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Apparatus for controlling battery state of charge, system having apparatus for controlling battery state of charge, and method for controlling battery state of charge

  • US 10,688,869 B2
  • Filed: 07/20/2017
  • Issued: 06/23/2020
  • Est. Priority Date: 04/26/2017
  • Status: Active Grant
First Claim
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1. An apparatus for controlling a state of charge (SOC) of a battery, comprising:

  • a driving state determination device for determining whether a vehicle is in a constant current driving state;

    a battery SOC calculation device for calculating the SOC of the battery;

    a battery SOC determination device for determining whether the SOC of the battery is within a predetermined range; and

    an RPM control device for controlling a revolution per minute (RPM) of an air blower depending on a determined result by the battery SOC determination device and a number of charge/discharge cycles of the battery when the vehicle is in the constant current driving state,wherein the RPM control device controls the RPM of the air blower such that the SOC of the battery reaches a target value of the SOC of the battery in a case where the vehicle is not in the constant current driving state, and reduces an increase/decrease amount of the RPM of the air blower based on the number of charge/discharge cycles of the battery when the vehicle is in the constant current driving state, andwherein the RPM control device;

    increases the RPM of the air blower by a first compensation value when the calculated SOC of the battery is equal to or smaller than a first reference value,sets the RPM of the air blower to a fixed second compensation value when the calculated SOC of the battery is greater than the first reference value and smaller than a second reference value, anddecreases the RPM of the air blower by a third compensation value when the calculated SOC of the battery is equal to or greater than the second reference value.

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