Method and system for measuring electricity consumption of refrigeration equipment, refrigeration equipment and storage medium

Abstract

The invention relates to a refrigeration equipment electricity consumption measuring method and system, refrigeration equipment and a storage medium. The method comprises the following steps: calculating target operation power by adopting different power calculation modes based on a current operation mode of the refrigeration equipment, and accurately calculating the target operation power by combining bus acquisition voltage and power supply acquisition current in an actual operation process in a normal working mode, compared with the existing estimated electricity consumption, the electricity consumption difference of the refrigeration equipment in different operation modes and the bus acquisition voltage and the power supply acquisition current during normal operation are considered, the calculation accuracy of the electricity consumption is improved, and the calculation accuracy of the refrigeration equipment is improved. The problem that the accuracy of the electricity consumption estimated by an existing refrigeration equipment electricity consumption estimation method is low is solved.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and particularly relates to a method and system for measuring the power consumption of refrigeration equipment, a refrigeration equipment, and a storage medium. Background Art

[0002] In recent years, with the improvement of users' demand for refrigeration equipment, the real-time power consumption display function has been increasingly used in refrigeration equipment of different brands. The existing method for measuring the power consumption of refrigeration equipment estimates the power consumption based on the power of each load turned on in the refrigeration equipment. However, the actual power consumption of the refrigeration equipment is different under different operating modes, and there is a large deviation between the estimated power consumption and the actual power consumption under different operating modes, resulting in low accuracy of the estimated power consumption. Summary of the Invention

[0003] The present application provides a method and system for measuring the power consumption of refrigeration equipment, a refrigeration equipment, and a storage medium to solve the problem of low accuracy of the power consumption estimated by the existing method for estimating the power consumption of refrigeration equipment.

[0004] In a first aspect, the present application provides a method for measuring the power consumption of refrigeration equipment, the method comprising:

[0005] Obtaining the current operating mode and equipment operating parameters of the refrigeration equipment, wherein the equipment operating parameters include a power supply acquisition current and a bus acquisition voltage;

[0006] When the current operating mode is a working mode, determining a target operating power according to the equipment operating parameters; or,

[0007] When the current operating mode is a shutdown mode, determining a preset shutdown power as the target operating power;

[0008] Determining the current power consumption of the refrigeration equipment according to the target operating power.

[0009] In a second aspect, the present application provides a system for measuring the power consumption of refrigeration equipment, the system for measuring the power consumption of refrigeration equipment comprising:

[0010] A power supply filtering circuit for filtering the input power supply and outputting a bus voltage signal;

[0011] A current acquisition circuit, the input end of the current acquisition circuit being connected to the output end of the power supply filtering circuit, and the output end of the current acquisition circuit being connected to a main control chip in a refrigeration control module, for collecting the current of the bus voltage signal provided by the power supply filtering circuit and outputting a power supply acquisition current to the main control chip;

[0012] The bus voltage acquisition circuit, the input end of the bus voltage acquisition circuit is connected to the output end of the power supply filtering circuit, and the output end of the bus voltage acquisition circuit is connected to the main control chip, which is used to collect the bus voltage signal provided by the power supply filtering circuit and output the bus collected voltage to the main control chip;

[0013] The main control chip is used to determine the target operating power according to the device operating parameters when the current operating mode of the refrigeration device is the working mode; or, when the current operating mode is the shutdown mode, determine the preset shutdown power as the target operating power; determine the current power consumption of the refrigeration device according to the target operating power, and the device operating parameters include the bus collected voltage and the power supply collected current.

[0014] In a third aspect, the present application provides a refrigeration device, and the refrigeration device includes the refrigeration device power consumption measurement system as described above.

[0015] In a fourth aspect, the present application further provides a computer storage medium storing computer-executable instructions for executing the above-mentioned refrigeration device power consumption measurement method.

[0016] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: The method provided by the embodiment of the present application obtains the current operating mode of the refrigeration device and the device operating parameters, wherein the device operating parameters include the power supply collected current and the bus collected voltage; when the current operating mode is the working mode, determine the target operating power according to the device operating parameters; or, when the current operating mode is the shutdown mode, determine the preset shutdown power as the target operating power; determine the current power consumption of the refrigeration device according to the target operating power.

[0017] Based on the above method, different power calculation methods are adopted based on the current operating mode of the refrigeration device to calculate the target operating power. In the normal working mode, the bus collected voltage and the power supply collected current in the actual operation process are combined to accurately calculate the target operating power, and then the power consumption of the refrigeration device is calculated according to the calculated target operating power. Compared with the existing estimated power consumption, the power consumption difference of the refrigeration device in different operating modes and the bus collected voltage and the power supply collected current during normal operation are considered, which improves the calculation accuracy of the power consumption and solves the problem that the power consumption estimated by the existing refrigeration device power consumption estimation method is less accurate. Description of the Drawings

[0018] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the present invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0021] Figure 1 It is a schematic structural diagram of a power consumption measurement system for a refrigeration device provided by an embodiment of the present application;

[0022] Figure 2 It is a schematic structural diagram of a power consumption measurement system for a refrigeration device provided by an embodiment of the present application;

[0023] Figure 3 It is a schematic structural diagram of a current acquisition circuit provided by an embodiment of the present application;

[0024] Figure 4 It is a schematic structural diagram of a power supply filtering circuit provided by an embodiment of the present application;

[0025] Figure 5 It is a schematic structural diagram of a bus voltage acquisition circuit provided by an embodiment of the present application;

[0026] Figure 6 It is a schematic structural diagram of a main drive communication circuit provided by an embodiment of the present application;

[0027] Figure 7 It is a schematic flowchart of a method for measuring the power consumption of a refrigeration device provided by an embodiment of the present application;

[0028] Figure 8 It is a schematic flowchart of a method for measuring the power consumption of a refrigeration device provided by an embodiment of the present application;

[0029] Figure 9 It is a schematic internal structure diagram of a refrigeration device provided by an embodiment of the present application. Specific embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some but not all of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0032] Figure 1 It is an application environment diagram of the power consumption measurement method for a refrigeration device in an embodiment. Refer to Figure 1 , this power consumption measurement method for a refrigeration device is applied to a power consumption measurement system for a refrigeration device. The power consumption measurement system for a refrigeration device includes:

[0033] A power supply filtering circuit 120, configured to filter the input power supply 110 and then output a bus voltage signal;

[0034] A current acquisition circuit 130, the input end of the current acquisition circuit 130 is connected to the output end of the power supply filtering circuit 120, and the output end of the current acquisition circuit 130 is connected to the main control chip 140 in the refrigeration control module, and is configured to perform current acquisition on the bus voltage signal provided by the power supply filtering circuit 120 and output a power supply acquisition current to the main control chip 140;

[0035] A bus voltage acquisition circuit 150, the input end of the bus voltage acquisition circuit 150 is connected to the output end of the power supply filtering circuit 120, and the output end of the bus voltage acquisition circuit 150 is connected to the main control chip 140, and is configured to perform voltage acquisition on the bus voltage signal provided by the power supply filtering circuit 120 and output a bus acquisition voltage to the main control chip 140;

[0036] The main control chip 140 is configured to, when the current operating mode of the refrigeration device is the working mode, determine a target operating power according to device operating parameters; or, when the current operating mode is the shutdown mode, determine a preset shutdown power as the target operating power; and determine the current power consumption of the refrigeration device according to the target operating power, where the device operating parameters include the bus acquisition voltage and the power supply acquisition current.

[0037] Specifically, the power supply filtering circuit 120 filters and rectifies the 220V alternating current provided by the input power supply 110 to output a bus voltage signal of 310V DC, which is respectively provided to the current acquisition circuit 130 and the bus voltage acquisition circuit 150. The current acquisition circuit 130 acquires current based on the bus voltage signal and outputs the power supply acquisition current to the main control chip 140.

[0038] The main control chip 140 calculates the power consumption of the refrigeration equipment according to the received bus acquisition voltage, power supply acquisition current and the operation mode of the refrigeration equipment. In different operation modes, it calculates the power consumption of the refrigeration equipment according to different calculation methods. Compared with the existing estimated power consumption, it takes into account the difference in power consumption of the refrigeration equipment in different operation modes, as well as the bus acquisition voltage and power supply acquisition current during normal operation, improving the calculation accuracy of the power consumption and solving the problem of low accuracy of the power consumption estimated by the existing power consumption estimation method for refrigeration equipment.

[0039] In one embodiment, referring to Figure 2 , the refrigeration equipment power consumption measurement system further includes a switching power supply circuit 160, a variable frequency chip 170 and a main drive communication circuit 180. The main control chip 140 is respectively connected to the switching power supply circuit 160, the main drive communication circuit 180 and the current acquisition circuit 130. The output end of the power supply filtering circuit 120 is respectively connected to the input end of the switching power supply circuit 160, the input end of the current acquisition circuit 130 and the input end of the bus voltage acquisition circuit 150. The output end of the bus voltage acquisition circuit 150 and the output end of the switching power supply circuit 160 are connected to the input end of the variable frequency chip 170. The main drive communication circuit 180 is connected between the main control chip 140 and the variable frequency chip 170;

[0040] The switching power supply circuit 160 is used to convert the bus voltage signal into a chip driving voltage and then transmit it to the main control chip 140 and the variable frequency chip 170 respectively;

[0041] The bus voltage acquisition circuit 150 is used to acquire the bus voltage signal and output the bus acquisition voltage to the variable frequency chip 170. The variable frequency chip 170 transmits the bus acquisition voltage to the main control chip 140 through the main drive communication circuit 180.

[0042] Specifically, the power supply filtering circuit 120 filters and rectifies the 220V alternating current provided by the input power supply 110 to output a bus voltage signal of 310V DC, which is respectively provided to the current acquisition circuit 130, the switching power supply circuit 160 and the bus voltage acquisition circuit 150.

[0043] The switching power supply circuit 160 steps down the bus voltage signal and outputs a 5V chip drive voltage to the main control chip 140 and the frequency conversion chip 170 to supply power to the main control chip 140 and the frequency conversion chip 170. The bus voltage acquisition circuit 150 acquires the voltage based on the bus voltage signal and outputs the bus acquisition voltage to the frequency conversion chip 170. The frequency conversion chip 170 transmits the bus acquisition voltage to the main control chip 140 through the main drive communication circuit 180.

[0044] The electricity consumption measurement system of the refrigeration device further includes a variable frequency drive circuit 190, a memory circuit 210, and a display board 220. The variable frequency drive circuit 190 is respectively connected to the power supply filter circuit 120 and the frequency conversion chip 170. The variable frequency drive circuit 190 is used to drive the compressor of the refrigeration device. The memory circuit 210 is used to store the electricity consumption calculated by the main control chip 140 at different times. The display board 220 is used to receive touch operations to generate an electricity consumption query request, and send the electricity consumption query request to the main control chip 140 through the WIFI communication module in the display board 220. The main control chip 140 queries the electricity consumption within the target time period corresponding to the electricity consumption query request from the memory circuit 210 according to the electricity consumption query request, and feeds back the electricity consumption within the target time period to the display board 220 through the internal WIFI communication module for display, so as to feedback the electricity consumption of the refrigeration device at different time periods to the user.

[0045] In one embodiment, referring to Figure 3 , the current acquisition circuit 130 includes a current transformer L10, a first resistor R81, a first diode D27, a rectifier capacitor C39, a first capacitor C44, a second resistor R32, a third resistor R127, a fourth resistor R126, a second capacitor C43, and a second diode D25. The first end and the second end of the current transformer L10 are connected in series on the zero line of the input power supply 110. The third end of the current transformer L10 is respectively connected to the first end of the first resistor R81 and the positive pole of the first diode D27. The negative pole of the first diode D27 is respectively connected to the positive pole of the rectifier capacitor C39, the first end of the first capacitor C44, and the first end of the second resistor R32. The second end of the second resistor R32 is respectively connected to the first end of the third resistor R127 and the first end of the fourth resistor R126. The second end of the fourth resistor R126 is respectively connected to the first end of the second capacitor C43 and the positive pole of the second diode D25. The negative pole of the second diode D25 is connected to the input end of the main control chip 140;

[0046] The second end of the first resistor R81, the negative pole of the rectifier capacitor C39, the second end of the first capacitor C44, the second end of the third resistor R127, and the second end of the second capacitor C43 are grounded together with the fourth end of the current transformer L10.

[0047] Specifically, the current transformer L10 is selected with a specification of 5A / 2.5MA. The first end of the current transformer L10 is connected to the rectifier bridge BD1 and is common to the first neutral line (N-1). The current transformer L10 is connected in series on the power supply neutral line, that is, it is connected between the first neutral line (N-1) and the second neutral line (N-2). The output end of the current transformer L10 is connected in parallel with a 5.1K first resistor R81, and then passes through a half-wave rectifier circuit composed of a first diode D27 and a rectifier capacitor C39, a voltage dividing circuit composed of a second resistor R32 and a third resistor R127, and a filtering sub-circuit composed of a fourth resistor R126 and a second capacitor C43 in sequence, converting the bus voltage signal into a 0-5v DC voltage and transmitting it to the AD acquisition port of the main control chip 140. The 0-5v DC voltage can obtain the power supply acquisition current after transformation. Different DC voltages correspond to different power supply acquisition currents, that is, there is a corresponding relationship between the DC voltage and the current. Therefore, the power supply acquisition current can be determined by the output DC voltage.

[0048] In one embodiment, referring to Figure 4 , the power supply filtering circuit 120 includes a fuse FU1, a varistor RV1, a first filter capacitor C4, a second filter capacitor C20, a third filter capacitor C8, a fourth filter capacitor C10, a common mode inductor L1, a thermistor NTC, a fifth resistor R33, a sixth resistor R34, a differential mode inductor L2, and a filter chip U1;

[0049] The first end of the fuse FU1 is connected to the input power supply 110. The second end of the fuse FU1 is respectively connected to the first end of the varistor RV1, the first end of the first filter capacitor C4, the second end of the common mode inductor L1, and the first end of the fifth resistor R33. The first end of the common mode inductor L1, the second end of the varistor RV1, and the second end of the first filter capacitor C4 are commonly connected to the neutral line of the input power supply 110. The third end of the common mode inductor L1 is respectively connected to the first end of the second filter capacitor C20, the first end of the fourth filter capacitor C10, and the first end of the differential mode inductor L2. The fourth end of the common mode inductor L1 is respectively connected to the second end of the second filter capacitor C20, the first end of the thermistor NTC, and the first end of the third filter capacitor C8. The second end of the thermistor NTC is connected to the second end of the current transformer L10. The second ends of the third filter capacitor C8 and the fourth filter capacitor C10 are commonly grounded. The rectifier bridge is connected between the live wire and the neutral line of the input power supply 110;

[0050] The second end of the fifth resistor R33 is connected to the first end of the sixth resistor R34 through the filter chip U1. The second end of the sixth resistor R34 is connected to the neutral line of the input power supply 110.

[0051] Specifically, after the power input line of the input power supply 110 is connected to the main board, it passes through a first-order EMI filter circuit composed of a first filter capacitor C4, a common-mode inductor L1, a second filter capacitor C20, a third filter capacitor C8, and a fourth filter capacitor C10. Then, a differential-mode inductor L2 with a value of 8 MH / 2A is connected in series on the live wires (L-1, L-2). A rectifier bridge is connected between the neutral wire (N-1) and the live wire (L-2) of the input power supply 110, and this structure is used to filter the input power supply 110. The neutral wire (N-2) passes through a thermistor NTC and then is connected to a current transformer L10 to provide a filtered bus voltage signal for the current acquisition circuit 130.

[0052] In one embodiment, referring to Figure 5 , the bus voltage acquisition circuit 150 includes two diodes, five resistors, and one capacitor. The bus voltage signal P passes through resistors R30, R29, and R18 in sequence, and then after being divided by resistors R17 and R31 and filtered by capacitor C3, it is input to the port IP+ of the frequency conversion chip 170.

[0053] In one embodiment, referring to Figure 6 , the main drive communication circuit 180 includes two optocouplers (PC1, PC4), two triodes (Q1, Q3), and peripheral circuits. The peripheral circuits include multiple resistors and capacitors. The main drive communication circuit 180 is used to realize the communication transmission between the main control chip 140 and the frequency conversion chip 170.

[0054] The components used in each component circuit of the above refrigeration equipment power consumption measurement system have relatively low purchase costs, thereby reducing the measurement cost of the refrigeration equipment power consumption.

[0055] In one embodiment, Figure 7 is a schematic flow chart of a method for measuring the power consumption of a refrigeration equipment in one embodiment. Referring to Figure 7 , a method for measuring the power consumption of a refrigeration equipment is provided. In this embodiment, it is mainly exemplified by applying this method to the main control chip 140 in the above Figure 1 . The method for measuring the power consumption of the refrigeration equipment specifically includes the following steps:

[0056] Step S210, obtain the current operating mode and equipment operating parameters of the refrigeration equipment, where the equipment operating parameters include the power acquisition current and the bus acquisition voltage.

[0057] Specifically, the refrigeration equipment can specifically be any equipment with refrigeration function such as a refrigerator, a freezer, a refrigerated truck, a cold storage, etc. The operation modes of the refrigeration equipment include a working mode and a shutdown mode. The working mode includes multiple different functional operation modes, such as a defrosting working mode and a refrigeration working mode. The power supply acquisition current is acquired by the current acquisition circuit 130 and then transmitted to the main control chip 140. The change of the power supply current is reflected by the power supply acquisition current. The bus acquisition voltage is acquired by the bus voltage acquisition circuit 150 and then transmitted to the main control chip 140 through the frequency conversion chip 170. The change of the bus voltage is reflected by the bus acquisition voltage.

[0058] Step S220, when the current operation mode is the working mode, determine the target operation power according to the equipment operation parameters; or,

[0059] Step S230, when the current operation mode is the shutdown mode, determine the preset shutdown power as the target operation power;

[0060] Step S240, determine the current power consumption of the refrigeration equipment according to the target operation power.

[0061] Specifically, when the refrigeration equipment is in different operation modes, the operation state of the compressor is different, resulting in different operation powers, and thus different power consumptions. Therefore, different calculation methods are needed to calculate the target operation power of the refrigeration equipment in different operation modes. When the refrigeration equipment is in the working mode, it is necessary to accurately calculate the target operation power by combining the equipment operation parameters; when the refrigeration equipment is in the shutdown mode, the preset shutdown power is determined as the target operation power. At this time, the preset shutdown power is the sum of the standby power and the weak current load power. Generally, the operation power of the refrigeration equipment in the shutdown mode is a fixed value. Therefore, the preset shutdown power is the power determined based on the shutdown experience of the refrigeration equipment. Different models and types of refrigeration equipment correspond to different preset shutdown powers in the shutdown mode.

[0062] Adopting different power calculation methods to calculate the target operation power based on the current operation mode of the refrigeration equipment. In the normal working mode, the bus acquisition voltage and the power supply acquisition current in the actual operation process are combined to accurately calculate the target operation power. Even if the bus voltage or the power supply current changes, the bus acquisition voltage or the power supply acquisition current collected after the change can be combined to calculate the target operation power in real time. Then, the power consumption of the refrigeration equipment is accurately calculated according to the calculated target operation power. Compared with the existing method for estimating power consumption, the power consumption difference of the refrigeration equipment in different operation modes and the bus acquisition voltage and the power supply acquisition current during normal operation are considered, improving the calculation accuracy of the power consumption and solving the problem that the accuracy of the power consumption estimated by the existing power consumption estimation method for refrigeration equipment is relatively low.

[0063] In one embodiment, referring to Figure 8 when the current operating mode is the working mode, determining the target operating power according to the device operating parameters includes:

[0064] When the current operating mode is the refrigeration working mode, determining the target power factor according to the compressor operating parameters, the power supply collected current, and the bus collected voltage in the device operating parameters;

[0065] Determining the target operating power according to the product of the power supply collected current, the bus collected voltage, and the target power factor.

[0066] Specifically, when the current operating mode of the refrigeration equipment is the refrigeration working mode, the compressor of the refrigeration equipment is in the operating state, but the power consumption is different when the compressor is in different operating states. Therefore, it is necessary to comprehensively adjust the power factor according to the power supply collected current, the bus collected voltage, and the compressor operating parameters, that is, to obtain the target power factor cosφ. The target operating power is determined according to the product of the target power factor, the power supply collected current, and the bus collected voltage. The target operating power P = U * I * cosφ, where U refers to the bus collected voltage and I refers to the power supply collected current. By comprehensively considering the compressor operating parameters, the bus collected voltage, and the power supply collected current, the target operating power is accurately calculated, and the calculation accuracy of the target operating power is improved compared with the existing operating power.

[0067] In one embodiment, when the current operating mode is the refrigeration working mode, determining the target power factor according to the compressor operating parameters, the power supply collected current, and the bus collected voltage in the device operating parameters includes:

[0068] When the current operating mode is the refrigeration working mode, determining the corresponding basic power factor according to the compressor operating parameters;

[0069] Determining the voltage coefficient according to the ratio between the bus collected voltage and the preset bus voltage;

[0070] Determining the current coefficient corresponding to the power supply collected current according to the corresponding relationship between the power supply current and the current coefficient;

[0071] Determining the target power factor according to the sum of the current coefficient corresponding to the power supply collected current and the preset value and the product of the basic power factor and the voltage coefficient.

[0072] Specifically, when the current operating mode of the refrigeration equipment is the refrigeration working mode, according to the corresponding relationship between the compressor operating parameters and the basic power factor, determine the basic power factor PF0 corresponding to the compressor operating parameters in different operating states, which takes into account the impact of the compressor in different operating states on the power consumption. The voltage coefficient is K1 = U / U0, where U0 is the preset bus voltage, and the preset bus voltage is the voltage value corresponding to the bus voltage signal. The value range of K1 is 0.9 to 1.1.

[0073] There is a corresponding relationship between the current coefficient and the supply current. Therefore, based on this corresponding relationship, determine the current coefficient K2 corresponding to the power supply acquisition current. The larger the power supply acquisition current, the larger the current coefficient. The value range of K2 is 0 to 0.1.

[0074] The preset value is any positive integer. In this embodiment, the preset value is 1, and the target power factor cosφ = k1 * PF0 * (1 + k2).

[0075] In one embodiment, when the current operating mode is the refrigeration working mode, determining the corresponding basic power factor according to the compressor operating parameters includes:

[0076] When the current operating mode is the refrigeration working mode, determine the corresponding basic power factor according to the compressor speed and the operating environment temperature in the compressor operating parameters.

[0077] Specifically, there is a corresponding relationship between the compressor speed, the operating environment temperature, and the basic power factor. Generally, the larger the compressor speed, the larger the basic power factor, and the higher the operating environment temperature, the smaller the basic power factor. Therefore, comprehensively consider the compressor speed and the operating environment temperature to balance the selection of the basic power factor, and query the basic power factor under different compressor speeds and different operating environment temperatures based on this corresponding relationship to improve the calculation accuracy of the target operating power under different compressor speeds and different operating environment temperatures.

[0078] In one embodiment, referring to Figure 8 , when the current operating mode is the working mode, determining the target operating power according to the equipment operating parameters includes:

[0079] When the current operating mode is the defrosting working mode, determine the target operating power according to the product of the bus acquisition voltage, the power supply acquisition current, and the preset power factor in the equipment operating parameters.

[0080] Specifically, when the current operating mode is the defrosting mode, the defrosting heater is in the working state. At this time, the power factor is the preset power factor, and the preset power factor is 1, that is, cosφ = 1. At this time, the target operating power is the product of the bus collected voltage and the power supply collected current, that is, P = U * I * cosφ = U * I.

[0081] In one embodiment, determining the current power consumption of the refrigeration device according to the target operating power includes:

[0082] Determining the current power consumption of the refrigeration device according to the product of the target operating power, the working duration of the refrigeration device, and the conversion coefficient.

[0083] Specifically, the working duration of the refrigeration device is T, the conversion coefficient is 0.707, and the calculation formula for the current power consumption is 0.707 * U * I * cosφ * T. By collecting the power supply neutral line current and the bus voltage, and correcting the power factor according to the working mode of the refrigeration device, the real-time power consumption is finally calculated, reducing the power consumption calculation error.

[0084] Figure 7 and Figure 8 is a schematic flowchart of a method for measuring the power consumption of a refrigeration device in an embodiment. It should be understood that although Figure 7 and Figure 8 the steps in the flowchart are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise clearly stated in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, Figure 7 and Figure 8 at least a part of the steps in

[0085] such as Figure 9 shown, the embodiment of the present application provides a refrigeration device, including a processor 711, a communication interface 712, a memory 713, and a communication bus 714. Among them, the processor 711, the communication interface 712, and the memory 713 complete communication with each other through the communication bus 714;

[0086] The memory 713 is used to store a computer program;

[0087] The processor 711, when executing the program stored on the memory 713, implements the method for measuring the power consumption of the refrigeration device provided in any one of the foregoing method embodiments.

[0088] Those skilled in the art can understand that Figure 9 the structure shown in is only a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the refrigeration equipment to which the solution of the present application is applied. The specific refrigeration equipment may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0089] In one embodiment, the refrigeration equipment power consumption measurement system provided by the present application can be implemented in the form of a computer program, and the computer program can run on the refrigeration equipment as shown in Figure 9 . Each program module that makes up the refrigeration equipment power consumption measurement system can be stored in the memory of the refrigeration equipment. The computer program composed of each program module enables the processor to execute the refrigeration equipment power consumption measurement methods of various embodiments of the present application described in this specification.

[0090] The embodiments of the present application also provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the refrigeration equipment power consumption measurement method provided in any of the foregoing method embodiments.

[0091] The system embodiments described above are only illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0092] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the above technical solution in essence or the part that contributes to the related technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a refrigeration equipment (which can be a personal computer, server, or network equipment, etc.) to execute the methods described in various embodiments or some parts of the embodiments.

[0093] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative.

[0094] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for measuring the power consumption of a refrigeration device, characterized in that, The method includes: Obtaining the current operating mode of the refrigeration device and device operating parameters, where the device operating parameters include the power acquisition current and the bus acquisition voltage; When the current operating mode is the working mode, determining the target operating power according to the device operating parameters; or, When the current operating mode is the shutdown mode, determining the preset shutdown power as the target operating power; Determining the current power consumption of the refrigeration device according to the target operating power.

2. The method according to claim 1, characterized in that The step of, when the current operating mode is the working mode, determining the target operating power according to the device operating parameters includes: When the current operating mode is the refrigeration working mode, determining the target power factor according to the compressor operating parameters, the power acquisition current, and the bus acquisition voltage in the device operating parameters; Determining the target operating power according to the product of the power acquisition current, the bus acquisition voltage, and the target power factor.

3. The method according to claim 2, characterized in that, The step of, when the current operating mode is the refrigeration working mode, determining the target power factor according to the compressor operating parameters, the power acquisition current, and the bus acquisition voltage in the device operating parameters includes: When the current operating mode is the refrigeration working mode, determining the corresponding basic power factor according to the compressor operating parameters; Determining the voltage coefficient according to the ratio between the bus acquisition voltage and the preset bus voltage; Determining the current coefficient corresponding to the power acquisition current according to the corresponding relationship between the power supply current and the current coefficient; Determining the target power factor according to the product of the sum of the current coefficient corresponding to the power acquisition current and the preset value, and the basic power factor and the voltage coefficient.

4. The method according to claim 3, characterized in that The step of, when the current operating mode is the refrigeration working mode, determining the corresponding basic power factor according to the compressor operating parameters includes: When the current operating mode is the refrigeration working mode, determining the corresponding basic power factor according to the compressor speed and the operating environment temperature in the compressor operating parameters.

5. The method according to claim 1, wherein The step of, when the current operating mode is the working mode, determining the target operating power according to the device operating parameters includes: When the current operating mode is the defrosting working mode, determining the target operating power according to the product of the bus acquisition voltage, the power acquisition current, and the preset power factor in the device operating parameters.

6. The method according to claim 1, characterized in that, The step of determining the current power consumption of the refrigeration device according to the target operating power includes: Determining the current power consumption of the refrigeration device according to the product of the target operating power, the working duration of the refrigeration device, and the conversion coefficient.

7. A power consumption measurement system for a refrigeration device, characterized in that, The refrigeration device power consumption measurement system includes: A power filter circuit for filtering the input power supply and outputting a bus voltage signal; A current acquisition circuit, the input end of the current acquisition circuit is connected to the output end of the power filter circuit, and the output end of the current acquisition circuit is connected to the main control chip in the refrigeration control module, for performing current acquisition on the bus voltage signal provided by the power filter circuit and outputting the power acquisition current to the main control chip; The bus voltage acquisition circuit, the input end of the bus voltage acquisition circuit is connected to the output end of the power supply filtering circuit, and the output end of the bus voltage acquisition circuit is connected to the main control chip, and is used to perform voltage acquisition on the bus voltage signal provided by the power supply filtering circuit and output the bus acquisition voltage to the main control chip; The main control chip is used to determine the target operating power according to the device operating parameters when the current operating mode of the refrigeration device is the working mode; or, when the current operating mode is the shutdown mode, determine the preset shutdown power as the target operating power; determine the current power consumption of the refrigeration device according to the target operating power, and the device operating parameters include the bus acquisition voltage and the power supply acquisition current.

8. The electricity consumption measurement system for a refrigeration device according to claim 7, characterized in that, The refrigeration device power consumption measurement system further includes a switching power supply circuit, a variable frequency chip and a main drive communication circuit. The main control chip is respectively connected to the switching power supply circuit, the main drive communication circuit and the current acquisition circuit. The output end of the power supply filtering circuit is respectively connected to the input end of the switching power supply circuit, the input end of the current acquisition circuit and the input end of the bus voltage acquisition circuit. The output end of the bus voltage acquisition circuit and the output end of the switching power supply circuit are connected to the input end of the variable frequency chip, and the main drive communication circuit is connected between the main control chip and the variable frequency chip; The switching power supply circuit is used to convert the bus voltage signal into a chip driving voltage and then transmit it to the main control chip and the variable frequency chip respectively; The bus voltage acquisition circuit is used to perform voltage acquisition on the bus voltage signal and output the bus acquisition voltage to the variable frequency chip, and the variable frequency chip transmits the bus acquisition voltage to the main control chip through the main drive communication circuit.

9. The electricity consumption measurement system for a refrigeration device according to claim 8, characterized in that, The current acquisition circuit includes a current transformer, a first resistor, a first diode, a rectifying capacitor, a first capacitor, a second resistor, a third resistor, a fourth resistor, a second capacitor, and a second diode. The first end and the second end of the current transformer are connected in series on the zero line of the input power supply. The third end of the current transformer is respectively connected to the first end of the first resistor and the positive pole of the first diode. The negative pole of the first diode is respectively connected to the positive pole of the rectifying capacitor, the first end of the first capacitor, and the first end of the second resistor. The second end of the second resistor is respectively connected to the first end of the third resistor and the first end of the fourth resistor. The second end of the fourth resistor is respectively connected to the first end of the second capacitor and the positive pole of the second diode. The negative pole of the second diode is connected to the input end of the main control chip; The second end of the first resistor, the negative pole of the rectifying capacitor, the second end of the first capacitor, the second end of the third resistor, and the second end of the second capacitor are grounded together with the fourth end of the current transformer.

10. The electricity consumption measurement system for a refrigeration device according to claim 9, characterized in that, The power supply filtering circuit includes a fuse, a varistor, a first filter capacitor, a second filter capacitor, a third filter capacitor, a fourth filter capacitor, a common mode inductor, a thermistor, a fifth resistor, a sixth resistor, a differential mode inductor, and a filter chip; The first end of the fuse is connected to the input power supply. The second end of the fuse is respectively connected to the first end of the varistor, the first end of the first filter capacitor, the second end of the common-mode inductor, and the first end of the fifth resistor. The first end of the common-mode inductor, the second end of the varistor, and the second end of the first filter capacitor are commonly connected to the zero line of the input power supply. The third end of the common-mode inductor is respectively connected to the first end of the second filter capacitor, the first end of the fourth filter capacitor, and the first end of the differential-mode inductor. The fourth end of the common-mode inductor is respectively connected to the second end of the second filter capacitor, the first end of the thermistor, and the first end of the third filter capacitor. The second end of the thermistor is connected to the second end of the current transformer. The second ends of the third filter capacitor and the fourth filter capacitor are commonly grounded. The rectifier bridge is connected between the live wire and the zero line of the input power supply; The second end of the fifth resistor is connected to the first end of the sixth resistor through the filter chip, and the second end of the sixth resistor is connected to the zero line of the input power supply.

11. A refrigeration device, characterized in that, The refrigeration device includes the refrigeration device power consumption measurement system according to any one of claims 7 to 10.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method according to any one of claims 1 to 6.

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