CN218261166U - Smoothing mechanism and winding device - Google Patents

Abstract

The application relates to a smooth mechanism and take-up device, smooth mechanism includes: a rotating shaft rotatably provided around a rotation center; the pressing piece is matched and connected with the first end of the rotating shaft in the axial direction and used for providing pressure for the pole piece to be wound; the balancing weight is matched and connected with the second end of the rotating shaft in the axial direction and is used for providing balancing force for balancing the gravity of the pressing piece; and the driving piece is in transmission connection with the rotating shaft and can drive the rotating shaft to rotate around the rotating center. This application utilizes the gravity of balancing rotation axis of balancing weight, the driving piece provides drive power to the rotation axis, rotate with the drive rotation axis, the adjustable piece that compresses tightly of turned angle through the rotation axis is exerted the pressure size on waiting to roll the pole piece, thereby provide suitable pressure to waiting to roll the pole piece, improve the rolling quality of pole piece, in addition, owing to offset the gravity that compresses tightly the piece through the balancing weight, avoid compressing tightly the influence of the gravity of piece to pressure adjustment, improve the control accuracy of pressure adjustment in-process.

Description

Smoothing mechanism and winding device

Technical Field

The application relates to the technical field of battery pole piece processing, in particular to a smoothing mechanism and a winding device.

Background

The electrode assembly is a part in which electrochemical reactions occur in the battery cell, and is an important part constituting the battery cell. The electrode assembly is formed by winding a positive plate, a negative plate and a separation film between the positive plate and the negative plate, and then the positive plate and the negative plate are assembled to form a battery monomer.

When the pole piece (including the positive pole piece and the negative pole piece) is rolled, the pole piece is arranged on the rolling roller, and the pole piece is rolled through the rolling roller to form a pole piece material roll. In the winding process, in order to keep the pole piece in a flat state, certain pressure needs to be applied to the pole piece. However, the unstable pressure applied to the pole piece can result in poor winding quality of the pole piece. For example, too high pressure can cause the pole piece to appear wavy limit, step limit scheduling problem, and too low pressure can cause the pole piece to appear crumpling, bulging limit, drum muscle scheduling problem.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a smoothing mechanism and a winding device for the problem that the winding quality is poor due to unstable pressure applied to the pole piece in the pole piece winding process.

First aspect, this application provides a smooth mechanism is located the top of waiting to receive a roll pole piece direction of gravity for waiting to receive a roll pole piece and provide pressure, smooth the mechanism and include:

a rotating shaft rotatably provided around a rotation center;

the pressing piece is matched and connected with the first end of the rotating shaft in the axial direction and used for providing pressure for the pole piece to be wound;

the balancing weight is matched and connected with the second end of the rotating shaft in the axial direction and is used for providing balancing force for balancing the gravity of the pressing piece;

and the driving piece is in transmission connection with the rotating shaft and can drive the rotating shaft to rotate around the rotating center.

Through above-mentioned structure, because the balancing weight can offset the self gravity that compresses tightly the piece, make the driving force that the driving piece was applyed on the rotation axis compress tightly the piece promptly and apply the pressure on treating the rolling pole piece, through the big or small regulation pressure size of control driving force, make the pressure of rolling in-process not receive the influence of factors such as pressing piece self gravity and book footpath size, improve the pressure regulation precision, ensure to apply the stability of the pressure on treating the rolling pole piece.

In some embodiments, the pressing member is configured to be rotatably fitted on the rotating shaft in the winding direction of the pole piece to be wound.

Through above-mentioned structure, on the one hand, can ensure to compress tightly the smooth support of piece to the pole piece and press, avoid destroying the pole piece structure because of frictional force. On the other hand, the influence of the friction force on the pressure is reduced, and the precision of the pressure adjusting process is higher.

In some embodiments, the weight is movably disposed on the rotating shaft in an axial direction of the rotating shaft.

From this, can adjust the moment of balancing weight through adjusting the position of balancing weight on the rotation axis to make the balancing weight can offset the gravity that compresses tightly the piece better, make lever structure be in balanced state fast.

In some embodiments, the drive end of the driver is fixedly connected to the rotatable shaft. Therefore, the driving end of the driving piece can apply driving force to the rotating shaft more smoothly, the rotating shaft can rotate smoothly as required, and the pressing piece is driven to abut against the pole piece to be wound.

In some embodiments, the smoothing mechanism further comprises a connecting piece, one end of the connecting piece is fixedly connected with the rotating shaft, and the other end of the connecting piece is rotatably connected with the driving end.

Therefore, the moving path of the driving end can be increased by arranging the connecting piece, so that the rotating stroke of the rotating shaft is increased, and the adjusting range of the pressure applied to the pole piece to be wound is expanded.

In some embodiments, the driver is configured as a low friction cylinder with the piston portion of the low friction cylinder acting as the driving end.

The driving piece is set to be a low-friction cylinder, so that the influence of the friction force on the pressure applied to the pole piece to be wound on the driving piece can be reduced, and the control precision of the pressure applied to the pole piece to be wound is improved.

In some embodiments, the smoothing mechanism further comprises a control assembly connected to the drive member, the control assembly being configured to control the amount of drive force output by the drive member.

The size of the driving force applied to the rotating shaft by the driving piece is adjusted through the control assembly, so that the pressing piece is controlled to abut against the pressure on the pole piece to be rolled, the pole piece to be rolled can be rolled smoothly and stably, the problems of wrinkling, edge bulging, wavy edges and the like of the pole piece to be rolled are avoided, and the rolling quality is improved.

In some embodiments, the control assembly includes a controller and a control valve connected to each other, the controller being configured to control opening and closing of the control valve, the control valve being connected to the driving member and configured to deliver air pressure to the driving member.

Through above-mentioned structure, can nimble control the size of the drive power that the driving piece exported to can ensure the pressure size of rolling in-process and keep stable.

In some embodiments, the control valve is configured as an electric proportional valve. The electric proportional valve can smoothly receive the electric signal transmitted by the controller, and the cross-sectional area of the valve core of the electric proportional valve is adjusted according to the size of the electric signal, so that the purpose of adjusting the air pressure conveyed to the low-friction cylinder is achieved, and the pressure is smoothly adjusted.

In a second aspect, the present application provides a winding device comprising a smoothing mechanism as described above.

Above-mentioned smooth mechanism and take-up device, at first form a lever structure jointly on the rotation axis through the balancing weight with compressing tightly the piece, utilize the gravity of balancing rotation axis of balancing weight, on this basis, the driving piece provides drive power to the rotation axis, rotate with the drive rotation axis, the adjustable pressure size that compresses tightly the piece and apply on waiting to roll up the pole piece through the turned angle of rotation axis, thereby provide suitable pressure to waiting to roll up the pole piece, improve the rolling quality of pole piece, furthermore, because the gravity that compresses tightly the piece is offset through the balancing weight, avoid compressing tightly the influence of the gravity of piece to pressure adjustment, improve the control accuracy among the pressure control process.

Drawings

FIG. 1 is a schematic structural view of a smoothing mechanism according to some embodiments of the present application;

description of reference numerals: 100. a smoothing mechanism; 200. pole pieces to be wound; 10. a rotating shaft; 20. a compression member; 30. a counterweight block; 40. a drive member; 50. a connecting member; 60. a control component; 61. a controller; 62. a control valve; 611. an upper computer; 612. a PLC control unit; a. the direction of gravity.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to 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," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

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

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" 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 as used herein are for illustrative purposes only and do not denote a unique embodiment.

At present, the application of the power battery is more and more extensive from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles and electric automobiles, and a plurality of fields such as military equipment and aerospace. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanded.

The battery monomer is the minimum unit of constitution battery, and in battery structure, the battery monomer can be a plurality of, can establish ties or parallelly connected or series-parallel connection between a plurality of battery monomers, and the series-parallel connection means that a plurality of battery monomers are established ties in addition to having parallelly connected. The plurality of battery monomers can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery monomers is accommodated in the box body. Of course, the battery may also be a battery module formed by connecting a plurality of battery cells in series, in parallel, or in series-parallel, and a plurality of battery modules are connected in series, in parallel, or in series-parallel to form a whole and accommodated in the case. The battery may further include other structures, for example, the battery may further include a bus member for achieving electrical connection between the plurality of battery cells.

Each battery cell may be a secondary battery or a primary battery, and may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell can be in a cylinder, a flat body, a cuboid or other shapes.

In the construction of a battery cell, end caps, a casing, an electrode assembly, and other functional components are typically included. Wherein the electrode assembly is a component in which electrochemical reactions occur in the battery cell, the electrode assembly disposed in the case may include one or more. The electrode assembly is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally disposed between the positive electrode sheet and the negative electrode sheet.

The pole piece (including the positive pole piece and the negative pole piece) is often large in area in the production process, and further processing such as cutting and shaping is needed. In order to facilitate transportation, the pole piece needs to be wound, namely the pole piece is wound on a winding shaft to form a pole piece material roll.

In the rolling process, certain pressure needs to be applied to the pole piece, so that the pole piece is in a tensioning state, and the rolling process can be smoother. Therefore, the quality of winding the pole piece depends on the pressure applied on the pole piece. For example, when pressure is too big, the pole piece easily leads to the wavy limit to appear, steps on limit scheduling problem, leads to the rolling quality poor. When the pressure is too small, the problems of pole pieces such as wrinkling, edge bulging, rib bulging and the like are easily caused, and the rolling quality is poor.

Therefore, in the pole piece rolling process, it is very important how to provide a pressure with proper and stable size for the pole piece.

The applicant has noted that the pressure is currently applied to the pole pieces by providing a compression member, and that there are two ways.

Firstly, provide pressure to the pole piece through compressing tightly a self gravity, the pressure that compresses tightly this moment and provide to the pole piece is the constant value, compresses tightly the self gravity of piece promptly. Two problems exist in this mode, on one hand, when pole pieces of different sizes are replaced for rolling, the gravity of the pressing piece is unchanged, the pressure applied by the pressing piece is unchanged, and suitable pressure cannot be provided for the pole pieces of different sizes. On the other hand, as the winding of the pole pieces is carried out, the number of layers of the pole pieces wound on the winding shaft is gradually increased, and the radius of the formed pole piece material roll is gradually increased. The pressing piece is pressed on the pole piece through gravity, the angle of pressure applied by the pressing piece on the pole piece changes along with the change of the radius of the pole piece material roll, and the pressure applied by the pressing piece on the pole piece is changed from gravity to component force of gravity, so that the pressure applied on the pole piece is unstable.

And secondly, the pressure applied to the pole piece by the pressing piece is controlled by the adjusting mechanism. In this way, although the magnitude of the pressure can be adjusted, the total pressure actually exerted on the pole piece is divided into two parts, wherein one part is the pressure controlled by the adjusting mechanism, and the other part is the pressure exerted on the pole piece by the gravity or the component force of the gravity of the pressing member. And the pressure applied to the pole piece by the gravity or the component force of the gravity of the pressing piece can also change along with the rolling of the pole piece. Therefore, even if the pressure is adjusted by the adjusting mechanism, the total pressure applied on the pole piece cannot be controlled to be stable.

Based on the consideration, in order to solve the problem that the pressure provided on the pole piece is unstable in the pole piece rolling process, the applicant designs a smoothing mechanism through deep research, and a lever structure is formed by respectively arranging a pressing piece and a balancing weight at two ends of a rotating shaft so that the self gravity of the pressing piece can be offset by the balancing weight. On the basis, under the action of the driving force of the driving piece, the rotating shaft rotates around the rotating center of the rotating shaft, and pressure is provided for the pole piece through the pressing piece. At the moment, the driving force of the driving piece is the pressure exerted on the pole piece, and the pressure exerted on the pole piece can be accurately adjusted by controlling the driving force of the driving piece, so that the stability of the pressure exerted on the pole piece is ensured.

Referring to fig. 1, an embodiment of the present application provides a smoothing mechanism 100, located above a gravity direction a of a pole piece 200 to be wound, for providing pressure to the pole piece 200 to be wound. The smoothing mechanism 100 includes a rotating shaft 10, a pressing member 20, a weight 30, and a driving member 40. The rotating shaft 10 is rotatably disposed around a rotating center, and the pressing member 20 is coupled to a first end of the rotating shaft 10 in an axial direction for providing a pressing force to the pole piece 200 to be wound. The weight 30 is coupled to a second end of the rotating shaft 10 in the axial direction, and is used for providing a balancing force for balancing the weight of the pressing member 20. The driving member 40 is in transmission connection with the rotating shaft 10 and can drive the rotating shaft 10 to rotate around a rotating center.

It should be noted that the pole piece 200 to be wound is connected to the winding shaft and is wound on the winding shaft under the pressure provided by the smoothing mechanism 100. The rotating shaft 10 is rotatably disposed on an external structure, for example, the rotating shaft 10 may be rotatably disposed on an external frame, or the rotating shaft 10 may be rotatably disposed on a frame above the winding shaft. Furthermore, the rotating shaft 10 can be rotatably disposed by a bearing connection, that is, the rotating shaft 10 can be rotatably disposed on an external frame or the like by a bearing. Of course, the rotating shaft 10 may be rotatably disposed by other structures, for example, by a rotating shaft, which is not described herein.

The driving member 40 is a member that can provide a driving force to the rotary shaft 10 and drive the rotary shaft 10 to rotate about its own rotation center. The pressing piece 20 is a component that is disposed at a first end of the rotating shaft 10 in the axial direction and can be driven by the rotating shaft 10 to abut against the pole piece 200 to be wound so as to provide pressure to the pole piece 200 to be wound. The weight 30 is a weight which is disposed at a second end of the rotating shaft 10, which is far from the pressing member 20 in the axial direction, and can balance the weight of the pressing member 20.

Further, the pressing member 20 and the weight 30 are respectively connected to opposite ends of the rotating shaft 10 in the axial direction of the rotating shaft 10, and the rotation center of the rotating shaft 10 is located between the pressing member 20 and the weight 30. Thus, the pressing member 20, the weight 30 and the rotating shaft 10 together form a lever structure. By controlling the gravity of the weight 30 and the moment of the weight 30, the weight 30 can smoothly offset the gravity of the pressing member 20, i.e. the lever structure is in a balanced state.

At this time, a driving force is applied to the rotary shaft 10 by the driving member 40 to rotate the rotary shaft 10 about the rotation center. When the rotating shaft 10 rotates, the pressing member 20 is driven to rotate synchronously, so that the pressure of the pressing member 20 against the pole piece 200 to be wound can be controlled. Therefore, by controlling the magnitude of the driving force, the adjustment of the magnitude of the pressure applied to the pole piece 200 to be wound can be realized.

Through above-mentioned structure, because the balancing weight 30 can offset the self gravity that compresses tightly piece 20, make driving piece 40 apply the drive power on rotation axis 10 promptly compress tightly 20 and apply the pressure on waiting to roll up pole piece 200, through the big or small regulation pressure size of control drive power, make the pressure of rolling in-process not influenced by factors such as the size of compressing piece 20 self gravity and book footpath size, improve pressure regulation precision, ensure to apply the stability in waiting to roll up the pressure on pole piece 200.

In some embodiments, the pressing member 20 is configured to be rotatably mounted on the rotating shaft 10 along the winding direction of the pole piece to be wound.

Specifically, the pressing member 20 may be rotatably mounted on the rotating shaft 10 at an end away from the weight member 30 through a rotating shaft. When the pressing piece 20 abuts against the pole piece 200 to be wound, the pressing piece 20 rotates around the rotating shaft, so that friction between the pressing piece 20 and the pole piece is converted into rolling friction, and the influence of friction on pressure is effectively reduced. On the one hand, the smooth pressing of the pole piece by the pressing piece 20 can be ensured, and the damage to the pole piece structure due to friction is avoided. On the other hand, the influence of the friction force on the pressure is reduced, and the precision of the pressure adjusting process is higher.

As a specific embodiment, the pressing element 20 may be configured as a pressing wheel, and the pressing wheel is rotatably disposed along the winding direction of the pole piece to be wound. When the pressing wheel is pressed against the pole piece to be wound, the pressing wheel can synchronously rotate along with the winding of the pole piece to be wound. On the basis of ensuring that the pressure wheel stably abuts against the pole piece to be wound, the friction force between the pressure wheel and the pole piece to be wound is reduced as much as possible, and the stability of the pressure provided by the pressure wheel to the pole piece to be wound is improved.

It is understood that in some other embodiments, the pressing member 20 may be configured as other structures, such as a ball or a pressing roller, which will not be described herein.

In some embodiments, the weight block 30 is movably disposed on the rotating shaft 10 in an axial direction of the rotating shaft 10.

First, the weight member 30 is disposed on one end of the rotating shaft 10 away from the pressing member 20 along the axial direction of the rotating shaft 10, so that the weight member 30 and the pressing member 20 can form a lever structure.

The weight block 30 is movably disposed on the rotating shaft 10 along the axial direction of the rotating shaft 10, and the moment of the weight block 30 can be adjusted by adjusting the position of the weight block 30 on the rotating shaft 10, so that the weight block 30 can better offset the gravity of the pressing member 20, and the lever structure is rapidly in a balanced state.

In addition, the weight member 30 may be detachably mounted to the rotation shaft 10 by a screw connection, a snap connection, or the like. Therefore, the balance state of the lever structure can be adjusted by replacing the balancing weights 30 with different masses, and the balance state can be matched with the moment of the balancing weights 30, so that the efficiency of adjusting the balance state is improved.

In some embodiments, the driving end of the driving member 40 is fixedly connected with the rotating shaft 10. Therefore, the driving end of the driving element 40 can apply driving force to the rotating shaft 10 more smoothly, so that the rotating shaft 10 rotates smoothly as required, and the pressing element 20 is driven to abut against the pole piece 200 to be wound.

Specifically, the driving end of the driving element 40 and the rotating shaft 10 may be fixedly connected by welding, or may be fixedly connected by clamping or other methods, which are not described herein.

In some embodiments, the smoothing mechanism 100 further includes a connecting member 50, and one end of the connecting member 50 is fixedly connected to the rotating shaft 10, and the other end is rotatably connected to the driving end.

It should be noted that, on the one hand, in practical applications, the installation space of the driving member 40 is limited. On the other hand, when the driving member 40 drives the rotation shaft 10 to rotate, the movement path of the driving member 40 is limited due to the self-structure. For example, when the driving member 40 is provided as a low friction cylinder, the length of the piston that can extend out of the cylinder body is limited, resulting in a limited rotational stroke in which the piston pushes the rotary shaft 10 to rotate. When the driving member 40 is configured in other structures, such as a ball screw or a slide rail, the moving path is also limited by the size of the structure itself.

Based on this, a connecting piece 50 is arranged between the rotating shaft 10 and the driving piece 40, and the moving path of the driving piece 40 can be increased through the connecting piece 50, so that the rotating stroke of the rotating shaft 10 is increased, and the adjusting range of the pressure applied on the pole piece 200 to be wound is expanded.

Specifically, one end of the connecting member 50 is fixedly connected to the rotating shaft 10 by welding or the like, and the other end is rotatably connected to the driving end of the driving member 40, so that the moving path range of the driving member 40 is increased without affecting the movement of the driving member 40.

In some embodiments, driver 40 is configured as a low friction cylinder with the piston portion of the low friction cylinder acting as the driving end.

The low-friction cylinder is a cylinder in which friction between the piston and the cylinder body is extremely small during movement of the piston. Therefore, the resistance of the piston during movement is very small, so that the cylinder can react sensitively in various states, the movement is stable, and the creeping phenomenon is reduced or even eliminated.

Specifically, the friction coefficient of the low friction cylinder mentioned in the present application is less than or equal to 0.05. The driving end of the driving member 40 is the piston portion of the low friction cylinder, and one end of the piston portion away from the cylinder body is fixedly connected to the rotating shaft 10, and when the piston portion extends out of the cylinder body, the piston portion pushes the rotating shaft 10 to rotate in the direction away from the driving member 40. When the piston portion is retracted into the cylinder, the piston portion pulls the rotary shaft 10 to rotate in a direction approaching the driving member 40.

The driving piece 40 is set to be a low-friction cylinder, so that the influence of the friction force on the pressure applied to the pole piece 200 to be wound on the driving piece 40 can be reduced, and the control precision of the pressure applied to the pole piece 200 to be wound is improved.

In some embodiments, the pacifying mechanism 100 further includes a control assembly 60 coupled to the drive member 40, the control assembly 60 being configured to control the amount of drive force output by the drive member 40.

Specifically, the control assembly 60 is communicatively coupled to the drive member 40. The size of the driving force applied to the rotating shaft 10 by the driving piece 40 is adjusted by the control component 60, so that the pressing piece 20 is controlled to abut against the pressure on the pole piece 200 to be wound, the pole piece 200 to be wound can be wound smoothly and stably, the problems of crumpling, edge bulging, wave edge and the like of the pole piece 200 to be wound are avoided, and the winding quality is improved.

In some embodiments, control assembly 60 includes a controller 61 and a control valve 62 connected to each other, controller 61 being configured to control opening and closing of control valve 62, and control valve 62 being connected to driver 40 and configured to deliver pneumatic pressure to driver 40.

Specifically, controller 61 is communicatively coupled to control valve 62. The controller 61 is operable to input information and control opening and closing of the control valve 62 in accordance with the input information. The control valve 62 is connected to the low-friction cylinder, and when the control valve 62 is opened, air pressure is supplied into the low-friction cylinder, so that the piston extends and retracts in the cylinder, thereby driving the rotating shaft 10 to rotate and driving the pressing member 20 to press against the pole piece 200 to be wound with different pressures. When the control valve 62 is closed, the air pressure is stopped being supplied to the low friction cylinder, at this time, the piston stops moving, the rotating shaft 10 stops rotating, and the pressing member 20 applies a constant pressure to the pole piece 200 to be wound.

Through the structure, the size of the driving force output by the driving piece 40 can be flexibly controlled, and the pressure in the winding process can be kept stable.

In some embodiments, the controller 61 includes an upper computer 611 and a PLC control unit 612 connected to each other, and the PLC control unit 612 is connected to the control valve 62. The upper computer 611 is an operation end, and is configured to input a target pressure parameter and transmit the target pressure parameter to the PLC control unit 612, and the PLC control unit 612 is configured to convert the target pressure parameter into an electrical signal and transmit the electrical signal to the control valve 62.

Specifically, the upper computer 611 is in communication connection with the PLC control unit 612, and the PLC control unit 612 is in communication connection with the control valve 62. The target pressure parameter is input into the upper computer 611, and the upper computer 611 transmits the target pressure parameter to the PLC control unit 612. The PLC control unit 612 converts the target pressure parameter into a corresponding electrical signal, and transmits the electrical signal to the control valve 62, and the control valve 62 converts the electrical signal into a corresponding air pressure and transmits the air pressure to the low friction cylinder.

Through the structure, the low-friction cylinder can drive the pressing piece 20 to output stable target pressure on the pole piece 200 to be wound, so that the pressure can be conveniently adjusted, and the adjusting precision of the winding process is improved.

It can be understood that the PLC control unit 612 may also be replaced by a single chip or other structures such as a computer, and will not be described herein.

In some embodiments, the control valve 62 is configured as an electric proportional valve. The electric proportional valve can smoothly receive the electric signal transmitted by the PLC control unit 612 and adjust the cross-sectional area of the valve core of the electric proportional valve according to the size of the electric signal, so that the purpose of adjusting the air pressure conveyed to the low-friction air cylinder is achieved, and the pressure is smoothly adjusted.

Based on the same concept as the above-mentioned smoothing mechanism 100, the present application provides a winding device including the smoothing mechanism 100 as described above. Winding device can realize the rolling of pole piece, smooths mechanism 100 and can provide suitable and stable pressure to the pole piece in the pole piece rolling process, improves the rolling quality of pole piece.

According to some embodiments of the present application, before the winding of the pole piece begins, the weight 30 is first balanced by adjusting the moment of the weight 30 on the rotating shaft 10 and the mass of the weight 30, so that the weight 30 can smoothly counteract the gravity of the pressing member 20.

Further, a target pressure parameter required during winding is determined according to factors such as the size of the pole piece, and the target pressure parameter is input into the upper computer 611. When winding is started, the upper computer 611 transmits the target pressure parameter to the PLC control unit 612, the PLC control unit 612 converts the target pressure parameter into a corresponding electric signal and transmits the electric signal to the electric proportional valve, and the electric proportional valve converts the electric signal into air pressure and outputs the air pressure to the low-friction air cylinder.

The piston of low friction cylinder moves in the cylinder body under the atmospheric pressure effect, drives rotation axis 10 and rotates to drive and compress tightly piece 20 and support with target pressure and press on waiting to roll pole piece 200, ensure that the pole piece realizes stabilizing the rolling.

Along with the rolling of the pole pieces, the radius of the pole piece material roll is gradually increased, so that the rotating shaft 10 rotates at a certain angle. Meanwhile, the upper computer 611 can generate an updated pressure parameter in real time according to the change of the roll diameter, and transmit the updated pressure parameter to the PLC control unit 612, the PLC control unit 612 converts the updated pressure parameter into a new electrical signal, and transmits the new electrical signal to the electrical proportional valve, and the electrical proportional valve converts the new electrical signal into new air pressure and outputs the new air pressure to the low-friction air cylinder.

Therefore, the pressure provided by the pressing piece 20 to the pole piece can be changed synchronously according to the winding diameter of the pole piece material roll, so that the pressure applied to the pole piece is always kept stable, and the stable winding of the pole piece is ensured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims (10)

1. The utility model provides a smooth mechanism, is located the top of waiting to receive a roll pole piece gravity direction for wait to receive a roll pole piece and provide pressure, its characterized in that smooths the mechanism and includes:

a rotating shaft rotatably provided around a rotation center;

the pressing piece is matched and connected with the first end of the rotating shaft in the axial direction and used for providing pressure for the pole piece to be wound;

the balancing weight is matched and connected with the second end of the rotating shaft in the axial direction and is used for providing balancing force for balancing the gravity of the pressing piece;

and the driving piece is in transmission connection with the rotating shaft and can drive the rotating shaft to rotate around the rotating center.

2. The smoothing mechanism according to claim 1, wherein the pressing member is configured to be rotatably fitted on the rotating shaft in a winding direction of the pole piece to be wound.

3. The smoothing mechanism of claim 1, wherein the weight is movably disposed on the rotating shaft in an axial direction of the rotating shaft.

4. The pacifying mechanism of claim 1, wherein a drive end of the driver is fixedly connected to the rotatable shaft.

5. The pacifying mechanism of claim 4, further comprising a connector, wherein one end of the connector is fixedly connected with the rotating shaft and the other end of the connector is rotatably connected with the driving end.

6. The pacifying mechanism of claim 4, wherein the drive member is configured as a low friction cylinder having a piston portion as the driving end.

7. The mechanism of claim 4, further comprising a control assembly coupled to the drive member, the control assembly configured to control the amount of drive force output by the drive member.

8. The mechanism of claim 7, wherein the control assembly comprises a controller and a control valve connected to each other, the controller being configured to control opening and closing of the control valve, the control valve being connected to the driving member and configured to deliver air pressure to the driving member.

9. The smoothing mechanism of claim 8, wherein the control valve is configured as an electrical proportional valve.

10. A winding device comprising a smoothing mechanism according to any one of claims 1-9.

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