Secondary batteries and power consumption devices

JP7885433B2Active Publication Date: 2026-07-06CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
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Patent Information

Application Number
JP2025504457
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-02-13
Publication Date
2026-07-06
Estimated Expiration
2043-02-13

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Abstract

This application provides a secondary battery and a power consumption device. The secondary battery includes a negative electrode plate, the negative electrode plate includes a negative electrode current collector and a negative electrode film layer. The negative electrode film layer has a first surface away from the negative electrode current collector and a second surface disposed opposite to the first surface. Denote the thickness of the negative electrode film layer as H, and denote the region within the thickness range from the second surface of the negative electrode film layer to 0.3H as the first region of the negative electrode film layer, and denote the region within the thickness range from the first surface of the negative electrode film layer to 0.3H as the second region of the negative electrode film layer. The first region contains a first active material, the second region contains a second active material. The first active material includes a first carbon-based material and a first silicon-based material. The first carbon-based material includes primary particles, and the first silicon-based material includes secondary particles formed by aggregation of primary particles.
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Citation Information

Patent Citations

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