CN210575463U

CN210575463U - High-efficient wireless receiving coil that charges

Info

Publication number: CN210575463U
Application number: CN201920398971.4U
Authority: CN
Inventors: 李修文; 康来利; 周昊平; 郝天惠
Original assignee: Shanghai Wanci New Material Technology Co ltd
Current assignee: Shanghai Wanci New Material Technology Co ltd
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-05-19
Anticipated expiration: 2029-03-27

Abstract

The utility model discloses a high-efficient wireless receiving coil that charges, including insulating layer, first metal level and second metal level set up respectively in the insulating layer both sides, and first metal level and second metal level all include the wire winding and by the two sets of branch wire windings of this wire winding syntropy extension separation, and two sets of branch wire windings are staggered in proper order and are enclosed the tiling and arrange and terminal mutual isolation, and two sets of branch wire windings of first metal level correspond the electricity with two sets of branch wire windings of second metal level and are connected. The thickness of the coil can be greatly reduced by tiling and arranging the coil, and the thickness regulation of the wireless charging receiving device is met; in addition, two groups of separated branch winding wires are wound in a sequential crossing surrounding mode, a part of eddy current generated by adjacent wiring can be offset, resistance caused by factors such as eddy current and adjacent wiring interference loss is reduced through wiring optimization, wireless charging efficiency is improved, and energy loss is reduced.

Description

High-efficient wireless receiving coil that charges

Technical Field

The utility model relates to a wireless technical field that charges specifically is a high-efficient wireless receiving coil that charges.

Background

The coil is an important component in the wireless charging receiving device, and high requirements are required to be put on the coil in various wireless charging receiving devices due to thickness regulations of the wireless charging receiving devices; in addition, the wireless charging receiving equipment is arranged on the transmitting device, so that the wireless charging receiving equipment has a good charging area, can achieve good receiving efficiency in the largest area, and needs to reduce the loss caused by the alternating current resistance of the coil as much as possible.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the background art, the utility model provides a high-efficient wireless receiving coil that charges.

In order to achieve the above object, the utility model provides a following technical scheme: a high-efficiency wireless charging receiving coil comprises an insulating layer, a first metal layer and a second metal layer, the first metal layer and the second metal layer are respectively arranged at two sides of the insulating layer, the first metal layer and the second metal layer respectively comprise a lead winding and two groups of branch windings which are separated by the lead winding in the same direction in an extending way, the two groups of branch windings are sequentially crossed, surrounded, tiled and arranged, and the tail ends of the branch windings are mutually isolated, the two groups of branch routing of the first metal layer are correspondingly and electrically connected with the two groups of branch routing of the second metal layer, the two groups of branch winding wires of the first metal layer are correspondingly and electrically connected with the two groups of branch winding wires of the second metal layer through conductive patterns, the number of strands of the wire winding of the first metal layer is different from that of the strands of the wire winding of the second metal layer, and the number of the conductive patterns is the same as that of the strands of the fewer wire windings.

As an optimal technical solution of the present invention, the number of strands of the wire winding is an even number.

As an optimized technical solution of the present invention, each group of the branch winding strands is half of the number of the wire winding strands.

Compared with the prior art, the beneficial effects of the utility model are that: the thickness of the coil can be greatly reduced by tiling and arranging the coil, and the thickness regulation of the wireless charging receiving device is met; in addition, two groups of separated branch winding wires are wound in a sequential crossing surrounding mode, a part of eddy current generated by adjacent wiring can be offset, resistance caused by factors such as eddy current and adjacent wiring interference loss is reduced through wiring optimization, wireless charging efficiency is improved, and energy loss is reduced.

Drawings

Fig. 1 is a schematic structural view of a first metal layer in embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of the second metal layer in embodiment 1 of the present invention.

Fig. 3 is a schematic structural view of a first metal layer in embodiment 2 of the present invention.

Fig. 4 is a schematic structural view of the second metal layer in embodiment 2 of the present invention.

Fig. 5 is a schematic structural view of a first metal layer in embodiment 3 of the present invention.

Fig. 6 is a schematic structural view of a second metal layer in embodiment 3 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1 and fig. 2, the high-efficiency wireless charging receiving coil provided in the present embodiment includes a first metal layer 10, a second metal layer 20, and an insulating layer 30, where the insulating layer 30 has a first surface 31 and a second surface 32 opposite to each other.

Referring to fig. 1, the first metal layer 10 is disposed on the first surface 31 of the insulating layer 30, and includes a first wire winding 13, a first branch winding 11 and a second branch winding 12, wherein the first branch winding 11 and the second branch winding 12 extend from an inner end of the first wire winding 13 in a same direction, the second branch winding 12 is disposed in a surrounding ring of the first branch winding 11, a length of the first branch winding 11 is greater than a length of the second branch winding 12, a number of the first branch winding 11 is the same as a number of the second branch winding 12, the number of the first branch winding 11 is half of a number of the first wire winding 13, and ends of the first branch winding 11 and the second branch winding 12 are spaced apart.

The first metal layer 10 is also provided with a first lead wire 14 extending from the outer end of the first wire winding 13 and a second lead wire 15 arranged in parallel with the first lead wire 14.

Referring to fig. 2, the second metal layer 20 is disposed on the second surface 32 of the insulating layer 30, and includes a second wire winding 23, a third branch winding 21 and a fourth branch winding 22, the third branch winding 21 and the fourth branch winding 22 are extended from the inner end of the second wire winding 23 in the same direction, the number of the third branch winding 21 and the fourth branch winding 22 is the same as half of the number of the second wire winding 23, and the ends of the third branch winding 21 and the fourth branch winding 22 are spaced apart.

The inner end of the third branch winding wire 21 is connected to the inner end of the first branch winding wire 11 through the first and second

conductive patterns

40 and 41, the inner end of the fourth branch winding wire 22 is connected to the inner end of the second branch winding wire 12 through the third and fourth

conductive patterns

42 and 43, so that the first and

second metal layers

10 and 20 are connected in series, and the outer end of the second wire winding 23 is also electrically connected to the second lead wire 15 through the fifth conductive pattern 45.

Example 2:

referring to fig. 3 to 4, the rest of the process is the same as that of embodiment 1, except that: the first and

second wire windings

11a and 21a have 6 strands of wires, and the

branch windings

12a, 13a, 22a, and 23a have 3 strands of wires. The first branch winding 12a of the first wire winding 11a is spaced apart from the end of the second branch winding 13a and connected to the ends of the third and

fourth branch windings

22a and 23a of the second winding group 21a by a first conductive pattern 40a, a second conductive pattern 41a, a third conductive pattern 42a, a fourth conductive pattern 43a, a fifth conductive pattern 44a, a sixth conductive pattern 45a, etc., respectively.

Example 3:

referring to fig. 5 to 6, the number of the conductive lines of the first conductive winding 11b and the second conductive winding 21b may be 8, 10, etc. in increments of even 2, the number of the

branch windings

12b, 13b, 22b, 23b may be 4, 5, etc. in increments of odd 1, the first branch winding 12b of the first conductive winding 11b is spaced apart from the end of the second branch winding 13b, and the first conductive pattern 40b, the second conductive pattern 41b, the third conductive pattern 42b, the fourth conductive pattern 43b, etc. are connected to the end of the third branch winding 22b and the fourth branch winding 23b of the second conductive winding 21b, respectively, and the number of the conductive patterns is equal to the number of the strands of the first conductive winding 11b and the second conductive winding 21 b.

Example 4:

there may be a case where the number of strands of the first wire winding 11b is different from that of the second wire winding 21b, and when the first branch winding 12b and the second branch winding 13b, and the third branch winding 22b and the fourth branch winding 23b are connected, the number of the conductive patterns is the same as that of the smaller number of strands of the wire winding, for example, the number of strands of the first wire winding 11b is 4, and the number of strands of the second wire winding 21b is 6, and when the first branch winding 12b and the second branch winding 13b, and the third branch winding 22b are connected to the fourth branch winding 23b, the number of the conductive patterns is the same as that of the smaller number of strands of the wire winding, that is, 4.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a high-efficient wireless receiving coil that charges which characterized in that: the two groups of branch winding wires of the first metal layer are correspondingly and electrically connected with the two groups of branch winding wires of the second metal layer through conductive patterns, the number of strands of the conductive wire winding of the first metal layer is different from that of the conductive wire winding of the second metal layer, and the number of the conductive patterns is the same as that of the strands of fewer conductive wire windings.

2. A high efficiency wireless charging receive coil in accordance with claim 1, wherein: the number of strands of the wire winding is even.

3. A high efficiency wireless charging receive coil in accordance with claim 2, wherein: the number of strands of each group of branch winding wires is half of the number of strands of the wire winding.