DEVICE HOUSING A BATTERY AND CHARGING PAD
First Claim
1. A device housing a battery and charging pad comprising:
- a device housing a battery having an receiving coil that supplies charging power to the internal battery; and
a charging pad having a transmitting coil that magnetically couples with the receiving coil in the device housing a battery and supplies charging power;
whereinthe device housing a battery is provided with a modulator circuit that modulates the impedance of the receiving coil with internal battery information;
the charging pad is provided with a detection circuit that detects battery information via the transmitting coil by detecting receiving coil impedance changes made by the modulator circuit;
the modulator circuit is provided with a load circuit connected in parallel with the receiving coil and having a series-connected impedance modulating capacitor and switching device, and a control circuit that switches the load circuit switching device ON and OFF with battery information; and
the modulator circuit switches the switching device ON and OFF to transmit battery information to the charging pad.
1 Assignment
0 Petitions
Accused Products
Abstract
A device housing a battery 50 includes a receiving coil 51, and a charging pad 10 includes a transmitting coil 11 that magnetically couples with, and supplies charging power to the receiving coil 51. The device further includes a modulator circuit 61 that changes the impedance of the receiving coil according to internal battery 52 data. The charging pad further includes a detection circuit 17 that detects receiving coil impedance changes to detect the battery data. The modulator circuit 61 has a load circuit 62 that is connected in parallel with the receiving coil 51 and has a series-connected switching device 64 and impedance modulating capacitor 63, and a control circuit 65 that switches the load circuit 62 switching device 64 ON and OFF according to the battery data. The modulator circuit 61 switches the switching device 64 ON and OFF to transmit battery data to the charging pad 10.
70 Citations
20 Claims
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1. A device housing a battery and charging pad comprising:
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a device housing a battery having an receiving coil that supplies charging power to the internal battery; and a charging pad having a transmitting coil that magnetically couples with the receiving coil in the device housing a battery and supplies charging power;
whereinthe device housing a battery is provided with a modulator circuit that modulates the impedance of the receiving coil with internal battery information; the charging pad is provided with a detection circuit that detects battery information via the transmitting coil by detecting receiving coil impedance changes made by the modulator circuit; the modulator circuit is provided with a load circuit connected in parallel with the receiving coil and having a series-connected impedance modulating capacitor and switching device, and a control circuit that switches the load circuit switching device ON and OFF with battery information; and the modulator circuit switches the switching device ON and OFF to transmit battery information to the charging pad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification