Heat storage method and device, storage medium and heat storage equipment

Abstract

The invention discloses a heat storage method, a storage medium and heat storage equipment, the method is applied to the heat storage equipment, the heat storage equipment comprises a compressor, an intermediate heat exchanger, a heat exchange module, a first refrigerant pipe and a second refrigerant pipe, the intermediate heat exchanger comprises a first flow path and a second flow path, and the heat exchange module comprises a heat storage pipe and a phase change material. Comprising the steps that a refrigerant output by a compressor enters a first flow path of an intermediate heat exchanger, a second flow path absorbs heat of the refrigerant in the first flow path, the temperature of the refrigerant reaching the outlet end of a heat storage pipe is reduced to the preset temperature, the refrigerant flows through a phase change material through the heat storage pipe of a heat exchange module, and heat storage is conducted on the basis that the phase change material absorbs the heat of the refrigerant; the second refrigerant pipe inputs the refrigerant output from the outlet end of the heat storage pipe to the second flow path, and the refrigerant is transmitted to the air inlet end of the compressor based on the second flow path, and by the adoption of the heat storage device, the service life of the heat storage device is prolonged, and the reliability of the heat storage device is improved.

Description

Technical Field

[0001] This specification relates to the field of HVAC, and in particular to a heat storage method, storage medium and heat storage equipment. Background Art

[0002] Nowadays, with the continuous development of science and technology and the strengthening of environmental awareness, green energy is used in daily heating. However, in the process of using green energy such as wind energy and solar energy as heat sources for heating, there is a problem of unstable heat source. Therefore, phase change energy storage materials are used to store heat to avoid the problem of unstable heat source.

[0003] In the related art, in the process of heat storage using phase change energy storage materials, heat is transferred to the mixed solution through a heat pump, and then the mixed solution transfers the heat to the phase change energy storage material for heat storage. However, during the heat storage process, the heat exchange temperature of the mixed solution gradually decreases, resulting in uneven heat flux density of the phase change energy storage material, making it impossible to accurately determine the degree of heat storage. Summary of the invention

[0004] The present specification provides a heat storage method, storage medium and heat storage equipment. The method can make the temperature of the refrigerant input to the heat exchange module be a preset temperature according to the intermediate heat exchanger absorbing the heat of the refrigerant output by the compressor, thereby avoiding damage to the phase change material in the heat exchange module caused by the refrigerant with too high a temperature, thereby achieving heat storage according to the heat exchange module, extending the service life of the heat storage equipment, and improving the reliability of the heat storage equipment.

[0005] In a first aspect, a heat storage method is provided, characterized in that the method is applied to a heat storage device, the heat storage device includes a compressor, an intermediate heat exchanger, a heat exchange module, a first refrigerant pipe and a second refrigerant pipe, the intermediate heat exchanger includes a first flow path and a second flow path, and the heat exchange module includes a heat storage pipe and a phase change material;

[0006] The exhaust end of the compressor is connected to the inlet end of the first flow path, the outlet end of the first flow path is connected to one end of the first refrigerant pipe, the other end of the first refrigerant pipe is connected to the inlet end of the heat storage pipe, the outlet end of the heat storage pipe is connected to one end of the second refrigerant pipe, the other end of the second refrigerant pipe is connected to the inlet end of the second flow path, and the outlet end of the second flow path is connected to the air intake end of the compressor;

[0007] The method comprises:

[0008] The refrigerant output by the compressor enters the first flow path of the intermediate heat exchanger, and the second flow path absorbs the heat of the refrigerant in the first flow path, reducing the temperature of the refrigerant reaching the outlet end of the heat storage pipe to a preset temperature;

[0009] The heat storage pipe of the heat exchange module allows the refrigerant to flow through the phase change material, and the phase change material absorbs the heat of the refrigerant to store heat;

[0010] The second refrigerant pipe inputs the refrigerant output from the outlet end of the heat storage pipe into the second flow path, and transmits the refrigerant to the air inlet end of the compressor based on the second flow path.

[0011] Through the above technical scheme, the heat of the refrigerant output by the compressor can be absorbed by the intermediate heat exchanger, so that the temperature of the refrigerant input to the heat exchange module is a preset temperature, thereby avoiding damage to the phase change material in the heat exchange module caused by the refrigerant with too high a temperature, and realizing heat storage according to the heat exchange module, thereby extending the service life of the heat storage device and improving the reliability of the heat storage device.

[0012] In combination with the first aspect, in some possible implementations, the heat storage device further includes a bypass valve and a first temperature sensor, one end of the bypass valve is connected to the inlet end of the first flow path and the air outlet end of the compressor, the other end of the bypass valve is connected to the outlet end of the first flow path and one end of the first refrigerant pipe, and the first temperature sensor is disposed at the inlet end of the first refrigerant pipe;

[0013] The method further comprises:

[0014] Acquiring a detected temperature of the inlet end of the first refrigerant pipe detected by the first temperature sensor;

[0015] Acquire a temperature difference between the detected temperature and a preset temperature, and compare the temperature difference with the preset temperature difference, wherein the preset temperature difference includes a first temperature, a second temperature, and a third temperature, wherein the first temperature is greater than the second temperature, and the second temperature is greater than the third temperature;

[0016] Based on the comparison result of the temperature difference and the preset temperature difference, determining the adjustment range and adjustment direction of the bypass valve;

[0017] The bypass valve is adjusted by using the adjustment range and the adjustment direction, and based on the bypass valve's diversion of the refrigerant, the range of temperature reduction of the refrigerant by the first flow path is adjusted.

[0018] Through the above technical scheme, the adjustment range and direction of the bypass valve can be determined by the difference between the detected temperature of the refrigerant and the preset temperature, so as to adjust the bypass valve and control the degree of heat absorption of the refrigerant by the intermediate heat exchanger, thereby accurately controlling the temperature of the refrigerant and using the highest possible temperature for heat storage without damaging the phase change material of the heat exchange module, thereby improving the reliability and efficiency of the heat storage equipment.

[0019] In combination with the first aspect, in some possible implementations, determining the adjustment amplitude and adjustment direction of the bypass valve based on the comparison result between the temperature difference and the preset temperature difference includes:

[0020] If the temperature difference is greater than or equal to the first temperature, determining that the adjustment amplitude of the bypass valve is the first step, and the adjustment direction of the bypass valve is to reduce the valve amplitude;

[0021] If the temperature difference is greater than or equal to the second temperature and less than the first temperature, it is determined that the adjustment amplitude of the bypass valve is a second step number, the adjustment direction of the bypass valve is to reduce the valve amplitude, and the second step number is less than the first step number;

[0022] If the temperature difference is less than or equal to the third temperature, it is determined that the adjustment amplitude of the bypass valve is a third step number, and the adjustment direction of the bypass valve is to increase the valve amplitude.

[0023] In combination with the first aspect, in some possible implementations, if the detected temperature does not change within a preset time period after the bypass valve is adjusted, and the temperature difference is greater than the first temperature, the heat storage device is controlled to be closed.

[0024] Through the above technical solution, when the bypass valve fails, the heat storage device can be shut down in time when the temperature is abnormal based on the detected temperature of the refrigerant, thereby avoiding damage to the heat storage device by the refrigerant with excessively high temperature, thereby improving the safety of the heat storage device.

[0025] In combination with the first aspect, in some possible implementations, the heat storage device further includes an expansion valve, a heat exchanger, and a low-pressure tank;

[0026] One end of the expansion valve is connected to the second refrigerant pipe, the other end of the expansion valve is connected to one end of the heat exchanger, the other end of the heat exchanger is connected to the inlet end of the second flow path, and the outlet end of the second flow path is connected to one end of the low-pressure tank;

[0027] The method further comprises:

[0028] The second refrigerant pipe transmits the refrigerant to the expansion valve, and the expansion valve decompresses the refrigerant to control the phase of the refrigerant to switch from a first phase to a second phase;

[0029] The expansion valve transfers the refrigerant to the heat exchanger and the second flow path, the heat exchanger and the second flow path control the refrigerant to absorb heat, and transfers the refrigerant to the low-pressure tank based on the second flow path, and the low-pressure tank is used to store the refrigerant.

[0030] Through the above technical solution, the refrigerant after heat storage in the heat exchange module can be depressurized, heated, and other operations can be performed through other components in the heat storage device to recover the refrigerant, and the refrigerant in liquid state can be stored in a low-pressure tank.

[0031] In combination with the first aspect, in some possible implementations, the other end of the low-pressure tank is connected to the air inlet end of the compressor, and the method further includes:

[0032] The compressor compresses the refrigerant obtained from the low-pressure tank and transmits the refrigerant to the intermediate heat exchanger based on the exhaust end.

[0033] Through the above technical solution, the refrigerant stored in the low-pressure tank can be compressed by the compressor and then transmitted to the intermediate heat exchanger, so as to store heat for the heat exchange module and form a thermodynamic cycle with other components of the heat storage device.

[0034] In combination with the first aspect, in some possible implementations, the heat storage device also includes a four-way valve, a first end of the four-way valve is connected to the exhaust end of the compressor, a second end of the four-way valve is connected to the inlet end of the first flow path, a third end of the four-way valve is connected to the outlet end of the second flow path, and a fourth end of the four-way valve is connected to the low-pressure tank.

[0035] In combination with the first aspect, in some possible implementations, the heat exchange module further includes a heat extraction pipe, and the heat extraction pipe is connected to the energy release circuit;

[0036] The method further comprises:

[0037] The energy release circuit is based on inputting a heat extracting agent into one end of the heat extracting pipe, and the heat extracting agent absorbs the heat of the phase change material;

[0038] The intermediate heat exchanger outputs the heat-absorbing medium after absorbing heat to the energy-discharging circuit based on the heat-absorbing pipe.

[0039] Through the above technical solution, the heat of the phase change material can be transferred to the heat extracting agent in the heat extracting pipe through the heat extracting pipe in the heat exchange module, thereby completing the heat extraction of the phase change material energy release loop.

[0040] In combination with the first aspect, in some possible implementations, the heat storage device further includes a second temperature sensor, and the second temperature sensor is disposed at an exhaust end of the compressor;

[0041] The method further comprises:

[0042] Acquire a test temperature of the refrigerant output from the exhaust end detected by the second temperature sensor, and compare the test temperature with a first safety temperature and a second safety temperature respectively, wherein the first safety temperature is lower than the second safety temperature;

[0043] If the test temperature is greater than the first safety temperature, controlling the heat storage device to generate and output a prompt message;

[0044] If the test temperature is greater than the second safety temperature, the heat storage device is controlled to be turned off.

[0045] Through the above technical solution, by comparing the test temperature of the refrigerant output by the compressor with the safety temperature, a prompt message can be output if the temperature of the refrigerant output by the compressor is too high, or even the heat storage device can be shut down, thereby avoiding damage to the heat storage device and improving the safety and reliability of the heat storage device.

[0046] In combination with the first aspect, in certain possible implementations, the inlet end of the second flow path of the intermediate heat exchanger is connected to one end of the expansion valve, the outlet end of the second flow path is connected to one end of the heat exchanger, and the other end of the heat exchanger is connected to one end of the low-pressure tank.

[0047] In combination with the first aspect, in some possible implementations, the heat storage device further includes at least one indoor unit, one end of each of the indoor units is connected to the outlet end of the first flow path and the inlet end of the heat storage pipe, and the other end of each of the indoor units is connected to the outlet end of the heat storage pipe and the inlet end of the second flow path.

[0048] Through the above technical solution, the indoor unit is connected in parallel with the heat exchange module, so that the refrigerant output by the intermediate heat exchanger can be applied to multiple indoor units, and refrigerant is provided to multiple indoor units for operation, thereby improving the heat storage efficiency of the heat storage equipment.

[0049] In a second aspect, a heat storage device is provided, the heat storage device comprising a compressor, an intermediate heat exchanger, a heat exchange module, a first refrigerant pipe and a second refrigerant pipe, the intermediate heat exchanger comprising a first flow path and a second flow path, the heat exchange module comprising a heat storage pipe and a phase change material;

[0050] The exhaust end of the compressor is connected to the inlet end of the first flow path, the outlet end of the first flow path is connected to one end of the first refrigerant pipe, the other end of the first refrigerant pipe is connected to the inlet end of the heat storage pipe, the outlet end of the heat storage pipe is connected to one end of the second refrigerant pipe, the other end of the second refrigerant pipe is connected to the inlet end of the second flow path, and the outlet end of the second flow path is connected to the intake end of the compressor.

[0051] In combination with the second aspect, in some possible implementations, the heat storage device also includes a bypass valve and a first temperature sensor, one end of the bypass valve is connected to the inlet end of the first flow path and the outlet end of the compressor, the other end of the bypass valve is connected to the outlet end of the first flow path and one end of the first refrigerant pipe, and the first temperature sensor is arranged at the inlet end of the first refrigerant pipe.

[0052] In conjunction with the second aspect, in some possible implementations, the heat storage device further includes an expansion valve, a heat exchanger, and a low-pressure tank;

[0053] One end of the expansion valve is connected to the second refrigerant pipe, the other end of the expansion valve is connected to one end of the heat exchanger, the other end of the heat exchanger is connected to the inlet end of the second flow path, and the outlet end of the second flow path is connected to one end of the low-pressure tank.

[0054] In combination with the second aspect, in some possible implementations, the heat storage device also includes a four-way valve, a first end of the four-way valve is connected to the exhaust end of the compressor, a second end of the four-way valve is connected to the inlet end of the first flow path, a third end of the four-way valve is connected to the outlet end of the second flow path, and a fourth end of the four-way valve is connected to the low-pressure tank.

[0055] In combination with the second aspect, in some possible implementations, the heat exchange module further includes a heat extraction pipe, and the heat extraction pipe is connected to the energy release circuit.

[0056] In combination with the second aspect, in certain possible implementations, the inlet end of the second flow path of the intermediate heat exchanger is connected to one end of the expansion valve, the outlet end of the second flow path is connected to one end of the heat exchanger, and the other end of the heat exchanger is connected to one end of the low-pressure tank.

[0057] In combination with the second aspect, in some possible implementations, the heat storage device also includes at least one indoor unit, one end of each of the indoor units is connected to the outlet end of the first flow path and the inlet end of the heat storage pipe, and the other end of each of the indoor units is connected to the outlet end of the heat storage pipe and the inlet end of the second flow path.

[0058] In a third aspect, an embodiment of the present specification provides a computer storage medium, which stores a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the steps of the above method. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in this specification or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0060] Figure 1 A system architecture diagram of a heat storage method provided in an embodiment of this specification;

[0061] Figure 2 A schematic diagram of a heat storage method provided in an embodiment of this specification;

[0062] Figure 3 A schematic diagram of a heat storage method provided in an embodiment of this specification;

[0063] Figure 4 A schematic diagram of the structure of a heat storage device provided in an embodiment of this specification;

[0064] Figure 5 A schematic diagram of the structure of a heat storage device provided in an embodiment of this specification;

[0065] Figure 6 A schematic diagram of the structure of a heat storage device provided in an embodiment of this specification;

[0066] Figure 7 A schematic diagram of the structure of a heat storage device provided in an embodiment of this specification;

[0067] Figure 8 A schematic diagram of the structure of a heat storage device provided in an embodiment of this specification;

[0068] Fig. 9 A schematic diagram of the structure of a heat storage device provided in an embodiment of this specification;

[0069] Fig.10 A schematic diagram of the structure of a heat storage device provided in an embodiment of this specification. DETAILED DESCRIPTION

[0070] In order to make the features and advantages of this specification more obvious and easy to understand, the technical solutions in this specification are described clearly and completely in conjunction with the drawings in this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this specification.

[0071] See also Figure 1, which provides a system architecture diagram of a heat storage device in the embodiments of this specification. Figure 1 As shown, the heat storage method provided in the embodiment of this specification can be applied to heat storage equipment to perform the heat storage process. The system architecture provided in the embodiment of this specification mainly includes a compressor 10, an intermediate heat exchanger 20, a heat exchange module 30, a first refrigerant pipe 40 and a second refrigerant pipe 50. The intermediate heat exchanger 20 includes a first flow path 21 and a second flow path 22. The heat exchange module includes a heat storage pipe 31 and a phase change material 32. Among them, temperature transfer can be performed between the first flow path and the second flow path, and the phase change material can be a PCM (Phase Change Material) material.

[0072] The exhaust end of the compressor is connected to the inlet end of the first flow path, the outlet end of the first flow path is connected to one end of the first refrigerant pipe, the other end of the first refrigerant pipe is connected to the inlet end of the heat storage pipe, the outlet end of the heat storage pipe is connected to one end of the second refrigerant pipe, the other end of the second refrigerant pipe is connected to the inlet end of the second flow path, and the outlet end of the second flow path is connected to the air intake end of the compressor.

[0073] The refrigerant output by the compressor enters the first flow path of the intermediate heat exchanger, and the second flow path absorbs the heat of the refrigerant in the first flow path, reducing the temperature of the refrigerant reaching the outlet end of the heat storage tube to a preset temperature. The heat storage tube of the heat exchange module passes the refrigerant through the phase change material, and stores heat based on the phase change material absorbing the heat of the refrigerant. The second refrigerant tube inputs the refrigerant output from the outlet end of the heat storage tube into the second flow path, and transmits it to the air inlet end of the compressor based on the second flow path, thereby extending the service life of the heat storage equipment and improving the reliability of the heat storage equipment.

[0074] based on Figure 1 The system architecture shown below will be combined with Figure 2 , the heat storage method provided in the embodiments of this specification is introduced in detail.

[0075] See also Figure 2 , which is a schematic diagram of a heat storage method according to an embodiment of this specification. Figure 2 As shown, the method may include the following steps S101-S103.

[0076] S101, the refrigerant output by the compressor enters the first flow path of the intermediate heat exchanger, and the second flow path absorbs the heat of the refrigerant in the first flow path, reducing the temperature of the refrigerant reaching the outlet end of the heat storage pipe to a preset temperature;

[0077] In one embodiment, when heat is stored according to the heat storage device, the compressor in the heat storage device outputs the compressed refrigerant to the first flow path of the intermediate heat exchanger. The refrigerant can be a medium for transferring heat, and has the characteristics of easily absorbing heat to become a gas, and easily releasing heat to become a liquid. Since the temperature of the refrigerant in the second flow path in the intermediate heat exchanger is lower than the temperature in the first flow path, according to the principle of temperature transmission from high temperature to low temperature, the refrigerant in the second flow path absorbs the heat of the refrigerant in the first flow path to reduce the temperature of the refrigerant, and the cooled refrigerant is transmitted to the first refrigerant pipe. The first refrigerant pipe transmits the refrigerant to the outlet end of the heat storage pipe. The temperature of the refrigerant transmitted to the outlet end is a preset temperature.

[0078] The preset temperature may be a saturation temperature at which the refrigerant is in a saturated gas state. When the refrigerant is at the saturation temperature, the physical phase of the refrigerant is a state in which the liquid and gas are in a dynamic equilibrium, wherein the temperature and pressure of the liquid and gas remain constant. The specific temperature value of the saturation temperature may be a temperature determined according to the gas pressure detected at the exhaust end of the compressor, and the temperature may be obtained by looking up in a table obtained in advance in an experiment.

[0079] S102, the heat storage pipe of the heat exchange module allows the refrigerant to flow through the phase change material, and the phase change material absorbs the heat of the refrigerant to store heat;

[0080] In one embodiment, since the heat storage module is filled with phase change material and the heat storage tube is arranged in the phase change material, during the process of the heat storage tube in the heat exchange module transmitting the refrigerant, the phase change material absorbs the latent heat of the refrigerant in the heat storage tube to store heat.

[0081] The phase change material may be a PCM (Phase Change Material) material, which is a material that can regulate temperature by absorbing and releasing heat. It absorbs or releases a large amount of latent heat by undergoing a reversible phase change between solid and liquid states, and has a heat storage effect.

[0082] S103, the second refrigerant pipe inputs the refrigerant output from the outlet end of the heat storage pipe into the second flow path, and transmits the refrigerant to the air inlet end of the compressor through the second flow path;

[0083] In one embodiment, the heat storage pipe transfers the refrigerant from the inlet end to the outlet end, and the second refrigerant pipe transfers the refrigerant output from the outlet end of the heat storage pipe to the second flow path of the intermediate heat exchanger, so that the refrigerant absorbs the heat of the refrigerant in the first flow path according to the refrigerant after absorbing the heat, and transfers the refrigerant to the air intake end of the compressor based on the second flow path, forming a circuit for heat storage based on refrigerant and phase change material.

[0084] It can be understood that after the refrigerant absorbs heat in the heat exchange module, the latent heat of the refrigerant decreases. When the refrigerant is transmitted to the second flow path, the temperature of the refrigerant in the second flow path is lower than the temperature of the refrigerant in the first flow path. Therefore, the heat of the refrigerant in the first flow path is absorbed, which can not only reduce the temperature of the refrigerant in the first flow path, but also increase the gaseous proportion of the refrigerant in the second flow path by absorbing heat, which is convenient for the compressor to compress and heat the refrigerant.

[0085] In the embodiments of the present specification, the temperature of the refrigerant input to the heat exchange module is made to be a preset temperature by absorbing the heat of the refrigerant output by the compressor according to the intermediate heat exchanger, thereby avoiding damage to the phase change material in the heat exchange module due to the refrigerant with too high a temperature, and achieving heat storage according to the heat exchange module, thereby extending the service life of the heat storage device and improving the reliability of the heat storage device.

[0086] See also Figure 3 , which is a schematic diagram of a heat storage method according to an embodiment of this specification. Figure 3 As shown, the method is applied to a heat storage device and may include the following steps S201 to S208.

[0087] S201, the refrigerant output by the compressor enters the first flow path of the intermediate heat exchanger, and the second flow path absorbs the heat of the refrigerant in the first flow path;

[0088] In one embodiment, the compressor transfers the refrigerant to the intermediate heat exchanger and outputs it to the first flow path of the intermediate heat exchanger. The refrigerant can be a medium for transferring heat, and has the characteristics of easily absorbing heat to become gas and easily releasing heat to become liquid. Since the temperature of the refrigerant in the second flow path in the intermediate heat exchanger is lower than the temperature in the first flow path, according to the principle of temperature transmission from high temperature to low temperature, the refrigerant in the second flow path absorbs the heat of the refrigerant in the first flow path.

[0089] S202, obtaining a detected temperature of an inlet end of a first refrigerant pipe detected by a first temperature sensor;

[0090] In one embodiment, a detected temperature detected by a first temperature sensor disposed at an inlet port of the heat storage pipe is obtained. The detected temperature may be a temperature representing the temperature of the refrigerant when it reaches the inlet port of the first refrigerant pipe.

[0091] S203, obtaining a temperature difference between the detected temperature and a preset temperature, and comparing the temperature difference with the preset temperature difference;

[0092] In one embodiment, the difference between the detected temperature and the preset temperature is calculated to obtain the temperature difference between the detected temperature and the preset temperature, and the temperature difference is compared with the preset temperature difference. The preset temperature may be a temperature at which the refrigerant is in a saturated gas state and the liquid and gas in the refrigerant are in dynamic equilibrium.

[0093] Exemplarily, the detected temperature is 70° C. and the preset temperature is 67° C., and after calculating the difference between the detected temperature and the preset temperature, the obtained temperature difference is 3° C.

[0094] The preset temperature difference includes a first temperature, a second temperature and a third temperature, the first temperature is greater than the second temperature, and the second temperature is greater than the third temperature. For example, the first temperature may be 5°C, the second temperature may be 2°C, and the third temperature may be 0°C.

[0095] S204, determining an adjustment range and an adjustment direction of the bypass valve based on a comparison result of the temperature difference and a preset temperature difference;

[0096] In one embodiment, based on the comparison result between the temperature difference and the preset temperature, the adjustment amplitude and direction of the bypass valve are determined. The bypass valve can be a valve connected in parallel with the intermediate heat exchanger and connected at both ends of the intermediate heat exchanger, and is used to divert the refrigerant flowing through the intermediate heat exchanger. The adjustment amplitude can be the adjustment step number for controlling the bypass valve. The adjustment step number can be a preset unit adjustment angle, such as 30 degrees, etc. The adjustment direction can be a changing trend that characterizes the degree of closure of the bypass valve.

[0097] Specifically, if the temperature difference is greater than or equal to the first temperature, the adjustment amplitude of the bypass valve is determined to be the first step, and the adjustment direction of the bypass valve is to reduce the valve amplitude. It can be understood that since the temperature difference is greater than the first temperature, it can be considered that the temperature of the refrigerant reaching the first refrigerant pipe is much higher than the preset temperature, so it is necessary to reduce the detection temperature when the refrigerant reaches the first refrigerant pipe. By reducing the valve amplitude, more refrigerant can flow through the first flow path, so that more refrigerant is absorbed by the second flow path. Heat, resulting in a decrease in the temperature of the refrigerant reaching the first refrigerant pipe.

[0098] If the temperature difference is greater than or equal to the second temperature and less than the first temperature, the adjustment amplitude of the bypass valve is determined to be the second step number, and the adjustment direction of the bypass valve is to reduce the valve amplitude, wherein the second step number is less than the first step number. It is understandable that, since the temperature difference is greater than the second temperature, it is considered necessary to reduce the temperature of the refrigerant when it reaches the first refrigerant pipe, but the temperature difference is less than the first temperature, in order to avoid an excessively large adjustment amplitude causing the temperature of the refrigerant reaching the first refrigerant pipe to be lower than the third temperature, the second step number, which is less than the first step number, is used to adjust the degree of closure of the bypass valve.

[0099] If the temperature difference is less than or equal to the third temperature, the adjustment amplitude of the bypass valve is determined to be the third step number, and the adjustment direction of the bypass valve is to increase the valve amplitude, wherein the third step number may be the same as the second step number or may be different, and may be specifically set according to actual conditions. It is understandable that since the temperature difference is less than the third temperature, it can be considered that the temperature of the refrigerant reaching the first refrigerant pipe for heat storage in the heat exchange module is insufficient, and the heat storage effect is poor, so it is necessary to increase the valve amplitude of the bypass valve to increase the temperature of the refrigerant reaching the first refrigerant pipe.

[0100] Furthermore, in order to be able to adjust the temperature of the refrigerant reaching the first refrigerant pipe in time, a feasible method may be to obtain the detection temperature of the first temperature sensor in the first refrigerant pipe once every set time period, and the set time period may be 30 seconds, etc.

[0101] For example, Figure 4 As shown, Figure 4 The heat storage device includes a bypass valve 60 and a first temperature sensor 70. One end of the bypass valve 60 is connected to the inlet end of the first flow path 21 and the outlet end of the compressor 10. The other end of the bypass valve 60 is connected to the outlet end of the first flow path 21 and one end of the first refrigerant pipe 40. The first temperature sensor 70 is arranged at the inlet end of the first refrigerant pipe.

[0102] S205, adjusting the bypass valve by adjusting the adjustment range and the adjustment direction, and adjusting the temperature reduction range of the refrigerant in the first flow path based on the diversion of the refrigerant by the bypass valve;

[0103] In one embodiment, after determining the adjustment range and direction of the bypass valve, the bypass valve is adjusted using the adjustment range and direction, the refrigerant is diverted based on the closing degree of the bypass valve, and the degree of heat absorption of the refrigerant by the intermediate heat exchanger is controlled, thereby adjusting the temperature reduction range of the refrigerant by the first Liu Lu.

[0104] Further, if the detected temperature does not change within a preset time after the bypass valve is adjusted, and the temperature difference is greater than the first temperature, the heat storage device is controlled to be closed. It can be understood that if the detected temperature does not change after the bypass valve is adjusted, it can be considered that the bypass valve cannot cool the refrigerant, so in order to avoid excessive temperature from damaging the phase change material in the heat exchange module, the heat storage device is controlled to be closed.

[0105] Furthermore, the heat exchange module also includes a heat extraction pipe, which is connected to an energy release circuit. The energy release circuit inputs a heat extractor based on one end of the heat extraction pipe, and the heat extractor absorbs the heat of the phase change material, and the intermediate heat exchanger outputs the heat extractor after absorbing the heat into an energy release circuit based on the output value of the heat extraction pipe. The heat extraction pipe can be a transmission pipeline with the same material and structure as the heat storage pipe, and the energy release circuit can be a circuit for heating in a heat storage device, such as a circuit for heating stored water in a water heater, and the heat extractor can be a fluid with high efficiency in absorbing heat.

[0106] It should be noted that since heat extraction from the heat storage device does not require heating, even if the heat storage device has been shut down, heat extraction pipes can be used to extract heat and transfer the heat-absorbing agent that has absorbed heat to the energy release circuit.

[0107] For example, Figure 5 As shown, Figure 5 The heat exchange module 30 also includes a heat extraction pipe 33 , and the heat extraction pipe 33 is connected to the energy release circuit 80 .

[0108] Furthermore, the heat storage device further comprises at least one indoor unit, one end of each indoor unit is connected to the outlet end of the first flow path and the inlet end of the heat storage pipe, and the other end of each indoor unit is connected to the outlet end of the heat storage pipe and the inlet end of the second flow path. The indoor unit is connected in parallel with the heat exchange module, so that the refrigerant output by the intermediate heat exchanger is applied to one or more indoor units, and high-temperature refrigerant is provided to each indoor unit for operation, thereby improving the heat storage efficiency of the heat storage device.

[0109] For example, Figure 6 As shown, Figure 6 The heat storage device in the embodiment further includes an indoor unit 90, one end of which is connected to the outlet end of the first flow path 21 and one end of the first refrigerant pipe 40, and the other end of the indoor unit 90 is connected to one end of the second refrigerant pipe 50 and the inlet end of the second flow path 22. It should be noted that there may be one or more indoor units connected in parallel with the heat exchange module, which may be specifically arranged according to actual conditions.

[0110] S206, the second refrigerant pipe transmits the refrigerant to the expansion valve;

[0111] In one embodiment, the heat storage device also includes an expansion valve, which can be a component for decompressing the refrigerant. The second refrigerant pipe transmits the refrigerant to the expansion valve, and the expansion valve decompresses the refrigerant to control the phase of the refrigerant to switch from a first phase to a second phase. The first phase can be a saturated liquid state, and the second liquid state can be a gas-liquid two-phase state.

[0112] It can be understood that after the phase change material in the heat exchange module absorbs heat from the refrigerant, the phase of the refrigerant changes from saturated gas to saturated liquid. After the refrigerant is output from the second refrigerant pipe to the expansion valve, the expansion valve decompresses the refrigerant, causing the refrigerant to switch from a saturated liquid state to a gas-liquid two-phase state.

[0113] For example, Figure 7 As shown, Figure 7 The heat storage device further includes an expansion valve 100 and a heat exchanger 110 , one end of the expansion valve 100 is connected to the second refrigerant pipe 50 , and the other end of the expansion valve 100 is connected to one end of the heat exchanger 110 .

[0114] S207, the expansion valve transmits the refrigerant to the heat exchanger and the second flow path, the heat exchanger and the second flow path control the refrigerant to absorb heat, and transmits the refrigerant to the low-pressure tank based on the second flow path;

[0115] In one embodiment, the heat storage device also includes a heat exchanger and a low-pressure tank. After the expansion valve decompresses the refrigerant, the refrigerant is transferred to the heat exchanger and the second flow path of the intermediate heat exchanger. The heat exchanger and the second flow path control the refrigerant to absorb heat, and the refrigerant is transferred to the low-pressure tank based on the second flow path.

[0116] The heat exchanger may be a component for absorbing heat to increase the temperature of the refrigerant, and by absorbing the temperature of the refrigerant, the proportion of gas in the gas-liquid two-phase state of the refrigerant is increased, and the low-pressure tank may be a component for storing the refrigerant. It is understandable that, since the compressor in the heat storage device compresses the refrigerant in real time when the heat storage device is in the startup state, the refrigerant stored in the low-pressure tank is mainly liquid refrigerant, and the proportion of stored gaseous refrigerant is relatively small.

[0117] Furthermore, the heat storage device also includes a fan, which corresponds to the heat exchanger. The fan is used to compress the gas outside the heat storage device and blow it into the heat exchanger to enhance the heat absorption capacity of the heat exchanger.

[0118] Specifically, Figure 7 As shown, Figure 7 The heat storage device also includes a low-pressure tank 120 and a fan 130 . One end of the heat exchanger 110 is connected to the inlet end of the second flow path 22 , and the outlet end of the second flow path 22 is connected to one end of the low-pressure tank 120 .

[0119] S208, the compressor compresses the refrigerant obtained from the low-pressure tank and transmits the refrigerant to the intermediate heat exchanger based on the exhaust end;

[0120] In one embodiment, the compressor compresses the refrigerant output from the low-pressure tank and transmits the refrigerant to the intermediate heat exchanger based on the exhaust end of the compressor to form a loop for heat storage based on the refrigerant in the heat storage device.

[0121] Furthermore, in order to avoid the refrigerant temperature of the compressor being too high, which results in the temperature of the refrigerant reaching the first refrigerant pipe being too high after being cooled by the intermediate heat exchanger, and the phase change material in the heat exchange module being damaged due to the refrigerant at too high a temperature, the heat storage device also includes a second temperature sensor, and the second temperature sensor is arranged at the exhaust end of the compressor. A comparison is made based on the test temperature detected by the second temperature sensor to determine whether the temperature of the refrigerant output by the compressor is too high, and the working state of the heat storage device is controlled based on the test temperature.

[0122] Specifically, the method for controlling the working state of the heat storage device based on the test temperature can be: obtaining the test temperature of the refrigerant output from the exhaust end detected by the second temperature sensor, comparing the test temperature with the first safety temperature and the second safety temperature respectively, the first safety temperature is less than the second safety temperature, the first safety temperature can be 80°C, and the second safety temperature can be 85°C. The first safety temperature and the second safety temperature are used to judge the safety of the heat storage device, and the specific values ​​of the first safety temperature and the second safety temperature can be set according to actual conditions. If the test temperature is greater than the first safety temperature, the heat storage device is controlled to generate and output a prompt message to prompt the user that the temperature of the refrigerant output by the compressor is too high; if the test temperature is greater than the second safety temperature, the heat storage device is controlled to be shut down. It can be understood that since the test temperature is greater than the second safety temperature, the temperature of the refrigerant output by the compressor is too high, resulting in damage to the heat storage device, reducing the service life of the heat storage device, and even potential safety hazards. Therefore, in order to improve the reliability and safety of the heat storage device, the heat storage device can be controlled to be shut down.

[0123] The prompt information may be information indicating that the temperature of the refrigerant output by the compressor is too high, and may be text data, image data, audio data or video data. The specific content and specific data type of the prompt information may be set according to actual conditions.

[0124] For example, Figure 8 As shown, Figure 8 The heat storage device further includes a second temperature sensor 140, which is disposed at the exhaust end of the compressor.

[0125] Further, such as Figure 8 As shown, Figure 8 The heat storage device in the embodiment further includes a four-way valve 150, a first end of the four-way valve 150 is connected to the exhaust end of the compressor 10, a second end of the four-way valve 150 is connected to the inlet end of the first flow path 21, a third end of the four-way valve 150 is connected to the outlet end of the second flow path 22, and a fourth end of the four-way valve 150 is connected to the low-pressure tank 120. The four-way valve can be used to connect the first flow path and the second flow path of the compressor, the intermediate heat exchanger, and the low-pressure tank.

[0126] Further, such as Fig. 9 As shown, Fig. 9 The intermediate heat exchanger 20 and the bypass valve 60 in the heat exchanger 110 and the fan 130 are interchanged, the inlet end of the second flow path 22 of the intermediate heat exchanger 20 is connected to one end of the expansion valve 40, the outlet end of the second flow path 22 is connected to one end of the heat exchanger 110, and the other end of the heat exchanger 110 is connected to one end of the low-pressure tank 120. It can be understood that by interchanging the positions of the intermediate heat exchanger and the heat exchanger, the heating of the refrigerant by the heat exchanger can be reduced, the absorption efficiency of the second flow path absorbing the heat of the first flow path, and the ability of the intermediate heat exchanger to reduce the temperature of the refrigerant in the first flow path can be improved.

[0127] In the embodiment of the present specification, the temperature of the refrigerant input to the heat exchange module is set to a preset temperature by absorbing the heat of the refrigerant output by the compressor according to the intermediate heat exchanger, thereby achieving heat storage according to the heat exchange module while avoiding damage to the phase change material in the heat exchange module caused by the refrigerant with too high a temperature, thereby extending the service life of the heat storage device and improving the reliability of the heat storage device. Furthermore, the refrigerant is diverted by a bypass valve, and the closing degree of the bypass valve is adjusted according to the temperature of the refrigerant, thereby controlling the temperature of the refrigerant input to the heat exchange module and improving the reliability of the heat storage device; and the working state of the heat storage device is controlled by detecting the temperature of the refrigerant output by the compressor, thereby improving the reliability and safety of the heat storage device.

[0128] The present specification also provides a computer storage medium that can store multiple program instructions, which are suitable for being loaded and executed by a processor as described above. Figure 1-Figure 9 The method steps of the embodiment shown in the figure can be found in the specific implementation process. Figure 1-Figure 9 The specific description of the illustrated embodiment will not be repeated here.

[0129] See also Fig.10 , is a schematic diagram of the structure of a heat storage device provided in the embodiment of this specification. Fig.10As shown, the heat storage device 1000 may include: at least one processor 1001, such as a CPU, at least one network interface 1004, an input / output interface 1003, a memory 1005, and at least one communication bus 1002. The communication bus 1002 is used to realize the connection and communication between these components. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (non-volatile memory), such as at least one disk storage. The memory 1005 may optionally be at least one storage device located away from the aforementioned processor 1001. As shown in FIG. Fig.10 As shown, the memory 1004 as a computer storage medium may include an operating system, an input / output interface module, and a heat storage application.

[0130] exist Fig.10 In the heat storage device 1000 shown, the input-output interface 1003 is mainly used to provide an input interface for the user and obtain data input by the user.

[0131] In one embodiment, the processor 1001 may be used to call a heat storage application stored in the memory 1004, and specifically perform the following operations:

[0132] The refrigerant output by the compressor enters the first flow path of the intermediate heat exchanger, and the second flow path absorbs the heat of the refrigerant in the first flow path, reducing the temperature of the refrigerant reaching the outlet end of the heat storage pipe to a preset temperature;

[0133] The heat storage pipe of the heat exchange module allows the refrigerant to flow through the phase change material, and the phase change material absorbs the heat of the refrigerant to store heat;

[0134] The second refrigerant pipe inputs the refrigerant output from the outlet end of the heat storage pipe into the second flow path, and transmits the refrigerant to the air inlet end of the compressor based on the second flow path.

[0135] Optionally, the processor 1001 further performs the following operations:

[0136] Acquiring a detected temperature of the inlet end of the first refrigerant pipe detected by the first temperature sensor;

[0137] Acquire a temperature difference between the detected temperature and a preset temperature, and compare the temperature difference with the preset temperature difference, wherein the preset temperature difference includes a first temperature, a second temperature, and a third temperature, wherein the first temperature is greater than the second temperature, and the second temperature is greater than the third temperature;

[0138] Based on the comparison result of the temperature difference and the preset temperature difference, determining the adjustment range and adjustment direction of the bypass valve;

[0139] The bypass valve is adjusted by using the adjustment range and the adjustment direction, and based on the bypass valve's diversion of the refrigerant, the range of temperature reduction of the refrigerant by the first flow path is adjusted.

[0140] Optionally, when the processor 1001 determines the adjustment range and adjustment direction of the bypass valve based on the comparison result between the temperature difference and the preset temperature difference, the processor 1001 specifically performs the following operations:

[0141] If the temperature difference is greater than or equal to the first temperature, determining that the adjustment amplitude of the bypass valve is the first step, and the adjustment direction of the bypass valve is to reduce the valve amplitude;

[0142] If the temperature difference is greater than or equal to the second temperature and less than the first temperature, it is determined that the adjustment amplitude of the bypass valve is a second step number, the adjustment direction of the bypass valve is to reduce the valve amplitude, and the second step number is less than the first step number;

[0143] If the temperature difference is less than or equal to the third temperature, it is determined that the adjustment amplitude of the bypass valve is a third step number, and the adjustment direction of the bypass valve is to increase the valve amplitude.

[0144] Optionally, the processor 1001 further performs the following operations:

[0145] If the detected temperature does not change within a preset time after the bypass valve is adjusted, and the temperature difference is greater than the first temperature, the heat storage device is controlled to be closed.

[0146] Optionally, the processor 1001 further performs the following operations:

[0147] The second refrigerant pipe transmits the refrigerant to the expansion valve, and the expansion valve decompresses the refrigerant to control the phase of the refrigerant to switch from a first phase to a second phase;

[0148] The expansion valve transfers the refrigerant to the heat exchanger and the second flow path, the heat exchanger and the second flow path control the refrigerant to absorb heat, and transfers the refrigerant to the low-pressure tank based on the second flow path, and the low-pressure tank is used to store the refrigerant.

[0149] Optionally, the processor 1001 further performs the following operations:

[0150] The compressor compresses the refrigerant obtained from the low-pressure tank and transmits the refrigerant to the intermediate heat exchanger based on the exhaust end.

[0151] Optionally, the processor 1001 further performs the following operations:

[0152] The energy release circuit is based on inputting a heat extracting agent into one end of the heat extracting pipe, and the heat extracting agent absorbs the heat of the phase change material;

[0153] The intermediate heat exchanger outputs the heat-absorbing medium after absorbing heat to the energy-discharging circuit based on the heat-absorbing pipe.

[0154] Optionally, the processor 1001 further performs the following operations:

[0155] Acquire a test temperature of the refrigerant output from the exhaust end detected by the second temperature sensor, and compare the test temperature with a first safety temperature and a second safety temperature respectively, wherein the first safety temperature is lower than the second safety temperature;

[0156] If the test temperature is greater than the first safety temperature, controlling the heat storage device to generate and output a prompt message;

[0157] If the test temperature is greater than the second safety temperature, the heat storage device is controlled to be turned off.

[0158] Optional, such as Figure 1 As shown, Figure 1 The heat storage device includes a compressor 10, an intermediate heat exchanger 20, a heat exchange module 30, a first refrigerant pipe 40 and a second refrigerant pipe 50. The intermediate heat exchanger 20 includes a first flow path 21 and a second flow path 22. The heat exchange module 30 includes a heat storage pipe 31 and a phase change material 32. The exhaust end of the compressor 10 is connected to the inlet end of the first flow path 21, the outlet end of the first flow path 21 is connected to one end of the first refrigerant pipe 40, the other end of the first refrigerant pipe 40 is connected to the inlet end of the heat storage pipe 31, the outlet end of the heat storage pipe 31 is connected to one end of the second refrigerant pipe 50, the other end of the second refrigerant pipe 50 is connected to the inlet end of the second flow path 22, and the outlet end of the second flow path 22 is connected to the intake end of the compressor 10.

[0159] Optional, such as Figure 4 As shown, Figure 4 The heat storage device also includes a bypass valve 60 and a first temperature sensor 70. One end of the bypass valve 60 is connected to the inlet end of the first flow path 21 and the outlet end of the compressor 10, and the other end of the bypass valve 60 is connected to the outlet end of the first flow path 21 and one end of the first refrigerant pipe 40. The first temperature sensor 70 is arranged at the inlet end of the first refrigerant pipe.

[0160] Optional, such as Figure 5 As shown, Figure 5 The heat exchange module 30 also includes a heat extraction pipe 33 , which is connected to the energy release circuit 80 .

[0161] Optional, such as Figure 6 As shown, Figure 6 The heat storage device also includes an indoor unit 90, one end of the indoor unit 90 is connected to the outlet end of the first flow path 21 and one end of the first refrigerant pipe 40, and the other end of the indoor unit 80 is connected to one end of the second refrigerant pipe 50 and the inlet end of the second flow path 22.

[0162] Optional, such as Figure 7 As shown, Figure 7 The heat storage device further includes an expansion valve 100 and a heat exchanger 110 , one end of the expansion valve 100 is connected to the second refrigerant pipe 50 , and the other end of the expansion valve 100 is connected to one end of the heat exchanger 110 .

[0163] Optional, such as Figure 7 As shown, Figure 7 The heat storage device also includes a low-pressure tank 120 and a fan 130 . One end of the heat exchanger 110 is connected to the inlet end of the second flow path 22 , and the outlet end of the second flow path 22 is connected to one end of the low-pressure tank 120 .

[0164] Optional, such as Figure 8 As shown, Figure 8 The heat storage device further includes a second temperature sensor 140, which is disposed at the exhaust end of the compressor.

[0165] Optional, such as Figure 8 As shown, Figure 8 The heat storage device also includes a four-way valve 150, a first end of the four-way valve 150 is connected to the exhaust end of the compressor 10, a second end of the four-way valve 150 is connected to the inlet end of the first flow path 21, a third end of the four-way valve 150 is connected to the outlet end of the second flow path 22, and a fourth end of the four-way valve 150 is connected to the low-pressure tank 120.

[0166] Optionally, the inlet end of the second flow path 22 of the intermediate heat exchanger 20 is connected to one end of the expansion valve 100, the outlet end of the second flow path 22 is connected to one end of the heat exchanger 110, and the other end of the heat exchanger 110 is connected to one end of the low-pressure tank 120. Fig. 9 As shown, Fig. 9 The intermediate heat exchanger 20 and the bypass valve 60 are interchanged with the heat exchanger 110 and the fan 130, the inlet end of the second flow path 22 of the intermediate heat exchanger 20 is connected to one end of the expansion valve 40, the outlet end of the second flow path 22 is connected to one end of the heat exchanger 110, and the other end of the heat exchanger 110 is connected to one end of the low-pressure tank 120.

[0167] In the embodiment of the present specification, the temperature of the refrigerant input to the heat exchange module is set to a preset temperature by absorbing the heat of the refrigerant output by the compressor according to the intermediate heat exchanger, thereby achieving heat storage according to the heat exchange module while avoiding damage to the phase change material in the heat exchange module caused by the refrigerant with too high a temperature, thereby extending the service life of the heat storage device and improving the reliability of the heat storage device. Furthermore, the refrigerant is diverted by a bypass valve, and the closing degree of the bypass valve is adjusted according to the temperature of the refrigerant, thereby controlling the temperature of the refrigerant input to the heat exchange module and improving the reliability of the heat storage device; and the working state of the heat storage device is controlled by detecting the temperature of the refrigerant output by the compressor, thereby improving the reliability and safety of the heat storage device.

[0168] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0169] The above disclosure is only the preferred embodiment of this specification, which certainly cannot be used to limit the scope of rights of this specification. Therefore, equivalent changes made according to the claims of this specification are still within the scope covered by this specification.

Claims

1. A heat storage method, characterized in that: The method is applied to a heat storage device, the heat storage device comprising a compressor, an intermediate heat exchanger, a heat exchange module, a first refrigerant pipe and a second refrigerant pipe, the intermediate heat exchanger comprising a first flow path and a second flow path, the heat exchange module comprising a heat storage pipe and a phase change material; The exhaust end of the compressor is connected to the inlet end of the first flow path, the outlet end of the first flow path is connected to one end of the first refrigerant pipe, the other end of the first refrigerant pipe is connected to the inlet end of the heat storage pipe, the outlet end of the heat storage pipe is connected to one end of the second refrigerant pipe, the other end of the second refrigerant pipe is connected to the inlet end of the second flow path, and the outlet end of the second flow path is connected to the air intake end of the compressor; The method comprises: The refrigerant output by the compressor enters the first flow path of the intermediate heat exchanger, and the second flow path absorbs the heat of the refrigerant in the first flow path, reducing the temperature of the refrigerant reaching the outlet end of the heat storage pipe to a preset temperature; The heat storage pipe of the heat exchange module allows the refrigerant to flow through the phase change material, and the phase change material absorbs the heat of the refrigerant to store heat; The second refrigerant pipe inputs the refrigerant output from the outlet end of the heat storage pipe into the second flow path, and transmits the refrigerant to the air inlet end of the compressor based on the second flow path.

2. The method according to claim 1, characterized in that The heat storage device further includes a bypass valve and a first temperature sensor, one end of the bypass valve is connected to the inlet end of the first flow path and the air outlet end of the compressor, the other end of the bypass valve is connected to the outlet end of the first flow path and one end of the first refrigerant pipe, and the first temperature sensor is arranged at the inlet end of the first refrigerant pipe; The method further comprises: Acquiring a detected temperature of the inlet end of the first refrigerant pipe detected by the first temperature sensor; Obtaining a temperature difference between the detected temperature and a preset temperature, and comparing the temperature difference with the preset temperature difference, wherein the preset temperature difference includes a first temperature, a second temperature, and a third temperature, wherein the first temperature is greater than the second temperature, and the second temperature is greater than the third temperature; Based on the comparison result of the temperature difference and the preset temperature difference, determining the adjustment range and adjustment direction of the bypass valve; The bypass valve is adjusted by using the adjustment range and the adjustment direction, and based on the bypass valve's diversion of the refrigerant, the range of temperature reduction of the refrigerant by the first flow path is adjusted.

3. The method according to claim 2, characterized in that The step of determining the adjustment range and direction of the bypass valve based on the comparison result between the temperature difference and the preset temperature difference includes: If the temperature difference is greater than or equal to the first temperature, determining that the adjustment amplitude of the bypass valve is the first step, and the adjustment direction of the bypass valve is to reduce the valve amplitude; If the temperature difference is greater than or equal to the second temperature and less than the first temperature, it is determined that the adjustment amplitude of the bypass valve is a second step number, the adjustment direction of the bypass valve is to reduce the valve amplitude, and the second step number is less than the first step number; If the temperature difference is less than or equal to the third temperature, it is determined that the adjustment amplitude of the bypass valve is a third step number, and the adjustment direction of the bypass valve is to increase the valve amplitude.

4. The method according to claim 2, characterized in that: The method further comprises: If the detected temperature does not change within a preset time after the bypass valve is adjusted, and the temperature difference is greater than the first temperature, the heat storage device is controlled to be closed.

5. The method according to claim 1, characterized in that: The heat storage device also includes an expansion valve, a heat exchanger and a low-pressure tank; One end of the expansion valve is connected to the second refrigerant pipe, the other end of the expansion valve is connected to one end of the heat exchanger, the other end of the heat exchanger is connected to the inlet end of the second flow path, and the outlet end of the second flow path is connected to one end of the low-pressure tank; The method further comprises: The second refrigerant pipe transmits the refrigerant to the expansion valve, and the expansion valve decompresses the refrigerant to control the phase of the refrigerant to switch from a first phase to a second phase; The expansion valve transfers the refrigerant to the heat exchanger and the second flow path, the heat exchanger and the second flow path control the refrigerant to absorb heat, and transfers the refrigerant to the low-pressure tank based on the second flow path, and the low-pressure tank is used to store the refrigerant.

6. The method according to claim 5, characterized in that The other end of the low-pressure tank is connected to the air inlet end of the compressor, and the method further comprises: The compressor compresses the refrigerant obtained from the low-pressure tank and transmits the refrigerant to the intermediate heat exchanger based on the exhaust end.

7. The method according to claim 5, characterized in that The heat storage device also includes a four-way valve, a first end of the four-way valve is connected to the exhaust end of the compressor, a second end of the four-way valve is connected to the inlet end of the first flow path, a third end of the four-way valve is connected to the outlet end of the second flow path, and a fourth end of the four-way valve is connected to the low-pressure tank.

8. The method according to claim 1, characterized in that The heat exchange module further includes a heat extraction pipe, and the heat extraction pipe is connected to the energy release circuit; The method further comprises: The energy release circuit is based on inputting a heat extracting agent into one end of the heat extracting pipe, and the heat extracting agent absorbs the heat of the phase change material; The intermediate heat exchanger outputs the heat-absorbing medium after absorbing heat to the energy-discharging circuit based on the heat-absorbing pipe.

9. The method according to claim 1, characterized in that: The heat storage device further includes a second temperature sensor, which is disposed at the exhaust end of the compressor; The method further comprises: Acquire a test temperature of the refrigerant output from the exhaust end detected by the second temperature sensor, and compare the test temperature with a first safety temperature and a second safety temperature respectively, wherein the first safety temperature is lower than the second safety temperature; If the test temperature is greater than the first safety temperature, controlling the heat storage device to generate and output a prompt message; If the test temperature is greater than the second safety temperature, the heat storage device is controlled to be turned off.

10. The method according to claim 5, characterized in that The method further comprises: The inlet end of the second flow path of the intermediate heat exchanger is connected to one end of the expansion valve, the outlet end of the second flow path is connected to one end of the heat exchanger, and the other end of the heat exchanger is connected to one end of the low-pressure tank.

11. The method according to claim 1, characterized in that: The heat storage device also includes at least one indoor unit, one end of each indoor unit is connected to the outlet end of the first flow path and one end of the first refrigerant pipe, and the other end of each indoor unit is connected to one end of the second refrigerant pipe and the inlet end of the second flow path.

12. A heat storage device, the heat storage device comprising a compressor, an intermediate heat exchanger, a heat exchange module, a first refrigerant pipe and a second refrigerant pipe, the intermediate heat exchanger comprising a first flow path and a second flow path, the heat exchange module comprising a heat storage pipe and a phase change material; The exhaust end of the compressor is connected to the inlet end of the first flow path, the outlet end of the first flow path is connected to one end of the first refrigerant pipe, the other end of the first refrigerant pipe is connected to the inlet end of the heat storage pipe, the outlet end of the heat storage pipe is connected to one end of the second refrigerant pipe, the other end of the second refrigerant pipe is connected to the inlet end of the second flow path, and the outlet end of the second flow path is connected to the intake end of the compressor.

13. The device according to claim 12, characterized in that The heat storage device also includes a bypass valve and a first temperature sensor, one end of the bypass valve is connected to the inlet end of the first flow path and the outlet end of the compressor, the other end of the bypass valve is connected to the outlet end of the first flow path and one end of the first refrigerant pipe, and the first temperature sensor is arranged at the inlet end of the first refrigerant pipe.

14. The device according to claim 12, characterized in that The heat storage device also includes an expansion valve, a heat exchanger and a low-pressure tank; One end of the expansion valve is connected to the second refrigerant pipe, the other end of the expansion valve is connected to one end of the heat exchanger, the other end of the heat exchanger is connected to the inlet end of the second flow path, and the outlet end of the second flow path is connected to one end of the low-pressure tank.

15. The device according to claim 14, characterized in that The heat storage device also includes a four-way valve, a first end of the four-way valve is connected to the exhaust end of the compressor, a second end of the four-way valve is connected to the inlet end of the first flow path, a third end of the four-way valve is connected to the outlet end of the second flow path, and a fourth end of the four-way valve is connected to the low-pressure tank.

16. The device according to claim 12, characterized in that The heat exchange module also includes a heat extraction pipe, which is connected to the energy release circuit.

17. The device according to claim 12, characterized in that The inlet end of the second flow path of the intermediate heat exchanger is connected to one end of the expansion valve, the outlet end of the second flow path is connected to one end of the heat exchanger, and the other end of the heat exchanger is connected to one end of the low-pressure tank.

18. The device according to claim 12, characterized in that The heat storage device also includes at least one indoor unit, one end of each indoor unit is connected to the outlet end of the first flow path and the inlet end of the heat storage pipe, and the other end of each indoor unit is connected to the outlet end of the heat storage pipe and the inlet end of the second flow path.

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