摘要
随着电动汽车对电子模块的大规模运用,导致车内部电磁系统的复杂性显著提高。针对电池管理系统(BMS)易被电磁波影响,进而降低电动汽车安全性的情况,对BMS进行电磁抗干扰设计至关重要。通过探究电动汽车内部电磁作用的耦合机制,确定BMS的主要干扰源;对BMS进行硬件防干扰性能以及外壳屏蔽性能的设计,增强系统电磁的抗干扰能力。依据道路车辆电磁兼容性标准,对电池管理系统进行静电放电、电快速脉冲群、工频磁场、电压跌落抗干扰测试。测试结果表明,优化设计后的BMS能有效抵抗电磁干扰,稳定性较好、采集精度高,对电动汽车电磁抗干扰设计具有一定的参考价值。
With the improvement of electronic modules used in electric vehicle(EV), the electromagnetic environment in EV becomes more and more serious. As BMS is easily influenced by electromagnetic interference(EMI) that leads to reduce the vehicle safe and reliable operation, it is very important to make anti-electromagnetic interference design for BMS. Through analyzing the EMI coupling mechanism in EV, the EMI resources in BMS were pointed out. The hardware anti-interference and the shell shield performance were designed to improve the anti-electromagnetic interference performance in BMS. Based on the EMC standard for road vehicles, the electrostatic discharge(ESD), electrical fast transient(EFT), power frequency magnetic field(PFMF) and voltage drop(VDG) were tested in BMS. The results show that the designed BMS has effective anti-interference performance, good stability and high precision, and it also has reference value for anti-electromagnetic interference design of electric vehicle.
出处
《电源技术》
CAS
CSCD
北大核心
2018年第2期271-273,319,共4页
Chinese Journal of Power Sources
基金
江西省教育厅落地计划项目(KJLD11022)
江西省教育厅青年基金(GJJ13004)
