CN110417127B - Wireless charging equipment - Google Patents
Wireless charging equipment Download PDFInfo
- Publication number
- CN110417127B CN110417127B CN201810399018.1A CN201810399018A CN110417127B CN 110417127 B CN110417127 B CN 110417127B CN 201810399018 A CN201810399018 A CN 201810399018A CN 110417127 B CN110417127 B CN 110417127B
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- CN
- China
- Prior art keywords
- panel
- charging coil
- coil
- charging
- power receiving
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Classifications
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- 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
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
-
- 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
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
Abstract
The invention discloses a wireless charging device, comprising: a magnetic conductive plate; the charging coil is arranged on the magnetic conduction plate; the power receiving device comprises a charging coil, a matching panel, a power receiving device and a power receiving device, wherein the matching panel is positioned above the charging coil and used for bearing the power receiving device, and the matching panel is contacted with part of the charging coil and matched with the charging coil to form a heat dissipation channel. Through set up the heat dissipation passageway between joining in marriage the panel and some charging coil, the generated heat of charging coil that has loaded the electric current can distribute away through the heat dissipation passageway to can reduce the heat of transmission to on the power receiving equipment, avoid the power receiving equipment because overheated and influence the charging.
Description
Technical Field
The invention relates to the technical field of wireless charging, in particular to wireless charging equipment.
Background
Current wireless charging devices generally include a docking panel for carrying a powered device, which may be a device to be charged, such as a smartphone, a medical instrument, and a charging coil located below the docking panel. The power receiving device is internally provided with a power receiving coil, when the power receiving device is placed on the matching panel, the power receiving coil is aligned with the charging coil, and electric energy in the wireless charging device can be transmitted into the power receiving device by utilizing electromagnetic induction phenomenon between the two coils so as to realize wireless charging of the power receiving device.
However, in the prior art, in order to ensure the efficiency of wireless charging, the distance between the power receiving coil and the charging coil is required to be very close, but when the wireless charging device charges the power receiving device, the charging coil loaded with current generates a large amount of heat, and the heat generated by the charging coil is easily transmitted to the power receiving device through the adapter panel, so that the normal operation of charging is seriously affected by the overheat of the power receiving device.
Disclosure of Invention
An object of the embodiment of the present invention is to provide a wireless charging device, which can reduce heat transferred to a power receiving device when the wireless charging device charges the power receiving device.
To achieve the above object, the present invention provides a wireless charging apparatus comprising:
a magnetic conductive plate;
the charging coil is arranged on the magnetic conduction plate;
the power receiving device comprises a charging coil, a matching panel, a power receiving device and a power receiving device, wherein the matching panel is positioned above the charging coil and used for bearing the power receiving device, and the matching panel is contacted with part of the charging coil and matched with the charging coil to form a heat dissipation channel.
In an embodiment of the present invention, the charging coil includes an upper surface facing the mating panel, the upper surface being concave; the mating panel is in contact with an outer edge of the charging coil.
In an embodiment of the present invention, the outer edge of the charging coil has a plurality of gaps arranged at intervals, and the outer edge between adjacent gaps is in contact with the mating panel.
In an embodiment of the present invention, the charging coil includes a coil protrusion protruding toward the mating panel, and the coil protrusion is in contact with the mating panel.
In an embodiment of the present invention, the mating panel includes a panel protrusion protruding toward the charging coil, and the panel protrusion contacts the charging coil.
In an embodiment of the present invention, the number of the panel protrusions is plural and the panel protrusions are annularly arranged, and the plural panel protrusions are in contact with the outer edge of the charging coil.
In an embodiment of the present invention, the number of the panel protrusions is plural and the panel protrusions are arranged in an array, and the plural panel protrusions are in contact with the charging coil.
In an embodiment of the invention, the magnetic conductive plate includes a middle portion for carrying the charging coil and a peripheral portion extending from a peripheral side of the middle portion toward the mating panel.
In the embodiment of the invention, the heat dissipation channel is arranged between the matching panel and part of the charging coils, and the heat generated by the charging coils loaded with current can be dissipated through the heat dissipation channel, so that the heat transmitted to the power receiving equipment can be reduced, and the influence of overheat of the power receiving equipment on charging is avoided.
To achieve the above object, the present invention provides another wireless charging apparatus comprising:
a magnetic conductive plate;
the charging coil is arranged on the magnetic conduction plate;
the adapter panel is positioned above the charging coil;
the heat insulation layer is arranged on the charging coil and is contacted with the matching panel.
In one embodiment of the present invention, the charging coil includes an upper surface facing the heat insulation layer, the upper surface being concave.
In the embodiment of the invention, the heat insulation layer is arranged between the charging coil and the matching panel, and the heat insulation layer is used for insulating the heat transmitted to the matching panel by the charging coil, so that the heat transmitted to the powered device can be reduced, and the powered device is prevented from influencing charging due to overheating.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
fig. 1 is a schematic structural diagram of a wireless charging device and a power receiving device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a wireless charging device and a powered device according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments 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.
Fig. 1 is a schematic structural diagram of a wireless charging device and a power receiving device according to an embodiment of the present invention. Referring to fig. 1, the power receiving apparatus 200 is placed above the wireless charging apparatus 100 to perform wireless charging by the wireless charging apparatus 100. The powered device 200 may be various devices to be charged, such as a smart phone, a medical device, etc., and the wireless charging device 100 may be integrated into various living or industrial scenes according to the type and size of the powered device 200, which is not described herein.
The wireless charging device 100 may include a magnetic conductive plate 10, a charging coil 20, and a mating face plate 30. Wherein the charging coil 20 is disposed above the magnetic conductive plate 10 and is stabilized by the support of the magnetic conductive plate 10. The magnetic conductive plate 10 is made of a magnetic material, and the magnetic conductive plate 10 can adjust the magnetic field formed by the charging coil 20 loaded with current so that the magnetic field is more convergent with respect to the magnetic conductive plate 10. The matching panel 30 is located above the charging coil 20, the matching panel 30 is approximately flat, the power receiving device 200 is placed above the matching panel 30, the coil (not shown) in the power receiving device 200 can be aligned with the charging coil 20 (the specific method is not described here), and wireless charging of the power receiving device 200 is achieved through electromagnetic induction between the two coils.
Of course, in other embodiments of the present invention, the wireless charging device 100 may further include other modules, such as a base for installing the wireless charging device 100, a control circuit for adjusting the current on the charging coil 20, etc., which may be added or subtracted according to the usage scenario of the wireless charging device 100, and these modules are not focused on by the invention and are not described herein.
The mating panel 30 contacts a portion of the charging coil 20, and the mating panel 30 cooperates with the charging coil 20 to form a heat dissipation channel 40. Since only a part of the charging coil 20 is in contact with the mating panel 30, most of the heat generated by the charging coil 20 loaded with current is dissipated through the heat dissipation channel 40, reducing the amount of heat transferred to the powered device 200. Alternatively, as an example, the heat dissipation channel 40 may also extend directly beyond the wireless charging device 40 to drain heat outward.
In the embodiment of the present invention, the charging coil 20 includes an upper surface 21 facing the mating panel 30, the upper surface 21 is substantially concave, and the charging coil 20 is substantially bowl-shaped, and the closer to the center of the upper surface 21, the further the charging coil 20 is away from the mating panel 30. In practical application, only the peripheral charging coil 20 contacts the mating panel 30, and a heat dissipation channel 40 is formed between the central charging coil 20 and the mating panel 30. In this process, the heat generated by the charging coil 20 located at the periphery is directly transferred to the mating panel 30, and the heat generated by the charging coil 20 located at the center directly enters the heat dissipation channel 40.
It should be noted that, since the charging coil 20 is configured in a bowl shape with a concave middle, the peripheral coils of the charging coil 20 are more, the central coils are fewer, the magnetic field formed by the charging coil 20 in the bowl shape is more convergent compared to the flat charging coil 20, the distance that the charging coil 20 can perform effective charging is greater, and the wireless charging efficiency of the power receiving apparatus 200 located on the mating panel 30 can be ensured even if the distance of the mating panel 30 relative to the charging coil 20 is properly increased.
In practical application, by arranging the heat dissipation channel 40 and enlarging the distance between the charging coil 20 and the mating panel 30, the wireless charging device can realize the consideration of wireless charging efficiency and heat dissipation requirements, and has wide application prospect for some heat sensitive powered devices, such as some miniaturized medical devices.
Of course, in other embodiments of the present invention, the charging coil 20 may also be formed with a plurality of gaps (not shown) arranged at intervals, and the outer edges between the adjacent gaps are in contact with the mating panel 30. The heat in the heat dissipation channel 40 can be better diffused outside the charging coil 20 by utilizing the notches, so that the heat dissipation capability of the charging coil is improved.
Even in other embodiments, the charging coil 20 may be provided with coil protrusions (not shown) protruding toward the mating panel 30, i.e. the charging coil 20 has a larger coil amount in a local area (not limited to the outermost periphery), and the coil protrusions are in contact with the mating panel 30, so that a heat dissipation channel is also realized, which is not described herein.
In the embodiment of the present invention, the mating panel 30 includes a panel protrusion 31 protruding toward the charging coil 20, and the panel protrusion 31 contacts the charging coil 20, so that the panel protrusion 31 can enlarge the size of the heat dissipation channel 40 between the mating panel 30 and the charging coil 20 to improve the heat dissipation performance. In practical use, the panel protrusions 31 may be provided in a plurality and annularly arranged, and the plurality of panel protrusions 31 are in contact with the outer edge of the charging coil 20.
Of course, in other embodiments of the present invention, the panel protrusions 31 may be arranged in an array, and the panel protrusions 31 may contact with respective positions of the charging coil, where the charging coil may not be limited to a bowl shape, but may be flat, or even, for example, any other shape.
In the embodiment of the present invention, the magnetic conductive plate 10 includes a middle portion 11 for carrying the charging coil 20 and a peripheral portion 12 extending from the peripheral side of the middle portion 11 toward the mating panel 30, the peripheral portion 12 may be perpendicular to the middle portion 11, the peripheral portion 12 surrounds the charging coil 20, and the magnetic field of the charging coil 20 is substantially within the range of the peripheral portion 12, so that the magnetic field of the charging coil 20 is more converged, which is not described herein.
Of course, in other embodiments of the present invention, the magnetic conductive plate 10 may be configured only in a flat plate shape, that is, only includes the middle portion 11 in the above embodiment, which is not described herein.
Fig. 2 is a schematic structural diagram of a wireless charging device and a powered device according to another embodiment of the present invention. In this embodiment, the shapes and the positional relationships of the magnetic conductive plate 10, the coil 20 and the heat insulating layer 30 in the wireless charging device 100a can be referred to in the foregoing embodiments, and will not be described herein.
The difference is that in the present embodiment, the wireless charging device 100a further includes a heat insulation layer 50, and the heat insulation layer 50 is disposed on the charging coil 20 and contacts with the mating panel 30. By arranging the heat insulating layer 50 between the charging coil 20 and the mating panel 30, the heat insulating layer 50 can isolate the heat directly transmitted to the mating panel 30 by the charging coil 20, thereby greatly reducing the heat transmitted to the power receiving device 200 and avoiding the power receiving device 200 from influencing the charging due to overheating.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (6)
1. A wireless charging device, comprising:
a magnetic conductive plate;
the charging coil is arranged on the magnetic conduction plate;
the adapter panel is positioned above the charging coil and used for bearing powered equipment;
wherein the charging coil includes an upper surface facing the mating panel, the upper surface being concave such that the closer to a center of the upper surface, the farther the charging coil is from the mating panel;
the outer edge of the charging coil is provided with a plurality of gaps which are arranged at intervals, and the outer edge between the adjacent gaps is contacted with the matching panel, so that a heat dissipation channel is formed.
2. The wireless charging device of claim 1, wherein the charging coil includes a coil protrusion formed protruding toward the mating panel, the coil protrusion being in contact with the mating panel.
3. The wireless charging device according to claim 1 or 2, wherein the mating panel includes a panel protrusion formed protruding toward the charging coil, the panel protrusion being in contact with the charging coil.
4. The wireless charging device of claim 3, wherein the number of panel protrusions is a plurality and is arranged in a ring shape, and the plurality of panel protrusions are in contact with an outer edge of the charging coil.
5. The wireless charging device of claim 3, wherein the number of panel protrusions is a plurality and arranged in an array, the plurality of panel protrusions being in contact with the charging coil.
6. The wireless charging device according to claim 1 or 2, wherein the magnetic conductive plate includes a middle portion for carrying the charging coil and a peripheral portion extending from a peripheral side of the middle portion toward the mating panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399018.1A CN110417127B (en) | 2018-04-28 | 2018-04-28 | Wireless charging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399018.1A CN110417127B (en) | 2018-04-28 | 2018-04-28 | Wireless charging equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110417127A CN110417127A (en) | 2019-11-05 |
| CN110417127B true CN110417127B (en) | 2023-09-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810399018.1A Active CN110417127B (en) | 2018-04-28 | 2018-04-28 | Wireless charging equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110417127B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111641271B (en) * | 2020-06-11 | 2021-06-29 | 中国人民解放军陆军军医大学第一附属医院 | Medical wireless charging equipment |
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| CN203326678U (en) * | 2013-07-23 | 2013-12-04 | 深圳市亿捷能科技有限公司 | Furniture wireless charger |
| CN104701928A (en) * | 2013-12-10 | 2015-06-10 | Lg电子株式会社 | Wireless charging device |
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| CN203326678U (en) * | 2013-07-23 | 2013-12-04 | 深圳市亿捷能科技有限公司 | Furniture wireless charger |
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| KR101733579B1 (en) * | 2016-04-28 | 2017-05-08 | (주)우주일렉트로닉스 | Wireless charging apparatus having the outer peripheral surface heat sink to emit heat to the outside |
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| Publication number | Publication date |
|---|---|
| CN110417127A (en) | 2019-11-05 |
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