US 12,334,524 B2
Safety mechanism for rechargeable battery pack with pouch cells
Matthias Lepiorz, Chemnitz (DE); Moses Ender, Buchs (CH); and Robert Stanger, Kaufbeuren (DE)
Assigned to Hilti Aktiengesellschaft, Schaan (LI)
Appl. No. 17/058,596
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Jun. 19, 2019, PCT No. PCT/EP2019/066114
§ 371(c)(1), (2) Date Nov. 24, 2020,
PCT Pub. No. WO2020/002062, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 18179766 (EP), filed on Jun. 26, 2018.
Prior Publication US 2021/0143517 A1, May 13, 2021
Int. Cl. H01M 10/617 (2014.01); B25F 5/00 (2006.01); H01M 10/48 (2006.01); H01M 10/6235 (2014.01); H01M 10/647 (2014.01); H01M 10/6555 (2014.01); H01M 50/202 (2021.01); H01M 50/211 (2021.01); H01M 50/242 (2021.01); H01M 50/244 (2021.01); H01M 50/247 (2021.01); H01M 50/583 (2021.01)
CPC H01M 10/617 (2015.04) [B25F 5/00 (2013.01); H01M 10/482 (2013.01); H01M 10/488 (2013.01); H01M 10/6235 (2015.04); H01M 10/647 (2015.04); H01M 10/6555 (2015.04); H01M 50/202 (2021.01); H01M 50/211 (2021.01); H01M 50/242 (2021.01); H01M 50/244 (2021.01); H01M 50/247 (2021.01); H01M 50/583 (2021.01); H01M 2200/103 (2013.01); H01M 2220/30 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A rechargeable battery pack comprising:
at least one pouch cell; and
at least one electrically conductive filament surrounding or delimiting the pouch cell at least in sections in such a way that expansion of the pouch cell causes severing of the filament; wherein the filament or a frame surrounding the pouch cell has at least one predetermined breaking point.