# US 11,309,122 B2 · Wireless charging coil structure with function of heat dissipation

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- Number: US 11,309,122 B2
- Document ID: US11309122B2
- Status: Granted
- Kind: B2
- Application number: 16/330,063
- Filed: 2016-08-12
- Published: 2019-07-25
- Granted: 2022-04-19
- Earliest claimed: 2016-08-12
- Assignees: Holygo Corporation
- Applicants: Holygo Corporation
- Inventors: Chien-Te Wu
- Web page: https://patentgrep.com/patent/US11309122B2

## CPC

- H01F 27/2876: {Cooling (cooling transformers and inductances in general H01F27/08)}
- H01F 5/00: Coils (superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00)
- H01F 27/16: Water cooling
- H01F 27/18: by evaporating liquids
- H01F 27/2847: {Sheets; Strips (H01F27/2866 takes precedence)}
- H01F 38/14: Inductive couplings
- H02J 50/10: using inductive coupling
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY

## Abstract

A wireless charging coil structure with a function of heat dissipation comprises a first connecting terminal, a second connecting terminal and a coil. The coil is disposed between the first connecting terminal and the second connecting terminal, and configured to transmit a signal between the first connecting terminal and the second connecting terminal. The coil comprises a heat-pipe segment and a transmission segment electrically and heat-conductively connected with each other. The transmission segment has a predetermined thickness, the heat-pipe segment encircles an accommodating space, and a heat-dissipating medium is disposed in the accommodating space.

## Claims

### Claim 1

A wireless charging coil structure with a function of heat dissipation, characterized in comprising:
a first connecting terminal and a second connecting terminal; and
a coil disposed between the first connecting terminal and the second connecting terminal and configured to transmit a signal between the first connecting terminal and the second connecting terminal, with the coil comprising a heat-pipe segment and a transmission segment electrically and heat-conductively connected with each other, the transmission segment, having a predetermined thickness, and the heat-pipe segment encircling an accommodating space, and a heat-dissipating medium disposed in the accommodating space,
wherein a length of the transmission segment is longer than a length of the heat-pipe segment.

### Claim 2 (depends on 1)

The wireless charging coil structure with the function of the heat dissipation according to claim 1, characterized in that the heat-pipe segment comprises a bending portion, and a radius of curvature of the bending portion is between 3 times and 5 times a width of the heat-pipe segment.

### Claim 3 (depends on 1)

The wireless charging coil structure with the function of heat dissipation according to claim 1, characterized in that the heat-pipe segment has a predetermined length, and the predetermined length is directly proportional to a width of the heat-pipe segment.

### Claim 4 (depends on 3)

The wireless charging coil structure with the function of heat dissipation according to claim 3, characterized in that the predetermined length of the heat-pipe segment is less than a threshold value, and the threshold value is associated with a heat-dissipation power of the heat-pipe segment.

### Claim 5 (depends on 1)

The wireless charging coil structure with the function of heat dissipation according to claim 1, characterized in that a plurality of notches is disposed on an inner wall surface of the heat-pipe segment adjacent to the accommodating space.

### Claim 6 (depends on 1)

The wireless charging coil structure with the function of heat dissipation according to claim 1, characterized in that the predetermined thickness of the transmission segment is between 0.2 centimeter and 0.6 centimeter.

### Claim 7 (depends on 1)

The wireless charging coil structure with the function of heat dissipation according to claim 1, characterized in that the transmission segment is formed by stamping.

### Claim 8 (depends on 1)

The wireless charging coil structure with the function of heat dissipation according to claim 1, characterized in that the heat-pipe segment is connected with the transmission segment by soldering.

### Claim 9 (depends on 1)

The wireless charging coil structure with the function of heat dissipation according to claim 1, characterized in that an outer wall surface of the heat-pipe segment away from the accommodating space contacts an insulation layer, and the insulation layer and the heat-pipe segment are in an electrically insulated and heat-conductive connection.