A four-corner positioning frame device for lithium battery PACK combination

Abstract

The utility model discloses a kind of four corner positioning frame devices of lithium battery PACK combination, including support box and baffle, the bottom end of the support box is movably installed with baffle, the bottom end of the support box of baffle side is installed with hinge, and support box is movably connected with baffle through hinge, the inside of the support box above baffle is movably installed with turnover shaft, the surface of the turnover shaft is sleeved with support frame, the top of the support frame is movably installed with connecting frame, the inside of the support box of connecting frame side is symmetrically installed with driving shaft, and support box is movably connected with connecting frame through driving shaft. The utility model not only realizes that four corner positioning frame device is conveniently positioned and fixed to lithium battery PACK combination, conveniently protects lithium battery PACK combination, and conveniently takes out and replaces lithium battery PACK combination, improves the convenience of lithium battery PACK combination replacement maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of positioning frame devices, specifically a four-corner positioning frame device for a lithium battery PACK assembly. Background Technology

[0002] Lithium-ion battery packs are a crucial conversion link in the transformation of lithium-ion batteries from individual cells to end-use applications. Their core involves combining multiple cells in series and parallel, and integrating components such as a battery management system and a thermal management system to form an energy storage unit with high energy density, safety, and reliability. The following is a detailed analysis of its key elements: a lithium-ion battery pack consists of multiple individual cells such as lithium-ion batteries, a battery protection board, connecting tabs, a structural casing, and a thermal management system.

[0003] As disclosed in patent application CN207731981U, a four-corner positioning frame device for a lithium battery pack includes two symmetrical four-corner positioning frames. Positioning blocks are respectively provided at the four corners of each four-corner positioning frame, and positioning holes are provided on each positioning block. A fixing strip is provided below the positioning blocks at the upper two corners of the four-corner positioning frames, and an isolation and reinforcing plate is connected to the middle of the fixing strip. The corresponding positioning holes on the two symmetrical four-corner positioning frames are connected by bolts. This utility model uses four-corner positioning frames to fix the battery position and prevent misalignment during operation.

[0004] Although it is easy to use and has good insulation performance, the height of one of the two isolation reinforcement plates is the same as the height of the battery tab, and the height of the other is lower than the height of the battery tab, and the height of the positioning block is the same as the height of the battery tab.

[0005] However, this does not solve the problem that existing positioning frame devices are generally not conducive to convenient positioning and fixing of lithium battery packs, convenient protection of lithium battery packs, and convenient removal and replacement of lithium battery packs, thus affecting the convenience of replacing and maintaining lithium battery packs. Utility Model Content

[0006] The purpose of this utility model is to provide a four-corner positioning frame device for a lithium battery pack, so as to solve the problems mentioned in the background art that the positioning frame device is not convenient for convenient positioning and fixing of the lithium battery pack, not convenient for convenient protection of the lithium battery pack, and not convenient for convenient removal and replacement of the lithium battery pack, thus affecting the convenience of replacement and maintenance of the lithium battery pack.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a four-corner positioning frame device for a lithium battery PACK assembly, comprising a support box and a baffle. The baffle is movably mounted on the bottom of the support box. A hinge is mounted on the bottom of the support box on one side of the baffle, and the support box is movably connected to the baffle via the hinge. A flip shaft is movably mounted inside the support box above the baffle. A support frame is fitted onto the surface of the flip shaft. A connecting frame is movably mounted on the top of the support frame. Drive shafts are symmetrically mounted inside the support box on one side of the connecting frame, and the support box is movably connected to the connecting frame via the drive shaft. A first arm is symmetrically and movably mounted on the outer wall of the connecting frame. A second arm is movably mounted on the outer wall of each of the first arms. A third arm is movably mounted on the outer wall of each of the second arms. A fourth arm is movably mounted on the outer wall of each of the third arms. A fifth arm is movably mounted on the outer wall of each of the fourth arms. A sixth arm is movably mounted on the outer wall of each of the fifth arms. The sixth arm, fourth arm, second arm, support frame, and... Positioning frames are movably installed between both sides of the connecting frame. Two sets of positioning seats are symmetrically installed at the top of each positioning frame. Connecting arms are movably installed on the outer wall of each sixth arm. Limiting arms are movably installed on the outer wall of each connecting frame away from the first arm, and the limiting arms are movably connected to the positioning frames on one side of the connecting frame. A first shaft is installed on the outer wall of each sixth arm on one side of the connecting arm, and the sixth arm is movably connected to the connecting arm via the first shaft. The first shaft is also connected to the positioning frames on one side of the sixth arm. A second shaft is installed on the outer wall of each sixth arm near the fifth arm, and the sixth arm is movably connected to the fifth arm via the second shaft. A sixth shaft is installed on the outer wall of each connecting arm away from the first shaft, and the connecting arm is movably connected to the fourth arm via the sixth shaft. The sixth shaft is also movably connected to the positioning frames on one side of the fourth arm. A seventh shaft is installed on the outer wall of each fifth arm near the fourth arm, and the fifth arm is movably connected to the fourth arm via the seventh shaft. The seventh shaft is also movably connected to the positioning frames on one side of the fourth arm.

[0008] Preferably, an eighth axis is installed on the outer wall of the fifth arm above the seventh axis, and the fifth arm is movably connected to the second arm through the eighth axis, and the eighth axis is connected to the positioning frame on one side of the second arm.

[0009] Preferably, a third shaft is installed on the outer wall of the fourth arm near the third arm, and the fourth arm is movably connected to the third arm through the third shaft. A support shaft is installed on the outer wall of the third arm above the third shaft, and the third arm is movably connected to the second arm through the support shaft. The support shaft is also movably connected to the positioning frame on one side of the second arm.

[0010] Preferably, a limiting shaft is movably installed on the outer wall of the third arm above the support shaft, and the third arm is movably connected to the support frame via the limiting shaft, and the limiting shaft is movably connected to the positioning frame on one side of the support frame.

[0011] Preferably, a fourth shaft is installed on the outer wall of the second arm near the first arm, and the second arm is movably connected to the first arm through the fourth shaft.

[0012] Preferably, a ninth axis is installed on the outer wall of the first arm above the fourth axis, and the first arm is movably connected to the connecting frame through the ninth axis, and the ninth axis is movably connected to the positioning frame on one side of the connecting frame, and a rotating shaft is movably installed on the top of the baffle.

[0013] Preferably, the surface of the rotating shaft is symmetrically fitted with pull arms, and the pull arms are connected to the third shaft. Fixing bolts are installed on the outer wall of the baffle on one side of the rotating shaft, and threaded holes are provided on the outer wall of the support box above the connecting frame.

[0014] Preferably, each positioning seat has a flip seat mounted on its top end, and each flip seat has a positioning arm movably mounted on its top end. A power shaft is mounted on the outer wall of the flip seat on one side of the positioning arm, and the flip seat is movably connected to the positioning arm via the power shaft. A threaded rod is provided on the outside of the positioning seat on one side of the power shaft, and a threaded sleeve is fitted on the surface of the threaded rod. The threaded sleeve is connected to the positioning seat, and the threaded rod extends to the outside of the positioning seat. A limit block is mounted on the outer wall of the threaded rod on one side of the positioning arm, and a support shaft is movably mounted on the outer wall of the positioning arm on one side of the limit block.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the positioning frame device not only realizes the convenient positioning and fixing of the lithium battery PACK assembly by the four corner positioning frame device, which facilitates the convenient protection of the lithium battery PACK assembly, but also facilitates the convenient removal and replacement of the lithium battery PACK assembly, thus improving the convenience of replacing and maintaining the lithium battery PACK assembly.

[0016] (1) Manually push the positioning frame on one side of the sixth arm. The positioning frame drives the sixth arm to rotate around the second axis. At the same time, the sixth arm drives the connecting arm to rotate around the first axis. The connecting arm drives the fourth arm to rotate around the third axis via the sixth axis. The fourth arm drives the positioning frame on one side to rotate around the seventh axis. At the same time, the seventh axis drives the fifth arm to rotate around the second axis. The fifth arm drives the second arm to rotate around the fourth axis via the eighth axis. The second arm drives the positioning frame on one side to rotate around the support axis. At the same time, the support axis drives the third arm to rotate around the third axis. The third arm drives the support frame to rotate around the flip axis via the limit axis. The support frame drives the first arm to rotate. The first arm drives the connecting frame to rotate around the drive axis via the ninth axis. The limit arm supports the connecting frame, so that multiple positioning frames and lithium batteries can be conveniently folded into the support box. This realizes the convenient positioning and fixing of the lithium battery PACK assembly by the four corner positioning frame device, which facilitates the convenient protection of the lithium battery PACK assembly, facilitates the convenient removal and replacement of the lithium battery PACK assembly, and improves the convenience of replacing and maintaining the lithium battery PACK assembly.

[0017] (2) Manually rotate the threaded rod, which drives the limit block to move. The limit block drives the positioning arm to rotate around the power shaft. The support shaft provides movable support for the positioning arm, and the flip seat provides movable support for the power shaft. This facilitates the convenient fixing of the lithium battery by multiple positioning arms, realizing the convenient fixing of the lithium battery PACK assembly by the four-corner positioning frame device. This facilitates the convenient four-corner positioning of the lithium battery PACK assembly and improves the stability of fixing and positioning the lithium battery PACK assembly. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the baffle of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the support frame of this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the positioning arm of this utility model;

[0023] Figure 6 This is a three-dimensional structural diagram of the connecting arm of this utility model;

[0024] Figure 7 This is a three-dimensional structural diagram of the connecting frame of this utility model.

[0025] In the diagram: 1. Support box; 2. Baffle; 3. Hinge; 4. Support frame; 5. Connecting frame; 6. First arm; 7. Second arm; 8. Third arm; 9. Fourth arm; 10. Fifth arm; 11. Sixth arm; 12. Limiting arm; 13. Connecting arm; 14. Positioning frame; 15. First shaft; 16. Second shaft; 17. Positioning seat; 18. Third shaft; 19. Fourth shaft; 20. Tilting shaft; 21. Drive shaft; 22. Rotating shaft; 23. Pull arm; 24. Threaded rod; 25. Threaded sleeve; 26. Limiting block; 27. Tilting seat; 28. Power shaft; 29. ​​Positioning arm; 30. Support shaft; 31. Fixing bolt; 32. Threaded hole; 33. Sixth shaft; 34. Seventh shaft; 35. Eighth shaft; 36. Limiting shaft; 37. Ninth shaft. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figure 1-7This utility model provides an embodiment of a four-corner positioning frame device for a lithium battery PACK assembly, comprising a support box 1 and a baffle 2. The baffle 2 is movably mounted on the bottom end of the support box 1, and a hinge 3 is mounted on the bottom end of the support box 1 on one side of the baffle 2. The support box 1 is movably connected to the baffle 2 via the hinge 3. A flip shaft 20 is movably mounted inside the support box 1 above the baffle 2. A support frame 4 is fitted on the surface of the flip shaft 20, and a connecting frame 5 is movably mounted on the top end of the support frame 4. A drive shaft 21 is symmetrically mounted inside the support box 1 on one side of the connecting frame 5, and the support box 1 is movably connected to the connecting frame 5 via the drive shaft 21. A first arm 6 is symmetrically and movably mounted on the outer wall of the connecting frame 5, and a second arm 7 is movably mounted on the outer wall of each first arm 6. A third arm 8 is movably mounted on the outer wall of the second arm 7. A fourth arm 9 is movably mounted on the outer wall of the third arm 8. A fifth arm 10 is movably mounted on the outer wall of the fourth arm 9. A sixth arm 11 is movably mounted on the outer wall of the fifth arm 10. A positioning frame 14 is movably mounted between the second arm 7, the fourth arm 9, the support frame 4, and the connecting frame 5. Two sets of positioning seats 17 are symmetrically mounted on the top of each positioning frame 14. A connecting arm 13 is movably mounted on the outer wall of the sixth arm 11. A limiting arm 12 is movably mounted on the outer wall of the connecting frame 5 on the side away from the first arm 6, and the limiting arm 12 is movably connected to the positioning frame 14 on one side of the connecting frame 5. A first shaft 15 is mounted on the outer wall of the sixth arm 11 on the side of the connecting arm 13. 1. The first shaft 15 is movably connected to the connecting arm 13, and the first shaft 15 is connected to the positioning frame 14 on one side of the sixth arm 11. A second shaft 16 is installed on the outer wall of the sixth arm 11 near the fifth arm 10, and the sixth arm 11 is movably connected to the fifth arm 10 via the second shaft 16. A sixth shaft 33 is installed on the outer wall of the connecting arm 13 away from the first shaft 15, and the connecting arm 13 is movably connected to the fourth arm 9 via the sixth shaft 33, and the sixth shaft 33 is movably connected to the positioning frame 14 on one side of the fourth arm 9. A seventh shaft 34 is installed on the outer wall of the fifth arm 10 near the fourth arm 9, and the fifth arm 10 is movably connected to the fourth arm 9 via the seventh shaft 34, and the seventh shaft 34 is movably connected to the positioning frame 14 on one side of the fourth arm 9. The fifth arm 10 above the seventh axis 34 is equipped with an eighth axis 35 on its outer wall, and the fifth arm 10 is movably connected to the second arm 7 via the eighth axis 35. The eighth axis 35 is also connected to a positioning frame 14 on one side of the second arm 7. The fourth arm 9 is equipped with a third axis 18 on its outer wall near the third arm 8, and the fourth arm 9 is movably connected to the third arm 8 via the third axis 18. The third arm 8 above the third axis 18 is equipped with a support shaft 30 on its outer wall, and the third arm 8 is movably connected to the second arm 7 via the support shaft 30. The support shaft 30 is also movably connected to a positioning frame 14 on one side of the second arm 7. A limit shaft 36 is movably installed on the outer wall of the third arm 8 above the support shaft 30, and the third arm 8 is movably connected to a support frame 4 via the limit shaft 36.Furthermore, the limiting shaft 36 is movably connected to the positioning frame 14 on one side of the support frame 4. A fourth shaft 19 is installed on the outer wall of the second arm 7 near the first arm 6, and the second arm 7 is movably connected to the first arm 6 via the fourth shaft 19. A ninth shaft 37 is installed on the outer wall of the first arm 6 above the fourth shaft 19, and the first arm 6 is movably connected to the connecting frame 5 via the ninth shaft 37. The ninth shaft 37 is movably connected to the positioning frame 14 on one side of the connecting frame 5. A rotating shaft 22 is movably installed at the top of the baffle 2. Pull arms 23 are symmetrically fitted onto the surface of the rotating shaft 22, and the pull arms 23 are connected to the third shaft 18. A fixing bolt 31 is installed on the outer wall of the baffle 2 on one side of the rotating shaft 22. Threaded holes 32 are provided on the outer wall of the support box 1 above the connecting frame 5.

[0028] The lithium battery is placed on the surface of multiple positioning frames 14. The threaded rod 24 is manually rotated to facilitate the positioning arm 29 in fixing the lithium battery. The positioning frame 14 on one side of the sixth arm 11 is manually pushed. The positioning frame 14 drives the sixth arm 11 to rotate around the second axis 16. At the same time, the sixth arm 11 drives the connecting arm 13 to rotate around the first axis 15. The connecting arm 13 drives the fourth arm 9 to rotate around the third axis 18 via the sixth axis 33. The fourth arm 9 drives the positioning frame 14 on one side to rotate around the seventh axis 34. The rotation is simultaneous with the seventh axis 34 driving the fifth arm 10 to rotate around the second axis 16. The fifth arm 10, via the eighth axis 35, drives the second arm 7 to rotate around the fourth axis 19. The second arm 7 drives the positioning frame 14 on one side to rotate around the support axis 30. At the same time, the support axis 30 drives the third arm 8 to rotate around the third axis 18. The third arm 8, via the limit axis 36, drives the support frame 4 to rotate around the flip axis 20. The support frame 4 drives the first arm 6 to rotate. The first arm 6, via the ninth axis 37, drives the connecting frame 5 around the drive axis. 21 is the axis of rotation, and the limiting arm 12 supports the connecting frame 5 to facilitate the convenient folding of multiple positioning frames 14 and lithium batteries into the support box 1. At the same time, the third shaft 18 drives the pull arm 23 to rotate around the hinge 3. The pull arm 23 drives the baffle 2 to rotate through the rotating shaft 22. The baffle 2 drives the fixing bolt 31 to rotate, so that the baffle 2 can move to the surface of the support box 1. The fixing bolt 31 is manually rotated. Under the threaded connection between the fixing bolt 31 and the threaded hole 32, the fixing bolt 31 can be conveniently fixed to the baffle 2, so as to facilitate the convenient protection of the lithium battery. When the lithium battery needs to be replaced, the fixing bolt 31 is rotated in the opposite direction, and the multiple positioning frames 14 can be manually removed to facilitate the convenient replacement of the lithium battery on the multiple positioning frames 14. This realizes the convenient positioning and fixing of the lithium battery PACK assembly by the four corner positioning frame device, which facilitates the convenient protection of the lithium battery PACK assembly, facilitates the convenient removal and replacement of the lithium battery PACK assembly, and improves the convenience of replacing and maintaining the lithium battery PACK assembly.

[0029] Each positioning seat 17 has a flip seat 27 installed at its top, and a positioning arm 29 is movably installed at the top of each flip seat 27. A power shaft 28 is installed on the outer wall of the flip seat 27 on one side of the positioning arm 29, and the flip seat 27 is movably connected to the positioning arm 29 through the power shaft 28. A threaded rod 24 is provided on the outside of the positioning seat 17 on one side of the power shaft 28. A threaded sleeve 25 is fitted on the surface of the threaded rod 24, and the threaded sleeve 25 is connected to the positioning seat 17. The threaded rod 24 extends to the outside of the positioning seat 17. A limit block 26 is installed on the outer wall of the threaded rod 24 on one side of the positioning arm 29, and a support shaft 30 is movably installed on the outer wall of the positioning arm 29 on one side of the limit block 26.

[0030] When it is necessary to fix the lithium battery, the threaded rod 24 is manually rotated. With the threaded connection between the threaded rod 24 and the threaded sleeve 25, the threaded rod 24 drives the limiting block 26 to move. The limiting block 26 drives the positioning arm 29 to rotate around the power shaft 28. The support shaft 30 provides movable support for the positioning arm 29, and the flip seat 27 provides movable support for the power shaft 28. This facilitates the convenient fixing of the lithium battery by multiple positioning arms 29, realizing the convenient fixing of the lithium battery PACK assembly by the four-corner positioning frame device, facilitating the convenient four-corner positioning of the lithium battery PACK assembly, and improving the stability of the fixing and positioning of the lithium battery PACK assembly.

[0031] In this embodiment, the lithium battery is placed on the surface of multiple positioning frames 14. The threaded rod 24 is manually rotated to facilitate the positioning arm 29 in fixing the lithium battery. The positioning frame 14 on one side of the sixth arm 11 is manually pushed, causing the sixth arm 11 to rotate about the second axis 16. At the same time, the sixth arm 11 rotates about the first axis 15, causing the connecting arm 13 to rotate. The connecting arm 13, via the sixth axis 33, causes the fourth arm 9 to rotate about the third axis 18. The fourth arm 9 causes one side of the positioning frame 14 to rotate about the seventh axis 34. At the same time, the seventh axis 34 causes the fifth arm 10 to rotate about the second axis 16. The fifth arm 10, via the eighth axis 35, causes the second arm 7 to rotate about the fourth axis 19. The second arm 7 causes one side of the positioning frame 14 to rotate about the support shaft 30. The support shaft 30 rotates, and simultaneously the support shaft 30 drives the third arm 8 to rotate around the third shaft 18. The third arm 8, via the limiting shaft 36, drives the support frame 4 to rotate around the flipping shaft 20. The support frame 4 drives the first arm 6 to rotate. The first arm 6, via the ninth shaft 37, drives the connecting frame 5 to rotate around the drive shaft 21. The limiting arm 12 supports the connecting frame 5, so that multiple sets of positioning frames 14 and lithium batteries can be easily folded into the support box 1. The threaded rod 24 is manually rotated, and the threaded rod 24 drives the limiting block 26 to move. The limiting block 26 drives the positioning arm 29 to rotate around the power shaft 28. The support shaft 30 provides movable support for the positioning arm 29, and the flipping seat 27 provides movable support for the power shaft 28, so that multiple sets of positioning arms 29 can be easily fixed to the lithium battery, thus completing the use of the positioning frame device.

Claims

1. A four-corner positioning frame device for a lithium battery PACK assembly, characterized in that: The system includes a support box (1) and a baffle (2). The baffle (2) is movably installed at the bottom of the support box (1). A hinge (3) is installed at the bottom of the support box (1) on one side of the baffle (2), and the support box (1) is movably connected to the baffle (2) via the hinge (3). A flip shaft (20) is movably installed inside the support box (1) above the baffle (2). A support frame (4) is fitted on the surface of the flip shaft (20). A connecting frame (5) is movably installed at the top of the support frame (4). A drive shaft (21) is symmetrically installed inside the support box (1) on one side of the connecting frame (5), and the support box (1) is movably connected to the connecting frame (5) via the drive shaft (21). A first arm (6) is symmetrically and movably mounted on the outer wall of the connecting frame (5). A second arm (7) is movably mounted on the outer wall of each first arm (6). A third arm (8) is movably mounted on the outer wall of each second arm (7). A fourth arm (9) is movably mounted on the outer wall of each third arm (8). A fifth arm (10) is movably mounted on the outer wall of each fourth arm (9). A sixth arm (11) is movably mounted on the outer wall of each fifth arm (10). A positioning frame (14) is movably mounted between the sides of the sixth arm (11), the fourth arm (9), the second arm (7), the support frame (4), and the connecting frame (5). Two positioning frames (14) are symmetrically mounted on the top of each positioning frame (14). The group positioning base (17) has a connecting arm (13) movably mounted on the outer wall of the sixth arm (11). A limiting arm (12) is movably mounted on the outer wall of the connecting frame (5) away from the first arm (6), and the limiting arm (12) is movably connected to the positioning frame (14) on one side of the connecting frame (5). A first shaft (15) is mounted on the outer wall of the sixth arm (11) on one side of the connecting arm (13), and the sixth arm (11) is movably connected to the connecting arm (13) via the first shaft (15). The first shaft (15) is connected to the positioning frame (14) on one side of the sixth arm (11). A second shaft is mounted on the outer wall of the sixth arm (11) near the fifth arm (10). A shaft (16) is installed on the outer wall of the connecting arm (13) away from the first shaft (15), and the connecting arm (13) is movably connected to the fourth arm (9) via the sixth shaft (33). The sixth shaft (33) is movably connected to the positioning frame (14) on the side of the fourth arm (9). A seventh shaft (34) is installed on the outer wall of the fifth arm (10) near the fourth arm (9), and the fifth arm (10) is movably connected to the fourth arm (9) via the seventh shaft (34). The seventh shaft (34) is movably connected to the positioning frame (14) on the side of the fourth arm (9).

2. The four-corner positioning frame device for a lithium battery PACK assembly according to claim 1, characterized in that: The fifth arm (10) above the seventh axis (34) is equipped with an eighth axis (35), and the fifth arm (10) is movably connected to the second arm (7) through the eighth axis (35), and the eighth axis (35) is connected to the positioning frame (14) on one side of the second arm (7).

3. The four-corner positioning frame device for a lithium battery PACK assembly according to claim 1, characterized in that: The fourth arm (9) is equipped with a third shaft (18) on the outer wall near the third arm (8), and the fourth arm (9) is movably connected to the third arm (8) through the third shaft (18). The third arm (8) is equipped with a support shaft (30) on the outer wall above the third shaft (18), and the third arm (8) is movably connected to the second arm (7) through the support shaft (30). The support shaft (30) is movably connected to the positioning frame (14) on the side of the second arm (7).

4. The four-corner positioning frame device for a lithium battery PACK assembly according to claim 3, characterized in that: Limiting shafts (36) are movably installed on the outer wall of the third arm (8) above the support shaft (30), and the third arm (8) is movably connected to the support frame (4) through the limiting shaft (36), and the limiting shaft (36) is movably connected to the positioning frame (14) on one side of the support frame (4).

5. The four-corner positioning frame device for a lithium battery PACK assembly according to claim 1, characterized in that: The second arm (7) is equipped with a fourth shaft (19) on the outer wall of the side close to the first arm (6), and the second arm (7) is movably connected to the first arm (6) through the fourth shaft (19).

6. The four-corner positioning frame device for a lithium battery PACK assembly according to claim 5, characterized in that: The outer wall of the first arm (6) above the fourth axis (19) is equipped with a ninth axis (37), and the first arm (6) is movably connected to the connecting frame (5) through the ninth axis (37), and the ninth axis (37) is movably connected to the positioning frame (14) on one side of the connecting frame (5). The top of the baffle (2) is movably equipped with a rotating shaft (22).

7. The four-corner positioning frame device for a lithium battery PACK assembly according to claim 6, characterized in that: The rotating shaft (22) is symmetrically fitted with pull arms (23), and the pull arms (23) are connected to the third shaft (18). Fixing bolts (31) are installed on the outer wall of the baffle (2) on one side of the rotating shaft (22), and threaded holes (32) are provided on the outer wall of the support box (1) above the connecting frame (5).

8. The four-corner positioning frame device for a lithium battery PACK assembly according to claim 1, characterized in that: Each positioning seat (17) has a flip seat (27) installed at its top end. Each flip seat (27) has a positioning arm (29) movably installed at its top end. Each flip seat (27) has a power shaft (28) installed on the outer wall of the flip seat (27) on one side of the positioning arm (29). The flip seat (27) is movably connected to the positioning arm (29) via the power shaft (28). Each positioning seat (17) on one side of the power shaft (28) has a threaded rod (24) installed on its outer side. Each threaded rod (24) has a threaded sleeve (25) fitted on its surface. The threaded sleeve (25) is connected to the positioning seat (17). The threaded rod (24) extends to the outside of the positioning seat (17). Each threaded rod (24) on one side of the positioning arm (29) has a limit block (26) installed on its outer wall. Each positioning arm (29) on one side of the limit block (26) has a support shaft (30) movably installed on its outer wall.

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