Formation clamp of horizontal type soft package battery cell

Abstract

A formation clamp of a horizontal type soft package battery cell comprises a base, a driving mechanism and two clamping mechanisms, the two clamping mechanisms are arranged in a left-right spaced mode, the base comprises a driving frame, a stop frame and a plurality of sliding plates, the sliding plates are arranged in a front-back spaced mode, the driving mechanism is arranged on the driving frame, and each clamping mechanism comprises a clamping frame, a plurality of force application assemblies and a plurality of supporting frames. The clamping frame is arranged on the base in a left-right moving mode, the multiple supporting frames are connected with the multiple sliding plates respectively and all arranged on the clamping frame, the force application assembly is located between every two adjacent supporting frames, and each force application assembly comprises a pressing piece, a circuit board and a buffering elastic piece, and the pressing pieces and the circuit boards are oppositely arranged front and back; the two ends of the buffering elastic piece abut against the pressing piece and the supporting frame respectively. The formation clamp disclosed by the utility model can be suitable for horizontal type soft package battery cells with different widths, is high in universality, and can reduce the possibility of battery cell breakage caused by clamping position deviation at the same time.

Description

Technical Field

[0001] The utility model relates to a formation fixture, in particular to a formation fixture for a horizontal soft-pack battery cell. Background Art

[0002] When producing horizontal soft-pack batteries, it is necessary to perform a formation process on the battery cells to form a protective film on the positive and negative tabs of the battery cells. Before using the formation equipment for the formation process, it is necessary to first use a clamp to fix the battery cells. Specifically, the clamp is provided with two clamping mechanisms set at left and right intervals, and the two clamping mechanisms are used to clamp the left and right ends of the battery cells respectively. At the same time, the clamping mechanism is provided with a circuit board, and the circuit board is used to connect the positive and negative tabs of the battery cells for power supply. For example: a battery formation air compressor clamp machine disclosed in Chinese utility model CN218827359U, and a fully automatic reverse-biased load battery formation machine clamp mechanism disclosed in Chinese utility model CN221352876U.

[0003] However, most existing formation fixtures cannot adjust the distance between the two clamping mechanisms, making them unsuitable for battery cells of varying widths. Furthermore, since horizontal pouch cells are soft, if the clamping position is too close to the center of the cell, the cell may rupture, leading to electrolyte leakage. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to design a formation fixture for horizontal soft-pack battery cells, which can clamp battery cells of different widths and reduce the possibility of battery cell rupture.

[0005] To achieve the above-mentioned purpose, the utility model provides a formation fixture for horizontal soft-pack battery cells, comprising: a base, a driving mechanism and two clamping mechanisms, the two clamping mechanisms are arranged at a left-right interval, the base comprises: a driving frame, a stop frame and a plurality of slides, the plurality of slides are arranged at a front-to-back interval between the driving frame and the stop frame and the front-to-back distance between adjacent slides is variable, the driving mechanism is arranged on the driving frame to provide a backward thrust to the frontmost slide, the clamping mechanism comprises: a clamping frame, a plurality of force-applying components and a plurality of support frames, the plurality of support frames are all arranged on the clamping frame and are respectively connected to the plurality of slides, the force-applying component is located between two adjacent support frames, the force-applying component comprises: a pressure piece and a circuit board, the pressure piece and the circuit board are respectively fixed to two adjacent support frames and are arranged relative to each other front and back; the clamping frame can be movably arranged on the base left and right, the force-applying component also comprises: a buffer elastic piece, the two ends of the buffer elastic piece are respectively in contact with the pressure piece and the support frame.

[0006] Furthermore, the base further includes a plurality of guide rods and guide sleeves arranged front to back, with at least two guide rods disposed between the drive frame and the stop frame and spaced apart from each other. The guide sleeves are mounted on the guide rods, and the frontmost and rearmost slides are fixedly connected to the at least two guide sleeves. The cooperation between the guide rods and the guide sleeves ensures smoother and more stable movement of the slides.

[0007] Furthermore, the base also includes a force-bearing screw and a force-bearing elastic member. The force-bearing screw is fixedly connected to the frontmost slide and is arranged toward the drive mechanism. The force-bearing elastic member is fixedly connected to the stop frame and is located between the stop frame and the rearmost slide. Using the force-bearing screw instead of the frontmost slide to bear the force reduces the possibility of damage to the frontmost slide. The force-bearing elastic member acts as a buffer, thereby reducing the possibility of the battery cell being crushed due to excessive pressure.

[0008] Furthermore, there are multiple stressed screws; the drive mechanism includes a motor, a reducer, a screw, and a push plate. The motor and reducer are both fixed to a drive frame. The motor and screw are connected via the reducer to drive the screw forward and backward. The screw is fixedly connected to the push plate, and the push plate is arranged in a front-to-back relationship with all the stressed screws. The push plate can simultaneously push all the stressed screws, and the forces on each stressed screw are balanced.

[0009] Furthermore, the base further comprises a locking plate, which is detachably fixedly connected to all the slides. The locking plate is used to lock each slide before operation, thereby preventing the user's hand from being pinched due to incorrect operation when placing the battery cell.

[0010] Furthermore, the clamping mechanism further includes: a plurality of adjustment blocks and a plurality of adjustment screws; the clamping frame is provided with at least two adjustment frames arranged at a front-to-back spacing; two adjustment blocks are respectively disposed in the two adjustment frames for left and right movement and are respectively fixedly connected to the drive frame and the stop frame; the side walls of the adjustment frames are provided with adjustment screw holes; the adjustment screws are threadedly engaged with the adjustment screw holes and rotationally connected to the adjustment blocks. The left and right positions of the clamping mechanism can be adjusted by the cooperation of the adjustment blocks and the adjustment screws, thereby adapting the distance between the two clamping mechanisms to the width of the battery cell.

[0011] Furthermore, the clamping frame is further provided with sliding rods arranged front and back, and the support frame is provided with a sliding frame, and the sliding rods pass through the sliding frame. The cooperation between the sliding rods and the sliding frame can make the movement of the support frame smoother and more stable.

[0012] Furthermore, at least one support frame is provided with a plurality of fine-tuning screw holes, with at least two of the fine-tuning screw holes being located on the left and right surfaces of the support frame, respectively. The pressure piece is provided with a plurality of strip-shaped holes arranged front to back, with at least two of the strip-shaped holes being directly opposite the two fine-tuning screw holes, respectively. The force-applying assembly further includes a fine-tuning screw that passes through the strip-shaped holes and is threadedly engaged with the fine-tuning screw holes. The distance between the pressure piece and the circuit board can be adjusted by adjusting the relative position of the fine-tuning screw and the strip-shaped hole, thereby accommodating battery cells of varying thicknesses.

[0013] Furthermore, the pressing piece is provided with a rubber layer, and the rubber layer is located on the surface of the pressing piece away from the support frame. The provision of the rubber layer can protect the battery cell and reduce the possibility of crushing the battery cell.

[0014] Furthermore, there are multiple buffer elastic members, which are equidistantly arranged vertically. The provision of multiple buffer elastic members equidistantly arranged vertically can achieve a balanced buffering effect, thereby improving the protection effect on the battery cell.

[0015] After adopting the above technical solution, the beneficial effect is: the formation fixture of the utility model can adapt to horizontal soft-pack battery cells of different widths by adjusting the distance between the two clamping mechanisms. It has strong versatility and is also provided with a buffering elastic part with a buffering effect. Even after adjusting the distance between the two clamping mechanisms, the clamping position is slightly biased towards the middle of the battery cell, which can reduce the possibility of battery cell rupture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a formation fixture according to the present invention;

[0017] Figure 2 A schematic diagram of the base involved in the present utility model;

[0018] Figure 3 A schematic diagram of the driving mechanism involved in the present utility model;

[0019] Figure 4 A schematic diagram of the clamping mechanism involved in the present utility model;

[0020] Figure 5 This is a schematic diagram of the support frame involved in the present utility model.

[0021] The accompanying drawings are marked as follows: 100, battery cell; 1, base; 11, drive frame; 12, stop frame; 13, skateboard; 14, guide rod; 15, guide sleeve; 16, force screw; 17, force elastic member; 18, lock plate; 2, drive mechanism; 21, motor; 22, reducer; 23, screw rod; 24, push plate; 3, clamping mechanism; 31, clamping frame; 311, slide rod; 312, adjustment frame; 32, force-applying component; 321, pressure piece; 3211, rubber layer; 3212, strip hole; 322, circuit board; 323, buffer elastic member; 33, support frame; 331, slide frame; 332, fine-tuning screw hole; 34, adjustment block; 35, adjustment screw. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below by way of embodiments:

[0023] The utility model provides a horizontal soft-pack battery formation fixture, such as Figure 1 As shown, the formation fixture includes: a base 1, a driving mechanism 2 and two clamping mechanisms 3, the driving mechanism 2 and the two clamping mechanisms 3 are all arranged on the base 1, the two clamping mechanisms 3 are arranged at a left-right spacing, and the driving mechanism 2 is located at the front side of the two clamping mechanisms 3 for driving the two clamping mechanisms 3 to clamp a plurality of battery cells 100. During operation, the formation fixture is installed in the formation equipment, and a plurality of battery cells 100 are placed between the two clamping mechanisms 3. The driving mechanism 2 is used to drive the two clamping mechanisms 3 to clamp the two ends of the battery cells 100 respectively, thereby fixing the battery cells 100, and power is supplied to the tabs of the battery cells 100 to cooperate with the completion of the formation process.

[0024] Specifically, if Figure 2As shown, the base 1 comprises a driving frame 11, a stop frame 12, a plurality of sliding plates 13, a plurality of front and rear arranged guide rods 14, a plurality of guide sleeves 15, force screws 16, force elastic members 17 and lock plates 18, the driving frame 11 and the stop frame 12 are arranged with front and rear spacing, at least two guide rods 14 are arranged between the driving frame 11 and the stop frame 12 and arranged with left and right spacing, the plurality of sliding plates 13 are arranged with front and rear spacing and are movably arranged in the guide rods 14, the number of the guide sleeves 15 is twice the number of the guide rods 14, the frontmost sliding plate 13 and the rearmost sliding plate 13 are both fixedly connected with at least two guide sleeves 15, the guide sleeves 15 are annularly arranged on the guide rods 14, the force screws 16 are fixedly connected with the frontmost sliding plate 13 and arranged towards the driving mechanism 2, the force elastic members 17 are fixedly connected with the stop frame 12 and located between the stop frame 12 and the rearmost sliding plate 13, the lock plates 18 are detachably fixedly connected with all the sliding plates 13, the driving mechanism 2 is arranged in the driving frame 11, and the two clamping mechanisms 3 are both connected with the plurality of sliding plates 13. Before working, first place the battery cell 100 between the adjacent two sliding plates 13, and then detach the lock plates 18; during working, use the driving mechanism 2 to push the force screws 16 to make the frontmost sliding plate 13 move backward, so as to make the plurality of middle sliding plates 13 successively move a small distance backward, the rearmost sliding plate 13 only moves a very small distance due to the action force of the force elastic members 17, thereby reducing the distance between the adjacent sliding plates 13, and finally making the two clamping mechanisms 3 clamp the two ends of the battery cell 100 respectively and supply power to the positive and negative tabs of the battery cell 100 respectively.

[0025] In the embodiment, the sliding plates 13 are thirty-four, which can fix thirty-three battery cells 100 at the same time, and in other embodiments, the sliding plates 13 can also be other numbers, but at least two, that is, at least fix one battery cell 100; the guide rods 14 are four, the guide sleeves 15 are eight, and the four guide rods 14 are arranged in a matrix; the force screws 16 are three, and the three force screws 16 are arranged in a triangle; the force elastic members 17 are eight, and the force elastic members 17 are springs, and in other embodiments, the force elastic members 17 can also be other elastic components, such as elastic sheets; the lock plates 8 are four, two lock plates 8 are fixedly connected with the left surfaces of all the sliding plates 13, and the other two lock plates 8 are fixedly connected with the right surfaces of all the sliding plates 13.

[0026] More specifically, as Figure 3As shown, the drive mechanism 2 includes: a motor 21, a reducer 22, a screw 23 and a push plate 24. The motor 21 and the reducer 22 are both fixed to the drive frame 11. The motor 21 is connected to the screw 23 through the reducer 22 to drive the screw 23 to move forward and backward. The screw 23 is fixedly connected to the push plate 24, and the push plate 24 is arranged relative to the front-most slide 13. During operation, the reducer 22 is used to convert the rotational motion of the motor shaft into the linear motion of the screw 23, and the screw 23 drives the push plate 24 to move backward, pushing the front-most slide 13 to move backward, so that the clamping mechanism 3 presses the end of the battery cell 100; after the formation process is completed, the push plate 24 moves forward and no longer applies force to the front-most slide 13, so that the clamping mechanism 3 releases the end of the battery cell 100.

[0027] As a preferred solution, the push plate 24 and all the force-bearing screws 16 are arranged front to back relative to each other.

[0028] More specifically, if Figure 4 As shown, the clamping mechanism 3 includes: a clamping frame 31, multiple force-applying components 32, multiple support frames 33, multiple adjustment blocks 34 and multiple adjustment screws 35. The clamping frame 31 is provided with a sliding rod 311 arranged in front and back and at least two adjustment frames 312 arranged at a front and back interval. The multiple support frames 33 are all arranged on the sliding rod 311 and are respectively connected to the multiple slides 13. The force-applying component 32 is located between two adjacent support frames 33. The two adjustment blocks 34 are respectively movably arranged in the two adjustment frames 312 left and right and are respectively fixedly connected to the driving frame 11 and the stop frame 12. The side wall of the adjustment frame 312 is provided with an adjustment screw hole. The adjustment screw 35 is screwed to the adjustment screw hole and is rotatably connected to the adjustment block 34. Before work, the two adjustment screws 35 can be rotated to make the two adjustment frames 312 of the clamping frame 31 move left and right relative to the two adjustment blocks 34, thereby adjusting the left and right position of the clamping mechanism 3; during work, the end of the battery cell 100 is located at the position corresponding to the force-applying component 32, and the driving mechanism 2 is used to reduce the distance between adjacent slides 13, thereby reducing the distance between adjacent support frames 33, and then clamping the end of the battery cell 100.

[0029] In this embodiment, the slide plate 13 passes through the support frame 33 in the left-right direction to drive the support frame 33 to move forward and backward; the number of the force-applying components 32 is one less than the number of the support frames 33.

[0030] In this embodiment, the clamping mechanism 3 has two adjusting blocks 34 and two adjusting screws 35 , and also two adjusting frames 312 . In other embodiments, the above components may also be three or more.

[0031] Although in this embodiment, all the slides 13 and all the support frames 33 are movably arranged, in other embodiments, the rearmost slide 13 and the rearmost support frame 33 may also be fixedly arranged.

[0032] More specifically, if Figure 5 As shown, the force-applying assembly 32 includes a pressing member 321, a circuit board 322, and a buffer elastic member 323. The pressing member 321 and the circuit board 322 are respectively fixed to two adjacent support frames 33 and arranged in a front-to-back relationship. The ends of the buffer elastic member 323 abut against the pressing member 321 and the support frame 33, respectively. During operation, the pressing member 321 of the force-applying assembly 32 cooperates with the circuit board 322 of the adjacent force-applying assembly 32 to press the end of the battery cell 100, compressing the buffer elastic member 323 and electrically connecting the circuit board 322 to the tab of the battery cell 100.

[0033] In this embodiment, the pressing member 321 is located at the rear side of the circuit board 322 . In other embodiments, the pressing member 321 may be located at the front side of the circuit board 322 .

[0034] In this embodiment, the buffer elastic member 323 is a spring. In other embodiments, the buffer elastic member 323 may also be other elastic members, such as a spring.

[0035] As a preferred solution, there are multiple buffer elastic members 323, and the multiple buffer elastic members 323 are equidistantly arranged vertically.

[0036] More specifically, the support frame 33 is provided with a sliding frame 331 and a plurality of fine-tuning screw holes 332. The sliding rod 311 passes through the sliding frame 331. At least two fine-tuning screw holes 332 are located on the left and right surfaces of the support frame 33, respectively. The pressure piece 321 is provided with a rubber layer 3211 and a plurality of strip holes 3212 arranged front to back. The rubber layer 3211 is located on the surface of the pressure piece 321 facing away from the support frame 33. At least two strip holes 3212 are respectively opposite to the left and right sides of the two fine-tuning screw holes 332. The force-applying assembly 32 also includes a fine-tuning screw (not shown) that passes through the strip holes 3212 and is screwed into the fine-tuning screw holes 332. Before operation, the relative position of the fine-tuning screw and the strip holes 3212 can be adjusted to adjust the front and rear position of the pressure piece 321. During operation, the sliding frame 331 moves backward relative to the sliding rod 311, and the rubber layer 3211 contacts the end of the battery cell 100.

[0037] In this embodiment, the clamping frame 31 has two slide bars 311 , which are spaced apart from each other. The supporting frame 33 also has two slide frames 331 , which are spaced apart from each other.

[0038] In this embodiment, there are four fine-tuning screw holes 332 of the support frame 33, two of which are located on the left surface of the support frame 33 and are arranged at intervals up and down, and the other two fine-tuning screw holes 332 are located on the right surface of the support frame 33 and are arranged at intervals up and down; there are also four strip holes 3212 of the pressing piece 321.

Claims

1. A formation fixture for a horizontal soft-pack battery cell, comprising: The cam is mounted on a base, wherein the cam is mounted on two opposite sides of the cam, and the cam is mounted on two opposite sides of the cam. The cam is mounted on two opposite sides of the cam. The cam is mounted on two opposite sides of the cam.

2. The formation fixture for a horizontal soft-pack battery cell according to claim 1, characterized in that: The base also includes: a plurality of guide rods and a plurality of guide sleeves arranged front to back, at least two guide rods are arranged between the drive frame and the stop frame and are arranged at left and right intervals, the guide sleeve ring is arranged on the guide rods, and the frontmost slide and the rearmost slide are both fixedly connected to at least two guide sleeves.

3. The formation fixture for a horizontal soft-pack battery cell according to claim 1, characterized in that: The base also includes: a force-bearing screw and a force-bearing elastic member, the force-bearing screw is fixedly connected to the frontmost slide and arranged toward the driving mechanism, and the force-bearing elastic member is fixedly connected to the stop frame and is located between the stop frame and the rearmost slide.

4. The formation fixture for a horizontal soft-pack battery cell according to claim 3, characterized in that: There are multiple force-bearing screws; the driving mechanism includes: a motor, a reducer, a screw and a push plate, the motor and the reducer are fixed to the driving frame, the motor and the screw are connected through the reducer to drive the screw to move back and forth, the screw is fixedly connected to the push plate, and the push plate is arranged relative to all the force-bearing screws in front and back.

5. The formation fixture for a horizontal soft-pack battery cell according to claim 1, characterized in that: The base further comprises a locking plate which is detachably fixedly connected to all the slide plates.

6. The formation fixture for a horizontal soft-pack battery cell according to claim 1, characterized in that: The clamping mechanism also includes: multiple adjustment blocks and multiple adjustment screws; the clamping frame is provided with at least two adjustment frames arranged at a front-to-back interval, the two adjustment blocks are respectively arranged in the two adjustment frames so as to be movable left and right and are respectively fixedly connected to the driving frame and the stop frame, the side walls of the adjustment frames are provided with adjustment screw holes, the adjustment screws are screwed into the adjustment screw holes and are rotationally connected to the adjustment blocks.

7. The formation fixture for a horizontal soft-pack battery cell according to claim 1, characterized in that: The clamping frame is further provided with sliding rods arranged front and back, and the supporting frame is provided with a sliding frame, and the sliding rods pass through the sliding frame.

8. The formation fixture for a horizontal soft-pack battery cell according to claim 1, characterized in that: At least one support frame is provided with multiple fine-tuning screw holes, at least two of which are respectively located on the left and right surfaces of the support frame; the pressure piece is provided with multiple strip holes arranged front to back, at least two of which are respectively opposite to the two fine-tuning screw holes on the left and right; the force-applying component also includes: a fine-tuning screw, which passes through the strip hole and is screwed to the fine-tuning screw hole.

9. The formation fixture for a horizontal soft-pack battery cell according to claim 1, characterized in that: The pressing piece is provided with a rubber layer, and the rubber layer is located on the surface of the pressing piece facing away from the supporting frame.

10. The formation fixture for a horizontal soft-pack battery cell according to claim 1, characterized in that: There are multiple buffer elastic members, and the multiple buffer elastic members are equidistantly arranged up and down.

Images