Power battery box device used for new energy automobile and control method thereof

Abstract

The invention discloses a power battery box device used for a new energy automobile and a control method thereof. The power battery box device comprises a battery box body and an electronic component arranged in the battery box body, wherein the battery box body is provided with a gas inlet used for being communicated with a high pressure gas source, and a gas outlet communicated with the outer side, and the gas inlet and the gas outlet are communicated through the space in the position of the electronic component; the power battery box device used for the new energy automobile also comprises a controller for controlling the working state of the high pressure gas source according to environmental parameters; in the battery box device, the electronic component is cooled or preheated by the existing high pressure gas source on the whole automobile, gas is directly contacted with the surface of the electronic component for heat exchange, secondary heat transfer is carried out without the need of a third part, and the heat exchange efficiency is improved; and the inhouse pressure of the high pressure gas source is utilized to drive the circulation of gas flows in the battery box by the device, so that the device has good gas flow circulation performance, and the heat exchange efficiency of the gas and the electronic component is further improved.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a power battery box device for a new energy vehicle and a control method thereof. Background technique [0002] At present, the power battery is the main energy storage component of the car, and it is also a key component of the new energy vehicle. The quality of the power battery determines the cost and performance of the electric car. [0003] Vehicle power batteries generate a lot of heat during charging and discharging, which may cause thermal runaway of the single cells inside the battery module, and cause a very serious imbalance between the cells or modules, resulting in the The performance mismatch between the bodies further leads to premature failure of the battery module. Therefore, it is necessary to take certain cooling measures to cool down the battery. [0004] In the prior art, the power battery air-cooling system is generally used to cool down the po...

AI Technical Summary

Problems solved by technology

[0008] First, only the ambient air is used to cool the sealed parts of the battery, and the cooling air cannot be directly introduced into the inside of the battery box to directly contact with various components (such as battery cells, electrical connection points, etc.) for cooling. heat, reducing the cooling efficiency

[0009] Second, the heating and cooling methods of existing power batteries need to add other equipment, such as fans, blowers and ventilation ducts

This increases the structural complexity of the system, occupies the space of the vehicle, and requires additional energy for driving, increasing the energy consumption of the vehicle system, which is not conducive to supporting the vehicle

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