The invention discloses a DCDC start-stop control method for a low-voltage storage battery of an electric vehicle, and the method comprises the steps: obtaining the voltage of the low-voltage storagebattery according to the discharge characteristics of the low-voltage storage battery at a moment before the DCDC charges the low-voltage storage battery, and determining the first working time of theDCDC and the first stop time of the DCDC according to the voltage of the low-voltage storage battery; and then keeping the output voltage of the DCDC unchanged when the DCDC charges the low-voltage storage battery, and after the first stop time of the DCDC is over, circularly executing the control process in this way. The starting and stopping time of the DCDC is reasonably adjusted, the discharging characteristic of the low-voltage storage battery is met, and the working efficiency of the DCDC and the energy utilization rate of the whole vehicle are improved.
本发明公开了一种电动汽车低压蓄电池DCDC启停控制方法,在DCDC给低压蓄电池充电前一时刻,根据低压蓄电池放电特性获取低压蓄电池电压,根据低压蓄电池电压确定DCDC第一工作时间和DCDC第一停止时间,然后在DCDC给低压蓄电池充电时保持DCDC输出电压不变,当DCDC第一停止时间结束后,依此循环执行上述控制过程。合理调整DCDC的启停时间,既符合低压蓄电池的放电特性,又提高了DCDC的工作效率和整车能量利用率。
DCDC start-stop control method for low-voltage storage battery of electric vehicle
电动汽车低压蓄电池DCDC启停控制方法
2021-03-12
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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