Separator, electrode assembly, battery and electrical apparatus

WO2025251459A1PCT designated stage Publication Date: 2025-12-11DONGFENG MOTOR GRP
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Patent Information

Application Number
PCT/CN2024/119705
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-06-07
Filing Date
2024-09-19
Publication Date
2025-12-11

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Abstract

A separator, an electrode assembly, a battery and an electrical apparatus, belonging to the technical field of secondary batteries. The separator comprises a base membrane (1) and a coating layer (2), the coating layer (2) being attached to at least a partial area of the base membrane (1). The base membrane (1) comprises a first base membrane (11), an adhesive layer (12) and a second base membrane (13), the adhesive layer (12) being arranged between the first base membrane (11) and the second base membrane (13). The first base membrane (11) is a cellulose separator, and the second base membrane (13) is a polymer separator. By means of combining the cellulose separator and the polymer separator to use the high thermal stability of the cellulose separator and the high tensile strength of the polymer separator, the separator has the characteristics of good thermal stability and high tensile strength, thus solving the problem of bad thermal stability of the separator.
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Citation Information

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