Metal spraying control method and system for thin film capacitor

Abstract

The invention relates to the technical field of capacitor processing, discloses a metal spraying control method and system for a thin film capacitor, and aims to realize effective control on the diameter of metal spraying particles during metal spraying operation by accurately detecting the diameter of the metal spraying particles outside a spray gun in the metal spraying process. And the diameter of the metal spraying particles is accurately controlled within a specific proportion interval of the thickness of the film, so that the metal spraying particles can smoothly enter a gap between the two layers of films. In the process, the metal spraying particles are attached to the plating layer of the metallized film through the side faces, and the contact area can be effectively increased through the attaching mode. Along with the increase of the contact area, the adhesive force of the metal spraying layer is enhanced, and the contact resistance is reduced. The enhancement of the adhesive force of the metal spraying layer and the reduction of the contact resistance are beneficial for improving the overcurrent capability and the current impact resistance of the capacitor, and finally the improvement of the metal spraying performance of the metallized film capacitor is realized, so that the overall quality of the capacitor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitor processing, and in particular to a method and system for controlling gold spraying of a thin film capacitor. Background Art

[0002] As a key production process of metallized film capacitors, the gold spraying process is crucial to the quality of capacitors. The industry usually uses wave cutting to improve the performance of gold spraying, and the purpose is also to increase the contact area. Wave cutting on the side with the coating can directly increase the contact area more effectively, but the production process control is more difficult, and it is easy to cause damage to the end face of the metallized film, which affects the quality of the gold spraying contact. Wave cutting on the edge is expected to ensure the gap between the film layers through the support of the film wave peak, so that the gold spraying particles can smoothly enter the gap between the film layers. However, to achieve this goal, a key condition must be met, that is, the diameter of the gold spraying particles must be smaller than the gap between the film layers. However, in the actual production process, there is currently a lack of effective means to detect the diameter of the gold spraying particles. This situation makes it difficult to accurately control the diameter of the gold spraying particles during the production process, and it is impossible to ensure that it meets the requirements for entering the gap of the film layer, which in turn affects the effect of wave cutting on improving the performance of gold spraying during the edge operation, and also restricts the role of the entire gold spraying process in improving the quality of metallized film capacitors. Summary of the invention

[0003] The present invention provides a method and system for controlling the gold spraying of a film capacitor, which solves the technical problem of how to improve the gold spraying performance of a metallized film capacitor, thereby improving the overall quality of the capacitor.

[0004] A first aspect of the present invention provides a method for controlling the gold spraying of a thin film capacitor, comprising:

[0005] In response to a request for controlling the spraying of gold on a target capacitor, obtaining film thickness data of the target capacitor;

[0006] Determining a particle size wide distribution range based on the film thickness data and a preset particle size coefficient table;

[0007] Detecting the diameter of the gold-spraying particles within a preset radius area when the target capacitor is subjected to a gold-spraying operation;

[0008] Determining whether the diameter of the gold-sprayed particles is within the wide particle size distribution range;

[0009] When the diameter of the gold-sprayed particles is not within the wide particle size distribution range, the operating parameters of the spray gun are adjusted according to a preset step value until the diameter of the gold-sprayed particles is within the wide particle size distribution range.

[0010] Optionally, determining the particle size wide distribution interval based on the film thickness data and a preset particle size coefficient table includes:

[0011] Using the film thickness data to retrieve a preset particle size coefficient table to determine the particle size coefficient;

[0012] Wherein, the particle size coefficient includes an upper particle size limit coefficient and a lower particle size limit coefficient;

[0013] The film thickness data is multiplied by the particle size upper limit coefficient to obtain the upper limit value of the particle size wide distribution range;

[0014] The film thickness data is multiplied by the particle size lower limit coefficient to obtain the lower limit value of the particle size wide distribution range.

[0015] Optionally, the detecting the diameter of the gold-spraying particles within a preset radius area when the target capacitor is subjected to the gold-spraying operation includes:

[0016] Performing Fraunhofer diffraction detection on the gold-spraying particle mist within a preset radius area sprayed by the spray gun during the gold-spraying operation on the target capacitor, and acquiring optical detection data and the diffraction measurement data associated with the plurality of gold-spraying particles within the gold-spraying particle mist;

[0017] Determining particle diameter data and light energy data of the gold-sprayed particles associated with each of the gold-sprayed particles based on the optical detection data and the diffraction measurement data;

[0018] The diameter of the gold-sprayed particles is determined according to the particle diameter data associated with each of the gold-sprayed particles and the light energy data of the gold-sprayed particles.

[0019] Optionally, the optical detection data includes the incident light wave length and the lens focal length, the diffraction measurement data includes the diffraction angle and the diffraction light intensity, and the particle diameter data and the light energy data of the gold-sprayed particles associated with each of the gold-sprayed particles are determined based on the optical detection data and the diffraction measurement data, including:

[0020] Based on the incident light wavelength and the lens focal length, the diffraction angles and diffraction light intensities associated with a plurality of the gold-sprayed particles are respectively used to input a preset diffraction light intensity distribution function for numerical solution to determine the particle diameter data associated with each of the gold-sprayed particles;

[0021] Based on the preset constants, the incident light wavelength and the incident light intensity, the diffraction angles and the particle diameter data associated with the multiple gold-sprayed particles are respectively input into the preset gold-sprayed particle light energy function for numerical solution to determine the gold-sprayed particle light energy data associated with each of the gold-sprayed particles.

[0022] Optionally, the operating parameters include gun distance parameters, compressed air pressure parameters and fuse current parameters.

[0023] Optionally, it also includes:

[0024] When the diameter of the gold-sprayed particles is within the particle size wide distribution range, the particle size distribution upper limit value and the particle size distribution lower limit value are used to perform mean calculation to obtain the optimal center particle size value;

[0025] Based on the wide particle size distribution range, a preset narrow range upper limit coefficient and a preset narrow range lower limit coefficient are used to perform calculations to obtain an upper limit value and a lower limit value of the narrow particle size distribution range;

[0026] Determine whether the diameter of the gold-sprayed particles at the current moment is within the narrow particle size distribution range;

[0027] When the diameter of the gold-sprayed particles at the current moment is in the narrow range of the particle size distribution, the preset step value is reduced until the diameter of the gold-sprayed particles at the current moment is equal to the optimal central particle size value.

[0028] A second aspect of the present invention provides a film capacitor gold spraying control system, comprising:

[0029] A response module, used for responding to a spraying control request for a target capacitor and acquiring film thickness data of the target capacitor;

[0030] An interval determination module, for determining a particle size wide distribution interval based on the film thickness data and a preset particle size coefficient table;

[0031] A particle size detection module, used to detect the diameter of the gold-sprayed particles when the target capacitor is subjected to a gold-spraying operation;

[0032] A wide interval judgment module, used to judge whether the diameter of the gold-sprayed particles is within the wide particle size distribution interval;

[0033] The control module is used to adjust the operating parameters of the spray gun according to a preset step value when the diameter of the gold-sprayed particles is not within the wide particle size distribution range, until the diameter of the gold-sprayed particles is within the wide particle size distribution range.

[0034] A third aspect of the present invention provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the gold spraying control method for a thin film capacitor as described in any one of the above items.

[0035] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed, implements the method for controlling the gold spraying of a thin film capacitor as described in any one of the above items.

[0036] A fifth aspect of the present invention provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer executes the gold spraying control method for a thin film capacitor as described in any one of the above items.

[0037] It can be seen from the above technical solutions that the present invention has the following advantages:

[0038] The present invention can effectively control the diameter of the gold-sprayed particles during the gold-spraying operation by accurately detecting the diameter of the gold-sprayed particles outside the spray gun during the gold-spraying process. The diameter of the gold-sprayed particles is accurately controlled within a specific proportional interval of the film thickness, thereby ensuring that the gold-sprayed particles can smoothly enter the gap between the two layers of film. In this process, the gold-sprayed particles are attached to the coating of the metallized film with the help of the side, and this attachment method can effectively increase the contact area. As the contact area increases, the adhesion of the gold-sprayed layer is enhanced, and the contact resistance is reduced. The enhancement of the adhesion of the gold-sprayed layer and the reduction of the contact resistance help to improve the overcurrent capacity and current impact resistance of the capacitor, and finally achieve the improvement of the gold-spraying performance of the metallized film capacitor, thereby improving the overall quality of the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0040] Figure 1 A flowchart of a method for controlling gold spraying of a thin film capacitor provided in the first embodiment of the present invention;

[0041] Figure 2 A flowchart of a method for controlling gold spraying of a thin film capacitor provided in the second embodiment of the present invention;

[0042] Figure 3 This is a cross-sectional view of the gold-sprayed end face of the film capacitor core;

[0043] Figure 4 Schematic diagram of Fraunhofer diffraction detection of gold-sprayed particle mist;

[0044] Figure 5 A structural block diagram of a gold spraying control system for a thin film capacitor provided in the third embodiment of the present invention;

[0045] Figure 6This is a structural block diagram of a computer device provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0046] The embodiments of the present invention provide a method and system for controlling the gold spraying of a thin film capacitor, which are used to solve the technical problem of how to improve the gold spraying performance of a metallized thin film capacitor, thereby improving the overall quality of the capacitor.

[0047] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] See also Figure 1 , Figure 1 A flowchart of the steps of a method for controlling gold spraying of a thin film capacitor provided in the first embodiment of the present invention.

[0049] The present invention provides a method for controlling the gold spraying of a film capacitor, comprising:

[0050] Step 101 : Responding to a request for controlling the spraying of gold on a target capacitor, obtaining film thickness data of the target capacitor.

[0051] The gold spraying control request refers to the request information for controlling the spray gun for gold spraying operation when gold spraying operation is performed on the target film capacitor so that the diameter of the gold spraying particles is accurately controlled within a specific proportional range of the film thickness.

[0052] The film thickness data refers to the film thickness of the target capacitor.

[0053] In an embodiment of the present invention, in response to receiving a request information for performing a gold spraying operation on a target thin film capacitor, the spray gun performing the gold spraying operation is controlled so that the diameter of the gold spraying particles is accurately controlled within a specific proportional range of the film thickness, the request information is read, and the film thickness data of the target capacitor is obtained.

[0054] Step 102: Determine the particle size wide distribution range based on the film thickness data and a preset particle size coefficient table.

[0055] In the embodiment of the present invention, the preset particle size coefficient table is retrieved using the film thickness data, and the particle size wide distribution range is determined using the retrieval result and the film thickness data.

[0056] Step 103: Detect the diameter of the gold-spraying particles within a preset radius area when performing the gold-spraying operation on the target capacitor.

[0057] In an embodiment of the present invention, the diameter of the gold-spraying particles within a preset radius area is detected when the target capacitor is subjected to the gold-spraying operation.

[0058] Step 104 , determining whether the diameter of the gold-sprayed particles is within a wide particle size distribution range.

[0059] In the embodiment of the present invention, it is determined whether the diameter of the gold-sprayed particles is in a wide particle diameter distribution range.

[0060] Step 105 , when the diameter of the gold-sprayed particles is not within the wide distribution range of particle sizes, adjusting the operating parameters of the spray gun according to a preset step value until the diameter of the gold-sprayed particles is within the wide distribution range of particle sizes.

[0061] In an embodiment of the present invention, when the diameter of the gold-sprayed particles is not within the wide distribution range of particle sizes, the operating parameters of the spray gun are adjusted according to a preset step value until the diameter of the gold-sprayed particles is within the wide distribution range of particle sizes.

[0062] In the implementation of the present invention, in response to the gold spraying control request for the target capacitor, the film thickness data of the target capacitor is obtained; based on the film thickness data and the preset particle size coefficient table, the particle size wide distribution range is determined; the diameter of the gold spraying particles in the preset radius area when the target capacitor is subjected to the gold spraying operation is detected to determine whether the diameter of the gold spraying particles is in the particle size wide distribution range; when the diameter of the gold spraying particles is not in the particle size wide distribution range, the operating parameters of the spray gun are adjusted according to the preset step value until the diameter of the gold spraying particles is in the particle size wide distribution range. The present invention achieves effective control of the diameter of the gold spraying particles during the gold spraying operation by accurately detecting the diameter of the gold spraying particles outside the spray gun during the gold spraying process. The diameter of the gold spraying particles is accurately controlled within a specific proportional range of the film thickness, thereby ensuring that the gold spraying particles can smoothly enter the gap between the two layers of film. In this process, the gold spraying particles are attached to the coating of the metallized film by means of the side, and this attachment method can effectively increase the contact area. As the contact area increases, the adhesion of the gold spraying layer is enhanced, and the contact resistance is reduced. The enhancement of the adhesion of the gold spraying layer and the reduction of the contact resistance help to improve the overcurrent capacity and current impact resistance of the capacitor, and ultimately improve the gold spraying performance of the metallized film capacitor, thereby improving the overall quality of the capacitor. The technical problem of how to improve the gold spraying performance of the metallized film capacitor and thus improve the overall quality of the capacitor has been solved.

[0063] See also Figure 2 , Figure 2 A flow chart of the steps of a method for controlling gold spraying of a thin film capacitor provided in the second embodiment of the present invention.

[0064] Metallized film capacitors are wound with two layers of metallized film. The gold spraying process uses heat sources such as electric arc or flame to melt the various solders to be sprayed and atomize them under the action of compressed air. The crushed metal particles are sprayed at high speed on the end face of the capacitor core, so that the turns of the core end face are connected together to form an equipotential metal electrode surface, which is convenient for welding wires to lead out electrodes in the subsequent process. The quality of gold spraying mainly depends on the contact area and adhesion of gold spraying. The contact area of ​​gold spraying can be affected by controlling the size of gold spraying particles. Because there is a certain gap between the films of different poles, the size of the gap is approximately equal to the thickness of the film. The DC support capacitor for the flexible DC transmission converter valve is The film thickness generally used is about 6μm. In this way, the gold spraying process controls the particle diameter to be between 0.3 and 0.7 times the film thickness, so that the gold spraying particles can enter the gap between the two layers of film, thereby contacting the metal plating on the film with a larger area, making the contact area larger and the adhesion better, thereby improving the overcurrent capacity and current impact resistance. A device including lighting, photography, etc. is used to monitor the transmittance of metal particles close to the gold spraying surface, and the size of the gold spraying particles is converted by the transmittance to control the diameter of the gold spraying particles to ensure that it is between 0.3 and 0.7 times the film thickness. Gold spraying is one of the key processes in the production of metallized capacitors. Its basic structure is as follows Figure 3 As shown, Figure 3 This is a cross-sectional view of the gold-sprayed end surface of the film capacitor core.

[0065] The present invention provides a method for controlling the gold spraying of a thin film capacitor, which is applied to a gold spraying device for a thin film capacitor, comprising:

[0066] The film capacitor gold spraying device includes a gold spraying platform and a controller;

[0067] The gold-spraying platform is provided with positioning pins, and the film capacitor is provided with mounting holes. The mounting holes of the film capacitor are aligned with the positioning pins and inserted to realize the positioning and fixing of the capacitor on the platform.

[0068] A fixed bracket is provided on the gold spraying platform, an electric push rod is provided on the fixed bracket, and the spray gun is vertically installed on the fixed bracket above the gold spraying platform through the electric push rod;

[0069] The electric push rod is connected to the controller for communication. The electric push rod is used to raise or lower the vertical height of the spray gun, thereby adjusting the distance between the spray gun and the film capacitor, that is, the gun distance;

[0070] The pressure regulating valve in the spray gun is connected to the controller through communication. The flow of compressed air is controlled by adjusting the opening of the valve, thereby indirectly controlling the air pressure. When the valve opening increases, more compressed air can pass through and the air pressure will increase; conversely, when the valve opening decreases, the air pressure decreases.

[0071] The control circuit in the spray gun is connected to the controller for communication. The control loop is connected to a linear regulator, which is used to adjust the output voltage by adjusting the conduction degree of the transistor inside itself. The output voltage of the linear regulator is connected to the power input terminal of the spray gun. Since the fuse current = output voltage / fuse resistance, the fuse current can be controlled by changing the output voltage.

[0072] It is worth mentioning that since the size of the fuse current directly affects the melting and atomization state of the gold material, the control circuit is connected with a current sensor, such as a Hall effect current sensor, for real-time monitoring of the fuse current.

[0073] A light source component and a Fourier lens are arranged on the gold-spraying platform, and the light source component is, for example, a laser;

[0074] A gold spraying path is formed between the spray gun and the film capacitor, a light source assembly is arranged on one side of the gold spraying path, and a Fourier lens is arranged on the other side of the gold spraying path, and the light source assembly and the Fourier lens are on the same horizontal line;

[0075] The light source assembly is used to provide an incident light source, and the Fraunhofer lens is used to focus the diffracted light. The light source assembly and the Fraunhofer lens are used together to perform Fraunhofer diffraction detection on the gold-spraying particle mist within a preset radius area sprayed by the spray gun when the target capacitor is subjected to gold-spraying operation.

[0076] It is worth mentioning that Figure 4 As shown, the nozzle sprays out a metal particle mist cone, which is a phenomenon that occurs during the metal particle spraying process in the gold spraying process. When the metal particles are sprayed out by the spraying device, due to the influence of the spraying pressure, the shape of the nozzle and the surrounding environment, the metal particles will not be evenly dispersed in a straight line, but will form a spatial distribution form similar to a cone, forming a metal particle mist cone.

[0077] Step 201 : responding to a request for controlling the gold spraying of a target capacitor, and acquiring film thickness data of the target capacitor.

[0078] In the embodiment of the present invention, the specific implementation process of step 201 is similar to step 101 and will not be repeated here.

[0079] Step 202: Determine the particle size wide distribution range based on the film thickness data and a preset particle size coefficient table.

[0080] Further, step 202 may include the following sub-steps:

[0081] S11, using the film thickness data to retrieve a preset particle size coefficient table to determine the particle size coefficient;

[0082] The particle size coefficient includes the particle size upper limit coefficient and the particle size lower limit coefficient.

[0083] The preset particle size coefficient table refers to a key-value pair table established according to the association between the film thickness data and the particle size coefficient, wherein the film thickness data is used as the key and the particle size coefficient is used as the value.

[0084] The preset particle size coefficient table is shown in Table 1:

[0085]

[0086] It should be noted that the construction process of the preset particle size coefficient table is as follows:

[0087] Using a plurality of film thickness data to input a preset particle size coefficient function respectively, and determining the particle size coefficient corresponding to each film thickness data;

[0088] The preset particle size coefficient function is specifically:

[0089]

[0090]

[0091] In the formula, represents the particle size lower limit coefficient, represents the particle size upper limit coefficient, Indicates film thickness data;

[0092] Use spreadsheet software to construct a key-value pair data table, where the key of the data table is the film thickness, and the value is the corresponding particle size upper limit coefficient and particle size lower limit coefficient;

[0093] The thickness data of each film and the corresponding upper and lower limit coefficients of particle size are used to fill in the key-value pair data table to generate a particle size coefficient table.

[0094] In the embodiment of the present invention, the preset particle size coefficient table is retrieved using the film thickness data to retrieve the particle size upper limit coefficient and the particle size lower limit coefficient associated with the film thickness data.

[0095] S12, multiplying the film thickness data by the particle size upper limit coefficient to obtain the upper limit value of the particle size wide distribution range.

[0096] In a specific implementation, in order to facilitate the implementation of the method, the above process can be converted into a formula encapsulation form, wherein the upper limit value of the wide particle size distribution range can be calculated as follows:

[0097]

[0098] In the formula, Indicates the upper limit of the wide particle size distribution range.

[0099] S13, multiplying the film thickness data by the particle size lower limit coefficient to obtain the lower limit value of the particle size wide distribution range.

[0100] In a specific implementation, in order to facilitate the implementation of the method, the above process can be converted into a formula encapsulation form, wherein the lower limit value of the particle size wide distribution range can be calculated as follows:

[0101]

[0102] In the formula, Indicates the lower limit of the wide particle size distribution range.

[0103] Step 203: Detect the diameter of the gold-spraying particles within a preset radius area during the gold-spraying operation on the target capacitor.

[0104] Further, step 203 may include the following sub-steps:

[0105] S21, performing Fraunhofer diffraction detection on the gold-spraying particle mist within a preset radius area sprayed by the spray gun during the gold-spraying operation on the target capacitor, and obtaining optical detection data and diffraction measurement data associated with multiple gold-spraying particles in the gold-spraying particle mist.

[0106] In the embodiment of the present invention, please refer to Figure 4 , Figure 4 Schematic diagram of Fraunhofer diffraction detection of gold-sprayed particle mist.

[0107] S22. Based on the optical detection data and the diffraction measurement data, determine the particle diameter data and the light energy data of the gold-sprayed particles associated with each gold-sprayed particle.

[0108] Furthermore, the optical detection data includes the incident light wave length and the lens focal length, and the diffraction measurement data includes the diffraction angle and the diffraction light intensity. S22 may include the following sub-steps:

[0109] S221. Based on the incident light wavelength and the focal length of the lens, the diffraction angles and diffraction light intensities associated with a plurality of gold-sprayed particles are respectively used to input a preset diffraction light intensity distribution function for numerical solution to determine the particle diameter data associated with each gold-sprayed particle.

[0110] When parallel light is irradiated to an area rich in gold-sprayed particles, diffraction occurs. The spatial frequency of the particle diffraction light is inversely proportional to the radius of the gold-sprayed particle, that is, the diffraction light of large gold-sprayed particles is mainly low spatial frequency and concentrated near the center of the diffraction pattern, while the diffraction light of small gold-sprayed particles has a higher spatial frequency and is mostly distributed outside the diffraction pattern. If a Fourier transform Fourier lens is placed on the optical path, the non-diffracted light is focused to the focus of the Fourier lens, while the diffracted light is focused to the periphery of the center point. The diffraction pattern is expressed as a two-dimensional Fourier transform with axisymmetry. According to circular aperture diffraction and Babinet's complementarity law, the diffraction light intensity distribution function of a single gold-sprayed particle is:

[0111]

[0112]

[0113] In the formula, Indicates particle diameter data, represents the diffracted light intensity, represents the incident light intensity, represents the particle size parameter, represents the focal length of the lens, is the incident light wave length, represents the diffraction angle, where , Indicates the distance from this point to the center of the optical path, represents a first-order Bessel function.

[0114] It is worth mentioning that the diffraction angle and diffraction light intensity are both measured data and directly obtained. The gold-spraying platform is equipped with a diffractometer and a photoelectric conversion device, specifically a single-photon avalanche diode (SSPD). The diffractometer is used to measure the diffraction angle, and the photoelectric conversion device is used to measure the diffraction light intensity. When the diffracted light is irradiated on the photodiode, the photodiode generates a corresponding photocurrent according to the light intensity. By measuring the size of the photocurrent and combining the photoelectric conversion characteristics of the diode (for example, knowing its sensitivity coefficient), the diffraction light intensity can be obtained.

[0115] In an embodiment of the present invention, the incident light wavelength and the lens focal length are substituted into a preset diffraction light intensity distribution function. It can be understood that when calculating the particle size diameter data associated with each gold-sprayed particle, the incident light wavelength and the lens focal length associated with each gold-sprayed particle are the same, but the difference is the diffraction angle and diffraction light intensity associated with each gold-sprayed particle. Therefore, based on the incident light wavelength and the lens focal length, the diffraction angles and diffraction light intensities associated with multiple gold-sprayed particles are respectively used to input the preset diffraction light intensity distribution function for numerical solution to determine the particle size diameter data associated with each gold-sprayed particle.

[0116] It should be noted that the first-order Bessel function is obtained using mathematical software such as Matlab.

[0117] S222, based on preset constants, incident light wavelength and incident light intensity, respectively use the diffraction angle and particle diameter data associated with multiple gold-sprayed particles to input the preset gold-sprayed particle light energy function for numerical solution to determine the gold-sprayed particle light energy data associated with each gold-sprayed particle.

[0118] When a photoelectric conversion device is placed on the Fourier lens spectrum surface, the light energy received by each gold-sprayed particle within the preset radius area, which can be defined as a circle with a radius of r, is represented by the gold-sprayed particle light energy function:

[0119]

[0120]

[0121]

[0122]

[0123] In the formula, Indicates the first The light energy data of the gold-spraying particles is specifically the light energy received by the gold-spraying particles. Represents a preset constant, specifically a preset proportional constant, Indicates The particle diameter data of the gold-sprayed particles, represents the zero-order Bessel function.

[0124] In an embodiment of the present invention, the preset constants, incident light wavelength and incident light intensity are substituted into the preset gold-sprayed particle light energy function. It can be understood that when calculating the gold-sprayed particle light energy data associated with each gold-sprayed particle, the preset constants, incident light wavelength and incident light intensity associated with each gold-sprayed particle are the same, and the difference is the diffraction angle and particle size diameter data associated with each gold-sprayed particle. Therefore, based on the preset constants, incident light wavelength and incident light intensity, the diffraction angle and particle size diameter data associated with multiple gold-sprayed particles are respectively input into the preset gold-sprayed particle light energy function for numerical solution to determine the gold-sprayed particle light energy data associated with each gold-sprayed particle.

[0125] It is worth mentioning that the distribution of the gold-sprayed particle group under test is continuous and satisfies:

[0126]

[0127] in, Represents the normalized frequency distribution of the gold-sprayed particle group.

[0128] Without considering complex scattering, The light energy received in a preset radius area (circle) for:

[0129]

[0130] In the formula, Indicates The inner radius of a preset radius area, Indicates The outer radius of a preset radius area, represents a constant related to the measurement, It indicates the percentage of gold-sprayed particles with sizes between D and D+dD in the total number of gold-sprayed particles.

[0131] S23, determining the diameter of the gold-sprayed particles according to the particle diameter data associated with each gold-sprayed particle and the light energy data of the gold-sprayed particles.

[0132] In the embodiment of the present invention, the diameter of the gold-sprayed particles is determined according to the particle diameter data associated with each gold-sprayed particle and the light energy data of the gold-sprayed particles.

[0133] For ease of understanding, a specific application example is provided below:

[0134] Assume that there are 5 particles in a region, and the known parameters are as follows:

[0135] Lens focal length =10mm

[0136] Incident light intensity =1W / m 2

[0137] Incident light wave length =500nm

[0138] At different diffraction angles, the diffraction intensity of each gold-sprayed particle is measured and shown in Table 2 below:

[0139]

[0140] Calculate the particle diameter data of a single gold-spraying particle :

[0141] Gold-spraying particles 1: The above known parameters, , Substituting into the above equation, and performing numerical calculations using computer software (e.g., using computer software for iterative solution), we get

[0142]

[0143]

[0144] Get the particle diameter data of gold-sprayed particles 1 .

[0145] Gold-spraying particles 2: The above known parameters, , Substituting into the above equation, and performing numerical calculations using computer software (e.g., using computer software for iterative solution), we get

[0146]

[0147]

[0148] Get the particle diameter data of gold-sprayed particles 2 .

[0149] Gold-spraying particles 3: The above known parameters, , Substituting into the above equation, and performing numerical calculations using computer software (e.g., using computer software for iterative solution), we get

[0150]

[0151]

[0152] Get the particle diameter data of the gold-sprayed particles 3 .

[0153] Gold-spraying particles 4: The above known parameters, , Substituting into the above equation, and performing numerical calculations using computer software (e.g., using computer software for iterative solution), we get

[0154]

[0155]

[0156] Get the particle diameter data of the gold-sprayed particles 4 .

[0157] Gold-spraying particles 5: The above known parameters, , Substituting into the above equation, and performing numerical calculations using computer software (e.g., using computer software for iterative solution), we get

[0158]

[0159]

[0160] Get the particle diameter data of the gold-sprayed particles 5 .

[0161] Calculate the light energy data of a single gold-spraying particle :

[0162] Gold spray particles 1:

[0163] Gold Spray Particles 2:

[0164] Gold Spray Particles 3:

[0165] Gold Spray Particles 4:

[0166] Gold Spray Particles 5:

[0167] According to the above, the light energy data of the gold-sprayed particle 5 is the largest. Therefore, the particle diameter data of the gold-sprayed particle 5 corresponding to the maximum probability distribution is is the diameter of the gold-sprayed particles.

[0168] In the embodiment of the present invention, the actual diameter distribution of the gold-sprayed particles is calculated according to the diffraction angle and the diffraction light intensity, and the particle diameter data corresponding to the maximum probability distribution is the diameter of the gold-sprayed particles.

[0169] Step 204 , determining whether the diameter of the gold-sprayed particles is within a wide particle size distribution range.

[0170] In the embodiment of the present invention, it is determined whether the diameter of the gold-sprayed particles is in the wide particle size distribution range. .

[0171] Step 205 , when the diameter of the gold-sprayed particles is not within the wide distribution range of particle sizes, adjusting the operating parameters of the spray gun according to a preset step value until the diameter of the gold-sprayed particles is within the wide distribution range of particle sizes.

[0172] Furthermore, the operating parameters include a gun distance parameter, a compressed air pressure parameter, and a fuse current parameter.

[0173] In an embodiment of the present invention, when the diameter of the gold-spraying particles is not in the wide particle size distribution range, the controller adjusts the operating parameters of the spray gun according to the preset step value, that is, adjusts the gun distance parameter, the compressed air pressure parameter and the fuse current parameter. The larger the gun distance parameter, the smaller the gold-spraying particles, the larger the compressed air pressure parameter, the smaller the gold-spraying particles, and the smaller the fuse current parameter, the smaller the gold-spraying particles. The three parameters are adjusted at the same time, the gun distance parameter is adjusted in steps of 1 mm, the compressed air pressure parameter is adjusted in steps of 0.01 MPa, and the fuse current parameter is adjusted in steps of 1 A, until the diameter of the gold-spraying particles is in the wide particle size distribution range.

[0174] Furthermore, it also includes:

[0175] Step 206: When the diameter of the gold-sprayed particles is in a wide particle size distribution range, the particle size distribution upper limit value and the particle size distribution lower limit value are used to perform mean calculation to obtain the optimal center particle size value.

[0176] In the embodiment of the present invention, when the diameter of the gold-sprayed particles is in the wide distribution range of particle diameters, it is assumed that the wide distribution range of particle diameters is At this time, the diameter of the gold-sprayed particles is 0.8, which has entered the wide distribution range of particle size, but further adjustment is still needed. Therefore, the average calculation is performed based on the upper limit value and the lower limit value of the particle size distribution, that is, (0.7+1.2) / 2=0.95, and the optimal central particle size value is 0.95.

[0177] Step 207 : Based on the particle size wide distribution range, a preset narrow range upper limit coefficient and a preset narrow range lower limit coefficient are used to perform calculations to obtain an upper limit value and a lower limit value of the particle size distribution narrow range.

[0178] In the embodiment of the present invention, the upper limit value of the wide particle size distribution interval and the preset narrow interval upper limit coefficient are used for difference calculation; the lower limit value of the wide particle size distribution interval and the preset narrow interval lower limit coefficient are used for sum calculation. Assuming that the preset narrow interval upper limit coefficient and the preset narrow interval lower limit coefficient are both 0.1, then +0.1=0.8, 1.2-0.1=1.1, the final particle size distribution is in a narrow range of

[0179] Step 208: determine whether the diameter of the gold-sprayed particles at the current moment is in a narrow range of particle size distribution.

[0180] In the embodiment of the present invention, it is determined whether the diameter of the gold-sprayed particles at the current moment is in a narrow range of particle size distribution.

[0181] Step 209 : when the diameter of the gold-sprayed particles at the current moment is in a narrow range of particle size distribution, the preset step value is reduced until the diameter of the gold-sprayed particles at the current moment is equal to the optimal central particle size value.

[0182] In the embodiment of the present invention, assuming that the diameter of the gold-sprayed particles at the current moment is 0.9, when it is in a narrow range of particle size distribution, it is necessary to reduce the preset step value and adjust it until the diameter of the gold-sprayed particles at the current moment is equal to the optimal central particle size value of 0.95.

[0183] Step 2010: When the diameter of the gold-sprayed particles at the current moment is not in the narrow range of particle size distribution, the operating parameters of the spray gun are adjusted by maintaining the current preset step value until the diameter of the gold-sprayed particles at the current moment is in the narrow range of particle size distribution.

[0184] In an embodiment of the present invention, when the diameter of the gold-sprayed particles at the current moment is not in the narrow range of particle size distribution, the operating parameters of the spray gun are adjusted by maintaining the current preset step value until the diameter of the gold-sprayed particles at the current moment is in the narrow range of particle size distribution.

[0185] It is worth mentioning that the present invention sets a wide range and a narrow range of particle size distribution, dynamically adjusts the step value at different stages, gradually improves the adjustment accuracy, makes the adjustment process more efficient and accurate, ensures that the particle size of the gold-sprayed particles accurately reaches the target range, further improves the gold-spraying performance of the metallized film capacitor, and improves the overall quality of the capacitor.

[0186] In the application of the present invention, during the process of spraying the capacitor core with the spray gun, the light source irradiates the gold-sprayed particles sprayed by the spray gun, detects the particle diameter data and the light energy data of the gold-sprayed particles, and sends the particle diameter data and the light energy data of the gold-sprayed particles to the controller, the controller calculates the diameter of the gold-sprayed particles through the particle diameter data and the light energy data of the gold-sprayed particles in the gold-spraying process, and obtains the thickness of the single-layer capacitor film in the capacitor core, the controller outputs the adjustment signal of the spray gun, and the spray gun adjusts the height of the gun distance, the compressed air pressure and the fuse current based on the adjustment signal to control the size of the gold-sprayed particles, for example, the thickness of the film is 6 μm, and the diameter of the gold-sprayed particles is ensured to be between 0.3 and 0.7 times the thickness of the film. The reason for selecting this diameter range is that if the particles are too small, they are easily oxidized, resulting in poor adhesion, and if the particles are too large, they cannot enter the gap between the film layers. When the film thickness is 4 to 10 microns, it is adjusted according to different products.

[0187] The invention has the advantages that:

[0188] 1. Through the conversion of particle size and transmittance, the gold spraying process is monitored in real time to ensure that the diameter of the gold spraying particles is between 0.3 and 0.7 times the film thickness;

[0189] 2. Through the effective control of the diameter of the gold-sprayed particles, the gold-sprayed particles can enter the gaps between the films;

[0190] 3. The gold particles sprayed into the gaps between the films can be attached to the coating of the metallized film through the side, thereby increasing the contact area;

[0191] 4. As the contact area increases, the adhesion and contact resistance of the gold-sprayed layer decrease, thereby improving the capacitor's overcurrent capacity and current shock resistance.

[0192] In the implementation of the present invention, in response to the gold spraying control request for the target capacitor, the film thickness data of the target capacitor is obtained; based on the film thickness data and the preset particle size coefficient table, the particle size wide distribution range is determined; the diameter of the gold spraying particles in the preset radius area when the target capacitor is subjected to the gold spraying operation is detected to determine whether the diameter of the gold spraying particles is in the particle size wide distribution range; when the diameter of the gold spraying particles is not in the particle size wide distribution range, the operating parameters of the spray gun are adjusted according to the preset step value until the diameter of the gold spraying particles is in the particle size wide distribution range. The present invention achieves effective control of the diameter of the gold spraying particles during the gold spraying operation by accurately detecting the diameter of the gold spraying particles outside the spray gun during the gold spraying process. The diameter of the gold spraying particles is accurately controlled within a specific proportional range of the film thickness, thereby ensuring that the gold spraying particles can smoothly enter the gap between the two layers of film. In this process, the gold spraying particles are attached to the coating of the metallized film by means of the side, and this attachment method can effectively increase the contact area. As the contact area increases, the adhesion of the gold spraying layer is enhanced, and the contact resistance is reduced. The enhancement of the adhesion of the gold spraying layer and the reduction of the contact resistance help to improve the overcurrent capacity and current impact resistance of the capacitor, and ultimately improve the gold spraying performance of the metallized film capacitor, thereby improving the overall quality of the capacitor. The technical problem of how to improve the gold spraying performance of the metallized film capacitor and thus improve the overall quality of the capacitor has been solved.

[0193] See also Figure 5 , Figure 5 This is a structural block diagram of a gold spraying control system for a thin film capacitor provided in the third embodiment of the present invention.

[0194] The present invention provides a film capacitor gold spraying control system, comprising:

[0195] A response module 301 is used to respond to a spraying control request for a target capacitor and obtain film thickness data of the target capacitor;

[0196] An interval determination module 302 is used to determine a particle size wide distribution interval based on film thickness data and a preset particle size coefficient table;

[0197] The particle size detection module 303 is used to detect the diameter of the gold-spraying particles when the target capacitor is subjected to the gold-spraying operation;

[0198] A wide interval determination module 304 is used to determine whether the diameter of the gold-sprayed particles is in a wide particle size distribution interval;

[0199] The control module 305 is used to adjust the operating parameters of the spray gun according to the preset step value when the diameter of the gold-sprayed particles is not in the wide distribution range of particle sizes, until the diameter of the gold-sprayed particles is in the wide distribution range of particle sizes.

[0200] Further, the interval determination module 302 includes:

[0201] A particle size coefficient submodule is used to retrieve a preset particle size coefficient table using film thickness data to determine the particle size coefficient;

[0202] Among them, the particle size coefficient includes the particle size upper limit coefficient and the particle size lower limit coefficient;

[0203] The wide distribution interval upper limit value submodule is used to perform multiplication operation by the film thickness data and the particle size upper limit coefficient to obtain the upper limit value of the particle size wide distribution interval;

[0204] The wide distribution interval lower limit value submodule is used to multiply the film thickness data with the particle size lower limit coefficient to obtain the lower limit value of the particle size wide distribution interval.

[0205] Further, the particle size detection module 303 includes:

[0206] A data acquisition submodule is used to perform Fraunhofer diffraction detection on the gold-spraying particle mist within a preset radius area sprayed by the spray gun during the gold-spraying operation on the target capacitor, and obtain optical detection data and diffraction measurement data associated with multiple gold-spraying particles in the gold-spraying particle mist;

[0207] A data processing submodule, for determining the particle diameter data and the light energy data of the gold-sprayed particles associated with each gold-sprayed particle based on the optical detection data and the diffraction measurement data;

[0208] The gold-spraying particle diameter submodule is used to determine the diameter of the gold-spraying particles according to the particle diameter data associated with each gold-spraying particle and the gold-spraying particle light energy data.

[0209] Furthermore, the optical detection data includes the incident light wave length and the lens focal length, the diffraction measurement data includes the diffraction angle and the diffraction light intensity, and the data processing submodule includes:

[0210] The particle diameter data unit is used to determine the particle diameter data associated with each gold-sprayed particle by respectively using the diffraction angle and diffraction light intensity associated with a plurality of gold-sprayed particles to input a preset diffraction light intensity distribution function for numerical solution based on the incident light wave length and the lens focal length;

[0211] The gold-sprayed particle light energy data unit is used to numerically solve the preset gold-sprayed particle light energy function based on preset constants, incident light wavelength and incident light intensity, using the diffraction angle and particle diameter data associated with multiple gold-sprayed particles to determine the gold-sprayed particle light energy data associated with each gold-sprayed particle.

[0212] Furthermore, the operating parameters include a gun distance parameter, a compressed air pressure parameter, and a fuse current parameter.

[0213] Furthermore, it also includes:

[0214] The optimal center particle size value module is used to calculate the mean value of the particle size distribution upper limit and the particle size distribution lower limit when the diameter of the gold-sprayed particles is in the wide particle size distribution range to obtain the optimal center particle size value;

[0215] The particle size distribution narrow interval module is used to calculate based on the particle size wide distribution interval using a preset narrow interval upper limit coefficient and a preset narrow interval lower limit coefficient to obtain an upper limit value and a lower limit value of the particle size distribution narrow interval;

[0216] The narrow interval judgment module is used to judge whether the diameter of the gold-sprayed particles at the current moment is in the narrow interval of particle size distribution;

[0217] The step value adjustment module is used to reduce the preset step value when the diameter of the gold-sprayed particles at the current moment is in a narrow range of particle size distribution, until the diameter of the gold-sprayed particles at the current moment is equal to the optimal central particle size value.

[0218] In the implementation of the present invention, in response to the gold spraying control request for the target capacitor, the film thickness data of the target capacitor is obtained; based on the film thickness data and the preset particle size coefficient table, the particle size wide distribution range is determined; the diameter of the gold spraying particles in the preset radius area when the target capacitor is subjected to the gold spraying operation is detected to determine whether the diameter of the gold spraying particles is in the particle size wide distribution range; when the diameter of the gold spraying particles is not in the particle size wide distribution range, the operating parameters of the spray gun are adjusted according to the preset step value until the diameter of the gold spraying particles is in the particle size wide distribution range. The present invention achieves effective control of the diameter of the gold spraying particles during the gold spraying operation by accurately detecting the diameter of the gold spraying particles outside the spray gun during the gold spraying process. The diameter of the gold spraying particles is accurately controlled within a specific proportional range of the film thickness, thereby ensuring that the gold spraying particles can smoothly enter the gap between the two layers of film. In this process, the gold spraying particles are attached to the coating of the metallized film by means of the side, and this attachment method can effectively increase the contact area. As the contact area increases, the adhesion of the gold spraying layer is enhanced, and the contact resistance is reduced. The enhancement of the adhesion of the gold spraying layer and the reduction of the contact resistance help to improve the overcurrent capacity and current impact resistance of the capacitor, and ultimately improve the gold spraying performance of the metallized film capacitor, thereby improving the overall quality of the capacitor. The technical problem of how to improve the gold spraying performance of the metallized film capacitor and thus improve the overall quality of the capacitor has been solved.

[0219] See also Figure 6 , Figure 6 This is a structural block diagram of a computer device provided in Embodiment 4 of the present invention.

[0220] An electronic device according to an embodiment of the present invention comprises: a memory 401 and a processor 402, wherein the memory 402 stores a computer program; when the computer program is executed by the processor 402, the processor 402 executes the gold spraying control method for a thin film capacitor according to any of the above embodiments.

[0221] The memory 401 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read-only memory), an EPROM, a hard disk or a ROM. The memory 401 has a storage space 403 for a program code 413 for executing any method step in the above method. For example, the storage space 403 for the program code may include individual program codes 413 for implementing the various steps in the above method, respectively. These program codes may be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. The program code may be compressed, for example, in an appropriate form. When these codes are run by a computing and processing device, the computing and processing device performs the various steps in the method described above. These program codes may be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. The program code may be compressed, for example, in an appropriate form. When these codes are executed by a computing and processing device, they cause the computing and processing device to execute the various steps in the above-described method for controlling the gold spraying of a thin film capacitor.

[0222] Embodiment 5 of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method for controlling the gold spraying of a thin film capacitor according to any of the above embodiments is implemented.

[0223] Embodiment 6 of the present invention further provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer executes a method for controlling the gold spraying of a thin film capacitor as described in any of the above embodiments.

[0224] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0225] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0226] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0227] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0228] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0229] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling the gold spraying of a film capacitor, characterized in that: include: In response to a request for controlling the spraying of gold on a target capacitor, obtaining film thickness data of the target capacitor; Determining a particle size wide distribution range based on the film thickness data and a preset particle size coefficient table; Detecting the diameter of the gold-spraying particles within a preset radius area when the target capacitor is subjected to a gold-spraying operation; Determining whether the diameter of the gold-sprayed particles is within the wide particle size distribution range; When the diameter of the gold-sprayed particles is not within the wide particle size distribution range, the operating parameters of the spray gun are adjusted according to a preset step value until the diameter of the gold-sprayed particles is within the wide particle size distribution range.

2. The method for controlling the gold spraying of a thin film capacitor according to claim 1, characterized in that: The step of determining the particle size wide distribution range based on the film thickness data and a preset particle size coefficient table comprises: Using the film thickness data to retrieve a preset particle size coefficient table to determine the particle size coefficient; Wherein, the particle size coefficient includes an upper particle size limit coefficient and a lower particle size limit coefficient; The film thickness data is multiplied by the particle size upper limit coefficient to obtain the upper limit value of the particle size wide distribution range; The film thickness data is multiplied by the particle size lower limit coefficient to obtain the lower limit value of the particle size wide distribution range.

3. The method for controlling the gold spraying of a thin film capacitor according to claim 1, characterized in that: The detecting of the diameter of the gold-spraying particles within a preset radius area when the target capacitor is subjected to the gold-spraying operation comprises: Performing Fraunhofer diffraction detection on the gold-spraying particle mist within a preset radius area sprayed by the spray gun during the gold-spraying operation on the target capacitor, and acquiring optical detection data and the diffraction measurement data associated with the plurality of gold-spraying particles within the gold-spraying particle mist; Determining particle diameter data and light energy data of the gold-sprayed particles associated with each of the gold-sprayed particles based on the optical detection data and the diffraction measurement data; The diameter of the gold-sprayed particles is determined according to the particle diameter data associated with each of the gold-sprayed particles and the light energy data of the gold-sprayed particles.

4. The method for controlling the gold spraying of a thin film capacitor according to claim 1, characterized in that: The optical detection data includes the incident light wave length and the lens focal length, the diffraction measurement data includes the diffraction angle and the diffraction light intensity, and the particle diameter data and the light energy data of the gold-sprayed particles associated with each of the gold-sprayed particles are determined based on the optical detection data and the diffraction measurement data, including: Based on the incident light wavelength and the lens focal length, the diffraction angles and diffraction light intensities associated with a plurality of the gold-sprayed particles are respectively used to input a preset diffraction light intensity distribution function for numerical solution to determine the particle diameter data associated with each of the gold-sprayed particles; Based on the preset constants, the incident light wavelength and the incident light intensity, the diffraction angles and the particle diameter data associated with the multiple gold-sprayed particles are respectively input into the preset gold-sprayed particle light energy function for numerical solution to determine the gold-sprayed particle light energy data associated with each of the gold-sprayed particles.

5. The method for controlling the gold spraying of a thin film capacitor according to claim 1, characterized in that: The operating parameters include gun distance parameters, compressed air pressure parameters and fuse current parameters.

6. The method for controlling the gold spraying of a film capacitor according to claim 2, characterized in that: Also includes: When the diameter of the gold-sprayed particles is within the particle size wide distribution range, the particle size distribution upper limit value and the particle size distribution lower limit value are used to perform mean calculation to obtain the optimal center particle size value; Based on the wide particle size distribution range, a preset narrow range upper limit coefficient and a preset narrow range lower limit coefficient are used to perform calculations to obtain an upper limit value and a lower limit value of the narrow particle size distribution range; Determine whether the diameter of the gold-sprayed particles at the current moment is within the narrow particle size distribution range; When the diameter of the gold-sprayed particles at the current moment is in the narrow range of the particle size distribution, the preset step value is reduced until the diameter of the gold-sprayed particles at the current moment is equal to the optimal central particle size value.

7. A gold spraying control system for a film capacitor, characterized in that: include: A response module, used for responding to a spraying control request for a target capacitor and acquiring film thickness data of the target capacitor; An interval determination module, for determining a particle size wide distribution interval based on the film thickness data and a preset particle size coefficient table; A particle size detection module, used to detect the diameter of the gold-sprayed particles when the target capacitor is subjected to a gold-spraying operation; A wide interval judgment module, used to judge whether the diameter of the gold-sprayed particles is within the wide particle size distribution interval; The control module is used to adjust the operating parameters of the spray gun according to a preset step value when the diameter of the gold-sprayed particles is not within the wide particle size distribution range, until the diameter of the gold-sprayed particles is within the wide particle size distribution range.

8. An electronic device, characterized in that: It comprises a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the gold spraying control method for a thin film capacitor as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed, the method for controlling the gold spraying of a thin film capacitor as described in any one of claims 1 to 6 is implemented.

10. A computer program product, characterized in that The computer program product includes a computer program stored on a non-transitory computer-readable storage medium, wherein the computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer executes the gold spraying control method for a thin film capacitor as described in any one of claims 1-6.

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