The invention discloses a battery system capable of automatically balancing charging and discharging, which comprises a plurality of single batteries and control units, the single batteries are connected with the control units in a one-to-one correspondence manner, and the control units are connected through a CAN (Controller Area Network) bus; the control unit sends an ID signal of the control unit to the system, receives ID signals sent by other control units in the system, and establishes communication with each control unit in the system; the control unit obtains the voltage of the single battery corresponding to the control unit, periodically sends the voltage information of the single battery to the system, and monitors the voltage of the single battery sent by other control units in the system; the control unit obtains the charging and discharging state of the system based on the charging and discharging state of the corresponding single battery; and on the basis of the voltage of the corresponding single battery and the voltage of other single batteries in the system, the on-off states of the discharging MOS tube and the charging MOS tube of the corresponding single battery are adjusted. According to the invention, the difference between the actual endurance mileage and the theoretical endurance mileage of the vehicle is reduced.
本申请公开一种充放电自动均衡的电池系统,包括多个单体电池和控制单元,单体电池与控制单元一一对应连接,各控制单元之间通过CAN总线连接;控制单元将自身的ID信号发送至系统中,并接收系统中其它控制单元发出的ID信号,与系统中各控制单元建立通讯;控制单元获取自身对应的单体电池电压,并将自身单体电池电压信息周期性发送至系统中,并监听系统中其它控制单元发出的单体电池电压;控制单元基于自身对应的单体电池充放电状态,得到系统充放电状态;并基于自身对应的单体电池电压和系统中其它单体电池电压,调整自身对应的单体电池的放电MOS管和充电MOS管的开关状态。本申请减小了车辆实际续航里程与理论续航里程的差距。
Battery system capable of automatically balancing charging and discharging
一种充放电自动均衡的电池系统
2024-04-12
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
Europäisches Patentamt | 2024
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