CN113400977A - Prevention of seepage water fill electric pile - Google Patents
Prevention of seepage water fill electric pile Download PDFInfo
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- CN113400977A CN113400977A CN202110744311.9A CN202110744311A CN113400977A CN 113400977 A CN113400977 A CN 113400977A CN 202110744311 A CN202110744311 A CN 202110744311A CN 113400977 A CN113400977 A CN 113400977A
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- water
- magnetic
- charging pile
- service pipe
- pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/302—Cooling of charging equipment
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- 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
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- 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
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- 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)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of new energy charging piles and discloses an anti-seepage charging pile which comprises a charging pile body, a cable, a water collecting tank, a water delivery tank and a magnetic water service pipe, wherein the top of the inner wall of the water delivery tank is fixedly connected with a limiting block, the lower side of the limiting block of the water delivery tank is connected with a magnetic sliding block in a sliding mode, a first diversion groove is formed in the magnetic sliding block, and a magnetic-sensing resistor is embedded in the outer side of the charging pile body, which is located at the bottom of the water delivery tank. According to the invention, through designing the water collecting tank, the water tank, the magnetic slider and the magnetic water service pipe, rainwater enters the water collecting tank through the water inlet hole and acts on the magnetic slider through the water delivery groove when the charging pile is used in rainy days, so that the magnetic slider slides downwards to overcome the magnetic repulsion force of the magnetic water service pipe, meanwhile, the rainwater enters the magnetic water service pipe through the first water diversion groove and cools the radiating fins exchanging heat with the interior of the charging pile, and finally, the rainwater flows out through the water service pipe and the water outlet hole, so that the internal water seepage of the charging pile can be prevented, and the internal heat dissipation and cooling of the charging pile can be promoted.
Description
Technical Field
The invention relates to the technical field of new energy charging piles, in particular to an anti-seepage charging pile.
Background
With the requirement of energy conservation and environmental protection, new energy automobiles are popular, the main power source of the new energy automobiles is electric energy, and charging piles are necessary supporting facilities of the new energy automobiles.
The input and the alternating current network lug connection of new energy automobile stake of charging, the output charges with charging plug connection supply electric automobile, but because the use occasion that fills electric pile mainly divide into the garage, electric pile etc. is filled to service area and private, the infiltration condition when the stake of charging in the stake of private installation and the garage need not to consider the rainy day use, but install the stake of charging in the service area, because the parking area of service area is open parking area, the inside that the gap entering that the stake of charging on can be followed to the rainwater when having in the rainy day use, cause the inside electronic component of stake to damage or even the circuit short circuit leads to filling the destruction of electric pile, the life of stake is filled in the influence.
Disclosure of Invention
Aiming at the defects of the existing charging pile in the use process in the background technology, the invention provides the anti-seepage charging pile which has the advantages of preventing water from seeping inside the charging pile when the charging pile is used in rainy days and cooling the inside of the charging pile, and solves the technical problems in the background technology.
The invention provides the following technical scheme: a water seepage prevention charging pile comprises a charging pile, a cable, a water collecting tank, a water conveying tank and a magnetic water through pipe, wherein a limiting block is fixedly connected to the top of the inner wall of the water conveying tank, a magnetic slider is slidably connected to the lower side of the limiting block of the water conveying tank, a first water diversion groove is formed in the magnetic slider, a magnetic resistance resistor is embedded in the outer side of the bottom of the water conveying tank of the charging pile, a second water diversion groove is formed in the middle of the magnetic water through pipe, a water flowing pipe is fixedly connected to the lower portion of the outer side of the magnetic water through pipe, a heat conducting sheet is embedded in the magnetic water through pipe, an air vent is formed in the side wall of the middle of a cavity in the lower portion of the charging pile, a sliding rod is fixedly connected to the middle of one side of the electromagnetic plate close to the inside of the charging pile, air holes are formed in the two sides of the electromagnetic plate, a spring is fixedly connected to the bottom of the sliding rod, and a magnetic stop block is fixedly connected to the top of the spring, and water outlet holes are formed in the corresponding positions of the side walls of the charging piles and the water flowing pipe.
Preferably, fill electric pile and be located the lateral wall at water catch bowl top and seted up the inlet opening, the inlet opening is with water catch bowl and the outside intercommunication of filling electric pile.
Preferably, the end of the heat conducting strip extending out of the side wall of the magnetic water service pipe is positioned in the cavity at the lower part of the charging pile, and the end of the heat conducting strip positioned in the magnetic water service pipe extends into the second water diversion groove.
Preferably, the magnetic resistance is set to be larger as the magnetism is larger, and smaller as the magnetism is smaller, and the magnetic resistance is used for adjusting the magnitude of the current value required by the electromagnetic plate.
Preferably, the magnetism of the magnetic slider is the same as that of the magnetic water pipe, and the magnetism of the electromagnetic plate is the same as that of the magnetic stopper.
Preferably, when rainwater flows through the magnetic sliding block, the magnetic repulsion force of the magnetic water pipe to the magnetic sliding block is smaller than the sum of the weight of the magnetic sliding block and the weight of the rainwater.
Preferably, the bottom surface of the lower branch of the second water guide groove is an upward arc-shaped surface.
The invention has the following beneficial effects:
1. according to the invention, through designing the water collecting tank, the water tank, the magnetic slider and the magnetic water service pipe, rainwater enters the water collecting tank through the water inlet hole and acts on the magnetic slider through the water delivery groove when the charging pile is used in rainy days, so that the magnetic slider slides downwards to overcome the magnetic repulsion force of the magnetic water service pipe, meanwhile, the rainwater enters the magnetic water service pipe through the first water diversion groove and cools the radiating fins exchanging heat with the interior of the charging pile, and finally, the rainwater flows out through the water service pipe and the water outlet hole, so that the internal water seepage of the charging pile can be prevented, and the internal heat dissipation and cooling of the charging pile can be promoted.
2. According to the invention, by designing the magnetic water service pipe, the magneto-resistor, the vent holes, the electromagnetic plate, the sliding rod, the air holes, the spring and the magnetic stop block, when the charging pile is used in rainy days, the magnetism of the magnetic water service pipe arranged at the inner ring of the spiral cable is increased by charging the automobile through the cable, the magnetic slide block is enabled to move upwards under the action of the magnetic repulsion force of the magnetic water service pipe under the condition of not being under the pressure of rainwater, at the moment, the resistance value of the magneto-resistor is reduced, the magnetic force of the electromagnetic plate is increased through the magnetic force of the electromagnetic plate, the magnetic stop block is driven by the magnetic repulsion force of the electromagnetic plate, the elastic potential energy of the spring is overcome, the vent holes are opened, the two vent holes are opened, the convective air is formed, and the effect of heat dissipation and temperature reduction for the interior of the charging pile is realized.
3. According to the invention, through the design of the magnetic water service pipe and the heat conducting fins, when the charging pile is used in rainy days, external air can enter the magnetic water service pipe through the water collecting groove and the water conveying groove, and meanwhile, the flowing air can carry out heat dissipation and cooling on the heat conducting fins which exchange heat with the interior of the charging pile, so that the heat dissipation and cooling of the interior of the charging pile are promoted, and the phenomenon that the aging of internal electronic elements is accelerated due to overhigh temperature of the interior of the charging pile when the charging pile is used is avoided, and the service life of the charging pile is influenced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of the magnetic slider in an upward movement state according to the present invention;
FIG. 3 is a schematic view of the inner structure of the magnetic water tube of the present invention;
FIG. 4 is an enlarged view of the structure of FIG. 1.
In the figure: 1. charging piles; 11. a water inlet hole; 12. a vent hole; 13. an electromagnetic plate; 131. a slide bar; 132. air holes; 133. a spring; 134. a magnetic stop; 14. a water outlet hole; 2. a cable; 3. a charging head; 4. a water collection tank; 5. a water delivery tank; 51. a limiting block; 52. a magnetic slider; 521. a first flume; 53. a magneto-resistor; 6. a magnetic water pipe; 61. a second flume; 62. a water flow pipe; 63. a heat conductive sheet.
Detailed Description
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.
Referring to fig. 1-4, an anti-seepage charging pile comprises a charging pile 1, a cable 2 is disposed inside the charging pile 1, a charging head 3 is fixedly connected to one end of the cable 2 extending out of the charging pile 1, a water collecting tank 4 is disposed on the middle upper portion of the charging pile 1, a water inlet 11 is disposed on the side wall of the charging pile 1 located on the top of the water collecting tank 4, the water inlet 11 communicates the water collecting tank 4 with the outer side of the charging pile 1 to ensure that rainwater can enter the water collecting tank 4, a water delivery tank 5 is disposed in the middle of the bottom side of the water collecting tank 4 of the charging pile 1, a limiting block 51 is fixedly connected to the top of the inner wall of the water delivery tank 5, a magnetic slider 52 is slidably connected to the lower side of the limiting block 51 of the water delivery tank 5, a first water diversion tank 521 is disposed inside the magnetic slider 52, a magnetic resistor 53 is embedded on the outer side of the bottom of the charging pile 1, a magnetic water pipe 6 is fixedly connected to the inner side of the cable 2 in the middle of the bottom cavity of the charging pile 1, the magnetism of the magnetic slider 52 is the same as that of the magnetic water pipe 6, when rainwater flows through the magnetic slider 52, the magnetic repulsion force of the magnetic water pipe 6 to the magnetic slider 52 is smaller than the weight of the magnetic slider 52 and the rainwater, so that the magnetic slider 52 can slide upwards under the magnetic repulsion force of the magnetic water pipe 6 when no rainwater exists, the middle part of the magnetic water pipe 6 is provided with a second water guiding groove 61, the bottom surface of the lower branch of the second water guiding groove 61 is provided with an upward arc surface, so that no water is left in the second water guiding groove 61, the second water guiding groove 61 is communicated with the lower outlet of the first water guiding groove 521, the lower part of the outer side of the magnetic water pipe 6 is fixedly connected with a water flowing pipe 62, the water flowing pipe 62 is communicated with the lower outlet of the second water guiding groove 61, a heat conducting sheet 63 is embedded in the magnetic water pipe 6, one end of the heat conducting sheet 63 extending out of the side wall of the magnetic water pipe 6 is, one end of the heat conducting sheet 63, which is positioned inside the magnetic water service pipe 6, extends into the second water guiding groove 61 to ensure that heat inside the charging pile 1 can be dissipated by rainwater or air inside the second water guiding groove 61 after heat exchange by the heat conducting sheet 63, the side wall of the charging pile 1, which is positioned in the middle of the lower cavity, is provided with a vent hole 12, the side wall of the vent hole 12 is fixedly connected with an electromagnetic plate 13, the magnetic resistance 53 is set to be larger as the magnetism is larger, the magnetic resistance is smaller as the magnetism is larger, the magnetic resistance 53 is used for adjusting the required current value of the electromagnetic plate 13, the middle part of one side of the electromagnetic plate 13, which is close to the charging pile 1, is fixedly connected with a sliding rod 131, two sides of the electromagnetic plate 13, which are positioned on the sliding rod 131, are provided with air holes 132, the bottom of the sliding rod 131 is fixedly connected with a spring 133, the top of the spring 133 is fixedly connected with a magnetic block 134, the magnetism of the electromagnetic plate 13 is the same as that the magnetism of the magnetic block 134, so as to ensure that the vent hole 12 can be opened by magnetic repulsion force after the magnetism of the electromagnetic plate 13 is increased to dissipate heat inside the charging pile 1, the lateral wall of the charging pile 1 is provided with a water outlet 14 at the position corresponding to the water flowing pipe 62, and the water outlet 14 is communicated with the water flowing pipe 62.
When the charging pile 1 is used for charging an automobile in rainy days, rainwater can enter the water collecting groove 4 and can act on the magnetic slider 52 to enable the magnetic slider 52 to overcome the magnetic repulsion force of the magnetic water service pipe 6 to slide downwards, meanwhile, the rainwater can enter the second water guiding groove 61 inside the magnetic water service pipe 6 through the water conveying groove 5 and the first water guiding groove 521, the rainwater passing through the second water guiding groove 61 can cool and dissipate heat of the heat conducting sheet 63 exchanging heat with the inside of the charging pile 1, the cooling and heat dissipation inside the charging pile 1 can be facilitated, meanwhile, short circuit between electronic components caused by rainwater permeating into the inside of the charging pile 1 can be avoided, when the charging pile is used for charging the automobile in no rain, the magnetic slider 52 cannot overcome the magnetic repulsion force of the magnetic water service pipe 6 to slide upwards due to the absence of rainwater impact, the magnetic force induced by the magnetic resistor 53 is reduced to reduce the resistance, the magnetic force of the electromagnetic plate 13 is increased, and the magnetic repulsion force can enable the magnetic stop 134 to overcome the elastic potential energy of the spring 133 to move and open the ventilation opening through the magnetic repulsion force Hole 12, make through opening of two symmetrical air vents 12 and fill electric pile 1 inside formation convection current air and promote to fill electric pile 1 inside heat dissipation of cooling down, fill the air accessible inlet opening 11 in the electric pile 1 outside simultaneously and cool down the conducting strip in entering magnetism water service pipe 6 through water delivery groove 5, further promote to fill the heat dissipation cooling of electric pile 1 inside, avoid filling electric pile 1 when charging the car, because of the power leads to filling the temperature of electric pile 1 inside too high and then accelerating electronic component's ageing rate greatly, the life of electric pile 1 is filled in the influence.
The use method (working principle) of the invention is as follows:
firstly, when the charging pile 1 is used in rainy days, rainwater enters the water collecting tank 4 through the water inlet hole 11 and acts on the magnetic slide block 52 through the water conveying tank 5, and simultaneously enters the second water guiding tank 61 in the magnetic water through pipe 6 through the first water guiding tank 521, heat exchange is carried out through heat of the heat conducting sheet 63 acting on the inside of the charging pile 1, and the heat conducting sheet 63 is cooled and radiated through rainwater flowing through the second water guiding tank 61, so that heat radiation and cooling in the charging pile 1 are promoted, rainwater finally flows out of the charging pile 1 through the water pipe 62 and the water outlet hole 14, short circuit between internal electronic elements and even burning of the charging pile caused by rainwater permeating into the charging pile 1 are avoided, secondly, when the charging pile 1 is used in rainy days, the magnetic force of the magnetic water through pipe 6 is increased by electrifying the cable 2 when the charging pile 1 is used, and the magnetic slide block 52 slides upwards under the magnetic repulsion force of the magnetic water through pipe 6 due to the weight of no rainwater on the magnetic slide block 52, make the magnetic force that magnetic resistance 53 responded to diminish and cause magnetic resistance 53's resistance value to reduce and then make the magnetic force increase of electromagnetic plate 13, order about magnetism dog 134 and overcome the elastic potential energy removal of spring 133 by the magnetic repulsion of electromagnetic plate 13 and open air vent 12, make through opening of two symmetrical air vents 12 fill the inside convection current air that forms of electric pile 1 and promote to fill the inside heat dissipation that cools down of electric pile 1, avoid filling the ageing that electric pile 1 inside high temperature leads to accelerating electronic component when charging, the influence fills electric pile 1's life.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a stake of charging of prevention of seepage water, is including filling electric pile (1), cable (2), water catch bowl (4), water delivery groove (5) and magnetism water service pipe (6), its characterized in that: the top of the inner wall of the water delivery tank (5) is fixedly connected with a limiting block (51), the lower side of the water delivery tank (5) located at the limiting block (51) is connected with a magnetic slider (52) in a sliding mode, a first water diversion groove (521) is formed in the magnetic slider (52), a magneto-dependent resistor (53) is embedded in the outer side of the bottom of the water delivery tank (5) of the charging pile (1), a second water diversion groove (61) is formed in the middle of the magnetic water service pipe (6), a water flowing pipe (62) is fixedly connected to the lower portion of the outer side of the magnetic water service pipe (6), heat conducting sheets (63) are embedded in the magnetic water service pipe (6), air holes (12) are formed in the side wall of the middle of a cavity of the charging pile (1), a sliding rod (131) is fixedly connected to the middle of one side of the electromagnetic plate (13) close to the inner side of the charging pile (1), and air holes (132) are formed in the two sides of the electromagnetic plate (13), the bottom of slide bar (131) fixedly connected with spring (133), the top fixedly connected with magnetism dog (134) of spring (133), electric pile (1) lateral wall and the department that corresponds of flowing water pipe (62) have seted up apopore (14).
2. The impermeable charging pile according to claim 1, characterized in that: fill electric pile (1) and be located the lateral wall at water catch bowl (4) top and seted up inlet opening (11), inlet opening (11) with water catch bowl (4) and the outside intercommunication of filling electric pile (1).
3. The impermeable charging pile according to claim 1, characterized in that: one end of the heat conducting sheet (63) extending out of the side wall of the magnetic water service pipe (6) is located in a cavity at the lower part of the charging pile (1), and one end of the heat conducting sheet (63) located inside the magnetic water service pipe (6) extends into the second water guiding groove (61).
4. The impermeable charging pile according to claim 1, characterized in that: the magneto-resistor (53) is set to have larger resistance value and smaller resistance value, and the magneto-resistor (53) is used for adjusting the magnitude of the current value required by the electromagnetic plate (13).
5. The impermeable charging pile according to claim 1, characterized in that: the magnetism of the magnetic slide block (52) is the same as that of the magnetic water pipe (6), and the magnetism of the electromagnetic plate (13) is the same as that of the magnetic stopper (134).
6. The impermeable charging pile according to claim 1, characterized in that: when rainwater flows through the magnetic sliding block (52), the magnetic repulsion force of the magnetic water pipe (6) to the magnetic sliding block (52) is smaller than the weight of the magnetic sliding block (52) and the rainwater.
7. The impermeable charging pile according to claim 1, characterized in that: the bottom surface of the lower branch of the second water guide groove (61) is an upward arc-shaped surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110744311.9A CN113400977B (en) | 2021-07-01 | 2021-07-01 | Prevention of seepage water fill electric pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110744311.9A CN113400977B (en) | 2021-07-01 | 2021-07-01 | Prevention of seepage water fill electric pile |
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| Publication Number | Publication Date |
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| CN113400977A true CN113400977A (en) | 2021-09-17 |
| CN113400977B CN113400977B (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110744311.9A Active CN113400977B (en) | 2021-07-01 | 2021-07-01 | Prevention of seepage water fill electric pile |
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| CN (1) | CN113400977B (en) |
Cited By (1)
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| CN115339340A (en) * | 2022-09-01 | 2022-11-15 | 河南工学院 | New energy vehicle charging device with cooling function |
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| JP2014117057A (en) * | 2012-12-10 | 2014-06-26 | Nissan Motor Co Ltd | Non-contact electric power supply device |
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| CN115339340A (en) * | 2022-09-01 | 2022-11-15 | 河南工学院 | New energy vehicle charging device with cooling function |
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| CN113400977B (en) | 2022-02-01 |
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