# US 9,801,307 B2 · Capacitor module for a mobile working machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,801,307 B2 - Document ID: US9801307B2 - Status: Granted - Kind: B2 - Application number: 14/832,178 - Filed: 2015-08-21 - Published: 2016-03-03 - Granted: 2017-10-24 - Earliest claimed: 2014-08-26 - Assignees: Visedo Oy - Applicants: Visedo Oy - Inventors: Matti Iskanius; Tero Jarvelainen; Mikko Piispanen - Web page: https://patentgrep.com/patent/US9801307B2 ## CPC - H05K 7/20409: {Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing} - B60K 6/28: characterised by the electric energy storing means, e.g. batteries or capacitors - B60L 50/40: using propulsion power supplied by capacitors - H01G 2/02: Mountings - H01G 2/08: Cooling arrangements; Heating arrangements; Ventilating arrangements - H01G 4/228: Terminals - H01G 4/38: Multiple capacitors, i.e. structural combinations of fixed capacitors - H01G 9/0003: {Protection against electric or thermal overload; cooling arrangements; means for avoiding the formation of cathode films (H01G9/12 takes precedence)} - H01G 11/12: Stacked hybrid or EDL capacitors - H01G 11/74: Terminals, e.g. extensions of current collectors - H01G 11/78: Cases; Housings; Encapsulations; Mountings - B60Y 2200/92: Hybrid vehicles - B60Y 2306/05: Cooling - Y02E 60/13: Energy storage using capacitors - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y10S 903/907: Electricity storage, e.g. battery, capacitor - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - 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 - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A capacitor module includes at least one capacitor element (101) and a cooling structure (103) for cooling the capacitor element. The electrical terminals (102a, 102b) of the capacitor element are mechanically connected to the cooling structure to be in heat-conductive relations with the cooling structure so that at least one of the electrical terminals of the capacitor element is mechanically connected to the cooling structure via a flexible connection element (104a, 104b) made of electrically conductive material. The flexible connection element allows the corresponding electrical terminal to move with respect to the cooling structure when the distance (D) between the electrical terminals is changing because of changes in load and/or temperature, and/or because of ageing. ## Claims ### Claim 1 A capacitor module comprising: capacitor elements each comprising electrical terminals, a cooling structure for cooling the capacitor elements, the electrical terminals of the capacitor elements being mechanically connected to the cooling structure to be in heat-conductive relations with the cooling structure, flexible connection elements made of electrically conductive material, at least one of the electrical terminals of each of the capacitor elements being mechanically connected to the cooling structure via one of the flexible connection elements so as to allow the electrical terminal under consideration to move with respect to the cooling structure, an electrically insulating membrane between the cooling structure and one or more of the flexible connection elements, one or more connection plates made of electrically conductive material and arranged to provide galvanic connections between the capacitor elements so that one ends of the flexible connection elements are pressed between the connection plates and the electrically insulating membrane, and one or more insulator plates comprising electrically insulating material, and pressing devices for pressing the insulator plates towards the cooling structure so that the connection plates are pressed between the insulator plates and the ends of the flexible connection elements. ### Claim 2 (depends on 1) A capacitor module according to claim 1, wherein each of the flexible connection elements is a sheet of the electrically conductive material, a first end of each of the flexible connection elements having a galvanic contact with the corresponding electrical terminal, a second end of each of the flexible connection elements being mechanically connected to the cooling structure, and a middle portion of each of the flexible connection elements being arranged to bend in response to a situation in which the corresponding electrical terminal moves with respect to the cooling structure. ### Claim 3 (depends on 1) A capacitor module according to claim 1, wherein the one or more insulator plates comprise electrical conductors arranged to form galvanic contacts with the connection plates and to carry electrical signals indicative of voltages of the capacitor elements. ### Claim 4 (depends on 1) A capacitor module according to claim 1, wherein the cooling structure comprises: a first heat-sink element mechanically connected to first ones of the electrical terminals of the capacitor elements with first ones of the flexible connection elements, and a second heat-sink element mechanically connected to second ones of the electrical terminals of the capacitor elements with second ones of the flexible connection elements. ### Claim 5 (depends on 1) A capacitor module according to claim 1, wherein the cooling structure comprises at least one of the following: cooling channels for conducting cooling fluid, cooling fins for conducting heat to ambient air. ### Claim 6 (depends on 1) A capacitor module according to claim 1, wherein each of the capacitor elements is an electric double-layer capacitor. ### Claim 7 (depends on 2) A capacitor module according to claim 2, wherein the one or more insulator plates comprise electrical conductors arranged to form galvanic contacts with the connection plates and to carry electrical signals indicative of voltages of the capacitor elements. ### Claim 8 (depends on 2) A capacitor module according to claim 2, wherein the cooling structure comprises: a first heat-sink element mechanically connected to first ones of the electrical terminals of the capacitor elements with first ones of the flexible connection elements, and a second heat-sink element mechanically connected to second ones of the electrical terminals of the capacitor elements with second ones of the flexible connection elements. ### Claim 9 (depends on 2) A capacitor module according to claim 2, wherein the cooling structure comprises at least one of the following: cooling channels for conducting cooling fluid, cooling fins for conducting heat to ambient air. ### Claim 10 (depends on 2) A capacitor module according to claim 2, wherein each of the capacitor elements is an electric double-layer capacitor. ### Claim 11 (depends on 3) A capacitor module according to claim 3, wherein the cooling structure comprises: a first heat-sink element mechanically connected to first ones of the electrical terminals of the capacitor elements with first ones of the flexible connection elements, and a second heat-sink element mechanically connected to second ones of the electrical terminals of the capacitor elements with second ones of the flexible connection elements. ### Claim 12 (depends on 3) A capacitor module according to claim 3, wherein the cooling structure comprises at least one of the following: cooling channels for conducting cooling fluid, cooling fins for conducting heat to ambient air. ### Claim 13 (depends on 3) A capacitor module according to claim 3, wherein each of the capacitor elements is an electric double-layer capacitor. ### Claim 14 (depends on 4) A capacitor module according to claim 4, wherein the cooling structure comprises at least one of the following: cooling channels for conducting cooling fluid, cooling fins for conducting heat to ambient air. ### Claim 15 (depends on 4) A capacitor module according to claim 4, wherein each of the capacitor elements is an electric double-layer capacitor. ### Claim 16 (depends on 5) A capacitor module according to claim 5, wherein each of the capacitor elements is an electric double-layer capacitor. ### Claim 17 A mobile working machine comprising: a combustion engine, and an electromechanical power transmission chain between the combustion engine and one or more actuators of the mobile working machine, wherein the electromechanical power transmission chain comprises a capacitive energy-storage comprising at least one capacitor module that comprises: capacitor elements each comprising electrical terminals, a cooling structure for cooling the capacitor elements, the electrical terminals of the capacitor elements being mechanically connected to the cooling structure to be in heat-conductive relations with the cooling structure, flexible connection elements made of electrically conductive material, at least one of the electrical terminals of each of the capacitor elements being mechanically connected to the cooling structure via one of the flexible connection elements so as to allow the electrical terminal under consideration to move with respect to the cooling structure, an electrically insulating membrane between the cooling structure and one or more of the flexible connection elements, one or more connection plates made of electrically conductive material and arranged to provide galvanic connections between the capacitor elements so that one ends of the flexible connection elements are pressed between the connection plates and the electrically insulating membrane, and one or more insulator plates comprising electrically insulating material, and pressing devices for pressing the insulator plates towards the cooling structure so that the connection plates are pressed between the insulator plates and the ends of the flexible connection elements. ### Claim 18 (depends on 17) A mobile working machine according to claim 17, wherein the cooling structure of the capacitor module comprises cooling channels for conducting cooling fluid and the mobile working machine comprises a liquid cooling system connected to the cooling channels of the capacitor module. ### Claim 19 (depends on 18) A mobile working machine according to claim 18, wherein the liquid cooling system is configured to cool a hydraulic system of the mobile working machine.