CN111313566A - Electromagnetic coupling energy transmission device with magnet - Google Patents
Electromagnetic coupling energy transmission device with magnet Download PDFInfo
- Publication number
- CN111313566A CN111313566A CN202010214804.7A CN202010214804A CN111313566A CN 111313566 A CN111313566 A CN 111313566A CN 202010214804 A CN202010214804 A CN 202010214804A CN 111313566 A CN111313566 A CN 111313566A
- Authority
- CN
- China
- Prior art keywords
- housing
- magnet
- magnetic
- magnetic pole
- magnet structure
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 title abstract description 25
- 238000010168 coupling process Methods 0.000 title abstract description 25
- 238000005859 coupling reaction Methods 0.000 title abstract description 25
- 230000005540 biological transmission Effects 0.000 title abstract description 19
- 239000000696 magnetic material Substances 0.000 claims abstract description 14
- 230000004907 flux Effects 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 4
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- 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
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
An electromagnetic coupling energy transmission device with a ring magnet is characterized by comprising a shell, a spiral coil, a first soft magnetic material and a magnet structure, wherein the magnet structure comprises at least one magnet unit, and one side of each magnet unit, which is close to the first side of the shell, is provided with two opposite magnetic poles.
Description
Technical Field
The invention belongs to the magnet structure design in an electromagnetic coupling energy transmission device, and particularly relates to a magnet structure design which is used for enabling the electromagnetic coupling energy transmission device and another electromagnetic coupling energy input device to be adsorbed through magnetic field attraction, has little influence on electromagnetic coupling energy transfer efficiency and power and does not change the minimum allowable size of an electromagnetic coupling energy output device.
Background
In practical applications, a user needs to attach the electromagnetic coupling energy output device to a housing of an electromagnetic coupling energy input device to be powered by a target, for example, to wirelessly charge a notebook computer, or attach the electromagnetic coupling energy input device to the electromagnetic coupling energy output, for example, to fix a mobile phone to a wireless charger in an automobile, and fix the wireless charger to an air outlet of the automobile.
The scheme of magnet attraction is adopted at present, all is with slice magnet setting in the outside of coil module, fixes inboard at the product shell side by side with the coil module. And the sheet-shaped magnets are all N poles on one side and S poles on the other opposite side, so that the magnets are far away from the coil module, the phenomenon that the transmission efficiency is reduced due to the fact that the magnets interfere with the magnetic field of the coil module is avoided, and the product volume is obviously increased. Therefore, the current technical scheme cannot be used on miniature products.
In addition, the strong magnetic field can also affect radio frequency signals, sensors and circuit signals of electronic products, so that if no shielding material is arranged on the periphery of the magnet, the strong magnet can affect the performance of the electronic products and even cause harm.
Therefore, a novel magnet structure needs to be designed, the size of the product is not changed, electromagnetic coupling energy transmission efficiency and power are guaranteed to meet the standard, other electrical properties of the product cannot be influenced, and the function of realizing adsorption through magnet attraction is achieved.
Disclosure of Invention
Therefore, the electromagnetic coupling energy transmission device with the magnet can be used as an electromagnetic coupling energy output device and an electromagnetic coupling energy input device, and under the condition that the size of the device is not changed, the electromagnetic coupling energy transmission efficiency and power meet the specification, other electrical properties of a product cannot be influenced, and the electromagnetic coupling energy transmission device with the magnet has the function of realizing adsorption by magnet attraction.
In order to achieve the above object, the present invention provides an electromagnetic coupling energy transmission device with a magnet, which is characterized by having a housing, a spiral coil, a soft magnetic material, and a magnet structure, wherein the magnet structure comprises at least one magnet unit, one side of each magnet unit close to the first side of the housing has two opposite magnetic poles, the first side of the housing is exposed, and the spiral coil, the soft magnetic material, and the magnet structure are arranged inside the second side of the housing or embedded in the housing.
When the projection of the magnet structure on the first side surface of the shell is positioned outside the outer contour line of the projection of the spiral coil on the first side surface of the shell, the magnet structure comprises at least two magnet units which are distributed in a ring shape and have a certain interval, and the interval between every two adjacent magnet units is not less than 1 mm. And a magnetic saturation region cannot be formed in the spacing region of not less than 1mm, so that magnetic flux required by electromagnetic coupling energy transmission can pass through the spacing region, and the energy transmission efficiency and power are prevented from being reduced.
When the projection of the magnet structure on the first side surface of the shell is positioned at the inner side of the inner contour line of the projection of the spiral coil on the first side surface of the shell, the two opposite magnetic poles of the magnet structure on the side surface close to the first side surface of the shell are distributed in concentric circles or horizontally, when the two opposite magnetic poles are distributed in concentric circles, the projection on the first side surface of the shell is that the magnetic pole A is positioned at the inner side of the magnetic pole B, when the two opposite magnetic poles are distributed in horizontal, the projection on the first side surface of the shell is that the magnetic pole A is positioned at one side of the magnetic pole B, and the magnetic pole A and the magnetic pole B are opposite magnetic fields. The two distribution modes effectively limit the magnetic field distribution of the magnet structure, avoid the generated magnetic saturation region from influencing a magnetic flux path required by electromagnetic coupling energy transfer, and avoid reducing energy transmission efficiency and power.
The magnetic structure of the electromagnetic coupling energy transmission device has the advantages that a large-range magnetic saturation area cannot be formed, so that the magnetic structure has a magnetic adsorption function, a magnetic flux path required by electromagnetic coupling energy transmission cannot be influenced, and high energy transmission efficiency and power are kept.
Drawings
Fig. 1 is an embodiment of a first magnet configuration of the present invention.
Fig. 2 is an embodiment of a second magnet configuration of the present invention.
Fig. 3 is a first embodiment of a magnet unit according to a first magnet structure embodiment of the present invention.
Fig. 4 shows a second embodiment of the magnet unit according to the first embodiment of the magnet structure of the present invention.
Fig. 5 is a third embodiment of the magnet unit according to the first magnet structure embodiment of the present invention.
Fig. 6 is a first embodiment of a second magnet configuration of the present invention.
Fig. 7 is a second embodiment of a second magnet configuration of the present invention.
Fig. 8 is a structural feature of a magnet unit according to a second magnet structure embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention and do not limit the application scope of the present invention, and it is obvious for a person skilled in the art to apply the present invention to other similar scenes according to the drawings without creative efforts; as used in this specification and the appended claims, the singular forms "a", "an", and/or "the" include plural referents unless the context clearly dictates otherwise. In general, the terms "comprises" or "comprising" merely indicate that steps and elements which are explicitly identified are included, that these steps and elements do not constitute an exclusive list, and that a method or apparatus may also comprise other steps or elements. The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment".
Referring to fig. 1, an embodiment of a first magnet structure of the present invention is shown, the electromagnetic coupling energy transmission device of the present invention includes a housing 1, a spiral coil 2, a first soft magnetic material 3, and a magnet structure 4, the magnet structure 4 includes at least one magnet unit 41, each magnet unit 41 has two opposite magnetic poles on one side near the first side of the housing 1, and the spiral coil 2, the soft magnetic material 3, and the magnet structure 4 are disposed inside the second side of the housing 1 or embedded in the housing. The projection of the magnet structure 4 on the first side of the housing 1 is located outside the outer contour line of the projection of the spiral coil 2 on the first side of the housing 1, and the magnet structure 4 is distributed annularly and comprises at least two magnet units 41, and the shortest distance d between any two adjacent magnet units 41 is greater than or equal to 1 mm. The first soft magnetic material 3 is used for guiding the magnetic flux direction, and the composition materials include but are not limited to silicon steel, ferrite, nanocrystalline and amorphous.
As shown in fig. 3, in the first embodiment of the magnet unit 41 according to the first magnet structure 4 of the present invention, the difference between the angle a and the angle B between the line connecting the two maximum points a and B of the magnetic induction of opposite magnetic poles on the side surface close to the first side surface of the housing 1 of any two magnet units 41 and the line connecting the center point C of the line connecting the two maximum points of the magnetic induction of opposite magnetic poles to the axially closest point D of the spiral coil is not more than 15 °.
As shown in fig. 4, in the second embodiment of the first embodiment of the magnet unit 41 according to the first magnet structure 4 of the present invention, all the magnet units 41 have the same magnetic pole a on the side close to the spiral coil 2 and the first side of the housing 1.
As shown in fig. 5, in the third embodiment of the first embodiment of the magnet unit 41 according to the first embodiment of the magnet structure 4 of the present invention, the two opposite magnetic poles a and B of all the magnet units 41 are concentrically arranged, and the magnetic pole a is inside the magnetic pole B in projection onto the first side surface of the housing 1.
Referring to fig. 2, an embodiment of a second magnet structure of the present invention is shown, the electromagnetic coupling energy transmission device of the present invention includes a housing 1, a spiral coil 2, a first soft magnetic material 3, and a magnet structure 4, the magnet structure 4 includes at least one magnet unit 41, each magnet unit 41 has two opposite magnetic poles on one side near the first side of the housing 1, and the spiral coil 2, the soft magnetic material 3, and the magnet structure 4 are disposed inside the second side of the housing 1 or embedded in the housing. The projection of the magnet arrangement 4 onto the first side of the housing 1 is located inside the inner contour of the projection of the helical coil 2 onto the first side of the housing 1. The first soft magnetic material 3 is used for guiding the magnetic flux direction, and the composition materials include but are not limited to silicon steel, ferrite, nanocrystalline and amorphous.
As shown in fig. 6, in the first embodiment of the second magnet structure 4 of the present invention, two opposite magnetic poles a and B on one side of the magnet structure 4 close to the first side of the housing 1 are concentrically distributed, and the magnetic pole a is located inside the magnetic pole B in projection on the first side of the housing.
As shown in fig. 7, in the second embodiment of the second magnet structure 4 of the present invention, two opposite magnetic poles a and B on a side of the magnet structure 4 close to the first side of the housing are horizontally distributed, and the magnetic pole a is located on one side of the magnetic pole B in projection on the first side of the housing.
As shown in fig. 8, the magnet unit 41 of the second embodiment of the magnet structure 4 of the invention is provided with the second soft magnetic material 31 on a surface of a side remote from the first side of the housing 1.
Claims (9)
1. The electromagnetically coupled energy transfer device of claim 1, comprising a housing, a helical coil, a first soft magnetic material, a magnet structure, a first side of said housing being exposed, said helical coil, soft magnetic material, magnet structure being disposed within a second side of said housing or embedded within said housing;
the magnet structure comprises at least one magnet unit, and one side surface of each magnet unit, which is close to the first side surface of the shell, is provided with two opposite magnetic poles;
the first soft magnetic material is used for guiding the magnetic flux trend, and the composition materials include but are not limited to silicon steel, ferrite, nanocrystalline and amorphous.
2. The magnet structure of claim 2, wherein the projection of the magnet structure of claim 1 on the first side of the housing is located outside the outer contour of the projection of the spiral coil on the first side of the housing, and the magnet structure is distributed annularly and comprises at least two magnet units, and the shortest distance d between any two adjacent magnet units is greater than or equal to 1 mm.
3. In claim 3, all the magnet units of claim 2 have the same magnetic pole a on the side adjacent to the spiral coil and the first side of the housing.
4. The angle between the line connecting the two maximum points of magnetic induction of opposite magnetic poles on the side surface close to the first side surface of the housing of any two magnet units in claim 2 and the line connecting the central point of the line connecting the two maximum points of magnetic induction of opposite magnetic poles and the nearest point on the axis of the spiral coil is not more than 15 degrees.
5. According to claim 5, the two opposite magnetic poles of all the magnet units in claim 2 are concentrically distributed, and in projection on the first side face of the housing, the magnetic pole A is positioned at the inner side of the magnetic pole B, and the magnetic pole A and the magnetic pole B are opposite magnetic fields.
6. The magnet structure of claim 1 projected onto the first side of the housing as recited in claim 6, wherein the projection of the magnet structure onto the first side of the housing is located inward of the inner contour of the projection of the helical coil onto the first side of the housing.
7. The magnet structure of claim 7, the magnet structure of claim 6, wherein the two opposite magnetic poles are concentrically arranged on a side surface close to the first side surface of the housing, and the magnetic pole A is positioned on the inner side of the magnetic pole B in projection on the first side surface of the housing, and the magnetic pole A and the magnetic pole B are opposite magnetic fields.
8. The magnet structure of claim 8, the two opposite magnetic poles on the side near the first side of the housing are horizontally distributed, and the projection on the first side of the housing has a magnetic pole a on one side of a magnetic pole B, and the magnetic pole a and the magnetic pole B are opposite magnetic fields.
9. A magnet unit of a magnet structure according to claim 9, claim 7 or claim 8, wherein a surface of a side of the magnet unit remote from the first side of the housing is provided with the second soft magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010214804.7A CN111313566A (en) | 2020-03-24 | 2020-03-24 | Electromagnetic coupling energy transmission device with magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010214804.7A CN111313566A (en) | 2020-03-24 | 2020-03-24 | Electromagnetic coupling energy transmission device with magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111313566A true CN111313566A (en) | 2020-06-19 |
Family
ID=71149845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010214804.7A Pending CN111313566A (en) | 2020-03-24 | 2020-03-24 | Electromagnetic coupling energy transmission device with magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111313566A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112803602A (en) * | 2020-12-29 | 2021-05-14 | 瑞声精密制造科技(常州)有限公司 | Electronic equipment and wireless charging system |
| CN112803603A (en) * | 2020-12-29 | 2021-05-14 | 瑞声精密制造科技(常州)有限公司 | Electronic equipment and wireless charging system |
| CN112865343A (en) * | 2021-03-23 | 2021-05-28 | 宁波微鹅电子科技有限公司 | Wireless power transmission device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015036154A1 (en) * | 2013-09-16 | 2015-03-19 | Robert Bosch Gmbh | Charging device, receiving device, system, and method for inductively charging a battery |
| CN206542698U (en) * | 2017-03-20 | 2017-10-03 | 广东小天才科技有限公司 | Magnetic type charging device and magnetic field interference prevention structure thereof |
| CN209072108U (en) * | 2018-11-16 | 2019-07-05 | 上海兀兀科技有限公司 | A kind of magnetic-type mobile power source of separation that can give mobile phone wireless and wired charging |
| CN211981579U (en) * | 2020-03-24 | 2020-11-20 | 邢益涛 | Electromagnetic coupling energy transmission device with magnet |
-
2020
- 2020-03-24 CN CN202010214804.7A patent/CN111313566A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015036154A1 (en) * | 2013-09-16 | 2015-03-19 | Robert Bosch Gmbh | Charging device, receiving device, system, and method for inductively charging a battery |
| CN206542698U (en) * | 2017-03-20 | 2017-10-03 | 广东小天才科技有限公司 | Magnetic type charging device and magnetic field interference prevention structure thereof |
| CN209072108U (en) * | 2018-11-16 | 2019-07-05 | 上海兀兀科技有限公司 | A kind of magnetic-type mobile power source of separation that can give mobile phone wireless and wired charging |
| CN211981579U (en) * | 2020-03-24 | 2020-11-20 | 邢益涛 | Electromagnetic coupling energy transmission device with magnet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112803602A (en) * | 2020-12-29 | 2021-05-14 | 瑞声精密制造科技(常州)有限公司 | Electronic equipment and wireless charging system |
| CN112803603A (en) * | 2020-12-29 | 2021-05-14 | 瑞声精密制造科技(常州)有限公司 | Electronic equipment and wireless charging system |
| CN112865343A (en) * | 2021-03-23 | 2021-05-28 | 宁波微鹅电子科技有限公司 | Wireless power transmission device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11881720B2 (en) | Electronic device, wireless charger and wireless charging system | |
| US9812875B2 (en) | Systems and methods for adjusting magnetic field distribution using ferromagnetic material | |
| CN106953419B (en) | Wireless power receiver with multiple receiver coils | |
| CN103782357B (en) | Power receiver side non-contact charge module and non-contact charge equipment | |
| KR101971091B1 (en) | Antenna module includeing sheilding layer and wireless power receiving apparatus | |
| CN111313566A (en) | Electromagnetic coupling energy transmission device with magnet | |
| US20140168019A1 (en) | Non-contact wireless communication coil, transmission coil, and portable wireless terminal | |
| KR102152541B1 (en) | Inductive module | |
| US10204734B2 (en) | Electronic device including non-contact charging module and near field communication antenna | |
| WO2013191896A1 (en) | Edge-emitting antennas for ultra slim wireless mobile devices | |
| TW201421849A (en) | Method for forming magnetic field space | |
| CN211981579U (en) | Electromagnetic coupling energy transmission device with magnet | |
| JP2015535676A (en) | Inductive energy transfer coil structure | |
| JP4900525B1 (en) | Non-contact charging module, transmitting-side non-contact charging device and receiving-side non-contact charging device provided with the same | |
| JP2018143063A (en) | Power transmission apparatus | |
| WO2019111848A1 (en) | Coil module | |
| WO2022141504A1 (en) | Magnetic suction apparatus and wireless charger | |
| US10903557B2 (en) | Antenna device and electronic device | |
| KR20150125812A (en) | Wireless power receiving apparatus and portable terminal having the same | |
| US20200335272A1 (en) | Wireless charging device and transmitting module and transmitter coil thereof | |
| JP2018143062A (en) | Power transmission apparatus | |
| JP2018153024A (en) | Transmission apparatus | |
| JP2002231545A (en) | Noncontact power unit | |
| US10141772B2 (en) | Communication device | |
| US20180269719A1 (en) | Power transmission device |
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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230613 Address after: 518000 509, building C, Xanadu Creative Park, Pingshan 1st Road, Taoyuan Street, Nanshan District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Qitian Taiyi Technology Co.,Ltd. Address before: 510000 Room 301, building 18, Nanjing Road courtyard, Nanjing Road, Liwan District, Guangzhou City, Guangdong Province Applicant before: Xing Yitao |