CN219873625U - Multi-material-belt compressing assembly, processing mechanism and battery core winding equipment - Google Patents

Abstract

The embodiment of the utility model discloses a multi-material-belt compressing assembly, a multi-material-belt processing mechanism and a battery cell winding device, wherein the multi-material-belt compressing assembly comprises: the first support is provided with a compression roller; the second support is provided with a pressing plate and a first driving piece; the first driving piece drives the first support to move, so that the press roller can move towards the press plate, and accordingly a pressing force is applied to the multi-material belt between the press roller and the press plate, and the diaphragm of the multi-material belt between the press roller and the press plate is bonded with the pole piece. The embodiment of the utility model can overcome the tail flick problem generated at the cutting part in the winding process of the multi-material belt.

Description

Multi-material-belt compressing assembly, processing mechanism and battery core winding equipment

Technical Field

The utility model belongs to the technical field of battery production equipment, and particularly relates to a multi-material-belt compacting assembly, a multi-material-belt processing mechanism and electric core winding equipment.

Background

During the battery production process, the separator and the pole piece need to be wound together to prepare and form the cell. In the process, the first diaphragm 1, the second diaphragm 2 and the first pole piece 3 in fig. 1 are three layers of material belts, or the first diaphragm 1, the first pole piece 3, the second diaphragm 2 and the second pole piece 4 in fig. 2 are four layers of material belts, so that a multi-material belt is formed. Wherein, the first pole piece 3 and the second pole piece 4 are respectively a cathode pole piece or an anode pole piece.

After the multi-material tape is wound by the reel to a predetermined length, it is necessary to cut the multi-material tape with a cutter, and a section of the multi-material tape from the cutting position to a certain distance from the cutting position is called as a tail of the multi-material tape, and the reel is required to continue winding so as to wind the cut section of the multi-material tape onto the reel. However, during ending, dislocation fluctuation can appear in the multi-material belt, and the pole piece (including the first pole piece 3 or the second pole piece 4) is thicker, and there is the tail problem of getting rid of when the electric core is rolled up, influences electric core coiling alignment degree.

Disclosure of Invention

An object of the embodiment of the utility model is to provide a new technical scheme of a multi-material-belt compressing assembly, so that the alignment degree in the winding process of a battery cell is improved.

According to a first aspect of an embodiment of the present utility model, there is provided a multi-belt compaction assembly comprising:

the first support is provided with a compression roller;

the second support is provided with a pressing plate and a first driving piece;

the first driving piece drives the first support to move, so that the press roller can move towards the press plate, and accordingly a pressing force is applied to the multi-material belt between the press roller and the press plate, and the diaphragm of the multi-material belt between the press roller and the press plate is bonded with the pole piece.

Optionally, the surface of the press roll has a mechanical pattern.

Optionally, the multi-material belt pressing assembly further comprises a heating member for heating the pressing plate.

Optionally, the heating element is disposed on a side of the platen remote from the platen roller.

Alternatively, the pressing plate has a box-type structure, and the heating member is inserted into the box-type structure.

Optionally, the multi-material belt compacting assembly further comprises a thermocouple for measuring the temperature of the pressing plate, the thermocouple being electrically connected with the heating element, so as to adjust the power of the heating element according to the temperature.

Optionally, the press roller is rotatably mounted on the first support.

According to another aspect of an embodiment of the present utility model, there is provided a multi-web handling mechanism including:

a multi-belt compression assembly as claimed in any one of the preceding claims;

a cutter assembly;

after the cutter assembly cuts off the multi-material belt, the pressing assembly applies pressing force to the multi-material belt between the pressing roller and the pressing plate, so that the diaphragm of the multi-material belt between the pressing roller and the pressing plate is bonded with the pole piece.

Optionally, the multi-material-belt processing mechanism further comprises a second driving member for driving the second support and the third driving member to move in the first direction;

the third driving piece is used for driving the cutter assembly to move along a second direction, and the first direction is perpendicular to the second direction.

Optionally, the cutter assembly comprises:

the third support is provided with a first cutter;

the fourth support is provided with a second cutter and a fourth driving piece;

the fourth driving piece drives the third support to move, so that the first cutter can move towards the second cutter, and the multi-material belt between the first cutter and the second cutter is cut off.

According to still another aspect of the embodiments of the present utility model, there is provided a cell winding apparatus including:

a multi-web handling mechanism as claimed in any one of the preceding claims;

a turret provided with a reel, the turret being rotatable so that the reel can reach a first station, a second station, from which a plurality of tapes are conveyed towards the second station;

the cutter assembly is located upstream of the multi-belt compression assembly in the multi-belt transport direction.

Optionally, the multi-material-belt processing mechanism includes a second driving member for driving the second support and the third driving member to move in a first direction; the third driving piece is used for driving the cutter assembly to move along a second direction, and the first direction is perpendicular to the second direction; the first direction is the axial direction of the scroll, and the second direction is the multi-material-belt conveying direction from the first station to the second station.

Alternatively, at the first station, the reel winds the multi-material tape of a predetermined length, then the turret rotates to enable the reel to reach the second station, the cutter assembly cuts off the multi-material tape between the first station and the second station, then the first driving piece drives the first support to move, so that the press roller moves towards the press plate, and therefore, between the first station and the second station, the pole piece and the diaphragm of the multi-material tape between the press roller and the press plate are pressed and bonded, the reel continues to wind the multi-material tape, and the press roller and the press plate continue to provide pressing force until the pole piece and the diaphragm of the cut-off part of the multi-material tape are pressed and bonded.

Optionally, there are at least two reels, and the reels at the first station clamp the multi-material tape before the cutter assembly cuts the multi-material tape.

Optionally, at least three reels are provided on the turret, the turret being rotatable such that each of the reels can reach a first station, a second station and a third station; when the reel reaches the third station, the battery cell is fed.

The utility model has the technical effects that: after the multi-material belt is cut off, the multi-material belt pressing assembly can drive the first support to move by using the first driving piece, the first support drives the press roller to move towards the press plate, the distance between the press roller and the press plate is reduced, the press roller and the press plate provide pressing force for the multi-material belt, the pole piece and the diaphragm of the multi-material belt between the press roller and the press plate are pressed, the tail part of at least one part of the multi-material belt is bonded with the pole piece by using the self-belt viscosity of the diaphragm, the technical effect of preventing the tail from being thrown can be achieved, and the alignment degree in the winding process of the battery cell is improved.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a schematic illustration of a typical multi-belt construction;

FIG. 2 is a schematic illustration of another exemplary multi-belt configuration;

FIG. 3 is a schematic view of a multi-belt compacting assembly according to an embodiment of the utility model;

FIG. 4 is a schematic view of a cutter assembly according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of the working principle of the battery cell winding device according to the embodiment of the present utility model;

fig. 6 is a schematic view of the multi-belt of fig. 1 after being compressed by the multi-belt compressing assembly according to the embodiment of the present utility model.

Wherein: 1. a first diaphragm; 2. a second diaphragm; 3. a first pole piece; 4. a second pole piece; 5. a plurality of material belts; 6. a turret; 7. a first reel; 8. a first station; 9. a second reel; 10. a second station; 11. a third reel; 12. a third station; 13. a battery cell; 14. a second driving member; 15. a third driving member; 100. a multi-material belt compacting assembly; 101. a first support; 102. a press roller; 103. a second support; 104. a pressing plate; 105. a first driving member; 106. an adapter plate; 107. a first guide bar; 108. a heating member; 109. a thermocouple; 110. a box-type structure; 200. a cutter assembly; 201. a third support; 202. a first cutter; 203. a fourth support; 204. a second cutter; 205. a fourth driving member; 206. and a second guide rod.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1, a typical multi-material tape includes three layers of a first separator 1, a second separator 2, and a first electrode sheet 3, wherein the first electrode sheet 3 may be a cathode electrode sheet or an anode electrode sheet.

Referring to fig. 2, another exemplary multi-material tape includes four layers of a first separator 1, a first pole piece 3, a second separator 2, and a second pole piece 4. Wherein, the first pole piece 3 is a cathode pole piece and the second pole piece 4 is an anode pole piece, or the first pole piece 3 is an anode pole piece and the second pole piece 4 is a cathode pole piece.

In the following description, three layers of multi-material tape are described as an example in fig. 1, but the multi-material tape pressing assembly 100, the cutter assembly 200, the multi-material tape processing mechanism, and the cell winding apparatus in the embodiment of the present utility model can process four layers of multi-material tape in fig. 2. Meanwhile, for simplicity, the first and second diaphragms 1, 2 may be collectively referred to as "diaphragms", and the first and second pole pieces 3, 4 may be collectively referred to as "pole pieces". Meanwhile, although in the embodiments of the present utility model, the multi-material tape and the diaphragms, pole pieces included therein are described, such description is merely for clearly describing the operation of the respective components, mechanisms and devices, and the multi-material tape should not be regarded as a part of the respective components, mechanisms and devices of the embodiments of the present utility model.

Referring to fig. 3, the multi-belt pressing assembly 100 of the present embodiment includes: a first support 101 and a second support 103. Wherein the first support 101 is provided with a press roller 102, and the second support 103 is provided with a press plate 104 and a first driving member 105. In the embodiment shown in fig. 3, the first driving member 105 is mounted to the adapter plate 106, and the adapter plate 106 is then fixedly connected to the second support 103, so that in the embodiment shown in fig. 3, the first driving member 105 is indirectly mounted to the second support 103, and the adapter plate 106 can thus also be regarded as a part of the second support 103. However, in practice, the second support 103 can also be an L-shaped plate, so that the first driving member 105 is directly mounted to the second support 103. Therefore, whether or not an adapter such as adapter plate 106 is used, both direct and indirect mounting fall within the scope of "mounting", and the mounting of the various components of cutter assembly 200 in fig. 4 is similar, and therefore will not be described in detail.

In the embodiment shown in fig. 3, the first driving member 105 is a cylinder, the cylinder body of which is mounted to the second support 103, the piston rod of which is connected to the first support 101, so that the extension and retraction of the piston rod 101 can drive the first support 101 to move, and when the piston rod is extended, the first support 101 moves toward the pressing plate 104, so that the pressing roller 102 can move toward the pressing plate 104, i.e., the distance between the pressing roller 102 and the pressing plate 104 is reduced, thereby applying a pressing force to the multi-material tape 5 (shown in fig. 5) located between the pressing roller 102 and the pressing plate 104, and bonding the membrane of the multi-material tape 5 located between the pressing roller 102 and the pressing plate 104 to the pole piece at a predetermined distance from the cut-off position of the multi-material tape 5. The predetermined distance can be adjusted by adjusting the distance between the cutter and the press roll 102, the platen 104. In one embodiment, the compression roller 102 and the pressing plate 104 apply a short compression force to the multi-material belt 5, the piston rod of the first driving member 105 is retracted, the first support 101 drives the compression roller 102 to be far away from the pressing plate 104, and the compression force applied to the multi-material belt 5 is relieved, at least in the compression position of the compression roller 102 and the pressing plate 104, the diaphragm and the pole piece can be bonded together, and although the compression position is a distance away from the cutting position, adverse effects caused by the tail flicking problem can be reduced. In another embodiment, the pressing roller 102 and the pressing plate 104 can continuously provide pressing force, as the multi-material belt 5 passes between the pressing roller 102 and the pressing plate 104, the multi-material belt 5 can be pressed from an initial pressed position to a cut-off position, so that the diaphragm at the whole tail part and the pole piece are bonded together to form a state shown in fig. 6, after the diaphragm at the cut-off position and the pole piece are pressed and bonded, the piston rod of the first driving member 105 is retracted, the first support 101 drives the pressing roller 102 to be far away from the pressing plate 104, and the pressing force applied to the multi-material belt 5 is relieved. The principle of compression bonding is that under the condition that the compression roller 102 and the pressure plate 104 apply compression force to the multi-material belt 5, the first diaphragm 1, the second diaphragm 2 and the first pole piece 3 can be bonded together by utilizing the self-belt viscosity of the diaphragms, the technical effect of preventing tail flicking can be realized, and the alignment degree in the winding process of the battery cell is improved. The first driving member 105 can also drive the first support 101 in a gear transmission or a worm gear transmission manner by using a motor or the like as a power source, and thus the present utility model is not limited to a specific driving form of the first driving member 5.

By setting the first driving member 105, for example, changing the piston stroke of the cylinder, or changing the motor power, the pressing force between the pressing roller 102 and the pressing plate 104 can be adjusted.

The surface of the press roll 102 has a mechanical pattern (not shown). The mechanical pattern is a surface structure caused by a machining process, and may be scores, cut lines, punched grooves or indentations, serrations, roll-cut lines, etc., so that the surface of the press roll 102 is uneven. Such a mechanical pattern can increase the pressure exerted by the press roller 102 and the press plate 104 on the multi-material belt 5, so as to facilitate the adhesion between the first diaphragm 1, the second diaphragm 2 and the first pole piece 3.

A first guide bar 107 is also provided between the first support 101 and the second support 103. One end of the first guide rod 107 is fixedly connected with the first support 101, and the other end of the first guide rod passes through a through hole on the adapter plate 106 and is in sliding fit with the adapter plate 106. The first guide bar 107 provides a guiding effect on the movement of the first support 101, preventing the rotation of the first support 101.

The multi-belt compression assembly 100 further includes a heating element 108, the heating element 108 being configured to heat the platen 104. Like this, when compression roller 102 compresses tightly many material area 5 with clamp plate 104, clamp plate 104 can heat first diaphragm 1, second diaphragm 2 and first pole piece 3 to improve the viscidity of first diaphragm 1, second diaphragm 2, be convenient for bond first diaphragm 1, second diaphragm 2 and first pole piece 3 in an organic whole better.

The heating element 108 is arranged on the side of the platen 104 remote from the press roll 102, so that the heating element 108 and the multi-material belt 5 are prevented from adversely affecting each other when the side of the platen 104 close to the press roll 102 contacts the multi-material belt 5.

The platen 104 has a box-type structure 110, and the box-type structure 110 can be formed by bending the platen 104 itself, or can be formed by bending a separate plate member and then connecting the plate member to the platen 104 by welding or the like, and in either case, the box-type structure 110 can be considered to be part of the platen 104. The heating element 108 is inserted into the interior of the box structure 110 so that heat can be concentrated on the platen 104, reducing the loss of heat generated by the heating element 108.

The multi-belt compaction assembly 100 further includes a thermocouple 109, the thermocouple 109 being used to measure the temperature of the platen 104. The thermocouple 109 is electrically connected with the heating element 108, so that the power of the heating element 108 is adjusted according to the temperature measured by the thermocouple 109, the temperature of the pressing plate 104 is maintained in a proper range, the effect that the bonding performance is improved due to too low temperature is avoided, and the damage to the multiple material belts 5 due to too high temperature can be avoided.

In this embodiment, the pressing roller 102 is rotatably mounted on the first support 101, which has the advantage that the heated first diaphragm 1, the second diaphragm 2 and the first pole piece 3 can be simultaneously transferred in the downstream direction shown in fig. 5 while the pressing plate 104 performs the hot pressing of the multi-material tape 5, thereby avoiding damaging the diaphragm and the pole piece.

Referring to fig. 3 and 5, the multi-material-belt processing mechanism of the present embodiment includes: a multi-belt compression assembly 100 and a cutter assembly 200. The cutter assembly 200 is used to sever the multi-material tape 5. The multi-material tape compressing assembly 100 is disposed adjacent to the cutter assembly 200, and after the cutter assembly 200 cuts the multi-material tape 5, the compressing assembly 100 applies a compressing force to the multi-material tape 5 located between the pressing roller 102 and the pressing plate 104, and bonds the separator of the multi-material tape 5 located between the pressing roller 102 and the pressing plate 104 to the pole piece at a predetermined distance from the cut-off position of the multi-material tape 5, which can be adjusted by adjusting the distance between the cutter assembly 200 and the multi-material tape compressing assembly 100. In one embodiment, the compression roller 102 and the pressing plate 104 apply a short compression force to the multi-material belt 5, the piston rod of the first driving member 105 is retracted, the first support 101 drives the compression roller 102 away from the pressing plate 104, and the compression force applied to the multi-material belt 5 is released, at least in the compression position of the compression roller 102 and the pressing plate 104 of the multi-material belt compression assembly 100, the diaphragm (including the first diaphragm 1 and the second diaphragm 2) and the pole piece (including the first pole piece 3 and/or the second pole piece 4) can be bonded together, and although the compression position is a distance from the cutting position, adverse effects caused by the tail flicking problem can be reduced. In another embodiment, the pressing roller 102 and the pressing plate 104 can continuously provide pressing force, so that as the multi-material belt 5 passes between the pressing roller 102 and the pressing plate 104, the multi-material belt 5 can be pressed from an initial pressed position to a cut-off position, so that the diaphragm at the whole tail part and the pole piece are bonded together to form the state shown in fig. 6, after the diaphragm at the cut-off position and the pole piece are pressed and bonded, the piston rod of the first driving member 105 is retracted, the first support 101 drives the pressing roller 102 to be far away from the pressing plate 104, and the pressing force applied to the multi-material belt 5 is relieved. The principle of compression bonding is that under the condition that the compression roller 102 and the pressure plate 104 apply compression force to the multi-material belt 5, the first diaphragm 1, the second diaphragm 2 and the first pole piece 3 can be bonded together by utilizing the self-belt viscosity of the diaphragms, the technical effect of preventing tail flicking can be realized, and the alignment degree in the winding process of the battery cell is improved.

The multi-belt handling mechanism of the present embodiment further comprises a second driving member 14, the second driving member 14 being configured to drive the second support 103 and the third driving member 15 of the multi-belt pressing assembly 100 in a first direction. In this embodiment, the first direction is a direction perpendicular to the paper surface, or the axial direction of the first reel 7, the second reel 9, and the third reel 11. The third driving member 15 is configured to drive the cutter assembly 200 to move in the second direction, so that the distance between the cutter assembly 200 and the multi-material-tape pressing assembly 100, i.e., the pressing position of the pressing roller 102 and the pressing plate 104, and the cutting position of the multi-material-tape 5, are adjusted, and accordingly, the length of the tail is also adjusted. In this embodiment, the second direction is the conveying direction of the multi-material tape 5 from the first station 8 to the second station 10, that is, the direction indicated by the arrow C in fig. 5. Thus, the first direction is perpendicular to the second direction. Similar to the first driving member 105, the second driving member 14 and the third driving member 15 can be driven by a variety of driving methods such as a cylinder and a motor. Taking the second driving piece 14 and the third driving piece 15 as an example, the cylinder body and the second support 103 of the third driving piece 15 are directly or indirectly connected to the piston rod of the second driving piece 14 through an adapter, and the cylinder body and the second support 103 of the third driving piece 15 can be driven to move positively or negatively in the first direction through the expansion and contraction of the piston rod. The cutter assembly 200 is directly or indirectly connected to the piston rod of the third driving member 15 through an adapter, so that controlling the extension and retraction of the piston rod of the third driving member 15 can drive the cutter assembly 200 to move positively or negatively in the second direction.

The second driving member 14 drives the second support 103 of the multi-material-belt pressing assembly 100 to move in the first direction, so that the position of the multi-material belt 5 between the pressing roller 102 and the pressing plate 104 can be adjusted, the pressing roller 102 and the pressing plate 104 can completely press the multi-material belt 5 within the width range (i.e., the dimension in the direction perpendicular to the paper surface) of the multi-material belt 5, and at least a part of the diaphragm at the tail of the multi-material belt 5 can be completely bonded with the pole piece. The second driving member 14 drives the third driving member 15 to move along the first direction, and at this time, the third driving member 15 can drive the cutter assembly 200 to move in the first direction, so as to ensure that the cutter assembly 200 can completely cut the multi-material tape 5 within the width range of the multi-material tape 5. And the third driving member 15 drives the cutter assembly 200 in the second direction so that the cutter assembly 200 can be moved toward or away from the multi-tape pressing assembly 100 to adjust the cutting position of the multi-tape 5. Thus, the cutter assembly 200 can move along the axial direction of the first reel 7 and/or along the conveying direction of the multi-material tape, which is beneficial to adjusting the position of the cutter assembly 200 for cutting the multi-material tape 5, and ensuring the cutting integrity.

Referring to fig. 4, the cutter assembly 200 includes: a third holder 201, the third holder 201 being mounted with a first cutter 202; a fourth support 203, the fourth support 203 being fitted with a second cutter 204 and a fourth drive 205.

The fourth driving member 205 can be in the form of a cylinder or a motor to drive the third support 201 to move, so that the first cutter 202 can move toward the second cutter 204, thereby cutting the multi-material tape 5 between the first cutter 202 and the second cutter 204. The second guide bar 206 has one end connected to the third support 201 and the other end passing through the through hole of the fourth support 203 and slidably engaging with the fourth support 203 to provide a guide for the third support 201 during its movement, preventing the first cutter 202 from rotating relative to the second cutter 204.

Referring to fig. 5, the cell winding apparatus of the present embodiment includes: a multi-web handling mechanism, turret 6, as described above.

The turret 6 is provided with a reel. Specifically, in the embodiment shown in fig. 5, the turret 6 is provided with three reels, a first reel 7, a second reel 9 and a third reel 11, respectively. The first reel 7 is located at the position of the first station 8, the second reel 9 is located at the position of the second station 10, and the third reel 11 is located at the position of the third station 12. The turret 6 is rotatable so that the first reel 7 can reach the second and third stations 10, 12 in sequence from the first station 8, and correspondingly the second reel 9 can reach the third and first stations 12, 8 in sequence from the second station 10, and the third reel 11 can reach the first and second stations 8, 10 in sequence from the third station 12. That is, each spool can reach three different stations as the turret 6 rotates. The multi-material web 5 is transported from the first station 8 towards the second station 10, as indicated by arrow C in fig. 5.

The multi-material-belt handling mechanism is mounted to a frame (not shown) near the turret 6, and after the mounting is completed, the aforementioned first direction is exactly the axial direction of the reels (including the first reel 7, the second reel 9, and the third reel 11), and the aforementioned second direction is exactly the conveying direction of the multi-material-belt 5 from the first station 8 to the second station 10, as indicated by arrow C in fig. 5. The cutter assembly 200 is located upstream of the multi-belt compression assembly 100 in the multi-belt conveying direction.

Taking the working process of the second reel 9 as an example, the second reel 9 is firstly located at the first station 8, the multi-material strip 5 formed by the first diaphragm 1, the second diaphragm 2, the first pole piece 3 and the second pole piece 4 is conveyed to the first station 8, and at the station, the second reel 9 rotates anticlockwise along the R2 direction, and the multi-material strip 5 with a preset length is wound. The turret 6 is then rotated clockwise in the direction R1, the second reel 9 reaching the second station 10, and the first reel 7 reaching the first station 8 from the third station 12, in which case the situation is as shown in fig. 5. Since the second pole piece 4 is first cut off, only the first diaphragm 1, the second diaphragm 2 and the first pole piece 3 are shown in fig. 5, but in practice the second pole piece 4 has been wound on the second reel 9, thereby forming the cell 13. The second driving member 14 drives the multi-material-belt compressing assembly 100 and the cutter assembly 200 to move along the first direction, the third driving member 15 drives the cutter assembly 200 to move along the second direction, so that the cutter assembly 200 and the multi-material-belt compressing assembly 100 reach proper positions, the cutter assembly 200 cuts off the multi-material-belt 5, and the compressing assembly 100 compresses the multi-material-belt 5 at the downstream of the cut-off position, so that the first diaphragm 1, the second diaphragm 2 and the first pole piece 3 are bonded together by means of the viscosity of the first diaphragm 1 and the second diaphragm 2. The compression roller 102 and the pressing plate 104 can apply short-term compression force to the multi-material belt 5, the piston rod of the first driving piece 105 is retracted, the first support 101 drives the compression roller 102 to be far away from the pressing plate 104, the compression force applied to the multi-material belt 5 is relieved, at least in the compression position of the compression roller 102 and the pressing plate 104, the diaphragm and the pole piece can be bonded together, and although the compression position is a certain distance away from the cutting position, adverse effects caused by the tail flicking problem can be reduced. The cutter assembly 200 is located upstream of the multi-belt compression assembly 100 in the direction of multi-belt 5 conveyance. Thus, after the cutter assembly 100 cuts off the multi-material belt 5, at least a part of the tail of the multi-material belt 5 can be compressed by the multi-material belt compressing assembly 100, and the diaphragm and the pole piece are bonded together, so that the tail-flicking problem is avoided in the process that the second scroll 9 continuously winds up the multi-material belt 5 to form the battery cell 13.

Alternatively, in another embodiment, the matching relationship between each device and each part of the cell winding device in terms of time sequence is as follows: at the first station 8, the second reel 9 winds the multi-material strip 5 of a predetermined length, then the turret 6 rotates clockwise in the direction of R1, causing the second reel 9 to reach the second station 10, then the cutter assembly 200 cuts the multi-material strip 5 between the first station 8 and the second station 10, then the first driving member 105 drives the first support 101 to move, causing the press roller 102 to move towards the press plate 104, so that the first pole piece 3 of the multi-material strip 5 between the press roller 102 and the press plate 104 is pressed against the first diaphragm 1, the second diaphragm 2, and the first diaphragm 1, the second diaphragm 2 and the first pole piece 3 are bonded together by means of the tackiness of the first diaphragm 1, the second diaphragm 2 themselves between the first station 8 and the second station 10. The reel continues to wind the multi-material tape 5, and the pressing roller 102 and the pressing plate 104 continuously provide pressing force until the pole piece and the diaphragm at the cutting position of the multi-material tape 5 are pressed and bonded together, so that the tail part shown in fig. 6 is completely pressed and bonded together from the cutting position of the multi-material tape 5 to the position where the pressing roller 102 and the pressing plate 104 are initially pressed, and a better tail-flick preventing effect is obtained. If the pressing roller 102 and the pressing plate 104 are pressed only once, and then the pressing roller 102 and the pressing plate 104 are far away from each other and no pressing force is applied, only a part of the diaphragm and the pole piece at the whole tail part can be pressed and bonded, and although the effect of preventing the tail from being thrown out can be achieved, the effect that the pressing roller 102 and the pressing plate 104 continuously provide the pressing force is better is obvious.

Optionally, at least two reels are present on the turret 6, and a first reel 7 at the first station 8 clamps the multi-material strip 5 before the cutter assembly 200 cuts the multi-material strip 5, thereby preventing positional deviations from being created by pulling the multi-material strip 5 during cutting and compaction.

In the embodiment shown in fig. 5, three reels, a first reel 7, a second reel 9 and a third reel 11, respectively, are provided on the turret 6, the turret 6 being rotatable such that each reel can reach a first station 8, a second station 10 and a third station 12. The winding shaft positioned at the first station 8 winds the multi-material tape with a preset length, then the turret 6 rotates to enable the winding shaft positioned at the first station 8 to reach the second station 10, the cutter assembly 200 cuts off the multi-material tape 5 between the first station 8 and the second station 10, the first driving piece 105 drives the first support 101 to move so as to enable the press roller 102 to move towards the press plate 104, and thus the pole piece and the diaphragm of the multi-material tape 5 between the press roller 102 and the press plate 104 are pressed and adhered together between the first station 8 and the second station 10, the winding shaft positioned at the second station 10 winds the multi-material tape 5 to form the battery core 13, then the turret 6 continues to rotate to enable the winding shaft positioned at the second station 10 to reach the third station 12, and accordingly the battery core 13 is subjected to blanking, and at the moment, the battery core 13 can be taken down by a mechanical arm and other devices for further processing.

In practical application, the number of the reels and the stations can be increased or decreased, for example, only two reels of the first reel 7 and the second reel 9 are adopted according to the production tact requirement, and two stations of the first station 8 and the second station 10 are arranged, so that the battery cells 13 need to be fed in the rotating process of the turret 6. Alternatively, more than three reels and more than three stations can be provided, so that different production cycle requirements for the multi-material web 5 can be met. Alternatively, only one first reel 7 is used, three different stations being provided for winding, cutting and blanking the multi-material tape 5 by the first reel 7, respectively. The number of the reels and the number of the stations can be increased according to the actual production requirement.

After the cutting is completed, the fourth driving member 205 drives the first cutter 202 to move in a direction away from the second cutter 204; after the compaction is completed, the first driving member 105 drives the first support 101 to move so as to drive the platen 102 to move in a direction away from the platen 104. The multi-material web 5 then continues to be fed into the next winding cycle.

The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (15)

1. A multi-belt compression assembly (100) comprising:

a first support (101), the first support (101) being provided with a press roll (102);

a second support (103), the second support (103) being mounted with a platen (104) and a first drive (105);

the first driving piece (105) drives the first support (101) to move, so that the press roller (102) can move towards the press plate (104), and accordingly a pressing force is applied to the multi-material belt (5) between the press roller (102) and the press plate (104), and the diaphragms of the multi-material belt (5) between the press roller (102) and the press plate (104) are bonded with the pole piece.

2. The multi-belt compaction assembly (100) according to claim 1, wherein the surface of the compaction roller (102) has a mechanical pattern.

3. The multi-belt compaction assembly (100) according to claim 1, further comprising a heating element (108), the heating element (108) being configured to heat the platen (104).

4. A multi-belt compaction assembly (100) according to claim 3, wherein the heating element (108) is arranged at a side of the platen (104) remote from the press roller (102).

5. The multi-belt compression assembly (100) of claim 4, wherein the platen (104) has a box-type structure (110), the heating element (108) being inserted inside the box-type structure (110).

6. A multi-belt compaction assembly (100) according to claim 3, further comprising a thermocouple (109), the thermocouple (109) being adapted to measure the temperature of the platen (104), the thermocouple (109) being electrically connected to the heating element (108) to adjust the power of the heating element (108) in dependence of the temperature.

7. The multi-belt compaction assembly (100) according to claim 1, wherein the compaction roller (102) is rotatably mounted on the first support (101).

8. A multi-web handling mechanism comprising:

the multi-belt compression assembly (100) of any one of claims 1 to 7;

a cutter assembly (200);

after the cutter assembly (200) cuts off the multi-material belt (5), the pressing assembly (100) applies a pressing force to the multi-material belt (5) between the pressing roller (102) and the pressing plate (104) so that the diaphragm of the multi-material belt (5) between the pressing roller (102) and the pressing plate (104) is bonded with the pole piece.

9. A multi-web handling mechanism according to claim 8, further comprising a second drive member (14), the second drive member (14) being adapted to drive the second support (103) and third drive member (15) in a first direction;

the third drive member (15) is configured to drive the cutter assembly (200) in a second direction, the first direction being perpendicular to the second direction.

10. The multi-web handling mechanism of claim 8, wherein the cutter assembly (200) comprises:

a third support (201), the third support (201) being mounted with a first cutter (202);

a fourth support (203), the fourth support (203) being mounted with a second cutter (204) and a fourth drive (205);

the fourth driving piece (205) drives the third support (201) to move, so that the first cutter (202) can move towards the second cutter (204), and the multi-material belt between the first cutter (202) and the second cutter (204) is cut off.

11. A cell winding apparatus, comprising:

a multi-web handling mechanism according to any one of claims 8 to 10;

turret (6), said turret (6) being provided with a reel, said turret being rotatable so that it can reach a first station (8), a second station (10), from which first station (8) a plurality of tapes (5) are transported towards said second station (10);

the cutter assembly (200) is located upstream of the multi-belt compaction assembly (100) in the multi-belt transport direction.

12. The cell winding device according to claim 11, wherein the multi-web handling mechanism comprises a second drive member (14), the second drive member (14) being adapted to drive the second support (103) and the third drive member (15) in a first direction; -the third drive (15) is adapted to drive the cutter assembly (200) in a second direction, the first direction being perpendicular to the second direction; wherein the first direction is the axial direction of the reel, and the second direction is the multi-material-belt conveying direction from the first station (8) to the second station (10).

13. The cell winding apparatus according to claim 11, wherein in the first station (8) the reel winds a predetermined length of multi-material tape (5), then the turret (6) rotates to bring the reel to a second station (10), the cutter assembly (200) cuts the multi-material tape between the first station (8) and the second station (10), then the first drive (105) drives the first support (101) to move the press roller (102) towards the press plate (104), so that between the first station (8) and the second station (10) a pole piece of the multi-material tape (5) between the press roller (102) and the press plate (104) is pressed and bonded with a diaphragm, and the reel continues to wind the multi-material tape (5) until the press roller and the press plate continue to provide a pressing force until the cut-off of the multi-material tape (5) is pressed and bonded with the diaphragm.

14. The cell winding device according to claim 13, wherein there are at least two reels, the reels at the first station (8) clamping the multi-material tape (5) before the cutter assembly (200) cuts the multi-material tape (5).

15. The cell winding device according to claim 14, characterized in that at least three reels are provided on the turret (6), the turret (6) being rotatable so that each of the reels can reach a first station (8), a second station (10) and a third station (12);

when the reel reaches the third station (12), the battery cell (13) is blanked.