Extended-range electric vehicle heat management system and method

Abstract

The invention discloses an extended-range heat management system and method. On the basis of the extended-range electric vehicle heat management system, waste heat recovery of an engine and a motor isachieved, engine waste heat or motor waste heat can be distributed to a battery pack and / or a cockpit according to needs at the same time, so that the waste heat of the motor and the engine is recovered to the maximum extent to be used for heating of the battery pack and the cockpit, and the energy consumption of a PTC heater is reduced. Meanwhile, when heat is supplied to the battery pack and the cockpit, the motor waste heat or the engine waste heat can be distributed to the battery pack and an air heating core body in different proportions by controlling the rotating speed of an electronicwater pump III.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and more specifically, the invention relates to a heat pipe system and a method thereof for an extended-range electric vehicle. Background technique [0002] With the development of new energy vehicles, extended-range electric vehicles are more and more popular in the market because they have the driving experience of pure electric vehicles and the convenience of energy supplementation of fuel vehicles, which solves the mileage anxiety of pure electric vehicles. Foreign automakers have begun to increase the research and development of extended-range electric vehicles. Among them, the thermal management system of the extended-range electric vehicle not only undertakes the thermal management of the air conditioning system, the cooling of the electric drive system, and the cooling of the engine system, but also undertakes the important task of battery thermal management, and its importance is se...

AI Technical Summary

Problems solved by technology

[0004] 1. In the pure electric mode in winter, the heating source is single, and the heating of the air conditioner heater core and the battery pack is completely dependent on the PTC water heater for heating, resulting in a large power consumption of the PTC and shortening the cruising range of the vehicle; and it is necessary to choose a high heating power during design PTC water heater, high cost

[0005] 2. In the extended range mode in winter or after the engine is running, the waste heat of the engine is indirectly transferred to the battery for heating after secondary heat exchange with the heat exchanger, resulting in a slow temperature rise of the battery pack at low temperature

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