# US 2014/0191584 A1 · Power transmission device, and power transmitter and power receiver for the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191584 A1 - Document ID: US20140191584A1 - Status: Published application - Kind: A1 - Application number: 14/148,196 - Filed: 2014-01-06 - Published: 2014-07-10 - Earliest claimed: 2013-01-07 - Assignees: Toshiba Tec Kabushiki Kaisha - Applicants: Toshiba Tec Kabushiki Kaisha - Inventors: Masakazu KATO - Web page: https://patentgrep.com/patent/US20140191584A1 ## CPC - H01F 38/14: Inductive couplings - H01F 27/2871: {Pancake coils} - H02J 7/731: {specially adapted for holding portable devices containing batteries (H02J7/751 takes precedence)} - H02J 50/10: using inductive coupling - H02J 50/12: of the resonant type - H02J 50/402: {the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas} - H02J 50/90: involving detection or optimisation of position, e.g. alignment - H02J 50/005: {Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract A power transmission device performs contactless power transmission from a power transmitter to a power receiver. The power transmitter includes a main body supporting the power receiver by first and second surfaces that are disposed adjacent to each other, a power transmitting coil disposed within the main body and having a first coil portion corresponding to the first surface and a second coil portion corresponding to the second surface, and a power source supplying power to the power transmitting coil. The power receiver includes a main body having a third surface and a fourth surface opposed to the first and second surfaces, respectively, and a power receiving coil disposed within the main body and having a third coil portion corresponding to the third surface and a fourth coil portion corresponding to the fourth surface. ## Claims ### Claim 1 A power transmission device for performing contactless power transmission from a power transmitter to a power receiver, wherein the power transmitter comprises: a main body supporting the power receiver by first and second surfaces of the power transmitter that are disposed adjacent to each other, a power transmitting coil disposed within the main body and having a first coil portion corresponding to the first surface and a second coil portion corresponding to the second surface, and a power source supplying power to the power transmitting coil, and the power receiver comprises: a main body having a third surface and a fourth surface opposed to the first and second surfaces, respectively, and a power receiving coil disposed within the main body and having a third coil portion corresponding to the third surface and a fourth coil portion corresponding to the fourth surface. ### Claim 2 (depends on 1) The power transmission device according to claim 1, wherein the power source of the power transmitter is an alternative current power source and is connected to the power transmitting coil through a resonance capacitor. ### Claim 3 (depends on 2) The power transmission device according to claim 2, wherein the power receiver includes a rectification circuit configured to rectify alternative current induced in the power receiving coil. ### Claim 4 (depends on 3) The power transmission device according to claim 3, wherein the rectification circuit is connected to the power receiving coil through a resonance capacitor. ### Claim 5 (depends on 1) The power transmission device according to claim 1, wherein the first and second surfaces are respectively substantially horizontal and substantially vertical surfaces. ### Claim 6 (depends on 1) The power transmission device according to claim 1, wherein the first surface is inclined with respect to the horizontal plane so that a junction of the first and second surface is lower than an opposite end of the first surface. ### Claim 7 (depends on 6) The power transmission device according to claim 6, wherein the second surface is orthogonal to the first surface and tilted with respect to the vertical plane. ### Claim 8 (depends on 1) The power transmission device according to claim 1, wherein the first and second coil portions are each planar coils and planes of the first and second coil portions are tilted relative to the horizontal and vertical planes, respectively. ### Claim 9 (depends on 1) The power transmission device according to claim 1, wherein the first and second coil portions are connected in series to the power source. ### Claim 10 (depends on 1) The power transmission device according to claim 1, wherein the first and second coil portions are connected in parallel to the power source. ### Claim 11 (depends on 1) The power transmission device according to claim 1, wherein the first and second coil portions are each independent coils, and the third and fourth coil portions are bent parts of one independent coil. ### Claim 12 A power transmitter for performing contactless power transmission to a power receiver, the power transmitter comprising: a main body having first and second surfaces that are disposed adjacent to each other and configured to respectively support third and fourth surfaces of a power receiver; a power transmitting coil disposed within the main body and having a first coil portion corresponding to the first surface and a second coil portion corresponding to the second surface; and a power source supplying power to the power transmitting coil. ### Claim 13 (depends on 12) The power transmitter according to claim 12, wherein the power source is an alternative current power source and is connected to the power transmitting coil through a resonance capacitor. ### Claim 14 (depends on 12) The power transmitter according to claim 12, wherein the first and second surfaces are respectively substantially horizontal and substantially vertical surfaces. ### Claim 15 (depends on 12) The power transmitter according to claim 12, wherein the first surface is inclined with respect to the horizontal plane so that a junction of the first and second surface is lower than an opposite end of the first surface. ### Claim 16 (depends on 15) The power transmitter according to claim 15, wherein the second surface is orthogonal to the first surface and tilted with respect to the vertical plane. ### Claim 17 (depends on 12) The power transmitter according to claim 12, wherein the first and second coil portions are each planar coils and planes of the first and second coil portions are tilted relative to the horizontal and vertical planes, respectively. ### Claim 18 (depends on 12) The power transmitter according to claim 12, wherein the first and second coil portions are connected in series to the power source. ### Claim 19 (depends on 12) The power transmitter according to claim 12, wherein the first and second coil portions are connected in parallel to the power source. ### Claim 20 A power receiver for receiving power by contactless power transmission from a power transmitter including a first main body having first and second surfaces that are disposed adjacent to each other, and a power transmitting coil disposed within the first main body and including a first coil portion corresponding to the first surface and a second coil portion corresponding to the second surface, the power receiver comprising: a second main body having a third surface configured to be supported by the first surface during the contactless power transmission from the power transmitter to the power receiver and a fourth surface configured to be supported by the second surface during the contactless power transmission from the power transmitter to the power receiver; a power receiving coil disposed within the second main body and including a third coil portion corresponding to the third surface and a fourth coil portion corresponding to the fourth surface; and a rectification circuit rectifying alternating current power induced in the power receiving coil.