Induction Type Power Supply System and Coil Module Thereof

• US 20180261384A1
• Filed: 05/14/2018
• Published: 09/13/2018
• Est. Priority Date: 02/11/2015
• Status: Active Grant

• Current Assignee: Fu Da Tong Technology Co., Ltd.
• Original Assignee: Fu Da Tong Technology Co., Ltd.
• Inventors: Tsai, Ming-Chiu, Chan, Chi-Che
• Granted Patent: US 10,643,787 B2
• Time in Patent Office: Days
• CPC Class Codes: H01F 2038/143 for signals
• CPC Class Codes: H01F 27/2823 Wires H01F27/2866 takes precedence
• CPC Class Codes: H01F 27/2871 Pancake coils
• CPC Class Codes: H01F 27/29 Terminals; Tapping arrangements for signal inductances
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction

Abstract

A coil module for an induction type power supply system includes a supporting frame, an upper lid and a first wire. The upper lid, disposed on the supporting frame, includes a spiral slot. The first wire is used for being inserted in the spiral slot to form a coil.

Claims

1. A coil module for an induction type power supply system comprising:

a supporting frame;

an upper lid, disposed on the supporting frame, the upper lid comprising a spiral slot; and

a first wire, for being inserted in the spiral slot to form a coil.

2. The coil module of claim 1, further comprising:

a magnetic conductor, disposed between the coil and the supporting frame, for isolating electromagnetic energies of the coil.

3. The coil module of claim 1, wherein an opening is disposed between the N^th layer and the (N+1)^th layer of the spiral slot.

4. The coil module of claim 3, wherein the first wire is disposed by entering the (N+1)^th layer from the N^th layer via the opening without entirely filling the N^th layer.

5. The coil module of claim 1, wherein a shape of the spiral slot is disposed following a shape of the upper lid.

6. The coil module of claim 1, wherein the first wire and a second wire insulated from the first wire are disposed in the spiral slot, and operations of signal modulation or demodulation are performed on one of the first wire and the second wire, while the other wire transmits power without performing the operations of signal modulation or demodulation.

7. The coil module of claim 1, wherein the density of wire in a middle part of the coil is lower than the density of wire near two terminals of the coil.

8. An induction type power supply system, comprising:

a first coil module, for a supplying end of the induction type power supply system, the first coil module comprising;

a supporting frame;

an upper lid, disposed on the supporting frame, the upper lid comprising a first spiral slot; and

a first wire, for being inserted in the first spiral slot to form a supplying-end coil;

a second coil module, for a receiving end of the induction type power supply system, the second coil module comprising;

a supporting frame;

an upper lid, disposed on the supporting frame, the upper lid comprising a second spiral slot; and

a second wire, for being inserted in the second spiral slot to form a receiving-end coil.

9. The induction type power supply system of claim 8, wherein a first opening is disposed between the M^th layer and the (M+1)^th layer of the first spiral slot, and a second opening is disposed between the N^th layer and the (N+1)^th layer of the second spiral slot.

10. The induction type power supply system of claim 9, wherein the first wire is disposed by entering the (M+1)^th layer from the M^th layer via the first opening without entirely filling the M^th layer, and the second wire is disposed by entering the (N+1)^th layer from the N^th layer via the second opening without entirely filling the N^th layer.

11. The induction type power supply system of claim 8, wherein a pattern of the first wire inserted in the first spiral slot is different from a pattern of the second wire inserted in the second spiral slot.

12. The induction type power supply system of claim 8, wherein a length of the outmost circle of the supplying-end coil is smaller than a length of the outmost circle of the receiving-end coil.

13. The induction type power supply system of claim 8, wherein when the first wire is inserted in the first spiral slot and the second wire is inserted in the second spiral slot, the number of circles in the first spiral slot entirely filled with the first wire is equal or close to the number of circles in the second spiral slot entirely filled with the second wire.