Immersed battery heat dissipation box

Abstract

The invention provides an immersed battery heat dissipation box (10). The heat dissipation box includes a box body (26); the box body (26) is provided with a liquid inlet (12) and a liquid outlet (14); the internal of the box body (26) is provided with batteries (16) and accommodates a liquid coolant; and the batteries (16) are immersed in the liquid coolant. The purpose of providing the heat dissipation box which can directly transmit the heat of the batteries to the liquid coolant can be achieved, so that heat transfer efficiency can be higher, and the whole temperature of the batteries canbe more uniform.

Description

technical field [0001] The invention relates to the field of batteries, and more specifically, to a submerged battery cooling box. Background technique [0002] With the increasingly serious environmental problems, the sales of energy vehicles have increased year after year. The power battery is the heart of electric vehicles and directly affects the performance of electric vehicles. Moreover, the power battery has a large working current and generates a lot of heat. At the same time, the battery pack is in a relatively closed environment, and the heat cannot be well exported, which will lead to high or uneven temperature of the battery and affect the service life of the car. At present, commonly used heat sinks are air-cooled heat sinks and liquid-cooled heat sinks. Air-cooled heat dissipation devices are often divided into natural cooling devices and forced cooling devices. [0003] Existing air cooling and thermal management technologies have high requirements on ambie...

AI Technical Summary

Problems solved by technology

[0003] The existing air-cooled thermal management technology has high requirements on the ambient temperature, and the temperature of the inlet air is difficult to control, which makes it difficult to control the temperature of the battery

Due to the small heat transfer coefficient of air, the efficiency of heat dissipation and cooling is low, and the uneven flow of air will lead to uneven temperature distribution in the battery pack, which will affect the temperature consistency of the power battery

Existing liquid-cooled thermal management technologies generally use liquid-cooled pipelines of various structures interspersed between batteries, or add liquid-cooled plates on the surface of the battery and between the batteries. However, the battery cannot directly transfer heat to the liquid during charging and discharging. , but through the tube wall, and then through the tube wall to the cooling medium, this transfer will reduce the heat transfer efficiency to a certain extent

Images