Title:
BATTERY PACK AND ELECTRICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/011454
Kind Code:
A1
Abstract:
Provided in the present application are a battery pack and an electrical device. The battery pack comprises a battery pack box body and battery cells accommodated in the battery pack box body, an internal space of the battery pack box body consists of n regions of i1, i2,…, in in total, and n is a positive integer greater than or equal to 2. The i(m-1)th battery cells are configured in the i(m-1)th region, the imth battery cells are configured in the imth region, the imth battery cells are arranged surrounding peripheries of the i(m-1)th battery cells, and m in turn takes a value of each positive integer greater than 1 and less than or equal to n. The i(m-1)th battery cells and the imth battery cells are each provided with a first discharge voltage platform and a second discharge voltage platform, and the average discharge voltage of the first discharge voltage platform is higher than the average discharge voltage of the second discharge voltage platform. The positive electrode active material of the i(m-1)th battery cells and the positive electrode active material of the imth battery cells are each formed by mixing a first positive electrode active material having a first discharge voltage platform and a positive electrode functional auxiliary agent having a second discharge voltage platform, and the positive electrode functional auxiliary agent is a lithium vanadium oxide. In each of the i(m-1)th battery cells and the imth battery cells, when the sum of the discharge capacities corresponding to the first discharge voltage platforms and the discharge capacities corresponding to the second discharge voltage platforms is 100%, the discharge capacity ratios corresponding to the second discharge voltage platforms of the imth battery cell are larger than the discharge capacity ratios corresponding to the second discharge voltage platforms of the i(m-1)th battery cells.
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Inventors:
ZHU CHANG (CN)
LIU HONGYU (CN)
BIE CHANGFENG (CN)
OUYANG SHAOCONG (CN)
XU BAOYUN (CN)
XIE TINGZHEN (CN)
FU CHENGHUA (CN)
LIU HONGYU (CN)
BIE CHANGFENG (CN)
OUYANG SHAOCONG (CN)
XU BAOYUN (CN)
XIE TINGZHEN (CN)
FU CHENGHUA (CN)
Application Number:
PCT/CN2022/105501
Publication Date:
January 18, 2024
Filing Date:
July 13, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/02; H01M50/207; H01M50/593
Domestic Patent References:
| WO2012132525A1 | 2012-10-04 |
Foreign References:
| CN107004920A | 2017-08-01 | |||
| CN105161756A | 2015-12-16 | |||
| CN103700817A | 2014-04-02 | |||
| CN101714629A | 2010-05-26 |
Attorney, Agent or Firm:
BEIJING CHEN QUAN INTELLECTUAL PROPERTY LAW FIRM (CN)
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