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

Abstract

The invention 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 comprises a refrigerant loop, a fluorine pump, a compressor and a first switching assembly, and the first switching assembly is configured to control the fluorine pump and the compressor to be connected into the refrigerant loop and move out of the refrigerant loop; the cold accumulation and heat exchange system comprises a cooling liquid loop, a cold accumulation device and a second switching assembly, the cooling liquid loop comprises a second heat exchanger, the second heat exchanger is used for exchanging heat with a load, and the second switching assembly is connected with the cold accumulation device, the first heat exchanger and the second heat exchanger; the second switching assembly is configured to control the cold storage device to be connected into the cooling liquid loop and move out of the cooling liquid loop. And under the condition that the cold storage device is connected into the cooling liquid loop, the cold storage device is configured to store the cooling capacity of the first heat exchanger and supply cold to the second heat exchanger. According to the air conditioning system, the energy consumption of the air conditioning system can be reduced to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning and refrigeration, and in particular to an air conditioning system, a control method, a control device and a computer-readable storage medium. Background Art

[0002] As the core infrastructure supporting the rapid development of industries such as 5G, Internet of Things, and artificial intelligence, data centers have shown explosive growth in recent years. However, the energy consumption of data centers is also expanding. At present, the energy consumption cost of data centers has accounted for more than 60% of the long-term operating costs of data centers, becoming a bottleneck problem restricting the development of the data center industry. Since 40% of the energy consumed by data centers is used to operate refrigeration equipment, reducing the energy consumption of refrigeration equipment is one of the most effective means to reduce the PUE (Power Usage Effectiveness) of data centers. Summary of the invention

[0003] Embodiments of the present invention provide 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 in an embodiment of the present invention comprises: an air conditioning refrigeration system, the air conditioning refrigeration system comprising a refrigerant circuit, a fluorine pump, a compressor and a first switching component, the first switching component is connected to the refrigerant circuit, the fluorine pump and the compressor, and the first switching component is configured to control the fluorine pump and the compressor to be connected to the refrigerant circuit and removed from the refrigerant circuit;

[0005] A cold storage and heat exchange system, the cold storage and heat exchange system comprising 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 comprises a second heat exchanger, the second heat exchanger is used to exchange heat with a load, the second switching component is connected to the cold storage device, the first heat exchanger and the second heat exchanger, and the second switching component is configured to control the cold storage device to be connected to the coolant circuit and removed from the coolant circuit;

[0006] When the cold storage device is connected to the coolant 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.

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

[0008] In certain embodiments, the first switching assembly includes a first valve and a second valve;

[0009] One end of the first valve is connected to the inlet of the fluorine pump, and the other end is connected to the outlet of the fluorine pump, and the first switching component is configured to move the fluorine pump out of the refrigerant circuit when the first valve is opened; and connect the fluorine 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 move the compressor out of the refrigerant circuit when the second valve is opened, 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, 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 certain embodiments, the first valve assembly includes a third valve and a fourth valve, the third valve connecting the outlet of the first heat exchanger and the inlet of the cold storage device, and the fourth valve connecting the outlet of the first heat exchanger and the inlet of the second heat exchanger.

[0014] In certain embodiments, the second valve assembly includes a fifth valve and a sixth valve, the fifth valve connecting the outlet of the cold storage device and the outlet of the second heat exchanger, and the sixth valve connecting 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 enable one of the following cold sources to provide cooling for the second heat exchanger: a fluorine pump, a compressor, a fluorine pump + a compressor, a cold storage device, a fluorine pump + a cold storage device, a compressor + a cold storage device, a fluorine 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 so that one of the following cold sources supplies cold to the second heat exchanger: a fluorine pump, a compressor, or a fluorine pump + a compressor, and is configured to control the second switching component so that the cold storage device stores the cold of the first heat exchanger.

[0017] In certain 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 enable the cold storage device to provide cooling for 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 so that one of the following cold sources provides cooling for the second heat exchanger: fluorine pump, compressor, fluorine pump + compressor, fluorine pump + cold storage device, compressor + cold storage device, fluorine pump + compressor + cold storage device, and is configured to control the second switching component so that the cold storage device stores the cold of the first heat exchanger.

[0019] In certain embodiments, when T0-T1>T', the air conditioning system is configured to control the first switching component and the second switching component to enable the fluorine pump to provide cooling for the second heat exchanger;

[0020] In the case of T″<T0-T1≤T', the air conditioning system is configured to control the first switching component and the second switching component to enable the fluorine pump+compressor to provide cooling for the second heat exchanger, and the compressor operates at a first power;

[0021] In the case of T0-T1≤T", the air conditioning system is configured to control the first switching component and the second switching component to enable the compressor to provide cooling for the second heat exchanger, and the compressor operates at a second power;

[0022] Wherein, 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 fluorine pump provides cooling for 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 allow the fluorine pump to provide cooling for the second heat exchanger;

[0024] After the fluorine pump provides cooling for 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 allow the fluorine pump+cooling storage device to provide cooling for the second heat exchanger for a first preset time period;

[0025] After the fluorine pump is used to provide cooling for the second heat exchanger, if T0≤Tb, the cooling+cooling 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 so that the fluorine pump supplies cold to the second heat exchanger, and control the second switching component so that the cold storage device stores the cold of the first heat exchanger;

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

[0028] In some embodiments, after the fluorine pump is made to supply cold to the second heat exchanger, and the second switching component is controlled 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 component and the second switching component to continue to make the fluorine pump supply cold to the second heat exchanger, and continue to control the second switching component to make the cold storage device store the cold of the first heat exchanger;

[0029] After enabling the fluorine pump to supply cooling to the second heat exchanger and controlling the second switching component to enable the cold storage device to store the cold 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 enable the fluorine pump+cold storage device to supply cooling to the second heat exchanger for the first preset time period.

[0030] In some embodiments, after the fluorine pump + cold storage device provides cooling for 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 continue to allow the fluorine pump + cold storage device to provide cooling for the second heat exchanger for the first preset time;

[0031] After the fluorine pump + cold storage device provides cooling for the second heat exchanger for a first preset period of time, if T0>Ta, the air-conditioning system is configured to control the first switching component and the second switching component to make the fluorine pump + compressor provide cooling for the second heat exchanger, and the compressor operates at a first power.

[0032] In some embodiments, after the fluorine pump + compressor is used to cool the second heat exchanger and the compressor is operated at the 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 to use the fluorine pump + compressor to cool the second heat exchanger and the compressor is operated at the first power;

[0033] After the fluorine pump + compressor is used to cool the second heat exchanger and the compressor is operated at the first power, if T0>Ta, the air conditioning system is configured to control the first switching component and the second switching component to allow the fluorine pump + compressor + cold storage device to cool the second heat exchanger for a second preset time period;

[0034] After the fluorine pump is used to provide cooling for the second heat exchanger and the compressor is operated at the first power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+cooling 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 enable the fluorine pump + compressor to provide cold for the second heat exchanger, and control the second switching component to enable the cold storage device to store the cold of the first heat exchanger;

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

[0037] In some embodiments, after the fluorine pump + compressor is used to supply cold to the second heat exchanger, and the second switching component is controlled 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 component and the second switching component to continue to make the fluorine pump + compressor supply cold to the second heat exchanger, and control the second switching component to continue to make the cold storage device store the cold of the first heat exchanger;

[0038] After the fluorine pump + compressor is used to supply cooling to the second heat exchanger, and the second switching component is controlled 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 component and the second switching component to make the fluorine pump + compressor + cold storage device supply cooling to the second heat exchanger for a second preset period of time.

[0039] In some embodiments, after the fluorine pump + compressor + cold storage device provides cooling for 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 continue to allow the fluorine pump + compressor + cold storage device to provide cooling for the second heat exchanger for a second preset time;

[0040] After the fluorine pump + compressor + cold storage device provides cooling for the second heat exchanger for a second preset period of time, if T0>Ta, the air-conditioning system is configured to control the first switching component and the second switching component to enable the compressor to provide cooling for the second heat exchanger, and the compressor operates at a second power.

[0041] In certain embodiments, after the compressor is made to provide cooling for the second heat exchanger and the compressor is operated at the 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 make the compressor provide cooling for the second heat exchanger and the compressor is operated at the second power;

[0042] After the compressor is made to cool the second heat exchanger and the compressor is operated at the second power, if T0>Ta, the air conditioning system is configured to control the first switching component and the second switching component to make the compressor+cooling storage device cool the second heat exchanger for a third preset time, and the compressor is operated at the third power;

[0043] After the compressor is used to provide cooling for the second heat exchanger and the compressor is operated at the second power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+cooling 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 so that the compressor supplies cold to the second heat exchanger, and control the second switching component so that the cold storage device stores cold energy of the first heat exchanger;

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

[0046] In certain embodiments, after the compressor is caused to supply cold to the second heat exchanger, and the second switching component is controlled to cause the cold storage device to store cold 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 continue to cause the compressor to supply cold to the second heat exchanger, and to continue to control the second switching component to cause the cold storage device to store cold of the first heat exchanger;

[0047] After the compressor is controlled to supply cold to the second heat exchanger and the second switching component is controlled 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 component and the second switching component to make the compressor + cold storage device supply cold to the second heat exchanger for a third preset period of time, and the compressor operates at a third power.

[0048] In certain embodiments, after the compressor + cold storage device provides cooling for 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 to allow the compressor + cold storage device to provide cooling for the second heat exchanger for a third preset time and the compressor operates at a third power;

[0049] After the compressor + the cold storage device provide cooling for 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] Wherein, the third power is smaller than the fourth power.

[0051] In certain embodiments, after controlling the compressor to operate at the 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 allow the compressor to provide cooling for the second heat exchanger, and the compressor operates at the 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, entering the cooling+cooling storage mode;

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

[0054] An embodiment of the present invention provides a control method for an air conditioning system, wherein the air conditioning system includes an air conditioning refrigeration system and a cold storage heat exchange system, wherein the air conditioning refrigeration system is connected to the cold storage heat exchange system via a first heat exchanger, wherein the cold storage heat exchange system includes a cold storage device and a second heat exchanger for exchanging heat with a load, wherein the air conditioning refrigeration system includes a natural cold source and a mechanical cold source, and wherein the cold storage heat exchange system includes a cold storage cold source;

[0055] The control method comprises:

[0056] According to 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 so that at least one of the natural cold source, the mechanical cold source and the cold storage cold source supplies cold to the second heat exchanger, the air-conditioning refrigeration system is controlled so that at least one of the natural cold source and the mechanical cold source supplies cold to the cold storage device, and the cold storage heat exchange system is controlled so that the cold storage cold source supplies cold to the second heat exchanger.

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

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

[0059] When the current signal is normal, according to 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 so that at least one of the natural cold source, the mechanical cold source and the cold storage cold source supplies cold to the second heat exchanger, and the air conditioning refrigeration system is controlled so that at least one of the natural cold source and the mechanical cold source supplies cold to the cold storage device;

[0060] When the current signal is interrupted, the cold storage and heat exchange system is controlled so that the cold storage cold source provides cooling for the second heat exchanger.

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

[0062] In the case of T0-T1>T', controlling the air conditioning refrigeration system so that the natural cold source provides cooling for the second heat exchanger;

[0063] In the case of T″<T0-T1≤T', controlling the air conditioning refrigeration system so that the natural cold source and the mechanical cold source provide cold for the second heat exchanger, and the mechanical cold source operates at a first power;

[0064] In the case of T0-T1≤T", the air conditioning refrigeration system is controlled so that the mechanical cold source provides cold for the second heat exchanger, and the mechanical cold source operates at a second power;

[0065] Wherein, 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 comprises:

[0067] After the natural cold source is used to provide cooling for the second heat exchanger, if Tb<T0≤Ta, controlling the air conditioning refrigeration system to continue to use the natural cold source to provide cooling for the second heat exchanger;

[0068] After the natural cold source provides cooling for the second heat exchanger, if T0>Ta, controlling the air conditioning refrigeration system and the cold storage heat exchange system to allow the natural cold source and the cold storage cold source to provide cooling for the second heat exchanger for a first preset time period;

[0069] After the natural cold source provides cooling for the second heat exchanger, if T0≤Tb, the cooling+cooling storage mode is entered;

[0070] In the cooling + cold storage mode, the air conditioning refrigeration system is controlled so that the natural cold source provides cold to the second heat exchanger, and the air conditioning system is controlled so that the natural cold source provides cold to the cold storage device;

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

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

[0073] After the natural cold source is used to cool the second heat exchanger, and the air conditioning system is controlled to cool the cold storage device, if T0≤Ta, the air conditioning refrigeration system is controlled to continue to cool the second heat exchanger with the natural cold source, and the air conditioning system is controlled to continue to cool the cold storage device with the natural cold source;

[0074] After the natural cold source is used to provide cooling for the second heat exchanger, and the air-conditioning system is controlled to make the natural cold source provide cooling for the cold storage device, 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 provide cooling for the second heat exchanger for a first preset period of time.

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

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

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

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

[0079] After the natural cold source and the mechanical cold source are used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the first power, if Tb<T0≤Ta, the air conditioning refrigeration system is controlled to continue to use the natural cold source and the mechanical cold source to provide cooling for the second heat exchanger and the mechanical cold source is operated at the first power;

[0080] After the natural cold source and the mechanical cold source are used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the first power, if T0>Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to allow the natural cold source, the mechanical cold source and the cold storage cold source to provide cooling for the second heat exchanger for a second preset time period;

[0081] After the natural cold source and the mechanical cold source are used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the first power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+cooling storage mode is entered;

[0082] In the cooling + cold storage mode, the air conditioning refrigeration system is controlled so that the natural cold source and the mechanical cold source provide cold for the second heat exchanger, and the air conditioning system is controlled so that the natural cold source and the mechanical cold source provide cold for the cold storage device;

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

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

[0085] After the natural cold source and the mechanical cold source are used to cool the second heat exchanger, and the air conditioning system is controlled to make the natural cold source and the mechanical cold source cool the cold storage device, if T0≤Ta, the air conditioning refrigeration system is controlled to continue to make the natural cold source and the mechanical cold source cool the second heat exchanger, and the air conditioning system is controlled to continue to make the natural cold source and the mechanical cold source cool the cold storage device;

[0086] After allowing the natural cold source and the mechanical cold source to supply cooling to the second heat exchanger, and controlling the air-conditioning system to allow the natural cold source and the mechanical cold source to supply cooling to the cold storage device, if T0>Ta, controlling the air-conditioning refrigeration system and the cold storage heat exchange system to allow the natural cold source, the mechanical cold source and the cold storage cold source to supply cooling to the second heat exchanger for a second preset period of time.

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

[0088] After the natural cold source, the mechanical cold source and the cold storage cold source provide cooling for the second heat exchanger for a second preset time, if T0≤Ta, control the air conditioning refrigeration system and the cold storage heat exchange system to continue to allow the natural cold source, the mechanical cold source and the cold storage cold source to provide cooling for the second heat exchanger for a second preset time;

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

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

[0091] After the mechanical cold source is used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the second power, if Tb<T0≤Ta, the air conditioning refrigeration system is controlled to continue to use the mechanical cold source to provide cooling for the second heat exchanger and the mechanical cold source is operated at the second power;

[0092] After the mechanical cold source is used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the second power, if T0>Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to allow the cold storage cold source and the mechanical cold source to provide cooling for the second heat exchanger for a third preset time, and the mechanical cold source is operated at the third power;

[0093] After the mechanical cold source is used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the second power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+cooling storage mode is entered;

[0094] In the cooling + cold storage mode, the air conditioning refrigeration system is controlled so that the mechanical cold source provides cold to the second heat exchanger, and the air conditioning system is controlled so that the mechanical cold source provides cold to the cold storage device;

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

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

[0097] After the mechanical cold source is controlled to provide cooling for the second heat exchanger, and the air conditioning system is controlled to provide cooling for the cold storage device, if T0≤Ta, the air conditioning refrigeration system is controlled to continue to provide cooling for the second heat exchanger by the mechanical cold source, and the air conditioning system is controlled to continue to provide cooling for the cold storage device by the mechanical cold source;

[0098] After the mechanical cold source is made to supply cold to the second heat exchanger, and the air-conditioning system is controlled to make the mechanical cold source supply cold to the cold storage device, if T0>Ta, the air-conditioning refrigeration system and the cold storage heat exchange system are controlled to make the cold storage cold source and the mechanical cold source supply cold to the second heat exchanger for a third preset period of time, and the mechanical cold source operates at a third power.

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

[0100] After the cold storage cold source and the mechanical cold source provide cooling for the second heat exchanger for a third preset time and the mechanical cold source operates at a third power, if T0≤Ta, controlling the air conditioning refrigeration system and the cold storage heat exchange system to continue to allow the cold storage cold source and the mechanical cold source to provide cooling for the second heat exchanger for a third preset time and the mechanical cold source operates at a third power;

[0101] After the cold storage cold source and the mechanical cold source provide cooling for 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 provides cooling for the second heat exchanger until T0≤Ta, and the mechanical cold source operates at a fourth power;

[0102] Wherein, the third power is smaller than the fourth power.

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

[0104] After the mechanical cold source is used to provide cooling for the second heat exchanger until T0≤Ta and the mechanical cold source is operated at the fourth power, if T0>Tb, the air conditioning refrigeration system is controlled to allow the mechanical cold source to provide cooling for the second heat exchanger and the mechanical cold source is operated at the second power;

[0105] The mechanical cold source is used to provide cooling for the second heat exchanger until T0≤Ta, and after the mechanical cold source is operated at the fourth power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+cooling storage mode is entered;

[0106] In the cooling+cooling storage mode, the air conditioning refrigeration system is controlled so that the mechanical cold source provides cooling for the second heat exchanger, and the air conditioning system is controlled so that the mechanical cold source provides cooling for the cool storage device.

[0107] In some embodiments, the air conditioning refrigeration system includes a refrigerant circuit, a fluorine pump, a compressor and a first switching component, wherein the first switching component is connected to the refrigerant circuit, the fluorine pump and the compressor, and the first switching component is configured to control the fluorine pump and the compressor to be connected to and removed from 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 the first heat exchanger. The coolant circuit includes the second heat exchanger. The second heat exchanger is used to exchange 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 be connected to the coolant circuit and removed from the coolant circuit.

[0109] In certain embodiments, the first switching assembly includes a first valve and a second valve;

[0110] One end of the first valve is connected to the inlet of the fluorine pump, and the other end is connected to the outlet of the fluorine pump, and the first switching component is configured to move the fluorine pump out of the refrigerant circuit when the first valve is opened; and connect the fluorine 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 move the compressor out of the refrigerant circuit when the second valve is opened, and to connect the compressor to the refrigerant circuit when the second valve is closed.

[0112] In certain embodiments, the second switching assembly 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] An embodiment of the present invention provides a control device for an air conditioning system, the control device comprising a processor and a memory;

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

[0117] An embodiment of the present invention provides an air conditioning system, and the air conditioning system includes the control device described in the above embodiment.

[0118] An embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the control method described in any of the above embodiments are implemented.

[0119] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0122] Figures 2 to 13 is a flow chart of a control method according to an embodiment of the present invention;

[0123] Fig.14 Schematic diagram of a control device according to an embodiment of the present invention.

[0124] Description of main reference numerals:

[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, fluorine pump 103, compressor 104, throttling device 105, water pump 202, cold storage device 203, first switching component 106, second switching component 204, first valve 107, second valve 108, first valve component 205, second valve component 206, third valve 207, fourth valve 208, fifth valve 209, sixth valve 210. DETAILED DESCRIPTION

[0126] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0127] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0128] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0129] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0130] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0131] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0132] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. 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 cannot be understood as limiting the embodiments of the present invention.

[0133] See also Figure 1 , an embodiment of the present invention provides 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 includes a refrigerant circuit, a fluorine pump 103, a compressor 104 and a first switching component 106. The first switching component 106 is connected to the refrigerant circuit, the fluorine pump 103 and the compressor 104. The first switching component 106 is configured to control the fluorine pump 103 and the compressor 104 to be connected to the refrigerant circuit and removed from the refrigerant circuit.

[0134] The cold storage and heat exchange system 200 includes a coolant circuit, a coolant storage device 203, and a second switching component 204. The coolant circuit and the refrigerant circuit are connected through the first heat exchanger 101. The coolant circuit includes a second heat exchanger 201, and the second heat exchanger 201 is used to exchange heat with a load. The second switching component 204 is connected to the coolant storage device 203, the first heat exchanger 101, and the second heat exchanger 201. The second switching component 204 is configured to control the coolant storage device 203 to be connected to the coolant circuit and removed 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 supply cold energy to the second heat exchanger 201 .

[0136] In the above-mentioned air-conditioning system 1000, on the one hand, the air-conditioning refrigeration system 100 can utilize the mutual cooperation of the fluorine pump 103, the compressor 104 and the first switching component 106 to utilize the natural cold source and / or the mechanical cold source of the compressor 104 to provide cold energy to the first heat exchanger 101. On the other hand, the cold storage heat exchange system 200 can utilize the mutual cooperation of the cold storage device 203 and the second switching component 204 to enable 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, 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 for adjusting temperature. The load may be a heat generating component of a data center, such as a computer room. A data center is a facility for centrally storing, managing, and processing a large amount of data, which generates a large amount of heat during operation, which may affect the normal operation of the data center and even affect the environment and personnel safety. In order to effectively control the temperature of the data center, an embodiment of the present invention provides an air conditioning system 1000 for use in a data center, which can ensure the normal operation of the data center to a certain extent, and at the same time can reduce the energy consumption of the air conditioning system 1000 to a certain extent, thereby reducing the PUE of the data center and reducing the long-term operating costs of the data center.

[0138] The air conditioning system 1000 includes an air conditioning refrigeration system 100 and a cold storage and heat exchange system 200, and the air conditioning refrigeration system 100 and the cold storage and heat exchange system 200 are connected through a first heat exchanger 101 to achieve the transmission of cold. The air conditioning refrigeration system 100 can transfer the cold of the natural cold source and the mechanical cold source to the cold storage and heat exchange system 200. The cold storage and heat exchange system 200 can store the cold transmitted by the air conditioning refrigeration system 100, and further transmit it to the load. Among them, the natural cold source refers to the cold from the natural environment, that is, the low-temperature resources in nature are used for cooling. The mechanical cold source refers to the cold provided by mechanical equipment (such as a compressor 104), and the mechanical cold source requires energy to drive.

[0139] The air conditioning refrigeration system 100 includes a fluorine 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 element 105, and a first heat exchanger 101.

[0140] Fluorine pump 103 is a device for circulating and conveying refrigerant (such as Freon) in a refrigerant circuit. In the process of refrigerant circulating in the refrigerant circuit, the transfer and exchange of cold energy can be achieved, helping the load to reduce the temperature.

[0141] The throttling member 105 (such as an expansion valve or a throttle valve) can reduce the pressure and temperature of the refrigerant by limiting the flow rate of the refrigerant circulating in the refrigerant circuit. The compressor 104 can increase the pressure and temperature of the refrigerant by compressing the refrigerant. The throttling member 105 and the compressor 104 can transfer and exchange more cold energy during the refrigerant circulation in the refrigerant circuit.

[0142] The first heat exchanger 101 and the third heat exchanger 102 are devices for transferring heat (i.e., transferring cooling capacity) between different media. The first heat exchanger 101 can make the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 generate heat exchange. The third heat exchanger 102 can make the natural cold source and the refrigerant circulating in the refrigerant circuit generate heat exchange. The natural cold source can be low-temperature air, low-temperature water or other low-temperature substances in nature.

[0143] The first switching component 106 can be used to control the fluorine pump 103 and the compressor 104 to be connected to and removed from 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 fluorine pump 103 and the compressor 104 participate in the refrigeration process.

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

[0145] The water pump 202 is a device for circulating and conveying a cooling liquid (such as water) in a cooling liquid loop. In the process where the cooling liquid circulates in the cooling liquid loop, the transfer and exchange of cold energy can be achieved, helping the load to reduce the temperature.

[0146] The second heat exchanger 201 is a device used to transfer heat (that is, transfer cold) between different media. The second heat exchanger 201 can enable the cold storage and heat exchange system 200 to generate heat exchange 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 the air conditioning refrigeration 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 cold storage device 203 to be connected to and removed 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 increase the independence and flexibility of the cold storage device 203 to a certain extent by controlling the cold storage device 203 to access and remove from the coolant circuit, which is conducive to promoting the modularization of the air-conditioning system 1000, thereby helping to optimize energy distribution, thereby reducing the energy consumption of the air-conditioning system 1000 and improving the operating efficiency of the air-conditioning system 1000. At the same time, when the cold storage device 203 fails or requires maintenance, the air-conditioning system 1000 can maintain normal operation to a certain extent.

[0150] It should be noted that the fluorine pump 103 is used to circulate and transport the refrigerant in the refrigerant circuit. The water pump 202 is used to circulate and transport the coolant in the coolant circuit. In the present invention, the water pump 202 and the fluorine pump 103 are commonly used terms in the technical field and should not be regarded as limiting the refrigerant and coolant of the present invention.

[0151] It should be noted that when the refrigerant flows in the refrigerant circuit, the refrigerant can undergo phase change, thereby absorbing and releasing heat. The refrigerant includes but is not limited to alkanes, tetrafluoroethane, freon, propane (R290), isobutane, etc., and the present invention is not limited to this.

[0152] When the coolant flows in the coolant loop, the temperature of the coolant changes (increases or decreases), but basically no phase change occurs. The coolant includes but is not limited to water, ethylene glycol and mixtures thereof (such as ethylene glycol-water mixture), etc., and the present invention is not limited to this.

[0153] It should be noted that the air conditioning system 1000 of the embodiment of the present invention can be used for various loads that require temperature control, among which data centers are common application scenarios 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, etc. In one embodiment, the cold storage device 203 is filled with a phase change material, whose phase change point temperature is lower than the first set temperature and higher than the ambient temperature.

[0155] In some embodiments, please combine 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 fluorine pump 103, and the other end is connected to the outlet of the fluorine pump 103. The first switching assembly 106 is configured to move the fluorine pump 103 out of the refrigerant circuit when the first valve 107 is opened, and to connect the fluorine 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 connect the compressor 104 to the refrigerant circuit when the second valve 108 is closed.

[0158] In the above embodiment, the first valve 107 can control the fluorine pump 103 to be connected to and removed from the refrigerant circuit, and the second valve 108 can control the compressor 104 to be connected to and removed from the refrigerant circuit, so that the natural cold source and / or the mechanical cold source of the compressor 104 can be used to provide cold energy 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 for controlling the flow of the refrigerant by opening and closing a passage.

[0160] When the first valve 107 is open, the fluorine pump 103 stops running, and the refrigerant flows from the inlet of the fluorine pump 103 through the first valve 107 and does not pass through the fluorine pump 103 to the outlet of the fluorine pump 103, that is, the fluorine pump 103 is removed from the refrigerant circuit. When the first valve 107 is closed, the fluorine pump 103 is running, and the refrigerant flows from the inlet of the fluorine pump 103 through the fluorine pump 103 and does not pass through the first valve 107 to the outlet of the fluorine pump 103, that is, the fluorine pump 103 is connected to the refrigerant circuit.

[0161] When the second valve 108 is open, the compressor 104 stops running, and the refrigerant flows from the inlet of the compressor 104 to the outlet of the compressor 104 through the second valve 108 without passing through the compressor 104, that is, the compressor 104 is removed from the refrigerant circuit. When the second valve 108 is closed, the compressor 104 is running, and the refrigerant flows from the inlet of the compressor 104 to the outlet of the compressor 104 through the compressor 104 without passing through the second valve 108, that is, the compressor 104 is connected to the refrigerant circuit.

[0162] Optionally, the first valve 107 and the second valve 108 may be one-way valves for limiting the flow direction of the refrigerant.

[0163] In some embodiments, please combine 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 embodiment, the first valve assembly 205 can control the cold storage device 203 to be connected to and removed from the coolant circuit, and the second valve assembly 206 can control whether the cold storage device 203 stores the cold of the first heat exchanger 101, so that the cold storage device 203 can store the cold of the first heat exchanger 101 and supply cold to the second heat exchanger 201 by means of the mutual cooperation of the cold storage device 203, the first valve assembly 205 and the second valve assembly 206, 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 to the inlet of the second heat exchanger 201 through the first valve assembly 205, that is, the coolant flowing out of the first heat exchanger 101 does not flow into the cold storage device 203. In one embodiment, the coolant flows from the outlet of the first heat exchanger 101 to the inlet of the cold storage device 203 through the first valve assembly 205, 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 out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201. In one embodiment, the coolant flows from the outlet of the cold storage device 203 to the inlet of the second heat exchanger 201 through the second valve assembly 206, and then flows back to the inlet of the first heat exchanger 101 from the outlet of the second heat exchanger 201, that is, the coolant flowing out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201. In one embodiment, the coolant flows from the outlet of the cold storage device 203 to the outlet of the second heat exchanger 201 through the second valve assembly 206, and then flows back to the inlet of the first heat exchanger 101 from the outlet of the second heat exchanger 201, that is, the coolant flowing out of the cold storage device 203 flows back to the first heat exchanger 101 without passing through the second heat exchanger 201.

[0168] It is understandable that, when 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 loop. When 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 be connected to the coolant loop.

[0169] It is understandable that, when the coolant flowing out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201, the second valve assembly 206 is configured to control the cold storage device 203 to supply cold to the second heat exchanger 201, that is, not to store the cold of the first heat exchanger 101. When the coolant flowing out of the cold storage device 203 does not flow back to the first heat exchanger 101 through the second heat exchanger 201, the second valve assembly 206 is configured to control the cold storage device 203 to store the cold of the first heat exchanger 101.

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

[0171] It is understandable that the first valve assembly 205 can increase the independence and flexibility of the cold storage device 203 to a certain extent by controlling the cold storage device 203 to be connected to and removed from the coolant circuit, which is conducive to promoting the modularization of the air-conditioning system 1000, thereby helping to optimize energy distribution, thereby reducing the energy consumption of the air-conditioning system 1000 and improving the operating efficiency of the air-conditioning system 1000. At the same time, when the cold storage device 203 fails or requires maintenance, the air-conditioning system 1000 can maintain normal operation to a certain extent.

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

[0173] In the above embodiment, the third valve 207 and the fourth valve 208 can control the cold storage device 203 to be connected to and removed from the coolant circuit, which increases the independence and flexibility of the cold storage device 203 to a certain extent, and is conducive to promoting the modularization of the air-conditioning system 1000, thereby helping to optimize energy distribution, thereby reducing the energy consumption of the air-conditioning system 1000 and improving the operating efficiency of the air-conditioning system 1000. At the same time, when the cold storage device 203 fails or needs maintenance, it is conducive to the air-conditioning system 1000 to maintain normal operation to a certain extent.

[0174] Specifically, the third valve 207 and the fourth valve 208 are components for controlling the flow of the coolant by opening and closing the passage.

[0175] In one embodiment, the third valve 207 is closed and the fourth valve 208 is opened. The coolant flows from the outlet of the first heat exchanger 101 to the inlet of the second heat exchanger 201 through the fourth valve 208, 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 does not flow into the cold storage device 203. In one embodiment, the third valve 207 is opened and the fourth valve 208 is opened. The coolant flows from the outlet of the first heat exchanger 101 to the inlet of the cold storage device 203 and the inlet of the second heat exchanger 201 through the third valve 207 and the fourth valve 208 at the same time, 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. In one embodiment, the third valve 207 is opened and the fourth valve 208 is closed. The coolant flows from the outlet of the first heat exchanger 101 to the inlet of the cold storage device 203 through the third valve 207 , that is, the third valve 207 and the fourth valve 208 are configured to allow the coolant flowing out of the first heat exchanger 101 to flow into the cold storage device 203 .

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

[0177] In the above embodiment, 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, so that the cold storage device 203 can store the cold energy of the first heat exchanger 101 and supply cold energy to the second heat exchanger 201 by means of the cooperation among the cold storage device 203, the fifth valve 209 and the sixth valve 210, 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 for controlling the flow of the coolant by opening and closing the passage.

[0179] In one embodiment, the fifth valve 209 is closed and the sixth valve is opened. The coolant flows from the outlet of the cold storage device 203 to the inlet of the second heat exchanger 201 through the sixth valve 210, 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 so that the coolant flowing out of the cold storage device 203 flows back to the inlet of the first heat exchanger 101 through the second heat exchanger 201. In one embodiment, the fifth valve 209 is opened and the sixth valve is closed. The coolant flows from the outlet of the cold storage device 203 to the inlet of the first heat exchanger 101 through the fifth valve 209, that is, the fifth valve 209 and the sixth valve 210 are configured so that the coolant flowing out of the cold storage device 203 flows back to the inlet of the first heat exchanger 101 without passing through the second heat exchanger 201.

[0180] In some embodiments, please combine Figure 1 and Figure 2 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 so that one of the following cold sources provides cooling for the second heat exchanger 201: fluorine pump 103, compressor 104, fluorine pump 103 + compressor 104, cold storage device 203, fluorine pump 103 + cold storage device 203, compressor 104 + cold storage device 203, fluorine 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 so that one of the following cold sources provides cooling for the second heat exchanger 201: fluorine pump 103, compressor 104, fluorine pump 103 + compressor 104, and is configured to control the second switching component 204 so that the cold storage device 203 stores the cold of the first heat exchanger 101.

[0182] In the above embodiment, the air-conditioning system 1000 can control the first switching component 106 and the second switching component 204 so that different cold sources or combinations of cold sources provide cooling for the second heat exchanger 201, and control the second switching component 204 so that the cold storage device 203 stores the cold energy of the first heat exchanger 101, thereby realizing flexible switching of multiple operating modes and efficient operation, and improving the operating efficiency and reliable stability of the air-conditioning system 1000 to a certain extent.

[0183] Specifically, in the cooling mode, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 so that at least one of the following cold sources provides cooling for the second heat exchanger 201: a natural cold source, a mechanical cold source, and a cold storage cold source. Among them, the fluorine 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 cold of the first heat exchanger 101 and to supply cold 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 cold of the first heat exchanger 101.

[0185] Optionally, for convenience of describing 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+cooling 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 enable the fluorine pump 103 to provide cooling for 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 make the fluorine pump 103 supply cold to the second heat exchanger 201, and the second switching component 204 is controlled to make the cold storage device 203 store the cold of the first heat exchanger 101, that is, the first valve 107 is controlled to be closed, the second valve 108 is controlled to be opened, the third valve 207 is controlled to be opened, the fourth valve 208 is controlled to be opened, the fifth valve 209 is controlled to be opened, and the sixth valve 210 is controlled to be closed.

[0188] In mode 3, the first switching component 106 and the second switching component 204 are controlled to enable the fluorine pump 103 + compressor 104 to provide cooling for the second heat exchanger 201, and the compressor 104 operates at the first power, that is, the first valve 107 is closed, 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.

[0189] In mode 4, the first switching component 106 and the second switching component 204 are controlled to make the fluorine 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 cooling capacity 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 opened, the fourth valve 208 is opened, the fifth valve 209 is opened, and the sixth valve 210 is closed.

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

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

[0192] In mode 7, the first switching assembly 106 and the second switching assembly 204 are controlled to make the cold storage device 203 provide cooling for the second heat exchanger 201, that is, 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. The compressor 104 and the fluorine pump 103 are stopped.

[0193] In mode 8, the first switching component 106 and the second switching component 204 are controlled to enable the fluorine pump 103 + the cold storage device 203 to provide cooling for 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 enable the fluorine pump 103 + compressor 104 + cold storage device 203 to provide cooling for 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 enable the compressor 104 + the cold storage device 203 to provide cooling for 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 the compressor 104 can be controlled by adjusting the speed of the compressor 104. The first power is less than the second power. When the air-conditioning system 1000 is in mode 3, the natural cold source and the mechanical cold source can be used to cool the second heat exchanger 201, and the speed of the compressor 104 is relatively slow. When the air-conditioning system 1000 is in mode 3, the mechanical cold source can be used to cool the second heat exchanger 201, and the speed of the compressor 104 is relatively fast. It can be understood that the speed of the compressor 104 is proportional to the amount of cooling of the mechanical cold source. The speed of the compressor 104 is proportional to the energy consumption of the air-conditioning system 1000.

[0197] In some embodiments, please combine Figure 1 and Figure 2 , 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 enable the cold storage device 203 to provide cold 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 so that one of the following cold sources provides cooling for the second heat exchanger 201: fluorine pump 103, compressor 104, fluorine pump 103+compressor 104, fluorine pump 103+cold storage device 203, compressor 104+cold storage device 203, fluorine pump 103+compressor 104+cold storage device 203, and is configured to control the second switching component 204 so that the cold storage device 203 stores the cold of the first heat exchanger 101.

[0199] In the above embodiment, 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 enable the cold storage device 203 to provide cooling for the second heat exchanger 201, which is conducive to achieving uninterrupted cooling requirements for the load.

[0200] Specifically, when the air conditioning system 1000 is powered off, the cold storage cold source can serve as an emergency cold source. At this time, the air conditioning refrigeration system 100 stops running, and the air conditioning system 1000 is controlled to operate in mode 7. During the operation of the 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 understandable 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 a long time.

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

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

[0203] In some embodiments, please combine Figure 1 and Figure 2 , in the case of T0-T1>T', the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to enable the fluorine pump 103 to provide cooling for the second heat exchanger 201;

[0204] In the case of 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 enable the fluorine pump 103+compressor 104 to provide cooling for the second heat exchanger 201, and the compressor 104 operates at the first power;

[0205] In the case of T0-T1≤T", the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to enable the compressor 104 to provide cooling for the second heat exchanger 201, and the compressor 104 operates at the second power;

[0206] Wherein, 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', and the first power is less than the second power.

[0207] In the above embodiment, the air-conditioning system 1000 operates 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. The mechanical cold source is effectively and dynamically adjusted according to the profit and loss of the natural cold source to ensure the cooling effect, thereby optimizing the use and energy efficiency adjustment of the cold source, and to a certain extent, meeting the cooling demand 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; when T0-T1≤T", the air conditioning system 1000 operates in mode 5.

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

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

[0211] When the difference between the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the ambient temperature T1 is small, that is, when the cooling capacity of the natural cooling source is insufficient, operation mode 5 can enable the mechanical cooling source to completely replace the natural cooling source to cool the load, thereby ensuring a good cooling effect at a higher ambient temperature to a certain extent.

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

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

[0214] The second set value T" can be set according to factors such as the environment, cooling requirements and performance of the air conditioning system 1000. Exemplarily, the second set value T" = 5°C.

[0215] In some embodiments, please combine Figure 1 and Figure 2 After the fluorine pump 103 provides cooling for 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 to allow the fluorine pump 103 to provide cooling for the second heat exchanger 201 ;

[0216] After the fluorine pump 103 provides cooling for 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 allow the fluorine pump 103+the cold storage device 203 to provide cooling for the second heat exchanger 201 for a first preset time period;

[0217] After the fluorine pump 103 provides cooling to the second heat exchanger 201, if T0≤Tb, the cooling + cold storage mode is entered;

[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 enable the fluorine pump 103 to provide cold to the second heat exchanger 201, and control the second switching component 204 to enable the cold storage device 203 to store the cold of the first heat exchanger 101;

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

[0220] In the above embodiment, 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. The cold storage cold source is effectively and dynamically adjusted according to the cooling demand of the air-conditioning system 1000 to ensure the cooling effect, thereby optimizing the use and energy efficiency adjustment of the cold source, and meeting the cooling demand of the load to a certain extent while reducing the energy consumption of the air-conditioning system 1000.

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

[0222] It can be understood 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 operate to utilize the natural cold source to cool the load, 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 operation mode 8 can make full use of the natural cold source while further utilizing the cold storage cold source to cool the load, which is beneficial to meet the cooling demand of the load while 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, operation mode 2 can make full use of the natural cold source to cool the load, while using the surplus cold of the natural cold source to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cold 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 proportional to the size of T0.

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

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

[0228] The first preset time length can be set according to factors such as environment, cooling demand and performance of the air conditioning system 1000. Exemplarily, the first preset time length is 5 minutes (min).

[0229] In some embodiments, please combine Figure 1 and Figure 2 , after the fluorine pump 103 supplies cold to the second heat exchanger 201 and the second switching component 204 is controlled to make the cold storage device 203 store the cold 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 to make the fluorine pump 103 supply cold to the second heat exchanger 201, and control the second switching component 204 to continue to make the cold storage device 203 store the cold of the first heat exchanger 101;

[0230] After the fluorine pump 103 provides cooling for the second heat exchanger 201 and the second switching component 204 is controlled to allow the cold storage device 203 to store the cold 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 allow the fluorine pump 103+the cold storage device 203 to provide cooling for the second heat exchanger 201 for a first preset period of time.

[0231] In the above embodiment, 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. The cold storage cold source is further dynamically adjusted to ensure the cooling effect according to the profit and loss of the natural cold source, thereby optimizing the use and energy efficiency adjustment of the cold source, and meeting the cooling demand of the load to a certain extent while reducing the energy consumption of the air-conditioning system 1000.

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

[0233] It can be understood 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 the natural cold source still has surplus cooling capacity, mode 2 continues to operate to fully utilize the natural cold source to cool the load, while utilizing the surplus cooling capacity of the natural 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 as a backup, thereby further fully utilizing 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 operation mode 8 can make full use of the natural cold source while further utilizing the cold storage cold source to cool the load, which is beneficial to meet the cooling demand of the load while reducing the energy consumption of the air-conditioning system 1000 to a certain extent.

[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, switches from mode 2 of cooling + cold storage mode to mode 8 of cooling mode. At this time, the fluorine 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, and then configured to supply cold to the second heat exchanger 201.

[0236] It is understandable that in Figure 2 In the embodiment, when the air conditioning system 1000 is in mode 2: when T0>Ta, the air conditioning system 1000 is first switched to mode 1, that is, the fluorine pump 103 of the air conditioning refrigeration system 100 remains unchanged, and the cold storage and heat exchange system 200 is first configured to stop storing cold, and because T0>Ta is still satisfied at this time, the air conditioning system 1000 is switched from mode 1 to mode 8, that is, the cold storage and heat exchange system 200 is configured to supply cold to the second heat exchanger 201. In some embodiments, please combine Figure 1 and Figure 2 After the fluorine pump 103 + the cold storage device 203 provide cooling for the second heat exchanger 201 for the 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 to allow the fluorine pump 103 + the cold storage device 203 to provide cooling for the second heat exchanger 201 for the first preset time;

[0237] After the fluorine pump 103 + cold storage device 203 provides cooling for the second heat exchanger 201 for the first preset period of 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 enable the fluorine pump 103 + compressor 104 to provide cooling for the second heat exchanger 201, and the compressor 104 operates at the first power.

[0238] In the above embodiment, 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. The mechanical cold source is effectively and dynamically adjusted according to the cooling capacity to ensure the cooling effect, thereby optimizing the use and energy efficiency adjustment of the cold source, and meeting the cooling demand of the load to a certain extent while reducing the energy consumption of the air-conditioning system 1000.

[0239] Specifically, after the air-conditioning system 1000 operates in mode 8 for the first preset time period: when T0≤Ta, the air-conditioning system 1000 continues to operate in mode 8 for the first preset time period; when T0>Ta, the air-conditioning system 1000 operates in mode 3.

[0240] It can be understood that after the air-conditioning system 1000 runs in mode 8 for the first preset period of time: 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 operation mode 8 continues to be operated to utilize the natural cold source and the cold storage cold source to jointly cool 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, operation mode 3 intervenes with an appropriate amount of mechanical cold source on the basis of the natural cold source to jointly cool the load, thereby ensuring that the cooling demand of the load is met to a certain extent.

[0242] In some embodiments, please combine Figure 1 and Figure 2 , after the fluorine pump 103 + compressor 104 provides cooling for 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 to allow the fluorine pump 103 + compressor 104 to provide cooling for the second heat exchanger 201 and the compressor 104 operates at the first power;

[0243] After the fluorine pump 103 + compressor 104 provides cooling for 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 allow the fluorine pump 103 + compressor 104 + cold storage device 203 to provide cooling for the second heat exchanger 201 for a second preset time period;

[0244] After the fluorine pump 103 provides cooling for 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 cooling+cooling storage mode is entered;

[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 enable the fluorine pump 103 + the compressor 104 to provide cold for the second heat exchanger 201, and control the second switching component 204 to enable the cold storage device 203 to store the cold of the first heat exchanger 101;

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

[0247] In the above embodiment, 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. The cold storage cold source is effectively adjusted dynamically according to the level and time of the cooling demand of the air-conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use and energy efficiency adjustment of the cold source, meeting the cooling demand of the load to a certain extent, while reducing the energy consumption of the air-conditioning system 1000.

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

[0249] It can be understood 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 operate to utilize natural cold sources and mechanical energy to cool 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 operation mode 9 can make full use of natural cold sources and mechanical cold sources, while further utilizing the cold storage cold source to cool the load, which is beneficial to meet the cooling demand of the load while 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, operation mode 4 can meet the time requirement, and make full use of the natural cold source and the mechanical cold source to cool the load, while using the surplus cold of the natural cold source and the mechanical cold source to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cold of the natural cold source and the mechanical cold source as a backup, further making full use of the natural cold source and the 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 proportional to the size of T0.

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

[0254] The first set time t1 and the second set time t2 can be set according to factors such as peak and valley electricity prices, environment, etc. In one embodiment, the first set time t1 = 5:00 (ie 5 am), and the second set time t2 = 22:00 (ie 10 pm).

[0255] The second preset time length can be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. Exemplarily, the second preset time length is 5 minutes (min).

[0256] In some embodiments, please combine Figure 1 and Figure 2 , after the fluorine pump 103 + compressor 104 supplies cold to the second heat exchanger 201, and the second switching component 204 is controlled to make the cold storage device 203 store the cold 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 to make the fluorine pump 103 + compressor 104 supply cold to the second heat exchanger 201, and control the second switching component 204 to continue to make the cold storage device 203 store the cold of the first heat exchanger 101;

[0257] After the fluorine pump 103 + compressor 104 provides cooling for the second heat exchanger 201, and the second switching component 204 is controlled to allow the cold storage device 203 to store the cold 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 allow the fluorine pump 103 + compressor 104 + cold storage device 203 to provide cooling for the second heat exchanger 201 for a second preset period of time.

[0258] In the above embodiment, 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. The cold storage cold source is further dynamically adjusted to ensure the cooling effect according to the profit and loss of the natural cold source and the mechanical cold source, thereby optimizing the use and energy efficiency of the cold source, meeting the cooling demand of the load to a certain extent, and reducing the energy consumption of the air-conditioning system 1000.

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

[0260] It can be understood 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 the natural cold source and the mechanical cold source still have surplus cooling capacity, mode 4 continues to operate to fully utilize the natural cold source and the mechanical cold source to supply cooling to the load, while utilizing the surplus cooling capacity of the natural cold source and the mechanical cold source to supply cooling to 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, further fully utilizing 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 operation mode 9 can make full use of the natural cold source and the mechanical cold source, while further utilizing the cold storage cold source to cool the load, which is beneficial to meet the cooling demand of the load while reducing the energy consumption of the air-conditioning system 1000 to a certain extent.

[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, switches from mode 4 of cooling + cold storage mode to mode 9 of cooling mode. At this time, the fluorine 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, and then configured to supply cold to the second heat exchanger 201.

[0263] It is understandable that in Figure 2 , when the air-conditioning system 1000 is in mode 4: when T0>Ta, the air-conditioning system 1000 first switches to mode 3, that is, the fluorine pump 103 of the air-conditioning refrigeration system 100 remains unchanged, and the cold storage and heat exchange system 200 is first configured to stop storing cold energy, and because 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 and heat exchange system 200 is configured to supply cold to the second heat exchanger 201.

[0264] In some embodiments, please combine Figure 1 and Figure 2 , after the fluorine pump 103+compressor 104+cooling storage device 203 provides cooling for 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 allow the fluorine pump 103+compressor 104+cooling storage device 203 to provide cooling for the second heat exchanger 201 for a second preset time;

[0265] After the fluorine pump 103 + compressor 104 + cold storage device 203 provides cooling for the second heat exchanger 201 for a second preset period of 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 enable the compressor 104 to provide cooling for the second heat exchanger 201, and the compressor 104 operates at a second power.

[0266] In the above embodiment, 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. The mechanical cold source is effectively and dynamically adjusted according to the cooling capacity to ensure the cooling effect, thereby optimizing the use and energy efficiency adjustment of the cold source, and to a certain extent, while meeting the cooling demand of the load, reducing the energy consumption of the air-conditioning system 1000.

[0267] Specifically, after the air-conditioning system 1000 operates in mode 9 for the second preset time period: when T0≤Ta, the air-conditioning system 1000 continues to operate in mode 9 for the second preset time period; when T0>Ta, the air-conditioning system 1000 operates in mode 5.

[0268] It can be understood that after the air-conditioning system 1000 runs in mode 9 for the second preset time period: 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 an appropriate amount of mechanical cold source and cold storage cold source can meet the cooling demand of the air-conditioning system 1000, the operation mode 9 continues for the second preset time period to utilize the mechanical cold source and the cold storage cold source to jointly cool 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 sources and cold storage cold sources cannot meet the cooling demand of the air-conditioning system 1000, operation mode 5 introduces more mechanical cold sources to completely replace the natural cold sources to cool the load, thereby ensuring that the cooling demand of the load is met to a certain extent.

[0270] In some embodiments, please combine Figure 1 and Figure 2 , after the compressor 104 provides cooling for 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 allow the compressor 104 to provide cooling for the second heat exchanger 201 and the compressor 104 to operate at the second power;

[0271] After the compressor 104 provides cooling for 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 allow the compressor 104+the cold storage device 203 to provide cooling for the second heat exchanger 201 for a third preset time, and the compressor 104 operates at the third power;

[0272] After the compressor 104 is used to provide cooling for the second heat exchanger 201 and the compressor 104 is operated at the second power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+cooling storage mode is entered;

[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 so that the compressor 104 supplies cold to the second heat exchanger 201 , and control the second switching component 204 so that the cold storage device 203 stores the cold of the first heat exchanger 101 .

[0274] In the above embodiment, 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. The cold storage cold source is effectively adjusted dynamically according to the level and time of the cooling demand of the air-conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use and energy efficiency adjustment of the cold source, meeting the cooling demand of the load to a certain extent, while reducing the energy consumption of the air-conditioning system 1000.

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

[0276] It can be understood 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 operate to utilize the mechanical cold source to cool the load, 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 operation mode 10 can make full use of the mechanical cold source while further utilizing the cold storage cold source to cool the load, which is beneficial to meet the cooling demand of the load while 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, operation mode 6 can meet the time requirement, and while making full use of the mechanical cold source to cool the load, use 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 proportional to the size of T0.

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

[0282] The first set time t1 and the second set time t2 can be set according to factors such as peak and valley electricity prices, environment, etc. In one embodiment, the first set time t1 = 5:00 (ie 5 am), and the second set time t2 = 22:00 (ie 10 pm).

[0283] The third preset time length can be set according to factors such as environment, cooling demand and performance of the air conditioning system 1000. Exemplarily, the third preset time length is 5 minutes (min).

[0284] In some embodiments, please combine Figure 1 and Figure 2 , after the compressor 104 is made to provide cooling for the second heat exchanger 201, and the second switching component 204 is controlled to make the cold storage device 203 store the cold 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 to make the compressor 104 provide cooling for the second heat exchanger 201, and control the second switching component 204 to make the cold storage device 203 store the cold of the first heat exchanger 101;

[0285] After the compressor 104 provides cooling for the second heat exchanger 201 and the second switching component 204 is controlled to allow the cold storage device 203 to store the cold 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 allow the compressor 104+the cold storage device 203 to provide cooling for the second heat exchanger 201 for a third preset period of time, and the compressor 104 operates at a third power.

[0286] In the above embodiment, 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. The cold storage cold source is further dynamically adjusted to ensure the cooling effect according to the profit and loss of the mechanical cold source, thereby optimizing the use and energy efficiency regulation of the cold source, and meeting the cooling demand of the load to a certain extent while reducing the energy consumption of the air-conditioning system 1000.

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

[0288] It can be understood 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 the mechanical cold source still has surplus cooling capacity, mode 6 continues to operate to fully utilize the mechanical cold source to supply cooling to the load, while utilizing the surplus cooling capacity of the mechanical cold source to supply cooling to 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 further fully utilizing 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 operation mode 10 can make full use of the mechanical cold source while further utilizing the cold storage cold source to supply cooling to the load, which is beneficial to meet the cooling demand of the load while reducing the energy consumption of the air-conditioning system 1000 to a certain extent.

[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, switches from mode 6 of cooling + cold storage mode to mode 10 of cooling mode. At this time, the fluorine 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, and then configured to supply cold to the second heat exchanger 201.

[0291] It is understandable that in Figure 2 , when the air-conditioning system 1000 is in mode 6: when T0>Ta, the air-conditioning system 1000 first switches to mode 5, that is, the fluorine pump 103 of the air-conditioning refrigeration system 100 remains unchanged, and the cold storage and heat exchange system 200 is first configured to stop storing cold energy, and because 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 configured to supply cold to the second heat exchanger 201.

[0292] In some embodiments, please combine Figure 1 and Figure 2 , after the compressor 104 + the cold storage device 203 provide cooling for 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 allow the compressor 104 + the cold storage device 203 to provide cooling for the second heat exchanger 201 for a third preset time;

[0293] After the compressor 104 + the cold storage device 203 provide cooling for the second heat exchanger 201 for a third preset time period, 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 embodiment, 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. The mechanical cold source is effectively and dynamically adjusted according to the cooling capacity to ensure the cooling effect, thereby optimizing the use and energy efficiency adjustment of the cold source, and meeting the cooling demand of the load to a certain extent while reducing the energy consumption of the air-conditioning system 1000.

[0296] Specifically, after the air-conditioning system 1000 runs in mode 10 for the third preset time period: when T0≤Ta, the air-conditioning system 1000 continues to run in mode 10 for the third preset time period; when T0>Ta, the air-conditioning system 1000 is configured to control the compressor 104 to run at a greater fourth power until T0≤Ta.

[0297] It can be understood that the operation of the compressor 104 at a larger fourth power can increase the cooling capacity of the mechanical cooling source.

[0298] It can be understood that after the air-conditioning system 1000 operates in mode 10 for the third preset time period: 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 operation mode 10 continues for the third preset time period to utilize the mechanical cold source and the cold storage cold source to jointly cool 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 operate at a larger fourth power until T0≤Ta, so that more mechanical cold sources can be further added to cool the load, ensuring that the cooling demand of the load is met to a certain extent.

[0300] In some embodiments, please combine Figure 1 and Figure 2 , after controlling the compressor 104 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 allow the compressor 104 to provide cooling for 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, the cooling+cooling storage mode is entered;

[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 so that the compressor 104 supplies cold to the second heat exchanger 201 , and control the second switching component 204 so that the cold storage device 203 stores the cold of the first heat exchanger 101 .

[0303] In the above embodiment, 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 effectively and dynamically adjusted according to the level and time of the cooling demand of the air-conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use and energy efficiency adjustment of the cold source, and to a certain extent, while meeting the cooling demand of the load, reducing the energy consumption of the air-conditioning system 1000.

[0304] Specifically, after controlling the compressor 104 to operate at a larger fourth power to add more mechanical cold sources, the air-conditioning system 1000 operates in mode 5 when T0>Tb; and in mode 6 when T0≤Tb and t≤t1, or T0≤Tb and t≥t2.

[0305] It can be understood that after the air-conditioning system 1000 controls the compressor 104 to operate at a larger fourth power so as to add more mechanical cold sources: 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 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, operation mode 6 can meet the time requirement and make full use of the mechanical cold source to cool the load while using the surplus cold to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cold as a backup, thereby reducing the energy consumption of the air-conditioning system 1000.

[0307] See also Figures 2 to 12 , an embodiment of the present 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 a 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] According to 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 so that at least one of the natural cold source, the mechanical cold source and the cold storage cold source provides cooling for the second heat exchanger 201, and the air-conditioning refrigeration system 100 is controlled so that at least one of the natural cold source and the mechanical cold source provides cooling for the cold storage device 203, and the cold storage heat exchange system 200 is controlled so that the cold storage cold source provides cooling for the second heat exchanger 201.

[0310] In the above control method, the air-conditioning refrigeration system 100 and the cold storage heat exchange system 200 can utilize at least one of a natural cold source, a mechanical cold source and a cold storage cold source to provide cooling for the second heat exchanger 201, and utilize at least one of a natural cold source and a mechanical cold source to provide cooling for the cold storage device 203, thereby realizing flexible switching of multiple operating modes and efficient operation, 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 for adjusting temperature. The load is a facility for centrally storing, managing and processing a large amount of data, which generates a large amount of heat during operation, which may affect the normal operation of the load and even affect the environment and personnel safety. In order to effectively reduce the energy consumption of the air conditioning system 1000, the embodiment of the present invention provides a control method, which can ensure the normal operation of the load to a certain extent, and at the same time can reduce the energy consumption of the air conditioning system 1000 to a certain extent, thereby reducing the load PUE and reducing the long-term operating cost of the load.

[0312] The first heat exchanger 101 and the second heat exchanger 201 are devices for transferring heat (i.e., transferring cold) between different media. The first heat exchanger 101 can enable the air conditioning refrigeration system 100 to generate heat exchange with the cold storage heat exchange system 200. The second heat exchanger 201 can enable the cold storage heat exchange system 200 to generate heat exchange with the load.

[0313] The air conditioning system 1000 includes an air conditioning refrigeration system 100 and a cold storage and heat exchange system 200, and the air conditioning refrigeration system 100 and the cold storage and heat exchange system 200 are connected through a first heat exchanger 101 to achieve the transmission of cold. The air conditioning refrigeration system 100 can transfer the cold of the natural cold source and the mechanical cold source to the cold storage and heat exchange system 200. The cold storage and heat exchange system 200 can store the cold transmitted by the air conditioning refrigeration system 100, and further transmit it to the load. Among them, the natural cold source refers to the cold from the natural environment, that is, the low-temperature resources in nature are used for cooling. The mechanical cold source refers to the cold provided by mechanical equipment (such as a compressor 104), and the mechanical cold source requires energy to drive.

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

[0315] In some embodiments, please combine Figure 2 and Figure 3 , control methods include:

[0316] Step S01, when the current signal is normal, according to 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 so that at least one of the natural cold source, the mechanical cold source and the cold storage cold source provides cooling for the second heat exchanger 201, and the air conditioning refrigeration system 100 is controlled so that at least one of the natural cold source and the mechanical cold source provides cooling for the cold storage device 203;

[0317] Step S02, when the current signal is interrupted, controlling the cold storage heat exchange system 200 so that the cold storage cold source provides cooling for the second heat exchanger 201.

[0318] In the above embodiment, when the current signal is interrupted, the cold storage heat exchange system 200 is controlled so that the cold storage cold source provides cooling for the second heat exchanger 201, which is conducive to achieving the uninterrupted cooling demand of the load.

[0319] Specifically, when the current signal is interrupted, that is, when the air conditioning system 1000 is powered off, the cold storage cold source can play the role of an emergency cold source. At this time, the air conditioning refrigeration system 100 stops running, and the air conditioning system 1000 is controlled to operate in mode 7. During the operation mode 7 of the air conditioning system 1000, the water pump 202 can be powered by an emergency power supply, such as a UPS (Uninterruptible Power Supply). It is understandable 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 a long time.

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

[0321] It should be noted that in Figure 2 When the current signal e=1, it indicates that the current signal is interrupted, that is, 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, that is, the air conditioning system 1000 is in a power-on state.

[0322] In some embodiments, please combine Figures 2 to 13 , step S01 comprises:

[0323] Step S1, when T0-T1>T', control the air conditioning refrigeration system 100 so that the natural cold source provides cooling for the second heat exchanger 201;

[0324] Step S2, when T″<T0-T1≤T′, control the air conditioning refrigeration system 100 so that the natural cold source and the mechanical cold source provide cooling for the second heat exchanger 201, and the mechanical cold source operates at the first power;

[0325] Step S3, when T0-T1≤T", the air conditioning refrigeration system 100 is controlled to make the mechanical cold source provide cooling for the second heat exchanger 201, and the mechanical cold source operates at the second power;

[0326] Wherein, 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', and the first power is less than the second power.

[0327] In the above embodiment, the air-conditioning system 1000 operates 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. The mechanical cold source is effectively and dynamically adjusted according to the profit and loss of the natural cold source to ensure the cooling effect, thereby optimizing the use and energy efficiency adjustment of the cold source, and to a certain extent, meeting the cooling demand 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 can be understood that when the air-conditioning system 1000 is in the power-on state: when the difference between the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the ambient temperature T1 is large, that is, when the cooling capacity of the natural cold source is sufficient, operation mode 1 can make full use of the natural cold source to cool the load, thereby reducing the energy consumption of the air-conditioning system 1000 to a certain extent.

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

[0331] When the difference between the temperature T0 of the coolant at the inlet of the second heat exchanger 201 and the ambient temperature T1 is small, that is, when the cooling capacity of the natural cooling source is insufficient, operation mode 5 can enable the mechanical cooling source to completely replace the natural cooling source to cool the load, thereby ensuring a good cooling effect at a higher ambient temperature to a certain extent.

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

[0333] The first setting value T' can be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. Figure 2 The first set value T'=10°C.

[0334] The second setting value T" can be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. For example, Figure 2 The second set value T" = 5°C.

[0335] In some embodiments, please combine Figure 4 , control methods include:

[0336] After step S1:

[0337] Step S11, if Tb<T0≤Ta, control the air conditioning refrigeration system 100 to continue to use the natural cold source to provide cooling for the second heat exchanger 201;

[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 for the second heat exchanger 201 for a first preset time period;

[0339] Step S13, if T0≤Tb, enter cooling + cold storage mode;

[0340] In the cooling + cold storage mode, the air conditioning refrigeration system 100 is controlled so that the natural cold source provides cooling for the second heat exchanger 201, and the air conditioning system 1000 is controlled so that the natural cold source provides cooling for the cold storage device 203;

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

[0342] In the above embodiment, 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. The cold storage cold source is effectively and dynamically adjusted according to the cooling demand of the air-conditioning system 1000 to ensure the cooling effect, thereby optimizing the use and energy efficiency adjustment of the cold source, and meeting the cooling demand of the load to a certain extent 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 can be understood 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 operate to utilize the natural cold source to cool the load, 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 operation mode 8 can make full use of the natural cold source while further utilizing the cold storage cold source to cool the load, which is beneficial to meet the cooling demand of the load while 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, operation mode 2 can make full use of the natural cold source to cool the load, while using the surplus cold of the natural cold source to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cold 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 proportional to the size of T0.

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

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

[0350] The first preset time length can be set according to factors such as environment, cooling demand and performance of the air conditioning system 1000. Exemplarily, the first preset time length is 5 minutes (min).

[0351] In some embodiments, please combine Figure 5 , control methods include:

[0352] After step S13:

[0353] Step S131, if T0≤Ta, control the air conditioning and refrigeration system 100 to continue to use the natural cold source to provide cooling for the second heat exchanger 201, and control the air conditioning system 1000 to continue to use the natural cold source to provide cooling for the cold storage device 203;

[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 for the second heat exchanger 201 for a first preset time period.

[0355] In the above embodiment, 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. The cold storage cold source is further dynamically adjusted to ensure the cooling effect according to the profit and loss of the natural cold source, thereby optimizing the use and energy efficiency adjustment of the cold source, and meeting the cooling demand of the load to a certain extent while reducing the energy consumption of the air-conditioning system 1000.

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

[0357] It can be understood 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 the natural cold source still has surplus cooling capacity, mode 2 continues to operate to fully utilize the natural cold source to cool the load, while utilizing the surplus cooling capacity of the natural 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 as a backup, thereby further fully utilizing 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 operation mode 8 can make full use of the natural cold source while further utilizing the cold storage cold source to cool the load, which is beneficial to meet the cooling demand of the load while reducing the energy consumption of the air-conditioning system 1000 to a certain extent.

[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, switches from mode 2 of cooling + cold storage mode to mode 8 of cooling mode. At this time, the fluorine 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, and then the cold storage device 200 is controlled to supply cold to the second heat exchanger 201.

[0360] It is understandable that in Figure 2 When the air-conditioning system 1000 is in mode 2: when T0>Ta, the air-conditioning system 1000 first switches to mode 1, that is, the fluorine pump 103 of the air-conditioning refrigeration system 100 remains unchanged, and the cold storage and heat exchange system 200 is first controlled to stop storing cold energy, and because 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 and heat exchange system 200 is controlled to supply cold to the second heat exchanger 201.

[0361] In some embodiments, please combine Figure 6 , control methods include:

[0362] After step S12 and step 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 use the natural cold source and the cold storage cold source to provide cooling for the second heat exchanger 201 for a first preset time period;

[0364] Step S122: if T0>Ta, the air conditioning and refrigeration system 100 is controlled to enable the natural cold source and the mechanical cold source to provide cooling for the second heat exchanger 201, and the mechanical cold source operates at the first power.

[0365] In the above embodiment, 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. The mechanical cold source is effectively and dynamically adjusted according to the cooling capacity to ensure the cooling effect, thereby optimizing the use and energy efficiency adjustment of the cold source, and meeting the cooling demand of the load to a certain extent while reducing the energy consumption of the air-conditioning system 1000.

[0366] Specifically, after the air-conditioning system 1000 runs in mode 8 for the first preset time period: when T0≤Ta, the air-conditioning system 1000 is controlled to continue running in mode 8 for the first preset time period; when T0>Ta, the air-conditioning system 1000 is controlled to run in mode 3.

[0367] It can be understood that after the air-conditioning system 1000 runs in mode 8 for the first preset period of time: 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 operation mode 8 continues to be operated to utilize the natural cold source and the cold storage cold source to jointly cool 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, operation mode 3 intervenes with an appropriate amount of mechanical cold source on the basis of the natural cold source to jointly cool the load, thereby ensuring that the cooling demand of the load is met to a certain extent.

[0369] In some embodiments, please combine Figure 7 , control methods include:

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

[0371] Step S21, if Tb<T0≤Ta, control the air conditioning refrigeration system 100 to continue to use the natural cold source and the mechanical cold source to provide cooling for the second heat exchanger 201, 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 so that the natural cold source, the mechanical cold source and the cold storage cold source provide cooling for the second heat exchanger 201 for a second preset time period;

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

[0374] In the cooling + cold storage mode, the air conditioning refrigeration system 100 is controlled so that the natural cold source and the mechanical cold source provide cooling for the second heat exchanger 201, and the air conditioning system 1000 is controlled so that the natural cold source and the mechanical cold source provide cooling for the cold storage device 203;

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

[0376] In the above embodiment, 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. The cold storage cold source is effectively adjusted dynamically according to the level and time of the cooling demand of the air-conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use and energy efficiency adjustment of the cold source, meeting the cooling demand of the load to a certain extent, while reducing the energy consumption of the air-conditioning system 1000.

[0377] Specifically, when the air-conditioning system 1000 is in mode 3: when Tb<T0≤Ta, the air-conditioning system 1000 is controlled to continue operating in mode 3; when T0>Ta, the air-conditioning system 1000 is controlled to operate in mode 9 for the second preset duration; when 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 can be understood 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 operate to utilize natural cold sources and mechanical energy to cool 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 operation mode 9 can make full use of natural cold sources and mechanical cold sources, while further utilizing the cold storage cold source to cool the load, which is beneficial to meet the cooling demand of the load while 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 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, operation mode 4 can meet the time requirement, and make full use of the natural cold source and the mechanical cold source to cool the load, while using the surplus cold of the natural cold source and the mechanical cold source to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cold of the natural cold source and the mechanical cold source as a backup, further making full use of the natural cold source and the 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 proportional to the size of T0.

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

[0383] The first set time t1 and the second set time t2 can be set according to factors such as peak and valley electricity prices, environment, etc. In one embodiment, the first set time t1 = 5:00 (ie 5 am), and the second set time t2 = 22:00 (ie 10 pm).

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

[0385] In some embodiments, please combine Figure 8 , control methods include:

[0386] After step S23:

[0387] Step S231, if T0≤Ta, control the air conditioning and refrigeration system 100 to continue to use the natural cold source and the mechanical cold source to provide cooling for the second heat exchanger 201, and control the air conditioning system 1000 to continue to use the natural cold source and the mechanical cold source to provide cooling for the cold storage device 203;

[0388] Step S232, if T0>Ta, control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 so that the natural cold source, the mechanical cold source and the cold storage cold source provide cooling for the second heat exchanger 201 for a second preset time period.

[0389] In the above embodiment, 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. The cold storage cold source is further dynamically adjusted to ensure the cooling effect according to the profit and loss of the natural cold source and the mechanical cold source, thereby optimizing the use and energy efficiency of the cold source, meeting the cooling demand of the load to a certain extent, and reducing the energy consumption of the air-conditioning system 1000.

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

[0391] It can be understood 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 the natural cold source and the mechanical cold source still have surplus cooling capacity, mode 4 continues to operate to fully utilize the natural cold source and the mechanical cold source to supply cooling to the load, while utilizing the surplus cooling capacity of the natural cold source and the mechanical cold source to supply cooling to 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, further fully utilizing 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 operation mode 9 can make full use of the natural cold source and the mechanical cold source, while further utilizing the cold storage cold source to cool the load, which is beneficial to meet the cooling demand of the load while reducing the energy consumption of the air-conditioning system 1000 to a certain extent.

[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, switches from mode 4 of cooling + cold storage mode to mode 9 of cooling mode. At this time, the fluorine 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, and then the cold storage device 200 is controlled to supply cold to the second heat exchanger 201.

[0394] It is understandable that in Figure 2 When the air-conditioning system 1000 is in mode 4: when T0>Ta, the air-conditioning system 1000 first switches to mode 3, that is, the fluorine pump 103 of the air-conditioning refrigeration system 100 remains unchanged, and the cold storage and heat exchange system 200 is first controlled to stop storing cold energy, and because 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 and heat exchange system 200 is controlled to supply cold to the second heat exchanger 201.

[0395] In some embodiments, please combine Fig. 9 , control methods include:

[0396] After step S22 and step 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 use the natural cold source, the mechanical cold source and the cold storage cold source to provide cooling for the second heat exchanger 201 for a second preset time period;

[0398] Step S222: if T0>Ta, the air conditioning and refrigeration system 100 is controlled to enable the mechanical cold source to provide cooling for the second heat exchanger 201, and the mechanical cold source operates at the second power.

[0399] In the above embodiment, 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. The mechanical cold source is effectively and dynamically adjusted according to the cooling capacity to ensure the cooling effect, thereby optimizing the use and energy efficiency adjustment of the cold source, and meeting the cooling demand of the load to a certain extent while reducing the energy consumption of the air-conditioning system 1000.

[0400] Specifically, after the air-conditioning system 1000 runs in mode 9 for the second preset time period: when T0≤Ta, the air-conditioning system 1000 is controlled to continue running in mode 9 for the second preset time period; when T0>Ta, the air-conditioning system 1000 is controlled to run in mode 5.

[0401] It can be understood that after the air-conditioning system 1000 runs in mode 9 for the second preset time period: 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 an appropriate amount of mechanical cold source and cold storage cold source can meet the cooling demand of the air-conditioning system 1000, the operation mode 9 continues for the second preset time period to utilize the mechanical cold source and the cold storage cold source to jointly cool 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 sources and cold storage cold sources cannot meet the cooling demand of the air-conditioning system 1000, operation mode 5 introduces more mechanical cold sources to completely replace the natural cold sources to cool the load, thereby ensuring that the cooling demand of the load is met to a certain extent.

[0403] In some embodiments, please combine Fig.10 , control methods include:

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

[0405] Step S31, if Tb<T0≤Ta, control the air conditioning refrigeration system 100 to continue to use the mechanical cold source to provide cooling for the second heat exchanger 201, 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 for the second heat exchanger 201 for a third preset time, and the mechanical cold source operates at a third power;

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

[0408] In the cooling+cooling storage mode, the air conditioning refrigeration system 100 is controlled so that the mechanical cold source provides cooling for the second heat exchanger 201 , and the air conditioning system 1000 is controlled so that the mechanical cold source provides cooling for the cool storage device 203 .

[0409] In the above embodiment, 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. The cold storage cold source is effectively adjusted dynamically according to the level and time of the cooling demand of the air-conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use and energy efficiency adjustment of the cold source, meeting the cooling demand of the load to a certain extent, while reducing the energy consumption of the air-conditioning system 1000.

[0410] Specifically, when the air-conditioning system 1000 is in mode 5: when Tb<T0≤Ta, the air-conditioning system 1000 is controlled to continue operating in mode 5; when T0>Ta, the air-conditioning system 1000 is controlled to operate in mode 10 for the third preset duration; when 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 can be understood 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 operate to utilize the mechanical cold source to cool the load, 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 operation mode 10 can make full use of the mechanical cold source while further utilizing the cold storage cold source to cool the load, which is beneficial to meet the cooling demand of the load while 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 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, operation mode 6 can meet the time requirement, and while making full use of the mechanical cold source to cool the load, use 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 proportional to the size of T0.

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

[0417] The first set time t1 and the second set time t2 can be set according to factors such as peak and valley electricity prices, environment, etc. In one embodiment, the first set time t1 = 5:00 (ie 5 am), and the second set time t2 = 22:00 (ie 10 pm).

[0418] The third preset time length can be set according to factors such as environment, cooling demand and performance of the air conditioning system 1000. Exemplarily, the third preset time length is 5 minutes (min).

[0419] In some embodiments, please combine Fig.11 , control methods include:

[0420] After step S33:

[0421] Step S331, if T0≤Ta, control the air conditioning and refrigeration system 100 to continue to use the mechanical cold source to provide cooling for the second heat exchanger 201, and control the air conditioning system 1000 to continue to use the mechanical cold source to provide cooling for the cold storage device 203;

[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 for the second heat exchanger 201 for a third preset time, and the mechanical cold source operates at a third power.

[0423] In the above embodiment, 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. The cold storage cold source is further dynamically adjusted to ensure the cooling effect according to the profit and loss of the mechanical cold source, thereby optimizing the use and energy efficiency regulation of the cold source, and meeting the cooling demand of the load to a certain extent while reducing the energy consumption of the air-conditioning system 1000.

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

[0425] It can be understood 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 the mechanical cold source still has surplus cooling capacity, mode 6 continues to operate to fully utilize the mechanical cold source to supply cooling to the load, while utilizing the surplus cooling capacity of the mechanical cold source to supply cooling to 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 further fully utilizing 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 operation mode 10 can make full use of the mechanical cold source while further utilizing the cold storage cold source to supply cooling to the load, which is beneficial to meet the cooling demand of the load while reducing the energy consumption of the air-conditioning system 1000 to a certain extent.

[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, switches from mode 6 of cooling + cold storage mode to mode 10 of cooling mode. At this time, the fluorine 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, and then the cold storage device 200 is controlled to supply cold to the second heat exchanger 201.

[0428] It is understandable that in Figure 2 When the air-conditioning system 1000 is in mode 6: when T0>Ta, the air-conditioning system 1000 first switches to mode 5, that is, the fluorine pump 103 of the air-conditioning refrigeration system 100 remains unchanged, and the cold storage and heat exchange system 200 is first controlled to stop storing cold energy, and because 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 controlled to supply cold to the second heat exchanger 201.

[0429] In some embodiments, please combine Fig.12 , control methods include:

[0430] After step S32 and step 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 use the cold storage cold source and the mechanical cold source to provide cooling for the second heat exchanger 201 for a third preset time, and the mechanical cold source operates at a third power;

[0432] Step S322, if T0>Ta, control the air conditioning refrigeration system 100 to make the mechanical cold source provide cooling for the second heat exchanger 201 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 embodiment, 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. The mechanical cold source is effectively and dynamically adjusted according to the cooling capacity to ensure the cooling effect, thereby optimizing the use and energy efficiency adjustment of the cold source, and meeting the cooling demand of the load to a certain extent while reducing the energy consumption of the air-conditioning system 1000.

[0435] Specifically, after the air-conditioning system 1000 runs in mode 10 for the third preset time period: when T0≤Ta, the air-conditioning system 1000 is controlled to continue running in mode 10 for the third preset time period; when T0>Ta, the air-conditioning system 1000 is configured to control the compressor 104 to run at a greater fourth power until T0≤Ta.

[0436] It can be understood that the operation of the compressor 104 at a larger fourth power can increase the cooling capacity of the mechanical cooling source.

[0437] It can be understood that after the air-conditioning system 1000 operates in mode 10 for the third preset time period: 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 operation mode 10 continues for the third preset time period to utilize the mechanical cold source and the cold storage cold source to jointly cool 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 operate at a larger fourth power until T0≤Ta, so that more mechanical cold sources can be further added to cool the load, ensuring that the cooling demand of the load is met to a certain extent.

[0439] In some embodiments, please combine Fig.13 , control methods include:

[0440] After step S322:

[0441] Step S3221, if T0>Tb, control the air conditioning refrigeration system 100 to enable the mechanical cold source to provide cooling for the second heat exchanger 201, 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 cooling + cold storage mode;

[0443] In the cooling+cooling storage mode, the air conditioning refrigeration system 100 is controlled so that the mechanical cold source provides cooling for the second heat exchanger 201 , and the air conditioning system 1000 is controlled so that the mechanical cold source provides cooling for the cool storage device 203 .

[0444] In the above embodiment, 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 effectively and dynamically adjusted according to the level and time of the cooling demand of the air-conditioning system 1000 to ensure the cooling effect and meet the time requirements, thereby optimizing the use and energy efficiency adjustment of the cold source, and to a certain extent, while meeting the cooling demand of the load, 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 larger fourth power to increase more mechanical cold sources: when T0>Tb, the air-conditioning system 1000 is controlled to operate in mode 5; when T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the air-conditioning system 1000 is controlled to operate in mode 6.

[0446] It can be understood that after the air-conditioning system 1000 controls the compressor 104 to operate at a larger fourth power so as to add more mechanical cold sources: 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 sources to cool 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 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, operation mode 6 can meet the time requirement and make full use of the mechanical cold source to cool the load while using the surplus cold to cool the cold storage device 203 so that the cold storage device 203 can store the surplus cold as a backup, thereby reducing the energy consumption of the air-conditioning system 1000.

[0448] In some embodiments, please combine Figure 1 The air conditioning refrigeration system 100 includes a refrigerant circuit, a fluorine pump 103, a compressor 104 and a first switching component 106. The first switching component 106 is connected to the refrigerant circuit, the fluorine pump 103 and the compressor 104. The first switching component 106 is configured to control the fluorine pump 103 and the compressor 104 to be connected to and removed from 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 the first heat exchanger 101. The coolant circuit includes the second heat exchanger 201. The second heat exchanger 201 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 be connected to the coolant circuit and removed from the coolant circuit.

[0450] In the above embodiment, on the one hand, the air-conditioning refrigeration system 100 can utilize the mutual cooperation of the fluorine pump 103, the compressor 104 and the first switching component 106 to utilize the natural cold source and / or the mechanical cold source of the compressor 104 to provide cold energy to the first heat exchanger 101. On the other hand, the cold storage and heat exchange system 200 can utilize the mutual cooperation of the cold storage device 203 and the second switching component 204 to enable 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, 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 fluorine 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 element 105, and a first heat exchanger 101.

[0452] Fluorine pump 103 is a device for circulating and conveying refrigerant (such as Freon) in a refrigerant circuit. In the process of refrigerant circulating in the refrigerant circuit, the transfer and exchange of cold energy can be achieved, helping the load to reduce the temperature.

[0453] The throttling member 105 (such as an expansion valve or a throttle valve) can reduce the pressure and temperature of the refrigerant by limiting the flow rate of the refrigerant circulating in the refrigerant circuit. The compressor 104 can increase the pressure and temperature of the refrigerant by compressing the refrigerant. The throttling member 105 and the compressor 104 can transfer and exchange more cold energy during the refrigerant circulation in the refrigerant circuit.

[0454] The third heat exchanger 102 is a device used to transfer heat (that is, transfer cooling capacity) between different media. The third heat exchanger 102 can make the natural cooling source and the refrigerant circulating in the refrigerant circuit generate heat exchange. The natural cooling source can be low-temperature air, low-temperature water or other low-temperature substances in nature.

[0455] The first switching component 106 can be used to control the fluorine pump 103 and the compressor 104 to be connected to and removed from 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 fluorine pump 103 and the compressor 104 participate in the refrigeration process.

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

[0457] The water pump 202 is a device for circulating and conveying a cooling liquid (such as water) in a cooling liquid loop. In the process where the cooling liquid circulates in the cooling liquid loop, the transfer and exchange of cold energy can be achieved, helping the load to reduce the temperature.

[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 the air conditioning refrigeration 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 cold storage device 203 to be connected to and removed 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 increase the independence and flexibility of the cold storage device 203 to a certain extent by controlling the cold storage device 203 to access and remove from the coolant circuit, which is conducive to promoting the modularization of the air-conditioning system 1000, thereby helping to optimize energy distribution, thereby reducing the energy consumption of the air-conditioning system 1000 and improving the operating efficiency of the air-conditioning system 1000. At the same time, when the cold storage device 203 fails or requires maintenance, the air-conditioning system 1000 can maintain normal operation to a certain extent.

[0461] It should be noted that the fluorine pump 103 is used to circulate and transport the refrigerant in the refrigerant circuit. The water pump 202 is used to circulate and transport the coolant in the coolant circuit. In the present invention, the water pump 202 and the fluorine pump 103 are commonly used terms in the technical field and should not be regarded as limiting the refrigerant and the coolant.

[0462] It should be noted that when the refrigerant flows in the refrigerant circuit, the refrigerant can undergo phase change, thereby absorbing and releasing heat. The refrigerant includes but is not limited to alkanes, tetrafluoroethane, freon, propane (R290), isobutane, etc., and the present invention is not limited to this.

[0463] When the coolant flows in the coolant loop, the temperature of the coolant changes (increases or decreases), but basically no phase change occurs. The coolant includes but is not limited to water, ethylene glycol and mixtures thereof (such as ethylene glycol-water mixtures), etc.

[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, etc. In one embodiment, the cold storage device 203 is filled with a phase change material, whose phase change point temperature is lower than the first set temperature and higher than the ambient temperature.

[0465] In some embodiments, please combine Figure 1 , the first switching assembly 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 fluorine pump 103, and the other end is connected to the outlet of the fluorine pump 103. The first switching component 106 is configured to move the fluorine pump 103 out of the refrigerant circuit when the first valve 107 is opened; and connect the fluorine 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 opened; and to connect the compressor 104 to the refrigerant circuit when the second valve 108 is closed.

[0468] In the above embodiment, the first valve 107 can control the fluorine pump 103 to be connected to and removed from the refrigerant circuit, and the second valve 108 can control the compressor 104 to be connected to and removed from the refrigerant circuit, so that the natural cold source and / or the mechanical cold source of the compressor 104 can be used to provide cold energy 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 for controlling the flow of the refrigerant by opening and closing a passage.

[0470] When the first valve 107 is open, the fluorine pump 103 stops running, and the refrigerant flows from the inlet of the fluorine pump 103 through the first valve 107 and does not pass through the fluorine pump 103 to the outlet of the fluorine pump 103, that is, the fluorine pump 103 is removed from the refrigerant circuit. When the first valve 107 is closed, the fluorine pump 103 is running, and the refrigerant flows from the inlet of the fluorine pump 103 through the fluorine pump 103 and does not pass through the first valve 107 to the outlet of the fluorine pump 103, that is, the fluorine pump 103 is connected to the refrigerant circuit.

[0471] When the second valve 108 is open, the compressor 104 stops running, and the refrigerant flows from the inlet of the compressor 104 to the outlet of the compressor 104 through the second valve 108 without passing through the compressor 104, that is, the compressor 104 is removed from the refrigerant circuit. When the second valve 108 is closed, the compressor 104 is running, and the refrigerant flows from the inlet of the compressor 104 to the outlet of the compressor 104 through the compressor 104 without passing through the second valve 108, that is, the compressor 104 is connected to the refrigerant circuit.

[0472] Optionally, the first valve 107 and the second valve 108 may be one-way valves for limiting the flow direction of the refrigerant.

[0473] In some embodiments, please combine 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, and 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 embodiment, the first valve assembly 205 can control the cold storage device 203 to be connected to and removed from the coolant circuit, and the second valve assembly 206 can control whether the cold storage device 203 stores the cold of the first heat exchanger 101, so that the cold storage device 203 can store the cold of the first heat exchanger 101 and supply cold to the second heat exchanger 201 by means of the mutual cooperation of the cold storage device 203, the first valve assembly 205 and the second valve assembly 206, 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 to the inlet of the second heat exchanger 201 through the first valve assembly 205, that is, the coolant flowing out of the first heat exchanger 101 does not flow into the cold storage device 203. In one embodiment, the coolant flows from the outlet of the first heat exchanger 101 to the inlet of the cold storage device 203 through the first valve assembly 205, 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 out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201. In one embodiment, the coolant flows from the outlet of the cold storage device 203 to the inlet of the second heat exchanger 201 through the second valve assembly 206, and then flows back to the inlet of the first heat exchanger 101 from the outlet of the second heat exchanger 201, that is, the coolant flowing out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201. In one embodiment, the coolant flows from the outlet of the cold storage device 203 to the outlet of the second heat exchanger 201 through the second valve assembly 206, and then flows back to the inlet of the first heat exchanger 101 from the outlet of the second heat exchanger 201, that is, the coolant flowing out of the cold storage device 203 flows back to the first heat exchanger 101 without passing through the second heat exchanger 201.

[0479] It is understandable that, when 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 loop. When 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 be connected to the coolant loop.

[0480] It is understandable that, when the coolant flowing out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201, the second valve assembly 206 is configured to control the cold storage device 203 to supply cold to the second heat exchanger 201, that is, not to store the cold of the first heat exchanger 101. When the coolant flowing out of the cold storage device 203 does not flow back to the first heat exchanger 101 through the second heat exchanger 201, the second valve assembly 206 is configured to control the cold storage device 203 to store the cold of the first heat exchanger 101.

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

[0482] It is understandable that the first valve assembly 205 can increase the independence and flexibility of the cold storage device 203 to a certain extent by controlling the cold storage device 203 to be connected to and removed from the coolant circuit, which is conducive to promoting the modularization of the air-conditioning system 1000, thereby helping to optimize energy distribution, thereby reducing the energy consumption of the air-conditioning system 1000 and improving the operating efficiency of the air-conditioning system 1000. At the same time, when the cold storage device 203 fails or requires maintenance, the air-conditioning system 1000 can maintain normal operation to a certain extent.

[0483] Please refer to Fig.14 A control device 2 of an air conditioning system 1000 according to an embodiment of the present invention 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, the steps of the control method of any of the above embodiments are implemented.

[0484] Please refer to Fig.14 , an embodiment of the present invention provides an air conditioning system 1000 including the control device of the above embodiment.

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

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

[0487] An embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by the processor 22, the steps of the control method of any of the above embodiments are implemented.

[0488] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0489] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable actions for implementing a specific logical function or process step, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0490] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, combine, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An air conditioning system, characterized in that: include: An air conditioning refrigeration system, the air conditioning refrigeration system comprising a refrigerant circuit, a fluorine pump, a compressor and a first switching component, the first switching component is connected to the refrigerant circuit, the fluorine pump and the compressor, and the first switching component is configured to control the fluorine pump and the compressor to be connected to and removed from the refrigerant circuit; A cold storage and heat exchange system, the cold storage and heat exchange system comprising 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 comprises a second heat exchanger, the second heat exchanger is used to exchange heat with a load, the second switching component is connected to the cold storage device, the first heat exchanger and the second heat exchanger, and the second switching component is configured to control the cold storage device to be connected to the coolant circuit and removed from the coolant circuit; When the cold storage device is connected to the coolant 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.

2. The air conditioning system according to claim 1, characterized in that: The first switching assembly includes a first valve and a second valve; One end of the first valve is connected to the inlet of the fluorine pump, and the other end is connected to the outlet of the fluorine pump, and the first switching component is configured to move the fluorine pump out of the refrigerant circuit when the first valve is opened; and connect the fluorine pump to the refrigerant circuit when the first valve is closed; 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 move the compressor out of the refrigerant circuit when the second valve is opened, and to connect the compressor to the refrigerant circuit when the second valve is closed.

3. The air conditioning system according to claim 1, characterized in that: The second switching assembly includes a first valve assembly and a second valve assembly, 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; 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.

4. The air conditioning system according to claim 3, characterized in that: The first valve assembly includes a third valve and a fourth valve, the third valve connects the outlet of the first heat exchanger and the inlet of the cold storage device, and the fourth valve connects the outlet of the first heat exchanger and the inlet of the second heat exchanger.

5. The air conditioning system according to claim 3, characterized in that: The second valve assembly includes a fifth valve and a sixth valve, the fifth valve connecting the outlet of the cold storage device and the outlet of the second heat exchanger, and the sixth valve connecting the outlet of the cold storage device and the inlet of the second heat exchanger.

6. The air conditioning system according to claim 1, characterized in that: 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 enable one of the following cold sources to provide cooling for the second heat exchanger: a fluorine pump, a compressor, a fluorine pump + a compressor, a cold storage device, a fluorine pump + a cold storage device, a compressor + a cold storage device, a fluorine pump + a compressor + a cold storage device; In the cooling + cold storage mode, the air-conditioning system is configured to control the first switching component and the second switching component so that one of the following cold sources supplies cold to the second heat exchanger: a fluorine pump, a compressor, or a fluorine pump + a compressor, and is configured to control the second switching component so that the cold storage device stores the cold of the first heat exchanger.

7. The air conditioning system according to claim 6, characterized in that: 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 enable the cold storage device to provide cold for the second heat exchanger; 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 so that one of the following cold sources provides cooling for the second heat exchanger: fluorine pump, compressor, fluorine pump + compressor, fluorine pump + cold storage device, compressor + cold storage device, fluorine pump + compressor + cold storage device, and is configured to control the second switching component so that the cold storage device stores the cold of the first heat exchanger.

8. The air conditioning system according to claim 7, characterized in that: In the case of T0-T1>T', the air conditioning system is configured to control the first switching component and the second switching component to enable the fluorine pump to provide cooling for the second heat exchanger; In the case of T″<T0-T1≤T', the air conditioning system is configured to control the first switching component and the second switching component to enable the fluorine pump+compressor to provide cooling for the second heat exchanger, and the compressor operates at a first power; In the case of T0-T1≤T", the air conditioning system is configured to control the first switching component and the second switching component to enable the compressor to provide cooling for the second heat exchanger, and the compressor operates at a second power; Wherein, 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.

9. The air conditioning system according to claim 8, characterized in that: After the fluorine pump provides cooling for 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 allow the fluorine pump to provide cooling for the second heat exchanger; After the fluorine pump provides cooling for 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 allow the fluorine pump+cooling storage device to provide cooling for the second heat exchanger for a first preset time period; After the fluorine pump is used to provide cooling for the second heat exchanger, if T0≤Tb, the cooling+cooling storage mode is entered; In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component so that the fluorine pump supplies cold to the second heat exchanger, and control the second switching component so that the cold storage device stores the cold of the first heat exchanger; Wherein, Ta is the first set temperature, Tb is the second set temperature, and Ta>Tb.

10. The air conditioning system according to claim 9, characterized in that: After the fluorine pump is made to supply cold to the second heat exchanger, and the second switching component is controlled 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 component and the second switching component to continue to make the fluorine pump supply cold to the second heat exchanger, and continue to control the second switching component to make the cold storage device store the cold of the first heat exchanger; After enabling the fluorine pump to supply cooling to the second heat exchanger and controlling the second switching component to enable the cold storage device to store the cold 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 enable the fluorine pump+cold storage device to supply cooling to the second heat exchanger for the first preset time period.

11. The air conditioning system according to claim 9 or 10, characterized in that: After the fluorine pump + cold storage device provides cooling for 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 continue to allow the fluorine pump + cold storage device to provide cooling for the second heat exchanger for a first preset time; After the fluorine pump + cold storage device provides cooling for the second heat exchanger for a first preset period of time, if T0>Ta, the air-conditioning system is configured to control the first switching component and the second switching component to make the fluorine pump + compressor provide cooling for the second heat exchanger, and the compressor operates at a first power.

12. The air conditioning system according to claim 8 or 11, characterized in that: After the fluorine pump + compressor is used to cool the second heat exchanger and the compressor is operated at the 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 to use the fluorine pump + compressor to cool the second heat exchanger and the compressor is operated at the first power; After the fluorine pump + compressor is used to cool the second heat exchanger and the compressor is operated at the first power, if T0>Ta, the air conditioning system is configured to control the first switching component and the second switching component to allow the fluorine pump + compressor + cold storage device to cool the second heat exchanger for a second preset time period; After the fluorine pump is used to provide cooling for the second heat exchanger and the compressor is operated at the first power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+cooling storage mode is entered; 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 fluorine pump + compressor to provide cold for the second heat exchanger, and control the second switching component to enable the cold storage device to 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<t2.

13. The air conditioning system according to claim 12, characterized in that: After the fluorine pump + compressor is used to supply cold to the second heat exchanger, and the second switching component is controlled 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 component and the second switching component to continue to make the fluorine pump + compressor supply cold to the second heat exchanger, and control the second switching component to continue to make the cold storage device store the cold of the first heat exchanger; After the fluorine pump + compressor is used to supply cooling to the second heat exchanger, and the second switching component is controlled 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 component and the second switching component to make the fluorine pump + compressor + cold storage device supply cooling to the second heat exchanger for a second preset period of time.

14. The air conditioning system according to claim 12 or 13, characterized in that: After the fluorine pump + compressor + cold storage device provides cooling for 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 continue to allow the fluorine pump + compressor + cold storage device to provide cooling for the second heat exchanger for a second preset time; After the fluorine pump + compressor + cold storage device provides cooling for the second heat exchanger for a second preset period of time, if T0>Ta, the air-conditioning system is configured to control the first switching component and the second switching component to enable the compressor to provide cooling for the second heat exchanger, and the compressor operates at a second power.

15. The air conditioning system according to claim 8 or 14, characterized in that: After the compressor is made to provide cooling for the second heat exchanger and the compressor is operated at the 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 make the compressor provide cooling for the second heat exchanger and the compressor is operated at the second power; After the compressor is made to cool the second heat exchanger and the compressor is operated at the second power, if T0>Ta, the air conditioning system is configured to control the first switching component and the second switching component to make the compressor+cooling storage device cool the second heat exchanger for a third preset time, and the compressor is operated at the third power; After the compressor is used to provide cooling for the second heat exchanger and the compressor is operated at the second power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+cooling storage mode is entered; In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component so that the compressor supplies cold to the second heat exchanger, and control the second switching component so that the cold storage device stores cold energy 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.

16. The air conditioning system according to claim 15, characterized in that: After the compressor is made to supply cold to the second heat exchanger, and the second switching component is controlled to make the cold storage device store cold energy 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 continue to make the compressor supply cold to the second heat exchanger, and continue to control the second switching component to make the cold storage device store cold energy of the first heat exchanger; After the compressor is controlled to supply cold to the second heat exchanger and the second switching component is controlled 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 component and the second switching component to make the compressor + cold storage device supply cold to the second heat exchanger for a third preset period of time, and the compressor operates at a third power.

17. The air conditioning system according to claim 15 or 16, characterized in that: After the compressor + the cold storage device provides cooling for 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 to allow the compressor + the cold storage device to provide cooling for the second heat exchanger for a third preset time and the compressor operates at the third power; After the compressor + the cold storage device provide cooling for 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; Wherein, the third power is smaller than the fourth power.

18. The air conditioning system according to claim 17, characterized in that: After controlling the compressor to operate at the 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 allow the compressor to provide cooling for the second heat exchanger, and the compressor operates at the second power; 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, entering the cooling+cooling storage mode; In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component so that the compressor supplies cold to the second heat exchanger, and control the second switching component so that the cold storage device stores cold energy of the first heat exchanger.

19. A method for controlling an air conditioning system, characterized in that: The air conditioning system comprises an air conditioning refrigeration system and a cold storage heat exchange system, the air conditioning refrigeration system is connected to 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 exchanging heat 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 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 so that at least one of the natural cold source, the mechanical cold source and the cold storage cold source supplies cold to the second heat exchanger, the air-conditioning refrigeration system is controlled so that at least one of the natural cold source and the mechanical cold source supplies cold to the cold storage device, and the cold storage heat exchange system is controlled so that the cold storage cold source supplies cold to the second heat exchanger.

20. The control method according to claim 19, characterized in that: The control method comprises: When the current signal is normal, according to 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 so that at least one of the natural cold source, the mechanical cold source and the cold storage cold source supplies cold to the second heat exchanger, and the air conditioning refrigeration system is controlled so that at least one of the natural cold source and the mechanical cold source supplies cold to the cold storage device; When the current signal is interrupted, the cold storage and heat exchange system is controlled so that the cold storage cold source provides cooling for the second heat exchanger.

21. The control method according to claim 20, characterized in that: The control method comprises: In the case of T0-T1>T', controlling the air conditioning refrigeration system so that the natural cold source provides cooling for the second heat exchanger; In the case of T″<T0-T1≤T', controlling the air conditioning refrigeration system so that the natural cold source and the mechanical cold source provide cold for the second heat exchanger, and the mechanical cold source operates at a first power; In the case of T0-T1≤T", the air conditioning refrigeration system is controlled so that the mechanical cold source provides cold for the second heat exchanger, and the mechanical cold source operates at a second power; Wherein, 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.

22. The control method according to claim 21, characterized in that: The control method comprises: After the natural cold source is used to provide cooling for the second heat exchanger, if Tb<T0≤Ta, controlling the air conditioning refrigeration system to continue to use the natural cold source to provide cooling for the second heat exchanger; After the natural cold source provides cooling for the second heat exchanger, if T0>Ta, controlling the air conditioning refrigeration system and the cold storage heat exchange system to allow the natural cold source and the cold storage cold source to provide cooling for the second heat exchanger for a first preset time period; After the natural cold source provides cooling for the second heat exchanger, if T0≤Tb, the cooling+cooling storage mode is entered; In the cooling + cold storage mode, the air conditioning refrigeration system is controlled so that the natural cold source provides cold to the second heat exchanger, and the air conditioning system is controlled so that the natural cold source provides cold to the cold storage device; Wherein, Ta is the first set temperature, Tb is the second set temperature, and Ta>Tb.

23. The control method according to claim 22, characterized in that: The control method comprises: After the natural cold source is used to cool the second heat exchanger, and the air conditioning system is controlled to cool the cold storage device, if T0≤Ta, the air conditioning refrigeration system is controlled to continue to cool the second heat exchanger with the natural cold source, and the air conditioning system is controlled to continue to cool the cold storage device with the natural cold source; After the natural cold source is used to provide cooling for the second heat exchanger, and the air-conditioning system is controlled to make the natural cold source provide cooling for the cold storage device, 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 provide cooling for the second heat exchanger for a first preset period of time.

24. The control method according to claims 22 and 23, characterized in that: The control method comprises: After the natural cold source and the cold storage cold source provide cooling for the second heat exchanger for a first preset time, if T0≤Ta, control the air conditioning refrigeration system and the cold storage heat exchange system to continue to allow the natural cold source and the cold storage cold source to provide cooling for the second heat exchanger for a first preset time; After the natural cold source and the cold storage cold source provide cooling for the second heat exchanger for a first preset period of time, if T0>Ta, the air-conditioning refrigeration system is controlled to allow the natural cold source and the mechanical cold source to provide cooling for the second heat exchanger, and the mechanical cold source operates at a first power.

25. The control method according to claims 21 and 24, characterized in that: The control method comprises: After the natural cold source and the mechanical cold source are used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the first power, if Tb<T0≤Ta, the air conditioning refrigeration system is controlled to continue to use the natural cold source and the mechanical cold source to provide cooling for the second heat exchanger and the mechanical cold source is operated at the first power; After the natural cold source and the mechanical cold source are used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the first power, if T0>Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to allow the natural cold source, the mechanical cold source and the cold storage cold source to provide cooling for the second heat exchanger for a second preset time period; After the natural cold source and the mechanical cold source are used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the first power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+cooling storage mode is entered; In the cooling + cold storage mode, the air conditioning refrigeration system is controlled so that the natural cold source and the mechanical cold source provide cold for the second heat exchanger, and the air conditioning system is controlled so that the natural cold source and the mechanical cold source provide cold for 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<t2.

26. The control method according to claim 25, characterized in that: The control method comprises: After the natural cold source and the mechanical cold source are used to cool the second heat exchanger, and the air conditioning system is controlled to make the natural cold source and the mechanical cold source cool the cold storage device, if T0≤Ta, the air conditioning refrigeration system is controlled to continue to make the natural cold source and the mechanical cold source cool the second heat exchanger, and the air conditioning system is controlled to continue to make the natural cold source and the mechanical cold source cool the cold storage device; After allowing the natural cold source and the mechanical cold source to supply cooling to the second heat exchanger, and controlling the air-conditioning system to allow the natural cold source and the mechanical cold source to supply cooling to the cold storage device, if T0>Ta, controlling the air-conditioning refrigeration system and the cold storage heat exchange system to allow the natural cold source, the mechanical cold source and the cold storage cold source to supply cooling to the second heat exchanger for a second preset period of time.

27. The control method according to claims 25 and 26, characterized in that: The control method comprises: After the natural cold source, the mechanical cold source and the cold storage cold source provide cooling for the second heat exchanger for a second preset time, if T0≤Ta, control the air conditioning refrigeration system and the cold storage heat exchange system to continue to allow the natural cold source, the mechanical cold source and the cold storage cold source to provide cooling for the second heat exchanger for a second preset time; After the natural cold source, the mechanical cold source and the cold storage cold source provide cooling for the second heat exchanger for a second preset period of time, if T0>Ta, the air-conditioning refrigeration system is controlled to make the mechanical cold source provide cooling for the second heat exchanger, and the mechanical cold source operates at a second power.

28. The control method according to claims 21 and 27, characterized in that: The control method comprises: After the mechanical cold source is used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the second power, if Tb<T0≤Ta, the air conditioning refrigeration system is controlled to continue to use the mechanical cold source to provide cooling for the second heat exchanger and the mechanical cold source is operated at the second power; After the mechanical cold source is used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the second power, if T0>Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to allow the cold storage cold source and the mechanical cold source to provide cooling for the second heat exchanger for a third preset time, and the mechanical cold source is operated at the third power; After the mechanical cold source is used to provide cooling for the second heat exchanger and the mechanical cold source is operated at the second power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+cooling storage mode is entered; In the cooling + cold storage mode, the air conditioning refrigeration system is controlled so that the mechanical cold source provides cold to the second heat exchanger, and the air conditioning system is controlled so that the mechanical cold source provides 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<t2.

29. The control method according to claim 28, characterized in that: The control method comprises: After the mechanical cold source is controlled to provide cooling for the second heat exchanger, and the air conditioning system is controlled to provide cooling for the cold storage device, if T0≤Ta, the air conditioning refrigeration system is controlled to continue to provide cooling for the second heat exchanger by the mechanical cold source, and the air conditioning system is controlled to continue to provide cooling for the cold storage device by the mechanical cold source; After the mechanical cold source is made to supply cold to the second heat exchanger, and the air-conditioning system is controlled to make the mechanical cold source supply cold to the cold storage device, if T0>Ta, the air-conditioning refrigeration system and the cold storage heat exchange system are controlled to make the cold storage cold source and the mechanical cold source supply cold to the second heat exchanger for a third preset period of time, and the mechanical cold source operates at a third power.

30. The control method according to claims 28 and 29, characterized in that: The control method comprises: After the cold storage cold source and the mechanical cold source provide cooling for the second heat exchanger for a third preset time and the mechanical cold source operates at a third power, if T0≤Ta, controlling the air conditioning refrigeration system and the cold storage heat exchange system to continue to allow the cold storage cold source and the mechanical cold source to provide cooling for the second heat exchanger for a third preset time and the mechanical cold source operates at a third power; After the cold storage cold source and the mechanical cold source provide cooling for 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 provides cooling for the second heat exchanger until T0≤Ta, and the mechanical cold source operates at a fourth power; Wherein, the third power is smaller than the fourth power.

31. The control method according to claim 30, characterized in that: The control method comprises: After the mechanical cold source is used to provide cooling for the second heat exchanger until T0≤Ta and the mechanical cold source is operated at the fourth power, if T0>Tb, the air conditioning refrigeration system is controlled to allow the mechanical cold source to provide cooling for the second heat exchanger and the mechanical cold source is operated at the second power; The mechanical cold source is used to provide cooling for the second heat exchanger until T0≤Ta, and after the mechanical cold source is operated at the fourth power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling+cooling storage mode is entered; In the cooling+cooling storage mode, the air conditioning refrigeration system is controlled so that the mechanical cold source provides cooling for the second heat exchanger, and the air conditioning system is controlled so that the mechanical cold source provides cooling for the cool storage device.

32. The control method according to claim 21, characterized in that: The air conditioning refrigeration system comprises a refrigerant circuit, a fluorine pump, a compressor and a first switching component, wherein the first switching component is connected to the refrigerant circuit, the fluorine pump and the compressor, and the first switching component is configured to control the fluorine pump and the compressor to be connected to and removed from the refrigerant circuit; 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 the first heat exchanger. The coolant circuit includes the second heat exchanger. The second heat exchanger is used to exchange 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 be connected to the coolant circuit and removed from the coolant circuit.

33. The control method according to claim 32, characterized in that: The first switching assembly includes a first valve and a second valve; One end of the first valve is connected to the inlet of the fluorine pump, and the other end is connected to the outlet of the fluorine pump, and the first switching component is configured to move the fluorine pump out of the refrigerant circuit when the first valve is opened; and connect the fluorine pump to the refrigerant circuit when the first valve is closed; 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 move the compressor out of the refrigerant circuit when the second valve is opened, and to connect the compressor to the refrigerant circuit when the second valve is closed.

34. The control method according to claim 32, characterized in that: The second switching assembly includes a first valve assembly and a second valve assembly; 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; 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.

35. A control device for an air conditioning system, characterized in that: including a processor and a memory; The memory stores a computer program, and when the computer program is executed by the processor, the steps of the control method described in any one of claims 20-34 are implemented.

36. An air conditioning system, characterized in that: A control device comprising the control device of claim 35.

37. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the control method described in any one of claims 20-34 are implemented.

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