Device and method for controlling battery SOC of hybrid vehicle
First Claim
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1. A device for controlling a battery State of Charge (SOC) of a hybrid vehicle, comprising:
- a navigation system which provides a driving route and gradient information within a predetermined distance ahead;
a controlling determining unit which determines whether it is required to control the battery SOC based on the information provided from the navigation system, a vehicle speed, and SOC information;
a user interface which receives a feedback of a driving direction from a driver when it is determined that it is required to control the battery SOC; and
a charging/discharging scheduler unit which sets a reference SOC trajectory by calculating an SOC amount based on the driving path and the gradient information within the predetermined distance ahead and charges or discharges the battery within the set reference SOC trajectory, when the feedback of the driving direction from the driver is received,wherein the controlling determining unit outputs a flag for controlling the battery SOC after receiving the feedback of the driving route from the driver when there is a crossroad in the driving route within the predetermined distance ahead.
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Abstract
A device and a method for controlling a battery SOC of a hybrid vehicle that utilizes a 3D map database navigation system includes: checking a gradient condition of a road ahead and soliciting feedback from the driver as to an intended driving direction, and determining whether to control to charge or discharge a battery of the hybrid vehicle in accordance with the gradient condition of the road ahead so that the predictive energy management control of the hybrid vehicle is performed even when the driver does not set the driving route using the navigation.
47 Citations
11 Claims
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1. A device for controlling a battery State of Charge (SOC) of a hybrid vehicle, comprising:
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a navigation system which provides a driving route and gradient information within a predetermined distance ahead; a controlling determining unit which determines whether it is required to control the battery SOC based on the information provided from the navigation system, a vehicle speed, and SOC information; a user interface which receives a feedback of a driving direction from a driver when it is determined that it is required to control the battery SOC; and a charging/discharging scheduler unit which sets a reference SOC trajectory by calculating an SOC amount based on the driving path and the gradient information within the predetermined distance ahead and charges or discharges the battery within the set reference SOC trajectory, when the feedback of the driving direction from the driver is received, wherein the controlling determining unit outputs a flag for controlling the battery SOC after receiving the feedback of the driving route from the driver when there is a crossroad in the driving route within the predetermined distance ahead. - View Dependent Claims (2, 3, 4, 5)
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6. A method of controlling a battery SOC of a hybrid vehicle, comprising:
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a controlling determining step of determining whether it is required to control charging or discharging of a battery for every battery SOC based on a driving route and gradient information within a predetermined distance ahead and a vehicle speed, and SOC information; a user interface executing step of receiving a feedback of a driving direction from a driver when it is determined that it is required to control the charging or discharging of the battery; a charging or discharging scheduling step of setting a reference SOC trajectory by calculating an SOC amount based on the driving route and the gradient information within a predetermined distance ahead when the feedback of the driving direction from the driver is received and controlling to charge or discharge the battery within the set reference SOC trajectory; and outputting a flag for controlling the battery SOC for the charging or discharging scheduling when it is determined to satisfy the condition that the calculated predictive required power or an average gradient value is equal to or larger than or equal to or smaller than a predetermined limit and the current battery SOC is maintained in a predetermined band, wherein when there is a crossroad in the driving route within the predetermined distance ahead, the flag for controlling the battery SOC is output after receiving the feedback of the driving route from the driver. - View Dependent Claims (7, 8, 9, 10)
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11. A non-transitory computer readable medium containing program instructions executed by a controller, the computer readable medium comprising:
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program instructions that determine whether it is required to control charging or discharging of a battery of a hybrid vehicle for every battery SOC based on a driving route and gradient information within a predetermined distance ahead and a vehicle speed, and SOC information; program instructions that receive a feedback of a driving direction from a driver when it is determined that it is required to control the charging or discharging of the battery; program instructions that set a reference SOC trajectory by calculating an SOC amount based on the driving route and the gradient information within a predetermined distance ahead when the feedback of the driving direction from the driver is received and controlling to charge or discharge the battery within the set reference SOC trajectory; and program instructions that output a flag for controlling the battery SOC for the charging or discharging scheduling when it is determined to satisfy the condition that the calculated predictive required power or an average gradient value is equal to or larger than or equal to or smaller than a predetermined limit and the current battery SOC is maintained in a predetermined band, wherein when there is a crossroad in the driving route within the predetermined distance ahead, the flag for controlling the battery SOC is output after receiving the feedback of the driving route from the driver.
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Specification