Thermal energy storage heating system with waste heat recovery for electric vehicles

Abstract

The invention provides a waste heat-recovering heat storage heating system of an electric vehicle. The waste heat-recovering heat storage heating system of the electric vehicle is used for utilizing waste heat of an engine as well as heat energy stored after conversion of electric energy to heat a passenger compartment. The waste heat-recovering heat storage heating system of the electric vehicle is characterized by comprising a heat storage heating part, a waste heat recovering part, a heat exchange part and a control part, wherein the heat storage heating part comprises a heat storage heating device for converting the electric energy into the heat energy and storing the heat energy and a heat storage cooling liquid pipeline for transferring the heat energy; a PCM heat storage phase change material, heating plates for heating the PCM heat storage phase change material and a PCM heat exchanger arranged in the middle of the PCM heat storage phase change material are arranged inside the heat storage heating device; the waste heat recovering part comprises an electric heater and a waste heat recovering cooling liquid pipeline communicated with the electric heater; the heat exchange part comprises a first indoor heat exchanger communicated with the heat storage cooling liquid pipeline, a second indoor heat exchanger communicated with the waste heat recovering cooling liquid pipeline and a blower fan; and the control part comprises a heat storage control valve unit, a waste heat recovering control valve unit, a temperature sensor and a control unit.

Description

technical field [0001] The invention relates to a thermal energy storage heating system, in particular to a thermal energy storage heating system with waste heat recovery for an electric vehicle. Background technique [0002] Compared with traditional cars, electric vehicles do not have excess waste heat to supply the heating of the passenger compartment during heating in winter, so electric vehicles must consume battery power to meet the comfort requirements of the passenger compartment. In very cold weather conditions, the electric energy for the heating of the passenger compartment is almost the same as the electric energy required by the propulsion system. At this time, the load on the battery of the electric vehicle is greatly increased, and the cruising range of the vehicle is greatly reduced, which leads to Energy consumption must be optimized. In the existing heating technology, heat pump system heating and PTC heating are mainly used. [0003] Heat pump system hea...

AI Technical Summary

Problems solved by technology

[0003] Heat pump system heating will have a series of problems such as frosting and icing / defrosting and deicing when the ambient temperature is low. These problems will not only affect the performance of the system, but also affect the safety of the driver.

There are also problems with PTC heating. According to the second law of thermodynamics, the COP of PTC heating is about 1, which increases the load on the battery and reduces the cruising range of electric vehicles.

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