Multifunctional 20K high-frequency precision welding power supply control system

Abstract

The application discloses a kind of multifunctional 20K high-frequency precision welding power supply control systems, belong to welding equipment technical field;The application includes control box and power control system, the one end of control box is provided with man-machine interaction panel, the outer wall on the other end of control box is provided with multiple interfaces, load fan is embedded on the inner wall of the other end of control box;The application adopts welding frequency free switching technology, greatly improves the smoothness of welding waveform, obtains more stable welding current, while current control precision is higher, response speed is faster, can be more suitable for a variety of complex welding conditions;Through the collaborative work of voltage supervision center, carrying state analysis module and environmental supervision module, the overall monitoring and management of hot press welding machine operating state are realized, and the operating stability and reliability of the entire welding system are improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a multifunctional 20K high-frequency precision welding power supply control system. Background Technology

[0002] 20K high-frequency precision welding power supplies are commonly used in hot press welding machines and precision resistance welding equipment. During the welding of FPCs and PCBs in hot press welding machines, the 20K high-frequency precision power supply can use DC output. The welding current is pulsating DC with low ripple, and the concentrated heat can improve welding thermal efficiency and quickly reach the required welding temperature. It is particularly suitable for welding workpieces with small spacing and fast heat conduction, making the welding process more stable and significantly improving the welding quality. At the same time, the 20K high-frequency precision welding power supply has constant current control characteristics. When there are load fluctuations during the welding process of precision resistance welding equipment, it can maintain a constant output current, which can effectively prevent overheating or under-soldering of the solder joint.

[0003] In practical applications, although 20K high-frequency precision welding power supplies are widely used in hot press welding machines or precision resistance welding equipment, they still have some shortcomings in actual use: traditional load analysis methods may not be able to accurately capture subtle changes in internal pressure load, making it difficult to respond accurately and efficiently and quickly. This can easily lead to large fluctuations in the power supply due to environmental interference, causing it to continuously supply power according to the expected scheme, resulting in a gradual deterioration of the internal load state and operating environment of the power supply, which in turn affects the consistency of welding quality and the stable operation of hot press welding machines / precision resistance welding. To address the above technical shortcomings, a solution is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a multifunctional 20K high-frequency precision welding power supply control system to solve the problems mentioned above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multifunctional 20K high-frequency precision welding power supply control system, comprising a control box and a power control system, wherein a human-machine interface panel is provided at one end of the control box, a multi-terminal interface is provided on the outer wall of the other end of the control box, a load fan is embedded on the inner wall of the other end of the control box, and a buffer medium located inside the control box is provided inside the human-machine interface panel, and a voltage parameter library for the power control system is constructed.

[0006] The power control system includes a voltage monitoring center for real-time monitoring of the hot press welding machine's operating parameters. The voltage monitoring center divides the monitoring data processing within the operating cycle into internal pressure load parameters and external pressure load parameters, and communicates with the operating status analysis module and the environmental risk monitoring module.

[0007] The vehicle status analysis module combines a collection of historical archive files and a standard reference threshold D.i The system performs joint analysis with internal pressure load parameters to generate high power load alarm signals and low power load alarm signals, which are then sent to the environmental monitoring module.

[0008] The environmental monitoring module performs joint analysis on the received external pressure load parameters and coefficients constructed from historical internal and external averages and standard internal and external temperature and humidity thresholds to generate QZ data for determining the device's status. i Normal operating signals or abnormal operating signals.

[0009] Furthermore, the control box is composed of a box base and a box cover that are arranged vertically. Several sets of grilles are provided on the outer walls of both sides of the box cover, close to the human-machine interface panel. The human-machine interface panel is composed of a touch screen and a push switch. The multi-terminal interface is arranged vertically with the load fan on the end face of the box base at the other end of the control box.

[0010] Furthermore, the voltage monitoring center's monitoring process for the hot-press welding machine used for power supply is as follows:

[0011] The operation cycle is marked from the start time of the hot press welding machine to the present time. The operation cycle is divided into several cycle nodes according to the preset sampling record interval. The monitoring parameters collected at the corresponding time according to the cycle node are marked and stored in the voltage parameter library to construct a single ratio set file.

[0012] The single-component set file includes internal pressure load parameters and external pressure load parameters, and the internal pressure load parameters and external pressure load parameters are sequentially sent to the operation status analysis module and the environmental monitoring module via communication connections.

[0013] Furthermore, the analysis process of the internal pressure load parameters by the transport status analysis module is as follows:

[0014] Obtain the historical archive file set compiled from the voltage parameter library, which summarizes the parameter records of previous power control systems during operation. Retrieve the average reference negative voltage FJ obtained from the historical archive file set under normal conditions after averaging. i And the reference negative pressure peak FF that exists after averaging under abnormal conditions. i Reference negative pressure peak FF i Including the upper limit peak FF i △ and lower limit peak value The obtained internal pressure load parameter NDZ i The electrical state data DZ is obtained by splitting the data. i Summoner status data QZ i .

[0015] Furthermore, using the periodic node as the X-axis, the standard reference threshold D for power supply operation is retrieved from the voltage parameter library. iConstruct a Cartesian coordinate system with the Y-axis as the reference, and then sequentially use the average negative pressure FJ. i Reference negative pressure peak FF i DZ Electrical State Data i A floating curve is constructed by plotting points and connecting them, based on the average negative pressure FJ within the same period node. i respectively with the upper limit peak FF i △ and lower limit peak value The median between the two values ​​is used as the upper and lower bound thresholds for the fluctuation trend: when the electrical state data DZ i When the floating curve exceeds the upper limit threshold of the fluctuation trend, an electrical warning signal is generated; after the electrical warning signal is triggered, the electrical state data DZ i The floating curve exceeds the upper limit peak FF i After △, a high-load alarm signal is generated; when the electrical status data DZ i When the floating curve exceeds the lower limit threshold of the fluctuation trend, an electrical downtime warning signal is generated; after the electrical downtime warning signal is triggered, the electrical state data DZ i The floating curve exceeds the lower limit peak value Then, a low load alarm signal is generated.

[0016] Furthermore, the environmental monitoring module analyzes the external pressure load parameters as follows:

[0017] The external pressure load parameters include the internal and external ambient temperature and humidity corresponding to each set of cycle nodes within the operation cycle. The old internal and external average values ​​are retrieved from the historical archive file set, and the standard external temperature and humidity threshold and standard internal temperature and humidity threshold are retrieved from the charge parameter library. The median of the difference between the standard external temperature and humidity threshold and the standard internal temperature and humidity threshold and the old internal and external average values ​​are taken to construct the external temperature and humidity coefficient and the internal temperature and humidity coefficient.

[0018] Furthermore, when the indoor temperature and humidity are close to the standard indoor temperature and humidity thresholds, and the difference between them does not exceed the indoor temperature and humidity coefficient, and when the outdoor temperature and humidity are close to the standard outdoor temperature and humidity thresholds, and the difference between them does not exceed the indoor temperature and humidity coefficient, then the judgment device state data QZ i It is less affected by environmental disturbances and generates normal operating signals; when the internal temperature and humidity are far from the standard internal temperature and humidity thresholds, and the difference between the two exceeds the internal temperature and humidity coefficient, and the external temperature and humidity are far from the standard external temperature and humidity thresholds, and the difference between the two exceeds the external temperature and humidity coefficient, then the judgment device status data QZ i It is highly susceptible to environmental disturbances and generates abnormal operating signals.

[0019] The beneficial effects of this invention are:

[0020] 1. This invention achieves precise monitoring of electrical status data. When the electrical status data exceeds the fluctuation trend threshold, an electrical overload warning signal or an electrical underload warning signal is generated in a timely manner. When it further exceeds the upper limit peak value or the lower limit peak value, an electrical high load alarm signal or an electrical low load alarm signal is generated, thereby providing early warning and taking measures, improving load adaptability, ensuring the stable operation of the hot press welding machine, and providing precise load monitoring and early warning.

[0021] 2. This invention analyzes the internal and external ambient temperature and humidity parameters of the external pressure load to construct external and internal temperature and humidity coefficients. When the temperature and humidity are close to the standard threshold and the difference does not exceed the coefficient, the status data of the detector is less affected by environmental interference and generates a normal operation signal. When the temperature and humidity are far from the standard threshold and the difference exceeds the coefficient, the adjustment scheme in the voltage parameter library is triggered to achieve free switching of welding frequency. At the same time, the load fan adjusts its speed according to the welding frequency command to reduce the internal temperature of the control box, thereby effectively dealing with environmental interference, ensuring the stability of welding quality, and adaptively adjusting to environmental interference. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a flowchart of the system of the present invention;

[0024] Figure 2 This is a perspective view of the overall structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the control box of the present invention;

[0026] Figure 4 This is a schematic diagram of the multi-terminal interface and load fan of the present invention;

[0027] Figure 5 This is a schematic diagram of the rectangular coordinate system for the data in this invention;

[0028] Figure 6 This is a schematic diagram of the welding frequency of the present invention.

[0029] Reference numerals: 1. Control box; 2. Human-machine interface panel; 3. Load fan; 4. Multi-terminal interface. Detailed Implementation

[0030] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In existing technologies, 20K high-frequency precision welding power supplies have important applications in both hot press welding machines and precision resistance welding equipment.

[0032] Applications in hot press welding machines: Achieving efficient welding, hot press welding machines are commonly used for welding FPC (flexible printed circuit board) and PCB (rigid printed circuit board), and adopt DC output. This power supply can be used in conjunction with the temperature control system of the hot press welding machine to achieve precise temperature control through thermocouple closed-loop online feedback control.

[0033] Applications in precision resistance welding equipment: Precision resistance welding equipment applies pressure and current through electrodes and utilizes the resistance heating effect for welding; its high-frequency inverter technology shortens the welding control cycle to the millisecond level and can quickly respond to current fluctuations. The welding frequency can be infinitely variable within a certain range. Compared with low-frequency technology, it can better achieve high dynamic micro-control.

[0034] Example 1: Please refer to Figure 1 - Figure 6 As shown, this embodiment is a multifunctional 20K high-frequency precision welding power supply control system, including a control box 1 and a power control system. A human-machine interface panel 2 is provided at one end of the control box 1, and a multi-terminal interface 4 is provided on the outer wall of the other end of the control box 1. A load fan 3 is embedded in the inner wall of the other end of the control box 1. The human-machine interface panel 2 contains a buffer medium located inside the control box 1 and constructs a voltage parameter library for the power control system. The voltage parameter library represents a knowledge base constructed from the core power data. The human-machine interface panel 2 is used to make visual adjustments in conjunction with the power control system inside the control box 1. The multi-terminal interface 4 is used to connect the wiring harness in conjunction with the hot press welding machine.

[0035] The control box 1 is composed of a box base and a box cover that are arranged vertically. Several sets of grilles are installed on the outer walls of both sides of the box cover, close to the human-machine interface panel 2. The human-machine interface panel 2 consists of a touch screen and a push switch. The multi-terminal interface 4 and the load fan 3 are arranged vertically on the end face of the box base at the other end of the control box 1.

[0036] The power control system includes a voltage monitoring center for real-time monitoring and parameter acquisition of the hot press welding machine. The voltage monitoring center divides the monitoring data processing during the operation cycle into internal voltage load parameters and external voltage load parameters, and communicates with the operation status analysis module and the environmental risk monitoring module. The voltage monitoring center is represented as a module for managing the voltage parameter library. The monitoring process of the voltage monitoring center for the hot press welding machine connected to the power supply is as follows:

[0037] The operation cycle is marked from the start time of the hot press welding machine to the present time. The operation cycle is divided into several cycle nodes according to the preset sampling record interval. The monitoring parameters collected at the corresponding time according to the cycle node are marked and stored in the voltage parameter library to construct a single ratio set file. It should be noted that the single ratio set file represents the file in the voltage parameter library that represents the monitoring parameters collected during a single start of the hot press welding machine. Specifically, the file name can be based on the hot press welding machine model, number of starts, start time, and running time. It is used to distinguish and process the monitoring parameters collected from previous hot press welding machine starts and to facilitate retrieval and use in the future.

[0038] The single-comparison set file includes internal pressure load parameters and external pressure load parameters, and sequentially sends the internal pressure load parameters and external pressure load parameters to the operation status analysis module and the environmental monitoring module via communication connection. It should be noted that the internal pressure load parameters are represented by parameters such as current and voltage, and the control box 1 is used to output relevant parameter records in conjunction with the hot press welding machine; the external pressure load parameters represent the external and internal environments of the control box 1 during use, such as temperature and humidity.

[0039] The vehicle status analysis module combines a collection of historical archive files and a standard reference threshold D. i The system performs joint analysis with internal pressure load parameters to generate high electrical load alarm signals and low electrical load alarm signals, which are then sent to the environmental monitoring module. The analysis process of internal pressure load parameters by the operation status analysis module is as follows:

[0040] Obtain the historical archive file set compiled from the voltage parameter library, which summarizes the parameter records of previous power control systems during operation. Retrieve the average reference negative voltage FJ obtained from the historical archive file set under normal conditions after averaging. i And the reference negative pressure peak FF that exists after averaging under abnormal conditions. i Reference negative pressure peak FF i Including the upper limit peak FF i △ and lower limit peak value The obtained internal pressure load parameter NDZ i The electrical state data DZ is obtained by splitting the data. i Summoner status data QZi It should be noted that the normal state refers to the absence of power supply abnormalities during the operation of the control box 1 in conjunction with the hot press welding machine. The abnormal state, on the other hand, indicates a power supply problem with the hot press welding machine, specifically manifested as operational stalls, insufficient heating temperature, short circuits, welding discrepancies, etc., and is not limited to these. The specific manifestation depends on the actual operating conditions and environment of the hot press welding machine. (Upper limit peak value FF) i △ and lower limit peak value By referencing the negative pressure peak FF i The median of the differences between the preset maximum peak value and the preset minimum peak value retrieved from the voltage parameter library is used to determine the reference negative voltage peak value FF. i The range that can be adjusted up and down.

[0041] Using the periodic node as the X-axis, retrieve the standard reference threshold D for power supply operation from the voltage parameter library. i Construct a Cartesian coordinate system using the Y-axis, such as Figure 5 As shown, i represents a natural number greater than zero, such as... Figure 5 D1-D12 on the Y-axis represent the standard reference threshold D. i Different levels, in turn, refer to the average negative pressure FJ i Reference negative pressure peak FF i DZ Electrical State Data i Floating curves are constructed by drawing lines connecting points.

[0042] Based on the average negative pressure FJ within the same period node i respectively with the upper limit peak FF i △ and lower limit peak value The median between these two values ​​is used as the upper and lower bound thresholds for the volatility trend.

[0043] When the electrical state data DZ i When the floating curve exceeds the upper threshold of the fluctuation trend, an electrical warning signal is generated and sent to the voltage monitoring center. The voltage monitoring center immediately generates text and instructions in the format of "Power Supply No. #14 / Increasing Fluctuation Trend / Dispatch Maintenance / Trigger Key Parameter Local Real-Time Judgment and Handling Plan" and sends them to the smart devices of the monitoring personnel. It should be noted that "Key Parameter Local Real-Time Judgment" means that the relevant parameters for generating the electrical warning signal are summarized and gathered in the voltage parameter library inside the control box 1 currently being collected and analyzed, as well as inside the controller of the hot-press welding machine that is powered by it, so as to facilitate the response when the floating curve continues to increase and approaches the upper limit peak FF. i △ For example, within a delay of <180ms, the preset stored protection command is triggered in advance to shut down the operation of the hot press welding machine in advance, and control box 1 to supply power to the hot press welding machine, thus reducing losses;

[0044] After the electrical warning signal is triggered, the electrical status data DZ i The floating curve exceeds the upper limit peak FF i After △, a high load alarm signal is generated. Upon receiving the high load alarm signal, the voltage monitoring center immediately marks the relevant data that generated the high load alarm signal, and at the same time generates text information in the style of "Power supply serial number #14 / High load damage / Immediate repair and handling" and sends it to the smart device of the supervisor.

[0045] When the electrical state data DZ i When the floating curve exceeds the lower limit threshold of the fluctuation trend, a power failure warning signal is generated and sent to the voltage monitoring center. The voltage monitoring center immediately generates text and instructions in the style of "Power supply serial number #14 / Fluctuation trend decreases / Dispatch maintenance / Trigger key parameter local real-time judgment and processing plan" and sends them to the smart device of the supervisor.

[0046] After the electrical warning signal is triggered, the electrical status data DZ i The floating curve exceeds the lower limit peak value Afterwards, a low load alarm signal and a low load warning signal are generated. Upon receiving the low load alarm signal, the voltage monitoring center immediately marks the relevant data for generating the low load alarm signal and generates a text message in the format of "Power Supply No. #14 / Low Load Damage / Immediate Repair" and sends it to the smart device of the monitoring personnel.

[0047] Example 2: This example is a multifunctional 20K high-frequency precision welding power supply control system, including an environmental monitoring module that performs joint analysis on the received external pressure load parameters and coefficients constructed from historical internal and external averages and standard internal and external temperature and humidity thresholds to generate device status data QZ. i The analysis process of the environmental monitoring module for external pressure load parameters, whether for normal or abnormal operating signals, is as follows:

[0048] The external pressure load parameters include the internal and external ambient temperature and humidity corresponding to each cycle node within the operating cycle. The old internal and external average values ​​are retrieved from the historical archive file set, and the standard external and internal temperature and humidity thresholds are retrieved from the charge parameter library. The median of the differences between the standard external and internal temperature and humidity thresholds and the old internal and external average values ​​is used to construct the external and internal temperature and humidity coefficients. It should be noted that the old internal and external average values ​​represent the internal and external ambient temperature and humidity data collected in the historical archive file set during the use of control box 1. These values ​​are averaged based on all the internal and external ambient temperature and humidity data collected from several cycle nodes within a single operating cycle, and the average values ​​are labeled as the old internal and old external averages, respectively. The external and internal temperature and humidity coefficients are used to jointly construct the upper and lower limits of the standard external and internal temperature and humidity thresholds based on the standard external and internal temperature and humidity thresholds and the actual operating environment.

[0049] When the indoor temperature and humidity are close to the standard indoor temperature and humidity thresholds, and the difference between them does not exceed the indoor temperature and humidity coefficient, and the outdoor temperature and humidity are close to the standard outdoor temperature and humidity thresholds, and the difference between them does not exceed the indoor temperature and humidity coefficient, then the judgment device status data QZ i The voltage is less affected by environmental interference and generates a normal operating signal. After receiving the normal operating signal, the voltage monitoring center only uses it to record relevant data and store it for future reference.

[0050] When the internal ambient temperature and humidity deviate significantly from the standard internal temperature and humidity thresholds, and the difference between the two exceeds the internal temperature and humidity coefficient, and when the external ambient temperature and humidity deviate significantly from the standard external temperature and humidity thresholds, and the difference between the two exceeds the external temperature and humidity coefficient, then the judgment device status data QZ... i Due to significant environmental fluctuations and the generation of abnormal operating signals, the voltage monitoring center immediately triggers a pre-set adjustment scheme stored in the voltage parameter database upon receiving such a signal. This scheme includes welding frequency commands of 1kHz / 2kHz / 3kHz / 4kHz / 5kHz, corresponding to internal and external temperature and humidity coefficients ranging from small to large. Smaller coefficients approach the standard internal or external temperature and humidity thresholds, allowing for free switching of the welding frequency. Compared to traditional methods, this significantly improves welding smoothness, provides a more stable welding current, and offers higher current control accuracy and faster response. It is better suited to various complex welding conditions and avoids the supply pressure fluctuations caused by internal and external environmental temperatures when the control box 1 is connected to a hot press welding machine or precision resistance welding equipment. Figure 6 As shown, the load fan 3 adjusts its speed according to the welding frequency command to reduce the internal temperature of the control box 1. Figure 6 The diagram shows a comparison of welding frequencies of 1kHz and 5kHz, but it is not limited to this and is only used as an example.

[0051] Combining Embodiment 1 and Embodiment 2, the 1kHz-5kHz welding frequency free switching technology is adopted. Compared with the traditional 1kHz medium frequency, it significantly improves the smoothness of the welding waveform, obtains a more stable welding current, and has higher current control accuracy and faster response speed, making it more adaptable to various complex welding conditions. Through the collaborative work of the voltage monitoring center, the load status analysis module, and the environmental monitoring module, comprehensive monitoring and management of the hot press welding machine's operating status is realized, improving the operational stability and reliability of the entire welding system.

[0052] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0053] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A multifunctional 20K high-frequency precision welding power supply control system, comprising a control box (1) and a power supply control system, characterized in that, The control box (1) has a human-machine interaction panel (2) at one end, a multi-terminal interface (4) on the outer wall of the other end of the control box (1), a load fan (3) embedded on the inner wall of the other end of the control box (1), a buffer medium located inside the control box (1) is provided inside the human-machine interaction panel (2), and a voltage parameter library for the power control system is constructed. The power control system includes a voltage monitoring center for real-time monitoring of the hot press welding machine's operating parameters. The voltage monitoring center divides the monitoring data processing within the operating cycle into internal pressure load parameters and external pressure load parameters, and communicates with the operating status analysis module and the environmental risk monitoring module. The vehicle status analysis module combines a collection of historical archive files and standard reference thresholds. The system performs joint analysis with internal pressure load parameters to generate high power load alarm signals and low power load alarm signals, which are then sent to the environmental monitoring module. The environmental monitoring module performs joint analysis on the received external pressure load parameters and coefficients constructed from historical internal and external averages and standard internal and external temperature and humidity thresholds to generate data for determining the device's status. Normal operating signals or abnormal operating signals; The analysis process of the internal pressure load parameters by the load status analysis module is as follows: Obtain the historical archive file set compiled from the voltage parameter library, which summarizes the parameter records of previous power control systems during operation. Retrieve the average reference negative voltage value obtained from the historical archive file set under normal conditions after averaging. And the reference negative pressure peak value after averaging under abnormal conditions. Reference negative pressure peak Including upper limit peak and lower limit peak The obtained internal pressure load parameters The data is split to obtain electrical state data. Summoner status data ; Using the periodic node as the X-axis, retrieve the standard reference threshold for power supply operation from the voltage parameter library. Construct a Cartesian coordinate system with the Y-axis as the reference, and then sequentially use the average negative pressure value. Reference negative pressure peak and electrical status data A floating curve is constructed by plotting points and connecting them, based on the average negative pressure within the same period. respectively with the upper limit peak and lower limit peak The median between the two values ​​is used as the upper and lower bound thresholds for the fluctuation trend: when the electrical state data When the floating curve exceeds the upper limit threshold of the fluctuation trend, an electrical early warning signal is generated; After the electrical warning signal is triggered, the electrical status data... The floating curve exceeds the upper limit peak value Then, a high-load alarm signal is generated; When electrical state data When the floating curve exceeds the lower limit threshold of the fluctuation trend, an electrical warning signal is generated; After the electrical warning signal is triggered, the electrical status data... The floating curve exceeds the lower limit peak value Then, a low load alarm signal is generated; The environmental monitoring module analyzes the external pressure load parameters as follows: The external pressure load parameters include the internal and external environmental temperature and humidity corresponding to each set of cycle nodes within the operation cycle. The old internal and external average values ​​are retrieved from the historical archive file set, and the standard external temperature and humidity threshold and standard internal temperature and humidity threshold are retrieved from the charge parameter library. The median of the difference between the standard external temperature and humidity threshold and the standard internal temperature and humidity threshold and the old internal and external average values ​​is taken to construct the external temperature and humidity coefficient and the internal temperature and humidity coefficient. When the indoor temperature and humidity are close to the standard indoor temperature and humidity thresholds, and the difference between them does not exceed the indoor temperature and humidity coefficient, and the outdoor temperature and humidity are close to the standard outdoor temperature and humidity thresholds, and the difference between them does not exceed the indoor temperature and humidity coefficient, then the judgment device status data... It is less affected by environmental disturbances and generates normal operating signals; when the internal temperature and humidity deviate from the standard internal temperature and humidity thresholds, and the difference between the two exceeds the external temperature and humidity coefficient, and when the external temperature and humidity deviate from the standard external temperature and humidity thresholds, and the difference between the two exceeds the internal temperature and humidity coefficient, the device status data is determined. The voltage parameter library is highly susceptible to environmental interference and generates abnormal operation signals. It immediately triggers the pre-set adjustment scheme stored in the voltage parameter library. The adjustment scheme is set with 1kHz / 2kHz / 3kHz / 4kHz / 5kHz welding frequency instructions. The load fan (3) adjusts its speed according to the welding frequency instructions to reduce the internal temperature of the control box (1).

2. The multifunctional 20K high-frequency precision welding power supply control system according to claim 1, characterized in that, The control box (1) is composed of a box base and a box cover that are distributed vertically. Several sets of grilles are provided on the outer walls of both sides of the box cover, close to the human-machine interaction panel (2). The human-machine interaction panel (2) is composed of a touch screen and a push switch. The multi-terminal interface (4) and the load fan (3) are arranged vertically on the end face of the box base at the other end of the control box (1).

3. The multifunctional 20K high-frequency precision welding power supply control system according to claim 1, characterized in that, The voltage monitoring center's process for monitoring the hot-press welding machine used for power supply is as follows: The operation cycle is marked from the start time of the hot press welding machine to the present time. The operation cycle is divided into several cycle nodes according to the preset sampling record interval. The monitoring parameters collected at the corresponding time according to the cycle node are marked and stored in the voltage parameter library to construct a single ratio set file. The single-component set file includes internal pressure load parameters and external pressure load parameters, and the internal pressure load parameters and external pressure load parameters are sequentially sent to the operation status analysis module and the environmental monitoring module via communication connections.

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