US 12,278,387 B2
Battery pack and apparatus
Yongguang Wang, Ningde (CN); Yu Tang, Ningde (CN); Kaijie You, Ningde (CN); Xingdi Chen, Ningde (CN); and Yanbo Chen, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Dec. 29, 2021, as Appl. No. 17/564,551.
Application 17/564,551 is a continuation of application No. PCT/CN2020/118765, filed on Sep. 29, 2020.
Claims priority of application No. 201911085794.5 (CN), filed on Nov. 8, 2019.
Prior Publication US 2022/0123423 A1, Apr. 21, 2022
Int. Cl. H01M 50/308 (2021.01); H01M 50/204 (2021.01); H01M 50/249 (2021.01); H01M 50/262 (2021.01); H01M 50/317 (2021.01)
CPC H01M 50/308 (2021.01) [H01M 50/204 (2021.01); H01M 50/249 (2021.01); H01M 50/262 (2021.01); H01M 50/317 (2021.01); H01M 2220/20 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A battery pack, comprising:
a first box body, comprising a frame and a cross beam, wherein the cross beam is disposed within the frame, and the cross beam has a hollow structure and is provided with an exhaust vent;
a baffle plate, connected to the cross beam and sealing the exhaust vent; and
a battery cell, accommodated in the first box body and comprising an explosion-proof valve, wherein the explosion-proof valve faces towards the baffle plate; and
the baffle plate is configured to exit a state of sealing the exhaust vent when the explosion-proof valve of the battery cell bursts;
wherein a melting point of the baffle plate is lower than a melting point of the cross beam;
wherein a wall thickness of the baffle plate is less than a wall thickness of the cross beam;
wherein the cross beam comprises a top plate and two side plates, and the two side plates are connected to two ends of the top plate, respectively; and
the exhaust vent is provided in the side plate.