Battery cell testing device and method

Abstract

The present invention discloses a battery cell testing device and method, wherein the battery cell testing device includes an impact machine main body and guide rails relatively installed on the impact machine main body, a cross bar is installed between the guide rails, and also includes: a steering mechanism, the steering mechanism is installed on the impact machine main body; a synchronous translation mechanism, the synchronous translation mechanism is installed on the impact machine main body, the synchronous translation mechanism steering mechanism approaches or moves toward the battery cell; a clamping plate, the clamping plate clamps the battery cell; different from the existing technology, during actual use of this testing mechanism, the operator can directly control the battery cell to obtain a rotating surface through a turntable in front of the box door, and the five surfaces can be impact tested in a single fixation, and each rotation has a corresponding limit to rotate the mechanism to a precise position, which is more efficient and safer.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell testing, and in particular to a battery cell testing device. Background Art

[0002] Before the battery cells are finalized and put into production, the battery cells, modules, and pack boxes need to undergo impact testing. If the impact test fails to meet the design requirements before production is put into production, it will affect the safety of the product. In severe cases, it will cause the battery cells to short-circuit or explode, which may cause serious harm to the human body. At present, most companies are equipped with uniaxial impact test benches. In order to meet the requirements of the six-way impact test, it is necessary to design corresponding modules to fix the battery cells so that the uniaxial impact test bench can meet the requirements of the six-way impact test. When the battery cells need to be reversed, the box door needs to be opened and the mold that fixes the battery cells needs to be replaced to clamp and fix the other side of the battery cells. When testing the six sides of the battery cells, one side often needs to be tested three times, a total of six sides, a total of eighteen times. After each impact, it is necessary to observe outside the box for a certain period of time to prevent the battery cells from exploding due to chemical reactions caused by the impact. In this process, each time the side is changed, the box door needs to be opened and closed, the mold and the direction of the battery cells need to be replaced. After each impact, it is necessary to wait for a certain period of time. The process of changing the side of the battery cells is also accompanied by the risk of battery cell explosion. The operation is cumbersome, the efficiency is low, and there are certain safety hazards. For this reason, we propose an automatic flipping battery cell testing device. Summary of the Invention

[0003] The object of the present invention is to provide a battery cell testing device and method to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a battery cell testing device, comprising an impact machine body and guide rails mounted relative to the impact machine body, with a crossbar mounted between the guide rails, and further comprising:

[0005] A steering mechanism, the steering mechanism being mounted on the impact machine body;

[0006] A synchronous translation mechanism is installed on the impact machine body, and the synchronous translation mechanism steering mechanism approaches or moves toward the battery cell;

[0007] A clamping plate, which clamps the battery cell;

[0008] The conversion mechanism is installed on the clamping plate and connected to the steering mechanism. The steering mechanism steers the clamping plate holding the battery cell. The conversion mechanism ensures that the steering mechanism is always connected to the clamping plate.

[0009] Preferably, the steering mechanism includes a shaft 1 installed through the impact machine body, a polygonal column 1 is installed on the top of the shaft 1, a support rod 1 is installed on the impact machine body, a collar 1 is installed on the support rod 1, and the shaft 1 passes through the collar 1; it also includes a support rod 2 and a support rod 3 installed on the impact machine body, a collar 2 is installed on each of the support rods 2 and 3, a shaft 2 is installed through the collar 2, and a polygonal column 2 is installed on the top of the shaft 2;

[0010] A limiting mechanism is installed on the steering mechanism, and the limiting mechanism limits the angle of each rotation of the clamping plate.

[0011] Preferably, the limiting mechanism includes a turntable mounted on axis one, with a slot provided on the edge of the turntable, four slots being arranged in a ring equidistant from each other, and a limit column mounted on the impact machine body, the limit column and the slot being engaged with each other.

[0012] Preferably, the synchronous translation mechanism includes a groove one provided on the first shaft, a sleeve is installed in the first groove, a support rod four is installed on the impact machine body, a guide tube is installed on the support rod four, a support rod five is installed on the impact machine body, there are two support rods five, and a guide wheel is installed on each of the support rods five, a shaft three is installed on the impact machine body, a steel wire rope is installed on the sleeve, the steel wire rope passes through the guide tube, then surrounds the guide wheel, and the other end is wound onto the third shaft, a gear one is installed on the third shaft, a shaft four is installed on the impact machine body, a gear two is installed on the fourth shaft, the gear two and the gear one are meshed with each other, a rotating block is installed on the fourth shaft, a plurality of tooth grooves are provided on the second shaft, the rotating block and the tooth grooves are meshed with each other, and a reset member is installed on the fourth shaft.

[0013] Preferably, the reset member includes a torsion spring disk mounted on shaft four, the torsion spring disk is penetrated by shaft four, a bracket is mounted on the outer periphery of the torsion spring disk, and the bracket is fixedly connected to the impact machine body.

[0014] Preferably, the conversion mechanism includes a fixing seat mounted on the clamping plate, a pipe is mounted on the fixing seat, there are five pipes, four of which are mounted in a circular array around the fixing seat, and another is mounted at the bottom of the fixing seat, polygonal grooves are provided in the pipes, and the polygonal grooves can be engaged with polygonal column one and polygonal column two, trigger blocks are relatively installed in the pipes, and also include groove two opened on the fixing seat, there are four grooves two, which are respectively located between the pipes, axis five is installed in the groove two, a rotating plate is mounted on the axis five, a clamping rod is installed on the rotating plate, groove three is provided on the pipes, the clamping rod passes through groove three, arc rods are installed on the rotating plate, circular holes are provided on the pipes and polygonal column one and polygonal column two, and the arc rods can engage with the circular holes.

[0015] Preferably, the steering mechanism, the limiting mechanism, and the synchronous translation mechanism each have two groups with the same structure, and each group is arranged perpendicular to each other.

[0016] Preferably, a roller is installed through the cross bar, and the roller is engaged with the guide rail.

[0017] Preferably, the clamping plate is in an "X" shape, and after clamping the battery cell, the top of the battery cell is also clamped and fixed.

[0018] The present invention has at least the following beneficial effects: under the operation of the steering mechanism and the synchronous translation mechanism, the five surfaces of the battery cells on the clamping plate can be impact tested without opening the box door, which greatly improves the efficiency of the test process.

[0019] The "X"-shaped design of the clamping plate ensures that when the punching shaft impacts the battery cell, it will not directly impact the clamping plate, thereby extending the service life of the mechanism.

[0020] During the process of replacing the battery cells, there is no need to open the box door, which effectively avoids injuries to operators caused by explosions caused by impacts of inferior battery cells.

[0021] The conversion mechanism can ensure that the conversion mechanism connected to the clamping plate is always supported by the synchronous translation mechanism, thereby preventing errors in the test results caused by the drop of the clamping plate.

[0022] Different from the existing technology, in actual use, the operator can directly control the rotation of the battery cell through the turntable in front of the box door, and each rotation has a corresponding limit to make the mechanism rotate to a precise position, which is more efficient and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2For the present invention Figure 1 Structural diagram at A;

[0025] Figure 3 Schematic diagram of the internal structure of the present invention;

[0026] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at B;

[0027] Figure 5 For the present invention Figure 3 Schematic diagram of the structure at C;

[0028] Figure 6 For the present invention Figure 3 Schematic diagram of the structure at D;

[0029] Figure 7 This is a schematic diagram of the conversion mechanism structure of the present invention;

[0030] Figure 8 It is a schematic diagram of the exploded structure of the conversion mechanism of the present invention.

[0031] In the figure: 1- impact machine body; 11- guide rail; 12- crossbar; 13- roller; 2- steering mechanism; 21- axis 1; 22- polygonal column 1; 23- support rod 1; 24- collar 1; 25- support rod 2; 26- support rod 3; 27- collar 2; 28- axis 2; 29- polygonal column 2; 3- synchronous translation mechanism; 31- groove 1; 32- sleeve; 33- support rod 4; 34- guide tube; 35- support rod 5; 36- guide wheel; 37- axis 3; 38- wire rope; 39 -Gear 1; 310-Axis 4; 311-Gear 2; 312-Rotating block; 313-Tooth groove; 300-Reset member; 301-Torsion spring disk; 302-Bracket; 4-Clamping plate; 5-Conversion mechanism; 51-Fixed seat; 52-Pipeline; 53-Polygonal groove; 54-Trigger block; 55-Groove 2; 56-Axis 5; 57-Rotating plate; 58-Clamping rod; 59-Groove 3; 510-Arc rod; 511-Circular hole; 6-Limiting mechanism; 61-Turntable; 62-Clamping groove; 63-Limiting column. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] Example 1

[0034] See also Figure 1-8The present invention provides a technical solution: a battery cell testing device, comprising an impact machine body 1 and guide rails 11 relatively mounted on the impact machine body 1, with a crossbar 12 mounted between the guide rails 11, and further comprising:

[0035] A steering mechanism 2 is mounted on the impact machine body 1;

[0036] Synchronous translation mechanism 3, the synchronous translation mechanism 3 is installed on the impact machine body 1, and the synchronous translation mechanism 3 turns the mechanism 2 to approach or move toward the battery cell;

[0037] Clamping plate 4, clamping plate 4 clamps the battery cell;

[0038] The conversion mechanism 5 is installed on the clamping plate 4 and connected to the steering mechanism 2. The steering mechanism 2 steers the clamping plate 4 holding the battery cell. The conversion mechanism 5 ensures that the steering mechanism 2 is always connected to the clamping plate 4.

[0039] The synchronous translation mechanism 3 is inserted into the conversion mechanism 5 , and the conversion mechanism 5 is fixedly connected to the clamping plate 4 . The clamping plate 4 clamps the battery cell, that is, the synchronous translation mechanism 3 indirectly supports the battery cell.

[0040] The steering mechanism 2 includes a shaft 21 that is installed through the impact machine body 1, with a polygonal column 22 installed on the top of the shaft 21. A support rod 23 is installed on the impact machine body 1, and a collar 24 is installed on the support rod 23. The shaft 21 passes through the collar 24. It also includes a second support rod 25 and a third support rod 26 installed on the impact machine body 1. The second support rod 25 and the third support rod 26 are each installed with a collar 27. A shaft 28 is installed through the collar 27, and a polygonal column 29 is installed on the top of the shaft 28.

[0041] Furthermore, a limiting mechanism 6 is installed on the steering mechanism 2 , and the limiting mechanism 6 limits the angle of each rotation of the clamping plate 4 .

[0042] The limiting mechanism 6 includes a turntable 61 mounted on the shaft 21, and a card slot 62 is provided on the edge of the turntable 61. There are four card slots 62, which are arranged in a ring shape with equal distances from each other. It also includes a limit column 63 mounted on the impact machine body 1, and the limit column 63 is engaged with the card slot 62.

[0043] The synchronous translation mechanism 3 includes a groove 31 opened on the shaft 21, a sleeve 32 is installed in the groove 31, a support rod 4 33 is installed on the impact machine body 1, a guide tube 34 is installed on the support rod 4 33, a support rod 5 35 is installed on the impact machine body 1, there are two support rods 5 35, and each support rod 5 35 is installed with a guide wheel 36, a shaft 37 is installed on the impact machine body 1, a wire rope 38 is installed on the sleeve 32, and the wire rope 38 passes through the guide tube 34. The guide tube 34 then wraps around the guide wheel 36, and the other end is wrapped around the shaft three 37. The shaft three 37 is equipped with a gear one 39. The impact machine body 1 is equipped with a shaft four 310. The shaft four 310 is equipped with a gear two 311. The gear two 311 and the gear one 39 are engaged with each other. The shaft four 310 is equipped with a rotating block 312. The shaft two 28 is provided with a plurality of tooth grooves 313. The rotating block 312 and the tooth grooves 313 are engaged with each other. The shaft four 310 is equipped with a reset member 300.

[0044] The reset member 300 includes a torsion spring disk 301 installed on the fourth shaft 310. The torsion spring disk 301 is penetrated by the fourth shaft 310. A bracket 302 is installed on the outer periphery of the torsion spring disk 301. The bracket 302 is fixedly connected to the impact machine body 1.

[0045] The conversion mechanism 5 includes a fixed seat 51 mounted on the clamping plate 4, and a pipe 52 is installed on the fixed seat 51. There are five pipes 52, four of which are installed in a circular array around the fixed seat 51, and the other is installed at the bottom of the fixed seat 51. Polygonal grooves 53 are provided in the pipes 52, and the polygonal grooves 53 can be engaged with the polygonal column 1 22 and the polygonal column 2 29. A trigger block 54 is installed oppositely in the pipe 52, and it also includes a groove 2 55 opened on the fixed seat 51. There are four grooves 2 55, which are respectively located between the pipes 52, and an axis 56 is installed in the groove 2 55. A rotating plate 57 is installed on the axis 56, and a clamping rod 58 is installed on the rotating plate 57. A groove 3 59 is provided on the pipe 52, and the clamping rod 58 passes through the groove 3 59. An arc rod 510 is installed on the rotating plate 57. Circular holes 511 are provided on the pipe 52, the polygonal column 1 22 and the polygonal column 29, and the arc rod 510 can be engaged with the circular holes 511.

[0046] There are two groups of steering mechanisms 2, limiting mechanisms 6 and synchronous translation mechanisms 3, and they have the same structure. Each group is arranged perpendicular to each other.

[0047] Example 2

[0048] This application further optimizes this solution based on Example 1:

[0049] A roller 13 is installed through the cross bar 12 , and the roller 13 and the guide rail 11 are engaged with each other.

[0050] Under the action of the roller 13 , the friction between the cross bar 12 and the guide rail 11 is greatly reduced, making the battery cell easier to rotate and preventing the cross bar 12 from getting stuck on the clamping plate 4 .

[0051] The clamping plate 4 is in an "X" shape, and after clamping the battery cell, the top of the battery cell is also clamped and fixed.

[0052] The clamping plate 4 can be directly realized by existing technology, and some clamping mechanisms can be directly used universally. When the impact shaft impacts the battery cell, the cross bar 12 can effectively impact all sides of the battery cell without causing direct impact on the clamping plate 4.

[0053] The method of using the battery cell testing device comprises the following steps:

[0054] S1: Fix the battery cell to the clamping plate 4, and then insert the shaft 21 in one of the synchronous translation mechanisms 3.

[0055] To clamping plate 4

[0056] The interior of the pipe 52 on the upper part is restricted so that it automatically engages;

[0057] S2: Place the crossbar 12 on the battery cell;

[0058] S3: Turn on the impact machine body 1 and perform an impact test on the top surface of the battery cell;

[0059] S4: After the test is completed, the impact shaft is raised, and then the battery cell is adjusted to other surfaces that need to be impacted by rotating between the shafts 1 and 21, and the test is continued until the test is completed.

[0060] The working principle of the present invention is as follows: after the battery core is fixed on the clamping plate 4, the shaft 1 21 on one side is pushed to insert the shaft 1 21 into the pipe 52. As the shaft 1 21 is pushed, the sleeve 32 on the shaft 1 21 pulls the wire rope 38, so that the other end of the wire rope 38 is wound around the shaft 37 to rotate, and the shaft 37 drives the gear 1 39 to rotate, and the gear 1 39 drives the gear 2 311 to rotate in the opposite direction, and the gear 2 311 drives the rotating block 312 on the shaft 4 310 to rotate, and the rotating block 312 pushes the shaft 2 28 to move horizontally through the tooth groove 313 on the shaft 2 28, so that the shaft 1 21 and the shaft 2 28 synchronously clamp the clamping plate 4, and in the process of pushing the shaft 1 21, under the restriction of the shaft 5 56, the shaft 1 21 and the shaft 2 28 push the clamping rod 58 to rotate into the pipe 52, so that the clamping rod 58 drives the arc rod 510 on the rotating plate 57 to rotate, so that the arc rod 510 passes through the pipe 5 2 and the circular holes 511 on the polygonal column 1 22 and the polygonal column 2 29 restrict the shaft 1 and the shaft 2 28. At this time, the operator cannot pull out the shaft 1 21, and then place the cross bar 12 on the battery cell, turn on the impact machine body 1, and punch one side of the battery cell. After the test on one side is completed, the punching shaft is raised, and then the turntable 61 is rotated. The turntable 61 drives the shaft 1 21 to rotate. Under the engagement of the polygonal column 1 22 and the polygonal column 2 29 with the polygonal groove 53, the shaft 1 21 drives the clamping plate 4 to rotate. When it rotates 90°, the limiting column 63 is again engaged with the card slot 62 on the turntable 61, automatically limiting the turntable 61 so that the shaft 1 21 cannot continue to rotate. At this time, the battery cell on the support plate rotates 90° and flips to the other side. Then, the impact machine body 1 is turned on again, and after impacting the other side of the battery cell, it is rotated twice 90°, that is, 180°, and turned to the other side for impact test.When the shaft 21 in the other set of synchronous translation mechanisms 3 is inserted into the pipe 52, the shaft 21 drives the clamping rod 58 to rotate in the opposite direction, so that the clamping rod 58 drives the rotating plate 57 to rotate, thereby causing the arc rod 510 to release the restriction of the previously inserted shaft 21 and restrict the newly inserted shaft 21. In the process of pushing the shaft 21, the rotation of the shaft 4 310 will store power for the torsion spring disk 301. After contacting the restriction, the shaft 21 is pulled out of the pipe 52 under the torsion force generated by the torsion spring disk 301 returning to its original shape. The fixed seat 51 on the clamping plate 4 is always supported by the shaft 21 and cannot be pulled out at the same time. If it is necessary to remove the To test the other two sides of the cell bottom, simply rotate shaft 1 21 to position the clamping plate 4 in a vertical position, then push the other set of shafts 1 21. The pushed shafts 1 21 are inserted into the pipe 52 at the bottom of the fixing seat 51. As shaft 1 21 advances, the trigger block 54 is squeezed, pressing against the latch 58, releasing the conversion mechanism 5 from securing the previously restrained shaft 1 21. Then, rotate shaft 1 21 inserted into the pipe 52 at the bottom of the fixing seat 51 90°, reinsert the newly released shaft 1 21, and then directly rotate the newly inserted shaft 1 21 to test the remaining two sides of the cell according to the above principle.

[0061] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include" or "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0062] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A battery cell testing device, comprising an impact machine body (1) and guide rails (11) mounted relative to the impact machine body (1), with a crossbar (12) mounted between the guide rails (11), characterized in that: Also includes: A steering mechanism (2), the steering mechanism (2) being mounted on the impact machine body (1); A synchronous translation mechanism (3) is installed on the impact machine body (1), and the synchronous translation mechanism (3) drives the steering mechanism (2) to move closer to or away from the battery cell; A clamping plate (4), the clamping plate (4) clamps the battery cell; A conversion mechanism (5), the conversion mechanism (5) is mounted on the clamping plate (4) and connected to the steering mechanism (2), the steering mechanism (2) steers the clamping plate (4) holding the battery cell, and the conversion mechanism (5) keeps the steering mechanism (2) always connected to the clamping plate (4); The steering mechanism (2) comprises a shaft (21) which is installed through the impact machine body (1), and a polygonal column (22) is installed on the top of the shaft (21); The device further comprises a second support rod (25) and a third support rod (26) mounted on the impact machine body (1), wherein the second support rod (25) and the third support rod (26) are both mounted with a second collar (27), a second shaft (28) is mounted through the second collar (27), and a second polygonal column (29) is mounted on the top of the second shaft (28); The conversion mechanism (5) includes a fixed seat (51) mounted on the clamping plate (4), a pipe (52) mounted on the fixed seat (51), and five pipes (52), four of which are mounted in a circular array around the fixed seat (51), and another is mounted at the bottom of the fixed seat (51). Polygonal grooves (53) are provided in the pipes (52), and the polygonal grooves (53) can be engaged with the polygonal column 1 (22) and the polygonal column 2 (29). A trigger block (54) is relatively installed in the pipe (52), and the pipe (52) also includes a groove 2 (55) opened on the fixed seat (51). The grooves There are four grooves (55), which are respectively located between the pipes (52). Axle five (56) is installed in groove two (55), a rotating plate (57) is installed on the rotating plate (57), a clamping rod (58) is installed on the rotating plate (57), a groove three (59) is opened on the pipe (52), the clamping rod (58) passes through the groove three (59), an arc rod (510) is installed on the rotating plate (57), and a circular hole (511) is opened on the pipe (52) and the polygonal column one (22) and the polygonal column two (29), and the arc rod (510) can be engaged with the circular hole (511); During the pushing process of shaft one (21), under the restriction of shaft five (56), shaft one (21) and shaft two (28) push the clamping rod (58) to rotate into the pipe (52), so that the clamping rod (58) drives the arc rod (510) on the rotating plate (57) to rotate, so that the arc rod (510) passes through the pipe (52) and the circular holes (511) on the polygonal column one (22) and the polygonal column two (29), thereby restricting shaft one (21) and shaft two (28); If it is necessary to test the other two sides except the bottom of the battery cell, it is only necessary to rotate shaft one (21) to make the clamping plate (4) in a vertical state, and then push another set of shafts one (21). The pushed shaft one (21) is inserted into the pipe (52) at the bottom of the fixed seat (51). As the shaft one (21) is pushed forward, the trigger block (54) is squeezed and pushed against the clamping rod (58), thereby releasing the fixation of the conversion mechanism (5) on the already restricted shaft one (21).

2. A battery cell testing device according to claim 1, characterized in that: A support rod (23) is installed on the impact machine body (1), a collar (24) is installed on the support rod (23), and the shaft (21) passes through the collar (24); A limiting mechanism (6) is installed on the steering mechanism (2), and the limiting mechanism (6) limits the angle of each rotation of the clamping plate (4).

3. The battery cell testing device according to claim 2, characterized in that: The limiting mechanism (6) includes a rotating disk (61) mounted on the first shaft (21), a clamping groove (62) is provided on the edge of the rotating disk (61), and the clamping grooves (62) are four and are arranged in an annular manner with equal distances from each other. The limiting mechanism (6) also includes a limiting column (63) mounted on the impact machine body (1), and the limiting column (63) and the clamping groove (62) are engaged with each other.

4. A battery cell testing device according to claim 3, characterized in that: The synchronous translation mechanism (3) includes a groove one (31) provided on the shaft one (21), a sleeve (32) is installed in the groove one (31), a support rod four (33) is installed on the impact machine body (1), a guide tube (34) is installed on the support rod four (33), a support rod five (35) is installed on the impact machine body (1), there are two support rods five (35), and a guide wheel (36) is installed on each of the support rods five (35), a shaft three (37) is installed on the impact machine body (1), a steel wire rope (38) is installed on the sleeve (32), and the steel wire rope (38) passes through the impact machine body (1). The guide tube (34) is passed through and then wrapped around the guide wheel (36). The other end is wound onto the shaft three (37). The shaft three (37) is provided with a gear one (39). The impact machine body (1) is provided with a shaft four (310). The shaft four (310) is provided with a gear two (311). The gear two (311) and the gear one (39) are meshed with each other. The shaft four (310) is provided with a rotating block (312). The shaft two (28) is provided with a plurality of tooth grooves (313). The rotating block (312) and the tooth grooves (313) are meshed with each other. The shaft four (310) is provided with a reset member (300).

5. The battery cell testing device according to claim 4, characterized in that: The reset member (300) includes a torsion spring disk (301) mounted on a fourth shaft (310), the fourth shaft (310) passing through the torsion spring disk (301), a bracket (302) mounted on the periphery of the torsion spring disk (301), and the bracket (302) is fixedly connected to the impact machine body (1).

6. The battery cell testing device according to claim 5, characterized in that: The steering mechanism (2), the limiting mechanism (6), and the synchronous translation mechanism (3) each have two groups with the same structure, and each group is arranged perpendicular to each other.

7. The battery cell testing device according to claim 6, characterized in that: A roller (13) is installed through the crossbar (12), and the roller (13) and the guide rail (11) are engaged with each other.

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