CN110518716B - Wireless charging device and wireless charger thereof - Google Patents
Wireless charging device and wireless charger thereof Download PDFInfo
- Publication number
- CN110518716B CN110518716B CN201910825075.6A CN201910825075A CN110518716B CN 110518716 B CN110518716 B CN 110518716B CN 201910825075 A CN201910825075 A CN 201910825075A CN 110518716 B CN110518716 B CN 110518716B
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- Prior art keywords
- lead
- magnetic core
- coils
- groove
- wireless charging
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- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/38—Auxiliary core members; Auxiliary coils or windings
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a wireless charging device and a wireless charger, wherein the wireless charging device comprises: the coil assembly comprises a plurality of coils, a first lead, a second lead and a magnetic plate, wherein the magnetic plate is provided with a lead groove. According to the technical scheme, the lead grooves are formed in the concave mode on the surfaces of the magnetic plates facing the coils, the first lead penetrates through the lead grooves and extends to the outside of the magnetic plates, the lead grooves are formed in the magnetic plates, the size of the lead grooves is enough to accommodate the first lead of the coils, the bottoms of the lead grooves are the magnetic plates, the first lead is guaranteed to be positioned on the magnetic plates, the integral integrity of the magnetic plates is guaranteed, when the coils receive energy (namely electric energy) remotely, the problems of concentrated energy dissipation and local excessive heating at the lead grooves are prevented, meanwhile, the magnetic plates and the coils are guaranteed to be in a completely attached state, the energy dissipation and electromagnetic interference are effectively reduced, and the transmission efficiency is improved.
Description
Technical Field
The invention relates to the field of wireless charging, in particular to a wireless charging device and a wireless charger thereof.
Background
The wireless charging is a development trend of a future charging mode, a charging gun is not required to be plugged and unplugged in the use process, the wireless charging device is clean and tidy, and the wireless charging device has the advantages of convenience, contactless contact, no discharging ignition and the like, and is characterized by charging along with discharging.
For the vehicle-mounted wireless charging receiving device, the power of the vehicle-mounted wireless charging device relates to 3.3KW/7KW/11KW/20KW/30KW or more power (the power is according to IEC national standard or the like), one of two wire outlet ends of the coil always needs to pass through the magnetic core in the winding process and is connected with an external part, so that the magnetic core cannot be completely closed by the wire outlet method, and when the wireless charging device is used, partial energy at the wire outlet end is concentrated and lost, so that the transmission efficiency of wireless charging cannot be improved.
Disclosure of Invention
The invention mainly aims to provide a wireless charging device and a wireless charger thereof, and aims to solve the technical problems that after a winding wire outlet end is led out of a magnetic core, the magnetic core cannot be completely sealed, so that energy is concentrated and dissipated in the using process, and the wireless charging transmission efficiency cannot be improved.
In order to achieve the above object, the present invention provides a wireless charging device, comprising: the coils are formed by conducting wires in a spiral mode in a self-winding mode, a first lead wire is led out from the innermost coil, and a second lead wire is led out from the outermost coil;
the magnetic plate is provided with a plurality of coils, lead grooves are formed in the inward concave mode of the surfaces of the magnetic plate facing the coils, and the first leads penetrate through the lead grooves and extend to the outside of the magnetic plate.
Preferably, the magnetic plate includes: the main magnetic core is provided with a notch area for accommodating the first lead;
the auxiliary magnetic core is arranged on the surface of the main magnetic core, which is away from the coil, and the gap area is covered by the auxiliary magnetic core to form the wire guide groove.
Preferably, the main magnetic core is further provided with a wire outlet groove, and the second lead is arranged in the wire outlet groove and led out of the main magnetic core.
Preferably, it further comprises: a housing; the shell is provided with a storage groove, and the main magnetic core is arranged in the storage groove.
Preferably, it further comprises: a bottom plate; the bottom plate is provided with a clamping groove which is communicated with the storage groove.
Preferably, the shell is provided with a plurality of ring grooves, and the ring grooves are used for placing a plurality of coils.
Preferably, the main magnetic core and the auxiliary magnetic core are mutually bonded through glue.
Preferably, the size of the housing is the same as the size of the base plate.
Preferably, the housing is made of a non-metallic material.
The invention also provides a wireless charger, which comprises 2 wireless charging devices, wherein any one of the wireless charging devices is a transmitting coil or a receiving coil.
According to the technical scheme, the lead grooves are formed in the concave mode on the surfaces of the magnetic plates facing the coils, the first lead wires penetrate through the lead grooves and extend to the outside of the magnetic plates, namely, one lead groove is formed in each magnetic plate, the size of the lead groove is enough to accommodate the first lead wires of the coils, the bottom of each lead groove is the magnetic plate, the first lead wires are guaranteed to be positioned on the magnetic plate, the integral integrity of the magnetic plate is guaranteed, when the coils receive energy (namely electric energy) remotely, the problems of concentrated energy dissipation and local excessive heating at the lead grooves are prevented, meanwhile, the magnetic plate and the coils are in a completely attached state, the first lead wires are guaranteed to be positioned on the magnetic plate, the integral integrity of the magnetic plate is guaranteed, the energy dissipation and electromagnetic interference are effectively reduced, and the transmission efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of a wireless charging device according to the present invention;
FIG. 2 is a cross-sectional view at K-K of FIG. 1;
FIG. 3 is an enlarged view of a portion of the portion of FIG. 2 at M;
FIG. 4 is a cross-sectional view taken at Q-Q of FIG. 1;
fig. 5 is a partial enlarged view of N in fig. 4.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 10 | Coil | 11 | First lead wire |
| 12 | Second lead | 20 | Main magnetic core |
| 30 | Auxiliary magnetic core | 40 | Outer casing |
| 50 | Bottom plate | A | Wire guiding groove |
| B | Wire outlet slot | C | Storage tank |
| D | Clamping groove | E | Annular groove |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a wireless charging device.
In an embodiment of the present invention, as shown in fig. 1 to 5, the wireless charging device includes: a plurality of coils 10 formed by a wire self-winding in a spiral manner, a first lead 11 being drawn from the innermost coil 10, and a second lead 12 being drawn from the outermost coil 10; a magnetic plate (not labeled in the figure), on which the plurality of coils 10 are arranged, a lead groove a is concavely formed on the surface of the magnetic plate facing the plurality of coils 10, and the first lead 11 is arranged in the lead groove a in a penetrating way and extends to the outside of the magnetic plate;
in winding, a plurality of coils are formed by sequentially winding a metal wire inwards step by step, so that a wire section is formed on the coil 10 nearest to the center of the coil 10, the wire section is a first lead 11 of the coil 10, and a wire section outside the coil 10 is a second lead 12, so that the first lead 11 at the center of the coil 10 needs to be led out of the magnetic plate through the magnetic plate to be connected with corresponding external equipment, i.e. a notch for placing the first lead 11 of the coil 10 needs to be formed on the magnetic plate, the notch causes the magnetic plate not to be completely in a closed state, and when the coil 10 is subjected to remote energy (i.e. electric energy), the first lead 11 of the coil 10 can form a problem of energy leakage at the notch, so that energy is concentrated and lost. To sum up, in order to prevent the problem of the concentrated dissipation of energy, the invention forms the lead groove a in the concave way on the surface of the magnetic plate facing the coils 10, the first lead 11 is arranged in the lead groove a in a penetrating way and extends to the outside of the magnetic plate, that is, a lead groove a is arranged on the magnetic plate, the size of the lead groove a is enough to accommodate the first lead 11 of the coil 10, the bottom of the lead groove a is still the magnetic plate, the lead groove a is only provided with one opening, the first lead 11 is ensured to be positioned on the magnetic plate, the integral integrity of the magnetic plate is ensured, the problems of concentrated dissipation of energy and local excessive heating at the position of the lead groove a are prevented when the coil 10 receives energy (i.e. electric energy) remotely, and meanwhile, the magnetic plate and the coil 10 are ensured to be in a completely attached state, so that the first lead 11 is in a completely magnetic core closed state in the lead groove a, thereby effectively reducing the energy dissipation and electromagnetic interference, and improving the transmission efficiency.
Specifically, the magnetic plate includes: a main magnetic core 20, wherein a notch area for accommodating the first lead 11 is formed on the main magnetic core 20; the auxiliary magnetic core 30 is disposed on the surface of the main magnetic core 20 facing away from the coil 10, and covers the notch area to form the lead groove a. Based on the above structure, in order to facilitate processing of the magnetic plate, the magnetic plate is divided into the main magnetic core 20 and the auxiliary magnetic core 30, the auxiliary magnetic core 30 is covered on the main magnetic core 20 and is positioned at the lead slot A, the lead slot A is completely covered, the notch area and the auxiliary magnetic core 30 form the lead slot A, the lead slot A forms a four-side closed cavity, only the first lead 11 of the coil 10 is allowed to be led out of the main magnetic core 20, when the coil 10 receives energy (namely electric energy) remotely, the problems of concentrated energy dissipation and local excessive heating at the lead slot A are prevented, meanwhile, the main magnetic core 20 at the lead slot A is repaired through the auxiliary magnetic core 30, the energy dissipation and electromagnetic interference are effectively reduced, and the transmission efficiency is improved under the condition that the main magnetic core 20 and the coil 10 are completely attached;
in addition, the main magnetic core 20 and the auxiliary magnetic core 30 may be made of the same material, and when the auxiliary magnetic core 30 is covered on the main magnetic core 20, the transmission efficiency can be ensured.
Specifically, the main magnetic core 20 is further provided with a wire outlet slot B, and the second lead 12 is disposed in the wire outlet slot B and led out to the outside of the main magnetic core 20. A slot may be formed in the main core 20 below the second lead 12 of the coil 10 to facilitate the wire-out operation of the second lead 12 of the coil 10.
Specifically, the wireless charging device further includes: a housing 40; the housing 40 is provided with a storage slot C, and the main magnetic core 20 is disposed in the storage slot C. In order to further improve the stability between the main core 20 and the plurality of coils 10, the main core 20 is engaged in the storage groove C, thereby further improving the stability between the main core 20 and the plurality of coils 10.
Specifically, the wire charging device further includes: a bottom plate 50; the bottom plate 50 is provided with a clamping groove D, and the clamping groove D is communicated with the storage groove C. In order to fix the auxiliary magnetic core conveniently, the clamping groove D is formed in the bottom plate 50, the auxiliary magnetic core 30 is clamped in the clamping groove D, and stability between the Gao Fu magnetic core 30 and the main magnetic core 20 is improved.
Specifically, the casing 40 is provided with a plurality of ring grooves E, and the ring grooves E are used for placing a plurality of coils 10. In order to facilitate fixing the plurality of coils 10, a plurality of ring grooves E may be formed on the housing 40, so that the plurality of coils 10 are engaged in the corresponding ring grooves E, thereby improving the stability between the plurality of coils 10 and the main magnetic core 20.
Specifically, the main core 20 and the auxiliary core 30 are adhered to each other by glue. To improve the stability between the main core 20 and the auxiliary core 30, the main core 20 and the auxiliary core 30 are bonded by some glue dedicated to bonding the magnets.
Specifically, the size of the housing 40 is the same as the size of the bottom plate 50. In order to optimize the whole wireless charging device, the size of the housing 40 is the same as that of the bottom plate 50, so that the housing 40 and the bottom plate 50 are integrated after being attached, and the whole wireless charging device is more attractive.
Specifically, the housing 40 is made of a nonmetallic material. The housing 40 is made of a non-metal material, such as an insulating material such as a plastic material, so as to prevent the wireless charging device from leaking.
The invention also provides a wireless charger, which comprises 2 wireless charging devices according to any one of the above embodiments, and the specific structure of the wireless charging device refers to the above embodiments, and because the wireless charger adopts all the technical schemes of all the above embodiments, the wireless charger has at least all the beneficial effects brought by the technical schemes of the above embodiments, and will not be described in detail herein, wherein any one of the wireless charging devices is a transmitting coil or a receiving coil.
The wireless charging device of the invention can be used as a transmitting coil or a receiving coil.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (6)
1. A wireless charging device, comprising:
the coils are formed by conducting wires in a spiral mode in a self-winding mode, a first lead wire is led out from the innermost coil, and a second lead wire is led out from the outermost coil;
the magnetic plate comprises a main magnetic core and an auxiliary magnetic core, the plurality of coils are arranged on the main magnetic core, a notch area and an outlet groove are formed in the main magnetic core, the notch area is used for accommodating the first lead, and the second lead is arranged in the outlet groove and led out of the main magnetic core; the auxiliary magnetic core is arranged on the surface, away from the coils, of the main magnetic core so that the main magnetic core is completely attached to the coils;
the shell is provided with a storage groove, and the main magnetic core is arranged in the storage groove; and
the bottom plate is provided with a clamping groove, the clamping groove is communicated with the storage groove, and the auxiliary magnetic core is clamped in the clamping groove;
wherein, the auxiliary magnetic core is entirely covered on the notch area to form a lead groove, so that the lead groove is formed into a closed cavity around; the first lead wire penetrates through the lead wire groove and extends to the outside of the main magnetic core, and the auxiliary magnetic core covers part of the wire outlet groove.
2. The wireless charging device of claim 1, wherein a plurality of ring grooves are provided on the housing, the plurality of ring grooves being for placing a plurality of the coils.
3. The wireless charging device of claim 1, wherein the primary magnetic core and the secondary magnetic core are bonded to each other by glue.
4. The wireless charging device of claim 1, wherein the housing is the same size as the base plate.
5. The wireless charging device of any of claims 1-4, wherein the housing is fabricated from a non-metallic material.
6. A wireless charger comprising 2 wireless charging devices according to any one of claims 1-5, any one of which is a transmitting coil or a receiving coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910825075.6A CN110518716B (en) | 2019-08-30 | 2019-08-30 | Wireless charging device and wireless charger thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910825075.6A CN110518716B (en) | 2019-08-30 | 2019-08-30 | Wireless charging device and wireless charger thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110518716A CN110518716A (en) | 2019-11-29 |
| CN110518716B true CN110518716B (en) | 2023-11-03 |
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ID=68629545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910825075.6A Active CN110518716B (en) | 2019-08-30 | 2019-08-30 | Wireless charging device and wireless charger thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110518716B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431239A (en) * | 2020-04-20 | 2020-07-17 | 蓝沛光线（上海）电子科技有限公司 | Wireless charging module and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4835786B1 (en) * | 2010-12-01 | 2011-12-14 | パナソニック株式会社 | Non-contact charging module and non-contact charging device |
| CN102957216A (en) * | 2011-08-19 | 2013-03-06 | 台湾东电化股份有限公司 | Wireless power transmission induction plate structure and process thereof |
| CN203415393U (en) * | 2011-02-01 | 2014-01-29 | 松下电器产业株式会社 | Non-contact charging module, non-contact charging equipment and power-receiving-side electronic equipment |
| CN203481927U (en) * | 2013-08-16 | 2014-03-12 | 东莞市金唐电子科技有限公司 | Coil structure of wireless charger |
| CN208028662U (en) * | 2018-04-18 | 2018-10-30 | 东莞市安汇电子有限公司 | efficient wireless charging structure |
-
2019
- 2019-08-30 CN CN201910825075.6A patent/CN110518716B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4835786B1 (en) * | 2010-12-01 | 2011-12-14 | パナソニック株式会社 | Non-contact charging module and non-contact charging device |
| CN203415393U (en) * | 2011-02-01 | 2014-01-29 | 松下电器产业株式会社 | Non-contact charging module, non-contact charging equipment and power-receiving-side electronic equipment |
| CN102957216A (en) * | 2011-08-19 | 2013-03-06 | 台湾东电化股份有限公司 | Wireless power transmission induction plate structure and process thereof |
| CN203481927U (en) * | 2013-08-16 | 2014-03-12 | 东莞市金唐电子科技有限公司 | Coil structure of wireless charger |
| CN208028662U (en) * | 2018-04-18 | 2018-10-30 | 东莞市安汇电子有限公司 | efficient wireless charging structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110518716A (en) | 2019-11-29 |
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