CN112002540A - Coil and wireless charging device - Google Patents
Coil and wireless charging device Download PDFInfo
- Publication number
- CN112002540A CN112002540A CN202010644947.1A CN202010644947A CN112002540A CN 112002540 A CN112002540 A CN 112002540A CN 202010644947 A CN202010644947 A CN 202010644947A CN 112002540 A CN112002540 A CN 112002540A
- Authority
- CN
- China
- Prior art keywords
- coil
- winding
- planar winding
- turn
- ring part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims abstract description 166
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 238000009826 distribution Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/303—Clamping coils, windings or parts thereof together
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention provides a coil, which comprises a first wire end, a second wire end and a winding group, wherein the winding group at least comprises a first plane winding, and the first plane winding at least comprises a first turn coil and a second turn coil which are adjacent from outside to inside; a first turn coil of the first planar winding is provided with a slot extending in a coil extension direction and includes a first outer coil portion and a first inner coil portion separated by the slot; a second turn coil of the first planar winding is provided with a slot extending in a coil extension direction and includes a second outer coil portion and a second inner coil portion separated by the slot; the second outer loop portion of the first planar winding is located in the slot of the first turn coil and the first inner loop portion is located in the slot of the second turn coil. The invention also provides wireless charging equipment applying the coil. Compared with the related art, the coil and the wireless charging device have high transmission efficiency.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of wireless charging, in particular to a coil and wireless charging equipment applying wireless charging.
[ background of the invention ]
With the continuous development of applications of smart devices. Among the smart devices, the smart device having a wireless charging function is the most attractive product. Currently, wireless chargers are important wireless charging product devices among them.
The wireless charger in the related art adopts the electromagnetic induction principle, realizes energy transfer by energy coupling through the coil, and does not use the traditional characteristic of charging power line connection. Therefore, the watch is more and more favored by manufacturers such as mobile phones, tablet computers and smart watches.
However, the coil part for energy transmission of the related art wireless charger risks lowering the transmission efficiency due to the loss of resistance of the coil during wireless charging, and increases the amount of heat generation. Therefore, how to improve the performance of the coil is an important technical problem for wireless charging. Among them, the level of transmission efficiency of the coil of the receiving end for receiving wireless charging plays an important role.
Therefore, there is a need to provide a new coil and apparatus to solve the above technical problems.
[ summary of the invention ]
The invention aims to provide a coil and a wireless charging device with high transmission efficiency.
In order to achieve the above object, the present invention provides a coil including a first wire end, a second wire end, and a winding group connecting the first wire end to the second wire end,
the winding group at least comprises a first plane winding, and the first plane winding at least comprises a first turn coil and a second turn coil which are adjacent from outside to inside; a first turn coil of the first planar winding is provided with a slot extending in a coil extension direction and includes a first outer coil portion and a first inner coil portion separated by the slot; a second turn coil of the first planar winding is provided with a slot extending in a coil extension direction and includes a second outer coil portion and a second inner coil portion separated by the slot; the second outer loop portion of the first planar winding is located in the slot of the first turn coil and the first inner loop portion is located in the slot of the second turn coil.
Preferably, the winding group further includes at least a second planar winding stacked on the first planar winding, and the second planar winding includes at least a first coil turn and a second coil turn adjacent to each other from outside to inside; the first turn coil of the second planar winding is provided with a slot extending in the coil extension direction and comprising a first outer coil portion and a first inner coil portion separated by the slot; a second turn coil of the second planar winding is provided with a slot extending in a coil extension direction and includes a second outer coil portion and a second inner coil portion separated by the slot; a second outer coil portion of the second planar winding is located in the slot of the first turn coil, and a first inner coil portion is located in the slot of the second turn coil;
the first outer ring portion of the second planar winding is connected in parallel with the first outer ring portion of the first planar winding, the first inner ring portion of the second planar winding is connected in parallel with the first inner ring portion of the first planar winding, the second outer ring portion of the second planar winding is connected in parallel with the second outer ring portion of the first planar winding, and the second inner ring portion of the second planar winding is connected in parallel with the second inner ring portion of the first planar winding.
Preferably, the first planar winding further comprises a third coil turn adjacent to the second coil turn, the third coil turn being provided with a slot extending in the coil extension direction and comprising a third outer loop portion and a third inner loop portion separated by the slot, the third outer loop portion being disposed immediately adjacent to the second inner loop portion;
in the extending direction of the coil, the tail end of the second outer ring part of the first planar winding is opposite to the head end of the first inner ring part, the tail end of the first inner ring part is opposite to the head end of the second inner ring part, the tail end of the second inner ring part is opposite to the head end of the third outer ring part, the tail end of the second outer ring part is connected with the head end of the third outer ring part through a bridging part, the tail end of the first inner ring part and the head end of the second inner ring part form a yielding part at an interval, and the bridging part penetrates through the yielding part.
Preferably, the second planar winding further comprises a third turn of coil adjacent to the second turn of coil, the third turn of coil being provided with a slot extending in the direction of coil extension and comprising a third outer coil portion and a third inner coil portion separated by the slot; the third outer ring part is arranged adjacent to the second inner ring part;
in the extending direction of the coil, the tail end of the second outer ring part of the second planar winding is opposite to the head end of the first inner ring part, the tail end of the first inner ring part is opposite to the head end of the second inner ring part, the tail end of the second inner ring part is opposite to the head end of the third outer ring part, and the tail end of the first inner ring part is connected with the head end of the second inner ring part through a connecting part;
and the through hole at the tail end of the second outer ring part of the second planar winding is connected with the tail end of the second outer ring part of the first planar winding, and the through hole at the head end of the third outer ring part of the second planar winding is connected with the head end of the third outer ring part of the first planar winding.
Preferably, the first end of the first outer coil portion and the first end of the first inner coil portion of the first planar winding or the second planar winding are connected by a crossover portion.
Preferably, the first terminal is connected to a head end of the first outer coil portion of the first planar winding or the second planar winding.
Preferably, the outer and inner coil portions of each turn of the first and second planar windings have the same line width and the same spacing distance.
Preferably, the first planar winding and the second planar winding further include an n-th turn coil located at the innermost side, the coil further includes a wire outgoing section connecting the second wire end to the tail end of the n-th outer ring portion and the tail end of the n-th inner ring portion, the wire outgoing section extends from the tail end of the n-th inner ring portion to the outer side of the first outer ring portion to be connected to the second wire end, and the wire outgoing section extends in the radial direction of the winding group and is located on the plane where the first planar winding is located or the plane where the second planar winding is located.
Preferably, the first planar winding and the second planar winding further include an n-th turn coil located at the innermost side, the coil further includes an outlet line section connecting the second end to a tail end of the n-th outer ring section and a tail end of the n-th inner ring section, the outlet line section extending from the tail end of the n-th inner ring section to the outside of the first outer ring section to be connected to the second end, the outlet line section extending in a radial direction of the winding group; one part of the wire outlet section is positioned on the plane where the first plane winding is positioned, and the other part of the wire outlet section is positioned on the plane where the second plane winding is positioned.
The invention also provides a wireless charging device comprising a coil as described in any of the above.
Compared with the prior art, the coil and the wireless charging equipment have the advantages that the four strands of coils of the two adjacent turns of coils are arranged in a staggered mode, so that the length difference between the two turns of coils is smaller, the current distribution is more uniform, the magnetic field distribution is more uniform, and the transmission efficiency of the coil and the wireless charging equipment is higher.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic perspective view of a coil according to the present invention;
FIG. 2 is an exploded view of a portion of the coil of the present invention;
FIG. 3 is an enlarged view taken along section A of FIG. 1;
FIG. 4 is an enlarged view taken along section B of FIG. 2;
FIG. 5 is an enlarged view taken along section C of FIG. 2;
FIG. 6 is a schematic perspective view of another embodiment of a coil of the present invention;
FIG. 7 is a schematic perspective view of another angle of FIG. 6
FIG. 8 is an enlarged view taken along section D of FIG. 6;
fig. 9 is an enlarged view taken along a portion E in fig. 7.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a coil 100 is provided.
The coil 100 includes a first wire end 1, a second wire end 2, and a winding group 3 connecting the first wire end 1 to the second wire end 2.
In the present embodiment, the first wire end 1 is an input port of the coil 100.
The second end 2 is an output port of the coil 100. Of course, the first wire end 1 and the second wire end 2 may be interchanged, i.e. the first wire end 1 is an output port of the coil 100; it is also possible that the second end 2 is an input port of the coil 100.
In the present embodiment, the winding group 3 includes a first planar winding P3 and a second planar winding N3 stacked, and the first planar winding P3 and the second planar winding N3 are both made by concentrically and spirally winding in a clockwise or counterclockwise direction.
The first planar winding P3 comprises a first turn coil P31, a second turn coil P32, a third turn coil P33, a fourth turn coil P34, a … … and an n-th turn coil P3n which are sequentially arranged from outside to inside at intervals. Each turn of the coil is provided with a slot 5 extending in the direction of extension of the coil. The first turn coil P31 includes a first outer coil portion P31a and a first inner coil portion P31b separated by a slot 5. The second turn coil P32 includes a second outer loop portion P32a and a second inner loop portion P32b separated by a slot 5. The third turn coil P33 includes a third outer coil portion P33a and a third inner coil portion P33b separated by a slot 5. The fourth turn coil P34 includes a fourth outer loop portion P34a and a fourth inner loop portion P34b separated by a slot 5.… … are provided. Nth turn coil P3n includes nth outer and inner ring portions P3na and P3nb separated by slot 5.
The coils of the first planar winding P3 are arranged in sequence from outside to inside as a first outer coil portion P31a, a second outer coil portion P32a, a first inner coil portion P31b, a second inner coil portion P32b, a third outer coil portion P33a, a fourth outer coil portion P34a, a third inner coil portion P33b, a fourth inner coil portion P34b, … …, an nth outer coil portion P11a, and an nth inner coil portion P11 b. The first outer ring portion P31a, the second outer ring portion P32a, the third outer ring portion P33a, the fourth outer ring portion P34a, … … and the nth outer ring portion P11a are connected end to form an outer ring portion of a first planar winding P3, and the first inner ring portion P31b, the second inner ring portion P32b, the third inner ring portion P33b, the fourth inner ring portions P34b, … … and the nth inner ring portion P11b are connected end to form an inner ring portion of a first planar winding P3.
The second planar winding N3 comprises a first turn coil N31, a second turn coil N32, a third turn coil N33, a fourth turn coil P34, a … … and an nth turn coil N3N which are arranged from outside to inside at intervals in sequence. Each turn of the coil is provided with a slot 5 extending in the direction of extension of the coil. The first turn coil N31 includes a first outer turn portion N31a and a first inner turn portion N31b separated by a slot 5. The second turn coil N32 includes a second outer loop portion N32a and a second inner loop portion N32b separated by a slot 5. The third turn coil N33 includes a third outer turn portion N33a and a third inner turn portion N33b separated by a slot 5. The fourth turn coil N34 includes a fourth outer loop portion N34a and a fourth inner loop portion N34b, … … separated by a slot 5, and the nth turn coil N3N includes an nth outer loop portion N3na and an nth inner loop portion N3nb separated by a slot 5.
The coils of the second planar winding N3 are arranged in this order from outside to inside as a first outer coil portion N31a, a second outer coil portion N32a, a first inner coil portion N31b, a second inner coil portion N32b, a third outer coil portion N33a, a fourth outer coil portion N34a, a third inner coil portion N33b, a fourth inner coil portion N34b, … …, an nth outer coil portion N11a, and an nth inner coil portion N11 b. The first outer ring part N31a, the second outer ring part N32a, the third outer ring part N33a, the fourth outer ring part N34a, … … and the nth outer ring part N11a are connected end to form an outer ring part of a second planar winding N3, and the first inner ring part N31b, the second inner ring part N32b, the third inner ring part N33b, the fourth inner ring parts N34b, … … and the nth inner ring part N11b are connected end to form an inner ring part of a first planar winding N3.
Wherein, each turn of coil is oppositely overlapped at the outer ring part of the first plane winding P3 and the outer ring part of the second plane winding N3. Each coil turn is oppositely stacked at the inner coil portion of the first planar winding P3 and the inner coil portion of the second planar winding N3.
An outer ring part of the first planar winding P3 is connected with an inner ring part of the first planar winding P3 in parallel, and an outer ring part of the second planar winding N3 is connected with an inner ring part of the second planar winding N3 in parallel; the outer ring part of the first planar winding P3 is connected in parallel with the outer ring part of the second planar winding N3, and the inner ring part of the first planar winding P3 is connected in parallel with the inner ring part of the second planar winding N3. Specifically, the outer ring part of each turn of the first planar winding P3 is connected in parallel with the outer ring part of the same turn of the second planar winding N3, and the inner ring part of each turn of the first planar winding P3 is connected in parallel with the inner ring part of the same turn of the second planar winding N3. Specifically, the first planar winding P3 and the second planar winding N3 may be connected in parallel through the metalized via 9.
As such, for each turn of the coil of the winding group 3, it includes two strands of coils (e.g., the first outer ring part P31a and the first inner ring part P31b) in the first planar winding P3 and two strands of coils (e.g., the first outer ring part N31a and the first inner ring part N31b) in the second planar winding layer. That is to say that each turn of the coil comprises a total of four turns. In each plane winding, every two turns of coils are in one group from the outermost side to the innermost side, a cutting groove is formed between two turns of coils of each turn of coil in each group, one turn of coil of the adjacent turn of coil is arranged in the cutting groove, and four turns of coils of the adjacent two turns of coils are arranged in a staggered mode, so that the length difference between the two turns of coils is smaller, the current distribution is more uniform, the magnetic field distribution is more uniform, and the transmission efficiency of the coil and the wireless charging equipment is higher. However, the exception is that when the total number of turns of the coil is odd, the two turns of the innermost turn of the coil are disposed adjacent to each other, and are no longer staggered with respect to the other turns of the coil.
Further, in each planar winding, in the extending direction of the coil, except for the innermost strand of the coil, the tail end of each strand of the coil is opposite to the head end of the inner strand of the coil. For the outer ring part, every two turns of coils form a group from the outermost side to the innermost side of the coil, the tail end of the outer turn of coil in each group is opposite to the head end of the inner turn of coil, and the opposite head and tail ends can be connected through a connecting part; the tail end of one turn coil at the inner side of each group is separated from the head end of one turn coil adjacent to the inner side of the group by a slot, and the separated head end and the separated tail end can be connected through a bridging part. Similarly, for the inner ring part, every two turns of coils form a group from the outermost side to the innermost side of the coil, the tail end of the outer turn of coil in each group is opposite to the head end of the inner turn of coil, and the opposite head and tail ends can be connected through a connecting part; the tail end of one turn coil at the inner side of each group is separated from the head end of one turn coil adjacent to the inner side of the group by a slot, and the separated head end and the separated tail end can be connected through a bridging part. In a certain plane winding, when the head end and the tail end of two adjacent turns of coils are connected through the bridging part, the connecting part is not arranged in the cutting groove where the bridging part is located any more so as to form a yielding part avoiding the bridging part. In the other planar winding, the connecting part is arranged in the cutting groove corresponding to the bridging part, the head ends of the same turn coils of the two planar windings are connected through the through hole, and the tail ends of the same turn coils are connected through the through hole. For example, in the coil extending direction, the tail end of the second outer coil portion P32a of the first planar winding P3 is opposite to the head end of the first inner coil portion P31b, the tail end of the first inner coil portion P31b is opposite to the head end of the second inner coil portion P32b, the tail end of the second inner coil portion P32b is opposite to the head end of the third outer coil portion P33a, the tail end of the second outer coil portion P32a is connected to the head end of the third outer coil portion P33a through a bridge portion 6, and the tail end of the first inner coil portion P31b is spaced from the head end of the second inner coil portion P32b to form a relief portion 7. The bridge portion 6 passes through the escape portion 7. In the coil extending direction, the tail end of the second outer ring portion N32a of the second planar winding N3 is opposite to the head end of the first inner ring portion N31b, the tail end of the first inner ring portion N31b is opposite to the head end of the second inner ring portion N32b, the tail end of the second inner ring portion N32b is opposite to the head end of the third outer ring portion N33a, and the tail end of the first inner ring portion N31b is connected to the head end of the second inner ring portion N32b through a connecting portion 8; the tail end through hole 9 of the second outer ring part N32a of the second planar winding N3 is connected with the tail end of the second outer ring part N32a of the first planar winding P3, and the head end through hole 9 of the third outer ring part N33a of the second planar winding N3 is connected with the head end of the third outer ring part N33a of the first planar winding P3; the tail end through hole 9 of the first inner ring portion N31b of the second planar winding N3 is connected with the tail end of the first inner ring portion P31b of the first planar winding P3, and the head end through hole 9 of the second inner ring portion N32b of the second planar winding N3 is connected with the head end of the second inner ring portion P32b of the first planar winding P3.
In the present embodiment, the leading end of the first outer ring part P31a and the leading end of the first inner ring part P31b of the first planar winding P3 are connected by a bridge part 6, and the carry part 7 is formed at a position corresponding to the bridge part 6. In other embodiments, the first outer ring portion and the first inner ring portion may be connected to each other by the connection portion 8 in the second planar winding N3.
In the present embodiment, the first terminal 1 is connected to the head end of the first outer ring P31a of the first planar winding P3. In other embodiments, the first terminal 1 may be connected to the head end of the first outer turn N31a of the second planar winding N3.
In this embodiment, the outer and inner coil portions of the coils of the first and second planar windings P3 and N3 have the same line width and the same spacing distance. Of course, without limitation, the line widths may be different, for example, the line width may be smaller from the outer turn to the inner turn.
In this embodiment, in order to allow the first wire end 1 and the second wire end 2 to be juxtaposed outside the winding group 3 and to allow better routing without affecting the electrical performance, the coil 100 further includes an outlet section 4 connecting the second wire end 2 to the tail end of the nth outer coil portion and the tail end of the nth inner coil portion. The outlet section 4 extends in the radial direction of the winding group 3. Specifically, the outlet section 4 extends from the tail end of the n-th inner ring portion to the outside of the first outer ring portion to be connected to the second terminal 2.
In this embodiment, the outlet section 4 is located on the plane where the second planar winding N3 is located. It should be noted that the outlet section 4 may also be located in the plane of the first planar winding P3.
Of course, the outlet section 4 may also be provided with various outlet ways without being limited thereto. Referring to fig. 6-9, fig. 6 is a schematic perspective view of another embodiment of a coil according to the present invention. Another embodiment shown in fig. 6 provides a coil 200.
The coil 200 has substantially the same structure as the coil 100, and the coil 200 is different from the coil 100 in the wire outgoing manner of the wire outgoing section.
The outlet section 2004 extends in the radial direction of the winding group 2003. One part of the outlet section 2004 is located on the plane of the first planar winding P3P, and the other part of the outlet section 2004 is located on the plane of the second planar winding N3N, and the two parts are connected through a via hole.
The inductance of the coil 100 made according to the invention was tested to be 5uH, with an inductance AC resistance <185.0 mohm. It can be seen that the inductance and resistance of the coil 100 are smaller than those of the conventional coil, which means that the coil 100 of the present invention has high transmission efficiency.
It should be noted that the coil is not limited to include two layers of planar windings, and the coil may be a multilayer planar winding or a single layer planar winding according to the requirement.
The present invention also provides a wireless charging device including the coil 100 or the coil 200.
Compared with the prior art, the coil and the wireless charging equipment have the advantages that the four strands of coils of the two adjacent turns of coils are arranged in a staggered mode, so that the length difference between the two turns of coils is smaller, the current distribution is more uniform, the magnetic field distribution is more uniform, and the transmission efficiency of the coil and the wireless charging equipment is higher.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A coil comprising a first wire end, a second wire end, and a winding group connecting the first wire end to the second wire end,
the winding group at least comprises a first plane winding, and the first plane winding at least comprises a first turn coil and a second turn coil which are adjacent from outside to inside; a first turn coil of the first planar winding is provided with a slot extending in a coil extension direction and includes a first outer coil portion and a first inner coil portion separated by the slot; a second turn coil of the first planar winding is provided with a slot extending in a coil extension direction and includes a second outer coil portion and a second inner coil portion separated by the slot; the second outer loop portion of the first planar winding is located in the slot of the first turn coil and the first inner loop portion is located in the slot of the second turn coil.
2. The coil of claim 1, wherein the winding group further comprises at least a second planar winding stacked on the first planar winding, the second planar winding at least comprises a first coil turn and a second coil turn which are adjacent from outside to inside; the first turn coil of the second planar winding is provided with a slot extending in the coil extension direction and comprising a first outer coil portion and a first inner coil portion separated by the slot; a second turn coil of the second planar winding is provided with a slot extending in a coil extension direction and includes a second outer coil portion and a second inner coil portion separated by the slot; a second outer coil portion of the second planar winding is located in the slot of the first turn coil, and a first inner coil portion is located in the slot of the second turn coil;
the first outer ring portion of the second planar winding is connected in parallel with the first outer ring portion of the first planar winding, the first inner ring portion of the second planar winding is connected in parallel with the first inner ring portion of the first planar winding, the second outer ring portion of the second planar winding is connected in parallel with the second outer ring portion of the first planar winding, and the second inner ring portion of the second planar winding is connected in parallel with the second inner ring portion of the first planar winding.
3. The coil of claim 2, wherein the first planar winding further comprises a third turn of the coil adjacent the second turn of the coil, the third turn of the coil being provided with a slot extending in a direction of coil extension and comprising a third outer loop portion and a third inner loop portion separated by the slot, the third outer loop portion being disposed immediately adjacent the second inner loop portion;
in the extending direction of the coil, the tail end of the second outer ring part of the first planar winding is opposite to the head end of the first inner ring part, the tail end of the first inner ring part is opposite to the head end of the second inner ring part, the tail end of the second inner ring part is opposite to the head end of the third outer ring part, the tail end of the second outer ring part is connected with the head end of the third outer ring part through a bridging part, the tail end of the first inner ring part and the head end of the second inner ring part form a yielding part at an interval, and the bridging part penetrates through the yielding part.
4. A coil according to claim 3, wherein the second planar winding further comprises a third turn of the coil adjacent the second turn of the coil, the third turn of the coil being provided with a slot extending in a direction of coil extension and comprising a third outer loop portion and a third inner loop portion separated by the slot; the third outer ring part is arranged adjacent to the second inner ring part;
in the extending direction of the coil, the tail end of the second outer ring part of the second planar winding is opposite to the head end of the first inner ring part, the tail end of the first inner ring part is opposite to the head end of the second inner ring part, the tail end of the second inner ring part is opposite to the head end of the third outer ring part, and the tail end of the first inner ring part is connected with the head end of the second inner ring part through a connecting part;
the tail end through hole of the second outer ring part of the second planar winding is connected with the tail end of the second outer ring part of the first planar winding, the head end through hole of the third outer ring part of the second planar winding is connected with the head end of the third outer ring part of the first planar winding, the tail end through hole of the first inner ring part of the second planar winding is connected with the tail end of the first inner ring part of the first planar winding, and the head end through hole of the second inner ring part of the second planar winding is connected with the head end of the second inner ring part of the first planar winding.
5. The coil of claim 2, wherein the head end of the first outer coil portion and the head end of the first inner coil portion of the first planar winding or the second planar winding are connected by a crossover.
6. The coil of claim 2, wherein the first wire end is connected to a head end of the first outer coil portion of the first planar winding or the second planar winding.
7. The coil of claim 2, wherein the outer and inner coil portions of each turn of the first and second planar windings have the same line width and the same spacing distance.
8. The coil of claim 2, wherein the first planar winding and the second planar winding further comprise an n-th turn of coil located at the innermost side, the coil further comprising an outlet section connecting the second end to a tail end of the n-th outer ring portion and a tail end of the n-th inner ring portion, the outlet section extending from the tail end of the n-th inner ring portion to the outside of the first outer ring portion to be connected to the second end, the outlet section extending in a radial direction of the winding group and located on a plane of the first planar winding or a plane of the second planar winding.
9. The coil of claim 2 wherein the first and second planar windings further comprise an n-th turn of coil located innermost, the coil further comprising an outlet section connecting the second end to a tail end of the n-th outer ring portion and a tail end of the n-th inner ring portion, the outlet section extending from the tail end of the n-th inner ring portion to an outside of the first outer ring portion to be connected to the second end, the outlet section extending in a radial direction of the winding group; one part of the wire outlet section is positioned on the plane where the first plane winding is positioned, and the other part of the wire outlet section is positioned on the plane where the second plane winding is positioned.
10. A wireless charging device, characterized in that the device comprises a coil according to any of claims 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010644947.1A CN112002540B (en) | 2020-07-07 | 2020-07-07 | Coil and wireless charging device |
| PCT/CN2020/121274 WO2022007226A1 (en) | 2020-07-07 | 2020-10-15 | Coil and wireless charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010644947.1A CN112002540B (en) | 2020-07-07 | 2020-07-07 | Coil and wireless charging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112002540A true CN112002540A (en) | 2020-11-27 |
| CN112002540B CN112002540B (en) | 2022-05-03 |
Family
ID=73467441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010644947.1A Expired - Fee Related CN112002540B (en) | 2020-07-07 | 2020-07-07 | Coil and wireless charging device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112002540B (en) |
| WO (1) | WO2022007226A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024131096A1 (en) * | 2022-12-20 | 2024-06-27 | 荣耀终端有限公司 | Electronic device and wireless charging system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0766050A (en) * | 1993-08-23 | 1995-03-10 | Nippon Telegr & Teleph Corp <Ntt> | Thin-film inductor and thin-film transformer |
| CN207624533U (en) * | 2017-12-11 | 2018-07-17 | 浙江省东阳市东磁诚基电子有限公司 | A kind of multi cord loop construction for wireless charging |
| CN208522543U (en) * | 2018-07-24 | 2019-02-19 | 昆山联滔电子有限公司 | Wireless charging electric wire coil apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190131057A1 (en) * | 2017-10-30 | 2019-05-02 | Samsung Electro-Mechanics Co., Ltd | Coil assembly with multiple coil wirings |
| CN109961942B (en) * | 2018-08-04 | 2020-06-16 | 华为技术有限公司 | Coil module, wireless charging transmitting device, wireless charging receiving device, wireless charging system and wireless charging terminal |
| CN109326424B (en) * | 2018-10-08 | 2021-08-13 | 上海安费诺永亿通讯电子有限公司 | Coil, wireless power transmitter and receiver, near field communicator, and electronic device |
| CN109887724B (en) * | 2019-02-28 | 2021-10-01 | 华为技术有限公司 | Coil module, wireless charging transmitting and receiving device, system and mobile terminal |
| CN209766214U (en) * | 2019-05-14 | 2019-12-10 | 苏州蓝沛无线通信科技有限公司 | Novel wire winding mode's wireless charging coil |
-
2020
- 2020-07-07 CN CN202010644947.1A patent/CN112002540B/en not_active Expired - Fee Related
- 2020-10-15 WO PCT/CN2020/121274 patent/WO2022007226A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0766050A (en) * | 1993-08-23 | 1995-03-10 | Nippon Telegr & Teleph Corp <Ntt> | Thin-film inductor and thin-film transformer |
| CN207624533U (en) * | 2017-12-11 | 2018-07-17 | 浙江省东阳市东磁诚基电子有限公司 | A kind of multi cord loop construction for wireless charging |
| CN208522543U (en) * | 2018-07-24 | 2019-02-19 | 昆山联滔电子有限公司 | Wireless charging electric wire coil apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024131096A1 (en) * | 2022-12-20 | 2024-06-27 | 荣耀终端有限公司 | Electronic device and wireless charging system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112002540B (en) | 2022-05-03 |
| WO2022007226A1 (en) | 2022-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2481662C2 (en) | Flat coil | |
| WO2020238192A1 (en) | Coil winding, coil module, transmitting device, receiving device, system, and terminal | |
| EP3809430B1 (en) | Coil module, wireless charging transmitting device, wireless charging receiving device, wireless charging system, and mobile terminal | |
| US7227438B2 (en) | Superconducting wire transposition method and superconducting transformer using the same | |
| CN114520547A (en) | Coil, wireless charging receiving device, transmitting device and system | |
| JP2002208527A (en) | Leakage flux type power conversion transformer | |
| CN112002540B (en) | Coil and wireless charging device | |
| GB2535822B (en) | Planar transformer with conductor plates forming windings | |
| CN112185659B (en) | Coil and wireless charging device | |
| CN1979704B (en) | Transformer and its producing method | |
| US7268658B1 (en) | Transformer having leakage inductance control structure | |
| CN211294840U (en) | Continuous winding of power transformer and power transformer | |
| CN107045925A (en) | Coil component | |
| US20220108823A1 (en) | Inductor | |
| WO2023279639A1 (en) | Coil, wireless charging transmitting device, wireless charging receiving device, and mobile terminal | |
| CN112185660B (en) | Coil and wireless charging device | |
| US20150279549A1 (en) | Systems and methods for promoting low loss in parallel conductors at high frequencies | |
| CN111180173A (en) | Wireless charging coil and wireless charging device | |
| CN210575463U (en) | High-efficient wireless receiving coil that charges | |
| CN112201458B (en) | Coil and wireless charging device | |
| EP1677407B1 (en) | Circulatory current choke | |
| EP2560175A1 (en) | High-frequency transformer | |
| CN209626010U (en) | Spiral plate type winding | |
| US20160111201A1 (en) | Transformer | |
| CN108962561B (en) | High-frequency transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220503 |