CN114784402A - Environmental control system applied to liquid cooling energy storage system - Google Patents
Environmental control system applied to liquid cooling energy storage system Download PDFInfo
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- CN114784402A CN114784402A CN202210348543.7A CN202210348543A CN114784402A CN 114784402 A CN114784402 A CN 114784402A CN 202210348543 A CN202210348543 A CN 202210348543A CN 114784402 A CN114784402 A CN 114784402A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 63
- 239000007788 liquid Substances 0.000 title claims abstract description 56
- 238000001816 cooling Methods 0.000 title claims abstract description 49
- 230000007613 environmental effect Effects 0.000 title claims description 21
- 230000017525 heat dissipation Effects 0.000 claims abstract description 47
- 238000004378 air conditioning Methods 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 28
- 238000012544 monitoring process Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 239000012530 fluid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
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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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
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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
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
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- Thermal Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides an environment control system applied to a liquid cooling energy storage system, which comprises an external heat dissipation unit, a battery heat management unit, a prefabricated cabin management unit, an equipment cabin management unit and a control unit, and belongs to the technical field of energy storage systems. The environment control system applied to the liquid cooling energy storage system provided by the invention realizes integrated system composition, intelligent system control and high-sealing-level protection. The battery system heat management system, the prefabricated cabin environment control system and the electrical equipment cabin environment control system are combined to form an integrated environment control system, and meanwhile, the battery system heat management requirement, the prefabricated cabin environment temperature and humidity control requirement and the electrical equipment cabin environment temperature and humidity control requirement are met. And through setting up prefabricated cabin management unit and equipment cabin management unit in the inside protection level that does not need to set up extra opening and improve whole energy storage system of casing of system, satisfy the various adverse circumstances operation demands of system, it is more convenient to make energy storage system adjust.
Description
Technical Field
The invention belongs to the technical field of energy storage systems, and particularly relates to an environment control system applied to a liquid-cooled energy storage system.
Background
With the popularization and application of new energy sources such as solar energy, wind energy and the like, an energy storage technology develops, and lithium batteries gradually become mainstream products for energy storage because of the advantages of higher energy, long service life, high rated voltage, high power bearing capacity, very low self-discharge rate, light weight, environmental protection, basically no water consumption in production and the like. Among various energy storage technologies, lithium ion batteries are becoming more and more candidates for new energy industries, and vehicle-mounted energy storage devices due to their high energy density characteristics and high commercialization prospects. However, as the capacity and the power of the energy storage battery system are gradually increased, the heat generation amount is also increased, so that the temperature of the energy storage battery system is increased greatly and the temperature is high in the working process. Because the comprehensive performance of the lithium ion battery is sensitive to the working temperature, the power performance of the battery can be reduced when the battery works at a high temperature for a long time, the aging of the battery is accelerated, and the cycle life of an energy storage system is influenced. And the electrical equipment that control lithium cell carries out charge-discharge also can produce a large amount of heats in the operation process, like energy storage converter (PCS), consequently need cool down lithium cell and electrical equipment simultaneously in energy storage system working process. At present, in the prior art, a liquid cooling system is traditionally adopted to cool the lithium battery aiming at the cooling of the lithium battery and the electrical equipment. The air cooling system is adopted to cool the electrical equipment (namely, a box body for loading the electrical equipment is provided with a vent, and hot air in the box body is discharged through a fan to enable outdoor cold air to enter the box body), so that two different cooling devices are required to be arranged to cool the liquid cooling system and a case for installing the electrical equipment respectively. Destroy the leakproofness of box in the cooling for inside dust, little worm etc. get into the box easily, make the stability variation of box internal environment, and then influence lithium cell and electrical equipment's life, maintain two sets of cooling system simultaneously and also increased the maintenance cost of system.
Disclosure of Invention
The invention aims to provide an environment control system applied to a liquid cooling energy storage system, and aims to solve the problems that the stability of the internal environment of a box body of the energy storage system in the prior art is poor, the service life of a lithium battery and electrical equipment is influenced, and the system maintenance cost is high by adopting two sets of cooling schemes.
In order to realize the purpose, the invention adopts the technical scheme that: the utility model provides an environmental control system for liquid cooling energy storage system, including outside radiating element, set up be used for battery temperature control in energy storage system's prefabricated cabin battery thermal management unit, set up be used for prefabricated cabin inner space temperature control's prefabricated cabin administrative unit in energy storage system's prefabricated cabin, set up be used for electrical equipment radiating equipment cabin administrative unit in energy storage system's equipment cabin and be used for controlling outside radiating element, battery thermal management unit, prefabricated cabin administrative unit and the control unit of equipment cabin administrative unit running state, battery thermal management unit, prefabricated cabin administrative unit and equipment cabin administrative unit divide equally respectively outside radiating element pipeline intercommunication forms respective circulation circuit, still be provided with the first collection module that is used for monitoring temperature and humidity in the prefabricated cabin in the energy storage system's prefabricated cabin, And the second acquisition module is used for monitoring the temperature of the battery cell, a third acquisition module used for monitoring the temperature and the humidity in the equipment cabin is further arranged in the equipment cabin of the energy storage system, and the first acquisition module, the second acquisition module and the third acquisition module are electrically connected with the control unit.
In a possible implementation mode, outside heat dissipation unit include circulation power pack, with air conditioner water chilling unit that circulation power pack tube coupling, with circulation power pack tube coupling and with the parallelly connected air-cooled heat dissipation module who sets up of air conditioner water chilling unit and be used for monitoring outdoor ambient temperature and the fourth collection module of being connected with the control unit electricity, air conditioner water chilling unit with be provided with first solenoid valve on the pipeline between the circulation power pack, still be provided with the second solenoid valve on the pipeline between air-cooled heat dissipation module and the circulation power pack.
In a possible implementation manner, the external heat dissipation unit further comprises a liquid expansion container used for accommodating volume change of liquid in the pipeline, and an inlet of the liquid expansion container is connected to the pipeline on one side of the inlet of the circulating power unit through the pipeline.
In a possible implementation manner, the equipment room management unit includes a plurality of air-conditioning end devices disposed in the equipment room and connected to the external heat dissipation unit through pipelines, and a gas heating unit disposed inside the air-conditioning end devices.
In a possible implementation manner, the plurality of air conditioner terminal devices are connected in parallel through pipelines, and a third electromagnetic valve is further arranged on the pipeline between the equipment cabin management unit and the outlet of the external heat dissipation unit.
In a possible implementation manner, the battery thermal management unit includes a plurality of battery liquid-cooled packs connected in parallel through a pipeline, and a fourth electromagnetic valve disposed on the pipeline between the battery liquid-cooled Pack and the external heat dissipation unit.
In a possible implementation manner, the battery thermal management unit further includes a cold liquid heating unit for heating cold liquid in a pipeline, and the cold liquid heating unit is disposed on the pipeline between the battery thermal management unit and the fourth electromagnetic valve.
In a possible implementation manner, the prefabricated cabin management unit comprises a plurality of air-conditioning end devices which are arranged in the prefabricated cabin and connected with the external heat dissipation unit through pipelines, and a gas heating unit arranged inside the air-conditioning end devices.
In a possible implementation manner, a fifth electromagnetic valve is arranged on a pipeline between the prefabricated cabin management unit and the external heat dissipation unit.
The environmental control system applied to the liquid cooling energy storage system has the beneficial effects that: compared with the prior art, the battery heat management unit is arranged in the prefabricated cabin of the energy storage system to ensure the stability of the temperature of the battery, and the external heat dissipation unit connected with the battery heat management unit through a pipeline is further arranged to provide cold liquid for the battery heat management unit. And a prefabricated cabin management unit and an equipment cabin management unit are also respectively arranged in the prefabricated cabin and the equipment cabin of the energy storage system, and are connected with an external heat dissipation unit through pipelines to form a circulation loop. The system is characterized by further comprising a control unit used for controlling the operation state of the external heat dissipation unit, the battery heat management unit, the prefabricated cabin management unit and the equipment cabin management unit, a first acquisition module used for monitoring the temperature and humidity in the prefabricated cabin and a second acquisition module used for monitoring the temperature of a battery cell are further arranged in the prefabricated cabin of the energy storage system, a third acquisition module used for monitoring the temperature and humidity in the equipment cabin is further arranged in the equipment cabin of the energy storage system, and the first acquisition module, the second acquisition module and the third acquisition module are all electrically connected with the control unit. The invention is applied to the environment control system of the liquid cooling energy storage system, and realizes integrated system composition, intelligent system control and high-sealing-level protection. The battery system heat management system, the prefabricated cabin environment control system and the electrical equipment cabin environment control system are combined to form an integrated environment control system, and meanwhile, the battery system heat management requirement, the prefabricated cabin environment temperature and humidity control requirement and the electrical equipment cabin environment temperature and humidity control requirement are met. And through setting up prefabricated cabin management unit and equipment cabin management unit in the inside protection level that does not need to set up extra opening and improve whole energy storage system of casing of system, satisfy the various adverse circumstances operation demands of system, it is more convenient to make energy storage system adjust.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an environmental control system applied to a liquid-cooled energy storage system according to the present invention;
fig. 2 is a schematic diagram of an environmental control system applied to a liquid-cooled energy storage system according to the present invention.
In the figure: 1. an external heat dissipation unit; 2. a battery thermal management unit; 3. a prefabricated cabin management unit; 4. an equipment cabin management unit; 5. a control unit; 6. a first acquisition module; 7. a second acquisition module; 8. a third acquisition module; 9. a circulating power unit; 10. an air-conditioning water-cooling unit; 11. an air-cooled heat dissipation module; 12. a first solenoid valve; 13. a second solenoid valve; 14. a liquid expansion vessel; 15. an air conditioning terminal device; 16. a gas heating unit; 17. a third electromagnetic valve; 18. battery liquid cooling Pack; 19. a cold liquid heating unit; 20. a fourth solenoid valve; 21. and a fifth solenoid valve.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2, an environmental control system applied to a liquid-cooled energy storage system according to the present invention will now be described. The environment control system applied to the liquid cooling energy storage system comprises an external heat dissipation unit 1, a battery heat management unit 2 arranged in a prefabricated cabin of the energy storage system and used for controlling the temperature of a battery, a prefabricated cabin management unit 3 arranged in the prefabricated cabin in the energy storage system and used for controlling the temperature of the internal space of the prefabricated cabin, an equipment cabin management unit 4 arranged in an equipment cabin of the energy storage system and used for dissipating heat of electrical equipment, and a control unit 5 used for controlling the operation states of the external heat dissipation unit 1, the battery heat management unit 2, the prefabricated cabin management unit 3 and the equipment cabin management unit 4, wherein the battery heat management unit 2, the prefabricated cabin management unit 3 and the equipment cabin management unit 4 are respectively communicated with the external heat dissipation unit 1 through pipelines to form respective circulation loops, and a first acquisition module 6 used for monitoring the temperature and the humidity in the prefabricated cabin is further arranged in the prefabricated cabin of the energy storage system, And a second acquisition module 7 for monitoring the temperature of the battery cell, a third acquisition module 8 for monitoring the temperature and humidity in the equipment cabin is further arranged in the equipment cabin of the energy storage system, and the first acquisition module 6, the second acquisition module 7 and the third acquisition module are all electrically connected with the control unit 5.
Compared with the prior art, the environmental control system applied to the liquid cooling energy storage system provided by the embodiment guarantees the stability of the temperature of the battery by arranging the battery heat management unit 2 in the prefabricated cabin of the energy storage system, and is further provided with the external heat dissipation unit 1 connected with the battery heat management unit 2 through a pipeline to provide cold liquid for the battery heat management unit 2. And a prefabricated cabin management unit 3 and an equipment cabin management unit 4 are respectively arranged in a prefabricated cabin and an equipment cabin of the energy storage system, and the prefabricated cabin management unit 3 and the equipment cabin management unit 4 are connected with an external heat dissipation unit 1 through pipelines to form a circulation loop. The system is further provided with a control unit 5 for controlling the running states of the external heat dissipation unit 1, the battery heat management unit 2, the prefabricated cabin management unit 3 and the equipment cabin management unit 4, a first acquisition module 6 for monitoring the temperature and humidity in the prefabricated cabin and a second acquisition module 7 for monitoring the temperature of a battery cell are further arranged in the prefabricated cabin of the energy storage system, a third acquisition module 8 for monitoring the temperature and humidity in the equipment cabin is further arranged in the equipment cabin of the energy storage system, and the first acquisition module 6, the second acquisition module 7 and the third acquisition module are all electrically connected with the control unit 5. The invention is applied to the environment control system of the liquid cooling energy storage system, and realizes integrated system composition, intelligent system control and high-sealing-level protection. The battery system heat management system, the prefabricated cabin environment control system and the electrical equipment cabin environment control system are combined to form an integrated environment control system, the heat management requirements of the battery system, the prefabricated cabin environment temperature and humidity control requirements and the electrical equipment cabin environment temperature and humidity control requirements are met, and the consumption of system energy is saved. And the prefabricated cabin management unit 3 and the equipment cabin management unit 4 are arranged in the shell of the system, so that an extra opening is not required to be arranged, the protection level of the whole energy storage system is improved, and various severe environment operation requirements of the system are met.
Specifically, the control unit 5 collects and monitors the temperature of the battery core, the temperature and humidity of the prefabricated cabin and the temperature and humidity of the electric equipment cabin through the data collection module. When the state of one or more subsystems meets the starting requirement (through presetting temperature and humidity), a system control unit 5 in the control system sends corresponding control signals to specific equipment, and controls each equipment according to a preset control strategy to realize combined operation. In addition, according to the communication protocol and requirements. The environment control system also comprises a data uploading unit which is electrically connected with the control unit 5 and is used for uploading the collected data and the operation data to an external platform.
In some possible implementations, as shown in fig. 1 and fig. 2, the external heat dissipation unit 1 with the above features includes a circulating power unit 9, an air-conditioning water-cooling unit 10 connected to the circulating power unit 9 through a pipeline, an air-cooling heat dissipation module 11 connected to the circulating power unit 9 through a pipeline and connected to the air-conditioning water-cooling unit 10 in parallel, and a fourth collection module used for monitoring the outdoor environment temperature and electrically connected to the control unit 5, a first electromagnetic valve 12 is disposed on a pipeline between the air-conditioning water-cooling unit 10 and the circulating power unit 9, and a second electromagnetic valve 13 is further disposed on a pipeline between the air-cooling heat dissipation module 11 and the circulating power unit 9. The circulating power unit 9, the air-conditioning water cooling unit 10, the air-cooling heat dissipation module 11, the first electromagnetic valve 12 and the second electromagnetic valve 13 are electrically connected with the control unit 5, and the operation state is controlled by the control unit 5. The air-conditioning water-cooling unit 10 and the air-cooling heat dissipation module 11 can cool the cold liquid and are arranged in parallel through a pipeline, and the control unit 5 can select the external heat dissipation unit 1 according to the outdoor temperature acquired by the fourth acquisition module when the external heat dissipation unit works. When the outdoor temperature is high, the air-conditioning water cooling unit 10 and the first electromagnetic valve 12 are selectively started, and when the outdoor temperature is low, the air-cooling heat dissipation module 11 and the second electromagnetic valve 13 can be selectively started, so that the external heat dissipation unit 1 is more energy-saving and convenient to use.
In some possible implementations, as shown in fig. 1 and 2, the external heat dissipation unit 1 further includes a liquid expansion tank 14 for accommodating volume changes of liquid in the pipeline, and an inlet of the liquid expansion tank 14 is connected to the pipeline on the inlet side of the circulation power unit 9 through the pipeline. Specifically, the top of the liquid expansion container 14 is provided with an opening, and the bottom of the liquid expansion container 14 is communicated with the main pipeline through a pipeline. The liquid expansion container 14 can be arranged to have the functions of water replenishing, air exhausting and pressure balancing of the system, so that the system can run more stably.
In some possible implementations, as shown in fig. 1 and 2, the equipment room management unit 4 includes a plurality of air conditioning end devices 15 disposed in the equipment room and connected to the external heat dissipation unit 1 through pipes, and a gas heating unit 16 disposed inside the air conditioning end devices 15. Specifically, the air conditioning end device 15 may be an air conditioning indoor unit, and the control in the equipment room may be cooled by gasifying the cold liquid to absorb heat. The gas heating unit 16 can be arranged at a vent of the air conditioning terminal equipment 15, and when the temperature in the equipment room is too low, the air in the equipment room can be heated, so that the electric equipment is prevented from being influenced by too low temperature. Preferably, the gas heating unit 16 may be a PTC heating module, so that the gas heating unit 16 is safer and more convenient to use.
In some possible implementations, as shown in fig. 1 and 2, a plurality of air conditioning end devices 15 are connected in parallel to each other through a pipeline, and a third electromagnetic valve 17 is further disposed on the pipeline between the equipment room management unit 4 and the outlet of the external heat dissipation unit 1. Specifically, the third electromagnetic valve 17 is also electrically connected to the control unit 5, and the third electromagnetic valve 17 can be arranged to conveniently control the opening and closing of the equipment compartment management unit 4.
In some possible implementations, as shown in fig. 1 and 2, the battery thermal management unit 2 includes a plurality of battery liquid-cooled packs 18 arranged in parallel by pipes, and a fourth solenoid valve 20 arranged on the pipe between the battery liquid-cooled Pack18 set and the external heat dissipation unit 1. Specifically, a plurality of battery liquid cooling Pack18 are connected in parallel with each other through the pipeline, provide the cooling source or circulating liquid for battery liquid cooling Pack18 through outside radiating element 1, can be through the cooling liquid in battery liquid cooling Pack18 to the battery cooling when the battery temperature is too high.
On the basis of the battery thermal management unit 2, as shown in fig. 1 and fig. 2, the battery thermal management unit 2 further includes a cold liquid heating unit 19 for heating cold liquid in the pipeline, and the cold liquid heating unit 19 is disposed on the pipeline between the battery thermal management unit 2 and the fourth electromagnetic valve 20. The cold liquid heating unit 19 is arranged to heat the cold liquid passing through the battery Pack when the temperature of the battery cell is too low, so as to heat the battery.
In some possible implementations, as shown in fig. 1 and 2, the prefabricated cabin management unit 3 includes a plurality of air conditioning end devices 15 disposed in the prefabricated cabin and connected to the external heat dissipation unit 1 through pipes, and a gas heating unit 16 disposed inside the air conditioning end devices 15. Specifically, the air conditioning end device 15 may be an air conditioning indoor unit, and the control in the equipment room may be cooled by gasifying the cold liquid to absorb heat. The gas heating unit 16 can be arranged at the vent of the air conditioning terminal equipment 15, and when the temperature in the prefabricated cabin is too low, the air in the prefabricated cabin can be heated, so that the electric equipment is prevented from being influenced by too low temperature. Preferably, the gas heating unit 16 may be a PTC heating module, so that the gas heating unit 16 can be used more safely and conveniently
In order to facilitate the opening and closing of the prefabricated cabin management unit 3, as shown in fig. 1 and 2, a fifth electromagnetic valve 21 is provided on a pipeline between the prefabricated cabin management unit 3 and the external heat dissipation unit 1. Specifically, the fifth electromagnetic valve 21 is also electrically connected to the control unit 5, and the fifth electromagnetic valve 21 is configured to conveniently control the opening and closing of the equipment compartment management unit 4.
The working principle of the system under the cooling working condition is as follows: when the highest temperature of the battery reaches a certain control threshold, the first acquisition module 6 sends a signal to the control unit 5, then the control unit 5 sends an instruction to the external cooling unit, the liquid circulation water pump is started, and the fourth electromagnetic valve 20 is opened. Evaluating the external environment temperature through a fourth acquisition module, and if the external environment temperature is higher than the strategy environment temperature, controlling the first electromagnetic valve 12 to be opened by the control unit 5, and simultaneously opening the air-conditioning water-cooling unit 10; otherwise, the control unit 5 controls the second electromagnetic valve 13 to open, and simultaneously starts the air-cooled heat dissipation module 11. Then the low-temperature liquid enters the battery liquid cooling Pack18 through a pipeline, and the temperature of the battery is reduced. And the control unit 5 can simultaneously judge whether to control the temperature and the humidity of the equipment compartment and the prefabricated compartment according to the temperature and the humidity data acquired by the second acquisition module 7 and the third acquisition module 8. When the equipment compartment has an environmental control requirement, the control unit 5 opens the third electromagnetic valve 17 and starts the air conditioner terminal equipment 15 to realize fluid circulation; when the prefabricated cabin has an environmental control requirement, the control system opens the fifth electromagnetic valve 21 and starts the air-conditioning terminal equipment 15 to realize fluid circulation.
The working principle of the system under the heating working condition is as follows: when the lowest temperature of the battery reaches a certain control threshold value, the first acquisition module 6 sends a signal to the control unit 5, then the control unit 5 sends an instruction to the external cooling unit, the liquid circulation water pump is started, the fourth electromagnetic valve 20 is opened, and meanwhile, the battery PTC cold liquid heating module is started. High-temperature liquid enters the battery liquid cooling Pack18 through the pipeline, and the temperature of the battery is increased. And simultaneously judging whether the equipment cabin and the prefabricated cabin are subjected to temperature and humidity control or not. When the equipment compartment has an environmental control requirement, the control unit 5 opens the third electromagnetic valve 17 and starts the air conditioner terminal equipment 15 to realize fluid circulation; when the prefabricated cabin has an environmental control requirement, the control system opens the fifth electromagnetic valve 21 and starts the air-conditioning end equipment 15 to realize fluid circulation.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The environment control system is characterized by comprising an external heat dissipation unit, a battery heat management unit arranged in a prefabricated cabin of the energy storage system and used for controlling the temperature of a battery, a prefabricated cabin management unit arranged in the prefabricated cabin of the energy storage system and used for controlling the internal space temperature of the prefabricated cabin, an equipment cabin management unit arranged in an equipment cabin of the energy storage system and used for cooling electrical equipment, and a control unit used for controlling the external heat dissipation unit, the battery heat management unit, the prefabricated cabin management unit and the equipment cabin management unit in running state, wherein the battery heat management unit, the prefabricated cabin management unit and the equipment cabin management unit are respectively communicated with the external heat dissipation unit through pipelines to form respective circulation loops, and a first acquisition module used for monitoring the temperature and humidity in the prefabricated cabin is further arranged in the prefabricated cabin of the energy storage system, And the second acquisition module is used for monitoring the temperature of the battery cell, the third acquisition module is also arranged in the equipment cabin of the energy storage system and is used for monitoring the temperature and the humidity in the equipment cabin, and the first acquisition module, the second acquisition module and the third acquisition module are electrically connected with the control unit.
2. The environmental control system for liquid-cooled energy storage systems of claim 1, wherein the external heat dissipation unit comprises a circulating power unit, an air-conditioning water-cooling unit connected with the circulating power unit through a pipeline, an air-cooling heat dissipation module connected with the circulating power unit through a pipeline and connected with the air-conditioning water-cooling unit in parallel, and a fourth collection module used for monitoring the outdoor environment temperature and electrically connected with the control unit, wherein a first electromagnetic valve is arranged on a pipeline between the air-conditioning water-cooling unit and the circulating power unit, and a second electromagnetic valve is arranged on a pipeline between the air-cooling heat dissipation module and the circulating power unit.
3. The environmental control system for a liquid-cooled energy storage system of claim 2, wherein said external heat sink unit further comprises a liquid expansion reservoir for accommodating volume changes of liquid in the conduit, said liquid expansion reservoir inlet being connected to the conduit on the inlet side of the circulating power unit via the conduit.
4. The environmental control system applied to a liquid-cooled energy storage system of claim 1, wherein the equipment room management unit comprises a plurality of air conditioning end devices disposed in the equipment room and connected to the external heat dissipation unit through pipes, and a gas heating unit disposed inside the air conditioning end devices.
5. The environmental control system for liquid-cooled energy storage systems of claim 4, wherein a plurality of air conditioning terminal devices are connected in parallel via a pipeline, and a third solenoid valve is disposed on the pipeline between the device cabin management unit and the outlet of the external heat dissipation unit.
6. The environmental control system for a liquid-cooled energy storage system of claim 1, wherein said battery thermal management unit comprises a plurality of battery liquid-cooled packs arranged in parallel via a pipeline, and a fourth solenoid valve arranged on the pipeline between said battery liquid-cooled Pack and said external heat sink unit.
7. The environmental control system applied to a liquid-cooled energy storage system according to claim 6, wherein the battery thermal management unit further comprises a cold liquid heating unit for heating cold liquid in a pipeline, and the cold liquid heating unit is disposed on the pipeline between the battery thermal management unit and the fourth solenoid valve.
8. The environmental control system applied to a liquid-cooled energy storage system of claim 1, wherein said prefabricated cabin management unit comprises a plurality of air conditioning end units disposed in the prefabricated cabin and connected to the external heat dissipation unit by pipes, and a gas heating unit disposed inside said air conditioning end units.
9. The environmental control system for a liquid cooled energy storage system of claim 1, wherein a fifth solenoid valve is disposed on a conduit between said prefabricated cabin management unit and said external heat dissipation unit.
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| CN117239305A (en) * | 2023-11-16 | 2023-12-15 | 上海勘测设计研究院有限公司 | Thermal management control method and device for cabin-type energy storage system |
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