Battery BMS (Battery Management System) protection board performance detection device

Abstract

The invention discloses a battery BMS protection plate performance detection device, and relates to the technical field of protection plate performance detection, the battery BMS protection plate performance detection device comprises a machine body, and further comprises a machine cover fixedly connected to the top of the machine body and used for protecting a detection area, the top of the machine body is provided with an adjusting assembly used for adjusting a detection position, and the outer part of the adjusting assembly is provided with a detection head; the top of the machine body is provided with a conveying assembly for conveying a detection material, and the top of the machine cover is fixedly connected with a display for displaying detection data; a lifting assembly used for supporting a detection material to prevent the detection material from deforming is arranged in the machine body and comprises a U-shaped pipe fixedly connected to the top end in the machine body, and the front end and the rear end in the U-shaped pipe are slidably connected with an ejector rod and a push rod correspondingly. During detection, the BMS protection plate is lifted from the bottom through the supporting plate, so that the probability that the BMS protection plate deforms after being pressed down by the detection head is reduced, the BMS protection plate is ensured to be smooth in circuit and stable in signal transmission, and the accuracy of detection data is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of protection board performance detection, and particularly relates to a performance detection device for a battery BMS protection board. Background Art

[0002] ‌The BMS protection board is a key component in the battery management system, mainly used to manage and protect the safety and performance of the lithium battery pack. The primary task of the BMS protection board is to sense and measure various states of the battery, including key parameters such as voltage, current, temperature, as well as SOC and SOH. Additionally, when an abnormal situation occurs in the battery, the BMS protection board will quickly respond, send warning messages, and take protective measures, such as cutting off the charge and discharge circuits, to prevent further damage. To protect the battery health, it is necessary to ensure the stable performance of the BMS protection board.‌ The performance detection of the BMS protection board mainly includes overcharge protection, over-discharge protection, over-current protection, over-temperature protection, and short-circuit protection, etc. The performance detection of the BMS protection board is usually carried out by a fully automatic detection device. During the detection process, the BMS protection board to be detected is conveyed to the detection area by the conveying component, and then the detection head detects the BMS protection board.

[0003] However, during the detection process, since a downward pressure is applied to the BMS protection board after the detection head contacts it, and the BMS protection board is usually thin, and when being detected, the BMS protection board only rests on the conveying component at both sides, which makes the middle part of the BMS protection board in a suspended state. Therefore, when the BMS protection board is pressed during detection, it is prone to bending deformation.

[0004] After the BMS protection board is bent, it may cause circuit connection problems, resulting in an open circuit, or may damage the internal circuit and interfere with signal transmission, thus causing inaccurate detection data when the BMS protection board is detected and reducing the authority of the detection data. Summary of the Invention

[0005] The purpose of the present invention is to propose a performance detection device for a battery BMS protection board to solve the problem that the BMS protection board will be bent and deformed under pressure during traditional detection, resulting in an open circuit and affecting the accuracy of the detection result.

[0006] To achieve the above purpose, the present invention adopts the following technical scheme: A performance detection device for a battery BMS protection board, including a machine body, and further including a machine cover fixedly connected to the top of the machine body for protecting the detection area. The top of the machine body is provided with an adjustment component for adjusting the detection position, and a detection head is arranged outside the adjustment component. The top of the machine body is provided with a conveying component for conveying the detection material, and a display for displaying detection data is fixedly connected to the top of the machine cover; Inside the body, there is a lifting component for holding the test material to prevent it from deforming. The lifting component includes a U-shaped tube fixedly connected to the top end inside the body. At the front and rear ends inside the U-shaped tube, a top rod and a push rod are respectively slidably connected. At the top of the push rod, a force-bearing plate is fixedly connected. At the top of the top rod, a support plate is fixedly connected. At the bottom ends of the top rod and the push rod, pistons are fixedly connected.

[0007] As a further description of the above technical solution: The inside of the U-shaped tube is filled with air. The distance from the detection head to the topmost vertex of the upper end face of the BMS protection plate is the same as the distance from the support plate to the lower end face of the BMS protection plate. At the bottom of the front end of the U-shaped tube, an air release cylinder is fixedly connected, and a pressure valve is provided between the air release cylinder and the U-shaped tube.

[0008] As a further description of the above technical solution: The conveying component includes a conveying rail fixedly connected to the top of the body. On the side of the two conveying rails close to each other, a conveying groove is opened. In the middle of the conveying groove, a limiting block is fixedly connected, and on both sides inside the conveying groove, gears are movably connected. A toothed chain is engaged and connected between the two gears.

[0009] As a further description of the above technical solution: Inside the conveying rail, a steady stop component is provided. The steady stop component includes a movable groove opened inside the limiting block, and a top column is movably connected inside the movable groove. A spring is fixedly connected between the lower end of the top column and the movable groove.

[0010] As a further description of the above technical solution: The distance between adjacent teeth on the inner side of the toothed chain is greater than the diameter of the top column. The top of the top column is a spherical surface. The toothed chain is made of rubber material and has ductility.

[0011] As a further description of the above technical solution: Inside the conveying rail, a straightening component is also provided. The straightening component includes a first sliding groove opened inside the conveying groove. A straightening plate is slidably connected inside the first sliding groove, and sliders are fixedly connected to both sides of the straightening plate. Second sliding grooves are opened on both inner walls of the first sliding groove.

[0012] As a further description of the above technical solution: The slider is a cylinder. The second sliding groove is inclined upward and opened towards the closer end. The bottom surface of the straightening plate is lapped on the top of the toothed chain.

[0013] As a further description of the above technical solution: The adjusting assembly includes longitudinal moving shafts fixedly connected to both sides of the top of the machine body. A transverse moving shaft is movably connected between the two longitudinal moving shafts. A vertical moving shaft is movably connected to the outside of the transverse moving shaft. Stepping motors are provided between the longitudinal moving shaft and the transverse moving shaft and between the transverse moving shaft and the vertical moving shaft. The detection head is movably connected to the lower end of the vertical moving shaft.

[0014] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows: When the detection head moves downward, the rear part thereof will contact and press down the force-bearing plate, causing the force-bearing plate to push the push rod to slide inside the U-shaped tube, pushing the gas inside the U-shaped tube to move. Through the air pressure, the ejector rod is pushed upward, causing the ejector rod to push the support plate to move upward synchronously. When the detection head contacts the BMS protection plate, the support plate also forms a lift on the BMS protection plate from the bottom, thereby preventing the probability of deformation of the BMS protection plate after being pressed by the detection head, ensuring the smoothness of the BMS protection plate circuit, stable signal transmission, guaranteeing the accuracy of the detection data, and at the same time increasing the contact area of the BMS protection plate through the support plate, and preventing displacement of the BMS protection plate due to the pressure of the detection head on the upper part during the detection process, ensuring the stability of the BMS protection plate during the detection process. Description of the Drawings

[0015] Figure 1 Shows the overall structural schematic diagram provided by an embodiment of the present invention; Figure 2 Shows the internal structural schematic diagram provided by an embodiment of the present invention; Figure 3 Shows the structural schematic diagram of the lifting assembly provided by an embodiment of the present invention; Figure 4 Shows the partial structural schematic diagram of the conveying assembly provided by an embodiment of the present invention; Figure 5 Shows the one provided by an embodiment of the present invention Figure 4 Enlarged view at A in; Figure 6 Shows the partial structural schematic diagram of the stable stop assembly provided by an embodiment of the present invention; Figure 7 Shows the structural schematic diagram of the straightening assembly provided by an embodiment of the present invention.

[0016] Legend Explanation: 10. Machine body; 20. Adjusting assembly; 21. Longitudinal moving shaft; 22. Transverse moving shaft; 23. Vertical moving shaft; 24. Stepping motor; 30. Detection head; 40. Conveying assembly; 41. Conveying rail; 42. Conveying groove; 43. Limiting block; 44. Gear; 45. Tooth chain; 50. Hood; 60. Display; 70. Lifting assembly; 71. U-shaped tube; 72. Push rod; 73. Force-receiving plate; 74. Thrust rod; 75. Support plate; 76. Piston; 77. Air release cylinder; 78. Pressure valve; 80. Stable stop assembly; 81. Movable groove; 82. Spring; 83. Thrust post; 90. Centering assembly; 91. First chute; 92. Centering plate; 93. Slide block; 94. Second chute. Detailed implementation manner

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0018] As Figures 1-3 shown, a performance detection device for a battery BMS protection board provided by the present invention includes a body 10, and further includes a hood 50 fixedly connected to the top of the body 10 for protecting the detection area. A regulating assembly 20 for adjusting the detection position is provided on the top of the body 10, and a detection head 30 is provided outside the regulating assembly 20. The regulating assembly 20 includes longitudinal movement shafts 21 fixedly connected to both sides of the top of the body 10. A transverse movement shaft 22 is movably connected between the two longitudinal movement shafts 21. A vertical movement shaft 23 is movably connected to the outside of the transverse movement shaft 22. Stepping motors 24 are provided between the longitudinal movement shaft 21 and the transverse movement shaft 22 and between the transverse movement shaft 22 and the vertical movement shaft 23. The detection head 30 is movably connected to the lower end of the vertical movement shaft 23. A conveying assembly 40 for conveying the detection material is provided on the top of the body 10. The conveying assembly 40 includes a conveying rail 41 fixedly connected to the top of the body 10. Conveying grooves 42 are formed on the sides of the two conveying rails 41 close to each other. A limiting block 43 is fixedly connected to the middle of the conveying groove 42. And gears 44 are movably connected to both sides inside the conveying groove 42. A tooth chain 45 is meshed and connected between the two gears 44. A display 60 for displaying detection data is fixedly connected to the top of the hood 50; An internal part of the body 10 is provided with a lifting assembly 70 for supporting the detection material to prevent it from deforming. The lifting assembly 70 includes a U-shaped tube 71 fixedly connected to the inner top end of the body 10. A thrust rod 74 and a push rod 72 are respectively slidably connected to the front and rear ends inside the U-shaped tube 71. A force-receiving plate 73 is fixedly connected to the top of the push rod 72. A support plate 75 is fixedly connected to the top of the thrust rod 74. Pistons 76 are fixedly connected to the bottom ends of the thrust rod 74 and the push rod 72; The inside of the U-shaped tube 71 is filled with air. The distance from the detection head 30 to the topmost vertex of the upper end face of the BMS protection board is the same as the distance from the support plate 75 to the lower end face of the BMS protection board. The front bottom of the U-shaped tube 71 is fixedly connected to an air release cylinder 77, and a pressure valve 78 is provided between the air release cylinder 77 and the U-shaped tube 71.

[0019] Specifically, first, the BMS protection board to be detected is conveyed to the center above the machine body 10 through the conveying assembly 40. During conveying, the BMS protection board is first placed on the upper ends of the two tooth chains 45, and then the external motor drives the gear 44 to rotate. The rotation of the gear 44 drives the tooth chain 45 to rotate, thereby realizing the conveyance of the BMS protection board. When the BMS protection board is conveyed to the designated position, the position of the detection head 30 is adjusted through the adjustment assembly 20. The stepping motor 24 is used to control the horizontal movement shaft 22 to move back and forth on the surface of the vertical movement shaft 21, the vertical movement shaft 23 to move left and right on the surface of the horizontal movement shaft 22, and the detection head 30 to move up and down on the surface of the vertical movement shaft 23, so as to control the detection head 30 to align and contact with the welding point on the surface of the BMS protection board, and start the performance detection operation of the BMS protection board. During the detection process, the detection area is protected by the machine cover 50 to ensure the safety of the detection personnel. The data obtained after the detection is then displayed through the display 60. The detection personnel can intuitively judge whether the performance of the BMS protection board is qualified by observing the display 60; During the detection, since a downward pressure is applied to the BMS protection board after the detection head 30 contacts it, and the BMS protection board is usually thin, and only two sides of the BMS protection board are placed on the conveying assembly 40 during the detection, this makes the middle part of the BMS protection board in a suspended state. Therefore, when the BMS protection board is pressed during the detection, it is prone to bending deformation; after the BMS protection board is bent, it may cause circuit connection problems, resulting in a non-conducting circuit, or it may damage the internal circuit and interfere with signal transmission, thereby causing inaccurate detection data when the BMS protection board is detected and reducing the authority of the detection data; Based on this, when the adjusting component 20 controls the detection head 30 to move downward, the rear part of the detection head 30 will contact and press down the force-bearing plate 73, so that the force-bearing plate 73 pushes the push rod 72 to slide inside the U-shaped tube 71. Since the piston 76 is fixedly connected to the bottom of the push rod 72 and the top rod 74, the inside of the U-shaped tube 71 is in a sealed state. When the push rod 72 moves downward, it will push the gas inside the U-shaped tube 71 to move, thereby using air pressure to push the top rod 74 upward, so that the top rod 74 pushes the support plate 75 to move upward synchronously. Since the distance between the detection head 30 and the upper end surface of the BMS protection plate is the same as the distance between the support plate 75 and the lower end surface of the BMS protection plate, when the detection head 30 contacts the BMS protection plate, the support plate 75 also forms a lift on the BMS protection plate from the bottom, thus preventing the BMS protection plate from deforming when pressed by the detection head 30, ensuring smooth circuit of the BMS protection plate, stable signal transmission, guaranteeing the accuracy of detection data, and at the same time increasing the contact area of the BMS protection plate through the support plate 75, which can prevent the BMS protection plate from shifting due to the pressure of the detection head 30 on the upper part during the detection process, ensuring the stability of the BMS protection plate during the detection process; In addition, since various electrical components are generally connected to the top of the BMS protection plate, and the heights of the electrical components on BMS protection plates of different specifications are also different, while the bottom of the BMS protection plate is flat, when the support plate 75 contacts the bottom of the BMS protection plate, the detection head 30 still needs to move downward to contact the circuit on the surface of the BMS protection plate, so that the support plate 75 still needs to move upward. However, since the support plate 75 is blocked by the conveying component 40 when moving upward, the upward movement of the support plate 75 is blocked. For this reason, a deflation cylinder 77 is provided at the bottom of the U-shaped tube 71. When the upward movement of the support plate 75 is blocked, as the push rod 72 moves downward, the air pressure inside the U-shaped tube 71 increases to the critical value of the pressure valve 78, and the gas inside the U-shaped tube 71 enters the deflation cylinder 77 through the pressure valve 78 to complete pressure relief, thereby preventing the support plate 75 from continuously applying force to the BMS protection plate from the bottom and causing the BMS protection plate to deform upward. While completing the lift of the BMS protection plate, the safety of the BMS protection plate is also guaranteed, and through the deflation setting, when detecting BMS protection plates of different specifications, the lifting component 70 can be applied, improving the applicable range of the lifting component 70; In addition, it should be noted that during the detection, the BMS protection plate will be conveyed to the designated position, and the detection head 30 only needs to be finely adjusted according to the specifications of the BMS protection plate and the different positions of the circuit, without the need for large-scale adjustment using the adjusting component 20. Therefore, by setting the force-bearing plate 73 to increase the downward pressure range when the detection head 30 moves downward, the stable downward pressure of the push rod 72 can be guaranteed.

[0020] Such as Figures 4-7As shown in the figure, a steady-stop component 80 is provided inside the conveying rail 41. The steady-stop component 80 includes a movable slot 81 opened inside the limiting block 43, and a top column 83 is movably connected inside the movable slot 81. A spring 82 is fixedly connected between the lower end of the top column 83 and the movable slot 81; The distance between adjacent teeth on the inner side of the tooth chain 45 is greater than the diameter of the top column 83. The top of the top column 83 is a spherical surface. The tooth chain 45 is made of rubber material and has ductility; A rectifying component 90 is also provided inside the conveying rail 41. The rectifying component 90 includes a first sliding slot 91 opened inside the conveying slot 42. A rectifying plate 92 is slidably connected inside the first sliding slot 91. Sliders 93 are fixedly connected to both sides of the rectifying plate 92. Second sliding slots 94 are opened on both inner walls of the first sliding slot 91; The slider 93 is a cylinder. The second sliding slot 94 is inclined upwardly towards the closer end. The bottom surface of the rectifying plate 92 is lapped on the top of the tooth chain 45.

[0021] Specifically, after the BMS protection board is conveyed to the designated position, due to the instantaneous stop of the conveying component 40, it will cause the BMS protection board to displace under the action of inertia, which makes the originally set detection location change. If the position of the detection head 30 is not adjusted, it may lead to inaccurate detection results. However, the distance that the BMS protection board displaces due to inertial factors cannot be guaranteed to be consistent each time it stops. Therefore, it is necessary to frequently adjust the position of the detection head 30, which greatly reduces the detection efficiency; In view of this, a steady-stop component 80 is provided. When the gear 44 drives the tooth chain 45 to rotate, since the top of the top column 83 is a spherical surface, when the tooth on the inner side of the tooth chain 45 contacts the top of the top column 83, it will apply a downward pressure on the top column 83 through the spherical surface, causing the top column 83 to contract inside the movable slot 81. After the gear 44 and the tooth chain 45 stop rotating, the spring 82 is used to push the top column 83 to reset. Since the distance between adjacent teeth on the inner side of the tooth chain 45 is greater than the diameter of the top column 83, and the tooth chain 45 is made of rubber material and has ductility, after the top column 83 resets and moves upward, it will push the contact position with the tooth chain 45 to deform and move upward, causing the deformed area of the tooth chain 45 to drive the BMS protection board to move upward synchronously. Thus, the BMS protection board is held by the tooth chain 45 and the top wall of the conveying slot 42, preventing the BMS protection board from displacing due to inertia, enabling the BMS protection board to stay stably in the designated area after the conveying component 40 stops working, ensuring the stability of the detection by the detection head 30, and at the same time, there is no need to frequently adjust the position of the detection head 30, reducing the impact on the detection efficiency; It should be noted that when the tooth chain 45 is working, since the contact area with the top column 83 rotates and displaces quickly, the tooth chain 45 in the working state has no time to deform, and it can only deform under the push of the reset of the top column 83 after stopping working; In addition, when the tooth chain 45 is deformed and moved upward, it will also drive the straightening plate 92 on its top to move upward synchronously. When the straightening plate 92 moves upward, it slides in the second slide groove 94 through the slider 93. Since the second slide groove 94 is inclined upward toward the adjacent end, when the slider 93 slides in the second slide groove 94, the straightening plate 92 also follows the movement trajectory of the slider 93 to form an upward displacement in the direction of the BMS protection plate, thereby pushing the BMS protection plate to correct the position of the BMS protection plate, avoiding the displacement of the BMS protection plate due to vibration during transportation, further ensuring the stability of the detection head 30 during detection, and at the same time, there is no need to frequently adjust the position of the detection head 30, reducing the impact on the detection efficiency. In addition, the straightening plate 92 can also form a front and rear clamp for the BMS protection plate, which can prevent the upper part of the BMS protection plate from being displaced due to the pressure of the detection head 30 during the detection process, thereby ensuring the stability of the BMS protection plate during the detection process.

[0022] Working principle: First, the BMS protection board to be detected is conveyed to the center above the body 10 by the conveying component 40. During conveyance, the BMS protection board is first placed on the upper ends of the two tooth chains 45, and then the external motor drives the gear 44 to rotate. The rotation of the gear 44 drives the tooth chain 45 to rotate, thereby realizing the conveyance of the BMS protection board. When the BMS protection board is conveyed to the designated position, the position of the detection head 30 is adjusted by the adjustment component 20. The stepper motor 24 is used to control the horizontal movement axis 22 to move back and forth on the surface of the vertical movement axis 21, the vertical movement axis 23 to move left and right on the surface of the horizontal movement axis 22, and the detection head 30 to move up and down on the surface of the vertical movement axis 23, so as to control the detection head 30 to align and contact the welding point on the surface of the BMS protection board, and start the performance detection operation of the BMS protection board. When the adjustment component 20 controls the detection head 30 to move down, the rear part of the detection head 30 will contact and press down the force receiving plate 73, so that the force receiving plate 73 pushes the push rod 72 to slide inside the U-shaped tube 71. Since the piston 76 is fixedly connected to the bottom of the push rod 72 and the top rod 74, the inside of the U-shaped tube 71 is in a sealed state. When the push rod 72 moves down, it will push the gas inside the U-shaped tube 71 to move, so as to push the top rod 74 to move up by air pressure, so that the top rod 74 pushes the support plate 75 to move up synchronously. Since the distance between the detection head 30 and the upper end face of the BMS protection board is the same as the distance between the support plate 75 and the lower end face of the BMS protection board, when the detection head 30 contacts the BMS protection board, the support plate 75 also forms a lift on the BMS protection board from the bottom, thereby preventing the probability of deformation of the BMS protection board after being pressed by the detection head 30, ensuring the smoothness of the BMS protection board circuit, stable signal transmission, guaranteeing the accuracy of the detection data, and at the same time increasing the contact area of the BMS protection board through the support plate 75, which can prevent the BMS protection board from shifting due to the pressure of the detection head 30 on the upper part during the detection process, and guaranteeing the stability of the BMS protection board during the detection process. When the support plate 75 contacts the bottom of the BMS protection board, the detection head 30 still needs to move down to contact the circuit on the surface of the BMS protection board, so that the support plate 75 still needs to move up. However, since the BMS protection board is blocked by the conveying component 40 when moving up, the upward movement of the support plate 75 is blocked. For this reason, a deflation cylinder 77 is provided at the bottom of the U-shaped tube 71. When the upward movement of the support plate 75 is blocked, as the push rod 72 moves down, the air pressure inside the U-shaped tube 71 increases to the critical value of the pressure valve 78, and the gas inside the U-shaped tube 71 enters the deflation cylinder 77 through the pressure valve 78 to complete deflation, thereby preventing the support plate 75 from continuously applying force to the BMS protection board from the bottom and causing the BMS protection board to deform upward. While completing the lift of the BMS protection board, the safety of the BMS protection board is also guaranteed. And through the deflation setting, when detecting BMS protection boards of different specifications, the lifting component 70 can be applied, improving the applicable range of the lifting component 70. During the detection process, the detection area is protected by the machine cover 50 to ensure the safety of the detection personnel.The data obtained after detection is then displayed through the display 60. By observing the display 60, the tester can visually determine whether the performance of the BMS protection board is qualified.

[0023] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention should cover within the protection scope of the present invention by making equivalent substitutions or changes according to the technical solution and inventive concept of the present invention.

Claims

1. A performance detection device for a battery BMS protection board, comprising a body (10), characterized in that, It also includes a hood (50) fixedly connected to the top of the body (10) for protecting the detection area. A regulating component (20) for adjusting the detection position is provided at the top of the body (10), and a detection head (30) is provided outside the regulating component (20). A conveying component (40) for conveying the detection material is provided at the top of the body (10). A display (60) for displaying detection data is fixedly connected to the top of the hood (50). A lifting component (70) for holding the detection material to prevent it from deforming is provided inside the body (10). The lifting component (70) includes a U-shaped tube (71) fixedly connected to the inner top end of the body (10). A top rod (74) and a push rod (72) are respectively slidably connected to the front and rear ends inside the U-shaped tube (71). A force-bearing plate (73) is fixedly connected to the top of the push rod (72). A support plate (75) is fixedly connected to the top of the top rod (74). Pistons (76) are fixedly connected to the bottom ends of the top rod (74) and the push rod (72).

2. The performance detection device for a battery BMS protection board according to claim 1, wherein The inside of the U-shaped tube (71) is filled with air. The distance from the detection head (30) to the topmost vertex of the upper end face of the BMS protection plate is the same as the distance from the support plate (75) to the lower end face of the BMS protection plate. An air release cylinder (77) is fixedly connected to the bottom of the front end of the U-shaped tube (71), and a pressure valve (78) is provided between the air release cylinder (77) and the U-shaped tube (71).

3. The performance detection device for a battery BMS protection board according to claim 1, wherein The conveying component (40) includes a conveying rail (41) fixedly connected to the top of the body (10). Conveying grooves (42) are formed on the adjacent sides of the two conveying rails (41). A limiting block (43) is fixedly connected to the middle of the conveying groove (42), and gears (44) are movably connected to both sides inside the conveying groove (42). A tooth chain (45) is meshed and connected between the two gears (44).

4. The performance detection device for a battery BMS protection board according to claim 3, characterized in that A steady stop component (80) is provided inside the conveying rail (41). The steady stop component (80) includes a movable groove (81) formed inside the limiting block (43), and a top column (83) is movably connected inside the movable groove (81). A spring (82) is fixedly connected between the lower end of the top column (83) and the movable groove (81).

5. The performance detection device for a battery BMS protection board according to claim 4, characterized in that, The distance between adjacent teeth on the inner side of the tooth chain (45) is greater than the diameter of the top column (83). The top of the top column (83) is a spherical surface. The tooth chain (45) is made of rubber material and has ductility.

6. The performance detection device for a battery BMS protection board according to claim 5, wherein A straightening component (90) is also provided inside the conveying rail (41). The straightening component (90) includes a first sliding groove (91) formed inside the conveying groove (42). A straightening plate (92) is slidably connected inside the first sliding groove (91), and sliders (93) are fixedly connected to both sides of the straightening plate (92). Second sliding grooves (94) are formed on the inner walls of both sides of the first sliding groove (91).

7. A battery BMS protection board performance detection device according to claim 6, characterized in that, The slider (93) is cylindrical. The second sliding groove (94) is inclined upward towards the adjacent end. The bottom surface of the straightening plate (92) is lapped on the top of the tooth chain (45).

8. A performance detection device for a battery BMS protection board according to claim 1, characterized in that The adjustment assembly (20) includes longitudinal movement shafts (21) fixedly connected to both sides of the top of the machine body (10). A transverse movement shaft (22) is movably connected between the two longitudinal movement shafts (21). A vertical movement shaft (23) is movably connected to the outside of the transverse movement shaft (22). Stepping motors (24) are provided between the longitudinal movement shaft (21) and the transverse movement shaft (22) and between the transverse movement shaft (22) and the vertical movement shaft (23). The detection head (30) is movably connected to the lower end of the vertical movement shaft (23).

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