Abstract: In view of the discrepancy between the charging test results of existing power battery system test benches and the vehicle charging test data, the bench test results are difficult to be directly applied to the vehicle development process. To effectively address the above issue, this paper proposes a test scheme. Based on the composition architecture and control strategy of the vehicle thermal management system, AMESim software is used for simulation calculations to obtain the temperature data of the coolant after flowing through the vehicle thermal management system under different temperature conditions. Subsequently, according to the simulation results, a water chiller is used to output coolant at specific temperatures, and relevant data are verified through comparisons between vehicle tests and bench tests. The results show that under the test conditions of 40 ℃ and -20 ℃, the difference in total charging completion time between the two is less than 1%; the average absolute errors in temperature on the time axis are 0.717 and 0.530, respectively. These results indicate that through the design of the test scheme, the bench test and vehicle test results exhibit high consistency, can meet actual engineering requirements, and are of great significance for improving the development efficiency of vehicle projects.

Key words: battery electric vehicle; liquid-cooled power battery; AMESim; test design

摘要： 鉴于现有动力电池系统试验台架的充电试验结果与整车充电试验数据存在差异，导致 台架试验结果难以直接应用于整车开发进程。为有效解决上述问题，文章提出一种试验方案， 基于整车热管理系统的组成架构与控制策略，利用 AMESim 软件进行仿真计算，以获取冷却 液在不同温度工况下流经整车热管理系统后的温度数据。随后，依据仿真结果，利用水冷机 输出特定温度的冷却液，并通过整车试验与台架试验的对比，对相关数据进行验证。结果表 明，在 40 ℃和-20 ℃试验条件下，两者在总充电完成时间上的差异不足 1%；在时间轴上的 温度平均绝对误差分别为 0.717 和 0.530。结果表明，通过试验方案的设计，台架试验与整车 试验结果具有较高一致性，能够满足实际工程需求，对提升整车项目开发效率具有重要意义。

关键词: 纯电动汽车；液冷动力电池；AMESim；试验设计