Tab gasket assembly, shaft sleeve, special-shaped roller and roller press

Abstract

The utility model relates to the technical field of battery production, in particular to a tab gasket assembly, a shaft sleeve, a special-shaped roller and a roller press. The tab gasket assembly comprises an arc-shaped first tab gasket, an arc-shaped second tab gasket and a fixing piece. The first tab gasket and the second tab gasket are fixedly connected and combined by the fixing piece to form an annular tab gasket, and the annular tab gasket is fixedly connected to a roller. Wherein the inner circumferential surface of the annular tab gasket is used for being in contact connection with a roller, and the outer circumferential surface of the annular tab gasket is used for being propped against a coating-free tab so as to support the coating-free tab. Therefore, the problem that the tab is easy to wrinkle in the battery production process is relieved. And in the process of disassembling the tab gasket assembly, the roll shaft does not generate glue marks, cleaning is convenient, compared with the prior art, disassembling and assembling are faster, the working efficiency and the productivity are greatly improved, and the excellent universality and practicability are achieved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and more specifically, to an electrode pad assembly, bushing, shaped roller and roller press. Background Technology

[0002] In the continuous positive and negative electrode production process in battery cell factories, electrode rolling is an important step. During this process, there is a certain thickness difference between the coated electrode and the uncoated tab. During the rolling process, the coated area of ​​the electrode and the uncoated tab area are subjected to unbalanced forces, and the elongation and deformation of the coated electrode and the tab are inconsistent, which makes it very easy for irreversible wavy wrinkles to appear at the tab.

[0003] In existing technologies, the main method is to use a combination of a flattening mechanism at the front and rear of a roller press and a tension roller to apply Teflon tape, thereby aligning the extension direction of the tabs and the electrode sheet and mitigating wrinkles. However, applying Teflon tape to the surface of the flattening roller is time-consuming and labor-intensive. When changing the roller press electrode roll model or adjusting the Teflon tape application position, the original Teflon tape must be removed and reapplied, which severely affects the roller press capacity. Furthermore, since Teflon application requires manual application, it is difficult to control the number of Teflon layers and the relative position of each layer, resulting in poor extension effect and even poor imprinting on the electrode roll surface, affecting product quality.

[0004] To address the aforementioned issues, Chinese patent application CN202123389702.8, filed on December 29, 2021, provides a gasket assembly. This assembly uses two semi-circular gaskets connected by a locating pin to form an annular gasket, which is then fixed to a tension roller, replacing Teflon tape. The gasket has grooves, and adhesive is added to these grooves to secure it to the tension roller. However, this method easily leaves adhesive residue, increasing cleaning workload. Furthermore, adhesive fixation requires waiting for the adhesive to cure, which takes time, and the adhesive is prone to aging and wear during roller rotation. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the aforementioned problems, this utility model provides an electrode tab gasket assembly, a bushing, a shaped roller, and a roller press.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, in a first aspect, this utility model provides an electrode pad assembly, comprising:

[0009] Arc-shaped first pole ear pad;

[0010] Arc-shaped second pole ear pad;

[0011] A fixing member is used to fixedly connect the first lug gasket and the second lug gasket to form a ring-shaped lug gasket, and is fixedly connected to the roller;

[0012] The inner circumferential surface of the ring-shaped lug gasket is used to contact and connect with the roller, and the outer circumferential surface of the ring-shaped lug gasket is used to abut against the uncoated lug to support the uncoated lug.

[0013] As a further improvement of the above technical solution:

[0014] In combination with the first aspect, in a possible implementation, the first lug gasket and the second lug gasket are in a semi-ring shape.

[0015] In combination with the first aspect, in a possible implementation, a through-thread hole is arranged at a middle position of the first lug gasket and the second lug gasket, the fixing member includes a first fixing member, and the first fixing member is connected and fixed to the roller through the through-thread hole, wherein the first fixing member is a stop screw.

[0016] In combination with the first aspect, in a possible implementation, the first lug gasket and the second lug gasket are connected by welding or a fastener.

[0017] In combination with the first aspect, in a possible implementation, the fixing member includes a second fixing member, both ends of the first lug gasket and the second lug gasket are provided with corresponding through-thread holes, and the first lug gasket and the second lug gasket are connected by the second fixing member penetrating the through-thread holes.

[0018] To achieve the above object, in a second aspect, the application further provides a combined shaft sleeve, which includes a center shaft sleeve, two locking shaft sleeves, and at least one lug gasket assembly according to the first aspect.

[0019] In combination with the second aspect, in a possible implementation, the combined shaft sleeve further includes an edge shaft sleeve arranged between the lug gasket assembly and the locking shaft sleeve.

[0020] To achieve the above object, in a third aspect, the application further provides a profiled roller, which includes a roller and a combined shaft sleeve according to the second aspect and sleeved on the roller.

[0021] In combination with the third aspect, in a possible implementation, the center shaft sleeve and the pole coating area abut against each other and have the same length, and the lug gasket assembly and the empty pole lug area abut against each other and have the same length.

[0022] To achieve the above-mentioned purposes, in a fourth aspect, the application further provides a roller press, which comprises the profiled roller provided in the third aspect.

[0023] (III) Advantages

[0024] Compared with the prior art, the application has the following advantages:

[0025] The first lug gasket and the second lug gasket are provided with a through-threaded hole at a middle position, the fixing member comprises a first fixing member, and the first fixing member is connected and fixed to the roller through the through-threaded hole, wherein the first fixing member is a set screw. The lug gasket assembly and the roller can form a stable and rigid connection, the connection is tight, and the lug gasket assembly is more durable.

[0026] The first lug gasket and the second lug gasket are connected and combined by the fixing member to form a ring-shaped lug gasket, and the lug gasket is simple and convenient to disassemble and operate.

[0027] The application provides a combined shaft sleeve, which comprises a center shaft sleeve, two locking shaft sleeves, and at least one lug gasket assembly provided in the first aspect, and the lug gasket assembly is arranged between the center shaft sleeve and the locking shaft sleeve. The combined shaft sleeve can be combined in various ways, and can be adapted to different lug production. Through the combined shaft sleeve, the lug gasket assembly can be designed as a shaft sleeve, and the lug gasket can be designed to be thicker, thereby being more durable and reliable.

[0028] Other features and advantages of the application will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A cross-sectional view of a lug gasket assembly provided in the embodiment;

[0030] Figure 2 A cross-sectional view of a profiled roller provided in the embodiment.

[0031] LEGEND

[0032] 1: first lug gasket; 2: second lug gasket; 301: first fixing member; 302: second fixing member; 4: ring-shaped lug gasket; 5: lug gasket assembly; 6: combined shaft sleeve; 601: center shaft sleeve; 602: locking shaft sleeve; 603: edge shaft sleeve. DETAILED DESCRIPTION

[0033] In order to better explain the utility model, for the convenience of understanding, the utility model is described in detail below by specific embodiments in combination with the drawings.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0035] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0036] In the utility model, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; "connection" can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] As shown in the embodiment, the utility model provides a kind of tab gasket assembly 5, which comprises: arc-shaped first tab gasket 1, arc-shaped second tab gasket 2 and fixing piece; Figure 1 The fixing piece is used to fixedly connect and combine the first tab gasket 1 and the second tab gasket 2 to form an annular tab gasket 4, and is fixedly connected to the roller. The fixing piece refers to a mechanical element for fixing two or more components. The first tab gasket 1 and the second tab gasket 2 are fixedly connected and combined to form an annular tab gasket 4, which can be more conveniently installed on the roller by connection and combination, and the mechanical fixing of the fixing piece makes the roller connection fixed relationship more stable and durable.

[0038]

[0039] ​The inner circumferential surface of the annular tab gasket 4 is used to contact and connect with the roller, and the outer circumferential surface of the annular tab gasket 4 is used to abut against the uncoated tab to support the uncoated tab. By abutting against the uncoated tab, the tab is raised to the same level as the coated tab, and when the tab is pressed on the roller, the tab is aligned with the extension direction of the coated tab, thereby reducing the generation of wrinkles.

[0040] Specifically, in the present embodiment, the first tab gasket 1 and the second tab gasket 2 are in a semi-ring shape. When the tab gasket assembly 5 is installed or dismounted on the roller, the first tab gasket 1 and the second tab gasket 2 do not need to be deformed to be assembled or assembled by axial nesting, and can be directly assembled and dismounted in the radial direction of the flattening roller, which is very convenient.

[0041] Optionally, the first tab gasket 1 and the second tab gasket 2 are provided with a through threaded hole (reference numeral) at the middle position, and the fixing member includes a first fixing member 301 connected and fixed to the roller through the through threaded hole, wherein the first fixing member 301 is a stop screw. The number of through threaded holes can be set according to actual conditions, which can be one, two or more than two, and the number of through threaded holes in the present embodiment is one. In the present embodiment, the first fixing member 301 passes through the threaded hole, and the end of the first fixing member 301 is tightly pressed on the surface of the roller, and the stable fixation is realized by the tight pressing fixation. In other embodiments, the first fixing member 301 passes through the threaded hole and then turns into the threaded hole at the corresponding position of the roller, so as to tightly connect the shaft and the shaft sleeve together, which has strong stability.

[0042] Preferably, the connection between the first tab gasket 1 and the second tab gasket 2 is a buckle connection or a fastener connection. Both the buckle connection and the fastener connection are detachable connections, which can be conveniently disassembled and assembled.

[0043] Optionally, in the embodiment, the fixing member includes a second fixing member 302, both ends of the first tab washer 1 and the second tab washer 2 are provided with corresponding through screw holes, and the second fixing member 302 is used to connect the two through the screw holes. The second fixing member 302 can be set according to actual conditions, for example, it can be a bolt or a screw. Specifically, in the embodiment, the second fixing member 302 is a screw. In the embodiment, the first tab washer 1 and the second tab washer 2 are completely the same in size and structure, one screw hole of the first tab washer 1 and the second tab washer 2 is a screw hole, and the other screw hole is a fastening screw hole. The screw hole is a channel hole through which the screw passes, and the fastening screw hole is a hole provided with threads to cooperate with the screw to achieve fastening. Through such a design, the first tab washer 1 or the second tab washer 2 does not need to be designed or produced separately by using a mold during production, which improves the production efficiency of the tab washer assembly 5 and reduces the production cost of the tab washer assembly 5. In other embodiments, the screw holes of the first tab washer 1 are all screw holes, and the screw holes of the second tab washer 2 are all fastening screw holes.

[0044] In another aspect, the embodiment provides a combined shaft sleeve 6 including a center shaft sleeve 601, two locking shaft sleeves 602, and the tab washer assembly 5 provided by the embodiment. The tab washer assembly 5 is arranged between the center shaft sleeve 601 and the locking shaft sleeve 602. In the embodiment, the material of the tab washer assembly can be set according to actual conditions, for example, it can be high-alloy cold-rolled roller steel, molybdenum steel, alloy steel, or hard alloy. Specifically, in the embodiment, the tab washer assembly is alloy steel, which has high strength, excellent wear resistance, and corrosion resistance. The center shaft sleeve 601 refers to a shaft sleeve located at the center of the roller. The locking shaft sleeve 602 is a device used to fasten the shaft sleeve on the shaft. Its main function is to prevent the shaft sleeve from moving or shaking during use, thereby ensuring the stable operation of the equipment and prolonging the service life. Through the locking shaft sleeve 602, the shaft and the shaft sleeve can be firmly connected, improving the overall performance and reliability of the equipment.

[0045] Preferably, in the embodiment, the tab washer assembly 5 is combined with other shaft sleeves as a shaft sleeve. The thickness of the tab washer assembly 5 matches that of other shaft sleeves, and it is thicker than traditional washers, so it is more durable. Specifically, the thickness of the tab washer assembly 5 is greater than that of the center shaft sleeve 601, and the difference in thickness between the two corresponds to the difference in thickness between the coated tab and the uncoated tab, thereby ensuring that the extension direction of the coated tab corresponds to that of the tab, and relieving the generation of wrinkles.

[0046] Optionally, the combined shaft sleeve 6 provided by the embodiment further comprises an edge shaft sleeve 603 arranged between the tab gasket assembly 5 and the locking shaft sleeve 602. The edge shaft sleeve 603 is a shaft sleeve arranged at the edge position of the roller, which is used to protect the edge area of the roller shaft and reduce the wear. The number of the edge shaft sleeve 603 can be set according to the actual situation, which can be one, two or more than two. In the embodiment, the number of the edge shaft sleeve 603 is two.

[0047] As shown in Figure 2 The third aspect of the embodiment provides a profiled roller, which comprises a roller and the combined shaft sleeve 6 provided by the embodiment arranged on the roller. The profiled roller refers to a roller provided with a profiled shaft sleeve.

[0048] Specifically, the third aspect of the embodiment provides a profiled roller, the center shaft sleeve 601 abuts against the tab coating area and has the same length, and the tab gasket assembly 5 abuts against the empty tab area and has the same length. The shaft sleeves with different sizes can be used to adjust the production line to adapt to the production needs of different sizes of batteries, without the need to make large-scale modification to the whole production line, thereby reducing the adjustment cost and time.

[0049] The fourth aspect of the embodiment provides a calender, which comprises the profiled roller provided by the embodiment. In the embodiment, the profiled roller is a tension roller before and after rolling, and in other embodiments, the profiled roller is a tab extrusion roller.

[0050] The above is only a specific application example of the utility model, which does not constitute any limitation on the protection scope of the utility model. In addition to the above embodiments, the utility model can also have other implementation manners. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the utility model claimed for protection.

Claims

1. A tab gasket assembly, characterized by, The application relates to a polar lug gasket assembly. The first polar lug gasket is arc-shaped. The second polar lug gasket is arc-shaped. The fixing member is used for fixedly connecting the first polar lug gasket and the second polar lug gasket to form a ring-shaped polar lug gasket, and is fixedly connected to a roller. The inner circumferential surface of the ring-shaped polar lug gasket is used for contact connection with the roller, and the outer circumferential surface of the ring-shaped polar lug gasket is used for abutting with a non-coated polar lug to support the non-coated polar lug.

2. The tab gasket assembly of claim 1, wherein, The first polar lug gasket and the second polar lug gasket are half-ring-shaped.

3. The tab gasket assembly of claim 1, wherein, Through holes are arranged in the middle positions of the first polar lug gasket and the second polar lug gasket, and the fixing member comprises a first fixing member which is connected and fixed to the roller through the through holes.

4. The tab patch assembly of claim 1, wherein, The first polar lug gasket and the second polar lug gasket are connected through buckle connection or fastener connection.

5. The tab-lam component of claim 3, wherein The fixing member comprises a second fixing member, and the two ends of the first polar lug gasket and the second polar lug gasket are provided with corresponding through screw holes, and the first polar lug gasket and the second polar lug gasket are connected through the second fixing member penetrating the through screw holes.

6. A combination bush, characterised in that, The application further relates to a combined shaft sleeve.

7. The combination bushing of claim 6, wherein, The application further relates to a combined shaft sleeve. The application further relates to a combined shaft sleeve.

8. A profiled roll characterized in that The application further relates to a combined shaft sleeve.

9. A profiled roll according to claim 8, characterised in that The application further relates to a combined shaft sleeve.

10. A roll press characterized by, The roller press comprises the special-shaped roller.

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