CN112739162A - High-efficient photovoltaic fills electric pile - Google Patents

High-efficient photovoltaic fills electric pile Download PDF

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Publication number
CN112739162A
CN112739162A CN202011533726.3A CN202011533726A CN112739162A CN 112739162 A CN112739162 A CN 112739162A CN 202011533726 A CN202011533726 A CN 202011533726A CN 112739162 A CN112739162 A CN 112739162A
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China
Prior art keywords
shell
box
pipe
cooling water
cooling
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Granted
Application number
CN202011533726.3A
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Chinese (zh)
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CN112739162B (en
Inventor
沈金虎
李先锐
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Jiangsu Mingmao New Energy Technology Co ltd
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Jiangsu Mingmao New Energy Technology Co ltd
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Priority to CN202011533726.3A priority Critical patent/CN112739162B/en
Publication of CN112739162A publication Critical patent/CN112739162A/en
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Publication of CN112739162B publication Critical patent/CN112739162B/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20927—Liquid coolant without phase change
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
    • 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
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses a high-efficiency photovoltaic charging pile, which comprises a shell; the top of the shell is provided with a solar photovoltaic panel; the shell is provided with a digital display screen, an operation panel, a charging seat and an air inlet cover; the bottom of the shell is provided with a base; the shell is internally provided with a PCB corresponding to the digital display screen, the operation panel and the charging seat; the PCB is electrically connected with the connector lug; the connector lug is electrically connected with the high-power charging module; and a heat dissipation assembly is arranged in the shell corresponding to the high-power charging module. The invention has good heat dissipation effect and high charging efficiency.

Description

High-efficient photovoltaic fills electric pile
Technical Field
The invention relates to the technical field of charging piles, in particular to a high-efficiency photovoltaic charging pile.
Background
The existing charging pile can emit a large amount of heat in the charging process, if the heat is not timely discharged, an electronic device inside the charging pile can be burnt, the charging pile can automatically reduce the charging power due to the overhigh temperature, and the charging efficiency is low.
Therefore, in view of the above current situation, there is an urgent need to develop a high-efficient photovoltaic charging pile.
Disclosure of Invention
The invention aims to provide an efficient photovoltaic charging pile to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an efficient photovoltaic charging pile comprises a shell; the top of the shell is provided with a solar photovoltaic panel; the shell is provided with a digital display screen, an operation panel, a charging seat and an air inlet cover; the bottom of the shell is provided with a base; the shell is internally provided with a PCB corresponding to the digital display screen, the operation panel and the charging seat; the PCB is electrically connected with the connector lug; the connector lug is electrically connected with the high-power charging module; and a heat dissipation assembly is arranged in the shell corresponding to the high-power charging module.
As a further scheme of the invention: the high-power charging module is arranged in the power supply cooling box; heat-conducting insulating elastic rubber is filled between the power supply cooling box and the high-power charging module; the power supply cooling box comprises an outer shell and an inner shell; a cooling cavity is formed between the outer shell and the inner shell.
As a further scheme of the invention: the heat dissipation assembly comprises a first cooling water pipe; the first cooling water pipe comprises a first pipe and a second pipe; one end of the first pipe is communicated with the first cooling water tank, and the other end of the first pipe is communicated with the cooling cavity; one end of the second pipe is communicated with the second cooling water tank, and the other end of the second pipe is communicated with the cooling cavity; the first cooling water tank is communicated with the second cooling water tank through a second cooling water pipe; a booster pump is arranged on the second cooling water pipe; a heat dissipation plate and a temperature sensor are arranged on one side of the first cooling water tank; and a heat exchanger is arranged in the shell corresponding to the heat dissipation plate.
As a further scheme of the invention: the heat exchanger comprises a heat dissipation box; one side of the inside of the heat dissipation box is provided with a first air box corresponding to the heat dissipation plate; a first cooling fan is arranged inside the first air box; the center of the first heat radiation fan is connected with the center of a first gear on the transmission mechanism through a first transmission shaft; the transmission mechanism comprises a first gear, a second gear and a driving gear; a first air outlet box is arranged on one side of the first air box, which is far away from the heat dissipation plate; the first air outlet box is communicated with the air outlet box through a first air pipe; the air outlet box is arranged on the back face of the shell.
As a further scheme of the invention: the driving gear is meshed with a first gear; the first gear is meshed with the second gear; the driving gear is connected with a servo driving motor through a rotating shaft; a second transmission shaft is arranged in the center of the second gear; one end of the second transmission shaft extends into the second air box and is connected with the second cooling fan; the second heat radiation fan is arranged corresponding to the hot end of the semiconductor refrigerator; the semiconductor refrigerator comprises a cold end and a hot end; the cold end of the semiconductor refrigerator extends into the power supply cooling box and is in contact connection with the heating part of the high-power charging module through the heat conduction copper block; a second air outlet box is arranged at the bottom of the second air box; and the second air outlet box is communicated with the air outlet box through a second air pipe.
Compared with the prior art, the invention has the beneficial effects that: through the arrangement of the heat-conducting insulating elastic rubber, the safety of the high-power charging module is ensured, and the heat-conducting efficiency is not influenced; the temperature of the environment where the high-power charging module is located is reduced through the arrangement of the power supply cooling box, the first cooling water pipe, the first cooling water tank, the heat dissipation plate and the second cooling water tank, so that heat dissipation is performed; the temperature of a heating part of the high-power charging module is specially reduced through the semiconductor refrigerator, so that the effective temperature reduction is carried out; through the arrangement of the first cooling fan, the first air outlet box, the second cooling fan, the transmission mechanism, the second air outlet box and the air outlet box, the temperatures of the heat end of the cooling plate and the heat end of the semiconductor refrigerator are reduced, and the cooling efficiency is improved. In conclusion, the invention has good heat dissipation effect and high charging efficiency.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic cross-sectional structural view of the present invention.
Fig. 3 is a schematic view showing what is the structure of the present invention.
In the figure: the solar photovoltaic panel heat dissipation device comprises a solar photovoltaic panel 1, a shell 2, a digital display screen 3, an operation panel 4, a charging seat 5, an air inlet cover 6, a base 7, a PCB 8, a power supply cooling box 9, a connector lug 10, a high-power charging module 11, a heat conduction insulating elastic rubber 12, a first cooling water pipe 13, a semiconductor refrigerator 14, a first cooling water tank 15, a heat dissipation plate 16, a heat dissipation box 17, a second cooling water tank 18, a second cooling water pipe 19, a first cooling fan 20, a second cooling fan 21, a transmission mechanism 22, a first air outlet box 23 and a second air outlet box 24.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
Referring to fig. 1 to 3, in an embodiment of the present invention, an efficient photovoltaic charging pile includes a housing 2; the top of the shell 2 is provided with a solar photovoltaic panel 1; the shell 2 is provided with a digital display screen 3, an operation panel 4, a charging seat 5 and an air inlet cover 6; the bottom of the shell 2 is provided with a base 7; a PCB (printed Circuit Board) 8 is arranged in the shell 2 corresponding to the digital display screen 3, the operation panel 4 and the charging seat 5; the PCB circuit board 8 is electrically connected with the connector lug 10; the connector lug 10 is electrically connected with the high-power charging module 11; and a heat radiation component is arranged in the shell 2 corresponding to the high-power charging module 11.
In this embodiment, the high power charging module 11 is installed inside the power supply cooling box 9; a heat-conducting insulating elastic rubber 12 is filled between the power supply cooling box 9 and the high-power charging module 11; the power supply cooling box 9 comprises an outer shell and an inner shell; a cooling cavity is formed between the outer shell and the inner shell.
In this embodiment, the heat dissipation assembly includes a first cooling water pipe 13; the first cooling water pipe 13 comprises a first pipe and a second pipe; one end of the first pipe is communicated with the first cooling water tank 15, and the other end of the first pipe is communicated with the cooling cavity; one end of the second pipe is communicated with the second cooling water tank 18, and the other end of the second pipe is communicated with the cooling cavity; the first cooling water tank 15 is communicated with a second cooling water tank 18 through a second cooling water pipe 19; a booster pump is arranged on the second cooling water pipe 19; a heat dissipation plate 16 and a temperature sensor are arranged on one side of the first cooling water tank 15; a heat exchanger is arranged in the shell 2 corresponding to the heat dissipation plate 16; through the arrangement of the heat-conducting insulating elastic rubber 12, the safety of the high-power charging module 11 is ensured, and the heat-conducting efficiency is not influenced; through the setting of power supply cooling box 9, first condenser tube 13, cooling water tank 15, heating panel 16 and No. two cooling water tank 18, reduce the temperature of the environment that high power module 11 that charges is located to dispel the heat.
In the present embodiment, the heat exchanger includes a heat radiation tank 17; one side in the heat dissipation box 17 is provided with a first air box corresponding to the heat dissipation plate 16; a first cooling fan 20 is arranged inside the first air box; the center of the first cooling fan 20 is connected with the center of a first gear on the transmission mechanism 22 through a first transmission shaft; the transmission mechanism 22 comprises a first gear, a second gear and a driving gear; a first air outlet box 23 is arranged on one side of the first air box far away from the heat dissipation plate 16; the first air outlet box 23 is communicated with the air outlet box through a first air pipe; the air outlet box is arranged on the back of the shell 2.
Example 2
Referring to fig. 2 or 3, the driving gear is engaged with a first gear; the first gear is meshed with the second gear; the driving gear is connected with a servo driving motor through a rotating shaft; a second transmission shaft is arranged in the center of the second gear; one end of the second transmission shaft extends into the second air box and is connected with a second cooling fan 21; the second heat radiation fan 21 is arranged corresponding to the hot end of the semiconductor refrigerator 14; the semiconductor cooler 14 includes a cold side and a hot side; the cold end of the semiconductor refrigerator 14 extends into the power supply cooling box 9 and is in contact connection with the heating part of the high-power charging module 11 through a heat conduction copper block; a second air outlet box 24 is arranged at the bottom of the second air box; the second air outlet box 24 is communicated with the air outlet box through a second air pipe; the temperature of the heating part of the high-power charging module 11 is specially reduced through the semiconductor refrigerator 14 so as to effectively reduce the temperature; through the arrangement of the first cooling fan 20, the first air outlet box 23, the second cooling fan 21, the transmission mechanism 22, the second air outlet box 24 and the air outlet box, the temperatures of the cooling plate 16 and the hot end of the semiconductor refrigerator 14 are reduced, and the cooling efficiency is improved.
The working principle of the invention is as follows: through the arrangement of the heat-conducting insulating elastic rubber 12, the safety of the high-power charging module 11 is ensured, and the heat-conducting efficiency is not influenced; the temperature of the environment where the high-power charging module 11 is located is reduced through the arrangement of the power supply cooling box 9, the first cooling water pipe 13, the first cooling water tank 15, the heat dissipation plate 16 and the second cooling water tank 18, so that heat dissipation is performed; the temperature of the heating part of the high-power charging module 11 is specially reduced through the semiconductor refrigerator 14 so as to effectively reduce the temperature; through the arrangement of the first cooling fan 20, the first air outlet box 23, the second cooling fan 21, the transmission mechanism 22, the second air outlet box 24 and the air outlet box, the temperatures of the cooling plate 16 and the hot end of the semiconductor refrigerator 14 are reduced, and the cooling efficiency is improved. In conclusion, the invention has good heat dissipation effect and high charging efficiency.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. An efficient photovoltaic charging pile comprises a shell (2); the solar photovoltaic power generation device is characterized in that a solar photovoltaic panel (1) is arranged at the top of the shell (2); the shell (2) is provided with a digital display screen (3), an operation panel (4), a charging seat (5) and an air inlet cover (6); a base (7) is installed at the bottom of the shell (2); a PCB (printed circuit board) (8) is arranged in the shell (2) corresponding to the digital display screen (3), the operation panel (4) and the charging seat (5); the PCB circuit board (8) is electrically connected with the connector lug (10); the connector lug (10) is electrically connected with the high-power charging module (11); and a heat dissipation assembly is arranged in the shell (2) corresponding to the high-power charging module (11).
2. The high-efficiency photovoltaic charging pile according to claim 1, characterized in that the high-power charging module (11) is mounted inside a power supply cooling box (9); heat-conducting insulating elastic rubber (12) is filled between the power supply cooling box (9) and the high-power charging module (11); the power supply cooling box (9) comprises an outer shell and an inner shell; a cooling cavity is formed between the outer shell and the inner shell.
3. The high efficiency photovoltaic charging pile according to claim 1, characterized in that said heat dissipating assembly comprises a first cooling water pipe (13); the first cooling water pipe (13) comprises a first pipe and a second pipe; one end of the first pipe is communicated with the first cooling water tank (15), and the other end of the first pipe is communicated with the cooling cavity; one end of the second pipe is communicated with a second cooling water tank (18), and the other end of the second pipe is communicated with the cooling cavity; the first cooling water tank (15) is communicated with the second cooling water tank (18) through a second cooling water pipe (19); a booster pump is arranged on the second cooling water pipe (19); a heat dissipation plate (16) and a temperature sensor are arranged on one side of the first cooling water tank (15); and a heat exchanger is arranged in the shell (2) corresponding to the heat dissipation plate (16).
4. A high efficiency photovoltaic charging pile according to claim 3, characterized in that said heat exchanger comprises a heat dissipation tank (17); one side in the heat dissipation box (17) is provided with a first air box corresponding to the heat dissipation plate (16); a first heat radiation fan (20) is arranged in the first air box; the center of the first heat radiation fan (20) is connected with the center of a first gear on the transmission mechanism (22) through a first transmission shaft; the transmission mechanism (22) comprises a first gear, a second gear and a driving gear; a first air outlet box (23) is arranged on one side of the first air box, which is far away from the heat dissipation plate (16); the first air outlet box (23) is communicated with the air outlet box through a first air pipe; the air outlet box is arranged on the back surface of the shell (2).
5. The efficient photovoltaic charging pile according to claim 4, wherein the driving gear is meshed with a first gear; the first gear is meshed with the second gear; the driving gear is connected with a servo driving motor through a rotating shaft; a second transmission shaft is arranged in the center of the second gear; one end of the second transmission shaft extends into the second air box and is connected with a second cooling fan (21); the second heat radiation fan (21) is arranged corresponding to the hot end of the semiconductor refrigerator (14); the semiconductor refrigerator (14) comprises a cold end and a hot end; the cold end of the semiconductor refrigerator (14) extends into the power supply cooling box (9) and is in contact connection with the heating part of the high-power charging module (11) through a heat-conducting copper block; a second air outlet box (24) is arranged at the bottom of the second air box; the second air outlet box (24) is communicated with the air outlet box through a second air pipe.
CN202011533726.3A 2020-12-23 2020-12-23 High-efficient photovoltaic fills electric pile Active CN112739162B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011533726.3A CN112739162B (en) 2020-12-23 2020-12-23 High-efficient photovoltaic fills electric pile

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Application Number Priority Date Filing Date Title
CN202011533726.3A CN112739162B (en) 2020-12-23 2020-12-23 High-efficient photovoltaic fills electric pile

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CN112739162A true CN112739162A (en) 2021-04-30
CN112739162B CN112739162B (en) 2023-01-03

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015122006A1 (en) * 2014-02-17 2015-08-20 株式会社Ｆｏｍｍ Air-conditioning device for small vehicle
CN108539324A (en) * 2018-06-25 2018-09-14 上海电机学院 A kind of electric automobile power battery cooling device
CN109228917A (en) * 2018-08-03 2019-01-18 金华安靠电源科技有限公司 A kind of charging pile of electric car
CN208889801U (en) * 2018-11-12 2019-05-21 南京世博电控技术有限公司 A kind of battery management system of low speed active equalization
US20200039319A1 (en) * 2018-08-03 2020-02-06 Chuan-Sheng Chen Vehicle air-conditioning device using semiconductor as cooling core
CN110913671A (en) * 2019-12-11 2020-03-24 武汉上汉科技有限公司 Heat dissipation protection device of electromechanical device
CN210258055U (en) * 2019-07-31 2020-04-07 河南盛泰科技有限公司 Electric automobile fills electric pile
CN210721340U (en) * 2019-12-19 2020-06-09 唐山师范学院 High-efficient heat dissipation frame of notebook
CN211075579U (en) * 2019-08-17 2020-07-24 惠安县易尚手新材料有限公司 New energy charging pile with excellent heat dissipation performance
CN211878553U (en) * 2020-03-09 2020-11-06 陈文英 Computer mainframe that radiating effect is good

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015122006A1 (en) * 2014-02-17 2015-08-20 株式会社Ｆｏｍｍ Air-conditioning device for small vehicle
CN108539324A (en) * 2018-06-25 2018-09-14 上海电机学院 A kind of electric automobile power battery cooling device
CN109228917A (en) * 2018-08-03 2019-01-18 金华安靠电源科技有限公司 A kind of charging pile of electric car
US20200039319A1 (en) * 2018-08-03 2020-02-06 Chuan-Sheng Chen Vehicle air-conditioning device using semiconductor as cooling core
CN208889801U (en) * 2018-11-12 2019-05-21 南京世博电控技术有限公司 A kind of battery management system of low speed active equalization
CN210258055U (en) * 2019-07-31 2020-04-07 河南盛泰科技有限公司 Electric automobile fills electric pile
CN211075579U (en) * 2019-08-17 2020-07-24 惠安县易尚手新材料有限公司 New energy charging pile with excellent heat dissipation performance
CN110913671A (en) * 2019-12-11 2020-03-24 武汉上汉科技有限公司 Heat dissipation protection device of electromechanical device
CN210721340U (en) * 2019-12-19 2020-06-09 唐山师范学院 High-efficient heat dissipation frame of notebook
CN211878553U (en) * 2020-03-09 2020-11-06 陈文英 Computer mainframe that radiating effect is good

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