Laminated cell jig tool

Abstract

The utility model belongs to the technical field of jig tools, and discloses a laminated battery cell jig tool which comprises a placing table assembly, a pressing plate, a tab limiting piece and a tidying assembly. The placing table assembly comprises a supporting plate, and a pressing plate is arranged on the battery cell in a pressing mode. The electrode lug limiting piece is fixed on the supporting plate, and when the battery cell is placed on the supporting plate from the position over the supporting plate, the electrode lug limiting piece can abut against the face, close to the supporting plate, of the electrode lug and eject the electrode lug upwards and bend the electrode lug towards the side face close to the battery cell, so that the electrode lug is clamped between the electrode lug limiting piece and the battery cell. The normalizing assembly comprises a rolling part and a sliding part, the rolling part is located on the side, away from the battery cell, of the bent electrode lug, the rolling part is connected with the sliding part, the sliding part is installed on the pressing plate in a sliding mode, and the sliding part can drive the rolling part to move in the first direction, so that the rolling part elastically abuts against the electrode lug and is bent towards the upper surface of the battery cell; and the rolling piece is used for flattening the tabs on the upper surface of the battery cell. The laminated cell jig tool can prevent the tab from interfering with the image, and the cell detection structure is accurate.

Description

Technical Field

[0001] This utility model relates to the field of fixture and tooling technology, and in particular to a fixture and tooling for stacked battery cells. Background Technology

[0002] X-ray inspection of battery cells is a commonly used testing method to ensure the safety and stability of battery cells. It can quickly detect internal defects in the battery cell, allowing for timely repair, replacement, and upgrades to ensure the safety and stability of the battery cell.

[0003] Typically, stacked battery cells need to be fixed in a cell fixture for X-ray inspection. During X-ray inspection, the fixture rotates the cell to a specific angle. However, if the tabs are too close to the inspection angle, they will interfere with the image during imaging, affecting the inspection results. However, existing cell fixtures cannot ensure that the tabs avoid the X-ray path. Therefore, there is an urgent need to propose a stacked battery cell fixture to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a jig for stacked battery cells, which can prevent the tabs from being irradiated by X-rays, avoid the tabs interfering with the image, and ensure accurate battery cell detection.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The jig and fixture for stacked battery cells includes:

[0007] A placement platform assembly, the placement platform assembly including a tray for placing a battery cell to be tested;

[0008] A pressure plate, which is pressed onto the battery cell;

[0009] A tab limiting member is fixed to the tray. When the battery cell is placed on the tray from directly above the tray, the tab limiting member can abut against the side of the tab near the tray and push the tab upward and bend it towards the side near the battery cell, so that the tab is sandwiched between the tab limiting member and the battery cell.

[0010] The straightening assembly includes a rolling element and a sliding element. The rolling element is located on the side of the bent electrode tab away from the battery cell. The rolling element is connected to the sliding element, which is slidably mounted on the pressure plate. The sliding element can drive the rolling element to move along a first direction, so that the rolling element elastically presses against the electrode tab and bends it close to the upper surface of the battery cell. The rolling element flattens the electrode tab on the upper surface of the battery cell.

[0011] As an optional technical solution for the jig tooling of stacked battery cells, the placement platform assembly also includes a limiting member, which is fixed to the tray and its position on the tray is adjustable, thereby limiting the displacement of battery cells of different sizes on the tray.

[0012] As an optional technical solution for a stacked battery cell fixture, the limiting component includes two sets of first limiting blocks. The two sets of first limiting blocks are arranged opposite each other along a second direction. The battery cell is placed on the first limiting block, so that the bottom wall and side wall of the battery cell abut against the first limiting block on the corresponding side. The second direction is perpendicular to the first direction.

[0013] As an optional technical solution for the jig tooling of stacked battery cells, the limiting component further includes a second limiting block, which is located at the end of the battery cell away from the tab along the first direction, and the bottom wall and side wall of the battery cell respectively abut against the second limiting block.

[0014] As an optional technical solution for the jig tooling of stacked battery cells, the limiting member further includes a third limiting block, which is arranged opposite to the second limiting block along the first direction. The battery cell is placed on the third limiting block, and the tab limiting member is fixed to the third limiting block.

[0015] As an optional technical solution for the jig tooling of stacked battery cells, the pallet is provided with a slide rail along the first direction, and the sliding member slides along the slide rail.

[0016] As an optional technical solution for the jig tooling of stacked battery cells, the straightening component also includes a locking member, which locks the sliding member to a fixed position on the tray.

[0017] As an optional technical solution for the jig tooling of stacked battery cells, the locking component includes a locking block and a fastener. The support plate is provided with a plurality of locking holes spaced apart along the first direction. The locking holes are located on one side of the slide rail. The fastener passes through the locking block and the corresponding locking hole in sequence to lock the locking block and the pressure plate. One end of the sliding component along the first direction abuts against the side wall of the locking block.

[0018] As an optional technical solution for the jig tooling of stacked battery cells, the rolling component includes a connecting rod and a roller. One end of the connecting rod is connected to the roller, and the other end is connected to the sliding component. The roller rolls the electrode tab.

[0019] As an optional technical solution for the jig tooling of stacked battery cells, the rolling component also includes a spring, which is sleeved on the connecting rod and abuts against the sliding component, and the connecting rod is slidably connected to the sliding component.

[0020] The beneficial effects of this utility model are:

[0021] This invention provides a stacked battery cell fixture for fixing batteries to be inspected by X-rays. It includes a placement stage assembly, a pressure plate, a tab limiting component, and a straightening assembly. The placement stage assembly includes a tray for placing the battery cell to be inspected. The pressure plate presses down on the battery cell, flattening any loose cells and facilitating the algorithm's point-grabbing. The tab limiting component is fixed to the tray. When the battery cell is placed on the tray from directly above, the tab limiting component abuts against the tab near the tray, lifting the tab upwards and bending it towards the side of the battery cell. This clamps the tab between the tab limiting component and the battery cell, straightening the tab during the first bending and preventing it from interfering with the image; it also limits and fixes the tab. The straightening assembly includes a rolling element and a sliding element. The rolling element is located on the side of the bent tab facing away from the battery cell. The rolling element is connected to the sliding element, which is slidably mounted on the pressure plate. The sliding element can drive the rolling element to move in a first direction, causing the rolling element to elastically press against the tab and bend it closer to the upper surface of the battery cell. The rolling element flattens the tab against the upper surface of the battery cell. The straightening assembly straightens the tab a second time, further preventing the tab from interfering with the image. The rolling element elastically presses against the tab to avoid damaging it.

[0022] Therefore, this stacked cell fixture can straighten the tabs without damaging them, thus avoiding the X-ray irradiation path and preventing them from interfering with the image, thereby ensuring accurate cell detection. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the stacked battery cell fixture provided in this embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the stacked battery cell fixture provided in this embodiment of the utility model, without showing the structure of the regularized components;

[0025] Figure 3 This is an assembly drawing of the placement components, tab limiting components, and guide rods of the stacked battery cell fixture provided in this embodiment of the utility model.

[0026] In the picture:

[0027] 10. Battery cell; 11. Electrode tab;

[0028] 100. Placement platform assembly; 110. Tray; 120. Limiting component; 121. First limiting block; 122. Second limiting block; 123. Third limiting block; 124. Support block; 130. Base plate; 140. Clamping plate; 200. Pressure plate; 300. Pole tab limiting component; 400. Regularizing assembly; 410. Rolling component; 411. Connecting rod; 412. Roller; 413. Spring; 420. Sliding component; 430. Locking component; 431. Fastener; 432. Locking block; 500. Guide rod. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] The stacked cell fixture provided in this embodiment can prevent the tabs from being irradiated by X-rays, avoid the tabs interfering with the image, and ensure accurate cell detection structure.

[0034] Specifically, such as Figure 1 , and 2 and Figure 3As shown, this stacked battery cell fixture is used to fix the battery cell 10 to be inspected by X-rays. It includes a placement stage assembly 100, a pressure plate 200, a tab limiting member 300, and a straightening assembly 400. The placement stage assembly 100 includes a support plate 110 for placing the battery cell 10 to be inspected. The pressure plate 200 presses down on the battery cell 10, flattening the loose battery cell 10 to facilitate the algorithm's point-grabbing. The tab limiting member 300 is fixed on the tray 110. When the battery cell 10 is placed on the tray 110 from directly above the tray 110, the tab limiting member 300 can abut against the side of the tab 11 near the tray 110, and push the tab 11 upward and bend it towards the side near the battery cell 10, so that the tab 11 is sandwiched between the tab limiting member 300 and the battery cell 10. The first bend of the tab 11 is neat and avoids the tab 11 from interfering with the image; and it can limit and fix the tab 11. The straightening assembly 400 includes a rolling element 410 and a sliding element 420. The rolling element 410 is located on the side of the bent tab 11 away from the cell 10. The rolling element 410 is connected to the sliding element 420, which is slidably mounted on the pressure plate 200. The sliding element 420 can drive the rolling element 410 to move along a first direction, causing the rolling element 410 to elastically press against the tab 11 and bend it towards the upper surface of the cell 10. The rolling element 410 flattens the tab 11 on the upper surface of the cell 10. The straightening assembly 400 performs a second bending straightening of the tab 11, further preventing the tab 11 from interfering with the image. The rolling element 410 elastically presses against the tab 11, preventing damage to the tab 11.

[0035] Therefore, the stacked cell fixture can straighten the tabs 11 without damaging them, so as to avoid the X-ray irradiation path and thus avoid interference with the image, making the cell 10 detection structure accurate.

[0036] The first direction is direction A in the diagram.

[0037] Furthermore, the placement stage assembly 100 also includes a limiting member 120, which is fixed to the tray 110 and its position on the tray 110 is adjustable, thus limiting the displacement of battery cells 10 of different sizes on the tray 110. The limiting member 120 restricts and fixes the battery cells 10, increasing the positional stability of the battery cells 10 during testing, improving the testing effect and the accuracy of the test results. The adjustable position of the limiting member 120 on the tray 110 increases the versatility of the placement stage assembly 100, improves testing efficiency, and reduces costs.

[0038] Optionally, the limiting member 120 includes two sets of first limiting blocks 121, which are arranged opposite each other along a second direction. The battery cell 10 is placed on the first limiting block 121, so that the bottom wall and side wall of the battery cell 10 abut against the corresponding first limiting block 121, thus limiting the displacement of the battery cell 10 along the second direction. Furthermore, the first limiting block 121 can support the battery cell 10 and isolate it from the tray 110, preventing the battery cell 10 from being directly placed on the tray 110 for position adjustment, thus avoiding large-area contact and friction damage to the surface of the battery cell 10 with the tray 110.

[0039] The second direction is perpendicular to the first direction, and the second direction is direction B in the figure.

[0040] Furthermore, continue as Figure 3 As shown, the tray 110 has two first oblong grooves extending along a first direction, and the first limiting block 121 has a second oblong groove extending along a second direction. Bolts pass through the first and second oblong grooves to connect the tray 110 and the first limiting block 121. The first oblong grooves allow adjustment of the position of the first limiting block 121 on the tray 110 along the first direction, making the placement platform assembly 100 suitable for battery cells 10 of different sizes along the first direction. The second oblong grooves allow adjustment of the position of the first limiting block 121 on the tray 110 along the second direction, making the placement platform assembly 100 suitable for battery cells 10 of different sizes along the second direction.

[0041] In this embodiment, there are two first limiting blocks 121 in each group of first limiting blocks 121, and the two first limiting blocks 121 are arranged at intervals to increase the uniformity of the fixing force on the battery cell 10.

[0042] Optionally, the limiting member 120 further includes a second limiting block 122, which is located at the end of the battery cell 10 away from the tab 11 along the first direction. The bottom wall and side wall of the battery cell 10 respectively abut against the second limiting block 122, limiting the displacement of the battery cell 10 along the first direction away from the tab 11. Similarly, the second limiting block 122 can support the battery cell 10 and isolate it from the tray 110, preventing the battery cell 10 from being damaged by friction due to large-area contact with the tray 110 when the battery cell 10 is directly placed on the tray 110 for position adjustment.

[0043] Furthermore, the tray 110 is provided with a third oblong groove extending along the second direction, and the second limiting block 122 is provided with a fourth oblong groove extending along the first direction. Bolts pass through the third oblong groove and the fourth oblong groove to connect the tray 110 and the second limiting block 122. The third oblong groove allows adjustment of the position of the second limiting block 122 on the tray 110 along the second direction, making the placement platform assembly 100 suitable for battery cells 10 of different sizes along the second direction. The fourth oblong groove allows adjustment of the position of the second limiting block 122 on the tray 110 along the first direction, making the placement platform assembly 100 suitable for battery cells 10 of different sizes along the first direction.

[0044] Optionally, the limiting member 120 further includes a third limiting block 123, which is disposed opposite to the second limiting block 122 along a first direction. The battery cell 10 is placed on the third limiting block 123, and the tab limiting member 300 is fixed to the third limiting block 123. The third limiting block 123 can support the battery cell 10 and isolate it from the tray 110, preventing the battery cell 10 from being directly placed on the tray 110 and causing large-area contact and friction damage to the surface of the battery cell 10 when adjusting its position. The tab limiting member 300 is fixed to the third limiting block 123, saving the height dimension of the tab limiting member 300 and saving space.

[0045] It should be noted that since the tab limiting member 300 can satisfy the requirement to limit the displacement of the battery cell 10 in the first direction toward the tab 11, the third limiting member 120 is not required to limit the displacement of the battery cell 10 in the first direction.

[0046] Furthermore, the tray 110 is also provided with a fifth oblong groove extending along the second direction, which is arranged opposite to the third oblong groove along the first direction. The third limiting block 123 is provided with a sixth oblong groove extending along the first direction. Bolts pass through the fifth and sixth oblong grooves to connect the tray 110 and the third limiting block 123. The fifth oblong groove allows adjustment of the position of the third limiting block 123 on the tray 110 along the second direction, making the placement platform assembly 100 suitable for battery cells 10 of different sizes along the second direction. The sixth oblong groove allows adjustment of the position of the third limiting block 123 on the tray 110 along the first direction, making the placement platform assembly 100 suitable for battery cells 10 of different sizes along the first direction.

[0047] It should be noted that in this embodiment, there are two electrode tabs 11, which are spaced apart along the second direction. Therefore, there are two third limiting blocks 123 and two electrode tab limiting members 300.

[0048] Furthermore, in order to increase support for the middle position of the battery cell 10, the limiting member 120 also includes a support block 124, which is fixed on the support plate 110 and located at the bottom middle position of the battery cell 10, that is, in the space enclosed by the first limiting block 121, the second limiting block 122 and the third limiting block 123.

[0049] Continue as Figure 1 As shown, a slide rail is provided on the tray 110 along the first direction, and the slider 420 slides along the slide rail. The slide rail is simple to set, making the sliding operation of the slider 420 simple.

[0050] Furthermore, in order to position the slider 420 at its stop position and lock the slider 420, the straightening assembly 400 also includes a locking member 430, which locks the slider 420 to a fixed position on the tray 110.

[0051] The specific locking method is as follows: the locking component 430 includes a locking block 432 and a fastener 431. The support plate 110 is provided with a plurality of locking holes at intervals along the first direction. The locking holes are located on one side of the slide rail. The fastener 431 passes through the locking block 432 and the corresponding locking hole in sequence to lock the locking block 432 and the pressure plate 200. One end of the sliding component 420 along the first direction abuts against the side wall of the locking block 432.

[0052] Furthermore, the aligning assembly 400 also includes a pad that is detachably connected to the pressure plate 200 and whose position on the pressure plate 200 is adjustable. The slide rail, locking block 432, fastener 431, and locking hole are all located on the pad, which facilitates adjusting the position of the slide rail and sliding member 420 according to the size of the battery cell 10, thereby increasing the versatility of the aligning assembly 400.

[0053] It should be noted that, in this embodiment, there are two tabs 11 and two sets of straightening components 400, so the number of slide rails and pads are both two.

[0054] Continue as Figure 1 As shown, the rolling element 410 includes a connecting rod 411 and a roller 412. One end of the connecting rod 411 is connected to the roller 412, and the other end is connected to the sliding element 420. The roller 412 rolls the electrode tab 11.

[0055] In this embodiment, roller 412 is a polyurethane pressure roller to avoid damaging the electrode tab 11.

[0056] Furthermore, the rolling element 410 also includes a spring 413, which is sleeved on the connecting rod 411 and abuts against the sliding element 420. The connecting rod 411 is slidably connected to the sliding element 420. Through the compression force of the spring 413, the roller 412 elastically rolls against the tab 11, avoiding fixed pressure rolling on the battery cell 10 and damaging the battery cell 10.

[0057] In this embodiment, the rolling element 410 also includes a nut, and the connecting rod 411 is slidably connected to the sliding element 420 by passing through the nut in sequence. When the roller 412 is not rolling the tab 11, the connecting rod 411 and the roller 412 can be hung on the upper surface of the sliding element 420 under their own weight without slipping out of the sliding element 420. At the same time, adjusting the position of the nut on the connecting rod 411 can adjust the compression force of the spring 413 to suit different rolling pressure requirements.

[0058] It should be noted that when installing the pressure plate 200, the rolling element 410 should first be moved away from the tab 11 to prevent the roller 412 from touching the tab 11. After the pressure plate 200 is installed, the rolling element 410 can be pulled back using the sliding element 420.

[0059] Continue as Figure 1 and Figure 2 As shown, the pressure plate 200 has a first groove at one end of the edge near the tab 11 along the first direction. The first groove is directly opposite the tab 11, so that the tab 11 can be folded into the first groove and attached to the upper surface of the cell 10.

[0060] In this embodiment, the placement platform assembly 100 also includes a base plate 130 and a clamping plate 140. The base plate 130 is located below the support plate 110 and supports and fixes the support plate 110. The clamping plate 140 is clamped between the base plate 130 and the support plate 110 and strengthens the connection between the base plate 130 and the support plate 110.

[0061] Furthermore, the stacked battery cell fixture also includes several guide rods 500, which are vertically mounted on the clamping plate 140 and have connecting pressure plates 200 passing through them. The pressure plates 200 can be slidably mounted and dismounted along the guide rods 500.

[0062] In this embodiment, there are four guide rods 500, which are divided into two groups. The two groups of guide rods 500 are arranged opposite each other along the second direction. The two guide rods 500 in each group are spaced apart along the first direction.

[0063] Optionally, the pallet 110 and the clamping plate 140 are provided with second grooves at both ends along the second direction, and the guide rod 500 passes through the second groove and is fixed to the base plate 130.

[0064] It should also be noted that the electrode tab limiting member 300 has a third groove on its upper edge. The third groove is directly opposite to the roller 412 along the first direction. The roller 412 can roll the electrode tab 11 through the third groove.

[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A jig for stacked battery cells, characterized in that, include: A placement platform assembly (100) includes a tray (110) for placing a battery cell (10) to be tested; A pressure plate (200) is pressed onto the battery cell (10); A tab limiting member (300) is fixed on the tray (110). When the battery cell (10) is placed on the tray (110) from directly above it, the tab limiting member (300) can abut against the side of the tab (11) near the tray (110), and push the tab (11) upward and bend it toward the side near the battery cell (10), so that the tab (11) is sandwiched between the tab limiting member (300) and the battery cell (10). A straightening assembly (400) includes a rolling element (410) and a sliding element (420). The rolling element (410) is located on the side of the bent tab (11) away from the cell (10). The rolling element (410) is connected to the sliding element (420). The sliding element (420) is slidably mounted on the pressure plate (200). The sliding element (420) can drive the rolling element (410) to move along a first direction, so that the rolling element (410) elastically presses against the tab (11) and bends towards the upper surface of the cell (10). The rolling element (410) flattens the tab (11) on the upper surface of the cell (10).

2. The jig and fixture for stacked battery cells according to claim 1, characterized in that, The placement platform assembly (100) also includes a limiting member (120), which is fixed to the tray (110) and the position of the limiting member (120) on the tray (110) is adjustable, thereby limiting the displacement of the battery cells (10) of different sizes on the tray (110).

3. The jig and fixture for stacked battery cells according to claim 2, characterized in that, The limiting member (120) includes two sets of first limiting blocks (121), which are arranged opposite to each other along a second direction. The battery cell (10) is placed on the first limiting block (121) so that the bottom wall and side wall of the battery cell (10) abut against the first limiting block (121) on the corresponding side. The second direction is perpendicular to the first direction.

4. The jig and fixture for stacked battery cells according to claim 2, characterized in that, The limiting member (120) further includes a second limiting block (122), which is located at the end of the battery cell (10) away from the tab (11) along the first direction, and the bottom wall and side wall of the battery cell (10) respectively abut against the second limiting block (122).

5. The jig and fixture for stacked battery cells according to claim 4, characterized in that, The limiting member (120) further includes a third limiting block (123), the third limiting block (123) and the second limiting block (122) are arranged opposite to each other along the first direction, the battery cell (10) is placed on the third limiting block (123), and the tab limiting member (300) is fixed to the third limiting block (123).

6. The jig and fixture for stacked battery cells according to claim 1, characterized in that, The tray (110) is provided with a slide rail along the first direction, and the sliding member (420) slides along the slide rail.

7. The jig and fixture for stacked battery cells according to claim 6, characterized in that, The alignment component (400) further includes a locking member (430) that locks the sliding member (420) to a fixed position on the tray (110).

8. The jig and fixture for stacked battery cells according to claim 7, characterized in that, The locking member (430) includes a locking block (432) and a fastener (431). The support plate (110) is provided with a plurality of locking holes spaced apart along the first direction. The locking holes are located on one side of the slide rail. The fastener (431) passes through the locking block (432) and the corresponding locking hole in sequence to lock the locking block (432) and the pressure plate (200). One end of the sliding member (420) along the first direction abuts against the side wall of the locking block (432).

9. The jig and fixture for stacked battery cells according to claim 1, characterized in that, The rolling element (410) includes a connecting rod (411) and a roller (412). One end of the connecting rod (411) is connected to the roller (412), and the other end is connected to the sliding element (420). The roller (412) rolls the tab (11).

10. The jig and fixture for stacked battery cells according to claim 9, characterized in that, The rolling element (410) also includes a spring (413), which is sleeved on the connecting rod (411) and abuts against the sliding element (420). The connecting rod (411) is slidably connected to the sliding element (420).

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