Cleaning mechanism, thermal compounding roller apparatus, and thermal compounding device

Abstract

The present application provides a cleaning mechanism, a thermal compounding roller apparatus, and a thermal compounding device. The thermal compounding roller apparatus comprises: a thermal compounding mechanism, wherein the thermal compounding mechanism comprises at least one thermal compounding roller; and the cleaning mechanism, wherein the cleaning mechanism comprises a cleaning roller and a cleaning roller fixing support; the cleaning roller is configured to come into contact with the surface of the thermal compounding roller and clean the surface of the thermal compounding roller; and the cleaning roller is detachably connected to the cleaning roller fixing support.

Description

Cleaning mechanism, hot laminating roller device and hot laminating equipment

[0001] This application claims priority to Chinese Patent Application No. 202422913482.1, filed with the Chinese Patent Office on November 27, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery manufacturing technology, specifically to a cleaning mechanism, a thermal bonding roller device, and a thermal bonding equipment. Background Technology

[0003] The battery electrode thermal bonding process involves heating a thermal bonding roller to bond the positive electrode, separator, and negative electrode together to form a thermally bonded electrode assembly. During continuous production, dust such as ceramic coating and bonding adhesive from the separator can adhere to the thermal bonding roller. Invention Overview

[0004] In related technologies, the cleaning mechanism of the thermal composite roller is set as a fixed mechanism. This means that after the cleaning mechanism cleans the surface of the thermal composite roller, the dust adsorbed by the cleaning mechanism will continue to adhere to the surface of the cleaning mechanism. In particular, when the cleaning mechanism is set to clean the dust on the surface of the thermal composite roller by adhesion, during continuous production, the surface of the cleaning mechanism will be covered with a lot of dust, which will affect the adsorption effect of the cleaning mechanism and the cleaning of the thermal composite roller.

[0005] In a first aspect, embodiments of this application provide a thermal composite roller device, comprising:

[0006] A thermal bonding mechanism, comprising at least one thermal bonding roller;

[0007] The cleaning mechanism includes a cleaning roller and a cleaning roller mounting bracket. The cleaning roller is configured to contact and clean the surface of the thermal composite roller, and the cleaning roller is detachably connected to the cleaning roller mounting bracket.

[0008] Secondly, embodiments of this application provide a cleaning mechanism, which is configured as the cleaning mechanism of the aforementioned thermal composite roller device.

[0009] Thirdly, embodiments of this application provide a thermal bonding apparatus, including the aforementioned thermal bonding roller device and a stacking device. The thermal bonding roller device is configured to process and form multiple thermal bonding electrode assemblies, and the stacking device is configured to stack multiple thermal bonding electrode assemblies. Beneficial effects

[0010] The thermal composite roller device provided in this application includes a cleaning mechanism, which comprises a cleaning roller and a cleaning roller fixing bracket. The cleaning roller is disposed in contact with the surface of the thermal composite roller and cleans the surface of the thermal composite roller. The cleaning roller is detachably connected to the cleaning roller fixing bracket, so that the cleaning roller can be separated from the cleaning roller fixing bracket to facilitate timely cleaning of the surface of the cleaning roller, thereby improving the cleaning effect of the cleaning roller.

[0011] The cleaning mechanism provided in this application includes a cleaning roller and a cleaning roller fixing bracket. The cleaning roller is disposed in contact with the surface of the thermal composite roller and cleans the surface of the thermal composite roller. The cleaning roller is detachably connected to the cleaning roller fixing bracket, so that the cleaning roller can be separated from the cleaning roller fixing bracket to facilitate timely cleaning of the surface of the cleaning roller and thus improve the cleaning effect of the cleaning roller.

[0012] The thermal laminating equipment provided in this application includes the aforementioned thermal laminating roller device. The thermal laminating equipment is designed based on the aforementioned thermal laminating roller device, and its beneficial effects are as described above, and will not be repeated here. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 is a front view of the thermal composite roller device provided in an embodiment of this application;

[0015] Figure 2 is a perspective view of the thermal composite roller device provided in an embodiment of this application from another angle;

[0016] Figure 3 is a front view of the cleaning roller fixing bracket of the cleaning mechanism provided in the embodiment of this application in the cleaning position;

[0017] Figure 4 is a front view of the cleaning roller fixing bracket of the cleaning mechanism provided in the embodiment of this application in the removed position;

[0018] Figure 5 is a perspective view of the cleaning roller fixing bracket provided in an embodiment of this application;

[0019] Icon labels:

[0020] 10. Thermal composite roller device;

[0021] 1. Thermal bonding mechanism; 11. Thermal bonding roller; 111. Driven roller; 112. Driven roller; 113. Auxiliary moving roller; 12. Thermal bonding roller fixing bracket; 121. Driven roller fixing bracket; 122. Driven roller fixing bracket; 123. Slide rail; 13. Drive component; 14. Cylinder drive assembly; 141. Drive cylinder; 142. Linear shaft; 143. Guide column; 151. Driven roller shaft; 152. Driven roller shaft; 153. Auxiliary moving roller shaft; 16. Support plate;

[0022] 2. Cleaning mechanism; 21. Cleaning roller; 211. Cleaning roller shaft; 212. Cleaning roller body; 22. Cleaning roller fixing bracket; 231. Fixing groove; 232. Opening; 24. Slider; 25. Elastic element;

[0023] 3. Electrode assembly; Embodiments of the present invention

[0024] The thermal bonding process for battery electrodes involves heating a thermal bonding roller to bond the positive electrode, separator, and negative electrode together to form a thermally bonded electrode assembly. During continuous production, dust such as the ceramic coating and adhesive on the separator adheres to the thermal bonding roller. In related technologies, the cleaning mechanism of the thermal bonding roller is often a fixed mechanism. This means that after the cleaning mechanism cleans the surface of the thermal bonding roller, the dust adsorbed by the cleaning mechanism continues to adhere to the surface of the cleaning mechanism. Especially when the cleaning mechanism cleans the dust surface of the thermal bonding roller by adhesion, a large amount of dust accumulates on the surface of the cleaning mechanism during continuous production, thus affecting the adsorption effect of the cleaning mechanism and the cleaning of the thermal bonding roller.

[0025] An embodiment of this application provides a thermal composite roller device, as shown in Figures 1 and 2. The thermal composite roller device 10 includes a thermal composite mechanism 1 and a cleaning mechanism 2.

[0026] The thermal bonding mechanism 1 includes at least one thermal bonding roller 11, a thermal bonding roller fixing bracket 12, a driving component 13, a cylinder driving assembly 14, and a support plate 16.

[0027] At least one thermal bonding roller 11 includes a drive roller 111 and a driven roller 112, with a gap formed between the drive roller 111 and the driven roller 112, the gap being configured to allow the electrode assembly 3 to be bonded to pass through. The electrode assembly to be bonded includes a positive electrode, a separator, and a negative electrode. At least one thermal bonding roller 11 also includes an auxiliary drive roller 113, which is located before the drive roller 111 and the driven roller 112, and is used to drive the positive electrode, separator, or negative electrode to be bonded to move toward the drive roller 111 and the driven roller 112. The driving roller 111, driven roller 112, and auxiliary driving roller 113 are all cylindrical. The driving roller 111 includes a driving roller shaft 151 and a driving roller body circumferentially surrounding the driving roller shaft 151. The driving roller shaft 151 is the central axis of the driving roller 111. The top and bottom ends of the driving roller shaft 151 protrude relative to the top and bottom ends of the driving roller body, and the driving roller 111 is fixed by the driving roller shaft 151. The driven roller 112 includes a driven roller shaft 152 and a driven roller body circumferentially surrounding the driven roller shaft 152. The driven roller shaft 152 is the central axis of the driven roller 112. The top and bottom ends of the driven roller shaft 152 protrude relative to the top and bottom ends of the driven roller body, and the driven roller 112 is fixed by the driven roller shaft 152. The auxiliary moving roller 113 includes an auxiliary moving roller shaft 153 and an auxiliary moving roller body arranged circumferentially around the auxiliary moving roller shaft 153. The auxiliary moving roller shaft 153 is set as the central axis of the auxiliary moving roller 113. The top and bottom ends of the auxiliary moving roller shaft 153 are both protruding relative to the top and bottom ends of the auxiliary moving roller body. The auxiliary moving roller 113 is fixed by the auxiliary moving roller shaft 153.

[0028] The thermal composite roller fixing bracket 12 includes a drive roller fixing bracket 121 and a driven roller fixing bracket 122. Both the drive roller fixing bracket 121 and the driven roller fixing bracket 122 are frame structures. The drive roller fixing bracket 121 is provided with a drive roller receiving cavity, and the driven roller fixing bracket 122 is provided with a driven roller receiving cavity. The drive roller 111 and the driven roller fixing bracket 122 are fixed in the drive roller receiving cavity, and the driven roller 112 is fixed in the driven roller receiving cavity.

[0029] The drive unit 13 is configured to drive the active roller 111 to rotate, and the drive unit 13 includes a motor. The drive unit 13 is rotatably connected to one end of the active roller shaft 151 via a coupling, and is used to drive the active roller 111 to rotate. The driven roller 112 is arranged parallel to the active roller 111 and is driven by a drive cylinder so that the driven roller 112 keeps in contact with the active roller 111 and is driven by the active roller 111 to rotate.

[0030] The cylinder drive assembly 14 includes a drive cylinder 141, a linear shaft 142, and a guide post 143. The drive cylinder 141 is mounted on one side of the drive roller fixing bracket 121. A through hole is provided on the drive roller fixing bracket 121 for the drive cylinder 141's connecting shaft to pass through. The drive cylinder 141 drives the driven roller fixing bracket 122. Through its extension and retraction, the drive cylinder 141 pushes the driven roller fixing bracket 122 to move along the x-direction as shown in Figure 1, thereby causing the driven roller 112 to move closer to or further away from the drive roller 111, maintaining contact between the driven roller 112 and the drive roller 111. The linear shaft 142 and the guide post 143 are respectively mounted on both sides of the drive cylinder 141. The guide post 143 serves as a guide, and the linear shaft 142 is connected to the driven roller fixing bracket 122, causing the driven roller fixing bracket 122 to maintain linear movement along the x-direction as shown in Figure 1.

[0031] The support plate 16 is used to fix the top of the active roller fixing bracket 121 and the top of the auxiliary moving roller 113.

[0032] In the embodiments of this application, the cleaning mechanism 2 includes a cleaning roller 21 and a cleaning roller fixing bracket 22. The cleaning roller 21 is detachably connected to the cleaning roller fixing bracket 22, and the cleaning roller 21 is configured to contact the surface of the thermal composite roller 11 and clean the surface of the thermal composite roller 11.

[0033] By detachably connecting the cleaning roller 21 to the cleaning roller fixing bracket 22, the cleaning roller 21 can be separated from the cleaning roller fixing bracket 22. After the cleaning roller 21 is separated from the cleaning roller fixing bracket 22, it is convenient to clean the surface of the cleaning roller 21. After the cleaning roller 21 is cleaned, it is installed back on the cleaning roller fixing bracket 22 so that the cleaning roller 21 can continue to clean the surface of the thermal composite roller 11 efficiently.

[0034] The cleaning roller 21 can be used to clean at least one of the driving roller 111, the driven roller 112, and the auxiliary driving roller 113. In one embodiment provided in this application, the cleaning roller 21 is installed on one side of the driven roller 112 and used to clean the driven roller 112 as an example.

[0035] In some embodiments, referring again to Figures 3 and 5, the cleaning roller 21 is detachably snap-fitted to the cleaning roller mounting bracket 22. The cleaning roller 21 is a cylindrical structure, comprising a cleaning roller shaft 211 and a cleaning roller body 212 surrounding the cleaning roller shaft 211. The cleaning roller body 212 is rotatable around the cleaning roller shaft 211. The cleaning roller mounting bracket 22 has two opposing mounting grooves 231. The top end of the cleaning roller shaft 211 is fixed in one mounting groove 231, and the bottom end of the cleaning roller shaft 211 is fixed in the other mounting groove 231. An opening 232 is provided on one side of each mounting groove 231, allowing the cleaning roller shaft 211 to snap into or out of the mounting groove 231.

[0036] Referring again to Figures 1 to 4, the cleaning roller fixing bracket 22 is slidably mounted on the driven roller fixing bracket 122. Understandably, during the thermal lamination process of the thermal lamination mechanism 1, moving the cleaning roller fixing bracket 22 causes the cleaning roller 21 to abut against the driven roller 112, thereby cleaning the surface of the driven roller 112. When the thermal lamination mechanism 1 pauses thermal lamination, moving the cleaning roller fixing bracket 22 separates the cleaning roller 21 from the driven roller 112, facilitating the removal of the cleaning roller 21.

[0037] In some implementations, one of the cleaning roller fixing bracket 22 and the driven roller fixing bracket 122 is provided with a slide rail 123, and the other of the cleaning roller fixing bracket 22 and the driven roller fixing bracket 122 is provided with a slider 24. The slider 24 is configured to slide within the slide rail 123 in the X direction as shown in FIG2.

[0038] In some embodiments, continuing to refer to Figures 3 and 4, the cleaning roller retainer 22 is configured to slide between a cleaning position and a removed position. As shown in Figure 3, when the cleaning roller retainer 22 is in the cleaning position, the cleaning roller 21 is configured to contact the driven roller 112 and be available for cleaning the surface of the driven roller 112. As shown in Figure 4, when the cleaning roller retainer 22 is in the removed position, the cleaning roller 21 is configured to separate from the driven roller 112 and be removed through the opening 232 out of the retaining groove 231 for cleaning the surface of the cleaning roller 21.

[0039] In some embodiments, at least one elastic element 25 is further provided between the cleaning roller fixing bracket 22 and the driven roller fixing bracket 122. The elastic element 25 is configured to drive the cleaning roller fixing bracket 22 from the removed position shown in FIG. 4 to the cleaning position shown in FIG. 3. When the cleaning roller fixing bracket 22 is in the removed position shown in FIG. 4, the elastic element 25 is in an elastically deformed state, thereby driving the cleaning roller fixing bracket 22 to move toward the driven roller 112. It is understood that when the cleaning roller fixing bracket 22 is in the cleaning position shown in FIG. 3, the elastic element 25 is still in an elastically deformed state, thereby causing the cleaning roller 21 to abut against the surface of the driven roller 112 and maintain contact with the driven roller 112. The at least one elastic element 25 includes two, one end of the elastic element 25 is connected to the driven roller fixing bracket 122, and the other end of the elastic element 25 is connected to the cleaning roller fixing bracket 22. The elastic element 25 includes a spring.

[0040] In some embodiments, the cleaning roller 21 is configured as a reusable adhesive roller, which contacts the surface of the thermal composite roller 11 and adsorbs dust from the surface of the thermal composite roller 11. The adhesive roller includes a nano-adhesive roller, which is a roller with a special nanostructure or coating on its surface. The nano-adhesive roller has strong adhesion, enabling it to adhere to dust adhering to the surface of the thermal composite roller 11, thereby efficiently cleaning the thermal composite roller 11. Suitable nano-adhesive rollers include nitrile nano-adhesive rollers, which are prepared from materials including at least one of nitrile rubber, polyacrylate and / or polyurethane polymers, and silicone alkyl groups. Compared to ordinary adhesive rollers, nitrile nano-adhesive rollers can be cleaned by washing with water, making the cleaning method of the cleaning roller 21 simple, and allowing the nitrile nano-adhesive roller to continue to be used after washing and drying, thereby extending the service life of the cleaning mechanism.

[0041] Referring again to Figures 1 to 3, the driving roller 111 is driven by the driven member 13, and the driven roller 112 is in contact with the driving roller 111. The driving roller 111 and the driven roller 112 are arranged parallel to each other. The outer diameter of the driving roller 111 is larger than the outer diameter of the driven roller 112, so that the driven roller 112 can be driven by the driving roller 111 and thus rotate synchronously with the driving roller 111. The driving roller 111 is located on one side of the driven roller 112, and the cleaning roller 21 is located on the other side of the driven roller 112 and is in contact with the driven roller 112. The outer diameter of the driven roller 112 is larger than the outer diameter of the cleaning roller 21, so that the cleaning roller 21 can be driven by the driven roller 112 and thus rotate synchronously with the driven roller 112.

[0042] Referring again to Figures 1 to 3, the drive roller 111, driven roller 112, and cleaning roller 21 are in contact with each other in sequence, and the height of the drive roller 111 is greater than the height of the driven roller 112, the height of the driven roller 112 is greater than the height of the cleaning roller 21. Correspondingly, the height of the drive roller fixing bracket cavity is greater than the height of the driven roller fixing bracket cavity, and the height of the driven roller fixing bracket cavity is greater than the height of the cleaning roller fixing bracket cavity, so that the driven roller fixing bracket is fixed in the drive roller fixing bracket cavity, and the cleaning roller fixing bracket is fixed in the driven roller fixing bracket cavity.

[0043] Referring again to Figures 1 to 3, the cleaning roller shaft 211 is fixed in the fixing groove 231 of the cleaning roller fixing bracket 22, the driven roller shaft 152 is fixed on the driven roller fixing bracket 122, and the driving roller shaft 151 is fixed on the driving roller fixing bracket 121. Any two of the driving roller 111, driven roller 112 and cleaning roller 21 are arranged in parallel, and the height of the driving roller shaft 151 is greater than the height of the driven roller shaft 152, and the height of the driven roller shaft 152 is greater than the height of the cleaning roller shaft 211. This allows the driven roller fixing bracket 122 to move relative to the driving roller fixing bracket 121, and the cleaning roller fixing bracket 22 to move relative to the driven roller fixing bracket 122.

[0044] The embodiments of this application also provide a thermal bonding device, which includes a thermal bonding roller device and a stacking device. The thermal bonding device is configured to process a positive electrode sheet, a separator, and a negative electrode sheet to form a plurality of thermally bonded electrodes, and the stacking device is configured to stack the plurality of thermally bonded electrodes to form a core package.

[0045] In a first aspect, embodiments of this application provide a thermal composite roller device, comprising:

[0046] A thermal bonding mechanism, comprising at least one thermal bonding roller;

[0047] The cleaning mechanism includes a cleaning roller and a cleaning roller mounting bracket. The cleaning roller is configured to contact and clean the surface of the thermal composite roller, and the cleaning roller is detachably connected to the cleaning roller mounting bracket.

[0048] In one embodiment, the cleaning roller fixing bracket is provided with two opposing fixing grooves; the cleaning roller includes a cleaning roller shaft, and the cleaning roller rotates around the cleaning roller shaft; wherein, the two ends of the cleaning roller shaft are respectively engaged in the two fixing grooves.

[0049] In one embodiment, the thermal lamination mechanism further includes a thermal lamination roller fixing bracket, and at least one thermal lamination roller is mounted on the thermal lamination roller fixing bracket; wherein, the cleaning roller fixing bracket is mounted on the thermal lamination roller fixing bracket.

[0050] In one embodiment, the cleaning roller mounting bracket is slidably mounted on the thermal composite roller mounting bracket to be away from or close to the thermal composite roller.

[0051] In one embodiment, an elastic element is also provided between the cleaning roller fixing bracket and the thermal composite roller fixing bracket.

[0052] In one embodiment, the thermal composite roller fixing bracket includes a drive roller fixing bracket and a driven roller fixing bracket. At least one thermal composite roller includes a drive roller and a driven roller. The drive roller is rotatably mounted on the drive roller fixing bracket, and the driven roller is rotatably mounted on the driven roller fixing bracket. The drive roller is used to drive the driven roller. The drive roller is configured to be driven by a driving mechanism and drive the driven roller to rotate. The cleaning roller is configured to contact the surface of the driven roller and be driven by the driven roller to rotate.

[0053] In one embodiment, the driven roller fixing bracket is fixed inside the driving roller fixing bracket, and the cleaning roller fixing bracket is fixed inside the driven roller fixing bracket.

[0054] In one embodiment, the cleaning roller and the driven roller are arranged in parallel, and the length of the driven roller is greater than the length of the cleaning roller.

[0055] In one embodiment, the cleaning roller is configured as an adhesive roller, which is configured to contact the thermal composite roller and adsorb dust on the surface of the thermal composite roller.

[0056] Secondly, embodiments of this application provide a cleaning mechanism, which is configured as the cleaning mechanism of the aforementioned thermal composite roller device.

[0057] Thirdly, embodiments of this application provide a thermal bonding apparatus, including the aforementioned thermal bonding roller device and a stacking device. The thermal bonding roller device is configured to process and form multiple thermal bonding electrode assemblies, and the stacking device is configured to stack multiple thermal bonding electrode assemblies.

Claims

1. A thermal composite roller device, comprising: The thermal bonding mechanism (1) includes at least one thermal bonding roller (11). The cleaning mechanism (2) includes a cleaning roller (21) and a cleaning roller fixing bracket (22). The cleaning roller (21) is configured to contact the surface of the thermal composite roller (11) and clean the surface of the thermal composite roller (11), and the cleaning roller (21) is detachably connected to the cleaning roller fixing bracket (22).

2. The thermal compounding roller apparatus of claim 1, wherein, The cleaning roller fixing bracket (22) is provided with two opposing fixing grooves (231); the cleaning roller (21) includes a cleaning roller shaft (211), and the cleaning roller (21) rotates around the cleaning roller shaft (211); wherein, the two ends of the cleaning roller shaft (211) are respectively inserted into the two fixing grooves (231).

3. The thermal compounding roller apparatus of claim 1, wherein, The thermal bonding mechanism (1) further includes a thermal bonding roller fixing bracket (12), and at least one of the thermal bonding rollers (11) is mounted on the thermal bonding roller fixing bracket (12); wherein the cleaning roller fixing bracket (22) is mounted on the thermal bonding roller fixing bracket (12).

4. The thermal compounding roller apparatus of claim 3, wherein, The cleaning roller fixing bracket (22) is slidably mounted on the thermal composite roller fixing bracket (12) to be away from or close to the thermal composite roller (11).

5. The thermal compounding roller apparatus of claim 4, wherein, An elastic element (25) is also provided between the cleaning roller fixing bracket (22) and the thermal composite roller fixing bracket (12).

6. The thermal composite roller device according to claim 3, wherein, The heat-composite roller fixing bracket (12) includes an active roller fixing bracket (121) and a driven roller fixing bracket (122). At least one of the heat-composite rollers (11) includes an active roller (111) and a driven roller (112). The active roller (111) is rotatably mounted on the active roller fixing bracket (121), and the driven roller (112) is rotatably mounted on the driven roller fixing bracket (122). The active roller (111) is connected to the driven roller (112) in a driving connection. The active roller (111) is configured to be driven by the driving member (13) and drive the driven roller (112) to rotate. The cleaning roller (21) is configured to contact the surface of the driven roller (112) and be driven by the driven roller (112) to rotate.

7. The thermal composite roller device according to claim 6, wherein, The driven roller fixing bracket (122) is fixed inside the driving roller fixing bracket (121), and the cleaning roller fixing bracket (22) is fixed inside the driven roller fixing bracket (122).

8. The thermal composite roller device according to claim 7, wherein, The cleaning roller (21) is arranged parallel to the driven roller (112), and the length of the driven roller (112) is greater than the length of the cleaning roller (21).

9. The thermal composite roller device according to any one of claims 1-8, wherein, The cleaning roller (21) is configured as an adhesive roller, and the cleaning roller (21) is configured to contact the thermal composite roller (11) and adsorb dust on the surface of the thermal composite roller (11).

10. A cleaning mechanism (2) is disposed in a hot composite roller device, wherein, The cleaning mechanism (2) includes the cleaning mechanism (2) of the thermal composite roller device according to any one of claims 1-9.

11. A thermal bonding apparatus, comprising a thermal bonding roller device as described in any one of claims 1-9 and a stacking device, wherein the thermal bonding roller device is configured to process and form a plurality of thermally bonded electrode assemblies, and the stacking device is configured to stack a plurality of the thermally bonded electrode assemblies.

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