A high-pressure boron-free electrolyte production filling device and a method of using the same

Abstract

This invention relates to the field of electrolyte filling technology, and discloses a filling device and its usage method for producing high-voltage boron-free electrolyte. A battery pack is placed inside a limiting groove, and several sets of two baffles are equipped with opening components. The invention uses a cylinder to move a support and a U-shaped frame. The U-shaped frame pushes a truncated cone, causing a guide tube to move along an L-shaped frame and compress a second telescopic spring. A suction cup mounted on the guide tube adsorbs the upper end of the battery pack opening. After the cylinder resets, the U-shaped frame disengages from the truncated cone, and the second telescopic spring, through a connecting block, drives the guide tube to reset. The guide tube then pulls open the battery pack opening via the suction cup, automatically flattening the filling port, ensuring smooth filling and reducing electrolyte overflow. A first drive motor drives a lead screw to rotate, causing a slide and multiple filling heads to move up and down along a support frame. A filling pump extracts electrolyte and fills it into the battery pack through the filling heads, enabling continuous filling of the battery pack electrolyte and significantly improving production efficiency and consistency.

Description

Technical Field

[0001] This invention relates to the field of electrolyte filling technology, specifically to a filling device for producing high-voltage boron-free electrolyte and its usage method. Background Technology

[0002] The main components of an electrolyte vary depending on the application, but typically include solvents, solutes (such as salts), and additives. For example, lithium-ion battery electrolytes usually contain main solvents such as ethylene carbonate, dimethyl carbonate, ethyl methyl carbonate, and diethyl carbonate, as well as conductive salts such as lithium hexafluorophosphate.

[0003] In the electrolyte production process, the produced electrolyte needs to be filled into the battery pack through a filling device. Traditional electrolyte filling requires manual opening or flattening before filling because the filling port of the battery pack is usually flat or closed. This results in poor operation consistency and is prone to electrolyte splashing. Therefore, a filling device for high-voltage boron-free electrolyte production and its usage method are proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a filling device and its method for producing high-voltage boron-free electrolyte, in order to solve the problem mentioned in the background art that, in the electrolyte production process, the produced electrolyte needs to be filled into the battery pack through a filling device. In traditional electrolyte filling, since the filling port of the battery pack is usually flat or closed, it needs to be manually opened or flattened before filling, resulting in poor operation consistency and easy electrolyte splashing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a filling device for producing high-voltage boron-free electrolyte, comprising... A fixing frame, wherein a placement component is provided on the top of the fixing frame, and an injection component is provided on the top of the fixing frame behind the placement component; The placement assembly includes a rotating shaft, a turntable, and several placement racks. The rotating shaft is rotatably connected to the top of a fixed frame, the turntable is fixedly connected to the top of the rotating shaft, and the several placement racks are fixedly connected to the top of the turntable. Several placement slots are formed on the top of the several placement racks, and limit slots are formed at the bottom of the several placement slots. Baffles are fixedly connected to both sides of the several placement slots on the top of the several placement racks. Deep grooves are formed at the front ends of both inner sides of the several placement slots. Limit posts are slidably connected inside the deep grooves. A first telescopic spring is fixedly connected between the limit posts and the deep grooves. A battery pack is placed inside the limit grooves. Opening components are provided on the several sets of two baffles.

[0006] Preferably, the opening assembly includes two L-shaped frames, two guide tubes, and two suction cups. The two L-shaped frames are fixedly connected to opposite sides of several sets of two baffles. The two guide tubes movably pass through one side of the two L-shaped frames. The two suction cups are installed at opposite ends of the two guide tubes. A frustum base is fixedly sleeved on one side of the L-shaped frame on the two guide tubes. A connecting block is fixedly sleeved on the other side of the L-shaped frame on the two guide tubes. A connecting plate is fixedly connected to the top rear side of the two baffles. A U-shaped frame is slidably connected to the outer side of the connecting plate through a guide post.

[0007] Preferably, a second telescopic spring is movably sleeved on the outer side of the guide tube, with one end of the second telescopic spring abutting against the other side of the L-shaped frame and the other end of the second telescopic spring abutting against one side of the connecting block.

[0008] Preferably, both ends of the U-shaped frame are provided with arc-shaped grooves, and the two ends of the U-shaped frame respectively abut against the outer sides of the two truncated cones.

[0009] Preferably, the top of the turntable is fixedly connected to several connecting frames, the top of the connecting frames is fixedly connected to a cylinder, the piston rod of the cylinder is fixedly connected to a bracket, and one side of the bracket is fixedly connected to several connecting columns, one end of each of the connecting columns being fixedly connected to several U-shaped frames.

[0010] Preferably, a second drive motor is installed on the inner top of the fixing frame, the output shaft of the second drive motor is fixedly connected to one end of the rotating shaft, and an electrical slip ring is fixedly sleeved on the outer side of the rotating shaft, with the outer ring of the electrical slip ring fixedly connected to the top of the fixing frame.

[0011] Preferably, the bottom of the turntable is fixedly connected with several blocks, and a photoelectric switch is installed on the top of the fixing frame at the rear side of the turntable.

[0012] Preferably, the electrical output terminal of the photoelectric switch is connected to the electrical input terminal of the second drive motor, and the air outlet of the electrical slip ring is connected to the air inlet of the cylinder and the guide tube respectively through pipes.

[0013] Preferably, the infusion assembly includes a support frame, two fixed blocks, and a lead screw. The support frame is fixedly connected to the top of the fixed frame and located behind the turntable. The two fixed blocks are fixedly connected to one side of the support frame. The lead screw is rotatably connected between the two fixed blocks. A slide block is slidably connected to one side of the support frame. The slide block is threaded to the outside of the lead screw. Several infusion heads are installed on the slide block. A first drive motor is installed on the top of the support frame. The output shaft of the first drive motor is fixedly connected to one end of the lead screw extending to the outside of one of the fixed blocks. Several infusion pumps are installed inside the fixed frame. The outlets of the several infusion pumps are connected to the several infusion heads through pipes.

[0014] The present invention also provides a method for using a filling device for the production of high-voltage boron-free electrolyte, comprising the following steps: S1. Loading: Personnel place the battery pack inside the limiting slot and push the battery pack to move. The two limiting posts move under force, and the first telescopic spring in the deep slot is compressed. When one side of the battery pack moves and touches the side of the placement slot, one end of the limiting post disengages from the outside of the battery pack. The first telescopic spring drives the limiting post to move and reset. The second drive motor drives the turntable to rotate through the rotating shaft. The turntable drives the four stops to rotate. When one of the stops moves to one end of the photoelectric switch, the photoelectric switch controls the second drive motor to stop running. S2. When the battery pack moves directly below the filling head, the piston rod of the cylinder extends and pushes the bracket to move. The bracket pushes several U-shaped frames to move through several connecting columns. The U-shaped frames abut against the outside of the truncated cone and push it to move. The truncated cone drives the guide tube to move on the L-shaped frame. The second telescopic spring is compressed by the force. At this time, the suction cup on the guide tube abuts against the upper outside of the battery pack. Then, the piston rod of the cylinder is controlled to reset, so that the two ends of the U-shaped frame are separated from the outside of the truncated cone. The second telescopic spring drives the guide tube to reset through the connecting block. The guide tube pulls the opening of the battery pack through the suction cup. S3. Filling: The output shaft of the first drive motor drives the lead screw to rotate, and the lead screw drives the slide to slide on the support frame. The slide drives several filling heads to move downward to above the opening of the battery pack. Then, the electrolyte is drawn by the filling pump and input into the inside of the filling head through the pipeline. The electrolyte is then filled into the inside of the battery pack through the filling head.

[0015] Compared with the prior art, the present invention, employing the above technical solution, has the following technical effects: 1. This invention uses a cylinder to move a support and a U-shaped frame. The U-shaped frame pushes a truncated cone, causing a guide tube to move along an L-shaped frame and compress a second telescopic spring. A suction cup mounted on the guide tube adsorbs the upper end of the battery pack opening. After the cylinder resets, the U-shaped frame disengages from the truncated cone, and the second telescopic spring, through a connecting block, drives the guide tube to reset. The guide tube then pulls open the battery pack opening via the suction cup, automatically flattening the injection port to ensure smooth filling and reduce electrolyte overflow. A first drive motor drives a lead screw to rotate, causing a slide and multiple injection heads to move up and down along the support frame. The injection pump draws electrolyte and injects it into the battery pack through the injection heads, enabling continuous electrolyte injection into the battery pack and significantly improving production efficiency and consistency.

[0016] 2. This invention, through the setting of a placement groove, a deep groove, a first telescopic spring, and a limiting post, achieves automatic positioning of the battery pack by setting a placement groove, a deep groove, and a first telescopic spring cooperating with a limiting post. When the battery pack is pushed in, the limiting post is compressed by force, and after the battery pack is in place, the first telescopic spring drives the limiting post to reset, thereby achieving automatic positioning of the battery pack and preventing movement during the filling process. The placement operation is convenient and the positioning is reliable. The second drive motor drives the turntable and the stop to rotate, and the photoelectric switch detects the position of the stop and controls the second drive motor to stop, thereby realizing the feeding of the battery pack and the stopping of the filling station, ensuring the continuity of material transportation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the left-side structure of the present invention; Figure 3 This is a schematic diagram of the support frame structure of the present invention; Figure 4 This is a schematic diagram of the placement rack structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram of area A in the middle; Figure 6 This is a schematic cross-sectional view of the placement rack of the present invention; Figure 7 This is a schematic diagram of the support structure of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1. Fixed frame; 21. Support frame; 22. Fixed block; 23. Lead screw; 24. Slide; 25. Injection head; 26. First drive motor; 27. Injection pump; 31. Rotating shaft; 32. Turntable; 33. Placement frame; 34. Placement groove; 35. Limiting groove; 36. Baffle; 37. Deep groove; 38. First telescopic spring; 39. Limiting post; 41. L-shaped frame; 42. Guide tube; 43. Suction cup; 44. Frustum; 45. Connecting block; 46. Second telescopic spring; 47. Connecting plate; 48. U-shaped frame; 49. Battery pack; 51. Connecting frame; 52. Cylinder; 53. Bracket; 54. Connecting post; 61. Second drive motor; 62. Electrical slip ring; 63. Photoelectric switch; 64. Stop block. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce. Example

[0022] Please see Figure 1-7 The present invention provides a technical solution: a filling device for producing high-pressure boron-free electrolyte, including a fixed frame 1, a placement component is provided on the top of the fixed frame 1, and a filling component is provided on the top of the fixed frame 1 behind the placement component.

[0023] By setting up a placement assembly, the battery pack 49 can be placed and positioned. The placement assembly includes a rotating shaft 31, a turntable 32, and several placement racks 33. The rotating shaft 31 is rotatably connected to the top of the fixed frame 1, the turntable 32 is fixedly connected to the top of the rotating shaft 31, and the several placement racks 33 are fixedly connected to the top of the turntable 32. Several placement slots 34 are opened on the top of the several placement racks 33, and limiting slots 35 are opened at the bottom of the several placement slots 34. Baffles 36 are fixedly connected to both sides of the several placement slots 34 on the top of the several placement racks 33. Deep grooves 37 are opened on the front ends of both inner sides of the several placement slots 34. Limiting posts 39 are slidably connected inside the deep grooves 37. The limiting posts 39 and the limiting posts 39 are connected to the limiters 39. A first telescopic spring 38 is fixedly connected between the deep grooves 37. The first telescopic spring 38 is a consumable part and needs to be maintained and replaced after long-term use. A battery pack 49 is placed inside the limiting groove 35. When the battery pack 49 is placed inside the limiting groove 35 by personnel and pushed to move, the two limiting posts 39 are moved by force, and the first telescopic spring 38 in the deep groove 37 is compressed. When one side of the battery pack 49 moves and abuts against one side of the placement groove 34, one end of the limiting post 39 is disengaged from the outside of the battery pack 49. At this time, the first telescopic spring 38 drives the limiting post 39 to move and reset, thereby limiting the battery pack 49. Several sets of two baffles 36 are each equipped with an opening component.

[0024] By setting up an opening component, the battery pack 49 can be opened to facilitate the filling of electrolyte. The opening component includes two L-shaped brackets 41, two guide tubes 42, and two suction cups 43. The two L-shaped brackets 41 are fixedly connected to the opposite sides of several sets of two baffles 36. The two guide tubes 42 are respectively movably passed through one side of the two L-shaped brackets 41. The two suction cups 43 are installed at the opposite ends of the two guide tubes 42. A frustum base 44 is fixedly sleeved on one side of the L-shaped bracket 41 on the two guide tubes 42. A connecting block 45 is fixedly sleeved on the other side of the L-shaped bracket 41 on the two guide tubes 42. A connecting plate 47 is fixedly connected to the top rear side of the two baffles 36. A U-shaped bracket 48 is slidably connected to the outside of the connecting plate 47 through a guide post. A second telescopic spring 46 is movably sleeved on the outside of the guide tube 42. The second telescopic spring 46 is a vulnerable part. For long-term use, maintenance and replacement are required. One end of the second telescopic spring 46 abuts against the other side of the L-shaped frame 41, and the other end of the second telescopic spring 46 abuts against one side of the connecting block 45. Both ends of the U-shaped frame 48 are provided with arc-shaped grooves, and both ends of the U-shaped frame 48 abut against the outer sides of the two truncated cone seats 44 respectively. By moving the U-shaped frame 48, the U-shaped frame 48 pushes the truncated cone seats 44, causing the guide tube 42 to move along the L-shaped frame 41 and compress the second telescopic spring 46. The suction cup 43 installed on the guide tube 42 adsorbs the upper end of the battery pack 49 opening. After the cylinder 52 is reset, the U-shaped frame 48 disengages from the truncated cone seats 44, and the second telescopic spring 46 drives the guide tube 42 to reset through the connecting block 45. The guide tube 42 pulls open the battery pack 49 opening through the suction cup 43, thereby automatically flattening the injection port, ensuring smooth filling and reducing electrolyte overflow.

[0025] Several connecting brackets 51 are fixedly connected to the top of the turntable 32. A cylinder 52 is fixedly connected to the top of the connecting bracket 51. A bracket 53 is fixedly connected to the piston rod of the cylinder 52. Several connecting columns 54 are fixedly connected to one side of the bracket 53. One end of each connecting column 54 is fixedly connected to several U-shaped frames 48. The piston rod of the cylinder 52 extends and pushes the bracket 53 to move. The bracket 53 then pushes the several U-shaped frames 48 to move through the connecting columns 54. The air outlet of the electric slip ring 62 is connected to the air inlet of the cylinder 52 and the guide tube 42 through pipes. An electric slip ring 62 is fixedly sleeved on the outside of the rotating shaft 31. The outer ring of the electric slip ring 62 is fixedly connected to the top of the fixed frame 1. The electric slip ring 62 can provide rotational air supply to the cylinder 52 and the guide tube 42.

[0026] To enable the feeding and filling of the battery pack 49, a second drive motor 61 is installed on the top inner side of the fixing frame 1. The output shaft of the second drive motor 61 is fixedly connected to one end of the rotating shaft 31. Several stops 64 are fixedly connected to the bottom of the turntable 32. A photoelectric switch 63 is installed on the top of the fixing frame 1 behind the turntable 32. The electrical output terminal of the photoelectric switch 63 is connected to the electrical input terminal of the second drive motor 61. The second drive motor 61 drives the turntable 32 to rotate through the rotating shaft 31. At the same time, the turntable 32 drives the four stops 64 to rotate. When a stop 64 moves to one end of the photoelectric switch 63, the photoelectric switch 63 controls the second drive motor 61 to stop running, so as to facilitate the feeding of the battery pack 49 and the filling of the electrolyte.

[0027] By setting up a filling assembly, electrolyte filling can be completed quickly. The filling assembly includes a support frame 21, two fixing blocks 22, and a lead screw 23. The support frame 21 is fixedly connected to the top of the fixing frame 1 and located behind the turntable 32. The two fixing blocks 22 are fixedly connected to one side of the support frame 21. The lead screw 23 is rotatably connected between the two fixing blocks 22. A lead screw guard can be installed on the outside of the lead screw 23 for protection, and lubricant can be applied regularly. A slide block 24 is slidably connected to one side of the support frame 21. The slide block 24 is threadedly connected to the outside of the lead screw 23. Several filling heads 25 are installed on the slide block 24. A first drive motor 26 is installed on the top of the support frame 21. The output shaft of the motor 26 is fixedly connected to one end of the lead screw 23 extending to the outside of one of the fixed blocks 22. Several filling pumps 27 are installed inside the fixed frame 1. The outlets of the filling pumps 27 are connected to several filling heads 25 through pipes. The output shaft of the first drive motor 26 drives the lead screw 23 between the two fixed blocks 22 to rotate. The lead screw 23 drives the slide 24 to slide on the support frame 21, so that the slide 24 drives the several filling heads 25 to move downward to above the opening of the battery pack 49. Then, the electrolyte is drawn by the filling pumps 27 and input into the inside of the filling head 25 through the pipes. The electrolyte is then filled into the inside of the battery pack 49 through the filling head 25, thus completing the electrolyte filling.

[0028] The working principle is as follows: When a person places the battery pack 49 inside the limiting groove 35 and pushes the battery pack 49 to move, the two limiting posts 39 move under force, and the first telescopic spring 38 in the deep groove 37 is compressed. When one side of the battery pack 49 moves and abuts against one side of the placement groove 34, one end of the limiting post 39 disengages from the outside of the battery pack 49. At this time, the first telescopic spring 38 drives the limiting post 39 to move and reset, thereby limiting the battery pack 49. After several battery packs 49 are placed, the second drive motor 61 is started by controlling the switch group. The second drive motor 61 drives the turntable 32 to rotate through the rotating shaft 31. At the same time, the turntable 32 drives the four stops 64 to rotate. When one of the stops 64 moves to one end of the photoelectric switch 63, the photoelectric switch 63 controls the second drive motor 61 to stop running, so as to facilitate the feeding of the battery pack 49 and the filling of electrolyte. When the battery pack 49 moves directly below the filling head 25, the solenoid valve of the cylinder 52 controlled by the switch group is activated. The piston rod of the cylinder 52 extends and pushes the bracket 53 to move. The bracket 53 then pushes several U-shaped frames 48 to move through several connecting posts 54. The U-shaped frames 48 abut against the outside of the frustum base 44 and push it to move. The frustum base 44 then drives the guide tube 42 to move on the L-shaped frame 41. The second telescopic spring 46 is compressed under force. At this time, the suction cup 43 on the guide tube 42... The suction cup 43 presses against the upper outer side of the battery pack 49 to adsorb the opening of the battery pack 49. Then, the piston rod of the control cylinder 52 is reset, so that the two ends of the U-shaped frame 48 are disengaged from the outer side of the truncated cone base 44. The second telescopic spring 46 drives the guide tube 42 to reset through the connecting block 45. The guide tube 42 pulls the opening of the battery pack 49 open through the suction cup 43 to facilitate the filling of electrolyte into the battery pack 49. After the filling is completed, the suction cup 43 is released to facilitate the continuous filling of electrolyte. During filling, the first drive motor 26 is started by controlling the switch group. The output shaft of the first drive motor 26 drives the lead screw 23 between the two fixed blocks 22 to rotate. The lead screw 23 then drives the slide 24 to slide on the support frame 21, so that the slide 24 drives several filling heads 25 to move downward to above the opening of the battery pack 49. Then, the electrolyte is drawn by the filling pump 27 and input into the inside of the filling head 25 through the pipeline. The electrolyte is then filled into the inside of the battery pack 49 through the filling head 25, thus completing the electrolyte filling.

[0029] The present invention also provides a method for using a filling device for the production of high-voltage boron-free electrolyte, comprising the following steps: S1. Loading: The battery pack 49 is placed inside the limiting groove 35 by personnel and pushed to move. The two limiting posts 39 move under force, and the first telescopic spring 38 in the deep groove 37 is compressed. When one side of the battery pack 49 moves and abuts against one side of the placement groove 34, one end of the limiting post 39 disengages from the outside of the battery pack 49. The first telescopic spring 38 drives the limiting post 39 to move and reset. The second drive motor 61 drives the turntable 32 to rotate through the rotating shaft 31. The turntable 32 drives the four stops 64 to rotate. When one of the stops 64 moves to one end of the photoelectric switch 63, the photoelectric switch 63 controls the second drive motor 61 to stop running. S2, unfold. When the battery pack 49 moves directly below the filling head 25, the piston rod of the cylinder 52 extends and pushes the bracket 53 to move. The bracket 53 pushes several U-shaped frames 48 to move through several connecting columns 54. The U-shaped frames 48 abut against the outside of the truncated cone base 44 and push it to move. The truncated cone base 44 drives the guide tube 42 to move on the L-shaped frame 41. The second telescopic spring 46 is compressed by force. At this time, the suction cup 43 on the guide tube 42 abuts against the upper outside of the battery pack 49. Then, the piston rod of the cylinder 52 is controlled to reset, so that the two ends of the U-shaped frame 48 are separated from the outside of the truncated cone base 44. The second telescopic spring 46 drives the guide tube 42 to reset through the connecting block 45. The guide tube 42 pulls the opening of the battery pack 49 through the suction cup 43. S3. Filling: The output shaft of the first drive motor 26 drives the lead screw 23 to rotate. The lead screw 23 drives the slide 24 to slide on the support frame 21. The slide 24 drives several filling heads 25 to move downward to above the opening of the battery pack 49. Then, the electrolyte is drawn by the filling pump 27 and input into the inside of the filling head 25 through the pipeline. The electrolyte is then filled into the inside of the battery pack 49 through the filling head 25.

[0030] Those skilled in the art will understand that the features described in the various embodiments and / or claims of the present invention can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention can be combined or combined in various ways without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

Claims

1. A filling device for producing high-voltage boron-free electrolyte, characterized in that, include A fixing frame (1) is provided with a placement component on its top, and an injection component is provided on the top of the fixing frame (1) behind the placement component. The placement assembly includes a rotating shaft (31), a turntable (32), and several placement racks (33). The rotating shaft (31) is rotatably connected to the top of the fixed frame (1), the turntable (32) is fixedly connected to the top of the rotating shaft (31), and the several placement racks (33) are fixedly connected to the top of the turntable (32). Several placement slots (34) are provided on the top of each of the several placement racks (33), and limiting slots (35) are provided at the bottom of each of the several placement slots (34). The top of the frame (33) is fixedly connected to baffles (36) on both sides of several placement slots (34). Deep grooves (37) are opened on the front ends of the inner sides of several placement slots (34). Limiting posts (39) are slidably connected inside the deep grooves (37). A first telescopic spring (38) is fixedly connected between the limiting posts (39) and the deep grooves (37). A battery pack (49) is placed inside the limiting grooves (35). Opening components are provided on several sets of two baffles (36).

2. The filling device for producing high-voltage boron-free electrolyte according to claim 1, characterized in that, The opening assembly includes two L-shaped frames (41), two guide tubes (42), and two suction cups (43). The two L-shaped frames (41) are fixedly connected to the opposite sides of several sets of two baffles (36). The two guide tubes (42) are respectively movably passed through one side of the two L-shaped frames (41). The two suction cups (43) are installed at the opposite ends of the two guide tubes (42). A frustum base (44) is fixedly sleeved on one side of the L-shaped frame (41) on the two guide tubes (42). A connecting block (45) is fixedly sleeved on the other side of the L-shaped frame (41) on the two guide tubes (42). A connecting plate (47) is fixedly connected to the top rear side of the two baffles (36). A U-shaped frame (48) is slidably connected to the outside of the connecting plate (47) through a guide post.

3. The filling device for producing high-voltage boron-free electrolyte according to claim 2, characterized in that, A second telescopic spring (46) is movably sleeved on the outside of the guide tube (42). One end of the second telescopic spring (46) abuts against the other side of the L-shaped frame (41), and the other end of the second telescopic spring (46) abuts against one side of the connecting block (45).

4. The filling device for producing high-voltage boron-free electrolyte according to claim 2, characterized in that, Both ends of the U-shaped frame (48) are provided with arc-shaped grooves, and the two ends of the U-shaped frame (48) respectively abut against the outer sides of the two truncated cone bases (44).

5. The filling device for producing high-voltage boron-free electrolyte according to claim 1, characterized in that, The top of the turntable (32) is fixedly connected to several connecting frames (51), the top of the connecting frame (51) is fixedly connected to a cylinder (52), the piston rod of the cylinder (52) is fixedly connected to a bracket (53), and one side of the bracket (53) is fixedly connected to several connecting columns (54), and one end of each of the connecting columns (54) is fixedly connected to several U-shaped frames (48).

6. The filling device for producing high-voltage boron-free electrolyte according to claim 5, characterized in that, The inner top of the fixed frame (1) is equipped with a second drive motor (61), the output shaft of the second drive motor (61) is fixedly connected to one end of the rotating shaft (31), and an electric slip ring (62) is fixedly sleeved on the outer side of the rotating shaft (31). The outer ring of the electric slip ring (62) is fixedly connected to the top of the fixed frame (1).

7. The filling device for producing high-voltage boron-free electrolyte according to claim 6, characterized in that, The bottom of the turntable (32) is fixedly connected with several blocks (64), and the top of the fixing frame (1) is equipped with a photoelectric switch (63) located on the rear side of the turntable (32).

8. A filling device for producing high-voltage boron-free electrolyte according to claim 7, characterized in that, The electrical output terminal of the photoelectric switch (63) is connected to the electrical input terminal of the second drive motor (61), and the air outlet of the electrical slip ring (62) is connected to the air inlet of the cylinder (52) and the guide tube (42) respectively through pipes.

9. A filling device for producing high-voltage boron-free electrolyte according to claim 1, characterized in that, The infusion assembly includes a support frame (21), two fixed blocks (22) and a lead screw (23). The support frame (21) is fixedly connected to the top of the fixed frame (1) and located on the rear side of the turntable (32). The two fixed blocks (22) are fixedly connected to one side of the support frame (21). The lead screw (23) is rotatably connected between the two fixed blocks (22). A slide seat (24) is slidably connected to one side of the support frame (21). The slide seat (24) is threaded to the outside of the lead screw (23). Several infusion heads (25) are installed on the slide seat (24). A first drive motor (26) is installed on the top of the support frame (21). The output shaft of the first drive motor (26) is fixedly connected to one end of the lead screw (23) extending to the outside of one of the fixed blocks (22). Several infusion pumps (27) are installed inside the fixed frame (1). The outlets of the several infusion pumps (27) are connected to the several infusion heads (25) through pipes.

10. A method of using a filling device for producing high-voltage boron-free electrolyte according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Loading: The battery pack (49) is placed inside the limiting groove (35) by personnel and pushed to move the battery pack (49). The two limiting posts (39) are moved by force, and the first telescopic spring (38) in the deep groove (37) is compressed by force. When one side of the battery pack (49) moves and abuts against one side of the placement groove (34), one end of the limiting post (39) is separated from the outside of the battery pack (49). The first telescopic spring (38) drives the limiting post (39) to move and reset. The second drive motor (61) drives the turntable (32) to rotate through the rotating shaft (31). The turntable (32) drives the four stops (64) to rotate. When one of the stops (64) moves to one end of the photoelectric switch (63), the photoelectric switch (63) controls the second drive motor (61) to stop running. S2, unfold. When the battery pack (49) moves directly below the filling head (25), the piston rod of the cylinder (52) extends and pushes the bracket (53) to move. The bracket (53) pushes several U-shaped frames (48) to move through several connecting columns (54). The U-shaped frames (48) abut against the outside of the truncated cone (44) and push it to move. The truncated cone (44) drives the guide tube (42) to move on the L-shaped frame (41). The second telescopic spring (46) is compressed under force. At this time, the suction cup (43) on the guide tube (42) abuts against the upper outside of the battery pack (49). Then, the piston rod of the cylinder (52) is controlled to reset, so that the two ends of the U-shaped frame (48) are separated from the outside of the truncated cone (44). The second telescopic spring (46) drives the guide tube (42) to reset through the connecting block (45). The guide tube (42) pulls the opening of the battery pack (49) through the suction cup (43). S3. Injection: The output shaft of the first drive motor (26) drives the lead screw (23) to rotate. The lead screw (23) drives the slide (24) to slide on the support frame (21). The slide (24) drives several injection heads (25) to move downward to above the opening of the battery pack (49). Then, the electrolyte is extracted by the injection pump (27) and input into the inside of the injection head (25) through the pipeline. The electrolyte is then injected into the inside of the battery pack (49) through the injection head (25).

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