CN215872495U - Heat storage sheet and electronic device - Google Patents
Heat storage sheet and electronic device Download PDFInfo
- Publication number
- CN215872495U CN215872495U CN202122127868.6U CN202122127868U CN215872495U CN 215872495 U CN215872495 U CN 215872495U CN 202122127868 U CN202122127868 U CN 202122127868U CN 215872495 U CN215872495 U CN 215872495U
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- Prior art keywords
- phase change
- heat storage
- storage sheet
- change material
- material layer
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- 238000005338 heat storage Methods 0.000 title claims abstract description 63
- 239000012782 phase change material Substances 0.000 claims abstract description 58
- 239000003094 microcapsule Substances 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 54
- 239000012790 adhesive layer Substances 0.000 claims description 31
- 230000001681 protective effect Effects 0.000 claims description 27
- 229910002804 graphite Inorganic materials 0.000 claims description 22
- 239000010439 graphite Substances 0.000 claims description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011889 copper foil Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 229920002396 Polyurea Polymers 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 3
- 239000004645 polyester resin Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 238000004146 energy storage Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000000969 carrier Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- -1 graphite alkene Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Abstract
The utility model provides a heat storage sheet, which comprises a phase change material layer, wherein the phase change material layer is made of microcapsule particles, and the microcapsule particles are composed of a microcapsule shell and n-alkane wrapped by the microcapsule shell; the phase change temperature range of the phase change material layer is 28-45 ℃. The utility model also provides electronic equipment using the heat storage sheet. Compared with the related art, the heat storage sheet and the electronic equipment have the advantages of good heat dissipation effect, high charging effect and good safety.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the technical field of wireless charging, in particular to a heat storage sheet and electronic equipment.
[ background of the utility model ]
The wireless charging of electronic equipment is favored by people, such as mobile phones, and the wireless charging is quick and convenient. The wireless charging is mainly realized by a charging transmitting coil of a charging seat and a charging receiving coil in a mobile phone, the charging receiving coil generates heat to cause a rear cover to generate heat, an NTC thermistor on the wireless charging seat detects the temperature around a coil, and the NTC thermistor is made of different materials to set the circuit protection temperature.
The heat dissipation design that prior art's electronic equipment is wireless charges is for will charging receiving coil laminating on graphite alkene heat dissipation copper foil, connects the quick heat conduction metal sheet of center, perhaps with heat conduction to center, or lid heat dissipation behind the cell-phone, is about to the heat that wireless charging produced, need the cooling system of cell-phone self, goes out the heat conduction. Because the wireless charging receiving coil and the battery are basically arranged in a manner of being vertically and closely attached to each other in space, heat dissipated during charging is easily conducted to the battery end, so that the battery is overheated, and the charging efficiency is reduced.
Therefore, it is necessary to provide a new heat storage sheet and an electronic device to solve the above-mentioned technical problems.
[ Utility model ] content
The utility model aims to provide a heat storage sheet and an electronic device with good heat dissipation effect, high charging effect and good safety.
In order to achieve the purpose, the utility model provides a heat storage sheet, which comprises a phase change material layer, wherein the phase change material layer is made of microcapsule particles, and the microcapsule particles are composed of microcapsule shells and n-alkane wrapped by the microcapsule shells; the phase change temperature range of the phase change material layer is 28-45 ℃.
Preferably, the microcapsule shell is made of any one of polyurethane, polyurea resin and polyester resin; or any one of calcium carbonate and silicon dioxide; the enthalpy value range of the microcapsule particles is 170J/g-220J/g.
Preferably, the heat storage sheet further includes a first protection film attached to one side of the phase change material layer, and a first double-sided adhesive layer attached to a side of the phase change material layer away from the first protection film.
Preferably, the first protective film is made of copper foil or aluminum foil.
Preferably, the heat storage plate further comprises a first graphite sheet attached to one side, away from the phase change material layer, of the first double-sided adhesive layer and a second double-sided adhesive layer attached to one side, away from the first double-sided adhesive layer, of the first graphite sheet.
Preferably, the heat storage sheet further includes a second double-sided adhesive layer attached to a side of the first protective film away from the phase change material layer, a second graphite sheet attached to a side of the second double-sided adhesive layer away from the first protective film, and a second protective film attached to a side of the second graphite sheet away from the second double-sided adhesive layer.
Preferably, the heat storage sheet further comprises a third double-sided adhesive layer, a second graphite sheet and a second protective film, which are sequentially stacked and attached to one side of the phase change material layer away from the first protective film.
The utility model also provides electronic equipment which comprises a shell with an accommodating space, a wireless charging coil assembly attached in the shell, and a battery arranged in the accommodating space and electrically connected with the wireless charging coil assembly, and the electronic equipment also comprises the heat storage sheet provided by the utility model arranged in the accommodating space, wherein the heat storage sheet is attached to at least one of the shell, the battery and the wireless charging coil assembly.
Preferably, the heat storage sheet is attached to the surface of the wireless charging coil assembly and completely covers or partially covers the wireless charging coil assembly; the phase change temperature range of the phase change material layer of the heat storage sheet is 28-35 ℃.
Preferably, the heat storage sheet is attached to the surface of the battery and completely covers or partially covers the battery; the phase change temperature range of the phase change material layer of the heat storage sheet is 35-40 ℃.
Preferably, the electronic device further comprises a metal heat conducting plate arranged in the accommodating space and spaced from the battery, and the heat storage sheet is connected to the metal heat conducting plate.
Compared with the prior art, in the heat storage sheet and the electronic equipment, the heat storage sheets made of different phase-change temperature materials are selected at different positions according to heating conditions, so that the problem that the temperature of each position of the electronic equipment is too fast when the electronic equipment is wirelessly charged is solved, the shell temperature of the electronic equipment, the battery and other components can be kept at the optimal working temperature to a great extent in the wireless charging process or the working process, and the charging efficiency and the safety and reliability are effectively improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a heat storage sheet according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of a heat storage sheet according to the present invention;
FIG. 3 is a schematic structural diagram of a third embodiment of a heat storage sheet according to the present invention;
FIG. 4 is a schematic structural diagram of a fourth embodiment of a heat storage sheet according to the present invention;
FIG. 5 is a schematic structural diagram of a fifth embodiment of a heat storage sheet according to the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Fig. 1 is a schematic structural diagram of a heat storage sheet according to a first embodiment of the utility model. The utility model provides a heat storage sheet 100, which comprises a phase change material layer 101, wherein the phase change material layer 101 is made of microcapsule particles, and the microcapsule particles are microcapsule shells and n-alkane (C18-C22) wrapped by the microcapsule shells; the phase change temperature range of the phase change material layer 101 is 28-45 ℃. Or can be prepared by dispersing and coating aqueous adhesive and organic adhesive on various carriers.
A Phase Change Material (PCM-Phase Change Material) refers to a substance that changes the state of a substance at a constant temperature and can provide latent heat. The process of changing physical properties is called a phase change process, and in this case, the phase change material absorbs or releases a large amount of latent heat.
In the energy storage sheet of the utility model, the phase change temperature range of the phase change material layer 101 can be realized by selecting different phase change materials according to the realization condition, for example, when the phase change material is applied to electronic equipment such as a mobile phone, the working temperature of each device of the mobile phone is close to the experience temperature of human body holding, so the phase change temperature range is set to be 28-45 ℃.
Preferably, the phase change temperature range of the phase change material layer 101 is 28-35 ℃, and preferably, the phase change temperature range of the phase change material layer 101 is 35-40 ℃.
Specifically, in the present embodiment, the microcapsule shell is made of a polymer material, for example, any one of polyurethane, polyurea resin, and polyester resin; or inorganic materials such as calcium carbonate and silicon dioxide. More preferably, the enthalpy value range of the microcapsule particles is 170J/g-220J/g.
The phase change material layer 101 is coated on the protective film, and a double-sided tape is used as a bonding layer to be bonded to a use part. Or directly coated on the rapid thermal conductivity material. Such as copper foil, aluminum foil and heat conducting graphite flake, reduces the use of double-sided adhesive layer and reduces thermal resistance; it is also possible to use a composite of thermally conductive graphite sheets, either single-layer or multi-layer, which is also possible. Several specific examples are provided below for illustration:
as shown in fig. 1, in the present embodiment, the heat storage sheet 100 further includes a first protective film 102 attached to one side of the phase change material layer 101.
Preferably, the heat storage sheet 100 further includes a first double-sided adhesive layer 103 attached to a side of the phase change material layer 101 away from the first protective film 102.
Fig. 2 is a schematic structural diagram of a second heat storage sheet according to an embodiment of the utility model. The present embodiment has a structure substantially the same as that of the first embodiment, and includes a phase change material layer 201, a first protection film 202 attached to one side of the phase change material layer 201, and a first double-sided adhesive layer 203 attached to one side of the phase change material layer 201 away from the first protection film 202.
The difference is that: the first protective film 202 of the heat storage sheet 200 is made of copper foil or aluminum foil.
Fig. 3 is a schematic structural diagram of a heat storage sheet according to a third embodiment of the utility model. The present embodiment has a structure substantially the same as that of the first embodiment, and includes a phase change material layer 301, a first protective film 302 attached to one side of the phase change material layer 301, and a first double-sided adhesive layer 303 attached to a side of the phase change material layer 301 away from the first protective film 302.
The difference is that: the heat storage sheet 300 further comprises a first graphite sheet 304 attached to one side of the first double-sided adhesive layer 303 far away from the phase change material layer 301 and a second double-sided adhesive layer 305 attached to one side of the first graphite sheet 304 far away from the first double-sided adhesive layer 303.
Fig. 4 is a schematic structural diagram of a heat storage sheet according to a fourth embodiment of the utility model. The present embodiment has a structure substantially the same as that of the first embodiment, and includes a phase change material layer 401, a first protection film 402 attached to one side of the phase change material layer 401, and a first double-sided glue layer 403 attached to a side of the phase change material layer 401 away from the first protection film 402.
The difference is that: the heat storage plate 400 further includes a second double-sided adhesive layer 405 attached to a side of the first protective film 402 away from the phase change material layer 401, a second graphite sheet 406 attached to a side of the second double-sided adhesive layer 405 away from the first protective film 402, and a second protective film 407 attached to a side of the second graphite sheet 406 away from the second double-sided adhesive layer 405.
Fig. 5 is a schematic structural diagram of a fifth embodiment of a heat storage sheet according to the utility model. The structure of this embodiment is substantially the same as that of the third embodiment, and includes a phase change material layer 501, a first protective film 502 attached to one side of the phase change material layer 501, a first double-sided adhesive layer 503 attached to one side of the phase change material layer 501, which is far from the first protective film 502, a first graphite sheet 504 attached to one side of the first double-sided adhesive layer 503, which is far from the phase change material layer 501, and a second double-sided adhesive layer 505 attached to one side of the first graphite sheet 504, which is far from the first double-sided adhesive layer 503.
The difference is that: the heat storage sheet 500 further includes a third double-sided adhesive layer 508, a second graphite sheet 506 and a second protective film 507 laminated on one side of the first protective film 502 away from the phase change material layer 501 in sequence.
In the energy storage sheet, the phase change temperature range of the phase change material layer can be realized by selecting different phase change materials according to the realization condition, for example, when the energy storage sheet is applied to electronic equipment such as a mobile phone, the energy storage sheet can be added in a temperature concentrated heating area and a main holding area to adjust the temperature. The phase-change material layer can be prepared into sheets by mixing aqueous adhesive and organic adhesive according to actual requirements, dispersing and coating the mixture on various carriers, and the energy storage sheet is the energy storage sheet. The battery heating area can select the energy storage sheet made of photo material with the phase change temperature range of 28-35 ℃; the shell of the holding area can be made of photo materials with the variable temperature range of 35-40 ℃. The thickness and the area of the sheet material of the energy storage sheet can be adjusted by increasing or reducing the using amount of the sheet material according to the actual heat dissipation requirement, and the sheet material layer and the heat dissipation material can be directly compounded and prepared according to the scene requirement for use, for example, the sheet material layer is directly attached to the graphite sheet.
When the heat storage sheet is applied to electronic equipment, the heat storage sheets made of different phase change temperature materials are selected at different positions according to heating conditions, so that the problem that the temperature of each position of the electronic equipment is heated too fast during wireless charging is solved, the shell temperature of the electronic equipment, a battery and other components are kept at the optimal working temperature to a great extent during the wireless charging process or the working process, the temperature is prevented from rising to exceed the application range of the wireless charging, and the charging efficiency and the safety and reliability are effectively improved.
As shown in fig. 6, the present invention further provides an electronic device 600, which includes a housing 61 having an accommodating space, a wireless charging coil assembly 62 attached in the housing 61, and a battery 63 installed in the accommodating space and electrically connected to the wireless charging coil assembly 62, wherein the electronic device 600 further includes the heat storage sheet 64 provided in the accommodating space, and the heat storage sheet 64 is attached to at least one of the housing 62, the battery 63, and the wireless charging coil assembly 62.
For example, the heat storage sheet 64 is attached to the surface of the wireless charging coil assembly 63, and completely covers or partially covers the wireless charging coil assembly, and at this time, the phase change temperature range of the phase change material layer of the heat storage sheet 64 may be selected to be 28-35 ℃.
For another example, the heat storage sheet 64 is attached to the surface of the battery 63, and completely covers or partially covers the battery 63; the phase change temperature range of the phase change material layer of the heat storage sheet 64 is 35-40 ℃.
Preferably, the electronic device 100 further includes a metal heat conduction plate 65 disposed in the accommodating space and spaced from the battery 63, and the heat storage sheet 64 is connected to the metal heat conduction plate 65.
Specifically, the housing 61 includes a rear cover 611, a screen 612 covering the rear cover 611 and enclosing the receiving space, and a middle frame 613 located between the rear cover 611 and the screen 612, and both the battery 63 and the metal heat conducting plate 65 are mounted and fixed on the middle frame 613.
In this embodiment, the heat-retaining sheet can be laminated in wireless charging coil assembly surface, and cover completely or partially wireless charging coil assembly. Namely, the heat storage sheet can cover the surface of the wireless charging coil assembly, and can be cut according to actual use requirements, so that the whole rear cover can be fully paved to the maximum extent. The most of wireless charging coil subassembly also can be vacated, only laminate on the heat conduction graphite copper foil that partial electronic equipment itself set up.
Alternatively, the energy storage sheet can be attached to the surface of the battery and completely or partially cover the battery. Namely, the energy storage sheet can be attached to the surface of the battery and is connected with the part of the metal heat conducting plate above the battery, or the energy storage sheet covers the metal heat conducting plate and the surface of the battery completely.
Compared with the prior art, in the heat storage sheet and the electronic equipment, the heat storage sheets made of different phase-change temperature materials are selected at different positions according to heating conditions, so that the problem that the temperature of each position of the electronic equipment is too fast when the electronic equipment is wirelessly charged is solved, the shell temperature of the electronic equipment, the battery and other components can be kept at the optimal working temperature to a great extent in the wireless charging process or the working process, and the charging efficiency and the safety and reliability are effectively improved.
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 utility model.
Claims (11)
1. The heat storage sheet is characterized by comprising a phase change material layer, wherein the phase change material layer is made of microcapsule particles, and the microcapsule particles are composed of a microcapsule shell and n-alkane wrapped by the microcapsule shell; the phase change temperature range of the phase change material layer is 28-45 ℃.
2. The heat storage sheet of claim 1, wherein the microcapsule shell is made of any one of polyurethane, polyurea resin and polyester resin; or any one of calcium carbonate and silicon dioxide; the enthalpy value range of the microcapsule particles is 170J/g-220J/g.
3. The heat storage sheet of claim 1, further comprising a first protective film attached to one side of the phase change material layer and a first double-sided adhesive layer attached to a side of the phase change material layer away from the first protective film.
4. The heat storage sheet according to claim 3, wherein the first protective film is made of copper foil or aluminum foil.
5. The heat storage sheet of claim 3, further comprising a first graphite sheet attached to a side of the first double-sided adhesive layer away from the phase change material layer and a second double-sided adhesive layer attached to a side of the first graphite sheet away from the first double-sided adhesive layer.
6. The heat storage sheet of claim 3, further comprising a second double-sided adhesive layer attached to a side of the first protective film away from the phase change material layer, a second graphite sheet attached to a side of the second double-sided adhesive layer away from the first protective film, and a second protective film attached to a side of the second graphite sheet away from the second double-sided adhesive layer.
7. The heat storage sheet according to claim 5, further comprising a third double-sided adhesive layer, a second graphite sheet, and a second protective film laminated in this order on a side of the first protective film away from the phase change material layer.
8. An electronic device, comprising a housing having an accommodating space, a wireless charging coil assembly attached to the housing, and a battery installed in the accommodating space and electrically connected to the wireless charging coil assembly, wherein the electronic device further comprises the heat storage sheet of any one of claims 1 to 7 disposed in the accommodating space, and the heat storage sheet is attached to at least one of the housing, the battery, and the wireless charging coil assembly.
9. The electronic device of claim 8, wherein the heat sink is attached to a surface of the wireless charging coil assembly and completely covers or partially covers the wireless charging coil assembly; the phase change temperature range of the phase change material layer of the heat storage sheet is 28-35 ℃.
10. The electronic device of claim 8, wherein the heat-retaining sheet is attached to the surface of the battery and completely covers or partially covers the battery; the phase change temperature range of the phase change material layer of the heat storage sheet is 35-40 ℃.
11. The electronic device of claim 10, further comprising a metal heat-conducting plate disposed in the receiving space and spaced apart from the battery, wherein the heat storage sheet is connected to the metal heat-conducting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122127868.6U CN215872495U (en) | 2021-09-03 | 2021-09-03 | Heat storage sheet and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122127868.6U CN215872495U (en) | 2021-09-03 | 2021-09-03 | Heat storage sheet and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215872495U true CN215872495U (en) | 2022-02-18 |
Family
ID=80245673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122127868.6U Expired - Fee Related CN215872495U (en) | 2021-09-03 | 2021-09-03 | Heat storage sheet and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215872495U (en) |
-
2021
- 2021-09-03 CN CN202122127868.6U patent/CN215872495U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |