CN117183784A - Cooling system for new energy automobile charging station - Google Patents

Cooling system for new energy automobile charging station Download PDF

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Publication number
CN117183784A
CN117183784A CN202311121455.4A CN202311121455A CN117183784A CN 117183784 A CN117183784 A CN 117183784A CN 202311121455 A CN202311121455 A CN 202311121455A CN 117183784 A CN117183784 A CN 117183784A
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CN
China
Prior art keywords
liquid
cooling
pipeline
channel
storage tank
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Pending
Application number
CN202311121455.4A
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Chinese (zh)
Inventor
彭彪
夏前川
王洋
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Millimeter Electromechanical Suzhou Co ltd
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Millimeter Electromechanical Suzhou Co ltd
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Priority to CN202311121455.4A priority Critical patent/CN117183784A/en
Publication of CN117183784A publication Critical patent/CN117183784A/en
Pending legal-status Critical Current

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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
    • 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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  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The application provides a cooling system for a new energy vehicle charging station, comprising: the liquid outlet end of the first liquid extraction pump is connected with the first end of the first pipeline, the second end of the first pipeline is connected with the second pipeline and the third pipeline, and the second pipeline is used for being connected with the liquid inlet end of the power supply module; the heat exchanger comprises a first channel and a second channel, the first end of the first channel is connected with a third pipeline, and the second channel is used for being connected with a charging gun; and the first end of the cooling device is connected with the second end of the first channel of the heat exchanger through a fourth pipeline, and is connected with the liquid outlet end of the power supply module through a fourth pipeline, and the cooling device is connected with the first liquid pump through a fifth pipeline. According to the cooling system for the new energy automobile charging station, the cooling of the power supply module and the charging gun can be synchronously realized, and meanwhile, two cooling liquids are provided for respectively cooling the power supply module and the charging gun, so that the cost is low, and the cooling efficiency is high.

Description

Cooling system for new energy automobile charging station
Technical Field
The application relates to the field of new energy automobiles, in particular to a cooling system for a new energy automobile charging station.
Background
The new energy automobile charging station provides power to the rifle that charges through power module, charges the rifle to the new energy automobile in-process of charging through charging, can produce a large amount of heats, if not in time cool down, has the security risk.
The existing new energy automobile charging station generally adopts two sets of cooling systems to cool a power supply module and a charging gun respectively, so that the cost is high, and the two sets of systems are required to be maintained, which is troublesome.
Disclosure of Invention
The application aims to provide a cooling system for a new energy automobile charging station, which can synchronously realize cooling of a power supply module and a charging gun, and simultaneously provide two cooling liquids for respectively cooling the power supply module and the charging gun, so as to meet different cooling requirements of the power supply module and the charging gun.
In order to solve the above-mentioned problems, the present application provides a cooling system for a new energy vehicle charging station, the cooling system for a new energy vehicle charging station comprising:
the liquid outlet end of the first liquid extraction pump is connected with the first end of a first pipeline, the second end of the first pipeline is connected with a second pipeline and a third pipeline, the first pipeline can receive first cooling liquid from the first liquid extraction pump, the second pipeline and the third pipeline can both receive the first cooling liquid from the first pipeline, and the second pipeline is used for being connected with the liquid inlet end of a power supply module so as to provide the first cooling liquid for the power supply module;
the heat exchanger comprises a first channel and a second channel, the first channel can exchange heat with the second channel, the first end of the first channel is connected with the third pipeline, the first end of the second channel is used for being connected with a charging gun so as to receive second cooling liquid from the charging gun, and the second end of the second channel is used for providing the second cooling liquid to the charging gun;
the first end of the cooling device is connected with the second end of the first channel of the heat exchanger through a fourth pipeline, and is connected with the liquid outlet end of the power supply module through the fourth pipeline so as to receive the first cooling liquid from the power supply module and the heat exchanger and cool the first cooling liquid, the cooling device is connected with the first liquid pump through a fifth pipeline, and the first liquid pump can pump the first cooling liquid cooled by the cooling device.
Further, the cooling device includes:
a bottom plate;
the two micro-channel radiators comprise a group of flat pipes and two headers which are mutually communicated, the two headers of each micro-channel radiator are respectively arranged in the middle of two ends of the bottom plate in the length direction or the width direction, the headers of the two micro-channel radiators are arranged in a two-to-two mode, the two groups of flat pipes of the two micro-channel radiators are arranged around the outer edges of two sides of the bottom plate, one group of flat pipes in each micro-channel radiator comprises a plurality of flat pipes which are vertically arranged at intervals, two ends of each flat pipe are respectively connected with the two headers which are communicated with the flat pipes, the fifth pipeline is connected with two adjacent headers of the micro-channel radiators, and the fourth pipeline is connected with the other two adjacent headers;
the fans are arranged at the tops of the two micro-channel radiators and face the bottom plate so as to blow or suck the bottom plate.
Further, the cooling system further includes:
a first valve provided on the second pipe to close/open the second pipe;
and the second valve is arranged on the third pipeline to close/open the third pipeline.
Further, the cooling system further includes:
the first liquid storage tank is connected with the fifth pipeline through a sixth pipeline, the first liquid storage tank can contain first cooling liquid and supplement the first cooling liquid for the fifth pipeline, the first liquid storage tank is arranged on the bottom plate and faces the fan, and the first liquid storage tank is located in an area surrounded by the microchannel radiator.
Further, the cooling system further includes:
the liquid outlet end of the liquid supplementing pipe is connected with the fifth pipeline, and the first cooling liquid can be conveyed to the fifth pipeline through the liquid supplementing pipe.
Further, the cooling system further includes:
the liquid level sensor is arranged in the first liquid storage tank so as to detect the liquid level of the first cooling liquid;
the liquid supplementing pump is connected with the liquid supplementing pipe so as to supplement liquid to the liquid supplementing pipe;
and the first controller is connected with the liquid level sensor and the liquid supplementing pump, so that when the liquid level sensor detects that the liquid level of the first cooling liquid is lower than a preset liquid level, the liquid supplementing pump is started to supplement liquid to the fifth pipeline.
Further, the cooling system further includes:
the exhaust valve is connected with the top end of the first liquid storage tank so as to exhaust the gas in the first liquid storage tank;
the pressure release valve is connected to the top end of the first liquid storage tank and is adjacent to the exhaust valve, so that liquid is discharged when the pressure of the first cooling liquid in the first liquid storage tank is larger than a preset pressure.
Further, the cooling system further includes:
the second storage tank is used for containing second cooling liquid and is connected with the second end of the second channel of the heat exchanger;
the liquid extraction end of the second liquid extraction pump is connected with the second liquid storage tank so as to extract second cooling liquid in the second liquid storage tank, the liquid outlet end of the second liquid extraction pump is connected with a liquid supply connector, and the liquid supply connector is used for connecting the charging gun so as to provide the second cooling liquid for the charging gun.
Further, the cooling system further includes:
the second liquid extracting pump is connected with the second liquid storage tank through the filter, and the shell of the filter is made of a metal material;
and the semiconductor refrigerating sheet is arranged on the filter.
Further, the cooling system further includes:
the first liquid outlet temperature sensor is arranged on the first pipeline and used for detecting the first liquid outlet temperature of the first cooling liquid;
the second liquid outlet temperature sensor is connected with the liquid supply joint to detect the second liquid outlet temperature of the second cooling liquid;
the second controller is connected with the first liquid outlet temperature sensor, the second liquid outlet temperature sensor, the fan, the first liquid extracting pump, the second liquid extracting pump and the semiconductor refrigerating sheet, and is used for adjusting the fan and the first liquid extracting pump according to the difference between the first liquid outlet temperature and the first preset temperature and adjusting the second liquid extracting pump and the semiconductor refrigerating sheet according to the difference between the second liquid outlet temperature and the second preset temperature.
Due to the technical scheme, the application has the following beneficial effects:
according to the cooling system for the new energy automobile charging station, the first liquid pump is used for supplying the first cooling liquid cooled by the cooling device to the power supply module through the first pipeline and the second pipeline for cooling, the first cooling liquid flows into the first channel of the heat exchanger through the first pipeline and the third pipeline, the first cooling liquid in the first channel of the heat exchanger is used for transferring low temperature to the second cooling liquid in the second channel of the heat exchanger, so that the second cooling liquid is cooled, the charging gun can be cooled through the second cooling liquid, the first cooling liquid flows into the cooling device through the heat exchanger and the power supply module, the first cooling liquid is cooled through the cooling device, and the fifth cooling liquid is supplied to the first liquid pump through the fifth pipeline, so that the power supply module and the charging gun are cooled in a circulating mode, namely, the cooling system is used for synchronously cooling the power supply module and the charging gun, the cost is low, the two cooling liquids are simultaneously supplied for cooling the power supply module and the charging gun respectively, different cooling requirements of the power supply module and the charging gun are met, and the cooling efficiency is high.
Drawings
In order to more clearly illustrate the technical solution of the present application, the following description will make a brief introduction to the drawings used in the description of the embodiments or the prior art. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a block diagram of a cooling system for a new energy vehicle charging station in accordance with one embodiment of the present application;
FIG. 2 is a lower partial view of the cooling system for the new energy vehicle charging station of FIG. 1;
FIG. 3 is a block diagram of a cooling apparatus according to one embodiment of the present application with fans removed;
fig. 4 is a schematic diagram of a cooling system for a new energy vehicle charging station according to one embodiment of the application.
Reference numerals:
100. a first liquid pump; 211. a first pipeline; 212. a first liquid outlet temperature sensor; 221. a third pipeline; 222. a second valve; 231. a second pipeline; 232. a first valve; 240. a fourth pipeline; 250. a fifth pipeline; 300. a heat exchanger; 310. a first channel; 320. a second channel; 410. a power supply module; 420. a charging gun; 500. a cooling device; 510. a microchannel heat sink; 511. a header; 512. a flat tube; 520. a blower; 530. a bottom plate; 610. a first liquid storage tank; 620. an exhaust valve; 630. a pressure release valve; 640. a sixth pipeline; 650. a liquid level sensor; 710. a fluid supplementing pipe; 720. a fluid supplementing valve; 730. a fluid supplementing pump; 810. a second liquid storage tank; 821. a filter; 822. a semiconductor refrigeration sheet; 830. a second liquid pump; 841. a liquid supply joint; 842. and a second liquid outlet temperature sensor.
Description of the embodiments
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
Next, a cooling system for a charging station for a new energy vehicle according to an embodiment of the present application is described.
As shown in fig. 1 to 4, a cooling system for a new energy vehicle charging station according to an embodiment of the present application includes: first pump 100, heat exchanger 300, and cooling device 500.
First, the first pump 100 is explained. The liquid outlet end of the first liquid pump 100 is connected to the first end of the first pipeline 211, the second end of the first pipeline 211 is connected to the second pipeline 231 and the third pipeline 221, the first pipeline 211 can receive the first cooling liquid from the first liquid pump 100, the second pipeline 231 and the third pipeline 221 can both receive the first cooling liquid from the first pipeline 211, and the second pipeline 231 is used for being connected to the liquid inlet end of the power supply module 410 so as to provide the first cooling liquid for the power supply module 410, thereby cooling the power supply module 410.
That is, the first liquid pump 100 can pump the first cooling liquid to be supplied to the first pipe 211, the first cooling liquid flows to the second pipe 231 and the second pipe 231 through the first pipe 211, and the first cooling liquid flows to the power supply module 410 through the third pipe 221, so that the power supply module 410 can be cooled.
Next, the heat exchanger 300 is described. The heat exchanger 300 includes a first channel 310 and a second channel 320, the first channel 310 is capable of exchanging heat with the second channel 320, a first end of the first channel 310 is connected to the third pipe 221, a first end of the second channel 320 is used for being connected to the charging gun 420 to receive the second cooling liquid from the charging gun 420, and a second end thereof is used for providing the second cooling liquid to the charging gun 420.
The first channel 310 accommodates a first cooling liquid, the second channel 320 accommodates a second cooling liquid, and the first channel 310 can exchange heat with the second channel 320, i.e. the low temperature of the first cooling liquid can be transferred to the second cooling liquid, so as to cool the second cooling liquid. The first end of the second channel 320 is used for connecting with the liquid outlet end of the charging gun, and the second end (of the second channel 320) is used for connecting with the liquid inlet end of the charging gun, so that the charging gun 420 is cooled by the second cooling liquid. The first cooling liquid may be an aqueous glycol solution, and the second cooling liquid may be silicone oil, so that the power supply module and the charging gun 420 can be cooled in a targeted manner.
Finally, the cooling device 500 is explained. The first end of the cooling device 500 is connected to the second end of the first channel 310 of the heat exchanger 300 through the fourth pipeline 240, and is connected to the liquid outlet end of the power supply module 410 through the fourth pipeline 240, so as to receive the first cooling liquid from the power supply module 410 and the heat exchanger 300 and cool the first cooling liquid, the cooling device 500 is connected to the first liquid pump 100 through the fifth pipeline 250, and the first liquid pump 100 can pump the first cooling liquid cooled by the cooling device 500.
The first end of the fourth pipe 240 is connected to the second end of the first passage 310 of the heat exchanger 300, and the heat-exchanged first cooling liquid flows into the fourth pipe 240. The first end of the fourth pipeline 240 is connected to the liquid outlet end of the power supply module 410, and the first cooling liquid after cooling the power supply module 410 flows into the fourth pipeline 240. The second end of the fourth pipeline 240 is connected to the cooling device 500, the first cooling liquid from the fourth pipeline 240 is cooled by the cooling device 500, and the cooled first cooling liquid is conveyed to the first liquid pump 100 through the fifth pipeline 250, so that the first liquid pump 100 pumps the first cooling liquid to the first pipeline 211, and the circulating cooling of the charging gun 420 and the power supply module 410 is realized.
In the above cooling system for a new energy vehicle charging station, the first liquid pump 100 provides the first cooling liquid cooled by the cooling device 500 to the power supply module 410 through the first pipeline 211 and the second pipeline 231 for cooling, and flows the first cooling liquid into the first channel 310 of the heat exchanger 300 through the first pipeline 211 and the third pipeline 221, the first cooling liquid in the first channel 310 of the heat exchanger 300 transfers low temperature to the second cooling liquid in the second channel 320 of the heat exchanger 300, thereby cooling the second cooling liquid, so that the charging gun 420 can be cooled by the second cooling liquid, the first cooling liquid passing through the heat exchanger 300 and the power supply module 410 flows into the cooling device 500 through the fourth pipeline 240, the first cooling liquid is cooled by the cooling device 500, and then is provided to the first liquid pump 100 through the fifth pipeline 250, thereby realizing the circulating cooling of the power supply module 410 and the charging gun 420, that is realized to cool the power supply module 410 and the charging gun 420 synchronously, and the charging gun 420 are low in cost, and low in maintenance cost, and simultaneously, the two cooling liquids are provided to respectively satisfy the requirements of the power supply module and the charging gun 420 and the charging gun.
Further, the cooling device 500 includes a base 530, two microchannel heat sinks 510, and a fan 520. Each microchannel radiator 510 includes a group of flat tubes 512 and two headers 511 that are in communication with each other, the two headers 511 of each microchannel radiator 510 are respectively disposed in the middle of both ends in the length direction or the width direction of the bottom plate 530, the headers 511 of the two microchannel radiators 510 are disposed two by two, and the two groups of flat tubes 512 of the two microchannel radiators 510 are disposed around the outer edges of both sides of the bottom plate 530, both ends of the plurality of flat tubes 512 in the group of flat tubes 512 in each microchannel radiator 510 are respectively connected to the two headers 511 in a vertically spaced manner (the group of flat tubes 512 includes a plurality of flat tubes 512 disposed in a vertically spaced manner, and both ends of each of the flat tubes 512 are respectively connected to the headers 511 in communication therewith), the fifth pipeline 250 is connected to two of the adjacent headers 511 (the fifth pipeline 250 is connected to the cooling device 500 through two of the adjacent headers 511), and the fourth pipeline 240 is connected to the other two adjacent headers 511 (the fourth pipeline 240 is connected to the cooling device 500 through the other two adjacent headers 511). A blower 520 is disposed on top of the two microchannel heat sinks 510 and faces the base plate 530 to blow or suck air to the base plate 530.
As shown in fig. 1 and 3, the first cooling liquid passing through the heat exchanger 300 and the power supply module 410 flows to two adjacent headers 511 of the two microchannel radiators 510 through the fourth pipe 240, enters the two sets of flat tubes 512 of the two microchannel radiators 510 from the two adjacent headers 511, then flows into the other two adjacent headers 511, and finally flows into the fifth pipe 250 from the other two headers 511. The cooling efficiency of the micro-channel heat sink 510 is high, and the two groups of flat tubes 512 surround the outer edges of both sides of the bottom plate 530, increasing the heat exchange area, thereby increasing the heat exchange efficiency.
The blower 520 is disposed at the top of the two micro-channel heat sinks 510 to blow or suck air against the bottom plate 530, thereby forming strong convection and forcing air to rapidly pass through the micro-channel heat sinks 510, thereby realizing rapid cooling of the micro-channel heat sinks 510. The cooling device 500 with the structure occupies a smaller space, the flat tube 512 is longer, the cooling area is larger, the heat exchange efficiency is high, the bottom plate 530, the two micro-channel radiators 510 and the fan 520 can enclose a relatively smaller ventilation space, and the single fan 520 can fully cool the two micro-channel radiators 510. In addition, in the use process, even if one micro-channel radiator 510 is damaged, the use of the other micro-channel radiator 510 is not affected, the cooling of the first cooling liquid can be realized, and the cooling stability is improved.
In some embodiments of the present application, the cooling system further includes a first valve 232 and a second valve 222. A first valve 232 is provided on the second pipe 231 to close/open the second pipe 231. The second valve 222 is provided on the third pipe 221 to close/open the third pipe 221.
As shown in fig. 4, the second pipe 231 may be closed by the first valve 232, so that the charging gun 420 can be cooled alone. The third line 221 may also be closed by the second valve 222, so that the power supply module 410 can be cooled separately. Thus, the user can conveniently perform selective cooling of the power supply module 410 and the charging gun 420.
In some embodiments of the present application, the cooling system further includes a first liquid storage tank 610, the first liquid storage tank 610 is connected to the fifth pipeline 250 through a sixth pipeline 640, the first liquid storage tank 610 can hold a first cooling liquid and can supplement the fifth pipeline 250 with the first cooling liquid, the first liquid storage tank 610 is disposed on the bottom plate 530 and faces the fan 520, and the first liquid storage tank 610 is located in an area surrounded by the micro-channel radiator 510.
As shown in fig. 3, when the first cooling liquid in the fifth pipeline 250 is insufficient, air exists in the fifth pipeline 250, the first cooling liquid in the first liquid storage tank 610 may be injected into the fifth pipeline 250 through the sixth pipeline 640 due to gravity (the water is heavier than the air, the position of the first liquid storage tank 610 is higher than the connection position of the sixth pipeline 640 and the fifth pipeline 250), or due to the suction force of the first liquid pump 100, the timely liquid supplementing of the fifth pipeline 250 is realized, the reduction of the cooling effect due to the insufficient first cooling liquid in the fifth pipeline 250 is avoided, or an air bag capable of being compressed/expanded is arranged at the bottom end (far from the end connected with the sixth pipeline) inside the first liquid storage tank 610, and if the air exists in the fifth pipeline, the air bag can be expanded to push the first cooling liquid into the fifth pipeline 250 through the sixth pipeline 640. Compared with the way that the two ends of the first liquid storage tank 610 are directly communicated with the fifth pipeline 250 (the first cooling liquid must pass through the first liquid storage tank 610), the liquid supplementing way of the application can rapidly provide the first cooling liquid cooled by the cooling device 500 to the power supply module and the charging gun 420, so that the first cooling liquid is prevented from being detained in the first liquid storage tank 610, and the temperature of the first cooling liquid is also easy to rise in the detention process.
Moreover, the first liquid storage tank 610 is disposed in the area surrounded by the micro-channel radiator 510 and faces the fan 520, and the fan 520 can cool the first liquid storage tank 610, so as to avoid the situation that the temperature of the first cooling liquid in the first liquid storage tank 610 is raised, which results in the too high temperature of the first cooling liquid injected into the fifth pipeline 250 to affect the cooling of the heat exchanger 300 and the power supply module 410.
Further, the cooling system further includes a fluid-filling pipe 710, a liquid outlet end of the fluid-filling pipe 710 is connected to the fifth pipeline 250, and the first cooling liquid can be delivered to the fifth pipeline 250 through the fluid-filling pipe 710.
As shown in fig. 3, by supplying the first coolant to the fluid replacement pipe 710, the first coolant overflows into the first reservoir tank 610 after filling the fifth pipe 250, and the first reservoir tank 610 is replaced. During the operation of the cooling system, the first cooling liquid can be preferentially replenished to the fifth pipeline 250, so that enough first cooling liquid in the pipelines (the first pipeline 211, the second pipeline 231, the third pipeline 221, the fourth pipeline 240 and the fifth pipeline 250 which are mutually communicated) is ensured to the greatest extent, and the influence on the cooling of the charging gun 420 and the power supply module 410 due to the shortage of the first cooling liquid is avoided.
Alternatively, as shown in fig. 4, a fluid replacement valve 720 is provided in the fluid replacement pipe 710, and the closing/opening of the fluid replacement pipe 710 is controlled by the fluid replacement valve 720.
Further, the cooling system also includes a level sensor 650, a make-up pump 730, and a first controller. A level sensor 650 is disposed within the first liquid reservoir 610 to detect the level of the first cooling liquid. The fluid replacement pump 730 is connected to the fluid replacement pipe 710 to replace the fluid replacement pipe 710. The first controller is connected to the liquid level sensor 650 and the fluid replacement pump 730 to start the fluid replacement pump 730 to replace the fifth line 250 and the first fluid reservoir 610 when the liquid level sensor 650 detects that the level of the first cooling fluid is below the predetermined level. The first controller may be a single-chip microcomputer or a programmable logic controller.
As shown in fig. 4, when the liquid level sensor 650 detects that the liquid level of the first cooling liquid in the first liquid storage tank 610 is lower than the predetermined liquid level, which indicates that the liquid level of the first cooling liquid in the first liquid storage tank 610 is too low, at this time, the first controller starts the liquid-filling pump 730, and the liquid-filling pump 730 pumps the first cooling liquid from the outside into the fifth pipeline 250 through the liquid-filling pipe 710, so as to fill the fifth pipeline 250 with the liquid, and overflows into the first liquid storage tank 610 after the fifth pipeline 250 is filled with the first cooling liquid, thereby realizing the liquid-filling of the fifth pipeline 250 and the first liquid storage tank 610.
In some embodiments of the present application, the cooling system further includes an exhaust valve 620 and a pressure relief valve 630. The exhaust valve 620 is connected to the top end of the first liquid storage tank 610 to exhaust the gas in the liquid storage tank. A pressure release valve 630 is connected to the top end of the first reservoir 610 (adjacent to its end connected to the sixth line) and adjacent to the vent valve 620 to drain when the pressure of the first coolant in the first reservoir 610 is greater than a predetermined pressure.
When air exists in the first liquid storage tank, the air can be discharged through the exhaust valve 620, so that the air is prevented from occupying the space in the first liquid storage tank, and the first liquid storage tank 610 is prevented from bursting due to expansion of the air in the first liquid storage tank, and the safety is improved.
When the first cooling liquid in the first liquid storage tank 610 is too much, the first liquid can be discharged through the pressure release valve 630, so that the first liquid outlet tank is prevented from bursting due to the too high pressure of the first cooling liquid in the first liquid outlet tank, and the safety is improved.
In some embodiments of the present application, the cooling system further includes a second liquid storage tank 810 and a second liquid extraction pump 830. The second tank is used for containing a second cooling liquid, and the second liquid storage tank 810 is connected to the second end of the second channel 320 of the heat exchanger 300. The liquid extraction end of the second liquid extraction pump 830 is connected with the second liquid storage tank 810 to extract the second cooling liquid in the second liquid storage tank 810, the liquid outlet end of the second liquid extraction pump 830 is connected with the liquid supply joint 841, and the liquid supply joint 841 is used for connecting the charging gun 420 to provide the second cooling liquid for the charging gun 420.
As shown in fig. 2 and 4, the second liquid storage tank 810 can store more second cooling liquid, and since the charging gun 420 is often moved during the use of the charging gun 420, leakage of the second cooling liquid may occur during the use of the charging gun 420, the second liquid storage tank 810 can provide sufficient second cooling liquid to cool the charging gun 420, so as to avoid shortage of the second cooling liquid supplied to the charger 420.
The second liquid pump 830 supplies the second cooling liquid in the second liquid storage tank 810 to the charging gun 420 through the liquid supply connector 841, so that the flow rate of the second cooling liquid can be increased, the heat exchange efficiency can be increased, and the liquid supply connector 841 can be connected with a plurality of charging guns 420.
Further, the cooling system also includes a filter 821 and a semiconductor cooling plate 822. The second liquid pump 830 is connected to the second liquid storage tank 810 through a filter 821, and the material of the housing of the filter 821 is a metal material. A semiconductor refrigeration sheet 822 is disposed on the filter 821.
As shown in fig. 4, the second cooling liquid is filtered through the filter 821, so that impurities and contaminants in the second cooling liquid can be filtered out, and the blockage of the flow passage of the second cooling liquid and the damage of the charging gun 420 caused by the impurities and contaminants can be avoided.
The semiconductor cooling fin 822 can cool the metal housing of the filter 821, thereby cooling the second cooling liquid in the metal housing. The semiconductor refrigeration piece 822 has higher cooling efficiency, low power consumption and convenient installation, and can further cool the second cooling liquid on the basis of cooling the second cooling liquid by the heat exchanger 300, so that the cooling efficiency of the second cooling liquid is improved.
Further, the cooling system also includes a first outlet temperature sensor 212, a second outlet temperature sensor 842, and a second controller. The first outlet temperature sensor is disposed on the first pipeline 211 to detect a first outlet temperature of the first cooling liquid. The second outlet temperature sensor 842 is connected to the liquid supply connector 841 to detect the second outlet temperature of the second cooling liquid. The second controller is connected to the first liquid outlet temperature sensor 212, the second liquid outlet temperature sensor 842, the fan 520, the first liquid pump 100, the second liquid pump 830 and the semiconductor refrigeration piece 822, adjusts the fan 520 and the first liquid pump 100 according to the difference between the first liquid outlet temperature and the first preset temperature, and adjusts the second liquid pump 830 and the semiconductor refrigeration piece 822 according to the difference between the second liquid outlet temperature and the second preset temperature. The first liquid outlet temperature is preferably adjusted when the first liquid outlet temperature is higher than the first preset temperature and the second liquid outlet temperature is higher than the second preset temperature, so that the first liquid outlet temperature is stabilized at the first preset temperature, and then the second liquid outlet temperature is adjusted. The cooling efficiency of the charging gun 420 and the power supply module 410 is increased.
For example, when the first outlet temperature is higher than the first predetermined temperature, the second controller increases the rotation speed of the fan 520 and increases the rotation speed of the first pump 100, and decreases the temperature of the first cooling liquid, so that the first outlet temperature is maintained at the first predetermined temperature. At this time, if the second liquid outlet temperature is higher than the second predetermined temperature, the second controller increases the rotation speed of the second liquid drawing pump 830 and increases the cooling power of the semiconductor cooling fin 822, so that the second liquid outlet temperature is maintained at the second predetermined temperature. The first preset temperature can be lower than the second preset temperature, so that the first channel can be guaranteed to cool the second channel. Thus, the first liquid outlet temperature and the second liquid outlet temperature can be efficiently adjusted, and cooling of the charging gun 420 and the power supply module 410 can be sufficiently ensured.
The foregoing is only illustrative of the present application and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present application.

Claims (10)

1. A cooling system for a new energy vehicle charging station, the new energy vehicle charging station including a power module and a charging gun, the cooling system comprising:
the liquid outlet end of the first liquid extraction pump is connected with the first end of a first pipeline, the second end of the first pipeline is connected with a second pipeline and a third pipeline, the first pipeline can receive first cooling liquid from the first liquid extraction pump, the second pipeline and the third pipeline can both receive the first cooling liquid from the first pipeline, and the second pipeline is used for being connected with the liquid inlet end of a power supply module so as to provide the first cooling liquid for the power supply module;
the heat exchanger comprises a first channel and a second channel, the first channel can exchange heat with the second channel, the first end of the first channel is connected with the third pipeline, the first end of the second channel is used for being connected with a charging gun so as to receive second cooling liquid from the charging gun, and the second end of the second channel is used for providing the second cooling liquid to the charging gun;
the first end of the cooling device is connected with the second end of the first channel of the heat exchanger through a fourth pipeline, and is connected with the liquid outlet end of the power supply module through the fourth pipeline so as to receive the first cooling liquid from the power supply module and the heat exchanger and cool the first cooling liquid, the cooling device is connected with the first liquid extracting pump through a fifth pipeline, the first liquid extracting pump can extract the first cooling liquid cooled by the cooling device,
wherein the cooling device comprises:
a bottom plate;
the two micro-channel radiators comprise a group of flat pipes and two headers which are mutually communicated, the two headers of each micro-channel radiator are respectively arranged in the middle of two ends of the bottom plate in the length direction or the width direction, the headers of the two micro-channel radiators are arranged in a two-to-two mode, the two groups of flat pipes of the two micro-channel radiators are arranged around the outer edges of two sides of the bottom plate, one group of flat pipes in each micro-channel radiator comprises a plurality of flat pipes which are vertically arranged at intervals, two ends of each flat pipe are respectively connected with the two headers which are communicated with the flat pipes, the fifth pipeline is connected with two adjacent headers of the micro-channel radiators, and the fourth pipeline is connected with the other two adjacent headers;
the fans are arranged at the tops of the two micro-channel radiators and face the bottom plate so as to blow or suck the bottom plate.
2. The cooling system for a new energy vehicle charging station of claim 1, further comprising:
a first valve provided on the second pipe to close/open the second pipe;
and the second valve is arranged on the third pipeline to close/open the third pipeline.
3. The cooling system for a new energy vehicle charging station of claim 1, wherein the first cooling fluid is a glycol solution and the second cooling fluid is silicone oil.
4. The cooling system for a new energy vehicle charging station of claim 1, further comprising:
the first liquid storage tank is connected with the fifth pipeline through a sixth pipeline, the first liquid storage tank can contain first cooling liquid and supplement the first cooling liquid for the fifth pipeline, the first liquid storage tank is arranged on the bottom plate and faces the fan, and the first liquid storage tank is located in an area surrounded by the microchannel radiator.
5. The cooling system for a new energy vehicle charging station of claim 4, further comprising:
the liquid outlet end of the liquid supplementing pipe is connected with the fifth pipeline, and the first cooling liquid can be conveyed to the fifth pipeline through the liquid supplementing pipe.
6. The cooling system for a new energy vehicle charging station of claim 5, further comprising:
the liquid level sensor is arranged in the first liquid storage tank so as to detect the liquid level of the first cooling liquid;
the liquid supplementing pump is connected with the liquid supplementing pipe so as to supplement liquid to the liquid supplementing pipe;
and the first controller is connected with the liquid level sensor and the liquid supplementing pump, so that when the liquid level sensor detects that the liquid level of the first cooling liquid is lower than a preset liquid level, the liquid supplementing pump is started to supplement liquid to the fifth pipeline.
7. The cooling system for a new energy vehicle charging station of claim 4, further comprising:
the exhaust valve is connected with the top end of the first liquid storage tank so as to exhaust the gas in the first liquid storage tank;
the pressure release valve is connected to the top end of the first liquid storage tank and is adjacent to the exhaust valve, so that liquid is discharged when the pressure of the first cooling liquid in the first liquid storage tank is larger than a preset pressure.
8. The cooling system for a new energy vehicle charging station of claim 1, further comprising:
the second storage tank is used for containing second cooling liquid and is connected with the second end of the second channel of the heat exchanger;
the liquid extraction end of the second liquid extraction pump is connected with the second liquid storage tank so as to extract second cooling liquid in the second liquid storage tank, the liquid outlet end of the second liquid extraction pump is connected with a liquid supply connector, and the liquid supply connector is used for connecting the charging gun so as to provide the second cooling liquid for the charging gun.
9. The cooling system for a new energy vehicle charging station of claim 8, further comprising:
the second liquid extracting pump is connected with the second liquid storage tank through the filter, and the shell of the filter is made of a metal material;
and the semiconductor refrigerating sheet is arranged on the filter.
10. The cooling system for a new energy vehicle charging station of claim 9, further comprising:
the first liquid outlet temperature sensor is arranged on the first pipeline and used for detecting the first liquid outlet temperature of the first cooling liquid;
the second liquid outlet temperature sensor is connected with the liquid supply joint to detect the second liquid outlet temperature of the second cooling liquid;
the second controller is connected with the first liquid outlet temperature sensor, the second liquid outlet temperature sensor, the fan, the first liquid extracting pump, the second liquid extracting pump and the semiconductor refrigerating sheet, and is used for adjusting the fan and the first liquid extracting pump according to the difference between the first liquid outlet temperature and the first preset temperature and adjusting the second liquid extracting pump and the semiconductor refrigerating sheet according to the difference between the second liquid outlet temperature and the second preset temperature.
CN202311121455.4A 2023-09-01 2023-09-01 Cooling system for new energy automobile charging station Pending CN117183784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311121455.4A CN117183784A (en) 2023-09-01 2023-09-01 Cooling system for new energy automobile charging station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311121455.4A CN117183784A (en) 2023-09-01 2023-09-01 Cooling system for new energy automobile charging station

Publications (1)

Publication Number Publication Date
CN117183784A true CN117183784A (en) 2023-12-08

Family

ID=88987961

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311121455.4A Pending CN117183784A (en) 2023-09-01 2023-09-01 Cooling system for new energy automobile charging station

Country Status (1)

Country Link
CN (1) CN117183784A (en)

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