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...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: JIN HAIZU, DU XIANGLONG, KIM EUI-KWANG, NIU SHAOJUN, XU HU
Format: Patent
Sprache:chi ; eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
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