BATTERY CELL, BATTERY, AND ELECTRONIC DEVICE - NINGDE AMPEREX TECHNOLOGY LTD

Title:

BATTERY CELL, BATTERY, AND ELECTRONIC DEVICE

Document Type and Number:

WIPO Patent Application WO/2021/196000

Kind Code:

A1

Abstract:

The present application relates to a battery cell, a battery, and an electronic device. The battery cell comprises an electrode assembly and a packaging bag for accommodating the electrode assembly; the packaging bag comprises a sealing portion; the electrode assembly comprises a first tab and a second tab. The sealing portion comprises first areas and second areas. At least one part of the first tab and at least one part of the second tab penetrate out of the first areas, the packaging strength of each first area is S1, and the width of the first area is W1 in the length direction of the battery cell; the second areas are connected to the first areas, the packaging strength of each second area is S2, and the width of the second area is W2 in the length direction of the battery cell. The S1, W1, S2, and W2 satisfy the following relational expression: (I). The battery cell provided in the present application is good in heat dissipation effect and high in safety performance in a high-temperature environment, and dangers such as outbreak of a fire and explosion caused by heat accumulation of the battery cell are reduced.

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Inventors:

YAN DONGYANG (CN)
ZENG QIAO (CN)
XIAO LIANGZHEN (CN)

Application Number:

PCT/CN2020/082540

Publication Date:

October 07, 2021

Filing Date:

March 31, 2020

Export Citation:

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Assignee:

NINGDE AMPEREX TECHNOLOGY LTD (CN)

International Classes:

H01M2/02

Foreign References:

CN108123176A	2018-06-05
CN206480713U	2017-09-08
CN110391356A	2019-10-29
JP2014120390A	2014-06-30
CN107785617A	2018-03-09
JP2017069218A	2017-04-06

Other References: