Die cutting depth measuring structure for battery pole piece

Abstract

The utility model discloses a battery pole piece die cutting depth measuring structure which comprises an upper die and a lower die, a pressing plate and a die cutting punch are arranged on the side, facing the lower die, of the upper die, the die cutting punch is located in the pressing plate and can ascend and descend relative to the pressing plate, a battery pole piece is placed on the lower die, and the die cutting punch is located in the pressing plate and can ascend and descend relative to the pressing plate. The upper die is provided with a driving assembly used for controlling the upper die to press downwards, the die cutting punch is provided with a first laser depth finder, and the first laser depth finder is used for measuring the pressing depth of the die cutting punch. According to the utility model, the first laser depth finder and the second laser depth finder are respectively arranged on the pressing plate of the upper die and the die-cutting punch, so that the pressing depth of the die-cutting punch is accurately controlled, and the quality of a battery pole piece formed by punching is ensured.

Description

Technical Field

[0001] This utility model relates to the field of battery electrode processing technology, and in particular to a battery electrode die-cutting depth measurement structure. Background Technology

[0002] Batteries are the foundation of today's advanced technology. Like other manufacturing raw materials, the core component of a battery, the electrode sheet, is also an indispensable part of its production process. The electrode sheet directly determines the battery's energy storage capacity, power supply performance, discharge efficiency, and self-discharge rate. Electrode sheets are divided into positive and negative electrode sheets, and they need to be stamped and formed using molds during processing.

[0003] When die-cutting electrodes, the die pressing depth has a significant impact on the electrode forming quality. A die typically consists of an upper die and a lower die. The electrode is placed on the lower die, and the upper die presses down onto the electrode to fix its position. Then, a cutting head on the upper die presses the electrode into shape. To ensure proper die-cutting, the die usually uses a scale to indicate the pressing depth of the cutting head. During die installation, workers adjust the pressing depth using screws and judge the depth by observing the descent of the cutting head and the position of the scale. However, during die pressing, it is necessary to first determine if the upper and lower dies are level. After leveling, the cutting head is gradually pressed down, and the scale is observed until it changes to a specified value, at which point the pressing depth is considered reached and the pressing stops. This method of judging the pressing depth is susceptible to errors in personnel's judgment of leveling and scale observation, resulting in insufficient precision in controlling the pressing depth and a tendency for large deviations. If the die pressing depth is too shallow, the die-cutting effect is poor, resulting in burrs and other defects. Conversely, if the pressing depth is too great, the electrode will begin to move during the die's ascent, causing scraping. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a battery electrode die-cutting depth measurement structure.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A battery electrode die-cutting depth measurement structure includes an upper die and a lower die. The upper die has a pressure plate and a die-cutting punch on the side facing the lower die. The die-cutting punch is located inside the pressure plate and can be raised and lowered relative to the pressure plate. A battery electrode is placed on the lower die. The upper die has a drive assembly for controlling the downward pressing of the upper die. A first laser depth meter is provided on the die-cutting punch for measuring the pressing depth of the die-cutting punch.

[0007] In one embodiment, the die-cutting punch has a pressing depth of 0.5 mm relative to the pressure plate.

[0008] In one embodiment, the pressure plate is provided with a second laser depth gauge, which is used to detect the pressing depth of the pressure plate.

[0009] In one embodiment, a controller is further included, which is electrically connected to the drive assembly, the first laser depth sounder, and the second laser depth sounder.

[0010] In one embodiment, the pressure plate has a die-cutting groove for the die-cutting punch to move up and down relative to the pressure plate.

[0011] In one embodiment, the upper mold is provided with an elastic component for driving the pressure plate to reset. The elastic component includes an elastic element and a push rod located at one end of the elastic element. A through groove is provided in the upper mold. One end of the elastic element is fixed to the bottom of the through groove, and the other end of the elastic element is connected to the push rod. The end of the push rod away from the elastic element is fixedly connected downward to the pressure plate.

[0012] In one embodiment, the pressure plate is provided with a rubber pad on the side facing the lower mold.

[0013] In one embodiment, the lower mold is provided with a fixing plate for placing the battery electrode.

[0014] In one embodiment, the lower die has a slot, the slot being positioned corresponding to the die-cutting punch, and the slot passing through the lower die and the fixing plate.

[0015] In one embodiment, the number of die-cutting punches is at least two sets, and the number of slots is adapted to the number of die-cutting punches.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] This utility model discloses a battery electrode die-cutting depth measurement structure. A first laser depth gauge and a second laser depth gauge are respectively installed on the pressure plate of the upper die and the die-cutting punch. After the battery electrode is placed on the lower die, the upper die begins to move downwards, causing the pressure plate and the die-cutting punch to descend simultaneously. The pressure plate first presses the battery electrode firmly onto the lower die. By synchronizing the values ​​of the first and second laser depth gauges, the difference between the two is made zero, meaning that the pressure plate and the die-cutting punch are at the same horizontal plane. The upper die continues to lower the die-cutting punch until the difference between the value of the second laser depth gauge and the value of the first laser depth gauge on the die-cutting punch is 0.5mm. At this point, the upper die stops pressing down, and the die-cutting punch completes the cutting of the battery electrode. This achieves precise control of the pressing depth to ensure the quality of the stamped battery electrode. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0019] Figure 1 This is a cross-sectional view of a battery electrode die-cutting depth measurement structure provided by this utility model.

[0020] Figure descriptions: 10. Upper mold; 11. Pressure plate; 111. Die-cutting groove; 112. Rubber pad; 12. Die-cutting punch; 13. Drive assembly; 14. Through slot; 20. Lower mold; 21. Fixing plate; 22. Slot; 30. Battery electrode; 40. First laser depth gauge; 50. Second laser depth gauge; 60. Elastic component; 61. Elastic element; 62. Push rod; 63. Gasket. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0022] A battery electrode die-cutting depth measurement structure, referring to Figure 1 The assembly includes an upper mold 10 and a lower mold 20. The upper mold 10 has a pressure plate 11 and a die-cutting punch 12 on the side facing the lower mold 20. The die-cutting punch 12 is located inside the pressure plate 11 and can move up and down relative to the pressure plate 11. A battery electrode 30 is placed on the lower mold 20. The upper mold 10 is equipped with a drive assembly 13 for controlling the downward movement of the upper mold 10. The pressure plate 11 of the upper mold 10 presses downward onto the battery electrode 30 of the lower mold 20, fixing the position of the battery electrode 30. The die-cutting punch 12 continues to press downward relative to the pressure plate 11 to stamp the battery electrode 30 into shape. It should be noted that the drive assembly 13 for controlling the downward movement of the upper mold 10 is existing technology, such as a cylinder, and therefore will not be described in detail in this embodiment. The battery electrode 30 is an electrode strip, and the die-cutting punch 12 is used to cut the electrode strip.

[0023] Reference Figure 1 The die-cutting punch 12 is equipped with a first laser depth gauge 40. When the pressure plate 11 of the upper die 10 presses down onto the battery electrode 30 of the lower die 20, the die-cutting punch 12 continues to press down. The first laser depth gauge 40 is used to measure the pressing depth of the die-cutting punch 12 until the die-cutting punch 12 presses down to the specified depth and then stops pressing. It should be noted that the first laser depth gauge 40 can accurately determine the pressing depth of the die-cutting punch 12, thus solving the problem of insufficient accuracy of the method of observing a scale until the scale changes to the specified pressing depth and then stopping pressing.

[0024] Furthermore, referring to Figure 1The die-cutting punch 12 presses down to the pressure plate 11 at a depth of 0.5mm. When the pressure plate 11 of the upper die 10 presses down onto the battery electrode 30 of the lower die 20, the die-cutting punch 12 presses down by 0.5mm. When the value on the first laser depth gauge 40 is 0.5mm, the die-cutting punch 12 stops pressing down to avoid poor die-cutting effect and defects such as burrs when the die-cutting punch 12 presses down too shallowly, and to avoid the problem of the battery electrode 30 starting to move and causing scratches when the upper die 10 rises due to excessive pressing depth.

[0025] Furthermore, referring to Figure 1 A second laser depth gauge 50 is installed on the pressure plate 11 to detect the pressing depth of the pressure plate 11. After the battery electrode 30 is placed on the lower mold 20, the upper mold 10 begins to move downwards, causing the pressure plate 11 and the die-cutting punch 12 to descend simultaneously. The pressure plate 11 first presses the battery electrode 30 firmly onto the lower mold 20. By synchronizing the values ​​of the first laser depth gauge 40 and the second laser tester, the difference between the two is made to be 0, that is, at this time the pressure plate 11 and the die-cutting punch 12 are on the same horizontal plane. The upper mold 10 continues to descend, causing the die-cutting punch 12 to continue to descend until the difference between the value of the first laser tester and the value of the second laser tester on the die-cutting punch 12 is 0.5mm. At this time, the upper mold 10 stops pressing down, and the die-cutting punch 12 completes the punching of the battery electrode 30. It should be noted that the first laser depth gauge 40 is embedded in the die-cutting punch 12, and the second laser depth gauge 50 is embedded in the pressure plate 11, so as to avoid affecting the stamping and forming of the battery electrode 30 by the pressure plate 11 and the die-cutting punch 12.

[0026] Furthermore, referring to Figure 1 The battery electrode 30 die-cutting depth measurement structure also includes a controller. The controller is electrically connected to the drive assembly 13 that drives the upper die 10 to press down, the first laser depth meter 40, and the second laser depth meter 50. When the first laser depth meter 40 and the second laser depth meter 50 detect a value difference of 0.5mm after synchronization, the controller controls the drive assembly 13 to stop working so as to control the upper die 10 to stop pressing down.

[0027] Furthermore, referring to Figure 1 The pressure plate 11 is provided with a die-cutting groove 111 for the die-cutting punch 12 to move up and down relative to the pressure plate 11. When the pressure plate 11 is pressed onto the battery electrode 30, the die-cutting punch 12 can continue to descend through the die-cutting groove 111 to complete the punching and forming operation of the battery electrode 30.

[0028] Furthermore, referring to Figure 1The upper mold 10 is equipped with an elastic component 60 for driving the pressure plate 11 to reset. The elastic component 60 includes an elastic element 61 and a push rod 62 located at one end of the elastic element 61. A through groove 14 is formed in the upper mold 10, and the elastic component 60 is located within the through groove 14. One end of the elastic element 61 is fixed to the bottom of the through groove 14, and the other end of the elastic element 61 is connected to the push rod 62. The end of the push rod 62 away from the elastic element 61 is fixedly connected downwards to the pressure plate 11. It should be noted that in this embodiment, the elastic element 61 is a spring, and a fixing plate 21 is provided between the elastic element 61 and the push rod 62. A washer 63 is used to make the connection between the elastic element 61 and the push rod 62 more stable. The elastic component 60 can reset the pressure plate 11. When the upper die 10 presses the pressure plate 11 onto the battery electrode 30, the elastic component 61 is cushioned by the downward pressure of the upper die 10. Furthermore, when the upper die 10 continues to press down with the die-cutting punch 12, the elastic force of the elastic component 61 prevents the pressure plate 11 from applying excessive pressure to the battery electrode 30 and damaging it. After the die-cutting punch 12 of the upper die 10 completes its cutting operation and resets upwards, the pressure plate 11 can be simultaneously reset via the elastic component 60.

[0029] Furthermore, referring to Figure 1 A rubber pad 112 is provided on the side of the pressure plate 11 facing the lower mold 20 to prevent damage to the battery electrode 30 when the pressure plate 11 is pressed onto the battery electrode 30.

[0030] Furthermore, referring to Figure 1 The lower die 20 is equipped with a fixing plate 21 for placing the battery electrode 30. The lower die 20 has a slot 22, which corresponds to the position of the die-cutting punch 12. When the upper die 10 controls the die-cutting punch 12 to press down against the corresponding pressure plate 11, the die-cutting punch 12 passes through the slot 22, thereby accommodating the stamped electrode within the slot 22. It should be noted that the stamped electrode is accommodated within the slot 22 so that after the upper die 10 leaves the lower die 20, the electrode can be removed by a robotic arm.

[0031] Furthermore, referring to Figure 1 The number of die-cutting punches 12 is at least two sets, and the number of slots 22 is adapted to the number of die-cutting punches 12.

[0032] This invention features a first laser depth gauge 40 and a second laser depth gauge 50 mounted on the pressure plate 11 of the upper die 10 and the die-cutting punch 12, respectively. After the battery electrode 30 is placed on the lower die 20, the upper die 10 begins to move downwards, causing the pressure plate 11 and the die-cutting punch 12 to descend simultaneously. The pressure plate 11 first presses the battery electrode 30 firmly onto the lower die 20. By synchronizing the values ​​of the first laser depth gauge 40 and the second laser depth gauge, the difference between the two is made zero, meaning that the pressure plate 11 and the die-cutting punch 12 are at the same horizontal plane. The upper die 10 continues to descend, causing the die-cutting punch 12 to continue descending until the difference between the value of the second laser depth gauge and the value of the first laser depth gauge on the die-cutting punch 12 is 0.5 mm. At this point, the upper die 10 stops pressing down, and the die-cutting punch 12 completes the punching of the battery electrode 30. This achieves precise control of the pressing depth to ensure the quality of the stamped battery electrode 30.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A battery electrode die-cutting depth measurement structure, characterized in that, include: The upper die (10) and the lower die (20) are provided with a pressure plate (11) and a die-cutting punch (12) on the side of the upper die (10) facing the lower die (20). The die-cutting punch (12) is located inside the pressure plate (11) and can be raised and lowered relative to the pressure plate (11). A battery electrode (30) is placed on the lower die (20). The upper die (10) is provided with a drive assembly (13) for controlling the lower die (10) to press down. A first laser depth gauge (40) is provided on the die-cutting punch (12) for measuring the pressing depth of the die-cutting punch (12).

2. The battery electrode die-cutting depth measurement structure according to claim 1, characterized in that, The die-cutting punch (12) has a pressing depth of 0.5 mm relative to the pressure plate (11).

3. The battery electrode die-cutting depth measurement structure according to claim 2, characterized in that, The pressure plate (11) is equipped with a second laser depth gauge (50), which is used to detect the pressing depth of the pressure plate (11).

4. The battery electrode die-cutting depth measurement structure according to claim 3, characterized in that, It also includes a controller that is electrically connected to the drive assembly (13), the first laser depth sounder (40), and the second laser depth sounder (50).

5. The battery electrode die-cutting depth measurement structure according to claim 1, characterized in that, The pressure plate (11) is provided with a die-cutting groove (111) for the die-cutting punch (12) to move up and down relative to the pressure plate (11).

6. The battery electrode die-cutting depth measurement structure according to claim 1, characterized in that, The upper mold (10) is provided with an elastic component (60) for driving the pressure plate (11) to reset. The elastic component (60) includes an elastic element (61) and a push rod (62) located at one end of the elastic element (61). A through groove (14) is provided in the upper mold (10). One end of the elastic element (61) is fixed to the bottom of the through groove (14). The other end of the elastic element (61) is connected to the push rod (62). The end of the push rod (62) away from the elastic element (61) is fixedly connected downward to the pressure plate (11).

7. The battery electrode die-cutting depth measurement structure according to claim 1, characterized in that, The pressure plate (11) is provided with a rubber pad (112) on the side facing the lower mold (20).

8. The battery electrode die-cutting depth measurement structure according to claim 1, characterized in that, The lower mold (20) is provided with a fixing plate (21), which is used to place the battery electrode (30).

9. The battery electrode die-cutting depth measurement structure according to claim 8, characterized in that, The lower die (20) is provided with a slot (22), the slot (22) is corresponding to the position of the die-cutting punch (12), and the slot (22) passes through the lower die (20) and the fixing plate (21).

10. A battery electrode die-cutting depth measurement structure according to claim 9, characterized in that, The number of die-cutting punches (12) is at least two sets, and the number of slots (22) is adapted to the number of die-cutting punches (12).

Images