CN212210519U - Via hole structure applied to high-power wireless charging, wireless charging device and system - Google Patents
Via hole structure applied to high-power wireless charging, wireless charging device and system Download PDFInfo
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- CN212210519U CN212210519U CN202020285624.3U CN202020285624U CN212210519U CN 212210519 U CN212210519 U CN 212210519U CN 202020285624 U CN202020285624 U CN 202020285624U CN 212210519 U CN212210519 U CN 212210519U
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- 230000006698 induction Effects 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 3
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 230000035699 permeability Effects 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 17
- 239000002159 nanocrystal Substances 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 239000002707 nanocrystalline material Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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Abstract
The utility model provides a be applied to high-power wireless via hole structure, wireless charging device and system that charge, wherein, via hole structure includes: the device comprises a magnetizer and a lead penetrating through the magnetizer; the material of magnetizer is the nanocrystalline, the magnetizer has wire via hole region, via hole region offers and is used for the wire crosses the through-hole of line, still be provided with the magnetic medium on the inside wall face of through-hole, have the interval between the inside wall face of wire and through-hole that passes corresponding through-hole, the magnetic induction intensity between wire and the magnetizer satisfies: mu is B ═ mu0I/2 π x, where μ0And the magnetic induction intensity between the lead and the magnetizer is smaller than a preset magnetic induction intensity value. The utility model discloses a be applied to high-power wireless via hole structure that charges, through set up the magnetic ring of the low conductivity of low magnetic conductivity in through hole department, the litz wire passes from the magnetic ring, so reduces nanocrystalline loss and local overheat problem effectively.
Description
Technical Field
The utility model relates to a wireless technical field that charges especially relates to a be applied to high-power wireless via hole structure, wireless charging device and system that charge.
Background
At present, the magnetic material matched with the coil in all high-power wireless charging equipment is ferrite. Since ferrite is ceramic in nature and is relatively easy to break, it is particularly troublesome in the design of the former structure and the assembly in the later production. If the design is not reasonable or errors occur during assembly, the ferrite is easy to crack. Meanwhile, the ferrite in the vehicle-end equipment also meets the vehicle-specification conditions, which provides greater difficulties for structural design and production assembly.
In addition, since the ferrite Bs suitable for high-power wireless charging is not very high, the thickness of the ferrite is generally between 5mm and 8mm in order to ensure that the ferrite is not magnetically saturated, which greatly increases the height and weight of the wireless charging vehicle-end equipment. At present, vehicle-end charging equipment is all developing towards miniaturization and light weight, so that the development of a new magnetic material is urgent.
The nanocrystalline material is formed in one step and is made of metal, and the crushed metal is integrally softer after being processed again and is not easy to crack under impact. Such characteristic structural design is simple, production convenient assembling, and the magnetic material who is very suitable for as wireless charging product car end uses. Meanwhile, Bs of the nanocrystalline product is higher than that of ferrite and is less prone to magnetic saturation, and the thickness of the nanocrystalline can be about 3 mm according to the characteristic, so that the nanocrystalline has great benefits for miniaturization and light weight of vehicle-end equipment. In addition, due to the integrated forming process, the process requirements for application flow treatment are greatly reduced, the production efficiency is improved, the product reliability is improved to a certain extent, and the product reject ratio is reduced.
The ferrite in the wireless charging equipment is a splicing structure and is formed by splicing several pieces of 100 multiplied by 150 ferrite. The ferrite is arranged above the litz wire, and the litz wire can pass through the ferrite to be connected with a vehicle-end circuit by slotting on the ferrite. The ferrite performance is not greatly influenced by a single ferrite slot or one side of the ground ferrite, and the influence on the spliced ferrite plate is very little.
Because the nanocrystalline is an integrated structure, slotting on the nanocrystalline can damage the internal structure thereof, resulting in the reduction of magnetic performance. So when a monolithic piece of nanocrystal is placed over the litz wire, the litz wire can only be connected to the cart-end circuit through the nanocrystal by opening the hole. Since nanocrystals have higher electrical conductivity, large losses and local overheating occur at the litz wire via due to eddy current effects. This not only affects the efficiency of the wireless charging device, but also causes great difficulty in heat dissipation of the vehicle-end product. Therefore, it is necessary to provide a further solution to the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be applied to high-power wireless via hole structure, wireless charging device and system that charge to overcome the not enough that exists among the prior art.
In order to solve the technical problem, the technical scheme of the utility model is that:
a via structure applied to high-power wireless charging comprises: the device comprises a magnetizer and a lead penetrating through the magnetizer;
the material of magnetizer is the nanocrystalline, the magnetizer has wire via hole region, via hole region offers and is used for the wire crosses the through-hole of line, still be provided with the magnetic medium on the inside wall face of through-hole, have the interval between the inside wall face of wire and through-hole that passes corresponding through-hole, the magnetic induction intensity between wire and the magnetizer satisfies: mu is B ═ mu0I/2 π x, where μ0And the magnetic induction intensity between the lead and the magnetizer is smaller than a preset magnetic induction intensity value.
As the utility model discloses a via hole structure's improvement, the through-hole is round hole, polygonal hole, oval-shaped hole or dysmorphism hole.
As the utility model discloses a via hole structure's improvement, the magnetic medium for combine in the inboard magnetic ring of through-hole.
As the utility model discloses a via hole structure's improvement, the magnetic conductivity of magnetic ring is between 100 10H/m, and the conductivity satisfies: 0.4 +/-0.1 Siemens/m.
As the utility model discloses a via hole structure's improvement, the magnetic ring sets up in the through-hole at place with nested mode.
As the utility model discloses a via hole structure's improvement, the wire is the litz line.
In order to solve the technical problem, the technical scheme of the utility model is that:
a wireless charging device, comprising: the conductive wire penetrates through the magnetizer according to the via hole structure.
In order to solve the technical problem, the technical scheme of the utility model is that:
a wireless charging system, comprising: the wireless charging device comprises a receiving end wireless charging device arranged on the vehicle-mounted side and a transmitting end wireless charging device arranged on the ground side;
the receiving end wireless charging device and the transmitting end wireless charging device are structurally the wireless charging devices.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a be applied to high-power wireless via hole structure that charges, through set up the magnetic ring of the low conductivity of low magnetic conductivity in through hole department, the litz wire passes from the magnetic ring, so reduces nanocrystalline loss and local overheat problem effectively.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic plan view of an embodiment of the via hole structure applied to high-power wireless charging 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.
As shown in fig. 1, an embodiment of the present invention provides a via hole structure applied to high-power wireless charging, which includes: a magnetic conductor 1 and a wire (not shown) passing through the magnetic conductor 1.
The magnetizer 1 is made of nanocrystalline, the magnetizer 1 is provided with a wire passing hole area, the wire passing area is provided with a through hole 11 for passing a wire, and a space is reserved between the wire passing through the corresponding through hole 11 and the inner side wall surface of the through hole 11. When the through holes 11 are multiple, the through holes are arranged according to the positions of the required wires. The shape of the through hole 11 can be set according to requirements, for example, the through hole 11 can be a circular hole, a polygonal hole, an elliptical hole, or a special-shaped hole. In one embodiment, the conductive wire is litz wire.
The magnetic medium 12 with low magnetic permeability is arranged on the inner side wall surface of the through hole 11, and the magnetic medium 12 with low magnetic permeability adopted at the litz line through hole mainly plays a role in isolating the litz line and the nanocrystal, so that the nanocrystal and the litz line are separated by the distance as far as possible, and the eddy current loss caused by the litz line is reduced to the minimum.
In one embodiment, the magnetic medium 12 with low magnetic permeability is a magnetic ring combined inside the through hole 11, the magnetic permeability of the magnetic ring is 100 ± 10H/m, and the electric conductivity satisfies the following conditions: 0.4 +/-0.1 Siemens/m. At this time, the through hole 11 is a circular hole. The outer diameter of the magnetic ring is matched with the round hole on the nanocrystalline, and the inner diameter is matched with the outer diameter of the litz line. Preferably, the magnetic ring is arranged in the through hole 11 in a nesting manner. Specifically, because the electrical conductivity of the magnetic ring is very low, eddy current only generates very small eddy current loss in the magnetic ring, so that the overall loss of the nanocrystalline material is reduced, and meanwhile, because the loss at the through hole is reduced, the problem of local overheating of the nanocrystalline at the position is also greatly improved.
The loss increase of the nanocrystalline at the litz line through hole is mainly generated by eddy current loss, the closer the nanocrystalline material is to the litz line, the higher the magnetic induction intensity in the nanocrystalline material is, the higher the eddy current is, and the larger the generated eddy current loss is. Conversely, the farther away the nanocrystal is from the litz line, the smaller the eddy current losses. Therefore, a larger round hole is designed on the surface of the nanocrystalline, so that the nanocrystalline material is far away from a litz line, a magnetic ring with proper size and low magnetic conductivity and electric conductivity is placed in the round hole, and the litz line penetrates out of the interior of the magnetic ring to be connected with a vehicle end circuit.
Thus, the magnetic induction between the litz line and the magnetizer 1 satisfies: mu is B ═ mu0I/2 π x, where μ0The magnetic induction intensity between the litz line and the magnetizer 1 is smaller than a preset magnetic induction intensity value. The preset magnetic induction intensity values may be: 130 mT.
Based on the same technical concept, the utility model also provides a wireless charging device, it includes: a magnetizer and a litz line, wherein the litz line penetrates through the magnetizer according to the via hole structure.
Based on the same technical concept, the utility model also provides a wireless charging system, it includes: the charging system comprises a receiving end wireless charging device installed on the vehicle side and a transmitting end wireless charging device installed on the ground side. The receiving end wireless charging device and the transmitting end wireless charging device are structurally the wireless charging devices.
To sum up, the utility model discloses a be applied to high-power wireless via hole structure that charges, through set up the magnetic ring of the low conductivity of low magnetic conductivity in through hole department, the litz line passes from the magnetic ring in, so reduce nanocrystalline loss and local overheat problem effectively.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a be applied to high-power wireless via hole structure that charges which characterized in that, via hole structure includes: the device comprises a magnetizer and a lead penetrating through the magnetizer;
the material of magnetizer is the nanocrystalline, the magnetizer has wire via hole region, via hole region offers and is used for the wire crosses the through-hole of line, still be provided with the magnetic medium on the inside wall face of through-hole, have the interval between the inside wall face of wire and through-hole that passes corresponding through-hole, the magnetic induction intensity between wire and the magnetizer satisfies: mu is B ═ mu0I/2 π x, where μ0And the magnetic induction intensity between the lead and the magnetizer is smaller than a preset magnetic induction intensity value.
2. The via structure applied to high-power wireless charging according to claim 1, wherein the through hole is a circular hole, a polygonal hole, an elliptical hole or a special-shaped hole.
3. The via structure applied to high-power wireless charging as claimed in claim 1, wherein the magnetic medium is a magnetic ring combined inside the through hole.
4. The via hole structure applied to high-power wireless charging as claimed in claim 3, wherein the magnetic permeability of the magnetic ring is within 100 ± 10H/m, and the conductivity satisfies the following conditions: 0.4 +/-0.1 Siemens/m.
5. The via hole structure applied to high-power wireless charging as claimed in claim 3, wherein the magnetic ring is disposed in the through hole in a nested manner.
6. The via structure applied to high-power wireless charging according to claim 1, wherein the conducting wire is a litz wire.
7. A wireless charging apparatus, comprising: a magnetizer and a conductive wire passing through the magnetizer according to the via-hole structure of any one of claims 1 to 6.
8. A wireless charging system, comprising: the wireless charging device comprises a receiving end wireless charging device arranged on the vehicle-mounted side and a transmitting end wireless charging device arranged on the ground side;
the structure of the receiving-end wireless charging device and the transmitting-end wireless charging device is the wireless charging device according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020285624.3U CN212210519U (en) | 2020-03-10 | 2020-03-10 | Via hole structure applied to high-power wireless charging, wireless charging device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020285624.3U CN212210519U (en) | 2020-03-10 | 2020-03-10 | Via hole structure applied to high-power wireless charging, wireless charging device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212210519U true CN212210519U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020285624.3U Expired - Fee Related CN212210519U (en) | 2020-03-10 | 2020-03-10 | Via hole structure applied to high-power wireless charging, wireless charging device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212210519U (en) |
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2020
- 2020-03-10 CN CN202020285624.3U patent/CN212210519U/en not_active Expired - Fee Related
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Granted publication date: 20201222 |