US 12,347,824 B2
Separator and energy storage device
Jianjian Yi, Fujian (CN); Xinzhi Zhang, Fujian (CN); Zengbin Wei, Fujian (CN); and Xinghua Tao, Fujian (CN)
Assigned to Ningde Amperex Technology Limited, Ningde (CN)
Filed by Ningde Amperex Technology Limited, Fujian (CN)
Filed on Apr. 19, 2023, as Appl. No. 18/303,042.
Application 18/303,042 is a continuation of application No. 17/178,843, filed on Feb. 18, 2021.
Application 17/178,843 is a continuation of application No. 16/013,887, filed on Jun. 20, 2018, granted, now 10,964,987, issued on Mar. 30, 2021.
Claims priority of application No. 201810321779.5 (CN), filed on Apr. 11, 2018.
Prior Publication US 2023/0261250 A1, Aug. 17, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 50/403 (2021.01); H01M 10/0525 (2010.01); H01M 50/417 (2021.01); H01M 50/426 (2021.01); H01M 50/431 (2021.01); H01M 50/434 (2021.01); H01M 50/443 (2021.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); H01M 50/491 (2021.01)
CPC H01M 10/0525 (2013.01) [H01M 50/403 (2021.01); H01M 50/417 (2021.01); H01M 50/426 (2021.01); H01M 50/431 (2021.01); H01M 50/434 (2021.01); H01M 50/443 (2021.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); H01M 50/491 (2021.01)] 21 Claims
OG exemplary drawing
 
1. An energy storage device, comprising a separator, the separator comprising:
a porous substrate; and
a porous layer arranged on a surface of the porous substrate, wherein the porous layer comprises inorganic particles and a binder, and a ratio of Dv90 of the inorganic particles to the thickness of the porous layer is in a range from 0.4 to 1.5.