Test platform for large energy storage converter

Abstract

The invention relates to the technical field of energy storage converter testing, in particular to a testing platform for a large energy storage converter. Comprising a workbench, and a mounting frame is arranged above the workbench; sliding grooves are formed in the two side walls of the workbench. The mounting frame is connected into the sliding groove in a sliding manner; a first lead screw and a polished rod are rotationally connected into the two sliding grooves. According to the invention, the clamping plate is arranged to clamp and fix the large-scale energy storage converter, so that the plugging port of the large-scale energy storage converter is aligned with the connector clamped by the clamping block, and then the driving motor is controlled to drive the mounting frame through the first screw rod to drive the connector clamped by the clamping block to approach the large-scale energy storage converter; the connector clamped by the clamping block can be inserted into the plugging port of the large-scale energy storage converter, so that line connection is realized, manual connection by an operator is not needed, the electric shock risk is reduced, the wearing frequency of a protective appliance is reduced, the service life of the protective appliance is prolonged, and the consumable cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of energy storage converter testing technology, specifically a testing platform for large-scale energy storage converters. Background Technology

[0002] A power storage converter (PCS) is a bidirectional power conversion device that connects a battery system to the power grid. It consists of a DC / AC bidirectional converter, a control unit, and other components. Its main functions include controlling the battery charging and discharging process, regulating the power grid, and obtaining battery system status information in real time through a communication interface. After the energy storage converter (PCS) is completed in production and assembly, it needs to undergo systematic electrical performance verification through a professional testing platform. During the testing process, an electrical connection between the energy storage converter and the testing platform must first be established through a dedicated test cable. On this basis, the testing platform collects the input / output electrical parameters (such as voltage, current, power, frequency, harmonic distortion rate, etc.) of the energy storage converter under different operating conditions in real time, and generates an electrical performance evaluation report through data analysis, and finally completes the verification of key indicators such as equipment conversion efficiency and response speed. Since the DC side voltage of energy storage converters is usually 200V-1500V, and the voltage of large energy storage converters is no less than 600V, all of which are far beyond the safe voltage for the human body, the energy storage converter must be completely de-energized and discharged before connecting the lines. After that, the operator must wear insulating equipment and use a voltage detector to verify that there is no voltage before the lines can be connected, in order to avoid the risks of high voltage electric shock, short circuit, arc burns and other risks. However, the testing process for energy storage converters involves multiple progressive steps, including power outage confirmation, donning of insulation protection, voltage verification, and line connection. This not only prolongs the testing time and reduces efficiency but also accelerates the wear and tear of protective gear such as insulating gloves due to repeated wearing. If insulating gloves with no surface damage but cracked internal insulation are used during voltage verification, they may break down upon contact with high voltage, leading to arc burns or even electric shock. In view of this, in order to overcome the above-mentioned technical problems, the present invention proposes a test platform for large-scale energy storage converters, which solves the above-mentioned technical problems. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention proposes a testing platform for large-scale energy storage converters. This invention uses clamping plates to hold and fix the large-scale energy storage converter, aligning the converter's connector with the clamped head. Then, a drive motor, via a lead screw, drives the mounting bracket to bring the clamped head closer to the large-scale energy storage converter, allowing it to be inserted into the converter's connector, thus achieving circuit connection. This eliminates the need for manual connection by operators, reducing the risk of electric shock, minimizing the number of times protective gear needs to be worn, extending its lifespan, and lowering consumable costs.

[0004] The technical solution adopted by this invention to solve its technical problem is: a test platform for large-scale energy storage converters, comprising: A workbench is provided with a mounting frame on top of it; both side walls of the workbench are provided with sliding grooves; the mounting frame is slidably connected in the sliding grooves; a lead screw and a guide rod are rotatably connected in the two sliding grooves; the mounting frame is screw-driven to the lead screw; a drive motor is installed at one end of the workbench; the drive motor is used to drive the lead screw to rotate. The worktable has a clamping plate with a slotted groove on its upper surface. A screw is rotatably connected within the slotted groove. The threads at both ends of the screw are opposite. There are two clamping plates. The two clamping plates are helically connected to the two ends of the screw. A connecting unit is installed inside the worktable. The lead screw and the screw are connected through the connecting unit. The operation panel is installed on one end of the workbench near the drive motor; a clamping block is installed on the upper end of the mounting bracket; the clamping block is used to hold the connector; the end of the connector away from the clamping block is connected to the operation panel via a connecting line.

[0005] Preferably, the clamping block has circular grooves on both sides; a clamping piece is slidably connected in the circular groove; the clamping piece is connected to the bottom of the circular groove by a connecting spring.

[0006] Preferably, the connecting unit includes a connecting rod; the output end of the drive motor has a square slot; the connecting rod is slidably connected within the square slot; the connecting rod is connected to the bottom of the square slot by a push spring; an electromagnetic ring is embedded in the bottom of the square slot; a bevel gear shaft and a bevel gear disc are rotatably connected within the worktable; the bevel gear shaft and the screw are connected by a belt drive; the two ends of the first lead screw have interconnected first and second rectangular slots; a rectangular rod is slidably connected within the first rectangular slot; the rectangular rod is connected to the bottom of the first rectangular slot by a support spring; a sealing plate is slidably connected within the second rectangular slot; a slot for the bevel gear disc to mate with the rectangular rod is provided at the end of the first rectangular slot; and a magnet is embedded at the end of the connecting rod near the drive motor.

[0007] Preferably, a laser positioner is embedded on the side of the clamp block away from the drive motor.

[0008] Preferably, a second lead screw is rotatably connected inside the mounting frame; a mounting plate is provided on one side of the mounting frame; the mounting plate is screw-driven to the second lead screw; the clamping block is mounted on the upper end of the mounting plate; a first helical gear and a second helical gear are installed inside the mounting frame; the first helical gear is fixedly connected to the second lead screw; the second helical gear is slidably connected to the guide rod; the guide rod is belt-driven to the output shaft of the drive motor.

[0009] Preferably, the mounting plate has a mounting groove at its upper end; a No. 3 lead screw is rotatably connected in the mounting groove; the No. 3 lead screw is screw-driven to the clamping block; a servo motor is mounted on one side of the worktable; a transmission unit is installed between the No. 3 lead screw and the servo motor; the servo motor drives the No. 3 lead screw to rotate through the transmission unit.

[0010] Preferably, the transmission unit includes a straight rod; the straight rod is rotatably connected to the worktable; the output shaft of the servo motor is connected to the straight rod; a bevel gear shaft is rotatably connected inside the mounting bracket; a first bevel gear ring is provided below the bevel gear shaft; the first bevel gear ring is slidably connected to the straight rod; a second bevel gear ring is slidably connected to the surface of the bevel gear shaft; a bevel gear disk is fixedly connected to one end of the third lead screw near the second bevel gear ring; the bevel gear disk meshes with the second bevel gear ring; a cavity is opened inside the mounting bracket, the second bevel gear ring is slidably connected in the cavity, a buffer spring is sleeved on the surface of the bevel gear shaft, one end of the buffer spring is connected to the second bevel gear ring, and the other end is connected to the bottom of the cavity.

[0011] Preferably, the output shaft surface of the drive motor has a groove communicating with the square slot; a protrusion is slidably sealed in the groove; and the inner ring wall of the belt has an engagement groove that mates with the protrusion.

[0012] The beneficial effects of this invention are as follows: 1. This invention uses clamping plates to hold and fix a large energy storage converter, aligning the connector of the large energy storage converter with the connector held by the clamping plates. Then, the drive motor drives the mounting bracket via a lead screw to bring the connector held by the clamping plates closer to the large energy storage converter, allowing the connector to be inserted into the connector of the large energy storage converter, thus achieving line connection. This eliminates the need for manual connection by operators, reducing the risk of electric shock, decreasing the number of times protective equipment needs to be worn, extending the life of protective equipment, and reducing consumable costs.

[0013] 2. By incorporating a laser positioner, this invention enables the second and third lead screws to drive the clamping block in vertical and horizontal displacement. The laser positioner accurately positions the clamping block against the interface of the large energy storage converter, ensuring that the connector held by the clamping block aligns with the interfaces of different models of large energy storage converters. This guarantees precise docking of the connector with the interfaces of different models of large energy storage converters, eliminating the need for repeated adjustments to the clamping block's position. This significantly reduces the testing time for large energy storage converters and improves their testing efficiency. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a perspective view of the present invention; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a partial cross-sectional view of the workbench used in this invention; Figure 4 yes Figure 3 Enlarged view of point B in the middle; Figure 5 yes Figure 3 Enlarged view of point C in the middle; Figure 6 yes Figure 3 Enlarged view of point D in the middle; Figure 7 This is a partial cross-sectional view of the mounting bracket used in this invention; Figure 8 yes Figure 7 Enlarged view at point E in the middle; Figure 9 yes Figure 7 Enlarged view at point F; Figure 10 This is a partial cross-sectional view of the clamping block used in this invention; In the diagram: 1. Workbench; 11. Slide groove; 111. Lead screw No. 1; 112. Smooth rod; 113. Rectangular groove No. 1; 114. Rectangular groove No. 2; 115. Rectangular rod; 116. Support spring; 117. Sealing plate; 12. Drive motor; 121. Connecting rod; 122. Square groove; 123. Push spring; 124. Electromagnetic ring; 125. Magnet; 13. Strip groove; 131. Clamping plate; 132. Screw; 14. Operation panel; 141. Connector; 15. Bevel gear shaft; 151. Bevel gear disc; 152. Transmission belt; 153. Slot; 16. Belt; 161. Engagement groove; 17. Groove; 171. Protrusion; 2. Mounting bracket; 21. Clamping block; 211. Circular groove; 212. Clamping piece; 213. Connecting spring; 22. Laser positioner; 23. No. 2 lead screw; 231. Mounting plate; 232. No. 1 helical gear; 233. No. 2 helical gear; 24. Mounting groove; 241. No. 3 lead screw; 25. Servo motor; 251. Straight rod; 252. Bevel gear shaft; 253. No. 1 bevel gear ring; 254. No. 2 bevel gear ring; 255. Bevel gear disk; 256. Cavity; 257. Buffer spring. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0017] like Figures 1 to 10 As shown, the test platform for large-scale energy storage converters according to the present invention includes: A workbench 1 is provided, with a mounting frame 2 mounted on top of it. Slide grooves 11 are formed on both side walls of the workbench 1. The mounting frame 2 is slidably connected within the slide grooves 11. A lead screw 111 and a guide rod 112 are rotatably connected within the two slide grooves 11. The mounting frame 2 is helically connected to the lead screw 111. A drive motor 12 is mounted at one end of the workbench 1. The drive motor 12 drives the lead screw 111 to rotate. The worktable 1 has a clamping plate 131, and a strip-shaped groove 13 is formed on the upper surface of the worktable 1. A screw 132 is rotatably connected in the strip-shaped groove 13. The threads at both ends of the screw 132 are arranged in opposite directions. There are two clamping plates 131. The two clamping plates 131 are helically connected to the two ends of the screw 132. A connecting unit is installed in the worktable 1. The lead screw 111 and the screw 132 are connected through the connecting unit. The operation panel 14 is installed on the workbench 1 at one end near the drive motor 12; the upper end of the mounting bracket 2 is equipped with a clamping block 21; the clamping block 21 is used to clamp the connector 141; the end of the connector 141 away from the clamping block 21 is connected to the operation panel 14 through a connecting line.

[0018] In one embodiment of the present invention, the clamping block 21 has circular grooves 211 on both sides; a clamping piece 212 is slidably connected in the circular groove 211; the clamping piece 212 is connected to the bottom of the circular groove 211 by a connecting spring 213.

[0019] In one embodiment of the present invention, the connecting unit includes a connecting rod 121; the output end of the drive motor 12 has a square groove 122; the connecting rod 121 is slidably connected within the square groove 122; the connecting rod 121 and the bottom of the square groove 122 are connected by a push spring 123; an electromagnetic ring 124 is embedded in the bottom of the square groove 122; a bevel gear shaft 15 and a bevel gear disk 151 are rotatably connected within the worktable 1; the bevel gear shaft 15 and the screw 132 are connected by a belt drive 152. The first lead screw 111 has a first rectangular groove 113 and a second rectangular groove 114 that are interconnected at both ends; a rectangular rod 115 is slidably connected in the first rectangular groove 113; the rectangular rod 115 is connected to the bottom of the first rectangular groove 113 by a support spring 116; a sealing plate 117 is slidably connected in the second rectangular groove 114; a slot 153 that mates with the rectangular rod 115 is opened at the end of the bevel gear disk 151 near the first rectangular groove 113; a magnet 125 is embedded at the end of the connecting rod 121 near the drive motor 12.

[0020] During operation, the existing testing process for energy storage converters involves multiple progressive steps, including power outage confirmation, donning of insulation protection, voltage verification, and line connection. This not only prolongs the testing time and reduces testing efficiency, but also causes protective equipment such as insulating gloves to wear out faster due to repeated wearing. If insulating gloves with no surface damage but cracked internal insulation are used during voltage verification, they may break down upon contact with high voltage, leading to arc burns or even electric shock accidents.

[0021] To address this issue, the present invention uses a clamping plate 131 to hold and fix the large energy storage converter, aligning the connector of the large energy storage converter with the connector 141 held by the clamping block 21. Then, the drive motor 12 drives the mounting bracket 2 via the lead screw 111 to bring the connector 141 held by the clamping block 21 closer to the large energy storage converter, allowing the connector 141 to be inserted into the connector of the large energy storage converter, thereby achieving line connection without the need for manual connection by operators. This not only reduces the risk of electric shock but also reduces the number of times protective equipment needs to be worn, extends the life of protective equipment, and reduces consumable costs.

[0022] In its initial state, the mounting bracket 2 is located at one end of the workbench 1 near the drive motor 12. The surface of the mounting bracket 2 is coated with a ceramic coating. During use, the user uses a crane to lift the large energy storage converter to be tested onto the workbench 1, so that the large energy storage converter is positioned between the two clamping plates 131. At this time, the control electromagnetic ring 124 is energized, causing the electromagnetic ring 124 to generate the same magnetic poles as the magnet 125. This causes the magnet 125 to be pushed by the magnetic repulsion force, which drives the connecting rod 121 away from the bottom of the square slot 122. As the connecting rod 121 moves towards the second rectangular groove 114, it is pushed by the push spring 123. Until the connecting rod 121 is inserted into the second rectangular groove 114 and contacts the sealing plate 117, the current flowing through the electromagnetic ring 124 increases, increasing the magnetic repulsion force between the electromagnetic ring 124 and the magnet 125. This magnetic repulsion force pushes the magnet 125, causing the connecting rod 121 to stretch the push spring 123, thus pushing the sealing plate 117 continuously towards the bottom of the second rectangular groove 114. As the sealing plate 117 moves, the hydraulic oil between it and the bottom of the second rectangular groove 114 is filled with hydraulic oil. This allows the sealing plate 117 to squeeze the hydraulic oil in the second rectangular groove 114 into the first rectangular groove 113. The hydraulic oil entering the first rectangular groove 113 then pushes the rectangular rod 115 out of the first rectangular groove 113. This allows the rectangular rod 115 extending out of the first rectangular groove 113 to be inserted into the slot 153 on one side of the bevel gear disk 151, thus allowing the bevel gear disk 151 to engage with the first rectangular groove 113. When lead screw 111 is connected, drive motor 12 drives lead screw 111 to rotate, which in turn drives bevel gear disk 151 to rotate via rectangular rod 115. This causes bevel gear disk 151 to drive bevel gear shaft 15 to rotate, which in turn drives screw 132 to rotate via transmission belt 152. This causes screw 132 to drive clamping plates 131 at both ends to move closer together, clamping the large energy storage converter and placing it at the center of workbench 1.

[0023] When the large energy storage converter is located at the center of the workbench 1, the connector of the large energy storage converter is aligned with the connector 141 held by the clamping block 21. At this time, the control electromagnetic ring 124 is de-energized, so that the electromagnetic ring 124 no longer generates magnetic repulsion force on the magnet 125, so that the magnet 125 no longer pushes the connecting rod 121 to squeeze the sealing plate 117. Under the pull of the restoring force of the push spring 123, the connecting rod 121 enters the square groove 122, so that the connecting rod 121 no longer generates pushing force on the sealing plate 117, so that the hydraulic oil in the first rectangular groove 113 flows back to the second rectangular groove 114. At this time, the rectangular rod 115 extends out of the slot 153 and enters the first rectangular groove 113 under the pull of the restoring force of the support spring 116, so that the first lead screw 111 separates from the bevel gear disk 151. At this time, the user first pushes the two clamping pieces 212 away from each other, so that the two clamping pieces 212 stretch the connecting spring 213 and extend out of the circular groove 211, and then places the connector 141 on the clamping block. On block 21, the connector 141 is positioned between two clamping plates 212. Then, the clamping plates 212 are released, causing them to move closer together under the restoring force of the connecting spring 213. This clamps the connector 141 on the clamping block 21. The drive motor 12 is then controlled to rotate, causing the lead screw 111 to rotate. The lead screw 111 directly drives the mounting bracket 2 to move closer to the large energy storage converter. This causes the mounting bracket 2 to move the connector 141 clamped on the clamping block 21 closer to the connector interface of the large energy storage converter, allowing the connector 141 to be inserted into the connector interface. At this point, the circuit connection is complete. The user can then input a specific current signal into the large energy storage converter through the control panel 14, while simultaneously collecting parameters such as voltage, current, and power at the output end. The data is analyzed to generate an electrical performance evaluation report, ultimately completing the testing of key indicators such as the conversion efficiency and response speed of the large energy storage converter.

[0024] In one embodiment of the present invention, a laser positioner 22 is embedded on the side of the clamping block 21 away from the drive motor 12.

[0025] In one embodiment of the present invention, a second lead screw 23 is rotatably connected inside the mounting frame 2; a mounting plate 231 is provided on one side of the mounting frame 2; the mounting plate 231 is helically connected to the second lead screw 23; the clamping block 21 is installed on the upper end of the mounting plate 231; a first helical gear 232 and a second helical gear 233 are installed inside the mounting frame 2; the first helical gear 232 is fixedly connected to the second lead screw 23; the second helical gear 233 is slidably connected to the guide rod 112; the guide rod 112 is belt-driven connected to the output shaft of the drive motor 12 via a belt 16.

[0026] In one embodiment of the present invention, the mounting plate 231 has a mounting groove 24 at its upper end; a No. 3 lead screw 241 is rotatably connected in the mounting groove 24; the No. 3 lead screw 241 is screw-driven to the clamping block 21; a servo motor 25 is mounted on one side of the workbench 1; a transmission unit is installed between the No. 3 lead screw 241 and the servo motor 25; the servo motor 25 drives the No. 3 lead screw 241 to rotate through the transmission unit.

[0027] In one embodiment of the present invention, the transmission unit includes a straight rod 251; the straight rod 251 is rotatably connected to the worktable 1; the output shaft of the servo motor 25 is connected to the straight rod 251; a bevel gear shaft 252 is rotatably connected inside the mounting frame 2; a first bevel gear ring 253 is provided below the bevel gear shaft 252; the first bevel gear ring 253 is slidably connected to the straight rod 251; a second bevel gear ring 254 is slidably connected to the surface of the bevel gear shaft 252; a bevel gear disk 255 is fixedly connected to one end of the third lead screw 241 near the second bevel gear ring 254; the bevel gear disk 255 meshes with the second bevel gear ring 254; a cavity 256 is opened inside the mounting frame 2, the second bevel gear ring 254 is slidably connected inside the cavity 256, and a buffer spring 257 is sleeved on the surface of the bevel gear shaft 252, one end of the buffer spring 257 is connected to the second bevel gear ring 254, and the other end is connected to the bottom of the cavity 256.

[0028] In one embodiment of the present invention, the output shaft surface of the drive motor 12 is provided with a groove 17 communicating with the square groove 122; a protrusion 171 is slidably and sealingly connected in the groove 17; and the inner ring wall of the belt 16 is provided with a meshing groove 161 that cooperates with the protrusion 171.

[0029] During operation, the positions of the plug interfaces of different models of large energy storage converters are not the same. Therefore, when testing different models of large energy storage converters, the position of the clamp 21 needs to be repeatedly adjusted, which will greatly waste the testing time of the large energy storage converters.

[0030] To address this, the present invention incorporates a laser positioner 22. When the second lead screw 23 and the third lead screw 241 drive the clamping block 21 to perform vertical and horizontal displacement, the laser positioner 22 accurately positions the clamping block 21 against the interface of the large energy storage converter. This ensures that the connector 141 held by the clamping block 21 can be aligned with the interfaces of different models of large energy storage converters, guaranteeing precise docking of the connector 141 with the interfaces of different models of large energy storage converters. Furthermore, it eliminates the need for repeated adjustments to the position of the clamping block 21, significantly reducing the testing time for large energy storage converters and improving their testing efficiency.

[0031] In use, the user first hoists the large energy storage converter onto the upper part of the workbench 1, clamping the large energy storage converter with the clamping plate 131. Then, the user controls the electromagnetic ring 124 to generate a magnetic pole opposite to that of the magnet 125, causing the electromagnetic ring 124 to generate a magnetic attraction force on the magnet 125. This allows the magnet 125 to drive the connecting rod 121, which is fixed to it, to squeeze and push the spring 123 into the square groove 122. This causes the connecting rod 121 to extend out of the second rectangular groove 114 and squeeze the hydraulic oil in the square groove 122 into the groove 17. The hydraulic oil entering the groove 17 pushes the protrusion 171 out of the groove 17, allowing the protrusion 171 to insert into the meshing groove 161 of the inner ring wall of the belt 16. The drive motor 12 drives the belt 16 to rotate through the protrusions on the output end surface. Since the surface of the guide rod 112 is also provided with protrusions that mesh with the meshing groove 161, the belt 16 can drive the guide rod 112 to rotate through the protrusions on the surface of the guide rod 112 during the rotation of the drive motor 12. This causes the guide rod 112 to drive the first helical gear 232, which is slidably connected to it, to rotate. The first helical gear 232 can drive the second helical gear 233, which meshes with it, to rotate. Since the second helical gear 233 is fixedly connected to the second lead screw 23, the second helical gear 233 can drive the second lead screw 23 to rotate. This allows the second lead screw 23 to drive the mounting plate 231, which is helically connected to it, to move in the vertical direction.

[0032] During the vertical movement of the mounting plate 231 driven by the second lead screw 23, the user controls the servo motor 25 to operate, causing the servo motor 25 to drive the straight rod 251 to rotate. This causes the straight rod 251 to rotate the first bevel gear ring 253, which is slidably connected to it. Since the first bevel gear ring 253 meshes with the bevel gear shaft 252, it can drive the bevel gear shaft 252 to rotate. This, in turn, drives the second bevel gear ring 254, which is slidably connected to it, to rotate. During the vertical movement of the mounting plate 231 driven by the second lead screw 23, the mounting plate 231 will drive the bevel gear disk 255 to move upwards via the third lead screw 241. This allows the second bevel gear ring... The second bevel gear ring 254 can maintain engagement with the bevel gear disk 255. This invention, by incorporating a buffer spring 257, ensures that during the upward movement of the bevel gear disk 255 driven by the third lead screw 241, the bevel gear disk 255 no longer obstructs the second bevel gear ring 254. This allows the second bevel gear ring 254 to rise under the restoring force of the buffer spring 257, maintaining engagement with the bevel gear disk 255. Similarly, during the downward movement of the bevel gear disk 255, it pushes the second bevel gear ring 254 downward, causing the second bevel gear ring 254 to compress the buffer spring 257. Therefore, when the bevel gear shaft 252 drives the second bevel gear ring 254 downward, the second bevel gear ring 254 compresses the buffer spring 257. During the rotation of gear ring 254, the second bevel gear ring 254 drives the bevel gear disk 255, which is always meshed with it, to rotate. This causes the bevel gear disk 255 to drive the third lead screw 241, which is fixed to it, to rotate. The third lead screw 241 then drives the clamping block 21 to move laterally. Driven by the second and third lead screws 23 and 241, the clamping block 21 moves towards the large energy storage converter interface until the laser positioner 22 on one side of the clamping block 21 illuminates the large energy storage converter interface. At this point, the laser positioner 22 detects that the connector 141 held at the upper end of the clamping block 21 is aligned with the large energy storage converter interface. At this time, the control electromagnetic ring 124 is de-energized, allowing... Under the restoring force of the push spring 123, the connecting rod 121 enters the second rectangular slot 114, connecting the drive motor 12 to the first lead screw 111. The drive motor 12 drives the mounting bracket 2 through the first lead screw 111, causing the connector 141 at the upper end of the clamp block 21 to approach the large energy storage converter, so that the connector 141 is plugged into the interface of the large energy storage converter. Finally, the user inputs a specific current signal into the large energy storage converter through the control panel 14, and at the same time collects the voltage, current, power and other parameters of the output terminal. The data analysis generates an electrical performance evaluation report, and finally completes the testing of key indicators such as the conversion efficiency and response speed of the large energy storage converter.

[0033] Although robotic arms can also plug and unplug lines in large energy storage converters, the PCS (Power Control System) generates strong electromagnetic interference during operation. Since robotic arms rely on electronic control systems, sensor feedback, and actuators working in coordination, they are susceptible to command delays, inaccurate positioning, and even misjudgments in strong electromagnetic environments. Therefore, the design of this invention maintains a safe distance between electronic components and large energy storage converters, preventing electromagnetic interference from the large energy storage converter from affecting the electronic components of this invention. This avoids command delays, inaccurate positioning, and even misjudgments, ensuring the timeliness and accuracy of plugging and unplugging large energy storage converter lines, further improving the practicality of this invention.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test platform for large-scale energy storage converters, characterized in that: include: A workbench (1) is provided, and a mounting frame (2) is provided above the workbench (1); both sides of the workbench (1) are provided with sliding grooves (11); the mounting frame (2) is slidably connected in the sliding grooves (11); a lead screw (111) and a guide rod (112) are rotatably connected in the two sliding grooves (11); the mounting frame (2) is screw-driven to the lead screw (111); a drive motor (12) is installed at one end of the workbench (1); the drive motor (12) is used to drive the lead screw (111) to rotate. The workbench (1) has a clamping plate (131) and a strip groove (13) on its upper surface. A screw (132) is rotatably connected in the strip groove (13). The threads at both ends of the screw (132) are opposite. There are two clamping plates (131). The two clamping plates (131) are helically connected to the two ends of the screw (132). A connecting unit is installed in the workbench (1). The first lead screw (111) is connected to the screw (132) through the connecting unit. The operation panel (14) is installed on the workbench (1) at one end near the drive motor (12); a clamp (21) is installed on the upper end of the mounting bracket (2); the clamp (21) is used to clamp the connector (141); the end of the connector (141) away from the clamp (21) is connected to the operation panel (14) through a connecting line.

2. The test platform for large-scale energy storage converters according to claim 1, characterized in that: The clamping block (21) has circular grooves (211) on both sides; a clamping piece (212) is slidably connected in the circular groove (211); the clamping piece (212) is connected to the bottom of the circular groove (211) by a connecting spring (213).

3. A test platform for large-scale energy storage converters according to claim 2, characterized in that: The connecting unit includes a connecting rod (121); the output end of the drive motor (12) is provided with a square groove (122); the connecting rod (121) is slidably connected in the square groove (122); the connecting rod (121) and the bottom of the square groove (122) are connected by a push spring (123); an electromagnetic ring (124) is embedded in the bottom of the square groove (122); a bevel gear shaft (15) and a bevel gear disk (151) are rotatably connected in the worktable (1); the bevel gear shaft (15) and the screw (132) are connected by a belt drive (152); the first lead screw (111) has a first rectangular groove (113) and a second rectangular groove (114) that are interconnected at both ends; a rectangular rod (115) is slidably connected in the first rectangular groove (113); the rectangular rod (115) is connected to the bottom of the first rectangular groove (113) by a support spring (116); a sealing plate (117) is slidably connected in the second rectangular groove (114); a slot (153) that cooperates with the rectangular rod (115) is opened at the end of the bevel gear disk (151) near the first rectangular groove (113); a magnet (125) is embedded at the end of the connecting rod (121) near the drive motor (12).

4. A test platform for large-scale energy storage converters according to claim 3, characterized in that: A laser positioner (22) is embedded on the side of the clamp (21) away from the drive motor (12).

5. A test platform for large-scale energy storage converters according to claim 4, characterized in that: The mounting frame (2) is rotatably connected to a second lead screw (23); a mounting plate (231) is provided on one side of the mounting frame (2); the mounting plate (231) is screw-driven to the second lead screw (23); the clamp (21) is installed on the upper end of the mounting plate (231); a first helical gear (232) and a second helical gear (233) are installed inside the mounting frame (2); the first helical gear (232) is fixedly connected to the second lead screw (23); the second helical gear (233) is slidably connected to the guide rod (112); the guide rod (112) is belt-driven to the output shaft of the drive motor (12) via a belt (16).

6. A test platform for large-scale energy storage converters according to claim 5, characterized in that: The mounting plate (231) has a mounting groove (24) at its upper end; a No. 3 lead screw (241) is rotatably connected in the mounting groove (24); the No. 3 lead screw (241) is screw-driven to the clamping block (21); a servo motor (25) is installed on one side of the workbench (1); a transmission unit is installed between the No. 3 lead screw (241) and the servo motor (25); the servo motor (25) drives the No. 3 lead screw (241) to rotate through the transmission unit.

7. A test platform for large-scale energy storage converters according to claim 6, characterized in that: The transmission unit includes a straight rod (251); the straight rod (251) is rotatably connected to the worktable (1); the output shaft of the servo motor (25) is connected to the straight rod (251); a bevel gear shaft (252) is rotatably connected inside the mounting bracket (2); a first bevel gear ring (253) is provided below the bevel gear shaft (252); the first bevel gear ring (253) is slidably connected to the straight rod (251); a second bevel gear ring (254) is slidably connected to the surface of the bevel gear shaft (252); and a third lead screw... (241) A bevel gear disk (255) is fixedly connected to one end near the second bevel gear ring (254); the bevel gear disk (255) meshes with the second bevel gear ring (254); a cavity (256) is provided inside the mounting bracket (2), the second bevel gear ring (254) is slidably connected in the cavity (256), a buffer spring (257) is sleeved on the surface of the bevel gear shaft (252), one end of the buffer spring (257) is connected to the second bevel gear ring (254), and the other end is connected to the bottom of the cavity (256).

8. A test platform for large-scale energy storage converters according to claim 7, characterized in that: The output shaft surface of the drive motor (12) is provided with a groove (17) communicating with the square groove (122); a protrusion (171) is slidably sealed in the groove (17); and the inner ring wall of the belt (16) is provided with a meshing groove (161) that cooperates with the protrusion (171).

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