Fixing device for industrial CT (computed tomography) detection battery cell

Abstract

The utility model relates to the technical field of battery cell tools, in particular to a fixing device of an industrial CT detection battery cell, which comprises a base, a stand column and a test board, a tray is fixedly arranged at the upper end of the stand column, and the lower end of the stand column is fixedly connected with the base; the two sliding blocks are detachably arranged at the top of the tray, the distance between the two sliding blocks can be adjusted, inclined surfaces are arranged at the opposite ends of the two sliding blocks, and the inclined surfaces are used for supporting two adjacent end surfaces of a battery cell; the fastening assembly is fixedly arranged at the top of the tray and is used for fixing the battery cell on the two sliding blocks; according to the fixing device for the industrial CT detection battery cell, the distance between the two sliding blocks can be adjusted to adapt to installation of battery cells with different sizes, the fixing device is simple and convenient to use, meanwhile, the battery cell is fixed to the two sliding blocks through the fastening assemblies, the battery cell is not prone to loosening in the testing process, and the testing precision can be improved conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core tooling, in particular to a fixing device for detecting a battery core by industrial CT. Background Art

[0002] The detection method of the battery core of a lithium battery is to perform computerized tomography and visual data analysis by industrial CT. For example, an online industrial CT detection device and its detection method disclosed in CN116689314A can deeply detect the internal state of a lithium battery by industrial CT, and scan and analyze defects such as electrode fracture, electrode fold, pole piece alignment, and internal foreign matters. Intuitively display the internal structure and defect conditions of the battery core, which is convenient for engineers to timely discover and solve possible internal defects of the lithium battery, facilitate the improvement of the battery core manufacturing process, and improve the safety and reliability of the battery.

[0003] When detecting a battery core by industrial CT, the battery core sample needs to be fixed on the sample table. The existing fixing method is to cut foam plastic into a suitable size for fixing the battery core. For battery cores of different sizes, plastic foam of different sizes needs to be cut for fixing, which is rather cumbersome, and the battery core is prone to loosen during the fixing process, affecting the test accuracy. Summary of the Utility Model

[0004] In view of this, the utility model provides a fixing device for detecting a battery core by industrial CT. By setting that the distance between two sliders can be adjusted, it can adapt to the installation of battery cores of different sizes, which is relatively simple and convenient. At the same time, the battery core is fixed on the two sliders through a fastening component, and the battery core is not prone to loosen during the test process, which is convenient for improving the test accuracy.

[0005] The technical solution of the utility model is realized as follows:

[0006] The utility model provides a fixing device for detecting a battery core by industrial CT, including a base, a column, and a test table. Among them,

[0007] The test table is fixedly arranged above the base through the column;

[0008] The test table includes a tray, sliders, and a fastening component. Among them,

[0009] The tray is fixedly arranged at the upper end of the column, and the lower end of the column is fixedly connected to the base;

[0010] Two sliders are detachably arranged on the top of the tray, the distance between the two sliders can be adjusted, and inclined surfaces are arranged on the opposite ends of the two sliders, and the inclined surfaces are used to support two adjacent end faces of the battery core;

[0011] The fastening assembly is fixedly arranged on the top of the tray and is used to fix the battery cell on the two sliders.

[0012] On the basis of the above technical solutions, preferably, the test bench further includes fixing pins and limit blocks, wherein,

[0013] One fixing pin is arranged at each of the opposite ends of the two sliders. The fixing pins are horizontally arranged, and the side of the fixing pin abuts against the side of the slider at the corresponding position.

[0014] One limit block is arranged on each side of the slider, and the two limit blocks are fixedly arranged on the top of the tray. A plurality of placement grooves are equidistantly arranged along a first preset direction on the opposite ends of the two limit blocks. The two ends of the fixing pin are placed in the corresponding placement grooves. The first preset direction is a straight line direction parallel to the horizontal plane and perpendicular to the fixing pin.

[0015] On the basis of the above technical solutions, preferably, a positioning protrusion is fixedly arranged on the side of the fixing pin, and a positioning hole is arranged at the corresponding position of one end of the slider. Among them,

[0016] One end of the positioning protrusion is inserted into the positioning hole.

[0017] On the basis of the above technical solutions, preferably, a groove is arranged on the top of the tray, and the bottom of the slider is slidably arranged in the groove along the first preset direction.

[0018] On the basis of the above technical solutions, preferably, the test bench further includes a track and a track wheel, wherein,

[0019] Two tracks are fixedly arranged on the bottom of the groove, and the tracks extend along the first preset direction;

[0020] A plurality of track wheels are rotatably arranged at the bottom of the slider and corresponding to the tracks, and the plurality of track wheels are rollingly arranged on the corresponding tracks.

[0021] On the basis of the above technical solutions, preferably, an installation groove is arranged at the bottom of the slider and corresponding to the track wheel. Among them,

[0022] The track wheel is rotatably arranged in the corresponding installation groove.

[0023] On the basis of the above technical solutions, preferably, a through hole is vertically penetrated through the bottom of the groove, and the through hole is located between the two tracks.

[0024] On the basis of the above technical solutions, preferably, the fastening assembly includes a support and a bolt, wherein,

[0025] The support is fixedly arranged on the top of the tray;

[0026] The bolt penetrates through the support along the axial direction of the fixing pin and is screwed, and the central axis of the bolt intersects with the midpoint of the virtual connection line of the two sliders.

[0027] On the basis of the above technical solutions, preferably, a rectangular limiting protrusion is fixedly arranged on one side of the inclined plane, wherein,

[0028] The battery cell is clamped between the limiting protrusion and the bolt.

[0029] On the basis of the above technical solutions, preferably, it further includes a support column, wherein,

[0030] The support column is arranged vertically;

[0031] There are two test benches, the upper end of the support column is fixedly connected to the bottom of the upper test bench;

[0032] A jack is arranged on the top of the lower test bench, and the lower end of the support column is inserted into the jack.

[0033] A fixing device for an industrial CT to detect a battery cell of the present utility model has the following

[0034] Beneficial effects compared with the prior art:

[0035] (1) By setting that the distance between the two sliders can be adjusted, it is convenient to adapt to the installation of battery cells of different sizes and provides convenience for the testing of battery cells.

[0036] (2) The battery cell is fixed on the two sliders through the fastening assembly, so that the battery cell is not easy to loosen during the testing process, thereby improving the testing accuracy.

[0037] (3) By setting the test benches as two, one above the other, it is convenient to fix two battery cells at one time, and the CT testing of two battery cells can be completed at one time, improving the testing efficiency. Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0039] Figure 1 It is a perspective view of a fixing device for an industrial CT to detect a battery cell of the present utility model;

[0040] Figure 2 The front view of a fixing device for industrial CT to detect electric cores according to the present utility model;

[0041] Figure 3 The perspective view of the test bench according to the present utility model;

[0042] Figure 4 The perspective view of the slider according to the present utility model;

[0043] In the figure: 1, base; 2, column; 3, test bench; 4, support column; 5, electric core; 31, tray; 32, slider; 33, fastening assembly; 34, fixing pin; 35, limiting block; 36, track; 37, rail wheel; 301, inclined plane; 302, placement groove; 303, positioning protrusion; 304, positioning hole; 305, groove; 306, installation groove; 307, through hole; 308, limiting protrusion; 309, jack; 331, support; 332, bolt. Specific embodiments

[0044] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the specific embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0045] As Figures 1 - 4 shown, a fixing device for industrial CT to detect electric cores according to the present utility model includes a base 1, columns 2 and a test bench 3.

[0046] Among them, four columns 2 are arranged between the base 1 and the test bench 3, and the four columns 2 are arranged in a circumferential matrix around the base 1, and the test bench 3 is fixedly arranged above the base 1 through the columns 2.

[0047] The base 1 is used to be installed on the scanning table of the CT device, and the electric core 5 is installed on the test bench 3. Among them, the test bench 3 can be arranged in a single layer or two or more layers. Figure 1 What is shown is a two-layer design of the test bench 3. Two electric cores 5 can be fixed at one time through the two-layer test bench 3, and the CT tests of two electric cores 5 can be completed at one time, improving the test efficiency. During the test, as Figure 2 shown, the inner side of the dashed box in area A is the CT scanning area.

[0048] When the test bench 3 is provided with upper and lower layers, four support columns 4 are arranged between the two layers of the test bench 3, and the four support columns 4 are distributed in a circumferential matrix around the test bench 3. Among them, the upper end of the support column 4 is fixedly connected to the bottom of the upper test bench 3, and jacks 309 are arranged at the positions corresponding to the support columns 4 on the top of the lower test bench 3. The lower end of the support column 4 is inserted into the jacks 309. In this structure, the upper test bench 3 is supported by the support columns 4. At the same time, the disassembly and installation of the two layers of the test bench 3 can be realized by means of insertion. During the test, as Figure 2 shown, one battery cell 5 is installed on each of the two layers of the test bench 3, and the sharp corners of the two battery cells 5 face each other.

[0049] To improve the stability after the support column 4 and the jack 309 are inserted, the column 2 is set as a hollow tube. Among them, the hollow of the column 2 corresponds to and communicates with the jack 309 up and down. When the support column 4 and the jack 309 are inserted, the support column 4 can be inserted into the hollow of the column 2.

[0050] In the above structure, the test bench 3 includes a tray 31, sliders 32 and a fastening assembly 33. Among them, the tray 31 is fixedly arranged at the upper end of the column 2, and the lower end of the column 2 is fixedly connected to the base 1; two sliders 32 are detachably arranged on the top of the tray 31, and the distance between the two sliders 32 can be adjusted. Bevel surfaces 301 are arranged at the opposite ends of the two sliders 32, and the bevel surfaces 301 are used to support two adjacent end faces of the battery cell 5; the fastening assembly 33 is fixedly arranged on the top of the tray 31 and is used to fix the battery cell 5 on the two sliders 32.

[0051] When installing the battery cell 5, adjust the distance between the two sliders 32 according to the size of the battery cell 5, and then make the side surface of the battery cell 5 contact with the bevel surface 301 so that the battery cell 5 is in the Figure 1 state shown, and then fix the battery cell 5 on the two sliders 32 through the fastening assembly 33.

[0052] Figure 3 The sliders 32 shown in Figure 3 are right-angled triangle shapes, and their bevel surfaces 301 are inclined at 45 degrees. In addition, two sets of sliders 32 with bevel surfaces 301 inclined at 30° and 60°, 15° and 75° are prepared. Since the battery cell 5 is generally square, when photographing a local area, the inclination angle range is 0°-90°. The above three pairs of replaceable sliders 32 with 45° and 45°, 30° and 60°, 15° and 75° can meet the position inclination and fixing requirements of most battery cells 5 during CT testing.

[0053] In the above structure, the detachable structure of the slider 32 is realized by pin connection and positioning. Specifically, the test bench 3 further includes fixing pins 34 and limiting blocks 35. Among them, one fixing pin 34 is provided at each of the opposite ends of the two sliders 32. The fixing pins 34 are horizontally arranged, and the side portions of the fixing pins 34 abut against the side portions of the corresponding sliders 32; one limiting block 35 is provided on each side of the slider 32, and the two limiting blocks 35 are fixedly arranged on the top of the tray 31. A plurality of placing grooves 302 are equidistantly arranged along a first preset direction on the opposite ends of the two limiting blocks 35. The two ends of the fixing pin 34 are placed in the corresponding placing grooves 302. The first preset direction is a linear direction parallel to the horizontal plane and perpendicular to the fixing pin 34.

[0054] When installing the slider 32, as Figure 3 shown, after placing the slider 32 at the required position, put the two ends of the fixing pin 34 into the corresponding placing grooves 302. When the battery cell 5 is placed on the inclined surface 301, under the action of the gravity of the battery cell 5, after placement, the side portion of the slider 32 abuts against the side portion of the fixing pin 34.

[0055] To prevent the slider 32 from skewing, a positioning protrusion 303 is fixedly arranged on the side portion of the fixing pin 34, and a positioning hole 304 is provided at the position of one end of the slider 32 corresponding to the positioning protrusion 303. When abutting, one end of the positioning protrusion 303 is inserted into the positioning hole 304 to maintain the relative position of the fixing pin 34 and the battery cell 5 through the insertion.

[0056] In the above structure, the test bench 3 further includes a track 36 and a track wheel 37. Among them, a groove 305 is provided on the top of the tray 31, and the bottom of the slider 32 is slidably arranged in the groove 305 along the first preset direction; two tracks 36 are fixedly arranged on the bottom of the groove 305, and the track 36 extends along the first preset direction; a plurality of track wheels 37 are rotatably arranged at the bottom of the slider 32 and corresponding to the position of the track 36, and the plurality of track wheels 37 are rollingly arranged on the corresponding track 36 to realize the movement of the slider 32 through the cooperation of the track 36 and the track wheels 37.

[0057] As Figure 4 shown, to facilitate the installation of the track wheels 37, an installation groove 306 is provided at the bottom of the slider 32 corresponding to the position of the track wheels 37 and the groove 305 of the slider 32. Among them, the track wheels 37 are rotatably arranged in the corresponding installation grooves 306.

[0058] In addition, a through hole 307 is vertically penetrated through the bottom of the groove 305. The through hole 307 is located between the two tracks 36. The battery cell 5 is avoided through the groove 305, so that one corner of the battery cell 5 can extend below the tray 31, thereby facilitating the synchronous detection of two layers of battery cells 5.

[0059] The fastening assembly 33 includes a support 331 and a bolt 332. Among them, the support 331 is fixedly arranged on the top of the tray 31; the bolt 332 penetrates through the support 331 along the axial direction of the fixing pin 34 and is screwed. The axis line of the bolt 332 intersects with the midpoint of the virtual connection line of the two sliders 32. In this structure, the bolt 332 is centered relative to the two sliders 32. At the same time, a rectangular limiting protrusion 308 is fixedly arranged on the side of the inclined surface 301 away from the bolt 332. After installing the battery cell 5, screw the bolt 332 to clamp the battery cell 5 between the limiting protrusion 308 and the bolt 332, realizing the fixation of the battery cell 5.

[0060] In addition, in the above structure, except for the battery cell 5, the materials of the other structural components are all plastics. The density of the plastics is relatively low and will not interfere with the imaging effect of the battery cell 5 during the CT scanning process.

[0061] The usage method of a fixing device for an industrial CT to detect battery cells of the present utility model is as follows:

[0062] Before the test, adjust the distance between the two sliders 32 to an appropriate size, then place the fixing pin 34 on the side of the slider 32, put both ends of the fixing pin 34 into the placement grooves 302 at the corresponding positions, insert the positioning protrusion 303 into the positioning hole 304, then place one corner of the battery cell 5 downward and place it between the two sliders 32, and place the side end of the battery cell 5 on the inclined surface 301, and screw the bolt 332 to clamp the battery cell 5 between the limiting protrusion 308 and the bolt 332; after the test, disassemble the battery cell 5.

[0063] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An industrial CT inspection fixture for battery cells, comprising a base (1), a column (2) and a test bench (3), wherein, the test bench (3) is fixedly arranged above the base (1) through the column (2); It is characterized in that: the test bench (3) comprises a tray (31), a slider (32) and a fastening component (33), wherein, the tray (31) is fixedly arranged at the upper end of the column (2), and the lower end of the column (2) is fixedly connected to the base (1); two sliders (32) are detachably arranged on the top of the tray (31), the distance between the two sliders (32) can be adjusted, and inclined surfaces (301) are arranged at the opposite ends of the two sliders (32), and the inclined surfaces (301) are used to support two adjacent end faces of the battery cell (5); the fastening component (33) is fixedly arranged on the top of the tray (31) for fixing the battery cell (5) on the two sliders (32).

2. The fixing device for industrial CT inspection of battery cells according to claim 1, characterized in that: The test bench (3) further comprises fixing pins (34) and limit blocks (35), wherein, one fixing pin (34) is arranged at each of the opposite ends of the two sliders (32), the fixing pins (34) are horizontally arranged, and the side part of the fixing pin (34) abuts against the side part of the slider (32) at the corresponding position; one limit block (35) is arranged on each side of the slider (32), and the two limit blocks (35) are fixedly arranged on the top of the tray (31). A plurality of placement grooves (302) are equidistantly arranged along a first preset direction at the opposite ends of the two limit blocks (35), and the two ends of the fixing pin (34) are placed in the corresponding placement grooves (302). The first preset direction is a straight line direction parallel to the horizontal plane and perpendicular to the fixing pin (34).

3. The fixing device for industrial CT to detect electric cores according to claim 2, characterized in that: A positioning protrusion (303) is fixedly arranged on the side part of the fixing pin (34), and a positioning hole (304) is arranged at the position of one end of the slider (32) corresponding to the positioning protrusion (303), wherein, one end of the positioning protrusion (303) is inserted into the positioning hole (304).

4. The fixing device for industrial CT to detect electric cores according to claim 1, characterized in that: A groove (305) is arranged on the top of the tray (31), and the bottom of the slider (32) is slidably arranged in the groove (305) along the first preset direction.

5. The fixing device for industrial CT to detect battery cells according to claim 4, wherein: The test bench (3) further comprises a track (36) and a track wheel (37), wherein, two tracks (36) are fixedly arranged at the bottom of the groove (305), and the tracks (36) extend along the first preset direction; a plurality of track wheels (37) are rotatably arranged at the bottom of the slider (32) and corresponding to the tracks (36), and the plurality of track wheels (37) are rollingly arranged on the corresponding tracks (36).

6. The fixing device for industrial CT to detect electric cores according to claim 5, characterized in that: An installation groove (306) is arranged at the bottom of the slider (32) and corresponding to the position of the track wheel (37), wherein, the track wheel (37) is rotatably arranged in the corresponding installation groove (306).

7. The fixing device for industrial CT inspection of battery cells according to claim 6, characterized in that: A through hole (307) is vertically and penetratingly provided on the bottom of the groove (305), and the through hole (307) is located between the two tracks (36).

8. The fixing device for industrial CT to detect battery cells according to claim 2, characterized in that: The fastening assembly (33) includes a support (331) and a bolt (332), wherein the support (331) is fixedly arranged on the top of the tray (31); the bolt (332) penetrates through the support (331) along the axial direction of the fixed pin (34) and is screwed, and the axis line of the bolt (332) intersects the midpoint of the virtual connection line of the two sliders (32).

9. The fixing device for industrial CT to detect battery cells according to claim 8, characterized in that: A rectangular limiting protrusion (308) is fixedly arranged on one side of the inclined surface (301), wherein the battery cell (5) is clamped between the limiting protrusion (308) and the bolt (332).

10. The fixing device for industrial CT to detect electric cores according to claim 1, characterized in that: It further includes a support column (4), wherein the support column (4) is vertically arranged; There are two test benches (3) arranged up and down, and the upper end of the support column (4) is fixedly connected to the bottom of the upper test bench (3); A jack (309) is arranged on the top of the lower test bench (3), and the lower end of the support column (4) is inserted into the jack (309).

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