Battery charger
First Claim
1. A battery charger without electrical contacts comprising:
- a primary coil magnetically coupled to a secondary coil housed in portable electronic equipment;
a high frequency power supply that supplies high frequency power to the primary coil; and
an external case that holds the primary coil and the high frequency power supply, wherein the high frequency power supply converts input power to high frequency power and supplies it to the primary coil, primary coil high frequency power is conveyed to the secondary coil by magnetic induction, and secondary coil AC is rectified to charge the battery pack contained in the portable electronic equipment,the battery charger without electrical contacts is provided with internal batteries that are charged by input power and supply power to the high frequency power supply, and with a charging circuit that charges the internal batteries with input power,the external case is formed as a flat panel having a given thickness providing storage space for internal batteries between a top plate and a bottom plate, internal batteries housed in the external case storage space are rectangular batteries and these rectangular batteries are housed in the storage space with their two opposing flat surfaces oriented parallel to the top plate and bottom plate, and a planar primary coil wound in a spiral shape is disposed in the external case storage space or in the top plate,wherein the internal batteries are charged by input power;
when no power is input, the high frequency power supply converts power supplied from the internal batteries to high frequency power and supplies it to the primary coil to charge the portable electronic equipment battery pack, andwherein the high frequency power supply contains a circuit to detect internal battery remaining capacity and supply DC power from the internal batteries to the high frequency power supply when remaining capacity is detected that is greater than a set capacity.
2 Assignments
0 Petitions
Accused Products
Abstract
High frequency power supplied to the primary coil from the high frequency power supply is transferred to the secondary coil by magnetic induction, and secondary coil AC is rectified to charge the battery pack housed in the portable electronic equipment. The battery charger is provided with internal batteries that are charged by input power and supply power to the high frequency power supply, and with a charging circuit to charge the internal batteries. The external case is provided with storage space between its top plate and bottom plate, and internal batteries, which are rectangular batteries, and a planar primary coil wound in a spiral shape are disposed in that storage space. The battery charger charges the internal batteries with input power, and when no power is input, internal battery power is converted to high frequency power and supplied to the primary coil to charge the battery pack.
69 Citations
22 Claims
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1. A battery charger without electrical contacts comprising:
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a primary coil magnetically coupled to a secondary coil housed in portable electronic equipment; a high frequency power supply that supplies high frequency power to the primary coil; and an external case that holds the primary coil and the high frequency power supply, wherein the high frequency power supply converts input power to high frequency power and supplies it to the primary coil, primary coil high frequency power is conveyed to the secondary coil by magnetic induction, and secondary coil AC is rectified to charge the battery pack contained in the portable electronic equipment, the battery charger without electrical contacts is provided with internal batteries that are charged by input power and supply power to the high frequency power supply, and with a charging circuit that charges the internal batteries with input power, the external case is formed as a flat panel having a given thickness providing storage space for internal batteries between a top plate and a bottom plate, internal batteries housed in the external case storage space are rectangular batteries and these rectangular batteries are housed in the storage space with their two opposing flat surfaces oriented parallel to the top plate and bottom plate, and a planar primary coil wound in a spiral shape is disposed in the external case storage space or in the top plate, wherein the internal batteries are charged by input power;
when no power is input, the high frequency power supply converts power supplied from the internal batteries to high frequency power and supplies it to the primary coil to charge the portable electronic equipment battery pack, andwherein the high frequency power supply contains a circuit to detect internal battery remaining capacity and supply DC power from the internal batteries to the high frequency power supply when remaining capacity is detected that is greater than a set capacity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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8. A battery charger without electrical contacts comprising:
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a primary coil magnetically coupled to a secondary coil housed in portable electronic equipment; a high frequency power supply that supplies high frequency power to the primary coil; and an external case that holds the primary coil and the high frequency power supply, wherein the high frequency power supply converts input power to high frequency power and supplies it to the primary coil, primary coil high frequency power is conveyed to the secondary coil by magnetic induction, and secondary coil AC is rectified to charge the battery pack contained in the portable electronic equipment, the battery charger without electrical contacts is provided with internal batteries that are charged by input power and supply power to the high frequency power supply, and with a charging circuit that charges the internal batteries with input power, the external case is formed as a flat panel having a given thickness providing storage space for internal batteries between a top plate and a bottom plate, internal batteries housed in the external case storage space are rectangular batteries and these rectangular batteries are housed in the storage space with their two opposing flat surfaces oriented parallel to the top plate and bottom plate, and a planar primary coil wound in a spiral shape is disposed in the external case storage space or in the top plate, wherein the internal batteries are charged by input power;
when no power is input, the high frequency power supply converts power supplied from the internal batteries to high frequency power and supplies it to the primary coil to charge the portable electronic equipment battery pack,wherein DC input terminals are provided in the external case, and the DC input terminals are connected to the high frequency power supply and charging circuit, wherein the DC input terminals are made up of AC adapter connection terminals and USB terminals, and the connection terminals and USB terminals are connected to the high frequency power supply and charging circuit, and wherein the AC adapter connection terminals, USB terminals, and internal batteries are connected to the power supply circuit of the high frequency power supply via a series connected switch and diode.
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Specification