Energy-storage constant-temperature constant-humidity multi-mode energy-saving air conditioning system

Abstract

The utility model provides an energy-storage constant-temperature constant-humidity multi-mode energy-saving air conditioning system which comprises an active liquid cooling circulation assembly and an active air cooling circulation assembly. The active air cooling circulation assembly comprises a shared fluorine water air cooling heat exchanger. The active air cooling circulation assembly further comprises a first air cooling heat exchanger. The output end of the first air cooling heat exchanger is connected with the energy storage container; the active liquid cooling circulation assembly further comprises a first liquid cooling heat exchanger used for being in heat exchange connection with the battery pack. The fluorine water air-cooled heat exchanger is also directly connected with the battery pack; the battery pack is further connected with the deep well. Through cooperative operation of various circulating assemblies and heat exchange mechanisms, the obvious energy-saving advantage is shown; under different environmental conditions and requirements of the energy storage battery, the system can flexibly switch various refrigerating and heating modes; when the temperature of the battery pack is relatively low, passive water cooling and passive air cooling are started, so that cooling and consumption reduction can be realized; the dual-mode cooling of active water cooling and active air cooling not only can improve the cooling efficiency, but also can heat the battery pack by reversely driving the refrigerant.

Description

Technical Field

[0001] This application relates to the field of temperature control technology for energy storage equipment, specifically to an energy storage constant temperature and humidity multi-mode energy-saving air conditioning system. Background Technology

[0002] The energy storage industry is dominated by lithium-ion batteries. A storage container is formed by connecting several lithium batteries in series and parallel and placing them inside, thus storing or releasing electrical energy. However, lithium batteries have stringent operating temperature requirements, generally needing to be stable between 15 and 35°C and between 35% and 70% humidity. This necessitates the installation of an energy storage temperature control system to regulate the environment of the lithium batteries inside the storage container, ensuring they operate in an ideal environment.

[0003] In existing energy storage temperature and humidity control systems, cooling, heating, and dehumidification of lithium batteries within energy storage containers are required for different outdoor environments. First, cooling is typically achieved using compressor-based air-cooled or compressor-based liquid-cooled air conditioning systems. Liquid-cooled systems usually employ plate heat exchangers and liquid-cooled pipes for liquid cooling, while air-cooled systems typically use finned evaporator coils and fans for air cooling. Second, heating is usually achieved by heating the liquid-cooled pipes with electric heaters to heat the lithium batteries, but the heating effect is limited and power consumption is high. Third, dehumidification is usually achieved by installing a separate semiconductor dehumidifier or compressor dehumidifier within the battery compartment. Semiconductor dehumidifiers have poor dehumidification efficiency, while compressor dehumidifiers are bulky and space-consuming. Therefore, these problems urgently need to be addressed. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the existing technology, it is desirable to provide an energy-saving air conditioning system with energy storage, constant temperature and humidity, and multiple modes.

[0005] This application provides an energy-storage, constant temperature and humidity, multi-mode energy-saving air conditioning system, including...

[0006] The compressor is connected to both an active liquid cooling circulation assembly and an active air cooling circulation assembly.

[0007] The active liquid cooling circulation assembly and the active air cooling circulation assembly include a shared fluorine-water air-cooled heat exchanger.

[0008] The active air-cooled circulation assembly also includes a first air-cooled heat exchanger;

[0009] The first air-cooled heat exchanger is equipped with a first fan, the output of which is connected to the energy storage container.

[0010] The active liquid cooling circulation assembly also includes a first liquid cooling heat exchanger for heat exchange connection with the battery pack;

[0011] The fluorine-water air-cooled heat exchanger is also directly connected to the battery pack to form a passive air-cooled circulation mechanism.

[0012] The battery pack is also connected to a deep water well to form a passive liquid cooling circulation mechanism.

[0013] Furthermore,

[0014] The active air-cooled circulation assembly also includes a first four-way valve;

[0015] The first end of the first four-way valve is connected to the output end of the compressor, the second end is connected to the fluorine-water air-cooled heat exchanger, the third end is connected to the input end of the compressor, and the fourth end is connected to the first air-cooled heat exchanger.

[0016] The first and third ends are switchably connected to the second and fourth ends to switch the flow direction of the refrigerant within the active air-cooled circulation assembly.

[0017] Furthermore,

[0018] The active air-cooled circulation assembly also includes a first electronic expansion valve;

[0019] One end of the first electronic expansion valve is connected to the fluorine-water air-cooled heat exchanger, and the other end is connected to the first air-cooled heat exchanger.

[0020] Furthermore,

[0021] The active liquid cooling circulation assembly also includes a second four-way valve;

[0022] The fifth end of the second four-way valve is connected to the output end of the compressor, the sixth end is connected to the fluorine-water air-cooled heat exchanger, the seventh end is connected to the input end of the compressor, and the eighth end is connected to the first liquid-cooled heat exchanger.

[0023] The fifth and seventh ends are switchably connected to the sixth and eighth ends to switch the flow direction of the refrigerant in the active liquid cooling circulation assembly.

[0024] Furthermore,

[0025] The active liquid cooling circulation assembly also includes a second electronic expansion valve;

[0026] One end of the second electronic expansion valve is connected to the fluorine-water air-cooled heat exchanger, and the other end is connected to the first liquid-cooled heat exchanger.

[0027] Furthermore,

[0028] The internal components of the fluorine-water air-cooled heat exchanger are respectively equipped with a second fan, water pipes, and fluorine pipes;

[0029] The water pipes are connected to the battery pack and are used to cool the cooling water.

[0030] The fluorine pipeline is connected to the active air-cooled circulation assembly and the active liquid-cooled circulation assembly respectively, and is used to cool the refrigerant.

[0031] Furthermore,

[0032] The battery pack is equipped with a first three-way valve and a second three-way valve at its two ends, respectively.

[0033] The first three-way valve and the second three-way valve are also connected to the first liquid-cooled heat exchanger and the deep water well, respectively, for switching the refrigeration mode;

[0034] A first water pump is also installed between the second three-way valve and the deep well to drive water circulation.

[0035] Furthermore,

[0036] The deep water well is connected to the first three-way valve and the second three-way valve via a second liquid-cooled heat exchanger.

[0037] A second water pump is also provided between the second liquid-cooled heat exchanger and the deep water well to drive water circulation.

[0038] Furthermore,

[0039] A third three-way valve and a fourth three-way valve are respectively provided between the first three-way valve and the second three-way valve and the first liquid-cooled heat exchanger;

[0040] The third three-way valve is connected to the first three-way valve, and a third water pump is also provided between them.

[0041] Furthermore,

[0042] The fluorine-water air-cooled heat exchanger is connected to the battery pack via the third three-way valve and the fourth three-way valve.

[0043] The advantages and positive effects of this application are:

[0044] This technical solution demonstrates significant energy-saving advantages through the coordinated operation of multiple circulation components and heat exchange mechanisms. Under different environmental conditions and energy storage battery requirements, the system can flexibly switch between various cooling and heating modes. When the battery pack temperature is low, passive water cooling and passive air cooling are activated, meeting cooling requirements while reducing energy consumption. The dual-mode cooling of active water cooling and active air cooling not only improves cooling efficiency but also drives the refrigerant in reverse to raise the battery pack temperature, effectively ensuring that the battery pack's ambient temperature remains within the set range. Simultaneously, a dual evaporation system is formed between the compressor and the active liquid cooling circulation components and the active air cooling circulation components. This allows for direct cooling of the battery pack through the active liquid cooling circulation components and low-temperature dehumidification of the container's internal space through the active air cooling circulation components, effectively ensuring the battery's operational stability. Attached Figure Description

[0045] Figure 1 A schematic diagram of the structure of the energy storage constant temperature and humidity multi-mode energy-saving air conditioning system provided in the embodiments of this application.

[0046] The text labels in the diagram represent: 100-compressor; 200-fluorine-water air-cooled heat exchanger; 300-first air-cooled heat exchanger; 310-first four-way valve; 320-first electronic expansion valve; 400-first liquid-cooled heat exchanger; 410-second four-way valve; 420-second electronic expansion valve; 500-energy storage container; 510-battery pack; 520-first three-way valve; 530-second three-way valve; 531-first water pump; 540-third three-way valve; 550-fourth three-way valve; 560-third water pump; 600-deep water well; 610-second liquid-cooled heat exchanger; 620-second water pump. Detailed Implementation

[0047] To enable those skilled in the art to better understand the technical solution of this application, the application will be described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory, and should not be used to limit the scope of protection of this application.

[0048] Please refer to Figure 1 This embodiment provides an energy-storage, constant-temperature and constant-humidity, multi-mode energy-saving air conditioning system, including a compressor 100, which is connected to an active liquid-cooled circulation component and an active air-cooled circulation component. The active liquid-cooled circulation component and the active air-cooled circulation component include a shared fluorine-water air-cooled heat exchanger 200. The active air-cooled circulation component also includes a first air-cooled heat exchanger 300. The first air-cooled heat exchanger 300 is equipped with a first fan, and its output end is connected to an energy storage container 500. The active liquid-cooled circulation component also includes a first liquid-cooled heat exchanger 400 for heat exchange connection with a battery pack 510. The fluorine-water air-cooled heat exchanger 200 is also directly connected to the battery pack 510 to form a passive air-cooled circulation mechanism. The battery pack 510 is also connected to a deep water well 600 to form a passive liquid-cooled circulation mechanism.

[0049] In this embodiment, the compressor 100, as the core power component of the entire system, is connected to the active liquid cooling circulation component and the active air cooling circulation component respectively, providing power for the circulation of refrigerant and promoting the transfer of heat between different components.

[0050] In this embodiment, the passive air-cooling circulation mechanism and the passive liquid-cooling circulation mechanism are suitable for operating conditions where the outdoor temperature is low and the battery pack 510 temperature is low, thereby meeting the cooling requirements of the battery pack 510 and effectively reducing energy consumption; the active air-cooling circulation component and the active liquid-cooling circulation component can not only meet the cooling requirements of the battery pack 510, but also control the temperature of the battery pack 510 by reversing the refrigerant when the temperature is too low, thereby keeping the battery pack 510 always within the specified temperature range.

[0051] In a preferred embodiment, the active air-cooled circulation assembly further includes a first four-way valve 310; the first end of the first four-way valve 310 is connected to the output end of the compressor 100, the second end is connected to the fluorine-water air-cooled heat exchanger 200, the third end is connected to the input end of the compressor 100, and the fourth end is connected to the first air-cooled heat exchanger 300; the first and third ends are switchably connected to the second and fourth ends to switch the flow direction of the refrigerant in the active air-cooled circulation assembly.

[0052] In a preferred embodiment, the active air-cooled circulation assembly further includes a first electronic expansion valve 320; one end of the first electronic expansion valve 320 is connected to the fluorine-water air-cooled heat exchanger 200, and the other end is connected to the first air-cooled heat exchanger 300.

[0053] In this embodiment, the first four-way valve 310 plays a key switching role in the active air-cooled circulation assembly. By switching the connection state of the first four-way valve 310, the flow direction of the refrigerant in the active air-cooled circulation assembly can be changed, thereby realizing the switching between cooling and heating modes.

[0054] In this embodiment, in the cooling mode, the refrigerant is output from the compressor 100, flows through the first four-way valve 310 to the fluorine-water air-cooled heat exchanger 200 for cooling, and then, when passing through the first electronic expansion valve 320, the refrigerant pressure drops sharply due to the throttling effect, changing from a high-temperature, high-pressure gas to a low-temperature, low-pressure gas-liquid mixture. Subsequently, the refrigerant enters the first air-cooled heat exchanger 300, where it absorbs heat from the surrounding air or other media and rapidly evaporates and vaporizes, thereby achieving a cooling effect on the environment. Because the first air-cooled heat exchanger 300 is equipped with a first fan, it can effectively blow cooling air into the energy storage container 500, thereby achieving a cooling effect.

[0055] In this embodiment, in heating mode, the refrigerant is output from the compressor 100 and directly enters the first air-cooled heat exchanger 300. At this time, the refrigerant is in a high temperature and high pressure state and will release a large amount of heat. With the help of the first fan, the heating effect can be achieved.

[0056] In a preferred embodiment, the active liquid cooling circulation assembly further includes a second four-way valve 410; the fifth end of the second four-way valve 410 is connected to the output end of the compressor 100, the sixth end is connected to the fluorine-water air-cooled heat exchanger 200, the seventh end is connected to the input end of the compressor 100, and the eighth end is connected to the first liquid cooling heat exchanger 400; the fifth and seventh ends are switchably connected to the sixth and eighth ends to switch the flow direction of the refrigerant in the active liquid cooling circulation assembly.

[0057] In a preferred embodiment, the active liquid cooling circulation assembly further includes a second electronic expansion valve 420; one end of the second electronic expansion valve 420 is connected to the fluorine-water air-cooled heat exchanger 200, and the other end is connected to the first liquid cooling heat exchanger 400.

[0058] In this embodiment, in the active liquid cooling circulation assembly, the first liquid cooling heat exchanger 400 is used to connect with the battery pack 510 for heat exchange. The cooling water connected to the battery pack 510 first exchanges heat with the refrigerant in the first liquid cooling heat exchanger 400, and then exchanges heat with the battery pack 510, thereby forming temperature control.

[0059] In this embodiment, the fifth end of the second four-way valve 410 is connected to the output end of the compressor 100, the sixth end is connected to the fluorine-water air-cooled heat exchanger 200, the seventh end is connected to the input end of the compressor 100, and the eighth end is connected to the first liquid-cooled heat exchanger 400. Similar to the first four-way valve 310, the second four-way valve 410 can switch the connection state to change the flow direction of the refrigerant in the active liquid-cooled circulation component, thereby realizing the cooling or heating operation of the battery pack 510.

[0060] In a preferred embodiment, the fluorine-water air-cooled heat exchanger 200 is internally equipped with a second fan, a water pipe, and a fluorine pipe; the water pipe is connected to the battery pack 510 and is used to cool the cooling water; the fluorine pipe is connected to the active air-cooled circulation assembly and the active liquid-cooled circulation assembly respectively and is used to cool the refrigerant.

[0061] In this embodiment, the fluorine-water air-cooled heat exchanger 200 is internally equipped with a second fan, as well as water pipes and fluorine pipes. The water pipes are connected to the battery pack 510. When the cooling water flows through the battery pack 510, it can remove the heat generated by the battery pack 510, thereby cooling the battery pack 510. When the water flows through the fluorine-water air-cooled heat exchanger 200, the second fan can reduce the heat of the cooling water, thereby ensuring that the cooling water can continuously cool the battery pack 510. The fluorine pipes are connected to the active air-cooling circulation component and the active liquid-cooling circulation component, respectively, for cooling the refrigerant.

[0062] In a preferred embodiment, the battery pack 510 is provided with a first three-way valve 520 and a second three-way valve 530 at both ends; the first three-way valve 520 and the second three-way valve 530 are also connected to the first liquid-cooled heat exchanger 400 and the deep water well 600 respectively, for switching the cooling mode; a first water pump 531 is also provided between the second three-way valve 530 and the deep water well 600 for driving water circulation.

[0063] In a preferred embodiment, the deep water well 600 is connected to the first three-way valve 520 and the second three-way valve 530 via a second liquid-cooled heat exchanger 610; a second water pump 620 is also provided between the second liquid-cooled heat exchanger 610 and the deep water well 600 for driving water circulation.

[0064] In this embodiment, the battery pack 510 and the deep well 600 are indirectly connected through the second liquid-cooled heat exchanger 610, which can effectively prevent the cooling water from being contaminated, thereby ensuring the stability of the cooling system of the battery pack 510.

[0065] In a preferred embodiment, a third three-way valve 540 and a fourth three-way valve 550 are respectively provided between the first three-way valve 520 and the second three-way valve 530 and the first liquid-cooled heat exchanger 400; the third three-way valve 540 is connected to the first three-way valve 520, and a third water pump 560 is also provided between them.

[0066] In a preferred embodiment, the fluorine-water air-cooled heat exchanger 200 is connected to the battery pack 510 via the third three-way valve 540 and the fourth three-way valve 550.

[0067] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. An energy storage constant temperature and humidity multi-mode energy saving air conditioning system, characterized in that, The compressor (100) is connected with an active liquid cooling cycle assembly and an active air cooling cycle assembly, respectively; The active liquid cooling cycle assembly and the active air cooling cycle assembly comprise a shared fluorine-water air cooling heat exchanger (200); The active air cooling cycle assembly further comprises a first air cooling heat exchanger (300); The first air cooling heat exchanger (300) is provided with a first fan, and an output end is connected with an energy storage container (500); The active liquid cooling cycle assembly further comprises a first liquid cooling heat exchanger (400) for heat exchange connection with a battery pack (510); The fluorine-water air cooling heat exchanger (200) is directly connected with the battery pack (510) to form a passive air cooling cycle mechanism; The battery pack (510) is further connected with a deep well (600) to form a passive liquid cooling cycle mechanism.

2. The energy storage constant-temperature and constant-humidity multi-mode energy-saving air conditioning system according to claim 1, wherein The active air cooling cycle assembly further comprises a first four-way valve (310); A first end of the first four-way valve (310) is connected with an output end of the compressor (100), a second end is connected with the fluorine-water air cooling heat exchanger (200), a third end is connected with an input end of the compressor (100), and a fourth end is connected with the first air cooling heat exchanger (300); The first end and the third end are switchably connected with the second end and the fourth end to switch the flow direction of refrigerant in the active air cooling cycle assembly.

3. The energy storage constant-temperature and constant-humidity multi-mode energy-saving air conditioning system according to claim 2, wherein The active air cooling cycle assembly further comprises a first electronic expansion valve (320); One end of the first electronic expansion valve (320) is connected with the fluorine-water air cooling heat exchanger (200), and the other end is connected with the first air cooling heat exchanger (300).

4. The energy storage constant-temperature and constant-humidity multi-mode energy-saving air conditioning system according to claim 1, wherein The active liquid cooling cycle assembly further comprises a second four-way valve (410); A fifth end of the second four-way valve (410) is connected with an output end of the compressor (100), a sixth end is connected with the fluorine-water air cooling heat exchanger (200), a seventh end is connected with an input end of the compressor (100), and an eighth end is connected with the first liquid cooling heat exchanger (400); The fifth end and the seventh end are switchably connected with the sixth end and the eighth end to switch the flow direction of refrigerant in the active liquid cooling cycle assembly.

5. The energy storage constant-temperature and constant-humidity multi-mode energy-saving air conditioning system according to claim 4, wherein The active liquid cooling cycle assembly further comprises a second electronic expansion valve (420); One end of the second electronic expansion valve (420) is connected with the fluorine-water air cooling heat exchanger (200), and the other end is connected with the first liquid cooling heat exchanger (400).

6. The energy storage constant-temperature and constant-humidity multi-mode energy-saving air conditioning system according to claim 1, wherein The fluorine-water air cooling heat exchanger (200) is provided with a second fan, a water pipeline and a fluorine pipeline inside, respectively; ​ The water pipeline is connected with the battery pack (510) and used for cooling the cooling water. The fluorine pipeline is connected with the active air-cooled circulation assembly and the active liquid-cooled circulation assembly respectively and used for cooling the refrigerant.

7. The energy storage constant temperature and humidity multi-mode energy-saving air conditioning system according to claim 1, characterized in that, Both ends of the battery pack (510) are respectively provided with a first three-way valve (520) and a second three-way valve (530). The first three-way valve (520) and the second three-way valve (530) are also respectively connected with the first liquid-cooled heat exchanger (400) and the deep well (600) and used for switching the refrigeration mode. The second three-way valve (530) and the deep well (600) are also provided with a first water pump (531) and used for driving the water circulation.

8. The energy storage constant temperature and humidity multi-mode energy-saving air conditioning system according to claim 7, characterized in that, The deep well (600) is connected with the first three-way valve (520) and the second three-way valve (530) through a second liquid-cooled heat exchanger (610). The second liquid-cooled heat exchanger (610) and the deep well (600) are also provided with a second water pump (620) and used for driving the water circulation.

9. The energy storage constant temperature and humidity multi-mode energy-saving air conditioning system according to claim 7, characterized in that, The first three-way valve (520) and the second three-way valve (530) are also respectively provided with a third three-way valve (540) and a fourth three-way valve (550) between the first liquid-cooled heat exchanger (400). The third three-way valve (540) is connected with the first three-way valve (520) and also provided with a third water pump (560) therebetween.

10. The energy storage constant temperature and humidity multi-mode energy-saving air conditioning system according to claim 9, characterized in that, The fluorine water air-cooled heat exchanger (200) is connected with the battery pack (510) through the third three-way valve (540) and the fourth three-way valve (550).

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