# US 10,766,374 B2 · Motor vehicle charging cable > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,766,374 B2 - Document ID: US10766374B2 - Status: Granted - Kind: B2 - Application number: 16/571,462 - Filed: 2019-09-16 - Published: 2020-03-19 - Granted: 2020-09-08 - Earliest claimed: 2018-09-17 - Assignees: Dr. Ing. h.c. F. Porsche Aktiengesellschaft - Applicants: Dr. Ing. h.c. F. Porsche Aktiengesellschaft - Inventors: Raoul Heyne; Jari Rönfanz - Web page: https://patentgrep.com/patent/US10766374B2 ## CPC - B60L 53/18: Cables specially adapted for charging electric vehicles - H01B 7/425: {the construction being bendable} - B60L 53/302: Cooling of charging equipment - H01B 7/2825: {using a water impermeable sheath} - H01B 7/423: {using a cooling fluid} - H01B 9/003: {including electrical control or communication wires} - H01B 9/006: {Constructional features relating to the conductors} - 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 - 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 - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A motor vehicle charging cable for direct current charging of an electric energy storage device of a vehicle, having a cable jacket, a first electric conductor for a first direct current phase and a second electric conductor for a second direct current phase. The electric conductors are surrounded on the outside by the cable jacket. The electric conductors each have a conductor sheath including an outer and an inner sheathing layer. The electric conductors each have conductor cores extending within the conductor sheath and forming a conductor core strand. The electric conductors each have a first coolant duct for cooling the respective conductor core strand from the inside, which duct is surrounded by the respective conductor cores. The electric conductors furthermore each have a second coolant duct for cooling the respective conductor core strand from the outside. The second coolant duct encloses the respective conductor cores. ## Claims ### Claim 1 A motor vehicle charging cable (10) for direct current charging of an electric energy storage device of a vehicle, said charging cable comprising: a cable jacket (13), a first electric conductor (11) for a first direct current phase; and a second electric conductor (12) for a second direct current phase, wherein an outside of both the first and second electric conductors (11, 12) is surrounded by the cable jacket (13), wherein the first and second electric conductors (11, 12) each have a conductor sheath (19) comprising an outer sheathing layer (19a) and an inner sheathing layer (19b), wherein the first and second electric conductors (11, 12) each have conductor cores (21) extending within the conductor sheath (19) and forming a conductor core strand (20), wherein the first and second electric conductors (11, 12) each have a first coolant-carrying duct (22) for cooling the respective conductor core strand (20) from an inside of the respective conductor core strand, which first coolant-carrying duct is surrounded by the respective conductor cores (21), wherein the first and second electric conductors (11, 12) furthermore each have a second coolant-carrying duct (23) for cooling the respective conductor core strand (20) from outside of the respective conductor core strand, said second coolant-carrying duct (23) enclosing the respective conductor cores (21), wherein the second coolant-carrying duct (23) comprises tubular coolant-carrying spacers (24) that are positioned between the conductor cores (21) of the conductor core strand (20) of the respective electric conductor (11, 12) and the inner sheathing layer (19b) of the conductor sheath (19) of the respective electric conductor (11, 12), wherein the tubular coolant-carrying spacers (24) divide the respective second coolant duct (23), through and around which coolant flows, rest against one another and rest against the inner sheathing layer (19b) of the conductor sheath (19) of the respective electric conductor (11, 12) and also rest directly against the conductor cores (21) for cooling the conductor cores (21). ### Claim 2 (depends on 1) The motor vehicle charging cable as claimed in claim 1, wherein the cable is configured to permit the flow of coolant through the first coolant-carrying duct (22) of the respective electric conductor (11, 12) in a first direction and permit the flow of fluid through the second coolant-carrying duct (23) of the respective electric conductor (11, 12) in an opposite, second direction, wherein the first and the second coolant-carrying duct (22, 23) of the respective electric conductor (11, 12) define a conductor-specific cooling circuit of the respective electric conductor (11, 12). ### Claim 3 (depends on 2) The motor vehicle charging cable as claimed in claim 2, wherein the first coolant-carrying duct (22) defines a coolant feed, and the second coolant-carrying duct (23) defines a coolant return. ### Claim 4 (depends on 1) The motor vehicle charging cable as claimed in claim 1, wherein respectively adjacent tubular spacers (24) rest loosely against one another. ### Claim 5 (depends on 1) The motor vehicle charging cable as claimed in claim 1, wherein the tubular spacers (24) rest with an adhesive action against the inner sheathing layer (19b) of the conductor sheath (19) of the respective electric conductor (11, 12), wherein the inner sheathing layer (19b) is coated with an adhesive agent on a side facing the spacers (24). ### Claim 6 (depends on 1) The motor vehicle charging cable as claimed in claim 1, wherein the conductor cores (21), which each comprise a plurality of core wires (25), are twisted around the first coolant-carrying duct (22). ### Claim 7 (depends on 1) The motor vehicle charging cable as claimed in claim 1, wherein the tubular spacers (24) are twisted around the conductor cores (21). ### Claim 8 (depends on 1) The motor vehicle charging cable as claimed in claim 1, wherein the inner sheathing layer (19b) of the conductor sheath (19) comprises a coolant-impermeable aluminum composite foil. ### Claim 9 (depends on 8) The motor vehicle charging cable as claimed in claim 8, wherein the coolant-impermeable aluminum composite foil is an aluminum polyethylene terephthalate composite foil. ### Claim 10 (depends on 1) The motor vehicle charging cable as claimed in claim 1, further comprising: a control conductor (16) having a plurality of control lines (17), a ground conductor (15) and a plurality of filling elements (18) arranged within the cable jacket (13) in addition to the first and second electric conductors (11, 12), wherein the filling elements (18) fill out a free space between the cable jacket (13), the electric conductors (11, 12), the control conductor (16) and the ground conductor (15) in such a way that both the control conductor (16) and the ground conductor (15) rest against the electric conductors (11, 12). ### Claim 11 (depends on 10) The motor vehicle charging cable as claimed in claim 10, wherein the electric conductors (11, 12) also rest against one another. ### Claim 12 (depends on 10) The motor vehicle charging cable as claimed in claim 10, wherein the control conductor (16) and the ground conductor (15) rest loosely against the electric conductors (11, 12). ### Claim 13 (depends on 12) The motor vehicle charging cable as claimed in claim 12, wherein the electric conductors (11, 12) also rest loosely against one another.