CN216720973U - Wireless charging device and electronic equipment - Google Patents
Wireless charging device and electronic equipment Download PDFInfo
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- CN216720973U CN216720973U CN202123407133.5U CN202123407133U CN216720973U CN 216720973 U CN216720973 U CN 216720973U CN 202123407133 U CN202123407133 U CN 202123407133U CN 216720973 U CN216720973 U CN 216720973U
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- wireless charging
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- protective film
- soft magnet
- charging device
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Abstract
The utility model belongs to the technical field of wireless charging, and discloses a wireless charging device and electronic equipment, which comprise a soft magnet, a coil, a first protective film and a second protective film, wherein the coil is arranged on one side of the soft magnet and comprises a metal material; the first protection film is arranged on one side, away from the coil, of the soft magnet, a first glue layer is arranged on one side of the first protection film, and the first protection film is bonded on the soft magnet through the first glue layer; the second protection film is arranged on one side of the coil, which is far away from the soft magnet, the peripheral edge of the first protection film and the peripheral edge of the second protection film are respectively provided with a first extension part and a second extension part, and the first extension part is connected to the second extension part so as to coat the coil and the soft magnet. According to the wireless charging device and the electronic equipment, the first protective film is used for single-side edge covering, the using effect can be achieved, the reliability is achieved, the structure is more compact, the size is small and thin, and the using requirement is met.
Description
Technical Field
The present invention relates to the field of wireless charging technologies, and in particular, to a wireless charging device and an electronic apparatus.
Background
The wireless charging device comprises components such as soft magnetic materials, double-sided adhesive tapes and coils, and because the soft magnetic materials are fragile, soft magnetic burrs and small particles fall off in the using process, and other devices of the whole machine can be damaged. In order to solve the problems, the conventional market mode is to perform double-sided edge covering on soft magnets so as to protect the soft magnet structure and prevent falling objects from entering the whole machine; however, the double-sided edge-covering structure causes the thickness of the wireless charging device, and the requirement of small and thin device size in the market is difficult to meet.
Therefore, a wireless charging device and an electronic apparatus are needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a wireless charging device and electronic equipment, which have more compact structures, enable the size of the device to be small and thin and meet the use requirements.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a wireless charging device, comprising:
a soft magnetic body;
the coil is arranged on one side of the soft magnet and comprises a metal material;
the first protective film is arranged on one side, away from the coil, of the soft magnet, a first glue layer is arranged on one side of the first protective film, and the first protective film is bonded on the soft magnet through the first glue layer;
and the second protective film is arranged on one side of the coil, which is far away from the soft magnet, the peripheral edge of the first protective film and the peripheral edge of the second protective film are respectively provided with a first extension part and a second extension part, and the first extension part is connected to the second extension part so as to coat the coil and the soft magnet.
Optionally, the first protective film is a hard plastic film, and the thickness of the first protective film is 5um-50 um.
Optionally, a second glue layer is arranged on the other side of the first protection film, and the second glue layer is used for bonding with an external device; or
And a first glue layer is arranged on only one side of the two sides of the first protective film, and the other side of the first protective film is detachably connected with an external device.
Optionally, the second protective film is a plastic film, a third adhesive layer is disposed on one side of the second protective film, the second protective film is bonded to the coil through the third adhesive layer, and the first extending portion and the second extending portion are bonded through the first adhesive layer and/or the third adhesive layer; and/or
And a fourth adhesive layer is arranged on the other side of the second protective film and is used for bonding with an external device.
Optionally, the cross-sectional area of the soft magnet is larger than that of the coil, the coil is arranged in the middle of the soft magnet, and the outer edge of the soft magnet is bonded to the second protective film through the third adhesive layer.
Optionally, the material of the soft magnet is an amorphous material, a ferrite material or a nanocrystalline material, and the thickness of the soft magnet is 10um-200 um.
Optionally, the coil is a flexible circuit board or a wound enameled wire.
In another aspect, an electronic device is provided, which includes a housing, a battery disposed in the housing, and the wireless charging device described above, wherein the wireless charging device is disposed between the housing and the battery.
Optionally, a bracket is disposed between the housing and the battery, and the wireless charging device is fixed to the bracket.
Optionally, a heat sink, a shield, or a reinforcement is further disposed on a side of the wireless charging device.
The utility model has the beneficial effects that:
according to the wireless charging device and the electronic equipment, the first extension part and the second extension part are connected, so that the coil and the soft magnet are arranged between the first protective film and the second protective film to form an accommodating space, the soft magnet is clamped between the first protective film and the coil, one side of the soft magnet provides support for the soft magnet through the coil, and the other side of the soft magnet is bonded to the first protective film through the first glue layer, so that the soft magnet is stably installed and prevented from being broken; and the soft magnet is arranged in the accommodating space, so that even if small particles fall off, the soft magnet can also be prevented from falling into the whole machine to cause damage to other devices. In the structure, the edge of the soft magnet is only covered by the first protective film on one side, so that the production cost is reduced; the simplified structure can prevent burrs and small particles from falling off to damage other devices of the whole machine in the using process, and the reliability is high. And the single-side edge covering structure reduces the thickness of the wireless charging device, thereby realizing the thinning design of the wireless charging device and meeting the use requirements.
Drawings
Fig. 1 is a cross-sectional view of a wireless charging device provided by an embodiment of the present invention;
fig. 2 is a cross-sectional view of a wireless charging device applied to a mobile phone according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a wireless charging device applied to a tablet computer according to an embodiment of the present invention.
In the figure:
100. a mobile phone shell; 200. a mobile phone battery; 300. a tablet computer housing; 400. a tablet computer battery; 500. a wireless charging device;
1. a first protective film; 11. a first extension portion; 2. a soft magnetic body; 3. a coil; 4. a second protective film; 41. a second extension portion.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The present embodiment provides a wireless charging device, as shown in fig. 1, including a soft magnet 2, a coil 3, a first protective film 1, and a second protective film 4; specifically, the coil 3 is arranged on one side of the soft magnet 2, and the coil 3 is made of metal materials; the first protection film 1 is arranged on one side, away from the coil 3, of the soft magnet 2, a first glue layer is arranged on one side of the first protection film 1, and the first protection film 1 is bonded on the soft magnet 2 through the first glue layer; the second protection film 4 is disposed on a side of the coil 3 away from the soft magnet 2, the peripheral edge of the first protection film 1 and the peripheral edge of the second protection film 4 are respectively provided with a first extension portion 11 and a second extension portion 41, and the first extension portion 11 is connected to the second extension portion 41 to cover the coil 3 and the soft magnet 2.
The coil 3 and the soft magnet 2 are arranged in an accommodating space formed between the first protective film 1 and the second protective film 4 by connecting the first extension part 11 and the second extension part 41, the soft magnet 2 is clamped between the first protective film 1 and the coil 3, one side of the soft magnet 2 provides support for the soft magnet 2 through the coil 3, and the other side of the soft magnet 2 is bonded to the first protective film 1 through a first glue layer, so that the soft magnet 2 is stably installed and prevented from being broken; and the soft magnet 2 is arranged in the accommodating space, so that even if small particles fall off, the soft magnet can be prevented from falling into the whole machine to cause damage to other devices.
In the structure, only one side of the soft magnet 2 is covered by the first protective film 1, namely the conventional double-sided covering process in the background technology is simplified into a single-sided covering process, so that the production cost is reduced; the simplified structure can prevent burrs and small particles from falling off to damage other devices of the whole machine in the using process, and the reliability is high. And the single-side edge covering structure reduces the thickness of the wireless charging device 500, thereby realizing the thinning design of the wireless charging device 500 and meeting the use requirements. Specifically, referring to fig. 1, where a is the external dimension of the first protection film 1, b is the external dimension of the soft magnet 2, c is the external dimension of the coil 3, and d is the external dimension of the second protection film 4, specifically, a > b and d > b, so as to form a first extension portion 11 and a second extension portion 41, which are connected to each other, so that the first protection film 1 and the second protection film 4 form an accommodating space for accommodating the soft magnet 2 and the coil 3, thereby completely covering the soft magnet 2 and preventing fine burrs at the edge of the soft magnet 2 from falling off to damage the complete machine.
Optionally, the first protective film 1 is a hard plastic film, which can provide a supporting force for the soft magnet 2 and protect the soft magnet 2 from being broken by an external force, thereby improving reliability; alternatively, the material of the first protection film 1 may be a PET (Polyethylene terephthalate) material or a PI (Polyimide) material. Optionally, the thickness of the first protection film 1 is 5um-50um, so that the protection effect caused by too small thickness is avoided, and the phenomenon that the whole thickness is too large caused by too large thickness is also avoided.
In this embodiment, the other side of the first protection film 1 is provided with a second adhesive layer, and the second adhesive layer is used for bonding with an external device, that is, the first protection film 1 has a double-sided adhesive structure, so that the installation is convenient and reliable; in other embodiments, the first protection film 1 is provided with a first glue layer on only one side and is not provided with a second glue layer on the other side, that is, the first protection film 1 is a structure with a single glue layer, and the other side is used for being detachably connected with an external device, and the specific manner is not limited.
In this embodiment, the second protection film 4 is a plastic film, and the thickness of the whole wireless charging device 500 is reduced by reducing the thickness of the second protection film 4. In this embodiment, one side of the second protection film 4 is provided with a third glue layer, and the second protection film 4 is bonded to the coil 3 through the third glue layer, so that the connection reliability is improved. Further, when the first adhesive layer extends to the first extension portion 11, the first extension portion 11 and the second extension portion 41 are bonded through the first adhesive layer, when the second adhesive layer extends to the second extension portion 41, the first extension portion 11 and the second extension portion 41 are bonded through the second adhesive layer, and when the first adhesive layer and the second adhesive layer extend simultaneously, the first extension portion 11 and the second extension portion 41 are bonded through the first adhesive layer and the second adhesive layer simultaneously. Alternatively, the second protection film 4 may be a single-sided adhesive structure or a double-sided adhesive structure, and when the structure is a double-sided adhesive structure, that is, the other side of the second protection film 4 is provided with a fourth adhesive layer, and the fourth adhesive layer is used for bonding with an external device.
Preferably, the double-sided adhesive second protective film 4 may employ PSA (pressure sensitive adhesive) having a thickness of 0.01mm to 0.2mm, such as 3M6653, NITTO 5603, TESA8851, or the like. Preferably, the second protective film 4 with glue on one side can be mylar with glue on one side, such as Tesa7930, or other plastic film materials with glue on one side, which are all in the prior art and are not described again.
Further, the cross-sectional area of the soft magnet 2 is larger than that of the coil 3, the coil 3 is arranged in the middle of the soft magnet 2, and the outer edge of the soft magnet 2 is bonded to the second protective film 4 through a third adhesive layer, as shown in fig. 1, that is, b is larger than c, so that the outer edge of the soft magnet 2 protrudes out of the coil 3, the second protective film 4 can be bonded to the outer edges of the coil 3 and the soft magnet 2 through the third adhesive layer at the same time, and the connection reliability of the soft magnet 2 and the second protective film 4 is improved.
Optionally, the material of the soft magnet 2 is an amorphous material, a ferrite material or a nanocrystalline material, which may be selected according to production conditions; optionally, the thickness of the soft-magnetic body 2 is 10um to 200um, so as to meet the design requirement that the thickness of the whole product is thinner, and in special cases, the thickness of the soft-magnetic body 2 can be further increased in order to further improve the performance of the product.
Specifically, coil 3 contains the metal material, and optionally, coil 3 is flexible line way board or enameled wire winding, is prior art, and direct application can, no longer give unnecessary details.
The embodiment provides an electronic device, which comprises a housing, a battery arranged in the housing, and the wireless charging device 500, wherein the wireless charging device 500 is arranged between the housing and the battery. Through adopting the above-mentioned wireless charging device 500 of attenuate, can make electronic equipment wholly obtain the attenuate, and saved the inner space that occupies electronic equipment, convenient overall arrangement.
Specifically, as shown in fig. 2, the electronic device may be a mobile phone, and the wireless charging device 500 is disposed between the mobile phone case 100 and the mobile phone battery 200. Specifically, referring to fig. 3, the electronic device may also be a tablet computer, and the wireless charging device 500 is disposed between the tablet computer housing 300 and the tablet computer battery 400; specifically, the electronic device may also be a computer or the like, which is not limited, and the specific structure of the electronic device is similar to that of a mobile phone, which is not described in detail.
Specifically, a bracket is disposed between the housing and the battery, and the wireless charging device 500 is fixed to the bracket and fixed by the bracket.
Optionally, other laminated components, such as a heat sink, may be added to the side of the wireless charging device 500, and the side of the wireless charging device 500 is provided with a graphite component having heat dissipation performance; such as a reinforcing member, a plastic or metal reinforcing member having a certain rigidity is provided on a side surface of the wireless charging device 500; the number of components to be stacked and the material thereof are not limited.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A wireless charging device, comprising:
a soft-magnetic body (2);
the coil (3) is arranged on one side of the soft magnet (2), and the coil (3) contains a metal material;
the first protection film (1) is arranged on one side, away from the coil (3), of the soft magnet (2), a first glue layer is arranged on one side of the first protection film (1), and the first protection film (1) is bonded on the soft magnet (2) through the first glue layer;
the second protection film (4) is arranged on one side, away from the soft magnet (2), of the coil (3), the peripheral edge of the first protection film (1) and the peripheral edge of the second protection film (4) are provided with a first extension portion (11) and a second extension portion (41) respectively, and the first extension portion (11) is connected to the second extension portion (41) to cover the coil (3) and the soft magnet (2).
2. The wireless charging device according to claim 1, wherein the first protective film (1) is a hard plastic film, and the thickness of the first protective film (1) is 5-50 um.
3. The wireless charging apparatus of claim 1,
a second adhesive layer is arranged on the other side of the first protective film (1) and is used for being bonded with an external device; or
And two sides of the first protective film (1) are provided with a first adhesive layer only on one side, and the other side is detachably connected with an external device.
4. The wireless charging device according to claim 1, wherein the second protective film (4) is a plastic film, a third glue layer is arranged on one side of the second protective film (4), the second protective film (4) is bonded to the coil (3) through the third glue layer, and the first extending portion (11) and the second extending portion (41) are bonded through the first glue layer and/or the third glue layer; and/or
And a fourth adhesive layer is arranged on the other side of the second protective film (4) and is used for being bonded with an external device.
5. A wireless charging device according to claim 4, wherein the cross-sectional area of the soft-magnetic body (2) is larger than the cross-sectional area of the coil (3), the coil (3) is arranged in the middle of the soft-magnetic body (2), and the outer edge of the soft-magnetic body (2) is adhered to the second protective film (4) by the third glue layer.
6. A wireless charging arrangement according to any of the claims 1-5, characterized in that the material of the soft-magnetic body (2) is an amorphous material, a ferrite material or a nanocrystalline material, and that the thickness of the soft-magnetic body (2) is 10-200 um.
7. A wireless charging device according to any of claims 1-5, characterized in that the coil (3) is a flexible circuit board or a wound wire.
8. An electronic device comprising a housing, a battery disposed within the housing, and the wireless charging apparatus of any of claims 1-7 disposed between the housing and the battery.
9. The electronic device of claim 8, wherein a bracket is disposed between the housing and the battery, and the wireless charging device is fixed to the bracket.
10. The electronic device of claim 8, wherein the side of the wireless charging device is further provided with a heat sink, a shield, or a stiffener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123407133.5U CN216720973U (en) | 2021-12-30 | 2021-12-30 | Wireless charging device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123407133.5U CN216720973U (en) | 2021-12-30 | 2021-12-30 | Wireless charging device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216720973U true CN216720973U (en) | 2022-06-10 |
Family
ID=81889755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123407133.5U Active CN216720973U (en) | 2021-12-30 | 2021-12-30 | Wireless charging device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216720973U (en) |
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2021
- 2021-12-30 CN CN202123407133.5U patent/CN216720973U/en active Active
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