Thermal management system and thermal management method of vehicle battery pack

Abstract

The invention discloses a thermal management system and a thermal management method of a vehicle battery pack, and relates to the technical field of vehicles. The thermal management system comprises an ambient temperature sensor, a battery temperature sensor, an electronic control unit and a water circulation channel, wherein the water circulation channel sequentially passes through an electronicwater pump, a battery pack, a heat dissipator and an air conditioner cooling device, and is used for conducting the heat generated by the battery pack, and when the temperature detected by the ambienttemperature sensor does not exceed a first threshold, and the temperature detected by the battery temperature sensor reaches a second threshold and does not exceed a third threshold, the heat dissipator and the air conditioner cooling device cool the battery pack. The invention further provides a corresponding thermal management method. According to the present invention, with the system and themethod, the continuous driving mileage of the vehicle battery pack can be lengthened, and the fuel consumption of the hybrid vehicle can be reduced so as to substantially improve the effects of energysaving and emission reducing.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a thermal management system and a thermal management method of a vehicle battery pack. Background technique [0002] At this stage, the battery pack is the main power source for the operation of pure electric vehicles and hybrid vehicles, and its normal work needs to meet strict requirements, one of which is the operating temperature of the battery pack, which needs to be within a certain temperature range to work at its best. [0003] At present, in order to stabilize the working temperature of the battery pack within a certain range, the air conditioning system is usually used alone to cool the battery pack, or the radiator is used to cool the battery pack when the battery pack is in a low temperature state, and the air conditioning system is used alone when the battery pack is in a high temperature state. Cool down. [0004] Using the above method to cool down the battery p...

AI Technical Summary

Problems solved by technology

[0004] Using the above method to cool down the battery pack will inevitably cause the air conditioning system to consume more power, and the power is provided by the vehicle battery pack. Therefore, the consequence is that the cruising range of the vehicle battery pack will be shortened. For hybrid vehicles In other words, the shortening of the cruising range of the battery pack will directly lead to the increase of the fuel consumption of the vehicle, which is completely contrary to the concept of energy saving and emission reduction advocated by the state.

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