Contemporary Amperex Technology (Hong Kong) Limited

Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology Co., Limted

Zhejiang Geely Holding Group Co., Ltd

Zhejiang Liankong Technologies Co., Ltd

Contemporary Amperex Technology Limited

Lingyan Jiang

Peng Wang

Quankun Li

Chengdu Liang

Chengyou Xing

Yuanbao Chen

Wenlong Kang

Ningsheng Wu

Zhiyang Wu

Daichun Tang

Xiaoming Ge

Zhisheng Chai

Xiaoxi Zhang

Baiqing Li

Qinglin Bai

Tao Liang

Xiang Hong

Shengwang Chen

Dongsheng Sun

Wei Zhong

Zhoufu Li

Xigui Long

Chunyang Peng

Shan Gao

Weigan Xie

The present disclosure relates to an end cover assembly, a battery cell, a battery pack and a device. The end cover assembly includes a cover assembly, a terminal assembly, a sealing piece and a first connected flow channel. The cover assembly is provided with an installation hole, and the installation hole penetrates through the cover assembly along an axial direction of the installation hole; the terminal assembly is installed in the installation hole; the sealing piece is configured to seal the installation hole; the first connected flow channel is arranged in at least one of the terminal assembly and the cover assembly, and the first connected flow channel is configured as follows: when the sealing of the sealing piece is invalid, the first connected flow channel enables the inside and the outside of the housing to be communicated through the installation hole.

End cover assembly, battery cell, battery pack and device

This application provides a battery cell, a battery, and an electrical device. The battery cell includes a shell, an electrode post, an electrode assembly, and an insulation piece. The shell includes a sidewall and a first end wall connected to the sidewall. The electrode post is dielectrically mounted on the first end wall of the shell. The electrode assembly is located in the shell. The electrode assembly includes a first tab. The first tab faces the first end wall and is electrically connected to the electrode post. The insulation piece includes a first insulation portion located between the bottom wall and the first tab, and a second insulation portion peripherally disposed at an outer edge of the first insulation portion and protrudes toward a side at which the electrode assembly is located.

Battery cell, battery, and electrical device

Embodiments of the present disclosure provides a battery cell, a battery, an electrical device and a device for preparing a battery cell. The battery cell includes a housing being hollow and including an opening, and an end cover assembly includes an end cover and an insulator. The end cover is configured to be connected to the opening of the housing and at least the part of the end cover is inserted into the housing. A part of the end cover inserted into the housing includes an end surface and a first side surface. The end surface is substantially perpendicular to an insertion direction of the end cover. The first side surface is distributed along a periphery of the end surface and is opposite to an inner wall surface of the housing.

Battery cell, battery, method and device for preparing a battery cell

The present application relates to the field of batteries, in particular to a battery, a battery module and an electric equipment. The battery of the present application includes: a connection member, including a first connection portion configured to be electrically connected with an electrode assembly and a second connection portion configured to be electrically connected with an electrode terminal, and the first connection portion is in a folded state along a crease relative to the second connection portion; the crease is arranged between a first end face and a second end face of the first connection portion; and when the connection member is in an expanded state, the second end face and the first end face are arranged along a length direction.

Battery, battery module and electric equipment

The present application relates to a secondary battery, a battery module and an apparatus. The secondary battery includes an electrode assembly and a casing. The electrode assembly includes a main body portion and a tab portion, the tab portion extending out from the main body portion along an end of the main body portion and including an outer peripheral surface. The casing includes an accommodating hole for accommodating the electrode assembly. The casing includes a limiting protrusion. The outer peripheral surface extends around an axis of the accommodating hole. The limiting protrusion protrudes toward the tab portion and presses against the outer peripheral surface of the tab portion. The limiting protrusion is adapted to limit a position of the tab portion. The secondary battery provided by the present application can reduce the possibility of fatigue fracture of the adapting piece.

Secondary battery, battery module, and apparatus

A secondary battery, a battery pack, and an electric device. The secondary battery includes: a case with an inner cavity in which an electrolyte is included; a cap assembly covering an opening of the case; and an electrode assembly located in the inner cavity, the electrode assembly including an electrode unit and tabs, and along a length direction, the electrode unit including two side portions disposed oppositely, the tabs extending from the side portions; a connecting component configured to connect the tabs and the cap assembly; a flow guiding component located between a corresponding connecting component and a corresponding side portion, being connected to the connecting component and provided with an avoiding portion configured to avoid the tabs, and being in contact with the electrolyte, at least part of the flow guiding component being in contact with the corresponding side portion, and the flow guiding component.

Secondary battery, battery pack and electric device

The present disclosure relates to a secondary battery, a battery module, and a device using the secondary battery as a power source. The secondary battery includes a casing and a top cover for connecting with the casing. The casing includes an end portion provided with an opening. The top cover is used to cover the opening of the casing. The top cover includes an inserting portion extending into the casing from the opening. A plurality of notches are provided on an inner side of the end portion of the casing or on a side wall of the inserting portion facing the casing. In the secondary battery, the battery module, and the device using the secondary battery as a power source according to the present disclosure, the secondary battery can reduce the possibility of short circuit occurring in the electrode assembly and improve the operational safety of the secondary battery.

Secondary battery, battery module, and device using secondary battery as power source

This application relates to a positive electrode plate and a lithium-ion secondary battery, wherein the positive electrode plate comprises a positive electrode current collector and a positive active material layer disposed on at least one surface of the positive electrode current collector, wherein the positive active material layer comprises a first positive active material LiNiMeMOAand a second positive active material LiMnZOB, and wherein the positive electrode plate satisfies: 0.04&#x2264;R&#xb7;P/C&#x2264;10, wherein R is the resistance of the positive electrode plate, and the unit of R is &#x3a9;; P is the packing density of the positive electrode plate, and the unit of P is g/cm; C is the single-side areal density of the positive electrode plate, the unit of C is g/1540.25 mm. The lithium-ion secondary battery in this application simultaneously has high safety performance, low-temperature kinetic performance, high-temperature cycle performance and high-temperature storage performance.

Positive electrode plate and lithium-ion secondary battery

The present disclosure provides a positive electrode additive and a preparation method thereof, a positive electrode plate and a lithium-ion secondary battery. The positive electrode additive comprises a modified lithium carbonate. The modified lithium carbonate comprises a lithium carbonate particle and a polymer coating. The polymer coating coats a surface of the lithium carbonate particle and comprises a polymer. The positive electrode additive of the present disclosure has low cost and simple preparation method, when the positive electrode additive is applied in lithium-ion secondary battery, it can significantly improve lithium-ion secondary battery safety performance without affecting electrical performance of the lithium-ion secondary battery.

Positive electrode additive and preparation method therefor, positive electrode plate and secondary lithium ion battery

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Ningde, China

Lingyan Jiang