电动汽车的电池包均衡系统和均衡方法

• Format: Patent
• Language: Chinese
• Published: 20.10.2017
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; VEHICLES IN GENERAL

本发明公开了种电动汽车的电池包均衡系统，该系统包括电池包、外部辅助均衡模块、电压采集模块、m个均衡模块和控制模块，其中，电池包包括m个电池模组，每个电池模组包括n个电池单体,其中，m≥2，n≥2；电压采集模块采集每个电池模组内电池单体的电压；每个均衡控制模块包括第控制开关、DC/DC转换单元和第二控制开关，控制模块根据电池模组内的电池单体的电压获得对应电池模组的电压，并根据电池模组的电压和电池单体的电压控制外部辅助均衡模块、第控制开关和第二控制开关以对电池包进行均衡。该电池包均衡系统，可以保证电池包的致性和可维护性，成本低。本发明还公开种电池包均衡方法。