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1. 发明公开

EP4411910A1 SECONDARY BATTERY MANUFACTURING METHOD, GAS DISCHARGE AND ELECTROLYTE INJECTION MECHANISM, AND SECONDARY BATTERY INCLUDING SAME 审中-实审
公开(公告)号：EP4411910A1
公开(公告)日：2024-08-07
申请号：EP23839974.5
申请日：2023-07-12
申请人： LG Energy Solution, Ltd.
发明人： LEE, Jin Soo
IPC分类号： H01M10/04 , H01M50/30 , H01M50/627 , H01M50/645 , H01M50/105 , H01M10/44 , H01M4/04
CPC分类号： Y02P70/50 , Y02E60/10 , H01M4/04 , H01M50/30 , H01M50/105 , H01M50/645 , H01M10/04 , H01M10/44 , H01M50/627
摘要： The present technology provides a method of manufacturing a secondary battery, which may efficiently remove an activation process gas using a gas discharge pipe capable of performing both gas discharge and electrolyte injection and is simplified by simultaneously sealing the gas discharge pipe and sealing a battery case.
In addition, the present technology provides a method of manufacturing a secondary battery, which can reduce the number of sealing operations by injecting an electrolyte before an activation process using a gas discharge pipe with a double pipe structure including a gas discharge passage and an electrolyte injection passage.
In addition, the present technology provides a gas discharge and electrolyte injection device with a structure capable of performing both gas discharge and electrolyte injection, and a secondary battery including the same.

2. 发明公开

EP4254632A1 BATTERY COVER PLATE ASSEMBLY, CYLINDRICAL BATTERY, AND BATTERY PACK 审中-实审
公开(公告)号：EP4254632A1
公开(公告)日：2023-10-04
申请号：EP22817059.3
申请日：2022-10-31
申请人： Eve Power Co., Ltd.
发明人： MIN, Changfei , ZHAO, He , HUANG, Liming , XU, Yuebin , HE, Wei
IPC分类号： H01M50/342 , H01M50/645 , H01M50/152 , H01M50/184 , H01M50/186
摘要： The present application discloses a cap assembly of a battery, a cylindrical battery, and a battery pack. The battery pack includes multiple cylindrical batteries. The cylindrical battery includes a cylindrical shell defining an opening and a cap assembly covering the opening. The cap assembly includes a cap, a pole, a terminal, and a sealing pin. The cap defines a liquid injection hole. The pole is disposed on a first side of the cap. The terminal is disposed on a second side of the cap and electrically connected to the pole. The second side of the cap is opposite to the first side of the cap. The sealing pin is configured to seal the liquid injection hole, and has a thinning region configured for an explosion-proof function.

3. 发明公开

EP4156386A1 BUTTON CELL AND ELECTRONIC DEVICE 审中-实审
公开(公告)号：EP4156386A1
公开(公告)日：2023-03-29
申请号：EP21900120.3
申请日：2021-12-03
申请人： Zhuhai CosMX Battery Co., Ltd.
发明人： PENG, Ning
IPC分类号： H01M50/109 , H01M50/153 , H01M50/181 , H01M50/188 , H01M50/645
摘要： A button cell and an electronic device relate to the technical field of batteries. The button cell includes a housing (10) and a cover assembly (20); the housing includes a bottom wall (11) and an annular side wall (12); the cover assembly includes a top cover (21) having a through hole at its central area and a conductive member (22) covering the through hole; an outer edge of the top cover (21) is welded with a top of the side wall (12) to form an accommodating chamber (101) for accommodating an electrode assembly (30) and an electrolyte; and the conductive member (22) is disposed on a side of the top cover (21) facing the accommodating chamber (101), and the electronic device body includes the button cell. By disposing the conductive member (22) on the side of the top cover (21) facing the accommodating chamber (101), an extrusion force of the conductive member (22) to the top cover (21) is larger than an adhesive force between a conductive member (22) disposed on a side of a top cover (21) away from the accommodating chamber (101) and the top cover (21) in the prior art, thereby increasing the tolerance of the conductive member (22) to the pressure inside the button cell, reducing the damage caused by the button cell explosion, and improving the safety and stability of the button cell.

4. 发明公开

EP4012826A1 BATTERY AND METHOD FOR MANUFACTURING SAME 审中-公开
公开(公告)号：EP4012826A1
公开(公告)日：2022-06-15
申请号：EP21209793.5
申请日：2021-11-23
申请人： Prime Planet Energy & Solutions, Inc.
发明人： MURATA, Ichirou , WAKIMOTO, Ryoichi , MARUBAYASHI, Hironori
IPC分类号： H01M50/103 , H01M50/15 , H01M50/119 , H01M50/159 , H01M50/645 , B21J15/00 , F16B19/00 , H01M10/42
摘要： A battery disclosed herein includes: electrode bodies; an outer package which has an opening and which houses the electrode bodies; a sealing plate which seals the opening of the outer package and which has a through-hole and a recessed portion provided around the through-hole on a surface of a side opposing the electrode bodies; and a sealing member which seals the through-hole of the sealing plate. The sealing member has an inserted portion having been inserted to the through-hole and an enlarged diameter portion which extends from the inserted portion to inside of the outer package and which is formed with a larger diameter than the inserted portion. At least a part of the enlarged diameter portion is arranged inside the recessed portion of the sealing plate.

5. 发明公开

EP4425695A1 BATTERY END COVER ASSEMBLY, BATTERY CELL, BATTERY AND ELECTRIC DEVICE 审中-实审转让
公开(公告)号：EP4425695A1
公开(公告)日：2024-09-04
申请号：EP22942134.2
申请日：2022-05-20
申请人： Contemporary Amperex Technology Co., Limited
发明人： SHANG, Zhitong , CHEN, Congsheng , YU, Mingxi , WEN, Yaoling , LIN, Wenfa
IPC分类号： H01M50/627 , H01M50/645
CPC分类号： Y02E60/10 , H01M50/645 , H01M50/627
摘要： The present disclosure discloses a battery end cover assembly, a battery cell, a battery, and an electrical device. The battery end cover assembly (13) includes an end cover (20) having a liquid injection hole (21) penetrating along a first direction (z), the liquid injection hole (21) includes a first hole segment (211) and a second hole segment (212) divided along the first direction (z); the cross-sectional area of the first hole segment (211) is larger than the cross-sectional area of the second hole segment (212); a stepped surface (213) is formed between the first hole segment (211) and the second hole segment (212); and the stepped surface (213) includes a first inclined surface (213a) inclined toward the second hole segment (212) along the first direction (z).

6. 发明授权

EP4053991B1 END COVER ASSEMBLY, LIQUID INJECTION METHOD AND DEVICE 有权转让
公开(公告)号：EP4053991B1
公开(公告)日：2024-07-03
申请号：EP20936418.1
申请日：2020-05-19
IPC分类号： H01M50/60 , H01M50/15 , H01M50/645 , H01M50/636 , H01M50/148 , H01M50/186
CPC分类号： H01M50/60 , H01M50/645 , H01M50/15 , H01M50/636 , Y02E60/10 , H01M50/148 , H01M50/186 , H01M2220/2020130101

7. 发明公开

EP4224623A1 CYLINDRICAL SECONDARY BATTERY 审中-实审
公开(公告)号：EP4224623A1
公开(公告)日：2023-08-09
申请号：EP23155443.7
申请日：2023-02-07
申请人： Samsung SDI Co., Ltd.
发明人： JUNG, Hyun Ki
IPC分类号： H01M50/645 , H01M50/147 , H01M50/55 , H01M50/627
摘要： A secondary battery according to an embodiment of the present disclosure includes: an electrode assembly having a positive electrode plate and a negative electrode plate; a case for accommodating the electrode assembly and having one side open; a pair of current collector plates electrically connected to the electrode assembly and the case, respectively; and a cap assembly including a cap plate that seals the case and has an injection hole formed therethrough and an injection plug that seals the injection hole from the inside of the case. According to an embodiment of the present disclosure, an electrolyte injection structure may be improved, and thus process efficiency may be improved. In addition, since both the positive electrode and the negative electrode are formed in one direction of the secondary battery, a connection structure with an external terminal may be simplified.

8. 发明公开

EP4167354A1 SECONDARY BATTERY 审中-公开
公开(公告)号：EP4167354A1
公开(公告)日：2023-04-19
申请号：EP22200608.2
申请日：2022-10-10
申请人： Prime Planet Energy & Solutions, Inc.
发明人： TSUJIOKA, Katsuji , TAKABAYASHI, Hiroshi
IPC分类号： H01M50/10 , H01M50/147 , H01M50/184 , H01M50/186 , H01M50/645
摘要： Provided is a technology to suppress a decrease in airtightness around a liquid injection port of a secondary battery. A secondary battery (100) disclosed here has a lid (14, 24, 34) having a liquid injection port (15, 25, 35), a resin washer (60) attached to the liquid injection port (15, 25, 35), and a sealing member (50, 250). The sealing member (50, 250) has a sleeve (51, 251) inserted into the liquid injection port (15, 25, 35) and a flange (52, 252) extending from the sleeve (51, 251) along an outer surface (14a, 24a, 34a) of the lid (14, 24, 34) in an outer diameter direction. The resin washer (60) is installed in the liquid injection port (15, 25, 35) and is sandwiched between the flange (52, 252) and the outer surface (14a, 24a, 34a) of the lid (14, 24, 34). A protrusion (52x, 252x) protruding toward the outer surface (14a, 24a, 34a) of the lid (14, 24, 34) is provided at a radial intermediate portion of the flange (52, 252). A restricting portion that restricts an outer edge of the resin washer (60) is provided in the lid (24, 34) or the sealing member (50).

9. 发明公开

EP4109656A1 END COVER ASSEMBLY, BATTERY CELL, BATTERY AND ELECTRIC DEVICE 审中-实审
公开(公告)号：EP4109656A1
公开(公告)日：2022-12-28
申请号：EP21868372.0
申请日：2021-08-16
申请人： Jiangsu Contemporary Amperex Technology Limited
发明人： LIANG, Chengdu , HUANG, Shoujun , CHEN, Xinxiang , ZHENG, Yulian , WANG, Peng , LI, Wei
IPC分类号： H01M50/30 , H01M50/645 , H01M50/627 , H01M50/147
摘要： The embodiments of the present application provide an end cover assembly, a battery cell, a battery and an electric device. The end cover assembly (10) is used for the battery cell (400). The end cover assembly (10) comprises: an end cover body (1); a pressure relief component (2) connected to the end cover body (1), wherein the pressure relief component (2) is provided with a first through hole (21) used for injecting an electrolyte, and the pressure relief component (2) is configured to be actuated when the internal pressure of the battery cell (400) reaches a threshold value so as to relieve the internal pressure of the battery cell (400); and a closing component (3) detachably provided on the pressure relief component (2), wherein the closing component (3) is configured to close the first through hole (21).

10. 发明公开

EP4398389A1 BATTERY CELL ELECTROLYTE SUPPLY METHOD 审中-实审转让
公开(公告)号：EP4398389A1
公开(公告)日：2024-07-10
申请号：EP22918491.6
申请日：2022-12-29
申请人： Contemporary Amperex Technology Co., Limited
发明人： LIAN, Dengwei
IPC分类号： H01M50/186 , H01M50/645
CPC分类号： Y02E60/10 , H01M50/645 , H01M50/186
摘要： The present application relates to the technical field of new energy, in particular to a battery cell electrolyte supply method. The method comprises: processing a housing of a battery cell at the outside of the battery cell to form a first recess, so that the thickness of a bottom wall of the first recess is smaller than that of the surrounding housing; piercing the bottom wall of the first recess from the outside of the battery cell to the inside of the battery cell so as to form an electrolyte injection structure; and injecting an electrolyte into the battery cell through the electrolyte injection structure. By means of the mode, the present application can supply an electrolyte to a battery cell, thereby improving the performance of the battery cell and prolonging the service life thereof.

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