Current collector tension adjusting device for lithium battery coating

Abstract

The utility model discloses a current collector tension adjusting device for coating a lithium battery. The current collector tension adjusting device comprises a mounting frame, the distance adjusting structure is arranged on the mounting frame; the conveying roller structure comprises at least two conveying roller sets, and the distance adjusting structure is used for adjusting the distance between every two adjacent conveying roller sets in the conveying direction of the conveyed current collector; the conveying roller set comprises a conveying roller, a flattening roller and an elastic unit, and the elastic unit drives the flattening roller to abut against the conveying roller. According to the utility model, the spacing adjusting structure and the elastic unit are arranged, so that the spacing between the two adjacent conveying roller groups in the conveying direction of the conveyed current collector can be adjusted through the spacing adjusting structure, and the tension can be adjusted; and in addition, in the distance adjusting process, the flattening roller can be driven by the elastic unit to keep abutting against the conveying roller, the phenomenon that the current collector is wrinkled due to unbalanced or insufficient tension is avoided, and the overall quality and performance of a product are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a lithium battery coating current collector tension adjusting device. BACKGROUND

[0002] At present, the current collector refers to the structure or part that gathers current, and mainly refers to metal foils such as copper foils and aluminum foils on lithium ion batteries. There is a coating process in the production and manufacturing process of lithium battery electrodes, and the quality of the coating directly affects the quality of the finished lithium battery. The quality of the coating not only depends on the quality of the incoming material (lithium battery slurry), but also is greatly related to the tension control of the coating machine on the current collector.

[0003] In the prior art, when the current collector is coated and transported, the spacing of the current collector needs to be adjusted according to the actual application, so as to adjust the tension of the current collector. However, in the prior art, the current collector has no flattening structure in the spacing adjustment process, which can easily cause wrinkles in the current collector during transportation due to uneven or insufficient tension. These wrinkles not only damage the flatness of the surface of the current collector, affect the uniformity and adhesion of the subsequent coating, but also can cause waste of coating materials and decrease production efficiency. Moreover, the existence of wrinkles can prevent the coating process of the current collector surface from being fully performed, thereby affecting the overall quality and performance of the product. SUMMARY

[0004] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a current collector tension adjusting device for lithium battery coating, which is provided with a spacing adjustment structure and an elastic unit. The spacing adjustment structure can adjust the spacing between the adjacent two groups of conveying rollers in the conveying direction of the conveyed current collector to adjust the tension. Moreover, the flattening roller can be driven by the elastic unit to abut against the conveying roller during spacing adjustment, so as to prevent wrinkles from being generated in the current collector due to uneven or insufficient tension, and ensure the overall quality and performance of the product.

[0005] The utility model adopts the technical scheme of:

[0006] A current collector tension adjusting device for lithium battery coating, comprising:

[0007] a mounting frame;

[0008] a spacing adjustment structure arranged on the mounting frame;

[0009] a conveying roller structure comprising at least two groups of conveying rollers, and the spacing adjustment structure is used to adjust the spacing between the adjacent two groups of conveying rollers in the conveying direction of the conveyed current collector;

[0010] The conveying roller set comprises a conveying roller, a flattening roller and an elastic unit, the elastic unit drives the flattening roller to abut against the conveying roller.

[0011] In a preferred embodiment, the current collector is conveyed from the rear side of the mounting frame to the front side of the mounting frame, and the conveying roller structure comprises two groups of conveying roller sets, one group of conveying roller sets is arranged on the front side of the mounting frame, and the other group of conveying roller sets is arranged on the rear side of the mounting frame.

[0012] In a preferred embodiment, the spacing adjustment structure comprises a spacing adjustment element and a driving element, the driving element is in transmission connection with the spacing adjustment element, and the driving element drives the conveying roller set to move through the spacing adjustment element.

[0013] In a preferred embodiment, the spacing adjustment structure further comprises a spacing adjustment frame, a limiting sliding groove is formed in the spacing adjustment frame, the conveying roller set is in sliding fit with the limiting sliding groove, and the driving element drives the conveying roller set to slide along the limiting sliding groove through the spacing adjustment element.

[0014] In a preferred embodiment, the conveying roller structure comprises two groups of conveying roller sets, and the two groups of conveying roller sets are sleeved on the spacing adjustment element.

[0015] The two ends of the spacing adjustment element are provided with threads, the rotation directions of the threads of the two ends are opposite, one group of conveying roller sets is in threaded connection with one end of the spacing adjustment element, and the other group of conveying roller sets is in threaded connection with the other end of the spacing adjustment element.

[0016] The spacing driving element is a motor, the driving element drives the spacing adjustment element to rotate, so as to drive the two groups of conveying roller sets to move close to or away from each other along the spacing adjustment element.

[0017] In a preferred embodiment, the conveying roller set further comprises a first mounting seat and a second mounting seat, the second mounting seat is arranged on the first mounting seat, and the spacing adjustment element is in transmission connection with the first mounting seat.

[0018] The conveying roller is in rotational connection with the first mounting seat, the flattening roller is in rotational connection with the second mounting seat, the elastic unit is arranged between the first mounting seat and the second mounting seat, the second mounting seat is movably connected with the first mounting seat through the elastic unit, and the elastic unit drives the flattening roller to abut against the conveying roller through the second mounting seat.

[0019] The driving element drives the first mounting seat, the second mounting seat, the elastic unit, the conveying roller and the flattening roller to move together through the spacing adjustment element.

[0020] In a preferred embodiment, the first mounting seat and the second mounting seat are both in the shape of "n", and the first mounting seat is sleeved on the outside of the second mounting seat.

[0021] In a preferred embodiment, the elastic unit comprises an elastic element and a transmission rod, one end of the transmission rod is fixedly connected with the elastic element, and the other end of the transmission rod is fixedly connected with the second mounting seat.

[0022] The first mounting seat is provided with a hollow sleeve for accommodating the elastic element, and is also provided with a through hole for penetrating the transmission rod, the hollow sleeve and the through hole are in communication with each other, and the elastic element drives the flattening roller to abut against the conveying roller through the transmission rod and the second mounting seat.

[0023] In a preferred embodiment, the transmission rod is in the shape of "T", and the end of the transmission rod is provided with a first limiting step.

[0024] The inner diameter of the hollow sleeve is greater than the inner diameter of the through hole, and a second limiting step for cooperating with the first limiting step is formed between the hollow sleeve and the through hole.

[0025] In a preferred embodiment, the elastic element is a spring.

[0026] In summary, the utility model has the following technical effects: the utility model is provided with the spacing adjusting structure and the elastic unit, not only can realize the spacing adjustment between the adjacent two groups of conveying roller groups in the conveying direction of the conveyed current collector by the spacing adjusting structure, so as to adjust the tension, but also can drive the flattening roller to abut against the conveying roller by the elastic unit in the process of spacing adjustment, avoid the wrinkles of the current collector due to the unbalanced or insufficient tension, and ensure the overall quality and performance of the product. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is an external structure schematic view of the utility model embodiment;

[0028] Figure 2 It is an internal structure schematic view of the utility model embodiment;

[0029] Figure 3 It is a partial enlarged schematic view of the utility model embodiment Figure 2 .

[0030] Among them, the meaning of the sign is as follows:

[0031] 10, mounting frame, 20, spacing adjusting structure, 201, spacing adjusting element, 202, driving element, 203, spacing adjusting frame, 204, limiting sliding slot, 30, conveying roller group, 301, conveying roller, 302, flattening roller, 303, elastic unit, 3031, elastic element, 3032, transmission rod, 3033, first limiting step, 3034, second limiting step, 304, first mounting seat, 305, second mounting seat, 306, hollow sleeve, 307, through hole. DETAILED DESCRIPTION

[0032] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0033] In the description of the present application, it should be pointed out that the directions or position relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application in that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0035] Referring to Figures 1-3 The present application discloses a kind of lithium battery coating with current collector tension adjusting device, comprising: mounting bracket 10;Spacing adjustment structure 20, spacing adjustment structure 20 is set on mounting bracket 10;Conveying roller structure, conveying roller structure includes at least two groups of conveying roller group 30, spacing adjustment structure 20 is used to adjust the spacing between adjacent two groups of conveying roller group 30 in the conveying direction of the conveyed current collector;Conveying roller group 30 includes conveying roller 301, flattening roller 302 and elastic unit 303, elastic unit 303 drives flattening roller 302 and conveying roller 301 abuts.

[0036] When using, current collector is placed following conveying roller group 30, and current collector is placed between conveying roller 301 and flattening roller 302, flattening roller 302 is elastically pressed on conveying roller 301 under the driving of elastic unit 303, the pressing force of flattening roller 302 can be controlled by setting the elastic force of elastic unit 303, so that flattening roller 302 can avoid current collector to produce wrinkle, also do not affect the conveying of current collector.

[0037] The present application is provided with spacing adjustment structure 20 and elastic unit 303, not only can realize the spacing adjustment between adjacent two groups of conveying roller group 30 in the conveying direction of the conveyed current collector by spacing adjustment structure 20, to carry out tension adjustment;And in the process of spacing adjustment, flattening roller 302 can also be driven by elastic unit 303 to keep abutting with conveying roller 301, avoid current collector to produce wrinkle due to the imbalance or deficiency of tension, guarantee the overall quality and performance of product.

[0038] In the embodiment of the utility model, the transported current collector is transported from the rear side of the mounting frame 10 to the front side of the mounting frame 10, the conveying roller structure comprises two groups of conveying roller groups 30, one of the two groups of conveying roller groups 30 is arranged at the front side of the mounting frame 10, and the other group of conveying roller groups 30 is arranged at the rear side of the mounting frame 10.

[0039] That is to say, the two groups of conveying roller groups 30 are arranged along the conveying direction of the transported current collector, and the two groups of conveying roller groups 30 are arranged in a diagonal line; the two groups of conveying roller groups 30 are arranged on the same side of the mounting frame 10, and the diagonal arrangement of the two groups of conveying roller groups 30 is more convenient for the transportation of the current collector.

[0040] In the embodiment of the utility model, the spacing adjustment structure 20 comprises a spacing adjustment element 201 and a driving element 202, the driving element 202 is in transmission connection with the spacing adjustment element 201, and the driving element 202 drives the conveying roller group 30 to move through the spacing adjustment element 201.

[0041] In the embodiment of the utility model, the spacing adjustment structure 20 further comprises a spacing adjustment frame 203, a limiting sliding groove 204 is formed in the spacing adjustment frame 203, the conveying roller group 30 is in sliding connection with the limiting sliding groove 204, and the driving element 202 drives the conveying roller group 30 to slide along the limiting sliding groove 204 through the spacing adjustment element 201.

[0042] Preferably, the two ends of the conveying roller group 30 are provided with spacing adjustment frames 203, and the two spacing adjustment frames 203 are symmetrically arranged along the central axis of the conveying roller group 30; the two spacing adjustment frames 203 simultaneously adjust the spacing of the two ends of the conveying roller group 30, so that the balance of the conveying roller group 30 is ensured.

[0043] In the embodiment of the utility model, the conveying roller structure comprises two groups of conveying roller groups 30, and the two groups of conveying roller groups 30 are sleeved on the spacing adjustment element 201; the two ends of the spacing adjustment element 201 are provided with threads, the rotation directions of the threads at the two ends of the spacing adjustment element 201 are opposite, one of the two groups of conveying roller groups 30 is in threaded connection with one end of the spacing adjustment element 201, and the other group of conveying roller groups 30 is in threaded connection with the other end of the spacing adjustment element 201; the spacing driving element 202 is a motor, and the driving element 202 drives the spacing adjustment element 201 to rotate through rotation, so as to drive the two groups of conveying roller groups 30 to move close to or away from each other along the spacing adjustment element 201.

[0044] Specifically, the spacing adjustment element 201 is a double-end screw rod.

[0045] In the embodiment of the utility model, conveying roller group 30 still includes first mounting seat 304 and second mounting seat 305, second mounting seat 305 sets up on first mounting seat 304, and interval adjusting element 201 is transmission connected with first mounting seat 304, conveying roller 301 is rotationally connected with first mounting seat 304, flattening roller 302 is rotationally connected with second mounting seat 305, elastic unit 303 is arranged between first mounting seat 304 and second mounting seat 305, second mounting seat 305 is movably connected with first mounting seat 304 through elastic unit 303, elastic unit 303 drives flattening roller 302 and conveying roller 301 abutment through second mounting seat 305, drive element 202 drives first mounting seat 304, second mounting seat 305, elastic unit 303, conveying roller 301 and flattening roller 302 together movement through interval adjusting element 201.

[0046] Because set up first mounting seat 304 and second mounting seat 305, flattening roller 302 can set up in the arbitrary one direction of conveying roller 301 periphery, thereby can from different angles with current collector press in conveying roller 301.

[0047] First mounting seat 304 and second mounting seat 305 can only be movably connected through elastic unit 303, the middle part of first mounting seat 304 and the middle part of second mounting seat 305 can also be movably connected on the basis of elastic unit 303, the side of first mounting seat 304 and the side of second mounting seat 305 are slidably connected, to enhance the installation stability of second mounting seat 305.

[0048] Further, conveying roller 301 is rotationally connected with first mounting seat 304 through bearing, flattening roller 302 is rotationally connected with second mounting seat 305 through bearing, to facilitate the rotation of conveying roller 301 and the rotation of flattening roller 302, to facilitate conveying current collector.

[0049] In the embodiment of the utility model, first mounting seat 304 and second mounting seat 305 are both "n" type, first mounting seat 304 is sleeved on the outside of second mounting seat 305.

[0050] Specifically, the second mounting seat 305 of "n" type can be arranged on the inner side of the first mounting seat 304 of "n" type, so that the mounting structure is more compact, and the two extending ends of the second mounting seat 305 of "n" type facilitate the installation of the conveying roller 301, and the two extending ends of the first mounting seat 304 of "n" type facilitate the installation of the flattening roller 302.

[0051] In the embodiment of the utility model, elastic unit 303 includes elastic element 3031 and transmission rod 3032, one end of transmission rod 3032 is connected with elastic element 3031 and is fixed, the other end of transmission rod 3032 is connected with second mounting seat 305 and is fixed, hollow sleeve 306 for accommodating elastic element 3031 is set up on first mounting seat 304, through hole 307 for passing transmission rod 3032 is also set up on first mounting seat 304, hollow sleeve 306 and through hole 307 are interconnected, elastic element 3031 is driven by transmission rod 3032, second mounting seat 305, flatting roller 302 and conveying roller 301 abut.

[0052] In the embodiment of the utility model, transmission rod 3032 is " T " type, the end of transmission rod 3032 is provided with first limiting step 3033, the inner diameter of hollow sleeve 306 is greater than the inner diameter of through hole 307, and second limiting step 3034 for cooperating with first limiting step 3033 is formed between hollow sleeve 306 and through hole 307.

[0053] Specifically, by the mutual cooperation of first limiting step 3033 and second limiting step 3034, transmission rod 3032 can be prevented from separating from hollow sleeve 306, and first limiting step 3033 and second limiting step 3034 limit the movement of transmission rod 3032.

[0054] Specifically, transmission rod 3032 can be made in a split body, and then connected and fixed by welding, bonding, clamping or other connecting methods, transmission rod 3032 can also be integrally formed, and the specific forming method of transmission rod 3032 is determined according to the actual situation and is not limited.

[0055] In the embodiment of the utility model, elastic element 3031 is a spring.

[0056] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above-mentioned embodiment, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principle of the utility model, some improvements and refinements can be made, and these improvements and refinements are also considered as the protection scope of the utility model.

Claims

1. A tension adjusting device for a current collector for coating of a lithium battery, characterized by, The utility model relates to a kind of transport roller structure, including: Mounting frame; Spacing adjustment structure, the spacing adjustment structure is arranged on the mounting frame; The transport roller structure includes at least two groups of transport roller groups, and the spacing adjustment structure is used to adjust the spacing between adjacent two groups of the transport roller groups in the transport direction of the transported current collector; The transport roller group includes a transport roller, a flattening roller and a spring unit, and the spring unit drives the flattening roller to abut against the transport roller.

2. The lithium battery coating current collector tension adjustment device according to claim 1, characterized in that: The transported current collector is transported from the rear side of the mounting frame to the front side of the mounting frame, and the transport roller structure includes two groups of the transport roller groups, one of which is arranged on the front side of the mounting frame, and the other of which is arranged on the rear side of the mounting frame.

3. The lithium battery coating current collector tension adjustment device according to claim 1 or 2, characterized in that: The spacing adjustment structure includes a spacing adjustment element and a driving element, the driving element is in transmission connection with the spacing adjustment element, and the driving element drives the transport roller group to move through the spacing adjustment element.

4. The lithium battery coating current collector tension adjustment device of claim 3, wherein: The spacing adjustment structure further includes a spacing adjustment frame, a limiting sliding groove is formed in the spacing adjustment frame, the transport roller group is in sliding cooperation with the limiting sliding groove, and the driving element drives the transport roller group to slide along the limiting sliding groove through the spacing adjustment element.

5. The lithium battery coating current collector tension adjustment device of claim 4, wherein: The transport roller structure includes two groups of the transport roller groups, and both of them are sleeved on the spacing adjustment element. Both ends of the spacing adjustment element are provided with threads, and the rotation directions of the threads at both ends of the spacing adjustment element are opposite, one of the transport roller groups is threadedly connected with one end of the spacing adjustment element, and the other of the transport roller groups is threadedly connected with the other end of the spacing adjustment element. The spacing driving element is a motor, the driving element drives the spacing adjustment element to rotate by rotating, so as to drive the two groups of the transport roller groups to move closer to or farther away from each other along the spacing adjustment element.

6. The lithium battery coating current collector tension adjustment device of claim 3, wherein: The transport roller group further includes a first mounting seat and a second mounting seat, the second mounting seat is arranged on the first mounting seat, and the spacing adjustment element is in transmission connection with the first mounting seat. The transport roller is in rotational connection with the first mounting seat, the flattening roller is in rotational connection with the second mounting seat, the spring unit is arranged between the first mounting seat and the second mounting seat, the second mounting seat is movably connected with the first mounting seat through the spring unit, the spring unit drives the flattening roller to abut against the transport roller through the second mounting seat, and the driving element drives the first mounting seat, the second mounting seat, the spring unit, the transport roller and the flattening roller to move together through the spacing adjustment element. Both the first mounting seat and the second mounting seat are "n" shaped, and the first mounting seat is sleeved on the outside of the second mounting seat.

7. The lithium battery coating current collector tension adjustment device of claim 6, wherein: The spring unit includes a spring element and a transmission rod, one end of the transmission rod is fixedly connected with the spring element, and the other end of the transmission rod is fixedly connected with the second mounting seat.

8. The lithium battery coating current collector tension adjustment device of claim 6, wherein: ​ The first mounting seat is provided with a hollow sleeve for accommodating the elastic element, and is also provided with a through hole for penetrating the transmission rod, the hollow sleeve and the through hole being in communication with each other, and the elastic element drives the flattening roller and the conveying roller to abut against each other through the transmission rod and the second mounting seat.

9. The lithium battery coating current collector tension adjustment device of claim 8, wherein: The transmission rod is in a "T" shape, and the end of the transmission rod is provided with a first limiting step. The inner diameter of the hollow sleeve is greater than the inner diameter of the through hole, and a second limiting step for cooperating with the first limiting step is formed between the hollow sleeve and the through hole.

10. The lithium battery coating current collector tension adjustment device of claim 8, wherein: The elastic element is a spring.

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