Title:
BATTERY AND DEVICE COMPRISING BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/215781
Kind Code:
A1
Abstract:
A battery and a device comprising the battery, relating to the field of batteries. The battery comprises a positive electrode sheet (1), a negative electrode sheet (2) and an electrolyte; a positive electrode current collector (10) comprises an insulating layer (101) and a conductive layer (102), the insulating layer (101) is used for bearing the conductive layer (102), the conductive layer (102) is used for bearing a positive electrode active material layer (11), the conductive layer (102) is located on at least one surface of the insulating layer (101), the conductive layer (102) has a thickness of D2, D2 satisfies: 300 nm ≤ D2 ≤ 2 μm, and a protective layer (103) is provided on at least one surface of the conductive layer (102); and a negative electrode current collector (20) is a copper foil current collector having a thickness of 1 μm to 5.9 μm. The battery can improve the safety performance of the battery, has good rate performance, and can also improve the weight and energy density of the battery.
Inventors:
LIANG CHENGDU (CN)
HUANG HUAFENG (CN)
HUANG QISEN (CN)
HUANG HUAFENG (CN)
HUANG QISEN (CN)
Application Number:
PCT/CN2019/129166
Publication Date:
October 29, 2020
Filing Date:
December 27, 2019
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/66; H01M10/0525; H01M10/058
Foreign References:
| CN103762379A | 2014-04-30 | |||
| CN107123812A | 2017-09-01 | |||
| CN108258236A | 2018-07-06 | |||
| CN106654285A | 2017-05-10 | |||
| CN103460464A | 2013-12-18 | |||
| JP2008192364A | 2008-08-21 |
Attorney, Agent or Firm:
UNI-INTEL PATENT AND TRADEMARK LAW FIRM (CN)
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