Battery monomer, battery pack and power utilization device

Abstract

The invention discloses a battery monomer, a battery pack and a power utilization device. The battery monomer comprises a shell, an electrode assembly, a top cover, an anti-explosion valve and a first filter screen assembly, the first filter screen assembly is arranged on the side, away from the electrode assembly, of the anti-explosion valve so as to prevent particulate matter from entering the shell. The first filter screen assembly comprises a first filter screen, a second filter screen and a connecting piece, the first filter screen and the second filter screen are arranged in a spaced mode in the first direction, and the first connecting piece is arranged between the first filter screen and the second filter screen in the first direction and matched with the first filter screen to define a first hollow structure. The first filter screen assembly can shield high-temperature and high-pressure emissions to realize double filtration, so that the high-temperature and high-pressure emissions are directly accumulated on the first filter screen assembly to protect an explosion-proof valve of the non-thermal-runaway battery monomer, and the high-temperature and high-pressure emissions are prevented from entering the non-thermal-runaway battery monomer to prevent the explosion-proof valve of the non-thermal-runaway battery monomer from being damaged. And heat diffusion is effectively inhibited, so that the safety performance of the battery pack is improved.