Box for new energy automobile battery pack

Abstract

The invention provides a box for a new energy automobile battery pack. The box comprises a box body, a filter, a first air inlet pipeline, a second air inlet pipeline, an air outlet pipeline and a heat dissipation box, wherein the box body is formed by oppositely buckling a first sub-box body and a second sub-box body, a heat dissipation plate is arranged in the heat dissipation box, a plurality of heat dissipation devices are arranged on the heat dissipation plate, and the filter comprises a filter box body and a first filtering plate, a second filtering plate, a third filtering plate and a fourth filtering plate which are arranged in the filter box body. The box has a relatively good heat exchange effect; air is filtered through airflow distribution of an air supply system by the filter, the airflow uniformity of an operation region is ensured, the processing time is reduced to a great extent, and the working efficiency is substantially improved; and filtering employs layered filtering, the control on airflow can be systematically improved, and impurity in airflow is more effectively filtered.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a box body for a battery pack of a new energy vehicle. Background technique [0002] One of the biggest problems with vehicles running on fossil fuels such as gasoline and diesel is air pollution. As a solution to the above-mentioned problems, a technique of using a rechargeable secondary battery as a vehicle power source has attracted attention. Therefore, battery vehicles that can run only on batteries, and hybrid vehicles that use batteries and existing engines have been developed, and some of them have been commercialized. Secondary batteries are used as power sources for electric vehicles, hybrid battery vehicles, etc., and nickel metal hydride batteries are mainly used, and lithium-ion batteries are also being tried recently. [0003] Since high power and high capacity are required for power sources such as electric vehicles and hybrid electric vehicles, medium-to-large ...

AI Technical Summary

Problems solved by technology

However, large and medium-sized battery components will emit a lot of heat when they are working, and due to the dense arrangement, the battery is prone to thermal runaway and reduces battery life

Evidence shows that the normal operating temperature of the battery is 20-40°C, and the optimal operating temperature is 25°C. When the temperature rises by 5°C, the service life of the battery will be reduced by 10%.

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