Distributed asymmetrical cooling device and method for electric automobile power battery

Abstract

The invention discloses a distributed asymmetrical cooling device and method for an electric automobile power battery. The distributed asymmetrical cooling device comprises a vehicle-mounted cooling device body and a cooling charging pile; the vehicle-mounted cooling device body comprises a module heat exchanger tightly making contact with a battery set, a first cooling liquid conveying pipeline connected with the module heat exchanger and enabling the module heat exchanger to form a loop, a first three-way valve, a first cooling liquid inflow and outflow connector and a first charging connector connected with the battery set, and a first water pump is arranged on the first cooling liquid conveying pipeline; and the cooling charging pile comprises a charging mechanism and a cooling mechanism, and a second charging connector and a second cooling liquid inflow and outflow connector are formed in the cooling charging pile. According to the distributed asymmetrical cooling device and method for the electric automobile power battery, a vehicle-mounted refrigerating device body is canceled, transferred to the ground and cools the battery set only in the charging process; and through the structure, the automobile occupied space and the automobile weight are reduced, vehicle-mounted electric energy cannot be additionally consumed, and thus the automobile traveling distance is increased.

Description

technical field [0001] The invention relates to a cooling device for an electric vehicle, in particular to a distributed asymmetric cooling device and a cooling method for a power battery of an electric vehicle. Background technique [0002] When the electric vehicle is charging or driving, the temperature of the battery pack in the electric vehicle will rise, so it is necessary to use a cooling device to cool down the battery pack. The current battery pack cooling methods include air cooling and liquid cooling, and air cooling has disadvantages Limited cooling capacity and high environmental impact cannot meet the requirements of high-quality thermal management. The advantage of liquid cooling is that it has a strong cooling capacity and is not affected by the environment, but it needs to install a refrigeration device on the vehicle. The disadvantages are that the structure is complex, the cost is high, the space and weight of the vehicle are occupied, and the cooling need...

AI Technical Summary

Problems solved by technology

[0002] When the electric vehicle is charging or driving, the temperature of the battery pack in the electric vehicle will rise, so it is necessary to use a cooling device to cool down the battery pack. The current battery pack cooling methods include air cooling and liquid cooling, and air cooling has disadvantages Limited cooling capacity and high environmental impact cannot meet high-quality thermal management requirements

The advantage of liquid cooling is that it has a strong cooling capacity and is not affected by the environment, but it needs to install a refrigeration device on the vehicle. The disadvantages are that the structure is complex, the cost is high, the space and weight of the vehicle are occupied, and the cooling needs to consume vehicle power, which shortens the mileage of the vehicle;

[0003] For example, Chinese patent 201010266526.6 discloses a cooling system for fuel cell vehicles, including a stacked radiator; an electric drive system radiator, which is arranged in series on the side of the stacked radiator; an air conditioner condenser, the an air conditioner condenser is arranged in front of the stacked radiator so as to cover the stacked radiator but not cover the electric drivetrain radiator; and a plurality of cooling fans provided in the series arranged Behind the stacked radiator and the radiator of the electric drive system, this design installs the refrigeration device in the car, which has a complex structure, high cost, occupies the space quality of the vehicle, and consumes electric energy of the vehicle during cooling, shortening the mileage of the vehicle

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