Refrigerator peak shifting defrosting method and system

Abstract

The invention provides a refrigerator peak shifting defrosting method and system. The method comprises the steps that a refrigerator end reports remaining defrosting time to a cloud end; the cloud carries out calculation based on the remaining defrosting time in a preset time window before the electricity consumption peak section starts to generate an instruction; the cloud end issues an instruction to the refrigerator end, a control unit of the refrigerator end executes the instruction to schedule the defrosting process, and the instruction comprises a defrosting trigger instruction or a defrosting time delay parameter; the execution comprises the steps of immediately starting defrosting in response to a defrosting trigger instruction, or determining whether defrosting is carried out or not based on the defrosting condition after the defrosting delay time parameter is responded to continuous refrigeration operation and the defrosting delay time parameter is delayed. According to the application, through a dual regulation and control mechanism of threshold judgment and a time window, it is ensured that the defrosting process strictly avoids the power utilization peak section, and the power utilization load of the power utilization peak section is effectively reduced. On the premise that the basic refrigeration function of the refrigerator is not affected, off-peak defrosting is achieved, the operation efficiency of a power grid is improved, and the power utilization cost of a user is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerator defrosting, and more particularly to a refrigerator off-peak defrosting method and system. BACKGROUND

[0002] When the refrigerator is in normal refrigeration, the compressor is started and stopped as needed to maintain low temperature, and the overall power consumption is relatively stable. However, when entering the defrosting process, the built-in heater will be started to melt the frost layer on the evaporator, which requires additional consumption of a large amount of electric energy, resulting in a sudden increase in instantaneous power consumption to about 2 times the normal operating state.

[0003] With the continuous growth of social electricity demand, the power grid often faces a tight power supply situation during peak periods, and there is a risk of voltage instability or even local power cuts. During the off-peak period, there is a waste of idle power resources. Off-peak electricity use guides users to adjust their production or electricity use behavior. If the high-energy consumption operation of the refrigerator defrosting process is shifted from the peak period to the off-peak period, it not only relieves the pressure on the power grid during peak periods, but also reduces the electricity cost of users.

[0004] However, the traditional refrigerator defrosting is automatically triggered by a built-in timer or sensor, and the traditional refrigerator cannot determine the peak period of electricity use, so the defrosting time is relatively fixed and difficult to accurately match the off-peak period of the power grid. SUMMARY

[0005] To solve the above-mentioned problems that the existing refrigerator defrosting is automatically triggered by a built-in timer or sensor, and the traditional refrigerator cannot determine the peak period of electricity use, so the defrosting time is relatively fixed and difficult to accurately match the off-peak period of the power grid.

[0006] The first aspect of the present application provides a refrigerator off-peak defrosting method, comprising the steps of:

[0007] reporting the remaining defrosting time to the cloud end by the refrigerator end;

[0008] generating an instruction based on the remaining defrosting time within a preset time window before the electricity peak period by the cloud end;

[0009] issuing the instruction to the refrigerator end by the cloud end, and executing the instruction by the control unit of the refrigerator end to schedule the defrosting process, wherein the instruction includes a defrosting trigger instruction and a delayed defrosting time parameter;

[0010] the execution includes starting defrosting immediately in response to the defrosting trigger instruction, or deciding whether to defrost based on defrosting conditions after the delayed defrosting time parameter after continuously operating the refrigerator for the delayed defrosting time parameter in response to the delayed defrosting time parameter.

[0011] In a possible implementation manner, the step of generating an instruction based on the remaining defrosting time includes:

[0012] generate the defrost triggering instruction when the remaining defrost time is less than a first threshold value;

[0013] generate the defrost delaying time parameter when the remaining defrost time is greater than or equal to the first threshold value.

[0014] In an implementation, the defrost delaying time parameter is a time length from a current time to an end of a power peak segment.

[0015] The control unit suppresses defrosting during the defrost delaying time parameter.

[0016] In an implementation, the preset time window is a fixed time range before the start of the power peak segment, and the cloud periodically initiates the calculation within the preset time window.

[0017] In an implementation, the control unit receives the instruction during refrigeration and only allows the defrosting to interrupt the refrigeration when the defrost triggering instruction is received.

[0018] Another aspect of the present application provides a refrigerator off-peak defrosting system for implementing any of the above refrigerator off-peak defrosting methods, comprising:

[0019] a refrigerator configured to report a remaining defrost time;

[0020] a cloud configured to, within a preset time window before the start of a power peak segment, generate an instruction based on the remaining defrost time, and deliver the instruction;

[0021] and a control unit configured to execute the instruction to schedule a defrosting process;

[0022] The instruction includes a defrost triggering instruction or a defrost delaying time parameter. The control unit initiates defrosting in response to the defrost triggering instruction, or continues refrigeration for the defrost delaying time parameter and determines whether to defrost based on defrosting conditions in response to the defrost delaying time parameter.

[0023] In an implementation, the cloud includes a calculation module configured to:

[0024] generate the defrost triggering instruction when the remaining defrost time is less than a first threshold value;

[0025] generate the defrost delaying time parameter when the remaining defrost time is greater than or equal to the first threshold value.

[0026] In an implementation, the defrost delaying time parameter represents a time length from a current time to an end of a power peak segment.

[0027] The control unit comprises a suppression module configured to prevent the defrosting process from starting during the delay defrosting time parameter.

[0028] In an available implementation, the cloud comprises a time window module;

[0029] The time window module is configured to activate the calculation periodically at a fixed time range before the start of the power peak segment.

[0030] In an available implementation, the refrigerator end has a networking interface;

[0031] The networking interface is used to connect to the public power grid and obtain power peak and valley period information from the public power grid, and report to the cloud.

[0032] From the above, the present application provides a refrigerator off-peak defrosting method and system, through the double regulation mechanism of threshold judgment and time window design, to ensure that the defrosting process strictly avoids the power peak segment, effectively reducing the power load in the power peak segment. At the same time, through the networking interface, the peak and valley period information is obtained in real time, and the data accuracy of the system operation is ensured. The overall scheme realizes off-peak defrosting without affecting the basic refrigeration function of the refrigerator, improves the efficiency of power grid operation, and reduces the user's electricity cost. And the system is designed by modularization, has good scalability and maintainability, can adapt to different models of refrigerator and different peak and valley periods in different regions, and has wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0033] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0034] Figure 1 is a flow diagram of the refrigerator off-peak defrosting method shown by the embodiments of the present application;

[0035] Figure 2 is a structural diagram of the refrigerator off-peak defrosting system shown by the embodiments of the present application. DETAILED DESCRIPTION

[0036] Example implementations are now described with reference to the drawings. Example implementations can, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example implementations to those skilled in the art. The features, structures, or characteristics described can be combined in one or more implementations. In the following description, numerous specific details are provided, such as examples of programming, software modules, user selections, screens, menus, graphs, portions of code, and the like, to provide a thorough understanding of implementations of the claimed technology. One skilled in the relevant art will recognize, however, that the technology can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail in order to avoid obscuring aspects of the claimed technology.

[0037] Moreover, in the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like mean the orientation or positional relationship as shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0038] When the refrigerator is in normal refrigeration, the compressor is started and stopped as needed to maintain low temperature, and the overall power consumption is relatively stable. However, when entering the defrosting process, the built-in heater will be started to melt the frost layer on the evaporator, which requires additional consumption of a large amount of electric energy, resulting in a sudden increase in instantaneous power consumption to about 2 times the normal operating state. By guiding users to adjust production or power consumption behavior, if the high-energy consumption operation such as the defrosting process of the refrigerator is shifted from the peak period to the valley period, the peak pressure of the power grid is relieved, and the user's electricity cost is reduced. However, the traditional refrigerator defrosting is automatically triggered by the built-in timer or sensor, and the traditional refrigerator cannot determine the peak period of electricity consumption, so that the defrosting time is relatively fixed and difficult to accurately match the off-peak period of the power grid.

[0039] To solve the above problems, the present application provides a refrigerator off-peak defrosting method, as shown in Figure 1 The method comprises the following steps:

[0040] S100: The refrigerator end reports the remaining defrosting time to the cloud end.

[0041] The refrigerator end monitors and calculates the remaining defrosting time t of the refrigerator in real time through the built-in sensor and timer, and reports the data to the cloud server through the networking interface. Reporting the remaining defrosting time is the basic data for the cloud end to provide the defrosting state of the refrigerator.

[0042] S200: The cloud generates an instruction based on the remaining defrosting time within a preset time window before the start of the power consumption peak segment.

[0043] The cloud server receives the remaining defrosting time t reported by the refrigerator end within a preset time window, and calculates according to the value of t. If t is less than a certain preset value, a defrost trigger instruction Hs and a defrost delay time parameter are generated; if t is greater than or equal to the preset value, only the defrost delay time parameter is generated, wherein the defrost delay time parameter is the length of time t1 from the current time to the end of the power consumption peak segment.

[0044] In this step, the cloud completes the calculation within the preset time window to complete the scheduling decision before the power consumption peak segment, which can avoid defrosting during the power consumption peak segment.

[0045] S300: The cloud issues an instruction to the refrigerator end, and the control unit of the refrigerator end executes the instruction to schedule the defrosting process, wherein the instruction includes a defrost trigger instruction or a defrost delay time parameter.

[0046] The cloud server issues the generated instruction (Hs or t1) to the refrigerator end. After receiving the instruction, if it is Hs and t1 instruction, the defrosting process is immediately started, and the refrigeration operation is continued for t1; if it is only t1 instruction, after the refrigeration operation is continued for t1 time, it is decided whether to enter the defrosting process according to the defrosting condition.

[0047] S400: Execute including responding to defrost trigger instruction to start defrosting immediately, or responding to defrost delay time parameter to continue refrigeration operation for defrost delay time parameter, and then decide whether to defrost based on defrosting condition.

[0048] The control unit executes the corresponding operation according to the type of the received instruction. For Hs instruction, the current refrigeration process is immediately interrupted, defrosting is started, and after defrosting is completed, refrigeration is continued; for t1 instruction, the refrigeration state is maintained for t1 time, and then the defrosting condition is checked again, and if it is satisfied, defrosting is performed, otherwise refrigeration is continued.

[0049] Specifically, the refrigerator end can detect the frost thickness of the evaporator in real time through the built-in frost sensor, and calculate the remaining defrosting time through the built-in algorithm. The refrigerator end reports the remaining defrosting time to the cloud server at regular intervals. The cloud pre-stores power peak valley period information, such as the power consumption peak segment is 8:00-22:00, and sets the preset time window to 90min before the start of the power consumption peak segment, i.e. 6:30-8:00.

[0050] Within this time window, the cloud obtains the latest remaining defrosting time reported by the refrigerator end from the database every 10 minutes, performs calculation to generate an instruction. If a defrost trigger instruction is generated, it is issued to the refrigerator end; if a defrost delay time parameter is generated, it is also issued to the refrigerator end.

[0051] After the control unit receives the instruction, if it is a defrost triggering instruction, the power supply of the compressor and the fan is immediately cut off, the defrost heater is started, and defrosting is started; if it is a delayed defrost time parameter, the compressor and the fan are kept running, the refrigeration is continued, and the delay time is recorded, until the delay time ends, then the defrosting condition is checked again, if the defrosting condition is reached, the defrosting is started, otherwise the refrigeration is continued.

[0052] The defrosting time of the existing refrigerator is random, which may be performed in the power consumption peak period, increasing the power consumption load in the power consumption peak period. The cloud scheduling is used in the embodiments of the present application to shift the defrosting time to the peak period or the valley period, solving the problem of defrosting in the power consumption peak period. The power consumption cost of the user in the power consumption peak period is reduced; the power grid load in the power consumption peak period is reduced, the energy utilization efficiency is improved, and the temperature fluctuation in the refrigerator caused by defrosting in the power consumption peak period is avoided.

[0053] In some embodiments of the present application, continuing to refer to Figure 1 As shown in the figure, the step of calculating to generate an instruction based on the remaining defrosting time comprises:

[0054] S210: When the remaining defrosting time is less than the first threshold value, a defrost triggering instruction is generated.

[0055] It can be understood that the cloud server presets the first threshold value, when the received remaining defrosting time t is less than the threshold value, it is judged that the refrigerator needs to defrost as soon as possible to avoid starting in the power consumption peak period, therefore a defrost triggering instruction Hs is generated, after the defrosting is completed, the delayed defrosting time parameter is generated again.

[0056] S220: When the remaining defrosting time is greater than or equal to the first threshold value, a delayed defrosting time parameter is calculated and generated.

[0057] If t is greater than or equal to the first threshold value, the cloud server calculates the time length t1 from the current time to the end of the power consumption peak period as the delayed defrosting time parameter, to ensure that the refrigerator can defrost in the power consumption valley period.

[0058] The first threshold value is a pre-set time value, for example, it is set to 3 hours, to ensure that when the remaining defrosting time is less than 3 hours, the defrosting started before the power consumption peak period can be completed before the power consumption peak period starts.

[0059] The cloud computing module obtains the remaining defrosting time reported by the refrigerator side from the database, for example, 2 hours, and compares it with the first threshold value 3 hours, because 2 hours < 3 hours, a defrost triggering instruction is generated.

[0060] If the remaining defrosting time is 4 hours, that is, the remaining defrosting time ≥ 3 hours, the delayed defrosting time parameter is calculated. For example, the current time is 7:00, the power consumption peak period starts at 11:00, and the power consumption peak period ends at 15:00, the delayed defrosting time parameter is “the time length from 7:00 to the end of the power consumption peak period 15:00”, that is, 8 hours.

[0061] The embodiment realizes accurate instruction generation through threshold judgment, ensures that defrosting is completed before the power consumption peak or is delayed to the valley section, so that the refrigerator can defrost at the appropriate time, avoids the power consumption peak, ensures the refrigeration efficiency of the refrigerator, and avoids defrosting or unnecessary delay in the power consumption peak section.

[0062] In some embodiments of the present application, the delay defrosting time parameter is the length of time from the current time to the end of the power consumption peak section; and the control unit inhibits the defrosting process during the delay defrosting time parameter in the continuous refrigeration operation.

[0063] Specifically, the delay defrosting time parameter is calculated by the cloud computing module according to the current time and the end time of the power consumption peak section, and after the control unit receives the parameter, the “delay defrosting mode” is started, and the defrosting process is inhibited through software logic: for example, shielding the trigger signal of the frost sensor; or cutting off the power supply circuit of the defrosting heater to prohibit its start. During the delay defrosting time, the refrigerator keeps the compressor and the fan running to continuously refrigerate until the delay time ends.

[0064] In the embodiment, the delay time is determined through the delay defrosting time parameter, which ensures that defrosting is performed after the end of the power consumption peak section, and at the same time, the delay effect is ensured by inhibiting the defrosting process to avoid defrosting start during the delay period. Through accurate control of the delay time, defrosting is ensured to be performed in the valley section, further reducing the load in the power consumption peak section and avoiding power consumption in the power consumption peak section caused by defrosting during the delay period.

[0065] In some embodiments of the present application, the preset time window is a fixed time range before the start of the power consumption peak section, and the cloud periodically starts calculation in the preset time window.

[0066] For example, the preset time window is 90 min before the start of the power consumption peak section, for example, the power consumption peak section starts at 8:00, and the preset time window is 6:30-8:00, which is fixedly stored in the cloud time window module. At 6:30 every day, the cloud triggers the timer, and every fixed time, the calculation module is periodically activated. The calculation module will obtain the latest remaining defrosting time for calculation and instruction generation.

[0067] The embodiment ensures that the scheduling is performed before the power consumption peak through the fixed time window to avoid decision-making after the start of the power consumption peak section; periodic activation ensures that the calculation module can timely process the latest state of the refrigerator end, reduces invalid calculation of the cloud, and improves the timeliness of scheduling to avoid scheduling errors caused by changes in the state of the refrigerator.

[0068] In some embodiments of the present application, the control unit receives the instruction during the refrigeration operation, and allows the defrosting process to interrupt the refrigeration operation only when the defrosting trigger instruction is received.

[0069] When the refrigerator is in normal refrigeration, the control unit is in "refrigeration mode", and the compressor and the fan are continuously running. At this time, the control unit receives the instruction issued by the cloud. If the defrost trigger instruction is received, the control unit immediately executes the "defrost interruption logic": turn off the compressor power to stop the refrigeration cycle, turn off the fan, start the defrost heater, and interrupt the refrigeration operation. If the delay defrost time parameter is received, the control unit remains in "refrigeration mode" and does not perform any defrost operation. Even if the frost sensor detects that the frost thickness reaches the threshold value, the defrost request is shielded until the delay time ends.

[0070] The present embodiment specifies the instruction processing logic during refrigeration, ensuring that only the defrost trigger instruction can interrupt refrigeration and avoiding defrosting during the delay period. This further ensures the effect of peak-shifting electricity use, while reducing the number of refrigeration interruptions and avoiding temperature fluctuations caused by frequent interruptions, thereby improving food preservation.

[0071] Another aspect of the present application provides a refrigerator peak-shifting defrosting system for implementing the refrigerator peak-shifting defrosting method provided by any of the above embodiments. As shown in FIG. 1, the system includes a refrigerator end, a cloud end, and a control unit. Figure 2

[0072] The refrigerator end is configured to report the remaining defrosting time, providing a basis for cloud computing; the cloud end is configured to generate an instruction based on the remaining defrosting time within a preset time window before the electricity peak segment starts, and to precisely control the defrosting timing before the electricity peak segment through calculation; and the control unit is configured to execute the instruction to schedule the defrosting process and ensure that the defrosting process is scheduled according to the instruction.

[0073] Specifically, the refrigerator end reports the remaining frost time t to the cloud end in real time through a networking interface; the cloud end starts calculation 90 minutes before the electricity peak segment starts, generates a defrost trigger instruction or a delay defrost time parameter t1 according to the t value; and the control unit receives the instruction, and if it is a trigger instruction, it immediately starts defrosting, and if it is a delay parameter, it decides whether to defrost after t1 time of continuous refrigeration.

[0074] The present embodiment actively controls the defrosting timing before the electricity peak segment to avoid high energy consumption caused by defrosting during the electricity peak segment, and effectively reduces the electricity load during the electricity peak segment without affecting the basic refrigeration function of the refrigerator, thereby improving the efficiency of the power grid.

[0075] In some embodiments of the present application, the cloud computing module generates a defrost trigger instruction when the remaining defrosting time is less than a first threshold value, and generates a delay defrost time parameter when it is greater than or equal to the first threshold value.

[0076] The cloud computing module sets the first threshold value to 3 hours, generates a defrost trigger instruction when 0 < t < 3h, and generates a delay defrost time parameter when t ≥ 3h.

[0077] ​The embodiment realizes dynamic regulation of defrosting opportunity through threshold judgment, ensures that defrosting is preferentially completed when the remaining time is insufficient, avoids excessive frosting from affecting the refrigeration efficiency, and prolongs the refrigeration cycle through a delay parameter when the remaining time is sufficient. The defrosting demand and the electricity consumption period are balanced, and energy waste or refrigeration performance decline caused by improper defrosting opportunity is avoided. The system intelligently selects a defrosting strategy according to the remaining frosting time, ensures the defrosting effect, optimizes the electricity consumption period, and improves the overall energy efficiency.

[0078] In some embodiments of the present application, the defrosting time delay parameter represents the length of time from the current time to the end of the electricity consumption peak period; and the control unit suppression module prevents the defrosting process from starting.

[0079] After the cloud side issues the defrosting time delay parameter, the control unit suppression module blocks the defrosting trigger signal during the continuous refrigeration operation for the defrosting time delay parameter t1; and only when the defrosting time delay parameter t1 ends and the defrosting total time meets the requirement, the defrosting is allowed to start. Through the double control of the time parameter and the suppression module, it is ensured that the defrosting process does not start in the electricity consumption peak period, and the peak shifting target is strictly realized.

[0080] The system of the embodiment realizes the smooth transfer of electricity load by precise time control, ensures that the defrosting process completely avoids the electricity consumption peak period, and realizes the smooth transfer of electricity load. High energy consumption caused by defrosting in the electricity consumption peak period is prevented, and refrigeration efficiency fluctuations caused by interrupted defrosting are avoided.

[0081] In some embodiments of the present application, the cloud time window module periodically activates calculation before the start of the electricity consumption peak period.

[0082] The time window module can set 90 minutes as the fixed activation period, and periodically trigger the cloud calculation process every 10 minutes within 90 minutes before the start of the electricity consumption peak period to dynamically update the instructions.

[0083] The embodiment ensures that the system responds to the change of the remaining frosting time in real time through periodic calculation, and adjusts the defrosting strategy in a timely manner. The defrosting opportunity lag or advance problem caused by the fluctuation of the remaining time is overcome, and the dynamic response ability of the system is improved.

[0084] In some embodiments of the present application, the refrigerator side networking interface connects the public power grid to obtain the peak and valley period information and reports it to the cloud. The specific operation and implementation are as follows: the refrigerator side obtains the local peak and valley period data from the public power grid through the networking interface, and synchronously reports the information and the remaining frosting time to the cloud.

[0085] The embodiment can ensure that the cloud calculation is based on accurate peak and valley period information by connecting the public power grid, improve the accuracy of the instructions, avoid the defrosting opportunity deviation caused by the error of the peak and valley period information, guarantee the reliability of the system operation, realize the precise regulation of the defrosting strategy, and improve the overall operation efficiency.

[0086] According to the above-mentioned embodiment, the defrosting method and system of the refrigerator provided by the application realizes intelligent regulation and control of the defrosting process through the cooperative work of the refrigerator end, the cloud end and the control unit. When the system is running, the refrigerator end reports the remaining frosting time t and the peak-valley period information obtained from the public power grid in real time; the cloud end periodically starts calculation 90 minutes before the peak power consumption period, generates a defrosting trigger instruction or a delay parameter t1 according to the relationship between the t value and the length of the peak power consumption period; and the control unit executes the instruction to complete defrosting before the peak power consumption period or delays the defrosting to start after the end of the peak power consumption period.

[0087] The application ensures that the defrosting process strictly avoids the peak power consumption period and effectively reduces the power consumption load in the peak power consumption period through the dual regulation and control mechanism of threshold judgment and time window design. At the same time, the peak-valley period information is obtained in real time through the networking interface to ensure the data accuracy of the system operation. The overall scheme realizes peak-shifting defrosting, improves the power grid operation efficiency and reduces the user power consumption cost without affecting the basic refrigeration function of the refrigerator. Moreover, the system is designed in a modular manner, has good scalability and maintainability, can be adapted to different models of refrigerators and different peak-valley periods in different regions, and has a wide application prospect.

[0088] In the description of the present specification, the description referring to the terms "some embodiments", "examples", "specific examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0089] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their entire scope and equivalents.

Claims

1. A method of defrosting a refrigerator at off-peak times, characterized by, The method comprises the steps of: The refrigerator end reports the remaining defrosting time to the cloud end; The cloud end calculates based on the remaining defrosting time within a preset time window before the start of the power peak segment to generate an instruction; The cloud end issues the instruction to the refrigerator end, and the control unit of the refrigerator end executes the instruction to schedule the defrosting process, wherein the instruction comprises a defrosting trigger instruction and a delayed defrosting time parameter; The execution comprises starting defrosting immediately in response to the defrosting trigger instruction, or continuing to run the refrigeration for the delayed defrosting time parameter, and then deciding whether to defrost based on the defrosting condition.

2. The defrosting method of a refrigerator according to claim 1, characterized in that, The step of calculating based on the remaining defrosting time to generate an instruction comprises: When the remaining defrosting time is less than a first threshold, the defrosting trigger instruction is generated; When the remaining defrosting time is greater than or equal to the first threshold, the delayed defrosting time parameter is calculated and generated.

3. The defrosting method of the refrigerator according to claim 2, characterized in that, The delayed defrosting time parameter is the length of time from the current time to the end of the power peak segment; The control unit suppresses the defrosting process during the period of continuing to run the refrigeration for the delayed defrosting time parameter.

4. The defrosting method of a refrigerator according to claim 1, wherein The preset time window is a fixed time range before the start of the power peak segment, and the cloud end periodically starts the calculation within the preset time window.

5. The defrosting method of a refrigerator according to claim 1, wherein, The control unit receives the instruction during the refrigeration running period, and only allows the defrosting process to interrupt the refrigeration running when the defrosting trigger instruction is received.

6. A defrosting system for a refrigerator for implementing the defrosting method of a refrigerator according to any one of claims 1 to 5, characterized in that, It comprises: The refrigerator end is configured to report the remaining defrosting time; The cloud end is configured to calculate based on the remaining defrosting time within a preset time window before the start of the power peak segment to generate an instruction, and issue the instruction; And the control unit is configured to execute the instruction to schedule the defrosting process; Wherein, the instruction comprises: defrosting trigger instruction or delayed defrosting time parameter, the control unit starts defrosting immediately in response to the defrosting trigger instruction, or continues to run the refrigeration for the delayed defrosting time parameter, and then decides whether to defrost based on the defrosting condition.

7. The off-peak defrosting system for a refrigerator as claimed in claim 6, wherein The cloud end comprises a calculation module, and the calculation module is configured to: Generate the defrosting trigger instruction when the remaining defrosting time is less than a first threshold; Generate the delayed defrosting time parameter when the remaining defrosting time is greater than or equal to the first threshold.

8. The off-peak defrosting system for a refrigerator as claimed in claim 7, wherein The delayed defrosting time parameter represents the length of time from the current time to the end of the power peak segment; The control unit comprises a suppression module, and the suppression module is configured to prevent the defrosting process from starting during the period of continuing to run the refrigeration for the delayed defrosting time parameter.

9. The off-peak defrosting system for a refrigerator as claimed in claim 6, wherein The cloud end comprises a time window module; The time window module is configured to periodically activate the calculation within a fixed time range before the start of the power peak segment.

10. The off-peak defrosting system for a refrigerator as claimed in claim 6, wherein The refrigerator end has a networking interface; The networking interface is used to connect to the public power grid and obtain the power peak and valley period information from the public power grid, and report to the cloud end.

Images