CN221641807U - A composite current collector welding auxiliary mechanism - Google Patents

Abstract

The utility model discloses a welding auxiliary mechanism of a composite current collector, which comprises a cover plate and a base plate, wherein the cover plate is intermittently attached to the base plate, a puncture structure is arranged on the attaching surface of the cover plate, and a puncture hole for the puncture structure to puncture is arranged at the corresponding base plate. The puncture tab tooling can meet the welding of the composite current collector and the electrode post within 100 layers, thereby realizing one-step forming of welding of the battery cell; after the tool is used for puncturing, no splash or explosion point phenomenon occurs in the welding process; the fixture is convenient to integrate onto equipment, so that the welding beat of the equipment is more efficient.

Description

A composite current collector welding auxiliary mechanism

Technical Field

The utility model relates to the technical field of pole tab welding, in particular to a composite current collector welding auxiliary mechanism.

Background Art

Structurally, the structure of the composite current collector is similar to a "sandwich", that is, the middle layer is organic, and the upper and lower layers are copper-plated. Currently, the common organic layers in the middle are PET (polyethylene terephthalate), PP (polypropylene), PI (polyimide), etc. Through vacuum coating and other processes, a composite material formed by a double-layer copper/aluminum conductive layer is deposited on the upper and lower surfaces of the base film. The composite between different materials can maximize the advantages of different materials.

However, for the welding of multi-layer composite current collectors, the traditional welding process has bottlenecks and cannot achieve one-time welding of ultra-multi-layers.

Utility Model Content

In order to solve the above technical problems, a composite current collector welding auxiliary mechanism is provided.

To achieve the above-mentioned purpose, the utility model is configured in a preferred embodiment to include a cover plate and a base plate, wherein the cover plate is intermittently bonded to the base plate, a puncture structure is provided on the bonding surface of the cover plate, and a puncture hole for the puncture structure to penetrate is provided on the corresponding base plate.

The utility model can be further configured as a composite current collector welding auxiliary mechanism in a preferred embodiment, including a cover plate and a substrate, wherein the cover plate is intermittently bonded to the substrate, a puncture structure is arranged on the bonding surface of the cover plate, and a puncture hole for the puncture structure to penetrate is arranged at the corresponding substrate, wherein the puncture structure includes a cone, a pyramid, or a triangular pyramid, and a plurality of cones, pyramids, or triangular pyramids are arranged and arranged in a regular shape.

The utility model can be further configured as a composite current collector welding auxiliary mechanism in a preferred embodiment, including a cover plate and a substrate, the cover plate and the substrate are intermittently bonded, a puncture structure is arranged on the bonding surface of the cover plate, and a puncture hole for the puncture structure to penetrate is arranged at the corresponding substrate, the puncture structure includes a cone or a pyramid or a triangular pyramid, a plurality of cones or pyramids or triangular pyramids are arranged and arranged in a regular shape, the regular shape includes a rectangle or a circle, and the arrangement specification is 3X3 to 20X20.

The utility model can be further configured as a composite current collector welding auxiliary mechanism in a preferred embodiment, including a cover plate and a substrate, the cover plate and the substrate are intermittently bonded, a puncture structure is arranged on the bonding surface of the cover plate, and a puncture hole for the puncture structure to penetrate is arranged at the corresponding substrate, the puncture structure includes a cone or a pyramid or a triangular pyramid, a plurality of cones or pyramids or triangular pyramids are arranged and arranged in a regular shape, the regular shape includes a rectangle or a circle, the arrangement specification is 3X3 to 20X20, and the height of the cone or pyramid or triangular pyramid is 0.5-5mm.

The utility model can be further configured as a composite current collector welding auxiliary mechanism in a preferred embodiment, including a cover plate and a substrate, the cover plate and the substrate are intermittently bonded, a puncture structure is arranged on the bonding surface of the cover plate, and a puncture hole for the puncture structure to penetrate is arranged at the corresponding substrate, the puncture structure includes a cone or a pyramid or a triangular pyramid, a plurality of cones or pyramids or triangular pyramids are arranged and arranged in a regular shape, the regular shape includes a rectangle or a circle, the arrangement specification is 3X3 to 20X20, the height of the cone or pyramid or triangular pyramid is 0.5-5mm, and the bottom edge spacing of the cone or pyramid or triangular pyramid is 0.5-3mm.

The utility model can be further configured as a composite current collector welding auxiliary mechanism in a preferred embodiment, including a cover plate and a substrate, the cover plate and the substrate are intermittently bonded, a puncture structure is arranged on the bonding surface of the cover plate, and a puncture hole for the puncture structure to penetrate is arranged at the corresponding substrate, the puncture structure includes a cone or a pyramid or a triangular pyramid, a plurality of cones or pyramids or triangular pyramids are arranged and arranged in a regular shape, the regular shape includes a rectangle or a circle, the arrangement specification is 3X3 to 20X20, the height of the cone or pyramid or triangular pyramid is 0.5-5mm, the bottom edge spacing of the cone or pyramid or triangular pyramid is 0.5-3mm, and the diameter of the cone or pyramid or triangular pyramid is 0.5-3mm.

The utility model can be further configured as a composite current collector welding auxiliary mechanism in a preferred embodiment, including a cover plate and a substrate, the cover plate and the substrate are intermittently bonded, a puncture structure is arranged on the bonding surface of the cover plate, and a puncture hole for the puncture structure to penetrate is arranged at the corresponding substrate, the puncture structure includes a cone or a pyramid or a triangular pyramid, and a plurality of cones or pyramids or triangular pyramids are arranged and arranged in a regular shape, the regular shape includes a rectangle or a circle, and the arrangement specification is 3X3 to 20X20, the height of the cone or pyramid or triangular pyramid is 0.5-5mm, the spacing between the bottom edges of the cone or pyramid or triangular pyramid is 0.5-3mm, and the diameter of the cone or pyramid or triangular pyramid is 0.5-3mm, and at least 3 groups of interlocking columns are arranged on the bonding surface of the substrate, and interlocking holes are arranged at the cover plate corresponding to the interlocking columns.

Beneficial effect: The utility model provides a composite current collector welding auxiliary mechanism, in which the puncture ear tooling can meet the welding of composite current collectors and poles within 100 layers, thereby realizing one-time forming of battery core welding; and after puncturing by this tooling, no spatter and no explosion point phenomenon occurs during the welding process; this tooling is easy to be integrated into the equipment, making the welding rhythm of the equipment more efficient.

BRIEF DESCRIPTION OF THE DRAWINGS

The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

Fig. 1 is a schematic diagram of the overall structure of the utility model.

In the figure, 1 is a cover plate; 2 is a base plate; 3 is an engaging column; 4 is an engaging hole; 5 is a puncture hole; and 6 is a puncture tooth.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

As shown in FIG1 , a composite current collector welding auxiliary mechanism includes a cover plate 1 and a substrate 2. The cover plate 1 is intermittently bonded to the substrate 2. The cover plate 1 is bonded to the substrate 2 through the push of a cylinder. A puncture structure is provided on the bonding surface of the cover plate 1. A puncture hole 5 for the puncture structure to penetrate is provided at the corresponding substrate 2. The multi-layer composite current collector is punctured at one time through the puncture structure.

The puncture structure includes a cone, a pyramid or a triangular pyramid. A plurality of cones, pyramids or triangular pyramids are provided and arranged in a regular shape. On the one hand, it is more beautiful, and on the other hand, it is convenient for subsequent welding.

The regular shape includes a rectangle or a circle, the arrangement specification is 3X3 to 20X20, the height of the cone or pyramid or triangular pyramid is 0.5-5mm, the spacing between the bottom edges of the cone or pyramid or triangular pyramid is 0.5-3mm, and the diameter of the cone or pyramid or triangular pyramid is 0.5-3mm.

At least three groups of interlocking columns 3 are arranged on the bonding surface of the substrate 2, and interlocking holes 4 are arranged at the cover plate 1 corresponding to the interlocking columns 3. The interlocking columns 3 can be used for positioning during the bonding process to prevent the cover plate 1 from sliding during the pressure application process and causing puncture failure.

It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity from another entity, but do not necessarily require or imply any such actual relationship or order between these entities.

The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are identical or similar to the present invention fall within the protection scope of the present invention.

Claims (7)

1. The utility model provides a compound collector welding auxiliary mechanism which characterized in that, includes apron (1) and base plate (2), apron (1) are laminated with base plate (2) interval, are provided with puncture structure on the laminating face that is located apron (1), and corresponding base plate (2) department is provided with puncture hole (5) that supply puncture structure to stab.

2. A composite current collector welding auxiliary mechanism according to claim 1, wherein the piercing structure comprises a cone or pyramid or a triangular pyramid, which are arranged in a regular shape.

3. The composite current collector welding assist mechanism of claim 2 wherein said regular shape comprises a rectangular or circular shape with an arrangement gauge of 3X3 to 20X20.

4. A composite current collector welding auxiliary mechanism according to claim 3, wherein the height of the cone or pyramid is 0.5-5mm.

5. A composite current collector welding assist mechanism as set forth in claim 4 wherein said cone or pyramid or triangular pyramid bottom edge spacing is 0.5-3mm.

6. A composite current collector welding assist mechanism as set forth in claim 5 wherein said cone or pyramid has a diameter of 0.5-3mm.

7. The welding auxiliary mechanism for the composite current collector according to claim 6, wherein at least 3 groups of embedded columns (3) are arranged on the joint surface of the base plate (2), and embedded holes (4) are formed in the positions, corresponding to the embedded columns (3), of the cover plate (1).