Charging Control Device and Charging Control Method
First Claim
1. A charging control device adapted to charge an electric storage unit of a charged device that includes a secondary side coil, and a secondary side circuit connected to the secondary side coil and configured to be connectable to the electric storage unit, the charging control device comprising:
- a voltage control circuit that controls an output voltage by means of a control signal;
a primary side circuit to which the output voltage of the voltage control circuit is applied, and which is provided with a primary side coil capable of electromagnetically inducing the secondary side coil; and
a control unit that includes means for sampling a primary side signal of the primary side circuit, and means for sampling a secondary side signal of the secondary side circuit, the control unit being connected to the voltage control circuit and outputting the control signal, whereinthe control unit samples the secondary side signal at a second cycle,samples the primary side signal at a first cycle shorter than the second cycle,estimates the secondary side signal at a timing of the primary side signal sampled this time, based on the secondary side signal, the primary side signal obtained when the secondary side signal is sampled, and the primary side signal sampled this time, andperforms feedback control of the control signal so that a predetermined signal of the secondary side circuit becomes constant.
1 Assignment
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Accused Products
Abstract
A charging control device includes a chopper circuit, a primary side coil, a primary side inverter circuit, and a control unit. A charged device includes a secondary side coil, and a secondary side rectifier circuit that is configured to be connectable to a storage cell. The control unit samples a secondary side signal at a second cycle, samples a primary side signal at a first cycle shorter than the second cycle, estimates the secondary side signal at a timing of the primary side signal sampled this time, based on the secondary side signal, the primary side signal obtained when the secondary side signal is sampled, and the primary side signal sampled this time, and performs feedback control of a control signal so that a predetermined signal of the secondary side rectifier circuit becomes constant.
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Citations
10 Claims
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1. A charging control device adapted to charge an electric storage unit of a charged device that includes a secondary side coil, and a secondary side circuit connected to the secondary side coil and configured to be connectable to the electric storage unit, the charging control device comprising:
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a voltage control circuit that controls an output voltage by means of a control signal; a primary side circuit to which the output voltage of the voltage control circuit is applied, and which is provided with a primary side coil capable of electromagnetically inducing the secondary side coil; and a control unit that includes means for sampling a primary side signal of the primary side circuit, and means for sampling a secondary side signal of the secondary side circuit, the control unit being connected to the voltage control circuit and outputting the control signal, wherein the control unit samples the secondary side signal at a second cycle, samples the primary side signal at a first cycle shorter than the second cycle, estimates the secondary side signal at a timing of the primary side signal sampled this time, based on the secondary side signal, the primary side signal obtained when the secondary side signal is sampled, and the primary side signal sampled this time, and performs feedback control of the control signal so that a predetermined signal of the secondary side circuit becomes constant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A charging control method which is performed by a charging control device adapted to charge an electric storage unit of a charged device that includes a secondary side coil, and a secondary side circuit connected to the secondary side coil and configured to be connectable to the electric storage unit, the charging control device comprising:
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a voltage control circuit that controls an output voltage by means of a control signal; a primary side circuit to which the output voltage of the voltage control circuit is applied, and which is provided with a primary side coil capable of electromagnetically inducing the secondary side coil; and a control unit that includes means for sampling a primary side signal of the primary side circuit, and means for sampling a secondary side signal of the secondary side circuit, the control unit being connected to the voltage control circuit and outputting the control signal, wherein the control unit samples the secondary side signal at a second cycle, samples the primary side signal at a first cycle shorter than the second cycle, estimates the secondary side signal at a timing of the primary side signal sampled this time, based on the secondary side signal, the primary side signal obtained when the secondary side signal is sampled, and the primary side signal sampled this time, and performs feedback control of the control signal so that a predetermined signal of the secondary side circuit becomes constant. - View Dependent Claims (10)
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Specification