CN220357108U - Lithium battery detection clamp - Google Patents

Abstract

The utility model discloses a lithium battery detection clamp, and relates to the technical field of lithium battery detection. The lithium battery detection clamp comprises a bracket, a clamping assembly and a fixing piece. Be provided with the erection column on the support, the clamping assembly includes first splint and second splint, first splint with second splint middle part is buckled dorsad in order to form the centre gripping chamber between first splint with the second splint, first splint sets up on the support, the second splint slidable cover is established on the erection column, so that the second splint is close to and is kept away from first splint, the mounting can be overlapped and is established on the erection column. The lithium battery detection clamp disclosed by the utility model is simple in structure and high in structural stability, and meanwhile, the clamping assembly can also clamp lithium batteries with different sizes.

Description

Lithium battery detection clamp

Technical Field

The utility model relates to the technical field of lithium battery detection, in particular to a lithium battery detection clamp.

Background

Lithium batteries come in a variety of designs including common cylindrical batteries, prismatic batteries, and button cells. The cylindrical battery has the longest development time, the most mature technology and higher standardization degree, and is widely applied to consumer electronics, energy storage markets, light power and electric vehicles.

In the production process of the cylindrical battery, the produced cylindrical battery needs to be sampled and detected. However, the existing clamp is used for clamping the lithium battery by closing the two clamping arms by means of springs, and the clamping is easy to loosen due to external vibration. Meanwhile, the existing clamps have limited clamping sizes, and a plurality of clamps with different models are required to be prepared for clamping batteries with different sizes.

Disclosure of Invention

The utility model aims to solve at least one of the technical problems in the related art to a certain extent, and can improve the clamping quality and the clamping radius of the clamp on the premise of not influencing the detection result.

For this purpose, an embodiment of the present utility model proposes a lithium battery detection jig.

According to an embodiment of the utility model, a lithium battery detection clamp comprises: and the bracket is provided with a mounting column. The clamping assembly comprises a first clamping plate and a second clamping plate, the middle parts of the first clamping plate and the second clamping plate are bent back to form a clamping cavity between the first clamping plate and the second clamping plate, the first clamping plate is arranged on the support, and the second clamping plate is slidably sleeved on the mounting column, so that the second clamping plate is close to and far away from the first clamping plate. The fixing piece can be sleeved on the mounting column.

According to the lithium battery detection clamp provided by the embodiment of the utility model, the support with the mounting column is arranged, and the first clamping plate is fixedly arranged on the support, so that the stability and the supporting strength of the first clamping plate are improved. The second clamping plate is slidably sleeved on the mounting column, and the second clamping plate can be close to and far away from the first clamping plate, so that the clamping radius of the clamping assembly can be adjusted.

In some embodiments, the second clamping plate is provided with a mounting hole, the mounting hole is sleeved on the mounting column, the diameter of the mounting hole is larger than that of the mounting column, and an elastic clamping piece is arranged in the mounting hole. The mounting column is provided with a clamping groove, at least part of the fixing piece is positioned in the mounting hole, and at least part of the fixing piece extrudes the elastic clamping piece so that the elastic clamping piece is clamped in the clamping groove.

In some embodiments, a positioning ring is arranged in the mounting hole, the positioning ring is sleeved on the mounting column, the diameter of the positioning ring is equal to that of the mounting column, and the elastic clamping piece is arranged on the positioning ring. The inner wall of the mounting hole is provided with an internal thread, the fixing piece is provided with an external thread, and the fixing piece is in threaded connection in the mounting hole.

In some embodiments, a clamping cone sleeve is arranged on the fixing piece, and the clamping cone sleeve has an involute structure in the axial direction of the mounting column. The end part of the elastic clamping piece is provided with an inclined plane, and the involute structure of the clamping taper sleeve is suitable for extruding the inclined plane of the elastic clamping piece so that the elastic clamping piece is clamped in the clamping groove.

In some embodiments, the clamping assembly further comprises a plurality of first clamping shims and a plurality of second clamping shims. In the radial direction of the first clamping plate, a plurality of first clamping gaskets are sleeved in the first clamping plate, and the circle centers of the first clamping gaskets are coincident and have different arc lengths. And in the radial direction of the second clamping plate, a plurality of second clamping gaskets are sleeved in the second clamping plate, and the circle centers of the second clamping gaskets are coincident and have different arc lengths.

In some embodiments, the lithium battery detection fixture further comprises a limit assembly comprising a limit piece. Limiting holes are formed in the first clamping plate, the second clamping plate, the plurality of first clamping gaskets and the plurality of second clamping gaskets. The first clamping gaskets and the second clamping gaskets are respectively provided with a limiting piece, and the limiting pieces are suitable for being installed in the limiting holes.

In some embodiments, the limiting assembly further includes a plurality of magnetic members, and the first clamping plate, the second clamping plate, the plurality of first clamping gaskets and the plurality of second clamping gaskets are all provided with fixing holes, and the plurality of magnetic members are arranged in the fixing holes in a one-to-one correspondence manner. In the radial direction of the clamping assembly, a plurality of magnetic pieces adsorb each other and/or a plurality of magnetic pieces adsorb the limiting piece.

In some embodiments, the centers of the plurality of magnetic members and the plurality of stopper members are located on the same line in a radial direction of the clamping assembly.

In some embodiments, the limiting assembly is a plurality of limiting assemblies, and the plurality of limiting assemblies are arranged at intervals along the circumference of the clamping assembly.

In some embodiments, the clamping assembly further comprises a first fixed shim and a second fixed shim, the first fixed shim and the second fixed shim are both provided with the limiting piece, the first fixed shim is mounted on the first clamping shim through the limiting piece, and the second fixed shim is mounted on the second clamping shim through the limiting piece.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a lithium battery detection jig according to an embodiment of the present utility model.

Fig. 2 is a front sectional view of a lithium battery detection jig according to an embodiment of the present utility model.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is an enlarged schematic view of a portion B in fig. 2.

Fig. 5 is a schematic view of a first clamping plate and a second clamping plate in a lithium battery detection clamp according to an embodiment of the utility model.

Fig. 6 is a schematic view of a first clamping pad and a second clamping pad in a lithium battery detection fixture according to an embodiment of the present utility model.

Fig. 7 is a schematic view of a first fixing spacer and a second fixing spacer in a lithium battery detection jig according to an embodiment of the utility model.

Reference numerals:

the lithium battery detection clamp 100, a bracket 10, a mounting column 11, a clamping groove 12, a clamping assembly 20, a first clamping plate 21, a first fixing gasket 211, a second clamping plate 22, a second fixing gasket 221, a mounting hole 23, an elastic clamping piece 24, a positioning ring 25, a first clamping gasket 26, a second clamping gasket 27, a limiting hole 28, a fixing hole 29, a fixing piece 30, a clamping taper sleeve 31, a limiting assembly 40, a limiting piece 41 and a magnetic piece 42.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model aims to solve at least one of the technical problems in the related art to a certain extent, and can improve the clamping quality and the clamping radius of the clamp on the premise of not influencing the detection result.

As shown in fig. 1 to 7, the lithium battery test fixture 100 according to the embodiment of the present utility model includes a bracket 10, a clamping assembly 20, and a fixing member 30.

The bracket 10 is provided with a mounting post 11.

In particular, as shown in fig. 1-2, in the present application, the brackets 10 are generally provided in two, and the two brackets 10 are provided opposite to each other. The bracket 10 has a substantially rectangular parallelepiped structure, and an upper end portion of the bracket 10 has a flat surface. The number of the mounting posts 11 is two, and the two mounting posts 11 are respectively arranged on the planes of the upper end parts of the two brackets 10. The mounting post 11 has a substantially cylindrical structure, and the axial direction of the mounting post 11 coincides with the axial direction of the bracket 10, thereby contributing to the improvement of the structural strength of the mounting post 11 on the bracket 10.

The clamping assembly 20 comprises a first clamping plate 21 and a second clamping plate 22. The first clamping plate 21 is arranged on the bracket 10, the second clamping plate 22 is slidably sleeved on the mounting column 11, and the second clamping plate 22 can be close to and far away from the first clamping plate 21 along the axial direction of the mounting column 11. The fixing member 30 may be sleeved on the mounting post 11 to fix the second clamping plate 22.

Specifically, as shown in fig. 1 to 2, the first clamping plate 21 has a semicircular structure, and the number of brackets 10 is two. One end of the outer peripheral surface of the first clamping plate 21 is fixedly provided on one bracket 10, and the other end of the outer peripheral surface of the first clamping plate 21 is fixedly provided on the other bracket 10. Thereby, stability between the first clamping plate 21 and the bracket 10 is effectively improved.

It is understood that in this application, the connection between the first clamping plate 21 and the bracket 10 includes, but is not limited to, welding, clamping, integral casting, and the like.

The second clamping plate 22 is also of a generally semicircular configuration, and the two ends of the second clamping plate 22 have horizontal protrusions. The second clamping plate 22 can be sleeved on the mounting column 11 through the horizontal protruding part, and the second clamping plate 22 can freely slide along the axial direction of the mounting column 11. Thus, by adjusting the position of the second clamping plate 22, the clampable radius of the clamping assembly 20 can be adjusted.

According to the lithium battery detection jig 100 of the embodiment of the utility model, by providing the bracket 10 having the mounting posts 11 and fixedly providing the first clamping plate 21 on the bracket 10, the stability and the supporting strength of the first clamping plate 21 are improved. The second clamping plate 22 is slidably fitted over the mounting post 11, and the second clamping plate 22 is movable toward and away from the first clamping plate 21, thereby enabling adjustment of the clamping radius of the clamping assembly 20.

In some embodiments, as shown in fig. 2 and 4, the second clamping plate 22 is provided with a mounting hole 23, and the mounting hole 23 is sleeved on the mounting post 11. The diameter of the mounting hole 23 is larger than that of the mounting column 11, and an elastic clamping piece 24 is arranged in the mounting hole 23. The mounting post 11 is provided with a clamping groove 12, and at least part of the fixing piece 30 is positioned in the mounting hole 23. At least part of the fixing member 30 presses the elastic clamping member 24, so that the elastic clamping member 24 is clamped in the clamping groove 12.

Specifically, as shown in fig. 2 and 4, both end portions of the second clamping plate 22 have horizontal protrusions through which the mounting holes 23 vertically penetrate. The diameter of the mounting hole 23 is larger than that of the mounting post 11, and thus, the inspector can rapidly move the second clamping plate 22, and the inspection speed of the lithium battery is improved.

The mounting post 11 is provided with a clamping groove 12 on its peripheral wall, and an elastic clamping piece 24 is provided in the mounting hole 23 in the vertical direction. Therefore, when the lower end of the fixing piece 30 extends into the mounting hole 23, the fixing piece 30 can press the elastic clamping piece 24 inwards, and the elastic clamping piece 24 is clamped in the clamping groove 12. Thereby, the fixation of the second clamping plate 22 is achieved.

In some embodiments, as shown in fig. 2 and 4, a locating ring 25 is disposed within the mounting hole 23. The locating ring 25 is sleeved on the mounting column 11, the diameter of the locating ring 25 is equal to that of the mounting column 11, and the elastic clamping piece 24 is arranged on the locating ring 25. The inner wall of the mounting hole 23 is provided with internal threads, the fixing piece 30 is provided with external threads, and the fixing piece 30 is in threaded connection in the mounting hole 23.

Specifically, as shown in fig. 2 and 4, the positioning ring 25 is provided in the mounting hole 23, so that stability of the second clamping plate 22 during movement is effectively ensured.

Further, the elastic clamping piece 24 is arranged on the positioning ring 25, so that the elastic clamping piece 24 can be vertically arranged in the mounting hole 23, and the fixing piece 30 can better press the elastic clamping piece 24.

The fixing piece 30 is in threaded connection in the mounting hole 23, so that stability between the fixing piece 30 and the second clamping plate 22 is effectively improved, and meanwhile, pressure of the fixing piece 30 to the elastic clamping piece 24 is also improved, and the clamping effect of the elastic clamping piece 24 is better.

In some embodiments, as shown in fig. 2 and 4, a clamping cone 31 is provided on the fixing member 30, and the clamping cone 31 has an involute structure in the axial direction of the mounting post 11. The end of the elastic clamping piece 24 is provided with an inclined plane, and the involute structure of the clamping taper sleeve 31 is suitable for extruding the inclined plane of the elastic clamping piece 24 so as to clamp the elastic clamping piece 24 in the clamping groove 12.

Specifically, as shown in fig. 2 and 4, a clamping cone 31 is provided at the lower end of the fixing member 30, and the clamping cone 31 has a substantially cylindrical structure. The diameter of the outer wall of the clamping cone 31 remains unchanged in the axial direction of the clamping cone 31. Thus, the clamping cone 31 is less likely to collide with each other when the clamping cone 31 moves into the mounting hole 23.

The diameter of the inner wall of the clamping cone sleeve 31 gradually becomes larger to form an involute structure. Meanwhile, the end of the elastic clip 24 has an inclined surface. Therefore, in the process that the clamping taper sleeve 31 extrudes the elastic clamping piece 24, the involute structure and the inclined plane improve the contact area between the clamping taper sleeve 31 and the elastic clamping piece 24, and effectively improve the stress of the elastic clamping piece 24.

In some embodiments, as shown in fig. 1-7, the clamping assembly 20 further includes a plurality of first clamping shims 26 and a plurality of second clamping shims 27. In the radial direction of the first clamping plate 21, a plurality of first clamping gaskets 26 are arranged in the first clamping plate 21 in a sleeved mode, and the circle centers of the plurality of first clamping gaskets 26 are coincident and arc lengths are different. In the radial direction of the second clamping plate 22, a plurality of second clamping gaskets 27 are sleeved in the second clamping plate 22, and the circle centers of the second clamping gaskets 27 are coincident and have different arc lengths.

It will be appreciated that the clamping radius of the clamping assembly 20 can be adjusted in this application by moving the fixed position of the second clamping plate 22 on the mounting post 11. But may result in insufficient clamping force after long use.

Further, as shown in fig. 1-2, the clamping radius between the first clamping plate 21 and the second clamping plate 22 in the present application is large enough to meet the requirements of the clamping of the lithium battery under standardization. The actual clamping radius of the clamping assembly 20 can be changed by adding a plurality of first clamping shims 26 and a plurality of second clamping shims 27 to the interior of the first clamping plate 21 and the second clamping plate 22. At the same time, the fixing position of the second clamping plate 22 can be kept unchanged all the time, so that the stability of the second clamping plate 22 is improved, and the adjustable clamping radius of the clamping assembly 20 is also satisfied.

In some embodiments, as shown in fig. 2-7, lithium battery detection fixture 100 further includes a stop assembly 40, stop assembly 40 including a stop 41. Limiting holes 28 are formed in the first clamping plate 21, the second clamping plate 22, the first clamping gaskets 26 and the second clamping gaskets 27. The plurality of first clamping shims 26 and the plurality of second clamping shims 27 are each provided with a stop 41, and the stop 41 is adapted to fit within the stop hole 28.

Specifically, as shown in fig. 3, 5 and 6, the plurality of first clamping shims 26 and the plurality of second clamping shims 27 are identical in structure and different in specific size.

Taking a certain first clamping pad 26 as an example, the first clamping pad 26 is an arc-shaped pad. At the middle position of the first clamping gasket 26, a T-shaped notch is arranged on the inner wall of the first clamping gasket 26, and the T-shaped notch is a limiting hole 28. A T-block is provided on the outer wall of the first clamping washer 26, which T-block is a stop 41.

Meanwhile, the limit holes 28 and the limit pieces 41 on the first clamping gaskets 26 and the second clamping gaskets 27 are identical in structure and size. Thus, the plurality of first clamping pads 26 can be connected to each other, and the plurality of second clamping pads 27 can be connected to each other.

The first clamping plate 21 and the second clamping plate 22 need only be provided with the limiting holes 28, and the limiting members 41 need not be provided.

In some embodiments, as shown in fig. 2-7, the limiting assembly 40 further includes a plurality of magnetic members 42, where the fixing holes 29 are disposed on the first clamping plate 21, the second clamping plate 22, the plurality of first clamping pads 26, and the plurality of second clamping pads 27, and the plurality of magnetic members 42 are disposed in the fixing holes 29 in a one-to-one correspondence. In the radial direction of the clamping assembly 20, the plurality of magnetic members 42 adsorb to each other and/or the plurality of magnetic members 42 adsorb the limiter 41.

It will be appreciated that the stop 41 in this application is a metal piece. Therefore, by arranging the plurality of magnetic members 42, after the plurality of first clamping gaskets 26 and the plurality of second clamping gaskets 27 are mounted between the first clamping plate 21 and the second clamping plate 22, the plurality of magnetic members 42 can be mutually attracted to each other, and meanwhile, the plurality of magnetic members 42 can also be attracted to the plurality of limiting members 41, so that the overall uniformity and stability of the clamping assembly 20 are effectively improved.

In some embodiments, as shown in fig. 2-7, the centers of the plurality of magnetic members 42 and the plurality of stop members 41 are collinear in the radial direction of the clamp assembly 20.

It can be appreciated that the plurality of magnetic members 42 and the plurality of limiting members 41 are disposed on the same straight line, so that the attractive force directions of the plurality of magnetic members 42 are consistent, the problem of mutual interference between the plurality of magnetic members 42 is avoided, and the stability of the clamping assembly 20 is improved.

In some embodiments, as shown in fig. 2, the spacing assembly 40 is a plurality of the spacing assemblies 40, and the plurality of spacing assemblies 40 are circumferentially spaced along the clamping assembly 20.

Specifically, as shown in fig. 2, a plurality of limit assemblies 40 are disposed at intervals in the circumferential direction of the clamping assembly 20, further improving the stability of the limit assemblies 40.

In some embodiments, as shown in fig. 2-7, the clamping assembly 20 further includes a first fixing spacer 211 and a second fixing spacer 221, wherein a limiting member 41 is disposed on each of the first fixing spacer 211 and the second fixing spacer 221, the first fixing spacer 211 is mounted on the first clamping spacer 26 through the limiting member 41, and the second fixing spacer 221 is mounted on the second clamping spacer 27 through the limiting member 41.

It will be appreciated that the first securement pad 211 and the second securement pad 221 are the two pads at the very middle of the clamp assembly 20. The first fixing spacer 211 and the second fixing spacer 221 do not need to be provided with the limiting hole 28 and the fixing hole 29, thereby being beneficial to improving the structural strength of the first fixing spacer 211 and the second fixing spacer 221. Since the first and second fixing spacers 211 and 221 are directly clamped to the cylindrical battery. Therefore, the higher the structural strength of the first fixing spacer 211 and the second fixing spacer 221 is, the better the clamping effect thereof is.

One specific implementation of the lithium battery test fixture 100 according to the present application is as follows:

step 1: the fixing member 30 is rotated, and the fixing member 30 drives the clamping cone 31 to move upwards and separate from the second clamping plate 22. The clamping taper sleeve 31 no longer clamps the elastic clamping strip 24, the elastic clamping strip 24 rotates outwards under the action of self elasticity, the elastic clamping strip 24 is separated from the mounting column 11, the second clamping plate 22 is pulled, and the second clamping plate 22 moves upwards along the mounting column 11 and is separated from the mounting column 11.

Step 2: the first fixing pad 211 and the second fixing pad 221 on the second clamping plate 22 and the first clamping plate 21 are pulled, and the fixing pads are removed from the first clamping pad 26 and the second clamping pad 27. And then the clamping gasket is pulled, and the clamping gasket drives the limiting piece 41 to move outwards, so that the limiting piece 41 is not aligned with the magnetic piece 42 any more, and the magnetic piece 42 is not sucked against the limiting piece 41 any more, so that the gasket 9 is taken down. And calculating the number of clamping gaskets to be taken down according to the diameter of the lithium battery to be clamped, and repeating the operation. After the clamping pad is removed, the fixed pad is replaced on the remaining clamping pads.

Step 3: the lithium battery to be detected is placed on the clamping pad at the top of the first clamping plate 21, and then the second clamping plate 22 is moved to be right above the first clamping plate 21. The second clamping plate 22 is pushed, the second clamping plate 22 moves downwards along the mounting post 11, and the second clamping plate 22 and the first clamping plate 21 clamp the lithium battery on the clamping gasket.

Step 4: the fixing member 30 is replaced on top of the second clamping plate 22 and the fixing member 30 is lowered into the mounting hole 23. The fixing piece 30 drives the clamping taper sleeve 31 to descend, the clamping taper sleeve 31 presses the inclined surface of the outer wall of the elastic clamping strip 24 to enable the elastic clamping strip 24 to rotate inwards, the elastic clamping strip 24 can enter the mounting column 11, and therefore the second clamping plate 22 is fixed on the mounting column 11 and the first clamping plate 21.

In the description of the present utility model, 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", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A lithium battery detection fixture, comprising:

the bracket is provided with a mounting column;

the clamping assembly comprises a first clamping plate and a second clamping plate, the middle parts of the first clamping plate and the second clamping plate are bent back to form a clamping cavity between the first clamping plate and the second clamping plate, the first clamping plate is arranged on the bracket, and the second clamping plate is slidably sleeved on the mounting column so that the second clamping plate is close to and far away from the first clamping plate;

the fixing piece can be sleeved on the mounting column.

2. The lithium battery detection clamp according to claim 1, wherein the second clamping plate is provided with a mounting hole, the mounting hole is sleeved on the mounting column, the diameter of the mounting hole is larger than that of the mounting column, and an elastic clamping piece is arranged in the mounting hole;

the mounting column is provided with a clamping groove, at least part of the fixing piece is positioned in the mounting hole, and at least part of the fixing piece extrudes the elastic clamping piece so that the elastic clamping piece is clamped in the clamping groove.

3. The lithium battery detection clamp according to claim 2, wherein a positioning ring is arranged in the mounting hole, the positioning ring is sleeved on the mounting column, the diameter of the positioning ring is equal to that of the mounting column, and the elastic clamping piece is arranged on the positioning ring;

the inner wall of the mounting hole is provided with an internal thread, the fixing piece is provided with an external thread, and the fixing piece is in threaded connection in the mounting hole.

4. The lithium battery detection fixture according to claim 3, wherein the fixing member is provided with a clamping taper sleeve, and the clamping taper sleeve has an involute structure in the axial direction of the mounting column;

the end part of the elastic clamping piece is provided with an inclined plane, and the involute structure of the clamping taper sleeve is suitable for extruding the inclined plane of the elastic clamping piece so that the elastic clamping piece is clamped in the clamping groove.

5. The lithium battery detection fixture of claim 1, wherein the clamping assembly further comprises a plurality of first clamping shims and a plurality of second clamping shims;

in the radial direction of the first clamping plate, a plurality of first clamping gaskets are sleeved in the first clamping plate, and the circle centers of the first clamping gaskets are coincident and have different arc lengths;

and in the radial direction of the second clamping plate, a plurality of second clamping gaskets are sleeved in the second clamping plate, and the circle centers of the second clamping gaskets are coincident and have different arc lengths.

6. The lithium battery detection fixture of claim 5, further comprising a limit assembly, the limit assembly comprising a limit;

limiting holes are formed in the first clamping plate, the second clamping plate, the plurality of first clamping gaskets and the plurality of second clamping gaskets;

the first clamping gaskets and the second clamping gaskets are respectively provided with a limiting piece, and the limiting pieces are suitable for being installed in the limiting holes.

7. The lithium battery detection clamp according to claim 6, wherein the limiting assembly further comprises a plurality of magnetic pieces, the first clamping plate, the second clamping plate, the first clamping gaskets and the second clamping gaskets are respectively provided with a fixing hole, and the magnetic pieces are arranged in the fixing holes in a one-to-one correspondence manner;

in the radial direction of the clamping assembly, a plurality of magnetic pieces adsorb each other and/or a plurality of magnetic pieces adsorb the limiting piece.

8. The lithium battery detection fixture of claim 7, wherein centers of the plurality of magnetic members and the plurality of stopper members are located on the same line in a radial direction of the clamping assembly.

9. The lithium battery detection fixture of claim 8, wherein the plurality of limiting assemblies are arranged at intervals along the circumference of the clamping assembly.

10. The lithium battery detection fixture of claim 7, wherein the clamping assembly further comprises a first fixed shim and a second fixed shim, wherein the first fixed shim and the second fixed shim are both provided with the limiting piece, the first fixed shim is mounted on the first clamping shim through the limiting piece, and the second fixed shim is mounted on the second clamping shim through the limiting piece.