Non-contact electric power transmission apparatus
First Claim
1. A non-contact electric power transmission apparatus having:
- a power supplying unit main body containing a power supplying coil for non-contact electric power transmission;
a power receiving unit containing a power receiving coil for non-contact electric power transmission; and
a supporting base for detachably mounting the power receiving unit, formed in a portion of the power supplying unit main body, the apparatus transmitting electric power from the power supplying coil to the power receiving coil in a non-contact manner using electromagnetic induction, wherein;
the power receiving unit has a modulation circuit which outputs a recognition signal upon receiving electric power from the power supplying coil at the power receiving coil;
the power supplying unit has detecting means, a demodulation circuit, a recognition circuit, and a timer circuit;
the detecting means detects that the power receiving unit is placed on the supporting base of the power supplying unit to start electric power transmission from the power supplying coil, the recognition signal from the modulation circuit being detected as voltage change in the power supplying coil;
the demodulation circuit demodulates the recognition signal to check whether or not it is a predetermined recognition signal, and if it is not the predetermined recognition signal, an output signal is applied to the timer circuit; and
the timer circuit stops electric power transmission for a predetermined time period and thereafter restarts by checking again.
3 Assignments
0 Petitions
Accused Products
Abstract
The object is to provide a safe non-contact electric power transmission apparatus reducing unnecessarily consumed electric power, while intermittently-operated or otherwise restrained electric power transmission is not performed, and heat is not generated when a metal such as a foreign object is placed. In a non-contact electric power transmission apparatus having: a power supplying unit 10 main body containing a power supplying coil L1 for non-contact electric power transmission; a power receiving unit 50 containing a power receiving coil L50 for non-contact electric power transmission; and a supporting base 20 for detachably mounting the power receiving unit 50, formed in a portion of the power supplying unit 10 main body, electric power being transmitted from the power supplying coil L1 to the power receiving coil L50 in a non-contact manner using electromagnetic induction, the power receiving unit 50 has a modulation circuit 52 which outputs a recognition signal upon receiving electric power from the power supplying coil L1 at the power receiving coil L50, and the power supplying unit 10 has a electric power transmitting circuit 1, a control circuit 2, detecting means 3, a demodulation circuit 4, a recognition circuit 5, and a timer circuit 6.
37 Citations
5 Claims
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1. A non-contact electric power transmission apparatus having:
- a power supplying unit main body containing a power supplying coil for non-contact electric power transmission;
a power receiving unit containing a power receiving coil for non-contact electric power transmission; and
a supporting base for detachably mounting the power receiving unit, formed in a portion of the power supplying unit main body, the apparatus transmitting electric power from the power supplying coil to the power receiving coil in a non-contact manner using electromagnetic induction, wherein;the power receiving unit has a modulation circuit which outputs a recognition signal upon receiving electric power from the power supplying coil at the power receiving coil; the power supplying unit has detecting means, a demodulation circuit, a recognition circuit, and a timer circuit; the detecting means detects that the power receiving unit is placed on the supporting base of the power supplying unit to start electric power transmission from the power supplying coil, the recognition signal from the modulation circuit being detected as voltage change in the power supplying coil; the demodulation circuit demodulates the recognition signal to check whether or not it is a predetermined recognition signal, and if it is not the predetermined recognition signal, an output signal is applied to the timer circuit; and the timer circuit stops electric power transmission for a predetermined time period and thereafter restarts by checking again. - View Dependent Claims (2, 3, 4, 5)
- a power supplying unit main body containing a power supplying coil for non-contact electric power transmission;
Specification