The invention relates to power management of a high-current fast-charging battery. Powerflow is managed using a method, e.g., in a powertrain system having a multi-pack rechargeable energy storage system (RESS) with parallel battery packs. Each pack has a corresponding maximum electrical (current or voltage) limit. The method includes predicting a corresponding terminal voltage for each pack usingthe corresponding maximum electrical limit. The method includes selecting a terminal voltage as a selected voltage based on a requested operating mode, including selecting a maximum of the terminal voltages when the requested operating mode is a discharging mode and a minimum of the same when the requested operating mode is a charging mode. A pack current through each pack is predicted using theselected voltage and a corresponding battery state space model. A total power capability of the RESS is predicted over a predetermined prediction horizon using the selected voltage, with the operatingmode controlled over the prediction horizon via the controller.
本发明涉及大电流快速充电电池的功率管理。使用一种方法例如在具有带有并联电池组的多电池组可再充电能量存储系统(RESS)的动力系统中管理功率流。每个电池组具有对应的最大电气(电流或电压)极限。该方法包括使用对应的最大电气极限来预测每个电池组的对应端电压。该方法包括基于请求的操作模式选择端电压作为选择的电压,包括当请求的操作模式是放电模式时选择端电压的最大值以及当请求的操作模式是充电模式时选择端电压的最小值。使用选择的电压和对应的电池状态空间模型来预测通过每个电池组的电池组电流。使用选择的电压在预定的预测时域内预测RESS的总功率容量,其中操作模式经由控制器在预测时域内被控制。
POWER MANAGEMENT OF HIGH-CURRENT FAST-CHARGING BATTERY
大电流快速充电电池的功率管理
2020-11-17
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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