US 12,170,386 B2
Battery pack and combination of a power tool and the battery pack
Zhijun Dong, Nanjing (CN); Jianan Liu, Nanjing (CN); and Zhongquan Xu, Nanjing (CN)
Assigned to Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed by Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed on Dec. 15, 2021, as Appl. No. 17/551,597.
Application 17/551,597 is a continuation of application No. PCT/CN2019/111827, filed on Oct. 18, 2019.
Prior Publication US 2022/0109217 A1, Apr. 7, 2022
Int. Cl. H01M 50/54 (2021.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01); H01M 50/209 (2021.01)
CPC H01M 50/54 (2021.01) [H01M 10/443 (2013.01); H01M 10/48 (2013.01); H01M 50/209 (2021.01); H01M 2220/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A battery pack configured to supply electricity to a power tool and comprising:
a housing;
a cell assembly disposed in the housing; and
a cell support member at least configured to support the cell assembly;
wherein the cell assembly comprises a plurality of cells which are sheet-shaped and tabs disposed at at least one end of the cell assembly and protruding from the plurality of cells, the plurality of cells are stacked, each of the plurality of cells comprises an encapsulation member configured to encapsulate the each of the plurality of cells, the cell support member is disposed at two ends of the cell assembly, at least a part of the cell support member encapsulates the tabs, the cell support member is made of an elastic material with a compression ratio higher than or equal to 50%, the cell assembly is configured to be capable of discharging at a rate higher than or equal to 5 C at an ambient temperature T, −22° C.≤T≤−15° C., 5 C represents a current intensity when the cell assembly completely discharges for ⅕ hours, the cell assembly has a gravimetric energy density higher than or equal to 300 wh/kg.