Battery pole piece rolling equipment

Abstract

The utility model relates to a battery pole piece rolling device which comprises a machine table, an unwinding roller arranged on the machine table and used for unwinding a pole piece; the rolling mechanism is arranged on the machine table, the rolling mechanism comprises two sets of rolling units, each set of rolling unit comprises a supporting roller and a working roller, the working roller is connected with a pressing driving part, and the pressing driving part drives the working roller to be close to or away from the supporting roller; the cleaning assembly comprises a rotating motor and a cleaning roller connected with the output end of the rotating motor, the cleaning roller is arranged on the side, away from the supporting roller, of the working roller, a plurality of connecting plates are installed on the cleaning roller, and brushes are arranged at the ends of the connecting plates; the tension adjusting assembly comprises a lifting device and a tension roller installed on the lifting device, and the lifting device is used for adjusting the height of the tension roller; wherein the working rollers of one group of rolling units are positioned above the supporting rollers, and the working rollers of the other group of rolling units are positioned below the supporting rollers. The pole piece rolling device is high in rolling efficiency, the surfaces of the working rollers can be cleaned in real time, the surface quality of pole pieces is guaranteed, and the maintenance cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and more specifically, to a battery electrode rolling equipment. Background Technology

[0002] In battery production, after the electrode surface is coated, it needs to be rolled to compact the electrode surface through mechanical pressure, so that the electrode and active material are tightly bonded together.

[0003] Currently, to ensure consistent rolling force on both sides of the electrode, some rolling mills only have one set of rollers and a fixed roller. After rolling one side of the electrode, it is wound up, then unwound, and the other side is rolled again. This method has a long transfer time and low efficiency. Furthermore, during the rolling process, powdery substances often adhere to the surface of the rollers. These powders mainly originate from incompletely cured active materials, conductive agents, and binders from the electrode coating process. During rolling, these substances are pressed into the roller surface, forming adhesions. These adhesions reduce the smoothness of the rollers, increase friction, and affect the uniformity of electrode thickness and density, thus impacting battery performance and safety. Additionally, they accelerate roller wear, shortening the equipment's lifespan. Utility Model Content

[0004] In view of this, the present invention provides a battery electrode rolling equipment that can solve the above problems.

[0005] A battery electrode rolling mill includes: a machine base with an unwinding roller for unwinding electrode sheets; a rolling mechanism mounted on the machine base, comprising two rolling units, each unit including a support roller and a working roller, the working roller connected to a pressing drive for driving the working roller to move closer to and away from the support roller; a cleaning assembly including a rotating motor and a cleaning roller connected to the output of the rotating motor, the cleaning roller being located on the side of the working roller away from the support roller, the cleaning roller having multiple connecting plates mounted on it, and brushes at the ends of the connecting plates; and a tension adjusting assembly including a lifting device and a tension roller mounted on the lifting device, the lifting device being used to adjust the height of the tension roller; wherein the working roller of one rolling unit is located above the support roller, and the working roller of the other rolling unit is located below the support roller.

[0006] In the above technical solution, the battery electrode roll is mounted on an unwinding roller, which unwinds the electrode. After unwinding, the electrode passes through two sets of rolling units in the rolling mechanism. During rolling, the height of the support roller remains constant, and the working roller approaches the support roller under the drive of the pressing drive, thereby pressing the electrode onto the support roller. The working roller in one rolling unit is located above the support roller, and the working roller in the other rolling unit is located below the support roller, so as to roll both sides of the electrode respectively. The rolling force of the working roller on the electrode can be controlled by adjusting the relevant parameters of the pressing drive. In addition, a cleaning roller is provided on the side of each working roller away from the support roller. When the working roller is working, the cleaning roller rotates under the drive of the rotating motor and cleans the surface of the working roller with the brushes on its surface, thereby removing the adhering substances and impurities on the surface of the working roller. The tension adjustment component can be set in the front and rear sections of the rolling mechanism. It changes the height of the tension roller through a lifting device, thereby adjusting the tension of the electrode.

[0007] Furthermore, the ends of the two support rollers closest to the working roller are located in the same horizontal plane.

[0008] In the above technical solution, since the height of the support roller remains unchanged during the rolling process, the support surface is at the same height when the two sides of the electrode are rolled, which can effectively ensure the consistency of the rolling effect on both sides of the electrode.

[0009] Furthermore, the rolling unit also includes a mounting base, on which the support roller is mounted.

[0010] In the above technical solution, the mounting base is used to ensure the installation of the support roller, thereby improving its stability and ensuring the effect and quality of roller pressing.

[0011] Furthermore, the cleaning assembly also includes a lifting rod connected to a lifting drive component, and the rotating motor is mounted on the lifting rod.

[0012] In the above technical solution, the lifting drive can drive the lifting rod to move up and down, thereby adjusting the height of the rotating motor and the cleaning roller to ensure the cleaning effect on the working roller.

[0013] Furthermore, the lifting device includes a telescopic rod that can extend and retract, and the two ends of the tension roller shaft are mounted on the telescopic rod.

[0014] In the above technical solution, the telescopic rod changes the height of the tension roller by extending and retracting, thereby adjusting the tension of the electrode sheet.

[0015] Furthermore, two tension adjustment components are provided, and the two tension adjustment components are respectively located on both sides of the roller pressing mechanism.

[0016] In the above technical solution, the tension adjustment component located before the rolling mechanism is used to adjust the inlet tension before the electrode is rolled. The inlet tension will affect the internal stress distribution during the rolling of the electrode. The tension adjustment component located after the rolling mechanism is used to adjust the outlet tension after the electrode is rolled. The outlet tension will affect the flatness of the electrode.

[0017] Furthermore, the machine base is also provided with two guide components, each of which includes a guide roller, which is located between the tension adjustment component and the rolling mechanism.

[0018] In the above technical solution, the guide roller is used to transition and guide the unwound electrode sheet. The guide roller is located between the tension adjustment component and the rolling mechanism to adjust the angle and direction of the electrode sheet entering and exiting the rolling mechanism.

[0019] Furthermore, the guide assembly includes a mounting plate with a vertical groove on the mounting plate, and the two ends of the guide roller shaft are slidably mounted in the groove.

[0020] In the above technical solution, the guide roller can slide along the groove provided on the mounting plate, and the electrode sheet can be guided by adjusting the height.

[0021] Furthermore, the machine base is equipped with a take-up roller, which is used to take up the electrode sheet.

[0022] In the above technical solution, the take-up roller is used to take up the electrode sheet after it has been rolled.

[0023] The beneficial effects of this utility model are as follows:

[0024] This application is equipped with two sets of rolling units to roll the two sides of the electrode sheet separately, eliminating the need to transfer the electrode sheet and improving work efficiency. In addition, by using two sets of working rolls to roll the two sides of the electrode sheet separately, it is easy to control the consistency of the rolling force on both sides of the electrode sheet and improve the quality of rolling.

[0025] This application includes a cleaning component, which includes a rotatable cleaning roller. The cleaning roller can clean the surface of the working roll being rolled by brushes on its surface, removing adhering substances and impurities from the surface of the working roll, ensuring the surface quality of the electrode sheet, and at the same time, reducing the frequency of cleaning and maintenance of the working roll, thus saving maintenance costs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a battery electrode rolling equipment according to one embodiment.

[0028] Figure 2 This is a schematic diagram of the cleaning component of this application.

[0029] Explanation of the reference numerals in the figure:

[0030] 1-Machine base; 2-Unwinding roll; 3-Rolling mechanism; 31-Working roll; 32-Support roll; 33-Pressure driving component; 34-Mounting base; 4-Cleaning assembly; 41-Cleaning roll; 411-Connecting plate; 412-Brush; 42-Rotating motor; 43-Lifting rod; 5-Tension adjustment assembly; 51-Tension roll; 52-Lifting device; 521-Telescopic rod; 6-Guide assembly; 61-Guide roll; 62-Mounting plate; 621-Groove; 7-Take-up roll. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] Please refer to Figures 1 to 2In a preferred embodiment of this application, a battery electrode rolling device is provided, comprising a machine base 1, and an unwinding roller 2, a rolling mechanism 3, a cleaning component 4, a tension adjusting component 5, and a take-up roller 7 disposed on the machine base 1; the unwinding roller 2 is used to unwind the electrode sheet, the rolling mechanism 3 includes two sets of rolling units, each set of rolling units including a support roller 32 and a working roller 31, the working roller 31 is connected to a pressing drive component 33, the pressing drive component 33 drives the working roller 31 to move closer to and away from the support roller 32; the cleaning component 4 includes a rotating motor 42, and a component connected to the rotating motor 42 for power supply. The cleaning roller 41 is connected to the output end and is located on the side of the working roller 31 away from the support roller 32. Multiple connecting plates 411 are installed on the cleaning roller 41, and the ends of the connecting plates 411 are provided with brushes 412. The tension adjustment assembly 5 includes a lifting device 52 and a tension roller 51 installed on the lifting device 52. The lifting device 52 is used to adjust the height of the tension roller 51. The winding roller 7 is used to wind up the rolled electrode sheet. Among them, the working rollers 31 of one set of rolling units are located above the support roller 32, and the working rollers 31 of another set of rolling units are located below the support roller 32.

[0035] Specifically, the battery electrode roll is mounted on the unwinding roller 2 and unloaded by the unwinding roller 2. After unloading, the electrode roll passes through two sets of rolling units in the rolling mechanism 3. During rolling, the height of the support roller 32 remains unchanged, and the working roller 31 approaches the support roller 32 under the drive of the pressing drive 33, thereby pressing the electrode roll onto the support roller 32. In one set of rolling units, the working roller 31 is located above the support roller 32 and is used to roll the upper surface of the electrode roll. In the other set of rolling units, the working roller 31 is located... Below the support roller 32, the lower surface of the electrode sheet is rolled. The rolling force of the working roller 31 on the electrode sheet can be controlled by adjusting the relevant parameters of the pressing drive 33. In addition, a cleaning roller 41 is provided on the side of each working roller 31 away from the support roller 32. When the working roller 31 is working, the cleaning roller 41 rotates under the drive of the rotating motor 42 and cleans the surface of the working roller 31 with the brush 412 provided on its surface, thereby removing the adhering substances and impurities on the surface of the working roller 31.

[0036] Preferably, two tension adjustment components 5 are provided, located on opposite sides of the rolling mechanism 3. Each tension component includes a lifting device 52 and a tension roller 51. The lifting device 52 includes a telescopic rod 521, and the two ends of the roller shaft of the tension roller 51 are mounted on the telescopic rod 521. The height of the tension roller 51 is changed by extending or retracting the telescopic rod 521, thereby adjusting the tension of the electrode sheet. Specifically, the tension adjustment component 5 located before the rolling mechanism 3 is used to adjust the inlet tension before the electrode sheet is rolled, ensuring a uniform distribution of internal stress during rolling and improving the rolling quality. The tension adjustment component 5 located after the rolling mechanism 3 is used to adjust the outlet tension after the electrode sheet is rolled, ensuring the flatness of the plate after rolling.

[0037] It is worth mentioning that during the rolling process, small particulate impurities often adhere to the surface of the working roll 31. These impurities include incompletely cured active substances, conductive agents, and binders from the electrode coating process, as well as dust from the air. If not cleaned in time, these impurities will be pressed into the surface of the roll during the rolling process, thereby reducing the smoothness of the roll and increasing friction. This can easily affect the uniformity of the thickness and density of the electrode during rolling, thus affecting its quality. In addition, it can also lead to accelerated wear of the roll and shorten the service life of the equipment. Therefore, by setting up a cleaning roll 41, impurities on the surface of the working roll 31 are removed in time during the rolling process, ensuring the rolling effect and quality of the electrode. At the same time, frequent cleaning and maintenance of the working roll 31 is not required, which greatly reduces maintenance costs.

[0038] Please refer to Figure 1 In this embodiment, the ends of the two support rollers 32 that are close to the working roller 31 are located in the same horizontal plane. Since the height of the support rollers 32 remains unchanged during rolling, when the two sides of the electrode are rolled, the support surface of the electrode (i.e. the other side that is different from the rolling working surface) is at the same height, which can effectively ensure the consistency of the rolling effect on the two sides of the electrode.

[0039] Please refer to Figure 1 In this embodiment, the rolling unit also includes a mounting base 34, on which the support roller 32 is mounted. The mounting base 34 is used to ensure the mounting of the support roller 32, thereby improving its stability and ensuring the effect and quality of the rolling process.

[0040] Please refer to Figure 2 In this embodiment, the cleaning component 4 includes a lifting rod 43, which is connected to a lifting drive (not specifically shown in the figure). A rotating motor 42 is mounted on the lifting rod 43, and the lifting drive can drive the lifting rod 43 to move up and down, thereby adjusting the height of the rotating motor 42 and the cleaning roller 41, ensuring that the brush 412 on the cleaning roller 41 can contact the working roller 31, so as to ensure the cleaning effect on the working roller 31.

[0041] Please refer to Figure 1 In this embodiment, two guide components 6 are provided on the machine base 1. Each guide component 6 includes a guide roller 61 and a mounting plate 62. The mounting plate 62 is provided with a vertical groove 621. The two ends of the roller shaft of the guide roller 61 are slidably installed in the groove 621, so that it can slide up and down to adjust its height. The guide roller 61 is located between the tension adjustment component 5 and the roller pressing mechanism 3 to facilitate the adjustment of the angle and direction of the electrode sheet entering and exiting the roller pressing mechanism 3.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0043] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A battery electrode rolling mill, characterized in that, include: A machine platform, wherein an unwinding roller is provided on the machine platform, the unwinding roller being used to unwind the electrode sheet; A rolling mechanism is provided on the machine base. The rolling mechanism includes two sets of rolling units. Each set of rolling units includes a support roller and a working roller. The working roller is connected to a pressing drive component. The pressing drive component drives the working roller to move closer to and away from the support roller. A cleaning assembly includes a rotating motor and a cleaning roller connected to the output end of the rotating motor. The cleaning roller is located on the side of the working roll away from the support roller. A plurality of connecting plates are mounted on the cleaning roller, and the ends of the connecting plates are provided with brushes. A tension adjustment assembly includes a lifting device and a tension roller mounted on the lifting device, the lifting device being used to adjust the height of the tension roller; In one set of rolling units, the working rolls are located above the support rolls, while in another set of rolling units, the working rolls are located below the support rolls.

2. The battery electrode rolling equipment according to claim 1, characterized in that, The two support rollers are located on the same horizontal plane at the ends closest to the working roller.

3. The battery electrode rolling equipment according to claim 1, characterized in that, The roller pressing unit also includes a mounting base, on which the support roller is mounted.

4. The battery electrode rolling equipment according to claim 1, characterized in that, The cleaning assembly also includes a lifting rod connected to a lifting drive component, and the rotating motor is mounted on the lifting rod.

5. The battery electrode rolling equipment according to claim 1, characterized in that, The lifting device includes a telescopic rod that can extend and retract, and the two ends of the tension roller shaft are mounted on the telescopic rod.

6. The battery electrode rolling equipment according to claim 1, characterized in that, There are two tension adjustment components, which are located on both sides of the roller pressing mechanism.

7. The battery electrode rolling equipment according to claim 6, characterized in that, The machine base is also provided with two guide components, each of which includes a guide roller, which is located between the tension adjustment component and the rolling mechanism.

8. The battery electrode rolling equipment according to claim 7, characterized in that, The guide assembly includes a mounting plate with a vertical groove, and the two ends of the guide roller shaft are slidably mounted in the groove.

9. The battery electrode rolling equipment according to claim 1, characterized in that, The machine base is equipped with a take-up roller, which is used to take up the electrode sheet.

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