# US 2010/0164431 A1 · Recharging system and electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0164431 A1 - Document ID: US20100164431A1 - Status: Published application - Kind: A1 - Application number: 12/417,662 - Filed: 2009-04-03 - Published: 2010-07-01 - Earliest claimed: 2008-12-29 - Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.; Hon Hai Precision Industry Co., Ltd. - Inventors: Kim-Yeung Sip; Xiong Li - Web page: https://patentgrep.com/patent/US20100164431A1 ## CPC - H02J 7/70: characterised by the mechanical construction - H02J 50/10: using inductive coupling - H02J 50/90: involving detection or optimisation of position, e.g. alignment - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract A recharging system for a rechargeable battery in an electronic device includes a receiver and a power supply. The receiver is fixed to a surface of a casing of the electronic device. The receiver includes a receiving coil connected to the rechargeable battery. The receiving coil is a planar spiral coil substantially parallel to the surface of the casing of the electronic device. The power supply includes a base and a source coil attached to a surface of the base corresponding to the receiving coil, and the source coil is a planar spiral coil and capable of magnetically coupling to the receiving coil of the receiver. ## Claims ### Claim 1 A recharging system for recharging a rechargeable battery in an electronic device, the recharging system comprising: a receiver fixed to a surface of a casing of the electronic device, the receiver comprising a receiving coil connected to the rechargeable battery, the receiving coil being a planar spiral coil substantially parallel to the surface of the casing of the electronic device; and a power supply comprising a base and a source coil attached to a surface of the base corresponding to the receiving coil, the source coil being a planar spiral coil and capable of magnetically coupling to the receiving coil of the receiver. ### Claim 2 (depends on 1) The recharging system as claimed in claim 1, wherein the receiver further comprises a first core disposed inside the receiving coil, and the power supply further comprises a second core disposed inside the source coil. ### Claim 3 (depends on 1) The recharging system as claimed in claim 1, wherein the receiver further comprises a plurality of electromagnets surrounding the receiving coil, and the power supply further comprises a plurality of positioning portions surrounding the source coil corresponding to the plurality of electromagnets, the positioning portions being capable of being attracted by the plurality of electromagnets. ### Claim 4 (depends on 3) The recharging system as claimed in claim 3, wherein the positioning portions are electromagnets or permanent magnets. ### Claim 5 (depends on 3) The recharging system as claimed in claim 3, wherein the positioning portions are made of a material selected from the group consisting of iron, cobalt, nickel and combinations thereof. ### Claim 6 (depends on 1) The recharging system as claimed in claim 1, wherein the casing of the electronic device is made of electrical insulating material, and the receiving coil is secured on the surface of the casing directly. ### Claim 7 (depends on 1) The recharging system as claimed in claim 1, wherein the receiver further comprises a base, the base of the receiver comprising a first surface attached to the surface of the casing of the electronic device, and a second surface opposite to the first surface, the receiving coil being attached to the second surface of the base of the receiver. ### Claim 8 (depends on 1) The recharging system as claimed in claim 1, wherein the receiver is fixed to an inner surface of the casing of the electronic device. ### Claim 9 (depends on 1) The recharging system as claimed in claim 1, wherein the casing defines a receiving space on an outer surface of the casing, and the receiver is received in the receiving space. ### Claim 10 An electronic device capable of using a rechargeable battery, comprising: a casing; a battery housing received in the casing for receiving the rechargeable battery, the battery housing comprising two electrical contacts for electrically connecting two electrodes of the rechargeable battery; and a receiver fixed to a surface of the casing of the electronic device, the receiver comprising a receiving coil, the two ends of the receiving coil being connected to the two electrical contacts of the battery housing respectively, the receiving coil being a planar spiral coil substantially parallel to the surface of the casing of the electronic device, the receiving coil configured for inductively coupling to a magnetic field produced by a power supply. ### Claim 11 (depends on 10) The electronic device as claimed in claim 10, wherein the receiver further comprises a first core disposed inside the receiving coil. ### Claim 12 (depends on 10) The electronic device as claimed in claim 10, wherein the receiver further comprises a plurality of electromagnets surrounding the receiving coil. ### Claim 13 (depends on 10) The electronic device as claimed in claim 10, wherein the casing of the electronic device is made of electrical insulating material, and the receiving coil is secured on the surface of the casing directly. ### Claim 14 (depends on 10) The electronic device as claimed in claim 10, wherein the receiver further comprises a base, the base of the receiver comprising a first surface attached to the surface of the casing of the electronic device, and a second surface opposite to the first surface, the receiving coil being attached to the second surface of the base of the receiver. ### Claim 15 (depends on 10) The electronic device as claimed in claim 10, wherein the receiver is fixed to an inner surface of the casing of the electronic device. ### Claim 16 (depends on 10) The electronic device as claimed in claim 10, wherein the casing defines a receiving space on an outer surface of the casing, and the receiver is received in the receiving space. ### Claim 17 A recharging system, comprising: an electronic device, comprising: a casing; a battery housing received in the casing for receiving a rechargeable battery, the battery housing comprising two electrical contacts for electrically connecting two electrodes of the rechargeable battery; and a receiver fixed to a surface of the casing of the electronic device, the receiver comprising a receiving coil, the two ends of the receiving coil being connected to the two electrical contacts of the battery housing respectively, the receiving coil being a planar spiral coil substantially parallel to the surface of the casing of the electronic device, the receiving coil configured for inductively coupling to a magnetic field produced by a power supply, and a power supply comprising a base and a source coil attached to a surface of the base corresponding to the receiving coil, the source coil being a planar spiral coil and capable of magnetically coupling to the receiving coil of the receiver. ### Claim 18 (depends on 17) The recharging system as claimed in claim 17, wherein the receiver further comprises a first core disposed inside the receiving coil, and the power supply further comprises a second core disposed inside the source coil. ### Claim 19 (depends on 17) The recharging system as claimed in claim 17, wherein the receiver further comprises a plurality of electromagnets surrounding the receiving coil, and the power supply further comprises a plurality of positioning portions surrounding the source coil corresponding to the plurality of electromagnets, the positioning portions being capable of being attracted by the plurality of electromagnets. ### Claim 20 (depends on 17) The recharging system as claimed in claim 17, wherein the receiver is fixed to an inner surface of the casing of the electronic device.