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| Number | Title | Issue Date |
| 8173284 | Housing for a sealed electrochemical cell An electrochemical cell with a collector assembly for sealing the open end of a cell container. The collector assembly includes a retainer and a contact spring with a peripheral flange, each having a central opening therein. A pressure release vent member disposed b... | 05/08/2012 |
| 8153289 | Secondary 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. T... | 04/10/2012 |
| 8147998 | Secondary battery with rupture groove A secondary battery prevents shorts between electrodes by discharging an electrode assembly downward through a can provided with notches at a lower part thereof when the battery is vertically compressed. The secondary battery includes: an electrode assembly; a can h... | 04/03/2012 |
| 8133602 | Rechargeable battery A rechargeable battery includes an electrode assembly, a case, a cap assembly, and an arc interrupter. The electrode assembly includes an anode, a cathode, and a separator interposed between the anode and the cathode. The case houses the electrode assembly and has a... | 03/13/2012 |
| 8088505 | Film-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 por... | 01/03/2012 |
| 8076015 | Battery cell with improved pressure relief vent An electrochemical cell with a pressure relief vent formed in a metal plate disposed in at least one of the closed end and the open end of the container. The pressure relief vent has an annular ring that includes a reduced thickness groove, interrupted in at least t... | 12/13/2011 |
| 8053099 | Secondary battery A secondary battery is provided with a safety vent that can decrease the increased inner pressure of the secondary battery by being rapidly fractured when the inner pressure of the secondary battery is increased over a predetermined value. The secondary battery is c... | 11/08/2011 |
| 8012617 | Secondary 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 provide... | 09/06/2011 |
| 7927727 | Secondary battery, cap assembly thereof and method of mounting safety valve therefor A secondary battery may be manufactured with an electrode assembly having a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. A container encases the electrode assembly. A hole formed on o... | 04/19/2011 |
| 7927726 | Rechargeable battery The present invention discloses a rechargeable battery that has an improved mounting structure for an electrode terminal and a second protective device used therein. This improved structure improves the function of the rechargeable battery. The rechargeable battery ... | 04/19/2011 |
| 7923138 | Housing for a sealed electrochemical battery cell An electrochemical cell with a collector assembly for sealing the open end of a cell container. The collector assembly includes a retainer and a contact spring with a peripheral flange, each having a central opening therein. A pressure release vent member disposed b... | 04/12/2011 |
| 7906232 | Fuel cell casing with depressurizing cover A fuel cell casing having a laminate structure of a first double-sided adhesive tape, an interposed member, and a second double-sided adhesive tape. The laminate structure may be placed between a casing body and a depressurizing cover. In the fuel cell casing of thi... | 03/15/2011 |
| 7901806 | Film-armored battery and method of manufacturing the battery In a film-packed battery which stores a battery element (9) with packing films (8a, 8b) and sealed by heat-sealing heat-sealed surfaces of the packing films around the battery element, a heat-sealed portion (6) projecting to... | 03/08/2011 |
| 7875376 | Battery can having off-center C-shaped vent An electrochemical cell is provided with an enhanced pressure relief vent formed in a closed end of the cell container that allows for effective venting of gas from the closed end of the container. The cell includes a container having a first end, a second end, a si... | 01/25/2011 |
| 7871719 | Battery module including electrochemical cell with pressure relief feature 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 vi... | 01/18/2011 |
| 7851078 | Secondary battery with a shock absorbing portion A secondary battery includes an electrode assembly, a can receiving the electrode assembly, and a cap assembly coupled to the open upper part of the can. In addition, a vent including an opening, which is thinner than the can is formed on a wide side of the can, and... | 12/14/2010 |
| 7833647 | Closure vent seal and assembly A closure assembly and rupturable vent seal adapted for use in an electrochemical battery cell is disclosed. The vent seal includes a series of peripheral projections that can be folded to insure proper sealing of the vent without wrinkles or overlapping folded port... | 11/16/2010 |
| 7824790 | Housing for a sealed electrochemical battery cell An electrochemical cell with a collector assembly for sealing the open end of a cell container. The collector assembly includes a retainer and a contact spring with a peripheral flange, each having a central opening therein. A pressure release vent member disposed b... | 11/02/2010 |
| 7771863 | Cylindrical secondary battery A cylindrical secondary battery where safety can be secured even when an external pressure accompanying rapid deformation of the battery acts on the battery is provided in a battery having a large capacity. A lithium ion secondary battery has a capacity of 14 Ah, wh... | 08/10/2010 |
| 7771862 | Cap assembly and a safety valve for a secondary battery A secondary battery with a maximized cycle-life having a multi-stage safety valve so as to lower the inner pressure of the battery in stages. The multi-stage safety valve is installed on a case and the secondary battery is equipped with an electrode assembly includi... | 08/10/2010 |
| 7704632 | Electrochemical cell having a vent assembly with a rupturable seal member An electrochemical cell with a vent assembly that reliably prevents resealing of a vented seal member is provided. The vent assembly seals the end of a container that includes a first electrode, a second electrode, a separator located between the first and second el... | 04/27/2010 |
| 7704631 | Secondary battery with improved shock resistance In a secondary battery (1) comprising a battery case (2) for accommodating an electrode plate group (3) and an electrolyte, with one open end of the battery case (2) being sealed with an assembled sealing plate (11) that accommodat... | 04/27/2010 |
| 7687189 | Housing for a sealed electrochemical battery cell An electrochemical cell with a collector assembly for sealing the open end of a cell container. The collector assembly includes a retainer and a contact spring with a peripheral flange, each having a central opening therein. A pressure release vent member disposed b... | 03/30/2010 |
| 7678492 | Battery vent and pressure blowout relief frit The present invention is directed to an improvement in a battery cover having a vent opening, the improvement is a frit that has two functions; namely, it acts to allow gases to escape while preventing liquid to escape and in addition acts as a blowout disk when a p... | 03/16/2010 |
| 7666541 | Ultrasonic metal welding techniques and batteries manufactured using such techniques Batteries are disclosed having a vent opening that is sealed by a metal foil. Methods and tooling for manufacturing such batteries and methods of venting sealed batteries are also disclosed. In some implementations, sealing is performed using ultrasonic metal weldin... | 02/23/2010 |
| 7648794 | Lithium secondary battery and a cap assembly therefor A cap assembly and a lithium secondary battery with the same, in which a shape of a safety vent of a cap plate is such that the safety vent is easily fracturable under low pressure even if the safety vent has a relatively large thickness, thereby improving reliabili... | 01/19/2010 |
| 7579105 | End cap assembly and vent for high power cells And end cap assembly and venting system therein for closing and sealing the open end of a cell housing. The end cap assembly comprises a sealing disk underlying an end cap, and a metal support disk between the end cap and the sealing disk. The metal support disk has... | 08/25/2009 |
| 7550225 | Battery A battery capable of preventing deformation thereof when gas is generated is provided. In the battery, a safety valve is electrically connected to a battery element, and an insulating plate is arranged between the battery element and the safety valve. The safety val... | 06/23/2009 |
| 7527891 | Seal for an electrochemical cell An electrochemical cell with a vent assembly that reliably prevents resealing of a vented seal member is provided. The vent assembly seals the end of a container that includes a first electrode, a second electrode, a separator located between the first and second el... | 05/05/2009 |
| 7517607 | Lithium ion secondary battery A lithium ion secondary battery in which a safety vent as a safety device for a swelling phenomenon functions under a low pressure. A notch is formed in an inner surface of a large-area wall of the secondary battery, and an auxiliary notch is formed in an outer surf... | 04/14/2009 |
| 7459232 | Secondary battery having safety valve and method of manufacturing same An electrode assembly includes a positive plate, a negative plate and a separating plate interposed between those two plates, a container receiving the electrode assembly inside thereof, a cap plate fixed onto an opening of the container to seal the container, and a... | 12/02/2008 |
| 7378179 | Battery accommodation casing, battery module and assembled battery A battery accommodation casing includes a casing member having an approximate flat shape to house a laminate-sheathed cell therein in a sealing manner, a recess having a hollow shape in cross section and formed on a surface of the casing member, and a gas release me... | 05/27/2008 |
| 7341803 | Battery with increased electrode interfacial surface area and increased active materials An alkaline battery cell with improved high rate and high power discharge capacity is provided, without sacrificing capacity at low rate and low power, by adding at least a second anode or cathode, reducing the effective maximum electrode thicknesses, and increasing... | 03/11/2008 |
| 7335439 | Hermetically sealed battery A hermetically sealed battery is provided, equipped with a opening sealing unit 10 including a Positive Temperature Coefficient (PTC) element without reducing the volume of the outside can, and capable of preventing the generation of a large current in case a... | 02/26/2008 |
| 7294430 | Battery having a wound electrode element In a battery having a wound electrode element which is made contact with by means of a pin, a contact connection is fitted on the outer face and is electrically connected to the pin which is arranged in the housing. The connection between the pin and the contact con... | 11/13/2007 |
| 7276092 | Electrochemical element in the form of a button cell, and a method for producing an electrochemical element An electrochemical element in the form of a button cell having at least one lithium-intercalating electrode, wherein the cell cover or the cell cup has an opening which is closed in a sealed manner during the formation process. Once the formation process has been co... | 10/02/2007 |
| 7273675 | Aqueus electrolytic solution primary battery The invention provides a battery including a power generating element container, a positive electrode mixture, and a hydrogen gas permeable sheet provided in an opening of the power generating element container, the hydrogen gas permeable sheet having a water repell... | 09/25/2007 |
| 7252903 | Battery pack The battery 2 of the battery pack is temporarily held in a mold 30 to form a molded resin region 1, synthetic resin injected into the mold cavity 31 to form the molded resin region 1 attaches to the battery 2, and the molded... | 08/07/2007 |
| 7248920 | Apparatus and method for exercising a battery for an implantable medical device A method and apparatus exercise a battery of an implantable medical device by determining whether a film is disposed on a portion of an electrode of a battery, discharging the battery a sufficient amount to reduce the film, and optimizing energy used during exercisi... | 07/24/2007 |
| 7241531 | Battery and a battery encapsulation A battery unit has a battery encapsulation formed by first and second encapsulation parts joined by a weld along a weld zone, with a battery contained in the battery encapsulation between the first and second encapsulation parts. Either the battery has a recess exst... | 07/10/2007 |
