CN112930095B - Charging station temperature regulation and control system and regulation and control method - Google Patents
Charging station temperature regulation and control system and regulation and control method Download PDFInfo
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- CN112930095B CN112930095B CN202110259486.0A CN202110259486A CN112930095B CN 112930095 B CN112930095 B CN 112930095B CN 202110259486 A CN202110259486 A CN 202110259486A CN 112930095 B CN112930095 B CN 112930095B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20272—Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
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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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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20172—Fan mounting or fan specifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20263—Heat dissipaters releasing heat from coolant
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20281—Thermal management, e.g. liquid flow control
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20372—Cryogenic cooling; Nitrogen liquid cooling
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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
The invention is suitable for the technical field of thermal management systems, and provides a charging station temperature regulation and control system and a regulation and control method, wherein the system comprises a cold accumulation subsystem, a cooling subsystem, a controller and a first heat exchanger; the cooling subsystem is including the first water pump, the third solenoid valve that connect gradually, the charging station, still include first fan, and be used for detecting the first temperature-detecting device of charging station current temperature value, when first temperature-detecting device detects that charging station current temperature value is greater than or equal to first preset threshold value, first solenoid valve, the second solenoid valve is controlled to the controller, third solenoid valve and first water pump are opened, so that the cooling subsystem absorbs the thermal fluid medium entering heat source entry of heat exchanger of charging station, the fluid medium entering cold source entry of cold energy of cold accumulation subsystem release cold energy. The invention can further cool the charging station and avoid the defect of overheating fault of the charging station.
Description
Technical Field
The invention belongs to the field of thermal management systems, and particularly relates to a charging station temperature regulation and control system and a regulation and control method.
Background
With the rapid development of the new energy automobile industry, the charging of the electric automobile, especially the rapid charging, becomes an urgent problem to be solved. Along with the increase of the capacity of the battery pack and the improvement of the charging rate, the requirement on the power of the charging pile is also increased rapidly. At present, the research and development on the fast charging and super fast charging technology of the electric vehicle are vigorous, and the domestic standard system related to the fast charging system is gradually perfected so as to promote the landing of the fast charging technology. Specifically, the definition of the dc high-power charging technology for the electric passenger vehicle by the chinese power enterprise association is as follows: the charging power is higher than 350kW, the power battery is supplied in a single gun mode to charge, and 80-90% of electricity is fully charged in 10-15 minutes. For quick charging (or super quick charging), if the heat loss of a charging pile is calculated according to 5%, the heat productivity of a single charging pile is over 17.5 kW. High calorific capacity can cause and fill interior components and parts of electric pile and pencil performance decline, and quick ageing even causes the potential safety hazard. Therefore, it is necessary to research a cooling technology of a charging pile or a charging station with high efficiency and energy saving.
At the present stage, charging pile cooling is divided into natural air cooling, forced air cooling and air conditioning (compression refrigeration) systems. The air cooling technology is highly dependent on the environment temperature, and when the environment temperature is high, the air cooling technology cannot provide enough cold for the charging pile. Especially to the electric pile that fills fast of high-power direct current, the cooling effect is far away not enough. Adopt air conditioning system to fill electric pile and cool off, owing to increased compression refrigerating plant, the cooling effect is superior to the forced air cooling. However, the air conditioning system has a complex equipment structure and high cost, and is not suitable for popularization and implementation. Considering that air cooling equipment is simple and reliable, small in size and low in cost, most charging piles are cooled by an air cooling technology at the present stage, but the defect that the air cooling technology is highly limited by the ambient temperature becomes one of important factors causing performance reduction and rapid aging of devices in the charging piles. Therefore, it is necessary to find a new cooling technology with high efficiency and energy saving to compensate the defects of the air cooling technology.
Disclosure of Invention
The invention provides a charging station temperature regulating system and a regulating method, which aim to solve the problem that a charging station is overheated to generate faults and even to generate safety accidents when the cooling capacity of an air cooling technology is not enough to effectively cool the charging station.
The invention is realized in such a way, on one hand, the invention provides a temperature regulation and control system of a charging station, which comprises a cold accumulation subsystem, a cooling subsystem, a controller and a first heat exchanger arranged between the cold accumulation subsystem and the cooling subsystem for heat exchange, wherein the cold accumulation subsystem and a cold source inlet of the first heat exchanger are switched on and off through a first electromagnetic valve, and the cooling subsystem and a heat source inlet of the first heat exchanger are switched on and off through a second electromagnetic valve; the cooling subsystem comprises a first water pump, a third electromagnetic valve, a charging station, a first fan and a first temperature detection device, wherein the first water pump, the third electromagnetic valve and the charging station are sequentially connected, the first fan is arranged on the charging station, the first temperature detection device is used for detecting the current temperature value of the charging station, the controller is respectively electrically connected with the first water pump, the first electromagnetic valve, the second electromagnetic valve and the first temperature detection device, when the first temperature detection device detects that the current temperature value of the charging station is greater than or equal to a first preset threshold value, the controller controls the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the first water pump to be opened, so that the cooling subsystem absorbs fluid media of heat of the charging station to enter a heat source inlet of the heat exchanger, and fluid media of cold energy released by the cold storage subsystem to enter a cold source inlet of the first heat exchanger.
Preferably, when the first temperature detection device detects that the current temperature value of the charging station is smaller than a first preset threshold value, the controller controls the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the first water pump to be closed, so that the cooling subsystem is in an air cooling mode.
Preferably, the cold-storage subsystem is including cold-storage tank, second water pump, fourth solenoid valve and the heat abstractor that connects gradually, still including being used for detecting the second temperature detection device of heat abstractor current temperature value, the controller respectively with second water pump, fourth solenoid valve and second temperature detection device electricity are connected, work as when second temperature detection device detects that current temperature value is less than or equal to the second and predetermines the threshold value, controller control fourth solenoid valve and second water pump are opened, and control first solenoid valve is closed, so that the fluid medium of second water pump flows through the cold-storage tank absorbs the heat of cold-storage tank, and pass through heat abstractor arranges the heat to the external world, the second predetermines the threshold value and is less than the first threshold value of predetermineeing.
Preferably, when the second temperature detection device detects that the current temperature value of the heat dissipation device is greater than a second preset threshold and smaller than the first preset threshold, the controller controls the first electromagnetic valve, the fourth electromagnetic valve and the second water pump to be closed, so that the cold storage subsystem is in a sleep mode.
Preferably, the heat dissipation device comprises a heat exchanger connected with the fourth electromagnetic valve, and a second fan arranged at a heat dissipation opening of the heat exchanger.
Preferably, the cold storage tank is a second heat exchanger with a phase change material arranged therein, and the type of the second heat exchanger is a shell-and-tube type, a ribbed plate type, a pin-fin tube type or a finned tube type.
Preferably, the charging station comprises at least one charging unit, each charging unit is connected with a third electromagnetic valve, a first fan and a first temperature detection device, and the processor can control the charging units individually or collectively.
Preferably, the cold accumulation subsystem and the cooling subsystem both comprise fluid medium replenishing tanks for replenishing the fluid medium inside the cold accumulation subsystem or the cooling subsystem.
Preferably, the first heat exchanger is of the plate type.
In another aspect, a regulation and control method of the charging station temperature regulation and control system is provided, where the method includes:
when the current temperature value of the charging station is detected to be larger than or equal to a first preset threshold value, controlling a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a first water pump to be opened so that a fluid medium of which the cooling subsystem absorbs heat of the charging station enters a heat source inlet of a heat exchanger, and a fluid medium of which the cold storage subsystem releases cold energy enters a cold source inlet of a first heat exchanger;
when the current temperature value of the heat dissipation device is detected to be smaller than or equal to a second preset threshold value, the fourth electromagnetic valve and the second water pump are controlled to be opened, and the first electromagnetic valve is controlled to be closed, so that the fluid medium of the second water pump flows through the cold storage box to absorb heat of the cold storage box, and the heat is discharged to the outside through the heat dissipation device.
Compared with the prior art, the embodiment of the application mainly has the following beneficial effects:
the charging station temperature regulation system comprises a cold accumulation subsystem, a cooling subsystem, a controller and a first heat exchanger which is arranged between the cold accumulation subsystem and the cooling subsystem and is used for exchanging heat, wherein the cold accumulation subsystem and a cold source inlet of the first heat exchanger are connected and disconnected through a first electromagnetic valve, and the cooling subsystem and a heat source inlet of the first heat exchanger are connected and disconnected through a second electromagnetic valve; the cooling subsystem comprises a first water pump, a third electromagnetic valve, a charging station, a first fan and a first temperature detection device, wherein the first water pump, the third electromagnetic valve and the charging station are sequentially connected, the first fan is arranged on the charging station, the first temperature detection device is used for detecting the current temperature value of the charging station, the controller is respectively electrically connected with the first water pump, the first electromagnetic valve, the second electromagnetic valve and the first temperature detection device, when the first temperature detection device detects that the current temperature value of the charging station is larger than or equal to a first preset threshold value, the controller controls the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the first water pump to be opened so that fluid media absorbing heat of the charging station in the cooling subsystem enter a heat source inlet of the heat exchanger, and fluid media releasing cold energy in the cold accumulation subsystem enter a cold source inlet of the first heat exchanger. According to the invention, heat exchange is completed in the first heat exchanger through two paths of fluid media respectively carrying heat and cold energy, so that the charging station is further cooled, and the phenomenon that the charging station is overheated and breaks down or even has a safety accident due to insufficient cooling capacity of the first fan to effectively cool the charging station is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a charging station temperature control system according to the present invention;
fig. 2 is another schematic structural diagram of a charging station temperature control system according to the present invention;
FIG. 3 is another schematic structural diagram of a charging station temperature regulation system according to the present invention;
fig. 4 is a schematic flow chart of a regulating method of a charging station temperature regulating system according to the present invention.
Reference numerals: 1. a first heat exchanger; 2. a first solenoid valve; 3. a second solenoid valve; 4. a first water pump; 5. a third solenoid valve; 6. a charging station; 7. a first fan; 8. a first temperature detection device; 9. a cold storage tank; 10. a second water pump; 11. a fourth solenoid valve; 12. a heat sink; 121. a heat exchanger; 122. a second fan; 13. a second temperature detection device; 14. the fluid medium replenishes the tank.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof in the description and claims of this application and the description of the figures above, are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
On one hand, the embodiment of the invention provides a temperature regulation and control system for a charging station, which comprises a cold accumulation subsystem, a cooling subsystem, a controller and a first heat exchanger 1 arranged between the cold accumulation subsystem and the cooling subsystem for heat exchange, wherein the cold accumulation subsystem and a cold source inlet of the first heat exchanger 1 are switched on and off through a first electromagnetic valve 2, and the cooling subsystem and a heat source inlet of the first heat exchanger 1 are switched on and off through a second electromagnetic valve 3; the cooling subsystem comprises a first water pump 4, a third electromagnetic valve 5 and a charging station 6 which are connected in sequence, and further comprises a first fan 7 arranged on the charging station 6, and a first temperature detection device 8 used for detecting the current temperature value of the charging station 6, the controller is electrically connected with the first water pump 4, the first electromagnetic valve 2, the second electromagnetic valve 3 and the first temperature detection device 8 respectively, when the first temperature detection device 8 detects that the current temperature value of the charging station 6 is larger than or equal to a first preset threshold value, the controller controls the first electromagnetic valve 2, the second electromagnetic valve 3, the third electromagnetic valve 5 and the first water pump 4 to be opened, so that the cooling subsystem absorbs the fluid medium of the heat of the charging station 6 to enter a heat source inlet of the heat exchanger, and the cold storage subsystem releases the cold source of the cold energy to enter a cold source inlet of the first heat exchanger 1.
In this embodiment, charging station temperature regulation and control system utilizes first fan 7 among the cooling subsystem to appear cooling to charging station 6 that generates heat in the ordinary work to when monitoring that the cooling ability of first fan 7 is not enough effectively to charging station 6 cooling, utilize cold-storage subsystem to provide extra cooling effect for charging station 6 through first heat exchanger 1, solve the problem that the air-cooling of first fan 7 is insufficient when ambient temperature is higher.
Specifically, the type of the first heat exchanger 1 is preferably a plate heat exchanger, and the cold accumulation subsystem is switched on and off with a cold source inlet of the first heat exchanger 1 through a first electromagnetic valve 2. And the cooling subsystem and the heat source inlet of the first heat exchanger 1 are switched on and off through a second electromagnetic valve 3.
The cooling subsystem comprises a first water pump 4, a third electromagnetic valve 5 and a charging station 6 which are sequentially connected, and further comprises a first fan 7 arranged on the charging station 6, and a first temperature detection device 8 (such as a temperature sensor) used for detecting the current temperature value of the charging station 6. The controller is respectively electrically connected with the first water pump 4, the first electromagnetic valve 2, the second electromagnetic valve 3 and the first temperature detection device 8, when the first temperature detection device 8 detects that the current temperature value of the charging station 6 is greater than or equal to a first preset threshold value (for example, 50 ℃), the controller (for example, a CPU, not shown in the figure) controls the first electromagnetic valve 2, the second electromagnetic valve 3, the third electromagnetic valve 5 and the first water pump 4 to be opened, so that the first water pump 4 outputs a fluid medium (for example, water or liquid nitrogen) to flow through the charging station 6 and absorb heat of the charging station 6 to enter a heat source inlet of the heat exchanger, the fluid medium of the subsystem cold storage and cold energy release enters a cold source inlet of the first heat exchanger 1, heat exchange is completed in the first heat exchanger 1 through two paths of fluid media respectively carrying heat and cold energy, so as to further cool the charging station 6, and even a safety accident caused by overheating of the charging station 6 due to the fact that the cooling capacity of the first fan 7 is insufficient to effectively cool the charging station 6 is avoided.
When the first temperature detection device 8 detects that the current temperature value of the charging station 6 is smaller than a first preset threshold value, the controller controls the first electromagnetic valve 2, the second electromagnetic valve 3, the third electromagnetic valve 5 and the first water pump 4 to be closed, so that the cooling subsystem is in an air cooling mode, cooling is realized only by a fan, and consumption of cold energy is reduced.
In another embodiment, the charging station 6 comprises at least one charging unit, each charging unit is connected with a third electromagnetic valve 5, a first fan 7 and a first temperature detection device 8, and the processor can control the charging units individually or collectively.
In a further preferred embodiment of the present invention, as shown in fig. 3, the cold storage subsystem includes a cold storage tank 9, a second water pump 10, a fourth electromagnetic valve 11, and a heat dissipation device 12 connected in sequence, and further includes a second temperature detection device 13 for detecting a current temperature value of the heat dissipation device 12, the controller is electrically connected to the second water pump 10, the fourth electromagnetic valve 11, and the second temperature detection device 13, respectively, and when the second temperature detection device 13 detects that the current temperature value is less than or equal to a second preset threshold, the controller controls the fourth electromagnetic valve 11 and the second water pump 10 to be opened, and controls the first electromagnetic valve 2 to be closed, so that a fluid medium of the second water pump 10 flows through the cold storage tank 9 to absorb heat of the cold storage tank 9, and discharges the heat to the outside through the heat dissipation device 12.
In this embodiment, the cold storage subsystem includes a cold storage tank 9, a second water pump 10, a fourth electromagnetic valve 11, and a heat dissipation device 12, which are connected in sequence, and further includes a second temperature detection device 13 (for example, a temperature sensor) for detecting a current temperature value of the heat dissipation device 12. The cold storage box 9 is a second heat exchanger with a Phase Change Material (PCM) arranged inside, and the type of the second heat exchanger is shell-and-tube type, ribbed plate type, pin-fin tube type or finned tube type. By utilizing the characteristics of the phase-change material arranged in the second heat exchanger, when the ambient temperature is lower, for example, less than or equal to a second preset threshold value, the phase-change material releases heat to the environment to generate phase change (for example, the phase-change material changes from liquid state to solid state), the cold energy of the environment is stored in the phase-change material, when the ambient temperature is higher, for example, greater than or equal to a first preset threshold value, the phase-change material absorbs heat from the environment to generate phase change (for example, the phase change material changes from solid state to liquid state), the stored cold energy is released when the ambient temperature is lower, an additional cooling effect is provided for the charging station 6, and the problem of insufficient refrigeration of air cooling when the ambient temperature is higher is solved. The heat sink 12 includes a heat exchanger 121 connected to the fourth solenoid valve 11, and a second fan 122 disposed at a heat sink of the heat exchanger 121.
The controller is respectively electrically connected with the second water pump 10, the fourth electromagnetic valve 11 and the second temperature detection device 13, and when the second temperature detection device 13 detects that the current temperature value is less than or equal to a second preset threshold value (for example, 20 ℃), the ambient temperature is lower, so that the controller is suitable for heat dissipation and cold storage of the phase-change material. By controlling the fourth electromagnetic valve 11 and the second water pump 10 to open and controlling the first electromagnetic valve 2 to close, the cold accumulation mode of the cold accumulation subsystem is started, so that the fluid medium of the second water pump 10 flows through the cold accumulation box 9 to absorb the heat of the cold accumulation box 9, the heat is discharged to the outside through the heat dissipation device 12, the temperature of the fluid medium is reduced, and the fluid medium flows into the cold accumulation box 9 again to form a circulation loop.
As shown in fig. 2, when the second temperature detecting device 13 detects that the current temperature value of the heat dissipating device 12 is greater than the second preset threshold and smaller than the first preset threshold, the controller controls the first electromagnetic valve 2, the fourth electromagnetic valve 11 and the second water pump 10 to be closed, so that the cold storage subsystem is in the sleep mode.
In a further preferred embodiment of the present invention, as shown in fig. 1, both the cold storage subsystem and the cooling subsystem comprise a fluid medium replenishment tank 14 for replenishing the fluid medium inside the cold storage subsystem or the cooling subsystem.
In this embodiment, in consideration of the normal consumption of the fluid medium, the fluid medium can be replenished to the system through the fluid medium replenishment tank 14 when the fluid medium in the system is insufficient.
In another aspect, there is provided a control method of the charging station temperature control system, as shown in fig. 4, the method includes:
s110: when the current temperature value of the charging station 6 is detected to be greater than or equal to a first preset threshold value, the first electromagnetic valve 2, the second electromagnetic valve 3, the third electromagnetic valve 5 and the first water pump 4 are controlled to be opened, so that the fluid medium of the cooling subsystem absorbing heat of the charging station 6 enters a heat source inlet of the heat exchanger, and the fluid medium of the cold storage subsystem releasing cold energy enters a cold source inlet of the first heat exchanger 1;
in this embodiment, charging station temperature regulation and control system utilizes first fan 7 among the cooling subsystem to appear cooling to charging station 6 that generates heat in the ordinary work to when monitoring that the cooling ability of first fan 7 is not enough effectively to charging station 6 cooling, utilize cold-storage subsystem to provide extra cooling effect for charging station 6 through first heat exchanger 1, solve the problem that the air-cooling of first fan 7 is insufficient when ambient temperature is higher.
When the first temperature detection device 8 detects that the current temperature value of the charging station 6 is greater than or equal to a first preset threshold value (for example, 50 ℃), the controller (for example, a CPU) controls the first electromagnetic valve 2, the second electromagnetic valve 3, the third electromagnetic valve 5 and the first water pump 4 to be opened, so that the first water pump 4 outputs a fluid medium (for example, water or liquid nitrogen) to flow through the charging station 6 and absorb heat of the charging station 6 to enter a heat source inlet of the heat exchanger, the fluid medium of cold energy released by the cold storage subsystem enters a cold source inlet of the first heat exchanger 1, and the two paths of fluid media respectively carrying heat and cold energy complete heat exchange in the first heat exchanger 1, so that the charging station 6 is further cooled, and the problem that the charging station 6 is overheated and fails or even a safety accident is caused because the cooling capacity of the first fan 7 is insufficient to effectively cool the charging station 6 is avoided.
When the first temperature detection device 8 detects that the current temperature value of the charging station 6 is smaller than a first preset threshold value, the controller controls the first electromagnetic valve 2, the second electromagnetic valve 3, the third electromagnetic valve 5 and the first water pump 4 to be closed, so that the cooling subsystem is in an air cooling mode, cooling is realized only by a fan, and consumption of cold energy is reduced.
S120: when detecting that the current temperature value of the heat dissipation device 12 is less than or equal to the second preset threshold value, the fourth electromagnetic valve 11 and the second water pump 10 are controlled to be opened, and the first electromagnetic valve 2 is controlled to be closed, so that the fluid medium of the second water pump 10 flows through the cold storage box 9 to absorb heat of the cold storage box 9, and the heat is discharged to the outside through the heat dissipation device 12.
In this embodiment, when the second temperature detection device 13 detects that the current temperature value is less than or equal to a second preset threshold (for example, 20 ℃), it indicates that the environmental temperature is low at this time, and the phase change material is suitable for heat dissipation and cold storage. By controlling the fourth electromagnetic valve 11 and the second water pump 10 to be opened and the first electromagnetic valve 2 to be closed, the cold accumulation mode of the cold accumulation subsystem is started, so that the fluid medium of the second water pump 10 flows through the cold accumulation box 9 to absorb the heat of the cold accumulation box 9, the heat is discharged to the outside through the heat dissipation device 12, the temperature of the fluid medium is reduced, and the fluid medium flows into the cold accumulation box 9 again to form a circulation loop.
When the second temperature detection device 13 detects that the current temperature value of the heat dissipation device 12 is greater than the second preset threshold and smaller than the first preset threshold, the controller controls the first electromagnetic valve 2, the fourth electromagnetic valve 11 and the second water pump 10 to be closed, so that the cold storage subsystem is in the sleep mode.
It should be noted that, for simplicity of description, the above-mentioned embodiments are described as a series of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or communication connection may be an indirect coupling or communication connection between devices or units through some interfaces, and may be in a telecommunication or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above examples are only used to illustrate the technical solutions of the present invention, and do not limit the scope of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from these embodiments without making any inventive step, fall within the scope of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still make various combinations, additions, deletions or other modifications of the features of the embodiments of the present invention according to the situation without conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present invention, and these technical solutions also fall within the protection scope of the present invention.
Claims (7)
1. A temperature regulation and control system of a charging station is characterized by comprising a cold accumulation subsystem, a cooling subsystem, a controller and a first heat exchanger which is arranged between the cold accumulation subsystem and the cooling subsystem and is used for exchanging heat, wherein the cold accumulation subsystem and a cold source inlet of the first heat exchanger are switched on and off through a first electromagnetic valve, and the cooling subsystem and a heat source inlet of the first heat exchanger are switched on and off through a second electromagnetic valve;
the cooling subsystem comprises a first water pump, a third electromagnetic valve, a charging station, a first fan and a first temperature detection device, wherein the first water pump, the third electromagnetic valve and the charging station are sequentially connected, the first fan is arranged on the charging station, the first temperature detection device is used for detecting the current temperature value of the charging station, the controller is respectively electrically connected with the first water pump, the first electromagnetic valve, the second electromagnetic valve and the first temperature detection device, when the first temperature detection device detects that the current temperature value of the charging station is greater than or equal to a first preset threshold value, the controller controls the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the first water pump to be opened, so that a fluid medium absorbing heat of the charging station by the cooling subsystem enters a heat source inlet of the first heat exchanger, and a fluid medium releasing cold energy by the cold accumulation subsystem enters a cold source inlet of the first heat exchanger; when the first temperature detection device detects that the current temperature value of the charging station is smaller than a first preset threshold value, the controller controls the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the first water pump to be closed so as to enable the cooling subsystem to be in an air cooling mode; the cold accumulation subsystem comprises a cold accumulation box, a second water pump, a fourth electromagnetic valve, a heat dissipation device and a second temperature detection device for detecting the current temperature value of the heat dissipation device, wherein the cold accumulation box, the second water pump, the fourth electromagnetic valve and the heat dissipation device are sequentially connected, the controller is respectively electrically connected with the second water pump, the fourth electromagnetic valve and the second temperature detection device, when the second temperature detection device detects that the current temperature value of the heat dissipation device is smaller than or equal to a second preset threshold value, the controller controls the fourth electromagnetic valve and the second water pump to be opened and controls the first electromagnetic valve to be closed, so that a fluid medium of the second water pump flows through the cold accumulation box to absorb heat of the cold accumulation box and discharges the heat to the outside through the heat dissipation device, and the second preset threshold value is smaller than the first preset threshold value; when the second temperature detection device detects that the current temperature value of the heat dissipation device is larger than a second preset threshold value and smaller than the first preset threshold value, the controller controls the first electromagnetic valve, the fourth electromagnetic valve and the second water pump to be closed, so that the cold accumulation subsystem is in a sleep mode.
2. The charging station temperature regulation system of claim 1, wherein the heat sink comprises a heat exchanger connected to the fourth solenoid valve, and a second fan disposed at a heat sink of the heat exchanger.
3. The charging station temperature regulation system of claim 2, wherein the cold storage tank is a second heat exchanger with a phase change material built therein, and the type of the second heat exchanger is a shell-and-tube type, a ribbed plate type, a pin-fin tube type or a fin-tube type.
4. The charging station temperature regulation system of claim 1, wherein the charging station comprises at least one charging unit, each charging unit is connected with a third solenoid valve, a first fan and a first temperature detection device, and the processor can control each charging unit individually or collectively.
5. The charging station temperature regulation system of claim 4, wherein the cold storage subsystem and the cooling subsystem each comprise a fluid medium replenishment tank for replenishing the fluid medium inside the cold storage subsystem or the cooling subsystem.
6. The charging station temperature regulation system of claim 1, wherein the first heat exchanger is of a plate type.
7. A regulation method of a charging station temperature regulation system according to any one of claims 1 to 6, comprising:
when the current temperature value of the charging station is detected to be larger than or equal to a first preset threshold value, controlling a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a first water pump to be opened so that a fluid medium of which the cooling subsystem absorbs heat of the charging station enters a heat source inlet of a first heat exchanger, and a fluid medium of which the cold storage subsystem releases cold energy enters a cold source inlet of the first heat exchanger;
when the first temperature detection device detects that the current temperature value of the charging station is smaller than a first preset threshold value, the controller controls the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the first water pump to be closed so as to enable the cooling subsystem to be in an air cooling mode;
when the current temperature value of the heat dissipation device is detected to be smaller than or equal to a second preset threshold value, the fourth electromagnetic valve and the second water pump are controlled to be opened, and the first electromagnetic valve is controlled to be closed, so that the fluid medium of the second water pump flows through the cold storage box to absorb heat of the cold storage box and is discharged to the outside through the heat dissipation device;
when the second temperature detection device detects that the current temperature value of the heat dissipation device is larger than a second preset threshold value and smaller than the first preset threshold value, the controller controls the first electromagnetic valve, the fourth electromagnetic valve and the second water pump to be closed, so that the cold accumulation subsystem is in a sleep mode.
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