The invention provides a power battery system, an electric excavator power system and a heating control method. The power battery system comprises a power battery, a direct-current charging positive relay, a heating relay, a battery heating element and a control circuit. The power battery is electrically connected with the charger through the direct-current charging positive relay; the heating relay and the battery heating element are connected in series and then connected with the power battery to form a heating loop, and the heating loop of the power battery is conducted to heat the power battery when the heating relay is closed; the charger is also used for supplying power to the heating loop; and the control circuit is electrically connected with the power battery, the heating relay and the direct-current charging positive relay, and is used for controlling the on-off of the heating relay and the direct-current charging positive relay according to the temperature of the power battery, and the power battery is heated under a low-temperature condition, thereby improving the charging efficiency of the power battery under the low-temperature condition.
本申请提供了一种动力电池系统、电动挖掘机动力系统和加热控制方法,动力电池系统包括动力电池、直流充电正继电器、加热继电器、电池加热元件及控制电路;动力电池通过直流充电正继电器与充电机电性连接;加热继电器及电池加热元件串联后与动力电池连接,形成加热回路,加热继电器闭合时导通动力电池的加热回路为动力电池加热;充电机还用于为加热回路供电;控制电路与动力电池、加热继电器及直流充电正继电器电性连接,用于根据动力电池的温度控制加热继电器及直流充电正继电器的开断,在低温条件下为动力电池加热,提高动力电池在低温条件下的充电效率。
Power battery system, electric excavator power system and heating control method
动力电池系统、电动挖掘机动力系统和加热控制方法
2020-09-04
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Electric excavator integrated control system and electric excavator system
Europäisches Patentamt | 2020
|Battery replacement system of electric excavator and control method of battery replacement system
Europäisches Patentamt | 2023
|