Lithium battery electrode plate roller production process

Abstract

The invention relates to the technical field of lithium battery electrode plate roller production, in particular to a lithium battery electrode plate roller production process which comprises the following steps: step 1, coating an aluminum foil with positive and negative electrode materials and an electrode additive of a lithium battery according to process requirements to form an initial lithium battery electrode plate; 2, placing the lithium battery electrode plate in a roller press, and adjusting the pressure, tension and speed parameters of a roller mechanism on the roller press to enable the lithium battery electrode plate to adapt to the sizes and requirements of the positive and negative electrode plates of the lithium battery; 3, running the roller press, and carrying out multi-pass alternate rolling on the positive and negative pole pieces of the lithium battery through a roller mechanism on the roller press; in the roller production process of the lithium battery electrode plate, multiple times of small-pressure rolling on the lithium battery electrode plate is achieved through the multiple upper pressing rollers and the multiple lower pressing rollers at the roller mechanism, single-channel one-time large-pressure rolling is replaced, and stripping of electrode powder on the lithium battery electrode plate is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery electrode sheet roller production, in particular to a lithium battery electrode sheet roller production process. Background Art

[0002] The lithium battery electrode sheet roller production process refers to the process of compacting lithium battery electrode sheets that have been coated and dried to a certain degree through rollers to obtain electrodes that meet design requirements. During the rolling process, the electrode sheets coated with particle coatings on both sides are fed into the gap between the two rollers, and the coating is compacted under the action of the roller line load.

[0003] Currently, during the production of electrode sheets, which are rolled between two large rollers, the electrode powder on the electrode sheet is easily subjected to instantaneous impact during the rolling process, causing the electrode powder to peel off the electrode sheet. The peeled electrode powder adheres to the rollers, causing the residual electrode powder to easily wear the rollers during the rolling of subsequent electrode sheets, while also affecting the rolling quality of the electrode sheets. To address this issue, we propose a rolling production process for lithium battery electrode sheets. Summary of the Invention

[0004] The purpose of the present invention is to provide a lithium battery electrode sheet roller production process to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a lithium battery electrode sheet roll production process, comprising the following steps: Step 1: Coating the positive and negative electrode materials and electrode additives of the lithium battery on aluminum foil according to the process requirements to form the initial lithium battery electrode sheet; Step 2: Place the lithium battery electrode sheet in a roller press and adjust the pressure, tension and speed parameters of the roller mechanism on the roller press to adapt it to the size and requirements of the positive and negative electrode sheets of the lithium battery; Step 3: The roller press is operated, and the roller mechanism on the roller press performs multiple alternate rolling operations on the positive and negative electrodes of the lithium battery, so that the active material reacts physically with the electrode additives to form a dense structure and achieve the compaction thickness required by the process.

[0006] Furthermore, the rolling mechanism includes a support frame, an upper pressing roller, a lower pressing roller, a pushing connection mechanism and an electrode powder removal mechanism. The support frames are provided with two, and the two support frames are respectively arranged on both sides of the lithium battery electrode sheet. The upper pressing roller and the lower pressing roller form a group and roll the lithium battery electrode sheet, and a plurality of upper pressing rollers and lower pressing rollers are evenly spaced at the two support frames, and the upper pressing rollers and the lower pressing rollers at the two support frames are staggered. The pushing connection mechanism is arranged on the supporting frame, and the pushing connection mechanism is used to synchronously drive the multiple upper pressure rollers and the lower pressure roller at the supporting frame. A synchronous driving mechanism is also provided between the two supporting frames, and the synchronous driving mechanism respectively drives the upper pressure rollers and the lower pressure rollers at the two supporting frames in synchronous reverse directions; The electrode powder removing mechanism is arranged at the supporting frame, and the electrode powder removing mechanism cooperates with the pushing connection mechanism to collect the electrode powder on the outer sides of the upper pressing roller and the lower pressing roller.

[0007] Furthermore, the pushing connection mechanism includes a housing, a pushing screw, a rotating member, a rotating member, a guide member and a rotating shaft. There are multiple housing shells, and the multiple housing shells are fixedly mounted on the support frame. The electrode powder removal mechanism is connected to the multiple housing shells. The pushing screw passes through one side of the housing shell, and the rotating member is arranged on the outside of the housing shell. The rotating member is threadedly connected to the pushing screw, and the rotating member is mounted on the support frame. The rotating member is used to synchronously drive the multiple rotating members. An accommodating cavity is provided inside the accommodating shell, one end of the pushing screw located inside the accommodating cavity is connected to the guide member, one end of the rotating shaft is rotatably connected to the guide member, and the upper pressure roller or the lower pressure roller is fixedly sleeved on the outside of the rotating shaft.

[0008] Furthermore, the rotating part includes a rotating sleeve, a protective tube and a limit plate. One end of the rotating sleeve is rotatably connected to the containing shell, and an internal thread is provided inside the rotating sleeve. The pushing screw is threadedly connected to the rotating sleeve. The limit plate is fixedly installed on the outside of one end of the pushing screw. The protective tube is slidably sleeved on the outside of the limit plate, and the protective tube is fixedly connected to the containing shell through a connecting bracket provided on the outside. Through the rotating part provided, the pushing screw is driven.

[0009] Furthermore, the guide member includes a guide block, a connecting seat and a guide rod, one end of the guide block is fixedly connected to the pushing screw, a guide cavity is provided on the side of the guide block away from the pushing screw, the connecting seat is provided at the guide cavity, two guide rods are provided, and the two guide rods are respectively fixedly mounted on the outside of the connecting seat, the guide block is provided with two guide bevels communicating with the guide cavity, and the guide rods slide through the guide bevels; Two limiting L-shaped grooves communicating with the accommodating cavity are provided inside the accommodating shell, and one end of the guide rod is slidably connected to the limiting L-shaped groove; The rotating shaft passes through the guide cavity, and is rotatably connected to the connecting seat through a bearing seat, and the guiding member is provided to guide the rotating shaft.

[0010] Furthermore, a dust suction cavity is provided inside the accommodating shell, and a plurality of dust suction ports connected to the dust suction cavity are provided inside the accommodating shell. A rotating rod is provided at the dust suction port, and a plurality of rubber scrapers are fixed at equal distances on the outside of the rotating rod. A positioning piece is provided at one end of the accommodating shell, and a synchronization piece for synchronously driving the plurality of positioning pieces is provided on the supporting frame. The rubber scrapers are provided to achieve the function of coordinated scraping of the electrode powder on the upper pressure roller or the lower pressure roller.

[0011] Furthermore, a plurality of through holes communicating with the dust collection cavity are provided inside the accommodating shell, and static elimination components are provided at the through holes.

[0012] Furthermore, the static electricity elimination component includes a micro static electricity removal rod, a connecting spring and a connecting tube. The micro static electricity removal rod is located at the through hole, and one end of the micro static electricity removal rod located inside the dust suction chamber is fixedly connected to the connecting spring, and the other end of the connecting spring is fixedly connected to the connecting tube. The connecting tube is fixedly installed inside the dust suction chamber, and the micro static electricity removal rod is slidably connected to the connecting tube. Through the provided static electricity elimination component, the static electricity on the upper pressure roller or the lower pressure roller can be removed.

[0013] Furthermore, the electrode powder removal mechanism includes a branch pipe, a collection box and a dust suction pump. The branch pipe is installed on the support frame and is provided with multiple connection ends. The multiple connection ends are respectively connected to adjacent containing shells. The other end of the branch pipe is connected to the collection box, and the dust suction pump input end is connected to the collection box. Through the provided electrode powder removal mechanism, the electrode powder on the upper pressure roller and the lower pressure roller can be effectively removed.

[0014] Furthermore, the synchronous drive mechanism includes a synchronous rod, a base plate, a driving member, an upper bevel gear, a lower bevel gear, a first rotating bevel gear and a second rotating bevel gear, the synchronous rods are provided in plurality, and the plurality of synchronous rods are arranged corresponding to the positions of each group of upper pressure rollers and lower pressure rollers, the base plate is fixedly installed at the bottom between the two supporting frames, the driving members are provided with two, and the two driving members respectively drive the two rows of synchronous rods, the upper bevel gear and the lower bevel gear are respectively fixedly installed on the synchronous rod, and the upper bevel gear is meshed with the first rotating bevel gear, and the lower bevel gear is meshed with the second rotating bevel gear, the first rotating bevel gear is fixedly installed on the rotating shaft of the upper pressure roller, and the second rotating bevel gear is fixedly installed on the rotating shaft of the lower pressure roller, and the push connection mechanism is provided, thereby realizing the function of synchronously driving the plurality of upper pressure rollers and the lower pressure roller.

[0015] The present invention has at least the following beneficial effects: 1. During the rolling process of the lithium battery electrode sheet of the present invention, multiple upper and lower pressing rollers in the rolling mechanism are used to achieve multiple passes of small pressure rolling on the lithium battery electrode sheet, replacing a single pass of high pressure rolling, effectively reducing the peeling of electrode powder on the lithium battery electrode sheet and further improving the production quality of the lithium battery electrode sheet; 2. The multiple groups of upper and lower pressure rollers in the rolling mechanism of the present invention can not only cooperate with each other to stably roll the lithium battery electrode sheets, but also can regularly remove the dust adhering to the multiple upper and lower pressure rollers, further keeping the rolling surfaces of the upper and lower pressure rollers clean, thereby achieving effective protection of the upper and lower pressure rollers, and further improving the production efficiency of lithium battery electrode sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side view of the overall structure of the present invention; Figure 3 This is a structural diagram of the synchronous drive mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the driving member of the present invention; Figure 5 This is a schematic diagram of the structure of the rotating part of the present invention; Figure 6 This is a schematic diagram of the support frame structure of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of area A in the middle; Figure 8 This is a schematic diagram of the branch pipe structure of the present invention; Figure 9 This is a schematic diagram of the structure of the upper pressing roller of the present invention; Figure 10 This is a schematic diagram of the containment shell structure of the present invention; Figure 11 This is a schematic diagram of the cross-sectional structure of the containment shell of the present invention; Figure 12 For the present invention Figure 11 Schematic diagram of the enlarged structure of the middle B area; Figure 13 This is a schematic structural diagram of the guide block of the present invention; Figure 14 This is a schematic side sectional structural diagram of the guide block of the present invention; Figure 15 This is a structural schematic diagram of the connecting seat of the present invention.

[0017] In the figure: 1-roller press; 2-roller mechanism; 3-support frame; 4-upper pressure roller; 5-lower pressure roller; 6-pushing connecting mechanism; 61-accommodating shell; 611-accommodating cavity; 612-limiting L-shaped groove; 613-dust suction cavity; 614-dust suction port; 615-through hole; 62-pushing screw; 63-rotating member; 631-rotating sleeve; 632-protective tube; 633-limiting plate; 64-rotating member; 65-guide member; 651-guide block; 6511-guide cavity; 6512-guide bevel; 652-connecting seat; 653-guide rod; 66-rotating shaft; 7-electrode Powder removal mechanism; 71-branch pipe; 72-collection box; 73-dust suction pump; 8-synchronous drive mechanism; 81-synchronous rod; 82-base plate; 83-driving member; 84-upper bevel gear; 85-lower bevel gear; 86-first rotating bevel gear; 87-second rotating bevel gear; 9-rotating rod; 91-rubber scraper; 92-positioning member; 921-positioning gear; 922-outer gear ring; 93-synchronizing member; 931-rotating gear; 932-synchronous belt; 933-driving motor; 10-static elimination member; 101-micro static elimination rod; 102-connecting spring; 103-connecting pipe. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1 A lithium battery electrode sheet roller production process comprises the following steps: Step 1: The positive and negative electrode materials of the lithium battery and the electrode additives are coated on the aluminum foil according to the process requirements to form the initial lithium battery electrode sheet. The electrode additives can be formed by mixing materials such as a conductive agent and a binder. Of course, it can also be formed by mixing other materials. Step 2: Place the lithium battery electrode sheet in the roller press 1, and adjust the pressure, tension and speed parameters of the roller mechanism 2 on the roller press 1 to adapt it to the size and requirements of the positive and negative electrode sheets of the lithium battery; Step 3: The roller press 1 is in operation, and the roller mechanism 2 on the roller press 1 performs multiple alternate rolling operations on the positive and negative electrodes of the lithium battery, so that the active material reacts physically with the electrode additives to form a dense structure and achieve the compaction thickness required by the process.

[0020] See also Figures 1 to 6The rolling mechanism 2 includes a support frame 3, an upper pressing roller 4, a lower pressing roller 5, a pushing connection mechanism 6 and an electrode powder removal mechanism 7. There are two support frames 3, and the two support frames 3 are respectively arranged on both sides of the lithium battery electrode sheet. The upper pressing roller 4 and the lower pressing roller 5 form a group and roll the lithium battery electrode sheet, and multiple upper pressing rollers 4 and lower pressing rollers 5 are evenly spaced at the two support frames 3. The upper pressing rollers 4 and the lower pressing rollers 5 at the two support frames 3 are staggered. The push connection mechanism 6 is provided on the support frame 3, and the push connection mechanism 6 is used to synchronously drive the multiple upper pressure rollers 4 and the lower pressure rollers 5 at the support frame 3. A synchronous drive mechanism 8 is also provided between the two support frames 3, and the synchronous drive mechanism 8 respectively drives the upper pressure rollers 4 and the lower pressure rollers 5 at the two support frames 3 in synchronous reverse directions; The electrode powder removing mechanism 7 is arranged at the supporting frame 3 , and the electrode powder removing mechanism 7 cooperates with the pushing connection mechanism 6 to collect the electrode powder outside the upper pressing roller 4 and the lower pressing roller 5 .

[0021] The pushing connection mechanism 6 includes a housing 61, a pushing screw 62, a rotating member 63, a rotating member 64, a guide member 65 and a rotating shaft 66. There are multiple housing shells 61, and the multiple housing shells 61 are fixedly mounted on the support frame 3. The electrode powder removal mechanism 7 is connected to the multiple housing shells 61. The pushing screw 62 passes through one side of the housing shell 61, and the rotating member 63 is arranged on the outside of the housing shell 61. The rotating member 63 is threadedly connected to the pushing screw 62. The rotating member 64 is mounted on the support frame 3 and is used to synchronously drive the multiple rotating members 63. An accommodating cavity 611 is provided inside the accommodating shell 61, and one end of the pushing screw 62 located inside the accommodating cavity 611 is connected to the guide member 65, and one end of the rotating shaft 66 is rotatably connected to the guide member 65, and the upper pressure roller 4 or the lower pressure roller 5 is fixedly sleeved on the outside of the rotating shaft 66.

[0022] See also Figure 5 and Figures 10 and 11 The rotating member 63 includes a rotating sleeve 631, a protective tube 632 and a limiting plate 633. One end of the rotating sleeve 631 is rotatably connected to the accommodating shell 61, and an internal thread is provided inside the rotating sleeve 631. The pushing screw 62 is threadedly connected to the rotating sleeve 631. The limiting plate 633 is fixedly installed on the outside of one end of the pushing screw 62. The protective tube 632 is slidably sleeved on the outside of the limiting plate 633, and the protective tube 632 is fixedly connected to the accommodating shell 61 through a connecting bracket provided on the outside.

[0023] As a further supplementary explanation, the rotating member 64 includes a rotating gear, a synchronous gear chain, a driving gear and an active motor. There are multiple synchronous rotating gears, and the multiple synchronous gears are respectively fixedly sleeved on multiple rotating sleeves 631 on the support frame 3. The synchronous gear chain is used to synchronize the transmission of the multiple rotating gears. The active motor is fixedly mounted on the support frame 3, and the output end of the active motor is fixedly connected to the driving gear, and the driving gear is transmission-connected to the synchronous gear chain. Specific implementation process: When the multiple rotating sleeves 631 on each supporting frame 3 are driven synchronously, the active motor is operated to make the active gear run. When the active gear rotates, the multiple rotating gears are driven to rotate synchronously through the synchronous gear chain. When the multiple rotating gears rotate synchronously, the multiple rotating sleeves 631 are further rotated relative to one end of the outer side of the accommodating shell 61. When the rotating sleeve 631 rotates, it provides driving force for pushing the screw 62. Since the pushing screw 62 is limited by the limiting plate 633 and the protective tube 632, one end of the pushing screw 62 moves relative to the accommodating shell 61. Then, when the pushing screw 62 moves, the guide member 65 is driven to move synchronously.

[0024] See also Figures 11 to 15 , the guide member 65 includes a guide block 651, a connecting seat 652 and a guide rod 653. One end of the guide block 651 is fixedly connected to the pushing screw 62. In this embodiment, the guide block 651 is slidably connected to the accommodating cavity 611, and the two ends of the guide block 651 are respectively chamfered. A guide cavity 6511 is provided on the side of the guide block 651 away from the pushing screw 62. The connecting seat 652 is provided at the guide cavity 6511. There are two guide rods 653, which are respectively fixedly mounted on the outside of the connecting seat 652. Two guide oblique openings 6512 communicating with the guide cavity 6511 are provided on the guide block 651. The guide rod 653 slides through the guide oblique openings 6512. Two limiting L-shaped grooves 612 are provided inside the accommodating shell 61 and communicate with the accommodating cavity 611. One end of the guide rod 653 is slidably connected to the limiting L-shaped groove 612. That is, the limiting L-shaped groove 612 is composed of a horizontal end and a vertical end. The limiting L-shaped groove 612 and the guiding bevel 6512 are used to limit the guide rod 653. The rotating shaft 66 passes through the guide cavity 6511 and is rotatably connected to the connecting seat 652 via a bearing seat. Specific implementation process: In the present invention, the multiple upper pressing rollers 4 and the lower pressing rollers 5 on the two support frames 3 roll the lithium battery electrode sheets alternately, that is, when the dust on the rolling surfaces of the multiple upper pressing rollers 4 and the lower pressing rollers 5 on one of the support frames 3 needs to be cleaned, the multiple upper pressing rollers 4 and the lower pressing rollers 5 on the other set of support frames roll the lithium battery electrode sheets with each other; At the same time, in the present invention, each set of upper pressing rollers 4 and lower pressing rollers 5 on the two supporting frames 3 is preferably provided with three sets; When the dust on the multiple upper pressure rollers 4 and the lower pressure roller 5 on the support frame 3 is cleaned, the rotating member 63 runs, so that the multiple rotating sleeves 631 on the support frame 3 rotate synchronously. When the rotating sleeve 631 rotates, the screw 62 is pushed to move along the accommodating cavity 611. When the screw 62 is pushed to move, the guide block 651 is synchronously pushed to move along the accommodating cavity 611. The guide block 651 is further pushed by the connecting seat 652 to move along the opening of the accommodating cavity 611 under the limiting action of the guide bevel 6512 and the limiting L-shaped groove 612 until the upper pressure roller 4 or the lower pressure roller 5 on the rotating shaft 66 moves to the outside of the support frame 3, that is, above or below the lithium battery electrode sheet. When the screw 62 is pushed and moved continuously, the two guide rods 653 at the guide block 651 move to the vertical end of the limiting L-shaped groove 612. As the guide block 651 and the guide bevel 6512 thereon continue to move, the connecting seat 652 further drives the rotating shaft 66 to move vertically upward or vertically downward relative to the limiting L-shaped groove 612, that is, the rotating shaft 66 drives the upper pressing roller 4 to move vertically downward along the lithium battery electrode sheet, and the rotating shaft 66 at the lower pressing roller 5 drives the lower pressing roller 5 to move vertically upward along the lithium battery electrode sheet, that is, the two upper pressing rollers 4 and the lower pressing roller 5 move synchronously along the direction of the lithium battery electrode sheet until they are in contact with the lithium battery electrode sheet and apply a certain roller pressure, thereby achieving continuous and stable rolling of the lithium battery electrode sheet.

[0025] See also Figures 8 to 15 A dust suction cavity 613 is also provided inside the accommodating shell 61. A plurality of dust suction ports 614 connected to the dust suction cavity 613 are provided inside the accommodating shell 61. A rotating rod 9 is provided at the dust suction port 614. A plurality of rubber scrapers 91 are fixed at equal distances on the outside of the rotating rod 9. A positioning member 92 is provided at one end of the accommodating shell 61, and a synchronization member 93 for synchronously driving the plurality of positioning members 92 is provided on the supporting frame 3.

[0026] As a supplementary explanation, the positioning member 92 includes a positioning gear 921 and an outer gear ring 922. There are multiple positioning gears 921, each of which is fixedly mounted on one end of the rotating rod 9. The outer gear ring 922 is rotatably connected to one end of the accommodating shell 61, and the outer gear ring 922 is meshed with the multiple positioning gears 921. The synchronous member 93 includes a rotating gear 931, a synchronous belt 932, and a drive motor 933. There are multiple rotating gears 931, each of which is fixedly connected to one end of a rotating rod 9 at each accommodating shell 61. The synchronous belt 932 is used to synchronously drive the multiple rotating gears 931. The drive motor 933 is mounted on the support frame 3 and is used to drive one of the rotating gears 931. Specific implementation process: When the upper pressure roller 4 or the lower pressure roller 5 at the accommodating shell 61 moves completely to the inside of the accommodating cavity 611 along with the rotating rod 9, the corresponding driving motor 933 on the supporting frame 3 runs, so that one of the rotating gears 931 drives the remaining multiple rotating gears 931 to rotate synchronously through the synchronous belt 932. When the remaining multiple rotating gears 931 rotate, the rotating rods 9 at the multiple accommodating shells 61 on the supporting frame 3 further rotate synchronously under the connection action of the positioning gear 921 and the outer gear ring 922. At this time, the multiple rubber scrapers 91 at the accommodating shell 61 rotate synchronously. When the rubber scraper 91 rotates, the electrode powder and other dust contained on the outside of the upper pressure roller 4 or the lower pressure roller 5 inside the accommodating shell 61 is scraped off, and at the same time, the upper pressure roller 4 or the lower pressure roller 5 is driven to rotate relative to the connecting seat 652 through the rotating shaft 66, thereby achieving the effect of fully cooperating in scraping off the dust on the surface of the pressure roller.

[0027] See also Figures 11 to 13 A plurality of through holes 615 communicating with the dust collecting cavity 613 are provided inside the accommodating shell 61 , and static elimination components 10 are provided at the through holes 615 .

[0028] The static eliminator 10 includes a micro static eliminator rod 101, a connecting spring 102, and a connecting tube 103. The micro static eliminator rod 101 is located at the through hole 615, and one end of the micro static eliminator rod 101 located inside the dust collection chamber 613 is fixedly connected to the connecting spring 102. The other end of the connecting spring 102 is fixedly connected to the connecting tube 103. The connecting tube 103 is fixedly installed inside the dust collection chamber 613, and the micro static eliminator rod 101 and the connecting tube 103 are slidably connected. That is, in the present invention, when the upper pressing roller 4 or the lower pressing roller 5 rotates relative to the interior of the accommodating cavity 611, the micro static removal rod 101 simultaneously removes static electricity from the upper pressing roller 4 or the lower pressing roller 5; The electrode powder removal mechanism 7 includes a branch pipe 71, a collection box 72, and a dust suction pump 73. The branch pipe 71 is mounted on the support frame 3 and is provided with multiple connection ends, each of which is connected to a neighboring housing 61. The other end of the branch pipe 71 is connected to the collection box 72, and the input end of the dust suction pump 73 is connected to the collection box 72. Specifically: when the dust on the upper pressure roller 4 or the lower pressure roller 5 is to be removed, the dust suction pump 73 is operated, thereby forming a negative pressure in the accommodating cavity 611 inside the multiple accommodating shells 61 through the branch pipe 71, and the dust on the rotating upper pressure roller 4 or the lower pressure roller 5 is fully removed through the dust suction cavity 613 and the dust suction port 614.

[0029] See also Figures 4 to 9 The synchronous drive mechanism 8 includes a synchronization rod 81, a base plate 82, a driving member 83, an upper bevel gear 84, a lower bevel gear 85, a first rotating bevel gear 86 and a second rotating bevel gear 87. There are multiple synchronization rods 81, and multiple synchronization rods 81 are set corresponding to the position of each group of upper pressure rollers 4 and lower pressure rollers 5. The base plate 82 is fixedly mounted on the bottom between the two supporting frames 3. There are two driving members 83, and the two driving members 83 respectively drive the two rows of synchronization rods 81. The upper bevel gear 84 and the lower bevel gear 85 are respectively fixedly mounted on the synchronization rod 81, and the upper bevel gear 84 is meshed with the first rotating bevel gear 86, and the lower bevel gear 85 is meshed with the second rotating bevel gear 87. The first rotating bevel gear 86 is fixedly mounted on the rotating shaft 66 of the upper pressure roller 4, and the second rotating bevel gear 87 is fixedly mounted on the rotating shaft 66 of the lower pressure roller 5.

[0030] Specific implementation process: When the cleaned upper pressing roller 4 and the lower pressing roller 5 move synchronously toward each other along the lithium battery electrode sheet and roll-press the lithium battery electrode sheet, the first rotating bevel gear 86 at the upper pressing roller 4 engages with the upper bevel gear 84, and the second rotating bevel gear 87 engages with the lower bevel gear 85, so that the upper pressing roller 4 and the lower pressing roller 5 rotate synchronously in opposite directions, thereby achieving the effect of stable rolling of the lithium battery electrode sheet.

[0031] Example 2 See also Figure 4 and Figure 9 , Example 2 is a further supplementary explanation of Example 1, specifically: the driving member 83 includes a motor and a gear assembly; Thus, the gear assembly drives the multiple synchronization rods 81 to rotate synchronously through the drive of the motor. When the synchronization rods 81 rotate, the upper bevel gear 84 and the lower bevel gear 85 thereon are further synchronized and rotate in the same direction.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery electrode sheet roller production process, characterized in that: The following steps are involved: Step 1: Coating the positive and negative electrode materials and electrode additives of the lithium battery on aluminum foil according to the process requirements to form the initial lithium battery electrode sheet; Step 2: placing the lithium battery electrode sheet in a roller press (1), and adjusting the pressure, tension and speed parameters of the roller mechanism (2) on the roller press (1) to adapt it to the size and requirements of the positive and negative electrode sheets of the lithium battery; Step 3: The roller press (1) is operated, and the roller mechanism (2) on the roller press (1) performs multiple alternate rolling operations on the positive and negative electrodes of the lithium battery, so that the active material reacts physically with the electrode additives to form a dense structure, thereby achieving the compaction thickness required by the process.

2. The lithium battery electrode sheet roll production process according to claim 1, characterized in that: The rolling mechanism (2) comprises a support frame (3), an upper pressing roller (4), a lower pressing roller (5), a pushing connection mechanism (6) and an electrode powder removal mechanism (7), wherein two support frames (3) are provided, and the two support frames (3) are respectively arranged on both sides of the lithium battery electrode sheet, the upper pressing roller (4) and the lower pressing roller (5) form a group and roll the lithium battery electrode sheet, and a plurality of upper pressing rollers (4) and lower pressing rollers (5) are evenly spaced at the two support frames (3), and the upper pressing rollers (4) and the lower pressing rollers (5) at the two support frames (3) are staggered. The pushing connection mechanism (6) is arranged on the support frame (3), and the pushing connection mechanism (6) is used to synchronously drive the plurality of upper pressure rollers (4) and lower pressure rollers (5) at the support frame (3). A synchronous driving mechanism (8) is also arranged between the two support frames (3), and the synchronous driving mechanism (8) respectively drives the upper pressure rollers (4) and lower pressure rollers (5) at the two support frames (3) in synchronous reverse directions. The electrode powder removal mechanism (7) is arranged at the support frame (3), and the electrode powder removal mechanism (7) cooperates with the pushing connection mechanism (6) to collect the electrode powder outside the upper pressing roller (4) and the lower pressing roller (5).

3. The lithium battery electrode sheet roll production process according to claim 2, characterized in that: The pushing connection mechanism (6) includes a housing shell (61), a pushing screw (62), a rotating member (63), a rotating member (64), a guide member (65) and a rotating shaft (66), wherein the housing shell (61) is provided in plurality, and the plurality of housing shells (61) are fixedly mounted on the support frame (3), and the electrode powder removal mechanism (7) is connected to the plurality of housing shells (61), the pushing screw (62) passes through one side of the housing shell (61), and the rotating member (63) is arranged outside the housing shell (61), the rotating member (63) is threadedly connected to the pushing screw (62), the rotating member (64) is mounted on the support frame (3), and the rotating member (64) is used to synchronously drive the plurality of rotating members (63); An accommodating cavity (611) is provided inside the accommodating shell (61), one end of the pushing screw (62) located inside the accommodating cavity (611) is connected to the guide member (65), one end of the rotating shaft (66) is rotatably connected to the guide member (65), and the upper pressing roller (4) or the lower pressing roller (5) is fixedly sleeved on the outside of the rotating shaft (66).

4. The lithium battery electrode sheet roll production process according to claim 3, characterized in that: The rotating member (63) comprises a rotating sleeve (631), a protective tube (632) and a limiting plate (633); one end of the rotating sleeve (631) is rotatably connected to the accommodating shell (61), and an internal thread is provided inside the rotating sleeve (631); the pushing screw (62) is threadedly connected to the rotating sleeve (631); the limiting plate (633) is fixedly mounted on the outside of one end of the pushing screw (62); the protective tube (632) is slidably sleeved on the outside of the limiting plate (633), and the protective tube (632) is fixedly connected to the accommodating shell (61) via a connecting bracket provided on the outside.

5. The lithium battery electrode sheet roller production process according to claim 3, characterized in that: The guide member (65) includes a guide block (651), a connecting seat (652) and a guide rod (653), one end of the guide block (651) is fixedly connected to the push screw (62), a guide cavity (6511) is provided on the side of the guide block (651) away from the push screw (62), the connecting seat (652) is arranged at the guide cavity (6511), two guide rods (653) are provided, and the two guide rods (653) are respectively fixedly installed on the outside of the connecting seat (652), the guide block (651) is provided with two guide bevels (6512) connected to the guide cavity (6511), and the guide rods (653) slide through the guide bevels (6512); Two limiting L-shaped grooves (612) communicating with the accommodating cavity (611) are provided inside the accommodating shell (61), and one end of the guide rod (653) is slidably connected to the limiting L-shaped groove (612); The rotating shaft (66) passes through the guide cavity (6511), and the rotating shaft (66) is rotatably connected to the connecting seat (652) via a bearing seat.

6. The lithium battery electrode sheet roller production process according to claim 3, characterized in that: A dust collection cavity (613) is further provided inside the accommodating shell (61), and a plurality of dust collection ports (614) in communication with the dust collection cavity (613) are provided inside the accommodating shell (61). A rotating rod (9) is provided at the dust collection port (614), and a plurality of rubber scrapers (91) are fixed at equal distances outside the rotating rod (9). A positioning member (92) is provided at one end of the accommodating shell (61), and a synchronizing member (93) for synchronously driving the plurality of positioning members (92) is provided on the supporting frame (3).

7. The lithium battery electrode sheet roller production process according to claim 6, characterized in that: A plurality of through holes (615) communicating with the dust collection cavity (613) are provided inside the accommodating shell (61), and static elimination components (10) are provided at the through holes (615).

8. The lithium battery electrode sheet roller production process according to claim 7, characterized in that: The static elimination element (10) comprises a micro static elimination rod (101), a connecting spring (102) and a connecting tube (103); the micro static elimination rod (101) is located at the through hole (615); one end of the micro static elimination rod (101) located inside the dust collection cavity (613) is fixedly connected to the connecting spring (102); the other end of the connecting spring (102) is fixedly connected to the connecting tube (103); the connecting tube (103) is fixedly installed inside the dust collection cavity (613), and the micro static elimination rod (101) is slidably connected to the connecting tube (103).

9. The lithium battery electrode sheet roll production process according to claim 2, characterized in that: The electrode powder removal mechanism (7) comprises a branch pipe (71), a collection box (72) and a dust suction pump (73). The branch pipe (71) is mounted on the support frame (3), and a plurality of connection ends are provided on the branch pipe (71). The plurality of connection ends are respectively connected to adjacent accommodating shells (61). The other end of the branch pipe (71) is connected to the collection box (72), and the input end of the dust suction pump (73) is connected to the collection box (72).

10. The lithium battery electrode sheet roll production process according to claim 2, characterized in that: The synchronous drive mechanism (8) includes a synchronous rod (81), a bottom plate (82), a driving member (83), an upper bevel gear (84), a lower bevel gear (85), a first rotating bevel gear (86) and a second rotating bevel gear (87). The synchronous rod (81) is provided in plurality, and the plurality of synchronous rods (81) are provided corresponding to the position of each group of upper pressure rollers (4) and lower pressure rollers (5). The bottom plate (82) is fixedly installed at the bottom between the two support frames (3). The driving member (83) is provided in two pieces, and the two driving members (83) are provided in pairs. The components (83) drive the two rows of synchronization rods (81) respectively. The upper bevel gear (84) and the lower bevel gear (85) are fixedly mounted on the synchronization rod (81), and the upper bevel gear (84) is meshedly connected with the first rotating bevel gear (86). The lower bevel gear (85) is meshedly connected with the second rotating bevel gear (87). The first rotating bevel gear (86) is fixedly mounted on the rotating shaft (66) of the upper pressure roller (4), and the second rotating bevel gear (87) is fixedly mounted on the rotating shaft (66) of the lower pressure roller (5).

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