The invention relates to the technical field of power batteries, in particular to a discharge allowable power control method and device, a vehicle and a medium, and the method comprises the steps: obtaining the minimum monomer voltage of a power battery at the current moment; if the lowest monomer voltage of the power battery at the current moment is smaller than a preset under-voltage threshold value, the actual discharging power of the power battery at the moment when the lowest monomer voltage of the power battery starts to be smaller than the preset under-voltage threshold value and the lowest monomer voltage of the power battery at the previous moment are obtained; according to the lowest monomer voltage of the power battery at the current moment and the lowest monomer voltage of the power battery at the previous moment, the voltage change trend and the voltage change quantity of the lowest monomer voltage of the power battery are calculated, so that the target change rate of the discharge allowable power of the power battery at the current moment is determined; and controlling the allowable discharge power of the power battery according to the actual discharge power and the target change rate. Therefore, the problems of power limitation caused by over-discharge of the battery and sudden change of vehicle power and the like in the prior art are solved.
本发明涉及动力电池技术领域,特别涉及一种放电允许功率控制方法、装置、车辆及介质,其中,包括:获取当前时刻动力电池的最低单体电压;若当前时刻动力电池的最低单体电压小于预设欠压阈值,则获取动力电池的最低单体电压开始小于预设欠压阈值的时刻动力电池的放电实际功率、以及上一时刻动力电池的最低单体电压;根据当前时刻动力电池的最低单体电压和上一时刻动力电池的最低单体电压,计算动力电池的最低单体电压的电压变化趋势和电压变化量,从而确定当前时刻动力电池的放电允许功率的目标变化速率;根据放电实际功率和目标变化速率控制动力电池的放电允许功率。由此,解决了现有技术电池过放引发功率限制,导致车辆动力突变等问题。
Discharge allowable power control method and device of power battery, vehicle and medium
动力电池的放电允许功率控制方法、装置、车辆及介质
2024-05-03
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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