# US 10,245,965 B2 · Transmission coil for the inductive transfer of energy > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,965 B2 - Document ID: US10245965B2 - Status: Granted - Kind: B2 - Application number: 15/509,980 - Filed: 2015-07-15 - Published: 2017-09-14 - Granted: 2019-04-02 - Earliest claimed: 2014-09-10 - Assignees: Robert Rosch GmbH - Applicants: Robert Bosch GmbH - Inventors: Felix Stewing; Tobias Diekhans - Web page: https://patentgrep.com/patent/US10245965B2 ## CPC - 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} - B60L 53/12: Inductive energy transfer - B60L 53/302: Cooling of charging equipment - B60L 53/31: Charging columns specially adapted for electric vehicles - H01F 27/24: Magnetic cores - H01F 27/28: Coils; Windings; Conductive connections - H01F 27/2876: {Cooling (cooling transformers and inductances in general H01F27/08)} - H01F 27/288: {Shielding} - H01F 27/36: Electric or magnetic shields or screens (movable for varying inductance H01F21/10) - H01F 27/363: {made of electrically conductive material} - H01F 27/40: Structural association with built-in electric component, e.g. fuse - H01F 38/14: Inductive couplings - H02J 50/12: of the resonant type - H02J 2105/37: exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - Y02T 90/12: Electric charging stations - Y02T 90/14: Plug-in electric vehicles - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract The invention relates to a transmission coil (10) configured for inductive energy transfer, comprising a carrier (17), a coil arrangement (11) having a plurality of turns (12), and a capacitance. It is thereby provided that the capacitance is formed of a plurality of capacitors (22), wherein each capacitor (22) is assigned to an individual turn (12) or to a group of at least two turns (12) of the coil arrangement (11), and together with the coil arrangement, the capacitors (22) are arranged on the carrier (17). The invention further relates to a stationary charging station and to a vehicle, each comprising such a transmission coil (10), and to a system for the inductive charging of vehicles. No drawing text to be translated. ## Claims ### Claim 1 A transmission coil (10) which is configured to inductively transfer energy, comprising a carrier (17), a coil arrangement (11) with a multiplicity of turns (12), and a capacitance, characterized in that the capacitance is formed by a multiplicity of capacitors (22), wherein one of the capacitors (22) is assigned to an individual turn (12) and another of the capacitors is assigned to a group of at least two turns (12) of the coil arrangement (11), and the capacitors (22) are arranged, together with the coil arrangement, on the carrier (17). ### Claim 2 (depends on 1) The transmission coil (10) as claimed in claim 1, characterized in that, furthermore, power electronics (20), which comprise a power inverter and/or a rectifier, are arranged on the carrier (17). ### Claim 3 (depends on 2) The transmission coil (10) as claimed in claim 2, characterized in that the power electronics (20) are configured to deactivate or activate individual turns (12) or individual groups of turns (12). ### Claim 4 (depends on 2) The transmission coil (10) as claimed in claim 2, characterized in that the turns (12) of the coil arrangement (11) are arranged in the form of concentric circles, a spiral path or a rectangular path, and the power electronics are located in a central region (13) of the coil arrangement (11). ### Claim 5 (depends on 1) The transmission coil (10) as claimed in claim 1, characterized in that the carrier (17) is configured to serve as a shield for stray magnetic fields. ### Claim 6 (depends on 1) The transmission coil (10) as claimed in claim 1, characterized in that the carrier (17) is configured to serve as a heat sink for the capacitors (22), the coil arrangement (11), a ferrite core (14) and/or power electronics (20). ### Claim 7 (depends on 1) The transmission coil (10) as claimed in claim 1, characterized in that the carrier (17) comprises ducts (30) which are configured to have a cooling medium flowing therethrough. ### Claim 8 (depends on 1) A fixed charging station which is configured to inductively charge vehicles, comprising at least one transmission coil (10) embodied as a primary transmission coil, as claimed in claim 1. ### Claim 9 (depends on 1) A vehicle which is configured to charge inductively, comprising at least one transmission coil (10) which is embodied as a secondary transmission coil, as claimed in claim 1. ### Claim 10 (depends on 1) A system for inductively charging vehicles, comprising at least one primary transmission coil and at least one secondary transmission coil, wherein the transmission coils (10) are embodied as claimed in claim 1. ### Claim 11 (depends on 1) The transmission coil as claimed in claim 1, wherein the capacitors are located in a central region (13) of the coil arrangement (11) and are surrounded by the coil arrangement. ### Claim 12 A transmission coil (10), comprising: a carrier (17); a ferrite core (14) disposed on one side of the carrier; power electronics (20) disposed in a central region on another side of the carrier; and a coil arrangement (11) arranged on the carrier, wherein the carrier (17) is configured to serve as a heat sink for capacitors (22), the coil arrangement (11), the ferrite core (14) and the power electronics (20). ### Claim 13 (depends on 12) The transmission coil (10) as claimed in claim 12, characterized in that one of the capacitors (22) is assigned to an individual turn (12) and another of the capacitors is assigned to a group of at least two turns (12) of the coil arrangement (11). ### Claim 14 (depends on 12) The transmission coil (10) as claimed in claim 12, characterized in that the carrier (17) is configured to serve as a shield for stray magnetic fields. ### Claim 15 (depends on 12) The transmission coil (10) as claimed in claim 12, characterized in that the carrier (17) comprises ducts (30) which are configured to have a cooling medium flowing therethrough. ### Claim 16 A transmission coil (10) configured to inductively transfer energy, comprising: a carrier (17), a coil arrangement (11) with a multiplicity of turns (12) arranged on the carrier (17), and a capacitance formed by multiple capacitors (22) arranged on the carrier (17), wherein at least one of the capacitors (22) is connected to at least two turns (12) of the coil arrangement (11). ### Claim 17 (depends on 16) The transmission coil as claimed in claim 16, wherein the capacitors are located in a central region (13) of the transmission coil (10) and are surrounded by the coil arrangement (11).