Battery module and battery pack

Abstract

The invention belongs to the technical field of batteries, and discloses a battery module and a battery pack. The battery pack comprises the battery module. The battery module comprises a module shell, a battery cell assembly, a detection unit and a discharging unit, wherein a containing cavity is formed in the module shell; a discharging channel is formed in the side wall of the module shell in a hollowed-out mode; the discharging channel communicates with the containing cavity and the exterior of the module shell, and a purification unit is arranged in the discharging channel and used for purifying gas penetrating through the discharging channel; the battery cell assembly is mounted in the containing cavity; the detection unit is arranged in the module shell and used for detecting an air pressure value and temperature in the module shell; and the discharging unit is arranged in the module shell and used for guiding gas in the containing cavity into the discharging channel. According to the invention, the discharging unit can guide heat and gas into the discharging channel in time and finally discharge the heat and the gas out of the module shell, and the gas can be purified and filtered by the purification unit when penetrating through the discharging channel, so environment pollution is avoided.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery module and a battery pack. Background technique [0002] Electric vehicles are recognized by more and more consumers due to the use of electricity as the driving energy. On the one hand, they can reduce pollution emissions and meet the requirements of environmental protection. The cost of use is getting lower and lower. [0003] As the energy storage center in electric vehicles, the power battery needs to increase its energy density when the volume and quantity of the power battery are difficult to greatly increase. Improve, when thermal runaway occurs in the power battery, high-energy gas will be released. These high-energy gases carry liquid or solid substances such as electrolyte, electrode materials, current collectors, etc., which will cause a sudden increase in the internal pressure of the power system, and may quickly cause the power system Connected with the...

AI Technical Summary

Problems solved by technology

[0003] As the energy storage center of electric vehicles, the power battery needs to increase its energy density when the volume and quantity of the power battery are difficult to greatly increase. Improve, when thermal runaway occurs in the power battery, high-energy gas will be released. These high-energy gases carry liquid or solid substances such as electrolyte, electrode materials, current collectors, etc., which will cause a sudden increase in the internal pressure of the power system, and may quickly cause the power system Developed and connected with the outside world, when the high-energy gas encounters the outside air, under the action of ignition of high-temperature particles, the high-energy gas burns violently, and serious safety accidents occur

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