CN109274331A - A kind of PV-TE hybrid power plant thermally conductive based on graphene - Google Patents
A kind of PV-TE hybrid power plant thermally conductive based on graphene Download PDFInfo
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- CN109274331A CN109274331A CN201811274694.2A CN201811274694A CN109274331A CN 109274331 A CN109274331 A CN 109274331A CN 201811274694 A CN201811274694 A CN 201811274694A CN 109274331 A CN109274331 A CN 109274331A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 60
- 239000000758 substrate Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000005304 optical glass Substances 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- -1 graphite Alkene Chemical class 0.000 claims 2
- 230000005611 electricity Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 150000001336 alkenes Chemical class 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 241001424688 Enceliopsis Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000002135 nanosheet Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/052—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/052—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
- H01L31/0525—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells including means to utilise heat energy directly associated with the PV cell, e.g. integrated Seebeck elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/20—Optical components
- H02S40/22—Light-reflecting or light-concentrating means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
-
- 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
-
- 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
- Y02E10/60—Thermal-PV hybrids
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of PV-TE hybrid power plant thermally conductive based on graphene, device includes solar biaxial tracking cell, linear Fresnel light focusing unit, photovoltaic generation unit PV, graphene heat-conducting unit, thermo-electric generation unit TE and heat-sink unit, and graphene heat-conducting unit includes graphene heat-conducting unit one and graphene heat-conducting unit two；Linear Fresnel light focusing unit is set up in above photovoltaic generation unit PV, it is graphene heat-conducting unit one below photovoltaic generation unit PV, that be then close to graphene heat-conducting unit one is thermo-electric generation unit TE, it is graphene heat-conducting unit two below thermo-electric generation unit TE, heat-sink unit is close to graphene heat-conducting unit two in the following, above-mentioned each unit forms an integral erection on solar biaxial tracking cell；Photovoltaic generation unit PV connects battery with thermo-electric generation unit TE.The present invention is generated electricity using the heat that concentrator solar cell generates, and reduces the operating temperature of concentrator solar cell, extends battery life.
Description
Technical field
The present invention relates to a kind of PV-TE hybrid power plant thermally conductive based on graphene, belongs to solar power system skill
Art field.
Background technique
A large amount of uses of traditional fossil energy, cause to human living space and seriously threaten.Solar energy is as renewable
Clean energy resource contains huge energy, is generally considered ideal new energy.
It is utilized and solar thermal utilization two major classes currently, the utilization of solar energy is broadly divided into photovoltaic.Wherein, the light of silicon photocell plate
Raw Volta effect converts the solar into electric energy, but photoelectric conversion efficiency is hovered about 16% always, the original to be generated electricity according to it
Reason, temporarily also can not find the method increased substantially.The volume of photovoltaic temperature difference electricity generation device generally all very little, mainly due to half
The small volume of the temperature-difference power generation module of conductor material composition can come by adjusting the quantity and combination of thermoelectric generation film
Meet generated energy requirement.The disadvantage is that being influenced by pyroelectric material performance, conversion efficiency of thermoelectric is lower, in silicon photocell plate and the temperature difference
Heat Conduction Material is added between battery can reduce the temperature of silicon photocell plate, the generating efficiency of solar panel be improved, in addition, also improving
The temperature in thermoelectric cell hot end, and the generating efficiency of thermoelectric cell is improved, in this way, the photoelectric conversion of photovoltaic temperature difference electricity generation device
Efficiency gets a promotion.
Graphene, a kind of inorganic nano sheet layer material have extraordinary heat-conductive characteristic.Pure flawless single layer stone
The thermal coefficient of black alkene is up to 5300W/mK, is the highest carbon material of thermal coefficient so far.It is thermally conductive when it is as carrier
Coefficient is also presently found most thin, the strongest nano material of heating conduction up to 600W/mK.
To sum up, graphene Heat Conduction Material is applied in photovoltaic temperature difference electricity generation device by we, is developed a kind of based on graphite
The thermally conductive PV-TE hybrid power plant of alkene.
Summary of the invention
The present invention is proposed one kind and is led based on graphene to promote the photoelectric conversion efficiency of photovoltaic temperature difference electricity generation device
The PV-TE hybrid power plant of heat.
Technical scheme is as follows:
A kind of PV-TE hybrid power plant thermally conductive based on graphene, described device includes solar biaxial tracking cell, linear
Fresnel light focusing unit, photovoltaic generation unit PV, graphene heat-conducting unit, thermo-electric generation unit TE and heat-sink unit, the stone
Black alkene heat-conducting unit includes graphene heat-conducting unit one and graphene heat-conducting unit two；
The linear Fresnel light focusing unit is set up in above photovoltaic generation unit PV, is graphene below photovoltaic generation unit PV
Heat-conducting unit one, it is stone below thermo-electric generation unit TE that be then close to graphene heat-conducting unit one, which is thermo-electric generation unit TE,
Black alkene heat-conducting unit two, heat-sink unit is close to graphene heat-conducting unit two in the following, the linear Fresnel light focusing unit, photovoltaic hair
Electric unit PV, graphene heat-conducting unit, thermo-electric generation unit TE and heat-sink unit form an integral erection in solar biaxial
On tracking cell；The photovoltaic generation unit PV connects battery with thermo-electric generation unit TE.
Above-mentioned solar biaxial tracking cell includes rack, crossbeam and column, vertical direction retarder and horizontal direction
Retarder, on column, the rack is arranged on crossbeam the cross beam support, and the junction of column and crossbeam is vertical direction
Retarder, horizontal direction retarder are put on column.
Above-mentioned linear Fresnel light focusing unit main body is one layer of linear Fresnel lens, model 700*350mm, focal length
300mm 。
Above-mentioned photovoltaic generation unit PV main body is optical glass and three-joint solar cell, and three-joint solar cell structure is
Top layer GaInP2, middle layer GaAs, bottom Ge.
Above-mentioned graphene heat-conducting unit one and two main body of graphene heat-conducting unit are one layer of graphene substrate.
Above-mentioned thermo-electric generation unit TE main body is semi-conductor type thermoelectric cell.
Above-mentioned heat-sink unit main body is copper fin.
Advantageous effects of the invention:
1, the invention is generated electricity using the heat that concentrator solar cell generates, and reduces the operating temperature of concentrator solar cell, is extended
Battery life；
2, the invention increases thermo-electric generation unit TE(TE on original concentration photovoltaic system) so that concentrator solar cell produces
Raw heat is converted into power output again, improves the efficiency of solar energy utilization of entire condenser system；
3, traditional ceramic substrate is replaced using graphene substrate, gives full play to the high thermal conductivity of graphene, enhances optically focused
Heat transfer between solar cell and thermoelectric cell reduces concentrator solar cell temperature；Grapheme material connects thermoelectric cell
Cold end and radiator strengthen heat dissipation, maintain the lower temperature of cold end；
4, the invention does not need the cooling line of traditional concentration photovoltaic system, reduces the complexity of system.
Detailed description of the invention
Fig. 1 is the overall structure figure of hybrid power plant.
Fig. 2 is the schematic diagram of mixed power generation unit in the present invention.
Fig. 3 is the schematic diagram of solar biaxial tracking cell.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As described in Figure 1, a kind of PV-TE hybrid power plant thermally conductive based on graphene, described device include that solar energy is double
Axis tracking cell 1-1, linear Fresnel light focusing unit 1-2, photovoltaic generation unit PV1-3, graphene heat-conducting unit, thermo-electric generation
Unit TE1-5 and heat-sink unit 1-6, the graphene heat-conducting unit include that one 1-4-1 of graphene heat-conducting unit and graphene are led
Two 1-4-2 of hot cell；
The linear Fresnel light focusing unit 1-2 is set up in above photovoltaic generation unit PV1-3, under photovoltaic generation unit PV1-3
Face is one 1-4-1 of graphene heat-conducting unit, and be then close to graphene heat-conducting unit one is thermo-electric generation unit TE1-5, the temperature difference
It is two 1-4-2 of graphene heat-conducting unit below generator unit TE1-5, heat-sink unit 1-6 is close to two 1-4-2 of graphene heat-conducting unit
In the following, the linear Fresnel light focusing unit 1-2, photovoltaic generation unit PV1-3, graphene heat-conducting unit, thermo-electric generation unit
TE1-5 and heat-sink unit 1-6 forms an integral erection on solar biaxial tracking cell 1-1；The photovoltaic generation unit
PV1-3 connects battery with thermo-electric generation unit TE1-5.
As shown in figure 3, above-mentioned solar biaxial tracking cell 1-1 includes rack 1-1-1, crossbeam 1-1-2 and column 1-1-
3, vertical direction retarder 1-1-4 and horizontal direction retarder 1-1-5, the crossbeam 1-1-2 are supported on column 1-1-3,
The rack 1-1-1 is arranged on crossbeam 1-1-2, and the junction of column 1-1-3 and crossbeam 1-1-2 are vertical direction retarder 1-
1-4, horizontal direction retarder 1-1-5 are put on column 1-1-3.
Above-mentioned linear Fresnel light focusing unit 1-2 main body is one layer of linear Fresnel lens, and model 700*350mm is burnt
Away from 300mm.
As shown in Fig. 2, above-mentioned photovoltaic generation unit PV1-3 main body is optical glass and three-joint solar cell, three knots are too
Positive energy battery structure is top layer GaInP2, middle layer GaAs, bottom Ge.
Above-mentioned one 1-4-1 of graphene heat-conducting unit and one 1-4-2 main body of graphene heat-conducting unit are one layer of graphene substrate.
Above-mentioned thermo-electric generation unit TE1-5 main body is semi-conductor type thermoelectric cell.
Above-mentioned heat-sink unit 1-6 main body is copper fin.
In the apparatus structure, for device holistic conformation on solar biaxial tracking platform, which guarantees device always
Front vertical is in sunray.Sunray is gathered on multijunction solar cell plate by linear Fresnel lens, is realized high
Times optically focused, improves energy density, and multijunction solar cell carries out photovoltaic power generation.Graphene substrate below photovoltaic cell is by photovoltaic
The heat of panel backside is conducted to thermoelectric cell, improves the temperature in thermoelectric cell hot end, and thermoelectric cell is made to carry out thermo-electric generation.
Heat is conducted to radiator by the graphene substrate below thermoelectric cell, reduces the temperature of thermoelectric cell cold end, is guaranteed cold and hot
The temperature difference at end.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of PV-TE hybrid power plant thermally conductive based on graphene, it is characterised in that: described device includes solar biaxial
Tracking cell (1-1), linear Fresnel light focusing unit (1-2), photovoltaic generation unit PV(1-3), graphene heat-conducting unit, the temperature difference
Generator unit TE(1-5) and heat-sink unit (1-6), the graphene heat-conducting unit include graphene heat-conducting unit one (1-4-1)
With graphene heat-conducting unit two (1-4-2)；
The linear Fresnel light focusing unit (1-2) is set up in photovoltaic generation unit PV(1-3) top, photovoltaic generation unit PV
(1-3) is below graphene heat-conducting unit one (1-4-1), and that be then close to graphene heat-conducting unit one is thermo-electric generation unit TE
(1-5), thermo-electric generation unit TE(1-5) it is graphene heat-conducting unit two (1-4-2) below, heat-sink unit (1-6) is close to graphite
Alkene heat-conducting unit two (1-4-2) is in the following, the linear Fresnel light focusing unit (1-2), photovoltaic generation unit PV(1-3), graphite
Alkene heat-conducting unit, thermo-electric generation unit TE(1-5) and heat-sink unit (1-6) formed an integral erection in solar biaxial track
On unit (1-1)；The photovoltaic generation unit PV(1-3) and thermo-electric generation unit TE(1-5) connection battery.
2. a kind of PV-TE hybrid power plant thermally conductive based on graphene according to claim 1, it is characterised in that: institute
Stating solar biaxial tracking cell (1-1) includes that rack (1-1-1), crossbeam (1-1-2) and column (1-1-3), vertical direction subtract
Fast device (1-1-4) and horizontal direction retarder (1-1-5), the crossbeam (1-1-2) is supported on column (1-1-3), described
Rack (1-1-1) is arranged on crossbeam (1-1-2), and the junction of the column (1-1-3) and crossbeam (1-1-2) are vertical direction
Retarder (1-1-4), horizontal direction retarder (1-1-5) are put on column (1-1-3).
3. a kind of PV-TE hybrid power plant thermally conductive based on graphene according to claim 1, it is characterised in that: institute
Stating linear Fresnel light focusing unit (1-2) main body is one layer of linear Fresnel lens, model 700*350mm, focal length 300mm.
4. a kind of PV-TE hybrid power plant thermally conductive based on graphene according to claim 1, it is characterised in that: institute
State photovoltaic generation unit PV(1-3) main body be optical glass and three-joint solar cell, three-joint solar cell structure be top layer
GaInP2, middle layer GaAs, bottom Ge.
5. a kind of PV-TE hybrid power plant thermally conductive based on graphene according to claim 1, it is characterised in that: institute
It states graphene heat-conducting unit one (1-4-1) and (1-4-2) main body of graphene heat-conducting unit two is one layer of graphene substrate.
6. a kind of PV-TE hybrid power plant thermally conductive based on graphene according to claim 1, it is characterised in that: institute
State thermo-electric generation unit TE(1-5) main body be semi-conductor type thermoelectric cell.
7. a kind of PV-TE hybrid power plant thermally conductive based on graphene according to claim 1, it is characterised in that: institute
Stating heat-sink unit (1-6) main body is copper fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811274694.2A CN109274331A (en) | 2018-10-30 | 2018-10-30 | A kind of PV-TE hybrid power plant thermally conductive based on graphene |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811274694.2A CN109274331A (en) | 2018-10-30 | 2018-10-30 | A kind of PV-TE hybrid power plant thermally conductive based on graphene |
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| CN109274331A true CN109274331A (en) | 2019-01-25 |
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| CN201811274694.2A Pending CN109274331A (en) | 2018-10-30 | 2018-10-30 | A kind of PV-TE hybrid power plant thermally conductive based on graphene |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111578541A (en) * | 2019-02-16 | 2020-08-25 | 雷达 | Wind-light complementary type graphene heat collection device and preparation method thereof |
| CN112248657A (en) * | 2020-10-22 | 2021-01-22 | 湖南凯通电子有限公司 | Cooling device and cooling method for thermal printing head |
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|---|---|---|---|---|
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| CN112248657B (en) * | 2020-10-22 | 2021-07-02 | 湖南凯通电子有限公司 | Cooling device and cooling method for thermal printing head |
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