Die cutting device for battery lamination process

Abstract

The utility model provides a die cutting device for a battery lamination process, and belongs to the field of new energy batteries. The device comprises a die-cutting roller, a supporting roller, a die-cutting mechanism and a pole piece raw material, the die-cutting roller, the supporting roller and the pole piece raw material are all horizontally arranged, the die-cutting roller and the supporting roller are arranged at intervals in the vertical direction, the pole piece raw material is clamped between the die-cutting roller and the supporting roller, a plurality of blades are arranged on the die-cutting roller and arranged at intervals in the circumferential direction of the die-cutting roller, and the die-cutting mechanism is arranged between the die-cutting roller and the supporting roller. And a die cutting mechanism is arranged on one side of the die cutting roller and one side of the supporting roller, is vertically arranged above the pole piece raw materials, and is configured to cut the pole piece raw materials. By adopting the die cutting device for the battery lamination process provided by the embodiment of the utility model, the problem of lower production efficiency in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the field of new energy batteries, in particular to a die-cutting device for a battery lamination process. Background Art

[0002] With the widespread application of new energy batteries, research on the production and processing technology of new energy batteries is also increasing. As an important component of new energy batteries, the battery cells of new energy batteries are currently divided into winding process and stacking process. The stacking process requires die-cutting of electrodes of fixed shape and size after coating.

[0003] The die-cutting tool in the prior art usually adopts a frame-shaped die of a fixed model, and manually presses a pole piece of a fixed shape and size on the coated pole piece raw material through the frame-shaped die.

[0004] The die-cutting tooling in the prior art is manually cut using a frame-shaped die, resulting in low production efficiency. Utility Model Content

[0005] The present invention provides a die-cutting device for a battery lamination process, which can solve the problem of low production efficiency in the prior art. The technical solution is as follows:

[0006] A die-cutting device for battery lamination process, comprising: a die-cutting roller, a support roller, a die-cutting mechanism and a pole piece raw material,

[0007] The die-cutting roller, the support roller and the electrode material are all arranged horizontally. The die-cutting roller and the support roller are arranged at intervals in the vertical direction. The electrode material is clamped between the die-cutting roller and the support roller. The die-cutting roller is provided with a plurality of blades, which are arranged at intervals along the circumference of the die-cutting roller.

[0008] A die-cutting mechanism is provided on one side of the die-cutting roller and the supporting roller. The die-cutting mechanism is vertically arranged above the pole piece raw material and is configured to cut the pole piece raw material.

[0009] Optionally, the die-cutting roller is provided with a plurality of mounting grooves matching the blades, and the plurality of mounting grooves are evenly spaced along the circumference of the die-cutting roller.

[0010] Optionally, there are multiple die-cutting rollers, and the installation grooves on the multiple die-cutting rollers have different spacings.

[0011] Optionally, an anti-slip gasket is provided on the groove wall of the mounting groove, and the anti-slip gasket matches the blade.

[0012] Optionally, a mounting base is provided at the bottom of the blade, the length of the mounting base is greater than the length of the blade, and a base mounting groove matching the mounting base is provided in the mounting groove.

[0013] Optionally, both ends of the blade along the length direction are arc-shaped.

[0014] Optionally, the die-cutting roller includes a first roller and a second roller, one end of the first roller is provided with a mounting post, and one end of the second roller is provided with a mounting hole matching the mounting post.

[0015] Optionally, a mounting protrusion is provided on the mounting column, and a first limiting groove and a second limiting groove matching the mounting protrusion are provided in the mounting hole, the first limiting groove is arranged along the length direction of the second roller, the second limiting groove is arranged along the circumference of the second roller, and the first limiting groove intersects with the second limiting groove.

[0016] The beneficial effects of the technical solution provided by the embodiment of the utility model include at least:

[0017] The present invention provides a die-cutting device for a battery lamination process. The die-cutting mechanism first cuts the edge of the electrode material to form a tab structure. The die-cutting roller and the support roller cooperate to cut the electrode material while the electrode material is clamped and rolled by the die-cutting roller and the support roller. The position of the blade on the die-cutting roller is set in advance to control the size of the electrode formed after cutting the electrode material. The electrode material is continuously passed between the die-cutting roller and the support roller, and the electrode is continuously cut and formed in batches, thereby increasing the efficiency of electrode forming and effectively solving the problem of low production efficiency in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the device provided by the embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the process of processing the electrode raw material into the electrode provided by the embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of an assembly of a die-cutting roller and a blade provided by an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of another die-cutting roller and blade assembly provided by an embodiment of the present utility model;

[0023] Figure 5 It is a partial cross-sectional schematic diagram of the blade and the mounting groove provided by the embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of a blade structure provided by an embodiment of the utility model;

[0025] Figure 7 This is a cross-sectional schematic diagram of a die-cutting roller provided in an embodiment of the present utility model;

[0026] Figure 8 This is a schematic diagram of the cross-sectional structure of the first roller provided in an embodiment of the present utility model;

[0027] Figure 9 This is a schematic diagram of the cross-sectional structure of the second roller provided in an embodiment of the present utility model;

[0028] Figure 10 The embodiment of the present utility model provides Figure 9 Schematic diagram of the AA cross-section structure.

[0029] In the figure: 1-die-cutting roller; 11-mounting slot; 111-base mounting slot; 12-anti-slip pad; 13-first roller; 131-mounting column; 132-mounting protrusion; 14-second roller; 141-mounting hole; 142-first limiting slot; 143-second limiting slot; 2-support roller; 3-die-cutting mechanism; 4-pole material; 5-blade; 51-mounting base; 6-auxiliary support roller. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Figure 1 This is a schematic diagram of the overall structure of the device provided by the embodiment of the utility model; Figure 2 This is a schematic diagram of the process of processing the electrode raw material into the electrode provided by the embodiment of the utility model; Figure 3 This is a schematic diagram of an assembly of a die-cutting roller and a blade provided by an embodiment of the present utility model; Figure 4 This is a schematic diagram of another die-cutting roller and blade assembly provided by an embodiment of the present utility model; Figure 5 It is a partial cross-sectional schematic diagram of the blade and the mounting groove provided by the embodiment of the utility model; Figure 6 This is a schematic diagram of a blade structure provided by an embodiment of the utility model; Figure 7This is a cross-sectional schematic diagram of a die-cutting roller provided in an embodiment of the present utility model; Figure 8 This is a schematic diagram of the cross-sectional structure of the first roller provided in an embodiment of the present utility model;

[0032] Figure 9 This is a schematic diagram of the cross-sectional structure of the second roller provided in an embodiment of the present utility model; Figure 10 The embodiment of the present utility model provides Figure 9 AA cross-sectional structure diagram. Figures 1 to 10 A die-cutting device for a battery lamination process shown includes: a die-cutting roller 1, a support roller 2, a die-cutting mechanism 3 and a pole piece raw material 4. The die-cutting roller 1, the support roller 2 and the pole piece raw material 4 are all arranged horizontally, the die-cutting roller 1 and the support roller 2 are arranged at intervals in the vertical direction, the pole piece raw material 4 is clamped between the die-cutting roller 1 and the support roller 2, a plurality of blades 5 are provided on the die-cutting roller 1, and the blades 5 are arranged at intervals along the circumference of the die-cutting roller 1, a die-cutting mechanism 3 is provided on one side of the die-cutting roller 1 and the support roller 2, the die-cutting mechanism 3 is vertically arranged above the pole piece raw material 4, and the die-cutting mechanism 3 is configured to cut the pole piece raw material 4.

[0033] For example, in the embodiment of the present invention, the die-cutting mechanism 3 can be a laser die-cutting mechanism, and the pole piece raw material 4 can be a coil. The device also includes an auxiliary support roller 6, which, together with the die-cutting roller 1 and the support roller 2, supports the pole piece raw material 4, so that the pole piece raw material 4 can be arranged horizontally, such as Figure 1 and Figure 2 As shown, Figure 2 The blank in the middle is the uncoated area, and the planed surface line is the coated area. The electrode raw material 4 is loaded from the side close to the auxiliary support roller 6, and the electrode raw material 4 is flattened by the auxiliary support roller 6. Figure 2 As shown in the left figure, the upper and lower ends of the pole piece raw material 4 are blank, and the middle part is covered with paint. The die-cutting mechanism 3 is set above the blank upper end of the pole piece raw material 4, as shown in FIG. Figure 2 As shown in the middle figure, the blank area on the upper end of the electrode material 4 is cut into the shape of the ear through a pre-set program, and then the electrode material 4 continues to be transported to the die-cutting roller 1 and the support roller 2 at the right end. When the electrode material 4 passes through the die-cutting roller 1 and the support roller 2, as shown in FIG. Figure 2 As shown in the right side figure, the electrode raw material 4 is cut to form the electrode by a blade 5 pre-set on the die-cutting roller 1. According to the size of the electrode to be produced, the blade 5 is pre-set on the die-cutting roller 1, so that the die-cutting roller 1 cuts the electrode raw material 4 during the circulation process. The electrode formed after cutting falls from the right side into the collection box, completing the batch production of the electrode.

[0034] The embodiment of the present invention provides a die-cutting device for a battery lamination process, which first cuts the edge of the electrode raw material 4 through the die-cutting mechanism 3 to form a pole ear structure, and then cooperates with the die-cutting roller 1 and the support roller 2 so that the electrode raw material 4 is clamped and rolled by the die-cutting roller 1 and the support roller 2. The blade 5 on the die-cutting roller 1 cuts the electrode raw material 4. By setting the position of the blade 5 on the die-cutting roller 1 in advance, the size of the electrode formed after cutting the electrode raw material 4 is controlled. By continuously passing the electrode raw material 4 between the die-cutting roller 1 and the support roller 2, the electrode is continuously cut and formed in batches, thereby increasing the efficiency of electrode forming, which can effectively solve the problem of low production efficiency in the existing technology.

[0035] Optionally, the die-cutting cylinder 1 is provided with a plurality of mounting grooves 11 matching the blades 5 , and the plurality of mounting grooves 11 are evenly spaced along the circumference of the die-cutting cylinder 1 .

[0036] For example, in the embodiment of the present invention, Figure 3 As shown, two blades 5 are installed continuously every two empty installation slots 11. At this time, the device can cut out pole pieces with a size of three installation slots 11 and the pole pieces are of the same size. Figure 4 As shown, on the die-cutting roller 1, two blades 5 are continuously installed with two empty installation slots 11 spaced apart, and two blades 5 are continuously installed with four holes in the installation slots 11. At this time, in one production process, two different sizes of pole pieces can be cut out by this device. The position of the blade 5 on the installation slot 11 is adjusted to meet the production needs of different pole pieces. By providing a plurality of installation slots 11 on the die-cutting roller 1, the blade 5 can be installed on the die-cutting roller 1 through the installation slot 11, thereby improving the convenience of operation of the device. When processing and producing pole pieces of different sizes, the die-cutting roller 1 can be reused. It is only necessary to adjust the blade 5 to be installed on different installation slots 11 so that the device can process and produce pole pieces of different sizes. There is no need to use one die-cutting roller 1 corresponding to one specification of pole piece production line, thereby reducing production costs and improving the practicality of the device.

[0037] Optionally, there are multiple die-cutting cylinders 1 , and the spacing between the mounting grooves 11 on the multiple die-cutting cylinders 1 is different.

[0038] For example, in an embodiment of the present invention, by providing multiple die-cutting cylinders 1, with the mounting slots 11 on each die-cutting cylinder 1 having different spacings, the device can be adapted to a wider range of electrode production processes of different sizes. In some cases, simply adjusting the blades 5 to be mounted in different mounting slots 11 may result in certain electrode sizes not meeting the requirements. By varying the mounting slots 11 on multiple die-cutting cylinders 1, the adaptability is improved to accommodate a wider range of electrode sizes, thereby further enhancing the practicality of the device.

[0039] Optionally, an anti-slip pad 12 is provided on the groove wall of the installation groove 11 , and the anti-slip pad 12 matches the blade 5 .

[0040] For example, in the embodiment of the present invention, Figure 5 As shown, each mounting groove 11 is provided with two anti-slip pads 12 on the groove wall of the mounting groove 11. By providing the anti-slip pads 12, a greater friction force can be provided for the blade 5, so that the blade 5 is more firmly installed on the die-cutting roller 1, thereby improving the stability of the device.

[0041] Optionally, a mounting base 51 is provided at the bottom of the blade 5 , the length of the mounting base 51 is greater than the length of the blade 5 , and a base mounting groove 111 matching the mounting base 51 is provided in the mounting groove 11 .

[0042] For example, in the embodiment of the present invention, Figure 6 and Figure 7 As shown, the bottom of the mounting base 51 matches the base mounting groove 111. When installing the blade 5, one end of the blade 5 can be first inserted into the mounting groove 11 so that the mounting base 51 matches the base mounting groove 11, and then the other end of the blade 5 is inserted into the mounting groove 11. The blade 5 has a certain toughness. When the other end of the blade 5 enters the mounting groove 11, it will be appropriately deformed and then enter the mounting groove 11. After installation is completed, the blade 5 returns to its original shape. By matching the mounting base 51 with the base mounting groove 111, the blade 5 can be more firmly installed in the mounting groove 11, thereby further improving the stability of the device.

[0043] Optionally, both ends of the blade 5 along the length direction are arc-shaped.

[0044] For example, in the embodiment of the present invention, Figure 3 and Figure 4 As shown, by setting the two ends of the blade 5 along the length direction into an arc shape, the four corners of the pole piece formed by cutting by the blade 5 are arc-shaped, thereby providing chamfers for the produced pole piece, so that there is no need to perform secondary processing on the pole piece produced by this device, thereby saving the processing steps of producing the pole piece and improving the production efficiency of this device.

[0045] Optionally, the die-cutting roller 1 includes a first roller 13 and a second roller 14 , wherein a mounting post 131 is provided at one end of the first roller 13 , and a mounting hole 141 matching the mounting post 131 is provided at one end of the second roller 14 .

[0046] For example, in the embodiment of the present invention, Figure 8 and Figure 9As shown, when producing some long-sized pole pieces, the die-cutting roller 1 needs to be configured as a longer structure. To facilitate the production of the die-cutting roller 1 and to improve the structural strength of the die-cutting roller 1, the die-cutting roller 1 is configured as a structure in which a first roller 13 and a second roller 14 are spliced ​​together, thereby improving the versatility of the device. The first roller 13 and the mounting post 131 can be produced in an integrated manner. By matching the outer diameter of the mounting post 131 with the inner diameter of the mounting hole 141, the first roller 13 and the second roller 14 are assembled. The outer diameter of the mounting post 131 can be slightly larger than the inner diameter of the mounting hole 141, thereby ensuring the stability of the connection between the first roller 13 and the second roller 14.

[0047] Optionally, a mounting protrusion 132 is provided on the mounting column 131, and a first limiting groove 142 and a second limiting groove 143 matching the mounting protrusion 132 are provided in the mounting hole 141. The first limiting groove 142 is arranged along the length direction of the second roller 14, and the second limiting groove 143 is arranged along the circumference of the second roller 14. The first limiting groove 142 intersects with the second limiting groove 143.

[0048] For example, in the embodiment of the present invention, Figure 10 As shown, when assembling the first roller 13 and the second roller 14, align the mounting protrusion 132 with the first limiting groove 142. At this time, the first roller 13 and the second roller 14 are in contact with each other, and then the first roller 13 is rotated so that the mounting protrusion 132 passes through the intersection of the first limiting groove 142 and the second limiting groove 143 and enters the second limiting groove 143. At this time, the first roller 13 and the second roller 14 cannot be separated in the length direction, so that the first roller 13 and the second roller 14 are stably connected together, thereby further improving the stability of the device.

[0049] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present invention belongs. The terms "first", "second" and similar words used in the specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "include" or "comprising" mean that the elements or objects appearing before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left", and "right" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0050] The above description is only an optional embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A die-cutting device for battery lamination process, characterized in that: include: A die-cutting roller (1), a support roller (2), a die-cutting mechanism (3) and a pole piece raw material (4), The die-cutting roller (1), the support roller (2) and the pole piece raw material (4) are all arranged horizontally; the die-cutting roller (1) and the support roller (2) are arranged at intervals in the vertical direction; the pole piece raw material (4) is clamped between the die-cutting roller (1) and the support roller (2); a plurality of blades (5) are provided on the die-cutting roller (1); the blades (5) are arranged at intervals along the circumference of the die-cutting roller (1); A die-cutting mechanism (3) is provided on one side of the die-cutting roller (1) and the support roller (2); the die-cutting mechanism (3) is vertically arranged above the pole piece raw material (4); and the die-cutting mechanism (3) is configured to cut the pole piece raw material (4).

2. The die-cutting device for battery lamination process according to claim 1, characterized in that: The die-cutting roller (1) is provided with a plurality of mounting grooves (11) matching the blades (5), and the plurality of mounting grooves (11) are evenly spaced along the circumference of the die-cutting roller (1).

3. The die-cutting device for battery lamination process according to claim 2, characterized in that: There are multiple die-cutting rollers (1), and the installation grooves (11) on the multiple die-cutting rollers (1) have different spacings.

4. The die-cutting device for battery lamination process according to claim 2, characterized in that: An anti-skid pad (12) is provided on the groove wall of the installation groove (11), and the anti-skid pad (12) matches the blade (5).

5. The die-cutting device for battery lamination process according to claim 2, characterized in that: A mounting base (51) is provided at the bottom of the blade (5), the length of the mounting base (51) is greater than the length of the blade (5), and a base mounting groove (111) matching the mounting base (51) is provided in the mounting groove (11).

6. The die-cutting device for battery lamination process according to claim 1, characterized in that: Both ends of the blade (5) along the length direction are arc-shaped.

7. The die-cutting device for battery lamination process according to claim 1, characterized in that: The die-cutting roller (1) comprises a first roller (13) and a second roller (14); one end of the first roller (13) is provided with a mounting post (131); one end of the second roller (14) is provided with a mounting hole (141) matching the mounting post (131).

8. The die-cutting device for battery lamination process according to claim 7, characterized in that: A mounting protrusion (132) is provided on the mounting column (131), and a first limiting groove (142) and a second limiting groove (143) matching the mounting protrusion (132) are provided in the mounting hole (141), wherein the first limiting groove (142) is arranged along the length direction of the second roller (14), and the second limiting groove (143) is arranged along the circumference of the second roller (14), and the first limiting groove (142) and the second limiting groove (143) intersect.

Images