Jacket type mixed electric car battery device with liquid cooling system

Abstract

The present invention discloses a jacket type hybrid electric vehicle battery device with a liquid cooling system, comprising a battery module box top cover, a battery module, a battery module box, a casing type evaporator, a water pump, a temperature control triple valve, an electric heating device, a liquid separating head and a cooling pipeline. The battery device adopts a liquid cooling jacket type structure, i.e. a cooling shell is arranged outside a battery matrix; the device can realize the effective temperature reduction of the whole battery module of an electric vehicle in the severe thermal environment, and can also satisfy the even temperature distribution among battery bodies, so as to achieve the optimal operation condition of the vehicle, which prolongs the life-span of the batteries and improves the power performance of the hybrid electric vehicle at the same time. The casing type evaporator is selected as a heat exchanger, and as the evaporator is characterized in light weight, compact structure, high heat exchange efficiency, etc., the battery device is simpler and more portable. The electric heating device is arranged according to the work of the hybrid electric vehicle battery in the cold environment.

Description

technical field [0001] The invention relates to a hybrid electric vehicle battery, in particular to a jacket type hybrid electric vehicle battery device with a liquid cooling system. Background technique [0002] The cooling methods of hybrid electric vehicle battery stacks can be generally divided into three methods according to the heat transfer medium: gas cooling (air), liquid cooling (oil cooling) and phase change material cooling. At present, the simplest air cooling method is generally used for hybrid electric vehicle batteries on the market, and other cooling methods are rarely used. However, if the hybrid electric vehicle battery is working in a harsh thermal environment, it is difficult to cool the battery to the optimal operating temperature only by simple air cooling, and it is also impossible to ensure the consistency of the temperature between the batteries, so that the performance of the battery is difficult. Therefore, in such an environment, in order to obt...

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Problems solved by technology

However, if the hybrid electric vehicle battery is working in a harsh thermal environment, it is difficult to cool the battery to the optimal operating temperature only by simple air cooling, and it is also impossible to ensure the consistency of the temperature between the batteries, so that the performance of the battery is difficult. Therefore, in such an environment, in order to obtain a better cooling effect for electric vehicle batteries, it is necessary to consider the use of efficient liquid cooling methods to ensure the optimization of battery performance , because the general liquid cooling system has high heat transfer efficiency and small footprint, but the system is relatively complicated and the cost is high, so a high-efficiency, compact and relatively low-cost jacketed hybrid with liquid cooling system is developed Electric vehicle battery device is very necessary

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