Wirelessly chargeable battery apparatus
Embodiments of the present disclosure describe systems, methods, apparatuses for wirelessly charging handheld and consumer electronics in wireless power delivery environments. In some embodiments, techniques are described for retrofitting wireless power receivers into existing devices e.g., through wirelessly powered battery apparatuses. For example, the apparatuses discussed herein allow any device that accepts standard form factor batteries to be transformed into a wirelessly powered device. The wirelessly rechargeable battery apparatuses can be applied to any battery form factor including custom or semi-custom battery form factors for mobile phones, laptops, tablet computers, etc. Advantageously, among other benefits, the apparatuses discussed herein overcome the product integration challenges discussed above.
1. A wirelessly chargeable battery apparatus comprising:
a circuit configured to convert an alternating current signal induced by an antenna from a wireless power signal to a direct current (DC) signal for transmission to an energy storage device; and
a voltage configuration module coupled to the circuit, and configured to vary an output voltage of the wirelessly chargeable battery apparatus according to a configuration of the energy storage device, the configuration including a number of batteries in parallel.
2. The apparatus of claim 1 further comprising means coupled to the circuit for transmitting the DC signal to the energy storage device.
3. The apparatus of claim 1 further comprising the antenna.
4. The apparatus of claim 3 , wherein the antenna comprises a three-dimensional antenna constructed of at least one of: a thin film, a copper tape, and a printed metal.
5. The apparatus of claim 1 , further comprising the energy storage device coupled to the circuit.
6. The apparatus of claim 5 , wherein the energy storage device is couplable to the antenna to provide a ground plane for the antenna.
7. The apparatus of claim 5 , further comprising a dielectric configured to isolate the energy storage device from the antenna.
8. The apparatus of claim 7 , wherein the dielectric is constructed of a flexible material.
9. The apparatus of claim 1 further comprising a housing for containing the circuit.
10. The apparatus of claim 9 , further comprising one or more reflector or director planes situated on at least one of: an inner surface, and an outer surface, of the housing.
11. The apparatus of claim 10 , wherein at least one of the one or more reflector or director planes is constructed using: a thin film, copper tape, or a printed metal.
12. The apparatus of claim 9 further comprising the energy storage device contained within the housing and coupled to the circuit.
13. The apparatus of claim 9 , wherein the housing comprises a housing assembly having two detachable portions.
14. The apparatus of claim 9 , wherein the housing is formed of a material that is at least partially transparent to the wireless power signal.
15. The apparatus of claim 9 further comprising the antenna situated around at least one of: an inner perimeter, and an outer perimeter, of the housing.
16. The apparatus of claim 9 further comprising the antenna contained within the housing.
17. The apparatus of claim 1 , wherein the circuit at least partially comprises a flexible printed circuit board.
18. A wirelessly chargeable battery apparatus comprising a circuit configured to:
convert an alternating current signal induced by an antenna from a wireless power signal to a direct current (DC) signal for transmission to an energy storage device; and
configure the antenna with a polarity mode selected, based on a power level of the DC signal from among a plurality of polarity modes, to maximize the power level of the DC signal.
19. The wireless chargeable battery apparatus of claim 18 , wherein the circuit is further configured to measure the power level of the DC signal.
20. A method of operating a wirelessly charegable battery apparatus, the method comprising:
converting, by a circuit of the wirelessly chargeable battery apparatus, an alternating current signal induced by an antenna from a wireless power signal to a direct current signal for transmission to an energy storage device; and
varying, by a voltage configuration module coupled to the circuit, an output voltage of the wirelessly chargeable battery apparatus according to a configuration of the energy storage device, the configuration including a number of batteries in parallel.