An electrode sheet alignment precision calibration mechanism for a lithium battery winding process

Abstract

The utility model discloses a kind of pole piece alignment accurate calibration mechanism for lithium battery winding process, and the utility model relates to lithium battery processing equipment technical field.The pole piece alignment accurate calibration mechanism for lithium battery winding process, including bottom plate, the top surface one side of bottom plate is provided with positioning assembly, the positive front of positioning assembly is provided with limiting component;The bottom of limiting component is provided with adjusting assembly, and the bottom of adjusting assembly is connected with the top surface of bottom plate, the top surface of bottom plate and located adjusting assembly one side is provided with PLC controller and control switch group, positioning assembly and limiting component and adjusting assembly are located on same axis, the utility model can guide and limit positive pole piece, negative pole piece and diaphragm, to prevent positive pole piece, negative pole piece and diaphragm from running off when winding, to ensure the quality of positive pole piece, negative pole piece and diaphragm when winding.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery processing equipment technology, specifically to a precise calibration mechanism for electrode alignment in the lithium battery winding process. Background Technology

[0002] The lithium battery winding process is the core step in the manufacturing of lithium battery cells (especially cylindrical and pouch cells). By stacking the positive electrode, negative electrode and separator in the order of "positive-separator-negative-separator", the cells are wound into a cylindrical or flat cell body, which directly determines the energy density, cycle life and safety of the cell.

[0003] However, in the existing lithium battery winding process, the positive electrode, negative electrode and separator are misaligned during winding, resulting in defects such as "exposed core" and "overlapping edges", which reduces the safety of lithium battery use. Therefore, we propose a precise electrode alignment calibration mechanism for the lithium battery winding process to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a precise electrode alignment calibration mechanism for the lithium battery winding process. This mechanism solves the problem of positional deviations in the positive electrode, negative electrode, and separator during winding, which leads to defects such as "exposed core" and "overlapping edges," thereby reducing the safety of lithium battery use.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a precise calibration mechanism for electrode alignment in the winding process of lithium batteries, including a base plate, a positioning component is provided on one side of the top surface of the base plate, and a limit component is provided in front of the positioning component;

[0006] The bottom of the limiting component is provided with an adjustment component, and the bottom of the adjustment component is connected to the top surface of the base plate. A PLC controller and a control switch group are provided on the top surface of the base plate and on one side of the adjustment component.

[0007] Preferably, the positioning component, the limiting component, and the adjusting component are located on the same axis.

[0008] Preferably, the positioning component includes a first electric push rod, the bottom end of which is connected to the top surface of the base plate via a stabilizing seat;

[0009] The telescopic end of the first electric push rod is equipped with a seated bearing, and a first support tube is installed through the inner cavity of the seated bearing. A positioning ring is fixedly installed at one end of the first support tube.

[0010] Preferably, the limiting component includes a support base, and an insertion hole is provided on the side wall of the support base near the center. An insertion rod is movably inserted through the inner cavity of the insertion hole. One end of the insertion rod is fixedly connected to a shaft. A second support tube is installed on the outer side of one end of the shaft through a ball bearing. One end of the second support tube is fixedly connected to a limiting ring.

[0011] A baffle is fixedly installed at the other end of the insertion rod, and a tension spring is sleeved on the insertion rod. The two ends of the tension spring are respectively connected to the support base and the baffle.

[0012] Preferably, the inner cavity of the socket has a polygonal shape in its main view, the inner diameter of the socket is the same as the outer diameter of the plug rod, and the two are movably connected.

[0013] Preferably, the adjustment assembly includes a second electric push rod, the second electric push rod having a mounting base in the middle, and the bottom of the mounting base being connected to the top surface of the base plate;

[0014] The telescopic end of the second electric push rod is equipped with a connecting sleeve, and the inner cavity of the connecting sleeve is fixedly installed with a third electric push rod. The telescopic end of the third electric push rod is connected to the bottom surface of the limiting component.

[0015] Preferably, the PLC controller is electrically connected to the positioning component, the adjustment component, and the control switch group.

[0016] Beneficial effects

[0017] This invention provides a precise electrode alignment calibration mechanism for the lithium battery winding process. Compared with the prior art, it has the following advantages:

[0018] The lithium battery winding process uses an electrode alignment precision calibration mechanism. Before winding the lithium battery, the operator first adjusts the height of the positioning component and inserts the winding needle through one end of the top of the positioning component. Then, the base plate is fixed in the designated position. Next, the operation of the adjustment component can be controlled by the PLC controller through the control switch group, so that the position of the limit component can be flexibly adjusted. This allows the rotating end of the limit component to be inserted into the other end of the winding needle. At this time, the rotating end of the limit component, the winding needle, and the rotating end of the positioning component are on the same axis. Then, by driving the winding needle, the winding needle can be wound and formed into positive electrode, negative electrode and separator.

[0019] When the lithium battery is wound into shape, the limiting and positioning components guide and limit the positive electrode, negative electrode, and separator, preventing them from deviating during winding and ensuring the quality of the winding process. After the lithium battery is wound into shape, the operator controls the adjustment component via a PLC controller using a control switch group. This allows the adjustment component to move the limiting component away from one end of the winding needle, making it easier for the operator to remove the lithium battery from the winding needle. The process is repeated to adjust the limiting component to the other end of the winding needle, completing the winding process of the lithium battery. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a side view of the present invention.

[0022] Figure 3 This is a schematic diagram of the positioning component structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the limiting component structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the adjustment component structure of this utility model.

[0025] In the diagram: 1. Base plate; 2. Positioning assembly; 21. First electric push rod; 22. Stabilizing seat; 23. Bearing with seat; 24. First support tube; 25. Positioning ring; 3. Limiting assembly; 31. Support seat; 32. Insertion hole; 33. Insert rod; 34. Shaft; 35. Second support tube; 36. Limiting ring; 37. Baffle; 38. Tension spring; 4. Adjusting assembly; 41. Second electric push rod; 42. Mounting seat; 43. Connecting sleeve; 44. Third electric push rod; 5. PLC controller; 6. Control switch group. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 - Figure 2This utility model provides a technical solution: a precise calibration mechanism for electrode alignment in the winding process of lithium batteries, including a base plate 1, a positioning component 2 is provided on one side of the top surface of the base plate 1, a limiting component 3 is provided in front of the positioning component 2; an adjustment component 4 is provided at the bottom of the limiting component 3, and the bottom of the adjustment component 4 is connected to the top surface of the base plate 1; a PLC controller 5 and a control switch group 6 are provided on the top surface of the base plate 1 and on one side of the adjustment component 4; the positioning component 2, the limiting component 3 and the adjustment component 4 are located on the same axis.

[0028] Before winding the lithium battery, the operator first adjusts the height of the positioning component 2 and inserts the winding needle through one end of the top of the positioning component 2. Then, the base plate 1 is fixed in the designated position. Next, the operation of the adjustment component 4 is controlled by the control switch group 6 via the PLC controller 5, which allows for flexible adjustment of the position of the limiting component 3. This enables the rotating end of the limiting component 3 to be inserted into the other end of the winding needle. At this time, the rotating end of the limiting component 3, the winding needle, and the rotating end of the positioning component 2 are on the same axis. Then, by driving the winding needle, the winding needle can be wound and formed around the positive electrode, negative electrode, and separator. When the lithium battery is wound and formed, this... The limiting component 3 and positioning component 2 guide and limit the positive electrode sheet, negative electrode sheet, and separator, thereby preventing them from deviating during winding and ensuring the quality of winding. After the lithium battery is wound, the operator controls the adjusting component 4 via the control switch group 6 and the PLC controller 5. This allows the adjusting component 4 to move the limiting component 3 away from one end of the winding needle, making it easier for the operator to remove the lithium battery from the winding needle. The process is repeated to adjust the limiting component 3 to the other end of the winding needle, and so on, to complete the winding process of the lithium battery.

[0029] See Figure 1 - Figure 3 The positioning component 2 includes a first electric push rod 21, the bottom end of which is connected to the top surface of the base plate 1 via a stabilizing seat 22; the telescopic end of the first electric push rod 21 is equipped with a seated bearing 23, and a first support tube 24 is installed through the inner cavity of the seated bearing 23, and a positioning ring 25 is fixedly provided at one end of the first support tube 24.

[0030] The first electric push rod 21 in the positioning assembly 2 can be fixed to the top surface of the base plate 1 via the stabilizing seat 22, and its telescopic end can be installed on the bearing 23. The first support tube 24 can be installed in the inner cavity of the bearing 23 and can also be used to install and fix the positioning ring 25. The first electric push rod 21 can be controlled by the PLC controller 5 via the control switch group 6, so that the height of the positioning ring 25 can be flexibly adjusted. By passing the coil needle through the bearing 23, the first support tube 24 and the positioning ring 25, one end of the positioning ring 25 can limit the winding of the positive electrode, negative electrode and the separator, thereby preventing the positive electrode, negative electrode and the separator from deviating during winding.

[0031] See Figure 1 , Figure 2 and Figure 4 The limiting component 3 includes a support base 31. An insertion hole 32 is provided on the side wall of the support base 31 near the center. An insertion rod 33 is movably inserted through the inner cavity of the insertion hole 32. One end of the insertion rod 33 is fixedly connected to a shaft 34. A second support tube 35 is installed on the outer side of one end of the shaft 34 through a ball bearing. One end of the second support tube 35 is fixedly connected to a limiting ring 36. A baffle 37 is fixedly provided on the other end of the insertion rod 33. A tension spring 38 is sleeved on the insertion rod 33. The two ends of the tension spring 38 are respectively connected to the support base 31 and the baffle 37.

[0032] The support seat 31 in the limiting component 3 can be installed at the output end of the adjusting component 4, and the insertion rod 33 can be movably inserted into the insertion hole 32. Then, the shaft 34 can be fixed to one end of the insertion rod 33, and the second support tube 35 with the limiting ring 36 installed can be installed and fixed via ball bearings. Since the other end of the insertion rod 33 is fixedly provided with a baffle 37, and a tension spring 38 is sleeved on the insertion rod 33, and the two ends of the tension spring 38 are respectively connected to the support seat 31 and the baffle 37. Since they are connected, the spring 38 can provide elastic force to the insertion rod 33 towards the positioning component 2 via the baffle 37. This allows the limiting ring 36 to elastically support the wound positive electrode, negative electrode and separator at one end after the winding needle is inserted into the limiting ring 36, thereby preventing the limiting ring 36 from squeezing the positive electrode, negative electrode and separator at one end. At the same time, the limiting ring 36 can rotate, and thus rotates with the positive electrode, negative electrode and separator when they are wound, thereby preventing the material from getting tangled on the limiting ring 36 and ensuring the safety of the material winding.

[0033] See Figure 4 The inner cavity of the socket 32 ​​has a polygonal shape in the main view. The inner diameter of the socket 32 ​​is the same as the outer diameter of the plug rod 33, and the two are movably connected, which allows the plug rod 33 to move back and forth smoothly in the inner cavity of the socket 32.

[0034] See Figure 1 , Figure 2 and Figure 5 The adjustment component 4 includes a second electric push rod 41, a mounting base 42 is provided in the middle of the second electric push rod 41, and the bottom of the mounting base 42 is connected to the top surface of the base plate 1; a connecting sleeve 43 is installed at the telescopic end of the second electric push rod 41, and a third electric push rod 44 is fixedly installed through the inner cavity of the connecting sleeve 43, and the telescopic end of the third electric push rod 44 is connected to the bottom surface of the limiting component 3.

[0035] By adjusting the second electric push rod 41 in component 4, it can be installed on the top surface of the base plate 1 via the mounting base 42, and the connecting sleeve 43 can be installed on its telescopic end. By adjusting the third electric push rod 44, it can be installed in the inner cavity of the connecting sleeve 43, and the support base 31 can be installed on its telescopic end. Through the mutual telescopic cooperation of the second electric push rod 41 and the third electric push rod 44, the height of the support base 31 can be flexibly adjusted, thereby allowing the limiting ring 36 to be inserted into the inner cavity of the needle coil.

[0036] See Figure 1 - Figure 5 The PLC controller 5 is electrically connected to the positioning component 2, the adjustment component 4, and the control switch group 6. It can easily control the operation of the first electric push rod 21, the second electric push rod 41, and the third electric push rod 44 via the PLC controller 5, thereby adjusting their extension length.

[0037] During operation, before winding the lithium battery, the operator first adjusts the height of the positioning component 2 and inserts the winding needle through one end of the top of the positioning component 2. Then, the base plate 1 is fixed in the designated position. Next, the operation of the adjustment component 4 is controlled by the control switch group 6 via the PLC controller 5, which allows for flexible adjustment of the position of the limiting component 3. This enables the rotating end of the limiting component 3 to be inserted into the other end of the winding needle. At this time, the rotating end of the limiting component 3, the winding needle, and the rotating end of the positioning component 2 are on the same axis. Then, by driving the winding needle, the winding needle can be wound and formed into the positive electrode sheet, negative electrode sheet, and separator. When the lithium battery is wound and formed... At this time, the limiting component 3 and the positioning component 2 can guide and limit the positive electrode sheet, negative electrode sheet and separator, thereby preventing the positive electrode sheet, negative electrode sheet and separator from deviating during winding, thus ensuring the quality of the positive electrode sheet, negative electrode sheet and separator winding. After the lithium battery is wound into shape, the operator can control the adjustment component 4 through the control switch group 6 via the PLC controller 5, so that the adjustment component 4 can drive the limiting component 3 away from one end of the winding needle, thus making it easier for the operator to remove the lithium battery wound on the winding needle. Then, the adjustment component 4 adjusts the limiting component 3 to be inserted into the other end of the winding needle again, and so on, to complete the winding process of the lithium battery.

[0038] The first electric push rod 21 in the positioning assembly 2 can be fixed to the top surface of the base plate 1 via the stabilizing seat 22, and its telescopic end can be installed on the bearing 23. The first support tube 24 can be installed in the inner cavity of the bearing 23 and can also be used to install and fix the positioning ring 25. The first electric push rod 21 can be controlled by the PLC controller 5 via the control switch group 6, so that the height of the positioning ring 25 can be flexibly adjusted. By passing the coil needle through the bearing 23, the first support tube 24 and the positioning ring 25, one end of the positioning ring 25 can limit the winding of the positive electrode, negative electrode and the separator, thereby preventing the positive electrode, negative electrode and the separator from deviating during winding.

[0039] The support seat 31 in the limiting component 3 can be installed at the output end of the adjusting component 4, and the insertion rod 33 can be movably inserted into the insertion hole 32. Then, the shaft 34 can be fixed to one end of the insertion rod 33, and the second support tube 35 with the limiting ring 36 installed can be installed and fixed via ball bearings. Since the other end of the insertion rod 33 is fixedly provided with a baffle 37, and a tension spring 38 is sleeved on the insertion rod 33, and the two ends of the tension spring 38 are respectively connected to the support seat 31 and the baffle 37. Since they are connected, the spring 38 can provide elastic force to the insertion rod 33 towards the positioning component 2 via the baffle 37. This allows the limiting ring 36 to elastically support the wound positive electrode, negative electrode and separator at one end after the winding needle is inserted into the limiting ring 36, thereby preventing the limiting ring 36 from squeezing the positive electrode, negative electrode and separator at one end. At the same time, the limiting ring 36 can rotate, and thus rotates with the positive electrode, negative electrode and separator when they are wound, thereby preventing the material from getting tangled on the limiting ring 36 and ensuring the safety of the material winding.

[0040] By adjusting the second electric push rod 41 in component 4, it can be installed on the top surface of the base plate 1 via the mounting base 42, and the connecting sleeve 43 can be installed on its telescopic end. By adjusting the third electric push rod 44, it can be installed in the inner cavity of the connecting sleeve 43, and the support base 31 can be installed on its telescopic end. Through the mutual telescopic cooperation of the second electric push rod 41 and the third electric push rod 44, the height of the support base 31 can be flexibly adjusted, thereby allowing the limiting ring 36 to be inserted into the inner cavity of the needle coil.

[0041] In summary, this device can guide and limit the positive electrode, negative electrode and separator, thereby preventing them from deviating when they are wrapped together, and thus ensuring the quality of the wrapping process.

[0042] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A precision calibration mechanism for electrode alignment in a lithium battery winding process, comprising a base plate (1), characterized in that: A positioning component (2) is provided on one side of the top surface of the base plate (1), and a limiting component (3) is provided in front of the positioning component (2); The bottom of the limiting component (3) is provided with an adjustment component (4), and the bottom of the adjustment component (4) is connected to the top surface of the base plate (1). The top surface of the base plate (1) and the side of the adjustment component (4) are provided with a PLC controller (5) and a control switch group (6).

2. The electrode alignment precision calibration mechanism for lithium battery winding process according to claim 1, characterized in that: The positioning component (2), the limiting component (3), and the adjusting component (4) are located on the same axis.

3. The electrode alignment precision calibration mechanism for lithium battery winding process according to claim 1, characterized in that: The positioning component (2) includes a first electric push rod (21), the bottom end of which is connected to the top surface of the base plate (1) via a stabilizing seat (22); The telescopic end of the first electric push rod (21) is equipped with a seated bearing (23), and the inner cavity of the seated bearing (23) is through which a first support tube (24) is installed, and a positioning ring (25) is fixedly provided at one end of the first support tube (24).

4. The electrode alignment precision calibration mechanism for lithium battery winding process according to claim 1, characterized in that: The limiting component (3) includes a support base (31), and an insertion hole (32) is provided on the side wall of the support base (31) near the center. An insertion rod (33) is inserted through the inner cavity of the insertion hole (32). A shaft (34) is fixedly connected to one end of the insertion rod (33). A second support tube (35) is installed on the outer side of one end of the shaft (34) through a ball bearing. A limiting ring (36) is fixedly connected to one end of the second support tube (35). A baffle (37) is fixedly provided at the other end of the insertion rod (33), and a tension spring (38) is sleeved on the insertion rod (33). The two ends of the tension spring (38) are respectively connected to the support base (31) and the baffle (37).

5. The electrode alignment precision calibration mechanism for the lithium battery winding process according to claim 4, characterized in that: The inner cavity of the socket (32) has a polygonal shape in frontal view. The inner diameter of the socket (32) is the same as the outer diameter of the plug rod (33), and the two are movably connected.

6. The electrode alignment precision calibration mechanism for lithium battery winding process according to claim 1, characterized in that: The adjustment assembly (4) includes a second electric push rod (41), a mounting base (42) is provided in the middle of the second electric push rod (41), and the bottom of the mounting base (42) is connected to the top surface of the base plate (1). The telescopic end of the second electric push rod (41) is equipped with a connecting sleeve (43), and the inner cavity of the connecting sleeve (43) is fixedly installed with a third electric push rod (44). The telescopic end of the third electric push rod (44) is connected to the bottom surface of the limiting component (3).

7. The electrode alignment precision calibration mechanism for lithium battery winding process according to claim 1, characterized in that: The PLC controller (5) is electrically connected to the positioning component (2), the adjustment component (4), and the control switch group (6).

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