Affiliation:
1. School of Automotive and Traffic Engineering Jiangsu University Zhenjiang 212013 China
2. Automotive Engineering Research Institute Jiangsu University Zhenjiang 212013 China
3. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Engineering Mechanics Tsinghua University Beijing 100084 China
Abstract
The active battery thermal management system is critical for the security of electric vehicles. In this article, a novel battery thermal management system and the control strategy based on thermoelectric cooling are proposed. A coupling model between the thermoelectric cooler and the battery pack is built by MATLAB/Simscape software. The model precision is verified through the experimental bench test, with a maximal deviation of 0.56 °C (the accuracy of the temperature sensor is ±0.1 °C). Further, a battery thermal management strategy with model predictive control (MPC) is proposed. In the results, it is elucidated that the MPC strategy has a superiority over the proportional‐integral‐derivation (PID) strategy in both the response time and energy consumption. Notably, the MPC strategy achieves a 35.17% reduction in response time and a 28.65% decline in energy consumption under a constant current of 2 C. Furthermore, during the variable H_N_U_F cycle conditions, the control effects are also evident, with an overshoot diminution of 12.2%, a maximum temperature error decrease of 23.85%, a response time reduction of 31.15%, and an energy utilization decline of 31.85%. In this study, a novel perspective in advancing battery thermal management systems through the application of thermoelectric cooler is provided.
Funder
National Natural Science Foundation of China