Dongguan Amperex Electronics Technology Limited Patent applications |
Patent application number | Title | Published |
20120251877 | SECONDARY LITHIUM ION BATTERY - A secondary lithium ion battery includes an anode electrode having an anode current collector and an anode active material formed on the anode current collector, a cathode electrode having a cathode current collector and a cathode active material formed on the cathode current collector; a separator interposed between the anode electrode and the cathode electrode, and a nonaqueous liquid electrolyte. The anode active material contains lithium titanate and amorphous carbon. The hybrid anode electrode containing lithium titanate and amorphous carbon of the secondary lithium ion battery according to the present invention can reduce swelling of the secondary lithium ion battery during storage or cycle and prolong life span of the secondary lithium ion battery. | 10-04-2012 |
20110052948 | Cell Cap Assembly with Desirable Safety Performance - The present invention provides a cell cap assembly including a grommet defining a through hole, a stripper contact plate defining at least one gas hole securely received in the through hole, an rupture plate securely positioned in the through hole and in electrical connection with the stripper contact plate, and an end cap electrically connected with the rupture plate. The rupture plate includes an outer ring portion, a bent portion extending from the outer ring portion, and a planar recessed portion defining a recess formed at one end of the bent portion. | 03-03-2011 |
20100330416 | ELECTROLYTE INJECTION AND EXPLOSION PROOF DEVICE FOR USE IN POWER BATTERIES - An electrolyte injection and explosion proof device for use in power batteries includes a cover defining an electrolyte injection hole, a rupture plate detachably disposed on the electrolyte injection hole, and an inner liner pressing the rupture plate on the electrolyte injection hole for sealing the same. The rupture plate detachably mounted on the electrolyte injection hole via pressing or clamping can be readily replaced, so that the power battery can be continuously used when the rupture plate is broken. Additionally, the explosion proof device is mounted on the electrolyte injection hole. The number of holes defined in the cover is reduced and the sealing performance of the power battery is remarkably improved. | 12-30-2010 |
20100330402 | CAP 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 |
20100310926 | BATTERY CELL OF A CYLINDRICAL LITHIUM ION BATTERY - A battery cell of a cylindrical lithium ion battery includes an anode plate and a cathode plate wounded together with an insulating separator disposed between the anode plate and the cathode plate. The anode plate includes an anode current collector and an anode film formed on the anode current collector. The anode current collector is formed with an anode exposed portion without the anode film formed thereon. The anode exposed portion is soldered with a number of anode terminals. The cathode plate includes a cathode current collector and a cathode film formed on the cathode current collector. The cathode current collector is provided with a cathode exposed portion without the cathode film formed thereon. The cathode exposed portion is soldered with a number of cathode terminals. The anode terminals and the cathode terminals are disposed at two opposite sides of the battery cell. | 12-09-2010 |
20100291422 | CAP ASSEMBLY FOR USE IN LITHIUM ION BATTERIES - Provided is a cap assembly for use in cylindrical lithium ion batteries. The cap assembly includes an insulating gasket defining a through hole therein, a rupture plate positioned in the through hole, a vent plate soldered on and electrically connected to the rupture plate, a current interrupt device positioned on the rupture plate, and an end cap assembled on the current interrupt device. The current interrupt device can cut off the current path when the battery discharges at a high discharge rate, so as to improve the safety performance of the lithium ion battery. | 11-18-2010 |
20100173205 | ELECTRODE GROUP FOR USE IN A LITHIUM ION BATTERY - An electrode group is configured for use in a lithium ion battery. The electrode group includes an anode plate and a cathode plate wound with a separator interposed therebetween. At least one metal oxide layer is disposed between the anode plate and the cathode plate. The metal oxide layer is provided at two length edges of the anode plate and/or the cathode plate, corresponding to the cutting edge of the cathode current collector where the cut burr formed in cutting process. Even though the cut burrs can pierce through the separator, the cut burrs still cannot contact the anode film. Any internal circuit short, caused by contact between the aluminum foil and the anode film, may therefore be avoided and, therefore, the performance of the lithium ion battery is remarkably improved. | 07-08-2010 |
20100104940 | BATTERY PACK FOR LITHIUM ION BATTERY CELLS - A battery pack configured for lithium ion battery cells includes an inner bonding layer, an intermediate stainless steel layer and an outer protective layer. Due to the arrangement of the intermediate stainless steel layer, the lithium ion battery cell having the battery pack in accordance with the present invention has desirable strength and energy density. | 04-29-2010 |