A pole piece punching angle device

Abstract

The utility model provides an electrode piece punches out the angle device, including mounting bracket, driving part, upper cutter die and lower cutter die, be equipped with driving part on the mounting bracket, the output of driving part is connected upper cutter die, lower cutter die with upper cutter die opposite setting, to punch out the angle to electrode piece. This electrode piece punches out the angle device and moves through driving part drive upper cutter die, thereby realizes the automatic punching of electrode piece angle, punches out a gap in the foil edge of electrode piece, and the part of pole lug welding to electrode piece is exposed in the gap, and this gap disperses the stress of pole lug root part, reduces the risk of electrode piece foil crack, improves the yield of battery.

Description

Technical Field

[0001] This utility model relates to the field of electrode processing technology, and more specifically, to an electrode punching and cutting device. Background Technology

[0002] In the lithium battery manufacturing process, tabs need to be welded to the foil of the electrode sheet. The foil of the electrode sheet is thinner than the tab, and the root of the tab is a stress concentration area. During the subsequent winding process, the foil of the electrode sheet is prone to cracking, which affects the performance of the battery. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an electrode punching angle device, which punches a notch at the edge of the electrode, and a part of the electrode tab is exposed in the notch after being welded to the electrode. The notch disperses the stress at the root of the electrode tab and reduces the risk of the electrode foil cracking.

[0004] To achieve the above objectives, this utility model provides an electrode cutting angle device, including a mounting frame, a driving component, an upper die, and a lower die. The driving component is mounted on the mounting frame, and the output end of the driving component is connected to the upper die. The lower die is arranged opposite to the upper die to cut the angle of the electrode.

[0005] Furthermore, the electrode punching angle device also includes an upper mounting plate and a lower mounting plate. The upper die is mounted on the upper mounting plate, and the upper mounting plate is connected to the output end of the drive unit through a slot structure. The lower die is mounted on the lower mounting plate.

[0006] Furthermore, the slot structure includes a limiting member, a limiting plate, and a locking mounting sleeve. The limiting member is disposed on the upper mounting plate and has a through "⊥" shaped groove. The limiting plate is disposed at the output end of the driving member and engages with the "⊥" shaped groove, thereby connecting the upper mounting plate to the output end of the driving member. The locking mounting sleeve is sleeved on the outside of the output end of the driving member and abuts against the top of the limiting member to prevent the limiting plate from detaching from the "⊥" shaped groove.

[0007] Furthermore, the lower mounting plate is provided with a waste recycling mechanism, which corresponds to the position of the lower die and is used to recycle the electrode waste from punching.

[0008] Furthermore, the electrode punching angle device also includes a buffer plate, which is located between the upper mounting plate and the lower mounting plate. An elastic element and a limiting slide rod are provided between the buffer plate and the upper mounting plate. A punching groove is provided on the buffer plate corresponding to the position of the upper die, and the upper die passes through the punching groove.

[0009] Furthermore, an elastic element mounting plate is provided between the buffer plate and the upper mounting plate, the elastic element mounting plate being used to mount the elastic element.

[0010] Furthermore, a guide is provided between the upper mounting plate and the lower mounting plate to ensure the stability of the upper mounting plate when it moves relative to the lower mounting plate.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] This utility model provides an electrode punching angle device, which drives the upper die to move through a drive component, thereby realizing automatic punching angle of the electrode. A notch is punched out at the edge of the electrode foil. After the tab is welded to the electrode, part of it is exposed in the notch. The notch disperses the stress at the root of the tab, reduces the risk of the electrode foil cracking, and improves the yield of the battery. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall rear structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the overall main structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the installation structure of the buffer plate of this utility model.

[0017] The attached figures are labeled as follows: 1 mounting bracket, 2 driving component, 3 limiting component, 4 "⊥" shaped groove, 5 locking mounting sleeve, 6 limiting plate, 7 upper mounting plate, 8 elastic component mounting plate, 9 buffer plate, 10 lower mounting plate, 11 lower die, 12 waste recycling mechanism, 13 upper die, 14 guide component, 15 elastic component, 16 limiting slide bar, 17 punching groove. Detailed Implementation

[0018] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0019] This utility model provides a device for punching and cutting the angle of an electrode sheet, such as... Figures 1-3As shown, the device includes a mounting frame 1, a drive unit 2, an upper die 13, and a lower die 11. The drive unit 2 is mounted on the mounting frame 1, and its output end is connected to the upper die 13. The lower die 11 is positioned opposite to the upper die 13 to punch the electrode sheet. Specifically, the drive unit 2 shown is a cylinder, and its output end is connected to the upper die 13 to drive the upper die 13 to move towards the lower die 11 to punch the electrode sheet, or to drive the upper die 13 away from the lower die 11 to unload the punched electrode sheet and load a new electrode sheet. Of course, in other embodiments, the drive unit 2 can be a lead screw, a motor, etc., as long as it can move the upper die 13, and there is no limitation here.

[0020] In this embodiment, as Figure 1 , 4 As shown, the upper die 13 and the lower die 11 are matching chamfered square dies, and the notches cut on the electrode sheet are also square. Of course, in other embodiments, the shape of the die is not limited and can be circular, arc-shaped, etc., as long as the notches cut are relatively flat and not easy to crack. There are no restrictions here.

[0021] In another embodiment, such as Figure 1 As shown, the electrode punching angle device also includes an upper mounting plate 7 and a lower mounting plate 10. The upper die 13 is mounted on the upper mounting plate 7, and the upper mounting plate 7 is connected to the output end of the drive component 2 through a slot structure. The lower die 11 is mounted on the lower mounting plate 10. The slot structure includes a limiting member 3, a limiting plate 6, and a locking mounting sleeve 5. The limiting member 3 is located on the upper mounting plate 7 and has a through "⊥" shaped groove 4. The limiting plate 6 is located at the output end of the drive component 2 and engages with the "⊥" shaped groove 4, thereby connecting the upper mounting plate 7 to the output end of the drive component 2. The locking mounting sleeve 5 is fitted outside the output end of the drive component 2 and abuts against the top of the limiting member 3 to prevent the limiting plate 6 from detaching from the "⊥" shaped groove 4. The locking and locking of the locking sleeve 5 and the limiting member 3 can be achieved in a variety of ways. For example, the locking sleeve 5 and the output end of the driving member 2 can be connected by a thread, or a nut can be set on the side of the locking sleeve 5 away from the limiting member 3 to fix the locking sleeve 5.

[0022] In another embodiment, such as Figure 1 , 3 As shown, a waste recycling mechanism 12 is provided on the lower mounting plate 10, corresponding to the position of the lower die 11. The electrode waste after punching falls into the waste recycling mechanism 12, realizing the synchronous recycling of waste. Preferably, the waste recycling mechanism 12 is equipped with a negative pressure suction device to prevent waste debris from contaminating the electrode.

[0023] In another embodiment, such as Figure 4As shown, the electrode punching angle device also includes a buffer plate 9, which is located between the upper mounting plate 7 and the lower mounting plate 10. An elastic element 15 and a limiting slide rod 16 are provided between the buffer plate 9 and the upper mounting plate 7. A punching groove 17 is provided on the buffer plate 9 corresponding to the position of the upper die 13, through which the upper die 13 passes. An elastic element mounting plate 8 is also provided between the buffer plate 9 and the upper mounting plate 7 for mounting the elastic element 15. Specifically, the elastic element mounting plate 8 has two mounting holes, and two elastic elements 15 are provided, one end of which is installed in the mounting hole. The limiting slide rod 16 is used to limit the maximum distance between the buffer plate 9 and the upper mounting plate 7. The buffer plate 9 and the elastic element 15 prevent hard contact between the upper mounting plate 7 and the lower mounting plate 10.

[0024] In another embodiment, such as Figure 2 As shown, a guide member 14 is provided between the upper mounting plate 7 and the lower mounting plate 10 to ensure the stability of the upper mounting plate 7 when it moves relative to the lower mounting plate 10. In this embodiment, there are three guide members 14. Of course, other numbers of guide members 14 are also feasible and are not limited here.

[0025] The electrode punching angle device provided by this utility model drives the upper die 13 to move through the driving component 2, thereby realizing the automatic punching angle of the electrode. A notch is punched out at the edge of the electrode foil. After the electrode tab is welded to the electrode, part of it is exposed in the notch. The notch disperses the stress at the root of the electrode tab, reduces the risk of the electrode foil cracking, and improves the yield of the battery.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A tab punch corner device, characterized by, include: Mounting bracket (1); The driving component (2) is provided on the mounting bracket (1); Upper die (13), the output end of the drive member (2) is connected to the upper die (13); and The lower die (11) is arranged opposite to the upper die (13) to punch the electrode.

2. The pole piece punching angle device of claim 1, wherein, Also includes: Upper mounting plate (7), the upper die (13) is mounted on the upper mounting plate (7), the upper mounting plate (7) is connected to the output end of the drive unit (2) through a slot structure; and The lower mounting plate (10) is on which the lower die (11) is mounted.

3. The electrode punching angle device according to claim 2, characterized in that, The card slot structure includes: Limiting member (3), the limiting member (3) is provided on the upper mounting plate (7), and the limiting member (3) has a through "⊥" shaped groove (4); A limiting plate (6) is provided at the output end of the driving member (2), and the limiting plate (6) engages in the "⊥" shaped groove (4), thereby connecting the upper mounting plate (7) to the output end of the driving member (2); and Locking mounting sleeve (5) is fitted outside the output end of the drive member (2) and abuts against the top of the limiting member (3) to prevent the limiting plate (6) from detaching from the "⊥" shaped groove (4).

4. The electrode punching angle device according to claim 2, characterized in that, The lower mounting plate (10) is provided with a waste recycling mechanism (12), which corresponds to the position of the lower die (11) and is used to recycle the punched electrode waste.

5. The electrode punching angle device according to claim 2, characterized in that, It also includes a buffer plate (9), which is located between the upper mounting plate (7) and the lower mounting plate (10). An elastic element (15) and a limiting slide rod (16) are provided between the buffer plate (9) and the upper mounting plate (7). A punching groove (17) is provided on the buffer plate (9) at the position corresponding to the upper die (13), and the upper die (13) passes through the punching groove (17).

6. The electrode punching angle device according to claim 5, characterized in that, An elastic element mounting plate (8) is provided between the buffer plate (9) and the upper mounting plate (7), and the elastic element mounting plate (8) is used to install the elastic element (15).

7. The electrode punching angle device according to claim 2, characterized in that, A guide (14) is provided between the upper mounting plate (7) and the lower mounting plate (10) to ensure the stability of the upper mounting plate (7) when it moves relative to the lower mounting plate (10).

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