordingly, there is an advantage in that the safety of the battery can be greatly improved because the electrolyte is rarely leaked although the battery is shocked because of dropping.03-31-2011
20080254343Electrochemical cell with thermal current interrupting switch - An electrochemical cell having a current interrupting switch as an internal component of the cell that is thermally responsive and breaks an electrical path within the cell thereby preventing current flow when temperature within the cell is at or above an activating temperature. The switch is reversible and current flow and a closed circuit is re-established when temperature within the cell returns below the activating temperature.10-16-2008
20110027630SEALED RECTANGULAR BATTERY AND BATTERY MODULE USING SAME - A sealed rectangular battery excellent in volumetric efficiency and pressure resistance is provided. The sealed rectangular battery includes an electrode group having a positive electrode and a negative electrode and a cell casing for accommodating therein the electrode group and an electrolyte solution, which casing includes a rectangular frame member, a first lid member and a second lid member. Each of the first and second lid members includes a body portion for covering one of the openings of the frame member, and a side portion formed so as to protrude from the body portion substantially along at least one set of sides opposite to each other.02-03-2011
20110052946SAFETY MECHANISM FOR ELECTRIC MECHANISMS OPERATING ACCORDING TO GALVANIC PRINCIPLES - The present invention relates to a device for the controlled transfer of electric mechanisms operating according to galvanic principles from a first operating state into at least a second operating state, in which the functionality and in particular the reaction potential of the electric mechanism operating according to galvanic principles is reduced or completely eliminated.03-03-2011
20110177364NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - Provided is a nonaqueous electrolyte secondary battery using lithium-manganese composite oxide as positive electrode active material, having superior high-temperature charge storage characteristics and charge-discharge cycling characteristics and enhanced safety in the event of overcharging. A nonaqueous electrolyte secondary battery according to an aspect of the invention includes: a positive electrode plate provided with a positive electrode mixture containing positive electrode active material, a negative electrode plate, a nonaqueous electrolyte, and a pressure-sensitive safety mechanism that is actuated by rise in internal pressure. The positive electrode active material contains lithium-manganese composite oxide containing 10 to 61% by mass of the element manganese. The positive electrode mixture contains lithium carbonate or calcium carbonate, and lithium phosphate. The nonaqueous electrolyte contains an organic additive made of at least one selected from among biphenyl, a cycloalkyl benzene compound, and a compound having quaternary carbon adjacent to a benzene ring.07-21-2011
20100159307BATTERY AND BATTERY ENVELOPING ASSEMBLY CONVENIENT FOR ASSEMBLY - A battery enveloping assembly and a battery incorporating such an enveloping assembly are disclosed. The enveloping assembly comprises an explosion-proof assembly and a casing with a cavity. A protruding annular sealing connection portion is provided in the middle of the external surface of the casing. An inner wall of the casing is provided with an annular sealing groove. The explosion-proof assembly is secured in the casing in an insulating and sealing manner through the annular sealing groove. A first through hole through which an electrode is connected to the explosion-proof assembly is provided in a center of a bottom of the casing. A second through hole through which an electrode extends out from the explosion-proof assembly is provided in a top of the casing.06-24-2010
20100159306DEVICE HAVING AT LEAST ONE ELECTROCHEMICAL CELL, AND METHOD FOR OPERATING A DEVICE HAVING AT LEAST ONE ELECTROCHEMICAL CELL - The invention is based on a device having at least one electrochemical cell (06-24-2010
20110189513Sealed Battery Cell and Method of Manufacturing The Same - An upper base portion of a top portion of a battery cell cap functions as a positive terminal, and paths for flow of electrical current are defined between the top portion and portions for welding. The portions for welding are positioned to face a side wall region between a pair of apertures adjacently provided in the top portion, and the current flowing regions are defined between the portions for welding and the side wall regions of the top portion facing to the portions for welding, each forming a symmetrical current flowing region.08-04-2011
20100021801ELECTROCHEMICAL DEVICE ENSURING A GOOD SAFETY - Disclosed is the structure of a center pin assembly inserted into the winding center of a winding-type electrode assembly of an electrochemical device, which has a case containing the winding-type electrode assembly. The center pin assembly can secure the safety of an electrochemical device when physical impact (e.g. squeezing, shock) is applied from the outside, when the internal temperature rises, and/or when the device is overcharged. The center pin assembly includes a center pin manufactured by winding a planar substrate into a tubular shape, the planar substrate having at least two protrusions formed in an embossing type or at least two discontinuous scores formed in a predetermined shape; and a container placed in a space inside the center pin, the container containing a substance capable of improving the safety of the device.01-28-2010
20110135975BATTERY MODULE WITH SEALED VENT CHAMBER - A battery module having sealed vent chamber includes a plurality of electrochemical cells each having a vent at an end thereof. The module also includes a structure defining a chamber and comprising a plurality of sockets, each socket configured to receive one of the plurality of electrochemical cells such that the vents of the electrochemical cells are located in the chamber. The module further includes a seal provided between at least one of the electrochemical cells and its associated socket. At least a portion of the seal is deformable such that gases released from the electrochemical cells into the chamber compress the deformable portion of the seal against the electrochemical cells to seal the gases in the chamber.06-09-2011
20110305927Devices and Methods for Lead Acid Batteries - A bipolar lead acid battery comprises a compression resistant separator in which the electrolyte is retained in a gelled form, and wherein quasi-bipolar electrodes are maintained in a cell stack under pressure. Most preferably, the negative active material further includes a compression resistant spacer structure and the battery is configured as a VR-BLAB where each single cell can independently vent gases during the charge cycle.12-15-2011
20110070470SYSTEM AND METHOD FOR ENHANCED INFORMATION HANDLING SYSTEM BATTERY SAFETY - Enhanced safety is provided in the event of an information handling system catastrophic battery failure by extending a flame container outward from the battery to vent flammable gases through holes having a quenching distance that retards transfer of flames from the battery. For example, telescoping cylinder sections disposed proximate the casing of a battery cell are forced outward as a telescoping assembly when pressure within the casing exceeds a predetermined safety threshold. The flame container vents flammable gases away from other cells of the battery and may direct the vented gases to the exterior of an information handling system housing or to the interior of the housing.03-24-2011
20120308855BATTERY AND PRODUCTION METHOD THEREOF - According to one embodiment, there is provided a battery having a plurality of current collector tabs extended from a plurality of points of a current collector of at least one electrode of a positive electrode and a negative electrode. The battery further has a lid and a lead. The lead has a current collector tab junctional part connected with the current collector tabs, a lid junctional part fixed to the lid, and a vibration absorber part linking the current collector tab junctional part to the lid junctional part.12-06-2012
20110318615ELECTRICAL ENERGY STORAGE DEVICE - Provided is an electrical energy storage device including an electrode winding body, which includes a positive electrode generating electrons by oxidation and reduction, a negative electrode for absorbing the generated electrons, and separation layers for physically separating the negative electrode from the positive electrode, which are sequentially wound around a winding core, and an electrolyte provided between the positive electrode and the negative electrode, the electrical energy storage device including: a terminal plate for connecting the electrode winding body to an external electrode interconnecting member such as an external resistor; a cylindrical can for accommodating the electrode winding body connected to the terminal plate; and a ring-shaped sealing member for closing an opening formed in the can; wherein the sealing member includes a vent part having a vent hole and integrally formed in the center of at least one side of the sealing member. According to the present invention, in which a porous membrane for closing the vent hole or the additional vent hole is expanded and burst in an accommodation hole of the can by an internal pressure of the can in the event that the internal pressure of the can is excessively increased by a long term use or an external factor, it is possible to prevent the can from being deformed or exploded.12-29-2011
20120003513BATTERY SYSTEM HAVING A CHAMBER CONTAINING INERT GAS - A battery module includes a plurality of electrochemical cells. Each cell includes a vent at an end of the cell. The battery module also includes a chamber adjacent the vents of the electrochemical cells. The battery module further includes an inert gas in the chamber for reducing the amount of oxygen present within the chamber.01-05-2012
20120003512SECONDARY BATTERY AND PRODUCTION METHOD THEREOF - A secondary battery includes a battery can 01-05-2012
20120156532SECONDARY BATTERY - A secondary battery includes an electrode assembly including a positive electrode plate and a negative electrode plate laminated with a separator and wound together, a positive electrode tab connected to the positive electrode plate and a negative electrode tab connected to the negative electrode plate, a case having an opening at an upper end to accommodate the electrode assembly and the case being made of a plastic material, and a cap assembly including a positive electrode lead tab electrically connected to the positive electrode tab and a negative electrode lead tab electrically connected to the negative electrode tab and the cap assembly being made of a plastic material to be coupled to the opening of the case.06-21-2012
20110097613Rechargeable battery - A rechargeable battery including an electrode assembly capable of being charged and discharged; a case accommodating the electrode assembly; a cap assembly, the cap assembly including a cap plate coupled to an opening of the case, and a vent member in the cap plate, the vent member being configured to open at a predetermined internal pressure, a terminal exposed to an outer side of the cap plate; a lower insulating member, the lower insulating member insulating the terminal and the cap plate at a lower side of the cap plate; and a channel member between the electrode assembly and the cap plate and forming a space, the channel member being fixed to the lower insulating member.04-28-2011
20120070703Battery Module - The invention relates to a battery module, in particular for a motor vehicle. The battery module has a housing, at least one battery disposed in the housing, and at least one device for dissipating gases or vapors from the at least one battery. According to the invention, the at least one device has at least one element for precipitating at least one toxic and/or environmentally harmful material from the gases or vapors.03-22-2012
20120070704LITHIUM RECHARGEABLE BATTERY - A lithium rechargeable battery includes an insulation case positioned on top of an electrode assembly where the insulation case has least one hole to improve the stability of the battery by evacuating gas that may be generated by the electrode assembly.03-22-2012
20120156531SECONDARY BATTERY - A secondary battery includes an electrode assembly including a first electrode plate, a separator, and a second electrode plate; a first collecting plate electrically coupled to the first electrode plate; a second collecting plate electrically coupled to the second electrode plate; a case containing the electrode assembly, the first collecting plate, and the second collecting plate; a first electrode terminal electrically coupled to the first collecting plate; a second electrode terminal electrically coupled to the second collecting plate; a first plate coupled to the first collecting plate and the first electrode plate and configured to seal the case; a second plate coupled to the second collecting plate and the second electrode terminal; and an insulation plate between the first plate and the second plate.06-21-2012
20110091751Battery Pack - Provision of an extension-type battery pack which is improved in safety thereof against dropping and impact application. Although a battery pack is susceptible to damage caused by an impact since partial battery cells are located outside the outline of a notebook PC when it is mounted on the notebook PC, the battery pack is provided with a partition wall structure including an air space and a fireproof wall formed of a material which does not melt at a temperature of combustible gas discharged from a gas discharge valve of the respective battery cells. The material of the fireproof wall is preferably mica or the like. The partition wall structure can be provided between an inside battery compartment and an outside battery compartment of the battery pack or can be provided among other battery cells. This prevents fire spreading to other battery cells even if high-temperature combustible gas is discharged from a battery cell damaged by an impact or the like.04-21-2011
20110104527SECONDARY BATTERY HAVING SEALING PORTION OF NOVEL STRUCTURE - Disclosed herein is a plate-shaped secondary battery constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case, and the battery case is sealed by thermal welding, wherein the battery case is provided at a sealing portion around an electrode assembly receiving part thereof with an exhaust guide sealing portion configured in a structure in which a width of the exhaust guide sealing portion decreases from an inside of the sealing portion toward an outside of the sealing portion such that a sealing force of the exhaust guide sealing portion is first released, when high-pressure gas is generated in a battery cell, and therefore, the high-pressure gas is exhausted outside, the exhaust guide sealing portion being thermally welded with a sealing force less than that of a sealing portion located at a remaining region (‘a remaining sealing portion’), and the battery case is further provided at a middle of the exhaust guide sealing portion with a bridge sealing portion extending in parallel to the electrode assembly for interconnecting opposite sides of the remaining sealing portion with a predetermined width, the bridge sealing portion being thermally welded with a sealing force greater than that of the exhaust guide sealing portion.05-05-2011
20100247984SEALED CELL - An object of the present invention is to provide a sealed cell having a sealing body with a space-saving safety valve that has excellent safety.09-30-2010
20100247983DEVICE FOR DEGASSING THE BATTERY OF AN AUTOMOBILE - The invention relates to a device for degassing the battery (09-30-2010
20120315513LITHIUM SECONDARY BATTERY - A lithium secondary battery including an electrode assembly; a can accommodating the electrode assembly; a cap assembly coupled with the can, the cap assembly being positioned at a topmost part of the can and having an upper cap including gas discharge holes therein; and a washer coupled with the upper cap, wherein the washer includes a body part, the body part having a flat plate shape and having a centrally disposed connection hole; and insertion parts, the insertion parts extending toward a center of the connection hole from the body part and being arranged in the gas discharge holes.12-13-2012
20120214029RECHARGEABLE BATTERY - A rechargeable battery including an electrode assembly, the electrode assembly including a positive electrode and a negative electrode; a case accommodating the electrode assembly; a cap plate coupled with the case; and a vent member welded to the cap plate, the vent member including a notch thereon, wherein a welded unit, by which the vent member and the cap plate are welded together, is separately formed toward a center of the cap plate in a thickness direction from an outer side of the cap plate so as to be spaced apart from the outer side of the cap plate.08-23-2012
20100173181BATTERY SYSTEM WITH EXHAUST DUCTS - The battery system is provided with battery blocks 07-08-2010
20120171525SECONDARY BATTERY - A secondary battery includes an electrode assembly including a first electrode plate including a first non-coating portion, a second electrode plate including a second non-coating portion, and a separator between the first and second electrode plates; an insulating bag accommodating the electrode assembly and including first and second connection members electrically connected to the first and second non-coating portions, respectively; a case accommodating the electrode assembly and the insulating bag; a cap plate sealing an opening of the case; and first and second electrode terminals electrically connected to the first and second connection members, respectively. An upper part of the insulating bag having an opening is coupled to a lower surface of the cap plate.07-05-2012
20120077061Nickel-Metal Hydride Accumulator - A nickel-metal hydride accumulator for industrial applications has positive nickel hydroxide electrodes and, separated therefrom, negative metal hydride electrodes as well as an alkaline electrolyte surrounding the electrodes. An improved nickel-metal hydride accumulator that is in particular insensitive to influences of temperature has a thermal arrangement which increases the specific thermal capacity of the accumulator and is formed by an additional electrolyte volume, wherein the accumulator comprises a plastics material housing which receives the electrodes and the electrolyte and is provided with a pressure relief valve.03-29-2012
20120177959CYLINDRICAL BATTERY - Provided is a cylindrical battery, comprising a cylindrical battery electrode assembly which is formed by coiling a positive plate and a negative plate separated by a diaphragm and is coiled on a core bar. The cylindrical battery is characterized in that an inner end surface of a positive electrode lead-out terminal located at one end of the cylindrical battery electrode assembly is directly connected with the entire end of the positive plate at the corresponding end of the cylindrical battery electrode assembly, and an inner end surface of a negative electrode lead-out terminal located at the other end of the cylindrical battery electrode assembly is directly connected with the entire end of the negative plate at the corresponding end of the cylindrical battery electrode assembly, so that a bus structure is formed in such a manner that the positive and negative electrode lead-out ends are respectively disposed at two ends of the battery. According to the present disclosure, as the positive and negative electrodes are respectively disposed at two ends of the battery, current of the positive and negative plates flows from the two ends, significantly increasing the high current charge-discharge capability of the battery and effectively improving the performance of heat dissipation in the battery as well as the safety property of the battery.07-12-2012
20120177958SEALED BATTERY TO WITHSTAND INTERNAL PRESSURES AND BATTERY MODULE USING SAME - A sealed rectangular battery excellent in volumetric efficiency and pressure resistance is provided. The sealed rectangular battery includes an electrode group having a positive electrode and a negative electrode and a cell casing for accommodating therein the electrode group and an electrolyte solution, which casing includes a rectangular frame member, a first lid member and a second lid member. Each of the first and second lid members includes a body portion for covering one of the openings of the frame member, and a side portion formed so as to protrude from the body portion substantially along at least one set of sides opposite to each other.07-12-2012
20100009244ELECTRICITY STORAGE DEVICE AND VEHICLE INCLUDING THE SAME - An electricity storage device has an electricity storage unit and a first container in which the electricity storage unit is contained, wherein, when an electricity storage unit abnormality occurs in which gas is produced in the electricity storage unit, the gas is discharged from the electricity storage unit into the first container. The electricity storage device is characterized by including: a first discharging channel for discharging the gas in the first container into the outside of a vehicle; and a second discharging channel for discharging the gas in the first container into a second container.01-14-2010
20120231305SECONDARY BATTERY AND BATTERY PACK HAVING THE SAME - A secondary battery including a case having an opening; an electrode assembly housed in the case; at least one current collector coupled to an uncoated portion of the electrode assembly and forming an electrode terminal, wherein the case has a coupling groove recessed toward the at least one current collector; and a cap plate coupled to seal the opening of the case.09-13-2012
20120231306Battery Pack Venting System - A thermal management system is provided that minimizes the effects of thermal runaway within a battery pack. The system is comprised of a sealed battery pack enclosure configured to hold a plurality of batteries, where the battery pack enclosure is divided into a plurality of sealed battery pack compartments. The system also includes a plurality of battery venting assemblies, where at least one battery venting assembly is integrated into each of the sealed battery pack compartments, and where each of the battery venting assemblies includes an exhaust port integrated into an outer wall of the battery pack compartment and a valve, the valve being configured to seal the exhaust port under normal operating conditions and to unseal the exhaust port when at least one of the batteries within the battery pack compartment enters into thermal runaway.09-13-2012
20130171482NICKEL-ZINC RECHARGEABLE PENCIL BATTERY - A rechargeable pencil battery has a hollow cylindrical positive electrode including nickel hydroxide; a gelled negative electrode comprising at least one of zinc and a zinc compound; a separator interposed between the hollow cylindrical positive electrode and the gelled negative electrode; and a negative electrode current collector inserted into the gelled negative electrode. Rechargeable batteries of the invention are capable of between about 50 and 1000 cycles from a fully charge state to a fully discharged state at a discharge rates of about 0.5 C or greater, in some embodiments about 1 C or greater. Batteries of the invention have a ratio of length to diameter of between about 1.5:1 and about 20:1, and therefore can be longer than typical commercially available batteries but also include batteries of commercial sizes e.g. AAAA, AAA, AA, C, D, sub-C and the like.07-04-2013
20110003184BATTERY HAVING CLOSING PLUG - A rechargeable battery, particularly a lead storage battery, having filling openings that are disposed in the battery cover and lead to the battery cells, closing plugs being provided in said filling openings in a sealing manner, wherein, between the inner wall of the filling opening and the outer wall of the stopper, at least one sealing lip is present, which can be deformed by overpressure in the battery cell, in order to relieve the overpressure.01-06-2011
20120263981EMERGENCY COOLING DEVICE - An energy storage system, in particular a battery having a plurality of battery cells. These battery cells are accommodated in a first container. The first container is separated from a second container by a separating element, which allows for establishing a pressure difference Δp for expansion of a gas out of the first container into the second container.10-18-2012
20110045324Electrochemical Energy Storage device - An electrochemical energy storage device provides problem-free pressure compensation at a permanently high impermeability, includes a storage housing (02-24-2011
20110236732PACKAGE FOR LARGE FORMAT LITHIUM ION CELLS - A battery cell is disclosed. The battery cell includes a sealed foil pouch having a plurality of openings and a terminal block disposed within the sealed foil pouch. The terminal block has a plurality of terminals extending outwardly therefrom. Each of the plurality of terminals extends through one of the plurality of openings. A method of making the battery cell is also disclosed.09-29-2011
20120094153Cross Stripping for High-Rate Lithium Battery Cell Pack - A battery pack comprising a plurality of battery cells being positioned adjacent to one another in a series of rows including a first outer row and a second outer row, a first endcap strip connected to the first row, a second endcap strip connected to the second row, and a plurality of cross-member strips connected to adjacent rows, wherein the first endcap, second endcap, and plurality of cross-member strips join the plurality of battery cells in both parallel and series.04-19-2012
20120328912WINDING ASSEMBLY FOR ELECTROCHEMICAL CELLS, METHODS OF MAKING THE WINDING ASSEMBLY, AND THE ELECTROCHEMICAL CELL - A winding assembly including positive and negative electrodes and a separator sheet wound in an overlying relationship such that the separator sheet is positioned between the positive and negative electrodes, and such that an exposed edge of the positive electrode is spaced longitudinally from an unexposed edge of the negative electrode at one end, and such that an exposed edge region of the negative electrode is spaced longitudinally from an unexposed edge of the positive electrode at an opposite end, and wherein a portion of the positive electrode proximate to the exposed edge of the positive electrode comprises a first plurality of apertures and a portion of the negative electrode proximate to the exposed edge of the negative electrode comprises a second plurality apertures.12-27-2012
20080233468Film-Encased Electric Device and Production Method Therefor - A releasing pressure and a pressure releasing position, when enclosing films are expanded by gas produced at an abnormal time, are easily and positively configured. A film-enclosed battery (09-25-2008
20080226968System and Method for Enhanced Information Handling System Battery Safety - Enhanced safety is provided in the event of an information handling system catastrophic battery failure by extending a flame container outward from the battery to vent flammable gases through holes having a quenching distance that retards transfer of flames from the battery. For example, telescoping cylinder sections disposed proximate the casing of a battery cell are forced outward as a telescoping assembly when pressure within the casing exceeds a predetermined safety threshold. The flame container vents flammable gases away from other cells of the battery and may direct the vented gases to the exterior of an information handling system housing or to the interior of the housing.09-18-2008
20080220315Battery system - A battery module includes a plurality of battery cells and a system configured for passing a fluid past at least a portion of the plurality of battery cells in a parallel manner.09-11-2008
20130177786LITHIUM ACCUMULATOR - A lithium accumulator containing positive and negative electrodes with a minimum thickness of 0.5 mm, separated by separators, where each electrode is deposited into a hole in a frame, as a part of a set of frames arranged in a stack between marginal covers, with electrical insulation between the frames of opposite electrodes and additional current collectors between identical electrodes, wherein each frame comprises at least one channel for passage of a heat exchange media and the channels of the individual frames are interconnected. Liquid accumulator electrolyte may be used as a heat exchange media.07-11-2013
20120251850ELECTRIC STORAGE APPARATUS - An electric storage apparatus has an electric-generating element performing charge and discharge and a case accommodating the electric-generating element and an electrolytic solution. The case has an injection portion, a cap, a worked portion, and a valve. The injection portion is used for injecting the electrolytic solution into the case. The cap closes the injection portion. The worked portion is formed along the outer shapes of the injection portion and the cap by working the wall face of the case. The valve is used for discharging gas produced within the case to the outside of the case and is provided between the injection portion and the worked portion.10-04-2012
20110268999BATTERY, VEHICLE MOUNTING THE BATTERY, AND DEVICE MOUNTING THE BATTERY - A battery includes a current breaking mechanism 11-03-2011
20130136958BATTERY ASSEMBLY WITH HIGH THERMAL CONDUCTIVITY - The invention relates to a battery assembly with high thermal conductivity. The battery assembly comprises a metal case having a hollow accommodation cavity formed therein, a plurality of battery cores installed parallel to one another within the metal case, and a common electrode for connection to the other electrode in each of the battery cores. Each of the battery cores has two electrodes, with one of the electrodes that corresponds to those of the rest of the battery cores being connected in a thermally conductive manner to the metal case. The invention takes advantage of high thermal conductivity of metallic material and dissipates heat by connecting the metal case to the battery electrodes. The invention further comprises fixation troughs formed on the metal case, thereby reducing the size of the assembly.05-30-2013
20130095352NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery has a pressure-sensitive elastic element reliably operating at a desired operating pressure. The battery includes an outer can having an opening; an electrode assembly which is housed in the outer can and comprises a positive electrode having a positive electrode current collector and a negative electrode having a negative electrode current collector; a sealing plate sealing the opening; an external electrode terminal whose one end is engaged with the throughhole of the sealing plate and whose other end projects outside the sealing plate; and a pressure-sensitive elastic element which is disposed inside the sealing plate in the battery and deforms in accordance with an increase in the gas pressure in the battery, the external electrode terminal. The external electrode terminal includes therein a hole connecting the outside of the battery and the space in contact with the outer side of pressure-sensitive elastic element.04-18-2013
20130209842ALKALINE BATTERY - In an alkaline battery in which an opening of a battery case 08-15-2013
20130130071BATTERY PACK - A battery pack has battery cells and bus bars. Each of the battery cells is covered with an exterior case. All the battery cells are electrically connected in series through the bus bars. The battery cells are divided into a first stacked group and a second stacked group arranged adjacent to each other in a lateral direction of the battery pack. The battery cells in each stacked group are stacked in a thickness direction of the battery pack. The stacked groups have a different number of the battery cells in order to make a stair structure. An electrode terminal of one end terminal of the battery cells connected in series is arranged adjacent to the stair structure. A control board is arranged on a lower step part of the stair structure. Devices formed on the control board detect a state of each battery cell.05-23-2013
20130130070BATTERY UNIT - A battery unit has battery cells having electrode terminals, bus bars having voltage potential detection terminals, a control board having a voltage detection circuit and a discharge duct. In the battery cell, the electrode terminals of the battery cells are electrically connected to the voltage potential detection terminals of the bus bars. The voltage potential detection terminals of the bus bars are electrically connected to the voltage detection circuit formed on the control board through metal conductive members or lines. The voltage detection circuit detects a voltage potential of each of the battery cells through the metal conductive members. The metal conductive members are not dedicated components, and integrated with the discharge duct by insert molding.05-23-2013
20130143077ELECTROCHEMICAL CELL PACKAGE - A lithium-ion battery package can include flexible foil, a first conductor patch exposed on the flexible foil, a second conductor patch exposed on the flexible foil, a folded orientation of the flexible foil that includes a contact between the first conductor patch and the second conductor patch, and an expanded orientation of the flexible foil that includes a space between the first conductor patch and the second conductor patch. Various other apparatuses, systems, methods, etc., are also disclosed.06-06-2013
20130177785HIGH TEMPERATURE-PROOF DEVICE FOR LITHIUM BATTERY - The present invention discloses a high temperature-proof device for a lithium battery, which is installed in a casing of a lithium battery. The casing has a sealing board on one face thereof. The sealing board has at least one through-hole where a pressure relief module is installed. The pressure relief module has a top cover protruding from the sealing board. The top cover has at least one exhaust hole and an engagement member arranged inside the top cover. The engagement member has a first exhaust channel. A low-melting point compound is arranged inside the first exhaust channel. The present invention releases the high-temperature gas generated by inappropriate chemical or electric reaction inside a lithium battery. Thus, the present invention can prevent a lithium battery from burning or explosion caused by the high-temperature gas. Therefore, the present invention can effectively promote safety of lithium batteries.07-11-2013
20110236733ENERGY STORAGE DEVICE - An energy storage device includes an electrode unit in which a cathode having a cathode lead, an anode having an anode lead, and a separator located between the cathode and the anode to separate the cathode and the anode from each other are rolled together; a housing receiving the electrode unit; an electrolyte filled in the housing; an inner terminal arranged in the housing to face the electrode unit; and an outer terminal connected to the inner terminal. A groove is formed in a side of the inner terminal, and a side protrusion is formed on an inner wall of the housing at a location corresponding to the groove.09-29-2011
20120258338RECHARGEABLE BATTERY - A rechargeable battery for improving stability by quickly transmitting generated gas to a vent plate when an internal short circuit occurs, the rechargeable battery including: an electrode assembly including a first electrode, a second electrode, and a separator between the first and second electrodes; a case containing the electrode assembly; and a cap plate sealing an opening of the case and including an electrode terminal connected to the electrode assembly, the cap plate further including a round unit arranged at an inner side of the case.10-11-2012
20110274951BATTERY MODULE AND BATTERY MODULE ASSEMBLY USING SAME - A battery module includes a battery unit, a housing, a lid, and a heat-absorbing member. The battery unit includes two or more battery cells. The housing includes a storage part having an open end on at least one surface, and the storage part stores the battery unit. The lid has an opened part, and covers the open end of the housing. The heat-absorbing member is provided in contact with each side surface of each battery unit, and encloses heat-absorbing agent made of liquid or gel fluid.11-10-2011
20130189552CAR POWER SOURCE APPARATUS07-25-2013
20120015219EXPLOSION-PROOF DEVICE FOR USE IN POWER BATTERIES - An explosion-proof device for use in power batteries includes a battery cover defining an explosion-proof hole, a valve seat securely mounted in the explosion-proof hole and hermetically sealing the battery cover, and a rupture film positioned in the valve seat and hermetically sealing the explosion-proof hole. The rupture film is insulatively isolated from the valve seat via an insulative cushion enclosing the rupture film, or an insulative layer formed on the rupture film. In the explosion-proof device of the prevent invention, the rupture film is insulatively isolated from the valve seat, which can prevent the rupture film from being electrochemically corroded.01-19-2012
20120021261ELECTROCHEMICAL CELL WITH A GAS PERMEABLE MEMBRANE - The present invention provides a means for minimizing and improving the reliability and safety of the electrochemical cells such as batteries, capacitors, or the like. The present invention involves forming one or more holes in an electrochemical cell such that the holes are connected to the outside, and attaching a gas permeable membrane around the hole such that the bonded surface of the gas permeable membrane is surface-treated in order to improve bonding properties. Thus, gas generated by the electrochemical cell is discharged to the outside to prevent the internal pressure of the electrochemical cell from rising, thereby reducing the weight and volume of the electrochemical cell and improving the reliability and safety thereof.01-26-2012
20120021260BATTERY MODULE - The battery module includes a plurality of cells serving as cylindrical secondary batteries; and a temperature regulator configured to regulate a temperature of the cells, wherein the cells are aligned with their side surfaces adjacent to each other, all the cells are electrically connected to each other in series, the temperature regulator includes a heat transferring member, and a heat dissipation member, the heat transferring member includes a plurality of insertion portions inserted into space surrounded by the side surfaces of the plurality of cells, and a base portion facing lower surfaces of the cells, at least a part of the heat transferring member which faces the cells is made of an electrically insulative substance, and the cells connected to each other in series are isolated from each other by the heat transferring member in a liquid-tight manner at the side surfaces and bottom surfaces of the cells.01-26-2012
20120021259Rechargeable battery - A rechargeable battery including an electrode assembly; a case accommodating the electrode assembly; a cap plate sealing the case, the cap plate including a vent hole for discharge of gas; and a safety vent at the vent hole, wherein the safety vent includes main groove at a center thereof; and sub groove around the main groove.01-26-2012
20120028089GAS RELEASE FROM A BATTERY CELL - A lithium-ion or polymer-ion battery or generally a battery with electrolyte that is incompatible with water. The battery has a battery cell and a gas-tight casing around the battery cell. A vent is arranged in the casing and configured to allow exit of gases from the battery cell. The vent contains a body with a circumferential wall defining an external surface and a space within the body. The external surface provides a sealing surface configured for hermetic sealing the vent to the casing. The vent further contains a gas separation element for passing through gases from the battery cell and for substantially inhibiting electrolyte of the battery cell from passing through, configured to divide a given portion of the space defined by the circumferential wall into a first chamber and a second chamber. The vent also contains a water separation element within the second chamber, which water separation element further defines the second chamber and substantially prevents entry of water as liquid or humid air through the second chamber to the gas separation element. The vent is configured to enable release of gases from within the battery cell while preventing access of water into the batter cell.02-02-2012
20120028088PRISMATIC SEALED SECONDARY BATTERY - The positive electrode substrate exposed portions or the negative electrode substrate exposed portions, or both, of an electrode assembly is split into two groups, and therebetween is disposed an intermediate member made of a resin material and holding one or more connecting conductive members. Collector members for the substrate exposed portions split into two groups is electrically joined by a resistance welding method to the substrate exposed portions split into two groups, together with the connecting conductive member(s) of the intermediate member. The resin material portion of the intermediate member protrudes, in the extension direction of the substrate exposed portions split into two groups, beyond the ends of the substrate exposed portions split into two groups and the ends of the collector member to a prismatic outer can. This structure enables enhanced resistance between the substrate exposed portions and the collector member and curbs variation in the welding strength.02-02-2012
20130196185PRISMATIC SECONDARY BATTERY - Disclosed is a highly reliable prismatic secondary battery with a current interruption mechanism that is unlikely to be damaged even if the battery is subjected to shock due to vibration, falling, etc. A second insulating member that has a through-hole is disposed between an inversion plate and the first region of a positive electrode collector, and through the through-hole the first region of the positive electrode collector is electrically connected to the inversion plate. First to third projections to formed around the through-hole formed in the second insulating member fit respectively into first to third openings formed in the first region of the positive electrode collector, and the diameters of their apexes are widened, thus forming first to third fixing portions. Thereby, the second insulating member is robustly joined to the first region of the positive electrode collector.08-01-2013
20130196186PRISMATIC SECONDARY BATTERY - A current interruption mechanism for prismatic secondary battery includes a tubular conductive member electrically connected to a positive electrode external terminal, an inversion plate, and a positive electrode collector connected to the inversion plate. The positive electrode collector has a first region that is parallel to a sealing body and a second region that is connected to a positive electrode plate. The boundaries between the first and second regions are disposed further outward than the inner surface of the tubular conductive member, and at least one of the edge portions, other than the boundaries between the first region and second region, is located further outward than the inner surface of the tubular portion of the conductive member. The current interruption mechanism is unlikely to be damaged even if the battery is subjected to shock due to vibration, falling, etc.08-01-2013
20130196187PRISMATIC SECONDARY BATTERY - Disclosed is a prismatic secondary battery in which a second insulating member that has a through-hole is disposed between an inversion plate and a first region of a positive electrode collector, and through the through-hole the first region of the positive electrode collector is electrically connected to the inversion plate by a connecting portion. The positive electrode collector has an annular notch portion that encircles the connecting portions connecting with the inversion plate. The product of the thickness t of the thinnest part of the notch portion and the length L of the notch portion is 0.28 to 0.57 mm08-01-2013
20130209843ELECTRIC STORAGE DEVICE - An electric storage device includes an electrode assembly, a case, and a sealing member. The case includes a gas exhaust portion that opens to exhaust internal gas when an internal pressure increases. The sealing member is affixed to the case. The sealing member includes a protective portion and at least one of a perforation and a thin section having a thickness smaller than another section of the sealing member. The protective portion covers the gas exhaust portion of the case.08-15-2013

Patent applications in class MEANS EXTERNALLY RELEASING INTERNAL GAS PRESSURE FROM CLOSED CELL, I.E., VALVE ETC.

Patent applications in all subclasses MEANS EXTERNALLY RELEASING INTERNAL GAS PRESSURE FROM CLOSED CELL, I.E., VALVE ETC.