A battery pole piece pressing device

Abstract

The present invention discloses a device for pressing a battery electrode sheet, which relates to the technical field of battery electrode sheets. The device comprises a base, a side plate installed on the front of the base, and a transmission structure installed on the outer side of the side plate. The transmission structure internally comprises a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear, and a seventh gear. A motor is installed on the outer side of the first gear, and the bottom of the motor is connected to a placement plate. In the present invention, during the pressing process, the fourth gear drives the first bevel gear to rotate via a cross bar, thereby driving the second bevel gear to rotate. When the second bevel gear rotates, the five-sided rod rotates via a rotating shaft, causing the bottom plate to rotate around the five-sided rod. The cotton pad at the bottom can rub against the top of the battery electrode sheet to prevent wrinkles on the battery electrode sheet, and at the same time can sweep away debris on the top of the battery electrode sheet, so that the battery electrode sheet can be better pressed.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pole pieces, and in particular to a battery pole piece pressing device. Background Art

[0002] The positive and negative electrodes of lithium-ion batteries are coated by applying a mixed slurry onto copper foil or aluminum foil. After coating, the electrodes need to be pressed to reduce their thickness. The purpose of doing this is, firstly, to reduce the internal resistance of the lithium-ion battery; secondly, to increase the capacity of the lithium-ion battery. Because the thickness of the electrode is reduced at the same size, the winding length or the number of stacking layers can be increased.

[0003] The existing battery electrode pressing device needs to roll the battery electrode when processing it to enhance the bonding strength between the active material and the foil. During the rolling process, multiple sets of pressing rollers are used to roll the battery electrode, and then the winding roller winds up the battery electrode. However, the rotation speed of the pressing roller and the winding roller cannot be guaranteed to be consistent, resulting in that the battery electrode is difficult to wind up after rolling. In addition, if the battery electrode has wrinkles before rolling, it will affect the subsequent winding of the battery electrode after rolling. Summary of the Invention

[0004] The purpose of the present invention is to provide a battery pole piece pressing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a battery electrode pressing device, comprising a base, a side plate installed on the front of the base, and a transmission structure installed on the outside of the side plate, the interior of the transmission structure includes a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear and a seventh gear, and a motor is installed on the outside of the first gear, the bottom of the motor is connected to a placement plate, a cross bar is installed on the inside of the fourth gear, and a first helical gear is installed on one end of the cross bar, and a first helical gear is connected to one side of the first helical gear. Two helical gears, and a hollow rotating shaft is installed on the top of the second helical gear, a winding roller is installed on one side of the base, a pentagonal groove is opened on the top of the hollow rotating shaft, the top of the hollow rotating shaft is connected to a top plate, and a lifting cylinder is installed on the top of the top plate, a lifting plate is installed on the top of the lifting cylinder, and a rotating shaft is installed on the bottom of the lifting plate, a five-sided rod is installed on the bottom of the rotating shaft, one end of the five-sided rod is connected to the bottom plate, and a cotton pad is installed on the bottom of the bottom plate, the bottom of the cotton pad is abutted against the battery electrode, and a pressing roller is connected to one side of the seventh gear.

[0006] Optionally, a first transmission wheel is installed on the outer side of the sixth gear, and a transmission belt is installed on the outer side of the first transmission wheel, the inner side of the transmission belt is connected to the second transmission wheel, and a connecting rod is installed on the inner side of the second transmission wheel, one end of the connecting rod is installed with a connecting block, and one end of the connecting rod is connected to a vertical rod, one end of the vertical rod is provided with a groove, and a fixing bolt is installed on the outer side of the vertical rod.

[0007] Optionally, the first bevel gear forms a rotating structure with the fourth gear through a cross bar, and the first bevel gear is connected to the hollow rotating shaft through the second bevel gear.

[0008] Optionally, the five-sided rod passes through the hollow rotating shaft, and the second bevel gear is connected to the bottom plate, and the five-sided rod forms a rotating structure with the lifting plate through the rotating shaft.

[0009] Optionally, the lifting plate and the top plate form a lifting structure through a lifting cylinder, and the lifting plate and the lifting cylinder are fixedly connected.

[0010] Optionally, the connecting block forms a disassembly structure through fixing bolts and connecting rods, and the fixing bolts are threadedly connected to the connecting block and the vertical rod.

[0011] Optionally, the first transmission wheel forms a rotating structure with the side plate through the sixth gear, and the first transmission wheel is connected to the second transmission wheel through a transmission belt.

[0012] Optionally, the cotton pad is in abutment connection with the battery electrode, and the cotton pad is connected to the five-sided rod through the bottom plate.

[0013] Optionally, the outer diameter of the vertical rod is consistent with the outer diameter of the pressing roller.

[0014] The present invention provides a battery electrode pressing device, which has the following beneficial effects:

[0015] 1. In the battery electrode pressing device, during the pressing process, the fourth gear will drive the first bevel gear to rotate through the cross bar, thereby driving the second bevel gear to rotate. When the second bevel gear rotates, the five-sided rod will rotate through the rotating shaft, so that the bottom base plate rotates around the five-sided rod, and the cotton pad at the bottom can rub against the top of the battery electrode to prevent wrinkles on the battery electrode, and at the same time can sweep away the debris on the top of the battery electrode, so that the battery electrode can be better pressed. After the pressing is completed, the lifting cylinder can be started to drive the lifting plate to move upward through the lifting cylinder. The five-sided rod at the bottom of the lifting plate will move upward together in the five-sided groove to increase the height of the cotton pad, which is convenient for the placement of the battery electrode to be separated later.

[0016] 2. The battery electrode pressing device rotates the transmission structure driven by the motor, so that multiple sets of gears rotate, thereby driving the pressing rollers to rotate, and pressing the battery electrode between the two sets of pressing rollers. At the same time, the sixth gear drives the first transmission wheel to rotate, so that the first transmission wheel drives the second transmission wheel to rotate through the transmission belt. When the second transmission wheel rotates, it drives the vertical rod to rotate through the connecting rod, thereby winding the pressed battery electrode. When winding, the rotation speed of the vertical rod is consistent with that of the pressing roller, ensuring that the efficiency of pressing and winding the battery electrode is consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front structural schematic diagram of a battery electrode pressing device according to the present invention;

[0018] Figure 2 This invention is a battery pole piece pressing device Figure 1 A in the middle is an enlarged structural diagram;

[0019] Figure 3 This is a schematic side structural diagram of a battery electrode pressing device according to the present invention;

[0020] Figure 4 This invention is a battery pole piece pressing device Figure 3 The enlarged structural diagram at B in the middle;

[0021] Figure 5 This is a schematic diagram of a top view of the hollow rotating shaft of a battery pole piece pressing device according to the present invention;

[0022] Figure 6 This is a schematic side cross-sectional view of a battery electrode pressing device according to the present invention;

[0023] Figure 7 This is a schematic diagram of the side structure of a side plate of a battery pole piece pressing device of the present invention.

[0024] In the figure: 1. base; 2. side panel; 3. placement plate; 4. motor; 5. transmission structure; 6. first gear; 7. second gear; 8. first transmission wheel; 9. transmission belt; 10. second transmission wheel; 11. third gear; 12. fourth gear; 13. top plate; 14. lifting plate; 15. pressing roller; 16. winding roller; 17. battery electrode; 18. connecting rod; 19. connecting block; 20. vertical rod; 21. groove; 22. fixing bolt; 23. horizontal rod; 24. first bevel gear; 25. second bevel gear; 26. hollow rotating shaft; 27. five-sided rod; 28. lifting cylinder; 29. ​​five-sided groove; 30. fifth gear; 31. bottom plate; 32. cotton pad; 33. sixth gear; 34. seventh gear; 35. rotating shaft. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] See also Figure 1-7The present invention provides a technical solution: a battery electrode pressing device, comprising a base 1, a side plate 2, a placement plate 3, a motor 4, a transmission structure 5, a first gear 6, a second gear 7, a first transmission wheel 8, a transmission belt 9, a second transmission wheel 10, a third gear 11, a fourth gear 12, a top plate 13, a lifting plate 14, a pressing roller 15, a winding roller 16, a battery electrode 17, a connecting rod 18, a connecting block 19, a vertical rod 20, a groove 21, a fixing bolt 22, a cross bar 23, a first bevel gear 24, a second bevel gear 25, a hollow rotating shaft 26, a five-sided rod 27, a lifting cylinder 28, a five-sided groove 29, a fifth gear 30, a bottom plate 31, a cotton pad 32, a sixth gear 33, a seventh gear 34 and a rotating shaft 35. The side plate 2 is installed on the front of the base 1, and the transmission structure 5 is installed on the outer side of the side plate 2. The interior of the transmission structure 5 includes the first gear 6, the second gear 7, the third gear 11, the fourth gear 12, the fifth gear 30 , the sixth gear 33 and the seventh gear 34, and the motor 4 is installed on the outside of the first gear 6, the bottom of the motor 4 is connected to the placement plate 3, the inner side of the fourth gear 12 is installed with a cross bar 23, and one end of the cross bar 23 is installed with a first bevel gear 24, one side of the first bevel gear 24 is connected to the second bevel gear 25, and the top of the second bevel gear 25 is installed with a hollow shaft 26, a winding roller 16 is installed on one side of the base 1, and the top of the hollow shaft 26 is provided with a five-sided groove 29 The top of the hollow rotating shaft 26 is connected to the top plate 13, and the top of the top plate 13 is installed with a lifting cylinder 28, the top of the lifting cylinder 28 is installed with a lifting plate 14, and the bottom of the lifting plate 14 is installed with a rotating shaft 35, and the bottom of the rotating shaft 35 is installed with a five-sided rod 27, one end of the five-sided rod 27 is connected to the bottom plate 31, and the bottom of the bottom plate 31 is installed with a cotton pad 32, the bottom of the cotton pad 32 is in contact with the battery electrode 17, and one side of the seventh gear 34 is connected to the pressing roller 15.

[0029] like Figure 1 and Figure 7 As shown, the first transmission wheel 8 is installed on the outside of the sixth gear 33, and the transmission belt 9 is installed on the outside of the first transmission wheel 8, the second transmission wheel 10 is connected to the inside of the transmission belt 9, and the connecting rod 18 is installed on the inside of the second transmission wheel 10, one end of the connecting rod 18 is installed with a connecting block 19, and one end of the connecting rod 18 is connected to a vertical rod 20, one end of the vertical rod 20 is provided with a groove 21, and a fixing bolt 22 is installed on the outside of the vertical rod 20. The sixth gear 33 can rotate with the first transmission wheel 8, so that the first transmission wheel 8 drives the second transmission wheel 10 to rotate through the transmission belt 9. When the second transmission wheel 10 rotates, it will drive the vertical rod 20 to rotate through the connecting rod 18, thereby winding the pressed battery electrode 17.

[0030] like Figure 3As shown, the first bevel gear 24 forms a rotating structure with the fourth gear 12 through the cross bar 23, and the first bevel gear 24 is connected to the hollow rotating shaft 26 through the second bevel gear 25. The fourth gear 12 can drive the first bevel gear 24 to rotate through the cross bar 23, thereby driving the second bevel gear 25 to rotate. When the second bevel gear 25 rotates, the five-sided rod 27 will rotate together, so that the bottom plate 31 rotates around the five-sided rod 27, and the cotton pad 32 at the bottom can rub against the top of the battery electrode 17.

[0031] like Figure 3 As shown, the five-sided rod 27 passes through the hollow rotating shaft 26, the second bevel gear 25 and is connected to the base plate 31, and the five-sided rod 27 forms a rotating structure with the lifting plate 14 through the rotating shaft 35. The five-sided rod 27 can move vertically in the hollow rotating shaft 26 and the second bevel gear 25.

[0032] like Figure 3 As shown, the lifting plate 14 forms a lifting structure with the top plate 13 through the lifting cylinder 28, and the lifting plate 14 is fixedly connected to the lifting cylinder 28. When the lifting cylinder 28 is started, the lifting plate 14 is driven to move upward by the lifting cylinder 28. The five-sided rod 27 at the bottom of the lifting plate 14 will move upward together in the five-sided groove 29, thereby increasing the height of the cotton pad 32, so that the cotton pad 32 is separated from the battery electrode 17.

[0033] like Figure 1 and Figure 2 As shown, the connecting block 19 forms a disassembly structure with the connecting rod 18 through the fixing bolt 22, and the fixing bolt 22 is threadedly connected to the connecting block 19 and the vertical rod 20. By removing the fixing bolt 22 from the vertical rod 20, the vertical rod 20 and the connecting rod 18 can be separated, thereby removing the rolled-up battery electrode 17.

[0034] like Figure 1 As shown, the first transmission wheel 8 forms a rotating structure with the side plate 2 through the sixth gear 33, and the first transmission wheel 8 is connected to the second transmission wheel 10 through the transmission belt 9, and the first transmission wheel 8 is connected to the vertical rod 20 through the connecting rod 18.

[0035] like Figure 3 and Figure 4 As shown, the cotton pad 32 is abutted against the battery electrode 17 , and the cotton pad 32 is connected to the five-sided rod 27 through the bottom plate 31 , and the cotton pad 32 is installed at the bottom of the bottom plate 31 .

[0036] like Figure 1 As shown, the outer diameter of the vertical rod 20 is consistent with the outer diameter of the pressing roller 15 , so that the rotation speed of the vertical rod 20 is consistent with the rotation speed of the pressing roller 15 .

[0037] In summary, when the battery electrode pressing device is in use, the motor 4 drives the transmission structure 5 to rotate, so that the multiple sets of gears rotate, thereby driving the pressing roller 15 to rotate, and pressing the battery electrode 17 between the two sets of pressing rollers 15. At the same time, the sixth gear 33 drives the first transmission wheel 8 to rotate, so that the first transmission wheel 8 drives the second transmission wheel 10 to rotate through the transmission belt 9. When the second transmission wheel 10 rotates, it drives the vertical rod 20 to rotate through the connecting rod 18, thereby winding the pressed battery electrode 17. After the winding is completed, the fixing bolt 22 can be removed from the vertical rod 20, and the vertical rod 20 can be separated from the connecting rod 18, so as to remove the wound battery electrode 17. During the pressing process, the fourth gear 33 drives the first transmission wheel 8 to rotate, so that the first transmission wheel 8 drives the second transmission wheel 10 to rotate through the transmission belt 9. When the second transmission wheel 10 rotates, it drives the vertical rod 20 to rotate through the connecting rod 18, thereby winding the pressed battery electrode 17. The gear 12 will drive the first bevel gear 24 to rotate through the cross bar 23, thereby driving the second bevel gear 25 to rotate. When the second bevel gear 25 rotates, the five-sided rod 27 will rotate through the rotating shaft 35, so that the bottom base plate 31 rotates around the five-sided rod 27, and the cotton pad 32 at the bottom can rub against the top of the battery electrode 17 to prevent the battery electrode 17 from wrinkling, and at the same time can sweep away the debris on the top of the battery electrode 17, so that the battery electrode 17 can be better pressed. After the pressing is completed, the lifting cylinder 28 can be started, and the lifting cylinder 28 can drive the lifting plate 14 to move upward. The five-sided rod 27 at the bottom of the lifting plate 14 will move upward together in the five-sided groove 29, thereby increasing the height of the cotton pad 32, which is convenient for the placement of the battery electrode 17.

[0038] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A battery electrode pressing device, comprising a base (1), characterized in that: The front of the base (1) is provided with a side plate (2), and the outer side of the side plate (2) is provided with a transmission structure (5), the interior of the transmission structure (5) includes a first gear (6), a second gear (7), a third gear (11), a fourth gear (12), a fifth gear (30), a sixth gear (33) and a seventh gear (34), and the outer side of the first gear (6) is provided with a motor (4), the bottom of the motor (4) is connected to a placement plate (3), and the inner side of the fourth gear (12) is provided with a cross bar (23), and one end of the cross bar (23) is provided with a cross bar (23). A first bevel gear (24) is installed, one side of the first bevel gear (24) is connected to a second bevel gear (25), and a hollow rotating shaft (26) is installed on the top of the second bevel gear (25), a winding roller (16) is installed on one side of the base (1), a five-sided groove (29) is opened on the top of the hollow rotating shaft (26), the top of the hollow rotating shaft (26) is connected to the top plate (13), and a lifting cylinder (28) is installed on the top of the top plate (13), and a lifting plate (14) is installed on the top of the lifting cylinder (28), and the lifting plate (14) is A rotating shaft (35) is installed at the bottom, a five-sided rod (27) is installed at the bottom of the rotating shaft (35), one end of the five-sided rod (27) is connected to a bottom plate (31), and a cotton pad (32) is installed at the bottom of the bottom plate (31), the bottom of the cotton pad (32) is in contact with the battery electrode (17), one side of the seventh gear (34) is connected to a pressing roller (15), the outer side of the sixth gear (33) is installed with a first transmission wheel (8), and the outer side of the first transmission wheel (8) is installed with a transmission belt (9), and the inner side of the transmission belt (9) is connected to a second transmission wheel (17). The invention relates to a transmission wheel (10), and a connecting rod (18) is installed on the inner side of the second transmission wheel (10), one end of the connecting rod (18) is installed with a connecting block (19), and one end of the connecting rod (18) is connected to a vertical rod (20), one end of the vertical rod (20) is provided with a groove (21), and a fixing bolt (22) is installed on the outer side of the vertical rod (20), the first bevel gear (24) forms a rotating structure with the fourth gear (12) through the cross bar (23), and the first bevel gear (24) is connected to the hollow rotating shaft (26) through the second bevel gear (25).

2. The battery electrode pressing device according to claim 1, characterized in that: The five-sided rod (27) passes through the hollow rotating shaft (26), and the second bevel gear (25) is connected to the bottom plate (31). The five-sided rod (27) forms a rotating structure with the lifting plate (14) through the rotating shaft (35).

3. The battery electrode pressing device according to claim 1, characterized in that: The lifting plate (14) forms a lifting structure with the top plate (13) through a lifting cylinder (28), and the lifting plate (14) and the lifting cylinder (28) are fixedly connected.

4. The battery electrode pressing device according to claim 1, characterized in that: The connecting block (19) forms a disassembly structure with the connecting rod (18) through a fixing bolt (22), and the fixing bolt (22) is threadedly connected to the connecting block (19) and the vertical rod (20).

5. The battery electrode pressing device according to claim 1, characterized in that: The first transmission wheel (8) forms a rotating structure with the side plate (2) through the sixth gear (33), and the first transmission wheel (8) is connected to the second transmission wheel (10) through a transmission belt (9).

6. The battery electrode pressing device according to claim 1, characterized in that: The cotton pad (32) is in abutment connection with the battery pole piece (17), and the cotton pad (32) is connected to the five-sided rod (27) through the bottom plate (31).

7. The battery electrode pressing device according to claim 1, characterized in that: The outer diameter of the vertical rod (20) is consistent with the outer diameter of the pressing roller (15).

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