CN219123427U - Positioning jig - Google Patents

Abstract

The application provides a positioning jig relates to battery packaging jig technical field, and positioning jig includes: the positioning assembly comprises a positioning member and a main body, wherein the positioning member comprises a positioning portion for connecting the positioning body with the positioning body; a holding member connected to the positioning body such that the positioning body can rotate about an axis of the holding member, thereby causing the positioning portion to abut against the tab of the battery cell; the positioning body is further configured to be movable relative to the holding member along an extending direction of the axis of the holding member to change a position of the positioning portion in the extending direction of the axis. According to the positioning jig provided by the application, the lug can be ensured to be always and effectively abutted by the positioning part, and when the operation of spot welding with the PCM is performed, the lug can not be subjected to false welding or the welding spot exceeds the position of the lug because of the fact that the lug is out of the positioning part.

Description

Positioning jig

Technical Field

The application relates to the technical field of battery packaging jigs, in particular to a positioning jig.

Background

The PCM (Protection Circuit Module ) is used for protecting the battery cell, and preventing the battery cell from overcharge, overdischarge, short circuit and the like. The PCM needs to be electrically welded with the tab of the battery cell when the battery pack is packaged, and in this process, the tab is usually pressed and fixed by a fixing piece of the jig.

In the prior art, the position of the tab of the battery core is allowed to have a deviation range in a certain direction, and when the tab of the battery core is in the deviation range and is positioned at a position corresponding to the upper limit or the lower limit of the deviation range (namely, the tab position is the upper limit or the lower limit), the fixing piece of the jig only plays a role in pressing the tab, so that the fixing piece is possibly positioned outside the tab to be spot-welded. Therefore, the spot welding can deviate to the outside of the lug, so that the false welding condition occurs, and the condition that the welding spot exceeds the position of the lug occurs, thereby causing the defect of a product.

Disclosure of Invention

In view of the above, the present application provides a positioning fixture, which aims to solve the above technical problems.

The application provides a positioning jig, positioning jig includes locating component and main part, the main part is including the fourth accommodation portion that is used for holding the electric core, locating component set up in the main part, locating component includes: the positioning component comprises a positioning part, wherein the positioning part is connected with the positioning body;

a holding member connected with the positioning body such that the positioning body can rotate about an axis of the holding member, thereby causing the positioning portion to abut against a tab of a battery cell;

wherein the positioning body is movable relative to the holding member along the extending direction of the axis to change the position of the positioning portion in the extending direction of the axis.

Preferably, the positioning assembly further includes an adjustment member provided to at least one side of the positioning member in the extending direction of the axis, the adjustment member abutting against the positioning member to change the position of the positioning portion in the extending direction of the axis.

Preferably, the adjustment member includes a plurality of adjustment portions stacked in an extending direction of the axis, each of the adjustment portions being detachably connected with an adjacent adjustment portion.

Preferably, the main body is provided with a first accommodation portion, both sides of the positioning member in the extending direction of the axis are opposite to an inner side portion of the first accommodation portion, and the adjustment member is provided between the first accommodation portion and the positioning member; the adjustment member is connected with the holding member, and the adjustment member is configured to be rotatable about the holding member.

Preferably, the adjustment member is provided with a relief portion extending from an outer edge of the adjustment member into the adjustment member, a relief space is defined by the relief portion, and a portion of the holding member is allowed to enter the relief space to come into contact with the relief portion.

Preferably, the positioning assembly further includes a pivoting support member provided on at least one side of the holding member in the extending direction of the axis, the pivoting support member for supporting the holding member.

Preferably, the positioning jig comprises a plurality of positioning components arranged along the extending direction of the axis,

wherein, two locating components that are located at both ends of the plurality of locating components in the extending direction of the axis each include one slewing bearing member, and the rest of locating components that are located between both ends of the plurality of locating components in the extending direction of the axis each include two slewing bearing members that are respectively disposed at both sides of the holding member in the extending direction of the axis.

Preferably, the main body comprises second accommodation parts corresponding to the holding members respectively provided by the two positioning assemblies at the two ends one by one, the shape of the second accommodation parts is matched with that of the holding members, the holding members are detachably arranged in the second accommodation parts,

wherein, the main part still includes dodges the holding portion, the second holding portion with dodge the holding portion intercommunication.

Preferably, the main body includes a third accommodating portion, and the pivoting support member is detachably provided in the third accommodating portion;

the positioning jig comprises a shielding member connected with the main body to shield the third accommodating portion and the slewing bearing member.

Preferably, the main body includes a boss for setting the positioning component, and further includes a supporting seat disposed between the boss and the fourth accommodating portion, where the supporting seat is used to co-position the tab with the positioning portion;

and/or the body further comprises an unloading recess extending from a side of the body to an interior of the fourth receiving portion, a portion of the unloading recess extending into the fourth receiving portion being recessed into the body relative to a remaining position of the fourth receiving portion.

According to the positioning jig that this application provided, locating component and main part, the main part is including the fourth accommodation portion that is used for holding the electric core, and locating component sets up in the main part, and locating component includes the locating member, fixes a position the utmost point ear of electric core through the locating portion of locating member, simultaneously, and the location body is configured to can be along the extending direction of holding the axis of component for holding the component motion to this has changed the position of locating portion in extending direction. Even if the lug of the battery cell is at the upper limit position or the lower limit position of the position deviation range, the position of the positioning part can be adjusted according to the position of the lug. And then ensure that the utmost point ear can be by location portion butt effectively all the time, when carrying out the operation with PCM spot welding, the utmost point ear just can not lead to false welding or solder joint to surpass the position of utmost point ear because of appearing outside the location portion, has improved the product percent of pass.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an isometric view of a positioning fixture provided according to an embodiment of the present application in a state of mounting a battery cell;

fig. 2 is a schematic diagram illustrating a top view of a positioning fixture provided according to an embodiment of the present application in a state of mounting a battery cell;

FIG. 3 shows a schematic view of the cross-section at A-A in FIG. 2;

fig. 4 is a schematic diagram illustrating a top view of a positioning jig provided according to an embodiment of the present application with part of components omitted in a state of mounting a battery cell;

fig. 5 shows a schematic diagram of an exploded view of a positioning jig provided according to an embodiment of the present application;

FIG. 6 illustrates a schematic diagram of an isometric view of a press jaw of a positioning jig provided according to an embodiment of the application;

FIG. 7 illustrates a schematic diagram of an isometric view of a shim of a positioning jig provided according to an embodiment of the present application;

fig. 8 is a schematic diagram showing an isometric view of a main body of a positioning jig provided according to an embodiment of the present application;

FIG. 9 shows a schematic diagram of an enlarged view at B in FIG. 8;

fig. 10 shows a schematic diagram of a top view of the cell and PCM.

Reference numerals:

10-a body; 12-cell slots; 14-a supporting seat; 16-step; 18-a platen groove; 20-a first connection hole; 22-pin slots; 24-an extension groove; 26-bearing grooves; 28-a claw pressing groove; 30-unloading the recess; 32-top blocks; 34-pressing claws; 36-a toggle part; 38-mounting holes; 40-abutting part; 42-a gasket; 44-pressing plate; 46-a second connection hole; 48-pins; 50-bearing; 52-a separator; 54-positioning blocks; 56-cell; 58-PCM.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

According to an embodiment of the present application, a positioning jig is provided, and a structure and an operating principle of the positioning jig will be specifically described below with reference to fig. 1 to 10.

In an embodiment, the positioning jig comprises a positioning assembly and a main body, the main body comprises a fourth accommodating part for accommodating the battery cell, the positioning assembly is arranged on the main body, and the positioning assembly comprises a positioning member and a holding member. The positioning member comprises a positioning body and a positioning part connected with the positioning body. The holding member is connected with the positioning body so that the positioning body can rotate about the axis of the holding member so that the positioning portion abuts against the tab of the cell 56. Wherein the positioning body is further configured to be movable relative to the holding member along an extending direction of the axis (i.e., a horizontal direction in fig. 2) to change a position of the positioning portion in the extending direction of the axis.

As such, according to the positioning jig provided in the embodiment of the present application, the tab of the battery cell 56 is positioned by the positioning portion of the positioning member, and at the same time, the positioning body is configured to be movable relative to the holding member along the extending direction of the axis of the holding member, thereby changing the position of the positioning portion in the extending direction of the axis. Even if the tab of the battery cell 56 is at the upper limit position or the lower limit position of the positional deviation range, the position of the positioning portion can be adjusted according to the position of the tab. Further, it is ensured that the tab is always and effectively abutted by the positioning portion, and the tab is not falsely welded or soldered beyond the tab due to the presence of the positioning portion when performing the spot welding operation with the PCM 58.

In an embodiment, as an example, as shown in fig. 6, the holding member may be formed with a shaft member, the positioning body may be formed with a mounting hole 38, and the shaft member may penetrate the mounting hole 38 such that the shaft member penetrates the mounting hole 38. In this way, the positioning body is connected with the shaft member and allowed to move along the shaft member. As an example, the shaft member serving as the holding member may be a pin 48.

In an embodiment, the positioning member may be a collet 34. As shown in fig. 6, the main body structure of the pressing jaw 34 may include the above-described mounting hole 38, and further, the pressing jaw 34 may include an abutment portion 40 extending outwardly from the main body structure of the pressing jaw 34, and the abutment portion 40 may be formed in a rod shape. In an embodiment, the tip of the abutting portion 40, i.e., the end remote from the mounting hole 38, may be provided with a square cylindrical end portion for abutting against the tab, the welding position of the tab being exposed by the square hole of the end portion for the spot welding operation. Further, the pressing claw 34 may further include a stirring portion 36 disposed at an angle (e.g. an obtuse angle) with the abutting portion 40, the stirring portion 36 may also be in a rod shape, and the stirring portion 36 may be used for being stirred by an operator to drive the pressing claw 34 to rotate around the pin 48, so as to abut to position the tab or release the tab.

In an embodiment, the positioning assembly may further include an adjustment member provided to be placed on at least one side of the positioning member in the extending direction of the axis, the adjustment member being engageable with the pressing claw 34 to change the position of the positioning portion in the extending direction of the axis. In this way, the pressing claw 34 is abutted by the adjusting member, so that the position of the pressing claw 34 can be determined relatively reliably, and play that may occur in the pressing claw 34 is avoided, thereby ensuring that the tab is positioned effectively.

In an embodiment, the dimension of the adjustment member in the direction of extension of the axis is configured to be adjustable, whereby by adjusting the dimension of the adjustment member, the adjustment member is allowed to abut the presser finger 34 to obtain different presser finger 34 positions, thereby adapting to different tab position situations.

In an embodiment, the adjustment member may be a spacer 42, and as an example, the adjustment member may include a plurality of adjustment portions stacked in the extending direction of the axis, each of the adjustment portions being detachably connected with the adjacent frame skip portion. That is, as an example, the adjustment member as the gasket 42 may include a plurality of sub-gaskets 42 stacked together, and since the sub-gaskets 42 are detachable (e.g., stacked directly) from the adjacent sub-gaskets 42, for example, the thickness of the gasket 42 may be reduced by simply pulling out the sub-gasket 42 from the adjacent sub-gasket 42, and the thickness of the gasket 42 may be increased by stacking or inserting the sub-gasket 42 into the plurality of sub-gaskets 42 already stacked. In other words, by adjusting the number of sub-shims 42, the thickness of the adjustment member can be adjusted. The thickness of the gasket 42 arranged in this way can be quickly adjusted according to actual needs, which is beneficial to improving the applicability of the positioning jig and simultaneously achieving higher production efficiency.

As shown in fig. 7, in the example given in fig. 7, the shape of the shim 42 may be similar to the shape of the presser finger 34, except that the portion of the shim 42 corresponding to the abutment 40 may have a shorter dimension. In an embodiment, the washer 42 may also have the same portion as the toggle portion 36 of the collet 34 to facilitate the operator's rotation of the collet 34 in synchronization with the rotation of the washer 42.

In an embodiment, the positioning jig may further include a main body 10. The main body 10 may have a plate-like structure, and in an embodiment, the main body 10 may be provided with a first receiving portion, both sides of the positioning member in the extending direction of the axis may be opposite to an inner side portion of the first receiving portion, and the adjustment member may be disposed between the first receiving portion and the positioning member. In this way, by providing the first receiving portion, the side of the spacer 42 facing away from the pressing claw 34 can abut against the inner side of the first receiving portion, that is, the first receiving portion provides the spacer 42 with a position for abutment, which enables the position of the pressing claw 34 to be maintained more effectively. As shown in fig. 5, in an embodiment, the first receiving portion may be a collet groove 28 for receiving a portion of the collet 34, such as a portion of the body structure of the collet 34, such that the toggle portion 36 of the collet 34 is exposed to the exterior of the collet groove 28.

In an embodiment, the adjustment member may be connected with the holding member, the adjustment member being configured to be rotatable around the holding member. For example, as mentioned above, the washer 42 may be rotated in synchronization with the presser foot 34 to improve the operator's smoothness of operation. Here, the spacer 42 may be provided with a hole through which the pin 48 passes.

In an example not shown in the drawings, the adjustment member may be provided with a relief portion extending from an outer edge of the adjustment member into the adjustment member, the relief portion defining a relief space into which a portion of the holding member can enter to come into abutment with the relief portion. The relief may be formed as a cutout that allows the shim 42 to be quickly removed from the pin 48 or quickly installed on the pin 48 without removing the shim 42 from the end of the pin 48. Therefore, the arrangement of the notch can effectively increase the adjustment speed of the gasket 42 and improve the use efficiency of the positioning jig.

In an embodiment, the positioning assembly may further include a pivoting support member provided on at least one side of the holding member in the extending direction of the axis, the pivoting support member being for supporting the holding member. In this way, the holding member is enabled to more stably support the pressure claw 34 and the spacer 42, thereby improving the positioning accuracy of the tab. As an example, the slewing bearing member may be a bearing 50. By providing the bearing 50, the bearing 50 allows the pin 48 and the presser finger 34 to rotate together.

Further, in practice, the positioning jig includes a plurality of positioning assemblies disposed along an extending direction of the axis. As an example, the number of positioning assemblies may be four, and the four positioning assemblies include four pressing claws 34 altogether, so as to meet the requirement of spot welding of four tabs when two battery cells 56 are packaged into a battery cell package.

In an embodiment, two positioning assemblies located at both ends of the four positioning assemblies in the extending direction of the axis may each include one pivoting support member, and the remaining positioning assemblies located between both ends of the plurality of positioning assemblies in the extending direction of the axis may each include two pivoting support members. For the holding member provided with the two slewing bearing members, the two slewing bearing members may be provided on both sides of the holding member in the extending direction of the axis, respectively.

In an embodiment, the main body 10 may include second receiving parts corresponding one to the holding members included in the positioning assemblies located at both ends of the plurality of positioning assemblies, respectively, and the second receiving parts may be shaped to fit the holding members, and the holding members may be detachably disposed in the second receiving parts. In an embodiment, the second receiving portion may be a groove portion of the same contour as the pin 48, and the groove portion may have a size slightly larger than the pin 48, which allows the pin 48 to be removed from the groove portion, so that the second receiving portion is formed as a substantial pin groove 22. Further, the main body 10 further includes a avoidance accommodating portion, where the second accommodating portion is in communication with the avoidance accommodating portion, for example, the avoidance accommodating portion extends along a direction perpendicular to the extending direction of the axis, and the avoidance accommodating portion may be an extension groove 24, which provides a space for an operator to take out the pin 48, so as to take out the pin 48.

In an embodiment, the pin slot 22 may be formed in the platen slot 18 of the body 10, and the platen 44 may be disposed in the platen slot 18 to shield the pin 48. Specifically, the pressing plate 44 may be provided with a second coupling hole 46, and the bottom of the pressing plate groove 18 may be further provided with a first coupling hole 20, and the pressing plate 44 is mounted to the body 10 by threading the first coupling hole 20 and the second coupling hole 46 through a screw.

Further, in the embodiment, since four positioning members are provided, the main body 10 is provided with three wall portions to separate the four presser foot grooves 28. Here, each wall is formed with a third receiving portion, i.e., a bearing groove 26, for disposing the bearing 50, wherein the wall on both sides has one bearing groove 26, respectively, and the wall in the middle has two bearing grooves 26. The positioning jig may further include a shielding member coupled with the body 10 to shield the third receiving portion (the bearing groove 26) and the pivoting support member (i.e., the bearing), and in an embodiment, the shielding member may be a partition plate 52. In the embodiment, a spacer 52 is provided corresponding to each wall portion, and the spacer 52 is provided on an upper end surface of the wall portion, for example, by a screw, to shield the bearing 50. Similarly, the bearing groove 26 may be sized slightly larger than the bearing 50 for disassembly and assembly of the bearing 50.

In an embodiment, the main body 10 may further include a fourth accommodating portion for accommodating the battery cell 56, that is, the battery cell slot 12, and a boss for providing the four positioning components, and the main body 10 further includes a supporting seat 14 disposed between the boss and the fourth accommodating portion, where the supporting seat 14 may be used to co-locate the tab with the positioning portion, so as to ensure that the tab is stably located. Further, in an embodiment, the edge of the cell slot 12 facing the boss may be further provided with a step 16 and a top block 32 for adapting to the structure of the cell, thereby better positioning the cell. Wherein the step portion may be formed of copper.

Further, in an embodiment, the body 10 may further include an unloading recess 30, and as an example, the body 10 may have a rectangular plate-like structure, and the unloading recesses 30 may be provided at both long sides of the rectangular plate-like structure. The unloading recess 30 extends from the side of the body 10 to the interior of the cell 12, and the portion of the unloading recess 30 extending to the interior of the cell 12 may be recessed into the body 10 relative to the rest of the cell 12, thereby providing space for an operator to remove the cell 56. Further, one long side and one short side of the body 10 may be provided with a positioning block 54, and the positioning block 54 may be disposed in the positioning groove and may apply force to the battery cell via a spring (not shown) to position the battery cell.

Further, in other examples, the body may include the boss and the abutment seat described above, or the relief recess described above. That is, in some examples, the body may include only the boss and the abutment seat without the relief recess, while in still other examples, the body may include only the relief recess without the boss and the abutment.

According to the positioning jig provided by the embodiment, when adjustment is needed, the partition plate and the pressing plate can be removed, then the pin, the bearing, the pressing claw and the gasket are reassembled, the gasket originally on the left side of the pressing claw is adjusted to the right side of the pressing claw, and further adjustment of the position of the pressing claw is realized to adapt to the battery cells with different lug positions.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the present application, but rather, the present application is intended to cover any variations of the equivalent structures described herein or shown in the drawings, or the direct/indirect application of the present application to other related technical fields.

Claims (10)

1. The utility model provides a positioning jig, its characterized in that, positioning jig includes locating component and main part, the main part is including the fourth accommodation portion that is used for holding the electric core, locating component set up in the main part, locating component includes: the positioning component comprises a positioning part, wherein the positioning part is connected with the positioning body;

a holding member connected with the positioning body such that the positioning body can rotate about an axis of the holding member, thereby causing the positioning portion to abut against a tab of a battery cell;

wherein the positioning body is movable relative to the holding member along the extending direction of the axis to change the position of the positioning portion in the extending direction of the axis.

2. The positioning jig of claim 1, wherein the positioning assembly further comprises an adjustment member provided to at least one side of the positioning member in the extending direction of the axis, the adjustment member abutting against the positioning member to change the position of the positioning portion in the extending direction of the axis.

3. The positioning jig according to claim 2, wherein the adjustment member includes a plurality of adjustment portions stacked in an extending direction of the axis, each of the adjustment portions being detachably connected with an adjacent adjustment portion.

4. The positioning jig according to claim 2, wherein the main body is provided with a first accommodation portion, both sides of the positioning member in the extending direction of the axis are opposed to an inner side portion of the first accommodation portion, and the adjustment member is provided between the first accommodation portion and the positioning member; the adjustment member is connected with the holding member, and the adjustment member is configured to be rotatable about the holding member.

5. The positioning jig according to claim 2, wherein the adjustment member is provided with a relief portion extending from an outer edge of the adjustment member into the adjustment member, a relief space is defined by the relief portion, and a portion of the holding member is capable of entering into the relief space to come into contact with the relief portion.

6. The positioning jig according to claim 1, wherein the positioning assembly further comprises a slewing bearing member provided on at least one side of the holding member in the extending direction of the axis, the slewing bearing member being for supporting the holding member.

7. The positioning jig of claim 6, wherein the positioning jig comprises a plurality of positioning members disposed along an extension direction of the axis,

wherein, two locating components that are located at both ends of the plurality of locating components in the extending direction of the axis each include one slewing bearing member, and the rest of locating components that are located between both ends of the plurality of locating components in the extending direction of the axis each include two slewing bearing members that are respectively disposed at both sides of the holding member in the extending direction of the axis.

8. The positioning jig according to claim 7, wherein the main body includes second receiving portions corresponding one-to-one to the holding members included in the two positioning assemblies at both ends, respectively, the second receiving portions being shaped to fit the holding members, the holding members being detachably provided in the second receiving portions,

wherein, the main part still includes dodges the holding portion, the second holding portion with dodge the holding portion intercommunication.

9. The positioning jig of claim 7, wherein the body comprises a third receptacle, the slewing bearing member being detachably disposed within the third receptacle;

the positioning jig comprises a shielding member connected with the main body to shield the third accommodating portion and the slewing bearing member.

10. The positioning jig of claim 1, wherein the main body includes a boss for disposing the positioning assembly, the main body further includes a abutment seat disposed between the boss and the fourth receiving portion, the abutment seat for co-positioning the tab with the positioning portion;

and/or the body further comprises an unloading recess extending from a side of the body to an interior of the fourth receiving portion, a portion of the unloading recess extending into the fourth receiving portion being recessed into the body relative to a remaining position of the fourth receiving portion.

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