Compression roller mechanism and compression roller device
By introducing a flexible cladding and transition molding design into the pressure roller device, the problem of electrode lug wrinkles was solved, improving the production quality of the electrode structure and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU QINGTAO NEW ENERGY TECH CO LTD
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-10
AI Technical Summary
Existing electrode pressing roller devices are prone to causing electrode tab wrinkles during the pressing process, leading to strip breakage and welding abnormalities, which affect the quality of battery cell manufacturing and increase costs.
Design a pressure roller mechanism including a flexible cladding and a pressure roller body. The flexible cladding is provided with protrusions and recesses. The recesses accommodate electrode tabs. The transition forming part is designed to prevent the electrode tabs from wrinkling and to increase friction to flatten the electrode structure.
Improve the production quality of electrode structures, reduce scrap rates, lower production costs, and ensure that the electrode tabs do not wrinkle during the pressing process.
Smart Images
Figure CN224103585U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery manufacturing equipment technical field especially, relates to a kind of compression roller mechanism and compression roller device. BACKGROUND
[0002] Pole piece structure is generally formed by pole piece main body and tab complex.
[0003] In the existing pole piece compression roller complex process, generally using the compression roller device with flat compression roller surface carries out compression roller, and it is prone to tab wrinkle problem in compression roller process, thereby causing broken belt and welding abnormality etc.
[0004] Therefore, a compression roller mechanism and compression roller device are needed to solve the above problems. INVENTION CONTENTS
[0005] According to one aspect of the utility model, the purpose is to provide a kind of compression roller mechanism, which can increase the friction between the pole piece structure, so that the pole piece structure can be flattened and rolled, and at the same time, it can avoid the problem of tab of pole piece structure from being wrinkled during the rolling process, reduce the scrap rate of pole piece structure, reduce production cost and improve the production quality of pole piece structure.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] Compression roller mechanism, comprising:
[0008] Compression roller body;
[0009] Flexible cladding, the flexible cladding is provided with:
[0010] Protruding portion, along the circumferential direction of the compression roller body, and corresponding to the pole piece body of pole piece structure;
[0011] Recess portion, along the circumferential direction of the compression roller body, and corresponding to the tab of the pole piece structure and accommodating the tab.
[0012] As a preferred scheme of the compression roller mechanism provided by the utility model, the transition forming portion is formed at the joint of the recess portion and the protruding portion, and the root of the tab can form an arc transition at the transition forming portion.
[0013] As a preferred scheme of the compression roller mechanism provided by the utility model, the transition forming portion includes a circular arc forming surface that is connected to the upper end surface of the protruding portion and the bottom of the recess portion, and the circular arc forming surface protrudes towards the direction of the bottom of the recess portion.
[0014] As a preferred scheme of the compression roller mechanism provided by the utility model, the transition forming part comprises a formed forming surface, the formed forming surface comprises a first arc-shaped part and a second arc-shaped part which are connected with each other, the first arc-shaped part is connected with the upper end surface of the convex part, the second arc-shaped part is connected with the bottom of the recessed part, the first arc-shaped part protrudes towards the direction away from the bottom of the recessed part, and the second arc-shaped part protrudes towards the direction where the bottom of the recessed part is located.
[0015] As a preferred scheme of the compression roller mechanism provided by the utility model, the arc surface radius of the first arc-shaped part is equal to the arc surface radius of the second arc-shaped part.
[0016] As a preferred scheme of the compression roller mechanism provided by the utility model, the recessed part comprises at least two annular grooves which are arranged at intervals along the axial direction of the compression roller body.
[0017] As a preferred scheme of the compression roller mechanism provided by the utility model, the compression roller mechanism further comprises a heating piece, the heating piece is arranged in the compression roller body and can heat the compression roller body.
[0018] As a preferred scheme of the compression roller mechanism provided by the utility model, a length indicating part is arranged along the circumferential side of the flexible cladding, and the length indicating part is configured to indicate the length of the pole piece structure formed on the compression roller body.
[0019] As a preferred scheme of the compression roller mechanism provided by the utility model, the flexible cladding is arranged as an elastic layer.
[0020] According to another aspect of the utility model, a compression roller device is provided, which comprises an auxiliary compression roller mechanism and the compression roller mechanism according to any one of the above schemes, the compression roller mechanism and the auxiliary compression roller mechanism are arranged at intervals, the pole piece structure is arranged between the compression roller mechanism and the auxiliary compression roller mechanism, and the auxiliary compression roller mechanism and the compression roller mechanism can compress the pole piece structure on the opposite sides of the pole piece structure.
[0021] The utility model has the advantages of:
[0022] The compression roller mechanism provided by the utility model discloses a compression roller body and a flexible cladding. The flexible cladding is wrapped on the circumferential side of the compression roller body. The pole piece structure can be formed on the flexible cladding. By setting the flexible cladding, the friction between the pole piece structure can be increased, so that the pole piece structure can be flattened and compressed. The flexible cladding is provided with a recess along the circumference of the compression roller body. The pole lug of the pole piece structure corresponds to and can be accommodated in the recess. The pole body of the pole piece structure corresponds to and is shaped on the protruding part of the flexible cladding. By the recess, the pole lug of the pole piece structure can be avoided, and the problem of wrinkles of the pole lug of the pole piece structure in the compression process can be avoided. Therefore, the production quality of the pole piece structure is improved, the scrap rate of the pole piece structure is reduced, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the utility model and the drawings without creative labor.
[0024] Figure 1 It is the structure schematic diagram of the compression roller mechanism provided by the embodiment one of the utility model;
[0025] Figure 2 It is the partial schematic diagram of the compression roller mechanism provided by the embodiment one of the utility model;
[0026] Figure 3 It is the schematic diagram of the transition forming part provided by the embodiment one of the utility model;
[0027] Figure 4 It is the schematic diagram of the transition forming part provided by the embodiment two of the utility model.
[0028] In the drawings:
[0029] 100, compression roller body;
[0030] 200, flexible cladding; 210, annular groove; 220, protruding part;
[0031] 300, transition forming part; 310, circular arc forming surface; 320, different forming surface; 321, first arc-shaped part; 322, second arc-shaped part. DETAILED DESCRIPTION
[0032] The technical scheme of the utility model will be further illustrated by specific embodiments in combination with the drawings.
[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0034] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0035] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0036] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0037] In the description of the present application, it should also be noted that, unless otherwise specified and limited, the terms "set", "connected", "fixed" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0038] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, the first feature "on", "above" and "on the surface" of the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "under" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.
[0039] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.
[0040] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0041] Embodiment one
[0042] The present application provides a compression roller mechanism and a compression roller device. The compression roller device comprises an auxiliary compression roller mechanism and the compression roller mechanism provided by the present application. The compression roller mechanism and the auxiliary compression roller mechanism are arranged in parallel and spaced apart from each other, the pole piece structure is arranged between the compression roller mechanism and the auxiliary compression roller mechanism, and the auxiliary compression roller mechanism and the compression roller mechanism can press the pole piece structure on both sides of the pole piece structure to make the layers of the pole piece structure composite.
[0043] Figure 1 The structure schematic diagram of the compression roller mechanism provided by the present application is shown; Figure 2 The partial schematic diagram of the compression roller mechanism provided by the present application is shown. Referring to Figure 1 And Figure 2The pressing roller mechanism provided by the embodiment comprises a pressing roller body 100 and a flexible cladding 200. The flexible cladding 200 is wrapped around the circumferential side of the pressing roller body 100, and the pole piece structure can be formed on the outer circumferential side of the flexible cladding 200. By arranging the flexible cladding 200, the friction between the pole piece structure and the flexible cladding 200 can be increased, so that the pole piece structure can be flattened during the forming process. The flexible cladding 200 is provided with a recess along the circumference of the pressing roller body 100, the pole lug of the pole piece structure corresponds to and can be accommodated in the recess, and the pole body of the pole piece structure corresponds to and is shaped on the protruding portion 220 of the flexible cladding 200. By means of the recess, the pole lug of the pole piece structure can be avoided, and the problem of wrinkles in the pole lug of the pole piece structure during the pressing process can be avoided, thereby improving the production quality of the pole piece structure, reducing the scrap rate of the pole piece structure, and reducing the production cost.
[0044] It should be noted that the thickness of the flexible cladding 200 and the depth of the recess can be selected according to the pole piece structure in actual production. For example, in the embodiment, the thickness of the flexible cladding 200 is specifically 5mm, and the depth of the recess is specifically 2mm.
[0045] Specifically, the recess is formed by an annular groove 210 arranged on the flexible cladding 200. The flexible cladding 200 is provided with at least two annular grooves 210 arranged along the axial direction of the pressing roller body 100. In the embodiment, as shown in Figure 1 , the flexible cladding 200 is specifically provided with three annular grooves 210, which are arranged at the two ends and the middle position of the flexible cladding 200. The annular groove 210 can also be arranged only two, and the two annular grooves 210 are specifically arranged at the two ends of the flexible cladding 200. In other embodiments, the number of annular grooves 210 can also be selected according to actual needs, which is not limited in the embodiment.
[0046] More specifically, the flexible cladding 200 has elasticity. In the embodiment, the flexible cladding 200 can be formed by wrapping rubber on the circumferential side of the pressing roller body 100. The elasticity of the flexible cladding 200 can protect the pole piece structure when the auxiliary pressing roller mechanism and the pressing roller mechanism press the pole piece structure, preventing the pole piece structure from being damaged due to excessive pressure applied by the auxiliary pressing roller mechanism and the pressing roller mechanism.
[0047] More specifically, a length indicating portion is arranged along the circumferential side of the flexible cladding 200. The length indicating portion is configured to indicate the length of the pole piece structure formed on the pressing roller body 100. In the embodiment, the length indicating portion can be a scale arranged along the circumference of the flexible cladding 200.
[0048] More specifically, the pressing roller mechanism further comprises a heating member arranged in the pressing roller body 100 and capable of heating the pressing roller body 100. By arranging the heating member, the temperature of the pole piece body can be raised to improve the bonding efficiency and effect of the layers of the pole piece body. In the embodiment, the heating member can be an electric heating wire or the like, and the specific structure of the heating member is not limited in the embodiment as long as the heating member can raise the temperature of the pressing roller body 100.
[0049] With reference to Figure 1 and Figure 2 , the flexible cladding 200 forms a transition forming portion 300 at the joint of the recess and the protruding portion 220, and the root of the tab can form an arc transition at the transition forming portion 300 to avoid the root of the joint of the tab and the pole piece body from having an angle, thereby avoiding the problem of stress concentration at the root of the tab.
[0050] Figure 3 A schematic view of the transition forming portion provided in the embodiment of the utility model is shown. With reference to Figure 2 and Figure 3 In the embodiment, the transition forming portion 300 comprises a circular arc forming surface 310 which is jointed to the upper end surface of the protruding portion 220 and the bottom of the annular groove 210, and the circular arc forming surface 310 protrudes towards the direction of the bottom of the annular groove 210. In the embodiment, the length L of the setting range of the transition forming portion 300 along the axial direction of the pressing roller body 100 is about 5 mm, and the radius of the circular arc of the circular arc forming surface 310 is specifically 9 mm. In other embodiments, the length L of the setting range of the transition forming portion 300 along the axial direction of the pressing roller body 100 and the radius of the circular arc of the circular arc forming surface 310 can be selected according to the actual thickness of the tab, and the specific values are not described herein.
[0051] Embodiment two
[0052] The embodiment provides a pressing roller mechanism. The difference between the embodiment and embodiment one is only the specific shape of the transition forming portion 300.
[0053] Figure 4 A schematic view of the transition forming portion provided in the embodiment two of the utility model is shown. With reference to Figure 4 In the embodiment, the transition forming portion 300 comprises a special forming surface 320. The special forming surface 320 comprises a first arc-shaped portion 321 and a second arc-shaped portion 322 which are jointed to each other, the first arc-shaped portion 321 is jointed to the upper end surface of the protruding portion 220, the second arc-shaped portion 322 is jointed to the bottom of the annular groove 210, the first arc-shaped portion 321 protrudes towards the direction away from the bottom of the annular groove 210, and the second arc-shaped portion 322 protrudes towards the direction of the bottom of the annular groove 210.
[0054] Specifically, the radius of curvature of the first arc-shaped portion 321 is equal to the radius of curvature of the second arc-shaped portion 322. Through the above arrangement, the stress of the tab at the root portion can be made more uniform. In the present embodiment, the radius of curvature of the first arc-shaped portion 321 and the radius of curvature of the second arc-shaped portion 322 are both about 1 mm. In other embodiments, the radius of curvature of the first arc-shaped portion 321 and the radius of curvature of the second arc-shaped portion 322 can also be selected according to the actual thickness of the tab, and the specific values are not described herein.
[0055] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.
Claims
1. A press roller mechanism, characterized by The application relates to a compression roller mechanism. The compression roller mechanism comprises: a compression roller body (100); a flexible cladding (200) wrapped around the compression roller body (100), the flexible cladding being provided with: a protrusion (220) arranged along the circumference of the compression roller body (100) and corresponding to a pole body of a pole piece structure; 2. The press roll mechanism of claim 1, wherein, a recess arranged along the circumference of the compression roller body (100) and corresponding to and accommodating a lug of the pole piece structure.
3. The press roll mechanism of claim 2, wherein, The junction of the recess and the protrusion (220) forms a transition profile (300), and the root of the lug can form an arc transition at the transition profile (300).
4. The press roll mechanism of claim 2, wherein, The transition profile (300) comprises a circular arc profile (310) connected to the upper end surface of the protrusion (220) and the bottom of the recess, and the circular arc profile (310) protrudes towards the direction where the bottom of the recess is located.
5. The press roll mechanism of claim 4, wherein, The transition profile (300) comprises a differentially formed profile (320), and the differentially formed profile (320) comprises a first arc-shaped portion (321) and a second arc-shaped portion (322) connected to each other, the first arc-shaped portion (321) is connected to the upper end surface of the protrusion (220), and the second arc-shaped portion (322) is connected to the bottom of the recess, the first arc-shaped portion (321) protrudes towards the direction away from the bottom of the recess, and the second arc-shaped portion (322) protrudes towards the direction where the bottom of the recess is located.
6. The press roll mechanism of claim 1, wherein, The arc radius of the first arc-shaped portion (321) is equal to the arc radius of the second arc-shaped portion (322).
7. The press roll mechanism according to any one of claims 1 to 6, characterized in that The recess comprises at least two annular grooves (210) arranged along the axial direction of the compression roller body (100).
8. The press roll mechanism according to any one of claims 1 to 6, characterized in that The compression roller mechanism further comprises a heating member arranged in the compression roller body (100) and capable of heating the compression roller body (100).
9. The press roll mechanism according to any one of claims 1 to 6, characterized in that A length indicating portion is arranged along the circumference of the flexible cladding (200), and the length indicating portion is configured to indicate the length of the pole piece structure formed on the compression roller body (100).
10. A press roller device, characterized by The flexible cladding (200) is arranged as an elastic layer. The application further relates to an auxiliary compression roller mechanism and the compression roller mechanism as claimed in any one of claims 1-9, the compression roller mechanism and the auxiliary compression roller mechanism are arranged in a spaced manner, the pole piece structure is arranged between the compression roller mechanism and the auxiliary compression roller mechanism, and the auxiliary compression roller mechanism and the compression roller mechanism can compress the pole piece structure on opposite sides of the pole piece structure.