Non-contact power transfer apparatus
First Claim
1. A non-contact power transfer apparatus comprising:
- a main body of a power transmission unit having a power transmission coil;
a power reception unit having a power reception coil; and
a support base formed at a part of the main body for mounting the power reception unit detachably, the non-contact power transfer apparatus performing non-contact power transfer from the power transmission coil to the power reception coil using electromagnetic induction, whereinthe power transmission unit includes;
a resonant capacitor connected in series to the power transmission coil;
a power transmission circuit for supplying power to the power transmission coil via the resonant capacitor;
a current detection circuit for detecting a direct current of an input power source of the power transmission circuit;
unit detection means for detecting a mounting of the power reception unit on the support base; and
a first microcomputer having a control circuit for controlling the power transmission circuit, the current detection circuit and the unit detection means, andthe power reception unit includes;
a resonant capacitor connected in parallel with the power reception coil;
a rectification smoothing circuit for rectifying and smoothing power transferred to the power reception coil;
a series regulator for converting an output from the rectification smoothing circuit to a predetermined stabilized voltage;
a charge battery unit having a rechargeable battery;
a switching element for pulsing an output from the series regulator and pulse-charging the charge battery unit; and
a second microcomputer having a control circuit for controlling the series regulator and the switching element, andthe second microcomputer and on/off switching of the switching element are used to generate a plurality of pulse patterns.
3 Assignments
0 Petitions
Accused Products
Abstract
There is provided a non-contact power transfer apparatus performing non-contact power transfer from a power transmission coil L1 to a power reception coil L2 using electromagnetic induction. The non-contact power transfer apparatus has: a power transmission unit 10 including the power transmission coil L1, a power transmission circuit 1, a current detection circuit 3, unit detection means 4 and a first microcomputer 2 with a control circuit for controlling each of the circuits; and a power reception unit 30 including the power reception coil L2, a rectification smoothing circuit 31, a series regulator 34, a charge battery unit 40 with a rechargeable battery, a switching element 33 for pulse-charging and a second microcomputer 32 with a control circuit for controlling the series regulator and the switching element.
With this structure, the non-contact power transmission apparatus can be safe, reduce unnecessary power loss and prevent heat generation even when a foreign matter like metal is placed close thereto.
36 Citations
6 Claims
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1. A non-contact power transfer apparatus comprising:
- a main body of a power transmission unit having a power transmission coil;
a power reception unit having a power reception coil; and
a support base formed at a part of the main body for mounting the power reception unit detachably, the non-contact power transfer apparatus performing non-contact power transfer from the power transmission coil to the power reception coil using electromagnetic induction, whereinthe power transmission unit includes; a resonant capacitor connected in series to the power transmission coil; a power transmission circuit for supplying power to the power transmission coil via the resonant capacitor; a current detection circuit for detecting a direct current of an input power source of the power transmission circuit; unit detection means for detecting a mounting of the power reception unit on the support base; and a first microcomputer having a control circuit for controlling the power transmission circuit, the current detection circuit and the unit detection means, and the power reception unit includes; a resonant capacitor connected in parallel with the power reception coil; a rectification smoothing circuit for rectifying and smoothing power transferred to the power reception coil; a series regulator for converting an output from the rectification smoothing circuit to a predetermined stabilized voltage; a charge battery unit having a rechargeable battery; a switching element for pulsing an output from the series regulator and pulse-charging the charge battery unit; and a second microcomputer having a control circuit for controlling the series regulator and the switching element, and the second microcomputer and on/off switching of the switching element are used to generate a plurality of pulse patterns. - View Dependent Claims (2, 3, 4, 5, 6)
- a main body of a power transmission unit having a power transmission coil;
Specification