US 12,482,905 B2
Layer-built tab, electrode plate, battery core, and battery using same
Jiaxi Zhang, Ningde (CN); and Shasha Wang, Ningde (CN)
Assigned to Ningde Amperex Technology Limited, Ningde (CN)
Filed by Ningde Amperex Technology Limited, Ningde (CN)
Filed on Jan. 21, 2022, as Appl. No. 17/581,063.
Application 17/581,063 is a continuation of application No. PCT/CN2020/078847, filed on Mar. 11, 2020.
Claims priority of application No. 201921155055.4 (CN), filed on Jul. 22, 2019.
Prior Publication US 2022/0149492 A1, May 12, 2022
Int. Cl. H01M 50/534 (2021.01); H01M 50/533 (2021.01); H01M 50/538 (2021.01)
CPC H01M 50/534 (2021.01) [H01M 50/533 (2021.01); H01M 50/538 (2021.01)] 14 Claims
OG exemplary drawing
 
1. A layer-built tab, comprising:
a plurality of metal pieces; and
adhesives arranged between adjacent metal pieces;
wherein
the plurality of metal pieces are stacked, and adhered by the adhesives;
a through hole is provided on each alternate metal piece in the plurality of metal pieces; and
the through holes are filled with the adhesives, and the adhesive between and through the alternate metal pieces are connected to form a single body;
wherein the plurality of metal pieces comprises first metal pieces and second metal pieces,
the first metal pieces and the second metal pieces have same polarity;
the first metal pieces are stacked in a stacking direction;
each second metal piece is partially stacked with the first metal pieces in the stacking direction;
the second metal pieces and the first metal pieces are spaced apart from each other;
wherein a minimum distance between the first metal pieces and the second metal pieces in the stacking direction is greater than a minimum distance between adjacent first metal pieces in the stacking direction.