Blower apparatus and method for controlling blower apparatus in vehicle

摘要

The blower apparatus includes a motor; a fan; a motor drive circuit for electrically driving the coil; a microprocessor for controlling the motor drive circuit; and a motor case integrally incorporating the motor, the motor drive circuit, and the microprocessor. The blower apparatus further includes an internal power line for supplying power supply voltage Vig supplied to power supply input terminal Tv1, to the motor drive circuit and the microprocessor in the motor case; a smoothing capacitor connected to the internal power line; and a cut off control circuit for cutting off supply of the power supply voltage to the internal power line according to a command from the microprocessor.

主权项

1. A blower apparatus in which power supply voltage from a battery is supplied to a power supply input terminal through a power supply switch of which on-off control is made according to a state of an ignition switch of a vehicle, comprising:
a motor having a stator with a coil wound therearound and a rotor disposed rotatably about a rotation shaft; a blowing fan on the rotation shaft; a motor drive circuit for electrically driving the coil; a microprocessor for controlling the motor drive circuit; a motor case integrally containing the motor, the motor drive circuit, and the microprocessor; an internal power line for supplying the power supply voltage applied to the power supply input terminal to the motor drive circuit and the microprocessor in the motor case; a smoothing capacitor connected to the internal power line; and a cut off control circuit for cutting off supply of the power supply voltage to the internal power line according to a command from the microprocessor, wherein the cut off control circuit makes the power supply switch turn off to cut off supply of the power supply voltage to the internal power line.