SECONDARY BATTERY AND ELECTRIC DEVICE
The embodiment of the invention provides a secondary battery and a power utilization device, the secondary battery comprises an electrode assembly, the electrode assembly comprises a main body part and a tab extending from the main body part, the main body part comprises a negative pole piece, and t...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The embodiment of the invention provides a secondary battery and a power utilization device, the secondary battery comprises an electrode assembly, the electrode assembly comprises a main body part and a tab extending from the main body part, the main body part comprises a negative pole piece, and the negative pole piece comprises a positive pole piece and a negative pole piece; the negative electrode piece comprises a negative electrode current collector and a negative electrode film layer arranged on at least one surface of the negative electrode current collector, the negative electrode film layer comprises a first area and a second area arranged on at least one side of the first area in the extending direction of the tab, the first area comprises a first negative electrode active material, and the second area comprises a second negative electrode active material. The first area comprises a first negative electrode active material, the second area comprises a second negative electrode active material, the |
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