A soft-pack battery cell and a formation fixture

Abstract

This utility model discloses a soft-pack battery cell and a formation fixture. The soft-pack battery cell includes a battery body with a reserved portion connected to the side of the battery body. The width w4 of the reserved portion is smaller than the width w3 of the battery body. The reserved portion is provided with a venting component that can communicate with the outside. The fixture includes a mounting block, an upper limit component, and a lower limit component. The upper limit component and the lower limit component are located on the same side of the mounting block and are arranged vertically. The lower limit component is used to limit the battery body, and the upper limit component is used to limit the reserved portion. The upper limit component is provided with a groove for fixing the venting component. This utility model can timely discharge the generated gas, reduce the amount of aluminum-plastic film used, and allow for single and double electrolyte injection.

Description

Technical Field

[0001] This utility model relates to the field of pouch battery technology, and in particular to a pouch battery cell and a formation fixture. Background Technology

[0002] Lithium-ion and sodium-ion batteries are widely used in electric vehicles, electrochemical energy storage, 3C products and other fields. According to the battery structure, they can be divided into pouch batteries, cylindrical batteries and square aluminum-cased batteries. Among them, pouch batteries have high energy density, flexible design and good safety, and occupy an important position in lithium-ion and sodium-ion batteries. The development of semi-solid and solid-state battery technology will also drive the proportion of pouch models to increase further.

[0003] The common manufacturing process of soft-pack batteries, after the stacking process is completed, mainly includes the following steps: "assembly → battery baking → electrolyte injection → sealing → high-temperature standing → formation → aging → second sealing → shaping → capacity → K value → silo loading". Among them, "sealing" requires a large area of ​​gas bag to be reserved, which consumes a lot of aluminum-plastic film material to contain the gas generated during the formation process. "Formation" cannot be performed with negative pressure venting. Before "capacity", it is not possible to perform a second electrolyte injection process like aluminum-cased batteries and cylindrical batteries to improve the overall performance of the battery.

[0004] Both aluminum-cased and cylindrical batteries have an injection port design, which is sealed with rubber and aluminum nails to isolate external air and moisture. The injection port allows for primary and secondary injections, with slightly different compositions for the two injections. After the primary injection, formation is carried out, mainly to form a stable interfacial film on the surfaces of the positive and negative electrodes to ensure long-term cycling. The secondary injection is carried out after formation, mainly to improve the overall performance of the battery. In addition, during the formation stage, gas can be discharged through the injection port to further improve the positive and negative electrode interface.

[0005] Patent CN214099688U discloses a soft-pack lithium-ion battery formation fixture, which not only allows the gas generated during formation to be squeezed and discharged to the gas bag, which is beneficial for the close contact between the separator and the positive and negative electrodes during formation and thus optimizes the electrode interface, but also allows for online monitoring of the battery body expansion and gas generation through pressure and distance sensors, further studying the battery state during the formation process. However, this soft-pack battery structure still maintains the "battery body + battery gas bag" design, and the gas generated during the formation stage still exists inside the battery, making it impossible to perform a secondary liquid replenishment process. Utility Model Content

[0006] The purpose of this utility model is to provide a soft-pack battery cell and a formation fixture, which solves the problems of gas not being able to be discharged in time and secondary liquid replenishment being impossible in the existing soft-pack battery cell formation process.

[0007] This utility model is implemented as follows: This utility model provides a soft-pack battery cell, including a battery body, a reserved portion is provided on the side of the battery body, the width w4 of the reserved portion is smaller than the width w3 of the battery body, and an exhaust component that can communicate with the outside is provided on the reserved portion.

[0008] Existing pouch cells such as Figure 1 As shown, the battery includes a battery body and a battery gas bag. The battery gas bag is used to absorb the gas generated during the formation stage, and its size is basically the same as that of the battery body. This not only consumes a large amount of aluminum-plastic film, but also keeps the gas inside the pouch cell. To address the above-mentioned problems of existing pouch cells, this utility model has a reserved portion connected to the side of the battery body. The purpose of the reserved portion is to collect the gas generated during the formation of the battery body and then discharge it through the venting assembly. Therefore, the size of the reserved portion is smaller than that of the battery body, saving aluminum-plastic film and achieving the purpose of cost reduction. Moreover, the gas generated by the battery body can be discharged through the venting assembly, avoiding the gas from staying inside the pouch cell and ensuring a good battery interface. In addition, primary and secondary electrolyte injection can be performed through the venting assembly, improving the overall performance of the battery.

[0009] A further technical solution of this utility model is: the exhaust assembly is located on the side of the reserved portion away from the battery body, the exhaust assembly includes a straw and a rubber stopper, one end of the straw is connected to the middle of the reserved portion and the other end is detachably connected to the rubber stopper.

[0010] The rubber stopper can selectively block the straw, isolating it from external air and moisture.

[0011] This utility model also provides a soft-pack battery cell formation fixture, wherein the soft-pack battery cell includes the aforementioned soft-pack battery cell, and the fixture includes a mounting block, an upper limit component, and a lower limit component. The upper limit component and the lower limit component are located on the same side of the mounting block and are arranged vertically. The lower limit component is used to limit the battery body, and the upper limit component is used to limit the reserved portion. The upper limit component is provided with a groove, which is used to fix the venting component.

[0012] The upper and lower limit components are respectively set at the upper and lower ends of the mounting block. The battery tabs of the pouch cell face the Y direction, with the main body of the battery at the bottom and the reserved part at the top. The main body of the battery is clamped and limited by the lower limit component, and the reserved part is clamped and limited by the upper limit component. At the same time as the upper limit component is clamped and limited, the venting component is inserted into the reserved part and clamped and limited by the groove of the upper limit component. This ensures that the gas generated by the pouch cell during the formation stage is collected in the reserved part and then discharged in time through the venting component, thus improving the battery interface.

[0013] A further technical solution of this utility model is: a gap is provided between the upper limit component and the lower limit component, the height of the gap is h, and w4 is greater than h.

[0014] The height of the gap is less than the width of the reserved part, in order to ensure that the top of the reserved part can be smoothly clamped and limited by the upper limit component.

[0015] A further technical solution of this utility model is: the upper limit component includes a first upper slider, a second upper slider, an upper slider track, and a first adjusting member. The first adjusting member is disposed on the mounting block and is used for the second upper slider to slide along the upper slider track toward the first upper slider.

[0016] The first and second upper sliders are respectively located on both sides of the mounting block. When the second upper slider slides along the slider track toward the first upper slider, it clamps and limits the reserved part.

[0017] A further technical solution of this utility model is: both the first upper slider and the second upper slider include an upper slider body and an upper slider terminal placed at the end of the upper slider body. The upper slider terminal passes through the upper slider slide rail. One end of the first adjusting member is threadedly connected to the mounting block and connected to the upper slider terminal on the second upper slider.

[0018] By rotating the first adjusting component, the second upper slider moves along the upper slider rail, moving closer to or further away from the first upper slider, making adjustment convenient and highly stable.

[0019] A further technical solution of this utility model is: the groove is placed on the opposite side of the first upper slider and the second upper slider.

[0020] When the first and second upper sliders approach each other, the reserved portion is clamped. At this time, the venting assembly is clamped in the groove, so that the entire soft-pack battery cell is clamped, which facilitates subsequent operations.

[0021] A further technical solution of this utility model is: the lower limit component includes a first lower slider, a second lower slider, a lower slider slide rail, and a second adjusting member, the second adjusting member being disposed on the mounting block and used for the second lower slider to slide along the lower slider slide rail toward the first lower slider.

[0022] Rotating the second adjusting component moves the second lower slider closer to the first lower slider, clamping the battery body placed between the first and second lower sliders.

[0023] A further technical solution of this utility model is: both the first lower slider and the second lower slider include a lower slider body and a lower slider terminal placed at the end of the lower slider body. The lower slider terminal passes through the lower slider slide rail. One end of the second adjusting member is threadedly connected to the mounting block and connected to the lower slider terminal on the second lower slider.

[0024] Specifically, the second adjusting member rotates and presses the second lower slider, causing the second lower slider to slide along the lower slider rail, thereby adjusting the distance between the first lower slider and the second lower slider.

[0025] The beneficial effects of this utility model are as follows: A reserved portion is provided on the side of the battery body. The purpose of this reserved portion is to collect the gas generated during the battery body's formation and then discharge it through the venting assembly. Therefore, the size of the reserved portion is smaller than that of the battery body, saving aluminum-plastic film and achieving cost reduction. Furthermore, the gas generated by the battery body can be discharged through the venting assembly, preventing the gas from remaining inside the soft-pack cell and ensuring a good battery interface. In addition, primary and secondary electrolyte injection can be performed through the venting assembly, improving the overall performance of the battery.

[0026] This utility model relates to the upgrading of the sample preparation device and the optimization of the sample preparation process for pouch batteries. It can ensure that the gas generated during the formation of pouch batteries is discharged in a timely manner to ensure a good battery interface; it can also simplify the sample preparation process of pouch batteries and save the amount of aluminum-plastic film used to achieve the purpose of cost reduction; it can also perform primary and secondary liquid injection to improve the overall performance of the battery.

[0027] The soft-pack battery can be filled with liquid once and twice using a pipette, which not only forms a stable interfacial film on the surface of the positive and negative electrode plates, ensuring long cycle life, but also improves the overall performance of the soft-pack battery.

[0028] The manufacturing process of soft-pack batteries can eliminate the need for battery gas bags, retaining only a reserved portion, thus saving on the amount of aluminum-plastic film used.

[0029] The manufacturing process of soft-pack batteries has been simplified, requiring only one sealing after secondary electrolyte injection. Attached Figure Description

[0030] Figure 1 This is a comparison of schematic diagrams of existing pouch cells provided by this utility model and schematic diagrams of pouch cells of this utility model; wherein... Figure 1 (a) is the existing technology roadmap. Figure 1 (b) is the roadmap of this utility model;

[0031] Figure 2 This is a schematic diagram of the structure of a soft-pack battery cell formation fixture provided by this utility model;

[0032] Figure 3This is a structural diagram of the first and second adjusting components provided by this utility model before installation;

[0033] Figure 4 This is a cross-sectional view of the mounting block in the Z direction provided by this utility model.

[0034] Reference numerals: A. Battery body, B. Reserved part, 1. Mounting block, 2. First upper slider, 3. Upper slider body, 4. Groove, 5. Upper slider terminal, 6. Second upper slider, 7. First lower slider, 8. Second lower slider, 9. Lower slider body, 10. Lower slider terminal, 11. First adjusting component, 12. Second adjusting component, 13. Straw, 14. Rubber stopper, 15. Upper slider slide, 16. Lower slider slide, 17. Upper threaded hole, 18. Lower threaded hole. Detailed Implementation

[0035] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0036] Example 1:

[0037] like Figure 1 The illustrated soft-pack battery cell includes a battery body A, characterized in that: a reserved portion B is provided on the side of the battery body A, the width w4 of the reserved portion B is smaller than the width w3 of the battery body A, and an exhaust component that can communicate with the outside is provided on the reserved portion B.

[0038] Existing pouch cells such as Figure 1 As shown in (a), the battery includes a battery body and a battery gas bag. The battery gas bag is used to absorb the gas generated during the formation stage, and its size is basically the same as that of the battery body. This not only consumes a large amount of aluminum-plastic film, but also keeps the gas inside the soft-pack cell. To address the above-mentioned problems of existing soft-pack cells, this utility model provides a reserved portion on the side of the battery body. The purpose of the reserved portion is to collect the gas generated during the formation of the battery body and discharge it through the venting assembly. Therefore, the size of the reserved portion is smaller than that of the battery body, saving aluminum-plastic film and achieving the purpose of cost reduction. Moreover, the gas generated by the battery body can be discharged through the venting assembly, avoiding the gas from staying inside the soft-pack cell and ensuring a good battery interface. In addition, primary and secondary liquid injection can be performed through the venting assembly to improve the overall performance of the battery.

[0039] In this embodiment, the exhaust assembly is located on the side of the reserved portion B away from the battery body A. The exhaust assembly includes a straw 13 and a rubber stopper 14. One end of the straw 13 is connected to the middle of the reserved portion B, and the other end is detachably connected to the rubber stopper 14.

[0040] The rubber stopper can selectively block the straw, isolating it from external air and moisture.

[0041] Existing soft-pack battery cells, such as Figure 1 As shown in (a), before formation, a battery air bag is connected to one side of the battery body, and the battery air bag is removed during the "second sealing" process; while the soft-pack battery in this utility model, as Figure 1 As shown in (b), after the formation is completed, aging can be carried out, and then secondary liquid injection can be carried out through the venting component to improve the overall performance of the battery. Then, the process of "sealing → shaping → capacity → K value → lowering into the chamber" is carried out to complete the preparation of the soft pack battery.

[0042] Example 2:

[0043] like Figure 1-4 The diagram shows a soft-pack battery cell formation fixture. The soft-pack battery cell includes the soft-pack battery cell described in Embodiment 1. The fixture includes a mounting block 1, an upper limit component, and a lower limit component. The upper limit component and the lower limit component are located on the same side of the mounting block 1 and are arranged vertically. The lower limit component is used to limit the battery body A, and the upper limit component is used to limit the reserved portion B. The upper limit component is provided with a groove 4, which is used to fix the venting component.

[0044] The upper and lower limit components are respectively set at the upper and lower ends of the mounting block. The battery tabs of the pouch cell face the Y direction, with the main body of the battery at the bottom and the reserved part at the top. The main body of the battery is clamped and limited by the lower limit component, and the reserved part is clamped and limited by the upper limit component. At the same time as the upper limit component is clamped and limited, the venting component is inserted into the reserved part and clamped and limited by the groove of the upper limit component. This ensures that the gas generated by the pouch cell during the formation stage is collected in the reserved part and then discharged in time through the venting component, thus improving the battery interface.

[0045] In this embodiment, the mounting block 1 is cubic in shape, and the upper limit component and the lower limit component are arranged vertically on the front side of the mounting block 1.

[0046] In this embodiment, a gap is provided between the upper limit component and the lower limit component, the height of the gap is h, and w4 is greater than h.

[0047] The height of the gap is less than the width of the reserved part, in order to ensure that the top of the reserved part can be smoothly clamped and limited by the upper limit component.

[0048] In this embodiment, the battery body is limited between the lower limit components, and the reserved part needs to pass through the gap between the upper limit component and the lower limit component until the upper limit component is clamped and limited.

[0049] In this embodiment, the thickness of the battery body is greater than the thickness of the reserved portion.

[0050] In this embodiment, the upper limit component includes a first upper slider 2, a second upper slider 6, an upper slider track 15, and a first adjusting member 11. The first adjusting member 11 is disposed on the mounting block 1 and is used for the second upper slider 6 to slide along the upper slider track 15 toward the first upper slider 2.

[0051] The first and second upper sliders are respectively located on both sides of the mounting block. When the second upper slider slides along the slider track toward the first upper slider, it clamps and limits the reserved part.

[0052] In this embodiment, both the first upper slider 2 and the second upper slider 6 include an upper slider body 3 and an upper slider terminal 5 located at the end of the upper slider body 3. The upper slider terminal 5 passes through the upper slider slide rail 15. One end of the first adjusting member 11 is threadedly connected to the mounting block 1 and connected to the upper slider terminal 5 on the second upper slider 6.

[0053] By rotating the first adjusting component, the second upper slider moves along the upper slider rail, moving closer to or further away from the first upper slider, making adjustment convenient and highly stable.

[0054] In this embodiment, the first adjusting member 11 includes a handle end and a main body. The main body is provided with external threads. The end of the mounting block 1 has a thickness of d1 and is provided with a threaded hole that mates with the main body of the first adjusting member 11. The handle end is located on the outside of the mounting block 1 for easy rotation and adjustment.

[0055] In this embodiment, the first upper slider 2 is fixed to the mounting block 1 via the upper slider terminal 5, and the second upper slider 6 is slidably connected to the upper slider track 15 via the upper slider terminal 5. The first adjusting member 11 passes through the side of the mounting block 1 with a thickness d1 from one end of the mounting block 1 and is connected to the upper slider terminal 5 on the second upper slider 6. By rotating the first adjusting member 11, the second upper slider 6 can slide along the upper slider track 15 to realize the distance adjustment between the first upper slider 2 and the second upper slider 6.

[0056] In this embodiment, the groove 4 is placed on the opposite side of the first upper slider 2 and the second upper slider 6.

[0057] When the first and second upper sliders approach each other, the reserved portion is clamped. At this time, the venting assembly is clamped in the groove, so that the entire soft-pack battery cell is clamped, which facilitates subsequent operations.

[0058] In this embodiment, the groove 4 consists of two semi-circular structures for fitting the hollow cylindrical suction tube in the exhaust assembly.

[0059] In this embodiment, the exhaust assembly includes a straw 13 and a rubber plug 14 detachably connected to one end of the straw 13. The end of the straw 13 away from the rubber plug 14 is inserted into a reserved portion, and the rubber plug 14 is on the outside for easy removal.

[0060] In this embodiment, the lower limit assembly includes a first lower slider 7, a second lower slider 8, a lower slider slide rail 16, and a second adjusting member 12. The second adjusting member 12 is disposed on the mounting block 1 and is used for the second lower slider 8 to slide along the lower slider slide rail 16 toward the first lower slider 7.

[0061] Rotating the second adjusting component moves the second lower slider closer to the first lower slider, clamping the battery body placed between the first and second lower sliders.

[0062] In this embodiment, both the first lower slider 7 and the second lower slider 8 include a lower slider body 9 and a lower slider terminal 10 located at the end of the lower slider body 9. The lower slider terminal 10 passes through the lower slider slide rail 16. One end of the second adjusting member 12 is threadedly connected to the mounting block 1 and connected to the lower slider terminal 10 on the second lower slider 8.

[0063] Specifically, the second adjusting member rotates and presses the second lower slider, causing the second lower slider to slide along the lower slider rail, thereby adjusting the distance between the first lower slider and the second lower slider.

[0064] In this embodiment, the first adjusting member 11 is an upper knob, and the second adjusting member 12 is a lower knob.

[0065] The purpose of this invention is to provide a pouch battery formation fixture that optimizes the process route after the stacking process to "assembly → battery baking → primary electrolyte injection → high-temperature settling → formation → aging → secondary electrolyte injection → sealing → shaping → capacity → K-value → unloading". The advantages of this optimized route are: eliminating the need for a battery gas bag, saving on aluminum-plastic film usage; timely removal of gases generated inside the battery during the formation stage, improving the battery interface; a simplified process route, requiring only one sealing operation; and the ability to perform secondary electrolyte injection for pouch batteries, improving overall battery performance. Figure 1 As can be seen from the comparison diagram, the traditional route requires the retention of a battery gas bag during the formation stage to absorb the gas generated during the formation stage. Its volume is basically the same as that of the battery body, w1=w2, which consumes a large amount of aluminum-plastic film. With the soft-pack battery cell of this utility model and the formation fixture, a small amount of aluminum-plastic film is reserved, w3>w4, which is used for fixing the exhaust device and sealing at the first time during the formation stage.

[0066] Please see Figure 2This utility model provides a soft-pack battery formation fixture, with a mounting block 1. The thickness d1 portion of the mounting block is provided with an upper threaded hole 17 and a lower threaded hole 18, as shown below. Figure 3 As shown, the first adjusting member 11 and the second adjusting member 12 are matched; the first upper slider 2 and the second upper slider 6 have the same structure, including an upper slider body 3, a groove 4, and an upper slider terminal 5. The three-dimensional dimensions of the upper slider terminal 5 are smaller than the three-dimensional dimensions of the upper slider body 3. The first upper slider 2 and the second upper slider 6 are kept at the same level. The first upper slider 2 is fixed in the mounting block 1 and cannot be moved; the first lower slider 7 and the second lower slider 8 have the same structure, including a lower slider body 9 and a lower slider terminal 10. The three-dimensional dimensions of the lower slider terminal 10 are smaller than the three-dimensional dimensions of the lower slider body 9. The first lower slider 7 and the second lower slider 8 are kept at the same level. The first lower slider 7 is fixed in the mounting block 1 and cannot be moved; the first adjusting member 11 has a threaded structure on its main body, and its end can be connected to the second upper slider. The upper slider terminal 5 of the second upper slider 6 contacts the first upper slider 2. Clockwise rotation of the first adjusting member 11 moves the second upper slider 6 towards the first upper slider 2, while counterclockwise rotation moves the second upper slider 6 away from the first upper slider 2. The second adjusting member 12 has a threaded structure in its main body, and its end can contact the lower slider terminal 10 of the second lower slider 8. Clockwise rotation of the second adjusting member 12 moves the second lower slider 8 towards the first lower slider 7, while counterclockwise rotation moves the second lower slider 8 away from the first lower slider 7. The straw 13 has a hollow structure. The rubber stopper 14 matches the hollow size of the straw 13. The upper slider slide 15 and the lower slider slide 16 are vertically arranged on the front of the mounting block 1. h is the vertical height between the first upper slider 2 and the first lower slider 7, or between the second upper slider 6 and the second lower slider 8, and its dimension is less than... Figure 1 w4 in the middle.

[0067] Please see Figure 3 This utility model provides a soft-pack battery formation fixture. The mounting block thickness d1 portion is provided with an upper threaded hole 17 and a lower threaded hole 18. The upper threaded hole 17 has a depth dimension of d1 and matches the first adjusting member 11; the lower threaded hole 18 has a depth dimension of d1 and matches the second adjusting member 12.

[0068] Please see Figure 4 Here is a cross-sectional view of mounting block 1 in the Z direction. d1 is the length of the upper threaded hole 17 and the lower threaded hole 18; d2 is the length of the upper slider slide 15 and the lower slider slide 16; d3 is the width of the upper slider terminal and the lower slider terminal; d4 is the distance from the upper left slider terminal or the lower right slider terminal to the edge; D is the width of mounting block 1; D = d1 + d2 + d3 + d4.

[0069] The working principle of this utility model is as follows: The operator first fixes the assembled and baked battery in a formation fixture. The battery body A is placed in the middle of the lower slider assembly, the battery tab C faces the Y direction, and the reserved part B is located on the upper part of the lower slider assembly, with w3 > w4 > h. The second adjusting member 12 is turned clockwise to move the second lower slider 8 towards the first lower slider 7, thus binding the battery body A. The first adjusting member 11 is turned clockwise to move the second upper slider 6 towards the first upper slider 2. At the same time, the suction tube 13 is introduced into the reserved part B through the groove 4, binding the reserved part B and the suction tube. The tube 13 and rubber stopper 14 are used to seal the straw 13, isolating it from external air and moisture. After being fixed by a clamp, the soft-pack battery is transferred to the liquid injection chamber and injected with liquid through the straw 13. After being left to stand at high temperature, it undergoes formation. At the same time, the gas generated during the formation inside the battery is discharged through the straw 13, so that the battery body A forms a good interface contact state, which is beneficial to long cycle performance. After the formation is completed, it is aged and then injected with liquid a second time through the straw 13, which can improve the overall performance of the battery. Then, it undergoes "sealing → shaping → capacity → K value → unloading" to complete the preparation of the soft-pack battery.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pouch cell, comprising a battery body (A), characterized in that: The battery body (A) has a reserved portion (B) connected to its side. The width w4 of the reserved portion (B) is smaller than the width w3 of the battery body (A). The reserved portion (B) is provided with an exhaust component that can communicate with the outside.

2. The soft-pack battery cell according to claim 1, characterized in that: The exhaust assembly is located on the side of the reserved portion (B) away from the battery body (A). The exhaust assembly includes a straw (13) and a rubber stopper (14). One end of the straw (13) is connected to the middle of the reserved portion (B), and the other end is detachably connected to the rubber stopper (14).

3. A formwork fixture for a pouch cell, wherein the pouch cell comprises a pouch cell as described in claim 1 or 2, characterized in that: The fixture includes a mounting block (1), an upper limit component, and a lower limit component. The upper limit component and the lower limit component are placed on the same side of the mounting block (1) and are arranged vertically. The lower limit component is used to limit the battery body (A), and the upper limit component is used to limit the reserved part (B). The upper limit component is provided with a groove (4), which is used to fix the exhaust component.

4. The soft-pack battery cell formation fixture according to claim 3, characterized in that: A gap is provided between the upper limit component and the lower limit component, the height of the gap is h, and w4 is greater than h.

5. A soft-pack battery cell formation fixture according to claim 3, characterized in that: The upper limit assembly includes a first upper slider (2), a second upper slider (6), an upper slider slide rail (15), and a first adjusting member (11). The first adjusting member (11) is disposed on the mounting block (1) and is used for the second upper slider (6) to slide along the upper slider slide rail (15) toward the first upper slider (2).

6. The soft-pack battery cell formation fixture according to claim 5, characterized in that: The first upper slider (2) and the second upper slider (6) both include an upper slider body (3) and an upper slider terminal (5) located at the end of the upper slider body (3). The upper slider terminal (5) passes through the upper slider slide (15). One end of the first adjusting member (11) is threadedly connected to the mounting block (1) and connected to the upper slider terminal (5) on the second upper slider (6).

7. A soft-pack battery cell formation fixture according to claim 5, characterized in that: The groove (4) is placed on the side opposite to the first upper slider (2) and the second upper slider (6).

8. A soft-pack battery cell formation fixture according to claim 3, characterized in that: The lower limit assembly includes a first lower slider (7), a second lower slider (8), a lower slider slide rail (16), and a second adjusting member (12). The second adjusting member (12) is disposed on the mounting block (1) and is used for the second lower slider (8) to slide along the lower slider slide rail (16) toward the first lower slider (7).

9. A soft-pack battery cell formation fixture according to claim 8, characterized in that: Both the first lower slider (7) and the second lower slider (8) include a lower slider body (9) and a lower slider terminal (10) located at the end of the lower slider body (9). The lower slider terminal (10) passes through the lower slider slide (16). One end of the second adjusting member (12) is threadedly connected to the mounting block (1) and connected to the lower slider terminal (10) on the second lower slider (8).

Images