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1. 发明公开

EP4216330A1 FORMATION SYSTEM 审中-实审
公开(公告)号：EP4216330A1
公开(公告)日：2023-07-26
申请号：EP23151530.5
申请日：2023-01-13
申请人： Contemporary Amperex Technology Co., Limited
发明人： HE, Zehong , XIE, Dongdong , GUO, Fengyu , HUANG, Caixia , TANG, Minghao
IPC分类号： H01M10/0525 , H01M10/44 , H01M10/04
摘要： The embodiments of the present application relate to the technical field of battery production, and disclose a formation system, comprising a clamp, a suction nozzle, and a negative pressure source, the clamp being used to clamp a battery, the suction nozzle being disposed corresponding to a liquid injection hole of the battery to collect formation exhaust gas from the battery, and the negative pressure source being connected to the suction nozzle to provide negative pressure environment for the suction nozzle, wherein there is a preset distance between the suction nozzle and the liquid injection hole of the battery to prevent electrolyte in the battery from being drawn out. The formation system according to the embodiments of the present application can prevent the loss of electrolyte caused by the electrolyte inside the battery being drawn out of a housing.

2. 发明公开

EP4372902A1 LIQUID INJECTION NOZZLE, AND LIQUID INJECTION DEVICE HAVING SAME 审中-实审
公开(公告)号：EP4372902A1
公开(公告)日：2024-05-22
申请号：EP22918465.0
申请日：2022-12-28
申请人： Contemporary Amperex Technology Co., Limited
发明人： WANG, Dongfeng , HUANG, Caixia , WANG, Zhiming , MIAO, Siyu , LI, Guanzhou , TANG, Minghao , ZHANG, Shengwu
IPC分类号： H01M50/60 , H01M50/609 , H01M50/655
CPC分类号： Y02E60/10 , H01M50/655 , H01M50/60 , H01M50/673 , H01M50/609 , H01M50/627
摘要： Provided in the embodiments of the present application are a liquid injection nozzle and a liquid injection device having same. The liquid injection nozzle comprises a body, a liquid injection pipe and a baffle plate. The body is provided with a channel arranged in a height direction of the liquid injection nozzle, and a lower portion of the channel is provided with a first outlet. The liquid injection pipe penetrates the channel in a reciprocating motion manner in the height direction. The baffle plate is connected to the body, and is configured to cover the first outlet when a lower end portion of the liquid injection pipe is higher than the first outlet, and is configured to be pushed apart by means of the liquid injection pipe when the lower end portion of the liquid injection pipe is lower than the first outlet. By means of the liquid injection nozzle provided in the embodiments of the present application, residual liquid dripping from the lower end portion of the liquid injection pipe can be blocked, such that the influence from the residual liquid on the external environment and other objects is reduced, thereby reducing the pollution; moreover, a liquid to be injected is conveyed through the movable liquid injection pipe, such that the liquid to be injected can be further prevented from adsorption to an inner wall of the body; and especially, for a corrosive liquid to be injected, by means of replacing with a liquid injection pipe made of an applicable material, the liquid injection nozzle is stronger in terms of universality and maintainability.

3. 发明公开

EP4369464A1 SEPARATOR, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC DEVICE 审中-实审
公开(公告)号：EP4369464A1
公开(公告)日：2024-05-15
申请号：EP22952186.9
申请日：2022-07-25
申请人： Contemporary Amperex Technology Co., Limited
发明人： HUANG, Caixia , SHE, Yangfan , GE, Shaobing , LIANG, Jingbing , CHEN, Wei , TANG, Minghao
IPC分类号： H01M10/0587
CPC分类号： Y02E60/10 , H01M10/0587
摘要： The present application relates to a separator, comprising a base film, and a coating arranged on an edge portion of the base film. After the separator, a positive electrode plate and a negative electrode plate are assembled into a cell, an electrolyte storage structure is formed between the separator and the positive electrode plate and/or between the separator and the negative electrode plate, thereby improving the electrolyte storage capacity; and the coating acts as a barrier and can prevent the electrolyte from being squeezed out, improving the electrolyte retention capacity of the cell. In addition, the presence of the electrolyte storage structure allows for the expansion stress of the cell to be released to a certain extent during a cycle process, so as to reduce squeezing forces between the electrode plates and the separator and further reduce the amount of the electrolyte squeezed out. The present application further relates to a secondary battery using the separator, a battery module, a battery pack and an electric device.

4. 发明公开

EP4358222A1 COLUMN-SHAPED BATTERY CELL ROTARY INFILTRATION APPARATUS 审中-实审
公开(公告)号：EP4358222A1
公开(公告)日：2024-04-24
申请号：EP22877865.0
申请日：2022-09-23
申请人： Contemporary Amperex Technology Co., Limited
发明人： LIANG, Jingbing , ZHUO, Shumin , XIAO, Zhongxing , HUANG, Caixia , HUANG, Dengfeng
IPC分类号： H01M10/058 , H01M10/04
CPC分类号： Y02E60/10 , Y02P70/50 , H01M10/04 , H01M10/058
摘要： The present application is applicable to the field of battery production and manufacturing. It proposes a rotary infiltration apparatus for a columnar battery cell (1), including a battery placement mechanism (2) and a driving mechanism (2), where the battery placement mechanism (2) is configured to place a plurality of columnar battery cells (5) to be infiltrated in an array, and the driving mechanism is connected with the battery placement mechanism (2) in a transmission way and drives the battery placement mechanism (2) to drive the columnar battery cell to rotate around its cylindrical axis. The present application significantly shortens time required for battery infiltration and effectively improves production efficiency of the columnar battery cell.

5. 发明公开

EP4266400A1 CARBON FIBER LITHIUM REPLENISHMENT FILM AND PREPARATION METHOD THEREFOR AND SECONDARY BATTERY AND ELECTRICAL DEVICE COMPRISING SAME 审中-实审
公开(公告)号：EP4266400A1
公开(公告)日：2023-10-25
申请号：EP22908802.6
申请日：2022-01-27
申请人： Contemporary Amperex Technology Co., Limited
发明人： MIAO, Siyu , WANG, Zhiming , LI, Guanzhou , HUANG, Caixia , TANG, Minghao
IPC分类号： H01M4/13 , H01M10/0525
摘要： The present application provides a carbon fiber lithium supplement film, a preparation method thereof, a second battery and a power consumption apparatus including the same. The carbon fiber lithium supplement film including a carbon fiber and a lithium supplement agent embedded in the carbon fiber, a diameter of the carbon fiber is 450nm-850nm, and a mass percentage the lithium supplement agent in the carbon fiber lithium supplement film is 40%-80.5%, and optionally 55%-75%. A battery using the carbon fiber lithium supplement film has an improved gram capacity and a first coulombic efficiency.

6. 发明公开

EP4369461A1 BATTERY CELL, BATTERY, ELECTRICAL DEVICE, AND MANUFACTURING METHOD FOR BATTERY CELL 审中-实审
公开(公告)号：EP4369461A1
公开(公告)日：2024-05-15
申请号：EP23755644.4
申请日：2023-01-06
申请人： Contemporary Amperex Technology Co., Limited
发明人： LV, Nangui , ZHAO, Yan , HUANG, Caixia , TANG, Minghao
IPC分类号： H01M10/058 , H01M50/107
CPC分类号： H01M10/052 , H01M50/40 , H01M50/249 , H01M50/298 , H01M10/058 , H01M50/531 , H01M50/172 , H01M50/107 , Y02P70/50 , Y02E60/10
摘要： The present application discloses a battery cell, a battery, an electrical device, and a manufacturing method for the battery cell. The battery cell comprises: an electrode assembly, wherein the electrode assembly is of a winding type structure, and comprises a first electrode sheet, a second electrode sheet, and a separator, the separator being used for separating the first electrode sheet and the second electrode sheet; and an insulating film, wherein the insulating film is wound and wrapped outside the electrode assembly, and a winding start section of the insulating film is connected to the winding end section of the separator. The technical solution provided by the present application can improve the production efficiency of the battery.

7. 发明公开

EP4364877A1 ELECTRODE PLATE SLITTING CUTTER HOLDER AND ELECTRODE PLATE SLITTING MACHINE 审中-实审
公开(公告)号：EP4364877A1
公开(公告)日：2024-05-08
申请号：EP23165963.2
申请日：2023-03-31
申请人： Contemporary Amperex Technology Co., Limited
发明人： WU, Hailian , ZHANG, Qi , GAO, Xijie , FAN, Yanhuang , HUANG, Caixia
IPC分类号： B23D19/00
CPC分类号： Y02E60/10 , B26D1/225 , B23D19/00 , B23D35/004 , B23D35/007 , B26D1/151 , B26D7/1863 , B26D7/204
摘要： The present invention relates to the technical field of battery manufacturing, and provides an electrode plate slitting cutter (100) and an electrode plate slitting machine. The electrode plate slitting cutter (100) comprises: a frame; an upper cutter roller (20), two ends of the upper cutter roller (20) being rotatably connected to the frame; and a lower cutter roller (30), the lower cutter roller (30) being located below the upper cutter roller (20) and arranged in parallel with the upper cutter roller (20), and two ends of the lower cutter roller (30) being rotatably connected to the frame, wherein one of the upper cutter roller (20) and the lower cutter roller (30) is provided with a double-edged cutter, and the other is provided with a cutter groove (221) corresponding to a position of the double-edged cutter.

8. 发明公开

EP4318789A1 BATTERY CELL, BATTERY, ELECTRIC DEVICE, AND METHOD AND DEVICE FOR MANUFACTURING BATTERY CELL 审中-实审
公开(公告)号：EP4318789A1
公开(公告)日：2024-02-07
申请号：EP22922635.2
申请日：2022-01-25
申请人： Contemporary Amperex Technology Co., Limited
发明人： LI, Guanzhou , MIAO, Siyu , WANG, Zhiming , HUANG, Caixia , TANG, Minghao
IPC分类号： H01M50/578 , H02J7/00 , H01M10/44
摘要： Embodiments of the present application provide a battery cell. The battery cell includes: a shell, including a first wall; an electrode assembly, disposed inside the shell; and a terminal assembly, including an electrode terminal and an elastic member, where the electrode terminal includes a fixed portion for electrical connection with the electrode assembly and a movable portion for electrical connection with a current collecting component, the fixed portion is fixedly disposed on the first wall, the movable portion is movably disposed on the first wall, the movable portion has a first position in contact with the fixed portion and a second position separated from the fixed portion, the elastic member is used for applying elastic force to the movable portion to maintain the movable portion in the first position, and where the movable portion is configured to move from the first position to the second position against the elastic force when internal pressure of the battery cell reaches a threshold, so as to release the internal pressure. The battery cell has a long service life.

9. 发明公开

EP4290202A1 DETECTION DEVICE FOR BATTERY CELL 审中-实审
公开(公告)号：EP4290202A1
公开(公告)日：2023-12-13
申请号：EP22880156.9
申请日：2022-09-27
申请人： Contemporary Amperex Technology Co., Limited
发明人： WANG, Zhiming , MIAO, Siyu , SHI, Qiming , HUANG, Caixia
IPC分类号： G01M3/04
摘要： A detection device (20) for battery cells (10) comprises a detection bench (21), a heating apparatus (22) and a detection apparatus (23). The detection bench (21) is provided with an accommodating cavity (21a), the accommodating cavity (21a) being used to accommodate a battery cell (10). The heating apparatus (22) is provided in the accommodating cavity (21a) and used to heat the battery cell (10). The detection apparatus (23) is in communication with the accommodating cavity (21a) and used to detect the composition of gas in the accommodating cavity (21a) to determine whether an electrolyte solution of the battery cell (10) leaks. In the detection device, the battery cell (10) is placed in the accommodating cavity (21a), and the heating apparatus (22) is used to heat the battery cell (10) in the accommodating cavity (21a) to accelerate the vaporization of the electrolyte solution in the battery cell (10) in which electrolyte solution leakage exists and the release into the accommodating cavity (21a), so as to achieve fast and efficient detection of whether the electrolyte solution in the battery cell (10) leaks or not without affecting the structure and performance of the battery cell (10) itself, thereby ensuring the safety of the battery cell (10).

10. 发明公开

EP4397413A1 SEPARATION DEVICE AND MATERIAL SEPARATION METHOD 审中-公开
公开(公告)号：EP4397413A1
公开(公告)日：2024-07-10
申请号：EP22908814.1
申请日：2022-11-25
申请人： Contemporary Amperex Technology Co., Limited
发明人： WANG, Zilei , ZHANG, Qi , ZHUO, Xuesong , FAN, Yanhuang , HUANG, Caixia
IPC分类号： B03C1/02 , B03C1/12 , B03C1/30
CPC分类号： B03C1/12 , B03C1/145 , B03C1/30 , B03C2201/1820130101 , B03C2201/2220130101 , B03C2201/2820130101
摘要： Disclosed are a separation device (100) and a material separation method. The separation device (100) includes a rack (10), a turntable (20), and a magnetic element (30). The turntable (20) is rotatably disposed on the rack (10). The magnetic element (30) is disposed on the turntable (20).

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