Control Strategy Analysis of Vehicle Thermal Management System Based on Motor Heat Utilization

Abstract

Waste heat recovery can not only reduce the heating energy consumption during heating, but also assist the PTC to improve the heating efficiency. In this work, a motor waste heat recovery system composed of two four‐way valves is proposed. Through simulation and test, the thermal management system model is established based on the parameters of each component. Experiments and simulations were also conducted at 0 °C, 20 °C and 40 °C. Under the New European Driving Cycle (NEDC), it was verified that the motor waste heat recovery system can meet the heating demand of the cabin. At the same time the temperature rise of the battery increased by 2.9% from 0 °C to 15 °C compared to no heat recovery system. From 0 °C to 18 °C, the cabin temperature increased by 8.1%. The cooling rate of the battery increased by 5.8% from 40 °C to 30 °C and the cooling rate of the cabin increased by 9.7% from 40 °C to 23 °C.This article is protected by copyright. All rights reserved.