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Motor control system, method, and device for changing control software for a vehicle cooling blower

  • US 9,785,156 B2
  • Filed: 04/24/2013
  • Issued: 10/10/2017
  • Est. Priority Date: 06/12/2012
  • Status: Active Grant
First Claim
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1. A motor control system, comprising:

  • a motor control device for controlling a motor of a cooling blower for cooling a battery incorporated in a vehicle; and

    a host controller including a plurality of different pieces of control software applicable to a plurality of destinations for the cooling blower, the host controller transmitting and receiving control information of the motor to and from the motor control device by means of PWM signals Si and So, whereinthe host controller embeds a destination-signal request pattern into the PWM signal Si for requesting a destination signal pattern to specify the destinations, and transmits the PWM signal Si to the motor control device;

    the motor control device, upon receiving the destination-signal request pattern, embeds the destination signal pattern into the PWM signal So and transmits the PWM signal So to the host controller;

    the host controller specifies one of the destinations for the cooling blower by extracting the destination signal pattern from the PWM signal So and changes over the control software to the control software applicable to the specified one of destinations for the cooling blower; and

    the destination signal pattern is embedded into the PWM signal So by;

    setting at least a first predetermined frequency and at least a first predetermined duty cycle of the PWM signal So as a first combination to represent a first data type, the first combination being unique to the first data type, andsetting at least a second predetermined frequency and at least a second predetermined duty cycle of the PWM signal So as a second combination to represent a second data type different than the first data type, the second combination being unique to the second data type,wherein the first combination is different than the second combination.

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