Air conditioning system, control method, control device, and storage medium

Abstract

The application discloses an air conditioning system, a control method, a control device and a computer readable storage medium. The air conditioning system comprises: an air conditioning refrigeration system, the air conditioning refrigeration system comprising a refrigerant circuit, a fluorine pump, a compressor and a first switching assembly, the first switching assembly being configured to control the fluorine pump and the compressor to access and move out of the refrigerant circuit; a cold storage heat exchange system, the cold storage heat exchange system comprising a cooling liquid circuit, a cold storage device and a second switching assembly, the cooling liquid circuit comprising a second heat exchanger, the second heat exchanger being used for heat exchange with a load, the second switching assembly being connected with the cold storage device, the first heat exchanger and the second heat exchanger, the second switching assembly being configured to control the cold storage device to access and move out of the cooling liquid circuit; in the case that the cold storage device accesses the cooling liquid circuit, the cold storage device is configured to store the cold quantity of the first heat exchanger and supply cold to the second heat exchanger. In the air conditioning system, the energy consumption of the air conditioning system can be reduced to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of air conditioning and refrigeration technology, and in particular to an air conditioning system, control method, control device, and computer-readable storage medium. Background Technology

[0002] As a core infrastructure supporting the rapid development of industries such as 5G, the Internet of Things, and artificial intelligence, data centers have experienced explosive growth in recent years. However, their energy consumption is also expanding, currently accounting for over 60% of long-term operating costs, becoming a bottleneck restricting the industry's development. Since 40% of the energy consumed by data centers is used for cooling equipment operation, reducing the energy consumption of cooling equipment is one of the most effective ways to reduce data center PUE (Power Usage Effectiveness). Summary of the Invention

[0003] The present invention provides an air conditioning system, a control method, a control device, and a computer-readable storage medium to solve at least one of the above-mentioned technical problems.

[0004] An air conditioning system provided by an embodiment of the present invention includes: an air conditioning refrigeration system, the air conditioning refrigeration system including a refrigerant circuit, a refrigerant pump, a compressor and a first switching component, the first switching component being connected to the refrigerant circuit, the refrigerant pump and the compressor, and the first switching component being configured to control the refrigerant pump and the compressor to enter and exit the refrigerant circuit;

[0005] A cold storage and heat exchange system includes a coolant circuit, a cold storage device, and a second switching component. The coolant circuit and the refrigerant circuit are connected through a first heat exchanger. The coolant circuit includes a second heat exchanger for exchanging heat with a load. The second switching component is connected to the cold storage device, the first heat exchanger, and the second heat exchanger. The second switching component is configured to control the cold storage device to enter and exit the coolant circuit.

[0006] When the cold storage device is connected to the coolant circuit, the cold storage device is configured to store the cold energy of the first heat exchanger and to supply cold energy to the second heat exchanger.

[0007] In the aforementioned air conditioning system, on the one hand, the air conditioning refrigeration system can utilize the cooperation of the refrigerant pump, compressor, and first switching component to provide cooling capacity to the first heat exchanger using natural cold source and / or the mechanical cold source of the compressor. On the other hand, the cold storage and heat exchange system can utilize the cooperation of the cold storage device and the second switching component to enable the cold storage device to store the cooling capacity of the first heat exchanger and supply cooling to the second heat exchanger, thereby reducing the energy consumption of the air conditioning system to a certain extent.

[0008] In some embodiments, the first switching component includes a first valve and a second valve;

[0009] One end of the first valve is connected to the inlet of the refrigerant pump, and the other end is connected to the outlet of the refrigerant pump. The first switching component is configured to remove the refrigerant pump from the refrigerant circuit when the first valve is open, and to connect the refrigerant pump to the refrigerant circuit when the first valve is closed.

[0010] One end of the second valve is connected to the inlet of the compressor, and the other end is connected to the outlet of the compressor. The first switching component is configured to remove the compressor from the refrigerant circuit when the second valve is open, and to connect the compressor to the refrigerant circuit when the second valve is closed.

[0011] In some embodiments, the second switching assembly includes a first valve assembly and a second valve assembly, wherein the first valve assembly is connected to the outlet of the first heat exchanger, the inlet of the cold storage device and the inlet of the second heat exchanger, and the first valve assembly is configured to control whether the coolant flowing out of the first heat exchanger flows into the cold storage device;

[0012] The second valve assembly is connected to the outlet of the cold storage device, the inlet and outlet of the second heat exchanger and the inlet of the first heat exchanger. The second valve assembly is configured to control whether the coolant flowing out of the cold storage device flows back to the first heat exchanger through the second heat exchanger.

[0013] In some embodiments, the first valve assembly includes a third valve and a fourth valve, the third valve being connected to the outlet of the first heat exchanger and the inlet of the cold storage device, and the fourth valve being connected to the outlet of the first heat exchanger and the inlet of the second heat exchanger.

[0014] In some embodiments, the second valve assembly includes a fifth valve and a sixth valve, the fifth valve being connected to the outlet of the cold storage device and the outlet of the second heat exchanger, and the sixth valve being connected to the outlet of the cold storage device and the inlet of the second heat exchanger.

[0015] In some embodiments, the air conditioning system has a cooling mode and a cooling + cold storage mode. In the cooling mode, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger from one of the following cold sources: a refrigerant pump, a compressor, a refrigerant pump + a compressor, a cold storage device, a refrigerant pump + a cold storage device, a compressor + a cold storage device, or a refrigerant pump + a compressor + a cold storage device.

[0016] In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger from one of the following cold sources: a refrigerant pump, a compressor, or a refrigerant pump + compressor, and is configured to control the second switching component to store the cold energy of the first heat exchanger in the cold storage device.

[0017] In some embodiments, when the air conditioning system is powered off, the air conditioning system is configured to control the first switching component and the second switching component to cause the cold storage device to supply cooling to the second heat exchanger;

[0018] When the air conditioning system is powered on, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger from one of the following cold sources: a refrigerant pump, a compressor, a refrigerant pump + compressor, a refrigerant pump + cold storage device, a compressor + cold storage device, a refrigerant pump + compressor + cold storage device, and is configured to control the second switching component to store the cold energy of the first heat exchanger in the cold storage device.

[0019] In some implementations, when T0-T1 > T', the air conditioning system is configured to control the first switching component and the second switching component to cause the refrigerant pump to supply cooling to the second heat exchanger;

[0020] When T” < T0 - T1 ≤ T’, the air conditioning system is configured to control the first switching component and the second switching component to make the refrigerant pump + compressor supply cooling to the second heat exchanger, and the compressor operates at a first power.

[0021] When T0-T1≤T”, the air conditioning system is configured to control the first switching component and the second switching component to make the compressor supply cooling to the second heat exchanger, and the compressor operates at a second power.

[0022] Where T0 is the temperature of the coolant at the inlet of the second heat exchanger, T1 is the ambient temperature, T' is the first set value, T” is the second set value, T' > T”, and the first power is less than the second power.

[0023] In some embodiments, after the refrigerant pump cools the second heat exchanger, if Tb < T0 ≤ Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue to cool the second heat exchanger using the refrigerant pump.

[0024] After the refrigerant pump supplies cooling to the second heat exchanger, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger for a first preset duration using the refrigerant pump and cold storage device.

[0025] After the fluorine pump supplies cooling to the second heat exchanger, if T0≤Tb, the cooling + cold storage mode is entered.

[0026] In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component to make the refrigerant pump supply cooling to the second heat exchanger, and to control the second switching component to make the cold storage device store the cold energy of the first heat exchanger.

[0027] Where Ta is the first set temperature, Tb is the second set temperature, and Ta > Tb.

[0028] In some embodiments, after the refrigerant pump supplies cooling to the second heat exchanger and the second switching assembly is controlled to store the cooling capacity of the first heat exchanger in the cold storage device, if T0≤Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue supplying cooling to the second heat exchanger with the refrigerant pump and to continue controlling the second switching assembly to store the cooling capacity of the first heat exchanger in the cold storage device.

[0029] After the refrigerant pump supplies cooling to the second heat exchanger and the second switching component is controlled to allow the cold storage device to store the cooling capacity of the first heat exchanger, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to allow the refrigerant pump + cold storage device to supply cooling to the second heat exchanger for the first preset duration.

[0030] In some implementations, after the refrigerant pump and cold storage device have supplied cooling to the second heat exchanger for a first preset duration, if T0≤Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger by the refrigerant pump and cold storage device for the first preset duration.

[0031] After the refrigerant pump and cold storage device supply cooling to the second heat exchanger for a first preset time, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger via the refrigerant pump and compressor, with the compressor operating at a first power.

[0032] In some embodiments, after the refrigerant pump + compressor supplies cooling to the second heat exchanger and the compressor operates at a first power, if Tb < T0 ≤ Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger with the refrigerant pump + compressor, and the compressor operates at the first power.

[0033] After the refrigerant pump and compressor supply cooling to the second heat exchanger and the compressor operates at a first power, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger for a second preset duration using the refrigerant pump, compressor and cold storage device.

[0034] After the compressor operates at the first power and the fluorine pump supplies cooling to the second heat exchanger, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling supply + cold storage mode is entered.

[0035] In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component to make the refrigerant pump + compressor cool the second heat exchanger, and to control the second switching component to make the cold storage device store the cold energy of the first heat exchanger.

[0036] Where t is the current time, t1 is the first set time, t2 is the second set time, t∈[0h, 24h], and t1<t2.

[0037] In some embodiments, after the refrigerant pump and compressor supply cooling to the second heat exchanger and the second switching component is controlled to store the cooling capacity of the first heat exchanger in the cold storage device, if T0≤Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger with the refrigerant pump and compressor, and to control the second switching component to continue storing the cooling capacity of the first heat exchanger in the cold storage device.

[0038] After the refrigerant pump and compressor supply cooling to the second heat exchanger, and the second switching component is controlled to allow the cold storage device to store the cooling capacity of the first heat exchanger, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to allow the refrigerant pump, compressor, and cold storage device to supply cooling to the second heat exchanger for a second preset duration.

[0039] In some embodiments, after the refrigerant pump + compressor + cold storage device supplies cooling to the second heat exchanger for a second preset duration, if T0≤Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger for the second preset duration via the refrigerant pump + compressor + cold storage device.

[0040] After the refrigerant pump, compressor, and cold storage device supply cooling to the second heat exchanger for a second preset time, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger by the compressor, and the compressor operates at a second power.

[0041] In some embodiments, after the compressor is used to cool the second heat exchanger and the compressor operates at a second power, if Tb < T0 ≤ Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue to use the compressor to cool the second heat exchanger and the compressor operates at a second power.

[0042] After the compressor supplies cooling to the second heat exchanger and operates at a second power, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger for a third preset duration, and the compressor operates at a third power.

[0043] After the compressor supplies cooling to the second heat exchanger and operates at the second power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling supply + cold storage mode is entered.

[0044] In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component to make the compressor cool the second heat exchanger, and to control the second switching component to make the cold storage device store the cold energy of the first heat exchanger.

[0045] Where t is the current time, t1 is the first set time, t2 is the second set time, t∈[0h, 24h], and t1<t2.

[0046] In some embodiments, after the compressor supplies cooling to the second heat exchanger and the second switching component is controlled to store the cooling capacity of the first heat exchanger in the cold storage device, if T0≤Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger and to continue controlling the second switching component to store the cooling capacity of the first heat exchanger in the cold storage device.

[0047] After the compressor supplies cooling to the second heat exchanger and the second switching component is controlled to allow the cold storage device to store the cooling capacity of the first heat exchanger, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to allow the compressor + cold storage device to supply cooling to the second heat exchanger for a third preset duration, and the compressor operates at a third power.

[0048] In some embodiments, after the compressor and cold storage device supply cooling to the second heat exchanger for a third preset time and the compressor operates at a third power, if T0≤Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger for a third preset time and the compressor operates at a third power.

[0049] After the compressor and cold storage device supply cooling to the second heat exchanger for a third preset time, and the compressor operates at a third power, if T0 > Ta, the air conditioning system is configured to control the compressor to operate at a fourth power until T0 ≤ Ta.

[0050] The third power is less than the fourth power.

[0051] In some implementations, after controlling the compressor to operate at a fourth power until T0≤Ta, if T0>Tb, the air conditioning system is configured to control the first switching component and the second switching component to cause the compressor to supply cooling to the second heat exchanger, and the compressor operates at a second power;

[0052] After controlling the compressor to operate at the fourth power until T0≤Ta, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling supply + cold storage mode is entered.

[0053] In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component to enable the compressor to cool the second heat exchanger, and to control the second switching component to enable the cold storage device to store the cold energy of the first heat exchanger.

[0054] This invention provides a control method for an air conditioning system. The air conditioning system includes an air conditioning refrigeration system and a cold storage and heat exchange system. The air conditioning refrigeration system and the cold storage and heat exchange system are connected through a first heat exchanger. The cold storage and heat exchange system includes a cold storage device and a second heat exchanger for exchanging heat with a load. The air conditioning refrigeration system includes a natural cold source and a mechanical cold source, and the cold storage and heat exchange system includes a cold storage cold source.

[0055] The control method includes:

[0056] Based on the current signal, the temperature of the coolant at the inlet of the second heat exchanger, and the ambient temperature, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger by at least one of the natural cold source, the mechanical cold source, and the cold storage cold source, and the air conditioning refrigeration system is controlled to supply cooling to the cold storage device by at least one of the natural cold source and the mechanical cold source, and the cold storage heat exchange system is controlled to supply cooling to the second heat exchanger by the cold storage cold source.

[0057] In the above control method, the air conditioning refrigeration system and the cold storage heat exchange system can use at least one of the natural cold source, mechanical cold source and cold storage cold source to supply cooling for the second heat exchanger, and use at least one of the natural cold source and mechanical cold source to supply cooling for the cold storage device, thereby realizing flexible switching and efficient operation of multiple operating modes, which is beneficial to energy distribution and reducing the energy consumption of the air conditioning system.

[0058] In some embodiments, the control method includes:

[0059] When the current signal is normal, based on the temperature of the coolant at the inlet of the second heat exchanger and the ambient temperature, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger by at least one of the natural cold source, the mechanical cold source and the cold storage cold source, and the air conditioning refrigeration system is controlled to supply cooling to the cold storage device by at least one of the natural cold source and the mechanical cold source.

[0060] When the current signal is interrupted, the cold storage and heat exchange system is controlled to supply cooling to the second heat exchanger from the cold storage source.

[0061] In some embodiments, the control method includes:

[0062] When T0-T1>T', the air conditioning system is controlled to supply cooling to the second heat exchanger from the natural cold source;

[0063] When T” < T0-T1 ≤ T’, the air conditioning system is controlled to supply cooling to the second heat exchanger by the natural cold source and the mechanical cold source, and the mechanical cold source operates at the first power.

[0064] When T0-T1≤T”, the air conditioning refrigeration system is controlled to make the mechanical cold source supply cooling to the second heat exchanger, and the mechanical cold source operates at the second power.

[0065] Where T0 is the temperature of the coolant at the inlet of the second heat exchanger, T1 is the ambient temperature, T' is the first set value, T” is the second set value, T' > T”, and the first power is less than the second power.

[0066] In some embodiments, the control method includes:

[0067] After the natural cold source supplies cooling to the second heat exchanger, if Tb < T0 ≤ Ta, the air conditioning system is controlled to continue supplying cooling to the second heat exchanger using the natural cold source.

[0068] After the natural cold source supplies cooling to the second heat exchanger, if T0 > Ta, control the air conditioning refrigeration system and the cold storage heat exchange system to supply cooling to the second heat exchanger for a first preset time using the natural cold source and the cold storage cold source.

[0069] After the natural cold source supplies cooling to the second heat exchanger, if T0≤Tb, the cooling supply + cold storage mode is entered.

[0070] In the cooling + cold storage mode, the air conditioning system is controlled to supply cooling to the second heat exchanger from the natural cold source, and the air conditioning system is also controlled to supply cooling to the cold storage device from the natural cold source.

[0071] Where Ta is the first set temperature, Tb is the second set temperature, and Ta > Tb.

[0072] In some embodiments, the control method includes:

[0073] After the natural cold source supplies cooling to the second heat exchanger and the air conditioning system is controlled to supply cooling to the cold storage device, if T0≤Ta, the air conditioning system is controlled to continue supplying cooling to the second heat exchanger and the air conditioning system is controlled to continue supplying cooling to the cold storage device.

[0074] After the natural cold source supplies cooling to the second heat exchanger and the air conditioning system is controlled to supply cooling to the cold storage device, if T0 > Ta, the air conditioning system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time.

[0075] In some embodiments, the control method includes:

[0076] After the natural cold source and the cold storage cold source provide cooling to the second heat exchanger for a first preset time, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to continue to provide cooling to the second heat exchanger for the first preset time using the natural cold source and the cold storage cold source.

[0077] After the natural cold source and the cold storage cold source provide cooling to the second heat exchanger for a first preset time, if T0 > Ta, the air conditioning refrigeration system is controlled to provide cooling to the second heat exchanger using the natural cold source and the mechanical cold source, with the mechanical cold source operating at a first power.

[0078] In some embodiments, the control method includes:

[0079] After the natural cold source and the mechanical cold source supply cooling to the second heat exchanger, and the mechanical cold source operates at a first power, if Tb < T0 ≤ Ta, the air conditioning refrigeration system is controlled to continue supplying cooling to the second heat exchanger with the natural cold source and the mechanical cold source, and the mechanical cold source operates at the first power.

[0080] After the natural cold source and the mechanical cold source supply cooling to the second heat exchanger, and the mechanical cold source operates at a first power, if T0 > Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger for a second preset duration by the natural cold source, the mechanical cold source and the cold storage cold source.

[0081] After the natural cold source and the mechanical cold source supply cooling to the second heat exchanger, and the mechanical cold source operates at the first power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling supply + cold storage mode is entered.

[0082] In the cooling + cold storage mode, the air conditioning system is controlled to supply cooling to the second heat exchanger by the natural cold source and the mechanical cold source, and the air conditioning system is controlled to supply cooling to the cold storage device by the natural cold source and the mechanical cold source.

[0083] Where t is the current time, t1 is the first set time, t2 is the second set time, t∈[0h, 24h], and t1<t2.

[0084] In some embodiments, the control method includes:

[0085] After the natural cold source and the mechanical cold source supply cooling to the second heat exchanger, and the air conditioning system is controlled to supply cooling to the cold storage device using the natural cold source and the mechanical cold source, if T0≤Ta, the air conditioning system is controlled to continue supplying cooling to the second heat exchanger using the natural cold source and the mechanical cold source, and the air conditioning system is controlled to continue supplying cooling to the cold storage device using the natural cold source and the mechanical cold source.

[0086] After the natural cold source and the mechanical cold source supply cooling to the second heat exchanger, and the air conditioning system is controlled to supply cooling to the cold storage device using the natural cold source and the mechanical cold source, if T0 > Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger using the natural cold source, the mechanical cold source and the cold storage cold source for a second preset duration.

[0087] In some embodiments, the control method includes:

[0088] After the natural cold source, the mechanical cold source, and the cold storage cold source have provided cooling to the second heat exchanger for a second preset duration, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to continue providing cooling to the second heat exchanger for a second preset duration using the natural cold source, the mechanical cold source, and the cold storage cold source.

[0089] After the natural cold source, the mechanical cold source, and the cold storage cold source have provided cooling to the second heat exchanger for a second preset time, if T0 > Ta, the air conditioning refrigeration system is controlled to provide cooling to the second heat exchanger by the mechanical cold source, and the mechanical cold source operates at the second power.

[0090] In some embodiments, the control method includes:

[0091] After the mechanical cold source supplies cooling to the second heat exchanger and operates at the second power, if Tb < T0 ≤ Ta, the air conditioning refrigeration system is controlled to continue supplying cooling to the second heat exchanger with the mechanical cold source and operate at the second power.

[0092] After the mechanical cold source supplies cooling to the second heat exchanger and operates at a second power, if T0 > Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger for a third preset duration, and the mechanical cold source operates at a third power.

[0093] After the mechanical cold source supplies cooling to the second heat exchanger and the mechanical cold source operates at the second power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling supply + cold storage mode is entered.

[0094] In the cooling + cold storage mode, the air conditioning system is controlled to supply cooling to the second heat exchanger via the mechanical cold source, and the air conditioning system is also controlled to supply cooling to the cold storage device via the mechanical cold source.

[0095] Where t is the current time, t1 is the first set time, t2 is the second set time, t∈[0h, 24h], and t1<t2.

[0096] In some embodiments, the control method includes:

[0097] After the mechanical cold source supplies cooling to the second heat exchanger and the air conditioning system is controlled to supply cooling to the cold storage device, if T0≤Ta, the air conditioning system is controlled to continue supplying cooling to the second heat exchanger and the air conditioning system is controlled to continue supplying cooling to the cold storage device.

[0098] After the mechanical cold source supplies cooling to the second heat exchanger and the air conditioning system is controlled to supply cooling to the cold storage device, if T0 > Ta, the air conditioning system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger for a third preset duration, and the mechanical cold source operates at a third power.

[0099] In some embodiments, the control method includes:

[0100] After the cold storage source and the mechanical cold source supply cooling to the second heat exchanger for a third preset time, and the mechanical cold source operates at a third power, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to continue supplying cooling to the second heat exchanger for a third preset time, and the mechanical cold source operates at a third power.

[0101] After the cold storage source and the mechanical cold source supply cooling to the second heat exchanger for a third preset time, and the mechanical cold source operates at a third power, if T0 > Ta, the mechanical cold source supplies cooling to the second heat exchanger until T0 ≤ Ta, and the mechanical cold source operates at a fourth power.

[0102] The third power is less than the fourth power.

[0103] In some embodiments, the control method includes:

[0104] After the mechanical cold source supplies cooling to the second heat exchanger until T0≤Ta, and the mechanical cold source operates at the fourth power, if T0>Tb, the air conditioning refrigeration system is controlled to supply cooling to the second heat exchanger, and the mechanical cold source operates at the second power.

[0105] After the mechanical cold source supplies cooling to the second heat exchanger until T0≤Ta, and the mechanical cold source operates at the fourth power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, it enters the cooling supply + cold storage mode.

[0106] In the cooling + cold storage mode, the air conditioning system is controlled to supply cooling to the second heat exchanger via the mechanical cold source, and the air conditioning system is also controlled to supply cooling to the cold storage device via the mechanical cold source.

[0107] In some embodiments, the air conditioning refrigeration system includes a refrigerant circuit, a refrigerant pump, a compressor, and a first switching assembly. The first switching assembly is connected to the refrigerant circuit, the refrigerant pump, and the compressor. The first switching assembly is configured to control the refrigerant pump and the compressor to enter and exit the refrigerant circuit.

[0108] The cold storage and heat exchange system includes a coolant circuit, a cold storage device, and a second switching component. The coolant circuit and the refrigerant circuit are connected through a first heat exchanger. The coolant circuit includes a second heat exchanger for exchanging heat with the load. The second switching component is connected to the cold storage device, the first heat exchanger, and the second heat exchanger. The second switching component is configured to control the cold storage device to enter and exit the coolant circuit.

[0109] In some embodiments, the first switching component includes a first valve and a second valve;

[0110] One end of the first valve is connected to the inlet of the refrigerant pump, and the other end is connected to the outlet of the refrigerant pump. The first switching component is configured to remove the refrigerant pump from the refrigerant circuit when the first valve is open, and to connect the refrigerant pump to the refrigerant circuit when the first valve is closed.

[0111] One end of the second valve is connected to the inlet of the compressor, and the other end is connected to the outlet of the compressor. The first switching component is configured to remove the compressor from the refrigerant circuit when the second valve is open, and to connect the compressor to the refrigerant circuit when the second valve is closed.

[0112] In some embodiments, the second switching component includes a first valve assembly and a second valve assembly;

[0113] The first valve assembly is connected to the outlet of the first heat exchanger, the inlet of the cold storage device and the inlet of the second heat exchanger, and the first valve assembly is configured to control whether the coolant flowing out of the first heat exchanger flows into the cold storage device;

[0114] The second valve assembly is connected to the outlet of the cold storage device, the inlet and outlet of the second heat exchanger and the inlet of the first heat exchanger. The second valve assembly is configured to control whether the coolant flowing out of the cold storage device flows back to the first heat exchanger through the second heat exchanger.

[0115] This invention provides a control device for an air conditioning system, the control device including a processor and a memory;

[0116] The memory stores a computer program, which, when executed by the processor, implements the steps of the control method described in any of the above embodiments.

[0117] This invention provides an air conditioning system, which includes the control device described in the above embodiments.

[0118] This invention provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the control method described in any of the above embodiments.

[0119] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0120] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0121] Figure 1 This is a schematic diagram of the air conditioning system according to an embodiment of the present invention;

[0122] Figures 2 to 13 This is a flowchart illustrating the control method according to an embodiment of the present invention;

[0123] Figure 14 This is a schematic diagram of the control device according to an embodiment of the present invention.

[0124] Explanation of key figure labels:

[0125] Control device 2, memory 21, processor 22, air conditioning system 1000, air conditioning refrigeration system 100, cold storage and heat exchange system 200, first heat exchanger 101, second heat exchanger 201, third heat exchanger 102, refrigerant pump 103, compressor 104, throttling device 105, water pump 202, cold storage device 203, first switching assembly 106, second switching assembly 204, first valve 107, second valve 108, first valve assembly 205, second valve assembly 206, third valve 207, fourth valve 208, fifth valve 209, sixth valve 210. Detailed Implementation

[0126] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0127] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0128] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0129] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0130] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0131] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0132] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention.

[0133] Please see Figure 1 This invention provides an air conditioning system 1000. The air conditioning system 1000 includes an air conditioning refrigeration system 100 and a cold storage and heat exchange system 200. The air conditioning refrigeration system 100 includes a refrigerant circuit, a refrigerant pump 103, a compressor 104, and a first switching assembly 106. The first switching assembly 106 is connected to the refrigerant circuit, the refrigerant pump 103, and the compressor 104. The first switching assembly 106 is configured to control the refrigerant pump 103 and the compressor 104 to connect to and disconnect from the refrigerant circuit.

[0134] The cold storage and heat exchange system 200 includes a coolant circuit, a cold storage device 203, and a second switching assembly 204. The coolant circuit and the refrigerant circuit are connected via a first heat exchanger 101. The coolant circuit includes a second heat exchanger 201 for heat exchange with the load. The second switching assembly 204 is connected to the cold storage device 203, the first heat exchanger 101, and the second heat exchanger 201. The second switching assembly 204 is configured to control the connection and disconnection of the cold storage device 203 from the coolant circuit.

[0135] When the cold storage device 203 is connected to the coolant circuit, the cold storage device 203 is configured to store the cold energy of the first heat exchanger 101 and to supply cold energy to the second heat exchanger 201.

[0136] In the aforementioned air conditioning system 1000, on the one hand, the air conditioning refrigeration system 100 can utilize the cooperation of the refrigerant pump 103, the compressor 104 and the first switching component 106 to provide cooling capacity to the first heat exchanger 101 using natural cold source and / or the mechanical cold source of the compressor 104. On the other hand, the cold storage and heat exchange system 200 can utilize the cooperation of the cold storage device 203 and the second switching component 204 to enable the cold storage device 203 to store the cooling capacity of the first heat exchanger 101 and to supply cooling to the second heat exchanger 201, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0137] Specifically, the air conditioning system 1000 is a device used to regulate temperature. The load can be a heat-generating component of a data center, such as a server room. A data center is a facility used for centralized storage, management, and processing of large amounts of data. During operation, it generates a significant amount of heat, which may affect the normal operation of the data center and even impact environmental and personnel safety. To effectively control the temperature of the data center, this invention provides an air conditioning system 1000 for use in a data center. This system can ensure the normal operation of the data center to a certain extent, while also reducing the energy consumption of the air conditioning system 1000 to a certain degree, thereby reducing the data center's power usage effect (PUE) and alleviating long-term operating costs.

[0138] The air conditioning system 1000 includes an air conditioning refrigeration system 100 and a cold storage heat exchange system 200. The air conditioning refrigeration system 100 and the cold storage heat exchange system 200 are connected by a first heat exchanger 101 to achieve the transfer of cooling capacity. The air conditioning refrigeration system 100 can transfer the cooling capacity from natural cold sources and mechanical cold sources to the cold storage heat exchange system 200. The cold storage heat exchange system 200 can store the cooling capacity transferred by the air conditioning refrigeration system 100 and further transfer it to the load. Here, natural cold sources refer to the cooling capacity from the natural environment, that is, using low-temperature resources in nature for cooling. Mechanical cold sources refer to the cooling capacity provided by mechanical equipment (such as compressor 104), which requires energy to operate.

[0139] The air conditioning refrigeration system 100 includes a refrigerant pump 103, a compressor 104, a refrigerant circuit, and a first switching assembly 106. The refrigerant circuit may include a third heat exchanger 102, a throttling device 105, and a first heat exchanger 101.

[0140] A refrigerant pump 103 is a device used to circulate and deliver refrigerant (such as Freon) in a refrigerant circuit. During the refrigerant circulation process in the refrigerant circuit, cooling capacity can be transferred and exchanged, helping to lower the temperature of the load.

[0141] Throttling device 105 (such as an expansion valve or throttle valve) can reduce the pressure and temperature of the refrigerant by limiting the flow rate of the refrigerant circulating in the refrigerant circuit. Compressor 104 can increase the pressure and temperature of the refrigerant by compressing it. Throttling device 105 and compressor 104 can transfer and exchange more cooling capacity during the refrigerant circulation in the refrigerant circuit.

[0142] The first heat exchanger 101 and the third heat exchanger 102 are devices used to transfer heat (i.e., transfer cold energy) between different media. The first heat exchanger 101 enables heat exchange between the air conditioning refrigeration system 100 and the cold storage heat exchange system 200. The third heat exchanger 102 enables heat exchange between a natural cold source and the refrigerant circulating in the refrigerant circuit. The natural cold source can be low-temperature air, low-temperature water, or other low-temperature substances found in nature.

[0143] The first switching component 106 can be used to control the refrigerant pump 103 and compressor 104 to enter and exit the refrigerant circuit. That is, when the air conditioning system 1000 is in different working modes, the first switching component 106 can adjust whether the refrigerant pump 103 and compressor 104 participate in the refrigeration process.

[0144] The cold storage and heat exchange system 200 includes a coolant circuit, a cold storage device 203, and a second switching assembly 204. The coolant circuit may include a second heat exchanger 201 and a water pump 202.

[0145] Pump 202 is a device used to circulate and deliver coolant (such as water) in a coolant circuit. During the circulation of coolant in the coolant circuit, cooling capacity can be transferred and exchanged, helping to lower the temperature of the load.

[0146] The second heat exchanger 201 is a device used to transfer heat (i.e., transfer cold energy) between different media. The second heat exchanger 201 enables the cold storage heat exchange system 200 to exchange heat with the load.

[0147] The cold storage device 203 is a device that can store cold energy. It can store cold energy when demand is low and provide additional cooling capacity when demand is high or when the air conditioning system 100 fails, thereby reducing energy consumption and improving the operating efficiency of the air conditioning system 1000 to a certain extent.

[0148] The second switching component 204 can be used to control the connection and disconnection of the cold storage device 203 from the coolant circuit. That is, when the air conditioning system 1000 is in different working modes, the second switching component 204 can adjust whether the cold storage device 203 participates in the cooling process.

[0149] It should be noted that the second switching component 204 can control the connection and disconnection of the cold storage device 203 from the coolant circuit, thereby increasing the independence and flexibility of the cold storage device 203 to a certain extent. This facilitates the modularization of the air conditioning system 1000, helps optimize energy distribution, and ultimately reduces the energy consumption and improves the operating efficiency of the air conditioning system 1000. Simultaneously, when the cold storage device 203 malfunctions or requires maintenance, the air conditioning system 1000 can maintain normal operation to a certain extent.

[0150] It should be noted that the refrigerant pump 103 is used to circulate and deliver refrigerant in the refrigerant circuit. The water pump 202 is used to circulate and deliver coolant in the coolant circuit. In this invention, water pump 202 and refrigerant pump 103 are common terms in this technical field and should not be considered as limiting the refrigerant and coolant of this invention.

[0151] It should be noted that when the refrigerant flows in the refrigerant circuit, it can undergo a phase change, thereby absorbing and releasing heat. Refrigerants include, but are not limited to, alkanes, tetrafluoroethane, Freon, propane (R290), isobutane, etc., and this invention does not impose any limitations on them.

[0152] When coolant flows in the coolant circuit, its temperature changes (rises or falls), but a phase change does not occur substantially. Coolant includes, but is not limited to, water, ethylene glycol, and mixtures thereof (such as ethylene glycol-water mixtures), and this invention does not limit these categories.

[0153] It should be noted that the air conditioning system 1000 of the present invention can be used for various loads that require temperature control, among which data centers are a common application scenario in the field, but this should not be regarded as a specific limitation of the present invention.

[0154] It should be noted that the cold storage device 203 may include, but is not limited to, phase change material cold storage, water cold storage, or ice cold storage. In one embodiment, the cold storage device 203 is filled with a phase change material, the phase change point temperature of which is lower than a first set temperature but higher than the ambient temperature.

[0155] In some implementations, please refer to Figure 1 The first switching component 106 includes a first valve 107 and a second valve 108.

[0156] One end of the first valve 107 is connected to the inlet of the refrigerant pump 103, and the other end is connected to the outlet of the refrigerant pump 103. The first switching assembly 106 is configured to remove the refrigerant pump 103 from the refrigerant circuit when the first valve 107 is open, and to connect the refrigerant pump 103 to the refrigerant circuit when the first valve 107 is closed.

[0157] One end of the second valve 108 is connected to the inlet of the compressor 104, and the other end is connected to the outlet of the compressor 104. The first switching assembly 106 is configured to remove the compressor 104 from the refrigerant circuit when the second valve 108 is open, and to connect the compressor 104 to the refrigerant circuit when the second valve 108 is closed.

[0158] In the above embodiments, the first valve 107 can control the refrigerant pump 103 to enter and exit the refrigerant circuit, and the second valve 108 can control the compressor 104 to enter and exit the refrigerant circuit. Thus, the natural cold source and / or the mechanical cold source of the compressor 104 can be used to provide cooling capacity to the first heat exchanger 101, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0159] Specifically, the first valve 107 and the second valve 108 are components that control the flow of refrigerant by opening and closing channels.

[0160] With the first valve 107 open, the refrigerant pump 103 stops operating. Refrigerant flows from the inlet of the refrigerant pump 103 through the first valve 107 but without passing through the pump itself, to the outlet of the pump. In other words, the refrigerant pump 103 is removed from the refrigerant circuit. With the first valve 107 closed, the refrigerant pump 103 operates. Refrigerant flows from the inlet of the refrigerant pump 103 through the pump itself but without passing through the first valve 107, to the outlet of the pump. In other words, the refrigerant pump 103 is connected to the refrigerant circuit.

[0161] With the second valve 108 open, the compressor 104 stops operating. Refrigerant flows from the inlet of compressor 104 through the second valve 108 but without passing through the compressor itself to the outlet of compressor 104; in other words, compressor 104 is removed from the refrigerant circuit. With the second valve 108 closed, the compressor 104 operates. Refrigerant flows from the inlet of compressor 104 through the compressor itself but without passing through the second valve 108 to the outlet of compressor 104; in other words, compressor 104 is connected to the refrigerant circuit.

[0162] Optionally, the first valve 107 and the second valve 108 can be one-way valves used to restrict the flow direction of the refrigerant.

[0163] In some implementations, please refer to Figure 1 The second switching assembly 204 includes a first valve assembly 205 and a second valve assembly 206. The first valve assembly 205 is connected to the outlet of the first heat exchanger 101, the inlet of the cold storage device 203, and the inlet of the second heat exchanger 201. The first valve assembly 205 is configured to control whether the coolant flowing out of the first heat exchanger 101 flows into the cold storage device 203.

[0164] The second valve assembly 206 is connected to the outlet of the cold storage device 203, the inlet and outlet of the second heat exchanger 201, and the inlet of the first heat exchanger 101. The second valve assembly 206 is configured to control whether the coolant flowing out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201.

[0165] In the above embodiments, the first valve assembly 205 can control the connection and disconnection of the cold storage device 203 from the coolant circuit, and the second valve assembly 206 can control whether the cold storage device 203 stores the cold energy of the first heat exchanger 101. Thus, the cooperation between the cold storage device 203, the first valve assembly 205, and the second valve assembly 206 can enable the cold storage device 203 to store the cold energy of the first heat exchanger 101 and supply cooling to the second heat exchanger 201, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0166] Specifically, the first valve assembly 205 can control whether the coolant flowing out of the first heat exchanger 101 flows into the cold storage device 203. In one embodiment, the coolant flows from the outlet of the first heat exchanger 101 through the first valve assembly 205 to the inlet of the second heat exchanger 201, that is, the coolant flowing out of the first heat exchanger 101 does not flow into the cold storage device 203. In another embodiment, the coolant flows from the outlet of the first heat exchanger 101 through the first valve assembly 205 to the inlet of the cold storage device 203, that is, the coolant flowing out of the first heat exchanger 101 flows into the cold storage device 203.

[0167] The second valve assembly 206 can control whether the coolant flowing from the cold storage device 203 flows back to the first heat exchanger 101 via the second heat exchanger 201. In one embodiment, the coolant flows from the outlet of the cold storage device 203 through the second valve assembly 206 to the inlet of the second heat exchanger 201, and then flows back from the outlet of the second heat exchanger 201 to the inlet of the first heat exchanger 101; that is, the coolant flowing from the cold storage device 203 flows back to the first heat exchanger 101 via the second heat exchanger 201. In another embodiment, the coolant flows from the outlet of the cold storage device 203 through the second valve assembly 206 to the outlet of the second heat exchanger 201, and then flows back from the outlet of the second heat exchanger 201 to the inlet of the first heat exchanger 101; that is, the coolant flowing from the cold storage device 203 does not flow back to the first heat exchanger 101 via the second heat exchanger 201.

[0168] Understandably, if the coolant flowing out of the first heat exchanger 101 does not flow into the cold storage device 203, the first valve assembly 205 is configured to control the cold storage device 203 to move out of the coolant circuit. If the coolant flowing out of the first heat exchanger 101 flows into the cold storage device 203, the first valve assembly 205 is configured to control the cold storage device 203 to connect to the coolant circuit.

[0169] Understandably, when the coolant flowing from the cold storage device 203 returns to the first heat exchanger 101 via the second heat exchanger 201, the second valve assembly 206 is configured to control the cold storage device 203 to supply cooling to the second heat exchanger 201, meaning it does not store the cooling capacity of the first heat exchanger 101. When the coolant flowing from the cold storage device 203 does not return to the first heat exchanger 101 via the second heat exchanger 201, the second valve assembly 206 is configured to control the cold storage device 203 to store the cooling capacity of the first heat exchanger 101.

[0170] In summary, the first valve assembly 205 can control the connection and disconnection of the cold storage device 203 from the coolant circuit. When the cold storage device 203 is connected to the coolant circuit, the second valve assembly 206 can control the cold storage device 203 to store the cold energy of the first heat exchanger 101 and supply cold energy to the second heat exchanger 201.

[0171] Understandably, the first valve assembly 205 can control the connection and disconnection of the cold storage device 203 from the coolant circuit, thereby increasing the independence and flexibility of the cold storage device 203 to a certain extent. This facilitates the modularization of the air conditioning system 1000, helps optimize energy distribution, and ultimately reduces the energy consumption and improves the operating efficiency of the air conditioning system 1000. Simultaneously, when the cold storage device 203 malfunctions or requires maintenance, the air conditioning system 1000 can maintain normal operation to a certain extent.

[0172] In some implementations, please refer to Figure 1 The first valve assembly 205 includes a third valve 207 and a fourth valve 208. The third valve 207 is connected to the outlet of the first heat exchanger 101 and the inlet of the cold storage device 203. The fourth valve 208 is connected to the outlet of the first heat exchanger 101 and the inlet of the second heat exchanger 201.

[0173] In the above embodiments, the third valve 207 and the fourth valve 208 can control the connection and disconnection of the cold storage device 203 from the coolant circuit, which to a certain extent increases the independence and flexibility of the cold storage device 203. This facilitates the modularization of the air conditioning system 1000, thereby helping to optimize energy distribution, reduce the energy consumption of the air conditioning system 1000, and improve the operating efficiency of the air conditioning system 1000. Simultaneously, when the cold storage device 203 malfunctions or requires maintenance, it helps the air conditioning system 1000 maintain normal operation to a certain extent.

[0174] Specifically, the third valve 207 and the fourth valve 208 are components that control the flow of coolant by opening and closing channels.

[0175] In one embodiment, the third valve 207 is closed and the fourth valve 208 is open. Coolant flows from the outlet of the first heat exchanger 101 through the fourth valve 208 to the inlet of the second heat exchanger 201; that is, the third valve 207 and the fourth valve 208 are configured such that coolant flowing from the first heat exchanger 101 does not flow into the cold storage device 203. In another embodiment, the third valve 207 is open and the fourth valve 208 is open. Coolant flows from the outlet of the first heat exchanger 101 through both the third valve 207 and the fourth valve 208 to the inlet of the cold storage device 203 and the inlet of the second heat exchanger 201; that is, the third valve 207 and the fourth valve 208 are configured such that coolant flowing from the first heat exchanger 101 flows into the cold storage device 203. In yet another embodiment, the third valve 207 is open and the fourth valve 208 is closed. Coolant flows from the outlet of the first heat exchanger 101 through the third valve 207 to the inlet of the cold storage device 203. That is, the third valve 207 and the fourth valve 208 are configured so that the coolant flowing out of the first heat exchanger 101 flows into the cold storage device 203.

[0176] In some implementations, please refer to Figure 1 The second valve assembly 206 includes a fifth valve 209 and a sixth valve 210. The fifth valve 209 is connected to the outlet of the cold storage device 203 and the outlet of the second heat exchanger 201. The sixth valve 210 is connected to the outlet of the cold storage device 203 and the inlet of the second heat exchanger 201.

[0177] In the above embodiments, the fifth valve 209 and the sixth valve 210 can control whether the cold storage device 203 stores the cold energy of the first heat exchanger 101. Thus, the cooperation between the cold storage device 203, the fifth valve 209 and the sixth valve 210 can enable the cold storage device 203 to store the cold energy of the first heat exchanger 101 and supply cooling to the second heat exchanger 201, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0178] Specifically, the fifth valve 209 and the sixth valve 210 are components that control the flow of coolant by opening and closing channels.

[0179] In one embodiment, the fifth valve 209 is closed and the sixth valve is open. Coolant flows from the outlet of the cold storage device 203 through the sixth valve 210 to the inlet of the second heat exchanger 201, and then flows back from the outlet of the second heat exchanger 201 to the inlet of the first heat exchanger 101. That is, the fifth valve 209 and the sixth valve 210 are configured such that the coolant flowing from the cold storage device 203 flows back to the inlet of the first heat exchanger 101 via the second heat exchanger 201. In another embodiment, the fifth valve 209 is open and the sixth valve is closed. Coolant flows from the outlet of the cold storage device 203 through the fifth valve 209 to the inlet of the first heat exchanger 101. That is, the fifth valve 209 and the sixth valve 210 are configured such that the coolant flowing from the cold storage device 203 does not flow back to the inlet of the first heat exchanger 101 via the second heat exchanger 201.

[0180] In some implementations, please refer to Figure 1 and Figure 1 The air conditioning system 1000 has a cooling mode and a cooling + cold storage mode. In the cooling mode, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 from one of the following cold sources: refrigerant pump 103, compressor 104, refrigerant pump 103 + compressor 104, cold storage device 203, refrigerant pump 103 + cold storage device 203, compressor 104 + cold storage device 203, and refrigerant pump 103 + compressor 104 + cold storage device 203.

[0181] In the cooling + cold storage mode, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 from one of the following cold sources: refrigerant pump 103, compressor 104, refrigerant pump 103 + compressor 104, and to control the second switching component 204 to store the cold energy of the first heat exchanger 101 in the cold storage device 203.

[0182] In the above embodiments, the air conditioning system 1000 can control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 by different cold sources or combinations of cold sources, and control the second switching component 204 to store the cold energy of the first heat exchanger 101 in the cold storage device 203, thereby realizing flexible switching and efficient operation of multiple operating modes, which improves the operating efficiency and reliability of the air conditioning system 1000 to a certain extent.

[0183] Specifically, in cooling mode, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 from at least one of the following cold sources: natural cold source, mechanical cold source, and cold storage cold source. The refrigerant pump 103 corresponds to the natural cold source; the compressor 104 corresponds to the mechanical cold source; and the cold storage device 203 corresponds to the cold storage cold source.

[0184] When the air conditioning system 1000 is in cooling mode, the cold storage device 203 is configured not to store the cooling capacity of the first heat exchanger 101 and to supply cooling to the second heat exchanger 201. When the air conditioning system 1000 is in cooling + cold storage mode, the cold storage device 203 is configured to store the cooling capacity of the first heat exchanger 101.

[0185] Optionally, for ease of explanation of the embodiments of the present invention, the cooling mode may include mode 1, mode 3, mode 5, mode 7, mode 8, mode 9, and mode 10. The cooling + cold storage mode may include mode 2, mode 4, and mode 6.

[0186] In mode 1, the first switching component 106 and the second switching component 204 are controlled to make the refrigerant pump 103 supply cooling to the second heat exchanger 201, that is, the first valve 107 is closed, the second valve 108 is opened, the third valve 207 is closed, the fourth valve 208 is opened, the fifth valve 209 is closed, and the sixth valve 210 is closed.

[0187] In mode 2, the first switching component 106 and the second switching component 204 are controlled to enable the refrigerant pump 103 to supply cooling to the second heat exchanger 201, and the second switching component 204 is controlled to enable the cold storage device 203 to store the cold energy of the first heat exchanger 101. That is, the first valve 107 is closed, the second valve 108 is opened, the third valve 207 is opened, the fourth valve 208 is opened, the fifth valve 209 is opened, and the sixth valve 210 is closed.

[0188] In mode 3, the first switching component 106 and the second switching component 204 are controlled to make the refrigerant pump 103 and compressor 104 supply cooling to the second heat exchanger 201. The compressor 104 operates at the first power, which means controlling the first valve 107 to close, the second valve 108 to close, the third valve 207 to close, the fourth valve 208 to open, the fifth valve 209 to close, and the sixth valve 210 to close.

[0189] In mode 4, the first switching component 106 and the second switching component 204 are controlled to make the refrigerant pump 103 + compressor 104 supply cooling to the second heat exchanger 201, and the second switching component 204 is controlled to make the cold storage device 203 store the cold energy of the first heat exchanger 101. That is, the first valve 107 is closed, the second valve 108 is closed, the third valve 207 is open, the fourth valve 208 is open, the fifth valve 209 is open, and the sixth valve 210 is closed.

[0190] In mode 5, the first switching component 106 and the second switching component 204 are controlled to make the compressor 104 supply cooling to the second heat exchanger 201. The compressor 104 operates at the second power, that is, the first valve 107 is opened, the second valve 108 is closed, the third valve 207 is closed, the fourth valve 208 is opened, the fifth valve 209 is closed, and the sixth valve 210 is closed.

[0191] In mode 6, the first switching component 106 and the second switching component 204 are controlled to make the compressor 104 supply cooling to the second heat exchanger 201, and the second switching component 204 is controlled to make the cold storage device 203 store the cold energy of the first heat exchanger 101. That is, the first valve 107 is opened, the second valve 108 is closed, the third valve 207 is opened, the fourth valve 208 is opened, the fifth valve 209 is opened, and the sixth valve 210 is closed.

[0192] In mode 7, the first switching component 106 and the second switching component 204 are controlled to enable the cold storage device 203 to supply cooling to the second heat exchanger 201, that is, to control the third valve 207 to open, the fourth valve 208 to close, the fifth valve 209 to close, and the sixth valve 210 to open. The compressor 104 and the refrigerant pump 103 are stopped.

[0193] In mode 8, the first switching component 106 and the second switching component 204 are controlled to make the fluorine pump 103 and the cold storage device 203 supply cooling to the second heat exchanger 201, that is, the first valve 107 is closed, the second valve 108 is opened, the third valve 207 is opened, the fourth valve 208 is closed, the fifth valve 209 is closed, and the sixth valve 210 is opened.

[0194] In mode 9, the first switching component 106 and the second switching component 204 are controlled to make the refrigerant pump 103 + compressor 104 + cold storage device 203 supply cooling to the second heat exchanger 201, that is, the first valve 107 is closed, the second valve 108 is closed, the third valve 207 is opened, the fourth valve 208 is closed, the fifth valve 209 is closed, and the sixth valve 210 is opened.

[0195] In mode 10, the first switching component 106 and the second switching component 204 are controlled to make the compressor 104 and the cold storage device 203 supply cooling to the second heat exchanger 201, and the compressor 104 is controlled to operate at the third power, that is, the first valve 107 is opened, the second valve 108 is closed, the third valve 207 is opened, the fourth valve 208 is closed, the fifth valve 209 is closed, and the sixth valve 210 is opened.

[0196] It should be noted that the power of compressor 104 can be controlled by adjusting its rotational speed. The first power is less than the second power. In mode 3, the air conditioning system 1000 can utilize both natural and mechanical cold sources to cool the second heat exchanger 201, resulting in a slower compressor speed. In mode 3, the air conditioning system 1000 can utilize mechanical cold sources to cool the second heat exchanger 201, resulting in a faster compressor speed. It can be understood that the speed of compressor 104 is directly proportional to the amount of cooling capacity from the mechanical cold source. The speed of compressor 104 is directly proportional to the energy consumption of the air conditioning system 1000.

[0197] In some implementations, please refer to Figure 2 and Figure 1 When the air conditioning system 1000 loses power, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to make the cold storage device 203 supply cooling to the second heat exchanger 201.

[0198] When the air conditioning system 1000 is powered on, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 from one of the following cold sources: refrigerant pump 103, compressor 104, refrigerant pump 103 + compressor 104, refrigerant pump 103 + cold storage device 203, compressor 104 + cold storage device 203, refrigerant pump 103 + compressor 104 + cold storage device 203, and is configured to control the second switching component 204 to store the cold energy of the first heat exchanger 101 in the cold storage device 203.

[0199] In the above embodiments, when the air conditioning system 1000 is powered off, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to make the cold storage device 203 supply cooling to the second heat exchanger 201, which is beneficial to achieving the uninterrupted cooling requirements of the load.

[0200] Specifically, when the air conditioning system 1000 loses power, the cold storage source can function as an emergency cold source. At this time, the air conditioning refrigeration system 100 stops operating, and the air conditioning system 1000 is controlled to operating mode 7. During the operation of air conditioning system 1000 in operating mode 7, the water pump 202 can be powered by an emergency power source, such as a UPS (Uninterruptible Power Supply). Understandably, the capacity of the emergency power source is usually small and cannot support the normal operation of the entire air conditioning system 1000 for an extended period.

[0201] When the air conditioning system 1000 is powered on, different cold sources or combinations of cold sources can be used to make the air conditioning system 1000 operate in different modes according to needs.

[0202] It should be noted that, in Figure 2In the process, when the air conditioning system 1000 is in a power-off state, the current signal e = 1, which means the current signal is interrupted; when the air conditioning system 1000 is in a power-on state, the current signal e = 0, which means the current signal is normal.

[0203] In some implementations, please refer to Figure 2 and Figure 1 When T0-T1>T', the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to make the refrigerant pump 103 supply cooling to the second heat exchanger 201;

[0204] When T”<T0-T1≤T’, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to make the refrigerant pump 103+compressor 104 supply cooling to the second heat exchanger 201, and the compressor 104 operates at the first power.

[0205] When T0-T1≤T”, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to make the compressor 104 supply cooling to the second heat exchanger 201, and the compressor 104 operates at the second power.

[0206] Where T0 is the temperature of the coolant at the inlet of the second heat exchanger 201, T1 is the ambient temperature, T' is the first set value, T” is the second set value, T'>T” is the first power less than the second power.

[0207] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the ambient temperature T1. This effectively adjusts the mechanical cold source dynamically according to the surplus or deficit of the natural cold source to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling requirements of the load while reducing the energy consumption of the air conditioning system 1000.

[0208] Specifically, when the air conditioning system 1000 is powered on: when T0-T1>T', the air conditioning system 1000 operates in mode 1; when T”<T0-T1≤T', the air conditioning system 1000 operates in mode 3; and when T0-T1≤T”, the air conditioning system 1000 operates in mode 5.

[0209] It is understandable that when the air conditioning system 1000 is powered on, when the temperature difference between the coolant at the inlet of the second heat exchanger 201, T0, and the ambient temperature, T1 is large, that is, when the cooling capacity of the natural cold source is sufficient, the operation mode 1 can make full use of the natural cold source to provide cooling for the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0210] When the temperature difference between the coolant at the inlet of the second heat exchanger 201, T0, and the ambient temperature, T1, is moderate, that is, when the cooling capacity of the natural cold source is moderate, operating mode 3 can introduce an appropriate amount of mechanical cold source on the basis of the natural cold source to jointly supply cooling for the load, thereby ensuring that the cooling requirements of the load are met to a certain extent.

[0211] When the temperature difference between the coolant at the inlet of the second heat exchanger 201, T0, and the ambient temperature, T1 is small, that is, when the cooling capacity of the natural cold source is insufficient, operating mode 5 can allow the mechanical cold source to completely replace the natural cold source to supply cooling for the load, which to a certain extent ensures that a good cooling effect is maintained at a higher ambient temperature.

[0212] It should be noted that the amount of cooling capacity of the natural cold source is directly proportional to T0-T1.

[0213] The first setpoint T' can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the first setpoint T' = 10°C.

[0214] The second setting value T” can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the second setting value T” = 5℃.

[0215] In some implementations, please refer to Figure 2 and Figure 1 After the refrigerant pump 103 supplies cooling to the second heat exchanger 201, if Tb < T0 ≤ Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to continue supplying cooling to the second heat exchanger 201 by the refrigerant pump 103.

[0216] After the refrigerant pump 103 supplies cooling to the second heat exchanger 201, if T0 > Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 by the refrigerant pump 103 + cold storage device 203 for a first preset time.

[0217] After the refrigerant pump 103 supplies cooling to the second heat exchanger 201, if T0≤Tb, it enters the cooling supply + cold storage mode.

[0218] In the cooling + cold storage mode, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to make the refrigerant pump 103 supply cooling to the second heat exchanger 201, and to control the second switching component 204 to make the cold storage device 203 store the cold energy of the first heat exchanger 101.

[0219] Where Ta is the first set temperature, Tb is the second set temperature, and Ta > Tb.

[0220] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201, the first set temperature Ta, and the second set temperature Tb. This effectively adjusts the cold storage source dynamically according to the cooling demand of the air conditioning system 1000 to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0221] Specifically, when the air conditioning system 1000 is in mode 1: if Tb < T0 ≤ Ta, the air conditioning system 1000 continues to operate in mode 1; if T0 > Ta, the air conditioning system 1000 operates in mode 8 for the first preset duration; if T0 ≤ Tb, the air conditioning system 1000 operates in mode 2.

[0222] It is understandable that when the air conditioning system 1000 is in mode 1: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta and greater than the second set temperature Tb, that is, when the cooling demand of the air conditioning system 1000 is moderate, mode 1 continues to be operated to utilize the natural cold source as the load for cooling, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0223] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling demand of the air conditioning system 1000 is high, the first preset duration of the operation mode 8 can make full use of the natural cold source and further utilize the cold storage cold source to cool the load. This is beneficial to meeting the cooling demand of the load and reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0224] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb, that is, when the cooling demand of the air conditioning system 1000 is low, the operation mode 2 can make full use of the natural cold source to cool the load, while using the surplus cold energy of the natural cold source to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cold energy of the natural cold source as a backup, further making full use of the natural cold source and reducing the energy consumption of the air conditioning system 1000.

[0225] It should be noted that the cooling demand of the air conditioning system 1000 is directly proportional to the size of T0.

[0226] The first set temperature Ta can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the first set temperature Ta ∈ (15℃, 21℃).

[0227] The second set temperature Tb can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the first set temperature Tb = Ta - 2℃.

[0228] The first preset duration can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the first preset duration is 5 minutes.

[0229] In some implementations, please refer to Figure 2 and Figure 1 After the refrigerant pump 103 supplies cooling to the second heat exchanger 201 and the second switching component 204 is controlled to allow the cold storage device 203 to store the cooling capacity of the first heat exchanger 101, if T0≤Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to continue supplying cooling to the second heat exchanger 201 with the refrigerant pump 103 and to continue allowing the cold storage device 203 to store the cooling capacity of the first heat exchanger 101.

[0230] After the refrigerant pump 103 supplies cooling to the second heat exchanger 201 and the second switching component 204 controls the cold storage device 203 to store the cooling capacity of the first heat exchanger 101, if T0 > Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 by the refrigerant pump 103 and the cold storage device 203 for a first preset time.

[0231] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively adjusts the cold storage source dynamically according to the surplus or deficit of the natural cold source to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0232] Specifically, when the air conditioning system 1000 is in mode 2: if T0≤Ta, the air conditioning system 1000 continues to operate in mode 2; if T0>Ta, the air conditioning system 1000 operates in mode 8 for the first preset duration.

[0233] It is understandable that when the air conditioning system 1000 is in mode 2: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when there is still surplus cooling capacity from the natural cold source, mode 2 continues to operate to fully utilize the natural cold source to supply cooling for the load, while using the surplus cooling capacity from the natural cold source to supply cooling for the cold storage device 203 so that the cold storage device 203 can store the surplus cooling capacity from the natural cold source as a backup, thereby further making full use of the natural cold source and reducing the energy consumption of the air conditioning system 1000.

[0234] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling capacity of the natural cold source is insufficient, the first preset duration of the operation mode 8 can make full use of the natural cold source and further utilize the cold storage cold source to provide cooling for the load. This is beneficial to meeting the cooling needs of the load and, to a certain extent, reducing the energy consumption of the air conditioning system 1000.

[0235] It should be noted that when the air conditioning system 1000 is in mode 2: when T0 > Ta, the air conditioning system 1000 switches from mode 2 to mode 8, that is, from mode 2 of cooling supply + cold storage mode to mode 8 of cooling supply mode. At this time, the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged, and the cold storage heat exchange system 200 is first configured to stop storing cold capacity, and then configured to supply cooling to the second heat exchanger 201.

[0236] Understandably, in Figure 2 In the case where the air conditioning system 1000 is in mode 2: If T0 > Ta, the air conditioning system 1000 first switches to mode 1, meaning the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged, and the cold storage heat exchange system 200 is initially configured to stop storing cold capacity. Since T0 > Ta is still satisfied at this time, the air conditioning system 1000 switches from mode 1 to mode 8, meaning the cold storage heat exchange system 200 is then configured to supply cooling to the second heat exchanger 201. In some embodiments, please refer to... Figure 2 and Figure 1 After the refrigerant pump 103 and the cold storage device 203 supply cooling to the second heat exchanger 201 for a first preset time, if T0≤Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to continue supplying cooling to the second heat exchanger 201 for the first preset time.

[0237] After the refrigerant pump 103 and the cold storage device 203 supply cooling to the second heat exchanger 201 for a first preset time, if T0 > Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 via the refrigerant pump 103 and the compressor 104, with the compressor 104 operating at a first power.

[0238] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively and dynamically adjusts the mechanical cold source according to the cooling capacity to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0239] Specifically, after the first preset duration of the air conditioning system 1000 operating mode 8: if T0≤Ta, the air conditioning system 1000 continues to operate mode 8 for the first preset duration; if T0>Ta, the air conditioning system 1000 operates mode 3.

[0240] Understandably, after the first preset time of the air conditioning system 1000 operating mode 8: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when the natural cold source and the cold storage cold source can meet the cooling demand of the air conditioning system 1000, the operating mode 8 continues to utilize the natural cold source and the cold storage cold source to jointly supply cooling for the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0241] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the natural cold source and the cold storage cold source cannot meet the cooling demand of the air conditioning system 1000, the operation mode 3 introduces an appropriate amount of mechanical cold source on the basis of the natural cold source to jointly supply cooling for the load, thereby ensuring that the cooling demand of the load is met to a certain extent.

[0242] In some implementations, please refer to Figure 2 and Figure 1 After the refrigerant pump 103 and compressor 104 supply cooling to the second heat exchanger 201 and the compressor 104 operates at the first power, if Tb < T0 ≤ Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to continue supplying cooling to the second heat exchanger 201 with the refrigerant pump 103 and compressor 104 and the compressor 104 operating at the first power.

[0243] After the refrigerant pump 103 and compressor 104 supply cooling to the second heat exchanger 201 and the compressor 104 operates at the first power, if T0 > Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 for a second preset time.

[0244] After the refrigerant pump 103 supplies cooling to the second heat exchanger 201 and the compressor 104 operates at the first power, if T0≤Tb, t≤t1, or T0≤Tb and t≥t2, the system enters the cooling supply + cold storage mode.

[0245] In the cooling + cold storage mode, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to make the refrigerant pump 103 + compressor 104 supply cooling to the second heat exchanger 201, and to control the second switching component 204 to make the cold storage device 203 store the cold energy of the first heat exchanger 101.

[0246] Where t is the current time, t1 is the first set time, t2 is the second set time, t∈[0h, 24h], and t1<t2.

[0247] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201, the first set temperature Ta, and the second set temperature Tb. This effectively adjusts the cold storage source dynamically according to the cooling demand and time of the air conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0248] Specifically, when the air conditioning system 1000 is in mode 3: if Tb < T0 ≤ Ta, the air conditioning system 1000 continues to operate in mode 3; if T0 > Ta, the air conditioning system 1000 operates in mode 9 for the second preset duration; if T0 ≤ Tb and t ≤ t1, or if T0 ≤ Tb and t ≥ t2, the air conditioning system 1000 operates in mode 4.

[0249] It is understandable that when the air conditioning system 1000 is in mode 3: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta and greater than the second set temperature Tb, that is, when the cooling demand of the air conditioning system 1000 is moderate, mode 3 continues to be operated to utilize natural cold sources and mechanical energy to provide cooling for the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0250] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling demand of the air conditioning system 1000 is high, the second preset duration of the operation mode 9 can make full use of natural cold source and mechanical cold source, and further utilize the cold storage cold source to provide cooling for the load. This is beneficial to meeting the cooling demand of the load and reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0251] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and t≤t1, or T0≤Tb and t≥t, that is, when the cooling demand of the air conditioning system 1000 is low and within the set time period, the operation mode 4 can meet the time requirements and make full use of the natural cold source and mechanical cold source to cool the load, while using the surplus cooling capacity of the natural cold source and mechanical cold source to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cooling capacity of the natural cold source and mechanical cold source as a backup, further making full use of the natural cold source and mechanical cold source and reducing the energy consumption of the air conditioning system 1000.

[0252] It should be noted that the cooling demand of the air conditioning system 1000 is directly proportional to the size of T0.

[0253] The current time t∈[0h,24h] means that the range of the current time t is 0≤t≤24, which is also the 24 hours (h) of a day.

[0254] The first set time t1 and the second set time t2 can be set according to factors such as peak and off-peak electricity prices and environmental conditions. In one embodiment, the first set time t1 = 5:00 (i.e., 5:00 AM) and the second set time t2 = 22:00 (i.e., 10:00 PM).

[0255] The second preset duration can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the second preset duration is 5 minutes.

[0256] In some implementations, please refer to Figure 2 and Figure 1 After the refrigerant pump 103 and compressor 104 supply cooling to the second heat exchanger 201, and the second switching component 204 is controlled to allow the cold storage device 203 to store the cooling capacity of the first heat exchanger 101, if T0≤Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to continue supplying cooling to the second heat exchanger 201 with the refrigerant pump 103 and compressor 104, and to control the second switching component 204 to continue allowing the cold storage device 203 to store the cooling capacity of the first heat exchanger 101.

[0257] After the refrigerant pump 103 and compressor 104 supply cooling to the second heat exchanger 201, and the second switching component 204 is controlled to allow the cold storage device 203 to store the cooling capacity of the first heat exchanger 101, if T0 > Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 for a second preset duration.

[0258] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively adjusts the cold storage source dynamically based on the surplus or deficit of the natural and mechanical cold sources to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling requirements of the load while reducing the energy consumption of the air conditioning system 1000.

[0259] Specifically, when the air conditioning system 1000 is in mode 4: if T0≤Ta, the air conditioning system 1000 continues to operate in mode 4; if T0>Ta, the air conditioning system 1000 operates in mode 9 for the second preset duration.

[0260] It is understandable that when the air conditioning system 1000 is in mode 4: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when there is still surplus cooling capacity in the natural cold source and the mechanical cold source, mode 4 continues to operate to make full use of the natural cold source and the mechanical cold source to supply cooling for the load, while using the surplus cooling capacity of the natural cold source and the mechanical cold source to supply cooling for the cold storage device 203 so that the cold storage device 203 can store the surplus cooling capacity of the natural cold source and the mechanical cold source as a backup, thereby making full use of the natural cold source and the mechanical cold source and reducing the energy consumption of the air conditioning system 1000.

[0261] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling capacity of the natural cold source and the mechanical cold source is insufficient, the second preset duration of the operation mode 9 can make full use of the natural cold source and the mechanical cold source, and further utilize the cold storage cold source to provide cooling for the load. This is beneficial to meeting the cooling needs of the load and, to a certain extent, reducing the energy consumption of the air conditioning system 1000.

[0262] It should be noted that when the air conditioning system 1000 is in mode 4: when T0 > Ta, the air conditioning system 1000 switches from mode 4 to mode 9, that is, from mode 4 of cooling supply + cold storage mode to mode 9 of cooling supply mode. At this time, the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged, and the cold storage heat exchange system 200 is first configured to stop storing cold capacity, and then configured to supply cooling to the second heat exchanger 201.

[0263] Understandably, in Figure 2 When the air conditioning system 1000 is in mode 4: under the condition that T0 > Ta, the air conditioning system 1000 first switches to mode 3, that is, the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged, the cold storage heat exchange system 200 is first configured to stop storing cold capacity, and since T0 > Ta is still satisfied at this time, the air conditioning system 1000 switches from mode 3 to mode 9, that is, the cold storage heat exchange system 200 is then configured to supply cooling to the second heat exchanger 201.

[0264] In some implementations, please refer to Figure 2 and Figure 1 After the refrigerant pump 103 + compressor 104 + cold storage device 203 provides cooling to the second heat exchanger 201 for a second preset time, if T0≤Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to continue to provide cooling to the second heat exchanger 201 for a second preset time using the refrigerant pump 103 + compressor 104 + cold storage device 203.

[0265] After the refrigerant pump 103 + compressor 104 + cold storage device 203 provides cooling to the second heat exchanger 201 for a second preset time, if T0 > Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to make the compressor 104 provide cooling to the second heat exchanger 201, and the compressor 104 operates at the second power.

[0266] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively and dynamically adjusts the mechanical cold source according to the cooling capacity to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0267] Specifically, after the second preset duration of the air conditioning system 1000 operating mode 9: if T0≤Ta, the air conditioning system 1000 continues to operate mode 9 for the second preset duration; if T0>Ta, the air conditioning system 1000 operates mode 5.

[0268] Understandably, after the second preset duration of the air conditioning system 1000 operating mode 9: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when the appropriate amount of mechanical cold source and cold storage cold source can meet the cooling demand of the air conditioning system 1000, the second preset duration of the operating mode 9 continues to utilize the mechanical cold source and cold storage cold source to jointly supply cooling for the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0269] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the appropriate amount of mechanical cold source and cold storage cold source cannot meet the cooling demand of the air conditioning system 1000, the operation mode 5 intervenes with more mechanical cold source so that the mechanical cold source completely replaces the natural cold source to supply cooling for the load, thereby ensuring that the cooling demand of the load is met to a certain extent.

[0270] In some implementations, please refer to Figure 2 and Figure 1 After the compressor 104 supplies cooling to the second heat exchanger 201 and the compressor 104 operates at the second power, if Tb < T0 ≤ Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to continue to supply cooling to the second heat exchanger 201 and the compressor 104 operates at the second power.

[0271] After the compressor 104 supplies cooling to the second heat exchanger 201 and the compressor 104 operates at the second power, if T0 > Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 by the compressor 104 + cold storage device 203 for a third preset duration, and the compressor 104 operates at the third power.

[0272] After the compressor 104 supplies cooling to the second heat exchanger 201 and the compressor 104 operates at the second power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, it enters the cooling supply + cold storage mode.

[0273] In the cooling + cold storage mode, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to make the compressor 104 supply cooling to the second heat exchanger 201, and to control the second switching component 204 to make the cold storage device 203 store the cold energy of the first heat exchanger 101.

[0274] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201, the first set temperature Ta, and the second set temperature Tb. This effectively adjusts the cold storage source dynamically according to the cooling demand and time of the air conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0275] Specifically, when the air conditioning system 1000 is in mode 5: if Tb < T0 ≤ Ta, the air conditioning system 1000 continues to operate in mode 5; if T0 > Ta, the air conditioning system 1000 operates in mode 10 for the third preset duration; if T0 ≤ Tb and t ≤ t1, or if T0 ≤ Tb and t ≥ t2, the air conditioning system 1000 operates in mode 6.

[0276] It is understandable that when the air conditioning system 1000 is in mode 5: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta and greater than the second set temperature Tb, that is, when the cooling capacity of the natural cold source is insufficient and the cooling demand of the air conditioning system 1000 is moderate, mode 5 continues to be operated to utilize the mechanical cold source as the load for cooling, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0277] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling demand of the air conditioning system 1000 is high, the third preset duration of the operation mode 10 can make full use of the mechanical cold source and further utilize the cold storage cold source to cool the load. This is beneficial to meeting the cooling demand of the load and reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0278] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and t≤t1, or T0≤Tb and t≥t2, that is, when the cooling capacity of the natural cold source is insufficient and the cooling demand of the air conditioning system 1000 is low and within the set time period, the operation mode 6 can meet the time requirements and make full use of the mechanical cold source to cool the load, while using the surplus cooling capacity of the mechanical cold source to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cooling capacity of the mechanical cold source as a backup, further making full use of the mechanical cold source and reducing the energy consumption of the air conditioning system 1000.

[0279] Optionally, the third power is equal to the second power.

[0280] It should be noted that the cooling demand of the air conditioning system 1000 is directly proportional to the size of T0.

[0281] The current time t∈[0h,24h] means that the range of the current time t is 0≤t≤24, which is also the 24 hours (h) of a day.

[0282] The first set time t1 and the second set time t2 can be set according to factors such as peak and off-peak electricity prices and environmental conditions. In one embodiment, the first set time t1 = 5:00 (i.e., 5:00 AM) and the second set time t2 = 22:00 (i.e., 10:00 PM).

[0283] The third preset duration can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the third preset duration is 5 minutes.

[0284] In some implementations, please refer to Figure 2 and Figure 1 After the compressor 104 supplies cooling to the second heat exchanger 201 and the second switching component 204 is controlled to allow the cold storage device 203 to store the cooling capacity of the first heat exchanger 101, if T0≤Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to continue supplying cooling to the second heat exchanger 201 with the compressor 104 and to control the second switching component 204 to allow the cold storage device 203 to store the cooling capacity of the first heat exchanger 101.

[0285] After the compressor 104 supplies cooling to the second heat exchanger 201 and the second switching component 204 is controlled to allow the cold storage device 203 to store the cooling capacity of the first heat exchanger 101, if T0 > Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to supply cooling to the second heat exchanger 201 by the compressor 104 + cold storage device 203 for a third preset duration, and the compressor 104 operates at a third power.

[0286] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively adjusts the cold storage source dynamically based on the further surplus or deficit of the mechanical cold source to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling requirements of the load while reducing the energy consumption of the air conditioning system 1000.

[0287] Specifically, when the air conditioning system 1000 is in mode 6: if T0≤Ta, the air conditioning system 1000 continues to operate in mode 6; if T0>Ta, the air conditioning system 1000 operates in mode 10 for the third preset duration.

[0288] It is understandable that when the air conditioning system 1000 is in mode 6: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when there is still surplus cooling capacity in the mechanical cold source, mode 6 continues to operate to make full use of the mechanical cold source to supply cooling for the load, while using the surplus cooling capacity of the mechanical cold source to supply cooling for the cold storage device 203 so that the cold storage device 203 can store the surplus cooling capacity of the mechanical cold source as a backup, thereby making full use of the mechanical cold source and reducing the energy consumption of the air conditioning system 1000.

[0289] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling capacity of the mechanical cold source is insufficient, the third preset duration of the operation mode 10 can make full use of the mechanical cold source and further utilize the cold storage cold source to provide cooling for the load. This is beneficial to meeting the cooling needs of the load and, to a certain extent, reducing the energy consumption of the air conditioning system 1000.

[0290] It should be noted that when the air conditioning system 1000 is in mode 6: when T0 > Ta, the air conditioning system 1000 switches from mode 6 to mode 10, that is, from mode 6 of cooling supply + cold storage mode to mode 10 of cooling supply mode. At this time, the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged, and the cold storage heat exchange system 200 is first configured to stop storing cold capacity, and then configured to supply cooling to the second heat exchanger 201.

[0291] Understandably, in Figure 2 In the case of the air conditioning system 1000 being in mode 6: when T0 > Ta, the air conditioning system 1000 first switches to mode 5, that is, the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged, the cold storage and heat exchange system 200 is first configured to stop storing cold capacity, and since T0 > Ta is still satisfied at this time, the air conditioning system 1000 switches from mode 5 to mode 10, that is, the cold storage and heat exchange system 200 is then configured to supply cooling to the second heat exchanger 201.

[0292] In some implementations, please refer to Figure 2 and Figure 1 After the compressor 104 and the cold storage device 203 supply cooling to the second heat exchanger 201 for a third preset time, if T0≤Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to continue to supply cooling to the second heat exchanger 201 for a third preset time.

[0293] After the compressor 104 and the cold storage device 203 supply cooling to the second heat exchanger 201 for a third preset time, if T0 > Ta, the air conditioning system 1000 is configured to control the compressor 104 to operate at a fourth power until T0 ≤ Ta.

[0294] The third power is less than the fourth power.

[0295] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively and dynamically adjusts the mechanical cold source according to the cooling capacity to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0296] Specifically, after the third preset duration of the air conditioning system 1000 operating mode 10: if T0≤Ta, the air conditioning system 1000 continues to operate mode 10 for the third preset duration; if T0>Ta, the air conditioning system 1000 is configured to control the compressor 104 to operate at a greater fourth power until T0≤Ta.

[0297] Understandably, compressor 104 operating at a higher fourth power can increase the cooling capacity of the mechanical cold source.

[0298] It is understandable that after the third preset duration of the air conditioning system 1000 operating mode 10: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when the mechanical cold source and the cold storage cold source can meet the cooling demand of the air conditioning system 1000, the third preset duration of the operating mode 10 continues to utilize the mechanical cold source and the cold storage cold source to jointly supply cooling for the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0299] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the mechanical cold source and the cold storage cold source cannot meet the cooling demand of the air conditioning system 1000, the compressor 104 is controlled to run at a greater fourth power until T0≤Ta, which can further increase the mechanical cold source to supply cooling to the load, and to a certain extent ensure that the cooling demand of the load is met.

[0300] In some implementations, please refer to Figure 2 and Figure 1 After the compressor 104 is controlled to operate at the fourth power until T0≤Ta, if T0>Tb, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to make the compressor 104 supply cooling to the second heat exchanger 201, and the compressor 104 operates at the second power.

[0301] After the compressor 104 is controlled to operate at the fourth power until T0≤Ta, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, it enters the cooling supply + cold storage mode.

[0302] In the cooling + cold storage mode, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to make the compressor 104 supply cooling to the second heat exchanger 201, and to control the second switching component 204 to make the cold storage device 203 store the cold energy of the first heat exchanger 101.

[0303] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the second set temperature Tb. The mechanical cold source is dynamically adjusted according to the cooling demand and time of the air conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, the cooling demand of the load is met while reducing the energy consumption of the air conditioning system 1000.

[0304] Specifically, after the air conditioning system 1000 controls the compressor 104 to operate at a higher fourth power to increase the mechanical cold source: when T0 > Tb, the air conditioning system 1000 operates in mode 5; when T0 ≤ Tb and t ≤ t1, or T0 ≤ Tb and t ≥ t2, the air conditioning system 1000 operates in mode 6.

[0305] Understandably, after the air conditioning system 1000 controls the compressor 104 to operate at a higher fourth power to increase the mechanical cold source: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the second set temperature Tb, that is, when the cooling demand of the air conditioning system 1000 is moderate, the air conditioning system 1000 operates in mode 5, using the mechanical cold source to cool the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0306] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and t≤t1, or when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and t≥t2, that is, when the cooling demand of the air conditioning system 1000 is low and within the set time period, the operation mode 6 can meet the time requirements and make full use of the mechanical cold source to cool the load, while using the surplus cold energy to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cold energy as a backup, thereby reducing the energy consumption of the air conditioning system 1000.

[0307] Please see Figure 2 This invention provides a control method for an air conditioning system 1000. The air conditioning system 1000 includes an air conditioning refrigeration system 100 and a cold storage heat exchange system 200. The air conditioning refrigeration system 100 and the cold storage heat exchange system 200 are connected through a first heat exchanger 101. The cold storage heat exchange system 200 includes a cold storage device 203 and a second heat exchanger 201 for exchanging heat with the load. The air conditioning refrigeration system 100 includes a natural cold source and a mechanical cold source, and the cold storage heat exchange system 200 includes a cold storage cold source.

[0308] Control methods include:

[0309] Based on the current signal, the temperature of the coolant at the inlet of the second heat exchanger 201, and the ambient temperature, the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 are controlled to supply cooling to the second heat exchanger 201 by at least one of the natural cold source, mechanical cold source, and cold storage cold source, and the air conditioning refrigeration system 100 is controlled to supply cooling to the cold storage device 203 by at least one of the natural cold source and mechanical cold source, and the cold storage heat exchange system 200 is controlled to supply cooling to the second heat exchanger 201 by the cold storage cold source.

[0310] In the above control method, the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 can use at least one of the natural cold source, mechanical cold source and cold storage cold source to supply cooling for the second heat exchanger 201, and use at least one of the natural cold source and mechanical cold source to supply cooling for the cold storage device 203, thereby realizing flexible switching and efficient operation of multiple operating modes, which is beneficial to energy distribution and reducing the energy consumption of the air conditioning system 1000.

[0311] Specifically, the air conditioning system 1000 is a device used to regulate temperature. A load is a facility used for centralized storage, management, and processing of large amounts of data, which generates a significant amount of heat during operation. This heat may affect the normal operation of the load and even impact environmental and personnel safety. To effectively reduce the energy consumption of the air conditioning system 1000, this invention provides a control method that can ensure the normal operation of the load to a certain extent while simultaneously reducing the energy consumption of the air conditioning system 1000, thereby lowering the load's power usage effectiveness (PUE) and alleviating its long-term operating costs.

[0312] The first heat exchanger 101 and the second heat exchanger 201 are devices used to transfer heat (i.e., transfer cold energy) between different media. The first heat exchanger 101 enables heat exchange between the air conditioning refrigeration system 100 and the cold storage heat exchange system 200. The second heat exchanger 201 enables heat exchange between the cold storage heat exchange system 200 and the load.

[0313] The air conditioning system 1000 includes an air conditioning refrigeration system 100 and a cold storage heat exchange system 200. The air conditioning refrigeration system 100 and the cold storage heat exchange system 200 are connected by a first heat exchanger 101 to achieve the transfer of cooling capacity. The air conditioning refrigeration system 100 can transfer the cooling capacity from natural cold sources and mechanical cold sources to the cold storage heat exchange system 200. The cold storage heat exchange system 200 can store the cooling capacity transferred by the air conditioning refrigeration system 100 and further transfer it to the load. Here, natural cold sources refer to the cooling capacity from the natural environment, that is, using low-temperature resources in nature for cooling. Mechanical cold sources refer to the cooling capacity provided by mechanical equipment (such as compressor 104), which requires energy to operate.

[0314] It should be noted that the control method of the present invention can be used for various loads that require temperature control, among which data centers are a common application scenario in this field, but this should not be regarded as a specific limitation of the present invention.

[0315] In some implementations, please refer to Figures 2 to 12 and Figure 2 The control methods include:

[0316] Step S01: When the current signal is normal, based on the temperature of the coolant at the inlet of the second heat exchanger 201 and the ambient temperature, control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 to supply cooling to the second heat exchanger 201 by at least one of the natural cold source, mechanical cold source and cold storage cold source, and control the air conditioning refrigeration system 100 to supply cooling to the cold storage device 203 by at least one of the natural cold source and mechanical cold source.

[0317] Step S02: When the current signal is interrupted, control the cold storage heat exchange system 200 to supply cold storage cold source to the second heat exchanger 201.

[0318] In the above embodiments, when the current signal is interrupted, the cold storage and heat exchange system 200 is controlled to supply cold storage cold source to the second heat exchanger 201, which is beneficial to meet the uninterrupted cooling requirements of the load.

[0319] Specifically, when the current signal is interrupted, that is, when the air conditioning system 1000 loses power, the cold storage source can function as an emergency cold source. At this time, the air conditioning system 100 stops operating, and the air conditioning system 1000 is controlled to operate in mode 7. During the operation of air conditioning system 1000 in mode 7, the water pump 202 can be powered by an emergency power supply, such as a UPS (Uninterruptible Power Supply). It is understood that the capacity of the emergency power supply is usually small and cannot support the normal operation of the entire air conditioning system 1000 for an extended period of time.

[0320] When the current signal is normal, that is, when the air conditioning system 1000 is powered on, different cold sources or combinations of cold sources can be used to make the air conditioning system 1000 operate in different modes according to needs.

[0321] It should be noted that, in Figure 3 In the diagram, when the current signal e = 1, it indicates that the current signal is interrupted, meaning that the air conditioning system 1000 is in a power-off state; when the current signal e = 0, it indicates that the current signal is normal, meaning that the air conditioning system 1000 is in a power-on state.

[0322] In some implementations, please refer to Figure 2 Step S01 includes:

[0323] Step S1: When T0-T1>T', control the air conditioning refrigeration system 100 to supply cooling to the second heat exchanger 201 from the natural cold source;

[0324] Step S2, when T” < T0-T1≤T’, control the air conditioning refrigeration system 100 to supply cooling to the second heat exchanger 201 by the natural cold source and the mechanical cold source, and the mechanical cold source operates at the first power.

[0325] Step S3: When T0-T1≤T”, control the air conditioning refrigeration system 100 to supply cooling to the second heat exchanger 201 from the mechanical cold source, and the mechanical cold source operates at the second power.

[0326] Where T0 is the temperature of the coolant at the inlet of the second heat exchanger 201, T1 is the ambient temperature, T' is the first set value, T” is the second set value, T'>T” is the first power less than the second power.

[0327] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the ambient temperature T1. This effectively adjusts the mechanical cold source dynamically according to the surplus or deficit of the natural cold source to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling requirements of the load while reducing the energy consumption of the air conditioning system 1000.

[0328] Specifically, when the air conditioning system 1000 is powered on: when T0-T1>T', the air conditioning system 1000 is controlled to operate in mode 1; when T”<T0-T1≤T', the air conditioning system 1000 is controlled to operate in mode 3; when T0-T1≤T”, the air conditioning system 1000 is controlled to operate in mode 5.

[0329] It is understandable that when the air conditioning system 1000 is powered on, when the temperature difference between the coolant at the inlet of the second heat exchanger 201, T0, and the ambient temperature, T1 is large, that is, when the cooling capacity of the natural cold source is sufficient, the operation mode 1 can make full use of the natural cold source to provide cooling for the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0330] When the temperature difference between the coolant at the inlet of the second heat exchanger 201, T0, and the ambient temperature, T1, is moderate, that is, when the cooling capacity of the natural cold source is moderate, operating mode 3 can introduce an appropriate amount of mechanical cold source on the basis of the natural cold source to jointly supply cooling for the load, thereby ensuring that the cooling requirements of the load are met to a certain extent.

[0331] When the temperature difference between the coolant at the inlet of the second heat exchanger 201, T0, and the ambient temperature, T1 is small, that is, when the cooling capacity of the natural cold source is insufficient, operating mode 5 can allow the mechanical cold source to completely replace the natural cold source to supply cooling for the load, which to a certain extent ensures that a good cooling effect is maintained at a higher ambient temperature.

[0332] It should be noted that the amount of cooling capacity of the natural cold source is directly proportional to T0-T1.

[0333] The first setpoint T' can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, in... Figures 2 to 13 In this case, the first set value T' = 10℃.

[0334] The second setpoint T can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, in... Figure 2 In the middle, the second set value T” = 5℃.

[0335] In some implementations, please refer to Figure 2 The control methods include:

[0336] After step S1:

[0337] Step S11: If Tb < T0 ≤ Ta, control the air conditioning refrigeration system 100 to continue to supply cooling to the second heat exchanger 201 from the natural cold source;

[0338] Step S12: If T0 > Ta, control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 so that the natural cold source and the cold storage cold source provide cooling to the second heat exchanger 201 for a first preset time.

[0339] Step S13: If T0≤Tb, enter the cooling supply + cold storage mode;

[0340] In the cooling + cold storage mode, the air conditioning system 100 is controlled to supply cooling to the second heat exchanger 201 from the natural cold source, and the air conditioning system 1000 is controlled to supply cooling to the cold storage device 203 from the natural cold source.

[0341] Where Ta is the first set temperature, Tb is the second set temperature, and Ta > Tb.

[0342] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201, the first set temperature Ta, and the second set temperature Tb. This effectively adjusts the cold storage source dynamically according to the cooling demand of the air conditioning system 1000 to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0343] Specifically, when the air conditioning system 1000 is in mode 1: when Tb < T0 ≤ Ta, the air conditioning system 1000 is controlled to continue operating in mode 1; when T0 > Ta, the air conditioning system 1000 is controlled to operate in mode 8 for the first preset duration; when T0 ≤ Tb, the air conditioning system 1000 is controlled to operate in mode 2.

[0344] It is understandable that when the air conditioning system 1000 is in mode 1: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta and greater than the second set temperature Tb, that is, when the cooling demand of the air conditioning system 1000 is moderate, mode 1 continues to be operated to utilize the natural cold source as the load for cooling, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0345] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling demand of the air conditioning system 1000 is high, the first preset duration of the operation mode 8 can make full use of the natural cold source and further utilize the cold storage cold source to cool the load. This is beneficial to meeting the cooling demand of the load and reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0346] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb, that is, when the cooling demand of the air conditioning system 1000 is low, the operation mode 2 can make full use of the natural cold source to cool the load, while using the surplus cold energy of the natural cold source to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cold energy of the natural cold source as a backup, further making full use of the natural cold source and reducing the energy consumption of the air conditioning system 1000.

[0347] It should be noted that the cooling demand of the air conditioning system 1000 is directly proportional to the size of T0.

[0348] The first set temperature Ta can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the first set temperature Ta ∈ (15℃, 21℃).

[0349] The second set temperature Tb can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the first set temperature Tb = Ta - 2℃.

[0350] The first preset duration can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the first preset duration is 5 minutes.

[0351] In some implementations, please refer to Figure 4 The control methods include:

[0352] After step S13:

[0353] Step S131: If T0≤Ta, control the air conditioning refrigeration system 100 to continue to supply cooling to the second heat exchanger 201 from the natural cold source, and control the air conditioning system 1000 to continue to supply cooling to the cold storage device 203 from the natural cold source.

[0354] Step S132: If T0 > Ta, control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 so that the natural cold source and the cold storage cold source provide cooling to the second heat exchanger 201 for a first preset time.

[0355] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively adjusts the cold storage source dynamically according to the surplus or deficit of the natural cold source to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0356] Specifically, when the air conditioning system 1000 is in mode 2: if T0≤Ta, the air conditioning system 1000 is controlled to continue operating in mode 2; if T0>Ta, the air conditioning system 1000 is controlled to operate in mode 8 for the first preset duration.

[0357] It is understandable that when the air conditioning system 1000 is in mode 2: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when there is still surplus cooling capacity from the natural cold source, mode 2 continues to operate to fully utilize the natural cold source to supply cooling for the load, while using the surplus cooling capacity from the natural cold source to supply cooling for the cold storage device 203 so that the cold storage device 203 can store the surplus cooling capacity from the natural cold source as a backup, thereby further making full use of the natural cold source and reducing the energy consumption of the air conditioning system 1000.

[0358] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling capacity of the natural cold source is insufficient, the first preset duration of the operation mode 8 can make full use of the natural cold source and further utilize the cold storage cold source to provide cooling for the load. This is beneficial to meeting the cooling needs of the load and, to a certain extent, reducing the energy consumption of the air conditioning system 1000.

[0359] It should be noted that when the air conditioning system 1000 is in mode 2: when T0 > Ta, the air conditioning system 1000 switches from mode 2 to mode 8, that is, from mode 2 of cooling supply + cold storage mode to mode 8 of cooling supply mode. At this time, the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged. First, the cold storage heat exchange system 200 is controlled to stop storing cold energy, and then the cold storage device 200 is controlled to supply cold to the second heat exchanger 201.

[0360] Understandably, in Figure 5 In the case of the air conditioning system 1000 being in mode 2: when T0 > Ta, the air conditioning system 1000 first switches to mode 1, that is, the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged, and the cold storage heat exchange system 200 is first controlled to stop storing cold capacity. Since T0 > Ta is still satisfied at this time, the air conditioning system 1000 switches from mode 1 to mode 8, that is, the cold storage heat exchange system 200 is then controlled to supply cooling to the second heat exchanger 201.

[0361] In some implementations, please refer to Figure 2 The control methods include:

[0362] After steps S12 and S132:

[0363] Step S121: If T0≤Ta, control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 to continue to supply cooling to the second heat exchanger 201 for a first preset time using the natural cold source and the cold storage cold source.

[0364] Step S122: If T0 > Ta, control the air conditioning refrigeration system 100 to supply cooling to the second heat exchanger 201 using both natural and mechanical cold sources, with the mechanical cold source operating at the first power.

[0365] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively and dynamically adjusts the mechanical cold source according to the cooling capacity to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0366] Specifically, after the first preset duration of the air conditioning system 1000 operating mode 8: if T0≤Ta, control the air conditioning system 1000 to continue operating mode 8 for the first preset duration; if T0>Ta, control the air conditioning system 1000 to operate mode 3.

[0367] Understandably, after the first preset time of the air conditioning system 1000 operating mode 8: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when the natural cold source and the cold storage cold source can meet the cooling demand of the air conditioning system 1000, the operating mode 8 continues to utilize the natural cold source and the cold storage cold source to jointly supply cooling for the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0368] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the natural cold source and the cold storage cold source cannot meet the cooling demand of the air conditioning system 1000, the operation mode 3 introduces an appropriate amount of mechanical cold source on the basis of the natural cold source to jointly supply cooling for the load, thereby ensuring that the cooling demand of the load is met to a certain extent.

[0369] In some implementations, please refer to Figure 6 The control methods include:

[0370] After steps S2 and S122 (not shown):

[0371] Step S21: If Tb < T0 ≤ Ta, control the air conditioning refrigeration system 100 to continue to supply cooling to the second heat exchanger 201 with natural cold source and mechanical cold source, and the mechanical cold source operates at the first power.

[0372] Step S22: If T0 > Ta, control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 to supply cooling to the second heat exchanger 201 for a second preset duration using the natural cold source, mechanical cold source and cold storage cold source.

[0373] Step S23: If T0≤Tb and t≤t1, or T0≤Tb and t≥t2, enter the cooling supply + cold storage mode;

[0374] In the cooling + cold storage mode, the air conditioning refrigeration system 100 is controlled to supply cooling to the second heat exchanger 201 by natural cold source and mechanical cold source, and the air conditioning system 1000 is controlled to supply cooling to the cold storage device 203 by natural cold source and mechanical cold source.

[0375] Where t is the current time, t1 is the first set time, t2 is the second set time, t∈[0h, 24h], and t1<t2.

[0376] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201, the first set temperature Ta, and the second set temperature Tb. This effectively adjusts the cold storage source dynamically according to the cooling demand and time of the air conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0377] Specifically, when the air conditioning system 1000 is in mode 3: if Tb < T0 ≤ Ta, the air conditioning system 1000 is controlled to continue operating in mode 3; if T0 > Ta, the air conditioning system 1000 is controlled to operate in mode 9 for the second preset duration; if T0 ≤ Tb and t ≤ t1, or T0 ≤ Tb and t ≥ t2, the air conditioning system 1000 is controlled to operate in mode 4.

[0378] It is understandable that when the air conditioning system 1000 is in mode 3: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta and greater than the second set temperature Tb, that is, when the cooling demand of the air conditioning system 1000 is moderate, mode 3 continues to be operated to utilize natural cold sources and mechanical energy to provide cooling for the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0379] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling demand of the air conditioning system 1000 is high, the second preset duration of the operation mode 9 can make full use of natural cold source and mechanical cold source, and further utilize the cold storage cold source to provide cooling for the load. This is beneficial to meeting the cooling demand of the load and reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0380] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and t≤t1, or when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and t≥t, that is, when the cooling demand of the air conditioning system 1000 is low and within the set time period, the operation mode 4 can meet the time requirements and make full use of the natural cold source and mechanical cold source to cool the load, while using the surplus cooling capacity of the natural cold source and mechanical cold source to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cooling capacity of the natural cold source and mechanical cold source as a backup, further making full use of the natural cold source and mechanical cold source and reducing the energy consumption of the air conditioning system 1000.

[0381] It should be noted that the cooling demand of the air conditioning system 1000 is directly proportional to the size of T0.

[0382] The current time t∈[0h,24h] means that the range of the current time t is 0≤t≤24, which is also the 24 hours (h) of a day.

[0383] The first set time t1 and the second set time t2 can be set according to factors such as peak and off-peak electricity prices and environmental conditions. In one embodiment, the first set time t1 = 5:00 (i.e., 5:00 AM) and the second set time t2 = 22:00 (i.e., 10:00 PM).

[0384] The second preset duration can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the second preset duration is 5 minutes.

[0385] In some implementations, please refer to Figure 7 The control methods include:

[0386] After step S23:

[0387] Step S231: If T0≤Ta, control the air conditioning refrigeration system 100 to continue to supply cooling to the second heat exchanger 201 using natural cold source and mechanical cold source, and control the air conditioning system 1000 to continue to supply cooling to the cold storage device 203 using natural cold source and mechanical cold source.

[0388] Step S232: If T0 > Ta, control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 to supply cooling to the second heat exchanger 201 for a second preset duration using the natural cold source, mechanical cold source and cold storage cold source.

[0389] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively adjusts the cold storage source dynamically based on the surplus or deficit of the natural and mechanical cold sources to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling requirements of the load while reducing the energy consumption of the air conditioning system 1000.

[0390] Specifically, when the air conditioning system 1000 is in mode 4: if T0≤Ta, the air conditioning system 1000 is controlled to continue operating in mode 4; if T0>Ta, the air conditioning system 1000 is controlled to operate in mode 9 for the second preset duration.

[0391] It is understandable that when the air conditioning system 1000 is in mode 4: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when there is still surplus cooling capacity in the natural cold source and the mechanical cold source, mode 4 continues to operate to make full use of the natural cold source and the mechanical cold source to supply cooling for the load, while using the surplus cooling capacity of the natural cold source and the mechanical cold source to supply cooling for the cold storage device 203 so that the cold storage device 203 can store the surplus cooling capacity of the natural cold source and the mechanical cold source as a backup, thereby making full use of the natural cold source and the mechanical cold source and reducing the energy consumption of the air conditioning system 1000.

[0392] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling capacity of the natural cold source and the mechanical cold source is insufficient, the second preset duration of the operation mode 9 can make full use of the natural cold source and the mechanical cold source, and further utilize the cold storage cold source to provide cooling for the load. This is beneficial to meeting the cooling needs of the load and, to a certain extent, reducing the energy consumption of the air conditioning system 1000.

[0393] It should be noted that when the air conditioning system 1000 is in mode 4: when T0 > Ta, the air conditioning system 1000 switches from mode 4 to mode 9, that is, from mode 4 of cooling supply + cold storage mode to mode 9 of cooling supply mode. At this time, the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged. First, the cold storage heat exchange system 200 is controlled to stop storing cold energy, and then the cold storage device 200 is controlled to supply cold to the second heat exchanger 201.

[0394] Understandably, in Figure 8 In the case of the air conditioning system 1000 being in mode 4: when T0 > Ta, the air conditioning system 1000 first switches to mode 3, that is, the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged, and the cold storage heat exchange system 200 is first controlled to stop storing cold capacity. Since T0 > Ta is still satisfied at this time, the air conditioning system 1000 switches from mode 3 to mode 9, that is, the cold storage heat exchange system 200 is then controlled to supply cooling to the second heat exchanger 201.

[0395] In some implementations, please refer to Figure 2 The control methods include:

[0396] After steps S22 and S232:

[0397] Step S221: If T0≤Ta, control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 to continue to supply cooling to the second heat exchanger 201 for a second preset time using the natural cold source, mechanical cold source and cold storage cold source.

[0398] Step S222: If T0 > Ta, control the air conditioning refrigeration system 100 to supply cooling to the second heat exchanger 201 via the mechanical cold source, and the mechanical cold source operates at the second power.

[0399] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively and dynamically adjusts the mechanical cold source according to the cooling capacity to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0400] Specifically, after the second preset duration of the air conditioning system 1000 operating mode 9: if T0≤Ta, control the air conditioning system 1000 to continue operating mode 9 for the second preset duration; if T0>Ta, control the air conditioning system 1000 to operate mode 5.

[0401] Understandably, after the second preset duration of the air conditioning system 1000 operating mode 9: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when the appropriate amount of mechanical cold source and cold storage cold source can meet the cooling demand of the air conditioning system 1000, the second preset duration of the operating mode 9 continues to utilize the mechanical cold source and cold storage cold source to jointly supply cooling for the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0402] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the appropriate amount of mechanical cold source and cold storage cold source cannot meet the cooling demand of the air conditioning system 1000, the operation mode 5 intervenes with more mechanical cold source so that the mechanical cold source completely replaces the natural cold source to supply cooling for the load, thereby ensuring that the cooling demand of the load is met to a certain extent.

[0403] In some implementations, please refer to Figure 9 The control methods include:

[0404] After steps S3 and S222 (not shown):

[0405] Step S31: If Tb<T0≤Ta, control the air conditioning refrigeration system 100 to continue to supply cooling to the second heat exchanger 201 with the mechanical cold source, and the mechanical cold source operates at the second power.

[0406] Step S32: If T0 > Ta, control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 so that the cold storage cold source and the mechanical cold source provide cooling to the second heat exchanger 201 for a third preset time, and the mechanical cold source operates at the third power.

[0407] Step S33: If T0≤Tb and t≤t1, or T0≤Tb and t≥t2, enter the cooling supply + cold storage mode;

[0408] In the cooling + cold storage mode, the air conditioning refrigeration system 100 is controlled to supply cooling to the second heat exchanger 201 via the mechanical cold source, and the air conditioning control system 1000 is controlled to supply cooling to the cold storage device 203 via the mechanical cold source.

[0409] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201, the first set temperature Ta, and the second set temperature Tb. This effectively adjusts the cold storage source dynamically according to the cooling demand and time of the air conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0410] Specifically, when the air conditioning system 1000 is in mode 5: if Tb < T0 ≤ Ta, the air conditioning system 1000 is controlled to continue operating in mode 5; if T0 > Ta, the air conditioning system 1000 is controlled to operate in mode 10 for the third preset duration; if T0 ≤ Tb and t ≤ t1, or T0 ≤ Tb and t ≥ t2, the air conditioning system 1000 is controlled to operate in mode 6.

[0411] It is understandable that when the air conditioning system 1000 is in mode 5: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta and greater than the second set temperature Tb, that is, when the cooling capacity of the natural cold source is insufficient and the cooling demand of the air conditioning system 1000 is moderate, mode 5 continues to be operated to utilize the mechanical cold source as the load for cooling, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0412] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling demand of the air conditioning system 1000 is high, the third preset duration of the operation mode 10 can make full use of the mechanical cold source and further utilize the cold storage cold source to cool the load. This is beneficial to meeting the cooling demand of the load and reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0413] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and t≤t1, or when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and t≥t2, that is, when the cooling capacity of the natural cold source is insufficient and the cooling demand of the air conditioning system 1000 is low and within the set time period, the operation mode 6 can meet the time requirements and make full use of the mechanical cold source to cool the load, while using the surplus cooling capacity of the mechanical cold source to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cooling capacity of the mechanical cold source as a backup, further making full use of the mechanical cold source and reducing the energy consumption of the air conditioning system 1000.

[0414] Optionally, the third power is equal to the second power.

[0415] It should be noted that the cooling demand of the air conditioning system 1000 is directly proportional to the size of T0.

[0416] The current time t∈[0h,24h] means that the range of the current time t is 0≤t≤24, which is also the 24 hours (h) of a day.

[0417] The first set time t1 and the second set time t2 can be set according to factors such as peak and off-peak electricity prices and environmental conditions. In one embodiment, the first set time t1 = 5:00 (i.e., 5:00 AM) and the second set time t2 = 22:00 (i.e., 10:00 PM).

[0418] The third preset duration can be set according to factors such as environment, cooling requirements, and the performance of the air conditioning system 1000. For example, the third preset duration is 5 minutes.

[0419] In some implementations, please refer to Figure 10 The control methods include:

[0420] After step S33:

[0421] Step S331: If T0≤Ta, control the air conditioning refrigeration system 100 to continue to supply cooling to the second heat exchanger 201 with the mechanical cold source, and control the air conditioning system 1000 to continue to supply cooling to the cold storage device 203 with the mechanical cold source.

[0422] Step S332: If T0 > Ta, control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 so that the cold storage cold source and the mechanical cold source provide cooling to the second heat exchanger 201 for a third preset time, and the mechanical cold source operates at the third power.

[0423] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively adjusts the cold storage source dynamically based on the further surplus or deficit of the mechanical cold source to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling requirements of the load while reducing the energy consumption of the air conditioning system 1000.

[0424] Specifically, when the air conditioning system 1000 is in mode 6: if T0≤Ta, the air conditioning system 1000 is controlled to continue operating in mode 6; if T0>Ta, the air conditioning system 1000 is controlled to operate in mode 10 for the third preset duration.

[0425] It is understandable that when the air conditioning system 1000 is in mode 6: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when there is still surplus cooling capacity in the mechanical cold source, mode 6 continues to operate to make full use of the mechanical cold source to supply cooling for the load, while using the surplus cooling capacity of the mechanical cold source to supply cooling for the cold storage device 203 so that the cold storage device 203 can store the surplus cooling capacity of the mechanical cold source as a backup, thereby making full use of the mechanical cold source and reducing the energy consumption of the air conditioning system 1000.

[0426] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling capacity of the mechanical cold source is insufficient, the third preset duration of the operation mode 10 can make full use of the mechanical cold source and further utilize the cold storage cold source to provide cooling for the load. This is beneficial to meeting the cooling needs of the load and, to a certain extent, reducing the energy consumption of the air conditioning system 1000.

[0427] It should be noted that when the air conditioning system 1000 is in mode 6: when T0 > Ta, the air conditioning system 1000 switches from mode 6 to mode 10, that is, from mode 6 of cooling supply + cold storage mode to mode 10 of cooling supply mode. At this time, the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged. First, the cold storage heat exchange system 200 is controlled to stop storing cold energy, and then the cold storage device 200 is controlled to supply cold to the second heat exchanger 201.

[0428] Understandably, in Figure 11 When the air conditioning system 1000 is in mode 6: under the condition that T0>Ta, the air conditioning system 1000 first switches to mode 5, that is, the refrigerant pump 103 of the air conditioning refrigeration system 100 remains unchanged, and the cold storage heat exchange system 200 is first controlled to stop storing cold capacity. Since T0>Ta is still satisfied at this time, the air conditioning system 1000 switches from mode 5 to mode 10, that is, the cold storage heat exchange system 200 is then controlled to supply cooling to the second heat exchanger 201.

[0429] In some implementations, please refer to Figure 2 The control methods include:

[0430] After steps S32 and S332:

[0431] Step S321: If T0≤Ta, control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 to continue to supply the cold storage cold source and the mechanical cold source to the second heat exchanger 201 for a third preset time, and the mechanical cold source to operate at the third power.

[0432] Step S322: If T0 > Ta, control the air conditioning refrigeration system 100 to supply cooling to the second heat exchanger 201 by the mechanical cold source until T0 ≤ Ta, and the mechanical cold source operates at the fourth power.

[0433] The third power is less than the fourth power.

[0434] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the first set temperature Ta. This effectively and dynamically adjusts the mechanical cold source according to the cooling capacity to ensure the cooling effect, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, this meets the cooling demand of the load while reducing the energy consumption of the air conditioning system 1000.

[0435] Specifically, after the third preset duration of the air conditioning system 1000 operating mode 10: if T0≤Ta, the air conditioning system 1000 continues to operate mode 10 for the third preset duration; if T0>Ta, the air conditioning system 1000 is configured to control the compressor 104 to operate at a greater fourth power until T0≤Ta.

[0436] Understandably, compressor 104 operating at a higher fourth power can increase the cooling capacity of the mechanical cold source.

[0437] It is understandable that after the third preset duration of the air conditioning system 1000 operating mode 10: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when the mechanical cold source and the cold storage cold source can meet the cooling demand of the air conditioning system 1000, the third preset duration of the operating mode 10 continues to utilize the mechanical cold source and the cold storage cold source to jointly supply cooling for the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0438] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the mechanical cold source and the cold storage cold source cannot meet the cooling demand of the air conditioning system 1000, the compressor 104 is controlled to run at a greater fourth power until T0≤Ta, which can further increase the mechanical cold source to supply cooling to the load, and to a certain extent ensure that the cooling demand of the load is met.

[0439] In some implementations, please refer to Figure 12 The control methods include:

[0440] After step S322:

[0441] Step S3221: If T0 > Tb, control the air conditioning refrigeration system 100 to supply cooling to the second heat exchanger 201 from the mechanical cold source, and the mechanical cold source operates at the second power.

[0442] Step S3222: If T0≤Tb and t≤t1, or T0≤Tb and t≥t2, enter the cooling supply + cold storage mode;

[0443] In the cooling + cold storage mode, the air conditioning refrigeration system 100 is controlled to supply cooling to the second heat exchanger 201 via the mechanical cold source, and the air conditioning system 1000 is controlled to supply cooling to the cold storage device 203 via the mechanical cold source.

[0444] In the above embodiments, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the second set temperature Tb. The mechanical cold source is dynamically adjusted according to the cooling demand and time of the air conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use of the cold source and energy efficiency regulation. To a certain extent, the cooling demand of the load is met while reducing the energy consumption of the air conditioning system 1000.

[0445] Specifically, after the air conditioning system 1000 controls the compressor 104 to operate at a higher fourth power to increase the mechanical cold source: when T0 > Tb, the air conditioning system 1000 controls the operation mode 5; when T0 ≤ Tb and t ≤ t1, or T0 ≤ Tb and t ≥ t2, the air conditioning system 1000 controls the operation mode 6.

[0446] Understandably, after the air conditioning system 1000 controls the compressor 104 to operate at a higher fourth power to increase the mechanical cold source: when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is greater than the second set temperature Tb, that is, when the cooling demand of the air conditioning system 1000 is moderate, the air conditioning system 1000 operates in mode 5, using the mechanical cold source to provide cooling for the load, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0447] When the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and t≤t1, or when the temperature T0 of the coolant at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and t≥t2, that is, when the cooling demand of the air conditioning system 1000 is low and within the set time period, the operation mode 6 can meet the time requirements and make full use of the mechanical cold source to cool the load, while using the surplus cold energy to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cold energy as a backup, thereby reducing the energy consumption of the air conditioning system 1000.

[0448] In some implementations, please refer to Figure 13 The air conditioning refrigeration system 100 includes a refrigerant circuit, a refrigerant pump 103, a compressor 104, and a first switching component 106. The first switching component 106 is connected to the refrigerant circuit, the refrigerant pump 103, and the compressor 104. The first switching component 106 is configured to control the refrigerant pump 103 and the compressor 104 to enter and exit the refrigerant circuit.

[0449] The cold storage and heat exchange system 200 includes a coolant circuit, a cold storage device 203, and a second switching component 204. The coolant circuit and the refrigerant circuit are connected through a first heat exchanger 101. The coolant circuit includes a second heat exchanger 201, which is used for heat exchange with the load. The second switching component 204 is connected to the cold storage device 203, the first heat exchanger 101, and the second heat exchanger 201. The second switching component 204 is configured to control the cold storage device 203 to enter and exit the coolant circuit.

[0450] In the above embodiments, on the one hand, the air conditioning refrigeration system 100 can utilize the cooperation of the refrigerant pump 103, the compressor 104 and the first switching component 106 to provide cooling capacity to the first heat exchanger 101 using natural cold source and / or the mechanical cold source of the compressor 104. On the other hand, the cold storage and heat exchange system 200 can utilize the cooperation of the cold storage device 203 and the second switching component 204 to enable the cold storage device 203 to store the cooling capacity of the first heat exchanger 101 and to supply cooling to the second heat exchanger 201, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0451] Specifically, the air conditioning refrigeration system 100 includes a refrigerant pump 103, a compressor 104, a refrigerant circuit, and a first switching assembly 106. The refrigerant circuit may include a third heat exchanger 102, a throttling device 105, and a first heat exchanger 101.

[0452] A refrigerant pump 103 is a device used to circulate and deliver refrigerant (such as Freon) in a refrigerant circuit. During the refrigerant circulation process in the refrigerant circuit, cooling capacity can be transferred and exchanged, helping to lower the temperature of the load.

[0453] Throttling device 105 (such as an expansion valve or throttle valve) can reduce the pressure and temperature of the refrigerant by limiting the flow rate of the refrigerant circulating in the refrigerant circuit. Compressor 104 can increase the pressure and temperature of the refrigerant by compressing it. Throttling device 105 and compressor 104 can transfer and exchange more cooling capacity during the refrigerant circulation in the refrigerant circuit.

[0454] The third heat exchanger 102 is a device used to transfer heat (i.e., transfer cold energy) between different media. The third heat exchanger 102 enables heat exchange between a natural cold source and the refrigerant circulating in the refrigerant circuit. The natural cold source can be low-temperature air, low-temperature water, or other low-temperature substances found in nature.

[0455] The first switching component 106 can be used to control the refrigerant pump 103 and compressor 104 to enter and exit the refrigerant circuit. That is, when the air conditioning system 1000 is in different working modes, the first switching component 106 can adjust whether the refrigerant pump 103 and compressor 104 participate in the refrigeration process.

[0456] The cold storage and heat exchange system 200 includes a coolant circuit, a cold storage device 203, and a second switching assembly 204. The coolant circuit may include a second heat exchanger 201 and a water pump 202.

[0457] Pump 202 is a device used to circulate and deliver coolant (such as water) in a coolant circuit. During the circulation of coolant in the coolant circuit, cooling capacity can be transferred and exchanged, helping to lower the temperature of the load.

[0458] The cold storage device 203 is a device that can store cold energy. It can store cold energy when demand is low and provide additional cooling capacity when demand is high or when the air conditioning system 100 fails, thereby reducing energy consumption and improving the operating efficiency of the air conditioning system 1000 to a certain extent.

[0459] The second switching component 204 can be used to control the connection and disconnection of the cold storage device 203 from the coolant circuit. That is, when the air conditioning system 1000 is in different working modes, the second switching component 204 can adjust whether the cold storage device 203 participates in the cooling process.

[0460] It should be noted that the second switching component 204 can control the connection and disconnection of the cold storage device 203 from the coolant circuit, thereby increasing the independence and flexibility of the cold storage device 203 to a certain extent. This facilitates the modularization of the air conditioning system 1000, helps optimize energy distribution, and ultimately reduces the energy consumption and improves the operating efficiency of the air conditioning system 1000. Simultaneously, when the cold storage device 203 malfunctions or requires maintenance, the air conditioning system 1000 can maintain normal operation to a certain extent.

[0461] It should be noted that the refrigerant pump 103 is used to circulate and deliver refrigerant in the refrigerant circuit. The water pump 202 is used to circulate and deliver coolant in the coolant circuit. In this invention, water pump 202 and refrigerant pump 103 are common terms in this technical field and should not be regarded as limitations on refrigerant and coolant.

[0462] It should be noted that when the refrigerant flows in the refrigerant circuit, it can undergo a phase change, thereby absorbing and releasing heat. Refrigerants include, but are not limited to, alkanes, tetrafluoroethane, Freon, propane (R290), isobutane, etc., and this invention does not impose any limitations on them.

[0463] When coolant flows in the coolant circuit, its temperature changes (rises or falls), but a phase change does not occur substantially. Coolants include, but are not limited to, water, ethylene glycol, and mixtures thereof (such as ethylene glycol-water mixtures).

[0464] It should be noted that the cold storage device 203 may include, but is not limited to, phase change material cold storage, water cold storage, or ice cold storage. In one embodiment, the cold storage device 203 is filled with a phase change material, the phase change point temperature of which is lower than a first set temperature but higher than the ambient temperature.

[0465] In some implementations, please refer to Figure 1 The first switching component 106 includes a first valve 107 and a second valve 108;

[0466] One end of the first valve 107 is connected to the inlet of the refrigerant pump 103, and the other end is connected to the outlet of the refrigerant pump 103. The first switching component 106 is configured to remove the refrigerant pump 103 from the refrigerant circuit when the first valve 107 is open, and to connect the refrigerant pump 103 to the refrigerant circuit when the first valve 107 is closed.

[0467] One end of the second valve 108 is connected to the inlet of the compressor 104, and the other end is connected to the outlet of the compressor 104. The first switching component 106 is configured to remove the compressor 104 from the refrigerant circuit when the second valve 108 is open, and to connect the compressor 104 to the refrigerant circuit when the second valve 108 is closed.

[0468] In the above embodiments, the first valve 107 can control the refrigerant pump 103 to enter and exit the refrigerant circuit, and the second valve 108 can control the compressor 104 to enter and exit the refrigerant circuit. Thus, the natural cold source and / or the mechanical cold source of the compressor 104 can be used to provide cooling capacity to the first heat exchanger 101, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0469] Specifically, the first valve 107 and the second valve 108 are components that control the flow of refrigerant by opening and closing channels.

[0470] With the first valve 107 open, the refrigerant pump 103 stops operating. Refrigerant flows from the inlet of the refrigerant pump 103 through the first valve 107 but without passing through the pump itself, to the outlet of the pump. In other words, the refrigerant pump 103 is removed from the refrigerant circuit. With the first valve 107 closed, the refrigerant pump 103 operates. Refrigerant flows from the inlet of the refrigerant pump 103 through the pump itself but without passing through the first valve 107, to the outlet of the pump. In other words, the refrigerant pump 103 is connected to the refrigerant circuit.

[0471] With the second valve 108 open, the compressor 104 stops operating. Refrigerant flows from the inlet of compressor 104 through the second valve 108 but without passing through the compressor itself to the outlet of compressor 104; in other words, compressor 104 is removed from the refrigerant circuit. With the second valve 108 closed, the compressor 104 operates. Refrigerant flows from the inlet of compressor 104 through the compressor itself but without passing through the second valve 108 to the outlet of compressor 104; in other words, compressor 104 is connected to the refrigerant circuit.

[0472] Optionally, the first valve 107 and the second valve 108 can be one-way valves used to restrict the flow direction of the refrigerant.

[0473] In some implementations, please refer to Figure 1 The second switching component 204 includes a first valve component 205 and a second valve component 206;

[0474] The first valve assembly 205 is connected to the outlet of the first heat exchanger 101, the inlet of the cold storage device 203, and the inlet of the second heat exchanger 201. The first valve assembly 205 is configured to control whether the coolant flowing out of the first heat exchanger 101 flows into the cold storage device 203.

[0475] The second valve assembly 206 is connected to the outlet of the cold storage device 203, the inlet and outlet of the second heat exchanger 201 and the inlet of the first heat exchanger 101. The second valve assembly 206 is configured to control whether the coolant flowing out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201.

[0476] In the above embodiments, the first valve assembly 205 can control the connection and disconnection of the cold storage device 203 from the coolant circuit, and the second valve assembly 206 can control whether the cold storage device 203 stores the cold energy of the first heat exchanger 101. Thus, the cooperation between the cold storage device 203, the first valve assembly 205, and the second valve assembly 206 can enable the cold storage device 203 to store the cold energy of the first heat exchanger 101 and supply cooling to the second heat exchanger 201, thereby reducing the energy consumption of the air conditioning system 1000 to a certain extent.

[0477] Specifically, the first valve assembly 205 can control whether the coolant flowing out of the first heat exchanger 101 flows into the cold storage device 203. In one embodiment, the coolant flows from the outlet of the first heat exchanger 101 through the first valve assembly 205 to the inlet of the second heat exchanger 201, that is, the coolant flowing out of the first heat exchanger 101 does not flow into the cold storage device 203. In another embodiment, the coolant flows from the outlet of the first heat exchanger 101 through the first valve assembly 205 to the inlet of the cold storage device 203, that is, the coolant flowing out of the first heat exchanger 101 flows into the cold storage device 203.

[0478] The second valve assembly 206 can control whether the coolant flowing from the cold storage device 203 flows back to the first heat exchanger 101 via the second heat exchanger 201. In one embodiment, the coolant flows from the outlet of the cold storage device 203 through the second valve assembly 206 to the inlet of the second heat exchanger 201, and then flows back from the outlet of the second heat exchanger 201 to the inlet of the first heat exchanger 101; that is, the coolant flowing from the cold storage device 203 flows back to the first heat exchanger 101 via the second heat exchanger 201. In another embodiment, the coolant flows from the outlet of the cold storage device 203 through the second valve assembly 206 to the outlet of the second heat exchanger 201, and then flows back from the outlet of the second heat exchanger 201 to the inlet of the first heat exchanger 101; that is, the coolant flowing from the cold storage device 203 does not flow back to the first heat exchanger 101 via the second heat exchanger 201.

[0479] Understandably, if the coolant flowing out of the first heat exchanger 101 does not flow into the cold storage device 203, the first valve assembly 205 is configured to control the cold storage device 203 to move out of the coolant circuit. If the coolant flowing out of the first heat exchanger 101 flows into the cold storage device 203, the first valve assembly 205 is configured to control the cold storage device 203 to connect to the coolant circuit.

[0480] Understandably, when the coolant flowing from the cold storage device 203 returns to the first heat exchanger 101 via the second heat exchanger 201, the second valve assembly 206 is configured to control the cold storage device 203 to supply cooling to the second heat exchanger 201, meaning it does not store the cooling capacity of the first heat exchanger 101. When the coolant flowing from the cold storage device 203 does not return to the first heat exchanger 101 via the second heat exchanger 201, the second valve assembly 206 is configured to control the cold storage device 203 to store the cooling capacity of the first heat exchanger 101.

[0481] In summary, the first valve assembly 205 can control the connection and disconnection of the cold storage device 203 from the coolant circuit. When the cold storage device 203 is connected to the coolant circuit, the second valve assembly 206 can control the cold storage device 203 to store the cold energy of the first heat exchanger 101 and supply cold energy to the second heat exchanger 201.

[0482] Understandably, the first valve assembly 205 can control the connection and disconnection of the cold storage device 203 from the coolant circuit, thereby increasing the independence and flexibility of the cold storage device 203 to a certain extent. This facilitates the modularization of the air conditioning system 1000, helps optimize energy distribution, and ultimately reduces the energy consumption and improves the operating efficiency of the air conditioning system 1000. Simultaneously, when the cold storage device 203 malfunctions or requires maintenance, the air conditioning system 1000 can maintain normal operation to a certain extent.

[0483] Please refer to Figure 1 According to an embodiment of the present invention, a control device 2 for an air conditioning system 1000 includes a processor 22 and a memory 21. The memory 21 stores a computer program. When the computer program is executed by the processor 22, it implements the steps of the control method of any of the above embodiments.

[0484] Please refer to Figure 14 Figure 14 The present invention provides an air conditioning system 1000 including the control device described in the above embodiments.

[0485] Specifically, the control device 2 can be electrically connected to the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 to control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 to implement the control method of any of the above embodiments.

[0486] The control device 2 can control the operation of the refrigerant pump 103 and compressor 104, the switching of the first switching component 106 and the second switching component 204, and the opening degree of the throttling device 105, etc.

[0487] The present invention provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor 22, implements the steps of the control method of any of the above embodiments.

[0488] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0489] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more steps for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0490] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, combinations, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An air conditioning system, characterized by, The application relates to an air conditioning refrigeration system, a cold storage heat exchange system and a control method thereof. The air conditioning refrigeration system comprises a refrigerant circuit, a fluorine pump, a compressor and a first switching assembly connected with the refrigerant circuit, the fluorine pump and the compressor, and the first switching assembly is configured to control the fluorine pump and the compressor to access and move out of the refrigerant circuit. The cold storage heat exchange system comprises a cooling liquid circuit, a cold storage device and a second switching assembly, the cooling liquid circuit and the refrigerant circuit are connected through a first heat exchanger, the cooling liquid circuit comprises a second heat exchanger for heat exchange with a load, the second switching assembly is connected with the cold storage device, the first heat exchanger and the second heat exchanger, and the second switching assembly is configured to control the cold storage device to access and move out of the cooling liquid circuit. When the cold storage device accesses the cooling liquid circuit, the cold storage device is configured to store cold energy of the first heat exchanger and supply cold energy to the second heat exchanger. The second switching assembly comprises a first valve assembly and a second valve assembly, the first valve assembly is connected with an outlet of the first heat exchanger, an inlet of the cold storage device and an inlet of the second heat exchanger, and the first valve assembly is configured to control whether the cooling liquid flowing out of the first heat exchanger flows into the cold storage device. The second valve assembly is connected with an outlet of the cold storage device, an inlet and an outlet of the second heat exchanger and an inlet of the first heat exchanger, and the second valve assembly is configured to control whether the cooling liquid flowing out of the cold storage device flows back to the first heat exchanger through the second heat exchanger.

2. The air conditioning system of claim 1, wherein, The first switching assembly comprises a first valve and a second valve. One end of the first valve is connected with an inlet of the fluorine pump, and the other end is connected with an outlet of the fluorine pump, and the first switching assembly is configured to make the fluorine pump move out of the refrigerant circuit when the first valve is opened and make the fluorine pump access the refrigerant circuit when the first valve is closed. One end of the second valve is connected with an inlet of the compressor, and the other end is connected with an outlet of the compressor, and the first switching assembly is configured to make the compressor move out of the refrigerant circuit when the second valve is opened and make the compressor access the refrigerant circuit when the second valve is closed.

3. The air conditioning system of claim 1, wherein, The first valve assembly comprises a third valve and a fourth valve, the third valve is connected with an outlet of the first heat exchanger and an inlet of the cold storage device, and the fourth valve is connected with an outlet of the first heat exchanger and an inlet of the second heat exchanger.

4. The air conditioning system of claim 1, wherein, The second valve assembly comprises a fifth valve and a sixth valve, the fifth valve is connected with an outlet of the cold storage device and an outlet of the second heat exchanger, and the sixth valve is connected with an outlet of the cold storage device and an inlet of the second heat exchanger.

5. The air conditioning system of claim 1, wherein, The air conditioning system has a cooling mode and a cooling+storage mode. In the cooling mode, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make one of the following cold sources supply cooling to the second heat exchanger: a fluorine pump, a compressor, a fluorine pump+compressor, a storage device, a fluorine pump+storage device, a compressor+storage device, and a fluorine pump+compressor+storage device. In the cooling+storage mode, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make one of the following cold sources supply cooling to the second heat exchanger: a fluorine pump, a compressor, and a fluorine pump+compressor, and to control the second switching assembly to make the storage device store the cold quantity of the first heat exchanger.

6. The air conditioning system of claim 5, wherein when the air conditioning system is powered off, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the storage device supply cooling to the second heat exchanger; when the air conditioning system is powered on, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make one of the following cold sources supply cooling to the second heat exchanger: a fluorine pump, a compressor, a fluorine pump+compressor, a fluorine pump+storage device, a compressor+storage device, and a fluorine pump+compressor+storage device, and to control the second switching assembly to make the storage device store the cold quantity of the first heat exchanger.

7. The air conditioning system of claim 6, wherein when T0-T1>T', the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the fluorine pump supply cooling to the second heat exchanger; when T''<T0-T1≤T', the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the fluorine pump+compressor supply cooling to the second heat exchanger, and the compressor operates at a first power; when T0-T1≤T'', the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the compressor supply cooling to the second heat exchanger, and the compressor operates at a second power; wherein T0 is the temperature of the cooling liquid at the inlet of the second heat exchanger, T1 is the ambient temperature, T' is a first set value, T'' is a second set value, and T'>T'', and the first power is less than the second power.

8. The air conditioning system of claim 7, wherein after the fluorine pump supplies cooling to the second heat exchanger, if Tb after the fluorine pump supplies cooling to the second heat exchanger, if T0>Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the fluorine pump+storage device supply cooling to the second heat exchanger for a first preset time length; after the fluorine pump supplies cooling to the second heat exchanger, if T0≤Tb, the air conditioning system enters the cooling+storage mode. In the cooling supply + cold storage mode, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the fluorine pump supply cold to the second heat exchanger, and control the second switching assembly to make the cold storage device store cold of the first heat exchanger. Wherein, Ta is the first set temperature, Tb is the second set temperature, and Ta > Tb.

9. The air conditioning system of claim 8, wherein, After making the fluorine pump supply cold to the second heat exchanger and controlling the second switching assembly to make the cold storage device store cold of the first heat exchanger, if T0 ≤ Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue making the fluorine pump supply cold to the second heat exchanger, and continue controlling the second switching assembly to make the cold storage device store cold of the first heat exchanger. After making the fluorine pump supply cold to the second heat exchanger and controlling the second switching assembly to make the cold storage device store cold of the first heat exchanger, if T0 > Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the fluorine pump + cold storage device supply cold to the second heat exchanger for the first preset time length.

10. The air conditioning system of claim 8 or 9, wherein, After making the fluorine pump + cold storage device supply cold to the second heat exchanger for the first preset time length, if T0 ≤ Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue making the fluorine pump + cold storage device supply cold to the second heat exchanger for the first preset time length. After making the fluorine pump + cold storage device supply cold to the second heat exchanger for the first preset time length, if T0 > Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the fluorine pump + compressor supply cold to the second heat exchanger, and the compressor operates at the first power.

11. The air conditioning system of claim 7, wherein, After making the fluorine pump + compressor supply cold to the second heat exchanger, and the compressor operates at the first power, if Tb < T0 ≤ Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue making the fluorine pump + compressor supply cold to the second heat exchanger, and the compressor operates at the first power. After making the fluorine pump + compressor supply cold to the second heat exchanger, and the compressor operates at the first power, if T0 > Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the fluorine pump + compressor + cold storage device supply cold to the second heat exchanger for the second preset time length. After making the fluorine pump supply cold to the second heat exchanger, and the compressor operates at the first power, if T0 ≤ Tb and t ≤ t1, or T0 ≤ Tb and t ≥ t2, enter the cooling supply + cold storage mode. In the cooling supply + cold storage mode, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the fluorine pump + compressor supply cold to the second heat exchanger, and control the second switching assembly to make the cold storage device store the cold quantity of the first heat exchanger. Wherein, t is the current time, t1 is the first set time, t2 is the second set time, t ∈ [0h, 24h], t1 < t2.

12. The air conditioning system of claim 11, wherein, After making the fluorine pump + compressor supply cold to the second heat exchanger, and controlling the second switching assembly to make the cold storage device store the cold quantity of the first heat exchanger, if T0 ≤ Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue to make the fluorine pump + compressor supply cold to the second heat exchanger, and control the second switching assembly to continue to make the cold storage device store the cold quantity of the first heat exchanger; After making the fluorine pump + compressor supply cold to the second heat exchanger, and controlling the second switching assembly to make the cold storage device store the cold quantity of the first heat exchanger, if T0 > Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the fluorine pump + compressor + cold storage device supply cold to the second heat exchanger for a second preset time.

13. The air conditioning system of claim 11 or 12, wherein, After making the fluorine pump + compressor + cold storage device supply cold to the second heat exchanger for a second preset time, if T0 ≤ Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue to make the fluorine pump + compressor + cold storage device supply cold to the second heat exchanger for a second preset time; After making the fluorine pump + compressor + cold storage device supply cold to the second heat exchanger for a second preset time, if T0 > Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the compressor supply cold to the second heat exchanger, and the compressor operates at a second power.

14. The air conditioning system of claim 7, wherein, After making the compressor supply cold to the second heat exchanger, and the compressor operates at a second power, if Tb < T0 ≤ Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue to make the compressor supply cold to the second heat exchanger, and the compressor operates at a second power; After making the compressor supply cold to the second heat exchanger, and the compressor operates at a second power, if T0 > Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the compressor + cold storage device supply cold to the second heat exchanger for a third preset time, and the compressor operates at a third power; After making the compressor supply cold to the second heat exchanger, and the compressor operates at a second power, if T0 ≤ Tb and t ≤ t1, or T0 ≤ Tb and t ≥ t2, enter the cooling supply + cold storage mode. In the cooling+storage mode, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the compressor supply cold to the second heat exchanger, and control the second switching assembly to make the cold storage device store the cold of the first heat exchanger. Wherein, t is the current time, t1 is the first set time, t2 is the second set time, t∈[0h, 24h], t1 15. The air conditioning system of claim 14, wherein, After making the compressor supply cold to the second heat exchanger and controlling the second switching assembly to make the cold storage device store the cold of the first heat exchanger, if T0≤Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue to make the compressor supply cold to the second heat exchanger, and continue to control the second switching assembly to make the cold storage device store the cold of the first heat exchanger. After making the compressor supply cold to the second heat exchanger and controlling the second switching assembly to make the cold storage device store the cold of the first heat exchanger, if T0>Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the compressor+cold storage device supply cold to the second heat exchanger for a third preset time, and the compressor runs at a third power.

16. The air conditioning system of claim 14 or 15, wherein, After making the compressor+cold storage device supply cold to the second heat exchanger for a third preset time, and the compressor runs at a third power, if T0≤Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue to make the compressor+cold storage device supply cold to the second heat exchanger for a third preset time, and the compressor runs at a third power. After making the compressor+cold storage device supply cold to the second heat exchanger for a third preset time, and the compressor runs at a third power, if T0>Ta, the air conditioning system is configured to control the compressor to run at a fourth power until T0≤Ta. Wherein, the third power is less than the fourth power.

17. The air conditioning system of claim 16, wherein, After controlling the compressor to run at a fourth power until T0≤Ta, if T0>Tb, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the compressor supply cold to the second heat exchanger, and the compressor runs at a second power. After controlling the compressor to run at a fourth power until T0≤Ta, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, enter the cooling+storage mode. In the cooling+storage mode, the air conditioning system is configured to control the first switching assembly and the second switching assembly to make the compressor supply cold to the second heat exchanger, and control the second switching assembly to make the cold storage device store the cold of the first heat exchanger.

18. A control method of an air conditioning system, characterized by, The air conditioning system comprises an air conditioning refrigeration system and a cold storage heat exchange system, the air conditioning refrigeration system is connected with the cold storage heat exchange system through a first heat exchanger, the cold storage heat exchange system comprises a cold storage device and a second heat exchanger for heat exchange with a load, the air conditioning refrigeration system comprises a natural cold source and a mechanical cold source, and the cold storage heat exchange system comprises a cold storage cold source; The control method comprises: According to the current signal, the temperature of the cooling liquid at the inlet of the second heat exchanger and the ambient temperature, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to make at least one of the natural cold source, the mechanical cold source and the cold storage cold source supply cold to the second heat exchanger, the air conditioning refrigeration system is controlled to make at least one of the natural cold source and the mechanical cold source supply cold to the cold storage device, and the cold storage heat exchange system is controlled to make the cold storage cold source supply cold to the second heat exchanger; The control method specifically comprises: When the current signal is normal, according to the temperature of the cooling liquid at the inlet of the second heat exchanger and the ambient temperature, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to make at least one of the natural cold source, the mechanical cold source and the cold storage cold source supply cold to the second heat exchanger, and the air conditioning refrigeration system is controlled to make at least one of the natural cold source and the mechanical cold source supply cold to the cold storage device; When the current signal is interrupted, the cold storage heat exchange system is controlled to make the cold storage cold source supply cold to the second heat exchanger.

19. The control method according to claim 18, characterized by, The control method comprises: In the case of T0-T1>T', the air conditioning refrigeration system is controlled to make the natural cold source supply cold to the second heat exchanger; In the case of T''<T0-T1≤T', the air conditioning refrigeration system is controlled to make the natural cold source and the mechanical cold source supply cold to the second heat exchanger, and the mechanical cold source is operated at a first power; In the case of T0-T1≤T'', the air conditioning refrigeration system is controlled to make the mechanical cold source supply cold to the second heat exchanger, and the mechanical cold source is operated at a second power; Wherein, T0 is the temperature of the cooling liquid at the inlet of the second heat exchanger, T1 is the ambient temperature, T' is a first set value, T'' is a second set value, T'>T'', and the first power is less than the second power.

20. The control method according to claim 19, wherein The control method comprises: After the natural cold source supplies cold to the second heat exchanger, if Tb After the natural cold source supplies cold to the second heat exchanger, if T0> Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to make the natural cold source and the cold storage cold source supply cold to the second heat exchanger for a first preset time length; After the natural cold source supplies cold to the second heat exchanger, if T0≤Tb, the cold supply+storage mode is entered; In the cold supply+storage mode, the air conditioning refrigeration system is controlled to make the natural cold source supply cold to the second heat exchanger, and the air conditioning system is controlled to make the natural cold source supply cold to the cold storage device; Wherein, Ta is a first set temperature, Tb is a second set temperature, and Ta>Tb.

21. The control method according to claim 20, wherein The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. The control method comprises:

22. The control method according to claim 20 or 21, characterized by, After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length.

23. The control method according to claim 19, wherein The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length.

24. The control method according to claim 23, characterized by, The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. The control method comprises: After the natural cold source supplies cold to the second heat exchanger and the air conditioning system controls the natural cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to supply cold to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time length. After the natural cold source and the mechanical cold source supply cold to the second heat exchanger, and the air conditioning system controls the natural cold source and the mechanical cold source to supply cold to the cold storage device, if T0>Ta, the air conditioning system and the cold storage heat exchange system control the natural cold source, the mechanical cold source and the cold storage cold source to supply cold to the second heat exchanger for a second preset time length.

25. The control method according to claim 23 or 24, characterized by, The control method comprises: After the natural cold source, the mechanical cold source and the cold storage cold source supply cold to the second heat exchanger for a second preset time length, if T0≤Ta, the air conditioning system and the cold storage heat exchange system continue to control the natural cold source, the mechanical cold source and the cold storage cold source to supply cold to the second heat exchanger for a second preset time length. After the natural cold source, the mechanical cold source and the cold storage cold source supply cold to the second heat exchanger for a second preset time length, if T0>Ta, the air conditioning system controls the mechanical cold source to supply cold to the second heat exchanger, and the mechanical cold source operates at a second power.

26. The control method according to claim 19, wherein The control method comprises: After the mechanical cold source supplies cold to the second heat exchanger, and the mechanical cold source operates at a second power, if Tb After the mechanical cold source supplies cold to the second heat exchanger, and the mechanical cold source operates at a second power, if T0>Ta, the air conditioning system and the cold storage heat exchange system control the cold storage cold source and the mechanical cold source to supply cold to the second heat exchanger for a third preset time length, and the mechanical cold source operates at a third power. After the mechanical cold source supplies cold to the second heat exchanger, and the mechanical cold source operates at a second power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+storage mode is entered. In the cooling+storage mode, the air conditioning system controls the mechanical cold source to supply cold to the second heat exchanger, and controls the air conditioning system to supply cold to the cold storage device. Wherein, t is the current time, t1 is the first set time, t2 is the second set time, t∈[0h, 24h], t1 27. The control method according to claim 26, wherein The control method comprises: After the mechanical cold source supplies cold to the second heat exchanger, and the air conditioning system controls the mechanical cold source to supply cold to the cold storage device, if T0≤Ta, the air conditioning system continues to control the mechanical cold source to supply cold to the second heat exchanger, and continues to control the air conditioning system to supply cold to the cold storage device. After the mechanical cold source supplies cold to the second heat exchanger, and the air conditioning system controls the mechanical cold source to supply cold to the cold storage device, if T0>Ta, the air conditioning system and the cold storage heat exchange system control the cold storage cold source and the mechanical cold source to supply cold to the second heat exchanger for a third preset time length, and the mechanical cold source operates at a third power.

28. The control method according to claim 26 or 27, characterized by, The control method comprises: After the cold storage cold source and the mechanical cold source supply cold to the second heat exchanger for a third preset time length with the mechanical cold source running at a third power, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system continue to make the cold storage cold source and the mechanical cold source supply cold to the second heat exchanger for a third preset time length with the mechanical cold source running at a third power; After the cold storage cold source and the mechanical cold source supply cold to the second heat exchanger for a third preset time length with the mechanical cold source running at a third power, if T0>Ta, the mechanical cold source supplies cold to the second heat exchanger until T0≤Ta with the mechanical cold source running at a fourth power; The third power is less than the fourth power.

29. The control method according to claim 28, wherein The control method comprises: After the mechanical cold source supplies cold to the second heat exchanger until T0≤Ta with the mechanical cold source running at a fourth power, if T0>Tb, the air conditioning refrigeration system makes the mechanical cold source supply cold to the second heat exchanger with the mechanical cold source running at a second power; After the mechanical cold source supplies cold to the second heat exchanger until T0≤Ta with the mechanical cold source running at a fourth power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+storage mode is entered; In the cooling+storage mode, the air conditioning refrigeration system makes the mechanical cold source supply cold to the second heat exchanger, and the air conditioning system makes the mechanical cold source supply cold to the cold storage device.

30. The control method according to claim 19, wherein The air conditioning refrigeration system comprises a refrigerant circuit, a fluorine pump, a compressor and a first switching assembly, the first switching assembly is connected with the refrigerant circuit, the fluorine pump and the compressor, and the first switching assembly is configured to control the fluorine pump and the compressor to access and move out of the refrigerant circuit; The cold storage heat exchange system comprises a cooling liquid circuit, a cold storage device and a second switching assembly, the cooling liquid circuit and the refrigerant circuit are connected through the first heat exchanger, the cooling liquid circuit comprises the second heat exchanger which is used for heat exchange with the load, and the second switching assembly is connected with the cold storage device, the first heat exchanger and the second heat exchanger, and the second switching assembly is configured to control the cold storage device to access and move out of the cooling liquid circuit.

31. The control method according to claim 30, wherein The first switching assembly comprises a first valve and a second valve; One end of the first valve is connected with the inlet of the fluorine pump, the other end is connected with the outlet of the fluorine pump, and the first switching assembly is configured to make the fluorine pump move out of the refrigerant circuit when the first valve is opened, and make the fluorine pump access the refrigerant circuit when the first valve is closed; One end of the second valve is connected with the inlet of the compressor, the other end is connected with the outlet of the compressor, and the first switching assembly is configured to make the compressor move out of the refrigerant circuit when the second valve is opened, and make the compressor access the refrigerant circuit when the second valve is closed.

32. The control method according to claim 30, wherein The second switching assembly comprises a first valve assembly and a second valve assembly; The first valve assembly is connected with an outlet of the first heat exchanger, an inlet of the cold storage device and an inlet of the second heat exchanger, and is configured to control whether the cooling liquid flowing out of the first heat exchanger flows into the cold storage device; The second valve assembly is connected with an outlet of the cold storage device, an inlet and an outlet of the second heat exchanger and an inlet of the first heat exchanger, and is configured to control whether the cooling liquid flowing out of the cold storage device flows back to the first heat exchanger through the second heat exchanger.

33. A control device of an air conditioning system, characterized by comprising: comprising a processor and a memory; The memory stores a computer program, and the computer program, when executed by the processor, implements the steps of the control method of any one of claims 18-32.

34. An air conditioning system comprising: comprising the control device of claim 33.

35. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the control method of any one of claims 18-32.

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