Continuous stamping die for battery cell connecting piece

Abstract

The utility model discloses a continuous stamping die for a battery cell connecting piece, and relates to the technical field of stamping dies. The die comprises an upper die, a lower die and a material belt, a first flattening punch, a second flattening punch, a third flattening punch and a fourth flattening punch are sequentially arranged on the upper die from the feeding end to the discharging end at intervals, the first flattening punch and the second flattening punch are located on the front side and the rear side of a material belt respectively, and the first flattening punch and the second flattening punch are used for pressing the material belt to be thin. The third flattening punch and the fourth flattening punch extend from the front side of the material belt to the rear side of the material belt, and the third flattening punch and the fourth flattening punch are used for carrying out groove pressing on the thinned area; a first forming insert core, a second forming insert core, a third forming insert core and a fourth forming insert core are sequentially arranged on the lower die from the feeding end to the discharging end at intervals. According to the utility model, the welding part of the battery cell connecting piece can be automatically thinned, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a continuous stamping die for an electric core connecting piece. Background Art

[0002] When assembling new energy battery cells, a connecting piece is required to conduct electricity from the battery cell to the main battery bus. At present, with the increase in the storage capacity of new energy battery cells, the conductivity requirements of the battery cell connecting piece have been improved. In order to adapt to the greater charging and discharging capacity, the thickness of the battery cell connecting piece needs to be increased to enhance the conductivity. However, since the electrodes and battery cell connecting pieces are usually connected by laser welding, the most stable penetration thickness of the battery cell connecting piece during laser welding is 0.8 to 1.5 mm. Therefore, the welding parts at both ends of the battery cell connecting piece need to be thinned to ensure the welding effect.

[0003] Therefore, it is necessary to provide a continuous stamping die for thinning the battery cell connecting piece. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a continuous stamping die for a battery core connecting piece, which can automatically thin the welding parts of the battery core connecting piece and improve production efficiency.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A continuous stamping die for a battery core connecting piece, comprising an upper die, a lower die and a material strip;

[0007] The material strip passes between the upper die and the lower die;

[0008] The upper die is provided with a first flattening punch, a second flattening punch, a third flattening punch and a fourth flattening punch in sequence from the feed end to the discharge end, wherein the first flattening punch and the second flattening punch are respectively located at the front and rear sides of the material strip, and the first flattening punch and the second flattening punch are used to thin the material strip, and the third flattening punch and the fourth flattening punch extend from the front side to the rear side of the material strip, and the third flattening punch and the fourth flattening punch are used to press grooves in the thinned area;

[0009] The lower die is provided with a first forming insert, a second forming insert, a third forming insert and a fourth forming insert in sequence from the feed end to the discharge end. The first forming insert, the second forming insert, the third forming insert and the fourth forming insert are matched with the first flattening punch, the second flattening punch, the third flattening punch and the fourth flattening punch respectively.

[0010] In some embodiments, the third flattening punch, the fourth flattening punch, the third forming insert and the fourth forming insert are all Z-shaped, and the first grooving column and the second grooving column are respectively installed inside the front side of the third flattening punch and the fourth flattening punch, and the bottom ends of the first grooving column and the second grooving column extend out from the bottom of the third flattening punch and the fourth flattening punch respectively.

[0011] In at least one embodiment, the front edges of the third and fourth forming inserts are surrounded by plate-shaped first and second stopper inserts, and the top ends of the first and second stopper inserts protrude from the tops of the third and fourth forming inserts, respectively.

[0012] The utility model achieves at least the following beneficial effects:

[0013] The first flattening punch and the second flattening punch can be used to thin the front and rear sides of the material strip (the welding parts at both ends of the battery connecting piece). The third flattening punch, the fourth flattening punch, the third forming insert and the fourth forming insert can be used to press grooves in the thinned area on the front side of the material strip, that is, to process grooves on the battery connecting piece, so that the battery connecting piece can meet the conductivity requirements and the laser welding requirements, realize automatic thinning of the battery connecting piece, achieve large-scale processing, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] One or more embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0015] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0016] Figure 2 An exploded view of an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the first flattening punch, the second flattening punch, the third flattening punch, and the fourth flattening punch in a mold closing state according to an embodiment of the present invention;

[0018] Figure 4 It is a front view of the first flattening punch, the second flattening punch, the third flattening punch and the fourth flattening punch of the embodiment of the present utility model;

[0019] Figure 5 It is a structural diagram of the battery cell connecting piece.

[0020] The numbers in the figure are: 1. upper die; 11. upper clamping plate; 12. stop plate; 13. upper stripping plate; 2. lower die; 21. lower template; 3. material strip; 4. first flattening punch; 5. second flattening punch; 6. third flattening punch; 61. first groove pressing column; 7. fourth flattening punch; 71. second groove pressing column; 8. first forming insert; 9. second forming insert; 10. third forming insert; 20. fourth forming insert; 30. first blocking insert; 40. second blocking insert; 50. battery cell connecting piece; 501. groove. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. However, it should be understood that the present invention can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concepts of the present application to those skilled in the art.

[0022] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting this application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. A person skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them. Furthermore, "above," "above," and "above" a first feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher level than the second feature. "Below," "below," and "below" a first feature may include the first feature being directly below or diagonally below the second feature, or simply indicate that the first feature is at a lower level than the second feature.

[0023] like Figures 1 to 4 As shown, a continuous stamping die for a battery cell connecting piece includes an upper die 1, a lower die 2 and a material strip 3, wherein:

[0024] The material strip 3 passes between the upper die 1 and the lower die 2;

[0025] The upper die 1 is provided with a first flattening punch 4, a second flattening punch 5, a third flattening punch 6 and a fourth flattening punch 7 in sequence from the feeding end to the discharging end, wherein the first flattening punch 4 and the second flattening punch 5 are respectively located at the front and rear sides of the material strip 3. The first flattening punch 4 and the second flattening punch 5 are used to flatten the front and rear sides of the material strip 3 (such as Figure 5As shown, the two ends of the battery cell connecting piece 50 are welded at the bottom of the battery cell connecting piece 50, and the third flattening punch 6 and the fourth flattening punch 7 extend from the front side of the material strip 3 to the back side. The third flattening punch 6 and the fourth flattening punch 7 are used to groove the thinned area on the front side of the material strip 3, that is, to form a groove 501 at one end of the battery cell connecting piece 50;

[0026] The lower die 2 is provided with a first forming insert 8, a second forming insert 9, a third forming insert 10 and a fourth forming insert 20 in sequence from the feed end to the discharge end. The first forming insert 8, the second forming insert 9, the third forming insert 10 and the fourth forming insert 20 are matched with the first flattening punch 4, the second flattening punch 5, the third flattening punch 6 and the fourth flattening punch 7 respectively.

[0027] In some embodiments of the present invention, the third flattening punch 6, the fourth flattening punch 7, the third forming insert 10 and the fourth forming insert 20 are all Z-shaped, and the first grooving column 61 and the second grooving column 71 are respectively installed inside the front side of the third flattening punch 6 and the fourth flattening punch 7, and the bottom ends of the first grooving column 61 and the second grooving column 71 extend out of the bottom of the third flattening punch 6 and the fourth flattening punch 7 respectively. When processing the groove 501 at one end of the battery cell connecting piece 50, the Z-shaped third flattening punch 6 and the fourth flattening punch 7 respectively cooperate with the Z-shaped third forming insert 10 and the fourth forming insert 20 to press the material strip 3, which can ensure the stability of the material strip 3 during stamping and prevent one side of the material strip 3 from warping. The first grooving column 61 can process the groove 501 in the thinned area of ​​the material strip 3, and the second grooving column 71 can perform a second processing on the groove 501 processed by the first grooving column 61, thereby ensuring that the size of the groove 501 of the battery cell connecting piece 50 meets the requirements.

[0028] Furthermore, a first plate-shaped stopper 30 and a second plate-shaped stopper 40 are provided around the front edges of the third forming insert 10 and the fourth forming insert 20. The top ends of the first plate-shaped stopper 30 and the second plate-shaped stopper 40 protrude above the tops of the third forming insert 10 and the fourth forming insert 20, respectively. The first plate-shaped stopper 30 and the second plate-shaped stopper 40 can position and block the front side of the strip 3 during the grooving process, ensuring that the shape and size of the processed battery cell connecting piece 50 meet the requirements.

[0029] Specifically, the upper mold 1 includes an upper clamping plate 11, a stop plate 12 and an upper stripping plate 13 arranged in sequence; the first flattening punch 4, the second flattening punch 5, the third flattening punch 6 and the fourth flattening punch 7 are fixed on the upper clamping plate 11; the lower mold 2 includes a lower template 21; the first forming insert 8, the second forming insert 9, the third forming insert 10, the fourth forming insert 20, the first material stop insert 30 and the second material stop insert 40 are inlaid on the lower template 21.

[0030] The utility model can thin the front and rear sides of the material strip 3 (i.e., the welding parts at both ends of the battery cell connecting piece 50) through the first flattening punch 4 and the second flattening punch 5, and can groove the thinned area on the front side of the material strip 3 through the third flattening punch 6, the fourth flattening punch 7, the third forming insert 10 and the fourth forming insert 20, that is, process the groove 501 on the battery cell connecting piece 50, so that the battery cell connecting piece 50 can meet the electrical conductivity requirements and the laser welding requirements; the utility model can realize the automatic thinning of the battery cell connecting piece 50, realize large-scale processing, and improve production efficiency.

[0031] It should be understood that all the above embodiments are illustrative rather than restrictive. Any modifications, equivalent changes and modifications made by those skilled in the art to the specific embodiments described above under the concept of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A continuous stamping die for a battery cell connector, comprising an upper die, a lower die, and a material strip, characterized in that: The material strip passes between the upper die and the lower die; The upper die is provided with a first flattening punch, a second flattening punch, a third flattening punch and a fourth flattening punch in sequence from the feed end to the discharge end, wherein the first flattening punch and the second flattening punch are respectively located at the front side and the rear side of the material strip, and the first flattening punch and the second flattening punch are used to thin the material strip, and the third flattening punch and the fourth flattening punch extend from the front side to the rear side of the material strip, and the third flattening punch and the fourth flattening punch are used to press grooves into the thinned area; The lower die is provided with a first forming insert, a second forming insert, a third forming insert and a fourth forming insert in sequence from the feed end to the discharge end. The first forming insert, the second forming insert, the third forming insert and the fourth forming insert are matched with the first flattening punch, the second flattening punch, the third flattening punch and the fourth flattening punch respectively.

2. The continuous stamping die for the battery core connecting piece according to claim 1, characterized in that: The third flattening punch, the fourth flattening punch, the third forming insert and the fourth forming insert are all Z-shaped, and the first grooving column and the second grooving column are respectively installed inside the front side of the third flattening punch and the fourth flattening punch, and the bottom ends of the first grooving column and the second grooving column extend out from the bottom of the third flattening punch and the fourth flattening punch respectively.

3. The continuous stamping die for the battery core connecting piece according to claim 2, characterized in that: The front edges of the third forming insert and the fourth forming insert are surrounded by a first plate-shaped stopper insert and a second plate-shaped stopper insert, and the top ends of the first plate-shaped stopper insert and the second plate-shaped stopper insert protrude from the top ends of the third forming insert and the fourth forming insert, respectively.

4. The continuous stamping die for the battery core connecting piece according to claim 1, characterized in that: The upper die comprises an upper clamping plate, a stop plate and an upper stripping plate which are arranged in sequence; the first flattening punch, the second flattening punch, the third flattening punch and the fourth flattening punch are fixed on the upper clamping plate.

5. The continuous stamping die for the battery core connecting piece according to claim 1 or 3, characterized in that: The lower mold includes a lower template; the first forming insert, the second forming insert, the third forming insert, the fourth forming insert, the first stopper insert and the second stopper insert are inlaid on the lower template.

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