CN217692816U - Wireless charging magnetism isolating sheet - Google Patents
Wireless charging magnetism isolating sheet Download PDFInfo
- Publication number
- CN217692816U CN217692816U CN202221098897.2U CN202221098897U CN217692816U CN 217692816 U CN217692816 U CN 217692816U CN 202221098897 U CN202221098897 U CN 202221098897U CN 217692816 U CN217692816 U CN 217692816U
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- China
- Prior art keywords
- magnetism
- isolating
- sheet body
- boss
- wireless charging
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- 230000005389 magnetism Effects 0.000 title claims abstract description 49
- 230000005291 magnetic effect Effects 0.000 claims abstract description 36
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 238000001746 injection moulding Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 10
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 239000006247 magnetic powder Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000002889 sympathetic effect Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses a wireless charging magnetism-isolating sheet, including being magnetism-isolating sheet body, the centre that magnetism-isolating sheet body is equipped with magnetism-isolating boss, and the edge that magnetism-isolating sheet body is equipped with magnetism-isolating convex edge, magnetism-isolating boss, magnetism-isolating convex edge and magnetism-isolating sheet body surround the space formation that forms and are used for laying the coil holding tank. The utility model discloses optimize traditional magnetism isolating sheet structure, increased at the peripheral edge of magnetism isolating sheet body and separated the magnetism chimb, increased simultaneously in the centre that separates the magnetic sheet body and separated the magnetism boss, can play simultaneously to the bottom and the inside and outside both sides of coil and separate the magnetism effect, it is more excellent to separate the magnetism effect to can reduce the magnetic leakage, help improving wireless charging efficiency.
Description
Technical Field
The utility model relates to a magnetic isolation sheet especially relates to a wireless magnetic isolation sheet that charges.
Background
The wireless charger charges the equipment by utilizing the electromagnetic wave induction principle, a sending end and a receiving end of the wireless charger are respectively provided with a coil, the sending end coil is connected with a wired power supply to generate an electromagnetic signal, and the receiving end coil induces the electromagnetic signal of the sending end, so that induced current is generated to charge the battery. In recent years, as a novel safe, convenient and fast charging technology, a wireless charging technology is more and more popular with consumers along with the successful application of the wireless charging technology in consumer electronic and electrical products such as mobile phones, computers, earphones and the like; both the technology and the yield are rapidly developed.
The wireless charging technology has two forms at present, which can be divided into a low-power wireless charging mode and a high-power wireless charging mode. The low-power wireless charging usually adopts an electromagnetic induction mode; the high-power wireless charging usually adopts a resonant mode, and the power supply equipment transmits energy to a power utilization device, and the device charges a battery by using the received energy and simultaneously provides the power utilization device for self operation. Whether the high-power wireless charging or the low-power wireless charger is adopted, a 220V power supply is changed into a sympathetic electromagnetic field, and the sympathetic electromagnetic field is changed into current charging after being changed again; however, when the sympathetic electromagnetic field meets the metal, an electron eddy current is generated, and the electron eddy current generates a skin effect on the surface of the metal, so that heat energy is generated on the metal, the charging efficiency is reduced, and electric energy is wasted, so that the defects of low charging efficiency, large heating value during charging and the like exist.
In order to improve the charging efficiency and ensure the use safety, the current common solution is to stick a layer of magnetism isolating sheet on the back of the coil of the transmitting end and the receiving end of the wireless charger, stick the magnetism isolating sheet on the antenna of the transmitting end to enhance the magnetic field intensity of the coil, and have higher magnetic convergence effect at the same time; the magnetic shielding sheet is arranged on the receiving end antenna, so that the attenuation interference of the metal conductor to the magnetic field can be prevented, the metal isolation effect is achieved, the energy waste is prevented, and the charging efficiency is improved. After 10 circles of copper coils are added into the magnetism isolating sheets, the inductance value reaches 7.0, and the magnetism isolating requirement of the wireless charger can be met.
However, the conventional magnetic isolation sheet material is generally a thin wafer of about 2mm, which is machined from a sintered ferrite magnetic sheet, an amorphous magnetic sheet, and the like, and has poor magnetic isolation effect, easy magnetic leakage, and influence on wireless charging efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a solve current tradition and be thin disc sheet's magnetism isolating sheet and separate the magnetic effect relatively poor, easy magnetic leakage can influence wireless charging efficiency's problem, provides a simple structure, can reduce the magnetic leakage, improves wireless charging efficiency's wireless magnetism isolating sheet that charges.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model discloses a wireless charging magnetism-isolating sheet, including being magnetism-isolating sheet body, the centre that magnetism-isolating sheet body is equipped with magnetism-isolating boss, and the edge that magnetism-isolating sheet body is equipped with magnetism-isolating convex edge, magnetism-isolating boss, magnetism-isolating convex edge and magnetism-isolating sheet body surround the space formation that forms and are used for laying the coil holding tank. The utility model discloses optimize traditional magnetism isolating sheet structure, increased at the peripheral edge of magnetism isolating sheet body and separated the magnetism chimb, increased simultaneously in the centre that separates the magnetic sheet body and separated the magnetism boss, can play simultaneously to the bottom and the inside and outside both sides of coil and separate the magnetism effect, it is more excellent to separate the magnetism effect to can reduce the magnetic leakage, help improving wireless charging efficiency.
Preferably, the magnetism isolating sheet body, the magnetism isolating boss and the magnetism isolating convex edge are of a homogeneous integral structure formed by one-time injection molding. The magnetic isolation sheet body, the magnetic isolation boss and the magnetic isolation convex edge are formed by injection molding through an injection molding machine at one time, subsequent procedures such as secondary sintering, film pasting, machining and the like are not needed, the production process is simple, the production efficiency is high, and the obtained product is high in strength, not easy to break and low in comprehensive cost; the production process of the magnetic shield sheet is a conventional production process in the field, wherein the magnetic shield sheet is obtained by one-step injection molding through an injection molding machine after soft magnetic powder and a binder (organic resin and the like) are mixed.
Preferably, the magnetic shielding sheet body is in a circular sheet shape.
Preferably, the thickness of the magnetic shielding sheet body is 2-4 mm.
Preferably, the magnetism isolating lug boss is a cylindrical lug boss, and the magnetism isolating lug boss is concentric with the magnetism isolating sheet body.
Preferably, the upper end face of the magnetic isolation boss is flush with the upper end face of the magnetic isolation convex edge.
Preferably, the magnetic shielding convex edge is provided with a coil lead opening.
Preferably, the magnetism isolating boss is provided with a positioning notch. The positioning notch is used for being matched with a positioning block in the wireless charger shell, so that the shell can be quickly and accurately positioned when the wireless charger is assembled, and the assembly efficiency is improved.
Therefore, the utility model discloses following beneficial effect has: optimize traditional magnetism isolating sheet structure, increased at the peripheral edge of magnetism isolating sheet body and separated the magnetism chimb, increased simultaneously in the centre of magnetism isolating sheet body and separated the magnetism boss, can play the effect of separating the magnetism simultaneously to the bottom and the inside and outside both sides of coil, it is more excellent to separate the magnetism effect to can reduce the magnetic leakage, help improving wireless charging efficiency.
Drawings
Fig. 1 is a plan view of the present invention.
Fig. 2 isbase:Sub>A sectional view taken in the direction ofbase:Sub>A-base:Sub>A in fig. 1.
Fig. 3 is an assembly diagram of the present invention and a coil.
In the figure: magnetic isolation sheet body 1, magnetic isolation boss 2, magnetic isolation convex edge 3, coil holding tank 4, coil lead wire mouth 5, location breach 6, coil 7.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, a wireless charging magnetism-isolating sheet shown in fig. 2, including being magnetism-isolating sheet body 1, magnetism-isolating sheet body is circular lamellar, magnetism-isolating sheet body thickness is 2mm, the middle part of magnetism-isolating sheet body is equipped with magnetism-isolating boss 2, magnetism-isolating boss is the cylinder boss, and magnetism-isolating boss is concentric with magnetism-isolating sheet body, the edge of magnetism-isolating sheet body is equipped with magnetism-isolating convex edge 3, the up end of magnetism-isolating boss flushes with the up end of magnetism-isolating convex edge, magnetism-isolating sheet body, magnetism-isolating boss and magnetism-isolating convex edge are the homogeneous integral structure of once injection molding by soft magnetic powder and binder (organic resin) through injection molding machine, magnetism-isolating boss, magnetism-isolating convex edge and magnetism-isolating sheet body surround the space that forms and form and are used for laying coil holding tank 4, be equipped with coil lead wire mouth 5 on the magnetism-isolating convex edge, be equipped with location breach 6 on the magnetism-isolating boss.
The production method of the utility model is as follows: mixing soft magnetic powder with binder (organic resin), and injection molding in one step.
After the coil 7 with the number of turns of 10 and the wireless charging magnetic shielding sheet are assembled (as shown in figure 3), the inductance value L is more than or equal to 7.0 through testing, and the effect of sintering the magnetic sheet can be completely achieved.
The above-described embodiment is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the invention as set forth in the claims.
Claims (8)
1. The utility model provides a wireless magnetism sheet that separates that charges, its characterized in that, is including being magnetism sheet body (1), the centre of magnetism sheet body is equipped with magnetism boss (2) that separates, and the edge of magnetism sheet body is equipped with magnetism chimb (3), magnetism boss, magnetism chimb and the space formation that magnetism sheet body surrounds and are used for laying coil holding tank (4) of separating.
2. The wireless charging magnetism isolating sheet according to claim 1, wherein the magnetism isolating sheet body, the magnetism isolating boss and the magnetism isolating convex edge are of a homogeneous integral structure formed by one-time injection molding.
3. The wireless charging magnetism-isolating sheet according to claim 1, wherein the magnetism-isolating sheet body is in a circular sheet shape.
4. The wireless charging magnetic shield sheet according to claim 1, 2 or 3, wherein the thickness of the magnetic shield sheet body is 2-4 mm.
5. The wireless charging magnetism-isolating sheet according to claim 3, wherein the magnetism-isolating boss is a cylindrical boss, and the magnetism-isolating boss is concentric with the magnetism-isolating sheet body.
6. The wireless charging magnetism-isolating sheet according to claim 1, wherein the upper end surface of the magnetism-isolating boss is flush with the upper end surface of the magnetism-isolating convex edge.
7. The wireless charging magnetism-isolating sheet according to claim 1, wherein the magnetism-isolating convex edge is provided with a coil lead opening (5).
8. The wireless charging magnetism isolating sheet according to claim 1, wherein the magnetism isolating boss is provided with a positioning notch (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221098897.2U CN217692816U (en) | 2022-05-07 | 2022-05-07 | Wireless charging magnetism isolating sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221098897.2U CN217692816U (en) | 2022-05-07 | 2022-05-07 | Wireless charging magnetism isolating sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217692816U true CN217692816U (en) | 2022-10-28 |
Family
ID=83737372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221098897.2U Active CN217692816U (en) | 2022-05-07 | 2022-05-07 | Wireless charging magnetism isolating sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217692816U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118713313A (en) * | 2024-08-28 | 2024-09-27 | 杭州神络医疗科技有限公司 | Wireless charging receiver manufacturing method and neural stimulator |
| WO2024208142A1 (en) * | 2023-04-04 | 2024-10-10 | 华为技术有限公司 | Electronic device and charging system |
-
2022
- 2022-05-07 CN CN202221098897.2U patent/CN217692816U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024208142A1 (en) * | 2023-04-04 | 2024-10-10 | 华为技术有限公司 | Electronic device and charging system |
| CN118713313A (en) * | 2024-08-28 | 2024-09-27 | 杭州神络医疗科技有限公司 | Wireless charging receiver manufacturing method and neural stimulator |
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