Vehicle air conditioning control system with integrated power battery cooling function and control method thereof

Abstract

The invention discloses a vehicle air-conditioner control system integrated with a power battery cooling function and a control method of the vehicle air-conditioner control system integrated with the power battery cooling function. The vehicle air-conditioner control system comprises a temperature sensor, an air-conditioner controller, a power battery controller, a power battery evaporator and a vacuum pump communicated with a battery shell through a first one-way valve, the first one-way valve is communicated to the vacuum pump through the battery shell, and an air inlet is formed in the battery shell in the air-conditioner air outlet direction. The battery temperature is detected through the temperature sensor, and the detected battery temperature is compared with a preset battery temperature through the power battery controller. If the detected battery temperature is higher than the preset battery temperature, a battery temperature dropping demand command is transmitted to the air-conditioner controller, and the vacuum pump is controlled to be started; the air-conditioner controller receives the battery temperature dropping demand command and controls the power battery evaporator and an air-conditioner compressor to be started. In this way, the vehicle air-conditioner control system has the power battery cooling function, so that the cooling efficiency of a power battery and the cooling uniformity between battery cells are improved, and it is accordingly guaranteed that the power battery can efficiently and continuously work.

Description

technical field [0001] The invention relates to the technical field of air-conditioning cooling, in particular to a vehicle air-conditioning control system with an integrated power battery cooling function. The present invention also relates to a control method of the vehicle air-conditioning control system based on the above-mentioned integrated power battery cooling function. Background technique [0002] With the continuous improvement of environmental protection awareness, new energy technologies based on electric power are actively applied to automobile production. Power batteries are the main power equipment of electric vehicles. The space is limited, and the heat cannot be eliminated due to space constraints. It can only be accumulated in the battery pack of the power battery, causing uneven temperature everywhere and affecting the charge and discharge cycle efficiency of the power battery. In severe cases, it will also affect the power and energy performance of the p...

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Problems solved by technology

[0004] However, due to the heat generated by the chemical reaction during the discharge and charging process of the power battery, the heat generated is relatively large, and the heat temperature is high, while the intensity of the natural wind is low and the heat exchange efficiency is low, which will cause the monomer The temperature of the battery drops slowly, and the cooling efficiency cannot meet the requirements of use; at the same time, because the single batteries are arranged in groups, the gap between adjacent single batteries is small, and due to the arrangement structure, the wind resistance of each single battery is uneven , when the natural wind passes through, the adequacy of the heat exchange of each single battery cannot be guaranteed, and the temperature drop between the single batteries is uneven

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