公开(公告)号：US20210104795A1

公开(公告)日：2021-04-08

申请号：US17125331

申请日：2020-12-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haizu JIN ,  Dongyang SHI ,  Zhenhua LI ,  Fei HU ,  Ning CHEN

IPC: H01M50/148 ,  H01M10/0587 ,  H01M50/155 ,  H01M50/171

Abstract: A secondary battery and a battery unit is provided. The secondary battery includes: a housing including an accommodating hole with an opening; a top cover assembly connected to the housing in a sealed manner to cover and close the opening; an electrode assembly arranged in the accommodating hole, wherein the top cover assembly is spaced apart from the electrode assembly to form a first buffer gap for buffering the amount of expansion deformation of the electrode assembly in the axial direction. When the secondary battery expands, the first buffer gap can absorb the amount of expansion deformation to prevent the top cover assembly from being disconnected from the housing due to excessive stress, so as to reduce the possibility of failure of the secondary battery due to damage of the overall structure, thereby ensuring the structural integrity and the safety of the secondary battery.

公开(公告)号：US20200212406A1

公开(公告)日：2020-07-02

申请号：US16424026

申请日：2019-05-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu JIN ,  Dongyang SHI ,  Ning CHEN ,  Zhenhua LI

IPC: H01M2/26

Abstract: The disclosure relates to a secondary battery and a battery module. The secondary battery comprises: a case comprising a receiving hole having an opening; a cap assembly connected with the case to close the opening; an electrode assembly disposed in the receiving hole, wherein the electrode assembly comprises two end surfaces opposite to each other in a first direction and tabs extending from respective end surfaces, and there are two or more electrode assemblies stacked in the axial direction; and a current collector comprising an extending portion and a current collecting portion connected to the tab, wherein the extending portion extends in the axial direction, the current collecting portion comprises a connecting end extending in a second direction perpendicular to both the axial direction and the first direction, and is connected to an end of the extending portion away from the cap assembly through the connecting end.

公开(公告)号：US20240030562A1

公开(公告)日：2024-01-25

申请号：US18372137

申请日：2023-09-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zelin JIN ,  Wei CHEN ,  Tong PEI ,  Dongyang SHI ,  Chuan LI

IPC: H01M50/533 ,  H01M50/103 ,  H01M50/15 ,  H01M50/526 ,  H01M50/548 ,  H01M50/209 ,  H01M10/04

CPC classification number: H01M50/533 ,  H01M50/103 ,  H01M50/15 ,  H01M50/526 ,  H01M50/548 ,  H01M50/209 ,  H01M10/049 ,  H01M2220/20

Abstract: A battery cell may include: a housing, provided with a first opening at one end along a first direction; a first end cover, configured to seal the first opening, where the first end cover includes an end cover body and a first electrode terminal provided on the end cover body; an electrode assembly, provided inside the housing, where the electrode assembly may include a main body and a first tab led out from the main body; and a first adapter, including a first portion, a second portion, and a third portion, where the first portion may be located on a side, from which the first tab may be led out, of the main body and electrically connected to the first tab, and the second portion may be located on a side of the main body close to the first end cover and connected to the first portion.

公开(公告)号：US20230361415A1

公开(公告)日：2023-11-09

申请号：US18353987

申请日：2023-07-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Donglai ZHENG ,  Dongyang SHI ,  Hao MA ,  Baiqing LI

IPC: H01M50/30 ,  H01M50/169 ,  H01M50/102 ,  H01M50/183

CPC classification number: H01M50/30 ,  H01M50/169 ,  H01M50/102 ,  H01M50/183 ,  H01M2220/20

Abstract: A battery cell, a battery, and an electrical device are provided. The battery cell comprises: a case with an opening; an electrode assembly accommodated within the case; and an end cover closing the opening, wherein the end cover is in sealed connection with the case through a first connection area and a second connection area, the strength of the first connection area is less than the strength of the second connection area, and the first connection area is configured to be actuated to release an internal pressure of the battery cell when the internal pressure exceeds a threshold. The battery cell, battery, and electrical device provided in the present application are capable of reducing the manufacturing cost of battery cells while ensuring the safety of batteries, and further reducing the assembly processes of the battery cells.

公开(公告)号：US20220221519A1

公开(公告)日：2022-07-14

申请号：US17705524

申请日：2022-03-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dongyang SHI ,  Sitong LIU ,  Haizu JIN ,  Baiqing LI

IPC: G01R31/36 ,  G01R31/392 ,  H01M10/44 ,  G01R31/378

Abstract: Provided are a battery charging method and device, and a storage medium that are applicable to a lithium-ion battery with an N/P range of 0.5 to 1.1. The method includes: obtaining, by a power management system, a state of health (SOH) loss of the lithium-ion battery; and determining a charge cut-off voltage of a next charge process based on the SOH loss, an initial charge cut-off voltage of the lithium-ion battery, and a voltage correction factor, where the initial charge cut-off voltage is determined based on the N/P, and the charge cut-off voltage increases with increase of a count of charging. The N/P range is 0.5 to 1.1, thereby reducing the dosage of the negative electrode and reducing cost. In addition, the charge cut-off voltage of the next charge process is increased based on the SOH loss, thereby ensuring that the lithium-ion battery is free from lithium plating.

公开(公告)号：US20210328304A1

公开(公告)日：2021-10-21

申请号：US17360307

申请日：2021-06-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Kaijie YOU ,  Peng WANG ,  Haizu JIN ,  Dongyang SHI ,  Zhenhua LI ,  Ning CHEN ,  Fei HU

IPC: H01M50/383 ,  H01M50/342 ,  H01M50/209

Abstract: The disclosure provides a battery pack, which includes a plurality of batteries and a box, the plurality of batteries accommodated in the box; each battery including an explosion-proof valve; the box including a lower box for supporting the batteries and an upper box matching the lower box, wherein the upper box includes an upper plate and a lower plate, the upper plate covers the lower plate to form an accommodating space for accommodating a fire extinguishing agent; the explosion-proof valve of each battery faces the lower plate of the upper box, and the lower plate is set to be able to discharge the fire extinguishing agent from the accommodating space after being melted. When the battery occurs a thermal runaway, the fire extinguishing agent in the lower plate flows rapidly to the runaway area, thus inhibiting the thermal runaway of the battery.

公开(公告)号：US20210119298A1

公开(公告)日：2021-04-22

申请号：US17138639

申请日：2020-12-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingdi CHEN ,  Kaijie YOU ,  Haizu JIN ,  Linggang ZHOU ,  Peng WANG ,  Dongyang SHI

IPC: H01M50/30 ,  H01M10/48 ,  H01M50/147 ,  H01M50/204 ,  H01M50/24 ,  H01M50/143

Abstract: This application relates to the field of energy storage components, and in particular, to a protective plate, a battery unit assembly, a battery module group, and a vehicle. The protective plate is provided with a guide groove. The protective plate is configured to shield an explosion-proof valve of a battery cell. The guide groove is configured to be disposed corresponding to the explosion-proof valve, and is configured to guide a flow direction of a flame ejected from the explosion-proof valve. In this application, the guide groove is disposed on the protective plate to guide the flame to a direction away from passengers, thereby protecting the passengers from injury.

公开(公告)号：US20200212518A1

公开(公告)日：2020-07-02

申请号：US16571810

申请日：2019-09-16

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu JIN ,  Dongyang SHI ,  Fei HU ,  Kaijie YOU ,  Xingdi CHEN

IPC: H01M10/613 ,  H01M10/6555 ,  H01M10/653 ,  H01M10/04

Abstract: A battery module including a first battery group, a second battery group, a cooling plate, and a plurality of busbars electrically connected with a plurality of battery cells. The cooling plate is placed between the first battery group and the second battery group, and the two surfaces of the cooling plate are respectively bonded onto the first battery group and the second battery group with thermally conductive adhesive, the first battery group and the second battery group can be mounted close to the cooling plate, thus increasing the heat dissipation area and improving the heat dissipation effect.

公开(公告)号：US20200212379A1

公开(公告)日：2020-07-02

申请号：US16817289

申请日：2020-03-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dongyang SHI ,  Yuanbao Chen ,  Ning Chen ,  Haizu Jin ,  Zhenhua Li ,  Fei Hu

IPC: H01M2/04 ,  H01M2/26 ,  H01M2/06 ,  H01M10/0525

Abstract: The present disclosure provides a secondary battery and a battery module. The secondary battery includes an electrode assembly, a case and a cap assembly. The case has an accommodating cavity, and the electrode assembly is accommodated in the accommodating cavity. The electrode assembly comprises electrode units stacked in an axial direction of the accommodating cavity. The cap assembly comprises a cap plate and a vent piece, the cap plate is connected with the case and positioned at a side of the electrode assembly in the axial direction. The cap plate is provided with a through-hole, and the vent piece covers the through-hole. The cap plate has a first inner surface, the vent piece has a second inner surface, and a distance between the first inner surface and the electrode assembly is larger than a distance between the second inner surface and the electrode assembly.

公开(公告)号：US20240055706A1

公开(公告)日：2024-02-15

申请号：US18495544

申请日：2023-10-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wei CHEN ,  Zelin JIN ,  Dongyang SHI

IPC: H01M50/176 ,  H01M50/103 ,  H01M50/119 ,  H01M50/124 ,  H01M50/121 ,  H01M50/15 ,  H01M50/159 ,  H01M50/171 ,  H01M50/474 ,  H01M50/54

CPC classification number: H01M50/176 ,  H01M50/103 ,  H01M50/119 ,  H01M50/1243 ,  H01M50/1245 ,  H01M50/121 ,  H01M50/15 ,  H01M50/159 ,  H01M50/171 ,  H01M50/474 ,  H01M50/54 ,  H01M2220/20

Abstract: A battery includes a plurality of groups of electrode assemblies and an insulating housing. The insulating housing includes a plurality of accommodating spaces, each accommodating space has an opening. Adjacent accommodating spaces are separated by a barrier. Each accommodating space is used to accommodate one group of the electrode assemblies. The battery further includes an end cover provided with a plurality of pairs of electrode terminals. Each pair of electrode terminals corresponds to one of the accommodating spaces. The end cover is connected to the insulating housing, and covers openings of the plurality of accommodating spaces, so as to enclose the plurality of groups of electrode assemblies in the plurality of accommodating spaces.