Patent application number | Description | Published |
20100035131 | ELECTROCHEMICAL DEVICE ENSURING A GOOD SAFETY - Disclosed is the structure of a center pin 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 can be manufactured through a simple process and can secure the safety of an electrochemical device when physical impact (e.g. squeezing, shock) is applied from the outside or when the internal temperature rises. The center pin is manufactured by winding a planar substrate, which has at least two protrusions formed in an embossing type or which has at least two scores formed in a predetermined shape, into a tubular shape. | 02-11-2010 |
20100112445 | SECONDARY BATTERY WITH IMPROVED SAFETY - The present invention provides a cathode comprising two or more lithium-containing metal composite oxides, having different potentials versus lithium (Li/Li+) and different impedances, the cathode comprising: (a) a first lithium-containing metal composite oxide; and (b) a second lithium-containing metal composite oxide, which has a high impedance and low potential versus lithium (Li/Li+), compared to those of the first lithium-containing metal composite oxide. In the invention, two or more lithium-containing metal composite oxides are used in combination as cathode components in a battery, whereby, when a short circuit occurs in the battery, the instantaneous flow of a large amount of current can be minimized and, at the same time, the accumulation of heat in the battery can be reduced, thus ensuring the safety of the battery. | 05-06-2010 |
20100323242 | ELECTRODE BINDER FOR SECONDARY BATTERY AND SECONDARY BATTERY USING THE SAME - Disclosed is an electrode binder for a secondary battery, an electrode including the electrode binder, and the secondary battery. The disclosed electrode binder for the secondary battery includes a polymer whose cohesion force with a metal (loid) electrode active material is equal to or more than 100 gf/cm, and adhesion force with an electrode current collector ranges from 0.1 gf/mm to 70 gf/mm, the metal (loid) electrode active material being capable of reversibly storing and discharging lithium, wherein the polymer includes at least one kind selected from the group including polyamide imide, polyamide, polyacrylonitrile, polyacrylic acid and polyvinyl alcohol. | 12-23-2010 |
20110311875 | ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND METHOD FOR PREPARING THE SAME - The disclosure relates to an electrode active material including: (a) first particulate of a metal (or metalloid) oxide alloyable with lithium; and (b) second particulate of an oxide containing lithium and the same metal (or metalloid) as that of the metal (or metalloid) oxide, and to a secondary battery including the electrode active material. When the electrode active material is used as an anode active material, reduced amounts of an irreversible phase such as a lithium oxide or a lithium metal oxide are produced during initial charge-discharge of a battery since lithium is already contained in the second particulate before the initial charge-discharge, and thus a dead volume on the side of the cathode can be minimized and a high-capacity battery can be fabricated. | 12-22-2011 |
20120015233 | Cable-Type Secondary Battery - Provided is a cable-type secondary battery including an inner electrode comprising at least two anodes arranged in parallel that extend longitudinally and have a horizontal cross section of a predetermined shape, an electrolyte layer serving as an ion channel surrounding the inner electrode, an outer electrode comprising a tubular cathode having a horizontal cross section of a predetermined shape and surrounding the electrolyte layer, and a protection coating surrounding the outer electrode. The cable-type secondary battery has free shape adaptation due to its linearity and flexibility. A plurality of inner electrodes within a tubular outer electrode leads to an increased contact area therebetween and consequently a high battery rate. It is easy to control the capacity balance between the inner and outer electrodes by adjusting the number of inner electrodes. | 01-19-2012 |
20120015239 | Cable-Type Secondary Battery - Provided is a cable-type secondary battery including at least one anode extending longitudinally and having a horizontal cross section of a predetermined shape, a first electrolyte layer surrounding the anode and serving as an ion channel, at least one cathode extending longitudinally and having a horizontal cross section of a predetermined shape, the anode and the cathode arranged in parallel, a second electrolyte layer serving as an ion channel commonly surrounding the anode and the cathode, and a protection coating surrounding the second electrolyte layer. The cable-type secondary battery has free shape adaptation due to its linearity and flexibility. Introduction of the electrolyte layer on the electrode prevents a short circuit. The presence of a plurality of electrodes leads to an increased contact area therebetween and consequently a high battery rate. By adjusting the number of the anodes and the cathodes, it is easy to control the capacity balance therebetween. | 01-19-2012 |
20120040244 | ANODE COMPOSITION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY USING THE SAME - An anode composition for a lithium secondary battery includes an anode active material, a binder, and a conductive material. The active material includes a plurality of anode active material particles, each of which includes a core made of metal or metalloid allowing alloying or dealloying with lithium, or a compound containing the metal or metalloid; and a shell formed at an outer portion of the core and having Ketjen black. The conductive material includes carbon nano fiber. The anode composition uses a metal-based anode active material that may controls the volume expansion, and also uses conductive material with excellent dispersion so that the life characteristic of the battery may be improved. | 02-16-2012 |
20120058376 | CABLE-TYPE SECONDARY BATTERY - The present invention relates to a cable-type secondary battery comprising an inner electrode comprising at least two anodes arranged in parallel, the anode extending longitudinally and having a horizontal cross section of a predetermined shape, the anode having an electrolyte layer thereon serving as an ion channel; an outer electrode comprising a cathode including a cathode active material layer surrounding the inner electrode; and a protection coating surrounding the outer electrode. The cable-type secondary battery has free shape adaptation due to its linearity and flexibility. A plurality of inner electrodes within a tubular outer electrode lead to an increased contact area therebetween and consequently a high battery rate. It is easy to control the capacity balance between the inner and outer electrodes by adjusting the number of inner electrodes. A short circuit is prevented due to the electrolyte layer formed on the inner electrode. | 03-08-2012 |
20120094187 | ELECTROLYTE FOR ELECTROCHEMICAL DEVICE, METHOD FOR PREPARING THE ELECTROLYTE AND ELECTROCHEMICAL DEVICE INCLUDING THE ELECTROLYTE - Disclosed is a solid electrolyte for an electrochemical device. The solid electrolyte includes a composite consisting of: a plastic crystal matrix electrolyte doped with an ionic salt; and a network of a non-crosslinked polymer and a crosslinked polymer structure. The electrolyte has high ionic conductivity comparable to that of a liquid electrolyte due to the use of the plastic crystal, and high mechanical strength comparable to that of a solid electrolyte due to the introduction of the non-crosslinked polymer/crosslinked polymer structure network. Particularly, the electrolyte is highly flexible. Further disclosed is a method for preparing the electrolyte. The method does not essentially require the use of a solvent. Therefore, the electrolyte can be prepared in a simple manner. The electrolyte is suitable for use in a cable-type battery whose shape is easy to change due to its high ionic conductivity and high mechanical strength in terms of flexibility. | 04-19-2012 |
20120115040 | Electrolyte For Electrochemical Device, Method For Preparing The Electrolyte And Electrochemical Device Including The Electrolyte - Disclosed is an electrolyte for an electrochemical device. The electrolyte includes a composite of a plastic crystal matrix electrolyte doped with an ionic salt and a crosslinked polymer structure. The electrolyte has high ionic conductivity comparable to that of a liquid electrolyte due to the use of the plastic crystal, and high mechanical strength comparable to that of a solid electrolyte due to the introduction of the crosslinked polymer structure. Further disclosed is a method for preparing the electrolyte. The method does not essentially require the use of a solvent. Therefore, the electrolyte can be prepared in a simple manner by the method. The electrolyte is suitable for use in a cable-type battery whose shape is easy to change due to its high ionic conductivity and high mechanical strength. | 05-10-2012 |
20120121957 | COUPLING SOCKET FOR CABLE-TYPE SECONDARY BATTERY AND COUPLING ASSEMBLY HAVING THE SAME - A coupling socket of a cable-type secondary battery includes a first connection unit capable of being electrically connected to a terminal of a first polarity electrode of a cable-type secondary battery, a second connection unit capable of being electrically connected to a terminal of a second polarity electrode of another cable-type secondary battery, and a body electrically connected to the first connection unit and the second connection unit, wherein at least one of the first connection unit and the second connection unit is pivotal. | 05-17-2012 |
20130295466 | ELECTROLYTE FOR ELECTROCHEMICAL DEVICE, METHOD FOR PREPARING THE SAME AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME - A solid electrolyte for an electrochemical device includes a composite of a plastic crystal matrix electrolyte doped with an ionic salt and a crosslinked polymer structure having a linear polymer as a side chain chemically bonded thereto. The linear polymer has a weight average molecular weight of 100 to 5,000 and one functional group. The electrolyte has high ionic conductivity comparable to that of a liquid electrolyte due to the use of the plastic crystal, and high mechanical strength comparable to that of a solid electrolyte due to the introduction of the crosslinked polymer structure. A method for preparing the solid electrolyte does not essentially require the use of a solvent, eliminating the need for drying. The electrolyte is suitable for use in a cable-type battery whose shape is easy to change due to its high ionic conductivity and high mechanical strength comparable to that of a solid electrolyte. | 11-07-2013 |
20140017567 | ANODE ACTIVE MATERIAL HAVING HIGH DENSITY AND PREPARATION METHOD THEREOF - Provided is an anode active material including lithium metal oxide particles having an internal porosity ranging from 3% to 8% and an average particle diameter (D | 01-16-2014 |
20140027679 | BIMODAL TYPE ANODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - Provided is an anode active material including a compound of Chemical Formula 1 below that may realize a high-density electrode and may simultaneously improve adhesion to the electrode and high rate capability, wherein the compound of Chemical Formula 1 includes first primary particles and secondary particles, and a ratio of the first primary particles to the secondary particles is in a range of 5:95 to 50:50: | 01-30-2014 |
20140038014 | CABLE-TYPE SECONDARY BATTERY - A cable-type secondary battery, includes an electrode assembly including first and second polarity electrodes with a thin and long shape, each electrode having a current collector whose cross-section perpendicular to its longitudinal direction is a circular, asymmetrical oval or polygonal shape, and an electrode active material applied onto the surface of the current collector, and a separator or an electrolyte layer interposed between the first and second polarity electrodes; and a cover member surrounding the electrode assembly. Also, the cable-type secondary battery is provided with a first polarity terminal and a second polarity terminal connected to the first polarity electrode and the second polarity electrode, respectively, at the end of the cable-type secondary battery; and a housing cap configured to fix the first and second polarity terminals and cover the end of the cable-type secondary battery. | 02-06-2014 |
20140170453 | ANODE FOR SECONDARY BATTERY AND SECONDARY BATTERY HAVING THE SAME - The present invention relates to an anode for a secondary battery, comprising: a spiral anode having at least two anode wires which are parallel to each other and spirally twisted, each of the anode wires having an anode active material layer coated on the surface of a wire-type current collector; and a conductive layer formed to surround the spiral anode. | 06-19-2014 |
20140178727 | CABLE-TYPE SECONDARY BATTERY - The present invention relates to a cable-type secondary battery comprising a polymer electrolyte having a first electrolyte layer comprising a mixture of a first polymer and a first organic electrolyte solution in a weight ratio of 50:50 and 80:20; and a second electrolyte layer formed on at least one surface of the first electrolyte layer and comprising a mixture of a second polymer and a second organic electrolyte solution in a weight ratio of 20:80 and 50:50. Since the multiple-layered polymer electrode film of the present invention exhibits good characteristics in terms of both mechanical property and ionic conductivity, the cable-type secondary battery comprising the same according to the present invention has superior battery performances and flexibility, as well as good strength for withstanding external impact. | 06-26-2014 |
20140193681 | CABLE-TYPE SECONDARY BATTERY - The present invention relates to a cable-type secondary battery having a horizontal cross section of a predetermined shape and extending longitudinally, comprising: an inner electrode having an inner current collector and an inner electrode active material layer surrounding the outer surface of the inner current collector; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and an outer electrode surrounding the outer surface of the separation layer and having an outer electrode active material layer and an open-structured outer current collector. | 07-10-2014 |
20140234681 | ANODE FOR CABLE-TYPE SECONDARY BATTERY AND CABLE-TYPE SECONDARY BATTERY COMPRISING THE SAME - The present invention relates to an anode for a cable-type secondary battery, more specifically an anode for a cable-type secondary battery, comprising a spiral electrode consisting of at least two wire-type electrodes which are spirally twisted with each other, each of the wire-type electrodes comprising a wire-type current collector, an anode active material layer formed by coating on the outer surface of the wire-type current collector, and a polymer resin layer formed by coating on the outer surface of the anode active material layer; and a cable-type secondary battery comprising the anode. The anode for a cable-type secondary battery according to the present invention comprises a polymer resin layer formed by coating on the outer surface of an anode active material layer, thereby preventing the release of the anode active material layer from a wire-type current collector and eventually preventing the deterioration of battery performances. | 08-21-2014 |
20140335391 | PACKAGING FOR CABLE-TYPE SECONDARY BATTERY AND CABLE-TYPE SECONDARY BATTERY COMPRISING THE SAME - The present disclosure relates to a packaging for a cable-type secondary battery, surrounding an electrode assembly in the cable-type secondary battery, the packaging having a moisture-blocking layer comprising sealant polymer layers on both outer surfaces of a moisture-blocking film and a moisture-blocking film disposed between the sealant polymer layers, wherein the moisture-blocking layer is a tube form surrounding the electrode assembly, and the sealant polymer layers in both ends of the moisture-blocking layer are overlapped and adhered with each other in a predetermined part. The packaging according to the present disclosure can be used in a cable-type secondary battery to block moisture from being infiltrated into an electrode assembly, thereby improving the life characteristics of the battery and preventing the deterioration of battery performances. | 11-13-2014 |
20140377606 | CABLE-TYPE SECONDARY BATTERY AND PREPARATION THEREOF - The present disclosure provides a cable-type secondary battery, comprising: an inner electrode; and a sheet-form laminate of separation layer-outer electrode, spirally wound to surround the outer surface of the inner electrode, the laminate being formed by carrying out compression for the integration of a separation layer for preventing a short circuit, and an outer electrode. | 12-25-2014 |
20140377609 | CABLE-TYPE SECONDARY BATTERY AND PREPARATION THEREOF - The present disclosure provides a cable-type secondary battery, comprising: an inner electrode; and a sheet-form laminate of separation layer-outer electrode, spirally wound to surround the outer surface of the inner electrode, the laminate being formed by carrying out compression for the integration of a separation layer for preventing a short circuit, and an outer electrode. | 12-25-2014 |
20140377610 | CABLE-TYPE SECONDARY BATTERY AND PREPARATION THEREOF - The present disclosure provides a cable-type secondary battery, comprising: an inner electrode; and a sheet-form laminate of separation layer-outer electrode, spirally wound to surround the outer surface of the inner electrode, the laminate being formed by carrying out compression for the integration of a separation layer for preventing a short circuit, and an outer electrode. | 12-25-2014 |
20140377613 | CABLE-TYPE SECONDARY BATTERY - The present disclosure provides a cable-type secondary battery, comprising: an inner electrode supporter; and a sheet-form laminate of inner electrode-separation layer-outer electrode, spirally wound on the outer surface of the inner electrode supporter, wherein the laminate of inner electrode-separation layer-outer electrode is formed by carrying out compression for the integration of an inner electrode, a separation layer for preventing a short circuit, and an outer electrode. In the cable-type secondary battery of the present disclosure, since the electrodes and the separation layer are adhered to each other and integrated, the separation layer coming into contact with the electrodes absorbs an electrolyte solution to induce the uniform supply of the electrolyte solution into the outer electrode active material layer, thereby enhancing the stability and performances of the cable-type secondary battery. | 12-25-2014 |
20140377614 | CABLE-TYPE SECONDARY BATTERY - The present disclosure provides a cable-type secondary battery, comprising: an inner electrode supporter; and a sheet-form laminate of inner electrode-separation layer-outer electrode, spirally wound on the outer surface of the inner electrode supporter, wherein the laminate of inner electrode-separation layer-outer electrode is formed by carrying out compression for the integration of an inner electrode, a separation layer for preventing a short circuit, and an outer electrode. In the cable-type secondary battery of the present disclosure, since the electrodes and the separation layer are adhered to each other and integrated, the separation layer coming into contact with the electrodes absorbs an electrolyte solution to induce the uniform supply of the electrolyte solution into the outer electrode active material layer, thereby enhancing the stability and performances of the cable-type secondary battery. | 12-25-2014 |
20140377615 | CABLE-TYPE SECONDARY BATTERY - The present disclosure provides a cable-type secondary battery, comprising: an inner electrode supporter; and a sheet-form laminate of inner electrode-separation layer-outer electrode, spirally wound on the outer surface of the inner electrode supporter, wherein the laminate of inner electrode-separation layer-outer electrode is formed by carrying out compression for the integration of an inner electrode, a separation layer for preventing a short circuit, and an outer electrode. In the cable-type secondary battery of the present disclosure, since the electrodes and the separation layer are adhered to each other and integrated, the separation layer coming into contact with the electrodes absorbs an electrolyte solution to induce the uniform supply of the electrolyte solution into the outer electrode active material layer, thereby enhancing the stability and performances of the cable-type secondary battery. | 12-25-2014 |
20140377616 | CABLE-TYPE SECONDARY BATTERY - The present disclosure provides a cable-type secondary battery, comprising: an inner electrode supporter; and a sheet-form laminate of inner electrode-separation layer-outer electrode, spirally wound on the outer surface of the inner electrode supporter, wherein the laminate of inner electrode-separation layer-outer electrode is formed by carrying out compression for the integration of an inner electrode, a separation layer for preventing a short circuit, and an outer electrode. In the cable-type secondary battery of the present disclosure, since the electrodes and the separation layer are adhered to each other and integrated, the separation layer coming into contact with the electrodes absorbs an electrolyte solution to induce the uniform supply of the electrolyte solution into the outer electrode active material layer, thereby enhancing the stability and performances of the cable-type secondary battery. | 12-25-2014 |