US 12,249,737 B2
Lithium battery cell and manufacturing method thereof
Cheng-Huang Chen, Taoyuan (TW); Yi-Hsiang Chan, Taoyuan (TW); Shu-Lin Chen, Taoyuan (TW); and Wei-En Hsu, Taoyuan (TW)
Assigned to DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed by DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed on Aug. 25, 2021, as Appl. No. 17/445,950.
Claims priority of application No. 110203703 (TW), filed on Apr. 7, 2021.
Prior Publication US 2022/0328939 A1, Oct. 13, 2022
Int. Cl. H01M 50/536 (2021.01); H01M 10/0525 (2010.01); H01M 10/0583 (2010.01); H01M 50/534 (2021.01); H01M 50/566 (2021.01)
CPC H01M 50/536 (2021.01) [H01M 10/0525 (2013.01); H01M 10/0583 (2013.01); H01M 50/534 (2021.01); H01M 50/566 (2021.01)] 11 Claims
OG exemplary drawing
 
1. A lithium battery cell, comprising:
an upper cover module having a first electrode terminal;
a first battery electrode group having a first tab and disposed vertically;
a second battery electrode group having a second tab and disposed vertically; and
a plurality of first electrode connection straps,
wherein the first electrode connection straps are stacked together to form a first end, a second end and a middle part and the first electrode connection straps have a same width and length, wherein the first end of the first electrode connection straps is welded to the first tab, the second end of the first electrode connection straps is welded to the second tab, the middle part of the first electrode connection straps is located between the first end and the second end, and the middle part is connected to the first electrode terminal, wherein the first electrode connection straps have an even number of first bending parts from the middle part to the first end, the first electrode connection straps have an even number of second bending parts from the middle part to the second end, and the first bending parts and the second bending parts are symmetrical to each other, wherein the first bending parts comprise a first U-shaped bending part and a second U-shaped bending part, and the first U-shaped bending part is horizontally arranged opposite to the second U-shaped bending part, wherein an opening of the first U-shaped bending part is horizontally arranged opposite to an opening of the second U-shaped bending part, wherein the first U-shaped bending part is disposed on both sides of the first tab, and the second U-shaped bending part is connected to the first U-shaped bending part.