Control method and device of refrigeration equipment and refrigeration equipment

Abstract

The invention discloses a control method and device of refrigeration equipment and the refrigeration equipment, and belongs to the technical field of power factor correction. The control method of the refrigeration equipment comprises the steps that a controller obtains input current collected by a current sensor in each PFC channel, switching time corresponding to the PFC channel collected by a timing device, channel temperature corresponding to the PFC channel collected by a temperature sensor and a load rate corresponding to a PFC circuit; the controller calculates a health score corresponding to each PFC channel based on the input current, the switching time and the channel temperature; and the controller controls a target PFC channel in the plurality of PFC channels to work based on the load rate and the health score corresponding to each PFC channel, and controls other PFC channels except the target PFC channel in the plurality of PFC channels to be closed. According to the control method of the refrigeration equipment, the service life of the channel is prolonged, the service life of the whole staggered PFC circuit is prolonged, and the reliability of the PFC circuit is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of power factor correction, and particularly relates to a control method and device of a refrigeration equipment and the refrigeration equipment. BACKGROUND

[0002] The interleaved PFC (Power Factor Correction) technology has been widely used in modern power electronic devices. It can effectively reduce the input current ripple, improve the power factor, and reduce the harmonic pollution to the power grid by interleaving the work of multiple PFC channels. The methods in the related art mostly only focus on the output power and current balance of the channels, or rotate the conduction according to the cumulative running time, which may cause some channels to be in harsh working conditions such as high load or high temperature for a long time, accelerating the aging and damage of these channels, thereby affecting the reliability and service life of the entire interleaved PFC circuit. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides a control method and device of a refrigeration equipment and the refrigeration equipment, which avoids some channels being in harsh working conditions such as high load or high temperature for a long time, prolongs the service life of the channels, and thus prolongs the service life of the entire interleaved PFC circuit and improves the reliability of the PFC circuit.

[0004] In a first aspect, the present application provides a control method of a refrigeration equipment, the refrigeration equipment comprising a controller and a PFC circuit connected to the controller, the PFC circuit comprising a plurality of PFC channels, the output ends of the plurality of PFC channels being used to access a load, each of the PFC channels being provided with a current sensor, a temperature sensor and a timing device; the controller is used to execute the following method:

[0005] The controller acquires the input current collected by the current sensor in each of the PFC channels, the switch time of the PFC channel collected by the timing device, the channel temperature of the PFC channel collected by the temperature sensor, and the load rate of the PFC circuit;

[0006] The controller calculates the health score of each of the PFC channels based on the input current, the switch time and the channel temperature;

[0007] The controller controls a target PFC channel in the plurality of PFC channels to work and controls other PFC channels in the plurality of PFC channels except the target PFC channel to be closed based on the load rate and the health score of each of the PFC channels.

[0008] According to the control method of the refrigeration equipment provided in the embodiment of the present application, the input current, the switching time and the channel temperature corresponding to the PFC channel are collected, the health score corresponding to each PFC channel is calculated, and then the target PFC channel is selected from the plurality of PFC channels according to the health score and the load rate corresponding to the PFC circuit, so that the channel operation priority can be determined according to the health state of each channel, and some channels are prevented from being in the harsh working conditions such as high load or high temperature for a long time, thereby prolonging the service life of the channel and the service life of the entire interleaved PFC circuit, and improving the reliability of the PFC circuit.

[0009] The control method of the refrigeration equipment according to an embodiment of the present application is based on the load rate and the health score corresponding to each PFC channel, and controls the target PFC channel in the plurality of PFC channels to work, and includes the following steps.

[0010] Based on the load rate, the target number of PFC channels that need to be controlled to be turned on is determined.

[0011] Based on the health score corresponding to each PFC channel, the target number of PFC channels with the highest health score are determined from the plurality of PFC channels as the target PFC channels, and the target PFC channels are controlled to work.

[0012] The control method of the refrigeration equipment according to an embodiment of the present application is based on the health score corresponding to each PFC channel, and determines the target number of PFC channels with the highest health score from the plurality of PFC channels as the target PFC channels, and includes the following steps.

[0013] In the case where the health score corresponding to each PFC channel is greater than or equal to the first health score threshold, based on the order from high to low of the health score, every target rotation period, the target number of PFC channels are determined from the plurality of PFC channels as the target PFC channels.

[0014] The control method of the refrigeration equipment according to an embodiment of the present application, after the controller controls the target PFC channel in the plurality of PFC channels to work based on the load rate and the health score corresponding to each PFC channel, the method further includes the following steps.

[0015] In the case where the health score corresponding to the first target PFC channel in the target PFC channels is greater than or equal to the second health score threshold and less than the first health score threshold, at least part of the load corresponding to the first target PFC channel is transferred to the first other PFC channel; the first other PFC channel is a PFC channel other than the first target PFC channel in the target PFC channels, and the health score of the PFC channel is greater than or equal to the first health score threshold, and the second health score threshold is less than the first health score threshold.

[0016] The control method of the refrigeration equipment according to an embodiment of the present application, the PFC circuit includes a plurality of standby PFC channels; after the controller controls the target PFC channel in the plurality of PFC channels to work based on the load rate and the health score corresponding to each PFC channel, the method further comprises:

[0017] In the case that the health score corresponding to a second target PFC channel in the target PFC channel is greater than or equal to a third health score threshold and less than a second health score threshold, the load corresponding to the second target PFC channel is transferred to a target standby PFC channel in the plurality of standby PFC channels, and the PFC channel is updated; the target standby PFC channel is the standby PFC channel with the highest health score in the plurality of standby PFC channels, and the health score corresponding to the target standby PFC channel is greater than or equal to the second health score threshold; the third health score threshold is less than the second health score threshold.

[0018] The control method of the refrigeration equipment according to an embodiment of the present application, after the controller controls the target PFC channel in the plurality of PFC channels to work based on the load rate and the health score corresponding to each PFC channel, the method further comprises:

[0019] In the case that the health score corresponding to a third target PFC channel in the target PFC channel is less than a third health score threshold, the third target PFC channel is controlled to be closed, the load corresponding to the third target PFC channel is transferred to a second other PFC channel, and the target PFC channel is updated; the second other PFC channel is a PFC channel with a health score greater than or equal to the third health score threshold in the target PFC channel except the third target PFC channel.

[0020] The control method of the refrigeration equipment according to an embodiment of the present application, after the controller controls the target PFC channel in the plurality of PFC channels to work based on the load rate and the health score corresponding to each PFC channel, the method further comprises:

[0021] In the case that the health score corresponding to a third target PFC channel in the target PFC channel is less than a third health score threshold, the phase of each PFC channel in the plurality of PFC channels except the third target PFC channel is adjusted.

[0022] The control method of the refrigeration equipment according to an embodiment of the present application, the health score corresponding to each PFC channel is calculated based on the input current, the switching time and the channel temperature, comprising:

[0023] obtain, based on the input current, the switching time, and the channel temperature, a health score corresponding to each PFC channel;

[0024] perform weighted summation processing on the input current, the switching time, the high-temperature operation duration, and the temperature difference value to obtain the health score corresponding to the PFC channel.

[0025] In a second aspect, the present application provides a control device of a refrigeration equipment, the refrigeration equipment comprising a controller and a PFC circuit connected to the controller, the PFC circuit comprising a plurality of PFC channels, output ends of the plurality of PFC channels being used to access a load, and each PFC channel being provided with a current sensor, a temperature sensor, and a timing device; the controller comprising:

[0026] a first processing module configured to cause the controller to obtain an input current collected by the current sensor in each PFC channel, a switching time of the PFC channel collected by the timing device, a channel temperature corresponding to the PFC channel collected by the temperature sensor, and a load rate corresponding to the PFC circuit;

[0027] a second processing module configured to cause the controller to calculate, based on the input current, the switching time, and the channel temperature, a health score corresponding to each PFC channel;

[0028] a third processing module configured to cause the controller to control a target PFC channel in the plurality of PFC channels to work and control other PFC channels in the plurality of PFC channels except the target PFC channel to be closed, based on the load rate and the health score corresponding to each PFC channel.

[0029] According to the control device of the refrigeration equipment provided by the embodiments of the present application, the input current, the switching time, and the channel temperature corresponding to each PFC channel are collected to calculate a health score corresponding to each PFC channel, so that a target PFC channel is selected to be turned on from the plurality of PFC channels according to the health score and the load rate corresponding to the PFC circuit, the running priority of each channel can be determined according to the health status of the channel, some channels are prevented from being in harsh working conditions such as high load or high temperature for a long time, the service life of the channel is prolonged, the service life of the entire interleaved PFC circuit is prolonged, and the reliability of the PFC circuit is improved.

[0030] In a third aspect, the present application provides a refrigeration equipment comprising:

[0031] a controller;

[0032] The PFC circuit comprises a plurality of PFC channels, and outputs of the plurality of PFC channels are connected to the load; each of the PFC channels is provided with a current sensor, a temperature sensor and a timing device, and the PFC circuit is connected to the controller.

[0033] The controller is configured to perform the control method of the refrigeration device according to the first aspect.

[0034] According to the refrigeration device provided in the embodiments of the present application, the input current, the switching time and the channel temperature of each PFC channel are collected, the health score of each PFC channel is calculated, and then the target PFC channel is selected from the plurality of PFC channels according to the health score and the load rate of the PFC circuit, so that the running priority of each channel can be determined according to the health status of each channel, some channels are prevented from being in harsh working conditions such as high load or high temperature for a long time, the service life of the channel is prolonged, the service life of the entire interleaved PFC circuit is prolonged, and the reliability of the PFC circuit is improved.

[0035] In a fourth aspect, the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the control method of the refrigeration device according to the first aspect.

[0036] In a fifth aspect, the present application provides a non-transitory computer readable storage medium, which stores a computer program, and the computer program is executable on a processor to implement the control method of the refrigeration device according to the first aspect.

[0037] In a sixth aspect, the present application provides a computer program product, comprising a computer program, and the computer program is executable on a processor to implement the control method of the refrigeration device according to the first aspect.

[0038] The one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0039] According to the refrigeration device provided in the embodiments of the present application, the input current, the switching time and the channel temperature of each PFC channel are collected, the health score of each PFC channel is calculated, and then the target PFC channel is selected from the plurality of PFC channels according to the health score and the load rate of the PFC circuit, so that the running priority of each channel can be determined according to the health status of each channel, some channels are prevented from being in harsh working conditions such as high load or high temperature for a long time, the service life of the channel is prolonged, the service life of the entire interleaved PFC circuit is prolonged, and the reliability of the PFC circuit is improved.

[0040] Further, the target number of PFC channels to be controlled to be turned on is determined according to the load rate of the corresponding PFC circuit, then the target number of PFC channels with the highest health scores among the plurality of PFC channels are determined as target PFC channels, and the target PFC channels are controlled to work, under the premise of ensuring the overall performance of the PFC circuit, the load is preferentially distributed to the channels with higher health scores, thereby avoiding some channels from being in harsh working conditions such as high load or high temperature for a long time, thereby prolonging the service life of the channels and improving the reliability of the entire PFC circuit.

[0041] Further, in the case that the health scores of all channels are high, the channels are operated in rotation according to the health scores from high to low, and the rotation period is dynamically adjusted, so as to ensure balanced work of the PFC channels and avoid fixed operation of some channels for a long time, thereby improving the service life of the PFC channels.

[0042] Further, in the case that the health score of the first target PFC channel is greater than or equal to the second health score threshold and less than the first health score threshold, at least part of the load corresponding to the first target PFC channel is redistributed to other healthy PFC channels, thereby prolonging the service life of the low-health-score channel.

[0043] Further, in the case that the health score of the third target PFC channel is less than the third health score threshold, the third target PFC channel is controlled to be closed, and the load corresponding to the third target PFC channel is entirely distributed to other healthy PFC channels, by monitoring the health score of the channel in real time, the faulty channel can be found in time, and load transfer measures can be taken in time, thereby avoiding further expansion of the fault, and improving the service life of the entire PFC circuit.

[0044] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0045] The above and / or additional aspects and advantages of the application will become apparent and be readily understood by considering the following detailed description, including the accompanying drawings, in which:

[0046] Figure 1 is one of the flow diagrams of the control method of the refrigeration equipment provided by the embodiments of the application;

[0047] Figure 2 is one of the principle diagrams of the control method of the refrigeration equipment provided by the embodiments of the application;

[0048] Figure 3 is the second principle diagram of the control method of the refrigeration equipment provided by the embodiments of the application;

[0049] Figure 4 FIG. 2 is a flowchart illustrating a control method of a refrigeration equipment according to an embodiment of the present application;

[0050] Figure 5 FIG. 3 is a structural diagram of a control device of a refrigeration equipment according to an embodiment of the present application;

[0051] Figure 6 FIG. 4 is a structural diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0053] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", and the like are generally of a kind, and are not limited in number. For example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the front and rear associated objects.

[0054] The control method of a refrigeration equipment, the control device of a refrigeration equipment, the electronic device, and the readable storage medium provided by the embodiments of the present application will be described in detail below with reference to the drawings, through specific embodiments and application scenarios.

[0055] The control method of a refrigeration equipment can be applied to a terminal, and can be specifically executed by hardware or software in the terminal.

[0056] The terminal includes, but is not limited to, a portable communication device such as a mobile phone or a tablet computer having a touch-sensitive surface (e.g., a touchscreen display and / or a touchpad). It should also be understood that in some embodiments, the terminal can not be a portable communication device, but a desktop computer having a touch-sensitive surface (e.g., a touchscreen display and / or a touchpad).

[0057] In each of the following embodiments, a terminal including a display and a touch-sensitive surface is described. However, it should be understood that the terminal can include one or more other physical user interface devices such as physical keyboards, mice, and joysticks.

[0058] The control method for a refrigeration device provided in this application embodiment can be executed by an electronic device or a functional module or entity in an electronic device that can implement the control method for the refrigeration device. The electronic devices mentioned in this application embodiment include, but are not limited to, mobile phones, tablets, computers, cameras, and wearable devices. The control method for a refrigeration device provided in this application embodiment will be described below using an electronic device as the execution subject as an example.

[0059] like Figure 1 As shown, the control method of the refrigeration equipment includes steps 110, 120 and 130.

[0060] It should be noted that the refrigeration equipment includes a controller and a PFC circuit.

[0061] The controller (Microcontroller Unit, MCU) is connected to the PFC circuit.

[0062] The PFC circuit includes multiple PFC channels, such as Figure 2 The topology of a three-way interleaved PFC circuit is illustrated. The three-way interleaved PFC circuit includes a rectifier bridge, PFC inductors (L1 to L3), insulated-gate bipolar transistors (IGBTs) (Q1 to Q3), fast recovery diodes (D1 to D3), filter capacitor C1, and current sampling resistors (R1 to R3).

[0063] Each PFC channel is equipped with a current sensor, a temperature sensor, and a timing device.

[0064] like Figure 3 As shown, an NTC thermistor can be placed on the heat sink near the IGBT. By measuring the change in the thermistor's resistance, the temperature corresponding to the IGBT can be calculated based on the characteristic curve between the thermistor's resistance and temperature.

[0065] The PFC channel can be set at the power input terminal to convert AC power to DC power and correct the power factor.

[0066] The outputs of multiple PFC channels are used to connect to the load.

[0067] The controller is used to execute the following methods:

[0068] Step 110: The controller acquires the input current collected by the current sensor in each PFC channel, the switching time of the corresponding PFC channel collected by the timing device, the channel temperature of the corresponding PFC channel collected by the temperature sensor, and the load rate of the corresponding PFC circuit.

[0069] In this step, the current sensor can include a current sampling resistor, the current sampling resistor can be arranged in each PFC channel, and through the current sampling resistor, the actual current corresponding to each PFC channel, i.e., the input current, can be obtained.

[0070] The PFC channel includes an IGBT, and the switching time corresponding to the PFC channel can include the turn-on time and the turn-off time corresponding to the IGBT, wherein the turn-on time is the time from when the IGBT receives a turn-on signal to when it completely enters a turn-on state, and the turn-off time is the time from when the IGBT receives a turn-off signal to when it completely enters a turn-off state.

[0071] The timing device can respectively collect the turn-on time and the turn-off time of the IGBT, and the sum of the turn-on time and the turn-off time of the IGBT can be determined as the switching time corresponding to the PFC channel.

[0072] The switching time can be recorded by monitoring the driving signal of the switching tube (IGBT).

[0073] The switching time of the IGBT can be counted through the PWM signal output by the controller, the switching time life of the IGBT is generally 106-108 times, the IGBT will generate a large switching loss in the process of turning on and turning off, and a long switching time will accelerate the aging of the device, thereby reducing the health of the device.

[0074] A temperature sensor can be arranged in the PFC channel, and the channel temperature corresponding to the PFC channel can be collected through the temperature sensor.

[0075] The load rate corresponding to the PFC circuit can be calculated based on the ratio between the actual current corresponding to the PFC circuit and the total maximum design current.

[0076] The load rate is used to represent the relationship between the load borne by the PFC circuit in actual operation and its design or rated bearing capacity.

[0077] In step 120, the controller calculates the health score corresponding to each PFC channel based on the input current, the switching time, and the channel temperature.

[0078] In this step, the greater the input current corresponding to the PFC channel, the greater the loss and heat generated, thereby reducing the health score of the PFC channel.

[0079] The switching tube in the PFC channel will generate a large switching loss in the process of turning on and turning off, and a long switching time will accelerate the aging of the device, thereby reducing the health score of the PFC channel.

[0080] In the case of frequent and large fluctuations in the channel temperature, thermal stress may be generated in the components, which may cause problems such as loosening of the solder joints of the components and material fatigue, thereby affecting the performance and reliability of the channel.

[0081] The health score corresponding to the PFC channel can be calculated based on the input current corresponding to the PFC channel, the switching time, and the channel temperature.

[0082] The health score corresponding to the PFC channel can have a value range of [0, 1], and the greater the value, the better the health status of the PFC channel.

[0083] In step 130, the controller controls a target PFC channel in the plurality of PFC channels to work and controls other PFC channels in the plurality of PFC channels other than the target PFC channel to be closed based on the load rate and the health score corresponding to each PFC channel.

[0084] In this step, the target PFC channel is the PFC channel that bears the load and is in the working state.

[0085] The number of PFC channels to be turned on can be determined based on the load rate corresponding to the PFC circuit, and then the target PFC channel is selected from the plurality of PFC channels according to the health score corresponding to each PFC channel.

[0086] The target PFC channel can include one or more PFC channels.

[0087] The target PFC channel can output stable DC voltage and DC current (i.e., target current).

[0088] In the case where the target PFC channel is determined from the plurality of PFC channels, the target PFC channel can be controlled to be turned on, and other PFC channels in the plurality of PFC channels other than the target PFC channel can be controlled to be closed.

[0089] The stable DC voltage and current output by the target PFC channel can provide reliable operating power for the whole machine load, and stable power supply helps the compressor to run smoothly and reduces performance degradation or failure caused by voltage fluctuations.

[0090] For example, the DC voltage and current output by the target PFC channel can provide stable operating power for the compressor or other electronic components (such as a fan motor), which can be customized based on user needs, and the present application is not limited in this regard.

[0091] According to the control method of the refrigeration equipment provided in the embodiment, the input current, the switching time and the channel temperature corresponding to the PFC channel are collected, the health score corresponding to each PFC channel is calculated, and then the target PFC channel is selected from the plurality of PFC channels according to the health score and the load rate corresponding to the PFC circuit, so as to determine the channel operation priority according to the health state of each channel, avoid some channels being in the harsh working conditions such as high load or high temperature for a long time, prolong the service life of the channel, and prolong the service life of the entire interleaved PFC circuit, thereby improving the reliability of the PFC circuit.

[0092] In some embodiments, step 130 can include:

[0093] determining a target number of PFC channels to be controlled to be turned on based on the load rate;

[0094] determining, based on the health scores corresponding to the PFC channels, a target number of PFC channels with the highest health scores from the plurality of PFC channels as target PFC channels, and controlling the target PFC channels to work.

[0095] In this embodiment, the target number of PFC channels to be controlled to be turned on can be determined based on the load that can be borne by the PFC channel, and then based on the load rate.

[0096] For example, in the case of a load rate < 30%, the target number can be determined to be 1, in the case of 30% ≤ load rate ≤ 60%, the target number can be determined to be 2, and in the case of a load rate > 60%, the target number can be determined to be 3.

[0097] The health scores corresponding to the plurality of PFC channels can be sorted in descending order, and then the first target number of PFC channels can be selected and determined as the target PFC channels, and the target PFC channels are controlled to be turned on.

[0098] The channels other than the target PFC channels in the plurality of PFC channels can be controlled to be turned off.

[0099] According to the control method of the refrigeration equipment provided in the embodiment, the target number of PFC channels to be controlled to be turned on is determined based on the load rate corresponding to the PFC circuit, and then the target number of PFC channels with the highest health scores from the plurality of PFC channels are determined as target PFC channels, and the target PFC channels are controlled to work, so as to preferentially distribute the load to the channels with higher health scores on the premise of ensuring the overall performance of the PFC circuit, thereby avoiding some channels being in the harsh working conditions such as high load or high temperature for a long time, prolonging the service life of the channel, and improving the reliability of the entire PFC circuit.

[0100] In some embodiments, determining, from the plurality of PFC channels, a target number of PFC channels with the highest health scores as target PFC channels, based on the health scores of the respective PFC channels, can include:

[0101] In a case where the health scores of the respective PFC channels are all greater than or equal to the first health score threshold, determining, from the plurality of PFC channels, a target number of PFC channels as target PFC channels, based on the order of the health scores from high to low, every target rotation period.

[0102] In this embodiment, the user can customize the first health score threshold based on actual needs, and the first health score threshold can be set to any value between 0 and 1, for example, the first health score threshold can be set to 0.7 or 0.8, or other values, which are not limited by the present application.

[0103] In a case where the health scores of the respective PFC channels are all greater than or equal to the first health score threshold, it can be determined that the respective PFC channels are all in a healthy state, and the rotation working mode can be started.

[0104] The initial rotation period can be set, for example, 10 minutes, and then the period can be dynamically adjusted according to the load rate, and the period can be dynamically adjusted according to the standard deviation of the health scores of the plurality of PFC channels, for example, in a case where the load rate is high, the rotation period can be shortened, and in a case where the standard deviation of the health scores is small, the rotation period can be lengthened to reduce the switching frequency.

[0105] The channel queue can be constructed based on the order of the health scores from high to low, and at the end of the current period, the current running channel can be moved to the end of the queue and the queue can be reordered, for example, in a case where the target number is 1 and the target PFC channel is the Nth PFC channel in the queue, at the end of the current period, channel N can be moved to the end of the queue, the N+1th channel can be controlled to be turned on, the load corresponding to channel N can be transferred to the N+1th channel, channel N can be controlled to be turned off, and the queue can be reordered.

[0106] According to the control method of the refrigeration equipment provided in the embodiments of the present application, in a case where the health scores of all channels are high, the channels are rotated and operated according to the health scores from high to low, and the rotation period is dynamically adjusted, which can ensure that the respective PFC channels are balanced, and avoids that some channels are fixedly operated for a long time, thereby improving the service life of the respective PFC channels.

[0107] In some embodiments, after step 130, the method can further include:

[0108] In a case where the health score corresponding to the first target PFC channel is greater than or equal to the second health score threshold and less than the first health score threshold, at least part of the load corresponding to the first target PFC channel is transferred to the first other PFC channel.

[0109] In this embodiment, the second health score threshold is less than the first health score threshold, and the second health score threshold can be 0.4 or 0.5, or can also be other values, which are not limited in the present application.

[0110] The first target PFC channel is a PFC channel in the target PFC channel, the health score of which is greater than or equal to the second health score threshold and less than the first health score threshold.

[0111] The first other PFC channel is a PFC channel in the target PFC channel, the health score of which is greater than or equal to the first health score threshold, except for the first target PFC channel.

[0112] For example, the first health score threshold can be set to 0.7, and the second health score threshold can be set to 0.4, and in a case where the health score H corresponding to the first target PFC channel satisfies 0.4≤H<0.7, part of the load can be transferred to the other healthy PFC channel that is turned on by adjusting the duty cycle of PWM.

[0113] For example, the current stress can be reduced by reducing the PWM duty cycle of the first target PFC channel (such as from 100% to 70%), and the reduced load can be proportionally distributed to other healthy PFC channels, and in the process of load redistribution, the PFC channel with the highest health score can be preferentially selected.

[0114] According to the control method of the refrigeration equipment provided in the embodiments of the present application, in a case where the health score corresponding to the first target PFC channel is greater than or equal to the second health score threshold and less than the first health score threshold, at least part of the load corresponding to the first target PFC channel is redistributed to other healthy PFC channels, which can prolong the service life of the low-health-score channel.

[0115] In some embodiments, after step 130, the method can further include:

[0116] In a case where the health score corresponding to the second target PFC channel in the target PFC channel is greater than or equal to the third health score threshold and less than the second health score threshold, the load corresponding to the second target PFC channel is transferred to the target standby PFC channel in the plurality of standby PFC channels, and the PFC channel is updated.

[0117] In this embodiment, the PFC circuit includes multiple backup PFC channels. The backup PFC channels may include the remaining PFC channels other than the target PFC channel, that is, the PFC channels that are in the off state.

[0118] If the health score corresponding to the second target PFC channel is greater than or equal to the third health score threshold, but less than the second health score threshold, the backup channel can be activated, and then the load corresponding to the second target PFC channel can be transferred to the target backup PFC channel.

[0119] The target backup PFC channel is the backup PFC channel with the highest health score among multiple backup PFC channels, whose health score is greater than or equal to the second health score threshold.

[0120] The third health score threshold is less than the second health score threshold. The third health score threshold can be 0.2 or 0.3, or other values, which are not limited in this application.

[0121] The second target PFC channel can be removed from the target PFC channel to update the target PFC channel.

[0122] For example, a second health score threshold can be set to 0.4 and a third health score threshold can be set to 0.2. When the health score corresponding to the second target PFC channel is found to be 0.2≤H<0.4, a backup channel can be started to transfer the load of the second target PFC channel to the backup channel. The backup channel will preferentially select the PFC channel with the highest health score.

[0123] like Figure 4 As shown, in some embodiments, after step 130, the method may further include:

[0124] If the health score of the third target PFC channel is less than the third health score threshold, the third target PFC channel is shut down, the load corresponding to the third target PFC channel is transferred to the second other PFC channel, and the target PFC channel is updated.

[0125] In this embodiment, the second other PFC channel is a PFC channel other than the third target PFC channel, whose health score is greater than or equal to the third health score threshold.

[0126] You can select the channel with the highest capacity redundancy from the healthy channel pool (e.g., you can prioritize channels with a load rate of <50%) and use them as the second other PFC channels.

[0127] In a case where the health score corresponding to the third target PFC channel is less than the third health score threshold, the third target PFC channel can be marked as a high-risk channel, and the third target PFC channel is immediately closed, and all loads corresponding to the third target PFC channel are distributed to other healthy PFC channels.

[0128] The prompt information (such as a fault alarm signal) can be output to remind the maintenance personnel to perform maintenance.

[0129] The third target PFC channel can be removed from the target PFC channels to update the target PFC channels.

[0130] According to the control method of the refrigeration equipment provided in the embodiments of the present application, in a case where the health score corresponding to the third target PFC channel is less than the third health score threshold, the third target PFC channel is controlled to be closed, and all loads corresponding to the third target PFC channel are distributed to other healthy PFC channels, the health score of the channel is monitored in real time, the fault channel can be found in time, and the load transfer measure is taken in time, so that the further expansion of the fault is avoided, and the service life of the overall PFC circuit is improved.

[0131] In some embodiments, after step 130, the method can further include:

[0132] In a case where the health score corresponding to the third target PFC channel in the target PFC channels is less than the third health score threshold, the phases of the PFC channels other than the third target PFC channel in the plurality of PFC channels are adjusted.

[0133] In this embodiment, in a case where it is determined that the third target PFC channel fails, the third target PFC channel can be isolated.

[0134] The remaining channels can optimize the system performance through automatic phase adjustment.

[0135] For example, in a case where the number of remaining channels is greater than or equal to 2, the phases can be redistributed according to a preset phase difference (such as 180°);

[0136] A dynamic phase distribution algorithm can be used to make the remaining channels uniformly distribute the phases, for example, in a case where the PFC circuit changes from three paths to two paths, the phase difference between the PFC channels can be adjusted from 120° to 180°.

[0137] According to the control method of the refrigeration equipment provided in the embodiments of the present application, the high-risk channel is isolated in time, and the phase of the remaining channel is automatically adjusted, so that the local overheating is avoided, the device life is prolonged, the life balance of the multi-channel PFC circuit is realized, and the phases of the PFC channels are controlled to be staggered, so that the ripples of the low-efficiency output current are reduced, the filtering demand is reduced, and the quality of the output signal is improved.

[0138] In some embodiments, the method may further include:

[0139] If a first number of PFC channels have health scores that are all less than the fourth health score threshold, the maximum allowable current for each PFC channel is reduced.

[0140] In this embodiment, the value of the fourth health score threshold can be user-defined. For example, the fourth health score threshold can be 0.2, 0.3 or 0.4, or other values. This application does not limit this value.

[0141] The first quantity can be user-defined and can be the same as or similar to the quantity corresponding to multiple PFC channels; this application does not impose any restrictions.

[0142] If the number of healthy channels is insufficient, or if the health score of some channels is low, the maximum allowable current of each channel can be reduced.

[0143] For example, the new maximum allowable current for a channel can be determined by multiplying the rated current and the health score.

[0144] In this application, when the number of healthy channels is insufficient or the health score of some channels is low, the maximum allowable current of each channel can be reduced to avoid system crashes caused by hardware failures, thereby extending the lifespan of the device.

[0145] like Figure 4 As shown, in some embodiments, step 120 may include:

[0146] Based on the channel temperature, the high-temperature operation time of the PFC channel under the first temperature condition is obtained, as well as the temperature difference between the maximum and minimum channel temperatures of the PFC channel within the target time period.

[0147] The health score of the PFC channel is obtained by weighted summation of input current, switching time, high-temperature operation time and temperature difference.

[0148] In this embodiment, the first temperature condition is that the channel temperature is greater than a first temperature threshold. The value of the first temperature threshold can be user-defined. For example, the first temperature threshold can be 80°C, or it can be other values. This application does not limit it.

[0149] The target time period can be set to 10 minutes. For example, the highest and lowest channel temperatures of the PFC channel can be monitored within 10 minutes, and then the temperature difference between the highest and lowest channel temperatures can be obtained.

[0150] The high-temperature running duration of the PFC channel can be obtained by a temperature sensor and a timing device, for example, the running duration of the PFC channel corresponding to a temperature greater than 80 DEG C can be obtained.

[0151] The greater the ratio between the high-temperature running duration of the PFC channel and the total running duration, the lower the health score corresponding to the PFC channel.

[0152] The weights corresponding to the input current, the switching time, the high-temperature running duration and the temperature difference can be set based on actual needs, for example, the weights can be set based on the load and the environmental conditions, for example, in a high-temperature environment, the time coefficient of the high-temperature running duration and the temperature fluctuation coefficient can be appropriately increased.

[0153] In actual execution, the health score corresponding to the PFC channel can be calculated based on the following formula:

[0154]

[0155] Wherein, H is the health score corresponding to the target channel, I X is the input current corresponding to the target channel, I rated is the design maximum current corresponding to the target channel, ω1 is the weight corresponding to the input current, T switch is the switching time corresponding to the target channel, T max is the design maximum switching time corresponding to the target channel, ω2 is the weight corresponding to the switching time, T high is the high-temperature running duration corresponding to the target channel, T total is the total running duration corresponding to the target channel, ω3 is the weight corresponding to the high-temperature running duration, ΔT is the temperature difference corresponding to the target channel, ΔT max is the preset maximum temperature fluctuation corresponding to the target channel, ω4 is the weight corresponding to the temperature difference.

[0156] Wherein, ω1+ω2+ω3+ω4=1.

[0157] According to the control method of the refrigeration equipment provided in the embodiments of the present application, the health score corresponding to the PFC channel is calculated by considering the input current, the switching time, the high-temperature running duration and the temperature difference of the PFC channel, which improves the accuracy of the health score evaluation, thereby prolonging the overall service life of the PFC circuit.

[0158] The control device of the refrigeration equipment provided in the present application is described below, and the control device of the refrigeration equipment described below can be mutually corresponding to the control method of the refrigeration equipment described above.

[0159] The control method for refrigeration equipment provided in this application can be executed by a control device for the refrigeration equipment. This application uses the example of a control device for the refrigeration equipment executing the control method to illustrate the control device for the refrigeration equipment provided in this application.

[0160] This application also provides a control device for a refrigeration equipment.

[0161] like Figure 5 As shown, the control device of the refrigeration equipment includes a controller and a PFC circuit connected to the controller. The PFC circuit includes multiple PFC channels, the output terminals of which are used to connect to the load. Each PFC channel is equipped with a current sensor, a temperature sensor and a timing device. The controller includes a first processing module 510, a second processing module 520, a third processing module 530 and a fourth processing module 540.

[0162] The first processing module 510 is used to enable the controller to acquire the input current collected by the current sensor in each PFC channel, the switching time of the PFC channel collected by the timing device, the channel temperature of the PFC channel collected by the temperature sensor, and the load rate of the PFC circuit.

[0163] The second processing module 520 is used to enable the controller to calculate the health score corresponding to each PFC channel based on the input current, switching time and channel temperature.

[0164] The third processing module 530 is used to enable the controller to control the target PFC channel among multiple PFC channels to work based on the load rate and the health score corresponding to each PFC channel, and to control the other PFC channels among multiple PFC channels to shut down except for the target PFC channel.

[0165] According to the control device of the refrigeration equipment provided in the embodiments of this application, by collecting the input current, switching time and channel temperature corresponding to the PFC channel, the health score corresponding to each PFC channel is calculated. Based on the health score and the load rate corresponding to the PFC circuit, the target PFC channel is selected to be turned on from multiple PFC channels. The channel operation priority can be determined according to the health status of each channel, avoiding some channels from being under harsh working conditions such as high load or high temperature for a long time, thus extending the service life of the channel and extending the service life of the entire interleaved PFC circuit, and improving the reliability of the PFC circuit.

[0166] In some embodiments, the third processing module 530 can also be used for:

[0167] Based on the load rate, determine the target number of PFC channels that need to be controlled and opened;

[0168] Determine, from the plurality of PFC channels, a target number of PFC channels with the highest health scores as target PFC channels based on the health scores of the PFC channels, and control the target PFC channels to work.

[0169] In some embodiments, the third processing module 530 can also be configured to:

[0170] In a case where the health scores of the PFC channels are all greater than or equal to the first health score threshold, determine, from the plurality of PFC channels, a target number of PFC channels as target PFC channels based on the order of the health scores from high to low, and control the target PFC channels to work every target rotation period.

[0171] In some embodiments, the control device of the refrigeration equipment can further include a fourth processing module configured to, after the controller controls the target PFC channels to work based on the load rate and the health scores of the PFC channels, in a case where the health score of a first target PFC channel is greater than or equal to a second health score threshold and less than the first health score threshold, transfer at least part of the load corresponding to the first target PFC channel to a first other PFC channel; the first other PFC channel is a PFC channel other than the first target PFC channel in the target PFC channels and has a health score greater than or equal to the first health score threshold, and the second health score threshold is less than the first health score threshold.

[0172] In some embodiments, the PFC circuit includes a plurality of backup PFC channels; and the control device of the refrigeration equipment can further include a fifth processing module configured to, after the controller controls the target PFC channels to work based on the load rate and the health scores of the PFC channels, in a case where the health score of a second target PFC channel is greater than or equal to a third health score threshold and less than a second health score threshold, transfer the load corresponding to the second target PFC channel to a target backup PFC channel in the plurality of backup PFC channels and update the PFC channels; the target backup PFC channel is a backup PFC channel with the highest health score in the plurality of backup PFC channels and has a health score greater than or equal to the second health score threshold; and the third health score threshold is less than the second health score threshold.

[0173] In some embodiments, the control device of the refrigeration equipment can further include a sixth processing module configured to, after the controller controls the target PFC channel in the plurality of PFC channels to work based on the load rate and the health score corresponding to each PFC channel, in a case where the health score corresponding to a third target PFC channel in the target PFC channel is less than a third health score threshold, control the third target PFC channel to be closed, transfer the load corresponding to the third target PFC channel to a second other PFC channel, and update the target PFC channel; the second other PFC channel is a PFC channel other than the third target PFC channel in the target PFC channel and having a health score greater than or equal to the third health score threshold.

[0174] In some embodiments, the control device of the refrigeration equipment can further include a seventh processing module configured to, after the controller controls the target PFC channel in the plurality of PFC channels to work based on the load rate and the health score corresponding to each PFC channel, in a case where the health score corresponding to a third target PFC channel in the target PFC channel is less than a third health score threshold, adjust the phase of each PFC channel other than the third target PFC channel in the plurality of PFC channels.

[0175] In some embodiments, the second processing module 520 can be further configured to:

[0176] based on the channel temperature, obtain a high-temperature running duration of the PFC channel under a first temperature condition, and a temperature difference between a maximum value and a minimum value of the channel temperature of the PFC channel within a target period; the first temperature condition is that the channel temperature is greater than a first temperature threshold;

[0177] perform weighted sum processing on the input current, the switching time, the high-temperature running duration, and the temperature difference to obtain the health score corresponding to the PFC channel.

[0178] The control device of the refrigeration equipment in the embodiments of the present applicationapplicationbe an electronic device, or a component in an electronic device, such as an integrated circuit or a chip. The electronic deviceapplicationbe a terminal or another device other than a terminal. For example, the electronic deviceapplicationbe a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a Mobile Internet Device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), and can also be a server, a Network Attached Storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, and the like, and the embodiments of the present application are not limited in this regard.

[0179] The control device of the refrigeration equipment in the embodiments of the present applicationapplicationbe a device having an operating system. The operating systemapplicationbe an Android operating system, an IOS operating system, or another possible operating system, and the embodiments of the present application are not limited in this regard.

[0180] The control device of the refrigeration equipment provided in the embodiments of the present applicationapplicationimplement the method embodiments, and each process of the method embodimentsapplicationbe implemented by the control device of the refrigeration equipment, and thus repeated descriptions are not given herein. Figures 1 to 4 The method embodimentsapplicationimplement each process, and thus repeated descriptions are not given herein.

[0181] In some embodiments, as shown in Figure 6 The embodiments of the present application further provide an electronic device 600, which includes a processor 601, a memory 602, and a computer program stored in the memory 602 and capable of running on the processor 601. The computer program is executed by the processor 901 to implement each process of the control method of the refrigeration equipment, and thus achieves the same technical effects. Repeated descriptions are not given herein.

[0182] It should be noted that the electronic device in the embodiments of the present applicationapplicationinclude the mobile electronic device and the non-mobile electronic device.

[0183] In some embodiments, the embodiments of the present application further provide a refrigeration equipment, which includes a controller and a PFC circuit.

[0184] In this embodiment, the controller is connected with the PFC circuit.

[0185] The PFC circuit comprises a plurality of PFC channels.

[0186] The current sensor, the temperature sensor and the timing device are arranged correspondingly to each channel.

[0187] The output ends of the plurality of PFC channels are connected to a load, which can comprise a compressor, a fan and the like.

[0188] The controller is configured to perform the control method of the refrigeration device as described in any of the above embodiments.

[0189] According to the refrigeration device provided by the embodiments of the present application, the input current, the switching time and the channel temperature corresponding to each PFC channel are collected, the health score corresponding to each PFC channel is calculated, and then the target PFC channel is selected from the plurality of PFC channels according to the health score and the load rate corresponding to the PFC circuit, so that the running priority of each channel can be determined according to the health state of each channel, and some channels are prevented from being in harsh working conditions such as high load or high temperature for a long time, thereby prolonging the service life of the channels and the service life of the entire interleaved PFC circuit, and improving the reliability of the PFC circuit.

[0190] In another aspect, the present application further provides a computer program product, which comprises a computer program stored on a non-transitory computer readable storage medium, and the computer program comprises program instructions, when the program instructions are executed by a computer, the computer can perform each process of the control method of the refrigeration device and achieve the same technical effects. To avoid repetition, details are not repeated here.

[0191] In yet another aspect, the present application further provides a non-transitory computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement each process of the control method of the refrigeration device and achieve the same technical effects. To avoid repetition, details are not repeated here.

[0192] In yet another aspect, the embodiments of the present application further provide a chip, which comprises a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or instructions to implement each process of the control method of the refrigeration device and achieve the same technical effects. To avoid repetition, details are not repeated here.

[0193] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0194] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed to multiple network units. Part or all of the modules can be selected to achieve the purposes of the embodiments according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0195] Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software and the necessary general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of software products, and the computer software products can be stored in a computer readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and include a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0196] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A control method of a refrigeration apparatus, characterized by, The refrigeration equipment comprises a controller and a PFC circuit connected with the controller, the PFC circuit comprises a plurality of PFC channels, the output ends of the plurality of PFC channels are used for accessing loads, and each PFC channel is correspondingly provided with a current sensor, a temperature sensor and a timing device; the controller is used for executing the following method: The controller acquires input currents collected by the current sensors in each PFC channel, switching times of the PFC channels collected by the timing devices, channel temperatures of the PFC channels collected by the temperature sensors, and load rates of the PFC circuit; The controller calculates health scores of each PFC channel based on the input currents, the switching times and the channel temperatures; The controller controls target PFC channels in the plurality of PFC channels to work and controls other PFC channels in the plurality of PFC channels except the target PFC channels to be closed based on the load rates and the health scores of each PFC channel.

2. The control method of a refrigerating appliance according to claim 1, characterized in that, The control of the target PFC channels in the plurality of PFC channels to work based on the load rates and the health scores of each PFC channel comprises: Based on the load rates, a target number of PFC channels to be controlled to be turned on is determined; Based on the health scores of each PFC channel, the target number of PFC channels with the highest health scores are determined from the plurality of PFC channels as the target PFC channels, and the target PFC channels are controlled to work.

3. The control method of a refrigerating appliance according to claim 2, characterized in that, The determination of the target number of PFC channels with the highest health scores from the plurality of PFC channels as the target PFC channels based on the health scores of each PFC channel comprises: In a case where the health scores of each PFC channel are all greater than or equal to a first health score threshold, the target number of PFC channels are determined from the plurality of PFC channels as the target PFC channels based on the order from high to low of the health scores every target rotation period.

4. The control method of a refrigeration appliance according to any one of claims 1-3, characterized in that, After the controller controls the target PFC channels in the plurality of PFC channels to work based on the load rates and the health scores of each PFC channel, the method further comprises: In a case where a health score of a first target PFC channel in the target PFC channels is greater than or equal to a second health score threshold and less than the first health score threshold, at least part of loads corresponding to the first target PFC channel are transferred to a first other PFC channel; the first other PFC channel is a PFC channel in the target PFC channels except the first target PFC channel and has a health score greater than or equal to the first health score threshold, and the second health score threshold is less than the first health score threshold.

5. The control method of a refrigeration appliance according to any one of claims 1-3, characterized in that, The PFC circuit comprises a plurality of standby PFC channels; after the controller controls the target PFC channels in the plurality of PFC channels to work based on the load rates and the health scores of each PFC channel, the method further comprises: In a case that a health score corresponding to a second target PFC channel in the target PFC channels is greater than or equal to a third health score threshold and less than a second health score threshold, the second target PFC channel is controlled to be closed, and a load corresponding to the second target PFC channel is transferred to a second other PFC channel, and the target PFC channels are updated; the second other PFC channel is a PFC channel in the target PFC channels other than the third target PFC channel and has a health score greater than or equal to the third health score threshold.

6. The control method of a refrigeration appliance according to any one of claims 1-3, characterized in that, After the controller controls the target PFC channel in the plurality of PFC channels to work based on the load rate and the health score corresponding to each PFC channel, the method further comprises: In a case that a health score corresponding to a third target PFC channel in the target PFC channels is less than a third health score threshold, the third target PFC channel is controlled to be closed, and a load corresponding to the third target PFC channel is transferred to a second other PFC channel, and the target PFC channels are updated; the second other PFC channel is a PFC channel in the target PFC channels other than the third target PFC channel and has a health score greater than or equal to the third health score threshold.

7. The control method of a refrigerating appliance according to any one of claims 1-3, characterized in that, After the controller controls the target PFC channel in the plurality of PFC channels to work based on the load rate and the health score corresponding to each PFC channel, the method further comprises: In a case that a health score corresponding to a third target PFC channel in the target PFC channels is less than a third health score threshold, the phase of each PFC channel in the plurality of PFC channels other than the third target PFC channel is adjusted.

8. The control method of a refrigerating appliance according to any one of claims 1-3, characterized in that, The health score corresponding to each PFC channel is calculated based on the input current, the switching time, and the channel temperature, and comprises: Based on the channel temperature, a high-temperature running duration of the PFC channel under a first temperature condition, and a temperature difference between a maximum value and a minimum value of the channel temperature of the PFC channel within a target period are obtained; the first temperature condition is that the channel temperature is greater than a first temperature threshold; The input current, the switching time, the high-temperature running duration, and the temperature difference are weighted and summed to obtain the health score corresponding to the PFC channel.

9. A control device of a refrigerating apparatus, characterized by comprising: The refrigeration equipment comprises a controller and a PFC circuit connected with the controller, the PFC circuit comprises a plurality of PFC channels, and output ends of the plurality of PFC channels are used to access a load; each PFC channel is correspondingly provided with a current sensor, a temperature sensor, and a timing device; and the controller comprises: A first processing module is configured to enable the controller to obtain an input current collected by the current sensor in each PFC channel, a switching time of the PFC channel collected by the timing device, a channel temperature of the PFC channel collected by the temperature sensor, and a load rate of the PFC circuit. The second processing module is configured to cause the controller to calculate a health score corresponding to each PFC channel based on the input current, the switching time, and the channel temperature; The third processing module is configured to cause the controller to control a target PFC channel in the plurality of PFC channels to work and control other PFC channels in the plurality of PFC channels except the target PFC channel to be closed based on the load rate and the health score corresponding to each PFC channel.

10. A refrigeration appliance characterized in that, The application provides a refrigeration device, comprising: a controller; a PFC circuit comprising a plurality of PFC channels, the output ends of the plurality of PFC channels being configured to access a load, each PFC channel being provided with a current sensor, a temperature sensor, and a timing device, the PFC circuit being connected to the controller; the controller is configured to execute the control method of the refrigeration device according to any one of claims 1-8.

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