US 12,255,290 B2
Electrode assembly, and lithium ion electric roll using the electrode assembly
Junliang Zhu, Dongguan (CN); Haibing Wang, Dongguan (CN); Tongming Dong, Dongguan (CN); Wenqiang Cheng, Dongguan (CN); Baohua Chen, Dongguan (CN); Shufeng Wu, Dongguan (CN); Wei Yang, Dongguan (CN); Zhihua Qin, Dongguan (CN); and Meina Lin, Dongguan (CN)
Assigned to DONGGUAN AMPEREX TECHNOLOGY LIMITED, Dongguan (CN)
Filed by DONGGUAN AMPEREX TECHNOLOGY LIMITED, Dongguan (CN)
Filed on Dec. 22, 2023, as Appl. No. 18/393,712.
Application 18/393,712 is a continuation of application No. 16/733,087, filed on Jan. 2, 2020.
Application 16/733,087 is a continuation of application No. 16/107,831, filed on Aug. 21, 2018, granted, now 10,840,557, issued on Nov. 17, 2020.
Application 16/107,831 is a continuation of application No. 15/087,096, filed on Mar. 31, 2016, granted, now 10,283,816, issued on May 7, 2019.
Claims priority of application No. 201510932557.3 (CN), filed on Dec. 14, 2015.
Prior Publication US 2024/0128518 A1, Apr. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/0587 (2010.01); H01M 10/052 (2010.01); H01M 10/0525 (2010.01); H01M 10/0583 (2010.01); H01M 10/0585 (2010.01); H01M 50/119 (2021.01); H01M 50/121 (2021.01); H01M 50/124 (2021.01)
CPC H01M 10/0587 (2013.01) [H01M 10/052 (2013.01); H01M 10/0525 (2013.01); H01M 10/0583 (2013.01); H01M 10/0585 (2013.01); H01M 50/119 (2021.01); H01M 50/121 (2021.01); H01M 50/124 (2021.01); H01M 2220/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrode assembly, comprising:
a first electrode unit having a first surface extending along a length direction and a width direction of the first electrode unit, a second surface opposite to the first surface, a third surface extending along the length direction and a thickness direction of the first electrode unit, a fourth surface opposite to the third surface, a top surface extending along the width direction and the thickness direction of the first electrode unit and a bottom surface opposite to the top surface;
the first electrode unit comprises a first electrode sheet, a second electrode sheet, and a separator, the separator is disposed between the first electrode sheet and the second electrode sheet;
the first electrode sheet comprises a first top edge and a first bottom edge along the length direction of the first electrode unit,
the second electrode sheet comprises a second top edge and a second bottom edge along the length direction of the first electrode unit;
a first anti-puncture cushion;
the first anti-puncture cushion is disposed on at least one of the third surface or the fourth surface along the width direction of the first electrode unit;
an edge of the first anti-puncture cushion exceeds beyond at least one of the second top edge or the second bottom edge of the second electrode sheet along the length direction of the first electrode unit.