CN212685290U - Charging pile with various heat dissipation structures - Google Patents
Charging pile with various heat dissipation structures Download PDFInfo
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- CN212685290U CN212685290U CN202021324930.XU CN202021324930U CN212685290U CN 212685290 U CN212685290 U CN 212685290U CN 202021324930 U CN202021324930 U CN 202021324930U CN 212685290 U CN212685290 U CN 212685290U
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 38
- 241000237983 Trochidae Species 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 230000005855 radiation Effects 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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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Abstract
本实用新型涉及充电桩散热技术领域，公开了一种具有多种散热结构的充电桩，包括：自然风冷回路、环路热管回路以及送风装置，送风装置包括第一风道和套设于第一风道外侧的第二风道，第一风道的底端转动安装有风门；第一风道用于为环路热管回路提供冷风，第二风道用于为自然风冷回路提供冷风；风门可关闭第一风道或者第二风道。本实用新型提供的具有多种散热结构的充电桩，自然风冷回路与环路热管回路相结合，自然风冷回路对充电桩内大面积区域进行强制对流冷却，当充电模块出现局部高温，环路热管回路针对充电模块高热流密度区域进行高效散热，防止局部热点的出现；在满足电动汽车快速充电的同时，仍保证高效散出充电桩内的产热。
The utility model relates to the technical field of heat dissipation of charging piles, and discloses a charging pile with various heat dissipation structures, comprising: a natural air cooling circuit, a loop heat pipe circuit and an air supply device. The air supply device comprises a first air duct and a sleeve. The second air duct on the outside of the first air duct, the bottom end of the first air duct is rotatably installed with a damper; the first air duct is used to provide cold air for the loop heat pipe circuit, and the second air duct is used to provide the natural air cooling circuit. Cold air; the damper can close the first air duct or the second air duct. The charging pile provided by the utility model has various heat dissipation structures, the natural air cooling circuit is combined with the loop heat pipe circuit, and the natural air cooling circuit performs forced convection cooling on a large area in the charging pile. The road heat pipe loop conducts efficient heat dissipation for the high heat flux density area of the charging module to prevent the appearance of local hot spots; while satisfying the fast charging of electric vehicles, it still ensures efficient heat dissipation in the charging pile.
Description
Technical Field
The utility model relates to a fill electric pile heat dissipation technical field, especially relate to a fill electric pile with multiple heat radiation structure.
Background
The vehicle is a vehicle that has its own power to drive and can be driven by motor without the need of rail or electric power installation. In a broad sense, a vehicle having four-wheel drive is generally called an automobile. Most of the power of the current automobiles is fuel oil, and the global temperature generally rises along with the emission of automobile exhaust and industrial waste gas. The electric vehicle (BEV) is driven by a motor to drive wheels by using a vehicle-mounted power supply as power, and meets various requirements of road traffic and safety regulations. Because the influence on the environment is smaller than that of the traditional automobile, the prospect is widely seen, at present, the electric automobile is used by more and more people due to the characteristics of energy conservation, environmental protection and economy, the electric automobile industry is rapidly developed, and the development of the related industry of the corresponding electric automobile is more and more valued by the society.
The charging pile is the most important facility in the charging and battery replacing system of the electric automobile, provides alternating current electric energy for the electric automobile with the vehicle-mounted charger by utilizing a special charging interface and adopting a conduction mode, and has corresponding communication, charging and safety protection functions. The electric automobile is charged by coin insertion or purchase of a special IC card. Because fill inside being equipped with a large amount of electronic components of electric pile, can produce more heat when the operation, especially in hot summer, if not in time with these heat discharges, easily lead to filling burning out of electric pile.
The existing charging pile cooling system can only cool the charging pile system through a heat pipe or natural air cooling, has constant and very limited cooling capacity, and cannot timely and effectively dissipate heat of local high-heat-yield areas.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a fill electric pile with multiple heat radiation structure for solve or partially solve the current relatively poor problem of electric pile cooling system that fills heat dissipation efficiency.
An embodiment of the utility model provides a fill electric pile with multiple heat radiation structure, include: the air supply device comprises a first air channel and a second air channel sleeved outside the first air channel, and the bottom end of the first air channel is rotatably provided with an air door; the first air duct is used for providing cold air for the loop heat pipe loop, and the second air duct is used for providing cold air for the natural air cooling loop; the damper may close the first air passage or the second air passage.
On the basis of the technical scheme, the natural air cooling loop comprises an air outlet channel and an air inlet channel arranged outside the charging module in a surrounding mode, the air outlet channel is communicated with the air inlet channel, and the second air channel is communicated with the air inlet channel.
On the basis of the technical scheme, the air exhaust fan is installed on the air outlet channel.
On the basis of the technical scheme, the loop heat pipe loop comprises a first heat exchanger, a vapor pipeline, a second heat exchanger and a liquid pipeline which are sequentially communicated end to end; the first heat exchanger is arranged in a high heat flow density area of the charging module, and the first air duct is used for providing cold air for the second heat exchanger.
On the basis of the technical scheme, the second heat exchanger is installed inside the first air duct.
On the basis of the technical scheme, the loop heat pipe of the second heat exchanger is a gravity loop heat pipe without a capillary core or a loop heat pipe with a capillary core.
On the basis of the technical scheme, the loop heat pipe loop comprises a plurality of first heat exchangers connected in parallel.
On the basis of the technical scheme, the first heat exchanger comprises a top shell and a bottom shell, the top shell is arranged on the bottom shell, and an accommodating cavity is defined between the top shell and the bottom shell; the capillary core is arranged in the accommodating cavity to divide the accommodating cavity into a pressure equalizing cavity and a liquid storage cavity, and a steam channel communicated with the pressure equalizing cavity is formed in the capillary core.
On the basis of the technical scheme, the capillary core is prepared by sintering copper powder at the temperature of 300-500 ℃.
On the basis of the technical scheme, the top shell is detachably mounted on the bottom shell.
The embodiment of the utility model provides a fill electric pile with multiple heat radiation structure, through the corresponding rotation of air door, the work of nimble control natural air cooling return circuit and loop heat pipe circuit, according to the heat dissipation demand of the module of charging, natural air cooling return circuit and loop heat pipe circuit can the autonomous working or work together. The charging pile with multiple heat dissipation structures provided by the embodiment of the utility model has the advantages that the natural air cooling loop is combined with the loop heat pipe loop, forced convection cooling is carried out on a large-area in the charging pile by the natural air cooling loop according to the proportion of the opening degree of the flexible adjusting air door for the heat generation quantity of the charging module, when the charging module has local high temperature, the loop heat pipe loop carries out high-efficiency heat dissipation aiming at the high heat flow density area of the charging module, the occurrence of local hot spots is prevented, and the normal work of the charging module is ensured; satisfy electric automobile quick charge's while, still guarantee the heat production in the high-efficient effluence fills electric pile.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an operating state of a charging pile with multiple heat dissipation structures according to an embodiment of the present invention;
fig. 2 is a schematic view of another working state of the charging pile with multiple heat dissipation structures according to the embodiment of the present invention;
fig. 3 is a schematic view of another working state of the charging pile with multiple heat dissipation structures according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of the first heat exchanger according to the embodiment of the present invention.
Reference numerals:
1. a vapor line; 2. a second heat exchanger; 3. a liquid line; 4. a first heat exchanger; 5. an air inlet channel; 6. an exhaust fan; 7. an air outlet channel; 8. an air supply device; 9. a loop heat pipe; 10. an air inlet; 11. a capillary core; 12. a bottom case; 13. a top shell; 14. a liquid storage cavity; 15. a pressure equalizing cavity; 16. a vapor channel; 17. a charging module; 18. a damper.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, 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 efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses fill electric pile with multiple heat radiation structure, include: the air supply device 8 comprises a first air channel and a second air channel sleeved outside the first air channel, and the bottom end of the first air channel is rotatably provided with an air door 18; the first air duct is used for providing cold air for the loop heat pipe loop, and the second air duct is used for providing cold air for the natural air cooling loop; the damper 18 may close the first air passage or the second air passage.
The natural air cooling loop is used for carrying out forced convection cooling on a large-area in the charging pile; when the charging module 17 has local high temperature, the loop heat pipe loop is used for efficiently dissipating heat in a high heat flux density area of the charging module 17, so that local hot spots are prevented, and the charging module 17 is ensured to normally work.
It can be understood that the air supply device 8 is used for conveying external cold air to the first air duct and the second air duct, that is, the external cold air enters the first air duct and the second air duct through the air inlet 10. The size of the first air duct is smaller than that of the second air duct, the inner wall of the second air duct and the outer wall of the first air duct form an air duct for providing cold air for the natural air cooling loop, and the bottom end of the first air duct is located above the bottom end of the second air duct; or the top end of the second air duct is lower than the bottom end of the first air duct.
The following description will be given by taking an example in which the top end of the second air duct is located at a position lower than the bottom end of the first air duct.
And air openings are formed in the bottom end of the first air duct and the top end of the second air duct, an air door 18 capable of rotating 180 degrees is arranged at the bottom end of the first air duct, and the corresponding air openings are closed or opened through the rotation of the air door 18. When the air port at the bottom end of the first air duct is closed, the loop heat pipe loop cannot work; when the air port at the top end of the second air duct is closed, the natural air cooling loop cannot work. The air door 18 can be driven by a stepping motor to work, a temperature sensor is arranged at the charging module 17, and the stepping motor performs corresponding work according to data acquired by the temperature sensor.
The embodiment of the utility model provides an in, through the corresponding rotation of air door 18, the work of nimble control nature forced air cooling return circuit and loop heat pipe circuit, according to the heat dissipation demand of the module 17 that charges, nature forced air cooling return circuit and loop heat pipe circuit can work alone or work together.
The charging pile with multiple heat dissipation structures provided by the embodiment of the utility model has the advantages that the natural air cooling loop is combined with the loop heat pipe loop, forced convection cooling is carried out on a large-area in the charging pile by the natural air cooling loop according to the proportion of the opening degree of the flexible adjusting air door for the heat generation quantity of the charging module, when the charging module has local high temperature, the loop heat pipe loop carries out high-efficiency heat dissipation aiming at the high heat flow density area of the charging module, the occurrence of local hot spots is prevented, and the normal work of the charging module is ensured; satisfy electric automobile quick charge's while, still guarantee the heat production in the high-efficient effluence fills electric pile.
On the basis of the above embodiment, the natural air cooling circuit includes the air outlet channel 7 and the air inlet channel 5 that encloses and establish in the module 17 outside that charges, and the air outlet channel 7 is linked together with the air inlet channel 5, and the second wind channel is linked together with the air inlet channel 5.
It should be noted that the size of the second air duct is consistent with the size of the air inlet channel 5, the bottom end of the second air duct is connected with the top end of the air inlet channel 5, and the second air duct and the air inlet channel 5 can be integrally formed. The height of the cooling space constructed by the air inlet channel is designed according to requirements, and the height of the cooling space can be 1.6-1.8 m.
It can be understood that, in order to improve the heat dissipation efficiency of the natural air-cooling circuit, the air exhaust fan 6 is installed on the air outlet channel 7.
On the basis of the above embodiment, the loop heat pipe loop comprises a first heat exchanger 4, a vapor pipeline 1, a second heat exchanger 2 and a liquid pipeline 3 which are sequentially communicated end to end; the first heat exchanger 4 is disposed in a high heat flux density region of the charging module 17, and the first air duct is used to provide cool air to the second heat exchanger 2.
It should be noted that the first heat exchanger 4 may be an evaporator, and the second heat exchanger 2 may be a condenser.
The operation of the loop heat pipe loop is described in detail below. Firstly, working medium in the evaporator absorbs heat and evaporates, the refrigeration working medium in the steam refrigeration loop enters the condenser through the steam pipeline 1 under the action of pressure difference, the refrigeration working medium is condensed in the condenser, the liquid working medium condensed by the condenser enters the evaporator evaporation absorption charging module 17 and the heat of the air in the charging pile shell through the liquid pipeline 3 and evaporates and then flows back to the condenser, and cooling circulation is completed.
On the basis of the above embodiment, the second heat exchanger 2 is installed inside the first air duct.
It should be noted that the second heat exchanger 2 is installed inside the first air duct, and the first air duct provides cold air required for the second heat exchanger 2 during operation, and after the air inlet is closed, the cold air in the second heat exchanger 2 cannot be discharged, and at this time, the second heat exchanger 2 stops operating; or the second heat exchanger 2 is installed outside the first air duct, and after the air port is closed, cold air cannot enter the second heat exchanger 2, and at the moment, the second heat exchanger 2 cannot work.
It will be appreciated that the loop heat pipe 9 of the second heat exchanger 2 is a gravity loop heat pipe without a wick or a capillary-wick loop heat pipe.
On the basis of the above-described embodiment, the loop heat pipe loop includes a plurality of first heat exchangers 4 connected in parallel.
It should be noted that, in order to improve the heat dissipation efficiency, a plurality of first heat exchangers 4 connected in parallel may be installed in the chassis, and one first heat exchanger 4 is correspondingly disposed in each charging module 17.
On the basis of the above embodiment, as shown in fig. 4, the first heat exchanger 4 includes a top shell 13 and a bottom shell 12, the top shell 13 is disposed on the bottom shell 12, and an accommodating cavity is defined between the top shell 13 and the bottom shell 12; the capillary wick 11 is arranged in the accommodating cavity to divide the accommodating cavity into a pressure equalizing cavity 15 and a liquid storage cavity 14, and a vapor channel 16 communicated with the pressure equalizing cavity 15 is formed in the capillary wick 11.
It should be noted that the liquid working medium in the liquid storage chamber 14 absorbs heat and evaporates into a gaseous working medium, and the gaseous working medium is discharged out of the top shell 13 through the vapor channel, i.e., moves from the pressure equalizing chamber 15 to the inside of the second heat exchanger 2 through the vapor pipeline 1.
It will be appreciated that the wick 11 is made of copper powder sintered at 400 c. Wherein the top case 13 is detachably mounted on the bottom case 12.
As shown in fig. 1, the loop heat pipe loop is out of work, and the nature forced air cooling return circuit begins to operate in the embodiment of the utility model provides an, two wind gaps of the left and right sides in second wind channel are opened, and the wind gap in first wind channel is closed, and the air current direction is the top air supply, each spare part of cooling casing inside, and 6 discharges to the casing outside through air exhaust fan of air-out passageway 7 to in continuation cooling.
As shown in fig. 2, loop heat pipe loop work, and natural air cooling loop does not operate, in the embodiment of the utility model provides an, two wind gaps of the left and right sides in second wind channel are closed, and the wind gap in first wind channel is opened, and a plurality of evaporators through parallel connection cool off the high heat density region of charging module 17.
As shown in fig. 3, the loop heat pipe loop works, and the natural air cooling loop operates, in the embodiment of the present invention, two air ports on the left and right sides of the second air channel are opened, the air port of the first air channel is opened, air is supplied from the air inlet channel 5 on the upper portion of the casing, cools each part inside the casing, and is discharged to the outside of the casing through the air exhaust fan 6 of the air outlet channel 7; the evaporator is attached to the charging module 17, the working medium is vaporized in the evaporator to absorb heat, and the temperature in the charging module 17 and the shell is reduced.
It should be noted that the ratio of the opening degree of the damper 18 can control the intake air amount of the intake air channel and the heat exchange efficiency of the second heat exchanger.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a fill electric pile with multiple heat radiation structure which characterized in that includes: the air supply device comprises a first air channel and a second air channel sleeved outside the first air channel, and the bottom end of the first air channel is rotatably provided with an air door; the first air duct is used for providing cold air for the loop heat pipe loop, and the second air duct is used for providing cold air for the natural air cooling loop; the damper may close the first air passage or the second air passage.
2. The charging pile with various heat dissipation structures as claimed in claim 1, wherein the natural air cooling circuit comprises an air outlet channel and an air inlet channel surrounding the outside of the charging module, the air outlet channel is communicated with the air inlet channel, and the second air channel is communicated with the air inlet channel.
3. The charging pile with various heat dissipation structures as claimed in claim 2, wherein an exhaust fan is mounted on the air outlet channel.
4. The charging pile with multiple heat dissipation structures according to any one of claims 1 to 3, wherein the loop heat pipe loop comprises a first heat exchanger, a vapor pipeline, a second heat exchanger and a liquid pipeline which are sequentially communicated end to end; the first heat exchanger is arranged in a high heat flow density area of the charging module, and the first air duct is used for providing cold air for the second heat exchanger.
5. The charging post with multiple heat dissipation structures according to claim 4, wherein the second heat exchanger is installed inside the first air duct.
6. The charging pile with various heat dissipation structures as claimed in claim 5, wherein the loop heat pipe of the second heat exchanger is a gravity loop heat pipe without a capillary wick or a loop heat pipe with a capillary wick.
7. The charging post with multiple heat dissipation structures according to claim 4, wherein the loop heat pipe loop comprises a plurality of the first heat exchangers connected in parallel.
8. The charging pile with various heat dissipation structures as recited in claim 4, wherein the first heat exchanger comprises a top shell and a bottom shell, the top shell is arranged on the bottom shell, and a containing cavity is defined between the top shell and the bottom shell; the capillary core is arranged in the accommodating cavity to divide the accommodating cavity into a pressure equalizing cavity and a liquid storage cavity, and a steam channel communicated with the pressure equalizing cavity is formed in the capillary core.
9. The charging pile with various heat dissipation structures as claimed in claim 8, wherein the capillary wick is made of copper powder by sintering at 300-500 ℃.
10. The charging post with multiple heat dissipation structures as recited in claim 8, wherein the top shell is detachably mounted on the bottom shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021324930.XU CN212685290U (en) | 2020-07-08 | 2020-07-08 | Charging pile with various heat dissipation structures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021324930.XU CN212685290U (en) | 2020-07-08 | 2020-07-08 | Charging pile with various heat dissipation structures |
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| CN212685290U true CN212685290U (en) | 2021-03-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113119772A (en) * | 2021-03-31 | 2021-07-16 | 浙江大学 | Heat dissipation method and optimization system for 200kW high-power direct-current electric vehicle charging pile |
| CN113910945A (en) * | 2020-07-08 | 2022-01-11 | 中国科学院理化技术研究所 | Fill electric pile thermal management system |
-
2020
- 2020-07-08 CN CN202021324930.XU patent/CN212685290U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113910945A (en) * | 2020-07-08 | 2022-01-11 | 中国科学院理化技术研究所 | Fill electric pile thermal management system |
| CN113910945B (en) * | 2020-07-08 | 2024-12-13 | 中国科学院理化技术研究所 | Charging pile thermal management system |
| CN113119772A (en) * | 2021-03-31 | 2021-07-16 | 浙江大学 | Heat dissipation method and optimization system for 200kW high-power direct-current electric vehicle charging pile |
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