Battery pack heat dissipation device and battery system

Abstract

The invention provides a battery pack heat dissipation device which comprises a liquid cooling plate, a water circulation system and a box body for placing a battery pack. The liquid cooling plate isarranged at the bottom of the box body, one end of the water circulation system is connected with a water inlet of the liquid cooling plate, and the other end of the water circulation system is connected with a water outlet of the liquid cooling plate. The present invention further provides a battery system which is characterized by comprising the battery pack heat dissipation device, wherein thebattery pack is placed in the box body. According to the invention, the water circulation system is combined with the liquid cooling plate for heat dissipation, so that the efficiency of dissipating heat to the outside is greatly improved; the opening and closing of the water circulation system can be adjusted according to the use state, when the temperature of the battery pack is too high, the water circulation system is turned on, the higher the temperature is, the higher the working power of the water circulation system is, and the outward transportation and dissipation of heat are accelerated; and the liquid cooling plate is located on the box surface of the highest temperature position of the battery pack box body, so that the heat dissipation efficiency is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of battery heat dissipation, and more specifically, to a heat dissipation device for a battery pack and a battery system. Background technique [0002] As a new generation of transportation, new energy electric vehicles have incomparable advantages over traditional vehicles in terms of energy saving, emission reduction, and reduction of human dependence on traditional fossil energy. [0003] As the core component of new energy electric vehicles, batteries can be operated safely and reliably. On the one hand, when the electric vehicle is just starting and climbing a hill, or during charging and discharging, the battery will emit a lot of heat. If the heat cannot be dissipated quickly, it will cause thermal runaway of the battery, and in severe cases, the battery may be in danger of violent expansion and explosion. On the other hand, when electric vehicles are driving on rough roads, there will be fr...

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Problems solved by technology

[0005] The present invention overcomes the problem of using the air-cooled heat dissipation system with the phase-change material for heat dissipation described in the above-mentioned background technology. Because the temperature of the battery varies greatly, sometimes when the temperature of the battery is too high, the phase-change material combined with air-cooled heat dissipation is not timely, which will damage the battery. cause a certain impact, reduce the service life of the battery, and also have certain safety risks; provide a battery pack cooling device and a battery system

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