A multi-mode temperature management system for electric vehicles

Abstract

The invention provides a multi-mode temperature management system of an electric automobile. The system comprises an air conditioning system, a power battery temperature management system and a driving motor temperature management system, wherein the air conditioning system can independently heat and refrigerate a compartment, the power battery temperature management system can independently heata power battery, and the driving motor temperature management system can independently cool a driving motor. The multi-mode temperature management system is advantaged in that communication and disconnection among the air conditioning system, the power battery temperature management system and the driving motor temperature management system are controlled through pipelines and valves, power battery temperature management modes are dynamically switched according to the real-time temperature of a power battery, the driving motor temperature management modes are dynamically switched according tothe real-time temperature of a driving motor, the temperature management modes are more flexible, energy utilization efficiency is higher, and temperature control is more stable.

Description

technical field [0001] The invention relates to the technical field of thermal management of electric vehicles, in particular to a multi-mode temperature management system for electric vehicles. Background technique [0002] The world today is facing severe environmental problems, countries around the world are actively encouraging the research and development of electric vehicles to get rid of the dependence on fossil energy. In recent years, with the introduction of inclusive subsidy policies, the production and sales of electric vehicles in my country have ushered in explosive growth. The temperature control system of electric vehicles is an integral part of the vehicle. It not only provides a comfortable driving environment for drivers and passengers, but also effectively ensures the normal and efficient operation of power batteries, drive motors and other systems. [0003] However, the existing electric vehicle temperature management has the following technical problem...

AI Technical Summary

Problems solved by technology

[0004] (1) The existing electric vehicle air-conditioning system only heats or cools the compartment, and does not combine with the temperature management of other components (such as drive motors and power batteries);

[0005] (2) The existing electric vehicle temperature management system mainly manages the temperature of the power battery, and generally does not include components such as drive motors, DC / DC, and on-board chargers into the scope of temperature management;

[0006] (3) The water cooling method in the cooling function of the existing electric vehicle temperature management system generally cools down through the radiator of the water tank, the cooling efficiency is low, and it is greatly affected by the ambient temperature;

[0007] (4) The existing electric vehicle temperature management system has fixed pipelines and a single working mode, and cannot flexibly adjust the temperature management mode according to temperature changes

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