Coax cable for inductive charging

Patent metadata

Field	Value
Publication number	US-12224088-B2
Application number	US-202017608559-A
Country	US
Kind code	B2
Filing date	Apr 30, 2020
Priority date	May 15, 2019
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

A coaxial cable includes a non-conductive core and a first flexible copper conductor which surrounds the non-conductive core and is used as an inner conductor of the coaxial cable. Insulation is provided around the first flexible copper conductor. A second flexible copper conductor which surrounds the insulation and serves as an outer conductor of the coaxial cable.

First claim

The invention claimed is:

1. A coaxial cable, comprising:
a non-conductive core;
a first flexible copper conductor which surrounds the non-conductive core and serves as the inner conductor of the coaxial cable;
a first insulation around the first flexible copper conductor;
a second flexible copper conductor which surrounds the first insulation and serves as the outer conductor of the coaxial cable;
a shielding arranged around the second flexible copper conductor;
a second insulation between the non-conductive core and the first flexible copper conductor; and
a third insulation between the second flexible copper conductor and the shielding;
wherein the non-conductive core comprises plastics material or is formed of plastics material; and wherein the non-conductive core comprises or is formed of a heat-absorbing insulating material, wherein each of the first, second, and third insulations comprises a thermoplastic insulating plastics material or consists of a thermoplastic insulating plastics material.

2. The coaxial cable as claimed in claim 1 , wherein the non-conductive core comprises air or is formed of air.

3. The coaxial cable as claimed in claim 1 , wherein the first flexible copper conductor comprises a plurality of individual copper wires which are not insulated from one another or is formed of a plurality of individual copper wires which are not insulated from one another and/or wherein the second flexible copper conductor comprises a plurality of individual copper wires which are not insulated from one another or is formed of a plurality of individual copper wires which are not insulated from one another.

4. The coaxial cable as claimed in claim 1 , wherein the first flexible copper conductor comprises one or more copper braids or is formed of one or more copper braids and/or wherein the second flexible copper conductor comprises one or more copper braids or is formed of one or more copper braids.

5. The coaxial cable as claimed in claim 1 , further comprising at least one sensor, wherein at least the at least one sensor is in the form of a temperature sensor which is configured to detect the temperature of the coaxial cable.

6. The coaxial cable as claimed in claim 1 , further comprising at least one second sensor which is configured to monitor a state of the cable and to communicate that state to a user via an evaluation unit.

7. The coaxial cable as claimed in claim 5 , wherein the temperature sensor is in the form of a sensor wire introduced into the coaxial cable in the form of a sensor wire braided into the coaxial cable.

8. An electric vehicle charging device including the coaxial cable as claimed in claim 1 .

Assignees

• Leoni Kabel Gmbh

Inventors

• Stengl Sebastian
• Koenig Guenter

Classifications

• H01B7/324

  comprising temperature sensing means · CPC title

• H01B1/02

  mainly consisting of metals or alloys · CPC title

• B60L53/12 Primary

  Inductive energy transfer · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title