Tab bending jig for small-sized soft package lithium battery module

Abstract

The utility model discloses a small soft package lithium battery module tab bending jig, which comprises an upper cover plate and a lower jig, a nesting groove for placing a battery module is arranged on the lower jig, the nesting groove comprises a mounting groove matched with the shape of the battery module, the upper cover plate is pressed and covered on the lower jig, an inclined slope is arranged at the front end of the upper cover plate, and the upper cover plate and the lower jig are arranged on the mounting groove. The lower jig is provided with a penetrating groove and an attaching groove which are located at the front end and the rear end of the mounting groove and correspond to the front end and the rear end of the upper cover plate, the tab extending end of the battery module is attached to the bottom face of the penetrating groove, one side edge, corresponding to the penetrating groove, of the lower jig is connected with a bent plate, and the bent plate is arranged in a stepped mode and comprises an upper step and a lower step; the upper step is hinged to the lower jig, the lower step is provided with a bent top block protruding out of the step face, and the bent top block can rotate to the position where the bent top block is attached to the inclined slope face of the upper cover plate. The electrode lug bending jig can be applied to electrode lug bending after product welding is completed, can reduce the working difficulty of workers, and improves the production quality and the production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to a small -size soft package lithium cell module tab bending jig belongs to lithium cell module assembly technical field. BACKGROUND

[0002] The selection of the assembly method and process will directly affect the cost, quality, safety and consistency of the battery. Among the many assembly methods, the current method has the following defects:

[0003] 1) unstable quality: the current main personnel manual bending, for personnel stability, professional knowledge requirement is higher, the quality fluctuation of different personnel after bending is bigger, and the quality risk is higher.

[0004] 2) cannot control accurately: the current bending position is mainly artificial control, and unstable bending position will directly affect the product size.

[0005] 3) low efficiency: because the bending position requirement is higher, personnel need to control the bending position accurately when bending, and when the bending position is wrong, multiple rework is needed, which seriously affects the production efficiency.

[0006] 4) comfort: the current main personnel uses fingers to bend, and when the number of continuous bending is too much, the personnel fatigue accumulates and the personnel will feel finger pain. SUMMARY

[0007] In view of the defects of the prior art, the utility model provides a small -size soft package lithium cell module tab bending jig, the tab bending jig quality is stable, can control accurately, improve efficiency, and the comfort is high.

[0008] The technical scheme of the utility model is as follows:

[0009] The utility model provides a small -size soft package lithium cell module tab bending jig, including upper cover plate and lower jig, the nest recess of placing battery module is equipped on the lower jig, the nest recess includes the installation groove that the shape of battery module is in accord with, the upper cover plate is pressed on the lower jig, the front end of upper cover plate is equipped with inclined slope, the through groove and the close groove that are located the front end and the rear end of installation groove and correspond with the front end and the rear end of upper cover plate are equipped on the lower jig, the tab protruding end of battery module is close in the bottom surface of through groove, the side of lower jig corresponding through groove is connected with the bending plate, and the bending plate is arranged in steps and includes upper step and lower step, the upper step is hinged with lower jig, and the lower step is equipped with the bending top block of protruding step surface, and the bending top block can rotate to the position close to the inclined slope of upper cover plate.

[0010] Further, the lower jig is connected with the upper step of the bending plate through the connecting hinge piece.

[0011] Further, the lower jig is provided with a connecting hinge piece placement groove, and the placement groove and the upper step are both provided with a threaded hole fixed with the connecting hinge piece.

[0012] Further, the upper step is provided in a right-angled trapezoidal shape, and the placement groove is provided with an inclined surface matched with the right-angled trapezoidal shape.

[0013] Further, the upper surface of the bending top block is provided with a PCM placement groove.

[0014] Further, the first wire avoiding groove is provided in a convex letter structure, the convex letter structure comprises a small head end and a large head end, and the upper surface of the bending top block is provided with a second wire avoiding groove located at the lower end of the PCM placement groove and corresponding to the small head end.

[0015] Further, the four corners of the bending plate are all provided in an arc shape.

[0016] Further, the lower jig is provided with a handle groove symmetrically distributed along the two sides of the mounting groove.

[0017] Beneficial effects

[0018] The inclined slope surface at the front end of the upper cover plate cooperates with the stepped bending plate, the bending angle is gradually adjusted through the hinged structure, the bending curvature of the tab is ensured to be uniform and smooth, the stress concentration problem is effectively alleviated, the tab rupture risk is reduced, the through groove and the matched groove are cooperatively designed to fix the position of the tab extending end and reserve a reasonable bending space, the dynamic matching of the bending top block and the inclined slope surface forms a stable stress point, the nested groove is provided to realize accurate positioning and effectively isolate the circuit, damage caused by line extrusion in the bending process is avoided, and the operation safety is greatly improved.

[0019] The tab bending jig is assembled, accurate control is realized, high-precision positioning is realized, automation is easily realized in cooperation with a mechanical arm, the bending efficiency is improved, the working hours are reduced, the cost is reduced, and the like. The assembling process applied to the core component "small soft pack lithium battery" of the Bluetooth / wearable product can realize automation and improve the assembling efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a whole structure schematic view of a small soft pack lithium battery module tab bending jig of the utility model;

[0021] Figure 2 is a split structure schematic view of a small soft pack lithium battery module tab bending jig of the utility model.

[0022] Explanation of reference signs: 1, upper cover plate; 2, lower jig; 3, connecting hinge piece; 4, bending plate; 5, handle groove; 6, bending top block; 7, PCM placing groove; 8-1, first wire avoiding groove; 8-2, second wire avoiding groove. DETAILED DESCRIPTION

[0023] The utility model will be further described below in conjunction with the drawings. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0024] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0025] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0026] Example 1

[0027] As Figure 1 And Figure 2As shown in the utility model provides a kind of small soft pack lithium battery module tab bending jig, including upper cover plate 1 and lower jig 2, lower jig 2 is equipped with the nested recess of placing battery module, nested recess includes the installation groove that the shape of battery module is in accord with, upper cover plate 1 is pressed on the upper surface of lower jig 2, the front end of upper cover plate 1 is equipped with inclined slope, lower jig 2 is equipped with the through groove and the lamination groove in the front end and rear end of installation groove and with the front end and rear end of upper cover plate 1 correspond, the tab protruding end of battery module is laminated in the bottom surface of through groove, the side of lower jig 2 corresponding through groove is connected with bending plate 4, bending plate 4 is arranged in ladder and includes upper step and lower step, upper step is hinged with lower jig 2, lower step is equipped with the bending top block 6 of protruding step surface, bending top block 6 can be rotated to the position of being laminated with the inclined slope of upper cover plate 1.

[0028] The utility model discloses through the inclined slope of upper cover plate front end and ladder type bending plate cooperation, realize the progressive regulation of bending angle by hinged structure, ensure that tab bending radian is uniform and smooth, effectively alleviate stress concentration problem, reduce tab fracture risk, the cooperation design of through groove and lamination groove both fix tab protruding end position, again reserve reasonable bending space, combine bending top block with the dynamic lamination of inclined slope and form stable stress point, realize accurate positioning while effectively isolating line by setting nested recess, avoid the damage caused by line extrusion in the process of bending, substantially improve operating safety.

[0029] Embodiment 2

[0030] As Figure 1 And Figure 2 As shown in the utility model embodiment provides a kind of small soft pack lithium battery module tab bending jig, including upper cover plate 1, lower jig 2, bending plate 4 and handle slot 5, lower jig 2 is equipped with the nested recess of placing battery module, nested recess includes installation groove, installation groove is in accord with the shape of battery module, installation groove both sides are equipped with handle slot 5 to facilitate taking, upper cover plate 1 is pressed on the upper surface of lower jig 2, the front end of upper cover plate 1 is equipped with inclined slope, lower jig 2 is equipped with the through groove and the lamination groove in the front end and rear end of installation groove, when upper cover plate 1 is pressed on lower jig 2, its front end and rear end are placed in through groove and lamination groove respectively, the tab protruding end of battery module is laminated in the bottom surface of through groove, the side of lower jig corresponding through groove is connected with bending plate 4, bending plate 4 is arranged in ladder and includes upper step and lower step, upper step is hinged with lower jig 2, lower step is equipped with the bending top block 6 of protruding step surface, bending top block 6 can be rotated to the position of being laminated with the inclined slope of upper cover plate.

[0031] In the embodiment, the lower jig 2 is connected with the upper step of the bending plate 4 through the connecting hinge piece 3.

[0032] In the embodiment, the lower jig 2 is provided with a connecting hinge piece placing groove, and the placing groove and the upper step are both provided with threaded holes fixed with the connecting hinge piece 3.

[0033] In the embodiment, the upper step is in the shape of a right-angled trapezoid, and the placing groove is provided with an inclined surface matching the right-angled trapezoid.

[0034] In the embodiment, the upper surface of the bending top block 6 is provided with a PCM placing groove 7 and a part avoiding / supporting point, so as to avoid PCM deviation and part damage.

[0035] In the embodiment, the mounting groove is provided with a first wire avoiding groove 8-1, the height of the inner bottom surface 8-1 of the first wire avoiding groove from the upper surface of the lower jig 2 is greater than the height of the inner bottom surface of the mounting groove from the upper surface of the lower jig 2, the first wire avoiding groove 8-1 is in the shape of a Chinese character 'Kou', the Chinese character 'Kou' shape includes a small head end and a large head end, the bending top block 6 is provided with a second wire avoiding groove 8-2 located at the lower end of the PCM placing groove 7 and corresponding to the small head end, so as to avoid damaging the connecting wire, increase the bending stroke and avoid interference with other settings when bending.

[0036] In the embodiment, the four corners of the bending plate 4 are all in the shape of an arc, so as to avoid damaging the product during use.

[0037] In the embodiment, the lower jig is made of an anti-static cushion wood material, the upper cover plate is made of a plastic steel material, the connecting lotus leaf is made of a steel material, and the bending plate is made of a plastic steel material.

[0038] In use, the small head end of the first wire avoiding groove and the second wire avoiding groove of the lower jig and the bending plate are parallel, the battery module with the tab is placed in the mounting groove, the connecting wire is placed in the first wire avoiding groove and the second wire avoiding groove, the PCM connected with the tab is placed in the PCM placing groove on the bending top block, the upper cover plate is covered on the lower jig, the upper cover plate is ensured to be flat, the tab of the battery module horizontally extends from the through groove and is located above the bending top block, then the rotating bending plate is rotated until the upper surface of the bending top block is rotated to the position closely attached to the inclined slope surface of the upper cover plate, at this time, the tab is bent through the rotating bending plate and the inclined slope surface, after the operation is completed, the position of the rotating bending plate is restored, the upper cover plate is opened, and the battery module is taken out from the lower jig through the taking handle grooves on the long sides of the mounting groove.

[0039] The utility model will replace the traditional mode, and is more convenient and accurate in operation, is favorable for personnel to take and weld objects, is more beautiful in appearance, and compared with the traditional mode, personnel adopt the finger bending more conveniently, quickly and accurately.

[0040] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Any person skilled in the art, without departing from the technical scheme of the present application, can make many possible changes and modifications to the technical scheme of the present application, or modify equivalent embodiments with equivalent changes. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical scheme of the present application, without departing from the technical scheme of the present application, all belong to the protection scope of the present technical scheme.

Claims

1. A small soft-pack lithium battery module tab folding jig, characterized in that, The utility model provides a battery module embedding device, including upper cover plate and lower tool, the nest recess of placing battery module is equipped on lower tool, nest recess includes the installation groove that is in accord with the shape of battery module, upper cover plate is pressed on the upper surface of lower tool, the front end of upper cover plate is equipped with the inclined slope, the through groove and the close groove that are located the front end and rear end of installation groove and correspond with the front end and rear end of upper cover plate are equipped on lower tool, the lug protruding end of battery module is close in the bottom surface of through groove, the side of lower tool corresponds through groove is connected with the bending plate of folding, and the bending plate is arranged in steps including upper step and lower step, upper step is articulated with lower tool, and lower step is equipped with the bending top block of protruding step face, and bending top block can rotate to the position of close to the inclined slope of upper cover plate. 2.The tab folding jig for a small soft-pack lithium battery module according to claim 1, wherein The lower tool is connected with the upper step of the bending plate through a connecting hinge piece. 3.The tab folding jig for small soft-pack lithium battery modules of claim 2, wherein, The lower tool is equipped with a connecting hinge piece placement groove, and the placement groove and the upper step are both provided with screw holes for fixing the connecting hinge piece. 4.The tab folding jig for a small soft-pack lithium battery module according to claim 3, characterized in that, The upper step is arranged in a right-angled trapezoidal shape, and the placement groove is provided with an inclined surface matching the right-angled trapezoidal shape. 5.The tab folding jig for a small soft-pack lithium battery module according to claim 1, wherein The upper surface of the bending top block is provided with a PCM placement groove. 6.The tab folding jig for small soft-pack lithium battery modules of claim 5, wherein, A first wire-avoiding groove is arranged in the installation groove, the height of the inner bottom surface of the first wire-avoiding groove from the upper surface of the lower tool is greater than the height of the inner bottom surface of the installation groove from the upper surface of the lower tool, the first wire-avoiding groove is arranged in a convex letter shape, the convex letter shape includes a small head end and a large head end, and the bending top block is provided with a second wire-avoiding groove located at the lower end of the PCM placement groove and corresponding to the small head end. 7.The tab folding jig for a small soft-pack lithium battery module according to claim 1, wherein, The four corners of the bending plate are all arranged in an arc shape. 8.The tab folding jig for a small soft-pack lithium battery module according to claim 1, wherein, The lower tool is provided with a handle groove symmetrically distributed along the two sides of the installation groove.

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