CN220064320U - Battery cell short circuit test equipment - Google Patents

Abstract

The utility model discloses a battery cell short circuit test device, which comprises a positioning and mounting device and a pressing test device, wherein the pressing test device is arranged above the positioning and mounting device in a lifting manner; the positioning and mounting device comprises a supporting plate, a positioning stop block and a tab support cushion block, wherein the tab support cushion block is arranged on one side of the supporting plate, and the positioning stop block is arranged on the other three sides except one side where the tab support cushion block is arranged in the supporting plate. The utility model is used for the battery cell short circuit test, thereby ensuring the normal use and the safety of the lithium battery cell during the use.

Description

Battery cell short circuit test equipment

Technical Field

The utility model relates to the technical field of lithium battery production and processing equipment, in particular to battery cell short circuit test equipment.

Background

With advances in science and technology and improvements in living standards, lithium batteries have been widely used in various aspects of life. However, in the process of producing the lithium battery, substances such as polar powder and dust may be mixed in the battery core of the lithium battery due to the production process and the like, and these substances may puncture the separator between the positive electrode and the negative electrode, which eventually leads to the short circuit of the battery, and when the short-circuited lithium battery is used, the explosion of the battery and even burning of instruments may be caused, so that serious potential safety hazards exist. In order to ensure normal use and safety during use of the lithium battery cell, the lithium battery cell must be subjected to a short circuit test. In the process of carrying out short circuit test on the lithium battery, most of the existing test modes are modes of wiring test by workers manually, the test modes are more troublesome to operate and lower in test efficiency, and the test results are greatly influenced by human factors and are poor in test reliability. In order to facilitate short circuit test of lithium battery cells and improve test efficiency, some short circuit test equipment for testing the lithium battery cells also appears, but the short circuit test equipment for testing the lithium battery cells can not position the cells and can not support the lugs of the cells, so that the cells are easy to move during short circuit test of the test equipment to cause inaccurate test results, and the problem that the lugs of the cells are not supported to cause press deformation or even press breakage during the test of the lugs of the cells also exists. For example, in the lithium ion battery cell short-circuit testing device of the patent document "202120728866. X", the battery cell short-circuit testing device cannot locate the battery cell, and cannot support the tab of the battery cell, and there are problems that the battery cell is easy to move during the battery cell short-circuit test, resulting in inaccurate testing results, and that the tab is not supported by the battery cell, resulting in being deformed or even broken during the tab test.

Disclosure of Invention

The utility model provides a battery cell short-circuit test device which solves the technical problems that a battery cell short-circuit test device of a lithium ion battery in the prior art cannot position a battery cell and cannot support a tab of the battery cell, and the battery cell is easy to move during the battery cell short-circuit test to cause inaccurate test results, and the battery cell tab is not supported to cause the tab to be deformed or even broken during the battery cell short-circuit test.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the battery cell short circuit test equipment comprises a positioning and mounting device and a pressing test device, wherein the pressing test device is arranged above the positioning and mounting device in a lifting manner; the positioning and mounting device comprises a supporting plate, a positioning stop block and a tab support cushion block, wherein the tab support cushion block is arranged on one side of the supporting plate, and the positioning stop block is arranged on the other three sides except one side where the tab support cushion block is arranged in the supporting plate.

Further, the position of the tab support cushion block is adjustable and arranged on the support plate.

Further, two pole ear support cushion blocks are arranged, and the two pole ear support cushion blocks are separately arranged on the support plate.

Further, the positioning stop block is arranged on the supporting plate in a position-adjustable mode.

Further, push down testing arrangement includes mounting bracket, lift driving piece, test clamp plate and test probe, lift driving piece sets up on the mounting bracket, the test clamp plate sets up the lift expansion end at lift driving piece, the test probe sets up at test clamp plate downside, lift driving piece drive test clamp plate lift removal on the mounting bracket.

Further, be provided with vertical slide rail on the mounting bracket, be provided with the spout on the test clamp plate, the spout slides and sets up on vertical slide rail, the test clamp plate passes through vertical slide rail and spout lift slip setting on the mounting bracket.

Further, the vertical sliding rails are arranged on two opposite sides of the mounting frame, and two groups of vertical sliding rails are arranged on each side of the mounting frame.

Further, the pressing test device further comprises a pressure sensor, and the pressure sensor is arranged between the lifting movable end of the lifting driving piece and the test pressing plate.

Further, the device also comprises a transfer device, wherein the transfer device is arranged below the pressing test device, the positioning and mounting device is arranged on the transfer device, and the transfer device transfers the positioning and mounting device from outside the pressing test device to below the pressing test device.

Further, the transfer device comprises a linear conveying mechanism and a supporting frame, wherein the supporting frame is arranged at the movable end of the linear conveying mechanism, and the supporting plate is arranged on the supporting frame.

The beneficial effects achieved by the utility model mainly comprise the following points: the battery cell short circuit test equipment comprises a positioning and mounting device, and the battery cell to be tested is positioned through the positioning and mounting device during the battery cell short circuit test, so that the movement during the battery cell short circuit test to be tested is avoided, and the accuracy of the battery cell short circuit test equipment to the battery cell short circuit test is ensured. In addition, the lifting of the pressing-down testing device is arranged above the positioning and mounting device, the pressing-down testing device is pressed down for short circuit testing during short circuit testing of the battery cell, meanwhile, the battery cell is pressed and fixed on the positioning and mounting device, movement of the battery cell to be tested during short circuit testing is further avoided, and therefore accuracy of the battery cell short circuit testing equipment for short circuit testing of the battery cell is further guaranteed. The positioning and mounting device comprises a pole ear supporting cushion block, when a battery cell to be tested is placed on the positioning and mounting device, the pole ear of the battery cell is supported on the pole ear supporting cushion block, and therefore the pole ear can be supported by the pole ear supporting cushion block when the short circuit test is performed by pressing down the testing device, the pole ear is prevented from being deformed or even broken by pressing, the damage to the pole ear of the battery cell during the short circuit test of the battery cell is avoided, and the qualified battery cell after the short circuit test of the battery cell is ensured to be normally used.

Drawings

FIG. 1 is a schematic diagram of the overall three-dimensional structure of a cell short-circuit test device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a longitudinal cross-sectional structure of a device for testing a short circuit of a battery cell according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of an explosion structure of a positioning and mounting device and a transfer device of a cell short-circuit test apparatus according to an embodiment of the present utility model;

fig. 4 is a schematic perspective view of a positioning and mounting device of a short circuit test device for a battery cell according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of an explosion structure of a device for testing the depression of a short circuit test device of a battery cell according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a battery cell tested by the battery cell short circuit test apparatus according to an embodiment of the present utility model.

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar components; the terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limiting the present patent.

Detailed Description

The present utility model will be described in further detail below with reference to the drawings and examples for the understanding of those skilled in the art.

Example 1

Referring to fig. 1 to 6, a battery cell short circuit test device is used for a battery cell short circuit test, so as to ensure normal use and safety during use of a lithium battery cell. The battery cell short circuit test equipment comprises a positioning and mounting device 1 and a pressing-down test device 2, wherein the pressing-down test device 2 is arranged above the positioning and mounting device 1 in a lifting manner, so that a battery cell 4 to be subjected to short circuit test can be positioned and mounted on the positioning and mounting device 1, and the pressing-down test device 2 is used for pressing down the battery cell 4 to be subjected to short circuit test on the positioning and mounting device 1 to perform short circuit test. The pressing-down testing device 2 is arranged above the positioning and mounting device 1 in a lifting manner, the pressing-down testing device 2 can be lifted up before testing, the battery cell 4 to be short-circuited tested is conveniently placed on the positioning and mounting device 1, the pressing-down testing device 2 is lowered down for testing the battery cell 4 to be short-circuited tested on the positioning and mounting device 1, the pressing-down testing device 2 can be lifted up again after testing is completed, and then the battery cell 4 after short-circuited testing is completed is taken out. From this through pushing down testing arrangement 2 lift setting in location installation device 1 top, make things convenient for the electric core 4 that waits to test to put into location installation device 1 and test to conveniently take out the electric core 4 that the test was accomplished from location installation device 1 after the test is accomplished. The battery cell short circuit test equipment comprises a positioning and mounting device 1, and the battery cell 4 to be tested is positioned through the positioning and mounting device 1 during the battery cell short circuit test, so that the movement of the battery cell 4 to be tested during the short circuit test is avoided, and the accuracy of the battery cell short circuit test equipment to the battery cell 4 short circuit test is ensured. In addition, the lifting of the pressing test device 2 is arranged above the positioning and mounting device 1, the pressing test device 2 presses down to perform short circuit test when the battery cell 4 is in short circuit test, and meanwhile, the battery cell 4 is pressed and fixed on the positioning and mounting device 1, so that movement of the battery cell 4 to be tested in short circuit test is further avoided, and the accuracy of the battery cell short circuit test equipment on the battery cell 4 is further ensured.

Referring to fig. 1 to 6, the positioning and mounting device 1 includes a support plate 11, a positioning block 12 and a tab support pad 13. The electrode tab supporting cushion block 13 is arranged on one side of the supporting plate 11, when the battery cell 4 to be tested is placed on the positioning and mounting device 1, the electrode tab 41 of the battery cell 4 is supported on the electrode tab supporting cushion block 13, so that the electrode tab 41 can be supported through the electrode tab supporting cushion block 13 when the electrode tab 41 is pressed down by the pressing test device 2 for short-circuit test, the electrode tab 41 is prevented from being deformed or even broken by pressing, the battery cell electrode tab is prevented from being damaged during the battery cell short-circuit test, and the battery cell qualified in test after the battery cell short-circuit test can be normally used. The positioning stop block 12 is arranged on the rest three sides of one side of the support plate 11 except for the tab support cushion 13, and when the battery cell 4 to be tested is placed on the positioning installation device 1, the battery cell 4 to be tested can be positioned and fixed on the support plate 11 from the outer side through the positioning stop block 12, so that the stability of the battery cell 4 to be tested in the short circuit test is ensured. The supporting plate 11 and the tab supporting cushion 13 are made of non-conductive nonmetallic materials, so that the situation that the accuracy of the short circuit test of the battery cells is affected due to the fact that the supporting plate 11 and the positioning stop block 12 conduct the two tabs 41 of the battery cells 4 is avoided. The positioning block 12 is also preferably made of non-metal materials, so that the contact between a hard metal structure and the surface of the battery cell 4 is avoided to damage the surface of the battery cell.

Referring to fig. 4, in order to adapt to the short circuit test of the battery cells 4 with different shapes, the tab support pad 13 is preferably arranged on the support plate 11 in an adjustable position, so that the position of the tab support pad 13 on the support plate 11 can be adjusted according to the position of the tab 41 on the battery cells 4, and the tab support pad 13 can adapt to the position of the tab 41 of the battery cells 4 when the positions of the tab 41 of the battery cells 4 to be tested are different. Multiple groups of screw holes can be formed in the supporting plate 11, the lug support cushion blocks 13 are screwed on the supporting plate 11 through screws, and when the positions of the lug support cushion blocks 13 on the supporting plate 11 need to be adjusted, the lug support cushion blocks 13 are screwed in the screw holes in different positions of the supporting plate 11 through screws.

Referring to fig. 4, two tab support pads 13 are preferably provided, two tab support pads 13 are separately provided on the support plate 11, one tab 41 is supported by the two tab support pads 13 during the short circuit test of the battery cell, and the positions of the two tab support pads 13 can be adjusted respectively during the adjustment of the positions of the tab support pads 13 on the support plate 11, so that the adjustment of the positions of the tab support pads 13 on the support plate 11 is more flexible, and the short circuit test of different battery cells 4 at the positions of the tab 41 can be better adapted.

Referring to fig. 4, in order to adapt to the battery cells 4 with different sizes for short-circuit test, the best position of the positioning stop block 12 is adjustable on the supporting plate 11, so that when the battery cells 4 with different sizes are switched for short-circuit test, the position of the positioning stop block 12 can be adjusted, and the battery cells 4 with different sizes can be subjected to short-circuit test by the battery cell short-circuit test equipment of the embodiment. The positioning stop block 12 can be screwed on the supporting plate 11 through a screw, a long hole is formed in the positioning stop block 12, and the screw is inserted into the long hole when the positioning stop block 12 is fixed through a screw, so that the position of the positioning stop block 12 on the supporting plate 11 can be adjusted through the long hole, and the positioning of the battery cells 4 with different sizes can be adapted.

Referring to fig. 1 to 6, when the cell short circuit test device of the present embodiment is used for performing a cell short circuit test, the pressing test device 2 is lifted, so that the cell 4 to be short-circuited is put into the positioning and mounting device 1, and when the cell 4 is put into the positioning and mounting device 1, the main body is positioned and fixed at the inner side of the positioning stop block 12 on the support plate 11, and the tab 41 is supported on the tab support cushion 13; then the test device 2 is pressed down to test the battery cell 4 to be short-circuited on the positioning and mounting device 1; after the test is completed, the pressing test device 2 is lifted again, so that the battery cell 4 with the short circuit test completed is taken out.

Example two

Referring to fig. 1 to 6, the overall structure of the cell short-circuit testing apparatus in this embodiment is the same as that of the first embodiment, and the structure of the push-down testing device 2 is optimized and improved based on the first embodiment, and the point of the embodiment is the same as that of the first embodiment, and the improvement will be further described.

Referring to fig. 1, 2 and 5, the pressing test device 2 includes a mounting frame 21, a lifting driving member 22, a test pressing plate 23 and a test probe 24, the mounting frame 21 is a door-shaped structure formed by connecting two opposite side plates and a top plate together, the lifting driving member 22 is arranged at the top of the mounting frame 21 of the door-shaped structure, the test pressing plate 23 is arranged at the lifting movable end of the lifting driving member 22, the test probe 24 is arranged at the lower side of the test pressing plate 23, and therefore the test pressing plate 23 can be driven to move up and down on the mounting frame 21 by the lifting driving member 22, and then the test pressing plate 23 can be driven to lift up on the mounting frame 21 by the lifting driving member 22 to feed the battery cell 4 to the positioning mounting device 1 or take the battery cell 4 out of the positioning mounting device 1, and the test pressing plate 23 can be driven to descend on the mounting frame 21 by the lifting driving member 22 to perform the battery cell short circuit test. The lift drive 22 may employ a telescoping cylinder. The test clamp plate 23 can adopt the structure that the metal sheet downside set up the insulation board, and the flexible end of lift driving piece 22 sets up flexible connecting block 221, fixes the test clamp plate 23 on the flexible connecting block 221 on lift driving piece 22 through L shape connecting plate 222 to can be with the stable installation of test clamp plate 23 at the flexible end of lift driving piece 22, drive test clamp plate 23 through lift driving piece 22 and go up and down to remove on mounting bracket 21. The test probe 24 is disposed at the lower side of the test pressing plate 23, and the position of the test probe 24 is matched with the positions of the two lugs 41 of the battery cell 4, so that the battery cell 4 can be connected into an external circuit through the connection of the two lugs 41 of the test probe 24 to test whether the battery cell 4 is short-circuited.

Referring to fig. 1, 2 and 5, in order to promote the stability of test clamp plate 23 lift action, be provided with vertical slide rail 211 on the mounting bracket 21, be provided with spout 231 on the test clamp plate 23, spout 231 slides and sets up on vertical slide rail 211, test clamp plate 23 passes through vertical slide rail 211 and spout 231 lift slip setting on mounting bracket 21 to test clamp plate 23 can be through slide rail spout structure direction location when lifting on mounting bracket 21, make test clamp plate 23 more stable when lifting on mounting bracket 21, test probe 24 can more accurate crimping to tab 41 on, and then make the test more accurate when electric core 4 short circuit test. The chute 231 may be secured outside the test platen 23 by an L-shaped connector 232.

Referring to fig. 2 and 5, the vertical sliding rails 211 are disposed on two opposite sides of the mounting frame 21, and two groups of vertical sliding rails 211 are disposed on each side of the mounting frame 21, so that the stability of lifting the test pressing plate 23 on the mounting frame 21 is further improved.

Referring to fig. 2 and 5, in order to detect the pressure of the test platen 23 pressing against the battery cell 4, the pressing test device 2 further includes a pressure sensor 25, where the pressure sensor 25 is disposed between the lifting movable end of the lifting driving member 22 and the test platen 23, so that the pressure of the test platen 23 pressing against the battery cell 4 can be detected by the pressure sensor 25 when the lifting driving member 22 drives the test platen 23 to press against the battery cell 4.

Referring to fig. 1 to 6, when the cell short circuit test device of the present embodiment is used for performing a cell short circuit test, the lifting driving member 22 drives the test pressing plate 23 to lift from the mounting frame 21, so that the cell 4 to be short circuit tested is put into the positioning and mounting device 1, when the cell 4 is put into the positioning and mounting device 1, the main body is positioned and fixed at the inner side of the positioning stop block 12 on the support plate 11, and the tab 41 is supported on the tab support cushion 13; then the lifting driving piece 22 drives the test pressing plate 23 to descend for testing the battery cell 4 to be short-circuited on the positioning and mounting device 1, and the battery cell 4 is connected to an external circuit through the test probe 24 to test whether the battery cell 4 is short-circuited or not during short-circuited; after the test is completed, the test pressing plate 23 is driven to lift from the mounting frame 21 again by the lifting driving member 22, so that the short-circuit test completed battery cell 4 is taken out.

Example III

Referring to fig. 1 to 6, the whole structure of the electrical core short circuit test device in this embodiment is the same as that of the embodiment, and a transfer device 3 is provided on the basis of the second embodiment, the electrical core 4 to be tested is sent to the lower side of the pressing test device 2 by the transfer device 3 to perform short circuit test, and the electrical core 4 is taken out from the lower side of the pressing test device 2 after the short circuit test is completed, so that the situation that the lower side of the pressing test device 2 is narrow in space and difficult to manually feed and discharge is avoided, feeding and discharging operations during the short circuit test of the electrical core 4 are facilitated, and the efficiency of the electrical core short circuit test is improved. The same points as the second embodiment are referred to in the second embodiment, and modifications thereof will be further described below.

Referring to fig. 1 to 3, the electrical core short circuit testing apparatus of the present embodiment further includes a transfer device 3, the transfer device 3 is disposed below the pressing test device 2, the positioning and mounting device 1 is disposed on the transfer device 3, the transfer device 3 transfers the positioning and mounting device 1 from outside the pressing test device 2 to below the pressing test device 2, and may transfer the positioning and mounting device 1 from below the pressing test device 2 to outside the pressing test device 2. Therefore, when the battery cell 4 is fed, the positioning and mounting device 1 can be transferred from the lower part of the downward-pressing testing device 2 to the outside of the downward-pressing testing device 2 through the transfer device 3, so that the battery cell 4 to be tested can be conveniently fed onto the positioning and mounting device 1; after the loading is finished, the positioning and mounting device 1 is transferred to the lower part of the pressing test device 2 from the outside of the pressing test device 2 through the transfer device 3 for short circuit test.

Referring to fig. 1 to 3, the transfer device 3 includes a linear conveying mechanism 31 and a supporting frame 32, the supporting frame 32 is disposed at a movable end of the linear conveying mechanism 31, and the supporting plate 11 is disposed on the supporting frame 32, so that the positioning and mounting device 1 can be driven by the transfer device 3 to move between the outside of the pressing test device 2 and the lower side of the pressing test device 2. The linear transport mechanism 31 may be a conventional linear transport module such as a single-axis manipulator or a screw mechanism.

Referring to fig. 1 to 6, when the cell short circuit test device of the present embodiment is used for performing a cell short circuit test, the lifting driving member 22 drives the test pressing plate 23 to lift up from the mounting frame 21, and the transfer device 3 transfers the positioning and mounting device 1 from below the pressing test device 2 to outside the pressing test device 2, so that the cell 4 to be short-circuited is placed on the positioning and mounting device 1, and after the cell 4 is completely loaded, the transfer device 3 transfers the positioning and mounting device 1 from outside the pressing test device 2 to below the pressing test device 2; when the battery cell 4 is put into the positioning and mounting device 1, the main body is positioned and fixed at the inner side of the positioning stop block 12 on the supporting plate 11, and the tab 41 is supported on the tab support cushion block 13. Then the lifting driving piece 22 drives the test pressing plate 23 to descend to test the battery cell 4 to be short-circuited on the positioning and mounting device 1; in the short circuit test, the test probe 24 is connected with the two lugs 41 to connect the battery cell 4 to an external circuit to test whether the battery cell 4 is short-circuited. After the test is finished, the test pressing plate 23 is driven to lift up from the mounting frame 21 through the lifting driving piece 22, and the positioning and mounting device 1 is transferred to the outside of the pressing test device 2 from the lower part of the pressing test device 2 through the transfer device 3, so that the battery cell 4 with the short circuit test finished is taken out.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a battery cell short circuit test equipment which characterized in that: the device comprises a positioning and mounting device (1) and a pressing-down testing device (2), wherein the pressing-down testing device (2) is arranged above the positioning and mounting device (1) in a lifting manner; the positioning and mounting device (1) comprises a supporting plate (11), a positioning stop block (12) and a lug supporting cushion block (13), wherein the lug supporting cushion block (13) is arranged on one side of the supporting plate (11), and the positioning stop block (12) is arranged on the supporting plate (11) except for the other three sides of one side where the lug supporting cushion block (13) is arranged.

2. The cell short circuit test apparatus of claim 1, wherein: the position of the lug support cushion block (13) is adjustable and arranged on the support plate (11).

3. The cell short circuit test apparatus of claim 2, wherein: the two pole ear support cushion blocks (13) are arranged, and the two pole ear support cushion blocks (13) are arranged on the support plate (11) separately.

4. A cell short circuit testing device according to claim 3, wherein: the positioning stop block (12) is arranged on the supporting plate (11) in an adjustable position.

5. The cell short circuit test apparatus according to any one of claims 1 to 4, wherein: the test device (2) pushes down includes mounting bracket (21), lift driving piece (22), test clamp plate (23) and test probe (24), lift driving piece (22) set up on mounting bracket (21), test clamp plate (23) set up the lift expansion end at lift driving piece (22), test probe (24) set up in test clamp plate (23) downside, lift driving piece (22) drive test clamp plate (23) lift removal on mounting bracket (21).

6. The cell short circuit test apparatus of claim 5, wherein: be provided with vertical slide rail (211) on mounting bracket (21), be provided with spout (231) on test clamp plate (23), spout (231) slip sets up on vertical slide rail (211), test clamp plate (23) are through vertical slide rail (211) and spout (231) lift slip setting on mounting bracket (21).

7. The cell short circuit test apparatus of claim 6, wherein: the vertical sliding rails (211) are arranged on two opposite sides of the mounting frame (21), and two groups of vertical sliding rails (211) are arranged on each side of the mounting frame (21).

8. The cell short circuit test apparatus of claim 7, wherein: the pressing-down testing device (2) further comprises a pressure sensor (25), and the pressure sensor (25) is arranged between the lifting movable end of the lifting driving piece (22) and the testing pressing plate (23).

9. The cell short circuit test apparatus of claim 8, wherein: still include transfer device (3), transfer device (3) set up in pushing down testing arrangement (2) below, location installation device (1) set up on transfer device (3), transfer device (3) are with location installation device (1) from pushing down testing arrangement (2) outside to pushing down testing arrangement (2) below.

10. The cell short circuit test apparatus of claim 9, wherein: the transfer device (3) comprises a linear conveying mechanism (31) and a supporting frame (32), wherein the supporting frame (32) is arranged at the movable end of the linear conveying mechanism (31), and the supporting plate (11) is arranged on the supporting frame (32).