CN117800128A - Multi-station unreeling compounding method of battery diaphragm - Google Patents

Abstract

The invention relates to a compounding method of a multi-station unreeling compounding machine, which comprises the following steps of: s1: correspondingly winding the battery diaphragm on each unreeling roller on the multi-station unreeling compound machine; s2: adjusting the position between a first compound roller and a second compound roller on the multi-station unreeling compound machine; s3: adjusting the position of the first adjustment assembly; s4: adjusting the position of the second adjustment assembly; s5: and starting the multi-station unreeling compound machine. The scheme provided by the invention can realize the compounding of four or more layers of diaphragms; meanwhile, as the first adjusting component can change the export direction of the third battery diaphragm on the third unreeling roller and the fourth battery diaphragm on the fourth unreeling roller, the second adjusting component can change the export direction of the seventh battery diaphragm on the seventh unreeling roller and the eighth battery diaphragm on the eighth unreeling roller, and thus the exported diaphragms on the unreeling rollers are more tightly attached together.

Description

Multi-station unreeling compounding method of battery diaphragm

Technical Field

The invention relates to the technical field of lithium battery diaphragm stretching, in particular to a multi-station unreeling compounding method of a battery diaphragm.

Background

The battery diaphragm is a layer of diaphragm material between the positive electrode and the negative electrode of the battery, is a very critical part in the battery, has direct influence on the safety and the cost of the battery, and has the main effects of isolating the positive electrode from the negative electrode, preventing electrons in the battery from freely passing through, and enabling ions in electrolyte to freely pass through between the positive electrode and the negative electrode.

With the development of the lithium ion battery industry, the required amount of the separator material has increased greatly. In the world, only a few countries such as Japan, the United states and the like have the production technology and the corresponding large-scale production of the lithium ion battery polymer membrane, the research and the development of the lithium ion battery membrane in China are started later, and the membrane is produced in China, but all indexes of the membrane cannot reach the foreign level or even meet the use requirement. As a whole, the lithium battery diaphragm produced at home at present has the defects of uneven micropore size and distribution, poor stability and the like. Although a high-efficiency lithium battery diaphragm compound machine with the publication number of CN206322768U can compound two layers of films to obtain a thicker lithium ion battery diaphragm, it cannot compound four or more layers of films, so a multi-station unreeling compound method of the battery diaphragm is required to solve the above-mentioned problems.

Disclosure of Invention

The present invention is directed to solving at least one of the technical problems existing in the related art. Therefore, the invention provides a multi-station unreeling compounding method of a battery diaphragm, which can compound more than four layers of films.

The invention provides a multi-station unreeling compounding method of a battery diaphragm, which comprises the following steps of:

s1: correspondingly winding a first battery diaphragm, a second battery diaphragm, a third battery diaphragm, a fourth battery diaphragm, a fifth battery diaphragm, a sixth battery diaphragm, a seventh battery diaphragm and an eighth battery diaphragm on a first unreeling roller, a second unreeling roller, a third unreeling roller, a fourth unreeling roller, a fifth unreeling roller, a sixth unreeling roller, a seventh unreeling roller and an eighth unreeling roller of the multi-station unreeling compound machine;

s2: adjusting the position between a first compound roller and a second compound roller on the multi-station unreeling compound machine;

s3: the position of the first adjusting component is adjusted so that the third battery diaphragm on the third unreeling roller and the fourth battery diaphragm on the fourth unreeling roller change the export direction after passing through the first adjusting component and are wound on the second compound roller; or the third battery diaphragm on the third unreeling roller and the fourth battery diaphragm on the fourth unreeling roller are wound on the second compound roller after passing through a traction wheel on the multi-station unreeling compound machine;

s4: the position of the second adjusting component is adjusted so that the seventh battery diaphragm on the seventh unreeling roller and the eighth battery diaphragm on the eighth unreeling roller change the export direction after passing through the second adjusting component and are wound on the first compound roller; or, the seventh battery diaphragm on the seventh unreeling roller and the eighth battery diaphragm on the eighth unreeling roller are wound on the first compound roller after passing through a traction wheel on the multi-station unreeling compound machine;

s5: and starting the multi-station unreeling compound machine.

In one embodiment, before step S1, the method further comprises: adjusting the relative position between the first unreeling roller and the second unreeling roller; adjusting the relative position between the third unreeling roller and the fourth unreeling roller; adjusting the relative position between the fifth unreeling roller and the sixth unreeling roller; the relative position between the seventh unwind roller and the eighth unwind roller is adjusted.

In one embodiment, in step S3, when the traction rollers on the multi-station unreeling compound machine work normally, the third battery diaphragm on the third unreeling roller is wound on the second compound roller after passing through the corresponding plurality of traction rollers, and the fourth battery diaphragm on the fourth unreeling roller is wound on the second compound roller after passing through the corresponding plurality of traction rollers;

when the export direction of the third battery diaphragm on the third unreeling roller and the export direction of the fourth battery diaphragm on the fourth unreeling roller are required to be regulated, the third battery diaphragm on the third unreeling roller and the fourth battery diaphragm on the fourth unreeling roller are wound on the second composite roller after passing through the first regulating component.

In one embodiment, the first adjusting assembly comprises a first slide rail, a first moving frame, a first guide roller and a second guide roller;

the first sliding rail is arranged between a second bracket and a third bracket on the multi-station unreeling compound machine along a first direction, the first moving frame is connected to the first sliding rail in a sliding way, and the first guide roller and the second guide roller are both arranged on the first moving frame;

the third battery diaphragm on the third unreeling roller is wound on the second compound roller after passing through the corresponding second guide roller, and the fourth battery diaphragm on the fourth unreeling roller is wound on the second compound roller after passing through the corresponding first guide roller.

In one embodiment, the first slide rail includes a first linear guide rail, and the first moving frame is slidably connected to the first linear guide rail.

In one embodiment, in step S4, when the traction rollers on the multi-station unreeling compound machine work normally, the seventh battery separator on the seventh unreeling roller is wound on the first compound roller after passing through the corresponding plurality of traction rollers, and the eighth battery separator on the eighth unreeling roller is wound on the first compound roller after passing through the corresponding plurality of traction rollers;

when the export direction of the seventh battery diaphragm on the seventh unreeling roller and the export direction of the eighth battery diaphragm on the eighth unreeling roller are required to be regulated, the seventh battery diaphragm on the seventh unreeling roller and the eighth battery diaphragm on the eighth unreeling roller are wound on the first composite roller after passing through the second regulating component.

In one embodiment, the second adjusting assembly comprises a second sliding rail, a second moving frame, a third guide roller and a fourth guide roller;

the second sliding rail is arranged between a fourth bracket and a fifth bracket on the multi-station unreeling compound machine along the first direction, the second moving frame is connected to the second sliding rail in a sliding way, and the third guide roller and the fourth guide roller are both arranged on the second moving frame;

the seventh battery diaphragm on the seventh unreeling roller is wound on the first compound roller after passing through the corresponding fourth guide roller, and the eighth battery diaphragm on the eighth unreeling roller is wound on the first compound roller after passing through the corresponding third guide roller.

In one embodiment, the second sliding rail comprises a second linear guide rail, and the second moving frame is slidably connected with the second linear guide rail.

In one embodiment, in step S2, adjusting the position between the first compounding roll and the second compounding roll on the multi-station unreeling compounding machine includes:

correspondingly installing two ends of a first composite roller in a first strip hole on a first bracket on a multi-station unreeling composite machine, and adjusting the position of the first composite roller in the first strip hole;

and correspondingly installing two ends of a second composite roller in a second strip hole on a first bracket on the multi-station unreeling composite machine, and adjusting the position of the second composite roller in the second strip hole.

In one embodiment, after step S5, the method further comprises:

checking whether the quality of the compounded multi-layer diaphragm meets the requirement, and if so, continuing to work by the multi-station unreeling compound machine; if the positions of all the parts on the multi-station unreeling compound machine are not met, the multi-station unreeling compound machine stops working, and the positions of all the parts on the multi-station unreeling compound machine are adjusted.

The beneficial effects of the invention include:

according to the multi-station unreeling compounding method of the battery diaphragm, four layers or more of diaphragms can be compounded through the cooperation of the first unreeling roller, the second unreeling roller, the third unreeling roller, the fourth unreeling roller, the fifth unreeling roller, the sixth unreeling roller, the seventh unreeling roller, the eighth unreeling roller, the first compounding roller and the second compounding roller; meanwhile, the multi-station unreeling compound machine comprises a first adjusting component and a second adjusting component, wherein the first adjusting component can change the exporting direction of a third battery diaphragm on a third unreeling roller and a fourth battery diaphragm on a fourth unreeling roller, and the second adjusting component can change the exporting direction of a seventh battery diaphragm on a seventh unreeling roller and an eighth battery diaphragm on an eighth unreeling roller, so that the exported diaphragms on the unreeling rollers are more tightly attached together.

According to the invention, the first unreeling roller and the second unreeling roller are arranged on the second support on the multi-station unreeling compound machine at an upper and lower interval, the third unreeling roller and the fourth unreeling roller are arranged on the third support on the multi-station unreeling compound machine at an upper and lower interval, the fifth unreeling roller and the sixth unreeling roller are arranged on the fourth support on the multi-station unreeling compound machine at an upper and lower interval, the seventh unreeling roller and the eighth unreeling roller are arranged on the fifth support on the multi-station unreeling compound machine at an upper and lower interval, and meanwhile, the second support, the third support, the fourth support and the fifth support are distributed below the frame on the multi-station unreeling compound machine, so that the height of the whole compound machine can be reduced, and the diaphragms led out from the first unreeling roller, the second unreeling roller, the third unreeling roller, the fourth unreeling roller, the fifth unreeling roller, the sixth unreeling roller and the seventh unreeling roller can be compounded at the same time, and the diaphragms led out from the multi-station unreeling compound machine can be greatly improved.

Drawings

Fig. 1 is a schematic structural diagram of a multi-station unreeling compound machine according to an embodiment of the present invention;

FIG. 2 is a perspective view of FIG. 1;

FIG. 3 is another schematic view of FIG. 2;

FIG. 4 is a further schematic illustration of FIG. 2;

FIG. 5 is a top view of FIG. 2;

fig. 6 is a schematic flow chart of a multi-station unreeling compounding method of a battery separator according to an embodiment of the invention.

The figures are labeled as follows:

101. a frame; 1011. a surrounding baffle; 1012. stairs; 102. a first bracket; 1021. a first elongated aperture; 1022. a second elongated aperture; 103. a second bracket; 104. a third bracket; 105. a fourth bracket; 106. a fifth bracket; 201. a first unreeling roller; 202. a second unreeling roller; 203. a first transition roller; 204. a second transition roller; 301. a third unreeling roller; 302. a fourth unreeling roller; 401. a fifth unreeling roller; 402. a sixth unreeling roller; 501. a seventh unreeling roller; 502. an eighth unreeling roller; 503. a third transition roller; 504. a fourth transition roller; 505. a fifth transition roller; 506. a sixth transition roller; 507. a seventh transition roller; 508. an eighth transition roller; 509. a ninth transition roller; 5010. a tenth transition roller; 601. a first composite roller; 602. a second composite roller; 603. a first driving roller; 604. a second driving roller; 701. a first slide rail; 702. a first moving frame; 703. a first guide roller; 704. a second guide roller; 801. a second slide rail; 802. a second moving frame; 803. a third guide roller; 804. and a fourth guide roller.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

As shown in fig. 1-5, the present invention discloses a multi-station unreeling compound machine, comprising: the device comprises a frame 101, a first support 102, a second support 103, a third support 104, a fourth support 105, a fifth support 106, a first unreeling component, a second unreeling component, a third unreeling component, a fourth unreeling component, a composite roller component, a first adjusting component and a second adjusting component, wherein the first support 102, the second support 103, the third support 104, the fourth support 105 and the fifth support 106 are sequentially arranged below the frame 101 at intervals; the composite roller assembly is arranged on a first bracket 102, the first unreeling assembly is arranged on a second bracket 103, the second unreeling assembly is arranged on a third bracket 104, the third unreeling assembly is arranged on a fourth bracket 105, and the fourth unreeling assembly is arranged on a fifth bracket 106; the diaphragms on the first unreeling component, the second unreeling component, the third unreeling component and the fourth unreeling component are respectively wound on the composite roller component after passing through the corresponding traction rollers; meanwhile, the first adjusting component is arranged between the second bracket 103 and the third bracket 104 and is used for changing the direction of the diaphragm on the second unreeling component, and the first adjusting component can be close to or far away from the frame 101; the second adjusting assembly is arranged between the fourth bracket 105 and the fifth bracket 106 for changing the direction of the unwinding of the membrane on the fourth unwinding assembly, and can be moved closer to or further away from the frame 101.

By adopting the technical scheme, the diaphragms on the first unreeling component and the second unreeling component are wound on the second compound roller 602 on the compound roller component after passing through the corresponding traction rollers, the diaphragms on the third unreeling component and the fourth unreeling component are wound on the first compound roller 601 on the compound roller component after passing through the corresponding traction rollers, and finally the diaphragms on the first compound roller 601 are compounded together after passing through the first driving roller 603 and the diaphragms on the second compound roller 602 and then passing through the second driving roller 604, so that the combination of four layers and more of diaphragms can be realized; meanwhile, the multi-station unreeling compound machine comprises a first adjusting component and a second adjusting component, wherein the first adjusting component can change the direction of the export of the diaphragm on the second unreeling component, the second adjusting component can change the direction of the export of the diaphragm on the fourth unreeling component, so that the export direction of the diaphragm on the second unreeling component is adjusted through the first adjusting component, the diaphragm on the second unreeling component and the diaphragm on the first unreeling component can be tightly attached together after exported, the situation that the included angle between the diaphragm on the first unreeling component and the diaphragm on the second unreeling component is too large after exported is avoided, and the corresponding diaphragms cannot be well attached together, and further the diaphragms cannot be well compounded is caused; similarly, the second adjusting component is used for adjusting the guiding-out direction of the diaphragm on the fourth unreeling component, so that the diaphragm on the third unreeling component and the diaphragm on the fourth unreeling component can be well attached together after guiding-out; moreover, because the first adjusting component and the second adjusting component can be close to or far away from the frame 101, when the corresponding traction rollers on the second unreeling component and the fourth unreeling component are in a problem, the first adjusting component and the second adjusting component are moved to the preset position, at the moment, the diaphragm led out from the second unreeling component is wound on the compound roller component through the first adjusting component, and the diaphragm led out from the fourth unreeling component is wound on the compound roller component through the second adjusting component, so that the normal operation of the whole compound machine is ensured.

To facilitate compounding together the two layers of separator film on the first unwind assembly, as shown in fig. 1 and in combination with fig. 4, the first unwind assembly comprises a first unwind roller 201 and a second unwind roller 202, wherein the first unwind roller 201 and the second unwind roller 202 are both disposed on the second support 103; the composite roller assembly includes a first composite roller 601 and a second composite roller 602, both of the first composite roller 601 and the second composite roller 602 being disposed on the first support 102. The connection structures of the first composite roller 601, the second composite roller 602 and the first bracket 102 in the present invention are all of the prior art, and will not be described here.

In use, the separator on the first unreeling roller 201 is wound on the second compounding roller 602 after passing through the plurality of first transition rollers 203, the separator on the second unreeling roller 202 is wound on the second compounding roller 602 after passing through the plurality of second transition rollers 204, and the separator on the first unreeling roller 201 is attached, so that the separator on the first unreeling roller 201 and the separator on the second unreeling roller 202 can be compounded together.

In order to facilitate the combination of the two separator sheets on the second unreeling assembly and the two separator sheets on the first unreeling assembly, as shown in fig. 1 and in combination with fig. 4, the second unreeling assembly comprises a third unreeling roller 301 and a fourth unreeling roller 302, wherein the third unreeling roller 301 and the fourth unreeling roller 302 are both arranged on the third bracket 104.

When in use, the diaphragm on the third unreeling roller 301 is wound on the second compound roller 602 after passing through a plurality of corresponding traction rollers, and the diaphragm on the fourth unreeling roller 302 is wound on the second compound roller 602 after passing through a plurality of corresponding traction rollers; alternatively, the separator on the third unwind roller 301 and the separator on the fourth unwind roller 302 are both wound on the second composite roller 602 after passing through the first adjustment assembly.

Because the multi-station unreeling compound machine comprises the first adjusting component, the first adjusting component can change the direction of the export of the diaphragm on the third unreeling roller 301 and the diaphragm on the fourth unreeling roller 302, and thus the direction of the export of the diaphragm on the third unreeling roller 301 and the diaphragm on the fourth unreeling roller 302 is adjusted through the first adjusting component, the diaphragm on the third unreeling roller 301 and the diaphragm on the fourth unreeling roller 302 can be tightly attached to the diaphragm on the first unreeling roller 201 after export, and the problem that the included angle between the diaphragm on the third unreeling roller 301 and the diaphragm on the fourth unreeling roller 302 and the diaphragm exported on the first unreeling roller 201 is too large after export is avoided, so that the diaphragm exported on the third unreeling roller 301 and the diaphragm exported on the fourth unreeling roller 302 cannot be well attached to the diaphragm exported on the first unreeling roller 201 together, and the quality of the compound diaphragm is further influenced. Moreover, since the first adjusting assembly can be close to or far away from the frame 101, when problems occur in the corresponding traction rollers on the third unreeling roller 301 and the fourth unreeling roller 302, the first adjusting assembly is moved to a preset position, and at this time, the diaphragms led out from the third unreeling roller 301 and the fourth unreeling roller 302 are wound on the compound roller assembly through the first adjusting assembly, so that the normal operation of the whole compound machine is ensured.

Further, as shown in fig. 2, the first adjusting assembly includes a first sliding rail 701, a first moving frame 702, a first guiding roller 703 and a second guiding roller 704, wherein the first sliding rail 701 is disposed between the second bracket 103 and the third bracket 104 along a first direction, the first moving frame 702 is slidably connected to the first sliding rail 701, and the first guiding roller 703 and the second guiding roller 704 are both disposed on the first moving frame 702; the separator on the third unreeling roller 301 passes through the corresponding second guiding roller 704 and then is wound on the second compound roller 602, and the separator on the fourth unreeling roller 302 passes through the corresponding first guiding roller 703 and then is wound on the second compound roller 602.

The first direction in the present invention is the length direction of the first sliding rail 701 as shown in fig. 2. Specifically, the first adjusting assembly includes two first sliding rails 701, the two first sliding rails 701 are arranged in parallel at intervals, the first moving frame 702 is disposed on the two first sliding rails 701, and the first moving frame 702 can slide along the length direction of the first sliding rails 701 relative to the first sliding rails 701, and meanwhile, the second guiding roller 704 is located above the first guiding roller 703.

In the initial state, the first moving frame 702 is located at the position as in fig. 2, and at this time, the separator discharged from the third unreeling roller 301 and the separator discharged from the fourth unreeling roller 302 are wound around the second composite roller 602 after passing through the traction roller on the frame 101.

When the direction of the separator on the third unreeling roller 301 and the direction of the separator on the fourth unreeling roller 302 need to be adjusted, the first moving frame 702 is pushed by an external force, at this time, the first moving frame 702 is located between the second support 103 and the third support 104, the separator on the third unreeling roller 301 is wound on the second composite roller 602 after passing through the second guide roller 704, and the separator on the fourth unreeling roller 302 is wound on the second composite roller 602 after passing through the first guide roller 703, so that the separator on the third unreeling roller 301 and the separator on the fourth unreeling roller 302 can be tightly attached to the separator on the first unreeling roller 201 after being exported, and an included angle between the separator on the third unreeling roller 301 and the separator on the fourth unreeling roller 302 and the separator exported on the first unreeling roller 201 is prevented from being excessively large, and therefore the separator exported on the third unreeling roller 301 and the separator exported on the fourth unreeling roller 302 cannot be well attached to the separator exported on the first unreeling roller 201, and the separator is well attached to the separator after being further attached to the separator.

To facilitate the compounding together of the two layers of separator film on the third unwind assembly, as shown in fig. 1, the third unwind assembly includes a fifth unwind roller 401 and a sixth unwind roller 402, both of which are disposed on the fourth bracket 105.

In use, the separator on the fifth unwind roller 401 is wound around the first composite roller 601 after passing through a corresponding plurality of pull rollers, and the separator on the sixth unwind roller 402 is wound around the first composite roller 601 after passing through a corresponding plurality of pull rollers.

To facilitate the compounding together of the two layers of separator film on the fourth unwind assembly, as shown in fig. 1, the fourth unwind assembly includes a seventh unwind roller 501 and an eighth unwind roller 502, both of the seventh unwind roller 501 and the eighth unwind roller 502 being disposed on the fifth bracket 106.

When in use, the diaphragm on the seventh unreeling roller 501 is wound on the first compound roller 601 after passing through a plurality of corresponding traction rollers, and the diaphragm on the eighth unreeling roller 502 is wound on the first compound roller 601 after passing through a plurality of corresponding traction rollers; alternatively, the membrane on the seventh unwind roller 501 and the membrane on the eighth unwind roller 502 are both wound on the first composite roller 601 after passing through the second adjustment assembly.

The multi-station unreeling compound machine comprises the second adjusting component, wherein the second adjusting component can change the direction of leading out the diaphragm on the seventh unreeling roller 501 and the diaphragm on the eighth unreeling roller 502, and thus the direction of leading out the diaphragm on the seventh unreeling roller 501 and the diaphragm on the eighth unreeling roller 502 is adjusted through the second adjusting component, so that the diaphragm on the seventh unreeling roller 501 and the diaphragm on the eighth unreeling roller 502 can be tightly attached to the diaphragm on the fifth unreeling roller 401 on the first compound roller 601 after being led out, and the included angle between the diaphragm on the seventh unreeling roller 501 and the diaphragm on the eighth unreeling roller 502 after being led out and the diaphragm on the fifth unreeling roller 401 is not very good when being led out on the first compound roller 601, and the diaphragm on the seventh unreeling roller 501 and the diaphragm on the eighth unreeling roller 502 can not be well attached together, and the quality of the diaphragm after being compounded is further influenced. Moreover, since the second adjusting assembly can be close to or far away from the frame 101, when problems occur in the corresponding traction rollers on the seventh unreeling roller 501 and the eighth unreeling roller 502, the second adjusting assembly is moved to a preset position, and at this time, the diaphragms led out from the seventh unreeling roller 501 and the eighth unreeling roller 502 are wound on the compound roller assembly through the second adjusting assembly, thereby ensuring the normal operation of the whole compound machine.

Since the first unwinding roller 201 and the second unwinding roller 202 are arranged on the second support 103 at an up-down interval, the third unwinding roller 301 and the fourth unwinding roller 302 are arranged on the third support 104 at an up-down interval, the fifth unwinding roller 401 and the sixth unwinding roller 402 are arranged on the fourth support 105 at an up-down interval, and the seventh unwinding roller 501 and the eighth unwinding roller 502 are arranged on the fifth support 106 at an up-down interval, and meanwhile, since the second support 103, the third support 104, the fourth support 105 and the fifth support 106 are distributed below the frame 101, the height of the whole compound machine can be reduced compared with the scheme that three or more unwinding rollers are arranged in the height direction below the frame 101. And the diaphragms led out from the first unreeling roller 201, the second unreeling roller 202, the third unreeling roller 301, the fourth unreeling roller 302, the fifth unreeling roller 401, the sixth unreeling roller 402, the seventh unreeling roller 501 and the eighth unreeling roller 502 can be compounded at the same time, so that the compounding efficiency is greatly improved.

Further, as shown in fig. 2, the second adjusting assembly includes a second slide rail 801, a second moving frame 802, a third guide roller 803, and a fourth guide roller 804; the second sliding rail 801 is arranged between the fourth bracket 105 and the fifth bracket 106 along the first direction, the second moving frame 802 is slidably connected to the second sliding rail 801, and the third guiding roller 803 and the fourth guiding roller 804 are both arranged on the second moving frame 802; the diaphragm on the seventh unreeling roller 501 passes through the corresponding fourth guiding roller 804 and then is wound on the first compound roller 601, and the diaphragm on the eighth unreeling roller 502 passes through the corresponding third guiding roller 803 and then is wound on the first compound roller 601.

The first direction in the present invention is the length direction of the second sled 801 as in fig. 2. Specifically, the second adjusting component includes two second sliding rails 801, the two second sliding rails 801 are arranged in parallel at intervals, the second moving frame 802 is disposed on the two second sliding rails 801, and the second moving frame 802 can slide along the length direction of the second sliding rails 801 relative to the second sliding rails 801, and meanwhile, the fourth guiding roller 804 is located above the third guiding roller 803.

In the initial state, the second moving frame 802 is located at the position as in fig. 2, at this time, the separator guided out on the seventh unreeling roller 501 is wound around the first composite roller 601 after passing through the corresponding traction roller on the frame 101, and the separator guided out on the eighth unreeling roller 502 is wound around the first composite roller 601 after passing through the third transition roller 503, the fourth transition roller 504, the fifth transition roller 505, the sixth transition roller 506, the seventh transition roller 507, the eighth transition roller 508, the ninth transition roller 509, and the tenth transition roller 5010 on the frame 101.

When the direction of the separator on the seventh unreeling roller 501 and the direction of the separator on the eighth unreeling roller 502 need to be adjusted, the second moving frame 802 is pushed by an external force, at this time, the second moving frame 802 is located between the fourth frame 105 and the fifth frame 106, the separator on the seventh unreeling roller 501 is wound on the first composite roller 601 after passing through the fourth guide roller 804, the separator on the eighth unreeling roller 502 is wound on the first composite roller 601 after passing through the third guide roller 803, so that an included angle between the separator on the seventh unreeling roller 501 and the separator on the eighth unreeling roller 502 after being exported and the separator on the fifth unreeling roller 401 is too large when being imported on the first composite roller 601, and therefore the separator exported on the fifth unreeling roller 401, the separator exported on the seventh unreeling roller 501 and the separator exported on the eighth unreeling roller 502 cannot be well attached together, and the quality of the composite separator is further affected.

In order to facilitate adjustment of the relative positions between the first composite roller 601 and the second composite roller 602, as shown in fig. 3, a first elongated hole 1021 and a second elongated hole 1022 are respectively provided on the first bracket 102 along the second direction; wherein, two ends of the first compound roller 601 are correspondingly positioned in the two first strip holes 1021, and the position of the first compound roller 601 relative to the first strip holes 1021 is adjustable; the two ends of the second compound roller 602 are correspondingly positioned in the two second strip holes 1022, and the position of the second compound roller 602 relative to the second strip holes 1022 is adjustable.

When it is desired to adjust the relative position between the first compound roller 601 and the second compound roller 602, it is only necessary to adjust the position of the first compound roller 601 in the first elongated hole 1021 and/or adjust the position of the second compound roller 602 in the second elongated hole 1022.

In order to facilitate the observation of the operation of the whole compound machine, as shown in fig. 1, the multi-station unreeling compound machine further comprises a surrounding block 1011 and a stair 1012, wherein the surrounding block 1011 is arranged on the periphery of the outer side of the frame 101, and one end of the stair 1012 is hinged with the frame 101.

When the multifunctional combined machine is used, the stair 1012 can be used for climbing the top of the machine frame 101, so that people can observe the work of the combined machine from a high place conveniently, and meanwhile, when people walk on the top of the machine frame 101, the safety is improved due to the arrangement of the enclosure 1011.

As shown in fig. 1-6, an embodiment of the present invention provides a multi-station unreeling and compounding method of a battery separator, which includes the following steps:

step 110: winding a first battery diaphragm, a second battery diaphragm, a third battery diaphragm, a fourth battery diaphragm, a fifth battery diaphragm, a sixth battery diaphragm, a seventh battery diaphragm and an eighth battery diaphragm on a first unreeling roller 201, a second unreeling roller 202, a third unreeling roller 301, a fourth unreeling roller 302, a fifth unreeling roller 401, a sixth unreeling roller 402, a seventh unreeling roller 501 and an eighth unreeling roller 502 of the multi-station unreeling compound machine correspondingly;

step 120: adjusting the position between a first compound roll 601 and a second compound roll 602 on the multi-station unreeling compound machine;

step 130: adjusting the position of the first adjusting assembly so that the third battery separator on the third unreeling roller 301 and the fourth battery separator on the fourth unreeling roller 302 change the export direction after passing through the first adjusting assembly and are wound on the second compound roller 602; or, the third battery diaphragm on the third unreeling roller 301 and the fourth battery diaphragm on the fourth unreeling roller 302 are wound on the second compound roller 602 after passing through a traction wheel on the multi-station unreeling compound machine;

step 140: adjusting the position of the second adjusting assembly so that the seventh battery separator on the seventh unreeling roller 501 and the eighth battery separator on the eighth unreeling roller 502 change the export direction and wind on the first compound roller 601 after passing through the second adjusting assembly; or, the seventh battery diaphragm on the seventh unreeling roller 501 and the eighth battery diaphragm on the eighth unreeling roller 502 are wound on the first compound roller 601 after passing through a traction wheel on the multi-station unreeling compound machine;

step 150: and starting the multi-station unreeling compound machine.

By adopting the technical scheme, the four layers and more of diaphragms can be compounded through the cooperation of the first unreeling roller, the second unreeling roller, the third unreeling roller, the fourth unreeling roller, the fifth unreeling roller, the sixth unreeling roller, the seventh unreeling roller, the eighth unreeling roller, the first compounding roller and the second compounding roller; meanwhile, the multi-station unreeling compound machine comprises a first adjusting component and a second adjusting component, wherein the first adjusting component can change the exporting direction of a third battery diaphragm on a third unreeling roller and a fourth battery diaphragm on a fourth unreeling roller, and the second adjusting component can change the exporting direction of a seventh battery diaphragm on a seventh unreeling roller and an eighth battery diaphragm on an eighth unreeling roller, so that the exported diaphragms on the unreeling rollers are more tightly attached together.

Further, in the invention, the first unreeling roller and the second unreeling roller are arranged on the second bracket on the multi-station unreeling compound machine at an upper and lower interval, the third unreeling roller and the fourth unreeling roller are arranged on the third bracket on the multi-station unreeling compound machine at an upper and lower interval, the fifth unreeling roller and the sixth unreeling roller are arranged on the fourth bracket on the multi-station unreeling compound machine at an upper and lower interval, the seventh unreeling roller and the eighth unreeling roller are arranged on the fifth bracket on the multi-station unreeling compound machine at an upper and lower interval, and meanwhile, the second bracket, the third bracket, the fourth bracket and the fifth bracket are distributed below the frame on the multi-station unreeling compound machine, so that the height of the whole compound machine can be reduced, and the diaphragms led out from the first unreeling roller, the second unreeling roller, the third unreeling roller, the fourth unreeling roller, the fifth unreeling roller, the sixth unreeling roller and the seventh unreeling roller can be compounded at the same time, and the diaphragms led out from the eighth unreeling roller can be greatly improved.

In some embodiments, prior to step S1, the method further comprises: adjusting the relative position between the first unwind roller 201 and the second unwind roller 202; adjusting the relative position between the third unwind roller 301 and the fourth unwind roller 302; adjusting the relative position between the fifth unwind roller 401 and the sixth unwind roller 402; the relative position between the seventh unwind roller 501 and the eighth unwind roller 502 is adjusted.

In some embodiments, in step S3, when the traction rollers on the multi-station unreeling compound machine work normally, the third battery separator on the third unreeling roller 301 is wound on the second compound roller 602 after passing through the corresponding plurality of traction rollers, and the fourth battery separator on the fourth unreeling roller 302 is wound on the second compound roller 602 after passing through the corresponding plurality of traction rollers; when the direction of the third battery separator on the third unreeling roller 301 and the direction of the fourth battery separator on the fourth unreeling roller 302 need to be adjusted, the third battery separator on the third unreeling roller 301 and the fourth battery separator on the fourth unreeling roller 302 are wound on the second composite roller 602 after passing through the first adjusting component.

Specifically, the first adjusting component includes a first slide rail 701, a first moving frame 702, a first guide roller 703, and a second guide roller 704; the first sliding rail 701 is arranged between the second bracket 103 and the third bracket 104 on the multi-station unreeling compound machine along the first direction, the first moving frame 702 is slidingly connected on the first sliding rail 701, and the first guide roller 703 and the second guide roller 704 are both arranged on the first moving frame 702; the third battery separator on the third unreeling roller 301 is wound on the second compound roller 602 after passing through the corresponding second guide roller 704, and the fourth battery separator on the fourth unreeling roller 302 is wound on the second compound roller 602 after passing through the corresponding first guide roller 703.

Further, in order to facilitate driving the first moving frame 702 to move relative to the first sliding rail 701, the first sliding rail 701 in the present invention includes a first linear guide rail, and the first moving frame 702 is slidably connected to the first linear guide rail. When the sliding block moving device is used, the motor on the first linear guide rail is started to move, the motor can drive the sliding block on the first linear guide rail to move relative to the first linear guide rail, and the first moving frame 702 can be driven to move when the sliding block moves due to the fact that the first moving frame 702 is connected with the sliding block.

In some embodiments, in step S4, when the traction rollers on the multi-station unreeling compound machine work normally, the seventh battery separator on the seventh unreeling roller 501 is wound on the first compound roller 601 after passing through the corresponding plurality of traction rollers, and the eighth battery separator on the eighth unreeling roller 502 is wound on the first compound roller 601 after passing through the corresponding plurality of traction rollers; when the direction of the export of the seventh battery separator on the seventh unreeling roller 501 and the direction of the export of the eighth battery separator on the eighth unreeling roller 502 need to be adjusted, the seventh battery separator on the seventh unreeling roller 501 and the eighth battery separator on the eighth unreeling roller 502 are wound on the first composite roller 601 after passing through the second adjusting component. The structure of the second adjusting assembly in this embodiment is the same as that of the second adjusting assembly in the multi-station unreeling compound machine, and will not be described here.

In some embodiments, after step S5, the method further comprises: checking whether the quality of the compounded multi-layer diaphragm meets the requirement, and if so, continuing to work by the multi-station unreeling compound machine; if the positions of all the parts on the multi-station unreeling compound machine are not met, the multi-station unreeling compound machine stops working, and the positions of all the parts on the multi-station unreeling compound machine are adjusted.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. The multi-station unreeling compounding method of the battery diaphragm is characterized by comprising the following steps of:

s1: correspondingly winding a first battery diaphragm, a second battery diaphragm, a third battery diaphragm, a fourth battery diaphragm, a fifth battery diaphragm, a sixth battery diaphragm, a seventh battery diaphragm and an eighth battery diaphragm on a first unreeling roller (201), a second unreeling roller (202), a third unreeling roller (301), a fourth unreeling roller (302), a fifth unreeling roller (401), a sixth unreeling roller (402), a seventh unreeling roller (501) and an eighth unreeling roller (502) of the multi-station unreeling compound machine;

s2: adjusting the position between a first compound roller (601) and a second compound roller (602) on the multi-station unreeling compound machine;

s3: adjusting the position of the first adjusting component so that the third battery diaphragm on the third unreeling roller (301) and the fourth battery diaphragm on the fourth unreeling roller (302) change the export direction after passing through the first adjusting component and are wound on the second compound roller (602); or, the third battery diaphragm on the third unreeling roller (301) and the fourth battery diaphragm on the fourth unreeling roller (302) are wound on the second compound roller (602) after passing through a traction wheel on the multi-station unreeling compound machine;

s4: adjusting the position of the second adjusting component so that the seventh battery diaphragm on the seventh unreeling roller (501) and the eighth battery diaphragm on the eighth unreeling roller (502) change the export direction after passing through the second adjusting component and are wound on the first compound roller (601); or, the seventh battery diaphragm on the seventh unreeling roller (501) and the eighth battery diaphragm on the eighth unreeling roller (502) are wound on the first compound roller (601) after passing through a traction wheel on the multi-station unreeling compound machine;

s5: and starting the multi-station unreeling compound machine.

2. The multi-station unreeling composite method of the battery separator of claim 1, wherein prior to step S1, the method further comprises:

adjusting the relative position between the first unwind roller (201) and the second unwind roller (202); adjusting the relative position between the third unwind roller (301) and the fourth unwind roller (302); adjusting the relative position between the fifth unwind roller (401) and the sixth unwind roller (402); the relative position between the seventh unwind roller (501) and the eighth unwind roller (502) is adjusted.

3. The multi-station unreeling compounding method of the battery diaphragm according to claim 1, wherein in the step S3, when the traction roller on the multi-station unreeling compounding machine works normally, the third battery diaphragm on the third unreeling roller (301) is wound on the second compounding roller (602) after passing through the corresponding plurality of traction rollers, and the fourth battery diaphragm on the fourth unreeling roller (302) is wound on the second compounding roller (602) after passing through the corresponding plurality of traction rollers;

when the export direction of the third battery diaphragm on the third unreeling roller (301) and the export direction of the fourth battery diaphragm on the fourth unreeling roller (302) need to be adjusted, the third battery diaphragm on the third unreeling roller (301) and the fourth battery diaphragm on the fourth unreeling roller (302) are wound on the second compound roller (602) after passing through the first adjusting component.

4. A multi-station unreeling compounding method of a battery separator according to any one of claims 1-3, wherein the first adjusting assembly comprises a first slide rail (701), a first moving frame (702), a first guide roller (703) and a second guide roller (704);

the first sliding rail (701) is arranged between a second bracket (103) and a third bracket (104) on the multi-station unreeling compound machine along a first direction, the first moving frame (702) is connected to the first sliding rail (701) in a sliding way, and the first guide roller (703) and the second guide roller (704) are arranged on the first moving frame (702);

the third battery diaphragm on the third unreeling roller (301) is wound on the second compound roller (602) after passing through the corresponding second guide roller (704), and the fourth battery diaphragm on the fourth unreeling roller (302) is wound on the second compound roller (602) after passing through the corresponding first guide roller (703).

5. The multi-station unreeling composite method of a battery separator of claim 4 wherein the first slide rail (701) comprises a first linear guide, and the first moving frame (702) is slidingly connected with the first linear guide.

6. The multi-station unreeling and compounding method of the battery diaphragm according to claim 1, wherein in the step S4, when the traction roller on the multi-station unreeling and compounding machine works normally, the seventh battery diaphragm on the seventh unreeling roller (501) is wound on the first compounding roller (601) after passing through the corresponding plurality of traction rollers, and the eighth battery diaphragm on the eighth unreeling roller (502) is wound on the first compounding roller (601) after passing through the corresponding plurality of traction rollers;

when the direction of leading out the seventh battery diaphragm on the seventh unreeling roller (501) and the direction of leading out the eighth battery diaphragm on the eighth unreeling roller (502) need to be adjusted, the seventh battery diaphragm on the seventh unreeling roller (501) and the eighth battery diaphragm on the eighth unreeling roller (502) are wound on the first compound roller (601) after passing through the second adjusting component.

7. The multi-station unreeling composite method of the battery separator of claim 1 or 6, wherein the second adjusting component comprises a second sliding rail (801), a second moving frame (802), a third guide roller (803) and a fourth guide roller (804);

the second sliding rail (801) is arranged between a fourth bracket (105) and a fifth bracket (106) on the multi-station unreeling compound machine along a first direction, a second moving frame (802) is connected to the second sliding rail (801) in a sliding manner, and a third guide roller (803) and a fourth guide roller (804) are arranged on the second moving frame (802);

the seventh battery diaphragm on the seventh unreeling roller (501) is wound on the first compound roller (601) after passing through the corresponding fourth guide roller (804), and the eighth battery diaphragm on the eighth unreeling roller (502) is wound on the first compound roller (601) after passing through the corresponding third guide roller (803).

8. The multi-station unreeling combination method of the battery separator of claim 7 wherein the second sliding rail (801) comprises a second linear guide, and the second moving frame (802) is slidingly connected with the second linear guide.

9. The multi-station unwind compounding method of battery separator according to claim 1, characterized in that in step S2, said adjusting the position between the first compounding roller and the second compounding roller on the multi-station unwind compounding machine comprises:

correspondingly installing two ends of a first compound roller (601) in a first strip hole (1021) on a first bracket (102) on a multi-station unreeling compound machine, and adjusting the position of the first compound roller (601) in the first strip hole (1021);

and correspondingly installing two ends of the second compound roller (602) in a second strip hole (1022) on the first bracket (102) on the multi-station unreeling compound machine, and adjusting the position of the second compound roller (602) in the second strip hole (1022).

10. The multi-station unreeling composite method of the battery separator of claim 1, wherein after step S5, the method further comprises:

checking whether the quality of the compounded multi-layer diaphragm meets the requirement, and if so, continuing to work by the multi-station unreeling compound machine; if the positions of all the parts on the multi-station unreeling compound machine are not met, the multi-station unreeling compound machine stops working, and the positions of all the parts on the multi-station unreeling compound machine are adjusted.