BATTERY PACK AND APPARATUS

• Main Authors: TANG, Yu, YOU, Kaijie, WANG, Yongguang, CHEN, Xingdi, CHEN, Yanbo
• Format: Patent
• Language: English; French; German
• Published: 08.06.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A battery pack and an apparatus, relating to the field of energy storage devices. The battery pack includes: a first box body (1), where the first box body (1) includes a frame (12) and a cross beam (13), the cross beam (13) is disposed within the frame (12), and the cross beam (13) has a hollow structure and is provided with an exhaust vent (132a); a baffle plate (15), connected to the cross beam (13) and sealing the exhaust vent (132a); and a battery cell (5), accommodated in the first box body (1) and including an explosion-proof valve (51), where the explosion-proof valve (51) faces towards the baffle plate (15). The baffle plate (15) is configured to exit a state of sealing the exhaust vent (132a) when the explosion-proof valve (51) of the battery cell (5) bursts. In the battery pack and the apparatus, when thermal runaway occurs in one battery cell (5), an explosion-proof valve (51) of that battery cell (5) bursts, to make the baffle plate (15) exit the state of sealing the exhaust vent (132a). On the one hand, air pressure released by the battery cell (5) can be discharged into the cross beam (13), thereby reducing internal air pressure of an accommodating area; on the other hand, heat released by the battery cell (5) is not directly discharged towards other battery cells (5) to avoid thermal runaway of other adjacent battery cells (5), thereby improving safety performance of the battery pack.