DEVICE HOUSING A BATTERY AND CHARGING PAD
First Claim
1. A battery housing device comprising:
- an internal battery housed in the battery housing device; and
a receiving coil that supplies charging power to the internal battery by magnetically coupling with a transmitting coil of a charging pad,wherein the battery housing device further comprises a modulator circuit that modulates an impedance of the receiving coil with a digital signal,wherein the modulator circuit comprises;
a load circuit connected in parallel with the receiving coil, the load circuit having a switching device connected in series with an impedance modulating capacitor; and
a control circuit that switches the switching device of the load circuit ON and OFF in accordance with the digital signal.
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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. The device further includes a modulator circuit (61) that changes the impedance of the receiving coil according to internal battery data. The charging pad further includes a detection circuit (17) that detects receiving coil impedance changes to detect the battery data. The modulator circuit has a load circuit (62) connected in parallel with the receiving coil and has a series-connected switching device (64) and impedance modulating capacitor (63), and a control circuit (65) that switches the load circuit switching device ON and OFF according to the battery data. The modulator circuit switches the switching device (64) ON and OFF to transmit battery data to the charging pad.
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Citations
15 Claims
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1. A battery housing device comprising:
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an internal battery housed in the battery housing device; and a receiving coil that supplies charging power to the internal battery by magnetically coupling with a transmitting coil of a charging pad, wherein the battery housing device further comprises a modulator circuit that modulates an impedance of the receiving coil with a digital signal, wherein the modulator circuit comprises; a load circuit connected in parallel with the receiving coil, the load circuit having a switching device connected in series with an impedance modulating capacitor; and a control circuit that switches the switching device of the load circuit ON and OFF in accordance with the digital signal. - View Dependent Claims (2, 3, 4, 5, 15)
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6. A circuit of a battery housing device comprising:
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a modulator circuit that modulates an impedance of a receiving coil of the battery housing device with a digital signal, the receiving coil supplying charging power to an internal battery of the battery housing device by magnetically coupling with a transmitting coil of a charging pad, wherein the modulator circuit comprises; a load circuit connected in parallel with the receiving coil, the load circuit having a switching device connected in series with an impedance modulating capacitor; and a control circuit that switches the switching device of the load circuit ON and OFF in accordance with the digital signal. - View Dependent Claims (7, 8, 9, 10)
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11. A circuit of a battery housing device comprising:
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a control circuit that controls a modulator circuit to modulate an impedance of a receiving coil of the battery housing device with digital signal, the receiving coil supplying charging power to an internal battery of the battery housing device by magnetically coupling with a transmitting coil of a charging pad, wherein the control circuit switches a switching device of a load circuit ON and OFF in accordance with the digital signal, the load circuit being connected in parallel with the receiving coil, and the switching device of the load circuit being connected in series with an impedance modulating capacitor. - View Dependent Claims (12, 13, 14)
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Specification