Power battery cooling system, control method and vehicle

Abstract

The invention provides a power battery cooling system, a control method and a vehicle. The system comprises a battery heat dissipation system and an air conditioning system, wherein the battery heat dissipation system includes a battery system, a coolant cooler, a water pump and a battery radiator which are connected in turn by a coolant pipeline, the coolant cooler is provided with a coolant accommodating layer and a refrigerant accommodating layer, the coolant accommodating layer is connected with the coolant pipeline, and the battery heat dissipation system carries out water cooling on a battery system; and an air outlet of the air conditioning system is selectively connected with the battery system so as to carry out air cooling on the battery system when being connected with the battery system, a refrigerant pipeline of the air conditioning system is selectively connected with the refrigerant accommodating layer so as to carry out cooling on a refrigerant in the refrigerant accommodating layer when being connected with the refrigerant accommodating layer. The power battery cooling system provided by the invention can effectively reduce the temperature of a power battery and has the advantage of low energy consumption.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a cooling system for a power battery, a control method and a vehicle. Background technique [0002] In related technologies, when controlling the temperature of the power battery of an electric vehicle, the heat dissipation of the battery is more and more intervened by the air conditioning system to ensure the normal working temperature of the battery, the service life of the battery and the battery life of the whole vehicle. [0003] The related means of cooling the battery system with the help of the air conditioning system have the following disadvantages: 1. The air conditioning system dissipates heat for the battery without zone control, the control accuracy of the single temperature zone is not high, the efficiency is reduced, and the power consumption is relatively large; 2. New energy vehicles use electric compressors, which continuously start and stop the refrigerati...

AI Technical Summary

Problems solved by technology

[0003] The related means of cooling the battery system with the help of the air conditioning system have the following disadvantages: 1. The air conditioning system dissipates heat for the battery without zone control, the control accuracy of the single temperature zone is not high, the efficiency is reduced, and the power consumption is relatively large; 2. New energy vehicles use electric compressors, which continuously start and stop the refrigeration compressor assembly for a long time, which consumes a lot of energy for the whole vehicle, which is not conducive to the long-term battery life of new energy vehicles; 3. Some battery cooling systems are combined with other cooling systems (transmission oil cooler, water tank of hybrid electric vehicles), when shared, conflicts are likely to occur, resulting in poor heat dissipation, which can easily lead to excessive battery temperature and battery loss

Images