Energy storage air conditioner compensation system and control method thereof

Abstract

The invention discloses an energy storage air conditioner compensation system and a control method thereof. The system comprises a first heat exchanger, a second heat exchanger and a constant-temperature water tank. The first heat exchanger comprises a first inlet, a second inlet, a first outlet and a second outlet, the first inlet is connected with the first outlet through a pipeline, the second inlet is connected with the second outlet through a pipeline, and the first inlet is used for introducing a refrigerant; the second heat exchanger comprises a first water inlet end, a second water inlet end, a first water outlet end and a second water outlet end, the first water inlet end is connected with the first water outlet end through a pipeline, and the second water inlet end is connected with the second water outlet end through a pipeline; the constant-temperature water tank comprises a first port and a second port; the second water outlet end is connected with the second inlet through a pipeline, the second outlet is connected with the first port of the constant-temperature water tank, and the second port is connected with the second water inlet end; the first water inlet end is connected with a water inlet pipe to be subjected to heat exchange, and the first water outlet end is connected with a water outlet pipe. The water temperature of the water outlet pipe is rapidly reduced in the starting stage of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an energy storage air conditioning compensation system and a control method thereof. Background Art

[0002] With the introduction of the "dual carbon" policy, the use of renewable energy for power generation has been vigorously promoted, and its penetration rate has increased year by year. However, due to the limitations of grid connection, a large amount of electricity has been wasted. In order to make full use of electricity, the current energy storage method is to charge and store lithium batteries, and then discharge them at the appropriate time. However, lithium batteries will cause heating problems during the charging and discharging process, and lithium batteries require a stable operating temperature range. Therefore, energy storage air conditioners have become an important supporting facility for energy storage containers.

[0003] In the existing energy storage air conditioning system, hot water is introduced into the water inlet pipe to exchange heat with the refrigerant in the pipe of the heat exchanger to reduce the water temperature in the outlet pipe. However, it takes a long time for the compressor to start and stabilize. In the initial stage of compressor startup, the system has not entered the stable operation stage. The refrigerant in the heat exchanger has a poor cooling effect on the hot water in the pipe, and the water temperature cannot be quickly reduced. The low water temperature requirement of the outlet pipe cannot be met, which reduces the user experience. Summary of the invention

[0004] To solve the above problems, the present invention provides an energy storage air conditioning compensation system and a control method thereof, which can make the water temperature in the water outlet pipe meet the low water temperature requirement, realize the rapid reduction of water temperature during the compressor startup phase, compensate for the shortcoming that the refrigerant heat exchange capacity is poor in the initial stage of compressor startup and cannot quickly reduce the water temperature of the water outlet pipe, thereby improving the user experience.

[0005] According to an embodiment of the present invention, on the one hand, a storage air conditioning compensation system is provided, comprising: a first heat exchanger, a second heat exchanger and a thermostatic water tank; the first heat exchanger comprises a first inlet, a second inlet, a first outlet and a second outlet, the first inlet is connected to the first outlet through a pipeline, the second inlet is connected to the second outlet through a pipeline, and the first inlet is used to pass refrigerant; the second heat exchanger comprises a first water inlet end, a second water inlet end, a first water outlet end and a second water outlet end, the first water inlet end is connected to the first water outlet end through a pipeline, and the second water inlet end is connected to the second water outlet end through a pipeline; the thermostatic water tank comprises a first port and a second port, the first port and the second port are connected through a first pipeline, and the first pipeline is fully or partially immersed in water in the thermostatic water tank; the second water outlet end is connected to the second inlet through a pipeline, the second outlet is connected to the first port of the thermostatic water tank, and the second port of the thermostatic water tank is connected to the second water inlet end; the first water inlet end is connected to a water inlet pipe to be heat exchanged, and the first water outlet end is connected to a water outlet pipe; wherein the water temperature in the thermostatic water tank is lower than the water temperature in the water inlet pipe or the first water inlet end.

[0006] By adopting the above technical solution, a second heat exchanger and a constant temperature water tank are connected between the first heat exchanger and the water inlet pipe and the water outlet pipe. The low-temperature water in the constant temperature water tank can be used to cool the water flowing into the second heat exchanger from the water inlet pipe, thereby reducing the water temperature of the water outlet pipe. During the startup phase of the compressor, the second heat exchanger and the constant temperature water tank can be enabled to quickly reduce the temperature of the water flowing into the water outlet pipe to meet the low water temperature requirement, thereby achieving a rapid reduction in water temperature during the startup phase of the compressor, compensating for the shortcoming that the refrigerant heat exchange capacity is poor in the initial stage of the compressor startup and cannot quickly reduce the water temperature of the water outlet pipe, thereby improving the user experience.

[0007] Preferably, a first solenoid valve is provided on the pipeline between the first water inlet end and the first water outlet end, and a second solenoid valve is provided on the pipeline between the second water inlet end and the second water outlet end.

[0008] Preferably, the first water inlet end is connected to the second water outlet end through a second pipe, and a third solenoid valve is provided on the second pipe; the first water outlet end is connected to the second water inlet end through a third pipe, and a fourth solenoid valve is provided on the third pipe.

[0009] Preferably, the first port of the thermostatic water tank is further connected to the second port through a fourth pipe, the fourth pipe is not immersed in the water in the thermostatic water tank, and a fifth solenoid valve is provided on the fourth pipe.

[0010] Preferably, a sixth solenoid valve is provided on the first pipeline.

[0011] Preferably, the energy storage air conditioning compensation system further includes: a water pump, which is connected to a pipeline between the second port of the constant temperature water tank and the second water inlet end.

[0012] Preferably, the energy storage air conditioning compensation system further includes: a first temperature sensor, and the first temperature sensor is used to monitor the refrigerant inlet temperature at the first inlet.

[0013] Preferably, the energy storage air conditioning compensation system further includes: a second temperature sensor, and the second temperature sensor is used to monitor the water temperature in the constant temperature water tank.

[0014] According to an embodiment of the present invention, on the other hand, a control method for an energy storage air conditioning compensation system is provided, characterized in that, applied to the energy storage air conditioning compensation system according to any one of the first aspects, a first solenoid valve is provided on the pipe between the first water inlet and the first water outlet, and a second solenoid valve is provided on the pipe between the second water inlet and the second water outlet; the first water inlet and the second water outlet are connected through a second pipe, and a third solenoid valve is provided on the second pipe; the first water outlet and the second water inlet are connected through a third pipe, and a fourth solenoid valve is provided on the third pipe; the first port and the second port of the thermostatic water tank are also connected through a fourth pipe, the fourth pipe is not immersed in the water in the thermostatic water tank, and a fifth solenoid valve is provided on the fourth pipe, and a sixth solenoid valve is provided on the first pipe;

[0015] The control method comprises:

[0016] When the compressor is in the startup stage and the refrigerant inlet temperature exceeds the first preset temperature, the first solenoid valve, the second solenoid valve and the sixth solenoid valve are controlled to be opened, and the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are controlled to be closed;

[0017] When the compressor is in a stable operation stage and the refrigerant inlet temperature is lower than the first preset temperature, the first solenoid valve, the second solenoid valve and the sixth solenoid valve are controlled to be closed, and the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are controlled to be opened.

[0018] Preferably, the control method of the energy storage air conditioning compensation system further includes:

[0019] Monitoring the operating frequency of the compressor, and determining that the compressor is in the startup phase when the operating frequency is in a frequency increase state, and determining that the compressor is in the stable operation phase when the operating frequency remains within a preset frequency range;

[0020] and / or,

[0021] When a component failure is detected, the first solenoid valve and the second solenoid valve are controlled to be opened, and the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are controlled to be closed;

[0022] and / or,

[0023] When the compressor is in a stable operation stage, the water temperature in the constant temperature water tank is monitored. When the water temperature in the constant temperature water tank is greater than the set water temperature, the fifth solenoid valve is controlled to be closed, and the sixth solenoid valve is controlled to be opened.

[0024] The present invention has the following beneficial effects: by connecting the second heat exchanger and the constant temperature water tank between the first heat exchanger and the water inlet pipe and the water outlet pipe, the low-temperature water in the constant temperature water tank can be used to cool the water flowing into the second heat exchanger from the water inlet pipe, thereby reducing the water temperature of the water outlet pipe; during the startup phase of the compressor, the second heat exchanger and the constant temperature water tank can be enabled to quickly reduce the temperature of the water flowing into the water outlet pipe to meet the low water temperature requirement, thereby achieving a rapid reduction in water temperature during the startup phase of the compressor, compensating for the shortcoming that the refrigerant heat exchange capacity is poor and cannot quickly reduce the water temperature of the water outlet pipe in the initial stage of compressor startup, and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0026] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0027] Figure 1 It is a structural diagram of an existing energy storage air conditioning system;

[0028] Figure 2 A schematic diagram of the structure of an energy storage air conditioning compensation system provided by the present invention;

[0029] Figure 3 A flow chart of a control method for an energy storage air conditioning compensation system provided by the present invention. DETAILED DESCRIPTION

[0030] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] Due to the safety and stability of energy storage containers, energy storage air conditioners also need to have the characteristics of fast response to ensure that the ambient temperature required by the battery is reached in a relatively short time. This puts higher requirements on the system, but the existing conventional energy storage air conditioning system takes a long time from startup → stable operation → maintaining a suitable constant temperature environment, which brings potential risks to the reliable operation of the battery, especially during the initial startup of the system or sudden failure of the device, which will affect the safety and stability of the energy storage container.

[0033] See Figure 1 The schematic diagram of the structure of the existing energy storage air conditioning system is shown, and the existing energy storage air conditioning system includes a condensing fan 11, a condenser 12, a compressor 13, a throttling element 14 and a plate heat exchanger 15. The water inlet pipe 16 introduces hot water with a relatively high temperature into the plate heat exchanger to exchange heat with the refrigerant. The refrigerant absorbs the heat of the hot water, and causes the outlet pipe 17 to flow out cold water. However, during the startup phase of the compressor 13, the compressor starts slowly and cannot quickly meet the requirement of lowering the water temperature of the outlet pipe. Or, when there is a sudden failure of a component in the system that cannot be quickly repaired, emergency heat exchange cannot be performed to lower the water temperature of the outlet pipe, which easily leads to a high outlet water temperature that cannot meet the requirements of the energy storage container, which will endanger the safety and stability of the energy storage container.

[0034] To improve the above problems, this embodiment provides an energy storage air conditioning compensation system. The method can be applied to a controller of the energy storage air conditioning compensation system. The controller can be an electronic device such as a computer or a control chip. Figure 2 The schematic diagram of the structure of the energy storage air conditioning compensation system shown in the figure includes: a first heat exchanger 21, a second heat exchanger 22 and a constant temperature water tank 23;

[0035] The first heat exchanger 21 includes a first inlet 1a, a second inlet 1b, a first outlet 1c, and a second outlet 1d. The first inlet 1a is connected to the first outlet 1c through a pipeline, and the second inlet 1b is connected to the second outlet 1d through a pipeline. The first inlet 1a is used to introduce refrigerant.

[0036] The second heat exchanger 22 includes a first water inlet end 2a, a second water inlet end 2b, a first water outlet end 2c and a second water outlet end 2d, wherein the first water inlet end 2a is connected to the first water outlet end 2c through a pipeline, and the second water inlet end 2b is connected to the second water outlet end 2d through a pipeline;

[0037] The thermostatic water tank 23 includes a first port 3a and a second port 3b, the first port 3a and the second port 3b are connected by a first pipe, and the first pipe g1 is fully or partially immersed in the water in the thermostatic water tank;

[0038] The second water outlet end 2d of the second heat exchanger 22 is connected to the second inlet 1b of the first heat exchanger 21 through a pipeline, the second outlet 1d is connected to the first port 3a of the constant temperature water tank, and the second port 3b of the constant temperature water tank is connected to the second water inlet end 2b; the first water inlet end 2a is connected to the water inlet pipe 4a to be exchanged with heat, and the first water outlet end 2c is connected to the water outlet pipe 4b; wherein, the water temperature in the constant temperature water tank 23 is lower than the water temperature in the water inlet pipe 4a or the first water inlet end 2a.

[0039] By connecting the constant temperature water tank between the first heat exchanger 21 and the second heat exchanger 22, when the compressor is in the startup stage, the condensing fan and the throttling element are slowly opened, and the refrigerant flow entering the first heat exchanger 21 is small, so that the water in the constant temperature water tank can form a closed cycle, and the path is 3b→2b→2d→1b→1d→3a→g1→3b. The water inlet pipe 4a is connected to the energy storage container, and the path of the water in the energy storage container is 4a→2a→2c→4b. The water in the constant temperature water tank can be heat exchanged with the water from the energy storage container in the second heat exchanger 22. Before the compressor enters the stable operation stage, the constant temperature water tank can achieve rapid cooling of the water in the outlet pipe.

[0040] In one embodiment, the thermostatic water tank has heat preservation properties so that the water temperature in the water tank is maintained at a certain value to meet the cold water heat exchange requirements in the container. In a specific embodiment, when the water temperature of the water inlet pipe is 23-26°C and the set water temperature in the water outlet pipe is 18-20°C, the water temperature in the thermostatic water tank can be maintained at 14-16°C.

[0041] In a specific embodiment, the first heat exchanger and the second heat exchanger may both be plate heat exchangers.

[0042] The above-mentioned energy storage air-conditioning compensation system provided in this embodiment connects the second heat exchanger and the constant temperature water tank between the first heat exchanger and the water inlet pipe and the water outlet pipe. The low-temperature water in the constant temperature water tank can be used to cool the water flowing into the second heat exchanger from the water inlet pipe, thereby reducing the water temperature of the water outlet pipe. During the startup phase of the compressor, the second heat exchanger and the constant temperature water tank can be enabled to quickly reduce the temperature of the water flowing into the water outlet pipe to meet the low water temperature requirement, thereby achieving a rapid reduction in water temperature during the startup phase of the compressor, compensating for the shortcoming that the refrigerant heat exchange capacity is poor in the initial stage of the compressor startup and cannot quickly reduce the water temperature of the water outlet pipe, thereby improving the user experience.

[0043] In one embodiment, Figure 2 As shown, the energy storage air conditioning compensation system provided in this embodiment also includes: a first solenoid valve 31 arranged on the pipeline between the first water inlet end 2a and the first water outlet end 2c, and a second solenoid valve 32 arranged on the pipeline between the second water inlet end 2b and the second water outlet end 2d.

[0044] In one embodiment, Figure 2 As shown, in the energy storage air conditioning compensation system provided by this embodiment: the first water inlet end 2a is connected to the second water outlet end 2d through a second pipe, and a third solenoid valve 33 is provided on the second pipe; the first water outlet end 2c is connected to the second water inlet end 2b through a third pipe, and a fourth solenoid valve 34 is provided on the third pipe.

[0045] When the compressor enters the stable operation stage and the temperature of the refrigerant entering the first heat exchanger 21 is lower than the first preset temperature (this temperature is related to the water temperature of the inlet pipe and the required set temperature of the outlet pipe), the water temperature of the inlet pipe can be lowered based on the refrigerant so that the water temperature of the outlet pipe meets the requirements. There is no need to use the second heat exchanger and the constant temperature water tank. By setting the first solenoid valve to the fourth solenoid valve, after the compressor runs stably, the first solenoid valve and the second solenoid valve can be closed, and the third solenoid valve and the fourth solenoid valve can be opened, thereby stopping the use of the second heat exchanger. Only the refrigerant is used to exchange heat with the water in the inlet pipe in the first heat exchanger. The water flow path is: 4a→2a→2d→1b→1d→2b→2c→4b. At this time, the compressor runs at a high frequency and can meet the heat exchange requirements. The second heat exchanger can be omitted, thereby achieving efficient and energy-saving heat exchange.

[0046] In one embodiment, Figure 2 As shown, in the energy storage air conditioning compensation system provided by this embodiment: the first port 3a and the second port 3b of the constant temperature water tank are also connected through a fourth pipe g4, the fourth pipe g4 is not immersed in the water in the constant temperature water tank, and a fifth solenoid valve 35 is provided on the fourth pipe g4.

[0047] In one embodiment, Figure 2 As shown, in the energy storage air conditioning compensation system provided in this embodiment: a sixth solenoid valve 36 is provided on the first pipeline g1.

[0048] By setting the fifth solenoid valve and the sixth solenoid valve in the thermostatic water tank, when the compressor is in the startup stage, the fifth solenoid valve can be triggered to close and the sixth solenoid valve can be opened, so that the water cooled by the thermostatic water tank can exchange heat with the water in the water inlet pipe in the second heat exchanger, thereby achieving the purpose of lowering the water temperature. When the compressor is in the stable operation stage, the fifth solenoid valve can be triggered to open and the sixth solenoid valve can be closed, without activating the water heat exchange in the thermostatic water tank, and the water in the water inlet pipe can directly exchange heat with the refrigerant in the first heat exchanger.

[0049] In one embodiment, Figure 2 As shown, the energy storage air conditioning compensation system provided in this embodiment also includes: a water pump 37, which is connected to the pipeline between the second port 3b of the constant temperature water tank and the second water inlet end 2b. By arranging a water pump on the circulating water pipeline, the water flow circulation can be accelerated and the heat exchange efficiency can be improved.

[0050] In one embodiment, the energy storage air conditioning compensation system provided in this embodiment also includes: a first temperature sensor (not shown in the figure), which is arranged in the pipeline at the first inlet 1a, and the first temperature sensor is used to monitor the refrigerant inlet temperature at the first inlet.

[0051] In one embodiment, the energy storage air conditioning compensation system provided in this embodiment also includes: a second temperature sensor (not shown in the figure), which is arranged in the water of the constant temperature water tank 23, and the second temperature sensor is used to monitor the water temperature in the constant temperature water tank.

[0052] In a specific embodiment, the first heat exchanger and the second heat exchanger may both be plate heat exchangers. To improve the plate heat exchange efficiency, the pipes inside the first heat exchanger and the second heat exchanger may be curved to increase the heat exchange area.

[0053] The energy storage air conditioning compensation system provided in this embodiment can make up for the shortcoming that the existing energy storage air conditioning system cannot achieve rapid cooling and heat dissipation during the startup phase, and ensure that the system meets the low water temperature requirements of the outlet pipe in a relatively short time. The system is energy-saving and efficient, and ensures the safety and stability of the energy storage container.

[0054] Corresponding to the energy storage air conditioning compensation system provided in the above embodiment, an embodiment of the present invention provides a control method for the energy storage air conditioning compensation system, which is applied to the energy storage air conditioning compensation system provided in the above embodiment, see Figure 3 The control method flow chart of the energy storage air conditioning compensation system shown in the figure mainly includes the following steps S302 to S304:

[0055] Step S302: When the compressor is in the startup stage and the refrigerant inlet temperature exceeds the first preset temperature, the first solenoid valve, the second solenoid valve and the sixth solenoid valve are controlled to open, and the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are controlled to close.

[0056] When the compressor is initially started, and / or, the temperature of the refrigerant entering the first heat exchanger is greater than the first preset temperature (the value range can be 19-21°C, and the preferred value is 20°C), the first solenoid valve, the second solenoid valve and the sixth solenoid valve are controlled to be opened, and the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are controlled to be closed, so that the water flow path is 3b→2b→2d→1b→1d→3a→g1→3b, thereby lowering the water temperature in the constant temperature water tank entering the second heat exchanger, thereby indirectly achieving heat exchange with the water in the water inlet pipe, avoiding the problem of failing to lower the water temperature of the water outlet pipe during the startup phase of the compressor and thus failing to provide cold water to the container.

[0057] Step S304: When the compressor is in a stable operation stage and the refrigerant inlet temperature is lower than a first preset temperature, the first solenoid valve, the second solenoid valve and the sixth solenoid valve are controlled to be closed, and the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are controlled to be opened.

[0058] When the compressor is running stably and the temperature of the refrigerant entering the first heat exchanger is lower than the first preset temperature, the first solenoid valve, the second solenoid valve and the sixth solenoid valve are controlled to be closed, and the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are controlled to be opened. When the temperature of the refrigerant entering the first heat exchanger meets the requirement, the second heat exchanger and the constant temperature water tank can be closed, and the water will not flow through the inside of the constant temperature water tank, which can reduce the water temperature in the water inlet pipe and improve the heat exchange efficiency.

[0059] In one embodiment, the method provided in this embodiment also includes: monitoring the operating frequency of the compressor, and when the operating frequency is in an increasing frequency state, determining that the compressor is in a startup phase, and when the operating frequency remains within a preset frequency range, determining that the compressor is in a stable operation phase.

[0060] When the compressor frequency rises from 0 to the set frequency, the frequency increase process of the compressor is regarded as the startup stage. When the compressor rises to the set frequency, a small range of fluctuations will occur above and below the set frequency. At this time, the compressor is determined to be in a stable operation stage. The above preset frequency range is related to the target frequency of the compressor operation. The preset frequency range can be [target frequency-x, target frequency+x], and the value range of x is 1 to 3Hz.

[0061] In one embodiment, the method provided in this embodiment further includes: when a component failure is detected, controlling the first solenoid valve and the second solenoid valve to be opened, and controlling the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve to be closed.

[0062] The above-mentioned component failures may include any one or more of compressor failure, condensing fan failure, condenser failure and throttling element failure. When there is a component failure in the system, the refrigerant cannot exchange heat with the container water entering the water inlet pipe. As an emergency measure, the first solenoid valve and the second solenoid valve are controlled to open, and the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are controlled to close, so that the low-temperature water in the constant temperature water tank can exchange heat with the water in the water inlet pipe to reduce the water temperature in the water outlet pipe and meet the heat exchange requirements of the energy storage container.

[0063] In one embodiment, the method provided in this embodiment also includes: when the compressor is in a stable operation stage, monitoring the water temperature in the constant temperature water tank, when the water temperature in the constant temperature water tank is greater than the set water temperature, controlling the fifth solenoid valve to close and controlling the sixth solenoid valve to open.

[0064] The water temperature in the constant temperature water tank is monitored based on the temperature sensor. When the water temperature in the constant temperature water tank is greater than the set water temperature, it indicates that the water in the constant temperature water tank can no longer cool the water in the water inlet pipe. The fifth solenoid valve is controlled to close, and the water flow path is: 4a→2a→2d→1b→1d→g1→2b→2c→4b. When the water flows through the constant temperature water tank, it passes through the first pipe g1 under the water in the constant temperature water tank, thereby achieving the purpose of cooling the water in the constant temperature water tank and allowing the constant temperature water tank to store cold for a long time.

[0065] In a specific implementation, when controlling each solenoid valve to be opened, power may be supplied to the solenoid valve that needs to be opened, and when controlling the solenoid valve to be closed, power may be cut off to the solenoid valve that needs to be closed, so as to realize the opening and closing control of the solenoid valve.

[0066] The control method of the energy storage air conditioning compensation system provided in this embodiment can control the opening and closing of each solenoid valve, and can use the low-temperature water in the constant temperature water tank to cool the water flowing into the second heat exchanger from the water inlet pipe during the compressor startup phase, thereby reducing the water temperature of the water outlet pipe. During the compressor startup phase, the second heat exchanger and the constant temperature water tank can be enabled to quickly reduce the temperature of the water flowing into the water outlet pipe to meet the low water temperature demand, thereby achieving a rapid reduction in water temperature during the compressor startup phase, compensating for the shortcoming that the refrigerant heat exchange capacity is poor in the initial stage of the compressor startup and cannot quickly reduce the water temperature of the water outlet pipe, thereby improving the user experience.

[0067] This embodiment also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the control method embodiment of the energy storage air conditioning compensation system is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0068] Of course, those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the control device through a computer, and the program can be stored in a computer-readable storage medium. When the program is executed, it may include the processes of the above-mentioned method embodiments, wherein the storage medium may be a memory, a disk, an optical disk, etc.

[0069] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

[0070] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0071] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. As for the control method of the energy storage air conditioning compensation system disclosed in the embodiment, since it corresponds to the energy storage air conditioning compensation system disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the system part description.

[0072] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0073] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. An energy storage air conditioning compensation system, characterized in that: include: A first heat exchanger, a second heat exchanger and a constant temperature water tank; The first heat exchanger comprises a first inlet, a second inlet, a first outlet and a second outlet, the first inlet is connected to the first outlet via a pipeline, the second inlet is connected to the second outlet via a pipeline, and the first inlet is used to introduce refrigerant; The second heat exchanger comprises a first water inlet, a second water inlet, a first water outlet and a second water outlet, the first water inlet is connected to the first water outlet via a pipeline, and the second water inlet is connected to the second water outlet via a pipeline; The thermostatic water tank comprises a first port and a second port, the first port and the second port are connected via a first pipe, and the first pipe is fully or partially immersed in water in the thermostatic water tank; The second water outlet is connected to the second inlet through a pipeline, the second outlet is connected to the first port of the constant temperature water tank, and the second port of the constant temperature water tank is connected to the second water inlet; the first water inlet is connected to the water inlet pipe to be heat exchanged, and the first water outlet is connected to the water outlet pipe; wherein the water temperature in the constant temperature water tank is lower than the water temperature in the water inlet pipe or the first water inlet.

2. The energy storage air conditioning compensation system according to claim 1, characterized in that: A first solenoid valve is arranged on the pipeline between the first water inlet end and the first water outlet end, and a second solenoid valve is arranged on the pipeline between the second water inlet end and the second water outlet end.

3. The energy storage air conditioning compensation system according to claim 2, characterized in that: The first water inlet end is connected to the second water outlet end through a second pipe, and a third solenoid valve is arranged on the second pipe; the first water outlet end is connected to the second water inlet end through a third pipe, and a fourth solenoid valve is arranged on the third pipe.

4. The energy storage air conditioning compensation system according to claim 1, characterized in that: The first port of the thermostatic water tank is also connected to the second port through a fourth pipe, the fourth pipe is not immersed in the water in the thermostatic water tank, and a fifth solenoid valve is arranged on the fourth pipe.

5. The energy storage air conditioning compensation system according to claim 4, characterized in that: A sixth solenoid valve is arranged on the first pipeline.

6. The energy storage air conditioning compensation system according to any one of claims 1 to 5, characterized in that: Also includes: A water pump is connected to a pipeline between the second port of the constant temperature water tank and the second water inlet end.

7. The energy storage air conditioning compensation system according to claim 1, characterized in that: Also includes: A first temperature sensor is used to monitor the refrigerant inlet temperature at the first inlet.

8. The energy storage air conditioning compensation system according to claim 1, characterized in that: Also includes: A second temperature sensor, wherein the second temperature sensor is used to monitor the water temperature in the constant temperature water tank.

9. A control method for an energy storage air conditioning compensation system, characterized in that: The energy storage air conditioning compensation system applied to any one of claims 1 to 8, wherein a first solenoid valve is provided on the pipe between the first water inlet and the first water outlet, and a second solenoid valve is provided on the pipe between the second water inlet and the second water outlet; the first water inlet and the second water outlet are connected through a second pipe, and a third solenoid valve is provided on the second pipe; the first water outlet and the second water inlet are connected through a third pipe, and a fourth solenoid valve is provided on the third pipe; the first port and the second port of the thermostatic water tank are also connected through a fourth pipe, the fourth pipe is not immersed in the water in the thermostatic water tank, and a fifth solenoid valve is provided on the fourth pipe, and a sixth solenoid valve is provided on the first pipe; The control method comprises: When the compressor is in the startup stage and the refrigerant inlet temperature exceeds the first preset temperature, the first solenoid valve, the second solenoid valve and the sixth solenoid valve are controlled to be opened, and the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are controlled to be closed; When the compressor is in a stable operation stage and the refrigerant inlet temperature is lower than the first preset temperature, the first solenoid valve, the second solenoid valve and the sixth solenoid valve are controlled to be closed, and the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are controlled to be opened.

10. The control method according to claim 9, characterized in that: Also includes: Monitoring the operating frequency of the compressor, and determining that the compressor is in the startup phase when the operating frequency is in a frequency increase state, and determining that the compressor is in the stable operation phase when the operating frequency remains within a preset frequency range; and / or, When a component failure is detected, the first solenoid valve and the second solenoid valve are controlled to be opened, and the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are controlled to be closed; and / or, When the compressor is in a stable operation stage, the water temperature in the constant temperature water tank is monitored. When the water temperature in the constant temperature water tank is greater than the set water temperature, the fifth solenoid valve is controlled to be closed, and the sixth solenoid valve is controlled to be opened.

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