Hybrid energy storage welding inverter power supply

Abstract

The invention relates to the technical field of welding equipment, in particular to a hybrid energy storage welding inverter power supply. According to the technical scheme, a power controller and a control panel are arranged at the upper end of a power supply box, and the bottom flexibly moves through a roller sliding seat and a telescopic rod pull rod; multiple modules are arranged in the power supply controller, the bidirectional inverter is connected with a power grid to coordinate energy with the energy storage module, the self-adaptive switching circuit module monitors signals to switch power supply, and the high-frequency and direct-current pulse module outputs current cooperatively. The heat dissipation module in the power supply box efficiently dissipates heat through a semiconductor chilling plate and the like. The heat dissipation module in the power supply box achieves efficient heat dissipation through a semiconductor chilling plate, a vapor chamber, cooling liquid circulation and a fan. Through full-bridge topology and pulse width modulation of the bidirectional inverter, a self-adaptive switching circuit, a high-frequency inversion module soft switch and a direct-current pulse precise control technology and an intelligent heat dissipation system, the equipment performance is comprehensively improved, welding stability is guaranteed, and different welding requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to a hybrid energy storage welding inverter power supply. Background Art

[0002] The welding power supply is a device that provides electrical energy to the welding equipment and is a vital component in the welding process. Its function is to convert the electrical energy input from the power grid into a form of electrical energy suitable for the welding process requirements and provide the necessary energy for the generation and stable combustion of the welding arc.

[0003] After searching, the patent with patent announcement number CN222403873U discloses a three-phase arc welding power supply. Although the device can protect the power supply body by setting a protective box, a heat dissipation component and a dustproof component when in use, and through a variety of heat dissipation methods, such as the cold water generated by the cold water tank flowing through the water cooling pipe to cool down the power supply body and the fan driving the cold air to further cool down the power supply body, the operation of the power supply body can be made more stable, avoiding the over-high temperature in the protective box causing the power supply body to fail, but the device lacks the intelligent switching function of the power supply mode when in use, and it is difficult to flexibly adjust the power supply mode according to the power supply situation of the power grid and the load demand. In the face of power grid fluctuations or complex load changes, it may not be able to ensure the continuous stability of the welding process; at the same time, there are deficiencies in energy storage and utilization. Without combining energy storage technology, it is impossible to reasonably utilize electricity when the power price of the power grid fluctuates, and it is impossible to continue to provide power support for welding operations in emergencies such as power outages in the power grid. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a hybrid energy storage welding inverter power supply, which solves the problems raised in the background technology.

[0005] The solution of the present invention to solve the above technical problems is as follows: A hybrid energy storage welding inverter power supply comprises a power supply box, a power supply controller is installed on the upper end of the power supply box, and a control panel is provided on the power supply controller; The power supply box is installed on the sliding seat, rollers are installed on both sides of the sliding seat, and the sliding seat moves through the rollers; and a telescopic rod is installed on the sliding seat, and a pull rod is installed on the top of the telescopic rod. An input power supply seat is provided on one side of the power supply box, and the input power supply seat is sleeved and installed on one end of the pull rod close to the sliding seat; The power controller has a built-in bidirectional inverter, an adaptive switching circuit module, a high-frequency inverter module and a DC pulse welding module. One end of the bidirectional inverter is connected to the power grid through an input power supply socket, and the other end is respectively connected to a supercapacitor module and a lithium phosphate battery module, so as to coordinate the bidirectional flow of energy in each part; the high-frequency inverter module and the DC pulse welding module are connected in series through an electrical circuit and are connected to a welding output interface together, and the two work together to provide a composite welding output, and the high-frequency inverter module and the DC pulse welding module are arranged adjacent to each other on the circuit board to reduce signal interference; The adaptive switching circuit module includes a voltage sensor, a current sensor and a single-chip microcomputer. The voltage sensor and the current sensor are installed on the connection line between the bidirectional inverter and the power grid and the energy storage output line to collect electrical signals in real time. The single-chip microcomputer is connected to the voltage and current sensors and the bidirectional inverter through a data line to receive sensor signals and control the bidirectional inverter to switch the working mode. A bidirectional smart meter is connected in series between the power grid and the bidirectional inverter through an electrical line to collect power grid electricity prices and electricity consumption data, and is connected to the single-chip microcomputer through a data line to realize data interaction. A heat dissipation module is installed inside the power supply box, and the heat dissipation module is provided with a protective shell. A supercapacitor module and a lithium phosphate battery module are respectively installed on both sides of the heat dissipation module in the power supply box. A heat spreader is embedded in the bottom end of the power supply box located at the heat dissipation module, and a first heat exchange fin is provided on the surface of one side of the heat spreader located outside the power supply box. A support foot is installed on the side of the bottom end of the power supply box away from the sliding seat; A handle is installed on the power controller, and lock buckles are provided on both sides of the power controller and the power supply box, and the power controller and the power supply box are locked and fixed by the lock buckles.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the telescopic rod can be adjusted in length, and the height of the pull rod can be adjusted according to usage requirements.

[0008] The beneficial effects of adopting the above further scheme are: The telescopic rod can adjust the height of the pull rod according to the use requirements, so that the operator can find the most comfortable operating position in different working scenarios. For example, in some places with limited space, or when facing operators of different heights, the flexibly adjustable pull rod height improves the ease of use and versatility of the equipment. Moreover, this height adjustability is related to the mobility of the equipment (rollers and sliding seats), and it can be adjusted to the appropriate height at any time during the movement process, which is convenient for operation in different terrains or usage scenarios, greatly enhancing the adaptability of the equipment, which is an advantage that many fixed-height equipment do not have.

[0009] Furthermore, the bidirectional inverter adopts a full-bridge topology structure, which has high energy conversion efficiency and stable output performance; the full-bridge topology structure of the bidirectional inverter is composed of four power switch tubes, which are connected in pairs to form bridge arms, and the power switch tubes are selected from insulated gate bipolar transistors IGBT or metal oxide semiconductor field effect transistors MOSFET; in the forward energy conversion process, that is, the inversion process from the DC side to the AC side, the DC power is converted into AC power output by controlling the two switch tubes on the diagonal line to be alternately turned on and off; for example, when one pair of switch tubes on the diagonal line is turned on, the current flows from the positive electrode of the DC power supply through the turned-on switch tube to the AC load, and then returns to the negative electrode of the DC power supply through the other pair of turned-on switch tubes, forming a complete loop, and outputting the positive half cycle of the AC voltage; in the other half cycle, By controlling the conduction of the switch tubes on the other pair of diagonals, the output of the negative half cycle of the AC voltage is realized; in the reverse energy conversion, that is, the rectification process from the AC side to the DC side, the conduction sequence of the four switch tubes is reasonably controlled according to the phase of the AC input voltage, and the AC power is converted into DC power and stored in the energy storage device; this full-bridge topology structure can fully utilize the voltage of the DC power supply in each switching cycle, which reduces energy loss and improves energy conversion efficiency compared to other topologies; at the same time, by adopting advanced pulse width modulation technology, the conduction time and frequency of the switch tube are accurately controlled, which effectively reduces the harmonic content of the output voltage and current, making the output AC power purer, ensuring stable output performance, and meeting the strict requirements of the hybrid energy storage welding inverter power supply for power conversion and output under different working conditions.

[0010] The beneficial effects of adopting the above further scheme are: The bidirectional inverter adopts a full-bridge topology structure, which consists of four power switch tubes. It can fully utilize the DC power supply voltage in each switching cycle, which greatly improves the energy conversion efficiency and reduces energy loss compared with other topologies. At the same time, combined with advanced pulse width modulation technology, the switch tube conduction time and frequency are accurately controlled, effectively reducing the harmonic content of the output voltage and current, and outputting pure AC power. This stable and efficient power conversion ensures that the hybrid energy storage welding inverter power supply can stably output power under complex welding conditions, whether facing high power demand or low power fine operation, and meet the strict requirements of the welding process for power quality and stability. The full-bridge topology structure and pulse width modulation technology complement each other, and together achieve efficient and stable power conversion, ensuring that the equipment can operate reliably under various working conditions, which is an effect that ordinary inverters are difficult to achieve at the same time.

[0011] Furthermore, the single-chip microcomputer of the adaptive switching circuit module adopts a high-performance, low-power microcontroller, which can quickly and accurately process the electrical signals collected by the sensor and control the bidirectional inverter. Specifically, when the sensor collects electrical signals such as voltage and current on the input side, these analog signals will be transmitted to the analog-to-digital conversion module built into the single-chip microcomputer for digital processing. The single-chip microcomputer analyzes the digitized signals according to a preset control algorithm to determine the current power supply status, load demand, and charge state of the energy storage device. When a grid power supply fluctuation or a load demand change is detected, the single-chip microcomputer controls the driving circuit of the bidirectional inverter to adjust the switching frequency and duty cycle of the bidirectional inverter, thereby realizing the charging and discharging control of the energy storage device and smooth switching between grid power supply and energy storage power supply, thereby ensuring stable and reliable operation of the welding inverter power supply.

[0012] The beneficial effects of adopting the above further scheme are: The adaptive switching circuit module uses a high-performance, low-power single-chip microcomputer that can quickly and accurately process the electrical signals collected by the sensor. When the power supply of the power grid fluctuates or the load demand changes, the single-chip microcomputer can analyze the signal according to the preset algorithm, and adjust the switching frequency and duty cycle by controlling the driving circuit of the bidirectional inverter to achieve the charge and discharge control of the energy storage device and the smooth switching of the power supply between the power grid and the energy storage. The single-chip microcomputer works closely with the voltage and current sensors to monitor the power supply status in real time. Its processing speed and control accuracy ensure that the welding inverter power supply can operate stably and reliably under different power supply conditions, avoiding welding interruptions or quality degradation due to power supply problems, ensuring the continuity and stability of welding work, and providing reliable power supply guarantee for welding operations.

[0013] Furthermore, the high-frequency inverter module adopts soft switching technology to reduce switching losses and improve inverter efficiency. Specifically, the high-frequency inverter module forms a resonant circuit by adding a resonant inductor and a resonant capacitor in the main circuit. In the process of switching on and off the switch tube, the resonance phenomenon generated by the resonant circuit is used to make the voltage across the switch tube or the current flowing through the switch tube approach zero at the moment of switching action. For example, in the zero voltage switching mode, before the switch tube is turned on, the voltage across the switch tube is reduced to zero through the resonant circuit. At this time, the switch tube is turned on to avoid the conduction loss caused by the existence of voltage. In the zero current switching mode, before the switch tube is turned off, the current flowing through the switch tube is reduced to zero by resonance, thereby eliminating the current tailing phenomenon during shutdown and reducing the shutdown loss. At the same time, the soft switching technology increases the switching frequency. Under the same power output, the volume and weight of the filter element are reduced, the harmonic content in the circuit is reduced, and the power quality is improved. Under the comprehensive effect, the inverter efficiency is significantly improved, and the efficient and stable operation of the hybrid energy storage welding inverter power supply is guaranteed.

[0014] The beneficial effects of adopting the above further scheme are: The high-frequency inverter module forms a resonant circuit by adding a resonant inductor and a resonant capacitor, and uses the resonance phenomenon to achieve soft switching, so that the voltage or current approaches zero at the moment of the switch tube turning on and off, reducing switching losses and improving inverter efficiency. At the same time, the soft switching technology increases the switching frequency, so that the volume and weight of the filter components can be reduced under the same power output, and the harmonic content in the circuit is reduced, and the power quality is improved. This technology not only improves the inverter efficiency and ensures the efficient and stable operation of the hybrid energy storage welding inverter power supply, but also reduces the size of the equipment, reduces the weight, and facilitates the handling and installation of the equipment. It optimizes the physical characteristics of the equipment while improving performance, and realizes the combination of multiple advantages.

[0015] Furthermore, the DC pulse welding module can accurately control the frequency, width and amplitude of the pulse to meet the requirements of different welding processes; the DC pulse welding module has a built-in high-performance digital signal processor as the control core; in terms of controlling the pulse frequency, the DSP generates a precise clock signal through an internal timer based on the preset welding process parameters to determine the pulse repetition period, thereby achieving precise adjustment of the pulse frequency, and can be flexibly switched within a wider frequency range, such as 10Hz-1000Hz, to meet the requirements of high-frequency pulses for thin plate welding and low-frequency pulses for thick plate welding; when controlling the pulse width, the DSP uses pulse width modulation technology to change the PW according to the requirements of droplet transition, weld formation, etc. in the welding process. The duty cycle of the M signal can accurately control the on-time of the pulse, and the pulse width can be finely adjusted within the microsecond range, such as 10μs-1000μs, to ensure accurate control of energy input during welding. For the control of pulse amplitude, the DC pulse welding module is equipped with a high-performance power amplifier and a closed-loop feedback circuit. The DSP outputs the corresponding control signal to the power amplifier according to the requirements of different welding materials and welding positions for current amplitude, adjusts its amplification factor, and thus changes the pulse output amplitude. At the same time, the output current signal is collected in real time through the sampling resistor and fed back to the DSP for comparative analysis. If there is a deviation between the actual amplitude and the set value, the DSP immediately adjusts the control signal to ensure that the pulse amplitude is always stable within the set range, effectively improving the welding quality and adaptability.

[0016] The beneficial effects of adopting the above further scheme are: The DC pulse welding module has a built-in high-performance digital signal processor (DSP), which can accurately control the frequency, width and amplitude of the pulse. When controlling the frequency, the DSP generates a precise clock signal to adjust the frequency according to the preset welding process parameters, and can be flexibly switched in the range of 10Hz-1000Hz to meet the welding requirements of different plate thicknesses. When controlling the pulse width, the pulse width modulation technology is used to adjust the conduction time according to the welding process requirements, and fine control is performed in the range of 10μs-1000μs. When controlling the amplitude, the power amplifier and closed-loop feedback circuit are used to adjust the amplitude according to different welding materials and position requirements and feedback adjustment in real time. These precise control functions cooperate with each other, making the energy input in the welding process precisely controllable, greatly improving the welding quality and adaptability, being able to cope with various complex welding tasks, and achieving a high degree of adaptability to different welding processes, which is a precise control effect that is difficult to achieve with traditional welding modules.

[0017] Furthermore, the lithium phosphate battery module is provided with an outer shell, in which a battery cell is installed through a sealed shell, and a cavity is provided between the sealed shell and the outer shell, and the cavity between the sealed shell and the outer shell is connected to the water tank through a connecting pipe, and a wiring electrode is provided at the top of the outer shell; the sealed shell is made of insulating and heat-insulating materials to prevent electrical interference and heat transfer between the battery cell and the outer shell.

[0018] The beneficial effects of adopting the above further scheme are: The sealed shell of the lithium phosphate battery module is made of insulating and heat-insulating materials to prevent electrical interference and heat transfer between the battery cell and the shell. The prevention of electrical interference ensures the stable operation of the battery cell and avoids the impact of external electrical factors on battery performance; the heat insulation effect effectively prevents the heat generated by the battery during operation from being transferred outward, reduces the thermal impact on other surrounding components, and improves the stability and service life of the battery module itself. At the same time, the cavity between the sealed shell and the shell is connected to the water tank through a connecting pipe, laying the foundation for the subsequent heat dissipation cycle. This design not only ensures the stability of the battery module, but also connects with the overall heat dissipation system, achieving functional synergy and complementarity.

[0019] Furthermore, a semiconductor refrigeration plate is installed on the upper surface of the heat spreader in the protective shell, the hot end of the semiconductor refrigeration plate is in contact with the heat spreader, and the cold end of the semiconductor refrigeration plate is in contact with the water tank. A heat exchange tube is installed above the water tank, and a second heat exchange fin is installed on the outside of the heat exchange tube. A fan is installed behind the heat exchange tube to drive the low-temperature airflow to cool the supercapacitor module. One end of the heat exchange tube is connected to the water tank through a connecting tube, and the other end of the heat exchange tube is connected to the cavity between the outer shell and the battery cell through the connecting tube.

[0020] The beneficial effects of adopting the above further scheme are: The hot end of the semiconductor refrigeration plate is in contact with the heat spreader, and the cold end is in contact with the water tank. The heat exchange tube above the water tank, the second heat exchange fin and the fan together constitute a heat dissipation system. The fan drives the low-temperature airflow to cool the supercapacitor module. One end of the heat exchange tube is connected to the water tank, and the other end is connected to the cavity of the lithium phosphate battery module, forming a complete heat dissipation cycle. This structural design makes full use of the cooling effect of the semiconductor refrigeration plate, transfers heat evenly through the heat spreader, and then uses the coolant circulation in the water tank and the heat exchange tube and the forced convection of the fan to achieve efficient heat dissipation of key components such as the supercapacitor module and the lithium phosphate battery module, ensuring that these components work at a suitable temperature, improving the stability and reliability of the entire power system, and ensuring the long-term stable operation of the equipment.

[0021] Furthermore, the water tank has a built-in circulation pump and is filled with cooling medium, which circulates in the water tank, the heat exchange tube and the cavity between the sealing shell and the outer shell through the circulation pump; the cooling medium is a coolant with good heat dissipation performance and chemical stability.

[0022] The beneficial effects of adopting the above further scheme are: The water tank is equipped with a built-in circulation pump, which is filled with coolant with good heat dissipation performance and chemical stability. The coolant circulates in the water tank, heat exchange tubes and battery module cavity through the circulation pump, continuously taking away heat. Good heat dissipation performance ensures efficient heat dissipation, and chemical stability ensures that the coolant will not deteriorate or corrode the equipment during long-term circulation, thereby extending the service life of the equipment. This circulation heat dissipation method cooperates with components such as semiconductor refrigeration plates, heat spreaders, heat exchange tubes and fans to form an efficient and stable heat dissipation system, which provides reliable heat dissipation guarantee for the hybrid energy storage welding inverter power supply, allowing the equipment to maintain normal operating temperature even under long-term and high-load working conditions.

[0023] Furthermore, the cooling power of the semiconductor refrigeration plate can be adaptively adjusted according to the temperature in the power supply box; specifically, a plurality of high-precision temperature sensors are evenly distributed in the power supply box to collect temperature data at different positions in the box in real time; these temperature sensors transmit the collected analog temperature signals to the signal conditioning circuit connected thereto, filter, amplify and other pre-processing are performed on the signals, and then send them to the microcontroller; the microcontroller pre-stores a temperature-power adjustment algorithm formulated according to the normal working temperature range of the electronic components in the power supply box; after receiving the processed temperature signal, the microcontroller performs calculation analysis based on the algorithm to determine the current temperature condition in the power supply box; if the temperature is higher than the set upper threshold value, the microcontroller outputs a control signal to the drive circuit of the semiconductor refrigeration plate, and increases the working current of the semiconductor refrigeration plate by adjusting the pulse width modulation signal of the drive circuit, thereby improving its cooling power; conversely, if the temperature is lower than the set lower threshold value, the microcontroller reduces the working current of the semiconductor refrigeration plate through the drive circuit, reducing the cooling power, thereby ensuring that the power supply box is always maintained in a suitable working temperature range and ensuring the stable operation of the hybrid energy storage welding inverter power supply.

[0024] The beneficial effects of adopting the above further scheme are: Multiple high-precision temperature sensors are evenly distributed in the power supply box to collect temperature data in real time, which is sent to the microcontroller after preprocessing by the signal conditioning circuit. The microcontroller adjusts the cooling power of the semiconductor refrigeration chip according to the temperature conditions based on the preset temperature-power adjustment algorithm. When the temperature is higher than the upper threshold, the cooling power is increased, and when it is lower than the lower threshold, the cooling power is reduced. This adaptive adjustment mechanism ensures that the power supply box is always maintained in a suitable operating temperature range, avoiding over-cooling or insufficient cooling, ensuring stable operation of the equipment and saving energy. The layout of multiple temperature sensors ensures comprehensive monitoring of the temperature in the power supply box, and forms an intelligent and efficient temperature control system with the control and adjustment of the microcontroller and the semiconductor refrigeration chip. Compared with the traditional fixed cooling power heat dissipation method, it can better adapt to different working environments and load changes, providing a more reliable guarantee for the stable operation of the equipment.

[0025] The present invention provides a hybrid energy storage welding inverter power supply. It has the following beneficial effects: The power supply box is installed on a sliding seat with rollers, which can be easily moved and used flexibly in different work sites. The telescopic rod on the sliding seat can be adjusted in length. The height of the pull rod can be adjusted according to the height of the operator, operating habits or different work scene requirements to improve the convenience and comfort of operation. The power controller and the power supply box are locked and fixed by a lock, which is easy to install and disassemble, and is convenient for assembly, maintenance and transportation of the equipment. There is a handle on the power controller to facilitate the handling and movement of the power controller.

[0026] The bidirectional inverter adopts a full-bridge topology to reduce energy loss and improve conversion efficiency. It can also reduce harmonic content through pulse width modulation technology, output purer AC power, and ensure stable output under different working conditions. The bidirectional inverter can coordinate the bidirectional flow of energy between the power grid, supercapacitor module and lithium phosphate battery module to achieve "peak shaving and valley filling", charging when the electricity price is low and discharging at peak times, saving costs and reducing grid pressure. The high-frequency inverter module adopts soft switching technology to achieve zero voltage or zero current switching through a resonant circuit, reduce switching losses, improve inverter efficiency, reduce the volume and weight of filter components, reduce harmonic content, and improve power quality. The DC pulse welding module can accurately control the frequency, width and amplitude of the pulse, and can be flexibly adjusted within a wide frequency range and microsecond pulse width range to meet the needs of different welding processes and improve welding quality and adaptability.

[0027] The adaptive switching circuit module can monitor electrical signals in real time, and automatically control the charging and discharging of the bidirectional inverter and the smooth switching between the grid and the energy storage power supply according to the fluctuation of the grid power supply, the load demand and the charge state of the energy storage device, so as to ensure the stable operation of the welding inverter power supply. The cooling power of the semiconductor refrigeration plate in the heat dissipation module can be adaptively adjusted according to the temperature in the power supply box. Through the cooperation of the temperature sensor, the signal conditioning circuit and the microcontroller, it is ensured that the power supply box is always maintained in a suitable operating temperature range to ensure the stable operation of the equipment. The sealed shell of the lithium phosphate battery module is made of insulating and heat-insulating materials to prevent electrical interference and heat transfer. The cooling medium circulates in the water tank, and with the help of fans and heat exchange fins, it can effectively cool down the supercapacitor module and lithium phosphate battery module, etc., to ensure the performance and life of each component. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0029] In the attached picture: Figure 1 This is a schematic diagram of the main appearance of the present invention; Figure 2 It is a rear view schematic diagram of the present invention; Figure 3 This is a schematic diagram of the appearance of the power supply box of the present invention; Figure 4 This is a schematic diagram of the appearance of the heat dissipation module of the present invention; Figure 5 It is a schematic diagram of the internal structure of the heat dissipation module of the present invention; Figure 6 This is a schematic diagram of the structure of the heat spreader of the present invention when viewed from bottom up; Figure 7 It is a schematic diagram of the appearance of the lithium phosphate battery module of the present invention.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Pull rod; 10. Super capacitor module; 11. Heat dissipation module; 1101. Protective shell; 1102. Heat exchange tube; 1103. Second heat exchange fin; 1104. Semiconductor refrigeration plate; 1105. Heat spreader; 1106. Water tank; 1107. Fan; 1108. Connecting pipe; 12. Lithium phosphate battery module; 1201. Wiring electrode; 1202. Shell; 2. Telescopic rod; 3. Handle; 4. Power controller; 401. Control panel; 5. Power supply box; 501. First heat exchange fin; 502. Support foot; 6. Roller; 7. Lock; 8. Sliding seat; 9. Input power supply seat. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 7 As shown, the embodiments provided by the present invention are: Embodiment 1 A hybrid energy storage welding inverter power supply includes a power supply box 5, a power supply controller 4 is installed on the upper end of the power supply box 5, a control panel 401 is provided on the power supply controller 4, the power supply box 5 is installed on a sliding seat 8, rollers 6 are installed on both sides of the sliding seat 8, and the sliding seat 8 moves through the rollers 6; and a telescopic rod 2 is installed on the sliding seat 8, the telescopic rod 2 can adjust the length, and the height of the pull rod 1 can be adjusted according to the use requirements, and the telescopic rod 2 can adjust the height of the pull rod 1 according to the use requirements, so that the operator can find the most comfortable operating position in different working scenes. For example, in some places with limited space, or when facing operators of different heights, the flexibly adjustable height of the pull rod 1 improves the ease of use and versatility of the equipment. Moreover, this height adjustability is associated with the mobility of the device (roller 6 and sliding seat 8), and the device can be adjusted to a suitable height at any time during movement, which is convenient for operation in different terrains or usage scenarios, greatly enhancing the adaptability of the device, which is an advantage that many fixed-height devices do not have. A pull rod 1 is installed at the top of the telescopic rod 2, and an input power supply seat 9 is provided on one side of the power supply box 5, and the input power supply seat 9 is sleeved and installed on one end of the pull rod 1 close to the sliding seat 8; The power controller 4 has a built-in bidirectional inverter, an adaptive switching circuit module, a high-frequency inverter module and a DC pulse welding module. The bidirectional inverter adopts a full-bridge topology structure, and has high energy conversion efficiency and stable output performance. The full-bridge topology structure of the bidirectional inverter is composed of four power switch tubes, which are connected to form bridge arms in pairs. The power switch tubes are selected from insulated gate bipolar transistors IGBT or metal oxide semiconductor field effect transistors MOSFET. In the forward energy conversion process, that is, the inversion process from the DC side to the AC side, the DC power is converted into AC power output by controlling the two switch tubes on the diagonal line to be alternately turned on and off; for example, when the switch tubes on one pair of diagonals are turned on, the current flows from the positive electrode of the DC power supply through the turned-on switch tubes to the AC load, and then returns to the negative electrode of the DC power supply through the other pair of turned-on switch tubes, forming a complete loop, and outputting the positive half cycle of the AC voltage; in the other half cycle, by controlling the switch tubes on the other pair of diagonals to be turned on, the AC voltage is output. Output of the negative half cycle of the AC voltage; in the reverse energy conversion, that is, the rectification process from the AC side to the DC side, the conduction sequence of the four switch tubes is reasonably controlled according to the phase of the AC input voltage, and the AC power is converted into DC power and stored in the energy storage device; this full-bridge topology structure can fully utilize the voltage of the DC power supply in each switching cycle, which reduces energy loss and improves energy conversion efficiency compared with other topologies; at the same time, by adopting advanced pulse width modulation technology, the conduction time and frequency of the switch tube are accurately controlled, and the harmonic content of the output voltage and current is effectively reduced, making the output AC power purer, ensuring stable output performance, and meeting the strict requirements of hybrid energy storage welding inverter power supply for power conversion and output under different working conditions. The bidirectional inverter adopts a full-bridge topology structure, which consists of four power switch tubes, and can fully utilize the DC power supply voltage in each switching cycle, which greatly improves the energy conversion efficiency and reduces energy loss compared with other topologies. At the same time, combined with advanced pulse width modulation technology, the conduction time and frequency of the switch tube are accurately controlled, effectively reducing the harmonic content of the output voltage and current, and outputting pure AC power. This stable and efficient power conversion ensures that the hybrid energy storage welding inverter power supply can stably output power under complex welding conditions, whether facing high power demand or small power precision operation, and meet the strict requirements of the welding process for power quality and stability.The full-bridge topology and pulse width modulation technology complement each other and jointly realize efficient and stable power conversion, ensuring the reliable operation of the equipment under various working conditions. This is an effect that is difficult to achieve simultaneously with ordinary inverters. One end of the bidirectional inverter is connected to the power grid through the input power supply socket 9, and the other end is respectively connected to the supercapacitor module 10 and the lithium phosphate battery module 12, which are used to coordinate the bidirectional flow of energy in each part; the high-frequency inverter module adopts soft switching technology to reduce switching losses and improve inverter efficiency; specifically, the high-frequency inverter module forms a resonant circuit by adding a resonant inductor and a resonant capacitor to the main circuit; in the process of the switch tube being turned on and off, the resonance phenomenon generated by the resonant circuit is used to make the voltage at both ends of the switch tube or the current flowing through the switch tube approach zero at the moment of the switch action; for example, in the zero voltage switching mode, before the switch tube is turned on, the resonant The oscillation circuit makes the voltage drop across the switch tube to zero. At this time, the switch tube is turned on to avoid the conduction loss caused by the existence of voltage. In the zero current switching mode, before the switch tube is turned off, the current flowing through the switch tube is reduced to zero by resonance, thereby eliminating the current tailing phenomenon during shutdown and reducing the shutdown loss. At the same time, the soft switching technology increases the switching frequency, reduces the volume and weight of the filter components under the same power output, reduces the harmonic content in the circuit, and improves the power quality. Under the comprehensive effect, the inverter efficiency is significantly improved, and the efficient and stable operation of the hybrid energy storage welding inverter power supply is guaranteed. The high-frequency inverter module forms a resonant circuit by adding a resonant inductor and a resonant capacitor, and uses the resonance phenomenon to realize soft switching. At the moment of the switch tube being turned on and off, the voltage or current is close to zero, which reduces the switching loss and improves the inverter efficiency. At the same time, the soft switching technology increases the switching frequency, so that under the same power output, the volume and weight of the filter components can be reduced, the harmonic content in the circuit is reduced, and the power quality is improved.This technology not only improves the inverter efficiency and ensures the efficient and stable operation of the hybrid energy storage welding inverter power supply, but also reduces the size of the equipment, reduces the weight, facilitates the handling and installation of the equipment, optimizes the physical characteristics of the equipment while improving the performance, and realizes the combination of multiple advantages. The high-frequency inverter module and the DC pulse welding module are connected in series through electrical circuits and connected to the welding output interface. The two work together to provide composite welding output, and the high-frequency inverter module and the DC pulse welding module are arranged adjacent to each other on the circuit board to reduce signal interference. The DC pulse welding module can accurately control the frequency, width and amplitude of the pulse to meet different welding process requirements; the DC pulse welding module has a built-in high-performance digital signal processor as the control core; in terms of controlling the pulse frequency, the DSP generates a precise clock signal through the internal timer according to the preset welding process parameters to determine the pulse repetition period, thereby realizing the precise adjustment of the pulse frequency, which can be flexibly switched within a wider frequency range, such as 10Hz-1000Hz, to meet the needs of high-frequency pulses such as thin plate welding. , and the requirements of thick plate welding for low-frequency pulses; when controlling the pulse width, DSP uses pulse width modulation technology to accurately control the pulse conduction time by changing the duty cycle of the PWM signal according to the requirements of the welding process for droplet transition and weld formation. The pulse width can be finely adjusted within the microsecond range, such as 10μs-1000μs, to ensure accurate control of energy input during welding; for the control of pulse amplitude, the DC pulse welding module is equipped with a high-performance power amplifier and a closed-loop feedback circuit; DSP outputs the corresponding control signal to the power amplifier according to the requirements of different welding materials and welding positions for current amplitude, adjusts its amplification factor, and thus changes the pulse output amplitude; at the same time, the output current signal is collected in real time through the sampling resistor and fed back to the DSP for comparative analysis. If there is a deviation between the actual amplitude and the set value, the DSP immediately adjusts the control signal to ensure that the pulse amplitude is always stable within the set range, effectively improving the welding quality and adaptability. The DC pulse welding module has a built-in high-performance digital signal processor (DSP) that can accurately control the frequency, width and amplitude of the pulse. When controlling the frequency, the DSP generates a precise clock signal to adjust the frequency according to the preset welding process parameters, and can be flexibly switched in the range of 10Hz - 1000Hz to meet the welding requirements of different plate thicknesses. When controlling the pulse width, the pulse width modulation technology is used to adjust the on-time according to the welding process requirements, and fine control is performed in the range of 10μs - 1000μs. When controlling the amplitude, the power amplifier and closed-loop feedback circuit are used to adjust the amplitude according to different welding materials and position requirements and provide real-time feedback adjustments. These precise control functions work together to make the energy input during the welding process precisely controllable, greatly improving the welding quality and adaptability, being able to cope with various complex welding tasks, and achieving a high degree of adaptability to different welding processes, which is a precise control effect that is difficult to achieve with traditional welding modules.

[0033] Embodiment 2 In order to ensure stable and reliable operation of the welding inverter power supply, for example, Figures 1 to 7 As shown, the present invention also includes: The adaptive switching circuit module includes a voltage sensor, a current sensor and a single-chip microcomputer. The single-chip microcomputer of the adaptive switching circuit module adopts a high-performance, low-power microcontroller, which can quickly and accurately process the electrical signals collected by the sensor and control the bidirectional inverter. Specifically, when the sensor collects electrical signals such as voltage and current on the input side, these analog signals will be transmitted to the analog-to-digital conversion module built into the single-chip microcomputer for digital processing. The single-chip microcomputer analyzes the digitized signal according to a preset control algorithm to determine the current power supply status, load demand, and charge state of the energy storage device. When a grid power supply fluctuation or a load demand change is detected, the single-chip microcomputer controls the driving circuit of the bidirectional inverter and adjusts the switching frequency and duty cycle of the bidirectional inverter, thereby realizing the charging and discharging control of the energy storage device, as well as smooth switching between grid power supply and energy storage power supply, to ensure stable and reliable operation of the welding inverter power supply. The adaptive switching circuit module adopts a high-performance, low-power single-chip microcomputer, which can quickly and accurately process the electrical signals collected by the sensor. When the power supply of the power grid fluctuates or the load demand changes, the single-chip microcomputer can analyze the signal according to the preset algorithm, and adjust the switching frequency and duty cycle by controlling the driving circuit of the bidirectional inverter, so as to realize the charge and discharge control of the energy storage device and the smooth switching of the power supply between the power grid and the energy storage. The single-chip microcomputer works closely with the voltage and current sensors to monitor the power supply status in real time. Its processing speed and control accuracy ensure that the welding inverter power supply can operate stably and reliably under different power supply conditions, avoid welding interruption or quality degradation due to power supply problems, ensure the continuity and stability of welding work, and provide reliable power supply guarantee for welding operations. The voltage sensor and the current sensor are installed on the connection line between the bidirectional inverter and the power grid and the energy storage output line to collect electrical signals in real time; the single-chip microcomputer is connected to the voltage, current sensor and the bidirectional inverter through the data line, receives the sensor signal and controls the bidirectional inverter to switch the working mode; a bidirectional smart meter is connected in series between the power grid and the bidirectional inverter through the electrical line, which is used to collect the power grid electricity price and electricity consumption data, and is connected to the single-chip microcomputer through the data line to realize data interaction.

[0034] Embodiment 3 In order to cool down the inside of the power supply box 5, for example, Figures 1 to 7As shown, the present invention also includes: a heat dissipation module 11 is installed inside the power supply box 5, and the heat dissipation module 11 is provided with a protective shell 1101, and a super capacitor module 10 and a lithium phosphate battery module 12 are respectively installed on both sides of the heat dissipation module 11 in the power supply box 5, and the lithium phosphate battery module 12 is provided with an outer shell 1202, and a battery cell is installed in the outer shell 1202 through a sealed shell, and a cavity is provided between the sealed shell and the outer shell 1202, and the cavity between the sealed shell and the outer shell 1202 is connected with the water tank 1106 through a connecting pipe 1108, and a wiring electrode 1201 is provided on the top of the outer shell 1202; the sealed shell is made of insulating and heat-insulating materials to prevent electrical interference and heat transfer between the battery cell and the outer shell 1202, and the sealed shell of the lithium phosphate battery module 12 is made of insulating and heat-insulating materials to prevent electrical interference and heat transfer between the battery cell and the outer shell 1202. The prevention of electrical interference ensures the stable operation of the battery cells and avoids the impact of external electrical factors on battery performance; the thermal insulation effect effectively prevents the heat generated by the battery during operation from being transferred outward, reduces the thermal impact on other surrounding components, and improves the stability and service life of the battery module itself.At the same time, the cavity between the sealing shell and the outer shell 1202 is connected to the water tank 1106 through the connecting pipe 1108, which lays the foundation for the subsequent heat dissipation cycle. This design not only ensures the stability of the battery module, but also connects with the overall heat dissipation system to achieve functional synergy and complementarity. The power supply box 5 is located at the bottom of the heat dissipation module 11 and is inlaid with a heat spreader 1105. The heat spreader 1105 is located on the side surface of the outer side of the power supply box 5. A first heat exchange fin 501 is provided. A semiconductor refrigeration plate 1104 is installed on the upper surface of the heat spreader 1105 in the protective shell 1101. The cooling power of the semiconductor refrigeration plate 1104 can be adaptively adjusted according to the temperature in the power supply box 5; specifically, a plurality of high-precision temperature sensors are evenly distributed in the power supply box 5 to collect temperature data at different positions in the box in real time; these temperature sensors transmit the collected analog temperature signals to the signal conditioning circuit connected thereto, perform pre-processing such as filtering and amplification on the signals, and then send them to the microcontroller The microcontroller has a temperature-power adjustment algorithm pre-stored in the microcontroller according to the normal working temperature range of the electronic components in the power supply box 5; after receiving the processed temperature signal, the microcontroller performs calculation analysis according to the algorithm to determine the current temperature condition in the power supply box 5; if the temperature is higher than the set upper threshold, the microcontroller outputs a control signal to the drive circuit of the semiconductor refrigeration plate 1104, and increases the working current of the semiconductor refrigeration plate 1104 by adjusting the pulse width modulation signal of the drive circuit, thereby improving its cooling power; on the contrary, if the temperature is lower than the set lower threshold, the microcontroller reduces the working current of the semiconductor refrigeration plate 1104 through the drive circuit, reducing the cooling power, so as to ensure that the power supply box 5 is always maintained in a suitable working temperature range, and ensure the stable operation of the hybrid energy storage welding inverter power supply, and evenly distribute multiple high-precision temperature sensors in the power supply box 5, collect temperature data in real time, and send it to the microcontroller after pre-processing by the signal conditioning circuit. The microcontroller adjusts the cooling power of the semiconductor refrigeration plate 1104 according to the temperature according to the preset temperature-power adjustment algorithm. When the temperature is higher than the upper threshold, the cooling power is increased, and when it is lower than the lower threshold, the cooling power is reduced. This adaptive adjustment mechanism ensures that the power supply box 5 is always maintained within a suitable operating temperature range, avoiding over-cooling or under-cooling, thereby ensuring stable operation of the equipment and saving energy.The layout of multiple temperature sensors ensures comprehensive monitoring of the temperature in the power supply box 5, and forms an intelligent and efficient temperature control system with the control and adjustment of the microcontroller and the semiconductor refrigeration plate 1104. Compared with the traditional heat dissipation method with fixed refrigeration power, it can better adapt to different working environments and load changes, and provide more reliable guarantee for the stable operation of the equipment. The hot end of the semiconductor refrigeration plate 1104 is in contact with the heat spreader 1105, and the cold end of the semiconductor refrigeration plate 1104 is in contact with the water tank 1106. A heat exchange tube 1102 is arranged above the water tank 1106, and a second heat exchange tube 1102 is arranged on the outside of the heat exchange tube 1102. The fin 1103 and the fan 1107 are arranged behind the heat exchange tube 1102. The fan 1107 drives the low-temperature airflow to cool the supercapacitor module 10. One end of the heat exchange tube 1102 is connected to the water tank 1106 through the connecting tube 1108. The other end of the heat exchange tube 1102 is connected to the cavity between the shell 1202 and the battery cell through the connecting tube 1108. The hot end of the semiconductor refrigeration plate 1104 is in contact with the heat plate 1105, and the cold end is in contact with the water tank 1106. The heat exchange tube 1102 above the water tank 1106, the second heat exchange fin 1103 and the fan 1107 together constitute a heat dissipation system. The fan 1107 drives the low-temperature airflow to cool the supercapacitor module 10. One end of the heat exchange tube 1102 is connected to the water tank 1106, and the other end is connected to the cavity of the lithium phosphate battery module 12, forming a complete heat dissipation cycle. This structural design makes full use of the cooling effect of the semiconductor refrigeration plate 1104, transfers heat evenly through the heat plate 1105, and then uses the coolant circulation in the water tank 1106 and the heat exchange tube 1102 and the forced convection of the fan 1107 to achieve efficient heat dissipation of key components such as the supercapacitor module 10 and the lithium phosphate battery module 12, ensuring that these components work at a suitable temperature, improving the stability and reliability of the entire power system, and ensuring the long-term stable operation of the equipment. The water tank 1106 has a built-in circulation pump, and the water tank 1106 is filled with a cooling medium. The cooling medium circulates in the water tank 1106, the heat exchange tube 1102, and the cavity between the sealing shell and the outer shell 1202 through the circulation pump; the cooling medium is a coolant with good heat dissipation performance and chemical stability. The water tank 1106 has a built-in circulation pump and is filled with a coolant with good heat dissipation performance and chemical stability. The coolant circulates in the water tank 1106, the heat exchange tube 1102, and the battery module cavity through the circulation pump to continuously take away heat. Good heat dissipation performance ensures efficient heat dissipation, and chemical stability ensures that the coolant will not deteriorate or corrode the equipment during long-term circulation, thereby extending the service life of the equipment.This circulating heat dissipation method cooperates with components such as semiconductor refrigeration plate 1104, heat spreader 1105, heat exchange tube 1102 and fan 1107 to form an efficient and stable heat dissipation system, which provides reliable heat dissipation guarantee for the hybrid energy storage welding inverter power supply, allowing the equipment to maintain normal operating temperature even under long-term, high-load working conditions. A support foot 502 is installed on the side of the bottom end of the power supply box 5 away from the sliding seat 8.

[0035] Embodiment 4 In order to facilitate the assembly of the power supply controller 4 and the power supply box 5, for example, Figures 1 to 7 As shown, the present invention further includes: a handle 3 is installed on the power controller 4, and lock buckles 7 are provided on both sides of the power controller 4 and the power supply box 5, and the power controller 4 and the power supply box 5 are locked and fixed by the lock buckles 7.

[0036] Working principle: Initial preparation stage: Place the device at a suitable location and adjust the height of the pull rod 1 through the telescopic rod 2 to suit different operators and working environments. Use the rollers 6 and the sliding seat 8 to move the device to the desired working location, and then connect the input power supply seat 9 to the power grid to power the device. This stage mainly involves the physical placement of the device and preparation for the grid connection, without complex electrical principles.

[0037] Energy input and storage stage: The AC power of the power grid enters the bidirectional inverter through the input power supply socket 9, and the bidirectional inverter converts the AC power into DC power. A part of the DC power is used to charge the supercapacitor module 10 and the lithium phosphate battery module 12 to store electrical energy; the other part of the DC power enters the subsequent welding module. The bidirectional smart meter collects the power price and power consumption data of the power grid in real time, and interacts with the microcontroller of the adaptive switching circuit module to provide data support for the subsequent power supply strategy adjustment.

[0038] The bidirectional inverter adopts a full-bridge topology structure, which consists of four power switch tubes (IGBT or MOSFET) connected in pairs to form bridge arms. In the forward energy conversion (inversion process from DC side to AC side), the two switch tubes on the diagonal are controlled to be turned on and off alternately to convert DC power into AC power output. For example, when one pair of switch tubes on the diagonal is turned on, the current flows from the positive pole of the DC power supply through the turned-on switch tube to the AC load, and then returns to the negative pole of the DC power supply through the other pair of turned-on switch tubes, forming a complete loop and outputting the positive half cycle of the AC voltage; in the other half cycle, the switch tubes on the other pair of diagonals are controlled to be turned on to realize the output of the negative half cycle of the AC voltage. In the reverse energy conversion (rectification process from AC side to DC side), according to the phase of the AC input voltage, the turn-on sequence of the four switch tubes is reasonably controlled to convert AC power into DC power and store it in the energy storage device. At the same time, advanced pulse width modulation technology is used to accurately control the conduction time and frequency of the switch tube, effectively reducing the harmonic content of the output voltage and current, and improving energy conversion efficiency and output performance stability.

[0039] Welding output stage: When welding is required, the DC pulse welding module and the high-frequency inverter module work together according to the welding process requirements. The built-in high-performance digital signal processor (DSP) of the DC pulse welding module accurately controls the frequency, width and amplitude of the pulse according to the preset welding process parameters, and outputs a pulse signal that meets the requirements. The high-frequency inverter module adopts soft switching technology, reduces switching losses through a resonant circuit, and inverts the DC pulse signal into high-frequency AC power. After being connected in series through the electrical circuit, they are connected to the welding output interface together to output a composite welding current for welding operations.

[0040] The high-frequency inverter module adopts soft switching technology, and adds resonant inductors and resonant capacitors to the main circuit to form a resonant circuit. During the on-off process of the switch tube, the resonance phenomenon generated by the resonant circuit is used to make the voltage across the switch tube or the current flowing through the switch tube approach zero at the moment of the switch action. In the zero voltage switching mode, before the switch tube is turned on, the voltage across the switch tube is reduced to zero through the resonant circuit to avoid conduction loss; in the zero current switching mode, before the switch tube is turned off, the current flowing through the switch tube is reduced to zero by resonance, eliminating the current tailing phenomenon at the time of shutdown and reducing the shutdown loss. Soft switching technology increases the switching frequency, reduces the volume and weight of the filter components at the same power output, reduces the harmonic content in the circuit, improves the power quality, and improves the inverter efficiency. The DC pulse welding module has a built-in high-performance digital signal processor (DSP) as the control core. In terms of controlling pulse frequency, DSP generates precise clock signals through the internal timer according to the preset welding process parameters, determines the pulse repetition period, and realizes precise adjustment of pulse frequency. It can flexibly switch in a wide frequency range of 10Hz-1000Hz. When controlling pulse width, DSP uses pulse width modulation technology to accurately control the pulse conduction time by changing the duty cycle of the PWM signal according to the requirements of droplet transition and weld formation in the welding process. The pulse width can be finely adjusted in the range of 10μs-1000μs. For the control of pulse amplitude, it is equipped with a high-performance power amplifier and a closed-loop feedback circuit. According to the requirements of different welding materials and welding positions for current amplitude, DSP outputs corresponding control signals to the power amplifier, adjusts its amplification factor, and changes the pulse output amplitude; at the same time, the output current signal is collected in real time through the sampling resistor and fed back to the DSP for comparative analysis. If there is a deviation between the actual amplitude and the set value, the DSP immediately adjusts the control signal to ensure that the pulse amplitude is always stable within the set range.

[0041] Power supply mode switching stage: During the welding process, the voltage sensor and current sensor collect the electrical signals on the bidirectional inverter and the grid connection line and the energy storage output line in real time, and transmit them to the single-chip microcomputer. The single-chip microcomputer analyzes the signals according to the preset control algorithm. When the grid power supply fluctuation or load demand change is detected, the single-chip microcomputer controls the bidirectional inverter drive circuit, adjusts the switching frequency and duty cycle of the bidirectional inverter, realizes the charge and discharge control of the energy storage device, and smoothly switches between grid power supply and energy storage power supply, ensuring the stable and reliable operation of the welding inverter power supply.

[0042] The voltage sensor and current sensor collect electrical signals in real time and transmit the analog signals to the analog-to-digital conversion module built into the microcontroller for digital processing. The microcontroller analyzes the digitized signals according to the preset control algorithm to determine the current power supply status, load demand, and charge status of the energy storage device. When power supply fluctuations or load demand changes are detected, the microcontroller controls the driving circuit of the bidirectional inverter, adjusts the switching frequency and duty cycle of the bidirectional inverter, realizes the charge and discharge control of the energy storage device, and smoothly switches between grid power supply and energy storage power supply, ensuring stable and reliable operation of the welding inverter power supply.

[0043] Cooling stage: During the operation of the equipment, the supercapacitor module 10 and the lithium phosphate battery module 12 will generate heat. The hot end of the semiconductor refrigeration plate 1104 in the protective shell 1101 is in contact with the heat spreader 1105, and the cold end is in contact with the water tank 1106. The semiconductor refrigeration plate 1104 works to transfer heat to the heat spreader 1105, and the heat spreader 1105 evenly distributes the heat and dissipates it through the first heat exchange fins 501. Under the action of the circulating pump, the coolant in the water tank 1106 circulates in the cavity between the water tank 1106, the heat exchange tube 1102, and the outer shell 1202 of the lithium phosphate battery module 12 and the sealed shell to take away the heat. The fan 1107 drives the low-temperature airflow to cool the supercapacitor module 10, forming a complete heat dissipation cycle to ensure that the equipment operates at an appropriate temperature. At the same time, the cooling power of the semiconductor refrigeration plate 1104 is adaptively adjusted according to the temperature in the power supply box 5. Multiple high-precision temperature sensors collect temperature data in real time, which is sent to the microcontroller after pre-processing by the signal conditioning circuit. The microcontroller adjusts the cooling power of the semiconductor refrigeration plate 1104 according to the preset temperature-power adjustment algorithm to maintain the appropriate temperature in the power supply box 5.

[0044] The sealed shell of the lithium phosphate battery module 12 is made of insulating and heat-insulating materials to prevent electrical interference and heat transfer between the battery core and the shell 1202. At the same time, the cavity between the sealed shell and the shell 1202 is connected to the water tank 1106 through the connecting pipe 1108, providing a basis for the heat dissipation cycle. The hot end of the semiconductor refrigeration plate 1104 in the protective shell 1101 is in contact with the heat plate 1105, and the cold end is in contact with the water tank 1106. The heat exchange tube 1102, the second heat exchange fin 1103 and the fan 1107 above the water tank 1106 together constitute a heat dissipation system. The fan 1107 drives the low-temperature airflow to cool the supercapacitor module 10. One end of the heat exchange tube 1102 is connected to the water tank 1106, and the other end is connected to the cavity of the lithium phosphate battery module 12, forming a complete heat dissipation cycle. The water tank 1106 has a built-in circulation pump, which is filled with a coolant with good heat dissipation performance and chemical stability. The coolant circulates under the action of the circulation pump and continuously takes away heat. The cooling power of the semiconductor refrigeration chip 1104 is adaptively adjusted according to the temperature in the power supply box 5. Multiple high-precision temperature sensors collect temperature data in real time, which is sent to the microcontroller after pre-processing by the signal conditioning circuit. The microcontroller judges the temperature condition based on the preset temperature-power adjustment algorithm, and adjusts the cooling power of the semiconductor refrigeration chip 1104 to ensure that the power supply box 5 is always maintained in an appropriate operating temperature range.

[0045] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hybrid energy storage welding inverter power supply, comprising a power supply box (5), a power supply controller (4) being installed at the upper end of the power supply box (5), and a control panel (401) being provided on the power supply controller (4), characterized in that: The power supply box (5) is mounted on a sliding seat (8), rollers (6) are mounted on both sides of the sliding seat (8), and the sliding seat (8) moves via the rollers (6); a telescopic rod (2) is mounted on the sliding seat (8), a pull rod (1) is mounted on the top of the telescopic rod (2), an input power supply seat (9) is provided on one side of the power supply box (5), and the input power supply seat (9) is sleeved and mounted on one end of the pull rod (1) close to the sliding seat (8); The power controller (4) has a built-in bidirectional inverter, an adaptive switching circuit module, a high-frequency inverter module and a DC pulse welding module. One end of the bidirectional inverter is connected to the power grid via an input power supply socket (9), and the other end is respectively connected to a super capacitor module (10) and a lithium phosphate battery module (12) for coordinating the bidirectional flow of energy in each part. The high-frequency inverter module and the DC pulse welding module are connected in series via an electrical circuit and are connected to a welding output interface. The two work together to provide a composite welding output. The high-frequency inverter module and the DC pulse welding module are arranged adjacent to each other on the circuit board to reduce signal interference. The adaptive switching circuit module includes a voltage sensor, a current sensor and a single-chip microcomputer. The voltage sensor and the current sensor are installed on the connection line between the bidirectional inverter and the power grid and the energy storage output line to collect electrical signals in real time. The single-chip microcomputer is connected to the voltage and current sensors and the bidirectional inverter through a data line to receive sensor signals and control the bidirectional inverter to switch the working mode. A bidirectional smart meter is connected in series between the power grid and the bidirectional inverter through an electrical line to collect power grid electricity prices and electricity consumption data, and is connected to the single-chip microcomputer through a data line to realize data interaction. A heat dissipation module (11) is installed inside the power supply box (5), and the heat dissipation module (11) is provided with a protective shell (1101). A super capacitor module (10) and a lithium phosphate battery module (12) are respectively installed on both sides of the heat dissipation module (11) in the power supply box (5). A heat spreader (1105) is embedded at the bottom end of the heat dissipation module (11) of the power supply box (5), and a first heat exchange fin (501) is provided on a surface of one side of the heat spreader (1105) located outside the power supply box (5). A support foot (502) is installed on the side of the bottom end of the power supply box (5) away from the sliding seat (8); The power controller (4) is provided with a handle (3), and lock buckles (7) are provided on both sides of the power controller (4) and the power supply box (5), and the power controller (4) and the power supply box (5) are locked and fixed by the lock buckles (7).

2. A hybrid energy storage welding inverter power supply according to claim 1, characterized in that: The telescopic rod (2) can be adjusted in length, and the height of the pull rod (1) can be adjusted according to usage requirements.

3. A hybrid energy storage welding inverter power supply according to claim 1, characterized in that: The bidirectional inverter adopts a full-bridge topology structure, and has high energy conversion efficiency and stable output performance; the full-bridge topology structure of the bidirectional inverter is composed of four power switch tubes, which are connected to form bridge arms in pairs, and the power switch tubes are selected from insulated gate bipolar transistors IGBT or metal oxide semiconductor field effect transistors MOSFET; in the forward energy conversion process, that is, the inversion process from the DC side to the AC side, the DC power is converted into AC power output by controlling the two switch tubes on the diagonal to be alternately turned on and off; for example, when the switch tubes on one pair of diagonals are turned on, the current flows from the positive electrode of the DC power supply through the turned-on switch tubes to the AC load, and then returns to the negative electrode of the DC power supply through the other pair of turned-on switch tubes, forming a complete loop, and outputting the positive half cycle of the AC voltage; in the other half cycle, the output of the negative half cycle of the AC voltage is realized by controlling the turn-on of the switch tubes on the other pair of diagonals; in the reverse energy conversion, that is, the rectification process from the AC side to the DC side, the turn-on sequence of the four switch tubes is reasonably controlled according to the phase of the AC input voltage, and the AC power is converted into DC power and stored in the energy storage device; This full-bridge topology can fully utilize the voltage of the DC power supply in each switching cycle, which reduces energy loss and improves energy conversion efficiency compared to other topologies. At the same time, by adopting advanced pulse width modulation technology, the conduction time and frequency of the switch tube are accurately controlled, effectively reducing the harmonic content of the output voltage and current, making the output AC power purer, ensuring stable output performance, and meeting the strict requirements of the hybrid energy storage welding inverter power supply for power conversion and output under different working conditions.

4. A hybrid energy storage welding inverter power supply according to claim 1, characterized in that: The single-chip microcomputer of the adaptive switching circuit module adopts a high-performance, low-power microcontroller, which can quickly and accurately process the electrical signals collected by the sensor and control the bidirectional inverter. Specifically, when the sensor collects electrical signals such as voltage and current on the input side, these analog signals will be transmitted to the analog-to-digital conversion module built into the single-chip microcomputer for digital processing. The single-chip microcomputer analyzes the digitized signals according to a preset control algorithm to determine the current power supply status, load demand, and charge state of the energy storage device. When a grid power supply fluctuation or a load demand change is detected, the single-chip microcomputer controls the driving circuit of the bidirectional inverter to adjust the switching frequency and duty cycle of the bidirectional inverter, thereby realizing the charging and discharging control of the energy storage device and smooth switching between grid power supply and energy storage power supply, thereby ensuring stable and reliable operation of the welding inverter power supply.

5. A hybrid energy storage welding inverter power supply according to claim 1, characterized in that: The high-frequency inverter module adopts soft switching technology to reduce switching losses and improve inverter efficiency. Specifically, the high-frequency inverter module forms a resonant circuit by adding a resonant inductor and a resonant capacitor in the main circuit. In the process of switching on and off the switch tube, the resonance phenomenon generated by the resonant circuit is used to make the voltage across the switch tube or the current flowing through the switch tube approach zero at the moment of switching action. For example, in the zero voltage switching mode, before the switch tube is turned on, the voltage across the switch tube is reduced to zero through the resonant circuit. At this time, the switch tube is turned on to avoid the conduction loss caused by the existence of voltage. In the zero current switching mode, before the switch tube is turned off, the current flowing through the switch tube is reduced to zero by resonance, thereby eliminating the current tailing phenomenon during shutdown and reducing the shutdown loss. At the same time, the soft switching technology increases the switching frequency. Under the same power output, the volume and weight of the filter element are reduced, the harmonic content in the circuit is reduced, and the power quality is improved. Under the comprehensive effect, the inverter efficiency is significantly improved, and the efficient and stable operation of the hybrid energy storage welding inverter power supply is guaranteed.

6. A hybrid energy storage welding inverter power supply according to claim 1, characterized in that: The DC pulse welding module can accurately control the frequency, width and amplitude of the pulse to meet the requirements of different welding processes; the DC pulse welding module has a built-in high-performance digital signal processor as the control core; in terms of controlling the pulse frequency, the DSP generates a precise clock signal through an internal timer according to the preset welding process parameters, so as to determine the repetition period of the pulse, thereby realizing the precise adjustment of the pulse frequency, and can flexibly switch within a wider frequency range, such as 10Hz-1000Hz, to meet the requirements of high-frequency pulses for thin plate welding and low-frequency pulses for thick plate welding; when controlling the pulse width, the DSP uses pulse width modulation technology to adjust the pulse width according to the requirements of droplet transfer, weld formation, etc. in the welding process by changing the PWM signal The duty cycle of the signal can be adjusted accurately to control the on-time of the pulse. The pulse width can be adjusted in the microsecond range, such as 10μs-1000μs, to ensure accurate control of energy input during welding. For the control of pulse amplitude, the DC pulse welding module is equipped with a high-performance power amplifier and a closed-loop feedback circuit. The DSP outputs the corresponding control signal to the power amplifier according to the requirements of different welding materials and welding positions for current amplitude, adjusts its amplification factor, and thus changes the pulse output amplitude. At the same time, the output current signal is collected in real time through the sampling resistor and fed back to the DSP for comparative analysis. If there is a deviation between the actual amplitude and the set value, the DSP immediately adjusts the control signal to ensure that the pulse amplitude is always stable within the set range, effectively improving the welding quality and adaptability.

7. A hybrid energy storage welding inverter power supply according to claim 1, characterized in that: The lithium phosphate battery module (12) is provided with an outer shell (1202), a battery cell is installed in the outer shell (1202) via a sealed shell, a cavity is provided between the sealed shell and the outer shell (1202), and the cavity between the sealed shell and the outer shell (1202) is connected to the water tank (1106) via a connecting pipe (1108), and a wiring electrode (1201) is provided at the top of the outer shell (1202); the sealed shell is made of insulating and heat-insulating materials to prevent electrical interference and heat transfer between the battery cell and the outer shell (1202).

8. A hybrid energy storage welding inverter power supply according to claim 1, characterized in that: A semiconductor refrigeration sheet (1104) is installed on the upper surface of the heat spreader (1105) in the protective shell (1101); the hot end of the semiconductor refrigeration sheet (1104) is in contact with the heat spreader (1105); the cold end of the semiconductor refrigeration sheet (1104) is in contact with the water tank (1106); a heat exchange tube (1102) is arranged above the water tank (1106); a second heat exchange fin (1103) is arranged on the outer side of the heat exchange tube (1102); a fan (1107) is arranged behind the heat exchange tube (1102); a low-temperature airflow is driven by the fan (1107) to cool the supercapacitor module (10); one end of the heat exchange tube (1102) is connected to the water tank (1106) via a connecting tube (1108); and the other end of the heat exchange tube (1102) is connected to the cavity between the shell (1202) and the battery cell via the connecting tube (1108).

9. A hybrid energy storage welding inverter power supply according to claim 8, characterized in that: The water tank (1106) has a built-in circulation pump, and the water tank (1106) is filled with a cooling medium, and the cooling medium circulates through the water tank (1106), the heat exchange tube (1102), and the cavity between the sealing shell and the outer shell (1202) through the circulation pump; the cooling medium is a coolant, which has good heat dissipation performance and chemical stability.

10. A hybrid energy storage welding inverter power supply according to claim 8, characterized in that: The cooling power of the semiconductor cooling sheet (1104) can be adaptively adjusted according to the temperature in the power supply box (5); specifically, a plurality of high-precision temperature sensors are evenly distributed in the power supply box (5) to collect temperature data at different positions in the box in real time; these temperature sensors transmit the collected analog temperature signals to the signal conditioning circuit connected thereto, perform pre-processing such as filtering and amplification on the signals, and then send them to the microcontroller; the microcontroller pre-stores a temperature-power adjustment algorithm formulated according to the normal working temperature range of the electronic components in the power supply box (5); after receiving the processed temperature signal, the microcontroller performs calculation analysis based on the algorithm to determine the current temperature condition in the power supply box (5); if the temperature is higher than the set upper threshold value, the microcontroller outputs a control signal to the drive circuit of the semiconductor cooling sheet (1104), and increases the working current of the semiconductor cooling sheet (1104) by adjusting the pulse width modulation signal of the drive circuit, thereby improving its cooling power; On the contrary, if the temperature is lower than the set lower threshold value, the microcontroller reduces the operating current of the semiconductor cooling plate (1104) through the driving circuit, thereby reducing the cooling power, thereby ensuring that the power supply box (5) is always maintained within a suitable operating temperature range, thereby ensuring the stable operation of the hybrid energy storage welding inverter power supply.

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