Circuit for controlling low power DC-DC converter of hybrid vehicle and method for controlling low power DC-DC converter
First Claim
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1. A low power direct current-direct current (DC-DC) converter (LDC) control circuit, comprising:
- a detector configured to detect an output voltage of the LDC and characteristic factors in a vehicle, wherein the characteristic factors are detected using sensors in the vehicle;
a storage configured to receive the characteristic factors and to cumulatively store the characteristic factors; and
an LDC controller configured to initialize the characteristic factors cumulatively stored in the storage when a state of charge (SOC) of a vehicle battery is maintained to a preset value for a preset time while the LDC output voltage is maintained to be the same as in a refresh operation, wherein the refresh operation is an operation for charging the battery.
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Abstract
A low power DC-DC converter (LDC) control circuit is provided and includes a detector, a storage, and an LDC. The detector detects an output voltage of the LDC and characteristic factors in a vehicle. The storage receives the characteristic factors and cumulatively stores the characteristic factors. The LDC controller initializes the characteristic factors cumulatively stored in the storage when a state of charge (SOC) of a battery of the vehicle is maintained to a preset value for a preset time while the LDC output voltage is maintained to be the same as in a refresh operation.
8 Citations
16 Claims
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1. A low power direct current-direct current (DC-DC) converter (LDC) control circuit, comprising:
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a detector configured to detect an output voltage of the LDC and characteristic factors in a vehicle, wherein the characteristic factors are detected using sensors in the vehicle; a storage configured to receive the characteristic factors and to cumulatively store the characteristic factors; and an LDC controller configured to initialize the characteristic factors cumulatively stored in the storage when a state of charge (SOC) of a vehicle battery is maintained to a preset value for a preset time while the LDC output voltage is maintained to be the same as in a refresh operation, wherein the refresh operation is an operation for charging the battery. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A low power direct current-direct current DC-DC converter (LDC) control method, comprising:
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detecting, by a detector, an output voltage of the LDC and characteristic factors in a vehicle to determine whether to perform a refresh operation; receiving, by a storage, the characteristic factors and cumulatively storing the characteristic factors; determining, by an LDC controller, whether the LDC output voltage is maintained to be the same as in the refresh operation; determining, by the LDC controller, whether a time that state of charge (SOC) of a battery in the vehicle exceeds a preset value and exceeds a preset time; and initializing, by the LDC controller, the characteristic factors cumulatively stored in the storage, wherein the characteristic factors are detected using sensors in the vehicle, and the refresh operation is an operation for charging the battery. - View Dependent Claims (8, 9, 10, 11)
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12. 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 detect an output voltage of a low power direct current-direct current DC-DC converter (LDC) and characteristic factors in a vehicle to determine whether to perform a refresh operation; program instructions that receive the characteristic factors and cumulatively storing the characteristic factors; program instructions that determine whether the LDC output voltage is maintained to be the same as in the refresh operation; program instructions that determine whether a time that state of charge (SOC) of a battery in the vehicle exceeds a preset value and exceeds a preset time; and program instructions that initialize the characteristic factors cumulatively stored in the storage, wherein the characteristic factors are detected using sensors in the vehicle, and the refresh operation is an operation for charging the battery. - View Dependent Claims (13, 14, 15, 16)
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Specification