Motor vehicle charging cable for DC voltage charging an electrical energy storage device of a motor vehicle includes a first electrical conductor for a first DC voltage phase, and a second electrical conductor for a second DC voltage phase. The first electrical conductor and the second electrical conductor each have an insulation layer and conductor cores which run in the respective insulation layer and form a conductor core strand. The first and the second electrical conductor each have a first coolant duct for cooling the respective conductor core strand from the inside, which first coolant duct is surrounded by the respective conductor cores. The first and the second electrical conductor each further have a second coolant duct for cooling the respective conductor core strand from the outside, which second coolant duct surrounds the respective conductor cores.

A power cable includes an electric conductor; an electrical insulation layer surrounding the electrical conductor; a cooling system including a cooling duct substantially parallel to the electrical conductor along a power cable longitudinal axis and configured to flow a cooling fluid; a carbon allotrope layer in direct contact with the electrical conductor, where the carbon allotrope layer is provided between the electric conductor and the cooling duct; and a cable jacket enclosing the electric conductor, the electrical insulation layer, and the cooling system.

A liquid cooled charging cable system may be provided. The liquid cooled charging cable system may comprise a source, a load, a liquid cooled charging cable, and a cooling device. The liquid cooled charging cable may connect the source to the load, and may supply electric energy from the source to the load. The liquid cooled charging cable may comprise a supply conductor and a return conductor. The cooling device may pump a coolant around the supply conductor and the return conductor where the supply conductor and the return conductor may be immersed in the coolant.

An evaluation method is for evaluating a charging connector in coolability by connecting an evaluation jig to the charging connector, the charging connector including a pair of male terminals and a bottom wall, the evaluation jig including a pair of female terminals, the pair of female terminals being connected to the pair of male terminals in evaluating the charging connector in coolability. The method comprises: connecting the pair of female terminals to the pair of male terminals; and adjusting a connection state of the terminals so that contact resistance between the terminals falls within a prescribed range. In the step of adjusting, a resistance between a point of 4.5 mm of the male terminal from a surface of the bottom wall and a point of 43 mm of the female terminal from the surface of the bottom wall is measured as the contact resistance.

An evaluation method is a method for evaluating a charging connector in coolability by connecting an evaluation jig to the charging connector, the charging connector including a pair of male terminals coolable with a coolant, the evaluation jig including a pair of female terminals, the pair of female terminals being connected to the pair of male terminals in evaluating the charging connector in coolability. The method comprises: connecting the pair of female terminals to the pair of male terminals; adjusting a connection state between the male terminal and the female terminal such that contact resistance between the terminals is 0.06 m or more and 0.15 m or less; and after the adjusting, evaluating the coolability depending on whether the male and female terminals have a temperature of 90 C. or lower when a charging current of 400 A is supplied to the terminals for 30 minutes.

An evaluation jig comprises a pair of female terminals connectable to a pair of male terminals of a charging connector, and an adjustment member that can adjust contact resistance of the female terminal and the male terminal. The female terminal is reducible in diameter. The adjustment member can apply an external force to the female terminal to reduce the female terminal in diameter.

Fluidic channels and pumps for active cooling of cables are described. One cable assembly includes a conductor having a length between a first end of the cable and a second end of the cable and a fluidic channel structure that at least partially surrounds the conductor along the length of the conductor. A first pump connector is coupled to a first end of the fluidic channel structure and a second pump connector is coupled to a second end of the fluidic channel structure. Motion of liquid metal, when pumped through the fluidic channel structure, distributes heat away from the conductor.

The invention is directed to a cable assembly (10, 10a-b), comprising a cable (10, 10a-b) with a cable hose (11, 11a-b) and at least one conductor (12, 12a-f) arranged therein. The cable hose (11, 11a-b) is spaced a distance apart from the conductor (12) forming a first interstitial space (15, a-b) between the at least conductor (12) and the cable hose (11, 11a-b). At least one tube (20, 20a-b) for conveying of a cooling fluid (21), and a connector (30) comprising at least one contact member (31) interconnected to the at least one conductor (12) and a chamber (32). Said chamber (32) comprises a first port (33) which is interconnected to the first interstitial space between the at least one conductor (12, 12a-f) and the cable hose (11, 11a-b) and a second port (34a, 34a-b) which is interconnected to the at least one tube (20, 20a-b).

A power cable system including a power cable, and an evaporator pipe assembly extending along the power cable, wherein the evaporator pipe assembly having an inner liquid pipe including a pressurised liquid refrigerant, and an outer gas pipe arranged outside of and coaxially with the inner liquid pipe, wherein the inner liquid pipe is provided with a plurality of openings distributed along its length, and wherein the openings provide fluid communication between the inner liquid pipe and the outer gas pipe, allowing part of the pressurised liquid refrigerant to escape from the inner liquid pipe to the outer gas pipe and evaporate in the outer gas pipe, thereby cooling the power cable.

An onboard charging system includes an onboard battery, a vehicle-side coupling unit, a heat exchanger, a controller, and a charger. The onboard battery that is configured to be mounted on a vehicle and used to drive the vehicle. The vehicle-side coupling unit that is configured to make a charging current path to an outside-vehicle power feeding apparatus by being coupled to an apparatus-side coupling unit of the outside-vehicle power feeding apparatus. The heat exchanger that is provided in the vehicle-side coupling unit and configured to perform heat exchange between the vehicle-side coupling unit and the apparatus-side coupling unit. The controller that is configured to perform ON/OFF control of a function of the heat exchange performed by the heat exchanger. The charger that is configured to charge the onboard battery by using the charging current path.