CN219212084U

CN219212084U - Welding positioning jig for full-lug battery cell current collecting disc

Info

Publication number: CN219212084U
Application number: CN202223328800.5U
Authority: CN
Inventors: 朱智锋
Original assignee: Jiangsu Tenpower Lithium Co ltd
Current assignee: Jiangsu Tenpower Lithium Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-06-20
Anticipated expiration: 2032-12-13

Abstract

The utility model discloses a welding positioning jig for a full-lug battery cell current collecting disc, which belongs to the technical field of cylindrical lithium battery manufacturing. The positive end cover and the negative end cover are respectively connected with two ends of the jig main body, and the jig main body is provided with positioning holes for placing the battery cell and the negative current collecting disc. The end face of the jig main body, which is connected with the positive end cover, is provided with a positioning clamping groove for placing the positive current collecting disc. The positive end cover is provided with a positive end pressing plate for flattening the positive current collecting disc and the battery cell, and the negative end cover is provided with a negative end pressing plate for flattening the negative current collecting disc and the battery cell. The utility model has simple and ingenious structure and reliable positioning, can effectively improve the precision of the welding procedure of the positive and negative electrode current collecting plates, and avoids poor welding caused by misplacement of parts. The welding of the battery cells with different size structures can be completed through the replacement of the jig, structural change is not needed on the equipment, and the battery cells are convenient and quick to cut, so that quick structural verification in the research and development stage is facilitated.

Description

Welding positioning jig for full-lug battery cell current collecting disc

Technical Field

The utility model relates to a welding positioning jig for a full-lug battery cell current collecting disc, and belongs to the technical field of manufacturing of cylindrical lithium batteries.

Background

The cylindrical full-tab cell structure in the prior art is characterized in that after two ends of the cell are mechanically flattened, positive and negative current collecting plates are welded at two end surfaces of the cell respectively, and because the current collecting plates are limited in structural design, the whole structure is thinner, the thickness is less than 0.2mm, and the structure is provided with a tiny boss structure, so that the positive and negative current collecting plates are difficult to reliably position and fix. The battery structure technology requires that the relative position of the current collecting disc and the battery core is fixed and reliable after welding. The current scheme is to position the current collecting disc and the battery cell respectively, and weld the current collecting disc and the battery cell after combining the current collecting disc and the battery cell, and the scheme has a complex structure and is not suitable for production requirements such as quick cutting.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, provides a welding positioning jig for a full-lug battery cell current collecting disc, and solves the problems that a cylindrical full-lug battery cell connecting structure is complex and is not suitable for rapid cutting in the prior art.

In order to achieve the above purpose/solve the above technical problems, the present utility model is realized by adopting the following technical scheme:

the utility model provides a welding positioning jig for a full-lug battery cell current collecting disc, which comprises a jig main body, a positive end cover and a negative end cover; the positive end cover and the negative end cover are respectively connected with the two ends of the jig main body; the jig main body is provided with a positioning hole for placing the battery cell and the negative electrode current collecting disc; the end face of the jig main body, which is connected with the positive end cover, is provided with a positioning clamping groove for placing a positive current collecting disc; the positive end cover is provided with a positive end pressing plate for flattening the positive current collecting disc and the battery cell; the negative end cover is provided with a negative end pressing plate for flattening the negative current collecting disc and the battery cell.

Further, the positive end cover and the negative end cover are both in adsorption connection with the jig main body through magnets.

Further, the depth of the positioning hole is smaller than the length of the battery cell.

Further, the positive terminal pressing plate and the negative terminal pressing plate are made of brass.

Further, the locating pin assemblies used for locating are arranged on one sides, connected with the jig main body, of the positive end cover and the negative end cover, and pin holes matched with the locating pin assemblies are formed in the end faces, connected with the positive end cover and the negative end cover, of the jig main body.

Further, the locating pin assembly comprises two locating pins which are diagonally arranged.

Further, elastic protrusions are arranged in the positioning holes and used for positioning the battery cores with different sizes.

Furthermore, the positioning holes are of telescopic structures and are used for positioning the battery cells with different sizes.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a welding positioning jig for a full-lug battery cell current collecting disc, which comprises a jig main body, a positive end cover and a negative end cover. The positive end cover and the negative end cover are respectively connected with two ends of the jig main body, the positive end cover is provided with a positive end pressing plate for flattening the positive current collecting disc and the battery cell, and the negative end cover is provided with a negative end pressing plate for flattening the negative current collecting disc and the battery cell. The jig main body is provided with a positioning hole for placing the battery cell and the negative electrode current collecting disc, and the end face of the jig main body connected with the positive electrode end cover is provided with a positioning clamping groove for placing the positive electrode current collecting disc. The utility model has simple and ingenious structure and reliable positioning, can effectively improve the precision of the welding procedure of the positive and negative electrode current collecting plates, and avoids poor welding caused by misplacement of parts. The locating hole can be set to telescopic structure or be provided with elastic bulge for the electric core of location not unidimensional, the electric core welding of different size structures can be accomplished through changing the tool, need not to do the structural change on the equipment, and convenient quick cutting type helps realizing the quick structural verification of research and development stage.

Drawings

Fig. 1 is a structural exploded view of a welding positioning jig for a full-tab cell current collecting disc provided by an embodiment of the utility model;

fig. 2 is a schematic structural diagram of a battery cell and a positive and negative electrode current collecting disc in a welding positioning jig for a battery cell current collecting disc with full tab according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of an assembled positioning fixture for welding a full-tab cell current collecting disc according to an embodiment of the present utility model;

in the figure: 1. a positive electrode end cap; 2. a positive end pressing plate; 3. a jig main body; 4. a negative end pressing plate; 5. a negative end cap; 6. a battery cell; 7. a pin hole; 8. positioning holes; 9. a positioning pin; 10. positioning clamping grooves; 11. a magnet; 12. a positive electrode current collecting plate; 13. a negative electrode current collecting plate.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying 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 utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, 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 above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Embodiment one:

as shown in fig. 1 to 3, the embodiment provides a welding positioning jig for a full-tab cell current collecting disc, which comprises a jig main body 3, a positive end cover 1 and a negative end cover 5. The positive end cover 1 and the negative end cover 5 are respectively connected with two ends of the jig main body 3, the positive end cover 1 and the negative end cover 5 are respectively connected with the jig main body 3 through magnets 11 in an adsorption mode, the positive end cover 1 is connected with the positive end face of the jig main body 3, and the negative end cover 5 is connected with the negative end face of the jig main body 3. The positive end cover 1 is provided with a positive end pressing plate 2 for flattening the positive current collecting disc 12 and the battery cell 6, the negative end cover 5 is provided with a negative end pressing plate 4 for flattening the negative current collecting disc 13 and the battery cell 6, and the positive end pressing plate 2 and the negative end pressing plate 4 can flatten the positive current collecting disc 12, the negative current collecting disc 13 and the battery cell 6, so that the battery cell 6, the positive current collecting disc 12 and the negative current collecting disc 13 are stably assembled to ensure welding. The anode terminal pressing plate 2 and the cathode terminal pressing plate 4 are made of brass.

The center of tool main part 3 is equipped with the locating hole 8 that is used for placing electric core 6 and negative pole mass flow disk 13, and the degree of depth of locating hole 8 is less than the length of electric core 6, makes negative pole end platen 4 and the anodal end platen 2 of tool main part 3 both sides can compress tightly electric core 6 in order to guarantee the welding. The positioning hole 8 can be provided as a telescopic structure or elastic protrusions are arranged in the positioning hole 8, and the two methods can enable the positioning hole 8 to be matched with the battery cells 6 with different sizes and position the battery cells 6 with different sizes.

The end face of the jig main body 3 connected with the positive end cover 1 is also provided with a positioning clamping groove 10 for placing a positive current collecting disc 12.

The positive electrode end cover 1 and the negative electrode end cover 5 are connected with the jig main body 3, and a locating pin assembly for locating is arranged on one side of the jig main body 3, and meanwhile, a pin hole 7 which is adaptive to the locating pin assembly is formed in the end face, connected with the positive electrode end cover 1 and the negative electrode end cover 5, of the jig main body 3. The locating pin assembly comprises two locating pins 9 which are arranged diagonally. The pin holes 7 are adapted to the positioning pins 9, so that two diagonally arranged pin holes 7 are respectively arranged on the two end faces of the jig main body 3.

Working principle: firstly, placing the kneaded battery cell 6 into a positioning hole 8 in the center of the jig main body 3 in the positive and negative directions; then, the positive electrode current collecting disc 12 is placed in a positioning clamping groove 10 of the positive end face of the jig main body 3; the positive end cover 1 provided with the positive end pressing plate 2 is adsorbed on the positive end face of the jig main body 3 to press the positive current collecting disc 12; then the negative electrode current collecting disc 13 is put into the positioning hole 8 from the negative electrode end face of the jig main body 3; then, the negative end cover 5 provided with the negative end pressing plate 4 is adsorbed on the negative end face of the jig main body 3 to press the negative current collecting disc 13; and finally, placing the whole jig into a device conveying device, and conveying to a welding machine for welding operation.

The structure of this embodiment is comparatively simple ingenious, and the location is reliable, can effectively improve the welding process precision of anodal mass flow dish 12 and negative pole mass flow dish 13, avoids because of the welding failure that the part misplacement leads to. The locating hole 8 can be set to telescopic structure or be provided with elastic bulge for the electric core 6 of location not unidimensional, the electric core 6 welding of different size structures can be accomplished through changing the tool, need not to do the structural change on the equipment, and convenient quick cutting is helped realizing the quick structural verification of research and development stage.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims

1. The full-lug cell current collecting disc welding positioning jig is characterized by comprising a jig main body (3), a positive end cover (1) and a negative end cover (5); the positive end cover (1) and the negative end cover (5) are respectively connected with two ends of the jig main body (3); the jig main body (3) is provided with a positioning hole (8) for placing the battery cell (6) and the negative electrode current collecting disc (13); the end face of the jig main body (3) connected with the positive end cover (1) is provided with a positioning clamping groove (10) for placing a positive current collecting disc (12); the positive end cover (1) is provided with a positive end pressing plate (2) for pressing the positive current collecting disc (12) and the battery cell (6); the negative end cover (5) is provided with a negative end pressing plate (4) for pressing the negative current collecting disc (13) and the battery cell (6).

2. The welding positioning jig for the full-tab cell current collecting disc according to claim 1, wherein the positive end cover (1) and the negative end cover (5) are in adsorption connection with the jig main body (3) through magnets (11).

3. The welding positioning jig for the full-tab cell current collecting disc according to claim 1, wherein the depth of the positioning hole (8) is smaller than the length of the cell (6).

4. The welding positioning jig for the full-tab cell current collecting disc according to claim 1, wherein the positive electrode end pressing plate (2) and the negative electrode end pressing plate (4) are made of brass.

5. The welding positioning jig for the full-lug cell current collecting disc according to claim 1, wherein positioning pin assemblies for positioning are arranged on one sides of the positive electrode end cover (1) and the negative electrode end cover (5) connected with the jig main body (3), and pin holes (7) matched with the positioning pin assemblies are formed in end faces of the jig main body (3) connected with the positive electrode end cover (1) and the negative electrode end cover (5).

6. The welding positioning jig for the full-tab cell current collecting disc according to claim 5, wherein the positioning pin assembly comprises two positioning pins (9) which are diagonally arranged.

7. The welding positioning jig for the full-tab cell current collecting disc according to claim 1, wherein elastic protrusions are arranged in the positioning holes (8) and used for positioning the cells (6) with different sizes.

8. The welding positioning jig for the full-tab cell current collecting disc according to claim 1, wherein the positioning holes (8) are of telescopic structures and are used for positioning cells (6) of different sizes.