-
公开(公告)号：EP4170802A1
公开(公告)日：2023-04-26
申请号：EP21949519.9
申请日：2021-08-31
发明人： KE, Haibo , LI, Quankun , WANG, Peng , CHEN, Xiaobo
IPC分类号： H01M50/342 , H01M50/107 , H01M50/249 , H01M50/375
摘要： The embodiments of the present application provide a case, a battery cell, a battery, and an electrical apparatus, which belong to the technical field of batteries. The case comprises a case body and a pressure relief structure, the case body is used for accommodating an electrode assembly, and the pressure relief structure comprises a plurality of first pressure relief grooves disposed at intervals on the case body along the circumferential direction of the case body. The case body is configured to rupture along the first pressure relief grooves when the pressure or temperature inside the case body reaches a threshold to release the pressure inside the case body. During a pressure relief process, even if one of the first pressure relief grooves is shielded, the case body can still rupture along other first pressure relief grooves, so as to ensure the normal pressure relief of the case body, reduce the risk of fire and explosion of the battery cell, and improve the safety of the battery cell.
-
公开(公告)号：EP4428998A1
公开(公告)日：2024-09-11
申请号：EP23861684.1
申请日：2023-01-18
发明人： KE, Haibo , CHEN, Yanlin , LI, Quankun , GAO, Kai , LU, Xiaokang , Wang, Peng , Jin, Haizu
IPC分类号： H01M50/209
摘要： This application provides a battery cell, a battery, and an electric apparatus. The battery cell (200) includes an electrode assembly (300), a first electrode terminal (431), and a second electrode terminal (432). The electrode assembly (300) includes a body portion (30), where a first tab (34), a second tab (35), and an auxiliary tab (36) are led out of the body portion (30). The first tab (34) and the auxiliary tab (36) are both electrically connected to the first electrode terminal (431), and the second tab (35) is electrically connected to the second electrode terminal (432). The first tab (34) and the auxiliary tab (36) are both electrically connected to the first electrode terminal (431) to increase a current flow area of the tab electrically connected to the first electrode terminal (431), thereby increasing the current flow capacity of the tab electrically connected to the first electrode terminal (431) and consequently improving the performance of the battery cell (200).
-
3.发明公开
公开(公告)号：EP4418444A1
公开(公告)日：2024-08-21
申请号：EP22919438.6
申请日：2022-01-13
发明人： WU, Ningsheng , BAI, Lulu , ZHOU, Wenlin , KE, Haibo , LI, Quankun , WANG, Peng
IPC分类号： H01M50/609
CPC分类号： Y02E60/10 , H01M50/609 , H01M50/593 , H01M50/636 , H01M50/627 , H01M50/103
摘要： Embodiments of the present application provide a battery cell, a battery, a power consumption device, and a battery cell manufacturing method and device. The battery cell includes: a shell, including a first wall provided with a medium injection hole; an electrode assembly, disposed inside the shell; and an insulating member, disposed between the first wall and the electrode assembly to insulate and isolate the first wall and the electrode assembly, where a guide structure is disposed on a side, facing the first wall, of the insulating member, and the guide structure is configured to guide a medium injected from the medium injection hole to an edge of the insulating member, so that the medium enters the interior of the battery cell from the edge of the insulating member. The battery cell has high safety.
-
公开(公告)号：EP4123813A1
公开(公告)日：2023-01-25
申请号：EP21936252.2
申请日：2021-05-28
发明人： ZHU, Jianping , ZHANG, Xiaoxi , KE, Haibo , CHEN, Heng , CAO, Junqi
IPC分类号： H01M50/30
摘要： Embodiments of this application provide an end cap assembly (23), a battery cell (20), a battery (100), an electrical device, and a method and device (2000) for manufacturing a battery cell (20), and relate to the technical field of batteries (100). The end cap assembly (23) includes an end cap (233) and a pressure relief mechanism (234). The pressure relief mechanism (234) is connected to the end cap (233). The pressure relief mechanism (234) is configured to: keep in a first pressure relief state when an internal pressure or temperature of the battery cell (20) is greater than or equal to a first threshold and less than a second threshold, so as to release the internal pressure of the battery cell (20); and keep in a second pressure relief state when the internal pressure or temperature of the battery cell (20) is greater than or equal to the second threshold, so as to release the internal pressure of the battery cell (20). A pressure relief area in the first pressure relief state is smaller than a pressure relief area in the second pressure relief state. The pressure can be released rapidly when the internal pressure or temperature of the battery cell (20) is relatively high, thereby improving the pressure relief capability and ensuring the internal pressure to be constant at all times. Without needing to reserve a gas storage space, the pressure relief mechanism (234) does not occupy an internal space of the battery cell (20), and does not affect the energy density of the battery cell (20).
-
公开(公告)号：EP4325644A1
公开(公告)日：2024-02-21
申请号：EP21962789.0
申请日：2021-11-02
发明人： KE, Haibo , LI, Quankun , WANG, Peng , XING, Chengyou , WU, Ningsheng , YANG, Kaihuan , MEI, Xiang , WU, Lili
IPC分类号： H01M50/30 , H01M50/342 , H01M50/375
摘要： The present application belongs to the technical field of batteries. Provided are an end cap assembly, a battery cell, a battery, and an electric apparatus. The end cap assembly comprises an end cap and a pressure relief member, wherein the pressure relief member is arranged on the end cap, is provided with a notch groove, and is configured to split along the notch groove when the internal pressure or temperature of a battery cell reaches a threshold, so as to relieve the internal pressure of the battery cell; and the hardness of the pressure relief member is less than the hardness of the end cap. The usage of an end cap assembly of this structure facilitates the machining of a notch groove on a pressure relief member, which is beneficial to ensuring the machining precision of the notch groove; in addition, the notch groove does not need to be machined too deep, such that the thickness of a groove bottom wall of the notch groove is increased, the anti-deformation capacity of the pressure relief member is improved, and a phenomenon of decline of the impact resistance capacity due to deformation of the groove bottom wall of the notch groove under the action of an external force is reduced, which is beneficial to ensuring the stability of the pressure relief pressure of the pressure relief member, thereby reducing the risk of fire and explosion of a battery cell during use.
-
公开(公告)号：EP4425674A1
公开(公告)日：2024-09-04
申请号：EP22928117.5
申请日：2022-06-30
发明人： KE, Haibo , LI, Quankun , YANG, Kaihuan , XING, Chengyou , MEI, Xiang , WANG, Peng , LEI, Yuyong
IPC分类号： H01M50/342 , H01M50/10 , H01M50/244
CPC分类号： Y02E60/10 , H01M50/10 , H01M50/103 , H01M50/30 , H01M50/249 , H01M50/242 , H01M50/342 , H01M50/244 , H01M50/209 , H01M2220/3020130101 , H01M2220/2020130101 , H01M50/317 , H01M50/3425
摘要： The present application provides a battery cell, a battery, and an electrical apparatus, and belongs to the technical field of batteries. The battery cell comprises a housing, a pressure relief mechanism and a protective part. The housing is provided with a stepped hole communicated with the interior of the housing, the stepped hole comprises a first hole section and a second hole section which are arranged in a first direction, and the first hole section is located on the side of the second hole section facing away from the inside of the housing. The pressure relief mechanism and the protective part are respectively arranged in the second hole section and the first hole section, and the protective part covers at least a portion of the pressure relief mechanism. A battery cell with such a structure reduces the phenomenon of the protective part protruding out from the outer surface of the housing, which, on the one hand, protects the protective part, reducing the risks of friction or breakage of the protective part during the utilization process, helping the protective part protect the pressure relief mechanism and thus improving the service life and utilizational stability of the battery cell, and, on the other hand, reduces the amount by which the protective part increases the volume of the battery cell, thus reducing the amount of space occupied by the battery cell.
-
公开(公告)号：EP4456278A1
公开(公告)日：2024-10-30
申请号：EP22942298.5
申请日：2022-07-06
发明人： KE, Haibo , LI, Quankun , MAO, Guoan , WANG, Peng
IPC分类号： H01M50/15 , H01M50/159
摘要： Provided in the embodiments of the present application are an end cap assembly, a battery cell, a battery and an electric device. The end cap assembly comprises an end cap and a pressure relief member, wherein the end cap is provided with a recess portion sunk towards the interior of the battery cell, and the pressure relief member is arranged in the recess portion; and the distance between a top surface of the pressure relief member that deviates from the interior of the battery cell and the recess bottom of the recess portion is less than or equal to the depth of the recess portion. Therefore, the pressure relief member does not protrude from the top surface of the end cap, and the pressure relief member does not additionally occupy the space of the battery cell in a height direction. On the premise that the total height of the battery cell is not changed, the interior space of the battery cell using the end cap assembly is larger, so that more pole pieces can be accommodated in the battery cell, and thus the active substance capacity of the battery cell can be increased, thereby improving the energy density of the battery cell.
-
公开(公告)号：EP4435962A1
公开(公告)日：2024-09-25
申请号：EP23864124.5
申请日：2023-01-19
发明人： KE, Haibo , CHEN, Yanlin , LI, Quankun , YANG, Kaihuan , YU, Fan , WANG, Peng
IPC分类号： H01M50/588 , H01M50/593
摘要： This application discloses a battery cell (10), a battery, and an electric apparatus. The battery cell (10) includes a housing (100) and a barrier member (130). The housing (100) has an inner cavity, the housing (100) has a first wall (121), and a weak portion (400) is provided on the first wall (121). The barrier member (130) is arranged in the inner cavity of the housing (100), and the barrier member (130) is provided on at least part of the periphery of the weak portion (400). In the battery cell (10) of this application, the barrier member (130) blocks at least part of the weak portion (400) from the side of the inside of the housing (100), thereby preventing the electrolyte from continuing to flow from a position at which the barrier member (130) is located to a position close to the weak portion (400), reducing the contact between the electrolyte and the weak portion (400), and providing better protection for the weak portion (400).
-
公开(公告)号：EP4429008A1
公开(公告)日：2024-09-11
申请号：EP23887180.0
申请日：2023-01-19
发明人： KE, Haibo , MEI, Xiang , LI, Quankun , WANG, Peng , WU, Ningsheng , YANG, Kaihuan
摘要： This application discloses a battery cell (10), a battery, and an electric apparatus. The battery cell (10) includes a housing (100) and a shielding member (300). The housing (100) has an inner cavity, the housing (100) has a first wall (121), and the first wall (121) is provided with a weak portion (400). The shielding member (300) is disposed in the inner cavity, and the shielding member (300) covers at least a portion of the weak portion (400) in a thickness direction of the first wall (121). In the battery cell (10) of this application, the shielding member (300) covers at least a portion of the weak portion (400) from the inside of the housing (100), thereby preventing direct contact between the electrolyte and the at least a portion of the weak portion (400), protecting the weak portion (400).
-
公开(公告)号：EP4184668A1
公开(公告)日：2023-05-24
申请号：EP21953031.8
申请日：2021-08-31
发明人： KE, Haibo , LI, Quankun , WANG, Peng
IPC分类号： H01M50/103
摘要： Embodiments of the present application provide a pressure relief device, a battery cell, a battery and an electrical device, which belong to the technical field of batteries. The pressure relief device comprises a pressure relief body and a pressure relief structure. The pressure relief structure comprises a first score groove, a second score groove and a third score groove provided on the pressure relief body, wherein the first score groove and the third score groove are arranged at an interval, the first score groove and the third score groove both intersect with the second score groove, and the first score groove, the second score groove and the third score groove jointly define a pressure relief portion. The pressure relief portion is configured to split with the first score groove, the second score groove and the third score groove as boundaries when the pressure or temperature inside the battery cell reaches a threshold, so as to relieve the internal pressure. During the pressure relief process by the pressure relief device, the pressure relief portion splits with the first score groove, the second score groove and the third score groove as boundaries. This increases the pressure relief area of the pressure relief device, thereby improving the pressure relief rate of the pressure relief device, reducing the risk of fire and explosion of the battery cell, and improving the safety of the battery cell.
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.018 秒)
