Laser welding control method, device, electronic equipment and storage medium

Abstract

The present invention relates to the field of welding technology, and specifically to a laser welding control method, device, electronic device and storage medium. The laser welding control method includes the following steps: determining the relationship between the welding parameters of laser welding and the weld overlap rate of laser welding; adjusting at least one control parameter of the welding parameters according to the relationship between the welding parameters of laser welding and the weld overlap rate of laser welding, so as to control the weld overlap rate to be within a target range. This solution adjusts at least one control parameter of the welding parameters according to the relationship between the weld overlap rate and the welding parameters, controls the weld overlap rate to be within a target range, and ensures the consistency of welding penetration. It solves the problem in the prior art that the use of the beam swing method will cause large fluctuations in the penetration of the weld at different positions, resulting in poor consistency of the penetration within the entire weld, and the possibility of cold welding in some positions, thereby affecting the stability of the product structure and posing a risk of structural failure.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and in particular to a laser welding control method, device, electronic equipment and storage medium. Background Art

[0002] Welding porosity refers to the holes formed in the weld where the gas in the welding pool does not have time to escape and remains in the weld.

[0003] To reduce weld porosity, laser welding of aluminum and copper alloys typically utilizes a beam oscillation method. Laser welding is a highly efficient and precision welding method that utilizes a high-energy-density laser beam as a heat source. Laser welding is a key application of laser material processing technology. It is primarily used for welding thin-walled materials and at low speeds. The welding process is heat-conduction-based, meaning that laser radiation heats the workpiece surface, which then diffuses inward through heat conduction. By controlling parameters such as the laser pulse width, energy, peak power, and repetition rate, the workpiece is melted, forming a specific molten pool. Due to its unique advantages, it has been successfully applied to the precision welding of micro and small parts.

[0004] However, the use of the beam swing method will cause large fluctuations in the weld penetration depth at different positions. The weld penetration depth is the distance from the weld surface to the deepest point of the melting zone in the butt weld. This leads to poor consistency in the penetration depth of the entire weld. Cold welds (too small penetration depth) may occur in some positions, which in turn affects the stability of the product structure and poses a risk of structural failure. Summary of the Invention

[0005] In response to the defects existing in the prior art, the purpose of the present invention is to provide a laser welding control method, device, electronic equipment and storage medium, which can solve the problem that the beam swing method used in the prior art will cause large fluctuations in the penetration depth of the weld at different positions, resulting in poor consistency of the penetration depth within the entire weld, and the possibility of cold welds in some positions, affecting the stability of the product structure and posing a risk of structural failure.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0007] In a first aspect, the present invention provides a laser welding control method, comprising the following steps:

[0008] Determine the relationship between laser welding parameters and laser welding spot overlap rate;

[0009] According to the relationship between the laser welding parameters and the weld overlap rate of the laser welding, at least one control parameter of the welding parameters is adjusted to control the weld overlap rate to be within a target range.

[0010] In some optional solutions, the relationship between the welding parameters and the weld overlap rate is:

[0011]

[0012]

[0013] Among them, γ is the overlap rate of weld points, v is the welding speed, the oscillation frequency f is the number of periodic oscillations completed per unit time, δ s is the swing distance, v L is the beam swing speed, a is the longitudinal swing radius, b is the lateral swing radius, a=b is circular swing, a≠b is elliptical swing, δ s =v / f, when a≥b, v L =[2πb+4(ab)]*f; when a<b, v L =[2πa+4(ba)]*f.

[0014] In some optional solutions, the target range of the weld overlap ratio is greater than 50%.

[0015] In some optional solutions, when the elliptical oscillation mode or the circular oscillation mode is adopted, adjusting at least one control parameter of the welding parameters to control the weld overlap rate to be within a target range includes:

[0016] If the control parameters of the welding parameters are welding speed, oscillation frequency and lateral oscillation radius, then the weld overlap rate is controlled to be within a target range by reducing the welding speed, increasing the lateral oscillation radius and increasing the oscillation frequency;

[0017] If the control parameters of the welding parameters are the swing pitch and the lateral swing radius, the weld overlap rate is controlled to be within the target range by increasing one or both of the lateral swing radius and decreasing the swing pitch.

[0018] In some optional solutions, when an elliptical oscillation mode is adopted and the control parameters of the welding parameters are the longitudinal oscillation radius, the lateral oscillation radius, the welding speed, and the beam oscillation speed, adjusting at least one of the control parameters of the welding parameters to control the weld overlap rate within a target range includes:

[0019] The weld overlap rate is controlled to be within a target range by reducing the longitudinal swing radius, increasing the lateral swing radius, reducing the welding speed, and increasing the beam swing speed.

[0020] In some optional solutions, when a circular oscillation method is used and the control parameters of the welding parameters are the welding speed and the beam oscillation speed, adjusting at least one of the control parameters of the welding parameters to control the weld overlap rate to be within a target range includes:

[0021] The welding spot overlap rate is controlled to be within a target range by reducing one or both of the welding speed and increasing the beam swing speed.

[0022] In some optional schemes, the adjusting of at least one control parameter among the welding parameters to control the weld overlap rate within a target range also includes: when one of the control parameters among the welding parameters changes, adjusting one or more other control parameters among the welding parameters to control the weld overlap rate within a target range.

[0023] In a second aspect, the present invention further provides a laser welding control device, comprising:

[0024] A parameter relationship determination module, which is used to determine the relationship between the laser welding parameters and the laser welding spot overlap rate;

[0025] A control module is used to adjust at least one control parameter of the welding parameters according to the relationship between the welding parameters of the laser welding and the weld overlap rate of the laser welding, so as to control the weld overlap rate to be within a target range.

[0026] In a third aspect, the present invention further provides an electronic device for executing the steps of the above-mentioned laser welding control method.

[0027] In a fourth aspect, the present invention further provides a computer storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the above-mentioned laser welding control method are implemented.

[0028] Compared with the existing technology, the advantages of the present invention are: through theoretical calculation to determine the relationship between the weld overlap rate and welding parameters, by adjusting at least one control parameter in the welding parameters, the weld overlap rate is controlled within the target range to ensure the consistency of weld penetration. This avoids the problem in the existing technology that the use of the beam swing method can cause large fluctuations in weld penetration at different locations, resulting in poor consistency of weld penetration throughout the entire weld, and the possibility of cold welds (too little penetration) in some locations, which in turn affects the stability of the product structure and poses a risk of structural failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 This is a flow chart of a laser welding control method according to an embodiment of the present invention;

[0031] Figure 2 Schematic diagram of the relationship between welding parameters and welding spot overlap rate in an embodiment of the present invention;

[0032] Figure 3 The figure is a schematic block diagram of the structure of an electronic device involved in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0035] like Figure 1 As shown, the present invention provides a laser welding control method, comprising:

[0036] S1. Determine the relationship between laser welding parameters and the laser welding spot overlap rate.

[0037] In this example, different oscillation forms have different welding parameters, and the relationship between welding parameters and weld overlap rate is different. The relationship between welding parameters and weld overlap rate of different welding forms can be obtained through theoretical deduction.

[0038] S2. According to the relationship between the laser welding parameters and the weld overlap rate of the laser welding, adjust at least one control parameter of the welding parameters to control the weld overlap rate to be within a target range.

[0039] In this scheme, the relationship between the weld overlap rate γ and the welding parameters is determined by theoretical calculation. After a lot of research, analysis and experiments, it is concluded that when the welding equipment and welding materials remain unchanged, the greater the weld overlap rate γ is, the greater the fluctuation of the penetration depth δ is. d The smaller the value, the higher the consistency of weld penetration and the higher the stability of the product structure. When the weld overlap rate is controlled within the target range, the consistency of weld penetration can be guaranteed. When designing welding parameters for laser welding, based on the relationship between the weld overlap rate γ and the welding parameters, at least one control parameter in the welding parameters is adjusted to control the weld overlap rate within the target range and ensure consistency of weld penetration.

[0040] For example, by using the beam swing method in laser welding to weld aluminum alloy and copper alloy, adjusting at least one control parameter in the welding parameters and controlling the weld overlap rate within the set target range, the welding penetration fluctuation can be kept within the set range, so that the penetration inside the entire weld has good consistency, avoiding the problem of poor welding, affecting the stability of the product structure, and possibly posing a risk of structural failure.

[0041] like Figure 2 As shown, in some optional embodiments, the relationship between the welding parameters and the weld overlap rate is:

[0042]

[0043]

[0044] Among them, γ is the overlap rate of weld points, v is the welding speed, the oscillation frequency f is the number of periodic oscillations completed per unit time, δ s is the swing distance, v L is the beam swing speed, a is the longitudinal swing radius, b is the lateral swing radius, a=b is circular swing, a≠b is elliptical swing, δ s =v / f,v L =[2πb+4(ab)]*f, a≥b; v L =[2πa+4(ba)]*f, a<b.

[0045] In this embodiment, the relationship between the weld overlap rate γ and the welding parameters is obtained through theoretical calculation, including the circular oscillation mode and the elliptical oscillation mode. When designing the welding parameters, the design can be directly based on the relationship between the above-mentioned weld overlap rate γ and the welding parameters to improve the weld overlap rate so that the weld overlap rate is within the target range to ensure the consistency of the welding penetration.

[0046] In some optional embodiments, the target range of the weld spot overlap rate is greater than 50%, which can ensure better consistency of the weld penetration depth.

[0047] In some optional embodiments, when the elliptical oscillation mode or the circular oscillation mode is adopted, adjusting at least one control parameter of the welding parameters to control the weld overlap rate to be within a target range includes:

[0048] If the control parameters of the welding parameters are welding speed, oscillation frequency and lateral oscillation radius, the weld overlap rate is controlled to be within the target range by reducing the welding speed, increasing the lateral oscillation radius and increasing the oscillation frequency or more.

[0049] If the control parameters of the welding parameters are the swing pitch and the lateral swing radius, the weld overlap rate is controlled to be within the target range by increasing one or both of the lateral swing radius and decreasing the swing pitch.

[0050] In this embodiment, when the control parameters of the welding parameters are welding speed, oscillation frequency and lateral oscillation radius: the welding spot overlap rate The weld overlap ratio is controlled within a target range by one or more of reducing the welding speed v, increasing the lateral oscillation radius b, and increasing the oscillation frequency f, thereby obtaining a weld with good penetration consistency. The term "multiple" refers to at least two options, including simultaneously reducing the welding speed v and increasing the lateral oscillation radius b, simultaneously reducing the welding speed v and increasing the oscillation frequency f, simultaneously increasing the lateral oscillation radius b and increasing the oscillation frequency f, or simultaneously reducing the welding speed v, increasing the lateral oscillation radius b, and increasing the oscillation frequency f.

[0051] When the control parameters of welding parameters are swing spacing and lateral swing radius: weld overlap rate By increasing the lateral swing radius b and reducing the swing distance δ s One or two of the above can make the weld overlap ratio γ within the target range, and obtain a weld with good penetration consistency.

[0052] When an elliptical swing mode is adopted, a≠b; when a circular swing mode is adopted, a=b, where a is the longitudinal swing radius and b is the lateral swing radius.

[0053] In some optional embodiments, when an elliptical oscillation method is adopted and the control parameters of the welding parameters are the longitudinal oscillation radius, the lateral oscillation radius, the welding speed and the beam oscillation speed, the adjustment of at least one control parameter of the welding parameters to control the weld overlap rate within the target range includes: controlling the weld overlap rate within the target range by one or more of reducing the longitudinal oscillation radius, increasing the lateral oscillation radius, reducing the welding speed and increasing the beam oscillation speed.

[0054] In this embodiment, when the longitudinal swing radius is greater than the lateral swing radius, the welding spot overlap rate is Or, when the longitudinal swing radius is smaller than the lateral swing radius, the weld overlap rate This can be achieved by reducing the longitudinal swing radius a, increasing the transverse swing radius b, reducing the welding speed v and increasing the beam swing speed v L One or more of the above can be used to make the weld overlap rate within the target range to obtain a weld with good penetration consistency.

[0055] In some optional embodiments, when a circular oscillation method is adopted and the control parameters of the welding parameters are the welding speed and the beam oscillation speed, adjusting at least one of the control parameters of the welding parameters to control the weld overlap rate within the target range includes: controlling the weld overlap rate within the target range by reducing one or both of the welding speed and increasing the beam oscillation speed.

[0056] When circular oscillation is used, the control parameters of welding parameters are welding speed and beam oscillation speed. By reducing the welding speed v and increasing the beam swing speed v L By adjusting one or both of the above, the overlap rate of weld spots can be controlled within the target range to obtain welds with better penetration consistency.

[0057] In some optional embodiments, adjusting at least one control parameter among the welding parameters to control the weld overlap rate to be within a target range also includes: when one of the control parameters among the welding parameters changes, adjusting one or more of the other control parameters among the welding parameters to make the weld overlap rate within the target range to ensure the consistency of the welding penetration.

[0058] In this embodiment, in certain scenarios, increasing the welding speed is necessary to maintain a certain welding efficiency. However, based on the relationship between welding parameters and the weld overlap ratio, a higher welding speed results in a smaller weld overlap ratio γ, which in turn prevents consistent penetration. By leveraging the relationship between the weld overlap ratio γ and the welding parameters, the weld overlap ratio can be increased by increasing the lateral oscillation radius b or the oscillation frequency f. This allows the weld overlap ratio to remain within a target range, resulting in a weld with consistent penetration. The term "multiple" refers to at least two types.

[0059] In some scenarios, to maintain a certain weld penetration, it's necessary to reduce the lateral oscillation radius b or the oscillation frequency f. However, the smaller the lateral oscillation radius b and the oscillation frequency f, the smaller the weld overlap ratio γ, which can effectively prevent consistent weld penetration. By leveraging the relationship between the weld overlap ratio γ and welding parameters, the weld overlap ratio can be increased by reducing the welding speed v, keeping it within the target range and ultimately achieving welds with consistent weld penetration.

[0060] For example, when the elliptical oscillation method is used, the control parameters of the welding parameters are welding speed, oscillation frequency and lateral oscillation radius: the weld overlap rate If the welding speed increases, the lateral swing radius and / or the swing frequency are increased; if the welding speed decreases, the lateral swing radius and / or the swing frequency are reduced; if the lateral swing radius or the swing frequency increases, the welding speed is increased; if the lateral swing radius or the swing frequency decreases, the welding speed is reduced.

[0061] For example, when the elliptical oscillation method is used, the control parameters of the welding parameters are the oscillation spacing and the lateral oscillation radius: the weld overlap rate If the swing pitch increases, the lateral swing radius increases; if the swing pitch decreases, the lateral swing radius decreases; if the lateral swing radius increases, the swing pitch increases; if the lateral swing radius decreases, the swing pitch decreases.

[0062] Several specific embodiments are given below:

[0063] When welding 4mm thick 5083 aluminum alloy sheets, the laser used was an IPG AMB4000 / 2000, with a laser power of 3800 / 1900W, a spot diameter of 420μm, a welding speed of v = 70mm / s, a defocus of 0mm, a circular beam swing with a swing radius a = 1.25mm, a swing frequency f = 100Hz, a welding length of 65mm, and frontal shielding of 99.99% high-purity nitrogen at a frontal gas flow rate of 30L / min. The calculated weld overlap ratio γ = 72%. The welding results show that the fluctuation of the penetration depth δ d =0.319mm, the stability of the penetration depth is better.

[0064] 4mm thick 5083 and 6063 aluminum alloy plates were spliced ​​and welded. The laser used was IPG AMB 4000 / 2000, with a laser power of 3200 / 1200W, a spot diameter of 400um, and a swing speed of v L =700mm / s, defocus = 0mm, beam swing is elliptical, longitudinal swing radius a = 1.2mm, lateral swing radius b = 1.6mm, swing spacing δ s =0.8mm, welding length is 65mm, 99.99% high purity nitrogen is used for front protection, and the front gas flow rate is 30L / min. The calculated weld overlap rate γ = 75%. The welding results show that the fluctuation of the penetration depth δ d =0.289mm, the stability of the penetration depth is better.

[0065] 4mm thick 5083 and 6063 aluminum alloy plates were spliced ​​and welded. The laser used was IPG AMB 4000 / 2000, with a laser power of 3200 / 1200W, a spot diameter of 400um, and a swing speed of v L = 600mm / s, defocus = 0mm, beam swing is elliptical, longitudinal swing radius a = 1.2mm, lateral swing radius b = 1.6mm, swing spacing δ s=0.7mm, welding length is 65mm, 99.99% high purity nitrogen is used for front protection, and the front gas flow rate is 30L / min. The calculated weld overlap rate γ = 78%. The welding results show that the fluctuation of the penetration depth δ d =0.163mm, the stability of the penetration depth is better.

[0066] Welding of 4mm thick 5083 aluminum alloy sheets was performed. The laser used was an IPG AMB4000 / 2000, with a laser power of 3800 / 1900W, a spot diameter of 420um, a welding speed of v = 70mm / s, a defocus amount of 0mm, a circular beam swing mode, a swing radius a = 1.25mm, a swing frequency f = 150Hz, a welding length of 65mm, and 99.99% high-purity nitrogen gas was used for front protection at a front gas flow rate of 30L / min. The calculated weld overlap ratio γ = 79%. The welding results show that the fluctuation of the penetration depth δ d =0.221mm, the stability of the penetration depth is better.

[0067] In addition, the present invention also provides a laser welding control device, comprising:

[0068] The parameter relationship determination module is used to determine the relationship between the laser welding parameters and the laser welding spot overlap rate.

[0069] A control module is used to adjust at least one control parameter of the welding parameters according to the relationship between the welding parameters of the laser welding and the weld overlap rate of the laser welding, so as to control the weld overlap rate to be within a target range.

[0070] When setting welding control parameters for laser welding, the relationship between the laser welding parameters and the weld overlap rate is utilized to adjust at least one of the welding control parameters to control the weld overlap rate within a target range, thereby ensuring consistent weld penetration. When one of the welding control parameters changes, at least one other welding control parameter is adjusted to increase the weld overlap rate, thereby controlling the weld overlap rate within the target range and ensuring consistent weld penetration.

[0071] The apparatus provided in the above embodiment can be implemented in the form of a computer program. The computer program can be used in Figure 3 Alternatively, the device can be directly applied to welding equipment to control the beam swing parameters of laser welding.

[0072] See also Figure 3 , Figure 3 This is a schematic block diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may be a terminal.

[0073] like Figure 3 As shown, the electronic device includes a processor, a memory, and a network interface connected via a system bus, wherein the memory may include a non-volatile storage medium and an internal memory.

[0074] The non-volatile storage medium can store an operating system and a computer program. The computer program includes program instructions, and when the program instructions are executed, the processor can execute any one of the laser welding control methods.

[0075] The processor is used to provide computing and control capabilities to support the operation of the entire electronic device.

[0076] The internal memory provides an environment for the operation of the computer program in the non-volatile storage medium. When the computer program is executed by the processor, the processor can execute any laser welding control method.

[0077] The network interface is used for network communication, such as sending assigned tasks, etc. Those skilled in the art will understand that Figure 3 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the electronic device to which the solution of the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0078] It should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0079] An embodiment of the present application further provides a computer storage medium, on which a computer program is stored. The computer program includes program instructions. The method implemented when the program instructions are executed can refer to the various embodiments of the present application.

[0080] The computer storage medium may be an internal storage unit of the electronic device described in the aforementioned embodiment, such as a hard disk or memory of the electronic device. The computer storage medium may also be an external storage device of the electronic device, such as a plug-in hard disk, a smart memory card (SMC), a secure digital (SD) card, a flash memory card, etc. equipped on the electronic device.

[0081] In summary, the relationship between the weld overlap rate γ and welding parameters is obtained through theoretical calculation. After a lot of research, analysis and experiments, it is concluded that when the welding equipment and welding materials remain unchanged, the greater the weld overlap rate γ is, the greater the fluctuation of the penetration depth δ is. d The smaller the value, the higher the consistency of weld penetration and the higher the stability of the product structure. When designing welding parameters for laser welding, based on the relationship between the weld overlap rate γ and the welding parameters, at least one control parameter in the welding parameters is adjusted to control the weld overlap rate within the target range to ensure the consistency of weld penetration.

[0082] When one of the control parameters in the welding parameters changes, at least one of the other control parameters in the welding parameters is adjusted to control the weld overlap rate within a target range to ensure consistent weld penetration. For example, if the welding speed needs to be increased, the weld overlap rate will decrease. By utilizing the relationship between the weld overlap rate γ and the welding parameters, the weld overlap rate can be increased by increasing the lateral swing radius b or increasing the swing frequency f, and the weld overlap rate can be controlled within the target range, thereby obtaining a weld with good weld penetration consistency. For another example, to ensure a certain weld penetration, the lateral swing radius b or the swing frequency f needs to be reduced, which will reduce the weld overlap rate. By utilizing the relationship between the weld overlap rate γ and the welding parameters, the weld overlap rate can be increased by reducing the welding speed v, and the weld overlap rate can be controlled within the target range, thereby obtaining a weld with good weld penetration consistency.

[0083] It should be noted that, in this application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0084] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A laser welding control method, characterized in that: The following steps are involved: Determine the relationship between the laser welding parameters and the laser welding spot overlap rate. The relationship between the welding parameters and the laser welding spot overlap rate is: = ,a≥b; = ,a<b; in, is the overlap rate of weld points, v is the welding speed, the oscillation frequency f is the number of periodic oscillations completed per unit time, δ s is the swing distance, v L is the beam swing speed, a is the longitudinal swing radius, b is the lateral swing radius, a=b is circular swing, a≠b is elliptical swing, δ s =v / f, when a≥b, v L =[2πb+4(ab)]*f; when a<b, v L =[2πa+4(ba)]*f, the target range of the solder joint overlap rate is greater than 50%; According to the relationship between the laser welding parameters and the weld overlap rate of the laser welding, adjusting at least one control parameter of the welding parameters to control the weld overlap rate to be within a target range; When the elliptical oscillation mode or the circular oscillation mode is adopted, adjusting at least one control parameter of the welding parameters to control the weld overlap rate to be within a target range includes: If the control parameters of the welding parameters are welding speed, oscillation frequency and lateral oscillation radius, then the weld overlap rate is controlled to be within a target range by reducing the welding speed, increasing the lateral oscillation radius and increasing the oscillation frequency; If the control parameters of the welding parameters are the swing pitch and the lateral swing radius, then the weld overlap rate is controlled to be within a target range by increasing one or both of the lateral swing radius and decreasing the swing pitch; When an elliptical oscillation mode is adopted and the control parameters of the welding parameters are a longitudinal oscillation radius, a transverse oscillation radius, a welding speed, and a beam oscillation speed, adjusting at least one of the control parameters of the welding parameters to control the weld overlap rate to be within a target range includes: Controlling the weld overlap rate within a target range by one or more of reducing a longitudinal swing radius, increasing a lateral swing radius, reducing a welding speed, and increasing a beam swing speed; When a circular oscillation method is used and the control parameters of the welding parameters are the welding speed and the beam oscillation speed, adjusting at least one of the control parameters of the welding parameters to control the weld overlap rate to be within a target range includes: The welding spot overlap rate is controlled to be within a target range by reducing one or both of the welding speed and increasing the beam swing speed.

2. The laser welding control method according to claim 1, wherein: The adjusting of at least one control parameter among the welding parameters to control the weld overlap rate to be within a target range further includes: when one of the control parameters among the welding parameters changes, adjusting one or more other control parameters among the welding parameters to control the weld overlap rate to be within a target range.

3. A laser welding control device, characterized in that: include: The parameter relationship determination module is used to determine the relationship between the laser welding parameters and the laser welding spot overlap rate. The relationship between the welding parameters and the laser welding spot overlap rate is: = ,a≥b; = ,a<b; in, is the overlap rate of weld points, v is the welding speed, the oscillation frequency f is the number of periodic oscillations completed per unit time, δ s is the swing distance, v L is the beam swing speed, a is the longitudinal swing radius, b is the lateral swing radius, a=b is circular swing, a≠b is elliptical swing, δ s =v / f, when a≥b, v L =[2πb+4(ab)]*f; when a<b, v L =[2πa+4(ba)]*f, the target range of the solder joint overlap rate is greater than 50%; a control module configured to adjust at least one control parameter of the welding parameters according to a relationship between the welding parameters of the laser welding and the weld overlap rate of the laser welding, so as to control the weld overlap rate to be within a target range; When the elliptical oscillation mode or the circular oscillation mode is adopted, adjusting at least one control parameter of the welding parameters to control the weld overlap rate to be within a target range includes: If the control parameters of the welding parameters are welding speed, oscillation frequency and lateral oscillation radius, then the weld overlap rate is controlled to be within a target range by reducing the welding speed, increasing the lateral oscillation radius and increasing the oscillation frequency; If the control parameters of the welding parameters are the swing pitch and the lateral swing radius, then the weld overlap rate is controlled to be within a target range by increasing one or both of the lateral swing radius and decreasing the swing pitch; When an elliptical oscillation mode is adopted and the control parameters of the welding parameters are a longitudinal oscillation radius, a transverse oscillation radius, a welding speed, and a beam oscillation speed, adjusting at least one of the control parameters of the welding parameters to control the weld overlap rate to be within a target range includes: Controlling the weld overlap rate within a target range by one or more of reducing a longitudinal swing radius, increasing a lateral swing radius, reducing a welding speed, and increasing a beam swing speed; When a circular oscillation method is used and the control parameters of the welding parameters are the welding speed and the beam oscillation speed, adjusting at least one of the control parameters of the welding parameters to control the weld overlap rate to be within a target range includes: The welding spot overlap rate is controlled to be within a target range by reducing one or both of the welding speed and increasing the beam swing speed.

4. An electronic device, characterized in that: Used to execute the laser welding control method according to any one of claims 1-2.

5. A computer storage medium, characterized in that The computer storage medium stores a computer program, wherein when the computer program is executed by a processor, the steps of the laser welding control method according to any one of claims 1 to 2 are implemented.

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