Method and apparatus for switching from short circuit welding to pulse welding

Abstract

The application provides a method and device for switching from short-circuit welding to pulse welding, and the method comprises the following steps: determining a detection start time and a detection end time; the detection start time is any time point for switching from short-circuit welding to pulse welding, which is determined based on a welding start time, a duty cycle of short-circuit welding or a duty cycle of pulse welding and a welding cycle; the time length between the detection start time and the detection end time is a first preset time length; performing short-circuit detection based on the detection start time and the detection end time; determining a switching time based on the detection result of the short-circuit detection; switching from short-circuit welding to pulse welding at the switching time. By the method, the short-circuit welding can be switched to pulse welding at the beginning of the arc stage with a high probability, and the occurrence of the phenomena of unsmooth droplet detachment, large droplet detachment and spatter can be greatly avoided, and the welding effect is better.

Description

Technical Field

[0001] This application relates to the field of welding technology, and in particular to a method and apparatus for switching from short-circuit welding to pulse welding. Background Technology

[0002] With the continuous development of engineering applications, the requirements for welding performance are becoming increasingly stringent. On the one hand, as welding materials become lighter and thinner, the restrictions on welding heat input are becoming increasingly stringent; on the other hand, as welding technology becomes more mature, the requirements for the aesthetic appearance of welded parts are also increasing. Given these growing demands, a welding method that switches between pulse welding and short-circuit welding, namely the MIX (hybrid) welding method, has been introduced.

[0003] Currently, MIX welding methods limit pulse welding time and short-circuit welding time using parameters such as frequency and duty cycle. For example, if the frequency of the MIX welding method is 1Hz and the duty cycle is 50%, it means switching once per second. That is, after 500ms of pulse welding, it switches to short-circuit welding, then after 500ms of short-circuit welding, it switches back to pulse welding, and so on, continuously switching between pulse welding and short-circuit welding until welding stops. During this process, it typically switches to short-circuit welding after the pulse peak (i.e., the base phase), and then switches back to pulse welding during the short-circuit arc ignition phase. Switching to short-circuit welding during the base phase generally ensures switching stability. However, when switching to pulse welding during the arc ignition phase, because the arc ignition time of short-circuit welding varies, the size of the molten ball formed at different times during the arc ignition phase varies significantly. If switching is arbitrary, it can cause uneven droplet detachment or large droplet detachment, resulting in significant welding spatter, and even set wire phenomenon, thus causing instability in the welding process and affecting welding performance and welding effect.

[0004] Therefore, in MIX welding, how to switch from short-circuit welding to pulse welding to ensure that the droplet size is appropriate and that there is no uneven droplet detachment or large droplet detachment, thereby ensuring the stability of the welding process, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] To address the challenge of switching from short-circuit welding to pulse welding in MIX welding while ensuring appropriate droplet size and preventing uneven or large droplet detachment, thus guaranteeing welding process stability, this application provides a method and apparatus for switching from short-circuit welding to pulse welding.

[0006] In a first aspect, embodiments of this application provide a method for switching from short-circuit welding to pulse welding. The method includes: determining a detection start time and a detection end time; the detection start time is any time at which the switch from short-circuit welding to pulse welding is determined based on the welding start time and a pre-set duty cycle for short-circuit welding or the duty cycle and welding period; the duration between the detection start time and the detection end time is a first preset duration; performing short-circuit detection based on the detection start time and the detection end time; determining a switching time based on the detection result of the short-circuit detection; and switching from short-circuit welding to pulse welding at the switching time.

[0007] In one possible implementation, the short-circuit detection based on the detection start time and the detection end time includes: if all welding voltage values ​​detected within a first time period are less than a first voltage threshold, then it is determined that a short circuit occurred within the time period from the detection start time to the detection end time; the first time period is located within the time period from the detection start time to the detection end time; or, if there is no first time period within the time period from the detection start time to the detection end time where all welding voltages are less than the first voltage threshold, then it is determined that no short circuit occurred within the time period from the detection start time to the detection end time.

[0008] In one possible implementation, determining the switching time based on the detection result of the short circuit detection includes: if no short circuit occurs during the time period from the detection start time to the detection end time, determining the detection end time as the switching time.

[0009] In one possible implementation, determining the switching time based on the detection result of the short circuit detection includes: if a short circuit occurs during the time period from the detection start time to the detection end time, determining the switching time based on the arcing start time after the short circuit occurs.

[0010] In one possible implementation, determining the switching time based on the arc initiation time after the short circuit occurs includes: determining the moment when the welding voltage is greater than or equal to a second voltage threshold after the short circuit occurs as the arc initiation time; and determining the moment when the duration between the arc initiation time and the arc initiation time is a second preset duration as the switching time.

[0011] In one possible implementation, the first preset duration is greater than or equal to 5 milliseconds and less than or equal to 50 milliseconds.

[0012] Secondly, embodiments of this application also provide an apparatus for switching from short-circuit welding to pulse welding. The apparatus includes: a first determining module, configured to determine a detection start time and a detection end time; the detection start time is any time at which the switch from short-circuit welding to pulse welding is determined based on the welding start time and a pre-set duty cycle for short-circuit welding or the duty cycle and welding period; the duration between the detection start time and the detection end time is a first preset duration; a detection module, configured to perform short-circuit detection based on the detection start time and the detection end time; a second determining module, configured to determine a switching time based on the detection result of the short-circuit detection; and a switching module, configured to switch from short-circuit welding to pulse welding at the switching time.

[0013] In one possible implementation, the detection module is used to perform short-circuit detection based on the detection start time and the detection end time. Specifically, the detection module is used to: determine that a short circuit occurred during the time period from the detection start time to the detection end time if all welding voltage values ​​detected within a first time period are less than a first voltage threshold; the first time period is located within the time period from the detection start time to the detection end time; or, if there is no first time period during the time period from the detection start time to the detection end time where all welding voltages are less than the first voltage threshold, determine that no short circuit occurred during the time period from the detection start time to the detection end time.

[0014] In one possible implementation, the second determining module is used to determine the switching time based on the detection result of the short circuit detection, specifically: the second determining module is used to: if no short circuit occurs during the time period from the detection start time to the detection end time, determine the detection end time as the switching time; or, if a short circuit occurs during the time period from the detection start time to the detection end time, determine the switching time based on the arcing start time after the short circuit occurs.

[0015] Thirdly, embodiments of this application also provide a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect.

[0016] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program for performing the method described in the first aspect.

[0017] This application provides a method and apparatus for switching from short-circuit welding to pulse welding. This method allows for the switching from short-circuit welding to pulse welding to begin at a time determined based on a pre-set welding cycle, the duty cycle of short-circuit welding or the duty cycle of pulse welding, and the welding start time. Within a first preset time period thereafter, short-circuit detection is performed, and based on the detection result, the switching time is determined. At the switching time, the welding switches from short-circuit welding to pulse welding.

[0018] In this way, the first preset duration can be set to a duration sufficient for short circuit detection, ensuring that a short circuit can be detected whenever it occurs. Then, at the beginning of the arc ignition phase, the short circuit welding can be switched to pulse welding, which greatly avoids the occurrence of uneven droplet detachment, large droplet detachment, and spatter, resulting in better welding effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart illustrating a method for switching from short-circuit welding to pulse welding, as provided in an embodiment of this application.

[0021] Figure 2A This is a schematic diagram of an application scenario provided by an embodiment of this application.

[0022] Figure 2B This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0023] Figure 2C This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0024] Figure 2D This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0025] Figure 3A This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0026] Figure 3B This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0027] Figure 4 This is a structural block diagram of a device for switching from short-circuit welding to pulse welding, provided in an embodiment of this application.

[0028] Figure 5This is a structural block diagram of a computer device provided in an embodiment of this application. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present application will become clearer and more apparent.

[0030] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0031] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0032] See Figure 1 , Figure 1 This is a flowchart illustrating a method for switching from short-circuit welding to pulse welding, provided in an embodiment of this application. This method can be applied to terminal devices or controllers in hybrid welding systems, where the welding process includes alternating pulse welding and short-circuit welding. The following description uses a controller in a hybrid welding system as an example to illustrate an embodiment of this application. Figure 1 As shown, the method may include the following steps:

[0033] Step S101: Determine the start time and end time of the detection.

[0034] In one possible implementation, in hybrid welding applications, periodic welding can be performed using a cyclical pattern that alternates between short-circuit welding and pulse welding. The welding cycle can be set according to the specific requirements of the application. For example, the welding cycle can be set to 1 second. Alternatively, the switching frequency corresponding to the welding cycle can be set to 1 Hz (Hertz).

[0035] For example, in a hybrid welding process, welding can begin with short-circuit welding, followed by a 500ms short-circuit welding cycle, then switching to pulse welding, then a 500ms pulse welding cycle, and so on, alternating between short-circuit welding and pulse welding. One short-circuit welding cycle can be defined by a short-circuit welding followed by an immediate pulse welding cycle. For instance, a 500ms short-circuit welding cycle followed by a 500ms pulse welding cycle can constitute one welding cycle, and one welding cycle is 1 second.

[0036] For example, in a hybrid welding process, welding can begin with pulse welding, followed by a cycle of pulse welding for 500ms, then switching to short-circuit welding, then short-circuit welding for 500ms, and then switching back to pulse welding. This cycle continues, alternating between pulse welding and short-circuit welding, for periodic welding. One pulse welding cycle can be defined by a pulse welding followed by an immediate short-circuit welding cycle. For instance, a 500ms pulse welding cycle followed by a 500ms short-circuit welding cycle can constitute one welding cycle, and one welding cycle is 1 second.

[0037] Furthermore, a short-circuit welding operation can include multiple short-circuit cycles, with each short-circuit cycle comprising a short-circuit phase and an arc-ignition phase. Similarly, a pulse welding operation can include multiple pulse cycles, with each pulse cycle comprising a peak phase and a base phase.

[0038] Optionally, in hybrid welding applications, welding parameters can be preset before welding. For example, welding parameters may include the welding cycle, the duty cycle for short-circuit welding and / or pulse welding in each welding cycle, the duration of a short-circuit cycle, the duration of a pulse cycle, and the duty cycle of the peak phase and / or base phase within a pulse cycle. It is understood that welding parameters may also include other parameters, such as initial welding voltage and initial welding current, which will not be listed here.

[0039] Since the switching from pulse welding to short-circuit welding occurs during the base value phase of pulse welding, the stability of the switching can be guaranteed. Therefore, when setting the welding parameters, the moment of switching from pulse welding to short-circuit welding should correspond to the base value phase of pulse welding.

[0040] When switching from short-circuit welding to pulse welding, switching during the arc-ignition phase of short-circuit welding can ensure stability. However, because the duration of the arc-ignition phase in short-circuit welding cannot be guaranteed to be consistent, it's impossible to guarantee that the switch will occur during the arc-ignition phase of short-circuit welding, thus compromising stability. Therefore, even when the switching time from short-circuit welding to pulse welding is determined based on a pre-set welding cycle, the duty cycle of short-circuit welding (or pulse welding), and the welding start time, the stability of the switch cannot be guaranteed.

[0041] To improve the stability of the switching process, the switching from short-circuit welding to pulse welding can be performed according to the method provided in this application. It should be noted that, since the hybrid welding process involves periodic welding following a cyclical switching pattern between short-circuit welding and pulse welding, the switching method provided in this application can be used each time the welding switches from short-circuit welding to pulse welding. In other words, the implementation method for each switch is the same. Based on this, this application uses any single switching process from short-circuit welding to pulse welding as an example to illustrate the embodiments of this application.

[0042] Based on this, in this application, the detection start time is determined as any moment of switching from short-circuit welding to pulse welding, which is determined based on a pre-set welding cycle, the duty cycle of short-circuit welding (or the duty cycle of pulse welding), and the welding start time. The detection end time is determined as the time between the detection start time and the detection start time, which is a first preset time.

[0043] The first preset duration is longer than the duration of one short-circuit cycle. The first preset duration is typically related to the preset initial welding current; the smaller the initial welding current, the larger the value of the first preset duration. Furthermore, the first preset duration is also related to factors such as the material and diameter of the welding wire. In application scenarios with different welding wire materials and / or diameters, the value of the first preset duration can vary. The value of the first preset duration can be set according to the requirements of the actual application scenario.

[0044] Optionally, the first preset duration can be greater than or equal to 5ms and less than or equal to 50ms.

[0045] Step S102: Perform short-circuit detection based on the detection start time and the detection end time.

[0046] In one possible implementation, timing can begin from the detection start time, and at each timing point, the welding voltage (or actual welding voltage) during the welding process can be detected. If all welding voltages detected within a first time period are less than a first voltage threshold, a short circuit is determined to have occurred within the time period from the detection start time to the detection end time. In other words, in this scenario, the short circuit detection result is that a short circuit occurred within the time period from the detection start time to the detection end time. The first time period is located within the time period from the detection start time to the detection end time. The duration of the first time period can be set according to the needs of the actual application scenario; for example, the duration of the first time period can be set to 1 microsecond. The first voltage threshold can also be set according to the needs of the actual application scenario. For example, the first voltage threshold can be set based on the welding voltage during the short circuit phase of short circuit welding in the actual application scenario. Alternatively,

[0047] If there is no first time interval during which all welding voltages are below the first voltage threshold between the start and end of the detection period, then it is determined that no short circuit occurred during the period from the start to the end of the detection. In other words, in this scenario, the short circuit detection result is that no short circuit occurred during the period from the start to the end of the detection.

[0048] Step S103: Determine the switching time based on the detection result of the short circuit detection.

[0049] In one possible implementation, the switching time is determined based on the short-circuit detection result, which can be achieved as follows: if no short circuit occurs during the time period from the start time of detection to the end time of detection, the end time of detection is determined as the switching time.

[0050] In one possible implementation, the switching time is determined based on the detection result of the short circuit detection, which can also be implemented as follows: if a short circuit occurs during the time period from the detection start time to the detection end time, the switching time is determined based on the arcing start time after the short circuit occurs.

[0051] In one possible implementation, the switching time is determined based on the arc initiation time after the short circuit occurs. This can be achieved as follows: the moment when the welding voltage is greater than or equal to a second voltage threshold after the short circuit occurs is determined as the arc initiation time; the moment when the duration between the arc initiation time and the arc initiation time is a second preset duration is determined as the switching time.

[0052] Both the second voltage threshold and the second preset duration can be set according to the needs of the actual application scenario. For example, the second voltage threshold can be set according to the welding voltage during the arc-ignition stage of short-circuit welding in the actual application scenario. The second preset duration can be set to 1 second, etc.

[0053] Step S104: At the switching moment, switch from short-circuit welding to pulse welding.

[0054] See Figures 2A to 2D If the method for switching from short-circuit welding to pulse welding is not followed as provided in this application, the switching may randomly occur as follows: Figures 2A to 2D The waveforms shown correspond to scene switching for one of the four waveforms. In other words, if the switching time from short-circuit welding to pulse welding is determined based on a pre-set welding cycle, the duty cycle of short-circuit welding or pulse welding, and the welding start time, the switching may randomly occur according to... Figures 2A to 2D The scene switching corresponds to one of the four waveforms shown.

[0055] in, Figure 2AThe waveform shown is from switching from short-circuit welding to pulse welding as the arcing phase is about to end. In this scenario, the duration of the arcing phase is prolonged, resulting in large molten droplets that detach.

[0056] Figure 2B The waveform shown is the result of switching from short-circuit welding to pulse welding at the very beginning of the arc-ignition phase. In this scenario, the switching is relatively stable, and the welding effect is good.

[0057] Figure 2C The waveform shown is when switching from short-circuit welding to pulse welding is in the middle of the short-circuit stage. In this scenario, spatter will occur, resulting in poor welding quality.

[0058] Figure 2D The waveform shown is from the moment the short-circuit phase ends, when switching from short-circuit welding to pulse welding. In this scenario, the amount of spatter produced is significantly reduced. Figure 2C The scene shown produces more spatter and results in a worse welding effect.

[0059] It is evident that, based on the pre-set welding cycle, the duty cycle of short-circuit welding or pulse welding, and the welding start time, the timing of switching from short-circuit welding to pulse welding will most likely result in large droplet detachment or spattering, leading to poor welding results.

[0060] See Figure 3A and Figure 3B According to the method for switching from short-circuit welding to pulse welding provided in the embodiments of this application, when switching from short-circuit welding to pulse welding, it can be done as follows: Figure 3A or Figure 3B The scene switching corresponds to one of the waveforms shown.

[0061] in, Figure 3A The waveform shown is the waveform when short-circuit welding is switched to pulse welding at a time after the arc initiation moment, where the time interval between the arc initiation moment and the arc initiation moment is the second preset duration. In this scenario, it can be ensured that short-circuit welding is switched to pulse welding at the very beginning of the arc initiation phase, resulting in better welding effect.

[0062] Figure 3B The waveform shown is the result of switching from short-circuit welding to pulse welding at the end of the detection. In this scenario, the switch from short-circuit welding to pulse welding occurs just before the arc ends, resulting in relatively poor welding quality.

[0063] However, since a first preset duration longer than one short-circuit cycle is set, which is sufficient to detect a short circuit, it can be guaranteed that as long as a short circuit occurs, it will be handled according to... Figure 3AThe corresponding scenario is switched. And after verification in actual welding scenarios, when performing mixed welding, according to the method of switching from short-circuit welding to pulse welding provided in this application, the probability of short circuit occurring within the first preset time period can reach 80% to 90%, which can greatly avoid the occurrence of large droplet shedding and spattering, resulting in better welding effect.

[0064] The method for switching from short-circuit welding to pulse welding provided in this application embodiment can start from the time of switching from short-circuit welding to pulse welding, which is determined based on a preset welding cycle, the duty cycle of short-circuit welding or the duty cycle of pulse welding and the welding start time. During the first preset time period thereafter, short-circuit detection is performed, and the switching time is determined based on the detection result of short-circuit welding. At the switching time, short-circuit welding is switched to pulse welding.

[0065] In this way, the first preset duration can be set to a duration sufficient for short circuit detection, ensuring that a short circuit can be detected whenever it occurs. Then, at the beginning of the arc ignition phase, the short circuit welding can be switched to pulse welding, which greatly avoids the occurrence of uneven droplet detachment, large droplet detachment, and spatter, resulting in better welding effect.

[0066] It is understood that the above embodiments are merely examples, and modifications can be made to the above embodiments in actual implementation. Those skilled in the art will understand that any modifications to the above embodiments that do not require creative effort fall within the protection scope of this application, and will not be described in detail in the embodiments.

[0067] Based on the same inventive concept, this application also provides an apparatus for switching from short-circuit welding to pulse welding. Since the principle of the apparatus for switching from short-circuit welding to pulse welding is similar to that of the aforementioned method for switching from short-circuit welding to pulse welding, the implementation of the apparatus for switching from short-circuit welding to pulse welding can refer to the implementation of the aforementioned method for switching from short-circuit welding to pulse welding, and the repeated parts will not be described again.

[0068] See Figure 4 , Figure 4 This is a structural block diagram of a device for switching from short-circuit welding to pulse welding, provided as an embodiment of this application. Figure 4 As shown, the device 400 for switching from short-circuit welding to pulse welding may include: a first determining module 401, a detection module 402, a second determining module 403, and a switching module 404.

[0069] in,

[0070] The first determining module 401 can be used to determine the detection start time and the detection end time; the detection start time is any time when switching from short-circuit welding to pulse welding, which is determined based on the welding start time and the pre-set duty cycle of short-circuit welding or pulse welding and the welding cycle; the duration between the detection start time and the detection end time is a first preset duration.

[0071] The detection module 402 can be used to perform short-circuit detection based on the detection start time and the detection end time.

[0072] The second determining module 403 can be used to determine the switching time based on the detection result of the short circuit detection.

[0073] The switching module 404 can be used to switch from short-circuit welding to pulse welding at the switching time.

[0074] In one possible implementation, the detection module 402 is used to perform short-circuit detection based on the detection start time and the detection end time. Specifically, the detection module 402 is used to: determine that a short circuit occurred during the time period from the detection start time to the detection end time if all welding voltage values ​​detected within a first time period are less than a first voltage threshold; the first time period is located within the time period from the detection start time to the detection end time; or, determine that no short circuit occurred during the time period from the detection start time to the detection end time if there is no first time period during which all welding voltages are less than the first voltage threshold.

[0075] In one possible implementation, the second determining module 403 is used to determine the switching time based on the detection result of the short circuit detection, specifically: the second determining module 403 is used to: if no short circuit occurs during the time period from the detection start time to the detection end time, determine the detection end time as the switching time; or, if a short circuit occurs during the time period from the detection start time to the detection end time, determine the switching time based on the arcing start time after the short circuit occurs.

[0076] In one possible implementation, the second determining module 403 is used to determine the switching time based on the arc initiation time after the short circuit occurs. Specifically, the second determining module 403 is used to: determine the moment when the welding voltage is greater than or equal to a second voltage threshold after the short circuit occurs as the arc initiation time; and determine the moment when the duration between the arc initiation time and the arc initiation time is a second preset duration as the switching time.

[0077] In one possible implementation, the first preset duration is greater than or equal to 5 milliseconds and less than or equal to 50 milliseconds.

[0078] See Figure 5 , Figure 5 This is a structural block diagram of a computer device provided in an embodiment of this application. Figure 5 As shown, the computer device 500 may include a processor 501 and a memory 502; the memory 502 may be coupled to the processor 501. It is worth noting that... Figure 5 This is an example; other types of structures can also be used to supplement or replace this structure to achieve telecommunications functions or other functions.

[0079] In one possible implementation, the function of the device 400 for switching from short-circuit welding to pulse welding can be integrated into the processor 501.

[0080] In one possible implementation, the device 400 for switching from short-circuit welding to pulse welding can be configured separately from the processor 501. For example, the device 400 for switching from short-circuit welding to pulse welding can be configured as a chip connected to the processor 501, and the switching can be achieved through the control of the processor 501.

[0081] Furthermore, in some alternative implementations, the computer device 500 may also include: a communication module, an input unit, an audio processor, a display, a power supply, etc. It is worth noting that the computer device 500 is not necessarily required to include these components. Figure 5 All components shown; in addition, computer equipment 500 may also include Figure 5 For components not shown, please refer to existing technology.

[0082] In some alternative implementations, the processor 501, sometimes also referred to as a controller or operating control, may include a microprocessor or other processor device and / or logic device, which receives input and controls the operation of various components of the computer device 500.

[0083] The memory 502 may be, for example, one or more of a cache, flash memory, hard drive, removable media, volatile memory, non-volatile memory, or other suitable devices. It may store information related to the device 400 for switching from short-circuit welding to pulse welding, and may also store a program for executing that information. The processor 501 may execute the program stored in the memory 502 to perform information storage or processing, etc.

[0084] An input unit can provide input to the processor 501. This input unit may be, for example, a keypad or touch input device. A power supply can be used to provide power to the computer device 500. A display can be used to display images and text, etc. This display may be, for example, an LCD display, but is not limited to this.

[0085] Memory 502 can be solid-state memory, such as read-only memory (ROM), random access memory (RAM), SIM card, etc. It can also be a memory that retains information even when power is off, can be selectively erased, and contains more data; examples of this type of memory are sometimes called EPROM, etc. Memory 502 can also be some other type of device. Memory 502 includes buffer memory (sometimes called a buffer). Memory 502 may include an application / function storage unit for storing application programs and function programs or processes for executing operations of computer device 500 via processor 501.

[0086] The memory 502 may also include a data storage unit for storing data, such as contacts, digital data, pictures, sounds, and / or any other data used by the electronic device. The driver storage unit of the memory 502 may include various drivers for the computer device for communication functions and / or for performing other functions of the computer device (such as messaging applications, address book applications, etc.).

[0087] The communication module is a transmitter / receiver that sends and receives signals via an antenna. The communication module (transmitter / receiver) is coupled to the processor 501 to provide input signals and receive output signals, which is the same as in a conventional mobile communication terminal.

[0088] Based on different communication technologies, multiple communication modules can be configured in the same computer device, such as cellular network modules, Bluetooth modules, and / or wireless LAN modules. The communication module (transmitter / receiver) is also coupled to a speaker and microphone via an audio processor to provide audio output through the speaker and receive audio input from the microphone, thereby enabling typical telecommunications functions. The audio processor may include any suitable buffer, decoder, amplifier, etc. Additionally, the audio processor is coupled to processor 501, enabling on-device recording via the microphone and on-device playback of stored sound via the speaker.

[0089] Embodiments of this application also provide a computer-readable storage medium capable of implementing all steps of the method for switching from short-circuit welding to pulse welding in the above embodiments. The computer-readable storage medium stores a computer program that, when executed by a processor, implements all steps of the method for switching from short-circuit welding to pulse welding in the above embodiments.

[0090] While this application provides the method operation steps as described in the embodiments or flowcharts, more or fewer operation steps may be included based on conventional or non-inventive labor. The order of steps listed in the embodiments is merely one possible execution order among many and does not represent the only execution order. In actual device or client product execution, the methods shown in the embodiments or drawings can be executed sequentially or in parallel (e.g., in a parallel processor or multi-threaded processing environment).

[0091] Those skilled in the art will understand that the embodiments of this specification can be provided as methods, apparatus (systems), or computer program products. Therefore, the embodiments of this specification can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0092] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0093] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0094] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1The steps of the function specified in one or more boxes.

[0095] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, the device and system embodiments are relatively simple in description because they are fundamentally similar to the method embodiments; relevant parts can be referred to the descriptions of the method embodiments. In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The terms "upper," "lower," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. It should be noted that, without conflict, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to any single aspect, nor to any single embodiment, nor to any combination and / or substitution of these aspects and / or embodiments. Moreover, each aspect and / or embodiment of this application can be used alone or in combination with one or more other aspects and / or embodiments.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application.

[0097] The present application has been described above with reference to preferred embodiments; however, these embodiments are merely exemplary and illustrative. Various substitutions and modifications can be made to the present application based on these embodiments, all of which fall within the protection scope of the present application.

Claims

1. A method for switching from short-circuit welding to pulse welding, characterized in that, The method includes: The detection start time and detection end time are determined; the detection start time is any moment when switching from short-circuit welding to pulse welding, which is determined based on the welding start time, the duty cycle of short-circuit welding or pulse welding, and the welding cycle; the duration between the detection start time and the detection end time is a first preset duration, wherein the first preset duration is longer than the duration of one short-circuit cycle; Short circuit detection is performed based on the detection start time and the detection end time; If no short circuit occurs during the time period from the detection start time to the detection end time, the detection end time is determined as the switching time; If a short circuit occurs during the time period from the detection start time to the detection end time, the switching time is determined based on the arc start time after the short circuit occurs; At the switching moment, the welding process switches from short-circuit welding to pulse welding.

2. The method as described in claim 1, characterized in that, The short-circuit detection based on the detection start time and the detection end time includes: If all welding voltage values ​​detected within the first time period are less than a first voltage threshold, then a short circuit is determined to have occurred within the time period from the start time of detection to the end time of detection; the first time period falls within the time period from the start time of detection to the end time of detection; or, If there is no first time period during which all welding voltages are less than the first voltage threshold during the time period from the start time of the detection to the end time of the detection, then it is determined that no short circuit occurred during the time period from the start time of the detection to the end time of the detection.

3. The method as described in claim 1, characterized in that, Determining the switching time based on the arc initiation time after the short circuit occurs includes: The moment when the welding voltage is greater than or equal to the second voltage threshold after the short circuit occurs is defined as the arc initiation moment. After determining the arc start time, the time between the arc start time and the second preset time is the switching time.

4. The method according to any one of claims 1 to 3, characterized in that, The first preset duration is greater than or equal to 5 milliseconds and less than or equal to 50 milliseconds.

5. A device for switching from short-circuit welding to pulse welding, characterized in that, The device includes: The first determining module is used to determine the detection start time and the detection end time; the detection start time is any time when switching from short-circuit welding to pulse welding, which is determined based on the welding start time, the duty cycle of short-circuit welding or pulse welding, and the welding cycle; the duration between the detection start time and the detection end time is a first preset duration, wherein the first preset duration is longer than the duration of a short-circuit cycle; The detection module is used to perform short-circuit detection based on the detection start time and the detection end time; The second determining module is used to determine the detection end time as the switching time if no short circuit occurs during the time period from the detection start time to the detection end time. If a short circuit occurs during the time period from the detection start time to the detection end time, the switching time is determined based on the arc start time after the short circuit occurs; A switching module is used to switch from short-circuit welding to pulse welding at the switching time.

6. The apparatus as claimed in claim 5, characterized in that, The detection module is used to perform short-circuit detection based on the detection start time and the detection end time, specifically: The detection module is used for: If all welding voltage values ​​detected within the first time period are less than a first voltage threshold, then a short circuit is determined to have occurred within the time period from the start time of detection to the end time of detection; the first time period falls within the time period from the start time of detection to the end time of detection; or, If there is no first time period during which all welding voltages are less than the first voltage threshold during the time period from the start time of the detection to the end time of the detection, then it is determined that no short circuit occurred during the time period from the start time of the detection to the end time of the detection.

7. A computer device, characterized in that, The method includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method of any one of claims 1 to 4.

Images