The invention relates to a power supply system of an electric vehicle and a power supply control method, the power supply system comprises a power battery, a first direct current converter, a motor controller, a low voltage battery and a power relay, the first direct current converter converts an output high voltage of the first direct current converter into a first direct current voltage, and the motor controller is connected with the low voltage battery. A second direct current converter can be further arranged in the motor controller; when the motor controller judges that the first direct-current voltage output by the first direct-current converter is not within a preset range, the low-voltage battery or the second direct-current converter can still supply power to a power relay to enable the power relay to maintain conduction, so that the motor controller receives the output high voltage through the power relay to drive a motor to operate, and the motor is driven to operate. Therefore, the electric vehicle does not lose power suddenly when the first direct current converter is abnormal, and a rider has enough time to carry out emergency response.
本发明为一种电动车的电源系统及供电控制方法,该电源系统包含一动力电池、一第一直流转换器、一马达控制器、一低压电池及一电力继电器,其中,该第一直流转换器将该第一直流转换器的一输出高压转换为一第一直流电压,在该马达控制器内可进一步设置一第二直流转换器;当该马达控制器判断该第一直流转换器输出的该第一直流电压未在一预设范围时,该低压电池或该第二直流转换器仍可供电给电力继电器使其维持导通,如此一来,该马达控制器借由该电力继电器接收该输出高压以驱动一马达运转,令电动车在该第一直流转换器异常时不会突然失去动力,使骑乘者有足够时间进行紧急反应。
Power supply system of electric vehicle and power supply control method
电动车的电源系统及供电控制方法
2025-05-13
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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