Battery module cover material, method for manufacturing the same, and battery module including the same
By forming a specific uneven pattern on the surface of the battery module cover material, the problem of low flatness of the cover material in the prior art is solved, and the consideration of both mechanical strength and flatness is achieved.
Patent Information
- Application Number
- CN202180005022.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2020-03-23
- Filing Date
- 2021-02-25
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2041-02-25
AI Technical Summary
The existing battery module cover material is prone to twist or bend during the forming process, resulting in a significant reduction in flatness and it is difficult to maintain mechanical strength and high flatness at the same time.
By forming a first uneven pattern protruding in the thickness direction and a second uneven pattern recessed in the thickness direction on the surface of the battery module cover, the average recessed depth of the second uneven pattern is controlled within a range of 10% to 80% of the thickness of the cover.
It is achieved to improve the flatness of the battery module cover while maintaining mechanical strength, ensure that the cover is not easily twisted or bent during the molding process, and maintain a high flatness.