CN117039240A - Energy storage air conditioner, energy storage air conditioner control method and energy storage battery cabinet temperature control system - Google Patents

Energy storage air conditioner, energy storage air conditioner control method and energy storage battery cabinet temperature control system Download PDF

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Publication number
CN117039240A
CN117039240A CN202310756261.5A CN202310756261A CN117039240A CN 117039240 A CN117039240 A CN 117039240A CN 202310756261 A CN202310756261 A CN 202310756261A CN 117039240 A CN117039240 A CN 117039240A
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China
Prior art keywords
cooling module
energy storage
air conditioner
target
refrigerating capacity
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Pending
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CN202310756261.5A
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Chinese (zh)
Inventor
李伟瀚
徐瑞
王雄飞
冯深燕
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Shenzhen Kstar Technology Co Ltd
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Shenzhen Kstar Technology Co Ltd
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Priority to CN202310756261.5A priority Critical patent/CN117039240A/en
Publication of CN117039240A publication Critical patent/CN117039240A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/325—Expansion valves having two or more valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
    • 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
    • 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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
    • 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
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/13—Pump speed control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides an energy storage air conditioner, an energy storage air conditioner control method and an energy storage battery cabinet temperature control system, wherein the energy storage air conditioner comprises an air cooling module, a water cooling module and a heat exchanger, the air cooling module comprises a condensing unit, and the water cooling module is connected with the condensing unit through the heat exchanger; and the condensing unit is used for discharging heat of the water cooling module and/or the air cooling module. According to the invention, the heat in the water cooling module is transferred to the condensing unit through the heat exchanger, so that the cooling effect of the water cooling module is realized, the power distribution requirement is reduced on the basis that the energy storage air conditioner simultaneously realizes air cooling and liquid cooling, the structural requirement on the energy storage container applying the energy storage air conditioner is reduced, and the energy storage container is convenient to apply.

Description

Energy storage air conditioner, energy storage air conditioner control method and energy storage battery cabinet temperature control system
Technical Field
The invention relates to the field of temperature control, in particular to an energy storage air conditioner, an energy storage air conditioner control method and an energy storage battery cabinet temperature control system.
Background
The energy storage container mainly protects a battery cabinet, a monitoring cabinet, a converter, a transformer, a fire protection system and pipelines, wherein the transformer, the converter and the like need to dissipate heat except that the battery cabinet with high heat density generates large heat to dissipate heat; the existing temperature control mainly cools the battery cabinet through an air-cooled cold water air conditioner, and cools equipment with relatively small heating value such as a transformer, a converter and the like through an air-cooled integrated wall-mounted air conditioner, namely the existing energy storage container can realize liquid cooling and air cooling only by installing two sets of air conditioning systems; however, this approach makes the structure of the energy storage container and the internal power distribution relatively complex, and inconvenient to use.
Disclosure of Invention
The invention mainly aims to provide an energy storage air conditioner, an energy storage air conditioner control method and an energy storage battery cabinet temperature control system, and aims to solve the problems of complex energy storage container structure and power distribution caused by a heat dissipation mode in the prior art.
In order to achieve the above purpose, the invention provides an energy storage air conditioner, which comprises an air cooling module, a water cooling module and a heat exchanger, wherein the air cooling module comprises a condensing unit, and the water cooling module is connected with the condensing unit through the heat exchanger;
and the condensing unit is used for discharging heat of the water cooling module and/or the air cooling module.
Optionally, the condensing unit comprises a condenser, an external fan, a compressor and a drying filter; wherein:
the input end of the compressor is connected with the output end of the evaporation unit, the output end of the compressor is connected with the input end of the condenser, and the output end of the condenser is connected with the input end of the evaporation unit through the drying filter.
Optionally, the device further comprises an evaporation unit, wherein the evaporation unit comprises an evaporator, an inner fan and a first electronic expansion valve; wherein:
the input end of the evaporator is connected with the output end of the condensing unit through the first electronic expansion valve, and the output end of the evaporator is connected with the input end of the condensing unit.
Optionally, the air cooling module further comprises a second electronic expansion valve; wherein:
the input end of the first side of the heat exchanger is connected with the output end of the condensing unit through the second electronic expansion valve, and the output end of the first side of the heat exchanger is connected with the input end of the condensing unit.
Optionally, the water cooling module comprises a main cooling pipeline, a circulating water pump, a heater, an expansion tank, a first temperature sensor, a second temperature sensor, a first pressure sensor and a second pressure sensor; wherein:
the first end of heater with the output of the second side of heat exchanger, the second end of heater with the input of cooling trunk line is connected, the input of cooling trunk line sets up first temperature sensor with first pressure sensor, the output of cooling trunk line with circulating water pump's input is connected, the output of cooling trunk line sets up second temperature sensor with second pressure sensor, circulating water pump's output with the input of the second side of heat exchanger is connected, the expansion tank with circulating water pump's input is connected.
In addition, in order to achieve the above object, the present invention further provides an energy storage air conditioner control method, where the energy storage air conditioner further includes a controller, the energy storage air conditioner control method is applied to the controller, and the energy storage air conditioner control method includes:
determining a first target refrigerating capacity corresponding to the air cooling module and a second target refrigerating capacity corresponding to the water cooling module;
setting working modes of the air cooling module and the water cooling module according to the first target refrigerating capacity and the second target refrigerating capacity respectively;
and setting the total refrigerating capacity of the condensing unit according to the first target refrigerating capacity and the second target refrigerating capacity.
Optionally, the step of determining the first target cooling capacity corresponding to the air cooling module and the second target cooling capacity corresponding to the water cooling module includes:
acquiring a first real-time temperature and a first expected temperature of the air cooling module corresponding to a first cooling target, and a second real-time temperature and a second expected temperature of the water cooling module corresponding to a second cooling target;
determining a first target refrigerating capacity of the air cooling module according to the first real-time temperature and the first expected temperature;
and determining a second target refrigerating capacity of the water cooling module according to the second real-time temperature and the second expected temperature.
Optionally, the step of setting the working modes of the air cooling module and the water cooling module according to the first target refrigerating capacity and the second target refrigerating capacity includes:
determining the opening degree of a first electronic expansion valve and the rotating speed of an inner fan according to the first target refrigerating capacity;
and determining the opening degree of the second electronic expansion valve and the flow of the circulating water pump according to the second target refrigerating capacity.
Optionally, the total refrigeration capacity of the condensing unit is set according to the first target refrigeration capacity and the second target refrigeration capacity;
taking the sum of the first target refrigerating capacity and the second target refrigerating capacity as the total refrigerating capacity of the condensing unit;
and determining the rotating speed of the compressor and the rotating speed of the external fan corresponding to the total refrigeration capacity.
In addition, in order to achieve the above purpose, the invention also provides an energy storage battery cabinet temperature control system, which comprises a battery cabinet, control equipment and the energy storage air conditioner; the battery cabinet is arranged in the cooling range of the water cooling module and the air cooling module, and the control equipment is arranged in the cooling range of the air cooling module.
The invention provides an energy storage air conditioner, an energy storage air conditioner control method and an energy storage battery cabinet temperature control system, wherein the energy storage air conditioner comprises an air cooling module, a water cooling module and a heat exchanger, the air cooling module comprises a condensing unit, and the water cooling module is connected with the condensing unit through the heat exchanger; and the condensing unit is used for discharging heat of the water cooling module and/or the air cooling module. Heat in the water cooling module is transferred to the condensing unit through the heat exchanger, so that the cooling effect of the water cooling module is realized, the power distribution requirement is reduced on the basis that the energy storage air conditioner simultaneously realizes air cooling and liquid cooling, the structural requirement on an energy storage container applying the energy storage air conditioner is reduced, and the energy storage container is convenient to apply.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a functional block diagram of an embodiment of an energy storage air conditioner according to the present invention;
FIG. 2 is a schematic diagram of a topology of the energy storage air conditioner of the present invention applied to the embodiment of FIG. 1;
FIG. 3 is a schematic diagram of an energy-storing air conditioner according to the present invention applied to the embodiment of FIG. 1;
fig. 4 is a schematic structural diagram of the temperature control system of the energy storage battery cabinet of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Reference numerals illustrate:
reference numerals Name of the name Reference numerals Name of the name
100 Air cooling module 120 Evaporation unit
110 Condensing unit 121 Evaporator
111 Condenser 122 Inner fan
112 External fan 123 First electronic expansion valve
113 Compressor 124 Air temperature and humidity sensor
114 Dry filter 200 Water cooling module
115 Internal partition 210 Cooling main pipeline
130 Second electronic expansion valve 220 Circulating water pump
300 Heat exchanger 230 Heater
T1～T2 First to second temperature sensors 240 Expansion valve
P1～P2 First to second pressure sensors
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present invention) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides an energy-storage air conditioner which is applied to a temperature control system of an energy-storage battery cabinet, and referring to fig. 1, fig. 1 is a functional block diagram of an embodiment of the energy-storage air conditioner. In this embodiment, the energy storage air conditioner includes an air cooling module 100, a water cooling module 200, and a heat exchanger 300, wherein the air cooling module 100 includes a condensing unit 110, and the water cooling module 200 is connected to the condensing unit through the heat exchanger 300; wherein:
the condensing unit 110 is configured to discharge heat of the water cooling module 200 and/or the air cooling module 100.
The air cooling module 100 realizes the reduction of the temperature of an air outlet through a heat exchanger, and outputs cold air through the inner fan 122 to realize the reduction of the temperature of a target area; after the water cooling module 200 cools down through the refrigerant, the refrigerant is output to the pipeline corresponding to the target position, so that the temperature of the target position is lowered.
It can be understood that in the prior art, the water-cooled air conditioner is provided with a radiator for cooling the refrigerant; in this embodiment, in order to simplify the related structure, a heat exchanger 300 is provided, the heat exchanger 300 is respectively connected with the air cooling module 100 and the water cooling module 200, and the air cooling module 100 achieves cooling of the water cooling module by transferring the cooling heat in the water cooling module 200 to the condensing unit 110; due to the presence of the heat exchanger 300, the water cooling module 200 does not need to be additionally provided with a radiator, so that related electrical structures can be omitted and the occupied space can be reduced. The heat exchanger 300 may be a plate heat exchanger or a double pipe heat exchanger, for example. In this embodiment, heat in the water cooling module 200 is transferred to the condensing unit 110 through the heat exchanger 300, so that the cooling effect of the water cooling module 200 is achieved, the power distribution requirement is reduced on the basis that the energy storage air conditioner simultaneously achieves air cooling and liquid cooling, the structural requirement on the energy storage container applying the energy storage air conditioner is reduced, and the application is convenient.
Further, referring to fig. 2 and 3, the condensing unit 110 further includes an evaporation unit 120, and the condensing unit 110 includes a condenser 111, an external fan 112, a compressor 113, and a dry filter 114; wherein:
the input end of the compressor 113 is connected with the output end of the evaporation unit 120, the output end of the compressor 113 is connected with the input end of the condenser 111, and the output end of the condenser 111 is connected with the input end of the evaporation unit 120 through the drying filter 114.
The condensing unit 110 is used for realizing heat output; specifically, the compressor 113 drives the gaseous refrigerant to the condenser 111, the condenser 111 dissipates heat of air, and outputs high temperature air to the external environment through the external fan 112, so that heat in the gaseous refrigerant is discharged to obtain liquid refrigerant, and the liquid refrigerant is further output to the evaporation unit 120 and/or the heat exchanger 300.
The filter drier 114 is used to remove residual moisture in the channel, prevent the capillary tube from being blocked by ice due to the residual moisture, reduce the corrosion of the moisture to the channel, and filter out impurities in the channel, such as dust, metal chips, metal oxides, etc., so as to prevent the capillary tube from being blocked by the impurities or damage the compressor.
Further, the evaporator unit 120 includes an evaporator 121, an inner fan 122, and a first electronic expansion valve 123; wherein:
the input end of the evaporator 121 is connected to the output end of the condensing unit 110 through the first electronic expansion valve 123, and the output end of the evaporator 121 is connected to the input end of the condensing unit 110.
The evaporation unit 120 is used for cooling the indoor environment; specifically, the evaporator 121 absorbs heat, transfers heat of air near the evaporator 121 to liquid refrigerant to obtain gaseous refrigerant, and then outputs low-temperature air to the indoor environment through the inner fan 122 and outputs the gaseous refrigerant to the condensing unit 110.
The first electronic expansion valve 123 is used for controlling the operation of the evaporation unit 120, when the first electronic expansion valve 123 is opened, the evaporation unit 120 is operated, and when the first electronic expansion valve 123 is closed, the evaporation unit 120 is not operated.
It should be noted that, in some embodiments, the evaporation unit 120 may further include a humidity sensor, and the indoor fan 122 is adjusted by comparing the real-time humidity of the indoor environment detected by the humidity sensor with the target humidity, so as to implement the dehumidification function; the specific dehumidification control manner may be set based on the actual application scenario, and is not limited herein.
Further, the air cooling module 100 further includes a second electronic expansion valve 130; wherein:
the input end of the first side of the heat exchanger 300 is connected to the output end of the condensing unit 110 through the second electronic expansion valve 130, and the output end of the first side of the heat exchanger 300 is connected to the input end of the condensing unit 110.
The heat exchanger 300 and the evaporation unit 120 form a parallel structure, and the heat exchanger 300 absorbs heat of the water cooling module 200 to convert the liquid refrigerant into gaseous refrigerant and outputs the gaseous refrigerant to the condensation unit 110.
The second electronic expansion valve 130 is used for controlling the operation of the heat exchanger 300, when the second electronic expansion valve 130 is opened, the heat exchanger 300 is operated, and when the second electronic expansion valve 130 is closed, the heat exchanger 300 is not operated.
Further, the water cooling module 200 includes a main cooling pipe 210, a circulating water pump 220, a heater 230, an expansion tank 240, a first temperature sensor T1, a second temperature sensor T2, a first pressure sensor P1, and a second pressure sensor P2; wherein:
the first end of the heater 230 is connected to the output end of the second side of the heat exchanger 300, the second end of the heater 230 is connected to the input end of the main cooling pipe 210, the input end of the main cooling pipe 210 is provided with the first temperature sensor T1 and the first pressure sensor P1, the output end of the main cooling pipe 210 is connected to the input end of the circulating water pump 220, the output end of the main cooling pipe 210 is provided with the second temperature sensor T2 and the second pressure sensor P2, the output end of the circulating water pump 220 is connected to the input end of the second side of the heat exchanger 300, and the expansion tank 240 is connected to the input end of the circulating water pump 220.
The coolant in the water cooling module 200 circulates in the pipeline, and the cooling main pipeline 210 is a pipeline arranged in a cooling target area; the circulating water pump 220 conveys the refrigerant with higher temperature to the heat exchanger 300, the heat exchanger 300 transfers the heat of the refrigerant to the air cooling module 100 to cool the refrigerant, the refrigerant with lower temperature is obtained, the refrigerant with lower temperature is output to the cooling main pipeline 210 to cool the target area, and the heat of the refrigerant absorbing target area is heated and flows out to the circulating water pump 220; the heater 230 is used for heating the refrigerant, so as to realize the heating requirement of the battery in a low-temperature environment.
The first temperature sensor T1 is used for detecting the temperature of the inlet water; the second temperature sensor T2 is configured to detect a temperature of the water.
The first pressure sensor P1 is used for detecting the water inlet pressure, and the second pressure sensor P2 is used for detecting the water outlet pressure;
it can be appreciated that the detected value of the temperature sensor is used to determine the cooling capacity required by the water cooling module 200, specifically, the inlet water temperature target value is set according to the actual cooling requirement, and the inlet water temperature target value and the temperature value detected by the first temperature sensor T1 are the cooling capacity required by the water cooling module 200.
The detection value of the pressure sensor is used for realizing the adjustment of the circulating water pump 220; specifically, the working water pressure is preset, a current water pressure difference value is obtained by calculating the difference value of the pressure values detected by the first pressure sensor P1 and the second pressure sensor P2, the current water pressure difference value is compared with the preset working water pressure to regulate the rotating speed of the circulating water pump 220, specifically, the current water pressure difference value is larger than the preset working water pressure, the rotating speed of the circulating water pump 220 is reduced, the current water pressure difference value is smaller than the preset working water pressure, and the rotating speed of the circulating water pump 220 is reduced; the first expansion tank 240 is used to buffer system pressure fluctuations and stabilize the pipeline pressure.
The following describes the overall implementation principle of the energy storage air conditioner:
the compressor 113 outputs the gaseous refrigerant to the condenser 111, the condenser 111 dissipates heat to obtain a liquid refrigerant, and outputs the liquid refrigerant to the evaporation unit 120 and the heat exchanger 300;
if the first electronic expansion valve 123 is opened, the evaporation unit 120 cools down through the liquid refrigerant, so as to cool down the indoor environment and realize the air cooling function;
if the second electronic expansion valve 130 is opened, the heat exchanger 300 cools the refrigerant in the water cooling module 200 by the liquid refrigerant;
the circulating water pump 220 conveys the high-temperature refrigerant to the heat exchanger 300 for cooling, and the target area where the cooling main pipeline 210 is positioned is cooled after the refrigerant is cooled, so that the water cooling function is realized.
When the first electronic expansion valve 123 and the second electronic expansion valve 130 are simultaneously opened, the energy storage air conditioner simultaneously realizes air cooling and water cooling; when the first electronic expansion valve 123 is opened and the second electronic expansion valve 130 is closed, the energy storage air conditioner realizes an air cooling function; when the first electronic expansion valve 123 is closed and the second electronic expansion valve 130 is opened, the energy storage air conditioner realizes a water cooling function.
The invention also protects an energy storage air conditioner control method, the energy storage air conditioner further comprises a controller, the energy storage air conditioner control method is applied to the controller, and the energy storage air conditioner control method comprises the following steps:
determining a first target refrigerating capacity corresponding to the air cooling module and a second target refrigerating capacity corresponding to the water cooling module;
setting working modes of the air cooling module and the water cooling module according to the first target refrigerating capacity and the second target refrigerating capacity respectively;
and setting the total refrigerating capacity of the condensing unit according to the first target refrigerating capacity and the second target refrigerating capacity.
It can be understood that, because the cooling targets of the air cooling module and the water cooling module are different, specifically, the cooling target of the air cooling module is the internal environment of the box body; the cooling target of the water cooling module is a battery cabinet; therefore, the refrigeration capacity required to be realized by the air cooling module and the water cooling module is not necessarily the same; the first target refrigerating capacity indicates the target refrigerating capacity of the air cooling module, and the second target refrigerating capacity indicates the target refrigerating capacity of the water cooling module.
It can be appreciated that, since the air cooling module and the water cooling module together realize heat discharge through the condensing unit, the total refrigerating capacity of the condensing unit needs to be determined based on the refrigerating capacities of the air cooling module and the water cooling module.
Further, the step of determining the first target refrigerating capacity corresponding to the air cooling module and the second target refrigerating capacity corresponding to the water cooling module includes:
acquiring a first real-time temperature and a first expected temperature of the air cooling module corresponding to a first cooling target, and a second real-time temperature and a second expected temperature of the water cooling module corresponding to a second cooling target;
determining a first target refrigerating capacity of the air cooling module according to the first real-time temperature and the first expected temperature;
and determining a second target refrigerating capacity of the water cooling module according to the second real-time temperature and the second expected temperature.
The first real-time temperature and the first expected temperature of the air cooling module corresponding to the first cooling target reflect the refrigeration requirement of the air cooling module, and the second real-time temperature and the second expected temperature of the water cooling module corresponding to the second cooling target reflect the refrigeration requirement of the water cooling module; therefore, the target refrigerating capacity corresponding to the air cooling module and the water cooling module can be determined through the real-time temperature and the expected temperature; the calculation of the specific target refrigerating capacity can be set based on actual application requirements, such as calculating a temperature difference between the real-time temperature and the expected temperature, and further determining the target refrigerating capacity based on a corresponding relation between the preset temperature difference and the refrigerating capacity.
Further, the step of setting the working modes of the air cooling module and the water cooling module according to the first target refrigerating capacity and the second target refrigerating capacity includes:
determining the opening degree of a first electronic expansion valve and the rotating speed of an inner fan according to the first target refrigerating capacity;
and determining the opening degree of the second electronic expansion valve and the flow of the circulating water pump according to the second target refrigerating capacity.
The amount of the refrigerant passing through the evaporator can be controlled by controlling the opening degree of the first electronic expansion valve, and the output rate of cold air can be controlled by controlling the rotating speed of the inner fan, so that the refrigerating capacity of the air cooling module can be adjusted by the opening degree of the first electronic expansion valve and the rotating speed of the inner fan, otherwise, after the first target refrigerating capacity is determined, the first target refrigerating capacity can be realized by determining the opening degree of the first electronic expansion valve and the rotating speed of the inner fan.
The amount of the refrigerant passing through the heat exchanger can be controlled by controlling the opening degree of the second electronic expansion valve, and the circulation speed of the liquid refrigerant in the pipeline can be controlled by controlling the flow rate of the circulating water pump, so that the refrigerating capacity of the water cooling module can be regulated by the opening degree of the second electronic expansion valve and the flow rate of the circulating water pump, otherwise, after the second target refrigerating capacity is determined, the second target refrigerating capacity can be realized by determining the opening degree of the second electronic expansion valve and the flow rate of the circulating water pump.
When the first target cooling capacity is 0, the evaporator is not required to operate, and similarly, when the second target cooling capacity is 0, the water cooling module is not required to operate, and the second electronic expansion valve is closed.
Further, the setting of the total refrigeration capacity of the condensing unit according to the first target refrigeration capacity and the second target refrigeration capacity;
taking the sum of the first target refrigerating capacity and the second target refrigerating capacity as the total refrigerating capacity of the condensing unit;
and determining the rotating speed of the compressor and the rotating speed of the external fan corresponding to the total refrigeration capacity.
The sum of the first target refrigerating capacity and the second target refrigerating capacity can reflect the integral refrigerating requirement of the energy storage air conditioner.
The speed of the compressor can control the speed of refrigerant circulation, and the speed of the external fan can control the speed of heat discharge, so that the total refrigerating capacity can be adjusted by controlling the speed of the compressor and the speed of the external fan.
Further, for the air cooling module, besides realizing temperature control, humidity can be controlled; it can be understood that the air cooling module cools and condenses nearby air into water drops through the evaporator, and then the water drops are discharged through the drain pipe to realize the dehumidification function; the higher the refrigerating intensity of the evaporator is, the higher the dehumidifying intensity is, so that the first control quantity of the air cooling module is influenced by the refrigerating requirement and the dehumidifying requirement at the same time; specific control of humidity can be performed by analogy with temperature control; in a specific application, the first control amount may be determined jointly in combination with the desired temperature and the desired humidity.
The embodiment can accurately control the energy storage air conditioner.
The invention also protects an energy storage battery cabinet temperature control system, which comprises a battery cabinet, control equipment and an energy storage air conditioner, wherein the structure of the energy storage air conditioner can refer to the embodiment and is not repeated herein; the battery cabinet is disposed in the cooling ranges of the water cooling module 200 and the air cooling module 100, and the control device is disposed in the cooling range of the air cooling module 100.
The control device is used for indicating the device with smaller heating value relative to the battery cabinet; based on different specific application scenarios, specific devices included in the control device are different, for example, the control device may include a converter and a transformer.
It is understood that the cooling range of the air-cooling module 100 refers to an indoor area communicating with the evaporation unit 120 in the air-cooling module 100; the cooling range of the water cooling module 200 refers to an area where the cooling main pipe 210 is disposed in the water cooling module 200.
Because the heat productivity of the battery cabinet is large, the water cooling module 200 and the air cooling module 100 cool the battery cabinet at the same time, so that the temperature control of the battery cabinet is ensured;
because the heating value of the control equipment is relatively small, the structure of the energy storage air conditioner can be reduced on the basis of ensuring the temperature of the control equipment by only realizing cooling through the air cooling module 100.
It should be noted that, because the energy storage battery cabinet temperature control system of the embodiment adopts the technical scheme of the energy storage air conditioner, the energy storage battery cabinet temperature control system has all the beneficial effects of the energy storage air conditioner.
Further, referring to fig. 4, the water cooling module 200 includes a main cooling pipe 210, and the main cooling pipe 210 is disposed in the cabinet body of the battery cabinet.
It can be appreciated that the cooling range of the water cooling module 200 is smaller, and in general, heat dissipation is achieved by contacting with a heat dissipation target; the battery is arranged in the battery cabinet, the cooling main pipeline 210 of the water cooling module 200 is arranged in the cabinet body of the battery cabinet, and when the refrigerant flows through the cooling main pipeline 210, the heat of the battery in the battery cabinet is absorbed to cool the battery.
Further, the temperature control system of the energy storage battery cabinet further comprises a box body, the battery cabinet and the control equipment are arranged in the box body, the evaporation unit 120 in the air cooling module 100 is arranged in the box body, and the condensation unit 110 of the air cooling module 100 is arranged outside the box body.
The energy storage air conditioner is provided with the internal partition plate 115, the internal structure of the energy storage air conditioner is divided by the internal partition plate 115, the condensing unit 110 is mainly isolated, the condensing unit 110 is communicated with the external environment of the box, and the evaporating unit 120 and the water cooling module 200 are communicated with the internal environment of the box.
The inside of the box body is the cooling range of the air cooling module 100; it should be noted that, since the control device only implements cooling by the air cooling module 100, when the control device and the battery cabinet are set, the control device may be set closer to the air outlet of the air cooling module 100, so as to ensure the cooling effect for the control device.
The air cooling module 100 cools the internal environment of the box body to realize cooling of the control equipment and the battery, and the refrigerant in the water cooling module 200 cools the battery in the battery cabinet to realize cooling of the battery; the heat of the air cooling module 100 and the water cooling module 200 is uniformly discharged to the outside of the cabinet through the condensing unit 110.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or system that comprises the element. The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (10)

1. The energy storage air conditioner is characterized by comprising an air cooling module, a water cooling module and a heat exchanger, wherein the air cooling module comprises a condensing unit, and the water cooling module is connected with the condensing unit through the heat exchanger;
and the condensing unit is used for discharging heat of the water cooling module and/or the air cooling module.
2. The energy storage air conditioner of claim 1, further comprising an evaporation unit, wherein the condensation unit comprises a condenser, an external fan, a compressor, and a dry filter; wherein:
the input end of the compressor is connected with the output end of the evaporation unit, the output end of the compressor is connected with the input end of the condenser, and the output end of the condenser is connected with the input end of the evaporation unit through the drying filter.
3. The energy-storage air conditioner of claim 1, further comprising an evaporation unit comprising an evaporator, an internal fan, and a first electronic expansion valve; wherein:
the input end of the evaporator is connected with the output end of the condensing unit through the first electronic expansion valve, and the output end of the evaporator is connected with the input end of the condensing unit.
4. The energy storage air conditioner of claim 3, wherein the air cooling module further comprises a second electronic expansion valve; wherein:
the input end of the first side of the heat exchanger is connected with the output end of the condensing unit through the second electronic expansion valve, and the output end of the first side of the heat exchanger is connected with the input end of the condensing unit.
5. The energy storage air conditioner of claim 1, wherein the water cooling module comprises a main cooling pipe, a circulating water pump, a heater, an expansion tank, a first temperature sensor, a second temperature sensor, a first pressure sensor, and a second pressure sensor; wherein:
the first end of heater with the output of the second side of heat exchanger, the second end of heater with the input of cooling trunk line is connected, the input of cooling trunk line sets up first temperature sensor with first pressure sensor, the output of cooling trunk line with circulating water pump's input is connected, the output of cooling trunk line sets up second temperature sensor with second pressure sensor, circulating water pump's output with the input of the second side of heat exchanger is connected, the expansion tank with circulating water pump's input is connected.
6. The energy storage air conditioner control method according to any one of claims 1 to 5, further comprising a controller to which the energy storage air conditioner control method is applied, the energy storage air conditioner control method comprising:
determining a first target refrigerating capacity corresponding to the air cooling module and a second target refrigerating capacity corresponding to the water cooling module;
setting working modes of the air cooling module and the water cooling module according to the first target refrigerating capacity and the second target refrigerating capacity respectively;
and setting the total refrigerating capacity of the condensing unit according to the first target refrigerating capacity and the second target refrigerating capacity.
7. The method of controlling an energy storage air conditioner as set forth in claim 6, wherein the step of determining a first target cooling capacity corresponding to the air cooling module and a second target cooling capacity corresponding to the water cooling module includes:
acquiring a first real-time temperature and a first expected temperature of the air cooling module corresponding to a first cooling target, and a second real-time temperature and a second expected temperature of the water cooling module corresponding to a second cooling target;
determining a first target refrigerating capacity of the air cooling module according to the first real-time temperature and the first expected temperature;
and determining a second target refrigerating capacity of the water cooling module according to the second real-time temperature and the second expected temperature.
8. The method of controlling an energy storage air conditioner as set forth in claim 6, wherein the step of setting the operation modes of the air cooling module and the water cooling module according to the first target cooling capacity and the second target cooling capacity includes:
determining the opening degree of a first electronic expansion valve and the rotating speed of an inner fan according to the first target refrigerating capacity;
and determining the opening degree of the second electronic expansion valve and the flow of the circulating water pump according to the second target refrigerating capacity.
9. The energy storage air conditioner control method as set forth in claim 6, wherein said setting of a total refrigerating capacity of a condensing unit is based on said first target refrigerating capacity and said second target refrigerating capacity;
taking the sum of the first target refrigerating capacity and the second target refrigerating capacity as the total refrigerating capacity of the condensing unit;
and determining the rotating speed of the compressor and the rotating speed of the external fan corresponding to the total refrigeration capacity.
10. An energy storage battery cabinet temperature control system, characterized in that the energy storage battery cabinet temperature control system comprises a battery cabinet, control equipment and the energy storage air conditioner according to any one of claims 1-5; the battery cabinet is arranged in the cooling range of the water cooling module and the air cooling module, and the control equipment is arranged in the cooling range of the air cooling module.
CN202310756261.5A 2023-06-25 2023-06-25 Energy storage air conditioner, energy storage air conditioner control method and energy storage battery cabinet temperature control system Pending CN117039240A (en)

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Application Number Priority Date Filing Date Title
CN202310756261.5A CN117039240A (en) 2023-06-25 2023-06-25 Energy storage air conditioner, energy storage air conditioner control method and energy storage battery cabinet temperature control system

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Application Number Priority Date Filing Date Title
CN202310756261.5A CN117039240A (en) 2023-06-25 2023-06-25 Energy storage air conditioner, energy storage air conditioner control method and energy storage battery cabinet temperature control system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117438700A (en) * 2023-12-21 2024-01-23 常州博瑞电力自动化设备有限公司 Efficient energy-saving split type water chiller system and control method thereof
CN118572259A (en) * 2024-08-01 2024-08-30 长安绿电科技有限公司 Power grid level energy storage device and temperature adjusting method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117438700A (en) * 2023-12-21 2024-01-23 常州博瑞电力自动化设备有限公司 Efficient energy-saving split type water chiller system and control method thereof
CN117438700B (en) * 2023-12-21 2024-03-29 常州博瑞电力自动化设备有限公司 Efficient energy-saving split type water chiller system and control method thereof
CN118572259A (en) * 2024-08-01 2024-08-30 长安绿电科技有限公司 Power grid level energy storage device and temperature adjusting method

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