A capacitor assembly method, device, equipment, computer-readable storage medium and computer program product

Abstract

The present application provides a capacitor grouping method, device, equipment, computer-readable storage medium and computer program product; the method includes: obtaining the first actual capacitance of multiple first capacitors, grouping the first capacitors to obtain at least two first capacitor groups; determining the capacitance reference value of the second capacitor based on the first capacitor group, considering production and measurement errors; grading the second capacitor according to the second actual capacitance of the second capacitor to obtain at least two second capacitor groups; obtaining the third capacitor and the fourth capacitor from two adjacent first capacitor groups respectively, connecting the third capacitor and the fourth capacitor in series, determining the capacitance value to be grouped according to a calculation formula, determining the target capacitor group from the second capacitor group according to the capacitance value to be grouped, selecting any second capacitor in the target capacitor group, and grouping it with the third capacitor and the fourth capacitor. Through the present application, the efficiency and accuracy of capacitor grouping can be improved.

Description

Technical Field

[0001] The present application relates to capacitor assembly technology, and more particularly to a capacitor assembly method, device, equipment, computer-readable storage medium, and computer program product. Background Art

[0002] In the related art, the design of a voltage sensor (or energy extraction device) using the principle of capacitor voltage division requires two high-voltage capacitors and one low-voltage capacitor to be connected in series. In order to ensure the accuracy of the sensor, the capacitance of the high-voltage capacitor and the low-voltage capacitor is usually calculated theoretically before the capacitor is produced. Due to the instability of the process for producing capacitors, there is a deviation between the actual capacitance of the produced capacitors and the theoretical capacitance. When selecting a matching low-voltage capacitor for a high-voltage capacitor, it is necessary to randomly select a low-voltage capacitor from a large number of low-voltage capacitors and test whether the capacitance of the low-voltage capacitor matches the high-voltage capacitor. If it does not match, it is necessary to put the low-voltage capacitor back and take out a low-voltage capacitor for retesting until the capacitance of the low-voltage capacitor matches the capacitance of the high-voltage capacitor. This matching method consumes a lot of time, resulting in low efficiency of capacitor matching. Summary of the invention

[0003] The embodiments of the present application provide a capacitor assembly method, apparatus, device, computer-readable storage medium, and computer program product, which can achieve efficient capacitor assembly.

[0004] The technical solution of the embodiment of the present application is implemented as follows:

[0005] The present application provides a capacitor assembly method, the method comprising:

[0006] A capacitor assembly method, characterized in that the method comprises:

[0007] Acquire first actual capacitances of a plurality of first capacitors, and group the plurality of first capacitors based on the plurality of first actual capacitances to obtain at least two first capacitor groups;

[0008] Determine a first capacitance theoretical value, a second capacitance theoretical value and a capacitance reference value based on the first actual capacitance of each first capacitor of the at least two first capacitance groups, wherein the capacitance reference value is used to produce the second capacitor;

[0009] After producing a plurality of second capacitors based on the capacitance reference value, obtaining second actual capacitance values ​​of the plurality of second capacitors, and dividing the plurality of second capacitors into at least two second capacitor groups based on the first capacitance theoretical value and the second capacitance theoretical value;

[0010] A third capacitor and a fourth capacitor are respectively obtained from two adjacent first capacitor groups, a first series capacitance after the third capacitor and the fourth capacitor are connected in series is determined, and a capacitance to be assembled is determined based on the first series capacitance; a target capacitor group is determined from the at least two second capacitor groups based on the capacitance to be assembled, and any second capacitor, the third capacitor and the fourth capacitor in the target capacitor group are assembled.

[0011] The present application provides a capacitor assembly device, including:

[0012] A first capacitor grouping module, configured to obtain first actual capacitances of a plurality of first capacitors, and group the plurality of first capacitors based on the plurality of first actual capacitances to obtain at least two first capacitor groups;

[0013] A capacitance reference value determination module, configured to determine a first capacitance theoretical value, a second capacitance theoretical value, and a capacitance reference value based on a first actual capacitance of each first capacitor of the at least two first capacitance groups, wherein the capacitance reference value is used to produce a second capacitor;

[0014] a second capacitor grouping module, configured to obtain second actual capacitances of the plurality of second capacitors after producing the plurality of second capacitors based on the capacitance reference value, and to divide the plurality of second capacitors into at least two second capacitor groups based on the first capacitance theoretical value and the second capacitance theoretical value;

[0015] a module for determining a capacitance value to be grouped, configured to obtain a third capacitor and a fourth capacitor from two adjacent first capacitor groups, respectively, determine a first series capacitance after the third capacitor and the fourth capacitor are connected in series, and determine a capacitance value to be grouped based on the first series capacitance;

[0016] The capacitor grouping module is used to determine a target capacitor group from the at least two second capacitor groups based on the capacitance to be grouped, and to group any second capacitor, the third capacitor, and the fourth capacitor in the target capacitor group.

[0017] In the above scheme, the first capacitor grouping module is also used to determine the first capacitance mean based on multiple first actual capacitances; obtain a preset first coefficient and a second coefficient, the first coefficient is greater than the second coefficient; based on the first capacitance mean and the first coefficient, determine the jth first capacitance interval range, j is an odd number greater than 0 and less than K, K is the total number of first capacitor groups, and K is an even number; based on the first capacitance mean and the second coefficient, determine the j+1th first capacitance interval range; based on each first capacitance interval range, group the multiple first capacitors to obtain at least two first capacitor groups.

[0018] In the above scheme, the first capacitor grouping module is further used to determine the first target capacitance interval range where the first actual capacitance of each first capacitor is located; divide each first capacitor into the first candidate capacitor group corresponding to the first target capacitance interval range corresponding to each first capacitor; determine the difference in the number of first capacitors in the jth first candidate capacitor group and the j+1th first candidate capacitor group; determine the difference ratio based on the difference in the number, and when there is a difference ratio greater than a preset ratio threshold, update the first capacitance mean to obtain a new first capacitance mean; based on the new first capacitance mean, group the multiple first capacitors to obtain at least two first capacitor groups. When there is no difference ratio greater than the preset ratio threshold, determine the first candidate capacitor group as the first capacitor group.

[0019] In the above scheme, the first capacitor grouping module is also used to obtain a preset adjustment value, and determine a new first capacitance average value based on the adjustment value and the first capacitance average value; or, obtain a preset number of first target capacitors from the multiple first capacitors; and determine a new first capacitance average value based on the second actual capacitance of the preset number of first target capacitors.

[0020] In the above scheme, the capacitance reference value determination module is also used to determine the first maximum capacitance and the first minimum capacitance based on the first actual capacitance of each first capacitor in the first first capacitor group; determine the second maximum capacitance and the second minimum capacitance based on the first actual capacitance of each first capacitor in the second first capacitor group; determine the second series capacitance based on the first maximum capacitance and the second maximum capacitance, and determine the third series capacitance based on the first minimum capacitance and the second minimum capacitance; determine the first capacitance theoretical value based on the second series capacitance and a preset third coefficient, and determine the second capacitance theoretical value based on the third series capacitance and the third coefficient; determine the second capacitance mean value based on the first capacitance theoretical value and the second capacitance theoretical value, and determine the capacitance reference value based on the second capacitance mean value and a preset fourth coefficient.

[0021] In the above scheme, the second capacitor grouping module is also used to determine multiple second capacitance ranges based on the first capacitance theoretical value, the second capacitance theoretical value, the preset fifth coefficient and the sixth coefficient; based on each second capacitance range, the multiple second capacitors are grouped to obtain at least two second capacitor groups.

[0022] In the above scheme, the module for determining the capacitance to be assembled is also used to obtain the third actual capacitance of the third capacitor and the fourth actual capacitance of the fourth capacitor under the current test environment; determine the first series capacitance based on the third actual capacitance and the fourth actual capacitance; obtain the standard comparison value and the assembly coefficient; and determine the product of the first series capacitance, the standard comparison value and the assembly coefficient as the capacitance to be assembled.

[0023] The capacitor group matching device also includes a standard comparison value determination module, which is used to obtain a fifth capacitor from the jth first capacitor group and a sixth capacitor from the j+1th first capacitor group, where j is an odd number greater than 0 and less than K, K is the total number of first capacitor groups, and K is an even number; obtain a fifth actual capacitance of the fifth capacitor and a sixth actual capacitance of the sixth capacitor under a current test environment; obtain a first historical capacitance of the fifth capacitor and a second historical capacitance of the sixth capacitor under a historical test environment; determine a first ratio of the fifth actual capacitance to the first historical capacitance, and determine a second ratio of the sixth actual capacitance to the second historical capacitance; and determine a standard comparison value based on the first ratio and the second ratio.

[0024] An embodiment of the present application provides an electronic device, including:

[0025] A memory for storing computer executable instructions;

[0026] The processor is used to implement a capacitor assembly method provided in an embodiment of the present application when executing the computer executable instructions stored in the memory.

[0027] An embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions for implementing a capacitor assembly method provided in an embodiment of the present application when executed by a processor.

[0028] An embodiment of the present application provides a computer program product, including a computer program or a computer executable instruction. When the computer program or the computer executable instruction is executed by a processor, a capacitor assembly method provided in an embodiment of the present application is implemented.

[0029] The embodiments of the present application have the following beneficial effects:

[0030] The present application provides a capacitor grouping method, which obtains the first actual capacitance values ​​of multiple first capacitors to group the first capacitors to obtain at least two first capacitor groups; based on the first capacitor group, considering the production error factor and the measurement error factor, determine the capacitance reference value of the second capacitor; according to the second actual capacitance value of the second capacitor, grade the second capacitor to obtain at least two second capacitor groups; respectively obtain the third capacitor and the fourth capacitor from two adjacent first capacitor groups, connect the third capacitor and the fourth capacitor in series, and determine the capacitance value to be grouped according to the calculation formula, determine the target capacitor group from the second capacitor group according to the capacitance value to be grouped, and select any second capacitor, the third capacitor and the fourth capacitor in the target capacitor group for grouping. The above-mentioned capacitor grouping method provides a method of obtaining the capacitance value to be grouped by direct calculation, and determines the target capacitor group from multiple second capacitor groups according to the capacitance value to be grouped, so that a second capacitor can be directly taken out from the target capacitor group to realize the rapid grouping of the second capacitor with the third capacitor and the fourth capacitor. This direct calculation method can improve the efficiency and accuracy of capacitor grouping. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the structure of a capacitor assembly device provided in an embodiment of the present application;

[0032] Figure 2A is a first flow chart of the capacitor assembly method provided in an embodiment of the present application;

[0033] Figure 2B is a second flow chart of the first capacitor group division method provided in an embodiment of the present application;

[0034] Figure 2C It is a third flow chart of the method for determining the difference in the number of first capacitor groups and re-obtaining the first capacitance average value provided in an embodiment of the present application;

[0035] Figure 2D is a fifth flow chart of the method for determining a capacitance reference value provided in an embodiment of the present application;

[0036] Figure 2E is a sixth flow chart of the second capacitor group division method provided in an embodiment of the present application;

[0037] Figure 3 This is the seventh flow chart of determining the standard comparison value provided in the embodiment of the present application.

[0038] It should be pointed out that the above-mentioned "first" and "second" are only used to distinguish different solutions, and do not represent the degree of superiority or inferiority of the solutions or the priority in the implementation process. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0040] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0041] In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0042] In the embodiments of the present application, the term "module" or "unit" refers to a computer program or a part of a computer program that has a predetermined function and works together with other related parts to achieve a predetermined goal, and can be implemented in whole or in part by using software, hardware (such as processing circuits or memories), or a combination thereof. Similarly, a processor (or multiple processors or memories) can be used to implement one or more modules or units. In addition, each module or unit can be part of an overall module or unit that includes the function of the module or unit.

[0043] Unless otherwise defined, all technical and scientific terms used in the embodiments of the present application have the same meanings as those commonly understood by those skilled in the art. The terms used in the embodiments of the present application are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0044] Before further describing the embodiments of the present application in detail, the nouns and terms involved in the embodiments of the present application are explained. The nouns and terms involved in the embodiments of the present application are subject to the following interpretations.

[0045] 1) Capacitance: A physical quantity that describes the ability of a capacitor to store charge. In simple terms, capacitance is the amount of charge that can be stored between two conductors at a given potential difference, or voltage. The size of the capacitance is related to the distance between the conductors, the area of ​​the conductors, and the conductivity or dielectric constant of the medium between them. The unit of capacitance is .

[0046] 2) Capacitor bank: refers to combining multiple capacitors according to certain rules, methods and parameters to form a capacitor bank with specific functions according to the specific electrical system requirements. In this application, it refers to selecting two high-voltage capacitors and one low-voltage capacitor that need to be connected in series in a voltage sensor (or energy extraction device) that uses the capacitor voltage division principle.

[0047] 3) Series capacitance: The series capacitance of capacitors refers to the total capacitance value when multiple capacitors are connected in series in a circuit. The series capacitance is usually smaller than the capacitance of any single capacitor. The reciprocal of the series capacitance is equal to the sum of the reciprocals of the capacitance values ​​of each capacitor. For example, if both capacitors have a value of 10 The series capacitance of the capacitors is 5 .

[0048] 4) Capacitor voltage division principle: refers to the fact that in a series capacitor circuit, the voltage distribution is proportional to the ratio of the capacitance value. When multiple capacitors are connected in series, the total voltage will be distributed on each capacitor according to the ratio of each capacitor. This principle can be applied to electronic circuits to achieve functions such as voltage distribution and voltage multiplication.

[0049] 5) Voltage sensor: By sensing the change of the measured voltage, it is converted into a measurable and processable signal output, such as an analog voltage signal, current signal, switch signal or audible signal. These output signals can be used for subsequent data processing, display, recording or control. In this application, the voltage sensor adopts the principle of capacitor voltage division, connecting two high-voltage capacitors and one low-voltage capacitor in series, and proportionally reducing the input high voltage to a measurable low voltage range.

[0050] 6) High-voltage capacitor: A component that can store and release electrical energy, and its characteristic is that it can withstand higher voltages. Generally, high-voltage capacitors refer to capacitors with a rated working voltage of more than 1kV or more than 10kV. This type of capacitor plays the role of energy storage, filtering, decoupling, etc. in the circuit, and is widely used in various high-voltage application scenarios, such as lightning protection, electronic pulse generators, high-voltage power supplies, industrial control and other fields.

[0051] 7) Low-voltage capacitor: A component that can store and release electrical energy, with a rated voltage usually between 400V and 6kV. The main function of this capacitor is to improve the power factor, thereby helping to reduce electricity costs, and can reduce the load on the equipment, increase the service life of the equipment, and reduce the line loss between the power supply end and the power consumption end.

[0052] In the related art, the design of voltage sensors using the principle of capacitor voltage division requires two high-voltage capacitors and one low-voltage capacitor to be connected in series. In order to ensure the accuracy of the sensor, the capacitance of the high-voltage capacitor and the low-voltage capacitor is usually calculated theoretically before the capacitor is produced. Due to the unstable process of producing capacitors, there is a deviation between the actual capacitance of the produced capacitors and the theoretical capacitance, and when selecting matching low-voltage capacitors for high-voltage capacitors, they need to be measured and matched one by one, resulting in low efficiency of capacitor assembly.

[0053] Specifically, the embodiment of the present application provides a method for capacitor grouping, obtaining the first actual capacitance values ​​of multiple first capacitors to group the first capacitors to obtain at least two first capacitor groups; determining the capacitance reference value of the second capacitor based on the first capacitor group, taking into account the production error factor and the measurement error factor; grading the second capacitor according to the second actual capacitance value of the second capacitor to obtain at least two second capacitor groups; obtaining the third capacitor and the fourth capacitor from two adjacent first capacitor groups, respectively, connecting the third capacitor and the fourth capacitor in series, and determining the capacitance value to be grouped according to the calculation formula, determining the target capacitor group from the second capacitor group according to the capacitance value to be grouped, and selecting any second capacitor, the third capacitor, and the fourth capacitor in the target capacitor group for grouping. Through the present application, the efficiency and accuracy of capacitor grouping can be improved.

[0054] The embodiments of the present application provide a capacitor grouping method, apparatus, device, computer-readable storage medium, and computer program product, which can improve the efficiency and accuracy of capacitor grouping. The following describes an exemplary application of the capacitor grouping device provided in the embodiments of the present application. The electronic device provided in the embodiments of the present application can be implemented as various types of terminals such as laptops, tablet computers, and desktop computers, and can also be implemented as a server.

[0055] See also Figure 1 , Figure 1 is a schematic diagram of the structure of an electronic device 400 provided in an embodiment of the present application, Figure 1 The electronic device 400 shown includes: at least one processor 410, a memory 450, at least one network interface 420 and a user interface 430. The various components in the electronic device 400 are coupled together via a bus system 440. It is understood that the bus system 440 is used to achieve connection and communication between these components. In addition to the data bus, the bus system 440 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, the bus system 440 is not described in detail. Figure 1 Various buses are labeled as bus system 440 .

[0056] The processor 410 may be an integrated circuit chip having signal processing capabilities, such as a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., wherein the general-purpose processor may be a microprocessor or any conventional processor, etc.

[0057] The user interface 430 includes one or more output devices 431 that enable presentation of media content, including one or more speakers and / or one or more visual display screens. The user interface 430 also includes one or more input devices 432, including user interface components that facilitate user input, such as a keyboard, mouse, microphone, touch screen display, camera, other input buttons and controls.

[0058] The memory 450 may be removable, non-removable, or a combination thereof. Exemplary hardware devices include solid-state memory, hard disk drives, optical disk drives, etc. The memory 450 may optionally include one or more storage devices that are physically remote from the processor 410.

[0059] The memory 450 includes a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), and the volatile memory may be a random access memory (RAM). The memory 450 described in the embodiments of the present application is intended to include any suitable type of memory.

[0060] In some embodiments, memory 450 can store data to support various operations, examples of which include programs, modules, and data structures, or a subset or superset thereof, as exemplarily described below.

[0061] Operating system 451, including system programs for processing various basic system services and performing hardware-related tasks, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks;

[0062] A network communication module 452, used to reach other electronic devices via one or more (wired or wireless) network interfaces 420, exemplary network interfaces 420 include: Bluetooth, Wireless LAN (WiFi), and Universal Serial Bus (USB), etc.;

[0063] a presentation module 453 for enabling presentation of information via one or more output devices 431 (e.g., display screen, speaker, etc.) associated with the user interface 430 (e.g., a user interface for operating peripherals and displaying content and information);

[0064] The input processing module 454 is used to detect one or more user inputs or interactions from one of the one or more input devices 432 and translate the detected inputs or interactions.

[0065] In some embodiments, the device provided in the embodiments of the present application can be implemented in software. Figure 1 The capacitor group matching device 455 stored in the memory 450 is shown, which can be software in the form of a program and a plug-in, including the following software modules: a first capacitor grouping module 4551, a capacitor reference value determination module 4552, a second capacitor grouping module 4553, a to-be-grouped capacitance value determination module 4554, and a capacitor group matching module 4555. These modules are logical, and therefore can be arbitrarily combined or further split according to the functions implemented. The functions of each module will be described below.

[0066] In other embodiments, the capacitor assembly device provided in the embodiments of the present application can be implemented in hardware. As an example, the device provided in the embodiments of the present application can be a processor in the form of a hardware decoding processor, which is programmed to execute the capacitor assembly method provided in the embodiments of the present application. For example, the processor in the form of a hardware decoding processor can adopt one or more application specific integrated circuits (Application Specific Integrated Circuit, ASIC), digital signal processors (Digital Signal Processor, DSP), programmable logic devices (Programmable Logic Device, PLD), complex programmable logic devices (Complex Programmable Logic Device, CPLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other electronic components.

[0067] In some embodiments, the terminal or server can implement the capacitor assembly method provided in the embodiments of the present application by running various computer executable instructions or computer programs. For example, the computer executable instructions may be microprogram-level commands, machine instructions or software instructions. The computer program may be a native program or software module in the operating system; it may be a native application (Application, APP), that is, a program that needs to be installed in the operating system to run, that is, a program that only needs to be downloaded to the browser environment to run. In short, the above-mentioned computer executable instructions may be instructions in any form, and the above-mentioned computer program may be an application, module or plug-in in any form.

[0068] The following describes the capacitor assembly method provided by the embodiment of the present application. As mentioned above, the electronic device implementing the capacitor assembly method of the embodiment of the present application can be a terminal, a server, or a combination of the two. Therefore, the execution subject of each step will not be repeatedly described below.

[0069] See also Figure 2A , Figure 2A is a flow chart of the capacitor assembly method provided in the embodiment of the present application, which will be combined with Figure 2A The steps shown are explained, Figure 2A The execution subject of the steps is an electronic device.

[0070] In step 101, first actual capacitances of a plurality of first capacitors are obtained.

[0071] In some embodiments, it is necessary to first wind a plurality of first capacitors. The first capacitors here can be understood as high-voltage capacitors, and after the plurality of first capacitors are wound, it is necessary to measure the actual capacitance of each first capacitor, or after the plurality of first capacitors are wound, it is necessary to randomly select a portion of the first capacitors from the plurality of first capacitors to measure their actual capacitance.

[0072] As an example of step 101, for example, after winding 6 first capacitors, the first actual capacitance values ​​of the 6 first capacitors are obtained to be 9.98 , 9.985 , 9.99 , 10.01 , 10.015 , 10.02 .

[0073] Alternatively, as another example of step 101, after 200 first capacitors are wound, for example, 20 first capacitors are randomly selected therefrom, and the first actual capacitance of each of the selected first capacitors is measured.

[0074] In step 102, the plurality of first capacitors are grouped based on the plurality of first actual capacitances to obtain at least two first capacitor groups.

[0075] In some embodiments, after obtaining the first actual capacitance values ​​of the plurality of first capacitors in step 101, it is necessary to perform statistics on the first actual capacitance values ​​of the plurality of first capacitors to obtain an average value of the first actual capacitance values. After that, the average As a reference value, the capacitors are grouped. In some embodiments, see Figure 2B , Figure 2A Step 102 shown can be implemented by the following steps 1021 to 1025, as shown below. Figure 2B Provide explanation.

[0076] In step 1021, a first capacitance average is determined based on a plurality of the first actual capacitances.

[0077] In some embodiments, after obtaining the first actual capacitance values ​​of the plurality of first capacitors in step 101, it is necessary to perform statistics on the first actual capacitance values ​​of the plurality of first capacitors to obtain a first capacitance average value of the first actual capacitance values. , can be obtained by the following formula (1):

[0078] (1)

[0079] in, is the first capacitance mean value, is the first actual capacitance of each first capacitor, is the number of the first capacitor, is the sum of the first actual capacitances of all first capacitors.

[0080] As an example of step 1021, the first capacitance average of the six first actual capacitances in the example of step 101 is calculated. , from the above formula (1) we can get .

[0081] In step 1022, a preset first coefficient and a second coefficient are obtained, wherein the first coefficient is greater than the second coefficient.

[0082] In some embodiments, the preset first coefficient and second coefficient are obtained in order to group the first capacitors, and the first coefficient and the second coefficient jointly determine the first capacitance range of each first capacitor group.

[0083] As an example of step 1022 , the first coefficient is 1.0005 and the second coefficient is 0.995.

[0084] In step 1023, a j-th first capacitance interval range is determined based on the first capacitance mean and the first coefficient.

[0085] It should be noted that j is an odd number greater than 0 and less than K, K is the total number of first capacitor groups, and K is an even number.

[0086] In some embodiments, the grouping method of the first capacitor group is related to whether it is an odd-numbered or even-numbered first capacitor group. Step 1023 illustrates that in the odd-numbered first capacitor group, the determined j-th first capacitance interval range can be obtained by the following formula (2):

[0087] (2)

[0088] in, is the first capacitance mean value, is the first coefficient, j=1, 3, 5,…, K-1.

[0089] In step 1024, a j+1th first capacitance interval range is determined based on the first capacitance mean and the second coefficient.

[0090] In some embodiments, the j+1th first capacitance interval range can be obtained by the following formula (3):

[0091] (3)

[0092] in, is the first capacitance mean value, is the second coefficient, j=1, 3, 5,…, K-1.

[0093] In step 1025, the plurality of first capacitors are grouped based on the first capacitance ranges to obtain at least two first capacitor groups.

[0094] In some embodiments, each first capacitance interval range is determined by step 1023 and step 1024. After determining each first capacitance interval range, the plurality of first capacitors are grouped to obtain at least two first capacitance groups. Here, each first capacitance interval range determined by step 1023 and step 1024 is specifically as follows:

[0095] No. 1: ;

[0096] No. 2: ;

[0097] No. 3: ;

[0098] No. 4: ;

[0099] ……;

[0100] The jth one: ;

[0101] j+1th: .

[0102] As an example of steps 1023, 1024, and 1025, in the example of step 1021 , in the example of step 1022, the first coefficient is 1.0005, the second coefficient is 0.995, and the ranges of the first capacitance value intervals are as follows:

[0103] No. 1: ;

[0104] No. 2: ;

[0105] No. 3: ;

[0106] No. 4: ;

[0107] ……;

[0108] K-1th: ;

[0109] Kth: .

[0110] Through step 1021 to step 1025, the first capacitors are grouped according to the first capacitance average of the first actual capacitance, thereby obtaining a first capacitor group. The plurality of first capacitors can be evenly grouped, thereby facilitating capacitor grouping.

[0111] In some embodiments, see Figure 2C , Figure 2B Step 1025 shown can be implemented by steps 10251 to 10258 as follows. Figure 2C Provide explanation.

[0112] In step 10251, a first target capacitance interval range within which the first actual capacitance of each of the first capacitors lies is determined.

[0113] In some embodiments, after the plurality of first capacitors are grouped to obtain the plurality of first capacitor groups in step 1025, it is necessary to determine the specific first target capacitance interval range of the first actual capacitance of the plurality of first capacitors in the plurality of first capacitor groups. In step 10252, each of the first capacitors is divided into a first candidate capacitor group corresponding to the first target capacitance interval range corresponding to each first capacitor.

[0114] In some embodiments, after step 10251, it is necessary to allocate the given multiple first capacitors to corresponding first capacitor groups according to the above rules to obtain multiple grouped first capacitor groups.

[0115] As an example of step 10251 and step 10252, in the example of step 101, the first actual capacitance values ​​of the six first capacitors are 9.98 , 9.985 , 9.99 , 10.01 , 10.015 , 10.02 According to the examples of steps 1021 to 1025, the first capacitor group of step 101 is specifically as follows:

[0116] The range of Group 1 is The first actual capacitance values ​​of the first capacitors in group 1 are 10.01 , 10.015 and 10.02 .

[0117] The range of Group 2 is The first actual capacitance values ​​of the first capacitors in the second group are 9.98 , 9.985 , 9.99 .

[0118] In step 10253, the difference in the number of first capacitors in the jth first candidate capacitor group and the j+1th first candidate capacitor group is determined.

[0119] In some embodiments, since each capacitor group matching process requires selecting a capacitor from the jth and j+1th first capacitor groups, in order to increase the utilization rate of the capacitors in each first capacitor group and reduce the pairing waste caused by the large difference in the number of capacitors in the jth and j+1th first capacitor groups, it is necessary to judge the difference in the number of capacitors in the jth and j+1th first capacitor groups. As an example of step 10253, it is assumed that after grouping, the number of capacitors in the first group is 100, the number of capacitors in the second group is 89, and the difference is 11.

[0120] In step 10254, a difference ratio is determined based on the quantity difference.

[0121] In some embodiments, to determine whether the number of first capacitors in each group of first candidate capacitor groups is too different, a difference ratio method can be used to determine whether the number of first capacitors in the jth and j+1th first candidate capacitor groups is different, and the difference is divided by the larger value of the number of capacitors in the two groups to obtain the difference ratio.

[0122] As an example of step 10254, based on the example of step 10253, the difference ratio between the number of capacitors in group 1 and group 2 is 11 / 100=11%.

[0123] In step 10255, determine whether there is a difference ratio greater than a preset ratio threshold.

[0124] Among them, when there is a difference ratio greater than the preset ratio threshold, enter step 10256, and when there is no difference ratio greater than the preset ratio threshold, enter step 10258.

[0125] In some embodiments, since each time a capacitor is paired, it is necessary to select a capacitor from the jth and j+1th first capacitor groups respectively, in order to increase the utilization rate of the capacitors in each first capacitor group and reduce the pairing waste caused by the large difference in the number of capacitors in the jth and j+1th first capacitor groups, it is necessary to judge the capacitance difference ratio and the ratio threshold in the jth and j+1th first capacitor groups. If the difference ratio is greater than the given ratio threshold, it is considered that the difference in the number of capacitors between the two groups is too large, which will cause capacitor waste in actual applications. At this time, it is necessary to reselect the reference value for the first capacitor group division; if the difference ratio is less than the given ratio threshold, it is considered that the difference in the number of capacitors between the two groups is small, and there is no need to reselect the reference value for the first capacitor group division.

[0126] As an example of step 10255, assuming that the preset ratio threshold is 10%, based on the example of step 10254, the difference ratio of the number of capacitors in group 1 and group 2 is 11%>10%. At this time, the difference in the number of capacitors in group 1 and group 2 is large, and the benchmark value for the first capacitor group needs to be reselected.

[0127] In step 10256, the first capacitance mean value is updated to obtain a new first capacitance mean value.

[0128] In some embodiments, when the first capacitance mean value is updated, there are two implementation methods:

[0129] The first method is to obtain a preset adjustment value, and determine a new first capacitance average value based on the adjustment value and the first capacitance average value.

[0130] The second manner: obtaining a preset number of first target capacitors from the plurality of first capacitors, and determining a new first capacitance average based on second actual capacitances of the preset number of first target capacitors.

[0131] In some embodiments, the first method mentioned above is specifically that the first capacitance mean value will increase or decrease the preset adjustment value for dynamic adjustment to determine a new first capacitance mean value until the first candidate capacitor group divided according to the new first capacitance mean value satisfies that there is no difference ratio greater than the preset ratio threshold.

[0132] In some embodiments, the second method mentioned above is specifically to obtain a part of the multiple first capacitors, i.e., a preset number of first target capacitors, from the whole of the multiple first capacitors, calculate the average value of the second actual capacitance of the preset number of first target capacitors, and use this average value as the new first capacitance mean value until the first candidate capacitor group divided according to the new first capacitance mean value satisfies that there is no difference ratio greater than the preset ratio threshold.

[0133] In step 10257, based on the new first capacitance average value, the plurality of first capacitors are grouped to obtain at least two first capacitor groups.

[0134] In some embodiments, at least two first capacitor groups obtained based on the new first capacitance average in step 10257 also need to perform the judgment of step 10255. The condition for ending the judgment is that when there is no difference ratio greater than the preset ratio threshold, step 10258 is entered.

[0135] In step 10258, the first candidate capacitor group is determined as the first capacitor group.

[0136] In some embodiments, the first candidate capacitor group is determined as the first capacitor group only when the judgment condition in step 10255 is satisfied that there is no difference ratio greater than the preset ratio threshold.

[0137] As an example of the first method of step 10256, step 10257 and step 10258, assuming that the preset adjustment value is 0.01, by calculating the first capacitance average Dynamic adjustment is performed to determine a new first capacitance mean value until the first candidate capacitor group divided according to the new first capacitance mean value satisfies that there is no difference ratio greater than the preset ratio threshold, and the first candidate capacitor group is determined as the first capacitor group.

[0138] As an example of the second method of step 10256, examples of step 10257 and step 10258, based on the example of step 101, the first actual capacitance values ​​of the six first capacitors are 9.98 , 9.985 , 9.99 , 10.01 , 10.015 , 10.02 Select 3 first actual capacitance values ​​of 9.985 , 10.01 , 10.02 As the second actual capacitance value, the average value of the second actual capacitance value is calculated to be 10.005 If the first candidate capacitor group divided according to the new first capacitance average has a difference ratio greater than the preset ratio threshold, in the second way of step 10256, a preset number of four first actual capacitances are selected again, such as 9.98 , 9.99 , 10.015 , 10.02 As the second actual capacitance value, the average value of the second actual capacitance value is calculated to be 10.005 This process is repeated until the first candidate capacitor group divided according to the new first capacitance average value satisfies that there is no difference ratio greater than the preset ratio threshold, and the first candidate capacitor group is determined as the first capacitor group.

[0139] Through steps 10251 to 10258, the first capacitors are divided into first candidate capacitor groups corresponding to the first target capacitance interval ranges, the difference in the number of capacitors in each j-th group and the j+1-th group is determined, and after the first candidate capacitor group is obtained by dynamically adjusting the division reference value of the first capacitor group, the difference in the number of capacitors in each j-th group and the j+1-th group of the first candidate capacitor group is determined, until a first candidate capacitor group that satisfies the difference in the number of capacitors in each j-th group and the j+1-th group is obtained as the first capacitor group. The above scheme further reduces the waste problem caused by the large difference in the number of capacitors when selecting the capacitors in the first capacitor group for series connection, and saves resource consumption.

[0140] Through step 1021 to step 1025, the grouping problem of multiple first capacitors is achieved, and multiple first capacitor groups are obtained, which provides a basis for the subsequent production of second capacitors, the division of second capacitor groups and capacitor group matching.

[0141] Continue to see Figure 2A In step 103, based on the first actual capacitance of each first capacitor of the at least two first capacitor groups, a first capacitance theoretical value, a second capacitance theoretical value and a capacitance reference value are determined, and the capacitance reference value is used to produce the second capacitor.

[0142] In some embodiments, the first capacitance theoretical value is the theoretical value of the maximum value of the series capacitance of the two first capacitance groups, and the second capacitance theoretical value is the theoretical value of the minimum value of the series capacitance of the two first capacitance groups. The theoretical average of the first capacitance theoretical value and the second capacitance theoretical value is calculated, and the capacitance reference value is obtained according to the theoretical average. The second capacitance is produced according to the capacitance reference value, that is, the capacitance reference value is used to produce the second capacitance. The second capacitance can be understood as a low-voltage capacitance. In some embodiments, see Figure 2D , Figure 2A The illustrated step 103 may be implemented by following steps 1031 to 1038, which are described in detail below.

[0143] In step 1031, a first maximum capacitance and a first minimum capacitance are determined based on first actual capacitances of each first capacitor of the first first capacitor group.

[0144] In some embodiments, in order to obtain the first theoretical capacitance value, it is necessary to determine the first maximum capacitance value and the first minimum capacitance value according to the first actual capacitance value of each first capacitor of the first first capacitance group.

[0145] As an example of step 1031, for example, the first actual capacitance of each first capacitor of the first first capacitor group is , , 10.11 , , then the first maximum capacitance is determined to be , the first minimum capacitance is 10 .

[0146] In step 1032, a second maximum capacitance and a second minimum capacitance are determined based on the first actual capacitance of each first capacitor in the second first capacitor group.

[0147] The first first capacitor group and the second second capacitor group are two first capacitor groups whose interval range is closest to the first capacitance mean value.

[0148] In some embodiments, in order to obtain the second theoretical capacitance value, it is necessary to determine the second maximum capacitance value and the second minimum capacitance value according to the first actual capacitance values ​​of the first capacitors of the second first capacitance group.

[0149] As an example of step 1032, for example, the first actual capacitance of each first capacitor of the second first capacitor group is , , 9.98 , , then the second maximum capacitance is determined to be The second minimum capacitance is 9.98 .

[0150] In step 1033, a second series capacitance is determined based on the first maximum capacitance and the second maximum capacitance.

[0151] In some embodiments, the first maximum capacitance in step 1031 and the second maximum capacitance in step 1032 need to be connected in series to determine a second series capacitance. It can be obtained by the following formula (4):

[0152] (4)

[0153] in, is the second series capacitance, is the first maximum capacitance, The second largest capacitance.

[0154] As an example of step 1033, according to the examples of steps 1031 and 1032, the first maximum capacitance is 10.15 The second maximum capacitance is 9.995 , from the above formula (4), we can get the second series capacitance .

[0155] In step 1034, a third series capacitance is determined based on the first minimum capacitance and the second minimum capacitance.

[0156] In some embodiments, the first minimum capacitance in step 1031 and the second minimum capacitance in step 1032 need to be connected in series to determine a third series capacitance. It can be obtained by the following formula (5):

[0157] (5)

[0158] in, is the third series capacitance, is the first minimum capacitance, The second smallest capacitance.

[0159] As an example of step 1034, according to the examples of steps 1031 and 1032, the first minimum capacitance is 10 The second minimum capacitance is 9.98 , from the above formula (5), we can get the third series capacitance .

[0160] In step 1035, a first capacitance theoretical value is determined based on the second series capacitance and a preset third coefficient.

[0161] In some embodiments, the second series capacitance and a preset third coefficient to determine the first capacitance theoretical value . It should be noted that the preset third coefficient is 999, and the third coefficient preset in step 1035 is consistent with the third coefficient in step 1036. When performing capacitor voltage division, for example, 5774 to 5.774, the voltage division ratio is 1000 times. For capacitance, capacitive reactance is inversely proportional to capacitance value. Therefore, from the perspective of capacitive reactance, low-voltage capacitance is one thousandth of high-voltage capacitance. Therefore, from the perspective of capacitance value, low-voltage capacitance is 1000 times of high-voltage capacitance, but in fact it is generally only enlarged by 999 times. This is because when the test instrument tests the high-voltage capacitance connected in series, there is a certain error with the actual theoretical calculation value, and the error is about one thousandth. Therefore, considering this error, the final low-voltage capacitance needs to be multiplied by 999 times based on the high-voltage capacitance, instead of 1000 times. Theoretical value of the first capacitance It can be obtained by the following formula (6):

[0162] (6)

[0163] in, is the second series capacitance, is the theoretical value of the first capacitance.

[0164] As an example of step 1035, according to the example of step 1033, According to the above formula (6), we can get .

[0165] In step 1036, a second capacitance theoretical value is determined based on the third series capacitance and the third coefficient.

[0166] In some embodiments, the third series capacitance and the third coefficient to determine the second capacitance theoretical value It should be noted that the third coefficient in step 1036 is consistent with the third coefficient in step 1035, both of which are 999. Theoretical value of the second capacitance It can be obtained by the following formula (7):

[0167] (7)

[0168] in, is the theoretical value of the second capacitance, is the third series capacitance.

[0169] As an example of step 1036, according to the example of step 1034, According to the above formula (7), we can get .

[0170] In step 1037, a second capacitance average value is determined based on the first capacitance theoretical value and the second capacitance theoretical value.

[0171] In some embodiments, the second capacitance average is an average of the first capacitance theoretical value and the second capacitance theoretical value. It can be obtained by the following formula (8):

[0172] (8)

[0173] in, is the second capacitance mean, is the theoretical value of the first capacitance, is the theoretical value of the second capacitance.

[0174] As an example of step 1037, according to the examples of step 1035 and step 1036, , According to the above formula (8), we can get .

[0175] In step 1038, a capacitance reference value is determined based on the second capacitance mean value and a preset fourth coefficient.

[0176] In some embodiments, the second capacitance mean value obtained in step 1037 cannot be directly used as the production value of the second capacitor. It is necessary to consider the error, that is, the preset fourth coefficient, and calibrate the second capacitance mean value to obtain the capacitance reference value. The preset fourth coefficient here can be determined based on the error between the theory and the actual measurement after the preset high-voltage capacitor is connected in series, the measurement error considered after theoretical calculation, the capacitance change caused by thermal setting, and the positive bias of the assembly. In some embodiments, the fourth coefficient = the error between the theory and the actual measurement after the high-voltage capacitor is connected in series × the measurement error considered after theoretical calculation × the capacitance change caused by thermal setting × (1-positive bias of the assembly).

[0177] For example, the error between the theory and actual measurement of high-voltage capacitors in series is 0.9985, the measurement error considered after theoretical calculation is 1.003, the capacitance change caused by heat setting is 0.9977, and the combined forward bias is 0.15%, then the fourth coefficient == 0.9985 × 1.003 × 0.9977 × 0.9985, which is 0.99769. It should be noted that the combined forward bias is to eliminate the error between the theoretical value and the actual value of the series capacitance. For example, the actual measured capacitance of the two high-voltage capacitors is 10 According to the theory, the series capacitance obtained after series connection should be 5 , but the actual measured series capacitance is slightly less than 5 . Capacitance reference value It can be obtained by the following formula (9):

[0178] (9)

[0179] in, is the capacitance reference value, is the second capacitance mean, and 0.99769 is the preset fourth coefficient.

[0180] As an example of step 1038, according to the example of step 1037, According to the above formula (9), the capacitance reference value can be obtained .

[0181] Through steps 1031 to 1038, the production value of the second capacitor, i.e., the capacitance reference value, is determined based on the first capacitor, which can ensure that in the subsequent capacitor assembly process, the first capacitor and the second capacitor have a higher assembly efficiency; and steps 1031 and 1032 take the maximum error into consideration for the selection method of the first capacitor, which can ensure that the capacitance reference value of the second capacitor determined based on the first capacitor meets the requirements.

[0182] Continue to see Figure 2A In step 104, after a plurality of second capacitors are produced based on the capacitance reference value, second actual capacitance values ​​of the plurality of second capacitors are obtained.

[0183] It should be noted that the second capacitor is produced based on the capacitance reference value. In some embodiments, although the second capacitor is produced strictly according to the capacitance reference value, due to the instability of the manufacturing process and the environment, the second actual capacitance of the second capacitor may be different, so it is necessary to measure the second actual capacitance of the second capacitor.

[0184] As an example of step 104, for example, the second capacitor produced according to the example of step 1038 should theoretically be 4998.91028 The actual capacitance of the second capacitor is 4997.52. ,4998.65 ,4999.102 ,4999.3 ,4998.72 4998.21 .

[0185] Through step 104, the second actual capacitance of the produced second capacitor can be obtained, and the relevant information of the second capacitor is determined based on the relevant information of the first capacitor, which can reduce a large number of measurements and calculations in the capacitor assembly process. This determination method can make the first capacitor and the second capacitor more compatible and improve the capacitor assembly efficiency.

[0186] In step 105, the plurality of second capacitors are divided into at least two second capacitor groups based on the first capacitance theoretical value and the second capacitance theoretical value.

[0187] In some embodiments, in order to achieve an efficient capacitor grouping process, the second capacitors need to be grouped to obtain a second capacitor group; the second capacitor group is determined by the first capacitor theoretical value and the second capacitor theoretical value.

[0188] In some embodiments, see Figure 2E , Figure 2A The illustrated step 105 can be implemented by following the steps 1051 to 1052, which are described in detail below.

[0189] In step 1051, a plurality of second capacitance interval ranges are determined based on the first capacitance theoretical value, the second capacitance theoretical value, a preset fifth coefficient, and a preset sixth coefficient.

[0190] In some embodiments, the first capacitance theoretical value is obtained by step 1035 and step 1036 to obtain the second capacitance theoretical value All need to retain 3 significant figures after the decimal point, the preset fifth coefficient is 1.0005, and the sixth coefficient is 0.9995. The multiple second capacitance value intervals are determined as follows:

[0191] No. 1: ;

[0192] No. 2: ;

[0193] No. 3: ;

[0194] ……;

[0195] Until: .

[0196] As an example of step 1051, according to the examples of steps 1035 and 1036, , , the determined multiple second capacitance value interval ranges are as follows:

[0197] No. 1: ;

[0198] No. 2: ;

[0199] No. 3: ;

[0200] ……;

[0201] Until: .

[0202] In step 1052, the plurality of second capacitors are grouped based on the second capacitance ranges to obtain at least two second capacitor groups.

[0203] In some embodiments, after the multiple second capacitance ranges are determined in step 1051, the multiple second capacitors need to be grouped according to the multiple second capacitance ranges and the second actual capacitance.

[0204] As an example of step 1052, for example, the second actual capacitance of a second capacitor is 5029.12 According to the example in step 1051, 5029.12 In fact, it falls in the last one of the multiple second capacitance ranges, so the second actual capacitance is 5029.12 The second capacitor is allocated to the last one of the multiple second capacitance ranges, and the remaining second capacitors are subjected to the same operation until all second capacitor allocations are completed.

[0205] Through step 1051 to step 1052, the second capacitors are grouped to obtain a second capacitor group. In the subsequent capacitor grouping process, the corresponding second capacitor group can be directly selected after calculation, thereby improving the capacitor grouping efficiency.

[0206] Continue to see Figure 2A In step 106, a third capacitor and a fourth capacitor are respectively obtained from two adjacent first capacitor groups.

[0207] In some embodiments, two adjacent first capacitors are the i-th and i+th, respectively, wherein i is any odd number greater than 0 and less than K, K is the total number of first capacitor groups, and K is an even number. In some embodiments, two first capacitors need to be selected in series during the capacitor group matching process, and the value of the above i is actually an odd number such as 1, 3, 5, 7, etc., which means that the capacitor groups selected each time are the 1st group and the 2nd group, the 3rd group and the 4th group, ..., the K-1th group and the Kth group, respectively, and the total number of first capacitor groups is an even number, which can ensure that each i-th group has a corresponding i+1th group, and the way of selecting the third capacitor and the fourth capacitor in step 106 ensures that each first capacitor can be selected in pairs, which not only ensures the logic of pairing, but also reduces the problem of capacitor waste caused by mismatching.

[0208] As an example of step 106, for example, actual capacitance values ​​of 10 are selected from the fifth group and the sixth group respectively. The actual capacitance of the third capacitor is 9.998 The fourth capacitor.

[0209] In step 107, a first series capacitance of the third capacitor and the fourth capacitor connected in series is determined.

[0210] In some embodiments, when step 107 is implemented, a third actual capacitance of the third capacitor and a fourth actual capacitance of the fourth capacitor under the current test environment are obtained, and then a first series capacitance is determined based on the third actual capacitance and the fourth actual capacitance. The first series capacitance It can be obtained by the following formula (10):

[0211] (10)

[0212] in, is the first series capacitance, is the third actual capacitance of the third capacitor, is a fourth actual capacitance of the fourth capacitor.

[0213] Here, the actual capacitance value corresponding to the current test environment is obtained. Since there is an error in the capacitance value measured at different times and in different temperature and humidity environments, it is necessary to implement the measurement in the current environment.

[0214] As an example of step 107, the third actual capacitance of the third capacitor under the current test environment is measured to be 10.1 The actual capacitance of the fourth capacitor is 9.995 According to formula (10), the first series capacitance is 5.024 .

[0215] In step 108, a capacitance value to be assembled is determined based on the first series capacitance value.

[0216] In some embodiments, the standard comparison value and the matching coefficient are first obtained, and then the product of the first series capacitance, the standard comparison value and the matching coefficient is determined as the capacitance to be matched. Here, the calculation of the capacitance to be matched needs to take into account the measurement error of the capacitor at different times and in different temperature and humidity environments, and should be measured in the current environment. The capacitance to be matched can be obtained by the following formula (11):

[0217] Capacitance to be assembled = first series capacitance Combination formula Standard comparison value (11)

[0218] Where, combination formula = measurement error considered after theoretical calculation Combination positive bias = 1.003 0.9985=0.999, that is, the combination formula is a constant of 0.999. The combination positive bias used here is consistent with the combination positive bias involved in step 1037.

[0219] As an example of step 108, assume that there are two first capacitors whose actual capacitance values ​​measured in history are both 10 The actual capacitance value currently measured is 10.1 According to the following formula (12), the standard comparison value is 1.01. According to the above formula (11), the capacity value to be assembled is .

[0220] Step 108 comprehensively considers the measurement error and the environmental error, calculates and obtains the value of the capacitance to be assembled. The method of obtaining the capacitance to be assembled by calculation can reduce a large number of measurement and assembly processes, thereby improving the efficiency of capacitor assembly.

[0221] In some embodiments, see Figure 3 ,exist Figure 2A Before step 108 shown, steps 201 to 209 may also be performed to determine a standard comparison value, which will be described in detail below.

[0222] In step 201, a fifth capacitor is obtained from the jth first capacitor group.

[0223] In step 202, a sixth capacitor is obtained from the j+1th first capacitor group.

[0224] In some embodiments, j is an odd number greater than 0 and less than K, K is the total number of first capacitor groups, and K is an even number. In order to determine the standard comparison value, steps 201 and 202 obtain multiple fifth capacitors and sixth capacitors in multiple j-th and j+1-th first capacitor groups, respectively, and the fifth capacitor in each j-th first capacitor group and the sixth capacitor in the j+1-th first capacitor group form a fifth capacitor and a sixth capacitor pair. Steps 201 and 202 actually obtain multiple fifth capacitor and sixth capacitor pairs.

[0225] In step 203, a fifth actual capacitance of the fifth capacitor under the current test environment is obtained.

[0226] In step 204, a sixth actual capacitance of the sixth capacitor under the current test environment is obtained.

[0227] In some embodiments, there are errors in the measurement of capacitance at different times and in different temperature and humidity environments, and the fifth actual capacitance of the fifth capacitor and the sixth actual capacitance of the sixth capacitor should be remeasured in the current environment.

[0228] As an example of step 203 and step 204, assume that the fifth actual capacitance and the sixth actual capacitance of two first capacitors remeasured in the current environment are both 10.1 .

[0229] In step 205, a first historical capacitance value of the fifth capacitor under a historical test environment is obtained.

[0230] In step 206, a second historical capacitance value of the sixth capacitor under a historical test environment is obtained.

[0231] In some embodiments, the historical test environment is the environment in which the first actual capacitances of multiple groups of first capacitors are measured in step 101, that is, the first historical capacitance of the fifth capacitor and the second historical capacitance of the sixth capacitor can be the corresponding first actual capacitances measured in step 101.

[0232] As an example of step 205 and step 206, assume that the first historical capacitance value of the fifth capacitor and the second historical capacitance value of the sixth capacitor are both 10 .

[0233] In step 207, a first ratio of the fifth actual capacitance value to the first historical capacitance value is determined.

[0234] In step 208, a second ratio of the sixth actual capacitance value to the second historical capacitance value is determined.

[0235] In step 209, a standard comparison value is determined based on the first ratio and the second ratio.

[0236] In some embodiments, the measurement error ratio between the current measurement environment and the historical measurement environment is calculated, which is the standard comparison value. The standard comparison value can be obtained by the following formula (12):

[0237] (12)

[0238] in, is the actual capacitance value currently measured, is the actual capacitance value measured in history, arbitrarily select multiple groups of first capacitors, measure the actual capacitance value of each group of first capacitors under the current environment, make a quotient of the actual capacitance value currently measured of each group of first capacitors and the actual capacitance value measured in history, and take the average value of the quotient as the standard comparison value. It should be noted that each group of first capacitors is composed of one first capacitor selected from two adjacent first capacitor groups in step 106, the actual capacitance value measured in history is measured in step 101, and each first capacitor corresponds to an actual capacitance value measured in history.

[0239] As an example of steps 207 to 209, based on the examples of steps 203 and 204 and steps 205 and 206, it is assumed that the fifth actual capacitance and the sixth actual capacitance of two first capacitors remeasured in the current environment are both 10.1 The first historical capacitance value of the fifth capacitor and the second historical capacitance value of the sixth capacitor are both 10 According to the above formula (12), the standard comparison value .

[0240] In step 201 to step 209, the standard comparison value is calculated by combining the current measurement value with the historical measurement value, which can take into account the measurement error problem in different environments, reduce the influence of the error, and improve the accuracy of the calculated capacity value to be assembled.

[0241] Continue to see Figure 2A In step 109, a target capacitor group is determined from the at least two second capacitor groups based on the capacitance values ​​to be grouped.

[0242] In some embodiments, after obtaining the capacitance value to be assembled in step 108, it is necessary to determine the specific second capacitor group where the capacitance value to be assembled is located among multiple second capacitor groups based on the capacitance value to be assembled, that is, the target capacitor group.

[0243] As an example of step 109, assume that the capacity to be configured is ,by The second capacitor groups are determined as a reference. The specific second capacitor group is assumed to be the fifth group, that is, the target capacitor group is the fifth group among the multiple second capacitor groups.

[0244] In step 110 , any second capacitor, the third capacitor, and the fourth capacitor in the target capacitor group are assembled.

[0245] In some embodiments, the capacitor grouping needs to group three capacitors, where the three capacitors are a third capacitor, a fourth capacitor, and any second capacitor in the target capacitor group.

[0246] As an example of step 110, according to the example of step 109, the target capacitor group is the fifth group of the plurality of second capacitor groups, and a second capacitor is randomly selected from the fifth group of the plurality of second capacitor groups, assuming that the actual capacitance of the second capacitor is .

[0247] Through step 109 and step 110, the target capacitor group where the capacitance to be assembled is located can be determined, and any second capacitor in the target capacitor group is selected to be assembled with the third capacitor and the fourth capacitor. In this process, there is no need to calculate the matching degree of the capacitors to be assembled one by one, thereby achieving efficient capacitor assembly.

[0248] The following is an explanation of an exemplary application of the embodiments of the present application in a practical application scenario.

[0249] The design of a voltage sensor using the capacitor voltage division principle requires two high-voltage capacitors and one low-voltage capacitor to be connected in series. In order to ensure the accuracy of the sensor, the capacitance of the high-voltage capacitor and the low-voltage capacitor is usually calculated theoretically before the capacitor is produced. Due to the unstable process of producing capacitors, the actual capacitance of the produced capacitors deviates from the theoretical capacitance, and when selecting matching low-voltage capacitors for high-voltage capacitors, they need to be measured and matched one by one, resulting in low efficiency of capacitor matching.

[0250] Based on this, an embodiment of the present application provides a high- and low-voltage capacitor matching method. After a batch of high-voltage capacitors are produced, the actual capacitance of each high-voltage capacitor is measured and the high-voltage capacitors are classified; then, high-voltage capacitors are selected from the first and second grades, and the target capacitance of the low-voltage capacitor is determined based on the actual capacitance of the selected high-voltage capacitor, while taking into account production error factors and measurement error factors; then, a batch of low-voltage capacitors are produced according to the target capacitance of the low-voltage capacitor, and the low-voltage capacitors are classified according to the actual capacitance of the low-voltage capacitor; when pairing the high- and low-voltage capacitors, one high-voltage capacitor is selected from the Nth high-voltage grade and the N+1th high-voltage grade respectively, and connected in series, and then, according to the calculation of the relevant formula, one low-voltage capacitor is arbitrarily taken out from the corresponding low-voltage grade, so that the selected low-voltage capacitor is assigned to the two high-voltage capacitors, thereby improving the capacitor matching efficiency.

[0251] The implementation scheme of the embodiment of the present application can be implemented by the following steps:

[0252] Step 1: Classify the high voltage capacitors.

[0253] First, wind the high-voltage capacitors. After the high-voltage capacitors are wound, measure the actual capacitance of each high-voltage capacitor; then count the actual capacitance values ​​to find the average value of the actual capacitance values. , can be obtained by the following formula (13):

[0254] (13)

[0255] in, is the first capacitance mean value, is the first actual capacitance of each first capacitor, is the number of the first capacitor, is the sum of the first actual capacitances of all first capacitors.

[0256] Then, the average value of the actual capacitance As a benchmark, multiple high-voltage capacitors are divided into different grades. The following are the different high-voltage grades:

[0257] 1st gear: ;

[0258] 2nd gear: ;

[0259] 3rd gear: ;

[0260] 4th gear: ;

[0261] ……;

[0262] Nth gear: ;

[0263] N+1th gear: ;

[0264] Among them, N is an odd number, and all high-voltage capacitors need to be divided into grades, generally 7 to 9 grades.

[0265] It should be noted that if the difference in the capacitance of the first and second gears is found to be large after the first and second gears are divided, the reference value can be re-selected. ， Try to ensure that the number of capacitors in odd-numbered gears N and N+1 is close. This is because when the high and low voltage capacitors are subsequently assembled, it is necessary to take a high voltage capacitor from each of the Nth gear and the N+1th gear, and then take a low voltage capacitor from the corresponding low voltage gear to pair with these two high voltage capacitors. If the number of capacitors in the Nth gear and the N+1th gear is very different, there will be a large number of surplus high voltage capacitors in the Nth gear or the N+1th gear, resulting in waste.

[0266] Here, when judging whether the difference in the number of capacitors in the first gear and the second gear is large, three methods can be included. The first is difference judgment, which directly calculates the difference in the number of capacitors in the first gear and the second gear. When the difference is greater than a given difference threshold, it is considered that the difference in the number of capacitors in the first gear and the second gear is large; the second is quantity ratio judgment, which divides the larger value of the number of capacitors in the two gears by the smaller value of the number of capacitors. If the ratio obtained is greater than a given ratio threshold, it is considered that the difference in the number of capacitors in the first gear and the second gear is large, where the ratio threshold is a number greater than 1; the third is percentage judgment, which calculates the difference in the number of capacitors in the first gear and the second gear, and divides the difference by the larger value of the number of capacitors in the two gears. If the percentage obtained is greater than a given percentage threshold, it is considered that the difference in the number of capacitors in the first gear and the second gear is large. For example, there are 100 capacitors in the first gear and 90 capacitors in the second gear. The preset percentage threshold is 10%, and the difference ratio is (100-90) / 100=10%. When the difference ratio is greater than 10%, it is considered that the difference in the number of capacitors between the first gear and the second gear is too large. At the same time, the difference in the number of capacitors between other adjacent gears also needs to be judged by the above method to further ensure that the difference in the number of capacitors between the Nth gear and the N+1th gear is small, where N is an odd number starting from 0.

[0267] It should be noted that, in fact, according to the obtained The capacitors are divided into different grades by value, and there is basically no problem of too large a difference in the number of capacitors in the two grades. However, when this problem occurs, there are two solutions. The first is to adjust the current The value is increased or decreased by a fixed value, such as 0.1, and the dynamic The value is adjusted to find a new one that meets the conditions The second method is to randomly select some high-voltage capacitors from all high-voltage capacitors, calculate the average value of the selected high-voltage capacitors, and use it as the new value.

[0268] Step 2: Determine the inter-winding capacitance value of the low-voltage capacitor.

[0269] First, calculate the capacitance of the maximum value capacitor in the first tier and the maximum value capacitor in the second tier in series. , and the capacitance of the smallest capacitor in the first gear and the smallest capacitor in the second gear connected in series , the capacitance of the capacitors connected in series can be obtained by the following formula (14) and formula (15):

[0270] (14)

[0271] (15)

[0272] in, and is the capacitance of the high-voltage capacitors connected in series, Represents the maximum value in the first level, Represents the maximum value in the second level, Represents the minimum value in the first tier, Represents the minimum value in the 2nd gear. It should be noted that this method of selecting high-voltage capacitors takes into account the maximum error.

[0273] and Theoretical value of low voltage capacitance required and It can be obtained by the following formula (16) and formula (17):

[0274] (16)

[0275] (17)

[0276] It should be noted that when performing capacitor voltage division, for example, 5774 to 5.774, the voltage division ratio is 1000 times. For capacitors, capacitive reactance is inversely proportional to the capacitance value, so from the perspective of capacitive reactance, low-voltage capacitors are one thousandth of high-voltage capacitors, and from the perspective of capacitance value, it becomes 1000 times. Theoretically, the capacitance value needs to be increased by 1000 times, but in actual calculations it is increased by 999 times. This is because when the test instrument tests the high-voltage capacitors connected in series, there is a certain error with the actual theoretical calculation value, and this error is about one thousandth. Therefore, considering this error, the capacitance value is increased by 999 times in actual calculations.

[0277] Then, calculate the theoretical value of low-voltage capacitance and The theoretical average , can be obtained by the following formula (18):

[0278] (18)

[0279] The actual required winding low-voltage capacitor value is ,in Capacitance change caused by heat setting Combination positive bias = It should be noted that, for example, the actual measured capacitance of the two high-voltage capacitors is 10 According to the theory, the series capacitance obtained after series connection should be 5 , but the actual measured series capacitance is slightly less than 5 The purpose of the forward bias is to eliminate the error between the theoretical value and the actual value of the series capacitor. With this goal in mind, we are producing a batch of low voltage capacitors.

[0280] Step 3: Classify the low-voltage capacitors.

[0281] First, the theoretical value of low-voltage capacitance and The rounding method is used to retain 3 significant figures after the decimal point, and the theoretical value of low-voltage capacitance with 3 significant figures after the decimal point is retained. and Set multiple low-voltage levels. The following are multiple low-voltage levels:

[0282] 1st gear: ;

[0283] 2nd gear: ;

[0284] 3rd gear: ;

[0285] ……;

[0286] Until: ;

[0287] Then, the actual capacitance value of each low-voltage capacitor is measured, and each low-voltage capacitor is placed in a corresponding low-voltage bin according to the actual capacitance value.

[0288] Step 4: High and low voltage capacitor assembly process.

[0289] When assembling high and low voltage capacitors, first select one high voltage capacitor in the Nth high voltage bin and the N+1th high voltage bin respectively to connect in series, and measure the actual capacitance after the series connection. Then calculate the low voltage capacitor value to be assembled, which can be obtained by the following formula (19):

[0290] The low voltage capacitance value to be assembled = the actual capacitance value Combination formula Standard comparison value (19)

[0291] Where, combination formula = measurement error considered after theoretical calculation Combination positive bias = 1.003 0.9985=0.999, that is, the combination formula is a constant of 0.999. The combination positive bias used here is consistent with the combination positive bias involved in step 2.

[0292] Here, the calculation of the low-voltage capacitance value to be assembled needs to take into account the measurement error of the capacitance at different times and in different temperature and humidity environments. The measurement should be performed in the current environment, and the measurement error ratio between the current measurement environment and the historical measurement environment should be calculated, which is the standard comparison value. The standard comparison value can be obtained by the following formula (20):

[0293] (20)

[0294] in, is the currently measured capacitance value, It is the capacitance value measured historically, and multiple groups of high-voltage capacitors are randomly selected, and the capacitance value of each group of high-voltage capacitors under the current environment is measured. The capacitance value currently measured of each group of high-voltage capacitors is divided by the capacitance value measured historically, and the average value of the quotient is taken as the standard comparison value. It should be noted that each group of high-voltage capacitors is composed of high-voltage capacitors selected from the Nth high-voltage sub-level and the N+1th high-voltage sub-level in step 4, and the capacitance value measured historically is measured in step 1, and each high-voltage capacitor corresponds to a capacitance value measured historically.

[0295] According to the calculated low-voltage capacitor value to be assembled and the low-voltage bin it falls into, select a low-voltage capacitor to pair with the selected high-voltage capacitor. Assume that the calculated low-voltage capacitor value to be assembled is X, and X is in the low-voltage bin Select a low voltage capacitor from the low voltage grade to assemble.

[0296] By performing capacitor assembly according to steps 1 to 4 above, the efficiency of capacitor assembly can be improved.

[0297] The following is a description of an exemplary structure of the capacitor assembly device 455 provided in the embodiment of the present application as a software module. In some embodiments, see Figure 1 , the software modules stored in the capacitor group matching device 455 of the memory 450 may include:

[0298] A first capacitor grouping module 4551 is used to obtain first actual capacitance values ​​of a plurality of first capacitors, and group the plurality of first capacitors based on the plurality of first actual capacitance values ​​to obtain at least two first capacitor groups;

[0299] A capacitance reference value determination module 4552, configured to determine a first capacitance theoretical value, a second capacitance theoretical value, and a capacitance reference value based on the first actual capacitance of each first capacitor of the at least two first capacitor groups, wherein the capacitance reference value is used to produce the second capacitor;

[0300] A second capacitor grouping module 4553 is used to obtain second actual capacitances of the plurality of second capacitors after producing the plurality of second capacitors based on the capacitance reference value, and to divide the plurality of second capacitors into at least two second capacitor groups based on the first capacitance theoretical value and the second capacitance theoretical value;

[0301] The module 4554 for determining the capacitance value to be grouped is used to obtain the third capacitor and the fourth capacitor from two adjacent first capacitor groups, respectively, determine the first series capacitance value after the third capacitor and the fourth capacitor are connected in series, and determine the capacitance value to be grouped based on the first series capacitance value;

[0302] The capacitor grouping module 4555 is used to determine a target capacitor group from the at least two second capacitor groups based on the capacitance to be grouped, and to group any second capacitor, the third capacitor, and the fourth capacitor in the target capacitor group.

[0303] In some embodiments, the first capacitor grouping module 4551 is also used to determine a first capacitance mean based on multiple first actual capacitances; obtain a preset first coefficient and a second coefficient, the first coefficient being greater than the second coefficient; determine the jth first capacitance interval range based on the first capacitance mean and the first coefficient, j is an odd number greater than 0 and less than K, K is the total number of first capacitor groups, and K is an even number; determine the j+1th first capacitance interval range based on the first capacitance mean and the second coefficient; and group the multiple first capacitors based on each first capacitance interval range to obtain at least two first capacitor groups.

[0304] In some embodiments, the first capacitor grouping module 4551 is further used to determine the first target capacitance interval range where the first actual capacitance of each first capacitor is located; divide each first capacitor into a first candidate capacitor group corresponding to the first target capacitance interval range corresponding to each first capacitor; determine the difference in the number of first capacitors in the jth first candidate capacitor group and the j+1th first candidate capacitor group; determine the difference ratio based on the difference in the number, and when there is a difference ratio greater than a preset ratio threshold, update the first capacitance mean to obtain a new first capacitance mean; based on the new first capacitance mean, group the multiple first capacitors to obtain at least two first capacitor groups. When there is no difference ratio greater than the preset ratio threshold, determine the first candidate capacitor group as the first capacitor group.

[0305] In some embodiments, the first capacitor grouping module 4551 is also used to obtain a preset adjustment value, and determine a new first capacitance average based on the adjustment value and the first capacitance average; or, obtain a preset number of first target capacitors from the multiple first capacitors; and determine a new first capacitance average based on the second actual capacitance of the preset number of first target capacitors.

[0306] In some embodiments, the capacitance reference value determination module 4552 is also used to determine the first maximum capacitance and the first minimum capacitance based on the first actual capacitance of each first capacitor in the first first capacitor group; determine the second maximum capacitance and the second minimum capacitance based on the first actual capacitance of each first capacitor in the second first capacitor group; determine the second series capacitance based on the first maximum capacitance and the second maximum capacitance, and determine the third series capacitance based on the first minimum capacitance and the second minimum capacitance; determine the first capacitance theoretical value based on the second series capacitance and a preset third coefficient, and determine the second capacitance theoretical value based on the third series capacitance and the third coefficient; determine the second capacitance mean value based on the first capacitance theoretical value and the second capacitance theoretical value, and determine the capacitance reference value based on the second capacitance mean value and a preset fourth coefficient.

[0307] In some embodiments, the second capacitor grouping module 4553 is also used to determine multiple second capacitance ranges based on the first capacitance theoretical value, the second capacitance theoretical value, a preset third coefficient and a fourth coefficient; based on each second capacitance range, the multiple second capacitors are grouped to obtain at least two second capacitor groups.

[0308] In some embodiments, the module 4554 for determining the capacitance to be assembled is further used to obtain a third actual capacitance of the third capacitor and a fourth actual capacitance of the fourth capacitor under the current test environment; determine a first series capacitance based on the third actual capacitance and the fourth actual capacitance; obtain a standard comparison value and a matching coefficient; and determine the product of the first series capacitance, the standard comparison value and the matching coefficient as the capacitance to be assembled.

[0309] The embodiment of the present application provides a computer program product, which includes a computer program or a computer executable instruction, and the computer program or the computer executable instruction is stored in a computer readable storage medium. The processor of the electronic device reads the computer executable instruction from the computer readable storage medium, and the processor executes the computer executable instruction, so that the electronic device executes the capacitor group matching method described in the embodiment of the present application.

[0310] An embodiment of the present application provides a computer-readable storage medium, which stores computer-executable instructions or a computer program. When the computer-executable instructions or the computer program are executed by a processor, the processor will execute the capacitor assembly method provided in the embodiment of the present application.

[0311] In some embodiments, the computer-readable storage medium may be a memory such as RAM, ROM, flash memory, magnetic surface memory, optical disk, or CD-ROM; or may be various devices including one or any combination of the above memories.

[0312] In some embodiments, computer executable instructions may be in the form of a program, software, software module, script or code, written in any form of programming language (including compiled or interpreted languages, or declarative or procedural languages), and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine or other unit suitable for use in a computing environment.

[0313] As an example, computer-executable instructions may, but need not, correspond to a file in a file system, may be stored as part of a file storing other programs or data, such as in one or more scripts in a HyperText Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files storing one or more modules, subroutines, or code portions).

[0314] As an example, computer executable instructions may be deployed to be executed on one electronic device, or on multiple electronic devices located at one site, or on multiple electronic devices distributed at multiple sites and interconnected by a communication network.

[0315] In summary, the efficiency of capacitor assembly can be improved through the embodiments of the present application.

[0316] The above is only an embodiment of the present application and is not intended to limit the protection scope of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present application are included in the protection scope of the present application.

Claims

1. A capacitor assembly method, characterized in that: The method comprises: Acquire first actual capacitances of a plurality of first capacitors, and group the plurality of first capacitors based on the plurality of first actual capacitances to obtain at least two first capacitor groups; Determine a first capacitance theoretical value, a second capacitance theoretical value and a capacitance reference value based on the first actual capacitance of each first capacitor of the at least two first capacitance groups, wherein the capacitance reference value is used to produce the second capacitor; After producing a plurality of second capacitors based on the capacitance reference value, obtaining second actual capacitance values ​​of the plurality of second capacitors, and dividing the plurality of second capacitors into at least two second capacitor groups based on the first capacitance theoretical value and the second capacitance theoretical value; respectively obtaining a third capacitor and a fourth capacitor from two adjacent first capacitor groups, determining a first series capacitance after the third capacitor and the fourth capacitor are connected in series, and determining a capacitance to be grouped based on the first series capacitance; A target capacitor group is determined from the at least two second capacitor groups based on the capacitance value to be assembled, and any second capacitor, the third capacitor, and the fourth capacitor obtained from the target capacitor group are assembled.

2. The method according to claim 1, characterized in that The step of grouping the plurality of first capacitors based on the plurality of first actual capacitances to obtain at least two first capacitor groups comprises: Determining a first capacitance average based on the plurality of first actual capacitances; Obtaining a preset first coefficient and a second coefficient, wherein the first coefficient is greater than the second coefficient; Based on the first capacitance mean and the first coefficient, determine the jth first capacitance interval range, where j is an odd number greater than 0 and less than K, K is the total number of first capacitor groups, and K is an even number; Determine a j+1th first capacitance interval range based on the first capacitance mean and the second coefficient; Based on the first capacitance ranges, the plurality of first capacitors are grouped to obtain at least two first capacitor groups.

3. The method according to claim 2, characterized in that The method of grouping the plurality of first capacitors based on the respective first capacitance value intervals to obtain at least two first capacitor groups includes: Determine a first target capacitance value interval range within which a first actual capacitance value of each of the first capacitors lies; Divide each of the first capacitors into a first candidate capacitor group corresponding to a first target capacitance interval range; Determine a difference in the number of first capacitors in the jth first candidate capacitor group and the j+1th first candidate capacitor group; Determine a difference ratio based on the quantity difference, and when there is a difference ratio greater than a preset ratio threshold, update the first capacitance mean to obtain a new first capacitance mean; Based on the new first capacitance average value, the plurality of first capacitors are grouped to obtain at least two first capacitor groups.

4. The method according to claim 3, characterized in that The step of grouping the plurality of first capacitors based on the first capacitance value intervals to obtain at least two first capacitor groups further includes: When there is no difference ratio greater than the preset ratio threshold, the first candidate capacitor group is determined as the first capacitor group.

5. The method according to claim 3, characterized in that: The updating of the first capacitance mean value to obtain a new first capacitance mean value includes: Obtaining a preset adjustment value, and determining a new first capacitance average value based on the adjustment value and the first capacitance average value; or, A preset number of first target capacitors is obtained from the plurality of first capacitors, and a new first capacitance average is determined based on second actual capacitances of the preset number of first target capacitors.

6. The method according to claim 1, characterized in that The determining of the first capacitance theoretical value, the second capacitance theoretical value and the capacitance reference value based on the first actual capacitance of each first capacitance of the at least two first capacitance groups comprises: Determine a first maximum capacitance and a first minimum capacitance based on first actual capacitances of each first capacitor of the first first capacitor group; Determine a second maximum capacitance and a second minimum capacitance based on the first actual capacitance of each first capacitor in the second first capacitor group; Determine a second series capacitance based on the first maximum capacitance and the second maximum capacitance, and determine a third series capacitance based on the first minimum capacitance and the second minimum capacitance; Determine a first capacitance theoretical value based on the second series capacitance and a preset third coefficient, and determine a second capacitance theoretical value based on the third series capacitance and the third coefficient; A second capacitance mean value is determined based on the first capacitance theoretical value and the second capacitance theoretical value, and a capacitance reference value is determined based on the second capacitance mean value and a preset fourth coefficient.

7. The method according to any one of claims 1 to 6, characterized in that: The dividing the plurality of second capacitors into at least two second capacitor groups based on the first capacitance theoretical value and the second capacitance theoretical value comprises: Determining a plurality of second capacitance ranges based on the first capacitance theoretical value, the second capacitance theoretical value, a preset fifth coefficient, and a preset sixth coefficient; Based on the second capacitance ranges, the plurality of second capacitors are grouped to obtain at least two second capacitor groups.

8. The method according to any one of claims 1 to 6, characterized in that: The determining a first series capacitance after the third capacitor and the fourth capacitor are connected in series, and determining a capacitance to be assembled based on the first series capacitance, comprises: Acquire a third actual capacitance of the third capacitor and a fourth actual capacitance of the fourth capacitor under a current test environment; Determine a first series capacitance based on the third actual capacitance and the fourth actual capacitance; Obtain standard comparison values ​​and combination coefficients; The product of the first series capacitance, the standard comparison value and the combination coefficient is determined as the capacitance to be combined.

9. The method according to claim 8, characterized in that The method further comprises: Obtaining a fifth capacitor from the jth first capacitor group, and obtaining a sixth capacitor from the j+1th first capacitor group, where j is an odd number greater than 0 and less than K, K is the total number of first capacitor groups, and K is an even number; Acquire a fifth actual capacitance of the fifth capacitor and a sixth actual capacitance of the sixth capacitor under a current test environment; Acquire a first historical capacitance value of the fifth capacitor and a second historical capacitance value of the sixth capacitor under a historical test environment; Determine a first ratio of the fifth actual capacitance to the first historical capacitance, and determine a second ratio of the sixth actual capacitance to the second historical capacitance; Based on the first ratio and the second ratio, a standard comparison value is determined.

10. A capacitor assembly device, characterized in that: The device comprises: A first capacitor grouping module, configured to obtain first actual capacitances of a plurality of first capacitors, and group the plurality of first capacitors based on the plurality of first actual capacitances to obtain at least two first capacitor groups; A capacitance reference value determination module, configured to determine a first capacitance theoretical value, a second capacitance theoretical value, and a capacitance reference value based on a first actual capacitance of each first capacitor of the at least two first capacitance groups, wherein the capacitance reference value is used to produce a second capacitor; a second capacitor grouping module, configured to obtain second actual capacitances of the plurality of second capacitors after producing the plurality of second capacitors based on the capacitance reference value, and to divide the plurality of second capacitors into at least two second capacitor groups based on the first capacitance theoretical value and the second capacitance theoretical value; a module for determining a capacitance value to be grouped, configured to obtain a third capacitor and a fourth capacitor from two adjacent first capacitor groups, respectively, determine a first series capacitance after the third capacitor and the fourth capacitor are connected in series, and determine a capacitance value to be grouped based on the first series capacitance; The capacitor grouping module is used to determine a target capacitor group from the at least two second capacitor groups based on the capacitance to be grouped, and to group any second capacitor, the third capacitor, and the fourth capacitor in the target capacitor group.

11. An electronic device, characterized in that: The electronic device comprises: A memory for storing computer executable instructions; A processor, configured to implement the method according to any one of claims 1 to 9 when executing the computer executable instructions stored in the memory.

12. A computer-readable storage medium storing computer-executable instructions, characterized in that: When the computer executable instructions are executed by a processor, the method according to any one of claims 1 to 9 is implemented.

13. A computer program product comprising computer executable instructions or a computer program, characterized in that: When the computer executable instructions or computer programs are executed by a processor, the method according to any one of claims 1 to 9 is implemented.

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