CN112803603A - Electronic equipment and wireless charging system - Google Patents
Electronic equipment and wireless charging system Download PDFInfo
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- CN112803603A CN112803603A CN202011608112.7A CN202011608112A CN112803603A CN 112803603 A CN112803603 A CN 112803603A CN 202011608112 A CN202011608112 A CN 202011608112A CN 112803603 A CN112803603 A CN 112803603A
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- 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
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
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- 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
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- 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
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- 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
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides electronic equipment and a wireless charging system. The induction coil assembly comprises an induction coil and a first positioning assembly which is circular. First locating component includes first magnet steel component, and first magnet steel component includes first annular magnet steel and first circular magnet steel, and first circular magnet steel and first annular magnet steel are outwards arranged by interior in proper order. The first circular magnetic steel is magnetized along the axial direction, the first annular magnetic steel is magnetized along the radial direction, and the diameter of the first circular magnetic steel is not smaller than the width of the first annular magnetic steel. Through setting up first soft magnetic component and first circular magnet steel and first annular magnet steel and arrange and magnetize the direction on first soft magnetic component, promoted first locating component's magnetic attraction, improve charge efficiency, reduced mutual electromagnetic interference between the electronic parts of first locating component inside and outside.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of wireless charging, in particular to electronic equipment and a wireless charging system.
[ background of the invention ]
The existing wireless charging system is provided with a first magnetic positioning assembly through an electronic device, a second magnetic positioning assembly through the wireless charging device, automatic alignment between a transmitting coil and an induction coil is realized through magnetic attraction of the first magnetic positioning assembly and the second magnetic positioning assembly between the electronic device and the wireless charging device, so that the charging efficiency is improved, magnetic leakage shielding is realized through the magnetic positioning assembly, and electronic components on the inner side and the outer side of the magnetic circular positioning assembly are prevented from being influenced by electromagnetism.
The alignment location difficulty among the wireless charging process, easy dislocation, and the charging efficiency that the dislocation can lead to reduces, the problem of the increase of generating heat. However, the first magnetic positioning component of the existing electronic device has a small magnetic attraction force due to structural limitation, and the magnetic leakage shielding effect is not good.
Therefore, it is necessary to provide an electronic device to solve the above problems.
[ summary of the invention ]
One objective of the present invention is to provide an electronic device, which can effectively improve the magnetic attraction and magnetic leakage shielding effect of the first positioning component.
One of the purposes of the invention is realized by adopting the following technical scheme:
an electronic device comprises a support member and an induction coil assembly arranged on the support member, wherein the induction coil assembly comprises an induction coil and a first positioning assembly, and the first positioning assembly is circular; the first positioning component comprises a first magnetic steel component; the first magnetic steel assembly comprises a first annular magnetic steel and a first circular magnetic steel, and the first circular magnetic steel and the first annular magnetic steel are sequentially arranged from inside to outside;
the first circular magnetic steel is magnetized along the axial direction, the first annular magnetic steel is magnetized along the radial direction, and the diameter of the first circular magnetic steel is not smaller than the width of the first annular magnetic steel.
In the electronic device provided by the embodiment of the present invention, the first positioning component includes a first soft magnetic component stacked with the first magnetic steel component, the first soft magnetic component includes a first bottom plate and a first side plate, and the first bottom plate and the first side plate jointly enclose a first accommodating cavity for accommodating the first magnetic steel component.
In the electronic device provided by the embodiment of the invention, the first magnetic steel component is positioned inside the induction coil.
In the electronic device provided by the embodiment of the invention, the number of the first magnetic steel assemblies is multiple, and the multiple first magnetic steel assemblies are uniformly distributed outside the induction coil.
In the electronic device provided by the embodiment of the present invention, the first magnetic steel assembly includes a first main magnetic steel assembly and a plurality of first auxiliary magnetic steel assemblies, the first main magnetic steel assembly is located inside the induction coil, and the plurality of first auxiliary magnetic steel assemblies are uniformly distributed outside the induction coil.
In the electronic device provided by the embodiment of the invention, the first soft magnetic component is a soft iron layer, a nanocrystalline layer or a soft magnetic layer.
It is another object of the present invention to provide a wireless charging system, which includes a wireless charging device and the above electronic device, wherein the wireless charging device includes a transmitting coil assembly, the transmitting coil assembly includes a transmitting coil, and the induction coil is configured to receive power from the transmitting coil;
the transmitting coil assembly further comprises a second positioning assembly surrounding the periphery of the transmitting coil, and the second positioning assembly is matched with the first positioning assembly; the second positioning assembly comprises a second soft magnetic assembly and a second magnetic steel assembly laminated with the second soft magnetic assembly, and the second magnetic steel assembly comprises second circular magnetic steel;
the second circular magnetic steel is magnetized along the axial direction, and when the wireless charging equipment is matched with the electronic equipment for use, the polarity of the second circular magnetic steel is the same as that of the first circular magnetic steel.
In the wireless charging system provided by the embodiment of the invention, the second soft magnetic component comprises a second bottom plate and a second side plate, and the second bottom plate and the second side plate jointly enclose a second containing cavity for containing the second magnetic steel component.
In the wireless charging system provided by the embodiment of the invention, the second magnetic steel assembly comprises second annular magnetic steel, the second annular magnetic steel is magnetized along the radial direction, and the second circular magnetic steel and the second annular magnetic steel are sequentially arranged from inside to outside; and the diameter of the second circular magnetic steel is not less than the width of the second annular magnetic steel.
In the wireless charging system provided by the embodiment of the invention, when the wireless charging device is used in cooperation with the electronic device, the polarity of the second annular magnetic steel is opposite to that of the first annular magnetic steel.
Compared with the prior art, the first soft magnetic component, the first circular magnetic steel and the first annular magnetic steel are arranged on the first soft magnetic component and are arranged and magnetized in the direction, the magnetic attraction force of the first positioning component is improved, the center alignment between the induction coil and the transmitting coil acting with the induction coil is facilitated, the charging efficiency is improved, the first positioning component can form a good shielding effect, and the electromagnetic interference between the electronic components on the inner side and the outer side of the first positioning component is reduced.
[ description of the drawings ]
Fig. 1 is a schematic diagram of a wireless charging system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an induction coil assembly according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic structural diagram of a transmitting coil assembly according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 4;
FIG. 6 is a schematic diagram of the engagement of the induction coil assembly with the transmitting coil assembly;
FIG. 7 is another schematic diagram of the induction coil assembly and the transmitter coil assembly;
FIG. 8 is another schematic diagram of the induction coil assembly and the transmitter coil assembly;
FIG. 9 is another schematic diagram of the induction coil assembly and the transmission coil assembly;
FIG. 10 is another schematic diagram of the mating of the induction coil assembly with the transmission coil assembly;
FIG. 11 is another schematic diagram of the mating of the induction coil assembly with the transmission coil assembly;
fig. 12 is another schematic diagram of the mating of the induction coil assembly with the transmission coil assembly.
The figures show that:
1000. a wireless charging system;
10. an electronic device;
100. an induction coil assembly; 110. an induction coil; 120. a first positioning assembly; 121. a first magnetic steel component; 121a, a first main magnetic steel component; 121b, a first secondary magnetic steel component; 1211. a first circular magnetic steel; 1212. a first annular magnetic steel; 122. a first soft magnetic component; 1221. a first base plate; 1222. a first side plate;
200. a support member;
20. a wireless charging device;
300. a transmit coil assembly; 310. a transmitting coil; 320. a second positioning assembly; 321. a second magnetic steel component; 3211. a second circular magnetic steel; 3212. a second annular magnetic steel; 322. a second soft magnetic component; 3221. a second base plate; 3222. a second side plate.
[ detailed description ] embodiments
The invention is further described with reference to the following figures and embodiments.
As shown in fig. 1, the present invention provides a wireless charging system 1000, which includes an electronic device 10 and a wireless charging device 20, where the wireless charging device 20 is configured to wirelessly charge the electronic device 10, the electronic device 10 includes an induction coil assembly 100, the induction coil assembly 100 includes an induction coil 110, the wireless charging device 20 includes a transmission coil assembly 300, the transmission coil assembly 300 includes a transmission coil 310, and the induction coil 110 is configured to receive power from the transmission coil 310.
For example, the electronic device 10 is a mobile phone, the wireless charging device 20 is a wireless charging cradle of the mobile phone, and when the mobile phone is placed on the wireless charging cradle of the mobile phone for charging, the transmitting coil 310 generates a certain current in the induction coil 110 through electromagnetic induction based on an alternating current with a certain frequency, so that energy is transferred from the transmitting end to the receiving end, and power is supplied to the mobile phone from the wireless charging cradle of the mobile phone.
Optionally, the induction coil assembly 100 further comprises a first positioning assembly 120, and the transmission coil assembly 300 further comprises a second positioning assembly 320 corresponding to the first positioning assembly 120. The first positioning component 120 and the second positioning component 320 are used for magnetically attracting and positioning the electronic device 10 and the wireless charging device 20, so that the electronic device 10 and the wireless charging device 20 are aligned by magnetic attraction, restoring force is provided in a certain area to automatically calibrate the center position, and the center alignment between the induction coil 110 and the transmitting coil 310 is ensured, so as to improve the charging efficiency, and in addition, the first positioning component 120 and the second positioning component 320 are also used for shielding magnetic fields in other directions to protect the rest of electronic components from electromagnetic interference.
Optionally, the first positioning assembly 120 and the second positioning assembly 320 are both circular.
Referring to fig. 1, in an alternative embodiment, the electronic device 10 includes a support member 200, and the induction coil assembly 100 is disposed on the support member 200. In particular, the support member 200 may be a back case of the electronic device 10.
Alternatively, the induction coil 110 is formed on the support member 200 by a bonding or laser process.
As shown in fig. 2 to 12, optionally, the first positioning assembly 120 includes a first soft magnetic assembly 122 and a first magnetic steel assembly 121 stacked with the first soft magnetic assembly 122, the first magnetic steel assembly 121 includes a first circular magnetic steel 1211 and a first annular magnetic steel 1212, and a diameter of the first circular magnetic steel 1211 is not smaller than a width of the first annular magnetic steel 1212; the first circular magnetic steel 1211 is magnetized along the axial direction x, and the first annular magnetic steel 1212 is magnetized along the radial direction y.
Illustratively, a side of the first circular magnetic steel 1211 facing the first soft magnetic component 122 is an S-pole, a side of the first circular magnetic steel 1211 facing away from the first soft magnetic component 122 is an N-pole, a side of the first annular magnetic steel 1212 facing the first circular magnetic steel 1211 is an S-pole, and a side of the first annular magnetic steel 1212 facing away from the first magnetic steel is an N-pole. It is understood that, in other embodiments, the polarity of the first magnetic steel and the polarity direction of the second magnetic steel may also be in other forms.
Referring to fig. 3, in an alternative embodiment, the first soft magnetic component 122 includes a first bottom plate 1221 and a first side plate 1222, and the first bottom plate 1221 and the first side plate 1222 together enclose a first accommodating cavity 1201 for accommodating the first magnetic steel component 121. It can be understood that the back and the side of the first magnetic steel component 121 are covered with soft magnetic materials, which can further shield the leaked magnetic field and improve the magnetic attraction force.
Optionally, the first soft magnetic component 122 is made of a metallic soft magnetic material or a ferrite soft magnetic material. The metal soft magnetic material can be selected from a soft iron layer, a nanocrystalline layer or a soft magnetic layer.
[ TABLE 1 ]
Table 1 is a comparison of the magnetic attraction force, the shielding layer outer average flux density, the maximum restoring force, and the 1/4 restoring region of the first positioning element 120 according to the present embodiment with those of the first positioning element 120 according to the prior art. The recovery area is defined as the area of the offset alignment position in the plane, and reflects the degree of automatic reset of positioning alignment. When the restoring force in the region is greater than 0.5N, the region is identified as a restoring region. That is, the magnetic attraction in the 1/4 recovery region is greater than 0.5N. As can be seen from table 1, in the first positioning element 120 according to the embodiment of the present invention, when the technical parameters are compared and aligned under the same ring size, the magnetic attraction is improved by 78.6% compared to the conventional solution, the shielding effect is improved by 10.4% compared to the conventional solution, and the maximum restoring force is improved by 195.2%. Specifically, the ratio of the cross-sectional diameter of the first circular magnetic steel 1211 to the cross-sectional width of the first annular magnetic steel 1212 in the first positioning assembly 120 is 2: 1.
according to the test, the ratio of the cross-sectional diameter of the first circular magnetic steel 1211 to the cross-sectional width of the first annular magnetic steel 1212 in the first positioning assembly 120 is 1: 1-3: 1. alternatively, the ratio of the cross-sectional diameter of the first circular magnetic steel 1211 to the cross-sectional width of the first annular magnetic steel 1212 may be 1: 1 or 2: 1 or 3: 1, specifically, the ratio of the cross-sectional diameter of the first circular magnetic steel 1211 to the cross-sectional width of the first annular magnetic steel 1212 is 2: 1, the magnetic attraction, restoring force and shielding effect of the first positioning component 120 are better.
Therefore, by arranging the first soft magnetic assembly 122 and the first circular magnetic steel 1211, the first annular magnetic steel 1212 and the arrangement and magnetization directions on the first soft magnetic assembly 122, the magnetic attraction of the first positioning assembly 120 is improved, and the center alignment between the induction coil 110 and the transmitting coil 310 acting with the induction coil 110 is facilitated, so that the charging efficiency is improved, the first positioning assembly 120 can form a good shielding effect, and the mutual electromagnetic interference between the electronic components on the inner side and the outer side of the first positioning assembly 120 is reduced.
Optionally, the number of the first magnetic steel assemblies 121 is multiple, and the multiple first magnetic steel assemblies 121 are uniformly distributed outside the induction coil 110; optionally, the number of the first magnetic steel assemblies 121 is one, and the first magnetic steel assemblies 121 are located on the inner periphery of the induction coil 110.
Referring to fig. 2, optionally, the first magnetic steel assembly 121 includes a first main magnetic steel assembly 121a located inside the induction coil 110 and a plurality of first auxiliary magnetic steel assemblies 121b uniformly distributed outside the induction coil 110, and the magnetic attraction and the recovery performance of the first magnetic steel assembly 121 are further enhanced by the combined action of the first main magnetic steel assembly 121a and the plurality of first auxiliary magnetic steel assemblies 121 b.
As shown in fig. 4 and 5, optionally, the second positioning assembly 320 includes a second soft magnetic assembly 322 and a second magnetic steel assembly 321 laminated with the second soft magnetic assembly 322, and the second magnetic steel assembly 321 includes a second circular magnetic steel 3211; the second circular magnetic steel 3211 is magnetized along the axial direction x, and when the wireless charging device 20 is used in cooperation with the electronic device 10, the polarity of the second circular magnetic steel 3211 is the same as that of the first circular magnetic steel 1211.
Illustratively, the side of the second circular magnetic steel 3211 facing the second soft magnetic component 322 is an N pole, and the side of the second circular magnetic steel 3211 facing away from the second soft magnetic component 322 is an S pole. It can be understood that, in other embodiments, the polarity directions of the first circular magnetic steel 1211 and the second circular magnetic steel 3211 may also be in other forms, so as to ensure that the polarity of the second circular magnetic steel 3211 is the same as the polarity of the first magnetic steel.
Referring to fig. 5, in an alternative embodiment, the second soft magnetic component 322 includes a second bottom plate 3221 and a second side plate 3222, and the second bottom plate 3221 and the second side plate 3222 together enclose a second accommodating cavity 3201 for accommodating the second magnetic steel component 321. It can be understood that the back and the side of the second magnetic steel component 321 are covered with soft magnetic materials, which can further shield the leaked magnetic field and improve the magnetic attraction.
Optionally, the second soft magnetic component 322 is made of a metallic soft magnetic material or a ferrite soft magnetic material. The metal soft magnetic material can be selected from a soft iron layer, a nanocrystalline layer or a soft magnetic layer.
In an optional embodiment, the second magnetic steel assembly 321 includes a second annular magnetic steel 3212, the second annular magnetic steel 3212 is magnetized along a radial direction, and when the wireless charging device 20 is used in cooperation with the electronic device 10, a polarity of the second annular magnetic steel 3212 is opposite to a polarity of the first annular magnetic steel 1212. Illustratively, the diameter of the second circular magnetic steel 3211 is not smaller than the width of the second annular magnetic steel 3212.
One side of the second annular magnetic steel 3212 facing the second circular magnetic steel 3211 is an N pole, and one side of the second annular magnetic steel 3212 away from the second circular magnetic steel 3211 is an S pole. It can be understood that, in other embodiments, the polarity direction of the second annular magnetic steel 3212 may also be in other forms, so that when the wireless charging device 20 is used in cooperation with the electronic device 10, the polarity of the second annular magnetic steel 3212 is opposite to that of the second magnetic steel. Specifically, when the wireless charging device 20 is used in cooperation with the electronic device 10, the position of the second annular magnetic steel 3212 corresponds to the position of the second magnetic steel.
Specifically, referring to fig. 6 to 12, the first magnetic steel component 121 and the second magnetic steel component 321 have various matching forms. The first magnetic steel assembly 121 at least includes a first circular magnetic steel 1211 and a first annular magnetic steel 1212, and the second magnetic steel assembly 321 at least includes a second circular magnetic steel 3211.
Exemplarily, fig. 6 shows that the first magnetic steel assembly 121 includes a first circular magnetic steel 1211 and a first annular magnetic steel 1212, and the second magnetic steel assembly 321 includes a matching manner of a second circular magnetic steel 3211, where the first annular magnetic steel 1212 is a partial ring (circular arc).
Exemplarily, fig. 7 shows that the first magnetic steel assembly 121 includes a first circular magnetic steel 1211 and a first annular magnetic steel 1212, and the second magnetic steel assembly 321 includes a matching manner of a second circular magnetic steel 3211, where the first annular magnetic steel 1212 is a complete ring.
Exemplarily, fig. 8 shows that the first magnetic steel assembly 121 includes a first circular magnetic steel 1211 and a first annular magnetic steel 1212, the second magnetic steel assembly 321 includes a matching manner of a second circular magnetic steel 3211 and a second annular magnetic steel 3212, the first annular magnetic steel 1212 and the second annular magnetic steel 3212 are both partial rings (circular arc), and when the wireless charging device 20 is used in cooperation with the electronic device 10, the position of the second annular magnetic steel 3212 corresponds to the position of the first annular magnetic steel 1212.
Exemplarily, fig. 9 shows that the first magnetic steel assembly 121 includes a first circular magnetic steel 1211 and a first annular magnetic steel 1212, the second magnetic steel assembly 321 includes a matching manner of a second circular magnetic steel 3211 and a second annular magnetic steel 3212, the first annular magnetic steel 1212 is a complete ring, and the second annular magnetic steel 3212 is a partial ring (circular arc).
Exemplarily, fig. 10 shows that the first magnetic steel assembly 121 includes a first circular magnetic steel 1211 and a first annular magnetic steel 1212, and the second magnetic steel assembly 321 includes a matching manner of a second circular magnetic steel 3211 and a second annular magnetic steel 3212, where the first annular magnetic steel 1212 is a partial annular (circular arc), and the second annular magnetic steel 3212 is a complete annular.
Exemplarily, fig. 11 shows that the first magnetic steel assembly 121 includes a first circular magnetic steel 1211, a first annular magnetic steel 1212, and a third magnetic steel 1213, and the second magnetic steel assembly 321 includes a second circular magnetic steel 3211 and a second annular magnetic steel 3212, where the first annular magnetic steel 1212 and the second annular magnetic steel 3212 are both complete annular.
Exemplarily, fig. 12 shows that the first magnetic steel assembly 121 includes a first circular magnetic steel 1211 and a first annular magnetic steel 1212, the second magnetic steel assembly 321 includes a second circular magnetic steel 3211 and a second annular magnetic steel 3212, the first annular magnetic steel 1212 and the second annular magnetic steel 3212 are both partial rings (circular arc), and when the wireless charging device 20 is used in cooperation with the electronic device 10, the first circular magnetic steel 1211 corresponds to the second circular magnetic steel 3211 in position, and the projection of the second annular magnetic steel 3212 on the first magnetic steel assembly 121 and the first annular magnetic steel 1212 are respectively located on two sides of the first circular magnetic steel 1211.
Through adopting the above technical scheme, first magnet steel assembly 121 includes at least that the direction of magnetizing is the first circular magnet steel 1211 of x axle and the direction of magnetizing is the first annular magnet steel 1212 of y axle, second magnet steel assembly 321 includes that the direction of magnetizing is the second circular magnet steel 3211 of x axle at least, the magnetic attraction between electronic equipment 10 and the wireless charging equipment 20 in wireless charging system 1000 is guaranteed to first circular magnet steel 1211 and second circular magnet steel 3211's interact makes the restoring force when electronic equipment 10 and the wireless charging equipment 20 in wireless charging system 1000 misplace to obtain guaranteeing simultaneously, can reduce the magnetic leakage of non-adsorption face in electronic equipment 10 and the wireless charging equipment 20 simultaneously. It can be understood that, when first magnetic steel assembly 121 is incomplete circular, and/or when second magnetic steel assembly 321 is incomplete circular, first magnetic steel assembly 121 is richer with second magnetic steel assembly 321's cooperation mode, and magnetic attraction and restoring force between electronic equipment 10 and the wireless charging of establishing are stronger, and the magnetic leakage quantity of non-adsorption face is still less, and electronic equipment 10 can cooperate the wireless charging equipment 20 that has not isostructure second magnetic steel assembly 321.
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. An electronic device comprises a support member and an induction coil assembly arranged on the support member, and is characterized in that the induction coil assembly comprises an induction coil and a first positioning assembly, and the first positioning assembly is circular; the first positioning component comprises a first magnetic steel component; the first magnetic steel assembly comprises a first annular magnetic steel and a first circular magnetic steel, and the first circular magnetic steel and the first annular magnetic steel are sequentially arranged from inside to outside;
the first circular magnetic steel is magnetized along the axial direction, the first annular magnetic steel is magnetized along the radial direction, and the diameter of the first circular magnetic steel is not smaller than the width of the first annular magnetic steel.
2. The electronic device of claim 1, wherein the first positioning assembly comprises a first soft magnetic assembly stacked with the first magnetic steel assembly, the first soft magnetic assembly comprising a first bottom plate and a first side plate, the first bottom plate and the first side plate together enclosing a first receiving cavity for receiving the first magnetic steel assembly.
3. The electronic device of claim 1, wherein the first magnetic steel component is located inside the induction coil.
4. The electronic device of claim 1, wherein the number of the first magnetic steel assemblies is multiple, and the multiple first magnetic steel assemblies are uniformly distributed outside the induction coil.
5. The electronic device of claim 1, wherein the first magnetic steel component comprises a first main magnetic steel component and a plurality of first sub magnetic steel components, the first main magnetic steel component is located inside the induction coil, and the plurality of first sub magnetic steel components are uniformly distributed outside the induction coil.
6. The electronic device of claim 1, wherein the first soft magnetic component is a soft iron layer, a nanocrystalline layer, or a soft magnetic layer.
7. A wireless charging system comprising a wireless charging device and the electronic device of any one of claims 1-6, the wireless charging device comprising a transmit coil assembly, the transmit coil assembly comprising a transmit coil, the inductive coil configured to receive power from the transmit coil;
wherein the transmitting coil assembly further comprises a second positioning assembly adapted to the first positioning assembly; the second positioning assembly comprises a second magnetic steel assembly, and the second magnetic steel assembly comprises second circular magnetic steel;
the second circular magnetic steel is magnetized along the axial direction, and when the wireless charging equipment is matched with the electronic equipment for use, the polarity of the second circular magnetic steel is the same as that of the first circular magnetic steel.
8. The wireless charging system of claim 7, wherein the second positioning assembly comprises a second soft magnetic assembly stacked with the second magnetic steel assembly, the second soft magnetic assembly comprising a second bottom plate and a second side plate, the second bottom plate and the second side plate together enclosing a second receiving cavity for receiving the second magnetic steel assembly.
9. The wireless charging system of claim 7, wherein the second magnetic steel assembly comprises a second annular magnetic steel, the second annular magnetic steel is magnetized along a radial direction, and the second circular magnetic steel and the second annular magnetic steel are sequentially arranged from inside to outside; and the diameter of the second circular magnetic steel is not less than the width of the second annular magnetic steel.
10. The wireless charging system of claim 7, wherein when the wireless charging device is used with the electronic device, the polarity of the second annular magnetic steel is opposite to the polarity of the first annular magnetic steel.
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| EP4231490A1 (en) * | 2022-02-17 | 2023-08-23 | Huawei Digital Power Technologies Co., Ltd. | Wireless charging module, electronic device, and charger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4231490A1 (en) * | 2022-02-17 | 2023-08-23 | Huawei Digital Power Technologies Co., Ltd. | Wireless charging module, electronic device, and charger |
| CN116979627A (en) * | 2022-04-22 | 2023-10-31 | 荣耀终端有限公司 | Wireless charging device, electronic equipment and electronic equipment protective housing |
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| Publication number | Publication date |
|---|---|
| CN112803603B (en) | 2023-08-08 |
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