S-box testing system and testing method thereof

Abstract

This invention provides an S-BOX testing system and method for high-voltage control boxes in the field of vehicle batteries. The system utilizes a plug-in mechanism to achieve rapid connection and disconnection of high-voltage wire terminals and onboard high-voltage wiring terminals, replacing the tedious manual tightening of screws for fixing and disassembly, thus improving operational speed and safety. It also facilitates batch testing and increases testing efficiency. A data connector with a horizontal lead screw assembly facilitates automatic data connection between the high-voltage control box and the industrial control computer, enabling convenient data acquisition. The provided testing method automatically achieves high-voltage connection and data connectivity, improving the automation level of the testing operation and enhancing testing efficiency and safety compared to manual methods.

Description

Technical Field

[0001] This invention relates to the field of high-voltage control boxes for vehicle batteries, and particularly to an S-BOX testing system and its testing method. Background Technology

[0002] The high-voltage control box (S-BOX) can distribute high-voltage power to various actuators for driving, so as to coordinate the power conversion and energy distribution of electrical systems such as drive motor control, battery management, charging management, DC conversion, air conditioning, electric power steering, and braking. It can also realize safety functions such as battery short circuit protection, overload rapid power-off protection, and leakage protection.

[0003] After the high-voltage control box is manufactured, it needs to be tested. Traditional testing systems rely on manual connection of the high-voltage wire terminals to the onboard high-voltage wiring sheet inside the high-voltage control box. The terminals are then stably connected by tightening the locking screws before testing. Manual operation of the high voltage can only be performed when the power is off. Connecting the high-voltage terminals is not only cumbersome, but also requires repeatedly disassembling and tightening the screws when testing multiple high-voltage control boxes, which poses a safety hazard.

[0004] This application provides an S-BOX testing system and its testing method, which realizes the automated screwing connection and disassembly of high-voltage terminals. Summary of the Invention

[0005] The purpose of this application is to solve the problem that the traditional S-BOX test system requires manual connection of high-voltage terminals, which is cumbersome and poses safety hazards. Compared with the prior art, this application provides an S-BOX test system and its test method, which can realize the rapid connection and disassembly of high-voltage terminals, thereby improving testing efficiency and operational safety.

[0006] This invention discloses an S-BOX testing system, including an operating table. An insulating limiting plate for fixing a high-voltage control box body is installed on the operating table. A plug-in mechanism is provided above the high-voltage control box body. A high-voltage cable is fixed on the plug-in mechanism. The high-voltage cable is electrically connected to a high-low voltage adapter box. The high-low voltage adapter box is connected to an analog power supply and an EOL testing device via a cable. The plug-in mechanism, the high-low voltage adapter box, the analog power supply, and the EOL testing device are all electrically connected to an industrial control computer.

[0007] The plug-in mechanism includes a lifting frame mounted on the high-voltage control box body. A high-voltage terminal block, fixedly connected to the front end of a high-voltage cable, is fixedly connected below the lifting frame. The high-voltage control box body has an onboard high-voltage terminal block positioned opposite the high-voltage terminal block. Below the onboard high-voltage terminal block is a threaded cylinder fixedly connected to the high-voltage control box body. The lifting frame contains a set of symmetrically arranged plug-in components opposite to the threaded cylinder. Each plug-in component includes a locking screw that engages with the threaded cylinder and passes through the high-voltage terminal block. The locking screw is fitted with a lifting cylinder that slides vertically with the lifting frame. A limiting spring abuts against the lifting frame below the lifting cylinder. A fixed cylinder, fixedly connected to the inner wall of the lifting frame, is nested inside the lifting cylinder. A screwdriver bit, threadedly connected to the lower part of the fixed cylinder and engaging with the locking screw, is threaded into the lower part of the fixed cylinder. A prism rod is fixedly connected to the upper end of the screwdriver bit. A prism cylinder is fitted above the prism rod. The prism cylinder passes through the top plate of the fixed cylinder and is rotatably connected to the top plate of the lifting frame via a bearing seat. The prism cylinder is connected to a drive shaft via a transmission gear set. The drive shaft is connected to a first drive motor via a worm gear assembly.

[0008] Furthermore, the testing system also includes a data cable plug-in mechanism, which includes a data connector, a movable frame fixedly connected to the data connector, a sliding frame slidably connected to the movable frame, a horizontal lead screw assembly for driving the movable frame to move laterally inside the sliding frame, and a data interface opposite to the data connector on the high voltage control box body. The horizontal lead screw assembly is electrically connected to the industrial control computer via wires.

[0009] Preferably, the lifting cylinder has a cylindrical structure, the lifting frame has a rectangular box structure, the bottom plate of the lifting frame has a through hole for the lifting cylinder to slide up and down, the upper edge of the lifting cylinder has a protruding ring for limiting the limiting spring, and the fixed cylinder has a limiting ring that is opposite to the protruding ring.

[0010] Preferably, the bottom plate of the lifting cylinder has a first threaded hole that mates with the locking screw; the screwdriver bit is threadedly connected to the bottom plate of the fixed cylinder, the bottom plate of the fixed cylinder has a second threaded hole that mates with the screwdriver bit, and the outer wall of the screwdriver bit has threads that mate with the second threaded hole.

[0011] Preferably, the prism rod is a polygonal rod with a regular polygonal cross-section, and the prism tube has a prism groove for the prism rod to slide up and down, and the cross-section of the prism groove is a regular polygon.

[0012] Preferably, the lifting frame is connected to a vertical lead screw assembly, which includes a vertical lifting block fixedly connected to the rear end of the lifting frame, a vertical sliding frame slidably connected to the vertical lifting block, a vertical lead screw threadedly connected to the vertical lifting block inside the vertical sliding frame, and a vertical lead screw motor connected to the vertical lead screw.

[0013] Preferably, the insulating limiting plate is a flat plate made of insulating material, and multiple detachable limiting posts are inserted into the insulating limiting plate. The high-voltage control box body is provided with multiple insertion holes that cooperate with the limiting posts.

[0014] This invention also discloses a method for S-BOX testing, using an S-BOX testing system as described above, comprising the following steps: Step 1, removing the top cover of the high-voltage control box body and placing the high-voltage control box body on an insulating limiting plate for limiting and fixing; Step 2, starting the vertical screw motor of the vertical screw assembly via an industrial control computer, the vertical screw assembly moves the lifting frame downward, so that the locking screw passes through the onboard high-voltage terminal and is inserted into the threaded cylinder, and then starting the first drive motor to drive the locking screw downward, thereby abutting and fixing the high-voltage line terminal and the onboard high-voltage terminal through the locking screw and the threaded cylinder; Step 3, starting the high-low voltage adapter box, analog power supply and EOL testing equipment via an industrial control computer to test the high-voltage control box body; Step 4, after the test is completed, starting the first drive motor again via the industrial control computer to disengage the locking screw from the threaded cylinder, and then starting the vertical screw assembly to move the lifting frame upward, completely disengaging the locking screw from the high-voltage control box body, in preparation for the next test.

[0015] Preferably, in step one, the high-voltage control box body is fixed by inserting the limiting post through the limiting hole of the high-voltage control box body into the insulating limiting plate.

[0016] Preferably, in step two, the horizontal lead screw assembly is started by the industrial control computer, and the horizontal lead screw assembly drives the moving frame to insert the data connector into the data interface.

[0017] Compared with the prior art, the advantages of this invention are:

[0018] (1) The present invention realizes the quick connection and quick disassembly of high voltage line terminals and onboard high voltage wiring terminals through the plug-in mechanism, replacing the tedious operation of manually tightening and loosening screws, improving the speed and safety of operation, and at the same time, facilitating batch testing and improving testing efficiency.

[0019] (2) The present invention uses a lifting cylinder for fixing the locking screw and a screwdriver bit connected with a prism rod to drive the locking screw to rotate up and down by a motor, thereby realizing the screwing operation. It has a high degree of automation and facilitates the quick connection, fixing and disassembly of high voltage terminals.

[0020] (3) The present invention facilitates the automatic connection of the data cable between the high voltage control box and the industrial control computer by connecting the data connector with the horizontal lead screw assembly, which facilitates the acquisition of test data.

[0021] (4) The testing method provided by the present invention automatically realizes high voltage connection and data connection, improves the automation level of testing operations, and improves testing efficiency and testing safety compared with manual testing. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the operating console from the front view in this invention;

[0024] Figure 3 This is a three-dimensional structural diagram of the operating console from the rear view in this invention;

[0025] Figure 4 This is a three-dimensional structural diagram of the insertion mechanism in this invention;

[0026] Figure 5 This is a three-dimensional structural diagram of the high-voltage control box body in this invention;

[0027] Figure 6 This is a schematic diagram of the transverse cross-sectional structure of the insertion mechanism in this invention;

[0028] Figure 7 This is a cross-sectional view of the plug-in assembly in this invention;

[0029] Figure 8 for Figure 7 Enlarged structural diagram at point A;

[0030] Figure 9 This is a three-dimensional structural diagram of the plug-in component in this invention;

[0031] Figure 10 This is a schematic diagram of the assembly structure of the plug-in component in this invention;

[0032] Figure 11 This is a cross-sectional view of the data cable plug-in mechanism in this invention.

[0033] The following are the labeling instructions in the diagram: 1. Control panel; 2. Insulating limit plate; 3. High-voltage control box body; 301. Onboard high-voltage terminal block; 302. Data interface; 303. Threaded cylinder; 4. Plug-in mechanism; 5. High-low voltage adapter box; 6. Analog power supply; 7. EOL testing equipment; 8. Industrial computer; 9. Lifting frame; 10. Vertical lead screw assembly; 11. Plug-in assembly; 12. High-voltage line terminal; 13. High-voltage cable; 14. Locking screw; 15. Lifting cylinder; 16. Limit spring; 17. Screwdriver bit; 18. Fixed cylinder; 19. Prismatic rod; 20. Prismatic cylinder; 21. Drive shaft; 22. Worm gear assembly; 23. First drive motor; 24. Data cable plug-in mechanism; 25. Data connector; 26. Data cable; 27. Moving frame; 28. Sliding frame; 29. ​​Horizontal lead screw assembly. Detailed Implementation

[0034] The embodiments will be described clearly and completely with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0035] Example 1:

[0036] This invention provides an S-BOX testing system; please refer to [link / reference]. Figure 1-11 The system includes an operating console 1, on which an insulating limiting plate 2 for fixing the high-voltage control box body 3 is installed. A plug-in mechanism 4 is provided above the high-voltage control box body 3. A high-voltage cable 13 is fixed on the plug-in mechanism 4. The high-voltage cable 13 is electrically connected to a high-low voltage adapter box 5. The high-low voltage adapter box 5 is connected to an analog power supply 6 and an EOL test device 7 via cables. The plug-in mechanism 4, the high-low voltage adapter box 5, the analog power supply 6, and the EOL test device 7 are all electrically connected to an industrial control computer 8.

[0037] The plug-in mechanism 4 includes a lifting frame 9 mounted on the high-voltage control box body 3. A high-voltage wire terminal 12, which is fixedly connected to the front end of the high-voltage cable 13, is fixedly connected below the lifting frame 9. The high-voltage control box body 3 is provided with an onboard high-voltage terminal 301 opposite to the high-voltage wire terminal 12. A threaded cylinder 303, which is fixedly connected to the high-voltage control box body 3, is provided below the onboard high-voltage terminal 301. A set of symmetrically arranged plug-in components 11, which are opposite to the threaded cylinder 303, is provided inside the lifting frame 9. The plug-in component 11 includes a locking screw 14 that cooperates with the threaded cylinder 303 and passes through the high-voltage wire terminal 12. The locking screw 14 is sleeved and vertically slidably connected to the lifting frame 9. The lifting cylinder 15 is connected to the lifting frame 9. A limiting spring 16 abuts against the lifting cylinder 15 at its lower part. A fixed cylinder 18 is nested inside the lifting cylinder 15 and is fixedly connected to the inner wall of the lifting frame 9. A screwdriver bit 17 is threadedly connected to the lower part of the fixed cylinder 18, extending into the lifting cylinder 15 and engaging with the locking screw 14. A prism rod 19 is fixedly connected to the upper end of the screwdriver bit 17. A prism tube 20 is sleeved on the prism rod 19. The prism tube 20 passes through the top plate of the fixed cylinder 18 and is rotatably connected to the top plate of the lifting frame 9 through a bearing seat. The prism tube 20 is connected to a drive shaft 21 through a transmission gear set. The drive shaft 21 is connected to a first drive motor 23 through a worm gear assembly 22.

[0038] Specifically, during the testing of the high-voltage control box body 3, the first drive motor 23 is started. The first drive motor 23 drives the transmission shaft 21 to rotate through the worm gear assembly 22. The transmission shaft 21 drives the prism cylinder 20 to rotate through the transmission gear set. The prism cylinder 20 drives the prism rod 19 to rotate. The prism rod 19 drives the screwdriver bit 17 to rotate downward. The screwdriver bit 17 drives the locking screw 14 to rotate downward, so that the locking screw 14 passes through the high-voltage line terminal 12 and the onboard high-voltage wiring terminal 301 and is screwed into the threaded cylinder 303, thereby fixing and locking the high-voltage line terminal 12 and the onboard high-voltage wiring terminal 301. Then, the high-low voltage adapter box 5, the analog power supply 6 and the EOL test equipment 7 are turned on to test the high-voltage control box body 3.

[0039] After the test is completed, the first drive motor 23 is restarted, causing the first drive motor 23 to flip, thereby disengaging the locking screw 14 from the threaded cylinder 303 and the onboard high-voltage terminal 301. Then, the vertical lead screw assembly 10 is activated, causing the plug-in assembly 11 to completely disengage from the high-voltage control box body 3, facilitating the next test of the high-voltage control box body 3.

[0040] Please see Figure 7-10 In this embodiment, the lifting cylinder 15 is a cylindrical structure, the lifting frame 9 is a rectangular box structure, the bottom plate of the lifting frame 9 is provided with a through hole for the lifting cylinder 15 to slide up and down, the upper edge of the lifting cylinder 15 is provided with a protruding ring for limiting the limiting spring 16, and the fixed cylinder 18 is provided with a limiting ring that is opposite to the protruding ring.

[0041] Specifically, the limiting spring 16 keeps the locking screw 14 in contact with the screwdriver bit 17, ensuring that the locking screw 14 rotates up and down synchronously when the screwdriver bit 17 rotates.

[0042] In this embodiment, the bottom plate of the lifting cylinder 15 has a first threaded hole that mates with the locking screw 14.

[0043] Specifically, the displacement of the locking screw 14 is limited to ensure that it rotates up and down when it is tightened.

[0044] In this embodiment, the screwdriver bit 17 is threadedly connected to the base plate of the fixed cylinder 18. The base plate of the fixed cylinder 18 is provided with a second threaded hole that mates with the screwdriver bit 17, and the outer wall of the screwdriver bit 17 is provided with threads that mate with the second threaded hole.

[0045] Specifically, prevent the locking screw 14 from moving upwards excessively, ensuring that the screwdriver bit 17 rotates up and down.

[0046] In this embodiment, the prism rod 19 is a polygonal rod with a regular polygonal cross-section, and the prism tube 20 has a prism groove for the prism rod 19 to slide up and down. The cross-section of the prism groove is a regular polygon.

[0047] Specifically, when the prism tube 20 rotates, it drives the prism rod 19 to rotate, without affecting the screwdriver bit 17 driving the prism rod 19 to move up and down.

[0048] In this embodiment, the lifting frame 9 is connected to a vertical lead screw assembly 10. The vertical lead screw assembly 10 includes a vertical lifting block that is fixedly connected to the rear end of the lifting frame 9. The vertical lifting block is slidably connected to a vertical sliding frame. The vertical sliding frame is provided with a vertical lead screw that is threadedly connected to the vertical lifting block. The vertical lead screw is connected to a vertical lead screw motor.

[0049] Specifically, the vertical screw assembly 10 drives the lifting frame 9 to move up and down, facilitating the contact between the locking screw 14 and the onboard high-voltage terminal 301.

[0050] Please see Figure 4 and Figure 5 In this embodiment, the insulating limiting plate 2 is a flat plate made of insulating material, and multiple detachable limiting posts are inserted into the insulating limiting plate 2. The high voltage control box body 3 is provided with multiple insertion holes that cooperate with the limiting posts.

[0051] Specifically, it facilitates the insertion and fixing of the high-voltage control box body 3, while also adapting to the fixing limits of high-voltage control box bodies 3 of different specifications and sizes.

[0052] This invention also provides a method for S-BOX testing, comprising the following steps:

[0053] Step 1: Remove the top cover of the high voltage control box body 3 and place the high voltage control box body 3 on the insulating limit plate 2 for limiting and fixing.

[0054] Step 2: Start the vertical screw motor of the vertical screw assembly 10 via the industrial control computer 8. The vertical screw assembly 10 moves the lifting frame 9 downward, so that the locking screw 14 passes through the onboard high voltage terminal 301 and is inserted into the threaded cylinder 303. Then start the first drive motor 23 to drive the locking screw 14 to rotate downward. The high voltage terminal 12 and the onboard high voltage terminal 301 are abutted and fixed by the locking screw 14 and the threaded cylinder 303.

[0055] Step 3: Use the industrial control computer 8 to start the high and low voltage adapter box 5, the analog power supply 6 and the EOL test equipment 7 to test the high voltage control box body 3;

[0056] Step 4: After the test is completed, the first drive motor 23 is restarted again by the industrial control computer 8, so that the locking screw 14 is disengaged from the threaded cylinder 303. Then, the vertical screw assembly 10 is started, so that the lifting frame 9 drives the locking screw 14 to move upward, completely disengaging it from the high-voltage control box body 3, in preparation for the next test.

[0057] In this embodiment, in step one, the high voltage control box body 3 is fixed by inserting the limiting post through the limiting hole of the high voltage control box body 3 into the insulating limiting plate 2.

[0058] Specifically, the operation is simple. Through the plug-in mechanism 4, there is no need for manual high-voltage connection, which improves the safety and speed of operation and increases testing efficiency.

[0059] Example 2:

[0060] The difference between this embodiment and embodiment 1 is that the test system also includes a data cable plug-in mechanism 24. The data cable plug-in mechanism 24 includes a data connector 25. The data connector 25 is fixedly connected to a movable frame 27. The movable frame 27 is slidably connected to a sliding frame 28. The sliding frame 28 is provided with a horizontal lead screw assembly 29 that drives the movable frame 27 to move laterally. The high-voltage control box body 3 is provided with a data interface 302 that is opposite to the data connector 25. The horizontal lead screw assembly 29 is electrically connected to the industrial control computer 8 through a wire.

[0061] Specifically, by activating the horizontal lead screw assembly 29, the moving frame 27 drives the data connector 25 to be inserted into the data interface 302, thereby achieving a quick connection of the data connector 25.

[0062] In this embodiment, the data connector 25 is electrically connected to the industrial computer 8 via the data cable 26.

[0063] Specifically, it facilitates the transmission of data from the high-voltage control box 3 back to the industrial control computer 8.

[0064] The present invention also provides a method for S-BOX testing, which differs from Embodiment 1 in that: in step two, the horizontal lead screw assembly 29 is started by the industrial control computer 8, and the horizontal lead screw assembly 29 drives the moving frame 27 to drive the data connector 25 to be inserted into the data interface 302.

[0065] Specifically, it facilitates quick and easy data connection and data transmission.

[0066] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto.

Claims

1. An S-BOX testing system, characterized in that, The system includes an operating console (1), on which an insulating limiting plate (2) is installed to fix the high voltage control box body (3). A plug-in mechanism (4) is provided above the high voltage control box body (3). A high voltage cable (13) is fixed on the plug-in mechanism (4). The high voltage cable (13) is electrically connected to a high-low voltage adapter box (5). The high-low voltage adapter box (5) is connected to an analog power supply (6) and an EOL test device (7) via a cable. The plug-in mechanism (4), the high-low voltage adapter box (5), the analog power supply (6) and the EOL test device (7) are all electrically connected to an industrial computer (8). The plug-in mechanism (4) includes a lifting frame (9) mounted on the high-voltage control box body (3). A high-voltage wire terminal (12) fixedly connected to the front end of the high-voltage cable (13) is fixedly connected below the lifting frame (9). The high-voltage control box body (3) is provided with an onboard high-voltage terminal block (301) opposite to the high-voltage wire terminal block (12). A threaded cylinder (303) fixedly connected to the high-voltage control box body (3) is provided below the onboard high-voltage terminal block (301). A set of symmetrically arranged plug-in components (11) is provided inside the lifting frame (9) and opposite to the threaded cylinder (303). The plug-in component (11) includes a locking screw (14) that cooperates with the threaded cylinder (303) and passes through the high-voltage wire terminal block (12). The locking screw (14) is sleeved and vertically slidably connected to the lifting frame (9). A lifting cylinder (15) is provided, with a limiting spring (16) abutting against the lifting frame (9) at the bottom of the lifting cylinder (15); a fixed cylinder (18) is nested inside the lifting cylinder (15) and fixedly connected to the inner wall of the lifting frame (9); a screwdriver bit (17) is threadedly connected to the lower part of the fixed cylinder (18) and extends into the lifting cylinder (15) and is engaged with the locking screw (14); a prism rod (19) is fixedly connected to the upper end of the screwdriver bit (17); a prism tube (20) is sleeved on the prism rod (19); the prism tube (20) passes through the top plate of the fixed cylinder (18) and is rotatably connected to the top plate of the lifting frame (9) through a bearing seat; the prism tube (20) is connected to a drive shaft (21) through a transmission gear set; the drive shaft (21) is connected to a first drive motor (23) through a worm gear assembly (22).

2. The S-BOX testing system according to claim 1, characterized in that, The test system also includes a data cable plug-in mechanism (24), which includes a data connector (25). The data connector (25) is fixedly connected to a movable frame (27), and the movable frame (27) is slidably connected to a sliding frame (28). The sliding frame (28) is provided with a horizontal lead screw assembly (29) that drives the movable frame (27) to move laterally. The high voltage control box body (3) is provided with a data interface (302) that is opposite to the data connector (25). The horizontal lead screw assembly (29) is electrically connected to the industrial control computer (8) through a wire.

3. The S-BOX testing system according to claim 1, characterized in that, The lifting cylinder (15) is a cylindrical structure, and the lifting frame (9) is a rectangular box structure. The bottom plate of the lifting frame (9) has a through hole for the lifting cylinder (15) to slide up and down. The upper edge of the lifting cylinder (15) is provided with a protruding ring for limiting the limiting spring (16), and the fixed cylinder (18) is provided with a limiting ring that is opposite to the protruding ring.

4. The S-BOX testing system according to claim 1, characterized in that, The bottom plate of the lifting cylinder (15) has a first threaded hole that mates with the locking screw (14); the screwdriver bit (17) is threadedly connected to the bottom plate of the fixed cylinder (18), the bottom plate of the fixed cylinder (18) has a second threaded hole that mates with the screwdriver bit (17), and the outer wall of the screwdriver bit (17) has a thread that mates with the second threaded hole.

5. The S-BOX testing system according to claim 1, characterized in that, The prism rod (19) is a polygonal rod with a regular polygonal cross-section. The prism tube (20) has a prism groove for the prism rod (19) to slide up and down. The cross-section of the prism groove is a regular polygon.

6. The S-BOX testing system according to claim 2, characterized in that, The lifting frame (9) is connected to a vertical screw assembly (10). The vertical screw assembly (10) includes a vertical lifting block that is fixedly connected to the rear end of the lifting frame (9). The vertical lifting block is slidably connected to a vertical sliding frame. The vertical sliding frame is provided with a vertical screw threadedly connected to the vertical lifting block. The vertical screw is connected to a vertical screw motor.

7. The S-BOX testing system according to claim 6, characterized in that, The insulating limiting plate (2) is a flat plate made of insulating material. Multiple detachable limiting posts are inserted into the insulating limiting plate (2). Multiple insertion holes that cooperate with the limiting posts are provided on the high voltage control box body (3).

8. A method for S-BOX testing, characterized in that, The testing using the S-BOX testing system as described in claim 7 includes the following steps: Step 1: Remove the top cover of the high voltage control box body (3) and place the high voltage control box body (3) on the insulating limit plate (2) for limiting and fixing. Step 2: Start the vertical screw motor of the vertical screw assembly (10) via the industrial control computer (8). The vertical screw assembly (10) moves the lifting frame (9) downward, so that the locking screw (14) passes through the onboard high voltage terminal (301) and is inserted into the threaded cylinder (303). Then start the first drive motor (23) to drive the locking screw (14) to rotate downward. The high voltage terminal (12) and the onboard high voltage terminal (301) are abutted and fixed by the locking screw (14) and the threaded cylinder (303). Step 3: Use the industrial computer (8) to start the high and low voltage adapter box (5), the analog power supply (6) and the EOL test equipment (7) to test the high voltage control box body (3); Step 4: After the test is completed, the first drive motor (23) is restarted again by the industrial control computer (8) so that the locking screw (14) is disengaged from the threaded cylinder (303). Then the vertical screw assembly (10) is started so that the lifting frame (9) drives the locking screw (14) to move upward and completely disengage from the high-voltage control box body (3) in preparation for the next test.

9. A method for S-BOX testing according to claim 8, characterized in that, In step one, the high voltage control box body (3) is fixed by inserting the limiting post through the limiting hole of the high voltage control box body (3) into the insulating limiting plate (2).

10. A method for S-BOX testing according to claim 8, characterized in that, In step two, the horizontal lead screw assembly (29) is started by the industrial control computer (8), and the horizontal lead screw assembly (29) drives the moving frame (27) to drive the data connector (25) to be inserted into the data interface (302).

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