Charger and electronic apparatus stably supplying operating voltage
First Claim
Patent Images
1. A charger comprising:
- a power obtaining unit which charges a first power storage device with a voltage supplied from outside; and
a power transfer unit which transfers power stored in the first power storage device to a second power storage device having a capacitance larger than the first power storage device so as to store the power in the second power storage device,wherein the power obtaining unit includes;
an antenna which receives a wireless radio wave transmitted from an external apparatus; and
a rectifier circuit which rectifies current of the received wireless radio wave, andwherein the power transfer unit includes a voltage decrease reduction unit which reduces voltage decrease of the first power storage device per transfer of the power from the first power storage device to the second power storage device.
1 Assignment
0 Petitions
Accused Products
Abstract
A charger includes a power obtaining unit and a power transfer unit. The power obtaining unit charges a first power storage device with a voltage supplied from outside. The power transfer unit transfers power stored in the first power storage device to a second power storage device so as to store the power in the second power storage device. The power transfer unit includes a voltage decrease reduction unit. The voltage decrease reduction unit reduces voltage decrease of the first power storage device per transfer of the power from the first power storage device to the second power storage device. The second power storage device has a capacitance larger than the first power storage device.
6 Citations
18 Claims
-
1. A charger comprising:
-
a power obtaining unit which charges a first power storage device with a voltage supplied from outside; and a power transfer unit which transfers power stored in the first power storage device to a second power storage device having a capacitance larger than the first power storage device so as to store the power in the second power storage device, wherein the power obtaining unit includes; an antenna which receives a wireless radio wave transmitted from an external apparatus; and a rectifier circuit which rectifies current of the received wireless radio wave, and wherein the power transfer unit includes a voltage decrease reduction unit which reduces voltage decrease of the first power storage device per transfer of the power from the first power storage device to the second power storage device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14)
-
-
12. A charger comprising:
-
a power obtaining unit which charges a first power storage device with a voltage supplied from outside; and a power transfer unit which transfers power stored in the first power storage device to a second power storage device having a capacitance larger than the first power storage device so as to store the power in the second power storage device, by performing a chopping operation to perform the transfer intermittently, wherein the power transfer unit includes; an oscillator circuit; a switching unit which repeatedly switches connection between the first power storage device and the second power storage device on and off according to oscillation operation of the oscillator circuit; and a voltage decrease reduction unit which reduces voltage decrease of the first power storage device per transfer of the power from the first power storage device to the second power storage device according to the switching unit switching the connection between the first power storage device and the second power storage device on and off.
-
-
15. A charging method of a charger which obtains a voltage supplied from an external apparatus the charger comprising an antenna which receives a wireless radio wave transmitted from the external apparatus, and a rectifier circuit which rectifies current of the received wireless radio wave, the method comprising:
-
a power obtaining step of charging a first power storage device with a voltage supplied from the external apparatus; and a power transfer step of transferring power stored in the first power storage device to a second power storage device having a capacitance larger than the first power storage device so as to store the power in the second power storage device, wherein the power obtaining step includes; a receiving step of receiving, via the antenna, the wireless radio wave transmitted from the external apparatus; and a rectifying step of rectifying, by the rectifier circuit, current of the received wireless radio wave, and wherein the power transfer step includes a voltage decrease reduction step of reducing voltage decrease of the first power storage device per transfer of the power from the first power storage device to the second power storage device. - View Dependent Claims (16, 17, 18)
-
Specification