CN210110796U - Battery backboard - Google Patents
Battery backboard Download PDFInfo
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- CN210110796U CN210110796U CN201822163372.2U CN201822163372U CN210110796U CN 210110796 U CN210110796 U CN 210110796U CN 201822163372 U CN201822163372 U CN 201822163372U CN 210110796 U CN210110796 U CN 210110796U
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- 239000010410 layer Substances 0.000 claims abstract description 104
- 239000012790 adhesive layer Substances 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 230000004888 barrier function Effects 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 6
- 238000002310 reflectometry Methods 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 238000010248 power generation Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000000741 silica gel Substances 0.000 description 10
- 229910002027 silica gel Inorganic materials 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 8
- 239000002585 base Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000004026 adhesive bonding Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000009713 electroplating Methods 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 238000007639 printing Methods 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 229910001868 water Inorganic materials 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 229910000428 cobalt oxide Inorganic materials 0.000 description 2
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 2
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 108010025899 gelatin film Proteins 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 229940005657 pyrophosphoric acid Drugs 0.000 description 2
- 238000007761 roller coating Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010345 tape casting Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- 238000007738 vacuum evaporation Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- KTSFMFGEAAANTF-UHFFFAOYSA-N [Cu].[Se].[Se].[In] Chemical compound [Cu].[Se].[Se].[In] KTSFMFGEAAANTF-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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- Photovoltaic Devices (AREA)
Abstract
The utility model belongs to the technical field of solar energy, a battery backboard is provided. The battery back sheet includes: the substrate layer is provided with a first surface and a second surface which are oppositely arranged; a reflecting layer is prepared on the first surface of the substrate layer, and the substrate layer is a blocking layer; a first adhesive layer and a first insulating layer are sequentially prepared on the surface, far away from the base material layer, of the reflecting layer; and a second adhesive layer, a second insulating layer and a wear-resistant layer are sequentially prepared on the second surface of the base material layer. The beneficial effects of the utility model reside in that: the battery backboard not only has the mechanical property of the traditional solar backboard, but also has the double effects of high wear resistance and high light reflection, thereby effectively improving the power generation efficiency of the battery and prolonging the service life of the battery.
Description
Technical Field
The utility model belongs to the technical field of solar energy, concretely relates to battery backboard.
Background
With the wide application and popularization of the solar cell power generation technology with the advantages of environmental protection and energy conservation, the huge market demand of the back plate film for the solar cell is driven. The solar cell back plate is positioned on the back surface of the solar cell module, plays a role in protecting and supporting the cell chip, and is one of the extremely important packaging materials for prolonging the service life of the cell.
The solar cell back plate is an extremely important packaging material in a photovoltaic module, plays a role in supporting and protecting a cell chip, is directly contacted with the external environment in a large area, bears an important mission for ensuring stable power generation of the photovoltaic module, and has the advantages of excellent aging resistance (damp heat, dry heat and ultraviolet), corrosion resistance, electric insulation resistance, water vapor barrier, size stability and the like.
Most of vertical incident light or small-angle incident light can be reflected to the air again by the back plate of the solar cell, cannot be well absorbed and utilized by the cell, is not beneficial to the absorption of the photovoltaic module to light, and often has the problem of low light reflection rate, thereby influencing the power generation efficiency of the cell.
In addition, in order to ensure the wear resistance of the solar cell back plate, the wear-resistant layer is often coated on the material plate, and the mode cannot ensure that the wear-resistant paint is fully attached to the surface of the back plate, so that the service life of the photovoltaic back plate is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery backboard to solve the technical problem who exists among the prior art.
The utility model discloses the technical means who adopts is: a battery backsheet, comprising: the substrate layer is provided with a first surface and a second surface which are oppositely arranged; the first surface of substrate layer is prepared with the reflection stratum, the substrate layer is the barrier layer.
Preferably, the barrier layer is one of aluminum, copper and gold foil.
Preferably, the barrier layer has a thickness of 9-50 um.
Preferably, the thickness of the reflecting layer is 1-30um, and the reflectivity is more than 98%.
Preferably, a first adhesive layer and a first insulating layer are sequentially prepared on the surface of the reflecting layer far away from the base material layer; and a second adhesive layer, a second insulating layer and a wear-resistant layer are sequentially prepared on the second surface of the base material layer.
Preferably, the first insulating layer and the second insulating layer are one of polyethylene, polyethylene terephthalate and polyamide.
Preferably, the thickness of the first and second insulating layers is 50-200 um.
Preferably, the wear resistant layer has a thickness of 10-50 um.
Preferably, the first adhesive layer and the second adhesive layer are light-transmitting silica gel layers.
The utility model also provides a solar cell, including the foretell battery backplate of solar cell chip, the battery backplate is fixed in the back of solar cell chip.
Compared with the prior art, the utility model discloses the beneficial effect who produces is:
(1) the battery backboard of the utility model effectively improves the power generation efficiency of the battery by arranging the reflecting layer and the blocking layer, the water vapor transmission rate can reach 10-6g/m2.D, water vapor can be blocked well, and the service life of the battery is prolonged; directly set up the substrate layer into the barrier layer, reduced the gross thickness of battery backplate, make the battery backplate lighter and thinner.
(2) The utility model discloses a battery backboard makes it not only have the mechanical properties of traditional solar energy backplate through setting up the wearing layer, still has high wear-resisting effect simultaneously.
(3) The utility model discloses a battery backplate realizes good radiating effect through setting up a plurality of high printing opacity silica gel layers, improves battery backplate's heat resistance.
(4) The utility model discloses battery backboard makes battery backboard effectively be applicable to high-voltage system through setting up a plurality of insulating layers.
Drawings
Fig. 1 is a schematic view of a material composition structure of a battery back plate in embodiment 1 of the present invention.
Wherein: 1. the first insulating layer, 2, first gluing layer, 3, reflection stratum, 4, substrate layer, 5, second gluing layer, 6, second insulating layer, 7, wearing layer.
Detailed Description
The technical solution of the present invention will be described in detail and fully with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Example 1
The battery back sheet in this example was prepared as follows
(1) Cleaning and drying the upper surface and the lower surface of the base material layer 4, forming a silvery reflecting layer 3 on the surface of the base material layer by vacuum evaporation through a vacuum coating machine, and adjusting the thickness of the reflecting layer 3 by controlling the OD value of the optical density unit;
(2) mixing and stirring liquid silica gel, curing agent, anti-aging agent and other main agents uniformly, preparing a high-light-transmittance silica gel film wet film on the upper surface and the lower surface of the composite film prepared in the step (1) by adopting spraying, knife coating, roller coating and other modes, and drying to obtain a first adhesive layer 2 and a second adhesive layer 5;
(3) cleaning the second insulating layer 6 by an ultrasonic method and ethanol to remove grease on the film surface, then cleaning again by a sodium hydroxide solution, washing surface alkali liquor by clear water, thoroughly cleaning by deionized water, and drying for later use;
(4) uniformly stirring and mixing cobalt oxide, cobaltous sulfate pyrophosphoric acid, nickel chloride, potassium chloride, sodium chloride, phosphoric acid, water and the like to prepare a wear-resistant electroplating solution, and placing the second insulating layer 6 prepared in the step (3) in the electroplating solution for electrifying and electroplating to obtain a wear-resistant layer 7;
(5) and (3) sequentially laminating the first insulating layer 1, the composite film prepared in the step (2) (the second adhesive layer 2 is upward) and the composite film prepared in the step (4) (the wear-resistant layer 7 is downward) from top to bottom, and heating and rolling to prepare the battery back plate, wherein the rolling and laminating temperature is 120 ℃ and the time is 5 min.
As shown in fig. 1, the battery back plate prepared in this embodiment sequentially includes, from top to bottom, a first insulating layer 1, a first adhesive layer 2, a reflective layer 3, a substrate layer 4, a second adhesive layer 5, a second insulating layer 6, and a wear-resistant layer 7.
Wherein, first insulating layer 1 and second insulating layer 6 are one of PE (polyethylene), PET (polyethylene terephthalate), PA (polyamide, commonly known as nylon), and thickness is 50-200um, preferably PE, and thickness is 200um, makes battery backplate effectively be applicable to high-pressure system. The reflecting layer 3 is an aluminized film, the thickness of the aluminized film is 1-30um, preferably 30um, the aluminized layer has a mirror reflection effect on sunlight, so that the reflectivity is improved to be more than 98%, and meanwhile, the aluminized film is mature in production process, low in cost and high in reflectivity on sunlight and has a good cost performance advantage; the substrate layer 4 is one of aluminium, copper and gold foil, and thickness is 9-50um, preferentially is aluminium, and thickness is 50um, and the steam transmissivity can reach 10-6g/m2.D, can separate steam well, prolongs the life of battery. The thickness of the wear-resistant layer 7 is 10-50um, preferably 50um, so that the battery back plate has high wear resistance and aging resistance, and the service life of the battery is effectively prolonged. First gluing layer 2 and second gluing layer 6 are high printing opacity silica gel layer, and high printing opacity silica gel layer thickness is 10-50um, and preferably 50um can realize good radiating effect.
It is worth mentioning that the battery back plate prepared by the preparation method in the embodiment not only meets the mechanical properties, heat resistance and aging resistance of the traditional back plate, but also has the double effects of high wear resistance and high light reflection.
Example 2
The battery back sheet in this example was prepared as follows
(1) Cleaning and drying the upper surface and the lower surface of the base material layer 4, forming a silvery reflecting layer 3 on the surface of the base material layer by vacuum evaporation through a vacuum coating machine, and adjusting the thickness of the reflecting layer 3 by controlling the OD value of the optical density unit;
(2) mixing and stirring liquid silica gel, curing agent, anti-aging agent and other main agents uniformly, preparing a high-light-transmittance silica gel film wet film on the upper surface and the lower surface of the composite film prepared in the step (1) by adopting spraying, knife coating, roller coating and other modes, and drying to obtain a first adhesive layer 2 and a second adhesive layer 5;
(3) cleaning the second insulating layer 6 by an ultrasonic method and ethanol to remove grease on the film surface, then cleaning again by a sodium hydroxide solution, washing surface alkali liquor by clear water, thoroughly cleaning by deionized water, and drying for later use;
(4) uniformly stirring and mixing cobalt oxide, cobaltous sulfate pyrophosphoric acid, nickel chloride, potassium chloride, sodium chloride, phosphoric acid, water and the like to prepare a wear-resistant electroplating solution, and placing the second insulating layer 6 prepared in the step (3) in the electroplating solution for electrifying and electroplating to obtain a wear-resistant layer 7;
(5) and (3) sequentially laminating the first insulating layer 1, the composite film prepared in the step (2) (the second adhesive layer 2 is upward) and the composite film prepared in the step (4) (the wear-resistant layer 7 is downward) from top to bottom, and heating and rolling to prepare the battery back plate, wherein the rolling and laminating temperature is 50 ℃ and the time is 1 min.
Wherein, first insulating layer 1 and second insulating layer 6 are PET, and thickness is 50um, make battery backplate effectively be applicable to high-voltage system. The reflecting layer 3 is an aluminized film with the thickness of 1um, and the aluminized layer has a mirror reflection effect on sunlight, so that the reflectivity is improved to be more than 98%, and meanwhile, the aluminized film is mature in production process, low in cost and high in reflectivity on sunlight and has a good cost performance advantage; the base material layer 4 is copper, and thickness is 9um, and the steam transmissivity can reach 10-6g/m2.D, can separate steam well, prolongs the life of battery. The thickness of the wear-resistant layer 7 is 10um, so that the battery back plate has high wear resistance and aging resistance, and the service life of the battery is effectively prolonged. First gluing layer 2 and second gluing layer 6 are high printing opacity silica gel layer, and high printing opacity silica gel layer thickness is 50um, can realize good radiating effect.
Example 3
A solar cell using the cell back sheets prepared in examples 1 and 2, the back surfaces of the cell back sheets being fixed to solar cell chips. It is worth mentioning that the solar cell can be a copper indium gallium selenide solar thin film chip cell, a silicon-based thin film chip cell, a cadmium telluride thin film chip cell, a gallium arsenide thin film chip cell, a dye-sensitized solar thin film chip cell or an organic flexible solar thin film chip cell.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A battery backsheet, comprising:
the substrate layer is provided with a first surface and a second surface which are oppositely arranged;
a reflecting layer is prepared on the first surface of the substrate layer, and the substrate layer is a blocking layer;
and a second adhesive layer, a second insulating layer and a wear-resistant layer are sequentially prepared on the second surface of the base material layer.
2. The battery backsheet according to claim 1, wherein the barrier layer is one of aluminum, copper and gold foil.
3. The battery backsheet according to claim 2, wherein the barrier layer has a thickness of 9-50 um.
4. The battery back sheet of claim 1, wherein the reflective layer has a thickness of 1-30um and a reflectivity of 98% or more.
5. The battery back sheet according to claim 1, wherein the surface of the reflective layer away from the substrate layer is sequentially provided with a first adhesive layer and a first insulating layer.
6. The battery back sheet of claim 5, wherein the first and second insulating layers are one of polyethylene, polyethylene terephthalate, and polyamide.
7. The battery back sheet of claim 6, wherein the first and second insulating layers have a thickness of 50-200 um.
8. The battery back sheet of claim 5, wherein the wear layer has a thickness of 10-50 um.
9. The battery back plate of claim 5, wherein the first and second adhesive layers are light-transmissive silicone layers.
10. A solar cell comprising a solar cell chip and the cell back sheet according to any one of claims 1 to 9, wherein the cell back sheet is fixed to the back surface of the solar cell chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822163372.2U CN210110796U (en) | 2018-12-24 | 2018-12-24 | Battery backboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822163372.2U CN210110796U (en) | 2018-12-24 | 2018-12-24 | Battery backboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210110796U true CN210110796U (en) | 2020-02-21 |
Family
ID=69530894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822163372.2U Active CN210110796U (en) | 2018-12-24 | 2018-12-24 | Battery backboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210110796U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563360A (en) * | 2020-12-01 | 2021-03-26 | 西安隆基绿能建筑科技有限公司 | Backboard for photovoltaic module, preparation method of backboard and photovoltaic module |
-
2018
- 2018-12-24 CN CN201822163372.2U patent/CN210110796U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563360A (en) * | 2020-12-01 | 2021-03-26 | 西安隆基绿能建筑科技有限公司 | Backboard for photovoltaic module, preparation method of backboard and photovoltaic module |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201203 Address after: No. 101400 Yanqi Economic Development Zone, Huairou Patentee after: Beijing Huihong Technology Co., Ltd Address before: Room 107, Building 2, Olympic Village Street Comprehensive Office District, Chaoyang District, Beijing Patentee before: HANERGY MOBILE ENERGY HOLDING GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211013 Address after: 101400 Yanqi Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: Dongjun new energy Co.,Ltd. Address before: 101400 No.31 Yanqi street, Yanqi Economic Development Zone, Huairou District, Beijing (cluster registration) Patentee before: Beijing Huihong Technology Co., Ltd |
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| TR01 | Transfer of patent right |