A cell compacting device

Abstract

The utility model relates to the technical field of battery cell manufacturing discloses a battery cell pressing device, has perpendicular first direction and second direction, include: slide rail subassembly, sliding support, two first pressure mechanism and second pressure mechanism, sliding support is connected in the slide rail subassembly along the first direction sliding, second pressure mechanism and two first pressure mechanism install in the sliding support along the first direction, and second pressure mechanism is located between two first pressure mechanism, one first pressure mechanism is used for along second direction pressure tight battery cell makes it adhere to left end plate, another first pressure mechanism is used for along second direction pressure tight battery cell makes it adhere to right end plate, second pressure mechanism is used for along second direction pressure tight middle end plate makes it adhere to battery cell, the utility model discloses a battery cell pressing device through multiple pressure mechanism independent pressure tight battery cell and middle end plate, to this to be compatible with each type battery module's pressure tight operation.

Description

Technical Field

[0001] This utility model relates to the field of battery cell manufacturing technology, and in particular to a battery cell pressing device. Background Technology

[0002] In the cell stacking process of the cell stacking section and the pairing assembly of the middle end plate and the cell in the group stacking process, the middle end plate, left end plate and right end plate need to be stacked with the corresponding cell to form a module, then the module is paired, and finally the module is stacked. The above processing is relatively complicated and there are significant limitations in compatibility when pairing. Utility Model Content

[0003] The primary objective of this invention is to provide a cell pressing device that is compatible with pressing operations for various types of battery modules.

[0004] To achieve the above objectives, this utility model provides a battery cell clamping device having a vertical first direction x and a second direction z, including: a slide rail assembly, a sliding bracket, two first clamping mechanisms and a second clamping mechanism;

[0005] The sliding bracket is slidably connected to the slide rail assembly along the first direction x, and the second pressing mechanism and two first pressing mechanisms are installed on the sliding bracket along the first direction x, with the second pressing mechanism located between the two first pressing mechanisms;

[0006] One of the first pressing mechanisms is used to press the battery cell along the second direction z to make it adhere to the left end plate, another first pressing mechanism is used to press the battery cell along the second direction z to make it adhere to the right end plate, and the second pressing mechanism is used to press the middle end plate along the second direction z to make it adhere to the battery cell.

[0007] In some embodiments, the first clamping mechanism includes: a first driving member and a first clamping assembly;

[0008] In some embodiments, the sliding bracket has a first mounting surface and a second mounting surface disposed opposite to each other, the first driving member is fixedly connected to the first mounting surface, the first driving member is connected to the first pressing assembly, and the first driving member is used to drive the first pressing assembly to press the battery cell along the second direction z.

[0009] In some embodiments, the first clamping mechanism further includes a first guide assembly fixedly connected to the second mounting surface, the first guide assembly including: a first linear bearing and a first guide rod;

[0010] The first linear bearing is mounted on the first clamping assembly, the first guide rod is slidably connected to the first linear bearing along the second direction z, and one end of the first guide rod extends out of the first linear bearing and is fixedly connected to the sliding bracket.

[0011] The first clamping assembly includes a first bearing housing, a first spring, a first connecting rod, and a roller assembly;

[0012] The first bearing housing has a first mounting hole and a first blind hole extending along the second direction z. The first linear bearing is mounted in the first mounting hole. One end of the first connecting rod is mounted in the first blind hole via the first spring. The other end of the first connecting rod is connected to the roller assembly. The first drive member is connected to the first bearing housing.

[0013] In some embodiments, the roller assembly includes a roller seat, a rubber-coated roller, a pin, and two bearings. The roller seat is connected to the other end of the first connecting rod. The roller seat has a roller groove. The rubber-coated roller is disposed in the roller groove. The pin is mounted on the roller seat. The rubber-coated roller is mounted on the pin via the two bearings.

[0014] In some embodiments, the second clamping mechanism includes: a second drive member and a second clamping assembly;

[0015] The second driving component is fixedly connected to the first mounting surface. The second driving component is connected to the second pressing assembly. The second driving component is used to drive the second pressing assembly to press the middle plate along the second direction z.

[0016] In some embodiments, the second clamping assembly further includes a second guide assembly fixedly connected to the second mounting surface, the second guide assembly including: a second linear bearing and a second guide rod;

[0017] The second linear bearing is mounted on the second clamping assembly, the second guide rod is slidably connected to the second linear bearing along the second direction z, and one end of the second guide rod extends out of the second linear bearing and is fixedly connected to the sliding bracket.

[0018] In some embodiments, the second clamping assembly includes a second bearing housing, a second spring, a second connecting rod, and a pressure head;

[0019] The second bearing housing has a second mounting hole and a second blind hole extending along the second direction z. The second linear bearing is mounted in the second mounting hole. One end of the second connecting rod is mounted in the second blind hole via the second spring. The other end of the second connecting rod is connected to the pressure head. The second driving member is connected to the second bearing housing.

[0020] In some embodiments, both the first driving member and the second driving member are cylinders.

[0021] In some embodiments, the slide rail assembly includes a slide rail, a slider, and two columns. The sliding bracket is slidably connected to the slide rail along the first direction x via the slider. The two columns are spaced apart along the first direction x, and the slide rail is connected to the two columns.

[0022] The present invention provides a battery cell clamping device, which has the following advantages compared with the prior art:

[0023] The sliding bracket is slidably connected to the slide rail assembly along the first direction. The first pressing mechanism and the second pressing mechanism are installed on the sliding bracket along the first direction, and the second pressing mechanism is located between the two first pressing mechanisms, so that the first pressing mechanism and the second pressing mechanism can slide on the slide rail assembly for position adjustment. One first pressing mechanism is used to press the battery cell along the second direction to fit it against the left end plate, and another first pressing mechanism is used to press the battery cell along the second direction to fit it against the right end plate. The second pressing mechanism is used to press the middle end plate along the second direction to fit it against the battery cell. The first pressing mechanism can press the battery cell against the left end plate and the right end plate, and the second pressing mechanism can press the middle end plate to fit it against the battery cell, so as to achieve independent pressing of the battery cells on the left and right sides of the battery module and the middle end plate, thereby being compatible with the pressing operation of various types of battery modules and improving the accuracy of battery cell assembly. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the axial structure of the battery cell pressing device according to an embodiment of this utility model.

[0025] Figure 2 This is an enlarged axial side structural diagram of the second pressing mechanism and two first pressing mechanisms of the battery cell pressing device according to an embodiment of this utility model.

[0026] Figure 3 This is an enlarged front view schematic diagram of the second pressing mechanism and two first pressing mechanisms of the battery cell pressing device according to an embodiment of this utility model.

[0027] Figure 4 yes Figure 3 Enlarged cross-sectional view of the structure along the AA direction.

[0028] Figure 5 yes Figure 3 Enlarged cross-sectional view of the structure along the BB direction.

[0029] In the diagram: 1. Slide rail assembly; 11. Slide rail; 12. Slider; 13. Column; 2. Sliding bracket; 21. First mounting surface; 22. Second mounting surface; 3. First clamping mechanism; 31. First driving component; 32. First guide assembly; 321. First linear bearing; 322. First guide rod; 33. First clamping assembly; 331. First bearing seat; 3311. First mounting hole; 3312. First blind hole; 332. First spring; 333. First connecting rod; 334. Roller Components; 3341, Roller seat; 3342, Rubber-coated roller; 3343, Pin; 3344, Bearing; 4, Second clamping mechanism; 41, Second drive component; 42, Second guide assembly; 421, Second linear bearing; 422, Second guide rod; 43, Second clamping assembly; 431, Second bearing seat; 4311, Second mounting hole; 4312, Second blind hole; 432, Second spring; 433, Second connecting rod; 434, Pressure head; x, First direction; z, Second direction. Detailed Implementation

[0030] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0031] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the embodiments of the application, "parallel" refers to a state in which the angle formed by two lines, a line and a surface, or a surface is -1° to 1°. "Perpendicular" refers to a state in which the angle formed by two lines, a line and a surface, or a surface is 89° to 91°. Equal distances, equal angles, or equal areas refer to a state in which the tolerance range is -1% to 1%.

[0035] like Figures 1-5 As shown, the battery cell clamping device of some embodiments of the present invention has a vertical first direction x and a second direction z, including: a slide rail assembly 1, a sliding bracket 2, two first clamping mechanisms 3 and a second clamping mechanism 4; the sliding bracket 2 is slidably connected to the slide rail assembly 1 along the first direction x, the two first clamping mechanisms 3 and the second clamping mechanism 4 are installed on the sliding bracket 2 along the first direction x, and the second clamping mechanism 4 is located between the two first clamping mechanisms 3.

[0036] In this embodiment, a first pressing mechanism 3 is used to press the battery cell along the second direction z so that it is attached to the left end plate, another first pressing mechanism 3 is used to press the battery cell along the second direction z so that it is attached to the right end plate, and a second pressing mechanism 4 is used to press the middle end plate along the second direction z so that it is attached to the battery cell.

[0037] In the module formed by stacking multiple battery cells, the left end plate is located at the left end of the module, the middle end plate is located in the middle of the module, and the right end plate is located at the right end of the module. During the pressing operation, adhesive is applied to the right side of the left end plate to fix it to the leftmost battery cell, adhesive is applied to both sides of the middle end plate to fix it to the two middle battery cells, and adhesive is applied to the left side of the right end plate to fix it to the rightmost battery cell.

[0038] During operation, the first pressing mechanism 3 and the second pressing mechanism 4 slide along the first direction x on the slide rail assembly 1 via the sliding bracket 2, thereby adjusting the position of the first pressing mechanism 3 and the second pressing mechanism 4, and performing the pressing operation to make the battery cell fit with the left end plate, the middle end plate and the right end plate.

[0039] Based on the above structural configuration, the sliding bracket 2 is slidably connected to the slide rail assembly 1 along the first direction x. The second pressing mechanism 4 and two first pressing mechanisms 3 are installed on the sliding bracket 2 along the first direction x, and the second pressing mechanism 4 is located between the two first pressing mechanisms 3, so that the second pressing mechanism 4 and the two first pressing mechanisms 3 can slide on the slide rail assembly 1 for position adjustment. One first pressing mechanism 3 is used to press the battery cell along the second direction z to make it fit against the left end plate, and another first pressing mechanism 3 is used to press the battery cell along the second direction z to make it fit against the right end plate. The second pressing mechanism 4 is used to press the middle end plate along the second direction z to make it fit against the battery cell, thereby realizing the pressing operation of the battery cells on the left and right sides of the battery module and the middle end plate, so as to be compatible with the pressing operation of various types of battery modules and improve the accuracy of battery cell assembly.

[0040] like Figure 3 and Figure 4 As shown, in some embodiments, the first pressing mechanism 3 includes: a first driving member 31, a first guiding component 32, and a first pressing component 33; the sliding bracket 2 has a first mounting surface 21 and a second mounting surface 22 disposed opposite to each other, the first driving member 31 is fixedly connected to the first mounting surface 21, the first guiding component 32 is fixedly connected to the second mounting surface 22, the first driving member 31 is connected to the first pressing component 33, the first pressing component 33 is slidably connected to the first guiding component 32 along the second direction z, and the first driving member 31 is used to drive the first pressing component 33 to press the battery cell along the second direction z. Thus, activating the first driving component 31 can drive the first pressing component 33 to slide along the second direction z, while the first guiding component 32 makes the sliding process of the first pressing component 33 smooth and avoids the first pressing component 33 from rotating. When the first pressing mechanism 3 slides to the working position on the sliding component 1 along the first direction x through the sliding bracket 2, the module moves to the contact position of the left end plate, and the first pressing component 33 is activated to press down on the battery cell, so that the battery cell is in contact with the left end plate. Similarly, the first pressing mechanism 3 moves to the contact position of the right end plate, and the first pressing component 33 is activated to press down on the battery cell, so that the battery cell is in contact with the right end plate.

[0041] like Figure 4 As shown, in some embodiments, the first guide assembly 32 includes a first linear bearing 321 and a first guide rod 322. The first linear bearing 321 is mounted on the first clamping assembly 33, and the first guide rod 322 is slidably connected to the first linear bearing 321 along a second direction z. One end of the first guide rod 322 extends out of the first linear bearing 321 and is fixedly connected to the sliding bracket 2. Thus, the first guide rod 322 slides within the first linear bearing 321 along the second direction z. Since one end of the first guide rod 322 is fixedly connected to the sliding bracket 2, and the first linear bearing 321 is mounted on the first clamping assembly 33, the first driving member 31 can drive the first clamping assembly 33 to slide only along the second direction z. During the clamping operation, the first driving member 31 drives the first clamping assembly 33 to move downwards, causing the first linear bearing 321 to slide along the outer wall of the first guide rod 322, achieving a guiding effect.

[0042] like Figure 4 As shown, in some embodiments, the first clamping assembly 33 includes a first bearing seat 331, a first spring 332, a first connecting rod 333, and a roller assembly 334. The first bearing seat 331 has a first mounting hole 3311 and a first blind hole 3312 extending along a second direction z. A first linear bearing 321 is mounted in the first mounting hole 3311. One end of the first connecting rod 333 is mounted in the first blind hole 3312 via the first spring 332, and the other end of the first connecting rod 333 is connected to the roller assembly 334. A first driving member 31 is connected to the first bearing seat 331. Thus, the first driving member 31 drives the first bearing seat 331 to slide along the second direction z. At this time, the first bearing seat 331 drives the roller assembly 334 to move via the first connecting rod 333, thereby clamping the battery cell and making the battery cell fit against the left and right end plates. The first spring 332 acts as a buffer to prevent the roller assembly 334 from exerting excessive clamping force on the battery cell, which could damage the battery cell. During the clamping operation, the first driving member 31 drives the first clamping assembly 33 to move downward, the roller assembly 334 abuts against the battery cell and applies pressure to the battery cell, and the first spring 332 is compressed through the transmission of the pressure through the first connecting rod 333.

[0043] like Figure 4As shown, in some embodiments, the roller assembly 334 includes a roller seat 3341, a rubber-coated roller 3342, a pin 3343, and two bearings 3344. The roller seat 3341 is connected to the other end of the first connecting rod 333. The roller seat 3341 has a roller groove, the rubber-coated roller 3342 is disposed in the roller groove, the pin 3343 is mounted on the roller seat 3341, and the rubber-coated roller 3342 is mounted on the pin 3343 via the two bearings 3344. Thus, when the rubber-coated roller 3342 abuts against the battery cell for pressing, the slide rail assembly 1 drives the rubber-coated roller 3342 to move along the first direction x. At this time, the pin 3343 rotates within the two bearings 3344, making the rubber-coated roller 3342 rotate smoothly, thereby increasing the range of the pressing operation. It should be noted that the rubber-coated roller 3342 is made of insulating materials such as rubber or plastic to prevent short circuits in the battery cell during the pressing operation.

[0044] like Figure 3 and 5 As shown, in some embodiments, the second pressing mechanism 4 includes: a second driving member 41, a second guiding component 42, and a second pressing component 43; the second driving member 41 is fixedly connected to the first mounting surface 21, the second guiding component 42 is fixedly connected to the second mounting surface 22, the second driving member 41 is connected to the second pressing component 43, and the second pressing component 43 is slidably connected to the second guiding component 42 along the second direction z. The second driving member 41 is used to drive the second pressing component 43 to press the middle plate along the second direction. Thus, opening the second driving member 41 can drive the second pressing component 43 to slide along the second direction z, while the second guiding component 42 makes the sliding process of the second pressing component 43 smooth and avoids the second pressing component 43 from rotating. When the second pressing mechanism 4 slides to the working position along the first direction x on the sliding component 1 through the sliding bracket 2, the module moves to the contact position of the middle plate, and the second pressing component 43 is opened to press the battery cell down, so that the battery cell is in contact with the middle plate.

[0045] like Figure 5As shown, in some embodiments, the second guide assembly 42 includes: a second linear bearing 421 and a second guide rod 422; the second linear bearing 421 is mounted on the second clamping assembly 43, and the second guide rod 422 is slidably connected to the second linear bearing 421 along a second direction z. One end of the second guide rod 422 extends out of the second linear bearing 421 and is fixedly connected to the sliding bracket 2. Thus, the second guide rod 422 slides within the second linear bearing 421 along the second direction z. Since one end of the second guide rod 422 is fixedly connected to the sliding bracket 2, and the second linear bearing 421 is mounted on the second clamping assembly 43, the second driving member 41 can drive the second clamping assembly 43 to slide only along the second direction z. During the clamping operation, the second driving member 41 drives the second clamping assembly 43 downward, causing the second linear bearing 421 to slide along the outer wall of the second guide rod 422, achieving a guiding effect.

[0046] like Figure 5 As shown, in some embodiments, the second clamping assembly 43 includes a second bearing seat 431, a second spring 432, a second connecting rod 433, and a pressure head 434. The second bearing seat 431 has a second mounting hole 4311 and a second blind hole 4312 extending along a second direction z. A second linear bearing 421 is mounted in the second mounting hole 4311. One end of the second connecting rod 433 is mounted in the second blind hole 4312 via the second spring 432, and the other end of the second connecting rod 433 is connected to the pressure head 434. A second driving member 41 is connected to the second bearing seat 431. Thus, the second driving member 41 drives the second bearing seat 431 to slide along the second direction z. At this time, the second bearing seat 431 drives the pressure head 434 to move via the second connecting rod 433, thereby clamping the middle plate and making the battery cell fit against the middle plate. The second spring 432 acts as a buffer to prevent the pressure head 434 from exerting excessive clamping force on the battery cell, which could damage the battery cell. It should be noted that the pressure head is made of insulating materials such as rubber or plastic to prevent short circuits in the battery cell during the clamping process. During the clamping operation, the second drive component 41 drives the second clamping assembly 43 to move downward, the pressure head 434 abuts against the battery cell and applies pressure to the battery cell, which is transmitted through the first connecting rod 333 to keep the second spring 432 in a compressed state.

[0047] In some embodiments, both the first drive member 31 and the second drive member 41 are cylinders. This allows for precise control of the stroke during the pressing operation.

[0048] like Figure 1As shown, in some embodiments, the slide rail assembly 1 includes a slide rail 11, a slider 12, and two columns 13 spaced apart along a first direction x. A sliding bracket 2 is slidably connected to the slide rail 11 via the slider 12 along the first direction x. The slide rail 11 is connected to the two columns 13. The columns 13 support the slide rail 11, providing space for the second clamping mechanism 4 and the two first clamping mechanisms 3 to perform clamping operations. Furthermore, the slide rail 11 is an electric slide rail, enabling automatic adjustment of the positions of the second clamping mechanism 4 and the two first clamping mechanisms 3 along the first direction x. During operation, the slider 12 slides along the slide rail 11 along the first direction x.

[0049] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery cell clamping device, having a vertical first direction (x) and a second direction (z), characterized in that, include: The slide rail assembly (1), the sliding bracket (2), two first clamping mechanisms (3) and a second clamping mechanism (4); The sliding bracket (2) is slidably connected to the slide rail assembly (1) along the first direction (x), the second pressing mechanism (4) and two first pressing mechanisms (3) are installed on the sliding bracket (2) along the first direction (x), and the second pressing mechanism (4) is located between the two first pressing mechanisms (3); One of the first pressing mechanisms (3) is used to press the battery cell along the second direction (z) to make it fit against the left end plate, and another first pressing mechanism (3) is used to press the battery cell along the second direction (z) to make it fit against the right end plate, and the second pressing mechanism (4) is used to press the middle end plate along the second direction (z) to make it fit against the battery cell.

2. The cell clamping device according to claim 1, characterized in that, The first clamping mechanism (3) includes: a first driving member (31) and a first clamping assembly (33); The sliding bracket (2) has a first mounting surface (21) and a second mounting surface (22) arranged opposite to each other. The first driving member (31) is fixedly connected to the first mounting surface (21). The first driving member (31) is connected to the first pressing assembly (33). The first driving member (31) is used to drive the first pressing assembly (33) to press the battery cell along the second direction (z).

3. The cell clamping device according to claim 2, characterized in that, The first clamping mechanism (3) further includes a first guide assembly (32) fixedly connected to the second mounting surface (22), the first guide assembly (32) including: a first linear bearing (321) and a first guide rod (322); The first linear bearing (321) is mounted on the first clamping assembly (33), and the first guide rod (322) is slidably connected to the first linear bearing (321) along the second direction (z). One end of the first guide rod (322) extends out of the first linear bearing (321) and is fixedly connected to the sliding bracket (2).

4. The cell clamping device according to claim 3, characterized in that, The first clamping assembly (33) includes a first bearing seat (331), a first spring (332), a first connecting rod (333), and a roller assembly (334); The first bearing housing (331) has a first mounting hole (3311) and a first blind hole (3312) extending along the second direction (z). The first linear bearing (321) is mounted in the first mounting hole (3311). One end of the first connecting rod (333) is mounted in the first blind hole (3312) via the first spring (332). The other end of the first connecting rod (333) is connected to the roller assembly (334). The first drive member (31) is connected to the first bearing housing (331).

5. The cell clamping device according to claim 4, characterized in that, The roller assembly (334) includes a roller seat (3341), a rubber-coated roller (3342), a pin (3343), and two bearings (3344). The roller seat (3341) is connected to the other end of the first connecting rod (333). The roller seat (3341) has a roller groove. The rubber-coated roller (3342) is disposed in the roller groove. The pin (3343) is mounted on the roller seat (3341). The rubber-coated roller (3342) is mounted on the pin (3343) through the two bearings (3344).

6. The cell clamping device according to claim 2, characterized in that, The second clamping mechanism (4) includes: a second drive member (41) and a second clamping assembly (43); The second driving member (41) is fixedly connected to the first mounting surface (21). The second driving member (41) is connected to the second pressing assembly (43). The second driving member (41) is used to drive the second pressing assembly (43) to press the middle end plate along the second direction (z).

7. The cell clamping device according to claim 6, characterized in that, The second clamping assembly (43) further includes a second guide assembly (42) fixedly connected to the second mounting surface (22), the second guide assembly (42) including: a second linear bearing (421) and a second guide rod (422); The second linear bearing (421) is mounted on the second clamping assembly (43), the second guide rod (422) is slidably connected to the second linear bearing (421) along the second direction (z), and one end of the second guide rod (422) extends out of the second linear bearing (421) and is fixedly connected to the sliding bracket (2).

8. The cell clamping device according to claim 7, characterized in that, The second clamping assembly (43) includes a second bearing seat (431), a second spring (432), a second connecting rod (433), and a pressure head (434); The second bearing housing (431) has a second mounting hole (4311) and a second blind hole (4312) extending along the second direction (z). The second linear bearing (421) is mounted in the second mounting hole (4311). One end of the second connecting rod (433) is mounted in the second blind hole (4312) via the second spring (432). The other end of the second connecting rod (433) is connected to the pressure head (434). The second drive member (41) is connected to the second bearing housing (431).

9. The cell clamping device according to claim 6, characterized in that, Both the first drive unit (31) and the second drive unit (41) are cylinders.

10. The cell clamping device according to claim 1, characterized in that, The slide rail assembly (1) includes a slide rail (11), a slider (12) and two columns (13). The sliding bracket (2) is slidably connected to the slide rail (11) along the first direction (x) via the slider (12). The two columns (13) are spaced apart along the first direction (x). The slide rail (11) is connected to the two columns (13).

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