The invention discloses a battery charging balance maintenance method for a pure electric wide-body dumper, and belongs to the technical field of battery charging. And the VCU detects the maximum voltage value of the single battery, the dynamic voltage difference of the battery core and the cycle index, timely adjusts the requested output constant-current charging current value, and reduces the requested output constant-current charging current value and the requested current of the BMS according to the charging current MAP to charge the battery pack. By dynamically adjusting the charging current of the battery pack, when the voltage is small, the original charging current MAP request logic of the battery system is maintained, the battery pack is charged with the constant charging current, the battery is rapidly charged, and when the voltage is high and when the dynamic voltage difference change of the battery core is large and the charging cycle times are large, the charging efficiency is high. The VCU requests to output the constant-current charging current value and the charging current MAP requests that the current is small, stable charging is carried out, energy waste in the charging process is reduced, battery damage in the charging process is reduced, and the maintenance frequency of the battery is reduced.
本发明的一种纯电宽体自卸车电池充电均衡保养方法,属于电池充电技术领域。VCU对电池单体最高电压值、电芯动态压差及循环次数进行检测,及时调整请求输出恒流充电电流值,并将请求输出恒流充电电流值与BMS根据充电电流MAP请求电流取小,对电池组进行充电。本发明通过动态地调整对电池组的充电电流,电压较小时,保持电池系统原有的充电电流MAP请求逻辑,以恒流充电电流对电池组进行充电,快速地对电池进行充电,电压较高时及当电芯动态压差变化较大及充电循环次数较多,VCU请求输出恒流充电电流值与充电电流MAP请求电流取小,进行稳定的充电,降低充电过程中的能源浪费,减少充电过程中的电池损坏,降低对电池的维护保养频次。
Battery charging balance maintenance method for pure electric wide-body dump truck
一种纯电宽体自卸车电池充电均衡保养方法
2025-01-21
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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