主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2026, Vol. 51 ›› Issue (3): 45-49.DOI: 10.16638/j.cnki.1671-7988.2026.003.008

• 新能源汽车 • 上一篇    

纯电汽车电机扭矩限值闭环控制研究

王家辉 1，徐宏达 2，陈龙 2   

  1. 1.大众汽车（中国）科技有限公司； 2.合创汽车科技有限公司
  • 发布日期:2026-02-04
  • 通讯作者: 王家辉
  • 作者简介:王家辉（1989－），男，硕士，工程师，研究方向为整车控制器软件策略开发

Research on Closed-Loop Control of Torque Limit for Pure Electric Vehicle Motors

WANG Jiahui1 , XU Hongda2 , CHEN Long2   

  1. 1.Volkswagen (China) Technology Company Limited; 2.HYCAN Automotive Technology Company Limited
  • Published:2026-02-04
  • Contact: WANG Jiahui

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摘要： 为解决纯电汽车动力电池过充和过放问题，文章提出基于电机实时效率和电流比值计 算的电机扭矩限值闭环控制方法。结合整车能量管理架构，分析电机驱动与制动两种工况下的 能量分配及限制逻辑，通过 Simulink 搭建整车能量管理与扭矩限值闭环控制策略模型，采用 代码生成刷写工具将控制逻辑刷入整车控制器开展实车测试。结果表明，将动力电池充放电 能力预处理至设计最小值，进行全油门驱动与全刹车制动性能测试时，电机扭矩可动态贴合 限制值，动力电池未出现过充过放故障。

关键词: 动力电池；过充和过放；能量管理；闭环控制；实车测试

Abstract: To address the overcharge and over-discharge problems of power batteries in battery electric vehicles, this paper proposes a closed-loop control method for motor torque limits based on the calculation of real-time motor efficiency and current ratio. Combined with the vehicle energy management architecture, it analyzes the energy distribution and limiting logic under the two operating conditions of motor driving and motor braking. A model of the vehicle energy management and closed-loop control strategy for torque limits is established via Simulink, and the control logic is flashed into the vehicle control unit by means of code generation and flashing tools for real vehicle tests. The results show that when the charge-discharge capacity of the power battery is pre-treated to the designed minimum value and the full-throttle driving and full-brake braking performance tests are conducted, the motor torque can dynamically track the limit value, and no overcharge or over-discharge fault occurs in the power battery.

Key words: over-discharge fault occurs in the power battery.