An electric vehicle power-on method based on wake-up sources, comprising: a first control unit receives and identifies different wake-up sources; if the wake-up sources correspond to high voltage use requests, the first control unit sends a control instruction to a battery management system; the battery management system makes a battery output high voltage power, and feeds back the execution result to the first control unit; the first control unit either starts a fault processing program or instructs a voltage conversion unit to convert high voltage outputted by the battery to low voltage.
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