Power supply controller
First Claim
1. A power supply control apparatus for controlling a primary power supply apparatus;
- a step-up circuit which steps up an output voltage of the primary power supply apparatus and outputs the stepped up voltage to a drive circuit for an electric actuator; and
a secondary power supply apparatus which is connected in parallel to a line between the step-up circuit and the drive circuit, into which electric power output from the step-up circuit is charged, and which supplements the supply of electric power to the drive circuit while using the charged electric power, the power supply control apparatus comprising;
charged amount detection means for detecting an amount of electricity charged into the secondary power supply apparatus; and
charge/discharge control means for controlling charging and discharging of the secondary power supply apparatus by controlling the step-up circuit to adjust a magnitude of the stepped-up voltage output therefrom on the basis of the detected charged amount and a target charged amount, wherein,when the detected charged amount is less than the target charged amount and a power consumption of the drive circuit is less than an available electric power output of the step-up circuit, the charge/discharge control means controls the step-up circuit to adjust the magnitude of the stepped-up voltage such that the stepped-up voltage becomes higher than a power supply voltage of the secondary power supply apparatus, andwhen the detected charged amount is less than the target charged amount and a power consumption of the drive circuit is equal to or greater than an available electric power output of the step-up circuit, the charge/discharge control means controls the step-up circuit to adjust the magnitude of the stepped-up voltage such that the stepped-up voltage becomes equal to the power supply voltage of the secondary power supply apparatus.
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Accused Products
Abstract
A power supply control section calculates a target charge/discharge current of a secondary power supply apparatus based on an actual charged amount and a target charged amount of the secondary power supply apparatus, and feedback-controls the stepped-up voltage of a step-up circuit such that an actual charge/discharge current detected by a secondary current sensor coincides with a target charge/discharge current. When the actual charged amount (1) is equal to or greater than the target charged amount, the target charge/discharge current is set to zero to prevent overcharging, and (2) is less than the target charged amount, a target charge current corresponding to a capacity margin of the step-up circuit is set to quickly charge the secondary power supply apparatus. When the output of the step-up circuit has no margin, the target charge/discharge current is set to zero.
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Citations
17 Claims
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1. A power supply control apparatus for controlling a primary power supply apparatus;
- a step-up circuit which steps up an output voltage of the primary power supply apparatus and outputs the stepped up voltage to a drive circuit for an electric actuator; and
a secondary power supply apparatus which is connected in parallel to a line between the step-up circuit and the drive circuit, into which electric power output from the step-up circuit is charged, and which supplements the supply of electric power to the drive circuit while using the charged electric power, the power supply control apparatus comprising;charged amount detection means for detecting an amount of electricity charged into the secondary power supply apparatus; and charge/discharge control means for controlling charging and discharging of the secondary power supply apparatus by controlling the step-up circuit to adjust a magnitude of the stepped-up voltage output therefrom on the basis of the detected charged amount and a target charged amount, wherein, when the detected charged amount is less than the target charged amount and a power consumption of the drive circuit is less than an available electric power output of the step-up circuit, the charge/discharge control means controls the step-up circuit to adjust the magnitude of the stepped-up voltage such that the stepped-up voltage becomes higher than a power supply voltage of the secondary power supply apparatus, and when the detected charged amount is less than the target charged amount and a power consumption of the drive circuit is equal to or greater than an available electric power output of the step-up circuit, the charge/discharge control means controls the step-up circuit to adjust the magnitude of the stepped-up voltage such that the stepped-up voltage becomes equal to the power supply voltage of the secondary power supply apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17)
- a step-up circuit which steps up an output voltage of the primary power supply apparatus and outputs the stepped up voltage to a drive circuit for an electric actuator; and
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15. A power supply control apparatus for controlling a primary power supply apparatus;
- a step-up circuit which steps up an output voltage of the primary power supply apparatus and outputs the stepped up voltage to a drive circuit for an electric actuator; and
a secondary power supply apparatus which is connected in parallel to a line between the step-up circuit and the drive circuit, into which electric power output from the step-up circuit is charged, and which supplements the supply of electric power to the drive circuit while using the charged electric power, the power supply control apparatus comprising;a detector that detects an amount of electricity charged into the secondary power supply apparatus; and a controller that controls charging and discharging of the secondary power supply apparatus by causing the step-up circuit to change a magnitude of the stepped-up voltage output therefrom on the basis of the detected charged amount and a target charged amount, wherein, when the detected charged amount is less than the target charged amount and a power consumption of the drive circuit is less than an available electric power output of the step-up circuit, the controller controls the step-up circuit to adjust the magnitude of the stepped-up voltage such that the stepped-up voltage becomes higher than a power supply voltage of the secondary power supply apparatus, and when the detected charged amount is less than the target charged amount and a power consumption of the drive circuit is equal to or greater than an available electric power output of the step-up circuit, the controller controls the step-up circuit to adjust the magnitude of the stepped-up voltage such that the stepped-up voltage becomes equal to the power supply voltage of the secondary power supply apparatus.
- a step-up circuit which steps up an output voltage of the primary power supply apparatus and outputs the stepped up voltage to a drive circuit for an electric actuator; and
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16. A power supply control system, comprising:
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a primary power supply apparatus; a step-up circuit which steps up an output voltage of the primary power supply apparatus and outputs the stepped up voltage to a drive circuit for an electric actuator; a secondary power supply apparatus which is connected in parallel to a line between the step-up circuit and the drive circuit, into which electric power output from the step-up circuit is charged, and which supplements the supply of electric power to the drive circuit while using the charged electric power; and a power supply control apparatus including, a detector that detects an amount of electricity charged into the secondary power supply apparatus; and a controller that controls charging and discharging of the secondary power supply apparatus by causing the step-up circuit to change a magnitude of the stepped-up voltage output therefrom on the basis of the detected charged amount and a target charged amount, wherein, when the detected charged amount is less than the target charged amount and a power consumption of the drive circuit is less than an available electric power output of the step-up circuit, the controller controls the step-up circuit to adjust the magnitude of the stepped-up voltage such that the stepped-up voltage becomes higher than a power supply voltage of the secondary power supply apparatus, and when the detected charged amount is less than the target charged amount and a power consumption of the drive circuit is equal to or greater than an available electric power output of the step-up circuit, the controller controls the step-up circuit to adjust the magnitude of the stepped-up voltage such that the stepped-up voltage becomes equal to the power supply voltage of the secondary power supply apparatus.
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Specification