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21. 发明公开

EP4311011A1 BATTERY CELL AND POWER CONSUMING APPARATUS 审中-实审
公开(公告)号：EP4311011A1
公开(公告)日：2024-01-24
申请号：EP21932131.2
申请日：2021-03-24
申请人： Ningde Amperex Technology Limited
发明人： LIU, Yadong , JIN, Zhesheng
IPC分类号： H01M50/531 , H01M10/0587
摘要： A battery cell and an electrical device. The battery cell includes a shell (100), an electrode assembly (200), a tab (300) and an insulation element (400). The electrode assembly (200) is provided with two opposite first side faces (201), and each first side face (201) is provided with a first end (2011) and a second end (2012) that are opposite to each other. The tab (300) includes a connecting portion (310) and an extending portion (320), the connecting portion (310) is connected to the electrode assembly (200), and the extending portion (320) and the connecting portion (310) are welded and fixed, and form a weld mark. The insulation element (400) includes a hot melting portion (410) and an insulating portion (420). The hot melting portion (410) is fixed to the first side face (201); and the insulating portion (420) is connected to the hot melting portion (410), is fixed to the tab (300), and covers at least part of the weld mark. The insulation element (400) covers the at least a part of the weld mark, which can reduce or eliminate an area of contact between the weld mark and the shell (100), thereby reducing potential safety hazards of the battery cell possibly being punctured by the weld mark of the tab (300).

22. 发明公开

EP4303945A1 ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, ELECTRODE ASSEMBLY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME 审中-公开
公开(公告)号：EP4303945A1
公开(公告)日：2024-01-10
申请号：EP23174489.7
申请日：2023-05-22
申请人： Samsung SDI Co., Ltd.
发明人： HA, Jaehwan , KIM, Taejoong , KIM, Suhyun , PARK, Seok Gyun , KIM, Hyunhee , AN, Hoyong , YOO, Heeeun , KIM, Duckhyun
IPC分类号： H01M4/04 , H01M10/0587 , H01M4/36 , H01M10/42
摘要： An electrode for a rechargeable lithium battery includes a current collector, a safety functional layer, an active material layer, and an insulating layer, wherein in a longitudinal direction of the current collector, one surface of the current collector is partitioned into a first region and a second region spaced apart from the first region, the safety functional layer and the active material layer are sequentially stacked in the first region, the insulating layer is disposed on the second region, and the electrode satisfies Equation 1: a>b
In Equation 1, a and b are as defined in the specification.

23. 发明授权

EP3518313B1 SECONDARY BATTERY 有权
公开(公告)号：EP3518313B1
公开(公告)日：2024-01-10
申请号：EP17853344.4
申请日：2017-09-13
发明人： LEE, Chiyoung , BYUN, Sangwon , JANG, Myungjae
IPC分类号： H01M10/04 , H01M10/0587

24. 发明公开

EP4300636A1 POLE PIECE, BATTERY CELL, BATTERY AND ELECTRICAL APPARATUS 审中-实审
公开(公告)号：EP4300636A1
公开(公告)日：2024-01-03
申请号：EP22924567.5
申请日：2022-05-09
申请人： Contemporary Amperex Technology Co., Limited
发明人： CHAI, Zhisheng , HE, Changsheng , JIN, Haizu
IPC分类号： H01M4/66 , H01M10/0587
摘要： An electrode plate, a battery cell, a battery and an electrical device are provided in the embodiments of the present application. The electrode plate comprises an insulating substrate, a conductive layer, and an active material layer. The conductive layer is arranged on the surface of the insulating substrate. The active material layer is applied on the surface of the conductive layer away from the insulating substrate, the conductive layer comprising a first part coated with the active material layer and a second part not coated with the active material layer, and the first part and the second part are arranged along the first direction. The conductive layer has a resistivity of ρ1, a specific heat capacity of C, a density of ρ2, and a constant K=ρ1/(C·ρ2). The conductive layer has a thickness of d1, the first part has a size of W along the first direction, and d1, W and K satisfy: 0.001 J/(Ω·mm 4 ·°C)≤d1/(K·W)≤0.0075 J/(Ω·mm 4 ·°C). In the present application, the value of d1/(K·W) is limited to 0.001 J/(Ω·mm 4 ·°C)-0.0075 J/(Ω·mm 4 °C) to balances energy density and cycle performance of the battery cell.

25. 发明公开

EP4270629A3 CYLINDRICAL BATTERY CELL WITH OVERMOLDED GLASS FEEDTHROUGH 审中-实审
公开(公告)号：EP4270629A3
公开(公告)日：2024-01-03
申请号：EP23192814.4
申请日：2019-09-06
申请人： Apple Inc.
发明人： SHIU, Brian K , PASMA, Christopher R. , CHEUNG, Gerald K. , BALARAM, Haran , LIU, Junhua
IPC分类号： H01M10/052 , H01M10/0587 , H01M10/04 , H01M50/107 , H01M50/169 , H01M50/186 , H01M50/191 , H01M50/548 , H01M50/559
摘要： The disclosed technology relates to an electrical feedthrough for a cylindrical battery cell. The electrical feedthrough may include an annular channel having an outer sidewall, an inner sidewall, and a base; an insulator formed of glass having an overmold portion; and a pin extending through the insulator and configured to form an external battery terminal. The insulator is bonded to the inner sidewall of the annular channel and a portion of the base of the annular channel. The overmold portion prevents electrical contact between a set of electrodes and the electrode feedthrough.

26. 发明公开

EP4287304A1 NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-实审
公开(公告)号：EP4287304A1
公开(公告)日：2023-12-06
申请号：EP22745733.0
申请日：2022-01-21
申请人： Panasonic Energy Co., Ltd.
发明人： MIZUKOSHI, Fumikazu , SAKITANI, Nobuhiro
IPC分类号： H01M4/133 , H01M4/134 , H01M4/62 , H01M10/0587
摘要： Provided is a non-aqueous electrolyte secondary battery having improved charge and discharge cycle characteristics. The non-aqueous electrolyte secondary battery according to one mode of the present disclosure comprises an electrode body (14) in which a band-form positive electrode (11) and a band-form negative electrode (12) are wound with a separator (13) interposed therebetween, an electrolytic liquid, and an exterior body (15) that accommodates the electrode body (14) and the electrolytic liquid. The negative electrode (12) has a negative electrode current collector (40), and a negative electrode mixture layer (42) that is formed on the surface of the negative electrode current collector (40) and that contains a negative electrode active material and an electroconductive agent. In the negative electrode mixture layer (42), the electroconductive agent content in a winding outer end (42b) is greater than the electroconductive agent content in a winding inner end (42a), the negative electrode mixture layer (42) having a region in which the electroconductive agent content continuously increases from the winding-inner-end side (42a) to the winding-outer-end side (42b).

27. 发明公开

EP4283747A1 ELECTRODE SHEET DEVIATION CORRECTION METHOD, APPARATUS, DEVICE, STORAGE MEDIUM, AND PRODUCT 审中-实审
公开(公告)号：EP4283747A1
公开(公告)日：2023-11-29
申请号：EP22919428.7
申请日：2022-01-13
申请人： Contemporary Amperex Technology Co., Limited
发明人： LU, Haoran , FENG, Shiping , CHANG, Wen , ZHENG, Qiuhui , CHEN, Canbin , WU, Qing
IPC分类号： H01M10/0587 , H01M10/0525
摘要： The present application discloses an electrode plate deviation correction method, apparatus, device, storage medium and product. The electrode plate deviation correction method includes: collecting, by sensors, deviation data of an edge of an electrode plate relative to a preset boundary; determining a deviation correction displacement of the electrode plate according to the deviation data; controlling, according to the deviation correction displacement, an unwinding apparatus for the electrode plate to adjust a position of the electrode plate so that the deviation data of the electrode plate relative to the preset boundary is within a target range. According to embodiments of the present application, the problem that an electrode plate deviation cannot be corrected timely, which in turn affects product quality of the battery can be solved.

28. 发明公开

EP4280338A1 WINDING DEVICE AND METHOD FOR WINDING MATERIALS 审中-实审
公开(公告)号：EP4280338A1
公开(公告)日：2023-11-22
申请号：EP22925254.9
申请日：2022-09-30
申请人： Contemporary Amperex Technology Co., Limited
发明人： XIE, Chao , WANG, Yiruo , CHEN, Yaojin , ZHAO, Wankui , HUANG, Guoda , HU, Shengsheng
IPC分类号： H01M10/0587 , H01M10/04
摘要： Embodiments of the present application relate to the field of battery manufacturing technologies, and particularly to a winding device and a material winding method; the winding device is configured to wind a material and includes: a winding switching mechanism, a compounding mechanism and a breaking mechanism, wherein the winding switching mechanism includes a rotating disc and a plurality of winding pins arranged on the rotating disc at intervals, and the material is wound around one winding pin along a preset path; the compounding mechanism is provided upstream of the winding pin along the preset path and configured to laminate and then compound the plural layers of materials at a preset position; the breaking mechanism is provided between the compounding mechanism and any winding pin along the preset path and configured to break the compounded plural layers of materials at a compounding region. The adoption of the winding device and the material winding method according to the embodiments of the present application can prevent the plural layers of materials from being layered at the breakage moment and after breakage, thereby avoiding or alleviating misalignment between the plural layers of materials.

29. 发明公开

EP4277010A1 ELECTRODE ASSEMBLY AND ENERGY STORAGE DEVICE 审中-实审
公开(公告)号：EP4277010A1
公开(公告)日：2023-11-15
申请号：EP22821828.5
申请日：2022-10-12
申请人： Eve Power Co., Ltd.
发明人： DING, Dapei , CHEN, Qiang , YAN, Bo , LIU, Jing , XU, Yuebin , HE, Wei
IPC分类号： H01M50/533 , H01M10/0587 , H01M10/052
摘要： The present application provides an electrode assembly and an energy storage device. The electrode assembly includes an electrode assembly body and a current collector. The electrode assembly body is wound in shape; the current collector is arranged at an end of the electrode assembly body and includes multiple current collector units each bent towards an axis of the electrode assembly body, and an angle between each current collector unit and the axis of the electrode assembly body is in a range from 0° to 90°. In the present application, the multiple current collector units are arranged in an orderly manner toward the center of the electrode assembly, which is conducive to improving the subsequent welding stability of the current collector units with the sink plate. The multiple current collector units are arranged in an orderly manner toward the center of the electrode assembly, such that the current collector does not rotate and there is no friction, and no metal chips are generated during processing, which will not affect the safety performance of the electrode assembly and thus ensure the safety performance of the energy storage device.

30. 发明公开

EP4235947A3 LASER WELDED LITHIUM-ION BUTTON CELL BATTERY COMPRISING A TOP PLATE 审中-实审
公开(公告)号：EP4235947A3
公开(公告)日：2023-11-15
申请号：EP23173798.2
申请日：2021-06-08
申请人： Zhuhai Zhi Li Battery Co., Ltd.
发明人： SUN, Fajiong , WANG, Fang , YANG, You qing , LI, Zhen , YANG, Zui , WANG, Yi heng
IPC分类号： H01M50/109 , H01M50/119 , H01M50/148 , H01M50/153 , H01M50/169 , H01M50/159 , H01M50/56 , H01M10/04 , H01M10/0525 , H01M10/0587 , H01M50/342
摘要： A rechargeable lithium-ion button cell battery having a sealed housing includes a top flat plate and a round or oval cup sealed by laser at the rim of top plate whereas connecting the opening end of the cup sidewall. The top plate has a centered sandwiched structure including two outer plates at upper and lower position, that clamping one inner pin-like conductive plate by its flange, insulated by a gasket. The upper plate of the outer plates has an asymmetric shape to its center line, which allows asymmetric sealing force applied on the inner pin-like plate flange to act as a safety vent. Inside the sealed housing the anode and cathode electrodes are either spiral wound or stacked with separator to be a round or oval roll, one electrode is connected to the cup, the other electrode is connected to the inner pin-like conductive plate of the top plate.

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