Abstract:
The invention relates to a liquid cooled cable arrangement for high-power fast charging of electric vehicles, comprising a charging connector (1) and a liquid cooled charging cable (2), wherein the liquid cooled charging cable (2) comprises several insulated positive conductors (3) and several insulated negative conductors (4) for supplying charging current and an inner fluid channel (6) and an outer fluid channel (7) surrounding the inner fluid channel (6), the inner fluid channel (6) and the outer fluid channel (7) together providing a supply path (8) and a return path (9) for liquid coolant, wherein the positive conductors (3) and the negative conductors (4) are arranged within the inner fluid channel (6), wherein the charging connector (1) comprises at least a positive contact (12) electrically connected to the positive conductors (3) by a first connecting element (13) and a negative contact (14) electrically connected to the negative conductor (4) by a second connecting element (15), wherein the first connecting element (13) and the second connecting element (15) each consist of a thermally conductive and electrically conductive material and are electrically isolated from each other, wherein the first connecting element (13) and the second connecting element (15) each are thermally connected to the inner channel (6) and the outer channel (7) of the charging cable (2), such that heat generated in the contacts (12, 14) during charging can be removed by the liquid coolant.
Abstract:
The invention relates to a liquid cooled cable arrangement for high-power fast charging of electric vehicles, comprising a charging connector (1) and a liquid cooled charging cable (2), whereby the liquid cooled charging cable (2) comprises a plurality of conductors (3) for supplying charging current and at least two fluid channels (4) for supply and return liquid coolant, the charging connector (1) comprises a plurality of bus bars (6) and a plurality of contacts (8), each one conductor (3) is electrically and thermally connected to one bus bar (6) and via the bus bar (6) to one contact (8), and the charging connector (1) comprises a second part (7) consisting of a thermally conductive and electrically insulating material to which the bus bars (6) are attached and to which the fluid channels (4) are thermally connected such that heat generated in the contacts (8) during charging can be removed by the liquid coolant, and/or the bus bars (6) comprise bus bar fluid channels (10) to which the fluid channels (4) are thermally connected such that heat generated in the contacts (8) during charging can be removed by the liquid coolant.
Abstract:
The invention relates to an electrical plug connector (1) for charging of electric vehicles, comprising a connector housing (2), a mating interface structure (3) supported and positioned within the connector housing (2), a positive contact pin (4) for connection with a positive conductor of a charging cable and a negative contact pin (5) for connection with a negative conductor of the charging cable, and a contact pin insert (6) supporting the positive contact pin (4) and/or the negative contact pin (5), wherein the positive contact pin (4) and/or the negative contact pin (5) are/is received and secured in position by the contact pin insert (6), and wherein the contact pin insert (6) is insertable and received within the mating interface structure (3).The invention further relates to a respective method.
Abstract:
The invention relates to a heavy-current charging cable (1) for charging an electric vehicle, comprising a central heavy-current wire (2) configured for serving as ground, the central heavy-current wire (2) comprising a central conductor (3) and extending in a longitudinal direction, a plurality of heavy-current power wires (5) configured for conducting positive and negative direct current, DC, each of said heavy-current power wires (5) comprising a power conductor (6) and a power wire insulation (7) surrounding said power conductor (6), the heavy-current power wires (5) extending parallel to the central wire, a liquid tight inner hose (8) extending in the longitudinal direction and surrounding the heavy-current central wire (2) and the heavy-current power wires (5) thereby defining a first hollow area (10) comprising liquid coolant to flow between the heavy-current central wire (2) and the heavy-cur- rent power wires (5) along the longitudinal direction, and a liquid tight outer hose (9) extending in the longitudinal direction and surrounding the inner hose (8) thereby defining a second hollow area (12) comprising liquid coolant to flow between the inner hose (8) and the outer hose (9) along the longitudinal direction.
Abstract:
The present disclosure relates to a method of building an insulation system around a naked conductor section of a power cable, which power cable has a conductor which includes the naked conductor section and which power cable comprises an insulation system already provided around a majority of the conductor. The insulation system comprises an inner semiconducting layer arranged around the conductor, an insulation layer arranged around the inner semiconducting layer, and an outer semiconducting layer arranged around the insulation layer, and which conductor has a naked conductor section. The method comprises: a) placing the naked conductor section in a mould, and b) moulding an insulation system around the naked conductor section, wherein the moulding of the insulation system involves injecting a first semiconducting compound into a first mould cavity to form an inner semiconducting layer around the naked conductor section, injecting an insulation compound into a second mould cavity to form an insulation layer around the inner semiconducting layer, and injecting a second semiconducting compound into a third mould cavity to form an outer semiconducting layer around the insulation layer.
Abstract:
The invention relates to a charging arrangement (1) for charging of electric vehicles, comprising a charging connector (2) and a charging cable (3), wherein the charging connector (2) comprises a connector body (4) with a first zone (5) and a second zone (6), the first zone (5) and the second zone (6) being separate from each other, the first zone (5) of the connector body (4) hosts a mating interface (7) with electrical contacts (8) for mating the charging connector (2) with a corresponding socket of an electric vehicle, the electrical contacts (8) being galvanically coupled to the charging cable (3), and the second zone (6) of the connector body (4) comprises a tube (9) in which the charging cable (3) is guided from an opening (11) of the tube (9) which is arranged on that side of the second zone (6) of the connector body (4) which is faced away from the first zone (5) of the connector body (4) to the electrical contacts (8) which are located in the first zone (5) of the connector body (4), and a handle (10) for grabbing the charging connector (4) with a human hand, the handle (10) being separate from the tube (9). According to the invention, the second zone (6) of the connector body (4) is Y-shaped wherein the tube (9) is formed by one upper leg and the lower of the Y and the handle (10) is formed by the other upper leg of the Y. In this way, a charging arrangement (1) for charging of electric vehicles is provided which is easy to use while showing high resistance to mechanical damage.
Abstract:
The invention relates to a heavy-current charging cable (1) for charging an electric vehicle, comprising a ground heavy-current wire (2) configured for serving as ground, the ground heavy-current wire (2) comprising a ground conductor (3) and extending in a longitudinal direction, at least two heavy-current power wires (5) configured for conducting positive and negative direct current, DC, each of said heavy- current power wires (5) comprising a power conductor (6) and a power wire insulation (7) surrounding said power conductor (6), the heavy-current power wires (5) extending parallel to the ground wire, a liquid tight inner sheath (8) extending in the longitudinal direction and surrounding the heavy-current power wires (5) thereby defining a first hollow area (10) between and around the heavy-current power wires (5) comprising liquid coolant to flow between the heavy-current power wires (5) along the longitudinal direction, whereby the liquid tight inner sheath (8) comprises a second hollow area (12) extending in the longitudinal direction, arranged adjacent to at least one of the heavy-current power wires (5) and comprising liquid coolant to flow within the second hollow area (12) along the longitudinal direction, and a liquid tight outer sheath (9) extending in the longitudinal direction and surrounding the inner sheath (8) and the ground heavy-current wire (2).
Abstract:
A wet capacitor is provided, and the use of an insulation fluid composition in such a capacitor. The capacitor comprises a package of a metal foil and a polymeric insulating film, or of a metallized polymeric film, wherein the insulation composition comprises a synthetic or natural aromatic oil and a polymer. The insulation composition is configured to undergo a thermo-reversible oil-to-gel transition at a predefined gel-point temperature. Further, methods of producing such wet capacitors are provided, optionally comprising additional filling materials, and methods of sealing leaks in such capacitors.
Abstract:
Flexible and bendable tubular electrical insulator (1) for use in a high voltage power transmission. The electrical insulator (1) has an electrically conductive carrier tube (4) that is covered by a first electrically conductive layer (5), an electrically insulating layer (6) and a second electrically conductive layer (7). The first conductive layer (5) and the insulating layer (6) are co-extruded onto the carrier tube (4) by way of co-extrusion such that the insulating layer (6) is arranged in between the first conductive layer (5) and the second conductive layer (7) in a radial direction, and such that the first conductive layer (5) is electrically connected to the carrier tube (4), wherein the first conductive layer adheres to the electrically insulating layer and wherein the electrically insulating layer adheres to the second conductive layer.
Abstract:
The invention relates to a heavy-current charging cable (1) for charging an electric vehicle, comprising a central heavy-current wire (2) configured for serving as ground, the central heavy-current wire (2) comprising a central conductor (3) and extending in a longitudinal direction, a plurality of heavy-current power wires (5) configured for conducting positive and negative direct current, DC, each of said heavy-current power wires (5) comprising a power conductor (6) and a power wire insulation (7) surrounding said power conductor (6), the heavy-current power wires (5) extending parallel to the central wire, a liquid tight inner hose (8) extending in the longitudinal direction and surrounding the heavy-current central wire (2) and the heavy-current power wires (5) thereby defining a first hollow area (10) comprising liquid coolant to flow between the heavy-current central wire (2) and the heavy-current power wires (5) along the longitudinal direction, and a liquid tight outer hose (9) extending in the longitudinal direction and surrounding the inner hose (8) thereby defining a second hollow area (12) comprising liquid coolant to flow between the inner hose (8) and the outer hose (9) along the longitudinal direction.