Cooling device for motor and motor controller

The embodiment of the utility model discloses a cooling device for a motor and a motor controller. The cooling device comprises a heat radiation device, a cooling liquid pump, a motor controller control module and a data collecting unit; the data collecting unit comprises a pressure sensor arranged at a water outlet of the cooling liquid pump; the motor controller control module receives collection data of the data collecting unit; according to the collection data, the motor controller control module generates a corresponding motor control order through a pre-set control strategy assembly; and the motor controller controls the motor to switch on or off according to the motor control order. In the embodiment, the motor controller control module can generate the corresponding motor control order when the cooling liquid pump has a fault to control the motor to switch on or off, so that the problem of too high temperature of the motor and the motor controller, caused by continuous operation of the motor in a condition that the cooling liquid pump has the fault and cannot effectively cool down the motor, can be solved.