The invention discloses a self-
adaptive control method for a cooling electronic fan of a pure
electric bus driving
system. The method specifically comprises the following steps: (1), when a key signalis equal to 1, enabling a cooling
system to be in a power-off mode; (2), when the key
signal is equal to 2, enabling the cooling
system to enter an awakening mode; (3), when the key
signal is greaterthan or equal to 3, self-checking an electronic fan, and entering a waiting mode after the self-checking is finished; (4), after entering a waiting mode, not entering a
driving mode, enabling a waterpump and a fan not to work, and only when the motor or the
motor control temperature is greater than a set threshold value, enabling the water pump to intervene in working in advance and stopping working until the motor and
motor controller temperature is lower than the set threshold value; and (5) when detecting that the whole vehicle enters the
driving mode, enabling the water pump, enabling the electronic fan to enter the working mode, and enabling the PWM of the electronic fan to be equal to max (PWM1, PWM2). The method is simple in control, low in cost, easy to implement, suitable for cooling the electronic fan of the pure
electric bus driving system and capable of effectively avoiding
excessive energy consumption of the cooling system.