Lithium battery winding machine and battery cell deviation rectifying and feeding mechanism

Abstract

The utility model discloses a lithium battery winding machine and a battery cell deviation rectifying and feeding mechanism. The device comprises a fixed base, a diaphragm feeding assembly, a pole piece deviation rectifying assembly and a limiting platform, the fixed base is fixed to external equipment, the diaphragm feeding assembly is movably arranged on the fixed base, the pole piece deviation rectifying assembly is movably arranged on the diaphragm feeding assembly, and the limiting platform is arranged on the pole piece deviation rectifying assembly; wherein the diaphragm feeding assembly is used for conveying and feeding diaphragms; the pole piece deviation rectifying assembly is used for rectifying and straightening the pole piece on the diaphragm; and the limiting platform is used for bearing and limiting the diaphragms and the pole pieces to reach the feeding position along a specified route. According to the device, the position between the pole piece and the diaphragm can be corrected, the pole piece is placed at the designated position of the diaphragm, the pole piece and the diaphragm can be stably conveyed to the winding mechanism to be accurately wound, the product quality is improved, and the practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery cell preparation, especially to a lithium battery winding machine and a battery cell deviation rectifying feeding mechanism. BACKGROUND

[0002] At present, with the continuous popularization of new energy, lithium batteries are widely used in various fields as renewable energy, and battery cells are also important components in lithium batteries. In the prior art, electrode materials are attached to the separator during the production process, and the battery cell is prepared by winding. However, the existing battery cell winding equipment is prone to deviation when the motor is placed on the separator, and the electrode material cannot be accurately placed on the specified position of the separator, resulting in unstable feeding of the electrode sheet and the separator, further causing the separator and the electrode sheet to be unable to be accurately wound, which reduces the yield and production efficiency.

[0003] The existing related technology cannot accurately place the electrode sheet on the specified position of the separator. INVENTION CONTENTS

[0004] Therefore, it is necessary to provide a lithium battery winding machine and a battery cell deviation rectifying feeding mechanism to at least solve the problem that the feeding mechanism of the lithium battery winding machine in the related art cannot accurately place the electrode sheet on the specified position of the separator.

[0005] In a first aspect, the present application provides a battery cell deviation rectifying feeding mechanism, comprising: a fixed base, a separator feeding assembly, an electrode sheet deviation rectifying assembly, and a limiting platform. The fixed base is fixed to an external device. The separator feeding assembly is movably arranged on the fixed base. The electrode sheet deviation rectifying assembly is movably arranged on the separator feeding assembly. The limiting platform is arranged on the electrode sheet deviation rectifying assembly. The separator feeding assembly is used for conveying and feeding the separator. The electrode sheet deviation rectifying assembly is used for rectifying and aligning the electrode sheet on the separator. The limiting platform is used for carrying and limiting the separator and the electrode sheet to reach the feeding position along a specified route.

[0006] In some embodiments, the separator feeding assembly includes a feeding driving device and a feeding transmission module. The feeding driving device and the feeding transmission module are both arranged on the fixed base. The feeding driving device and the feeding transmission module are in transmission connection. The electrode sheet deviation rectifying assembly and the feeding transmission module are in transmission connection. The feeding driving device drives the electrode sheet deviation rectifying assembly and the limiting platform to move through the feeding transmission module, thereby driving the separator and the electrode sheet of the limiting platform to perform the feeding process.

[0007] In some embodiments, the feeding driving device is a driving motor.

[0008] In some embodiments, the feeding transmission module includes a feeding coupling, a feeding bearing fixing seat, a feeding screw rod, a feeding screw rod nut, a feeding sliding rail, a feeding sliding block, and a feeding moving plate. The feeding bearing fixing seat and the feeding sliding rail are fixed on the fixed base. One end of the feeding coupling is in transmission connection with the feeding driving device, and the other end of the feeding coupling is in transmission connection with the feeding screw rod. The feeding screw rod is rotatably arranged on the feeding bearing fixing seat. The feeding screw rod nut is sleeved on the feeding screw rod and is fixedly connected with the feeding moving plate. The feeding sliding block is slidably arranged on the feeding sliding rail and is fixedly connected with the feeding moving plate. The pole piece deviation correction assembly is arranged on the feeding moving plate. The feeding driving device drives the feeding screw rod nut to move on the feeding screw rod through the feeding bearing fixing seat, thereby driving the feeding sliding block, the feeding moving plate, and the pole piece deviation correction assembly to slide on the feeding sliding rail.

[0009] In some embodiments, the pole piece deviation correction assembly includes a deviation correction driving device and a deviation correction transmission module. The deviation correction driving device and the deviation correction transmission module are arranged on the feeding moving plate. The deviation correction driving device is in transmission connection with the deviation correction transmission module. The limiting platform is in transmission connection with the deviation correction transmission module. The deviation correction driving device drives the limiting platform to move on the feeding moving plate through the deviation correction transmission module.

[0010] In some embodiments, the deviation correction driving device is a driving motor.

[0011] In some embodiments, the deviation correction transmission module includes a deviation correction coupling, a deviation correction bearing fixing seat, a deviation correction screw rod, a deviation correction screw rod nut, a deviation correction sliding rail, and a deviation correction sliding block. The deviation correction driving device and the deviation correction bearing fixing seat are fixed on the fixed base. The deviation correction sliding rail is fixed on the feeding moving plate. One end of the deviation correction coupling is in transmission connection with the deviation correction driving device, and the other end of the deviation correction coupling is in transmission connection with the deviation correction screw rod. The deviation correction screw rod is rotatably arranged on the deviation correction bearing fixing seat. The deviation correction screw rod nut is sleeved on the deviation correction screw rod and is fixedly connected with the limiting platform. The deviation correction sliding block is slidably arranged on the deviation correction sliding rail and is fixedly connected with the limiting platform. The deviation correction driving device drives the deviation correction screw rod nut to move on the deviation correction screw rod through the deviation correction bearing fixing seat, thereby driving the deviation correction sliding block and the limiting platform to slide on the deviation correction sliding rail.

[0012] In some embodiments, the limiting platform comprises a bearing moving plate, a first limiting plate and a second limiting plate, the bearing moving plate is fixedly connected with the deviation correction screw nut and the deviation correction sliding block respectively, the first limiting plate is arranged at one end of the bearing moving plate, and the second limiting plate is arranged on one side of the bearing moving plate, and a diaphragm feeding channel is formed between the bearing moving plate and the first limiting plate and between the bearing moving plate and the second limiting plate.

[0013] In some embodiments, the limiting platform further comprises an auxiliary roller arranged on the feeding moving plate.

[0014] In the second aspect, the application further provides a lithium battery winding machine comprising the cell deviation correction feeding mechanism of the first aspect.

[0015] Compared with the prior art, the lithium battery winding machine and the cell deviation correction feeding mechanism provided by the application have the beneficial effects that: the lithium battery winding machine and the cell deviation correction feeding mechanism are provided, a pole piece deviation correction assembly and a limiting platform are newly added based on the diaphragm feeding assembly, so that the pole piece can be accurately placed on a specified position of the diaphragm, when the pole piece is deviated, the pole piece deviation correction assembly and the limiting platform can correct the position of the pole piece, so that the pole piece returns to the correct position, the feeding mechanism can stably feed the diaphragm and the pole piece, the winding mechanism of the lithium battery winding machine can stably wind, the yield of the cell is improved, the production efficiency of the cell is improved, and the practicability is high. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the embodiment of the application;

[0017] Figure 2 is a schematic diagram of the structure of the embodiment of the application without the first limiting plate;

[0018] Figure 3 is a schematic diagram of the structure of the diaphragm feeding assembly of the embodiment of the application;

[0019] Figure 4 is a schematic diagram of the structure of the pole piece deviation correction assembly of the embodiment of the application.

[0020] REFERENCE SIGNS:

[0021] 100, fixed base;

[0022] 200, diaphragm feeding assembly; 21, feeding driving device; 22, feeding transmission module; 221, feeding coupling; 222, feeding bearing fixed seat; 223, feeding screw rod; 224, feeding screw rod nut; 225, feeding sliding rail; 226, feeding sliding block; 227, feeding moving plate;

[0023] 300, pole piece deviation correction assembly; 31, deviation correction driving device; 32, deviation correction transmission module; 321, deviation correction coupling; 322, deviation correction bearing fixing seat; 323, deviation correction screw rod; 324, deviation correction screw rod nut; 325, deviation correction sliding rail; 326, deviation correction sliding block;

[0024] 400, limiting platform; 41, bearing moving plate; 42, first limiting plate; 43, second limiting plate; 44, auxiliary roller. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] It should be noted that when a component is referred to as "mounted on" another component, it can be directly mounted on the other component or there can be a middle component. When a component is referred to as "provided on" another component, it can be directly provided on the other component or there can be a middle component. When a component is referred to as "fixed on" another component, it can be directly fixed on the other component or there can be a middle component.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0028] Reference Figures 1-4 , the first aspect, the embodiment of the present application provides a kind of electric core deviation correction feeding mechanism, comprising;Fixed base 100, diaphragm feeding assembly 200, pole piece deviation correction assembly 300 and limiting platform 400, fixed base 100 is fixed on external equipment, diaphragm feeding assembly 200 is movably arranged on fixed base 100, pole piece deviation correction assembly 300 is movably arranged on diaphragm feeding assembly 200, limiting platform 400 is arranged on pole piece deviation correction assembly 300;Wherein, diaphragm feeding assembly 200 is used for the transmission of diaphragm feeding;Pole piece deviation correction assembly 300 is used for correcting and straightening the pole piece on diaphragm;Limiting platform 400 is used to carry and limit diaphragm and pole piece along specified route to reach feeding position.

[0029] It should be noted that in this way, by adding the structure design of the pole piece deviation correction assembly 300 and the limiting platform 400 on the basis of the diaphragm feeding assembly 200, the pole piece can be accurately placed on the specified position of the diaphragm. Specifically, when the pole piece is deviated, the pole piece deviation correction assembly 300 can drive the limiting platform 400 to move, thereby changing the relative position of the pole piece and the diaphragm, and then correcting the deviation through the second limiting plate 42 of the limiting platform 400, so that the pole piece returns to the correct position of the diaphragm. Therefore, the feeding mechanism can stably feed the diaphragm and the pole piece, the winding mechanism of the lithium battery winding machine can stably wind, the yield of the battery cell is improved, and the production efficiency of the battery cell is improved.

[0030] In order to realize the stable transmission of the diaphragm, in some optional embodiments, the diaphragm feeding assembly 200 comprises a feeding driving device 21 and a feeding transmission module 22. The feeding driving device 21 and the feeding transmission module 22 are both arranged on the fixed base 100, and the feeding driving device 21 is in transmission connection with the feeding transmission module 22. The pole piece deviation correction assembly 300 is in transmission connection with the feeding transmission module 22. The feeding driving device 21 drives the pole piece deviation correction assembly 300 and the limiting platform 400 to move through the feeding transmission module 22, thereby driving the diaphragm and the pole piece of the limiting platform 400 to perform the feeding process.

[0031] In order to realize the stable transmission of the diaphragm, in some optional embodiments, the feeding driving device 21 is a driving motor, and the feeding driving device 21 adopts the driving motor to have high accuracy.

[0032] In order to realize the stable cooperation of the feeding driving device 21 and the feeding transmission module 22, in some optional embodiments, the feeding transmission module 22 comprises a feeding shaft coupling 221, a feeding bearing fixing seat 222, a feeding lead screw 223, a feeding lead screw nut 224, a feeding sliding rail 225, a feeding sliding block 226 and a feeding moving plate 227. The feeding bearing fixing seat 222 and the feeding sliding rail 225 are both fixed on the fixed base 100. One end of the feeding shaft coupling 221 is in transmission connection with the feeding driving device 21, and the other end of the feeding shaft coupling 221 is in transmission connection with the feeding lead screw 223. The feeding lead screw 223 is rotatably arranged on the feeding bearing fixing seat 222. The feeding lead screw nut 224 is sleeved on the feeding lead screw 223 and is fixedly connected with the feeding moving plate 227. The feeding sliding block 226 is slidably arranged on the feeding sliding rail 225 and is fixedly connected with the feeding moving plate 227. The pole piece deviation correction assembly 300 is arranged on the feeding moving plate 227. The feeding driving device 21 drives the feeding lead screw 223 to rotate on the feeding bearing fixing seat 222, thereby driving the feeding lead screw nut 224 to move on the feeding lead screw 223, and further driving the feeding sliding block 226, the feeding moving plate 227 and the pole piece deviation correction assembly 300 to slide on the feeding sliding rail 225.

[0033] It should be noted that in this way, the feeding shaft coupling 221, the feeding bearing fixing seat 222, the feeding lead screw 223 and the feeding lead screw nut 224 form a stable lead screw module, which has high precision and can be better connected and matched with the driving motor, so as to accurately drive the feeding moving plate 227 and the feeding sliding block 226 to slide on the feeding sliding rail 225, thereby more accurately adjusting the relative position of the pole piece deviation correction assembly 300 and the limiting platform 400.

[0034] In order to realize the deviation correction function of the pole piece on the diaphragm, in some optional embodiments, the pole piece deviation correction assembly 300 includes a deviation correction driving device 31 and a deviation correction transmission module 32, the deviation correction driving device 31 and the deviation correction transmission module 32 are arranged on the feeding moving plate 227, the deviation correction driving device 31 and the deviation correction transmission module 32 are in transmission connection, the limiting platform 400 and the deviation correction transmission module 32 are in transmission connection; wherein the deviation correction driving device 31 drives the limiting platform 400 to move on the feeding moving plate 227 through the deviation correction transmission module 32.

[0035] In some optional embodiments, the deviation correction driving device 31 is a driving motor, and the deviation correction driving device 31 adopts a driving motor with high precision.

[0036] In some optional embodiments, the deviation correction transmission module 32 includes a deviation correction coupling 321, a deviation correction bearing fixing seat 322, a deviation correction lead screw 323, a deviation correction lead screw nut 324, a deviation correction sliding rail 325 and a deviation correction sliding block 326, the deviation correction driving device 31 and the deviation correction bearing fixing seat 322 are both fixed on the fixed base 100, the deviation correction sliding rail 325 is fixed on the feeding moving plate 227, one end of the deviation correction coupling 321 is in transmission connection with the deviation correction driving device 31, the other end of the deviation correction coupling 321 is in transmission connection with the deviation correction lead screw 323, the deviation correction lead screw 323 is rotatably arranged on the deviation correction bearing fixing seat 322, the deviation correction lead screw nut 324 is sleeved on the deviation correction lead screw 323 and is fixedly connected with the limiting platform 400, the deviation correction sliding block 326 is slidably arranged on the deviation correction sliding rail 325 and is fixedly connected with the limiting platform 400; wherein the deviation correction driving device 31 drives the deviation correction lead screw nut 324 to move on the deviation correction lead screw 323 by rotating on the deviation correction bearing fixing seat 322, thereby driving the deviation correction sliding block 326 and the limiting platform 400 to slide on the deviation correction sliding rail 325, the deviation correction coupling 321, the deviation correction bearing fixing seat 322, the deviation correction lead screw 323 and the deviation correction lead screw nut 324 form a lead screw module, which has high transmission precision, thereby better connecting and matching with the driving motor to drive the limiting platform 400 to adjust the position.

[0037] In order to realize the deviation rectification function, in some optional embodiments, the limiting platform 400 comprises a bearing moving plate 41, a first limiting plate 42 and a second limiting plate 43, the bearing moving plate 41 is fixedly connected with the deviation rectification screw nut 324 and the deviation rectification sliding block 326 respectively, the first limiting plate 42 is arranged at the feeding end of the bearing moving plate 41, the second limiting plate 43 is arranged at one side of the bearing moving plate 41, and the diaphragm feeding channel is formed between the bearing moving plate 41 and the first limiting plate 42 and between the bearing moving plate 41 and the second limiting plate 43.

[0038] It should be noted that the diaphragm is preliminarily limited by the first limiting plate 42, the stability of diaphragm conveying is improved, and the error of diaphragm conveying is reduced, and when the pole piece is placed on the diaphragm with an error, the second limiting plate 43 is used to abut against the pole piece, and then the position of the diaphragm is adjusted by the bearing moving plate 41, so that the relative adjustment of the position between the pole piece and the diaphragm is realized.

[0039] In some optional embodiments, the limiting platform 400 further comprises an auxiliary roller 44, the auxiliary roller 44 is arranged on the feeding moving plate 227, and the auxiliary roller 44 is used to make the diaphragm conveying more stable.

[0040] In the second aspect, the application also provides a lithium battery winding machine comprising the cell deviation rectification and feeding mechanism.

[0041] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as the limitation of the present application, and as long as the above embodiments are appropriately changed and changed within the essential spirit range of the present application, the above embodiments fall within the scope of the present application.

Claims

1. A battery cell alignment and feeding mechanism, characterized in that, It includes: a fixed base (100), a diaphragm feeding assembly (200), an electrode alignment assembly (300), and a limiting platform (400). The fixed base (100) is fixed to an external device. The diaphragm feeding assembly (200) is movably mounted on the fixed base (100). The electrode alignment assembly (300) is movably mounted on the diaphragm feeding assembly (200). The limiting platform (400) is mounted on the electrode alignment assembly (300). The diaphragm feeding assembly (200) is used for conveying and feeding the diaphragm; The electrode alignment component (300) is used to align and correct the electrodes on the diaphragm. The limiting platform (400) is used to carry and limit the diaphragm and electrode to arrive at the loading position along a designated route.

2. The cell alignment and feeding mechanism according to claim 1, characterized in that, The diaphragm feeding assembly (200) includes a feeding drive device (21) and a feeding transmission module (22). The feeding drive device (21) and the feeding transmission module (22) are both mounted on the fixed base (100). The feeding drive device (21) and the feeding transmission module (22) are connected in a transmission manner. The electrode correction assembly (300) is connected in a transmission manner to the feeding transmission module (22). The feeding drive device (21) drives the electrode correction assembly (300) and the limiting platform (400) to move through the feeding transmission module (22), thereby driving the diaphragm and electrode on the limiting platform (400) to perform the feeding process.

3. The cell alignment and feeding mechanism according to claim 2, characterized in that, The feeding drive device (21) is a drive motor.

4. The cell alignment and feeding mechanism according to claim 3, characterized in that, The feeding transmission module (22) includes a feeding coupling (221), a feeding bearing fixing seat (222), a feeding screw (223), a feeding screw nut (224), a feeding slide rail (225), a feeding slider (226), and a feeding moving plate (227). The feeding bearing fixing seat (222) and the feeding slide rail (225) are both fixed on the fixed base (100). One end of the feeding coupling (221) is connected to the feeding drive device (21), and the other end of the feeding coupling (221) is connected to the feeding screw (223). The feeding screw (223) is rotatably mounted on the feeding bearing fixing seat (222), and the feeding screw nut (224) is sleeved on the feeding screw. The feeding slider (226) is mounted on the feeding screw (223) and fixedly connected to the feeding moving plate (227). The feeding slide block (226) is slidably mounted on the feeding slide rail (225) and fixedly connected to the feeding moving plate (227). The electrode correction assembly (300) is mounted on the feeding moving plate (227). The feeding drive device (21) rotates on the feeding bearing fixing seat (222) via the feeding screw (223), thereby driving the feeding screw nut (224) to move on the feeding screw (223), and then driving the feeding slider (226), the feeding moving plate (227) and the electrode correction assembly (300) to slide on the feeding slide rail (225).

5. The cell alignment and feeding mechanism according to claim 4, characterized in that, The electrode correction assembly (300) includes a correction drive device (31) and a correction transmission module (32). The correction drive device (31) and the correction transmission module (32) are mounted on the loading moving plate (227). The correction drive device (31) and the correction transmission module (32) are connected in a transmission manner. The limiting platform (400) is connected in a transmission manner to the correction transmission module (32). The correction drive device (31) drives the limiting platform (400) to move on the loading moving plate (227) through the correction transmission module (32).

6. The cell alignment and feeding mechanism according to claim 5, characterized in that, The correction drive device (31) is a drive motor.

7. The cell alignment and feeding mechanism according to claim 6, characterized in that, The correction transmission module (32) includes a correction coupling (321), a correction bearing mounting base (322), a correction lead screw (323), a correction lead screw nut (324), a correction slide rail (325), and a correction slider (326). The correction drive device (31) and the correction bearing mounting base (322) are both fixed on the fixed base (100). The correction slide rail (325) is fixed on the loading moving plate (227). One end of the correction coupling (321) is connected to the correction drive device (31), and the other end of the correction coupling (321) is connected to the correction lead screw (323). The correction lead screw (323) is rotatable. The correction bearing fixing seat (322) is provided with the correction screw nut (324) sleeved on the correction screw (323) and fixedly connected to the limiting platform (400). The correction slider (326) is slidably provided on the correction slide rail (325) and fixedly connected to the limiting platform (400). The correction drive device (31) rotates on the correction bearing fixing seat (322) through the correction screw (323), thereby driving the correction screw nut (324) to move on the correction screw (323), and then driving the correction slider (326) and the limiting platform (400) to slide on the correction slide rail (325).

8. The cell alignment and feeding mechanism according to claim 7, characterized in that, The limiting platform (400) includes a bearing moving plate (41), a first limiting plate (42) and a second limiting plate (43). The bearing moving plate (41) is fixedly connected to the correction screw nut (324) and the correction slider (326) respectively. The first limiting plate (42) is located at the feeding end of the bearing moving plate (41), and the second limiting plate (43) is located on one side of the bearing moving plate (41). A diaphragm feeding channel is formed between the bearing moving plate (41) and the first limiting plate (42) and between the bearing moving plate (41) and the second limiting plate (43).

9. The cell alignment and feeding mechanism according to claim 8, characterized in that, The limiting platform (400) also includes an auxiliary roller (44), which is disposed on the feeding moving plate (227).

10. A lithium battery winding machine, characterized in that, The battery cell correction and feeding mechanism includes any one of claims 1 to 9.

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