Novel efficient energy storage air-cooled air conditioning system

Abstract

The utility model discloses a novel efficient energy storage air cooling air conditioning system which comprises a compressor, a three-phase heat exchanger I, a three-phase heat exchanger II, an outer fan, an inner fan, a capillary tube, a water pump, an expansion kettle, a drying tank and an air bellow. A first cavity and a second cavity which are independent are formed in the air bellow, an inner fan and a three-phase heat exchanger II are arranged in the first cavity, and an outer fan and a three-phase heat exchanger I are arranged in the first cavity; on the basis, a refrigerant circulation system and a cooling water circulation system are constructed. According to the air cooling system, the refrigerant circulation system or the cooling water circulation system can be selected to work in time according to the temperature of the external environment and the return air temperature of the air bellow, so that the heat dissipation requirement of the air cooling system under the condition that the environment temperature is high can be met, and meanwhile the use frequency of the compressor is reduced when the environment temperature is low; power consumption is reduced and system efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy storage systems, and in particular to a novel high-efficiency energy storage air-cooling air conditioning system. Background Art

[0002] With the development of technology and environmental protection needs around the world, new energy technologies are becoming more and more popular, attracting widespread attention in the fields of transportation, electricity, photovoltaics, wind power, etc. Relevant industries around the world have conducted extensive research on the application of power batteries in this field. Through energy storage products, the working efficiency of the power grid can be better adjusted to achieve composite application values ​​such as peak shaving, smoothing new energy fluctuations, and energy management.

[0003] As the core component of the energy storage system, the battery module will shorten the battery life if the temperature inside the lithium-ion battery pack is too high. Under low temperature conditions, the discharge capacity will be significantly reduced. The uneven temperature inside the battery pack will lead to uneven distribution of lithium battery capacity, shortening the overall battery pack service life.

[0004] In order to reduce the maximum temperature of the battery and extend the service life of the battery cell, the battery temperature can be reduced by convection of the cooled gas through the heat dissipation structure through the refrigeration air conditioner. Figure 1 The core components of the traditional air-cooled air conditioning system include compressors, condensers, evaporators, blowers, and expansion valves. The air is cooled by the air conditioning system and passes through the battery cells and heat dissipation structure to achieve the purpose of cooling. Figure 2 and attached Figure 3 The battery modules are arranged in the cabinet, and a horizontal air-cooled air conditioner is installed on the top. The blower delivers cold air to each battery module through the air duct for cooling, and then draws the air back to the evaporator from the top for cooling.

[0005] The current roof-mounted horizontal energy storage air-cooled air-conditioning structure has a relatively tight space and the system structure is extremely compact. It is necessary to arrange a condenser and radiator in a smaller space, which will cause the system resistance to increase significantly, while reducing the cooling capacity under high temperature conditions and reducing the thermal management performance of the system.

[0006] In addition, due to considerations such as dust prevention and insulation, the battery system is in a closed system and is cooled only by air conditioning. When the compressor is not started or damaged, the battery system cannot be cooled, which means that the compressor needs to be used for cooling throughout the year. Especially in winter, the energy storage system emits a lot of heat during the charging and discharging process, and the compressor still needs to be started for cooling, which results in high power consumption and low efficiency of the energy storage system throughout the year, increasing the cost of using the air cooling system and reducing the user's benefits. Utility Model Content

[0007] In order to solve the deficiencies of the above technical solutions, the purpose of the utility model is to provide a new type of high-efficiency energy storage air-cooled air-conditioning system to meet the cooling, temperature reduction and high-efficiency thermal management requirements of the energy storage system, and to meet the temperature uniformity requirements of the battery cells through a heat dissipation structure with air-cooled fins, and to meet the heat dissipation requirements of the air-cooled system under conditions of high ambient temperature, while meeting the requirements of reducing the frequency of use of the compressor when the ambient temperature is low, reducing power consumption and improving system efficiency.

[0008] The purpose of the utility model is achieved through the following technical solutions.

[0009] A new type of high-efficiency energy storage air-cooled air conditioning system, comprising: a compressor, a three-phase heat exchanger I, a three-phase heat exchanger II, an external fan, an internal fan, a capillary tube, a water pump, an expansion kettle, a drying tank and a bellows;

[0010] The outlet of the compressor is connected to the liquid inlet of the refrigerant chamber of the three-phase heat exchanger I, the liquid outlet of the refrigerant chamber of the three-phase heat exchanger I is connected to the inlet of the drying tank, the outlet of the drying tank is connected to the inlet of the capillary tube, the outlet of the capillary tube is connected to the liquid inlet of the refrigerant chamber of the three-phase heat exchanger II, and the liquid outlet of the refrigerant chamber of the three-phase heat exchanger II is connected to the inlet of the compressor, forming a refrigerant circulation system;

[0011] The water outlet of the water pump is connected to the water inlet of the coolant water chamber of the three-phase heat exchanger I, and the water outlet of the water pump and the water inlet of the coolant water chamber of the three-phase heat exchanger I are also connected to the expansion kettle, the water outlet of the coolant water chamber of the three-phase heat exchanger I is connected to the water inlet of the coolant water chamber of the three-phase heat exchanger II through a pipeline, and the water outlet of the coolant water chamber of the three-phase heat exchanger II is connected to the water inlet of the water pump, forming a coolant circulation system;

[0012] The interior of the bellows is provided with an independent first cavity and a second cavity, the inner fan and the three-phase heat exchanger II are arranged in the first cavity, wherein the three-phase heat exchanger II is arranged obliquely in the first cavity, and the inner fan is arranged on the side of the three-phase heat exchanger II; a circulating air inlet and a circulating air outlet connected to the interior of the first cavity are arranged on the bottom surface of the bellows, and the circulating air inlet and the circulating air outlet are respectively located on both sides of the three-phase heat exchanger II; the outer fan and the three-phase heat exchanger I are arranged in the second cavity of the bellows, wherein the three-phase heat exchanger I is arranged obliquely in the second cavity, and the outer fan is arranged on the side of the three-phase heat exchanger I; and an air inlet and an air outlet connected to the interior of the second cavity are arranged on two opposite sides of the bellows along the second cavity.

[0013] In the above technical scheme, the three-phase heat exchanger I and the three-phase heat exchanger II have the same structure, and both adopt a three-phase heat exchanger structure, which includes: a refrigerant chamber, a coolant water chamber and a heat dissipation fin, wherein the coolant water chamber includes a first coolant water chamber body, a second coolant water chamber body and an intermediate coolant connecting pipe, the first coolant water chamber body and the second coolant water chamber body are both rectangular tubes, which are parallel to each other and spaced apart, the number of the intermediate coolant connecting pipes is multiple and parallel to each other and spaced apart, the two ends of each intermediate coolant connecting pipe are respectively connected to the first coolant water chamber body and the second coolant water chamber body, and a water inlet is set on the first coolant water chamber body, and a water outlet is set on the second coolant water chamber body; the refrigerant chamber includes a A refrigerant chamber body, a second refrigerant chamber body and an intermediate refrigerant connecting pipe, the first refrigerant chamber body is embedded in the first cooling liquid water chamber body, the second refrigerant chamber body is embedded in the second cooling liquid water chamber body, the intermediate refrigerant connecting pipes are multiple in number and are arranged side by side with the intermediate cooling liquid connecting pipes, the two ends of each intermediate refrigerant connecting pipe are respectively connected to the first refrigerant chamber body and the second refrigerant chamber body, and partitions are arranged in the first refrigerant chamber body and the second refrigerant chamber body to form a structure in which the intermediate refrigerant connecting pipes are connected in series in sequence, and a liquid inlet and a liquid outlet are arranged on the first refrigerant chamber body; the heat dissipation fins are arranged on the intermediate cooling liquid connecting pipe and the intermediate refrigerant connecting pipe, and can dissipate heat to the intermediate cooling liquid connecting pipe and the intermediate refrigerant connecting pipe.

[0014] In the above technical solution, the intermediate refrigerant connecting pipe will pass through the pipe wall of the coolant water chamber body, and solder will be filled at the penetration point for sealing to prevent leakage of the coolant water chamber body.

[0015] In the above technical solution, a first temperature detection sensor is provided at the circulating air inlet in the first cavity, for detecting the return air temperature of the three-phase heat exchanger II.

[0016] In the above technical solution, the bellows is a rectangular box.

[0017] In the above technical solution, a partition is arranged inside the bellows, so that two independent first cavities and second cavities are formed inside the bellows.

[0018] In the above technical solution, the first cavity and the second cavity are both rectangular.

[0019] The advantages and beneficial effects of the utility model are:

[0020] The three-phase heat exchanger structure design of the utility model can realize the arrangement of the heat exchanger in a relatively small space while having the capabilities of refrigerant heat exchange, coolant heat exchange and wind heat exchange.

[0021] The utility model forms two independent first and second cavities inside an overhead wind box, and an inner fan and a three-phase heat exchanger II are arranged in the first cavity, and an outer fan and a three-phase heat exchanger I are arranged in the second cavity; and based on this, a refrigerant circulation system (i.e., a compressor-based air conditioning system) and a cooling water circulation system are constructed. The utility model can select the refrigerant circulation system or the cooling water circulation system to work in a timely manner according to the temperature of the external environment and the return air temperature of the wind box, thereby meeting the heat dissipation requirements of the air cooling system under conditions of high ambient temperature, and at the same time meeting the requirements of reducing the use frequency of the compressor when the ambient temperature is low, reducing power consumption, and improving system efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of a traditional air-cooled air conditioning system.

[0023] Figure 2 This is a schematic diagram of the structure of a top-mounted horizontal air-cooled air conditioner cooling the energy storage cabinet.

[0024] Figure 3 Schematic diagram of the energy storage cabinet being cooled by a roof-mounted horizontal air-cooled air conditioner.

[0025] Figure 4 This is a structural principle diagram of the three-phase heat exchanger of the utility model.

[0026] Figure 5 It is a structural diagram of the three-phase heat exchanger of the utility model.

[0027] Figure 6 This is a schematic diagram of the circulation structure of the energy storage air-cooled air conditioning system of the utility model.

[0028] Figure 7 It is a structural schematic diagram of the energy storage air-cooling air conditioning system of the utility model.

[0029] Figure 8 It is a structural schematic diagram of the energy storage air-cooling air conditioning system of the utility model.

[0030] Fig. 9 It is a structural schematic diagram of the energy storage air-cooling air conditioning system of the utility model.

[0031] Fig.10 This is a schematic diagram of the working method of the energy storage air-cooled air conditioning system of the utility model. DETAILED DESCRIPTION

[0032] The technical solution of the present utility model is further described below in conjunction with specific embodiments.

[0033] Embodiment 1

[0034] A three-phase heat exchanger, see attached Figure 4 and attached Figure 5The three-phase heat exchanger is an integral rectangular plate-shaped structure, which includes: a refrigerant chamber, a coolant water chamber and heat dissipation fins, wherein the coolant water chamber includes a first coolant water chamber body 11, a second coolant water chamber body 12 and an intermediate coolant connecting pipe 12, the first coolant water chamber body 11 and the second coolant water chamber body 12 are both rectangular tubes (flat tubes), which are parallel to each other and spaced apart, the number of the intermediate coolant connecting pipes 13 is multiple and they are parallel to each other and spaced apart, the two ends of each intermediate coolant connecting pipe are respectively connected to the first coolant water chamber body and the second coolant water chamber body, so as to realize the communication between the first coolant water chamber body and the second coolant water chamber body, and a water inlet 14 is set on the first coolant water chamber body, and a water outlet 15 is set on the second coolant water chamber body; the refrigerant chamber includes a first refrigerant chamber body 21, a second refrigerant chamber body 22 and an intermediate refrigerant connecting pipe 23, the first refrigerant chamber body 21 is embedded in the first coolant water chamber In the main body 11, the second refrigerant chamber main body 22 is embedded in the second coolant water chamber main body 12, the number of the intermediate refrigerant connecting pipes 23 is multiple and they are arranged side by side with the intermediate coolant connecting pipes 13, and the two ends of each intermediate refrigerant connecting pipe 23 are respectively connected to the first refrigerant chamber main body 21 and the second refrigerant chamber main body 22 (the intermediate refrigerant connecting pipe will pass through the pipe wall of the coolant water chamber main body, and it is necessary to fill solder at the penetration point for sealing to prevent leakage of the coolant water chamber main body), and partitions are provided in the first refrigerant chamber main body 21 and the second refrigerant chamber main body 22 to form a structure in which each intermediate refrigerant connecting pipe 23 is connected in series in sequence (that is, the first refrigerant chamber main body 21, the second refrigerant chamber main body 22 and each intermediate refrigerant connecting pipe 23 form a serpentine channel), and a liquid inlet 24 and a liquid outlet 25 are provided on the first refrigerant chamber main body; the heat dissipation fins 3 are provided on the intermediate coolant connecting pipes 13 and the intermediate refrigerant connecting pipes 23, and can dissipate heat from the intermediate coolant connecting pipes and the intermediate refrigerant connecting pipes.

[0035] Through the structural design of the three-phase heat exchanger, it is possible to arrange the heat exchanger in a smaller space while having the capabilities of refrigerant heat exchange, coolant heat exchange and wind heat exchange.

[0036] Embodiment 2

[0037] See attached Figure 6 -Attached Fig. 9 A novel high-efficiency energy storage air-cooled air-conditioning system comprises: a compressor 1, a three-phase heat exchanger Ⅰ2, a three-phase heat exchanger Ⅱ3, an external fan 4, an internal fan 5, a capillary tube 6 (or an expansion valve), a water pump 7, an expansion kettle 8, a drying tank 9 and a bellows 10.

[0038] The three-phase heat exchanger I and the three-phase heat exchanger II both adopt the three-phase heat exchanger structure described in Example 1.

[0039] The outlet of compressor 1 is connected to the liquid inlet of the refrigerant chamber of three-phase heat exchanger Ⅰ2, the liquid outlet of the refrigerant chamber of three-phase heat exchanger Ⅰ2 is connected to the inlet of drying tank 9, the outlet of drying tank 9 is connected to the inlet of capillary 6, the outlet of capillary 6 is connected to the liquid inlet of the refrigerant chamber of three-phase heat exchanger Ⅱ3, the liquid outlet of the refrigerant chamber of three-phase heat exchanger Ⅱ3 is connected to the inlet of compressor 1, thereby forming a refrigerant circulation system, that is, an air-conditioning refrigeration system based on a compressor, in which three-phase heat exchanger Ⅰ2 plays the role of a condenser and three-phase heat exchanger Ⅱ3 plays the role of an evaporator.

[0040] The water outlet of the water pump 7 is connected to the water inlet of the coolant water chamber of the three-phase heat exchanger Ⅰ2, and the water outlet of the water pump and the water inlet of the coolant water chamber of the three-phase heat exchanger Ⅰ are also connected to the expansion kettle 8, the water outlet of the coolant water chamber of the three-phase heat exchanger Ⅰ is connected to the water inlet of the coolant water chamber of the three-phase heat exchanger Ⅱ3 through a pipeline, and the water outlet of the coolant water chamber of the three-phase heat exchanger Ⅱ3 is connected to the water inlet of the water pump, thereby forming a coolant circulation system.

[0041] The bellows 10 is preferably a rectangular box, and a partition 11 is arranged inside the bellows to form two independent first cavities 101 and second cavities 102 inside the bellows, and both the first cavity and the second cavity are rectangular.

[0042] The internal fan 5 and the three-phase heat exchanger II3 are arranged in the first cavity 101, wherein the three-phase heat exchanger II3 is arranged obliquely in the first cavity 101, and the internal fan 5 is arranged on the side of the three-phase heat exchanger II3; a circulating air inlet 103 and a circulating air outlet 104 connected to the inside of the first cavity 101 are arranged on the bottom surface of the bellows 10, and the circulating air inlet 103 and the circulating air outlet 104 are respectively located on both sides of the three-phase heat exchanger II3; in this way, when working, the bellows 10 is arranged on the top of the energy storage cabinet, and the circulating air inlet and the circulating air outlet are used to be connected to the inside of the energy storage cabinet. Under the action of the internal fan 5, the heat inside the energy storage cabinet forms a cycle through the first cavity of the bellows and the three-phase heat exchanger II. During the circulation process, the three-phase heat exchanger II inside the first cavity can absorb the heat in the energy storage cabinet, thereby realizing the cooling of the energy storage cabinet.

[0043] The external fan 4 and the three-phase heat exchanger I2 are arranged in the second cavity 102 of the bellows, wherein the three-phase heat exchanger I2 is arranged obliquely in the second cavity 102, and the external fan 4 is arranged on the side of the three-phase heat exchanger I; and an air inlet 105 and an air outlet 106 connected to the interior of the second cavity are arranged on two opposite sides of the bellows along the second cavity; in this way, during operation, under the action of the external fan 4, the external air flow is introduced into the second cavity from the air inlet 105, flows through the three-phase heat exchanger I2, and is then discharged from the air outlet 106, so that the heat of the three-phase heat exchanger I2 can be discharged from the bellows 10.

[0044] Furthermore, a first temperature detection sensor is provided at the circulating air inlet 103 in the first cavity 101 for detecting the return air temperature of the three-phase heat exchanger II3.

[0045] See attached Fig.10 , the working method of the energy storage air-cooled air conditioning system is as follows:

[0046] First, the return air temperature of the three-phase heat exchanger II3 of the first cavity 101 is detected in real time to determine whether the return air temperature is higher than a set high temperature threshold. In this embodiment, preferably, the set high temperature threshold is 28° C.;

[0047] If the return air temperature of the three-phase heat exchanger II3 is higher than the set high temperature threshold (28°C), the compressor is turned on, and the refrigerant circulation system (i.e., the air conditioning refrigeration system based on the compressor) is used to dissipate the heat of the energy storage cabinet; during the operation of the refrigerant circulation system, it is determined whether the return air temperature of the three-phase heat exchanger II3 is higher than the set low temperature threshold (preferably, the set low temperature threshold is 25°C). If the return air temperature of the three-phase heat exchanger II3 is higher than the set low temperature threshold (25°C), the refrigerant circulation system continues to work; if the return air temperature of the three-phase heat exchanger II3 is lower than / equal to the set low temperature threshold (25°C), the operation is stopped;

[0048] If the return air temperature of the three-phase heat exchanger Ⅱ3 is lower than / equal to the set high temperature threshold (28°C), it is further determined whether the external environment temperature is higher than the set environment temperature threshold. In the present embodiment, preferably, the set environment temperature threshold is 12°C. If the external environment temperature is higher than the set environment temperature threshold, the compressor is started to dissipate the heat of the energy storage cabinet through the refrigerant circulation system (i.e., the air conditioning and refrigeration system based on the compressor). If the external environment temperature is lower than / equal to the set environment temperature threshold (12°C), the coolant circulation system is used to dissipate the heat of the energy storage cabinet. During the operation of the coolant circulation system, it is determined whether the return air temperature of the three-phase heat exchanger Ⅱ3 is higher than the set low temperature threshold (25°C). If the return air temperature of the three-phase heat exchanger Ⅱ3 is higher than the set low temperature threshold (25°C), the coolant circulation system is continued to operate. If the return air temperature of the three-phase heat exchanger Ⅱ3 is lower than / equal to the set low temperature threshold (25°C), the operation is stopped.

[0049] In this embodiment, when the refrigerant circulation system (i.e., the air conditioning refrigeration system based on the compressor) is used, the compressor, the inner fan, and the outer fan are working, the power consumption of the compressor is 1.86kW, the power consumption of the inner fan is 200W, and the power consumption of the outer fan is 270W, and the total power consumption is 2.33kW. When the coolant circulation system is used, only the inner fan, the outer fan, and the water pump are working, wherein the power consumption of the inner fan is 200W, the power consumption of the outer fan is 270W, the power consumption of the water pump is 150W, and the total power consumption is 620W.

[0050] The utility model can use natural air cooling mode (i.e., using a coolant circulation system) for cooling under relatively low ambient temperature conditions, thereby reducing the working time of the compressor. Compared with the traditional air conditioning system, the battery cabinet system is charged and discharged twice a day, and the annual power consumption is expected to be reduced from 3650kWh to 2246.4kWh, a decrease of 38.5%, which greatly improves the efficiency and energy consumption performance of the system.

[0051] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0052] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0053] The above is an exemplary description of the present invention. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be done by other technical personnel in this field without expending creative labor falls within the protection scope of the present invention.

Claims

1. A new type of high-efficiency energy storage air-cooled air conditioning system, characterized by: include: Compressor, three-phase heat exchanger I, three-phase heat exchanger II, external fan, internal fan, capillary tube, water pump, expansion kettle, drying tank and bellows; The outlet of the compressor is connected to the liquid inlet of the refrigerant chamber of the three-phase heat exchanger I, the liquid outlet of the refrigerant chamber of the three-phase heat exchanger I is connected to the inlet of the drying tank, the outlet of the drying tank is connected to the inlet of the capillary tube, the outlet of the capillary tube is connected to the liquid inlet of the refrigerant chamber of the three-phase heat exchanger II, and the liquid outlet of the refrigerant chamber of the three-phase heat exchanger II is connected to the inlet of the compressor, forming a refrigerant circulation system; The water outlet of the water pump is connected to the water inlet of the coolant water chamber of the three-phase heat exchanger I, and the water outlet of the water pump and the water inlet of the coolant water chamber of the three-phase heat exchanger I are also connected to the expansion kettle, the water outlet of the coolant water chamber of the three-phase heat exchanger I is connected to the water inlet of the coolant water chamber of the three-phase heat exchanger II through a pipeline, and the water outlet of the coolant water chamber of the three-phase heat exchanger II is connected to the water inlet of the water pump, forming a coolant circulation system; The interior of the bellows is provided with an independent first cavity and a second cavity, the inner fan and the three-phase heat exchanger II are arranged in the first cavity, wherein the three-phase heat exchanger II is arranged obliquely in the first cavity, and the inner fan is arranged on the side of the three-phase heat exchanger II; a circulating air inlet and a circulating air outlet connected to the interior of the first cavity are arranged on the bottom surface of the bellows, and the circulating air inlet and the circulating air outlet are respectively located on both sides of the three-phase heat exchanger II; the outer fan and the three-phase heat exchanger I are arranged in the second cavity of the bellows, wherein the three-phase heat exchanger I is arranged obliquely in the second cavity, and the outer fan is arranged on the side of the three-phase heat exchanger I; and an air inlet and an air outlet connected to the interior of the second cavity are arranged on two opposite sides of the bellows along the second cavity.

2. The novel high-efficiency energy storage air-cooled air conditioning system according to claim 1 is characterized in that: The three-phase heat exchanger I and the three-phase heat exchanger II have the same structure, and both adopt a three-phase heat exchanger structure, which includes: a refrigerant chamber, a coolant water chamber and a heat dissipation fin, wherein the coolant water chamber includes a first coolant water chamber body, a second coolant water chamber body and an intermediate coolant connecting pipe, the first coolant water chamber body and the second coolant water chamber body are both rectangular tubes, which are parallel to each other and spaced apart, the number of the intermediate coolant connecting pipes is multiple and they are parallel to each other and spaced apart, the two ends of each intermediate coolant connecting pipe are respectively connected to the first coolant water chamber body and the second coolant water chamber body, and a water inlet is set on the first coolant water chamber body, and a water outlet is set on the second coolant water chamber body; the refrigerant chamber includes a first refrigerant chamber The main body, the second refrigerant chamber main body and the intermediate refrigerant connecting pipe, the first refrigerant chamber main body is embedded in the first cooling liquid water chamber main body, the second refrigerant chamber main body is embedded in the second cooling liquid water chamber main body, the number of the intermediate refrigerant connecting pipes is multiple and they are arranged side by side with the intermediate cooling liquid connecting pipe, the two ends of each intermediate refrigerant connecting pipe are respectively connected to the first refrigerant chamber main body and the second refrigerant chamber main body, and partitions are arranged in the first refrigerant chamber main body and the second refrigerant chamber main body to form a structure in which the intermediate refrigerant connecting pipes are connected in series in sequence, and a liquid inlet and a liquid outlet are arranged on the first refrigerant chamber main body; the heat dissipation fins are arranged on the intermediate cooling liquid connecting pipe and the intermediate refrigerant connecting pipe, and can dissipate heat to the intermediate cooling liquid connecting pipe and the intermediate refrigerant connecting pipe.

3. The novel high-efficiency energy storage air-cooled air conditioning system according to claim 2 is characterized in that: The intermediate refrigerant connecting pipe will pass through the pipe wall of the coolant water chamber body, and solder will be filled at the penetration point for sealing.

4. The novel high-efficiency energy storage air-cooled air conditioning system according to claim 1 is characterized in that: A first temperature detection sensor is provided at the circulating air inlet in the first cavity, for detecting the return air temperature of the three-phase heat exchanger II.

5. The novel high-efficiency energy storage air-cooled air conditioning system according to claim 1 is characterized in that: The bellows is a rectangular box.

6. The novel high-efficiency energy storage air-cooling air conditioning system according to claim 5 is characterized in that: A partition is arranged inside the bellows, so that two independent first cavities and a second cavity are formed inside the bellows.

7. The novel high-efficiency energy storage air-cooling air conditioning system according to claim 1 is characterized in that: The first cavity and the second cavity are both rectangular.

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