A welding result detection device for new energy lithium battery pack

Abstract

The application is suitable for the technical field of lithium battery pack processing, and provides a welding result detection device for new energy lithium battery pack, which comprises a base, a placing plate for placing the battery pack arranged on the base, a detection probe arranged in a moving box, a guide rail arranged on the base for driving the moving box to move, a blocking unit arranged on the moving box for blocking the detection probe from the outside, and a dust removal assembly arranged in the moving box for dust removal of the detection probe. Through the cooperation of the blocking unit and the dust removal assembly, the detection probe is closed during the non-detection period, and the contact of pollutants is reduced from the source. The dust removal assembly adopts a blowing and dust removal dual cleaning mode to timely remove floating dust and stubborn attachments on the lens surface, effectively avoids the problems of laser light path attenuation and imaging blur, greatly improves the detection accuracy and stability, and ensures the accurate and reliable judgment of the welding quality of the lithium battery pack.

Description

Technical Field

[0001] This invention belongs to the technical field of lithium battery pack processing, and in particular relates to a welding result detection device for new energy lithium battery packs. Background Technology

[0002] A battery pack is a power supply device formed by combining multiple individual cells in series or parallel. Using zinc-copper electrodes and electrolytes, it creates the initial battery stack, laying the foundation for the development of equipment such as electric motors and generators. Parallel battery packs require consistent voltage among individual cells to increase output current, while series structures can meet the requirements of high-voltage equipment by superimposing voltages.

[0003] In the manufacturing and assembly of lithium battery packs, the welding process is a critical step that determines the reliability of the battery pack connections and its safety in use. To ensure welding quality, laser probes are typically used to inspect the welding points to identify problems such as incomplete welds, missing welds, misaligned welds, cracks, and surface defects. However, existing welding inspection devices still have significant shortcomings in practical applications: The optical lens of the laser probe is easily affected by the adhesion and obstruction of contaminants such as welding spatter, dust, and oil in the workshop environment, which leads to laser light path attenuation and image blurring, directly reducing the detection accuracy and stability, and thus affecting the accurate judgment of welding quality. Based on this, a welding result detection device for new energy lithium battery packs is proposed to solve the above problems. Summary of the Invention

[0004] This invention provides a welding result detection device for new energy lithium battery packs, aiming to solve the problem that the optical lens of the laser probe is easily affected by the adhesion and obstruction of contaminants such as welding spatter, dust, and oil in the workshop environment, which leads to laser light path attenuation and image blurring, directly reducing the detection accuracy and stability, and thus affecting the accurate judgment of welding quality.

[0005] The present invention is implemented as follows: a welding result detection device for new energy lithium battery packs, comprising: a base on which a placement plate for placing the battery pack is provided; a detection probe disposed in a movable housing; a guide rail on the base for moving the movable housing; an isolation unit disposed on the movable housing for isolating the detection probe from the outside environment; and a dust removal component disposed in the movable housing for dust removal of the detection probe.

[0006] Preferably, the placement plate is a rotating plate, used to drive the battery pack to rotate for testing.

[0007] Preferably, the barrier unit includes: a barrier plate inserted into the movable housing, the movable housing having an opening, a movable rod fixedly connected to the side of the barrier plate, a first connecting rod fixedly connected to the movable housing, the first connecting rod passing through the movable rod, a limiting plate fixedly connected to the end of the first connecting rod, the limiting plate being connected to the movable rod via a first spring for providing elastic force, the first spring being sleeved on the outside of the first connecting rod, and an adjusting plate fixedly connected to the base, the adjusting plate having symmetrically arranged adjusting slopes.

[0008] Preferably, the dust removal assembly includes a dust blowing unit for blowing dust off the detection probe, and a dust removal unit for removing dust from the detection probe.

[0009] Preferably, the dust blowing unit includes a first movable block inserted into the movable housing, a first movable plate fixedly connected to its side, a first guide rod fixedly connected to the movable housing, the first guide rod passing through the first movable plate, the first movable plate being connected to the first movable plate via a second spring for providing elasticity, the second spring being sleeved on the outside of the first guide rod, a pressing block fixedly connected to the side of the first movable block, a connecting cavity fixedly connected to the movable housing, an elastic ball fixedly connected to the connecting cavity, the connecting cavity being connected to the dust blowing nozzle via a connecting hose, the dust blowing nozzle being connected to the first guide rod via a first rotating shaft, and an array of adjusting blocks fixedly connected to the adjusting plate, the adjusting blocks having symmetrically arranged first inclined surfaces.

[0010] Preferably, an angle adjusting sleeve is provided on the outer side of the first rotating shaft, a first curved surface is provided on the first moving block, and a second curved surface is provided on the extrusion block.

[0011] Preferably, the dust removal unit includes a second movable block inserted into the movable housing, a second movable plate fixedly connected to its side, a second guide rod fixedly connected to the movable housing, the second guide rod passing through the second movable plate, the second movable plate being connected to the second movable plate via a third spring for providing elasticity, the third spring being sleeved on the outside of the second guide rod, a movable plate fixedly connected to the side of the second movable block, a first connecting block fixedly connected to the side of the movable plate, a dust removal brush disposed in the movable housing, the dust removal brush being connected to the third movable block, the third movable block being connected to the second connecting block via a connecting unit, a third connecting block fixedly connected to the side of the second connecting block, a second inclined surface disposed on the first connecting block, a third inclined surface disposed on the third connecting block, a first snap-fit ​​groove disposed on the second inclined surface, and a first snap-fit ​​protrusion fixedly connected to the third inclined surface.

[0012] Preferably, the second moving block is provided with a third curved surface.

[0013] Preferably, the connecting unit includes a fourth connecting block with a second snap-fit ​​groove inside. The fourth connecting block is fixedly connected to the second connecting block. The third moving block is inserted into the second snap-fit ​​groove. Symmetrically arranged connecting plates are fixedly connected to the side of the third moving block. The connecting plates are connected to the second snap-fit ​​groove through a fourth spring for providing elasticity. A slot is opened in the fourth connecting block. A plug rod is fixedly connected to the inner wall of the moving box. A second snap-fit ​​protrusion is fixedly connected to the end of the plug rod.

[0014] Compared with the prior art, the embodiments of this application have the following advantages: through the coordinated cooperation of the blocking unit and the dust removal component, the blocking unit seals the detection probe during non-detection periods, reducing the contact of pollutants from the source; the dust removal component removes floating dust and stubborn deposits on the lens surface in a timely manner through a dual cleaning method of blowing and dust removal, effectively avoiding the problems of laser light path attenuation and image blurring, greatly improving detection accuracy and stability, and ensuring accurate and reliable judgment of the welding quality of lithium battery packs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the welding result detection device for new energy lithium battery packs provided by the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the welding result detection device for new energy lithium battery packs provided by the present invention. Figure 2 ; Figure 3 yes Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic cross-sectional view of a welding result detection device for new energy lithium battery packs provided by the present invention. Figure 1 ; Figure 5 This is a schematic cross-sectional view of a welding result detection device for new energy lithium battery packs provided by the present invention. Figure 2 ; Figure 6 yes Figure 5 Enlarged structural diagram at point B; Figure 7 This is a schematic cross-sectional view of a welding result detection device for new energy lithium battery packs provided by the present invention. Figure 3 .

[0016] Figure reference numerals: 1. Base; 2. Placement plate; 3. Detection probe; 4. Barrier plate; 5. Opening; 6. Moving rod; 7. First connecting rod; 8. Limiting plate; 9. First spring; 10. Adjusting plate; 11. Adjusting inclined surface; 12. First moving block; 13. First moving plate; 14. First guide rod; 15. Second spring; 16. Squeezing block; 17. Connecting cavity; 18. Elastic ball; 19. Connecting hose; 20. Dust blowing nozzle; 21. First rotating shaft; 22. Adjusting block; 23. First inclined surface; 24. Angle adjusting sleeve; 25. First curved surface; 26. Second curved surface; 27. Second moving block; 28. Second moving plate; 29. ​​Second guide rod; 30. Third spring; 31. Moving plate; 32. First connecting block; 33. Dust removal brush; 34. Third moving block; 35. Third connecting block; 36. Second inclined surface; 37. Third inclined surface; 38. First snap-fit ​​groove; 39. First snap-fit ​​protrusion; 40. Third curved surface; 41. Fourth connecting block; 42. Second snap-fit ​​groove; 43. Connecting plate; 44. Fourth spring; 45. Slot; 46. Insert rod; 47. Second snap-fit ​​protrusion; 48. Guide rail; 49. Moving housing; 50. Second connecting block. Detailed Implementation

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0018] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0019] This invention provides a welding result detection device for new energy lithium battery packs, such as... Figure 1-7 As shown, it includes: base 1, placement plate 2, detection probe 3, movable box 49, guide rail 48, barrier unit, and dust removal assembly. The specific arrangement and cooperation of each component are as follows: The base 1 serves as the mounting foundation for the entire device and is made of high-strength metal to ensure the overall stability of the device and prevent vibration from affecting testing accuracy during the testing process. A placement plate 2 for placing the battery pack is fixedly mounted on the base 1. The placement plate 2 is bolted to the base 1, ensuring a secure connection and facilitating disassembly and maintenance. The upper surface of the placement plate 2 is equipped with an anti-slip pad to effectively prevent displacement of the lithium battery pack during testing, providing a stable support platform for the battery pack and ensuring accurate alignment of the testing points.

[0020] The detection probe 3 is a laser detection probe, which is fixedly installed inside the movable housing 49. The detection end of the detection probe 3 faces the placement plate 2 and is used to perform laser scanning detection on the welding points of the lithium battery pack. It can accurately identify welding problems such as cold solder joints, missing solder joints, weld misalignment, cracks, and surface defects. The detection signal can be transmitted to an external control terminal to realize real-time display and recording of the detection results. A guide rail 48 is fixedly installed on the base 1 along its length. The guide rail 48 and the movable housing 49 are slidably fitted together. The guide rail 48 is provided with a guide groove, and the bottom of the movable housing 49 is provided with a guide block adapted to the guide groove to ensure that the movable housing 49 moves smoothly along the guide rail 48 and avoids deviation. The guide rail 48 can be driven by a servo motor to drive the movable housing 49 to move at a constant speed along a preset path, so that the detection probe 3 can scan all the welding points to be detected on the battery pack in sequence, realizing full-point automated detection without the need for manual movement of the detection probe 3, thus improving detection efficiency.

[0021] The barrier unit is installed on the movable housing 49 to isolate the detection probe 3 from the external environment, reducing contact between the detection probe 3 and contaminants such as welding spatter, dust, and oil. The barrier unit includes: a barrier plate 4, a moving rod 6, a first connecting rod 7, a limiting plate 8, a first spring 9, and an adjusting plate 10. The specific connections and working principles of each component are as follows: The barrier plate 4 is made of transparent and wear-resistant material and is inserted into the movable housing 49. The movable housing 49 has an opening 5 corresponding to the optical path of the detection probe 3. The size of the barrier plate 4 is adapted to the size of the opening 5, which is used to open or block the opening 5 without affecting the light path transparency during normal detection by the detection probe 3, while also blocking contaminants. A movable rod 6 is fixedly connected to the side of the barrier plate 4 by welding. The movable rod 6 is horizontally set. A first connecting rod 7 is fixedly connected to the movable housing 49 by bolts. The first connecting rod 7 is perpendicular to the movable rod 6 and passes through a through hole in the movable rod 6 to form a sliding fit, allowing the movable rod 6 to slide axially along the first connecting rod 7. A limit plate 8 is fixedly connected to the end of the first connecting rod 7 by welding. The size of the limit plate 8 is larger than the size of the through hole in the movable rod 6, which is used to limit the sliding stroke of the movable rod 6 and prevent the movable rod 6 from falling off the first connecting rod 7. The limiting plate 8 is connected to the moving rod 6 via a first spring 9 that provides elastic force. The first spring 9 is sleeved on the outside of the first connecting rod 7. One end of the first spring 9 is welded and fixed to the limiting plate 8, and the other end is welded and fixed to the moving rod 6. Under normal conditions, the first spring 9 is in a naturally extended state, providing elastic force to the moving rod 6 in the direction of the detection probe 3, keeping the barrier plate 4 in a closed state, blocking the opening 5 of the moving box 49, and forming protection for the detection probe 3.

[0022] An adjusting plate 10 is bolted to the base 1. The adjusting plate 10 is arranged along the length of the guide rail 48. The adjusting plate 10 has symmetrically arranged adjusting inclined surfaces 11, and the inclination angle of the adjusting inclined surfaces 11 is adapted to the movement trajectory of the moving rod 6. When the moving housing 49 moves along the guide rail 48 to the position of the adjusting plate 10, the end of the moving rod 6 contacts the adjusting inclined surface 11. As the moving housing 49 continues to move, the adjusting inclined surface 11 generates a horizontal squeezing force on the moving rod 6, causing the moving rod 6 to slide along the first connecting rod 7 away from the detection probe 3, while compressing the first spring 9. During the sliding process, the moving rod 6 drives the barrier plate 4 to move synchronously, causing the barrier plate 4 to gradually separate from the opening 5 of the moving housing 49, opening the opening 5, exposing the light path of the detection probe 3, and entering the detection state. When the moving housing 49 completes the detection of the area, continues to move along the guide rail 48 and leaves the area of ​​the adjusting plate 10, the squeezing force of the adjusting inclined plane 11 on the moving rod 6 disappears, the first spring 9 resets under its own elastic force, and drives the moving rod 6 to slide towards the detection probe 3, thereby driving the blocking plate 4 to reset and re-seal the opening 5 of the moving housing 49, realizing automatic blocking protection of the detection probe 3. No additional electric control drive is required, the structure is simple and the operation is reliable.

[0023] The dust removal assembly is housed within the movable housing 49 and is used to perform dust removal on the detection probe 3, promptly removing contaminants adhering to the lens surface of the detection probe 3 to ensure the detection accuracy of the detection probe 3. The dust removal assembly includes a blowing unit and a dust removal unit. The blowing unit uses airflow to sweep away floating dust and loose welding spatter particles from the lens surface of the detection probe 3, achieving initial cleaning. The dust removal unit uses contact cleaning to remove firmly adhered dust and minor oil stains from the lens surface. The two units work together to achieve multi-stage cleaning of the lens of the detection probe 3, ensuring effective cleaning.

[0024] The dust blowing unit includes a first moving block 12, a first moving plate 13, a first guide rod 14, a second spring 15, a squeezing block 16, a connecting cavity 17, an elastic ball 18, a connecting hose 19, a dust blowing nozzle 20, a first rotating shaft 21, and an adjusting block 22. The specific connections and working principles of each component are as follows: The first movable block 12 is inserted into a groove inside the movable housing 49 and can slide horizontally along the groove. A first movable plate 13 is fixedly connected to the side of the first movable block 12 by welding. A first guide rod 14 is fixedly connected to the movable housing 49 by bolts. The first guide rod 14 is horizontally arranged and consistent with the sliding direction of the first movable block 12. The first guide rod 14 passes through a guide hole on the first movable plate 13 to form a sliding guide, ensuring that the first movable plate 13 drives the first movable block 12 to slide smoothly and avoid deviation. The first movable plate 13 is connected to the inner wall of the movable housing 49 by a second spring 15 for providing elasticity. The second spring 15 is sleeved on the outside of the first guide rod 14. One end of the second spring 15 is welded to the first movable plate 13 and the other end is welded to the inner wall of the movable housing 49. Under normal conditions, the second spring 15 is in a naturally extended state, keeping the first movable block 12 in its initial position.

[0025] A compression block 16 is welded to the side of the first movable block 12. The compression block 16 has an arc-shaped structure. A connecting cavity 17 is bolted to the inside of the movable housing 49. The connecting cavity 17 is a sealed cavity pre-filled with high-pressure gas. An elastic ball 18 is fixedly connected to the connecting cavity 17. The elastic ball 18 is made of elastic rubber and communicates with the inside of the connecting cavity 17. When compressed, the elastic ball 18 can deform and squeeze out the high-pressure gas inside the connecting cavity 17. The connecting cavity 17 is connected to the dust blowing nozzle 20 through a connecting hose 19. The connecting hose 19 is made of flexible material and can adapt to the angle adjustment of the dust blowing nozzle 20. The outlet of the dust blowing nozzle 20 faces the lens of the detection probe 3 and is used to blow air to clean the lens. The dust blowing nozzle 20 is rotatably connected to the first guide rod 14 via the first rotating shaft 21. The first rotating shaft 21 is fixedly connected to the dust blowing nozzle 20 and rotates in cooperation with the first guide rod 14, so that the dust blowing nozzle 20 can rotate around the first rotating shaft 21 to adjust the blowing angle.

[0026] The adjusting plate 10 is fixedly connected to an array of adjusting blocks 22 by bolts. The adjusting blocks 22 are evenly distributed along the length of the adjusting plate 10. The adjusting blocks 22 are provided with symmetrically arranged first inclined surfaces 23. The inclination angle of the first inclined surfaces 23 is adapted to the movement trajectory of the first moving block 12. When the movable housing 49 moves along the guide rail 48, the end of the first movable block 12 contacts the first inclined surface 23 of the adjusting block 22. As the movable housing 49 continues to move, the first inclined surface 23 generates a horizontal squeezing force on the first movable block 12, causing the first movable block 12 to slide along the slide groove. At the same time, it drives the first movable plate 13 to slide and compress the second spring 15. During the sliding process of the first movable block 12, it drives the squeezing block 16 to move synchronously. The squeezing block 16 contacts the elastic ball 18 and generates a squeezing force on it, causing the elastic ball 18 to deform. The high-pressure gas inside the connecting cavity 17 is transported to the dust blowing nozzle 20 through the connecting hose 19. The dust blowing nozzle 20 sprays out the high-pressure gas to form a directional blowing airflow to blow dust off the lens surface of the detection probe 3 and remove floating dust and loose particles. As the moving housing 49 continues to move, after the first moving block 12 disengages from the first inclined surface 23 of the adjusting block 22, the second spring 15 resets under its own elastic force, causing the first moving block 12 and the squeezing block 16 to reset, the elastic ball 18 to return to its original state, and the connecting cavity 17 to re-inhale air, preparing for the next dust blowing, thus realizing intermittent automatic dust blowing as the device moves.

[0027] The dust removal unit includes a second movable block 27, a second movable plate 28, a second guide rod 29, a third spring 30, a movable plate 31, a first connecting block 32, a dust removal brush 33, a third movable block 34, a connecting unit, a second connecting block 50, and a third connecting block 35. The specific connections and working principles of each component are as follows: The second movable block 27 is inserted into another sliding groove inside the movable housing 49, and can slide horizontally along the groove. A second movable plate 28 is fixedly connected to the side of the second movable block 27 by welding. A second guide rod 29 is fixedly connected to the movable housing 49 by bolts. The second guide rod 29 is horizontally arranged and consistent with the sliding direction of the second movable block 27. The second guide rod 29 passes through a guide hole opened on the second movable plate 28 to form a sliding guide, ensuring that the second movable plate 28 drives the second movable block 27 to slide smoothly. The second movable plate 28 is connected to the inner wall of the movable housing 49 by a third spring 30 for providing elasticity. The third spring 30 is sleeved on the outside of the second guide rod 29. One end of the third spring 30 is welded and fixed to the second movable plate 28, and the other end is welded and fixed to the inner wall of the movable housing 49. Under normal conditions, the third spring 30 is in a naturally extended state, keeping the second movable block 27 in its initial position.

[0028] The second movable block 27 has a movable plate 31 fixedly connected to its side by welding. The movable plate 31 is vertically arranged. The first connecting block 32 is fixedly connected to the side of the movable plate 31 by bolts. A dust removal brush 33 is provided inside the movable housing 49. The dust removal brush 33 is made of soft and wear-resistant brush material. The end of the brush corresponds to the lens of the detection probe 3 and is used for contact wiping the lens surface. The bottom of the dust removal brush 33 is fixedly connected to the third movable block 34. The third movable block 34 is connected to the second connecting block 50 through a connecting unit to realize power transmission. The second connecting block 50 is fixedly connected to the side of the third connecting block 35 by welding. The first connecting block 32 is provided with a second inclined surface 36, and the third connecting block 35 is provided with a third inclined surface 37. The second inclined surface 36 and the third inclined surface 37 fit each other well and have good compatibility. The second inclined surface 36 is provided with a first snap-fit ​​groove 38, and the third inclined surface 37 is fixedly connected with a first snap-fit ​​protrusion 39. The first snap-fit ​​protrusion 39 and the first snap-fit ​​groove 38 are adapted to form a snap-fit ​​fit, which ensures the transmission stability between the first connecting block 32 and the third connecting block 35 and avoids relative sliding.

[0029] When the movable housing 49 moves along the guide rail 48, and the second movable block 27 contacts and is squeezed by the adjusting block 22, the second movable block 27 slides along the slide groove, driving the second movable plate 28 to slide and compress the third spring 30. During the sliding process of the second movable block 27, the movable plate 31 and the first connecting block 32 move synchronously. The first connecting block 32 is driven by the second inclined surface 36 and the third inclined surface 37 of the third connecting block 35. At the same time, the first snap-fit ​​protrusion 39 and the first snap-fit ​​groove 38 are engaged to drive the third connecting block 35 and the second connecting block 50 to move synchronously. The second connecting block 50 drives the third movable block 34 to move through the connecting unit. The third movable block 34 drives the dust removal brush 33 to move towards the lens of the detection probe 3 until the brush tip of the dust removal brush 33 is in contact with the lens surface. As the movable housing 49 continues to move, the dust removal brush 33 wipes the lens surface at a uniform speed to remove the firmly adhered dust, light oil and other contaminants on the lens surface, thus achieving contact dust removal. When the movable housing 49 moves to the designated position, the second movable block 27 disengages from the trigger structure, and the third spring 30 resets under its own elastic force, causing the second movable block 27, the movable plate 31, and the first connecting block 32 to reset. Then, through the third connecting block 35, the second connecting block 50, and the connecting unit, the third movable block 34 and the dust removal brush 33 are reset, disengaged from the lens surface, and a dust removal operation is completed.

[0030] An angle adjusting sleeve 24 is provided on the outer side of the first rotating shaft 21. The angle adjusting sleeve 24 is threadedly connected to the first rotating shaft 21. Rotating the angle adjusting sleeve 24 can drive the first rotating shaft 21 to rotate, thereby adjusting the air outlet angle of the dust blowing nozzle 20, so that the airflow can be accurately aimed at the core area of ​​the detection probe 3 lens, improving the dust blowing accuracy and efficiency. The first moving block 12 is provided with a first curved surface 25, and the extrusion block 16 is provided with a second curved surface 26. The curved surface structure can effectively reduce the contact resistance and wear between the first moving block 12 and the adjusting block 22, and between the extrusion block 16 and the elastic ball 18 during the movement, making the movement of each component smoother and reducing the occurrence of jamming.

[0031] The second moving block 27 is provided with a third curved surface 40, which is used to cooperate with the external triggering structure. It also serves to reduce motion resistance, avoid jamming and impact, and make the movement of the second moving block 27 more stable. At the same time, it ensures that the dust removal brush 33 moves gently when it comes into contact with the lens, avoiding scratching the optical lens of the detection probe 3 and protecting the detection probe 3.

[0032] The connecting unit includes a fourth connecting block 41, a connecting plate 43, a fourth spring 44, a slot 45, a plug rod 46, and a second snap-fit ​​protrusion 47. The specific connections and working principles of each component are as follows: The fourth connecting block 41 is provided with a second snap-fit ​​groove 42. The fourth connecting block 41 and the second connecting block 50 are fixedly connected by welding. The third moving block 34 is inserted into the second snap-fit ​​groove 42 and can slide up and down along the second snap-fit ​​groove 42. The side of the third moving block 34 is fixedly connected by welding to symmetrically arranged connecting plates 43. The connecting plates 43 are horizontally arranged. The connecting plates 43 are connected to the inner wall of the second snap-fit ​​groove 42 by a fourth spring 44 for providing elasticity. One end of the fourth spring 44 is fixedly welded to the connecting plate 43, and the other end is fixedly welded to the inner wall of the second snap-fit ​​groove 42. Under normal conditions, the fourth spring 44 is in a naturally extended state, so that the third moving block 34 is kept in the middle position in the second snap-fit ​​groove 42, realizing the floating connection of the third moving block 34.

[0033] The fourth connecting block 41 has a slot 45, which is horizontally positioned. A rod 46 is welded to the inner wall of the movable housing 49. A second locking protrusion 47, made of elastic material, is welded to the end of the rod 46 and fits into the slot 45. When the fourth connecting block 41 moves to the set position with the second connecting block 50, the rod 46 inserts into the slot 45, and the second locking protrusion 47 engages with the inner wall of the slot 45, positioning the fourth connecting block 41 and fixing the positions of the third moving block 34 and the dust removal brush 33. This ensures the dust removal brush 33 does not shift during cleaning and guarantees a uniform wiping effect. When the fourth connecting block 41 resets, the rod 46 disengages from the slot 45, the second locking protrusion 47 recovers its elastic deformation, releasing the positioning and not affecting the reset action of the dust removal brush 33.

[0034] The difference between this embodiment and embodiment 1 is that the placement plate 2 is a rotating plate used to drive the battery pack to rotate for testing. The rest of the structure is completely the same as that of embodiment 1.

[0035] Specifically, the rotating plate is connected to the base 1 via a rotating shaft. The lower end of the rotating shaft is connected to a servo motor, which is fixedly installed inside the base 1. The servo motor drives the rotating shaft to rotate, thereby causing the rotating plate to rotate around the shaft axis. The rotation angle can be precisely adjusted via an external control terminal. When the rotating plate rotates, it causes the lithium battery pack placed on it to rotate synchronously, so that the welding points of the battery pack in the circumference and at different angles can be exposed within the detection range of the detection probe 3. There is no need to manually adjust the posture of the battery pack, nor is it necessary to add multiple sets of detection probes 3. This enables all-round, blind-spot-free detection of the welding points of the lithium battery pack, adapting to the detection needs of multi-sided welded lithium battery packs.

[0036] Preparation: Place the new energy lithium battery pack to be tested on the placement plate 2. The anti-slip pad prevents the battery pack from shifting. If it is a rotating plate structure, the angle of the rotating plate can be adjusted by the servo motor so that the initial detection point of the battery pack is aligned with the detection probe 3. Detection Start-up: Start-up device, servo motor drives the moving box 49 to move at a constant speed along the guide rail 48. When the moving box 49 moves to the position of the adjustment plate 10, the moving rod 6 contacts and is squeezed with the adjustment slope 11 of the adjustment plate 10, which drives the barrier plate 4 to move against the elastic force of the first spring 9, opening the opening 5 of the moving box 49, and the detection probe 3 begins to perform laser detection on the welding points of the battery pack. Automatic cleaning: The moving box 49 continues to move, the first moving block 12 contacts and is squeezed by the first inclined surface 23 of the adjusting block 22, which drives the squeezing block 16 to squeeze the elastic ball 18, and the dust blowing nozzle 20 sprays out high-pressure airflow to blow and clean the lens of the detection probe 3 to remove floating dust; at the same time, the second moving block 27 is triggered to move, and through the transmission structure, it drives the dust removal brush 33 to fit against the lens surface and perform contact wiping on the lens to remove stubborn adhering substances; All-round inspection: If the placement plate 2 is a rotating plate, during the inspection process, the servo motor drives the rotating plate to rotate slowly, which drives the battery pack to rotate, so that all welding points pass through the detection range of the detection probe 3 in sequence, achieving inspection without dead angles; Inspection complete: After the moving housing 49 completes the inspection of all welding points, it moves in the opposite direction along the guide rail 48, disengaging from the area of ​​the adjustment plate 10. The first spring 9 resets, causing the barrier plate 4 to close the opening 5. The dust blowing unit and the dust removal unit reset synchronously, the inspection probe 3 stops working, and the inspected lithium battery pack is taken out, completing one inspection process.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding result detection device for new energy lithium battery packs, characterized in that, include: The base (1) has a mounting plate (2) for placing the battery pack. The detection probe (3) is set inside the movable housing (49), and the base (1) is provided with a guide rail (48) for moving the movable housing (49). An isolation unit, which is installed on the movable housing (49), is used to isolate the detection probe (3) from the outside environment. A dust removal assembly, which is disposed inside the movable housing (49), is used to perform dust removal operations on the detection probe (3).

2. The welding result detection device for new energy lithium battery packs as described in claim 1, characterized in that, The placement plate (2) is a rotating plate used to drive the battery pack to rotate for testing.

3. The welding result detection device for new energy lithium battery packs as described in claim 2, characterized in that, The barrier unit includes: A barrier plate (4) is inserted into the movable box (49), and an opening (5) is provided on the movable box (49). A moving rod (6) is fixedly connected to the side of the barrier plate (4). A first connecting rod (7) is fixedly connected to the movable box (49). The first connecting rod (7) passes through the moving rod (6). A limiting plate (8) is fixedly connected to the end of the first connecting rod (7). The limiting plate (8) is connected to the moving rod (6) through a first spring (9) for providing elastic force. The first spring (9) is sleeved on the outside of the first connecting rod (7). An adjusting plate (10) is fixedly connected to the base (1). A symmetrically arranged adjusting slope (11) is provided on the adjusting plate (10).

4. The welding result detection device for new energy lithium battery packs as described in claim 3, characterized in that, The dust removal assembly includes a dust blowing unit for blowing dust onto the detection probe (3) and a dust removal unit for removing dust from the detection probe (3).

5. The welding result detection device for new energy lithium battery packs as described in claim 4, characterized in that, The dust blowing unit includes a first movable block (12) inserted into the movable housing (49), with a first movable plate (13) fixedly connected to its side. A first guide rod (14) is fixedly connected inside the movable housing (49), passing through the first movable plate (13). The first movable plate (13) is connected to the first movable plate (13) via a second spring (15) for providing elasticity. The second spring (15) is sleeved on the outside of the first guide rod (14). The first movable block (12) A pressing block (16) is fixedly connected to the side of the movable box (49). A connecting cavity (17) is fixedly connected inside the movable box (49). An elastic ball (18) is fixedly connected to the connecting cavity (17). The connecting cavity (17) is connected to the dust blowing nozzle (20) through a connecting hose (19). The dust blowing nozzle (20) is connected to the first guide rod (14) through a first rotating shaft (21). An array of adjusting blocks (22) is fixedly connected to the adjusting plate (10). A first inclined surface (23) is symmetrically arranged on the adjusting block (22).

6. The welding result detection device for new energy lithium battery packs as described in claim 5, characterized in that, An angle adjustment sleeve (24) is provided on the outer side of the first rotating shaft (21), a first curved surface (25) is provided on the first moving block (12), and a second curved surface (26) is provided on the extrusion block (16).

7. The welding result detection device for new energy lithium battery packs as described in claim 4, characterized in that, The dust removal unit includes a second movable block (27) inserted into the movable housing (49), with a second movable plate (28) fixedly connected to its side. A second guide rod (29) is fixedly connected inside the movable housing (49), passing through the second movable plate (28). The second movable plate (28) is connected to the second movable plate (28) via a third spring (30) for providing elasticity. The third spring (30) is sleeved on the outside of the second guide rod (29). A movable plate (31) is fixedly connected to the side of the second movable block (27), and the side of the movable plate (31) is fixedly connected to... A first connecting block (32) is connected to the movable housing (49), and a dust removal brush (33) is provided inside the movable housing (49). The dust removal brush (33) is connected to a third movable block (34). The third movable block (34) is connected to a second connecting block (50) through a connecting unit. A third connecting block (35) is fixedly connected to the side of the second connecting block (50). A second inclined surface (36) is provided on the first connecting block (32), and a third inclined surface (37) is provided on the third connecting block (35). A first snap-fit ​​groove (38) is provided on the second inclined surface (36), and a first snap-fit ​​protrusion (39) is fixedly connected to the third inclined surface (37).

8. The welding result detection device for new energy lithium battery packs as described in claim 7, characterized in that, The second moving block (27) is provided with a third curved surface (40).

9. The welding result detection device for new energy lithium battery packs as described in claim 7, characterized in that, The connecting unit includes a fourth connecting block (41) with a second snap-fit ​​groove (42) inside. The fourth connecting block (41) is fixedly connected to the second connecting block (50). The third moving block (34) is inserted into the second snap-fit ​​groove (42). The side of the third moving block (34) is fixedly connected to a symmetrically arranged connecting plate (43). The connecting plate (43) is connected to the second snap-fit ​​groove (42) through a fourth spring (44) for providing elasticity. The fourth connecting block (41) has a slot (45). The inner wall of the moving box (49) is fixedly connected to a plug rod (46). The end of the plug rod (46) is fixedly connected to a second snap-fit ​​protrusion (47).

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