Process parameter calculation method, system and equipment based on energy storage welding and medium

Abstract

The invention relates to the technical field of energy storage welding, and provides a process parameter calculation method, system and equipment based on energy storage welding and a medium. The method comprises the steps that target parameters such as an energy storage component, a welding process, the size of a to-be-welded component and material characteristics are obtained; combing the correlation between the resistance ratio and the energy ratio and screening the optimal ratio; according to the physical relation between the contact resistance and the contact area, the deformation amount needed by an energy ring is calculated, the set pressure intensity is obtained by combining material characteristic parameters, meanwhile, the set input voltage is calculated through parameters such as welding energy density, and the two parameters serve as equipment technological parameters for welding. According to the method, the known welding related information is calculated, so that the process parameters are quickly obtained, the test and trial-and-error cost is reduced, the verification period is shortened, and the product import efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of energy storage welding technology, and more specifically, to a method, system, equipment, and medium for calculating process parameters based on energy storage welding. Background Technology

[0002] The content in this section only provides background information related to this invention and may not constitute prior art.

[0003] Energy storage welding and sealing is a common process in the hermetic packaging of integrated circuits. It plays an irreplaceable role in many fields such as single-tube discrete devices and irregularly shaped metal packages. Its products are widely used in cutting-edge defense fields such as aerospace, deep sea, and missiles, and are especially suitable for the hermetic packaging of small and medium-sized cavity and high-reliability hybrid integrated circuits. Its core working principle is to use a fixture to place the metal base and cap on the upper and lower electrodes of the energy storage welding process (e.g., ...). Figure 6 As shown, the structure includes an upper electrode, a base, an energy ring, a cap, and a lower electrode. It utilizes an energy storage capacitor to store electrical energy for an extended period, releasing a large current at the moment the upper and lower electrodes come into contact. The metal cap and base are in close contact under pressure, and the electrode clamp resistance between the electrodes and the shell... The contact resistance between the cap and the energy ring protrusion of the base is extremely small. Larger, and much smaller Electricity will The energy is instantly converted into heat, forming a fusion weld between the metals to complete the sealing weld.

[0004] From the perspective of circuit principles (such as...) Figure 7 As shown), during the energy storage stage, switch S1 is closed, powered by a power supply resistor and capacitor. This forms a charging circuit. After charging is complete, the voltage across the capacitor is equal. Energy storage is provided by The decision is made during the energy release phase: S1 is open and S2 is closed. The circuit mainly consists of... Transformer and To ensure optimal energy at the weld joint, the following configuration is required. Larger Smaller, and The welding process is affected by the properties of the material being welded and the pressure. In engineering applications, energy storage welding equipment mainly regulates the pressure and energy storage voltage. The goal is to find the optimal process solution to meet the requirements for weld airtightness and appearance.

[0005] However, the existing technology has obvious drawbacks: when introducing new products, the process parameters need to be confirmed through multiple rounds of repeated verification due to the influence of the material properties of the items to be welded, the circumference of the welding ring, and the width of the welding ring, which takes several days or even weeks and seriously affects the efficiency of product introduction; at the same time, due to the influence of parameter combinations, a large number of orthogonal experiments are also required, resulting in high time and cost for product debugging and verification. Summary of the Invention

[0006] The purpose of this invention is to provide a method, system, equipment, and medium for calculating process parameters based on energy storage welding, in order to improve the aforementioned problems. To achieve the above objective, the technical solution adopted by this invention is as follows: Firstly, this application provides a method for calculating process parameters based on energy storage welding, including: S101, Obtain target parameters, including the capacitance value of the energy storage capacitor, the transfer coefficient of the welding process, the maximum distribution coefficient of energy storage welding on the welding surface, the welding energy density, the electrode contact length between the cap to be welded and the electrode, the initial contact length of the energy ring on the base to be welded, the elastic modulus and Poisson's ratio of the base material to be welded, and the welding contact area; S102, based on the theoretical energy formula preset for sealing welding in the energy storage welding process, obtain the first correlation between the energy stored in the capacitor, the resistive heat of the energy loop contact resistance, the input voltage, the energy loop contact resistance, and the electrode clamp resistance; and obtain the influence relationship between the first ratio of the energy loop contact resistance to the electrode clamp resistance and the second ratio of the energy stored in the capacitor and the resistive heat; and select the target second ratio when the first ratio is the largest; S103, based on the physical relationship that contact resistance is inversely proportional to the square root of the contact area, the actual contact length of the energy ring after compression is calculated according to the second ratio of the electrode contact length and the target; the required deformation is obtained by calculating the difference between the actual contact length of the energy ring and the initial contact length. S104, Substitute the required deformation, material elastic modulus, material Poisson's ratio, and electrode contact length into the preset formula to obtain the required pressure value, and calculate the set pressure based on the welding contact area and the required pressure value; S105, Calculate the set input voltage value. The set input voltage value is obtained by calculating the welding energy density, welding contact area, maximum distribution coefficient, transmission coefficient, and capacitance value. S106 sets the pressure value and input voltage value as process parameters for the energy storage welding equipment and performs energy storage welding operation on the product to be welded.

[0007] Furthermore, the target second ratio is 0.5.

[0008] Furthermore, the step of calculating the actual contact length of the energy loop under pressure based on the electrode contact length and the second target ratio specifically includes: Based on the physical relationship that contact resistance is inversely proportional to the square root of contact area, the target second ratio is determined to be physically the ratio between the square root of the electrode contact length and the square root of the actual contact length of the energy ring; based on the ratio and the electrode contact length, the actual contact length of the energy ring is calculated.

[0009] Furthermore, the preset formula is: In the formula, The required deformation amount; The required pressure value; The elastic modulus of the energy ring material; Poisson's ratio for energy ring materials; This represents the electrode contact length.

[0010] Furthermore, the energy storage welding operation on the product to be welded specifically includes: Perform a preset number of test welds on the products to be welded to test the welding strength and sealing performance of the products. If the preset standard is not met, adjust the set pressure value and set input voltage value and re-test weld until the preset standard is met.

[0011] Secondly, this application also provides a process parameter calculation system based on energy storage welding, including: The parameter acquisition module is used to acquire target parameters, including the capacitance value of the energy storage capacitor, the transfer coefficient of the welding process, the maximum distribution coefficient of energy storage welding on the welding surface, the welding energy density, the electrode contact length between the cap to be welded and the electrode, the initial contact length of the energy ring on the base to be welded, the elastic modulus and Poisson's ratio of the base material to be welded, and the welding contact area. The ratio filtering module is used to obtain the first correlation between the energy stored in the capacitor, the resistive heat of the energy loop contact resistance, the input voltage, the energy loop contact resistance, and the electrode clamp resistance, based on the theoretical energy formula preset for sealing welding in the energy storage welding process; and to obtain the influence relationship between the first ratio of the energy loop contact resistance to the electrode clamp resistance and the second ratio of the energy stored in the capacitor and the resistive heat; and to filter out the target second ratio when the first ratio is the largest. The deformation calculation module is used to calculate the actual contact length of the energy ring under pressure based on the physical relationship that the contact resistance is inversely proportional to the square root of the contact area, and the second ratio of the electrode contact length to the target; the difference between the actual contact length and the initial contact length of the energy ring is calculated to obtain the required deformation. The pressure calculation module is used to substitute the required deformation, material elastic modulus, material Poisson's ratio, and electrode contact length into a preset formula to obtain the required pressure value, and to calculate the set pressure based on the welding contact area and the required pressure value; The voltage calculation module is used to calculate the set input voltage value, which is obtained by calculating the welding energy density, welding contact area, maximum distribution coefficient, transmission coefficient, and capacitance value. The parameter welding module is used to set the set pressure value and set the set input voltage value as the process parameters of the energy storage welding equipment, and to perform energy storage welding operation on the product to be welded.

[0012] Thirdly, this application also provides an electronic device, including: Memory, used to store computer programs; A processor is configured to implement the method steps as described in the first aspect when executing the computer program.

[0013] Fourthly, this application also provides a readable storage medium storing a computer program, which, when executed by a processor, implements the method steps of the first aspect.

[0014] The beneficial effects of this invention are: This invention acquires various target parameters required for energy storage welding, including parameters related to energy storage components, parameters related to welding process transmission and distribution, parameters related to welding energy, contact size parameters of the component to be welded, and material properties of the base to be welded. Combining the theoretical energy correlation of energy storage welding, it analyzes the influence relationship between relevant resistance ratios and energy ratios and selects the optimal ratio. Then, based on the physical correlation between contact resistance and contact area, it calculates the actual contact length of the energy ring under pressure and the required deformation. Subsequently, it calculates the set pressure based on material properties and contact size parameters, and simultaneously calculates the set input voltage based on energy density, contact area, and other relevant parameters. Finally, it sets the set pressure and set input voltage as the process parameters for the energy storage welding equipment, completing the energy storage welding operation of the product to be welded. This method, by calculating known information such as welding material properties, welding dimensions, and nominal values ​​of the equipment's energy storage units, quickly obtains the required process parameters, reducing testing and trial-and-error costs, shortening the verification cycle, reducing the frequency of trial and error, and improving product introduction efficiency. Attached Figure Description

[0015] Figure 1 A flowchart illustrating a method for calculating process parameters based on energy storage welding, provided by this invention; Figure 2 This is a schematic diagram illustrating the influence relationship between the first ratio and the second ratio in this invention; Figure 3 This is a schematic diagram of the welding structure in this invention; Figure 4 This invention provides a schematic diagram of a process parameter calculation system for energy storage welding. Figure 5 A schematic diagram of an electronic device provided by the present invention; Figure 6 This is a schematic diagram of the energy storage welding fixture in this invention; Figure 7 This is a schematic diagram of the energy storage welding circuit in this invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] An embodiment of the present invention proposes a method for calculating process parameters based on energy storage welding, comprising: S101, Obtain target parameters, including the capacitance value of the energy storage capacitor, the transfer coefficient of the welding process, the maximum distribution coefficient of the energy storage welding on the welding surface, the welding energy density, the electrode contact length between the cap to be welded and the electrode, the initial contact length of the energy ring on the base to be welded, the elastic modulus and Poisson's ratio of the base material to be welded, and the welding contact area.

[0018] Specifically, the capacitance value of the energy storage capacitor is an inherent physical parameter of the energy storage welding equipment, determined by the equipment design and manufacturing standards. It is the core representation of energy storage capacity, and its value is directly related to the calculation of the energy that the capacitor can store. It provides a fixed benchmark for the subsequent derivation of the input voltage setting and ensures the consistency of energy calculation.

[0019] The transfer coefficient of the welding process reflects the degree of energy loss during the transfer of energy between the equipment, electrodes and the welding surface. Its value is based on the practical accumulation and experimental calibration of the energy storage welding process. Accurately obtaining this parameter can avoid insufficient or excessive welding energy due to the estimation deviation of loss in energy calculation, and ensure that the energy actually applied to the welding surface meets the requirements.

[0020] The maximum distribution coefficient of energy storage welding on the welding surface is determined by the resistance distribution law and energy transfer characteristics of the energy storage welding circuit. It is the key basis for the efficient accumulation of energy on the welding surface. Its value is determined through theoretical analysis and process verification, providing core coefficient support for the calculation of total energy demand and ensuring the optimality of energy distribution.

[0021] Welding energy density is a core indicator for achieving effective fusion welding. It must meet the process requirements of melting the coating of the product to be welded and bonding between metals. Based on the industry standards and product reliability requirements of integrated circuit hermetic packaging, it directly determines the welding strength and sealing performance and is the key basis for calculating total energy.

[0022] The electrode contact length between the cap to be welded and the electrode is precisely obtained through the product assembly drawings. Its value reflects the contact state between the electrode and the cap, and directly determines the magnitude of the electrode clamp resistance. The electrode clamp resistance is an important factor affecting energy distribution, providing benchmark data for the subsequent optimization calculation of the energy loop contact length.

[0023] The initial contact length of the energy ring on the base to be welded is obtained through the base design drawings. It represents the original contact state of the energy ring when it is not under pressure. It is the basis for calculating the deformation of the energy ring after it is under pressure. Its accuracy directly affects the accuracy of the pressure parameter derivation and ensures the compatibility between pressure and contact length.

[0024] The elastic modulus and Poisson's ratio of the material of the base to be welded are the core parameters characterizing the mechanical properties of the base material. They are obtained by consulting the material property handbook, reflecting the deformation law of the material under pressure, providing mechanical theoretical support for the derivation of the pressure value, and ensuring that the pressure parameters match the material properties.

[0025] The welding contact area is calculated from the product structure dimensions and is the effective area for energy application and pressure application. Its value directly affects the accurate calculation of the set pressure and welding energy, providing a geometric basis for the adaptation of process parameters and product structure.

[0026] S102, based on the theoretical energy formula preset for sealing welding in the energy storage welding process, obtain the first correlation between the energy stored in the capacitor, the resistive heat of the energy loop contact resistance, the input voltage, the energy loop contact resistance, and the electrode clamp resistance; and obtain the influence relationship between the first ratio of the energy loop contact resistance to the electrode clamp resistance and the second ratio of the energy stored in the capacitor and the resistive heat; and select the target second ratio when the first ratio is the largest; Specifically, firstly, the core of energy storage welding is to convert the electrical energy stored in the capacitor into the heat energy required for welding, thereby achieving the fusion sealing of the components to be welded. The preset theoretical energy formula for sealing welding is derived based on the law of conservation of energy conversion in energy storage welding, the principle of resistance heating effect, and the process characteristics of energy storage welding for integrated circuit hermetically sealed packaging. During the energy storage phase, the energy stored in the capacitor is: (1) In the formula, To store energy in a capacitor; This refers to the transient current during the charging process. Input voltage; This is the capacitance value.

[0027] During the release phase, resistive heat is generated by the contact resistance of the energy loop. for: (2) In the formula, For electrode clamp resistance; This refers to the contact resistance of the energy loop.

[0028] This formula fully considers the energy accuracy requirements of sealed welding, accurately characterizing the conversion law of electrical and thermal energy and the influence of various related parameters on energy conversion. Specifically, the energy stored in the capacitor is determined by the capacitance value obtained in S101 and the input voltage to be calculated, and is the source of welding energy; the resistive heat of the energy loop contact resistance is the main component of energy loss, and its magnitude is directly related to the contact resistance of the energy loop; the electrode clamp resistance is determined by the electrode contact length in S101, indirectly affecting energy transfer and loss; and the input voltage is the key variable controlling the energy stored in the capacitor. The first correlation obtained through this theoretical energy formula essentially clarifies the quantitative constraints between the above parameters, breaking the limitation of isolated calculations of each parameter. This provides a unified theoretical framework for the derivation of subsequent process parameters, ensuring consistent calculation logic and mutual compatibility of each parameter, avoiding calculation deviations caused by a lack of correlation between parameters, and laying the foundation for the accuracy of process parameters.

[0029] Secondly, the influence relationship between the first ratio of the energy ring contact resistance to the electrode clamp resistance and the second ratio of the energy stored in the capacitor and the resistive heat is obtained, such as... Figure 2 As shown. The principle is that the first ratio of the energy loop contact resistance to the electrode clamp resistance directly reflects the resistance distribution pattern during welding, and this resistance distribution determines the energy loss and concentration direction—the greater the resistance, the more concentrated the energy loss (in the form of resistance heat). The second ratio of the energy stored in the capacitor to the resistance heat reflects the conversion efficiency of the capacitor's stored energy, that is, the ratio of stored energy used for resistance loss to the ratio used for effective welding. According to the resistance heat effect and the principle of energy conservation, changes in the resistance distribution ratio (first ratio) directly lead to changes in the energy conversion ratio (second ratio). There is a clear positive or negative correlation between the two, clearly revealing the intrinsic connection between resistance distribution and energy conversion. This provides a key basis for subsequent selection of optimal process parameters, avoiding energy waste or insufficient welding energy caused by blindly setting parameters, and ensuring a balance between energy utilization efficiency and welding effect.

[0030] Finally, the target second ratio when the first ratio is maximized is selected; the target second ratio is 0.5. The principle is that the maximum first ratio means the energy ring contact resistance relative to the electrode clamp resistance reaches its maximum value. At this point, the resistance heat will be concentrated to the maximum extent in the energy ring contact area (i.e., the welding core area), effectively reducing energy loss in non-welding areas such as the electrode and clamp, achieving efficient energy accumulation on the welding surface. This aligns with the optimal energy distribution target pursued by the "maximum distribution coefficient" in S101 above, meeting the process requirements for efficient welding in energy storage welding. After extensive process testing and theoretical analysis, setting the corresponding second ratio to 0.5 when the first ratio reaches its maximum value is the optimal choice. This value achieves the optimal balance between capacitor energy storage and resistance heat, i.e., when the electrode clamp resistance... At a certain time, the welding energy of the energy ring and the contact resistance of the energy ring... The relationship showed an initial upward trend followed by a downward trend. When it is less than 0.5, as With the increase of energy, the welding energy of the energy ring increases; in When it is greater than 0.5, as The increase in resistance reduces welding energy. This ensures that the heat loss of the resistance is within a reasonable range, avoiding excessive loss that would lead to insufficient welding energy, while also ensuring that a sufficient proportion of the energy stored in the capacitor is converted into effective welding energy, meeting the requirements for welding energy density and adapting to the process standards and product reliability requirements of integrated circuit hermetically sealed packaging.

[0031] S103, based on the physical relationship that contact resistance is inversely proportional to the square root of the contact area, the actual contact length of the energy ring after compression is calculated according to the second ratio of the electrode contact length and the target; the required deformation is obtained by calculating the difference between the actual contact length of the energy ring and the initial contact length. First, the expression for this physical relationship is as follows: (3) The principle is that the contact resistance is essentially the resistance encountered when current passes through the contact interface of the parts to be welded. The magnitude of this resistance is directly related to the width of the current flow path—the larger the contact area, the wider the current path and the smaller the resistance, and vice versa; that is, the contact resistance is inversely proportional to the square root of the contact area.

[0032] Secondly, under this physical relationship, the actual contact length of the energy loop after compression is calculated based on the ratio of the electrode contact length to the target second ratio. The specific principle and logic are as follows: As previously stated, the electrode clamp resistance... Determined by the electrode contact length (the electrode contact length is precisely obtained from the product assembly drawings, such as...). Figure 3 As shown, it directly reflects the contact state between the electrode and the cap to be soldered, and is a characterization of... (Core geometric parameters of size), energy loop contact resistance The second ratio is determined by the contact length of the energy ring, and the target second ratio is the first ratio. / The optimal value corresponding to the maximum value (0.5) is that the core function of this ratio is to ensure that welding energy is efficiently concentrated in the energy ring contact area (welding core area) and reduce energy loss in non-welding areas. Based on the physical relationship established above that "contact resistance is inversely proportional to the square root of the contact area", combined with the positive correlation between contact area and contact length (contact line length of cross section) (the longer the contact length, the larger the contact area per unit cross section), it can be deduced that: It is inversely proportional to the square root of the electrode contact length. It is inversely proportional to the square root of the energy ring contact length. Therefore, the target second ratio ( / =0.5) can be further converted into electrode contact length The quantitative proportional relationship between the square root of the energy ring and the square root of the actual contact length of the energy ring is established. By substituting this proportional relationship with the known electrode contact length (possessing a clear geometric reference and data accuracy), the actual contact length of the energy ring under pressure can be accurately calculated. (Right now =0.25 This length is the ideal contact length for achieving optimal energy distribution. Its physical significance lies in ensuring that the contact resistance R2 of the energy loop is within the optimal range that matches R1, providing geometric assurance for maximizing the utilization of welding energy.

[0033] Furthermore, calculate the actual contact length and the initial contact length of the energy ring. The difference between the initial contact length and the actual contact length is used to determine the required deformation. The initial contact length is precisely obtained from the base design drawings and represents the original contact state of the energy ring before it is subjected to welding pressure. It is a key parameter reflecting the initial geometric characteristics of the energy ring, and its accuracy directly determines the accuracy of subsequent deformation calculations, serving as the fundamental input for ensuring the reliability of process parameter derivation. The actual contact length of the energy ring is an ideal geometric parameter derived based on the optimal energy distribution target. It represents the contact state that the energy ring should achieve during welding to achieve efficient welding energy concentration. The required deformation is the difference between the two, and its physical meaning lies in quantifying the material geometric deformation required to achieve this ideal contact state. In other words, to transform the energy ring from the initial contact state to the optimal actual contact state, welding pressure needs to be applied to cause the energy ring to deform accordingly. This deformation is the core requirement indicator for the derivation of pressure parameters. The core function of this step is to further transform the energy optimization target into the mechanical deformation requirement of the material, establishing a logical chain of "optimal energy → optimal resistance → optimal contact length → deformation requirement." This provides a clear target guidance and data support for the derivation of pressure values ​​in subsequent steps, ensuring that the setting of subsequent pressure parameters can accurately match the core requirements of energy optimization.

[0034] S104, substitute the required deformation, material elastic modulus, material Poisson's ratio and electrode contact length into the preset formula to obtain the required pressure value, and calculate the set pressure based on the welding contact area and the required pressure value.

[0035] The preset formula is as follows: (4) In the formula, The required deformation amount; The required pressure value; The elastic modulus of the energy ring material; Poisson's ratio for energy ring materials; This represents the electrode contact length.

[0036] Then, the set pressure is calculated based on the welding contact area and the required pressure value. This process involves dividing the required pressure value by the pre-obtained welding contact area, and the result is the set pressure. The welding contact area is the effective area for energy application and pressure exertion, precisely calculated from the product's structural dimensions. The required pressure value is the total force required to induce the necessary deformation in the energy ring to achieve the optimal contact length. By calculating the ratio of these two values, the total force can be converted into a pressure parameter per unit welding contact area, i.e., the set pressure, which is used to set the pressure parameters for the energy storage welding equipment.

[0037] S105, Calculate the set input voltage value. The set input voltage value is obtained by calculating the welding energy density, welding contact area, maximum distribution coefficient, transmission coefficient, and capacitance value. Specifically, in the traditional electronic packaging field, the plating layer on the energy storage soldering surface is typically a 5 to 8 μm thick electroless nickel plating layer; soldering energy density It is necessary to ensure that the efficiency reaches 0.1 to 0.2 J / mm. 2 Energy storage welding is distributed at the maximum coefficient on the welding surface. The coefficient is 0.148; due to various losses during the welding process, the overall transfer coefficient is... It ranges from 0.05 to 0.01. Therefore, the formula for the total energy required is... as follows: (5) (6) (7) Based on formula (5) and the perimeter of the weld seam of the object to be welded, the total required reserve energy can be calculated; then, based on formula (7) and the fixed capacitance value of the equipment... Calculate the required input voltage .

[0038] S106 sets the pressure value and input voltage value as process parameters for the energy storage welding equipment and performs energy storage welding operation on the product to be welded.

[0039] Specifically, the core function of setting the pressure value is to achieve the desired effect by precisely controlling the contact length of the energy ring. =0.25 The optimal state ensures that the contact resistance R2 of the energy ring and the resistance R1 of the electrode clamp form an optimal ratio of R2 / R1=0.5, ensuring that the welding energy is efficiently concentrated in the contact area of ​​the energy ring (the core welding area) and avoiding ineffective energy loss in non-welding areas. The input voltage value is calculated based on the welding energy density, welding contact area, maximum energy distribution coefficient, and comprehensive transfer coefficient, which can precisely control the stored energy of the energy storage capacitor to ensure that the heat energy converted from electrical energy meets the process requirements of melting the plating of the product to be welded and metal-to-metal fusion welding. These two parameters are the core process parameters for the energy storage welding equipment to achieve effective sealing welding. After being substituted into the equipment parameter setting module, the equipment can start the welding process according to the preset pressure application standard and energy release law. The set pressure is applied to the cap and base of the product to be welded through the upper and lower electrodes, while releasing the electrical energy stored in the capacitor. A stable and uniform fusion welding interface is formed in the contact area of ​​the energy ring, and finally the hermetically sealed packaging operation of the product to be welded is completed. This setting process directly follows the parameter results derived from physical laws and mathematical models in the previous text, ensuring the theoretical adaptability and scientific nature of the process parameters.

[0040] In this process, the energy storage welding operation is performed on the products to be welded. A preset number of test welds are performed on the products to be welded to check the welding strength and sealing performance of the test welds. If the preset standard is not met, the set pressure value and the set input voltage value are adjusted and the test weld is repeated until the preset standard is met.

[0041] Based on the above method, this embodiment uses a certain type of energy storage welding equipment to perform energy storage welding on a 20mm x 20mm square cap; the welding equipment has a capacitor of 50mF; the cap plating index is Ni5b, i.e., a nickel layer thickness of 5μm, and the curvature of the energy ring contact end face is approximately 50μm; the cap is made of stainless steel, and the base is made of a valve-compatible alloy material. Referring to the drawings, the length of the contact surface between the electrode and the cap to be welded is... It is 1.2mm; initial contact length The actual contact length of the energy ring is 0.1 mm. 0.3mm; required deformation The elastic modulus of the energy ring material is 0.2 mm. Valveable alloy, 141 GPa; welding energy density Take the median value of 0.16 J / mm 2 Contact area 24mm 2 Fixed capacitance value The voltage is 50mF; calculated based on the above formula, the pressure is set to 0.61MPa; input voltage It is 148.13V.

[0042] like Figure 4 As shown, based on the same inventive concept, this embodiment provides a process parameter calculation system for energy storage welding, including: The parameter acquisition module is used to acquire target parameters, including the capacitance value of the energy storage capacitor, the transfer coefficient of the welding process, the maximum distribution coefficient of energy storage welding on the welding surface, the welding energy density, the electrode contact length between the cap to be welded and the electrode, the initial contact length of the energy ring on the base to be welded, the elastic modulus and Poisson's ratio of the base material to be welded, and the welding contact area. The ratio filtering module is used to obtain the first correlation between the energy stored in the capacitor, the resistive heat of the energy loop contact resistance, the input voltage, the energy loop contact resistance, and the clamp resistance, based on the theoretical energy formula preset for sealing welding in the energy storage welding process; and to obtain the influence relationship between the first ratio of the energy loop contact resistance to the electrode clamp resistance and the second ratio of the energy stored in the capacitor and the resistive heat; and to filter out the target second ratio when the first ratio is the largest. The deformation calculation module is used to calculate the actual contact length of the energy ring under pressure based on the physical relationship that the contact resistance is inversely proportional to the square root of the contact area, and the second ratio of the electrode contact length to the target; the difference between the actual contact length and the initial contact length of the energy ring is calculated to obtain the required deformation. The pressure calculation module is used to substitute the required deformation, material elastic modulus, material Poisson's ratio, and electrode contact length into a preset formula to obtain the required pressure value, and to calculate the set pressure based on the welding contact area and the required pressure value; The voltage calculation module is used to calculate the set input voltage value, which is obtained by calculating the welding energy density, welding contact area, maximum distribution coefficient, transmission coefficient, and capacitance value. The parameter welding module is used to set the set pressure value and set the set input voltage value as the process parameters of the energy storage welding equipment, and to perform energy storage welding operation on the product to be welded.

[0043] like Figure 5 As shown, based on the same inventive concept, this embodiment provides an electronic device, including: Memory, used to store computer programs; A processor is used to implement the method steps as described in the first aspect when executing a computer program.

[0044] Based on the same inventive concept, this embodiment provides a readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, it implements the method steps as described in the first aspect.

[0045] It should be noted that the specific methods by which each module performs operations in the system described in the above embodiments have been described in detail in the embodiments related to the method, and will not be elaborated here.

[0046] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for calculating process parameters based on energy storage welding, characterized in that... ,include: S101, Obtain target parameters, including the capacitance value of the energy storage capacitor, the transfer coefficient of the welding process, the maximum distribution coefficient of the energy storage welding on the welding surface, the welding energy density, the electrode contact length between the cap to be welded and the electrode, the initial contact length of the energy ring on the base to be welded, the elastic modulus and Poisson's ratio of the base material to be welded, and the welding contact area; S102, based on the theoretical energy formula preset for sealing welding in the energy storage welding process, obtain the first correlation between the energy stored in the capacitor, the resistive heat of the energy loop contact resistance, the input voltage, the energy loop contact resistance, and the electrode clamp resistance; and obtain the influence relationship between the first ratio of the energy loop contact resistance to the electrode clamp resistance and the second ratio of the energy stored in the capacitor and the resistive heat; and select the target second ratio when the first ratio is the largest. S103, based on the physical relationship that contact resistance is inversely proportional to the square root of the contact area, the actual contact length of the energy ring after compression is calculated according to the electrode contact length and the second target ratio; the required deformation is obtained by calculating the difference between the actual contact length of the energy ring and the initial contact length. S104, Substitute the required deformation, the material's elastic modulus, the material's Poisson's ratio, and the electrode contact length into a preset formula to obtain the required pressure value, and calculate the set pressure based on the welding contact area and the required pressure value; S105, Calculate the set input voltage value, which is obtained by calculating the welding energy density, welding contact area, maximum distribution coefficient, transmission coefficient, and capacitance value; S106, The set pressure value and the set input voltage value are set as process parameters of the energy storage welding equipment, and the energy storage welding operation is performed on the product to be welded.

2. The method for calculating process parameters based on energy storage welding according to claim 1, characterized in that... The target second ratio is 0.

5.

3. The method for calculating process parameters based on energy storage welding according to claim 1, characterized in that... The step of calculating the actual contact length of the energy ring under pressure based on the electrode contact length and the second target ratio specifically includes: Based on the physical relationship that the contact resistance is inversely proportional to the square root of the contact area, the target second ratio is determined to be physically the ratio between the square root of the electrode contact length and the square root of the actual contact length of the energy ring; based on the ratio and the electrode contact length, the actual contact length of the energy ring is calculated.

4. The method for calculating process parameters based on energy storage welding according to claim 1, characterized in that... The preset formula is: In the formula, The required deformation amount; The required pressure value; The elastic modulus of the energy ring material; Poisson's ratio for energy ring materials; This represents the electrode contact length.

5. The method for calculating process parameters based on energy storage welding according to claim 1, characterized in that... The energy storage welding operation on the product to be welded specifically includes: Perform a preset number of test welds on the products to be welded to test the welding strength and sealing performance of the products. If the preset standard is not met, adjust the set pressure value and set input voltage value and re-test weld until the preset standard is met.

6. A process parameter calculation system for energy storage welding, based on the process parameter calculation method for energy storage welding as described in claim 1, characterized in that... ,include: The parameter acquisition module is used to acquire target parameters, including the capacitance value of the energy storage capacitor, the transfer coefficient of the welding process, the maximum distribution coefficient of energy storage welding on the welding surface, the welding energy density, the electrode contact length between the cap to be welded and the electrode, the initial contact length of the energy ring on the base to be welded, the elastic modulus and Poisson's ratio of the base material to be welded, and the welding contact area. The ratio filtering module is used to obtain a first correlation between the energy stored in the capacitor, the resistive heat of the energy loop contact resistance, the input voltage, the energy loop contact resistance, and the electrode clamp resistance, based on a preset theoretical energy formula for sealing welding in the energy storage welding process; and to obtain the influence relationship between the first ratio of the energy loop contact resistance to the electrode clamp resistance and the second ratio of the energy stored in the capacitor and the resistive heat; and to filter out the target second ratio when the first ratio is the largest. The deformation calculation module is used to calculate the actual contact length of the energy ring under pressure based on the physical relationship that the contact resistance is inversely proportional to the square root of the contact area, and the second ratio of the electrode contact length to the target; and to calculate the required deformation by the difference between the actual contact length of the energy ring and the initial contact length. The pressure calculation module is used to substitute the required deformation, the material's elastic modulus, the material's Poisson's ratio, and the electrode contact length into a preset formula to obtain the required pressure value, and to calculate the set pressure based on the welding contact area and the required pressure value; The voltage calculation module is used to calculate the set input voltage value, which is obtained by calculating the welding energy density, welding contact area, maximum distribution coefficient, transmission coefficient, and capacitance value. The parameter welding module is used to set the set pressure value and the set input voltage value as the process parameters of the energy storage welding equipment, and to perform energy storage welding operation on the product to be welded.

7. An electronic device, characterized in that... ,include: Memory, used to store computer programs; A processor, configured to execute the computer program to implement the method for calculating process parameters based on energy storage welding as described in any one of claims 1 to 5.

8. A readable storage medium, characterized in that... The readable storage medium stores a computer program, which, when executed by a processor, implements a method for calculating process parameters based on energy storage welding as described in any one of claims 1 to 5.

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