Blade electric vehicle battery constant temperature and air conditioner system and control method thereof

Abstract

The invention discloses a blade electric vehicle battery constant temperature and air conditioner system and a control method. The system comprises a four-way valve, a vehicle outer heat exchanger, a first both-way expansion valve, a vehicle inner heat exchanger, a gas-liquid separator, a water tank, a battery box, a refrigerating coil, a water pump and a temperature adjusting coil. The water pump is connected to a water outlet of the water tank and the temperature adjusting coil. The other end of the temperature adjusting coil is connected to a water returning port of the water tank. The refrigerating coil is arranged in the water tank. An exhaust port of the compressor communicates with an air inlet of the four-way valve, and the four-way valve is used for connecting an air inlet and an air suction port of the compressor, the vehicle outer heat exchanger and the vehicle inner heat exchanger. The refrigerating coil is also connected to a refrigerant circulating system, the running route of refrigerant is regulated through four control valves, and accordingly pure battery temperature adjusting, pure air conditioner running and synchronous battery and air conditioner running are achieved. According to the battery constant temperature and air conditioner system, the temperature of a batter pack in a battery case can be regulated, the battery can run in the ideal temperature environment, and the requirements for blade electric vehicle refrigerating and heating are met.

Description

technical field [0001] The invention relates to a battery constant temperature and air-conditioning system of a pure electric vehicle, and at the same time, a control method of the battery constant temperature and air-conditioning system of the pure electric vehicle is also designed. Background technique [0002] In recent years, pure electric vehicles have become more and more popular. The driving of the vehicle is completed by the main drive motor, and the main drive motor is powered by the battery pack. As an electric air-conditioning system applied to pure electric vehicles, it needs to consume the battery pack in actual use. Therefore, the electric air conditioning system of a pure electric vehicle will affect the cruising range of the vehicle. So how to make the electric air-conditioning system of pure electric vehicles more energy-saving, and the energy utilization rate and conversion rate are higher is the difficult problem on the electric air-conditioning system of ...

AI Technical Summary

Problems solved by technology

[0003] In addition, the battery pack of pure electric vehicles is the core component of electric vehicles, but due to its innate chemical characteristics, it cannot be directly adapted to the temperature environment of daily use.

The performance of the battery pack is obviously affected by environmental factors, especially under low temperature conditions, the performance of the battery drops significantly. Although the performance can be improved under high temperature conditions, if the temperature exceeds a certain level, it will cause the expansion and deformation of the battery and cause safety hazards.

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