摘 要：针对纯电动商用车在低温环境下电池性能衰减问题，本文提出一种基于脉冲电流的加热技术，利用电机定子绕组的电感特性及IGBT的开关特性在电池中形成脉冲电流，通过协调控制多个电机和电控，实现车辆在驱动和充电时的脉冲加热功能，以及多个电池包间的均衡加热功能。为验证该技术的效果，在不同电流、不同频率下进行脉冲加热试验。结果表明，加热过程中电池电量损耗较低、加热效率高，平均温升速率达到1.05 ℃/min。该技术能有效提升纯电动商用车电池的低温性能。
关键词：纯电动；商用车；脉冲加热；均衡加热；电流；频率
中图分类号：U469.72；TM912.9 文献标志码：A DOI：10.15917/j.cnki.1006-3331.2025.03.002
Research on Pulse and Balanced Heating Technology for Pure Electric Commercial Vehicle Batteries
TAN Xianhua,FENG Xue,LI Peng,YANG Kuan,YUAN Xinyang,ZHANG Kun
Abstract: Aiming at the problem of pure electric commercial vehicle battery performance attenuation in low-temperature environments,this paper proposes a heating technology based on pulse current,which uses the inductance characteristics of the motor stator winding and the switching characteristics of the IGBT to form pulse current in the battery.By coordinating the control of multiple motors and electronic controls,which realizes the pulse heating function of the vehicle during driving and charging,and the balanced heating function between multiple battery packs.Carrying out Pulse heating tests at different currents and frequencies,the results show that the battery power loss during the heating process is low,the heating efficiency is high,and the average temperature rise rate reaches 1.05℃/min.This technology can effectively improve the low-temperature performance of pure electric commercial vehicle batteries.
Key words: pure electric; commercial vehicle; pulse heating; balanced heating; current;frequency
