Large-capacity cylindrical and square winding battery pole piece and winding battery

The utility model relates to the technical field of batteries, in particular to a high-capacity cylindrical and square winding battery pole piece and a winding battery. The positive and negative pole pieces of the winding battery comprise tabs and a current collector, a pole piece active material co...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LI ANJIA, WANG ANHUA
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The utility model relates to the technical field of batteries, in particular to a high-capacity cylindrical and square winding battery pole piece and a winding battery. The positive and negative pole pieces of the winding battery comprise tabs and a current collector, a pole piece active material coating area is arranged on the current collector; the tab is connected with the current collector; and the winding battery pole piece is provided with a plurality of virtual connecting bands. The winding battery pole piece provided by the utility model is provided with the virtual connecting band, and the virtual connecting band penetrates through the current collector and the pole piece active material coating area, so that the problems of wrinkling, pulverization and lithium or sodium separation of the positive pole piece and the negative pole piece caused by non-uniform stress distribution in the production and charge-discharge cycle use process of a winding core can be reduced; the influence on the electrical pr