Efficient electric automobile cooling system

Abstract

The invention discloses an efficient electric automobile cooling system which comprises a cooling control device, a water cooling device and a compression cooling device. The cooling control device comprises a controller and multiple temperature sensors. The water cooling device comprises a cooling water radiator, a cooling water cooling fan and two or more water cooling branches. The water cooling branches are composed of water pumps and water cooling radiators, wherein the water pumps and the water cooling radiators are sequentially connected in series. The compression cooling device comprises a compressor, a condenser and two or more evaporation branches. The evaporation branches are composed of proportional electromagnetic valves, expansion valves and evaporation radiators, wherein the proportional electromagnetic valves, the expansion valves and the evaporation radiators are sequentially connected in series. The water cooling radiators and the evaporation radiators are connected with large-power heating devices of an electric automobile. The temperature sensors are used for detecting the temperatures of the large-power heating devices of the electric automobile. The temperature sensors, the water pumps, the compressor and the proportional electromagnetic valves are connected to the controller. The efficient electric automobile cooling system is good in cooling performance and low in power consumption.

Description

Technical field [0001] The invention relates to the field of electric vehicles, in particular to an efficient cooling system for electric vehicles. Background technique [0002] Electric vehicles use motors as direct power sources. During driving, the drive motors, controllers, and voltage conversion modules (ie DCDC modules) of electric vehicles will generate a lot of heat. In order to ensure the performance of electric vehicles, systems such as motors are required. Cool down. [0003] At present, the driving motors and their controllers, DCDC modules of electric vehicles are mainly cooled by water circulation. Existing water cooling systems generally use a radiator and a water pump to connect motors and motor controllers in series or in parallel for cooling. [0004] No matter which piping arrangement is adopted, the system flow rate remains the same, and the heat dissipation capacity of the system is constant and cannot be adjusted according to the temperature of the components....

AI Technical Summary

Problems solved by technology

[0004] No matter which pipeline arrangement is adopted, the system flow rate remains the same, and the heat dissipation capacity of the system is constant, which cannot be adjusted according to the temperature of the components.

When the temperature of the motor etc. rises, its operating efficiency is reduced; when the temperature of the motor etc. decreases, the water pump always runs at high power, wasting too much electricity

[0005] Moreover, the cooling efficiency of the existing electric vehicle cooling system is limited, and it is impossible to cool down the high-power heating device in a timely and effective manner during high temperature or extreme driving in summer, which affects the performance and service life of the electric vehicle

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