摘要
在现代电动汽车和储能系统中,电池管理系统(BMS)发挥着关键作用,负责电池的监测、保护、均衡及状态估算。GB/T 38661—2020未明确描述电池参数不一致性对BMS功能测试的影响。为提高BMS测试的准确性,设计了一款能够量化电池参数并输出电压、温度信号的硬件系统。该系统不依赖实时仿真机,采用主从式架构,结合上位机软件和Matlab引擎,进行锂电池外部特性参数的量化仿真。仿真系统主控板控制仿真实时时钟,采用基于多级功耗管理的电压输出从板来模拟电池输出电压。为解决现有设计中缺乏温度模拟和数据同步机制的问题,系统设计了电池温度模拟从板,并引入了数据缓存与同步脉冲相结合的仿真数据同步机制。测试结果表明:系统输出电压误差不超过0.15 mV,响应时间在5 ms以内,温度误差控制在0.1℃以内,精确地模拟了电池组的电气特性、动态行为及温度特性,为电池管理系统的准确评估提供了可靠的数据支持。
In modern electric vehicles and energy storage systems,battery management systems(BMS)play a crucial role in monitoring,protecting,balancing,and estimating the state of the battery.GB/T 38661—2020 does not explicitly define the impact of battery parameter inconsistencies on BMS functional testing.To improve the accuracy of BMS testing,a hardware system capable of quantifying battery parameters and outputting voltage and temperature signals was designed.The system operated independently of real-time simulators and adopted a master-slave architecture,combined with upper-level software and the Matlab engine,for the quantitative simulation of lithium battery external characteristic parameters.The simulation systems master control board governed the real-time clock,and a voltage output slave board based on multi-level power management was used to simulate the battery output voltage.To address the lack of temperature simulation and data synchronization mechanisms in existing designs,the system incorporated a battery temperature simulation slave board and introduced a simulation data synchronization mechanism combining data buffering and synchronization pulses.Test results demonstrate that the systems output precision does not exceed 0.15 mV,the response time is within 5 ms,and the temperature error is controlled within 0.1℃.The system accurately simulates the electrical characteristics,dynamic behavior,and temperature characteristics of the battery pack,providing reliable data support for the accurate evaluation of the BMS.
作者
尹润翔
张维戈
盛大双
YIN Runxiang;ZHANG Weige;SHENG Dashuang(School of Electrical Engineering,Beijing Jiaotong University;Huizhou Yineng Electronics Co.,Ltd.)
出处
《仪表技术与传感器》
北大核心
2025年第7期62-69,共8页
Instrument Technique and Sensor
关键词
锂电池虚拟仿真系统
实时仿真
电池模拟器
温度模拟器
数据同步
多场耦合
lithium battery virtual simulation system
real-time simulation
battery simulator
temperature simulator
data synchronization
multi-field coupling
