Power supply circuit
First Claim
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1. A power supply circuit which is connected to a battery having an overcurrent protective device, said power supply circuit comprising:
- a capacitor which is connected in parallel to said battery to be charged by said battery; and
a restricting device which restricts an output current of said battery so that said output current of said battery is not interrupted by said overcurrent protective device while said capacitor is being charged with said battery.
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Abstract
A power supply circuit, which is connected to a battery having an overcurrent protective device, includes a capacitor which is connected in parallel to the battery to be charged by the battery, and a restricting device which restricts an output current of the battery so that the output current of the battery is not interrupted by the overcurrent protective device while the capacitor is being charged with the battery.
47 Citations
27 Claims
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1. A power supply circuit which is connected to a battery having an overcurrent protective device, said power supply circuit comprising:
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a capacitor which is connected in parallel to said battery to be charged by said battery; and
a restricting device which restricts an output current of said battery so that said output current of said battery is not interrupted by said overcurrent protective device while said capacitor is being charged with said battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 23, 24, 25, 26, 27)
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10. A power supply circuit which is connected to a battery having an overcurrent protective device, said power supply circuit comprising:
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a capacitor;
a first switch provided in a primary path for connecting said battery with said capacitor;
a second switch provided in an alternative path for connecting said battery with said capacitor;
a voltage detector which detects a terminal voltage across said capacitor; and
a charge control device which controls a switching operation of said first switch to intermittently charge said capacitor with said battery via said primary path in the case where said terminal voltage Vc across said capacitor is smaller than a predetermined threshold value;
wherein said charge control device switches said primary path to said alternative path to continuously charge said capacitor with said battery via said alternative path in the case where said terminal voltage across said capacitor exceeds said predetermined threshold value. - View Dependent Claims (11, 12)
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13. A power supply circuit which is connected to a battery having an overcurrent protective device, said power supply circuit comprising:
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a capacitor;
an adjusting condenser connected in parallel with said battery, said adjusting condenser having a capacitance so that when said capacitor is charged with said battery, said overcurrent protective device is not actuated to interrupt an output current of said battery to said power supply circuit;
a switching element with which said adjusting condenser can be connected to and disconnected from said capacitor; and
a charge control device which controls a switching operation of said switching element to intermittently charge said capacitor with power output from said battery and said adjusting condenser. - View Dependent Claims (14, 15)
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16. A power supply circuit which is connected to a battery having an overcurrent protective device, said power supply circuit comprising:
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a first capacitor which can be connected in parallel to said battery;
a second capacitor which can be connected in parallel to said first capacitor; and
a charge control device which controls a charging operation for charging said first capacitor and a charging operation for charging said second capacitors;
wherein said charge control device repeats a main charging operation and a relay charging operation alternately;
wherein said first capacitor is connected to said battery with said first capacitor being disconnected from said second capacitor, in order to charge said first capacitor with said battery in said main charging operation; and
wherein said first capacitor is connected to said second capacitor with said first capacitor being disconnected from said battery, in order to charge said second capacitor with power output from said first capacitor in said relay charging operation. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification