Refrigeration equipment control method and device, electric equipment and storage medium

Abstract

Embodiments of the present application relate to a refrigeration equipment control method and device, an electric equipment and a storage medium. The method comprises: collecting current refrigeration side temperature data and heat dissipation side temperature data of the refrigeration equipment; determining whether the refrigeration equipment currently meets a refrigeration efficiency optimization condition based on the refrigeration side temperature data and the heat dissipation side temperature data; if the refrigeration efficiency optimization condition is met, determining a target control object of the refrigeration equipment; adjusting a control parameter of the target control object based on a corresponding relationship between a working state of the target control object and a refrigeration efficiency, so that the working state of the target control object is adjusted to a target state, wherein the target state of the target control object is used to improve the refrigeration efficiency of the refrigeration equipment. The embodiments of the present application improve the refrigeration efficiency of the refrigeration equipment, reduce the difficulty of structural design, and further reduce the design and manufacturing cost of the refrigeration equipment.

Description

Technical Field

[0001] This application relates to the field of electrical equipment control technology, and in particular to a method, apparatus, electrical equipment, and computer-readable storage medium for controlling refrigeration equipment. Background Technology

[0002] With the development of refrigeration technology, in addition to refrigerant-based refrigeration solutions, solid-state coolers such as TEC (thermal energy dispersive) chips can also be used. These coolers achieve refrigeration by controlling the input current. However, the refrigeration efficiency of TEC chips is related to parameters such as the temperature difference between the hot and cold surfaces and the magnitude of the input current. That is, the greater the temperature difference, the lower the refrigeration efficiency; the refrigeration efficiency is higher within a certain range of input current; and the refrigeration efficiency decreases when the input current exceeds this range.

[0003] To improve cooling efficiency, a common approach is to adjust the heat dissipation structure to reduce the temperature difference between the hot and cold ends. However, these approaches have limitations, such as the inability to actively change control parameters to adjust input power and heat exchange capacity, which prevents further improvements in the cooling efficiency of the refrigerator. Summary of the Invention

[0004] In view of this, in order to solve some or all of the above-mentioned technical problems, embodiments of this application provide a refrigeration equipment control method, apparatus, electrical equipment, and computer-readable storage medium.

[0005] In a first aspect, embodiments of this application provide a method for controlling a refrigeration device. The method includes: collecting current cooling-side temperature data and heat dissipation-side temperature data of the refrigeration device; determining whether the refrigeration device currently meets the conditions for optimizing refrigeration efficiency based on the cooling-side temperature data and heat dissipation-side temperature data; if it meets the conditions for optimizing refrigeration efficiency, determining the target control object of the refrigeration device; and adjusting the control parameters of the target control object based on the correspondence between the working state of the target control object and the refrigeration efficiency, so that the working state of the target control object is adjusted to the target state, wherein the target state of the target control object is used to improve the refrigeration efficiency of the refrigeration device.

[0006] In one possible implementation, the refrigeration device includes a cooler, the refrigeration-side temperature data includes a first cold-end temperature of the cooler, and the heat dissipation-side temperature data includes a first hot-end temperature of the cooler; and based on the refrigeration-side temperature data and the heat dissipation-side temperature data, determining whether the refrigeration device currently meets the refrigeration efficiency optimization conditions includes: determining a first temperature difference between the first hot-end temperature and the first cold-end temperature, and the continuous operating time of the cooler; determining the current defrost interval time; determining whether the first cold-end temperature is less than or equal to a preset defrost temperature, whether the continuous operating time exceeds the defrost interval time, and whether the first temperature difference exceeds the maximum allowable temperature difference; if the first cold-end temperature is less than or equal to the defrost temperature, the continuous operating time exceeds the defrost interval time, and the first temperature difference does not exceed the maximum allowable temperature difference, it is determined that the refrigeration device currently meets the refrigeration efficiency optimization conditions.

[0007] In one possible implementation, determining the target controlled object of the refrigeration equipment includes: determining the input current of the refrigerator as the target controlled object; and adjusting the control parameters of the target controlled object to adjust the operating state of the target controlled object to a target state, including: cutting off the input current of the refrigerator to reduce a first temperature difference; controlling the refrigerator to operate with a rated reverse current to increase a first cold end temperature in response to determining that the first temperature difference is less than or equal to a first preset temperature difference; and cutting off the rated reverse current and setting the continuous operating time to an initial value and re-recording the continuous operating time in response to the first cold end temperature reaching a preset defrost exit temperature.

[0008] In one possible implementation, the refrigeration equipment further includes a heat exchanger, comprising a cold-end heat exchanger and a hot-end heat exchanger; and determining a target controlled object of the refrigeration equipment, including: determining the cold-end heat exchanger and the hot-end heat exchanger as target controlled objects; and adjusting the control parameters of the target controlled objects to adjust the operating state of the target controlled objects to a target state, including: controlling the cold-end heat exchanger and the hot-end heat exchanger to stop operating in response to the refrigeration equipment currently operating with rated reverse current, or the refrigeration equipment currently having zero input current and having ended operating with rated reverse current; and controlling the cold-end heat exchanger to stop operating and controlling the hot-end heat exchanger to continue operating in response to the refrigeration equipment currently having zero input current and not operating with rated reverse current.

[0009] In one possible implementation, after determining the first temperature difference between the first hot end temperature and the first cold end temperature, the method further includes: in response to determining that the first temperature difference is greater than or equal to a preset maximum allowable temperature difference, determining that the refrigeration equipment currently meets the refrigeration efficiency optimization conditions; and determining the target control object of the refrigeration equipment, including: determining that the input current of the refrigerator is the target control object; and adjusting the control parameters of the target control object to adjust the operating state of the target control object to a target state, including: cutting off the input current of the refrigerator to reduce the first temperature difference; and in response to the first temperature difference decreasing to a second preset temperature difference, restoring the input current.

[0010] In one possible implementation, determining the current defrost interval includes: determining the current humidity of the cooling space targeted by the refrigeration equipment, and obtaining a preset reference humidity of the cooling space; determining the humidity difference between the current humidity and the preset reference humidity, and determining the current defrost interval reduction based on the correspondence between the humidity difference and the defrost interval increment; and determining the current defrost interval based on the preset initial defrost interval and the current defrost interval reduction.

[0011] In one possible implementation, after determining whether the first cold end temperature is less than or equal to a preset defrost temperature and whether the continuous operating time exceeds the defrost interval, the method further includes: if the continuous operating time does not exceed the defrost interval, searching for the target input current corresponding to the first temperature difference from a preset refrigeration efficiency table, wherein the target input current is the input current corresponding to the highest refrigeration efficiency of the refrigerator at the first temperature difference; determining the current refrigeration power of the refrigerator and determining whether the current refrigeration power meets the preset refrigeration power conditions; if the refrigeration power conditions are met, controlling the input current of the refrigerator to the target input current.

[0012] In one possible implementation, after determining whether the current cooling power meets the preset cooling power conditions, the method further includes: if the current cooling power does not meet the cooling power conditions, finding the maximum effective input current corresponding to the first temperature difference from the cooling efficiency table, wherein the maximum effective input current is the maximum input current that makes the cooling efficiency of the cooler within the target cooling efficiency range; adjusting the input current of the cooler to the maximum effective input current so as to increase the cooling power of the cooler.

[0013] In one possible implementation, determining whether the current cooling power meets the preset cooling power conditions includes: determining whether the current cooling power is greater than or equal to the preset heat leakage power and minimum cooling power; if the current cooling power is greater than or equal to the heat leakage power and minimum cooling power, determining that the current cooling power meets the cooling power conditions.

[0014] In one possible implementation, the refrigeration device includes a heat exchanger, which includes a hot-end heat exchanger, and the heat dissipation side temperature data includes a second hot-end temperature of the hot-end heat exchanger; and determines whether the refrigeration device currently meets the refrigeration efficiency optimization conditions based on the refrigeration side temperature data and the heat dissipation side temperature data, including: collecting the ambient temperature of the space where the refrigeration device is located; determining the opening temperature of the hot-end heat exchanger based on the ambient temperature; and determining that the refrigeration device currently meets the refrigeration efficiency optimization conditions in response to determining that the second hot-end temperature exceeds the opening temperature.

[0015] In one possible implementation, determining the target control object of the refrigeration equipment includes: determining the hot-end heat exchanger as the target control object; and adjusting the control parameters of the target control object to adjust the operating state of the target control object to the target state, including: controlling the hot-end heat exchanger to perform active heat exchange to reduce the temperature of the second hot end.

[0016] In one possible implementation, determining the start-up temperature of the hot-end heat exchanger based on the ambient temperature includes: determining a preset offset temperature corresponding to the ambient temperature; and determining the sum of the ambient temperature and the offset temperature as the start-up temperature of the hot-end heat exchanger.

[0017] In one possible implementation, the heat exchanger includes a cold-end heat exchanger, and the cooling-side temperature data includes a second cold-end temperature of the cold-end heat exchanger; based on the cooling-side temperature data and the heat dissipation-side temperature data, determining whether the cooling equipment currently meets the cooling efficiency optimization conditions further includes: collecting the space temperature of the cooling space targeted by the cooling equipment; determining whether a second temperature difference between the space temperature and the second cold-end temperature exceeds a third preset temperature difference; if it exceeds the third preset temperature difference, determining that the cooling equipment currently meets the cooling efficiency optimization conditions.

[0018] In one possible implementation, determining the target control object of the refrigeration equipment includes: determining the cold-end heat exchanger as the target control object; and adjusting the control parameters of the target control object to adjust the operating state of the target control object to the target state, including: determining the current target operating power of the cold-end heat exchanger based on the correspondence between the second temperature difference and the operating power of the cold-end heat exchanger; and adjusting the operating power of the cold-end heat exchanger to the target operating power.

[0019] Secondly, embodiments of this application provide a refrigeration equipment control device, which includes: a data acquisition module for acquiring current cooling-side temperature data and heat dissipation-side temperature data of the refrigeration equipment; a first determination module for determining whether the refrigeration equipment currently meets the refrigeration efficiency optimization conditions based on the cooling-side temperature data and the heat dissipation-side temperature data; a second determination module for determining the target control object of the refrigeration equipment if the refrigeration efficiency optimization conditions are met; and a first adjustment module for adjusting the control parameters of the target control object based on the correspondence between the working state of the target control object and the refrigeration efficiency, so that the working state of the target control object is adjusted to the target state, wherein the target state of the target control object is used to improve the refrigeration efficiency of the refrigeration equipment.

[0020] Thirdly, embodiments of this application provide an electrical device, including: a memory for storing a computer program; a processor for executing the computer program stored in the memory, wherein when the computer program is executed, it implements the method of any embodiment of the refrigeration device control method of the first aspect of this application; and a refrigeration device for receiving control parameters output by the processor to adjust the working state of the target controlled object to a target state.

[0021] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, it implements the method of any embodiment of the refrigeration equipment control method of the first aspect described above.

[0022] Fifthly, embodiments of this application provide a computer program including computer-readable code, which, when executed on a device, causes a processor in the device to implement the method of any embodiment of the refrigeration device control method of the first aspect described above.

[0023] The refrigeration equipment control method, apparatus, electrical equipment, and computer-readable storage medium provided in this application collect refrigeration-side temperature data and heat dissipation-side temperature data of the refrigeration equipment. Based on the refrigeration-side temperature data and heat dissipation-side temperature data, it determines that the refrigeration equipment currently meets the conditions for optimizing refrigeration efficiency. Then, based on the correspondence between the working state of the target controlled object and the refrigeration efficiency, it adjusts the control parameters of the target controlled object, adjusting the working state of the target controlled object to the target state, thereby improving the refrigeration efficiency of the refrigeration equipment. This application embodiment realizes real-time adjustment of control parameters according to the current working state of the refrigeration equipment to actively regulate the refrigeration efficiency, enabling the refrigeration equipment to operate in a target state with high refrigeration efficiency, thereby maximizing the refrigeration efficiency of the refrigeration equipment and reducing the impact of objective conditions such as ambient temperature and hardware structure on the refrigeration efficiency. Furthermore, this application embodiment does not require adjustment of the heat dissipation structure, reducing the structural design difficulty while improving refrigeration efficiency, thereby further reducing the design and manufacturing cost of the refrigeration equipment. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0027] Figure 1 A flowchart illustrating a refrigeration equipment control method provided in an embodiment of this application;

[0028] Figure 2 A flowchart illustrating another refrigeration equipment control method provided in an embodiment of this application;

[0029] Figure 3 A flowchart illustrating another refrigeration equipment control method provided in this application embodiment;

[0030] Figure 4 A flowchart illustrating another refrigeration equipment control method provided in this application embodiment;

[0031] Figure 5 A flowchart illustrating another refrigeration equipment control method provided in this application embodiment;

[0032] Figure 6 A schematic diagram illustrating the relationship between input current and cooling efficiency provided in an embodiment of this application;

[0033] Figure 7 This is a schematic diagram of the structure of the heat exchanger and cooler provided in the embodiments of this application;

[0034] Figure 8 A flowchart illustrating another refrigeration equipment control method provided in this application embodiment;

[0035] Figure 9 A flowchart illustrating another refrigeration equipment control method provided in this application embodiment;

[0036] Figure 10This is a schematic diagram of the structure of a refrigeration equipment control device provided in an embodiment of this application;

[0037] Figure 11 This is a schematic diagram of the structure of an electrical device provided in an embodiment of this application. Detailed Implementation

[0038] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application.

[0039] Those skilled in the art will understand that the terms "first" and "second" in the embodiments of this application are only used to distinguish different steps, devices or modules, and do not represent any specific technical meaning, nor do they indicate the logical order between them.

[0040] It should also be understood that in this embodiment, "multiple" can refer to two or more, and "at least one" can refer to one, two or more.

[0041] It should also be understood that any component, data or structure mentioned in the embodiments of this application can generally be understood as one or more unless explicitly defined or given contrary guidance in the context.

[0042] Furthermore, the term "and / or" in this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "or" relationship.

[0043] It should also be understood that the description of the various embodiments in this application emphasizes the differences between the various embodiments, and the similarities or similarities can be referred to each other. For the sake of brevity, they will not be described in detail.

[0044] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0045] Techniques, circuits, and devices known to a person skilled in the art may not be discussed in detail, but where appropriate, such techniques, circuits, and devices should be considered part of the specification.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. To facilitate understanding of the embodiments of this application, the application will be described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0048] In order to solve the technical problem that existing technologies cannot improve the refrigeration efficiency by actively adjusting the control parameters of refrigeration equipment, this application provides a refrigeration equipment control method that can enable the refrigeration equipment to operate in a state with high refrigeration efficiency.

[0049] Figure 1 This is a flowchart illustrating a refrigeration equipment control method provided in an embodiment of this application. This method can be applied to electrical equipment with refrigeration functions, such as refrigerators, freezers, and air conditioners, as well as to devices communicatively connected to these refrigeration-functional electrical equipment, such as smartphones, laptops, desktop computers, portable computers, servers, or one or more other devices. These devices can execute the method and output control parameters to the refrigeration equipment via wired or wireless transmission to adjust the operating state of the refrigeration equipment. Furthermore, the executing entity of this method can be hardware or software. When the executing entity is hardware, it can be one or more of the aforementioned devices. For example, a single device can execute this method, or multiple devices can cooperate to execute this method. When the executing entity is software, this method can be implemented as multiple software programs or software modules, or as a single software program or software module. No specific limitations are made here.

[0050] like Figure 1 As shown, the method specifically includes:

[0051] Step 101: Collect the current cooling side temperature data and heat dissipation side temperature data of the refrigeration equipment.

[0052] The refrigeration equipment can be a standalone device or a module for refrigeration installed on some electrical equipment. For example, the refrigeration equipment may include a refrigerator and a heat exchanger. The refrigerator may be a thermoelectric cooler (TEC), and the heat exchanger may include a cold-end load, a hot-end load, a heat sink, a cooling fan, and other devices. The refrigeration-side temperature data may include the cold-end temperature of the refrigerator (e.g., the temperature of the cooling surface of the TEC) and the cold-end heat exchanger temperature (e.g., the temperature on the cold-end heat exchanger); the heat dissipation-side temperature data may include the hot-end temperature of the refrigerator (e.g., the temperature of the heating surface of the TEC opposite the cooling surface) and the hot-end heat exchanger temperature (e.g., the temperature on the heat sink).

[0053] Step 102: Based on the temperature data on the cooling side and the temperature data on the heat dissipation side, determine whether the refrigeration equipment currently meets the conditions for optimizing refrigeration efficiency.

[0054] The refrigeration efficiency optimization condition involves adjusting the operating state of the refrigeration equipment to improve its refrigeration efficiency. For example, refrigeration-side temperature data includes the cold-end temperature of the refrigerator, and heat dissipation-side temperature data includes the hot-end temperature of the refrigerator. When the temperature difference between the hot-end and cold-end temperatures exceeds a preset maximum allowable temperature difference, the refrigeration efficiency optimization condition is met. In this case, the input current to the refrigerator needs to be disconnected, or a reverse current needs to be input to the refrigerator to reduce the temperature difference. Alternatively, the heat dissipation-side temperature data can include the temperature on the heat sink at the hot end. If this temperature exceeds a preset temperature threshold, the refrigeration efficiency optimization condition is met, and the power of the cooling fan can be increased to improve the heat dissipation speed.

[0055] Step 103: If the refrigeration efficiency optimization conditions are met, determine the target control object of the refrigeration equipment.

[0056] In this embodiment, the target control object can be determined based on the type of cooling efficiency optimization condition. For example, when the temperature difference between the hot end and the cold end is greater than a preset maximum allowable temperature difference, the input current of the cooler is determined as the target control object. As another example, when the temperature on the radiator is greater than a preset temperature threshold, the cooling fan can be determined as the target control object.

[0057] Step 104: Based on the correspondence between the working state of the target controlled object and the cooling efficiency, adjust the control parameters of the target controlled object so that the working state of the target controlled object is adjusted to the target state.

[0058] The target state of the target controlled object is used to improve the cooling efficiency of the refrigeration equipment. Typically, the refrigeration equipment includes a TEC (Coefficient of Performance), and the formula for calculating the cooling efficiency of the TEC is COP = Qc / Pin, where COP represents the cooling efficiency, Qc represents the cooling power, and Pin represents the input power.

[0059] Typically, with a fixed input current, the COP of a refrigeration unit (TEC) is negatively correlated with the temperature difference between the cold and hot ends; that is, the greater the temperature difference, the lower the COP. Therefore, to improve the refrigeration efficiency of a refrigeration system, it is necessary to reduce the temperature difference between the cold and hot ends of the refrigeration unit.

[0060] As an example, if the temperature difference between the hot and cold ends exceeds a preset maximum allowable temperature difference, and the input current is identified as the target controlled object, the input current can be cut off or a reverse current can be input to reduce the temperature difference between the cold and hot ends of the refrigerator. As another example, if the temperature on the radiator exceeds a preset temperature threshold, and the cooling fan is identified as the target controlled object, the drive power of the cooling fan can be increased to improve the heat dissipation rate at the hot end of the refrigerator, thereby reducing the temperature difference between the cold and hot ends of the refrigerator.

[0061] The refrigeration equipment control method provided in this application collects temperature data from both the cooling and heat dissipation sides of the refrigeration equipment. Based on this data, it determines when the refrigeration equipment meets the conditions for optimizing cooling efficiency. Then, based on the correspondence between the operating state of the target controlled object and its cooling efficiency, it adjusts the control parameters of the target controlled object to bring its operating state to the target state, thereby improving the cooling efficiency of the refrigeration equipment. This method achieves real-time adjustment of control parameters according to the current operating state of the refrigeration equipment, actively regulating the cooling efficiency and ensuring that the refrigeration equipment operates in a target state with high cooling efficiency. This maximizes the cooling efficiency of the refrigeration equipment and reduces the impact of environmental temperature, hardware structure, and other objective conditions on the cooling efficiency. Furthermore, this method eliminates the need for adjustments to the heat dissipation structure, reducing structural design complexity while improving cooling efficiency, thus further reducing the design and manufacturing costs of the refrigeration equipment.

[0062] In some optional implementations of this embodiment, the refrigeration device includes a cooler, the refrigeration-side temperature data includes the first cold end temperature of the cooler, and the heat dissipation-side temperature data includes the first hot end temperature of the cooler.

[0063] The cooler can be a thermoelectric cooler (TEC), also known as a semiconductor refrigeration device. As a special type of semiconductor, the charge carriers of a TEC are also composed of holes and electrons. When a forward electric field is applied to the PN junction from the outside, P-type holes (majority carriers) and N-type electrons (majority carriers) combine and extinguish at the junction, releasing energy to form a hot end, i.e., a heat dissipation surface. When a reverse electric field is applied to the PN junction from the outside, P-type electrons (minority carriers) and N-type holes (minority carriers) strip away energy at the junction, forming a cold end, i.e., a cooling surface. The first cold end temperature mentioned above is the temperature sampled from the cooling surface, and the first hot end temperature mentioned above is the temperature sampled from the heat dissipation surface.

[0064] like Figure 2 As shown, step 102 includes:

[0065] Step 10201: Determine the first temperature difference between the first hot end temperature and the first cold end temperature, as well as the continuous operating time of the cooler.

[0066] The aforementioned continuous working time refers to the time during which the cooler continuously performs cooling operations.

[0067] Step 10202: Determine the current defrosting interval.

[0068] The defrost interval is the time interval between two defrost operations on the cold end of the refrigerator. Optionally, the defrost interval can be a fixed time, such as performing a defrost operation once a day; the defrost interval can also be changed in real time, such as setting an initial defrost interval, and updating the defrost interval according to the humidity of the refrigerated space if the temperature of the first cold end has not dropped to the preset defrost temperature (the higher the humidity, the shorter the defrost interval).

[0069] Typically, when the cold end of a refrigerator cools the space it's refrigerating, frost will form on the cold end as the temperature of the space decreases. This frost hinders heat exchange at the cold end, causing the aforementioned temperature difference to increase, and consequently reducing cooling efficiency. Therefore, the refrigerator needs to undergo a defrosting operation after operating continuously for a period of time.

[0070] Step 10203: Determine whether the temperature of the first cold end is less than or equal to the preset defrosting temperature, and whether the continuous working time exceeds the defrosting interval.

[0071] Step 10204: If the temperature of the first cold end is less than or equal to the defrost temperature and the continuous working time exceeds the defrost interval, it is determined that the refrigeration equipment currently meets the conditions for optimizing refrigeration efficiency.

[0072] This embodiment determines the first temperature difference between the first hot end temperature and the first cold end temperature of the refrigerator, and determines the defrosting interval time. When the first cold end temperature is less than or equal to the defrosting temperature, the continuous working time exceeds the defrosting interval time, and the first temperature difference does not exceed the maximum allowable temperature difference, it determines that the refrigeration efficiency optimization conditions are met. This enables real-time monitoring of the frosting state of the cold end of the refrigerator, thereby helping to perform defrosting operations on the cold end of the refrigerator in a timely manner to improve the refrigeration efficiency of the refrigerator.

[0073] In some optional implementations of this embodiment, such as Figure 2 As shown, step 103 above includes:

[0074] Step 10301: Determine the input current of the cooler as the target control object.

[0075] When the input current does not exceed the maximum limit current, under a certain fixed temperature difference, the magnitude of the input current is positively correlated with the cooling power of the refrigerator. That is, the larger the input current, the higher the cooling power, and correspondingly, the lower the cold end temperature of the refrigerator.

[0076] Step 104 includes:

[0077] Step 10401: Cut off the input current to the cooler to reduce the first temperature difference.

[0078] When the input current is 0, the cooler stops cooling, and the first temperature difference gradually decreases.

[0079] Step 10402: In response to determining that the first temperature difference is less than or equal to the first preset temperature difference, the cooler is controlled to operate with the rated reverse current to increase the first cold end temperature.

[0080] As an example, the first preset temperature difference can be 5°C. When the first temperature difference gradually decreases to less than or equal to the first preset temperature difference, the input current can be reversed to make the cold end temperature of the cooler rise rapidly and the hot end temperature drop rapidly.

[0081] Step 10403: In response to the first cold end temperature reaching the preset defrost exit temperature, the rated reverse current is cut off, and the continuous working time is set to the initial value and the continuous working time is recorded again.

[0082] As an example, the defrost exit temperature can be +5°C. When the cold end temperature of the refrigerator rises to the defrost exit temperature, the rated reverse current is cut off, that is, the input current of the refrigerator is cut off again, and the defrost operation ends. At the same time, the continuous working time can be set to an initial value (e.g., 0), and the continuous working time can be recorded again from the initial value, waiting for the next defrost operation.

[0083] This embodiment uses the input current as the target control object. When defrosting is required, the on / off state and flow direction of the input current are controlled to achieve the purpose of defrosting the cold end of the refrigerator, thereby reducing the impact of cold end frost on the refrigeration efficiency.

[0084] In some optional implementations of this embodiment, the refrigeration equipment further includes a heat exchanger, which includes a cold-end heat exchanger and a hot-end heat exchanger. The cold-end heat exchanger may include a cold-end radiator, a cold-end fan, etc., for absorbing heat from the refrigeration space and lowering its temperature. The hot-end heat exchanger may include a hot-end radiator, a hot-end fan, etc., for dissipating heat to the outside and lowering the hot-end temperature of the refrigeration unit.

[0085] Based on the above Figure 2 Corresponding embodiments, such as Figure 3 As shown, step 103 above includes:

[0086] Step 10302: Determine the cold-end heat exchanger and the hot-end heat exchanger as the target control objects.

[0087] Based on this, step 104 includes:

[0088] Step 10404: In response to the refrigerator currently operating with rated reverse current, or the refrigerator's current input current being zero and operation ending with rated reverse current, control the cold end heat exchanger and the hot end heat exchanger to stop operating.

[0089] When the refrigerator operates with rated reverse current, the cold end temperature rises and the hot end temperature decreases. The cold end heat exchanger stops operating, which slows down the heat exchange process between the cold end and the cold end heat exchanger, thus promoting the rise of the cold end temperature and increasing the defrosting speed. The hot end heat exchanger stops operating, which slows down the heat exchange process at the hot end of the refrigerator, thus helping to keep the hot end at a low temperature and thereby reducing the temperature of the heated cold end after defrosting.

[0090] When the input current of the refrigerator is zero and the operation ends at the rated reverse current, the cold end heat exchanger and the hot end heat exchanger stop operating. This allows the temperature of the heated cold end and the cooled hot end of the refrigerator to be maintained for a certain period of time, which is beneficial for the cold end temperature to decrease spontaneously after defrosting.

[0091] Step 10405: In response to the current input current of the cooler being zero and not operating at the rated reverse current, the cold end heat exchanger is controlled to stop operating, and the hot end heat exchanger is controlled to continue operating.

[0092] When the input current is zero and the system is not operating with the rated reverse current, it indicates that the input current has been cut off. However, since the first temperature difference has not yet decreased to the first preset temperature difference, the rated reverse current has not yet been activated. After the input current is cut off, the cold end temperature will be pulled up by the hot end. If the cold end heat exchanger is activated at this time, heat loss from the cold end will occur, slowing down the process of the cold end temperature being pulled up by the hot end. This will also slow down the process of the first temperature difference decreasing, which is not conducive to improving cooling efficiency. Therefore, the cold end heat exchanger needs to be turned off. The hot end heat exchanger continues to operate, allowing the hot end temperature to continue to decrease, which helps to accelerate the rate at which the first temperature difference decreases.

[0093] This embodiment controls the operating status of the cold-end heat exchanger and the hot-end heat exchanger by determining whether the input current is cut off and whether the rated reverse current has ended. This helps to reduce the temperature difference between the hot-end and cold-end temperatures of the refrigerator as quickly as possible, thereby further improving the refrigeration efficiency and reducing the power consumption of the refrigeration equipment.

[0094] In some optional implementations of this embodiment, such as Figure 4 As shown, after step 10201 above, the method further includes:

[0095] Step 10205: In response to determining that the first temperature difference is greater than or equal to the preset maximum allowable temperature difference, determine that the refrigeration equipment currently meets the refrigeration efficiency optimization conditions.

[0096] Step 103 includes:

[0097] Step 10303: Determine the input current of the cooler as the target control object.

[0098] Step 104 includes:

[0099] Step 10406: Cut off the input current to the cooler to reduce the first temperature difference.

[0100] After the input current is cut off, the cold end of the cooler stops cooling and the hot end stops dissipating heat. The temperature of the cold end can be gradually increased by the hot end, thereby reducing the first temperature difference.

[0101] Step 10407: In response to the first temperature difference decreasing to the second preset temperature difference, the input current is restored.

[0102] As an example, if the maximum allowable temperature difference is ΔTmax, then the second preset temperature difference can be 0.8ΔTmax. When the first temperature difference decreases to the second preset temperature difference, current can continue to be input to the cooler to enable the cooler to work normally. Then, the other steps of the method can be executed.

[0103] This embodiment controls the on / off state of the input current by determining whether the temperature difference between the hot end and cold end of the cooler exceeds the maximum allowable temperature difference. This can effectively avoid the reduction in cooling efficiency caused by an excessive temperature difference between the hot end and cold end of the cooler, and improve the cooling effect of the refrigeration equipment.

[0104] In some optional implementations of this embodiment, step 10202 can be performed as follows:

[0105] First, determine the current humidity of the space to be refrigerated by the refrigeration equipment, and obtain the preset reference humidity of the space.

[0106] The cooling space refers to the area targeted by the refrigeration equipment during cooling, such as the refrigerator compartment. The preset baseline humidity can be set manually beforehand. The current humidity can be the real-time humidity read from a hygrometer within the cooling space, or it can be calculated from multiple humidity values ​​read over a period of time (e.g., averaging multiple humidity values).

[0107] Then, determine the humidity difference between the current humidity and the preset reference humidity, and based on the correspondence between the humidity difference and the defrost interval time increment, determine the amount of reduction in the current defrost interval time.

[0108] Specifically, the relationship between humidity difference and defrost interval increment can be expressed through tables, calculation formulas, etc. When expressed through calculation formulas, algorithms such as PID and PI can be used to calculate the current reduction in defrost interval.

[0109] Taking the positional PI algorithm as an example, the defrosting time reduction (i.e., the time reduction compared to the initial defrosting time) is calculated at time t according to the following formula:

[0110]

[0111] ΔR(t)=Rv(t)-Rs (2)

[0112] Where Rv(t) is the current humidity, Rs is the preset baseline humidity, ΔR(t) is the humidity difference, Kp is the set proportional coefficient, Ti is the integration time, and t_sr(t) is the defrosting reduction time.

[0113] Take the increment value from time t to time t-1, and then perform digital discretization to obtain:

[0114]

[0115] The current reduction in defrosting interval is:

[0116] t_sr(t)=Δt_sr(t)+t_sr(t-1) (4)

[0117] Finally, based on the preset initial defrost interval time and the amount of reduction in the current defrost interval time, the current defrost interval time is determined.

[0118] Continuing with the example above, the current defrost interval time is obtained by subtracting the amount of reduction in the current defrost interval time from the initial defrost interval time, as shown in the following formula:

[0119] t_smax=t_smax(Original)-t_sr(t) (5)

[0120] Where t_smax is the current defrosting interval, and t_smax(Original) is the initial defrosting interval.

[0121] This embodiment collects the humidity of the cooling space and determines the current defrost interval based on the humidity value. This allows the defrost interval to be automatically shortened when the humidity in the cooling space is high, making the setting of the defrost interval more accurate and thus helping to improve the defrosting efficiency of the cold end of the refrigerator.

[0122] In some optional implementations of this embodiment, such as Figure 5 As shown, after step 10203, the method further includes:

[0123] Step 10206: If the continuous working time does not exceed the defrosting interval, find the target input current corresponding to the first temperature difference from the preset cooling efficiency table.

[0124] The target input current is the input current corresponding to the highest cooling efficiency of the refrigerator under the first temperature difference. For example... Figure 6 As shown, it illustrates the relationship between input current Iin and cooling efficiency COP when the first temperature difference is a certain fixed value. Under the target input current Ip, the cooling efficiency COP of the refrigerator is the highest.

[0125] If the continuous working time does not exceed the defrosting interval, there is no need to perform defrosting operation on the cold end of the refrigerator. Therefore, the optimal input current of the refrigerator can be set.

[0126] Step 10207: Determine the current cooling power of the refrigerator and determine whether the current cooling power meets the preset cooling power conditions.

[0127] The current cooling power can be determined based on the current input current. The cooling power condition is a prerequisite for the cooler to operate at the target input current. As an example, a cooling power threshold can be set. If the current cooling power is less than this threshold, it means that the cooling power is within the allowable range and the cooling efficiency will not decrease due to excessive cooling power. In this case, it can be determined that the cooling power condition is met.

[0128] If the cooling capacity requirements are met, proceed with step 10208.

[0129] Step 10208: Control the input current of the cooler to the target input current.

[0130] When the cooling power meets the cooling power requirements, the optimal input current is the target input current, at which point the cooler has the highest cooling efficiency.

[0131] Optionally, when the input current of the cooler exceeds the maximum allowable current, and / or the input voltage of the cooler exceeds the maximum allowable voltage, the input current of the cooler can be cut off, and the steps included in the method can be re-executed to reset the input current and input voltage.

[0132] This embodiment determines the cooling power of the refrigerator during the non-defrosting stage, enabling the refrigerator to operate at its highest cooling efficiency and thus achieving the best cooling effect.

[0133] In some optional implementations of this embodiment, such as Figure 5 As shown, after step 10207, if the cooling power requirement is not met, proceed to step 10209:

[0134] Step 10209: Find the maximum effective input current corresponding to the first temperature difference from the cooling efficiency table.

[0135] The maximum effective input current is the maximum input current that makes the cooling efficiency of the refrigerator within the target cooling efficiency range.

[0136] Specifically, when the cooling power does not meet the cooling power requirements, it indicates that the cooling power is too low or the heat leakage power is too high, and the cooling power needs to be increased by increasing the input current. However, if... Figure 6 As shown, excessive input current will reduce cooling efficiency. Therefore, when the first temperature difference is a certain value, the optimal input current can be found in the cooling efficiency table. This optimal input current is the maximum effective input current, which is a preset current that allows for higher cooling efficiency without excessively high input current.

[0137] Step 10210: Adjust the input current of the cooler to the maximum effective input current so as to increase the cooling power of the cooler.

[0138] like Figure 6 As shown, Icmax is the maximum effective input current. At this point, the cooling efficiency is higher, and the cooling power can also be increased.

[0139] This embodiment, by setting the maximum effective input current, can increase the cooling power when the current cooling power does not meet the cooling power conditions, while maintaining the cooling efficiency within an acceptable range, thereby helping to improve the cooling effect of the refrigeration equipment.

[0140] In some optional implementations of this embodiment, step 10207 can be performed as follows:

[0141] First, determine whether the current cooling power is greater than or equal to the preset heat leakage power and minimum cooling power.

[0142] Among them, the heat leakage power can be obtained through actual measurement after determining the performance parameters of the refrigeration equipment (such as the maximum difference between the temperature control range of the refrigerated space and the working ambient temperature).

[0143] In addition, to ensure the basic cooling function of the refrigerator, a minimum cooling power Qmin can be set.

[0144] Then, if the current cooling power is greater than or equal to the heat leakage power and the minimum cooling power, it is determined that the current cooling power meets the cooling power condition.

[0145] Specifically, in an ideal adiabatic system, the input current can be dynamically adjusted based on the first temperature difference of the cooler to keep it close to Ip, thus achieving maximum cooling efficiency. However, in real-world scenarios, a perfectly adiabatic system does not exist; there is always spontaneous heat transfer between the cold and hot ends, defined here as heat leakage power Qz. Qz is positively correlated with the first temperature difference and negatively correlated with the thermal resistance between the cold and hot ends. Therefore, to ensure basic heat exchange capacity, the cooling power corresponding to Ip must be greater than or equal to Qz. When the current cooling power Qc is greater than or equal to Qz and Qmin, the cooling power condition can be determined, and the cooler can be controlled to operate at the current Ip corresponding to the maximum cooling efficiency COP.

[0146] This embodiment sets the cooling power conditions by setting the heat leakage power and the minimum cooling power, which can ensure the cooling capacity of the refrigerator when it is working, and at the same time help to make the cooling efficiency of the refrigerator as high as possible, thereby improving the cooling effect of the refrigeration equipment.

[0147] In some optional implementations of this embodiment, the refrigeration device includes a heat exchanger, which includes a hot-end heat exchanger. The heat dissipation side temperature data includes a second hot-end temperature of the hot-end heat exchanger. The hot-end heat exchanger is used to exchange heat between the hot end of the refrigeration device and the outside environment, thereby achieving the purpose of cooling the hot end of the refrigeration device. The second hot-end temperature can be a temperature collected by a temperature sensor installed on the hot-end heat exchanger. Figure 7The diagram shows a schematic of a heat exchanger and a refrigerator. The hot-end heat exchanger 702 is in contact with the hot end of the refrigerator 701, dissipating the heat generated at the hot end of the refrigerator to the outside. Typically, the hot-end heat exchanger includes a radiator 7021 and a hot-end fan 7022. The radiator 7021 absorbs the heat generated at the hot end of the refrigerator, and the hot-end fan 7022 causes airflow around the hot-end heat exchanger, dissipating the heat to the outside.

[0148] like Figure 8 As shown, step 102 includes:

[0149] Step 10211: Collect the ambient temperature of the space where the refrigeration equipment is located.

[0150] The ambient temperature can be obtained by a temperature sensor installed in the space where the refrigeration equipment is located. For example, when the refrigeration equipment is installed on a refrigerator, a temperature sensor can be installed on the refrigerator body to collect the ambient temperature of the room where the refrigerator is placed.

[0151] Step 10212: Determine the start-up temperature of the hot-end heat exchanger based on the ambient temperature.

[0152] The relationship between ambient temperature and operating temperature can be represented by tables, calculation formulas, etc. For example, the ambient temperature can be divided into multiple ranges, with each range corresponding to the same operating temperature. For instance, if the ambient temperature is between 11℃ and 15℃, which is conducive to heat dissipation, the corresponding operating temperature can be 35℃; if the ambient temperature is between 16℃ and 20℃, which is unfavorable for heat dissipation, the corresponding operating temperature can be lowered to 30℃.

[0153] Step 10213: In response to determining that the second hot end temperature exceeds the start-up temperature, determine that the refrigeration equipment currently meets the refrigeration efficiency optimization conditions.

[0154] When the temperature of the second hot end exceeds the start-up temperature, it is necessary to enhance the heat dissipation function of the hot end heat exchanger. At this time, it is determined that the cooling efficiency optimization conditions are met, and the heat dissipation capacity is increased by means of subsequent methods such as turning on the hot end fan.

[0155] Optionally, if the temperature of the second hot end does not exceed the start-up temperature, the active heat exchange function of the hot end heat exchanger can be turned off (e.g., the hot end fan can be turned off), and the heat sink can be used for heat dissipation.

[0156] This embodiment collects the second hot end temperature of the hot end heat exchanger and the ambient temperature, and determines whether the cooling efficiency optimization conditions are met based on the ambient temperature. This helps to dynamically adjust the heat dissipation capacity of the hot end heat exchanger, which in turn helps to reduce the hot end temperature of the cooler when the ambient temperature is high, thereby improving the cooling efficiency of the cooler.

[0157] In some optional implementation manners of this embodiment, such as Figure 8 shown, the above step 103 includes:

[0158] Step 10304, determining the hot-end heat exchanger as the target control object.

[0159] Step 104 includes:

[0160] Step 10408, controlling the hot-end heat exchanger to perform active heat exchange so as to reduce the second hot-end temperature.

[0161] Optionally, the PI algorithm, PID algorithm, etc. can be used to control the operating power of the hot-end fan included in the hot-end heat exchanger, so as to reduce the second hot-end temperature to the target temperature, and the target temperature can be the above-mentioned starting temperature or other set temperatures.

[0162] In this embodiment, by controlling the hot-end heat exchanger to perform heat exchange when the second hot-end temperature exceeds the starting temperature, the hot-end temperature of the cooler can be timely reduced, thereby reducing the temperature difference between the hot and cold ends of the cooler and improving the refrigeration efficiency of the cooler.

[0163] In some optional implementation manners of this embodiment, step 10212 can be executed as follows:

[0164] First, determine the offset temperature corresponding to the ambient temperature preset.

[0165] As an example, let the ambient temperature be Te. If Te ≤ Te1, the offset temperature T_offset is a;

[0166] If Te1 < Te ≤ Te2, the offset temperature T_offset is b;

[0167] If Te2 < Te ≤ Te3, the offset temperature T_offset is c;

[0168] If Te > Te3, the offset temperature T_offset is d;

[0169] Wherein, Te1 < Te2 < Te3, and a > b > c > d > 0.

[0170] Then, determine the sum of the ambient temperature and the offset temperature as the starting temperature of the hot-end heat exchanger.

[0171] That is, the current starting temperature is Te + T_offset.

[0172] This embodiment allows setting an offset temperature corresponding to the ambient temperature, enabling the hot-end heat exchanger to be set at different ambient temperatures. This allows the hot-end heat exchanger to dissipate heat from the hot end of the cooler in a targeted manner based on the ambient temperature, thereby improving the cooling efficiency of the cooler. Furthermore, it eliminates the need to continuously activate the active heat exchange function of the hot-end heat exchanger, which helps reduce the power consumption of the refrigeration equipment.

[0173] In some optional implementations of this embodiment, the heat exchanger includes a cold-end heat exchanger, and the cooling-side temperature data includes a second cold-end temperature of the cold-end heat exchanger. The cold-end heat exchanger is used to exchange heat between the cold end of the refrigerator and the cooling space, thereby cooling the cooling space. The second cold-end temperature can be a temperature collected by a temperature sensor installed on the cold-end heat exchanger. Figure 7 As shown, the cold-end heat exchanger 703 is in contact with the cold end of the refrigerator 701, absorbing heat from the area surrounding the cold-end heat exchanger, thereby cooling the refrigeration space. Typically, the cold-end heat exchanger 703 includes a heat absorber 7031 and a cold-end fan 7032. The heat absorber 7031 absorbs heat from the refrigeration space, and the cold-end fan 7032 causes airflow around the cold-end heat exchanger, which helps to lower the surrounding temperature.

[0174] like Figure 9 As shown, step 102 also includes:

[0175] Step 10213: Collect the space temperature of the space targeted by the refrigeration equipment.

[0176] The temperature of this space can be the temperature collected by a temperature sensor installed in the cooling space.

[0177] Step 10214: Determine whether the second temperature difference between the space temperature and the second cold end temperature exceeds the third preset temperature difference.

[0178] Step 10215: If the temperature difference exceeds the third preset temperature difference, determine that the refrigeration equipment currently meets the conditions for optimizing refrigeration efficiency.

[0179] When the second temperature difference exceeds the third preset temperature difference, that is, there is a large temperature difference between the temperature in the refrigeration space and the temperature of the cold end heat exchanger, it is necessary to enhance the heat absorption capacity of the cold end heat exchanger to reduce the temperature in the refrigeration space as quickly as possible. At this point, it is determined that the refrigeration efficiency optimization conditions are met, and the heat absorption capacity is increased by subsequent methods such as turning on the cold end fan.

[0180] Optionally, if the second temperature difference does not exceed the third preset temperature difference, it means that the temperature difference between the temperature in the refrigeration space and the temperature of the cold end heat exchanger is small, or there is no temperature difference, or the temperature difference is negative. In this case, the active heat exchange function of the cold end heat exchanger can be turned off (e.g., the cold end fan can be turned off), and heat exchange can be carried out by the heat absorber.

[0181] This embodiment compares the second temperature difference with the third preset temperature difference and determines whether the refrigeration efficiency optimization conditions are met based on the comparison results. This helps to dynamically adjust the heat absorption capacity of the cold end heat exchanger, which in turn helps to enhance the heat exchange capacity between the cold end of the refrigeration unit and the cold end heat exchanger when the temperature of the refrigeration space is high. This avoids the cold end of the refrigeration unit from being too cold due to untimely heat exchange, as well as the risk of frost formation caused by excessively low temperatures, thereby helping to improve the refrigeration efficiency of the refrigeration unit.

[0182] In some optional implementations of this embodiment, such as Figure 9 As shown, step 103 above includes:

[0183] Step 10305: Determine the cold-end heat exchanger as the target control object.

[0184] Step 104 includes:

[0185] Step 10409: Based on the correspondence between the second temperature difference and the operating power of the cold-end heat exchanger, determine the current target operating power of the cold-end heat exchanger.

[0186] The operating power of a cold-end heat exchanger is the power consumed by the cold-end heat exchanger when it performs active heat exchange. For example, it can be the operating power of a cold-end fan.

[0187] The relationship between the second temperature difference and the operating power of the cold-end heat exchanger can be expressed through tables, calculation formulas, etc.

[0188] As an example, the third preset temperature difference can have multiple values, and multiple values ​​can determine multiple temperature ranges, with each temperature range corresponding to a certain operating power.

[0189] Let the temperature of the cooling space be Tb, the temperature of the second cold end be T_qcool, and the third preset temperature difference include Tx1 and Tx2.

[0190] If Tb-T_qcool≥Tx1, the target operating power is P1;

[0191] If Tx1 > Tb - T_qcool ≥ Tx2, the target operating power is P2;

[0192] If Tx2 > Tb - T_qcool > 0, the target operating power is P3;

[0193] Among them, Tx1>Tx2>0, P1>P2>P3.

[0194] Step 10410: Adjust the operating power of the cold-end heat exchanger to the target operating power.

[0195] Since cold-end heat exchangers typically perform active heat exchange via cold-end fans, the operating power of the cold-end heat exchanger can be adjusted by changing the duty cycle of the drive signals corresponding to P1, P2, and P3.

[0196] Optionally, if Tb-T_qcool≤0, the active heat exchange function of the cold end heat exchanger can be turned off.

[0197] This embodiment establishes a correspondence between the second temperature difference and the operating power of the cold-end heat exchanger. By determining the target operating power of the cold-end heat exchanger based on the real-time second temperature difference, the heat exchange capacity of the cold-end heat exchanger can be adjusted in a targeted manner. This keeps the temperature of the refrigerated space and the cold-end temperature of the refrigerator within a small temperature difference range, avoiding excessively low temperatures at the cold end of the refrigerator due to untimely heat exchange, as well as the risk of frost formation caused by excessively low temperatures. This, in turn, helps to improve the refrigeration efficiency of the refrigerator.

[0198] Optionally, when the ambient temperature of the refrigeration equipment is low, eliminating the need for cooling the space (i.e., when the input current to the refrigerator is turned off), the active heat exchange function of the cold-end heat exchanger can be disabled (e.g., the cold-end fan can be turned off). This keeps the cold end of the refrigerator at a low temperature, thus helping to reduce the refrigeration power required when the refrigeration function is restarted. Conversely, if the active heat exchange function of the hot-end heat exchanger is on (e.g., the hot-end fan is on), it can be disabled after a delay (e.g., 2 minutes). This avoids the cold-end temperature being pulled up by the hot end due to the immediate shutdown of the heat exchanger's active heat exchange function, which could cause temperature instability in the refrigerated space.

[0199] Figure 10 This is a schematic diagram of a refrigeration equipment control device provided in an embodiment of this application. Specifically, it includes: a data acquisition module 1001, used to acquire current cooling-side temperature data and heat dissipation-side temperature data of the refrigeration equipment; a first determination module 1002, used to determine whether the refrigeration equipment currently meets the refrigeration efficiency optimization conditions based on the cooling-side temperature data and the heat dissipation-side temperature data; a second determination module 1003, used to determine the target control object of the refrigeration equipment if the refrigeration efficiency optimization conditions are met; and a first adjustment module 1004, used to adjust the control parameters of the target control object based on the correspondence between the working state of the target control object and the refrigeration efficiency, so that the working state of the target control object is adjusted to the target state, wherein the target state of the target control object is used to improve the refrigeration efficiency of the refrigeration equipment.

[0200] In one possible implementation, the refrigeration device includes a cooler, the refrigeration-side temperature data includes a first cold-end temperature of the cooler, and the heat dissipation-side temperature data includes a first hot-end temperature of the cooler; and the first determining module 1002 includes: a first determining unit, used to determine a first temperature difference between the first hot-end temperature and the first cold-end temperature, and the continuous operating time of the cooler; a second determining unit, used to determine the current defrost interval time; a third determining unit, used to determine whether the first cold-end temperature is less than or equal to a preset defrost temperature, whether the continuous operating time exceeds the defrost interval time, and whether the first temperature difference exceeds the maximum allowable temperature difference; and a fourth determining unit, used to determine that the refrigeration device currently meets the refrigeration efficiency optimization conditions if the first cold-end temperature is less than or equal to the defrost temperature, the continuous operating time exceeds the defrost interval time, and the first temperature difference does not exceed the maximum allowable temperature difference.

[0201] In one possible implementation, the second determining module 1003 includes: a fifth determining unit, configured to determine that the input current of the cooler is the target control object; and the first adjusting module 1004 includes: a first cutting-off unit, configured to cut off the input current of the cooler to reduce the first temperature difference; a first control unit, configured to control the cooler to operate with rated reverse current to increase the first cold end temperature in response to determining that the first temperature difference is less than or equal to a first preset temperature difference; and a second cutting-off unit, configured to cut off the rated reverse current in response to the first cold end temperature reaching a preset defrost exit temperature, and set the continuous working time to an initial value and re-record the continuous working time.

[0202] In one possible implementation, the refrigeration equipment further includes a heat exchanger, which includes a cold-end heat exchanger and a hot-end heat exchanger; and the second determining module 1003 includes: a sixth determining unit, configured to determine the cold-end heat exchanger and the hot-end heat exchanger as target control objects; and the first adjusting module 1004 includes: a second control unit, configured to control the cold-end heat exchanger and the hot-end heat exchanger to stop operating in response to the refrigeration unit currently operating with rated reverse current, or the refrigeration unit currently having zero input current and having ended operating with rated reverse current; and a third control unit, configured to control the cold-end heat exchanger to stop operating and control the hot-end heat exchanger to continue operating in response to the refrigeration unit currently having zero input current and not operating with rated reverse current.

[0203] In one possible implementation, the apparatus further includes: a third determining module, configured to determine that the refrigeration equipment currently meets the refrigeration efficiency optimization conditions in response to determining that the first temperature difference is greater than or equal to a preset maximum allowable temperature difference; and a second determining module 1003 including: a seventh determining unit, configured to determine that the input current of the refrigerator is the target control object; and a first adjusting module 1004 including: a third cutting-off unit, configured to cut off the input current of the refrigerator to reduce the first temperature difference; and a recovery unit, configured to restore the input current in response to the first temperature difference decreasing to a second preset temperature difference.

[0204] In one possible implementation, the second determining unit includes: a first determining subunit, configured to determine the current humidity of the cooling space targeted by the refrigeration equipment, and obtain a preset reference humidity of the cooling space; a second determining subunit, configured to determine the humidity difference between the current humidity and the preset reference humidity, and determine the current defrost interval time reduction based on the correspondence between the humidity difference and the defrost interval time increment; and a third determining subunit, configured to determine the current defrost interval time based on a preset initial defrost interval time and the current defrost interval time reduction.

[0205] In one possible implementation, the device further includes: a first lookup module, configured to look up the target input current corresponding to the first temperature difference from a preset cooling efficiency table if the continuous working time does not exceed the defrosting interval, wherein the target input current is the input current corresponding to the highest cooling efficiency of the cooler under the first temperature difference; a fourth determination module, configured to determine the current cooling power of the cooler and determine whether the current cooling power meets the preset cooling power conditions; and a control module, configured to control the input current of the cooler to the target input current if the cooling power conditions are met.

[0206] In one possible implementation, the device further includes: a second lookup module, configured to look up the maximum effective input current corresponding to the first temperature difference from the cooling efficiency table if the current cooling power does not meet the cooling power conditions, wherein the maximum effective input current is the maximum input current that makes the cooling efficiency of the cooler within the target cooling efficiency range; and a second adjustment module, configured to adjust the input current of the cooler to the maximum effective input current so as to increase the cooling power of the cooler.

[0207] In one possible implementation, the fourth determining module includes: an eighth determining unit, configured to determine whether the current cooling power is greater than or equal to a preset heat leakage power and a minimum cooling power; and a ninth determining unit, configured to determine that the current cooling power meets the cooling power conditions if the current cooling power is greater than or equal to the heat leakage power and the minimum cooling power.

[0208] In one possible implementation, the refrigeration device includes a heat exchanger, which includes a hot-end heat exchanger, and the heat dissipation side temperature data includes a second hot-end temperature of the hot-end heat exchanger; and the first determining module 1002 includes: a first acquisition unit for acquiring the ambient temperature of the space where the refrigeration device is located; a tenth determining unit for determining the opening temperature of the hot-end heat exchanger based on the ambient temperature; and an eleventh determining unit for determining that the refrigeration device currently meets the refrigeration efficiency optimization conditions in response to determining that the second hot-end temperature exceeds the opening temperature.

[0209] In one possible implementation, the second determining module 1003 includes: a twelfth determining unit, used to determine the hot-end heat exchanger as the target control object; and the first adjusting module 1004 includes: a fourth control unit, used to control the hot-end heat exchanger to perform active heat exchange so as to reduce the temperature of the second hot end.

[0210] In one possible implementation, the tenth determining unit includes: a fourth determining subunit, used to determine a preset offset temperature corresponding to the ambient temperature; and a fifth determining subunit, used to determine the sum of the ambient temperature and the offset temperature as the opening temperature of the hot-end heat exchanger.

[0211] In one possible implementation, the heat exchanger includes a cold-end heat exchanger, and the refrigeration-side temperature data includes a second cold-end temperature of the cold-end heat exchanger; the first determining module 1002 further includes: a second acquisition unit for acquiring the space temperature of the refrigeration space targeted by the refrigeration equipment; a thirteenth determining unit for determining whether a second temperature difference between the space temperature and the second cold-end temperature exceeds a third preset temperature difference; and a fourteenth determining unit for determining that if the third preset temperature difference is exceeded, the refrigeration equipment currently meets the refrigeration efficiency optimization conditions.

[0212] In one possible implementation, the second determining module 1003 includes: a fifteenth determining unit, configured to determine the cold-end heat exchanger as the target control object; and the first adjusting module 1004 includes: a sixteenth determining unit, configured to determine the current target operating power of the cold-end heat exchanger based on the correspondence between the second temperature difference and the operating power of the cold-end heat exchanger; and an adjusting unit, configured to adjust the operating power of the cold-end heat exchanger to the target operating power.

[0213] The refrigeration equipment control device provided in this embodiment can be as follows: Figure 10 The refrigeration equipment control device shown can execute all the steps of the above-mentioned refrigeration equipment control methods, thereby achieving the technical effects of the above-mentioned refrigeration equipment control methods. For details, please refer to the above-mentioned descriptions. For the sake of brevity, further details are not provided here.

[0214] Figure 11This is a schematic diagram of the structure of an electrical device provided in an embodiment of this application. The electrical device can be various devices with refrigeration function, such as refrigerators, freezers, air conditioners, etc. Figure 11 The illustrated electrical device 1100 includes at least one processor 1101, a memory 1102, a cooling device 1104, and other user interfaces 1103. The various components in the electrical device 1100 are coupled together via a bus system 1105. It is understood that the bus system 1105 is used to implement communication between these components. In addition to a data bus, the bus system 1105 also includes a power bus, a control bus, and a status signal bus. However, for clarity, ... Figure 11 The general labeled all buses as Bus System 1105.

[0215] The refrigeration equipment 1104 may include devices such as a refrigerator and a heat exchanger. The refrigeration equipment 1104 can receive various control commands sent by the processor 1101 from the bus system 1105 to control the refrigerator, heat exchanger, and other devices to perform refrigeration operations.

[0216] User interface 1103 may include a display, keyboard, or clicking device (e.g., mouse, trackball, touchpad, or touchscreen).

[0217] It is understood that the memory 1102 in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1102 described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0218] In some implementations, memory 1102 stores elements, executable units or data structures, or subsets thereof, or extended sets thereof: operating system 11021 and application program 11022.

[0219] The operating system 11021 includes various system programs, such as a framework layer, a core library layer, and a driver layer, used to implement various basic business functions and handle hardware-based tasks. The application program 11022 includes various applications, such as a media player and a browser, used to implement various application functions. Programs implementing the methods of the embodiments of this application can be included in the application program 11022.

[0220] In this embodiment, by calling the program or instructions stored in memory 1102, specifically the program or instructions stored in application program 11022, processor 1101 executes the method steps provided in each method embodiment, such as: collecting current cooling-side temperature data and heat dissipation-side temperature data of the refrigeration device; determining whether the refrigeration device currently meets the refrigeration efficiency optimization conditions based on the cooling-side temperature data and heat dissipation-side temperature data; if it meets the refrigeration efficiency optimization conditions, determining the target control object of the refrigeration device; and adjusting the control parameters of the target control object based on the correspondence between the working state of the target control object and the refrigeration efficiency, so that the working state of the target control object is adjusted to the target state, wherein the target state of the target control object is used to improve the refrigeration efficiency of the refrigeration device.

[0221] The methods disclosed in the embodiments of this application can be applied to or implemented by processor 1101. Processor 1101 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 1101 or by instructions in the form of software. The processor 1101 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software units in the decoding processor. The software units may be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 1102. Processor 1101 reads the information in memory 1102 and, in conjunction with its hardware, completes the steps of the above method.

[0222] It is understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described above in this application, or combinations thereof.

[0223] For software implementation, the techniques described herein can be implemented by units that perform the functions described above. The software code can be stored in memory and executed by a processor. The memory can be implemented within the processor or external to the processor.

[0224] The electrical equipment provided in this embodiment can be as follows: Figure 8 The electrical equipment shown can execute all the steps of the above-described refrigeration equipment control methods, thereby achieving the technical effects of the above-described refrigeration equipment control methods. For details, please refer to the above descriptions. For the sake of brevity, further details are omitted here.

[0225] This application also provides a storage medium (computer-readable storage medium). This storage medium stores one or more programs. The storage medium may include volatile memory, such as random access memory; it may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid-state drive; and it may also include combinations of the above types of memory.

[0226] When one or more programs in the storage medium can be executed by one or more processors to implement the above-described cooling equipment control method executed on the power consumption side.

[0227] The aforementioned processor executes a program stored in the memory to implement the following steps of a refrigeration equipment control method executed on the power-consuming equipment side: acquiring current cooling-side temperature data and heat dissipation-side temperature data of the refrigeration equipment; determining whether the refrigeration equipment currently meets the refrigeration efficiency optimization conditions based on the cooling-side temperature data and heat dissipation-side temperature data; if it meets the refrigeration efficiency optimization conditions, determining the target control object of the refrigeration equipment; and adjusting the control parameters of the target control object based on the correspondence between the working state of the target control object and the refrigeration efficiency, so that the working state of the target control object is adjusted to the target state, wherein the target state of the target control object is used to improve the refrigeration efficiency of the refrigeration equipment.

[0228] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different circuits to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0229] The steps of the circuits or algorithms described in connection with the embodiments disclosed herein can be implemented in hardware, software modules executed by a processor, or a combination of both. The software modules can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art.

[0230] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The circuit steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of execution is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0231] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for controlling a refrigeration equipment, characterized in that, The method includes: Collect current temperature data on the cooling side and the heat dissipation side of the refrigeration equipment; Based on the cooling-side temperature data and the heat dissipation-side temperature data, determine whether the refrigeration equipment currently meets the conditions for optimizing refrigeration efficiency; If the refrigeration efficiency optimization conditions are met, the target control object of the refrigeration equipment is determined; Based on the correspondence between the working state of the target controlled object and the cooling efficiency, the control parameters of the target controlled object are adjusted so that the working state of the target controlled object is adjusted to the target state, wherein the target state of the target controlled object is used to improve the cooling efficiency of the refrigeration equipment. The refrigeration equipment includes a refrigerator, the refrigeration-side temperature data includes a first cold-end temperature of the refrigerator, and the heat dissipation-side temperature data includes a first hot-end temperature of the refrigerator; and The step of determining whether the refrigeration equipment currently meets the refrigeration efficiency optimization conditions based on the cooling-side temperature data and the heat dissipation-side temperature data includes: Determine the first temperature difference between the first hot end temperature and the first cold end temperature, and the continuous operating time of the refrigerator; Determine the current defrost interval; Determine whether the first cold end temperature is less than or equal to the preset defrost temperature, whether the continuous working time exceeds the defrost interval time, and whether the first temperature difference exceeds the maximum allowable temperature difference; If the first cold end temperature is less than or equal to the defrost temperature, and the continuous working time exceeds the defrost interval time, and the first temperature difference does not exceed the maximum allowable temperature difference, it is determined that the refrigeration equipment currently meets the refrigeration efficiency optimization conditions. After determining whether the first cold end temperature is less than or equal to the preset defrost temperature, and whether the continuous working time exceeds the defrost interval, the method further includes: If the continuous working time does not exceed the defrosting interval time, the target input current corresponding to the first temperature difference is found from the preset cooling efficiency table, wherein the target input current is the input current corresponding to the highest cooling efficiency of the refrigerator under the first temperature difference; Determine the current cooling power of the refrigerator, and determine whether the current cooling power meets the preset cooling power conditions; If the cooling power condition is met, control the input current of the cooler to the target input current; After determining whether the current cooling power meets the preset cooling power conditions, the method further includes: If the current cooling power does not meet the cooling power condition, find the maximum effective input current corresponding to the first temperature difference from the cooling efficiency table, wherein the maximum effective input current is the maximum input current that makes the cooling efficiency of the cooler within the target cooling efficiency range; The input current of the cooler is adjusted to the maximum effective input current so as to increase the cooling power of the cooler.

2. The method according to claim 1, characterized in that, The determination of the target control object of the refrigeration equipment includes: The input current of the cooler is determined to be the target controlled object; and Adjusting the control parameters of the target controlled object to adjust its operating state to the target state includes: Cut off the input current to the cooler to reduce the first temperature difference; In response to determining that the first temperature difference is less than or equal to a first preset temperature difference, the refrigerator is controlled to operate with a rated reverse current to increase the first cold end temperature; In response to the first cold end temperature reaching the preset defrost exit temperature, the rated reverse current is cut off, and the continuous working time is set to the initial value and the continuous working time is re-recorded.

3. The method according to claim 2, characterized in that, The refrigeration equipment also includes a heat exchanger, which includes a cold-end heat exchanger and a hot-end heat exchanger; as well as The determination of the target control object of the refrigeration equipment includes: The cold-end heat exchanger and the hot-end heat exchanger are identified as the target controlled objects; and Adjusting the control parameters of the target controlled object to adjust its operating state to the target state includes: In response to the refrigerator currently operating with the rated reverse current, or the refrigerator currently having zero input current and ending operation with the rated reverse current, the cold end heat exchanger and the hot end heat exchanger are controlled to stop operating. In response to the current input current of the cooler being zero and not operating at the rated reverse current, the cold-end heat exchanger is controlled to stop operating, while the hot-end heat exchanger is controlled to continue operating.

4. The method according to claim 1, characterized in that, After determining the first temperature difference between the first hot end temperature and the first cold end temperature, the method further includes: In response to determining that the first temperature difference is greater than or equal to a preset maximum allowable temperature difference, it is determined that the refrigeration equipment currently meets the refrigeration efficiency optimization conditions; and The determination of the target control object of the refrigeration equipment includes: The input current of the cooler is determined to be the target controlled object; and Adjusting the control parameters of the target controlled object to adjust its operating state to the target state includes: Cut off the input current to the cooler to reduce the first temperature difference; In response to the first temperature difference decreasing to a second preset temperature difference, the input current is restored.

5. The method according to claim 1, characterized in that, Determining the current defrosting interval includes: Determine the current humidity of the space to be refrigerated by the refrigeration equipment, and obtain the preset reference humidity of the space to be refrigerated; Determine the humidity difference between the current humidity and the preset reference humidity, and based on the correspondence between the humidity difference and the defrost interval time increment, determine the amount of reduction in the current defrost interval time; The current defrosting interval is determined based on the preset initial defrosting interval time and the amount of reduction in the current defrosting interval time.

6. The method according to claim 1, characterized in that, Determining whether the current cooling power meets the preset cooling power conditions includes: Determine whether the current cooling power is greater than or equal to the preset heat leakage power and minimum cooling power; If the current cooling power is greater than or equal to the heat leakage power and the minimum cooling power, then the current cooling power is determined to meet the cooling power condition.

7. The method according to any one of claims 1-6, characterized in that, The refrigeration equipment includes a heat exchanger, which includes a hot-end heat exchanger, and the heat dissipation side temperature data includes the second hot-end temperature of the hot-end heat exchanger. as well as The step of determining whether the refrigeration equipment currently meets the refrigeration efficiency optimization conditions based on the cooling-side temperature data and the heat dissipation-side temperature data includes: Collect the ambient temperature of the space where the refrigeration equipment is located; Based on the ambient temperature, determine the start-up temperature of the hot-end heat exchanger; In response to determining that the second hot end temperature exceeds the turn-on temperature, it is determined that the refrigeration equipment currently meets the refrigeration efficiency optimization conditions.

8. The method according to claim 7, characterized in that, The determination of the target control object of the refrigeration equipment includes: The hot-end heat exchanger is identified as the target controlled object; and Adjusting the control parameters of the target controlled object to adjust its operating state to the target state includes: The hot-end heat exchanger is controlled to perform active heat exchange, so as to reduce the temperature of the second hot end.

9. The method according to claim 8, characterized in that, Determining the start-up temperature of the hot-end heat exchanger based on the ambient temperature includes: Determine the preset offset temperature corresponding to the ambient temperature; The sum of the ambient temperature and the offset temperature is determined as the start-up temperature of the hot-end heat exchanger.

10. The method according to claim 8, characterized in that, The heat exchanger includes a cold-end heat exchanger, and the refrigeration-side temperature data includes the second cold-end temperature of the cold-end heat exchanger. The step of determining whether the refrigeration equipment currently meets the refrigeration efficiency optimization conditions based on the cooling-side temperature data and the heat dissipation-side temperature data further includes: Collect the temperature of the space targeted by the refrigeration equipment; Determine whether the second temperature difference between the space temperature and the second cold end temperature exceeds the third preset temperature difference; If the temperature difference exceeds the third preset temperature difference, it is determined that the refrigeration equipment currently meets the refrigeration efficiency optimization conditions.

11. The method according to claim 10, characterized in that, The determination of the target control object of the refrigeration equipment includes: The cold-end heat exchanger is identified as the target controlled object; and Adjusting the control parameters of the target controlled object to adjust its operating state to the target state includes: Based on the correspondence between the second temperature difference and the operating power of the cold-end heat exchanger, the current target operating power of the cold-end heat exchanger is determined; Adjust the operating power of the cold-end heat exchanger to the target operating power.

12. A control device for refrigeration equipment, characterized in that, The device includes: The data acquisition module is used to collect the current cooling-side temperature data and heat dissipation-side temperature data of the refrigeration equipment. The first determining module is used to determine whether the refrigeration equipment currently meets the refrigeration efficiency optimization conditions based on the refrigeration side temperature data and the heat dissipation side temperature data. The second determining module is used to determine the target control object of the refrigeration equipment if the refrigeration efficiency optimization conditions are met. The first adjustment module is used to adjust the control parameters of the target control object based on the correspondence between the working state and the cooling efficiency of the target control object, so that the working state of the target control object is adjusted to the target state, wherein the target state of the target control object is used to improve the cooling efficiency of the refrigeration equipment. The refrigeration equipment includes a refrigerator, the refrigeration-side temperature data includes a first cold-end temperature of the refrigerator, and the heat dissipation-side temperature data includes a first hot-end temperature of the refrigerator; and The step of determining whether the refrigeration equipment currently meets the refrigeration efficiency optimization conditions based on the cooling-side temperature data and the heat dissipation-side temperature data includes: Determine the first temperature difference between the first hot end temperature and the first cold end temperature, and the continuous operating time of the refrigerator; Determine the current defrost interval; Determine whether the first cold end temperature is less than or equal to the preset defrost temperature, whether the continuous working time exceeds the defrost interval time, and whether the first temperature difference exceeds the maximum allowable temperature difference; If the first cold end temperature is less than or equal to the defrost temperature, and the continuous working time exceeds the defrost interval time, and the first temperature difference does not exceed the maximum allowable temperature difference, it is determined that the refrigeration equipment currently meets the refrigeration efficiency optimization conditions. After determining whether the first cold end temperature is less than or equal to the preset defrost temperature, and whether the continuous working time exceeds the defrost interval, the method further includes: If the continuous working time does not exceed the defrosting interval time, the target input current corresponding to the first temperature difference is found from the preset cooling efficiency table, wherein the target input current is the input current corresponding to the highest cooling efficiency of the refrigerator under the first temperature difference; Determine the current cooling power of the refrigerator, and determine whether the current cooling power meets the preset cooling power conditions; If the cooling power condition is met, control the input current of the cooler to the target input current; After determining whether the current cooling power meets the preset cooling power conditions, the method further includes: If the current cooling power does not meet the cooling power condition, find the maximum effective input current corresponding to the first temperature difference from the cooling efficiency table, wherein the maximum effective input current is the maximum input current that makes the cooling efficiency of the cooler within the target cooling efficiency range; The input current of the cooler is adjusted to the maximum effective input current so as to increase the cooling power of the cooler.

13. An electrical appliance, characterized in that, include: Memory, used to store computer programs; A processor is configured to execute a computer program stored in the memory, wherein when the computer program is executed, it implements the method described in any one of claims 1-11. A refrigeration device is used to receive control parameters output by the processor and adjust the working state of the target controlled object to the target state.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method described in any one of claims 1-11.

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