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Method of controlling change of travelling mode of hybrid vehicle and control apparatus thereof

  • US 10,059,326 B2
  • Filed: 02/22/2016
  • Issued: 08/28/2018
  • Est. Priority Date: 09/03/2015
  • Status: Active Grant
First Claim
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1. A method of controlling a change of a travelling mode of a hybrid vehicle, comprising:

  • calculating, by a controller, a system required power required by a device mounted within a hybrid vehicle;

    calculating, by the controller, a reference power; and

    adjusting, by the controller, a travelling mode of the hybrid vehicle from an electric vehicle (EV) mode to a hybrid electric vehicle (HEV) mode by operating an engine clutch disposed between an engine and a driving motor to be coupled when the system required power is greater than the reference power,wherein the system required power is a value obtained by adding a driver required power and a power required by an auxiliary load device of the hybrid vehicle,wherein the reference power is power when a state of charge (SOC) of the battery configured to provide power to the device of the hybrid vehicle is maintained in a normal region in which the state of charge of the battery is a first reference value or more and a second reference value or less in order to prevent loss of energy efficiency according to an energy circulation performed by the engine, the battery, and the driving motor, andwherein the power required by the auxiliary load device is set by a value obtained by multiplying consumed power of the auxiliary load device by a weighting factor, and when the SOC of the battery is lower than a threshold value, the weighting factor is set to be larger than a factor value, and when the SOC of the battery is higher than the threshold value, the weighting factor is set to be smaller than the factor value.

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