Electric vehicle cooling system and control method thereof

Abstract

The invention discloses an electric vehicle cooling system and a control method. The electric vehicle cooling system is composed of a motor cooling system and a battery cooling system, the motor cooling system is composed of a liquid storage tank, a radiator, an electric fan, a water temperature sensor, an electric water pump, a motor, a controller and a DCDC, the liquid storage tank, the radiator, the electric fan, the water temperature sensor, the motor, the controller and the DCDC are connected through a cooling pipeline, and the water temperature sensor is used for collecting temperature signals and transmitting the temperature signals to the controller; and the battery cooling system is composed of an electric water pump, a PTC, a heat exchanger, a CHILLER, an electric water pump, a battery, a water temperature sensor and a liquid storage tank which are connected through a cooling pipeline, and the water temperature sensor collects temperature signals and then transmits the temperature signals to the controller. The electric vehicle cooling system control method is divided into a motor cooling control method and a battery cooling control method. According to the electric vehicle cooling system and the control method, the cooling system can be simplified, and power consumption of parts of the cooling system is reduced; and the control method effectively avoids frequent opening and closing of parts of the cooling system and improves NVH of the system.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to an electric vehicle cooling system and a control method thereof. Background technique [0002] At present, electric vehicles are developing rapidly in the automotive industry. During the development of electric vehicles, how to simplify the cooling system to reduce costs and layout difficulties, and how to accurately control cooling system components to reduce power consumption are the current development of electric vehicle cooling systems. Key points and difficult points. [0003] The prior art discloses an electric vehicle cooling system and its control method. The electric vehicle cooling system mainly includes DC / DC cooling water jackets connected and communicated by cooling pipelines, air conditioner controller cooling water jackets, motor Controller cooling water jacket, driving motor cooling water jacket, radiator, electric water pump, a coolant tem...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a cooling system for an electric vehicle, and also provide a control method for the cooling system of an electric vehicle, so as to solve the problems of simplifying the cooling system and reducing the power consumption of the components of the cooling system, and can effectively avoid frequent cooling of components in the cooling system. Open and close to improve the NVH of the system; cooling / heating can be realized on demand, and the influence of ambient temperature is taken into account to achieve precise control; it has the advantages of energy consumption optimization and NVH improvement

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