CN216966414U - A high-speed slicing device and lamination equipment - Google Patents

Abstract

The utility model relates to the technical field of battery processing equipment, in particular to a high-speed slicing device and lamination equipment. The high-speed slicing apparatus includes: the first cutting unit is provided with a first cutter, and the first cutter is suitable for moving up and down along the vertical direction; the second cutting unit is arranged at the downstream of the first cutting unit along the conveying direction of the pole piece material belt and is provided with a second cutter, and the second cutter is suitable for moving up and down along the vertical direction; the first conveying mechanism is arranged at the upstream of the first cutting unit, provides guidance for the movement of the pole piece material belt and is suitable for conveying the pole piece material belt into the first cutting unit; and the second conveying mechanism is arranged between the first cutting unit and the second cutting unit and is suitable for providing guidance for conveying the pole piece material strap cut by the first cutting unit. The high-speed slicing device provided by the utility model realizes that the two cutting units simultaneously cut the sheet material belt, increases the number of pole pieces obtained by single cutting, and further improves the slicing rate.

Description

A high-speed slicing device and lamination equipment

technical field

The utility model relates to the technical field of battery processing equipment, in particular to a high-speed slicing device and a stacking device.

Background technique

With the rapid development of the lithium battery industry, the production requirements for lithium batteries are getting higher and higher. At present, the square cutting and stacking technology is one of the most advanced lithium-ion battery manufacturing technologies. Among them, the slicing process is before the pole pieces are stacked. In the lithium-ion battery production line, the pole piece strip is cut into a single pole piece for assembling the battery by the slicing device, so the slicing efficiency of the slicing device directly affects the overall production rate of the battery. However, the current slicing device The slicing rate of the battery has reached the bottleneck, and it is difficult to continue to improve, thus limiting the lamination efficiency, which in turn affects the battery production efficiency of the entire production line, which is not conducive to improving work efficiency and reducing production costs.

Utility model content

Therefore, the technical problem to be solved by the present invention is to overcome the defect of the low slicing rate of the slicing device in the prior art, so as to provide a high-speed slicing device and a stacking device that can improve the slicing rate.

In order to solve the above-mentioned technical problems, a kind of high-speed slicing device provided by the utility model comprises:

a first cutting unit, having a first cutting knife, the first cutting knife is adapted to move up and down in a vertical direction;

The second cutting unit is arranged downstream of the first cutting unit along the conveying direction of the pole piece material belt, and has a second cutting knife, and the second cutting knife is suitable for moving up and down in the vertical direction;

a first conveying mechanism, arranged upstream of the first cutting unit, provides guidance for the movement of the pole piece material belt, and is suitable for conveying the pole piece material belt to the first cutting unit;

A second conveying mechanism, disposed between the first cutting unit and the second cutting unit, is adapted to provide guidance for the conveying of the pole piece strips cut by the first cutting unit.

Optionally, the first cutting unit further includes a first knife seat, and the first knife seat is arranged below the first cutting knife and is suitable for cooperating with the first cutting knife;

The second cutting unit further includes a second knife seat, the second knife seat is disposed below the second cutting knife and is suitable for matching with the second cutting knife.

Optionally, the first conveying mechanism includes: a first driving roller and a first driven roller, the first driving roller is arranged below the pole piece material belt, and the first driven roller is arranged on the pole piece Above the sheet material belt, the first driving roller is suitable for providing a driving force for the conveying of the pole piece material belt, and the first driven roller is suitable for clamping the pole piece in cooperation with the first driving roller Strip;

The second conveying mechanism includes: a second driving roller and a second driven roller, the second driving roller is arranged below the pole piece material belt, the second driven roller is arranged above the pole piece material belt, The second driving roller is adapted to provide a driving force for conveying the pole piece material belt, and the second driven roller is suitable for clamping the pole piece material belt in cooperation with the second driving roller.

Optionally, the high-speed slicing device further includes: a driving roller driving unit adapted to drive the first driving roller and/or the second driving roller to rotate.

Optionally, the high-speed slicing device further includes: a driven roller driving unit, adapted to drive the first driven roller and/or the second driven roller to compress the pole piece material belt.

Optionally, the first cutting unit further includes: a first cutter driving unit, connected with the first cutter, and adapted to drive the first cutter to move up and down;

The second cutting unit further includes: a second cutter driving unit, connected with the second cutter, and adapted to drive the second cutter to move up and down.

Optionally, the high-speed slicing device further includes: a driving roller disposed downstream of the second cutting unit, adapted to provide the pole piece material belt with a driving force along the conveying direction.

Optionally, the high-speed slicing device further includes: a pressing roller disposed opposite to the driving roller and adapted to cooperate with the driving roller to clamp the pole piece material strip.

Optionally, the high-speed slicing device further includes: a driving unit for driving the driving roller, connected to the driving roller, and adapted to drive the driving roller to rotate;

A pressing roller driving unit, connected with the pressing roller, is adapted to drive the pressing roller to press the pole piece material belt.

This embodiment provides a lamination device, including:

The unwinding device is arranged upstream of the high-speed slicing device, the unwinding device includes a positive electrode unwinding device or a negative electrode unwinding device, the positive electrode unwinding device is wound with a positive electrode material tape, and the negative electrode unwinding device is on the Winded with negative material tape;

And the above-mentioned high-speed slicing device, which is arranged downstream of the unwinding device, is used for cutting the positive electrode material tape to obtain a positive electrode sheet, or for cutting the negative electrode material tape to obtain a negative electrode sheet; when When the unwinding device is a negative electrode unwinding device, a diaphragm unwinding device is arranged downstream of the high-speed slicing device, and the diaphragm unwinding device is wound with a diaphragm material tape. The diaphragm unwinding device is respectively arranged on the upper and lower sides of the negative electrode material belt, and a thermal compounding unit is arranged downstream of the diaphragm unwinding device, and the thermal compounding unit is suitable for guiding the diaphragm material belt and for all the The diaphragm material strip and the negative electrode sheet are combined by hot pressing, and a cell cutting device is arranged downstream of the thermal compounding unit. sheet to form a negative electrode unit sheet;

A stacking device includes a first conveying device, a second conveying device and a stacking table, the first conveying device is used for conveying positive electrode sheets, the second conveying device is used for conveying negative electrode sheets, the negative electrode sheets and the The positive electrode sheets are alternately stacked on the stacking table to form battery cells;

Wherein, the dimension D1 of the diaphragm strip along the width direction is larger than the dimension D2 of the pole piece strip along the width direction, and the ratio of D1 to D2 is in the range of 1.01≤D1: D2≤1.08.

The technical scheme of the utility model has the following advantages:

1. The high-speed slicing device provided by the utility model, by setting the first cutting unit and the second cutting unit in turn along the conveying direction of the pole piece material belt, and the first cutting unit has a first cutting knife, the The second cutting unit has a second cutter, and the pole piece material belt is conveyed to the first cutting unit by the first conveying mechanism, and the pole piece material belt is conveyed to the first cutting unit by the second conveying mechanism. The second cutting unit cuts, so that the two cutting units can cut the pole piece material strip at the same time. Compared with the traditional single cutting knife, the number of pole pieces that can be obtained by a single cutting is increased. , thereby improving the slicing rate and improving work efficiency; and, the first conveying mechanism and the second conveying mechanism provide guidance for the conveying of the pole piece material belt, ensuring the transmission of the pole piece material belt. The stability and flatness of the pole piece can be improved, and the displacement or wrinkling of the pole piece material belt can be effectively avoided, thereby improving the quality of the pole piece after cutting, and ensuring the quality of the battery obtained after lamination.

2. The high-speed slicing device provided by the present utility model, by arranging the first knife seat to cooperate with the first cutting knife, and the second knife seat to cooperate with the second knife to realize the cutting of the pole piece material. The cutting of the strip can effectively avoid the situation that the pole piece material strip is not completely cut off, thereby ensuring the quality of cutting and improving work efficiency.

3. The high-speed slicing device provided by the present utility model, by setting the first conveying mechanism, the first driving roller and the first driven roller are arranged correspondingly up and down, and the second conveying mechanism includes the second driving roller correspondingly arranged up and down. With the second driven roller, through the cooperation of the driving roller and the driven roller, the pole piece material belt is clamped, thereby ensuring that the pole piece material belt has constant tension and the cutting accuracy.

4. The high-speed slicing device provided by the present invention drives the first drive roller and/or the second drive roller to rotate by setting a drive roller drive unit, and configures the driven roller drive unit to drive the first slave roller. The driving roller and/or the second driven roller presses the pole piece material belt, which improves the operability of the movement of the driving roller and the driven roller, and the start, stop and rotational speed of the driving roller can be adjusted as required, and The clamping degree of the cooperation between the driven roller and the driving roller can adjust the start, stop and speed of the movement of the pole piece material belt along the conveying direction according to the needs, and ensure the tension of the pole piece material belt. The degree of automation of the device.

5. The high-speed slicing device provided by the present utility model, by arranging the driving roller downstream of the second cutting unit, and the pressing roller matched with the driving roller, realizes the cutting of the cutting The pole piece material belt is clamped and provided with a driving force along the conveying direction, thereby ensuring the smooth conveyance of the cut pole piece material belt and avoiding the pole piece falling, which is beneficial to improving work efficiency.

6. The high-speed slicing device provided by the utility model, by setting the driving roller driving unit to drive the driving roller to rotate, and setting the pressing roller driving unit to drive the pressing roller to compress the pole piece material belt, the overall device is improved. The degree of operability and automation is beneficial to improve the processing efficiency.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the following descriptions The accompanying drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 is the structural representation of the high-speed slicing device of the present utility model;

Fig. 2 is the top view of the high-speed slicing device of the utility model;

Fig. 3 is the schematic diagram of A-A section in Fig. 2;

4 is a schematic structural diagram of the lamination equipment of the present invention;

5 is a front view of the lamination equipment of the present invention;

6 is a top view of the lamination equipment of the present invention;

FIG. 7 is a simplified diagram of the positive electrode sheet production mechanism of the present utility model;

8 is a simplified diagram of a positive electrode unit piece production mechanism of the present invention;

9 is a schematic structural diagram of a bag-type negative electrode unit sheet of the present invention;

FIG. 10 is a schematic structural diagram of a pole piece of the present invention.

Description of reference numbers:

1. High-speed slicing device; 101, base; 102, guide rail; 103, base plate; 104, driving roller; 105, pressing roller; 106, connecting shaft; 107, pressing roller drive unit; 108, first cutter drive unit; 109, the first cutter; 110, the first knife seat; 111, the first drive roller; 112, the first driven roller; 113, the first driven roller drive unit; 114, the second cutter drive unit; 115, 116, the second knife seat; 117, the second driving roller; 118, the second driven roller; 119, the second driven roller driving unit; 120, the pole piece material belt; 121, the first motor; 122, the second motor; 123, the driving unit of the driving roller; 2, the unwinding device; 21, the positive electrode unwinding device; 22, the negative electrode unwinding device; 23, the diaphragm unwinding device; Components; 33. Dust collection components; 34. Process correction components; 35. Tension roller components; 36. Buffer roller components; 37. Transition roller components; 41. Vacuum belt conveying unit; 42. Upside down belt conveying unit; 5. Pole piece 51. Positive electrode sheet; 52. Negative electrode unit sheet; 6. Diaphragm tape; 7. Thermal compound unit;

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, with a specific orientation. The orientation configuration and operation are therefore not to be construed as limitations of the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.

1-10, the high-speed slicing device provided in this embodiment includes:

a first cutting unit, having a first cutting knife 109, the first cutting knife 109 is adapted to move up and down in a vertical direction;

The second cutting unit is disposed downstream of the first cutting unit along the conveying direction of the pole piece material belt 120, and has a second cutting knife 115, and the second cutting knife 115 is adapted to move up and down in the vertical direction;

A first conveying mechanism, arranged upstream of the first cutting unit, provides guidance for the movement of the pole piece material belt 120, and is suitable for conveying the pole piece material belt 120 to the first cutting unit ;

A second conveying mechanism, disposed between the first cutting unit and the second cutting unit, is adapted to provide a guide for conveying the pole piece strip 120 cut by the first cutting unit.

It should be noted that the vertical direction refers to the "vertical direction" indicated by the arrow in Fig. 3; the upper and lower refer to the "up" and "down" indicated by the arrow in Fig. 3; The conveying direction of the pole piece material belt 120 refers to the “conveying direction” indicated by the arrow in FIG. 3; the upstream refers to the upstream along the “conveying direction” indicated by the arrow in FIG. It is downstream along the “conveying direction” indicated by the arrow in FIG. 3; the first conveying mechanism is located upstream of the first cutting unit, and is used to convey the uncut pole piece material belt 120 to the The first cutting unit provides guidance for the conveying of the pole piece material belt 120; the second conveying mechanism is arranged between the first cutting unit and the second cutting unit, on the one hand The pole piece material belt 120 can be conveyed to the second cutting unit before the first cutting, and on the other hand, is used for cutting the pole pieces cut by the first cutting unit during the cutting process. The sheet material belt is conveyed to the downstream. Since the pole piece material belt 120 is cut by the first cutting unit to obtain the pole piece 5 as shown in FIG. 10 , the size of the pole piece 5 is small, and the The second conveying mechanism provides guidance for the conveying of the pole pieces 5, which is beneficial to ensure the smooth transportation of the pole pieces 5 and avoid the situation that the pole pieces 5 fall; , which can greatly improve the slicing efficiency, and the efficiency can be increased by 60% to 90% compared with single-knife cutting; the distance between the first cutting knife 109 and the second cutting knife 115 along the conveying direction is exactly one pole piece width. size of.

As a variant, the high-speed slicing device can also be provided with a third cutting unit, which can cut three pole pieces 5 at the same time, and further, a fourth cutting unit can be set, which can cut four pole pieces 5 at the same time. , and so on, more cutting units can be set as needed, and the cutting efficiency can be increased by 60% in turn.

In the high-speed slicing device provided in this embodiment, a first cutting unit and a second cutting unit are sequentially arranged along the conveying direction of the pole piece material belt 120, and the first cutting unit has a first cutting knife 109, and the The second cutting unit has a second cutter 115, and the pole piece material belt 120 is transported by the first conveying mechanism to the first cutting unit and the second conveying mechanism. Cut to the second cutting unit, so that two cutting units can cut the pole piece material strip 120 at the same time. The number of pole pieces is increased, thereby increasing the slicing rate and improving work efficiency; and the first conveying mechanism and the second conveying mechanism provide guidance for the conveying of the pole piece material belt 120, ensuring that the pole piece material belt 120 is conveyed. The stability and flatness of the sheet material belt 120 can effectively prevent the pole piece material belt 120 from being displaced or wrinkled, thereby improving the quality of the pole pieces after cutting, and ensuring the quality of the battery obtained after lamination.

Specifically, the first cutting unit further includes a first knife seat 110, the first knife seat 110 is disposed below the first cutting knife 109, and is suitable for cooperating with the first cutting knife 109;

The second cutting unit further includes a second knife seat 116 . The second knife seat 116 is disposed below the second cutting knife 115 and is suitable for matching with the second cutting knife 115 .

It should be noted that the lower part refers to the direction of “down” indicated by the arrow in FIG. 3 ; the knife seat is located under the pole piece material belt 120 , and when the cutting knife falls, it is located at the bottom of the knife seat. With cooperation, the pole piece material strip 120 can be cut.

In the high-speed slicing device provided in this embodiment, the first knife seat 110 is arranged to cooperate with the first cutting knife 109, and the second knife seat 116 cooperates with the second cutting knife 115, so as to realize the cutting of the poles. The cutting of the sheet material tape 120 can effectively avoid the situation that the pole piece material tape 120 is not completely cut off, thereby ensuring the quality of cutting and improving work efficiency.

Specifically, the first conveying mechanism includes: a first driving roller 111 and a first driven roller 112, the first driving roller 111 is arranged below the pole piece material belt 120, and the first driven roller 112 is arranged Above the pole piece material belt 120, the first driving roller 111 is suitable for providing a driving force for conveying the pole piece material belt 120, and the first driven roller 112 is suitable for cooperating with the first driving force The roller 111 cooperates to clamp the pole piece material strip 120;

The second conveying mechanism includes: a second driving roller 117 and a second driven roller 118, the second driving roller 117 is arranged below the pole piece material belt 120, and the second driven roller 118 is arranged on the pole piece Above the material belt 120, the second driving roller 117 is adapted to provide a driving force for conveying the pole piece material belt 120, and the second driven roller 118 is adapted to cooperate with the second driving roller 117 to clamp The pole piece material strip 120 .

It should be noted that the tension of the pole piece material belt 120 after cutting is poor, and the pole piece material belt can be held by clamping the pole piece material belt by the first conveying mechanism and the second conveying mechanism. The tension of 120 is constant, so as to ensure the precision of cutting.

In the high-speed slicing device provided in this embodiment, the first conveying mechanism includes a first driving roller 111 and a first driven roller 112 arranged correspondingly up and down, and the second conveying mechanism includes a second driving roller arranged correspondingly up and down 117 and the second driven roller 118, through the cooperation of the driving roller and the driven roller, realize the clamping of the pole piece material belt 120, so as to ensure that the pole piece material belt 120 has a constant tension and ensure the accuracy of cutting .

Specifically, the high-speed slicing device further includes: a driving roller driving unit adapted to drive the first driving roller 111 and/or the second driving roller 117 to rotate.

Optionally, the driving roller driving unit is a motor.

Optionally, the driving roller driving unit includes a first motor 121 and a second motor 122, the first motor 121 is adapted to drive the first driving roller 111 to rotate, and the second motor 122 is adapted to drive the The second drive roller 117 rotates.

Specifically, the high-speed slicing device further includes: a driven roller driving unit, adapted to drive the first driven roller 112 and/or the second driven roller 118 to compress the pole piece material belt 120 .

Optionally, the driven roller driving unit is a motor or a driving cylinder.

Further optionally, the motor is a linear motor.

Optionally, the driven roller driving unit includes a first driven roller driving unit 113 and a second driven roller driving unit 119, and the first driven roller driving unit 113 is adapted to drive the first driven roller 112 moves in the up and down direction, the second driven roller driving unit 119 is adapted to drive the second driven roller 118 to move in the up and down direction, when the first driven roller driving unit 113 drives the first driven roller 113 When the roller 112 moves downward, the first driven roller 112 presses the pole piece material belt 120 downward, and is adapted to cooperate with the first driving roller 111 to clamp the pole piece material belt 120. When the second driven roller driving unit 119 moves downward, the second driven roller driving unit 119 presses the pole piece material belt 120 downward, and is adapted to cooperate with the second driving roller 117 to clamp Tighten the pole piece material belt 120, and at the same time, the pole piece material belt 120 moves along the conveying direction under the driving of the first driving roller 111 and the second driving roller 117, so as to realize the The clamping and conveying of the sheet material belt 120 can prevent the pole piece material belt 120 from being wrinkled or displaced, thereby improving the processing accuracy.

In the high-speed slicing device provided in this embodiment, the first driving roller 111 and/or the second driving roller 117 are driven to rotate by setting a driving roller driving unit, and the driven roller driving unit is arranged to drive the first slave roller. The driving roller 112 and/or the second driven roller 118 presses the pole piece material belt 120, which improves the operability of the movement of the driving roller and the driven roller, and the start and stop of the driving roller can be adjusted as required. rotation speed, and the degree of clamping between the driven roller and the driving roller, so as to adjust the start, stop and speed of the pole piece material belt 120 along the conveying direction as required, and ensure that the pole piece material belt 120 The tension increases the degree of automation of the device.

Specifically, the first cutting unit further includes: a first cutting knife driving unit 108, which is connected to the first cutting knife 109 and is adapted to drive the first cutting knife 109 to move up and down;

The second cutting unit further includes: a second cutter driving unit 114, which is connected to the second cutter 115 and is adapted to drive the second cutter 115 to move up and down.

It should be noted that the “up and down” refers to “up” and “down” indicated by the arrows in FIG. 3 , and the cutter driving unit drives the cutter to move downward, so as to cut the pole piece material strip 120 . The unit drives the cutter to move downward, the cutter is lifted, and the pole piece material belt 120 moves toward the conveying direction. By arranging the cutter driving unit to drive the cutter to move, the degree of automation is improved, and the processing efficiency is improved.

Optionally, the first cutter driving unit 108 and/or the second cutter driving unit 114 are motors or driving cylinders.

Specifically, the high-speed slicing device further includes: a driving roller 104 disposed downstream of the second cutting unit, adapted to provide the pole piece material belt 120 with a driving force along the conveying direction.

It should be noted that the pole piece is formed by the cut pole piece material tape 120, and the pole piece formed after cutting is easy to fall if it lacks a support, and the driving roller 104 is arranged on the second The downstream of the cutting unit can not only support the pole pieces formed by the pole piece material belt 120 after cutting, but also provide a driving force for the movement of the pole pieces, so as to transport the pole pieces out of the high-speed slice. device.

Specifically, the high-speed slicing device further includes: a pressing roller 105 disposed opposite the driving roller 104 and adapted to cooperate with the driving roller 104 to clamp the pole piece material belt 120 .

In the high-speed slicing device provided in this embodiment, by arranging the driving roller 104 downstream of the second cutting unit, and the pressing roller 105 matched with the driving roller 104, the cutting of the Clamping the pole piece material belt 120 and providing it with a driving force along the conveying direction, from ensuring the smooth transportation of the cut pole piece material belt, avoiding the pole piece falling, and helping to improve work efficiency .

Specifically, the high-speed slicing device further includes: a driving roller driving unit 123, which is connected to the driving roller 104 and is suitable for driving the driving roller 104 to rotate;

The pressing roller driving unit 107 , connected to the pressing roller 105 , is adapted to drive the pressing roller 105 to press the pole piece material belt 120 .

Optionally, the driving roller driving unit 123 is a motor.

Optionally, the pressing roller driving unit 107 is a motor or an air cylinder.

Optionally, the pressing roller 105 is connected to the pressing roller driving unit 107 through a connecting shaft 106 .

In the high-speed slicing device provided in this embodiment, the driving roller driving unit 123 is provided to drive the driving roller 104 to rotate, and the pressing roller driving unit 107 is arranged to drive the pressing roller 105 to press the pole piece material belt 120, so as to improve the The operability and automation degree of the whole device are improved, which is beneficial to improve the processing efficiency.

Optionally, the high-speed slicing device further includes a base 101 , the first cutting unit, the second cutting unit, and the first conveying mechanism and the second conveying mechanism are connected to the base plate 103 through the base plate 103 . The base 101 is connected.

Optionally, a guide rail 102 is provided between the base plate 103 and the base 101 , and the guide rail 102 is suitable for providing guidance for the movement of the base plate 103 .

The working steps of the high-speed slicing device provided in this embodiment are described in detail below:

First, the first driving roller 111 is driven by the first motor 121 to rotate, and the first driven roller 112 is driven by the first driven roller driving unit 113 to rotate the pole piece web 120, so that the pole piece material belt 120 moves along the conveying direction under the action of the first driving roller 111 and the first driven roller 112, and after passing through the first cutting unit, enters the The second conveying mechanism, the second motor 122 drives the second driving roller 117 to rotate, the second driven roller driving unit 119 drives the conveying second driven roller 118 to move downward to compress the pole piece material Then, the pole piece material belt 120 is conveyed to the second cutting unit, and then the pole piece material belt 120 continues to move along the conveying direction, passing through the driving roller 104 and the pressing roller 105, at this time, the pole piece material belt 120 is passed through the high-speed slicing device;

Then, the first cutter driving unit 108 drives the first cutter 109 to move downward, and at the same time, the second cutter driving unit 114 drives the second cutter 115 to move downward, and the two cutters At the same time, it falls to the surface of the cutter base to cut the pole piece material strip 120;

Subsequently, the first cutter driving unit 108 drives the first cutter 109 to move upward, the second cutter driving unit 114 drives the second cutter 115 to move upward, lifts the cutter, and the The first conveying mechanism and the second conveying mechanism continue to convey the pole piece material belt 120 along the conveying direction, and at the same time, the driving roller 104 cooperates with the pressing roller 105 to convey the cut pole piece material belt out the high-speed cutting device;

The above steps are repeated to perform the next cutting on the pole piece material strip 120 .

It should be noted that the moving speed of the cutting knife and the conveying speed of the pole piece material belt 120 by the conveying unit are calculated and set in advance. The conveying direction moves, and then when the cutter cuts the pole piece material belt 120 again, the pole piece material belt 120 just moves a distance of the width of a pole piece, so as to realize the processing of a stack that conforms to the The pole piece of the required size; the high-speed slicing device provided in this embodiment is not only suitable for cutting common battery pole piece sizes, but also suitable for cutting short blade battery pole pieces. Optionally, the length of the pole piece 5 Preferably, the high-speed slicing device is suitable for cutting pole pieces with a width of 120 mm, which can better ensure the precision and speed of pole piece feeding.

Embodiment 2

1-10, this embodiment provides a lamination device, including:

The unwinding device 2 is arranged upstream of the high-speed slicing device 1. The unwinding device 2 includes a positive electrode unwinding device 21 or a negative electrode unwinding device 22. The positive electrode unwinding device 21 is wound with a positive electrode material tape, so the A negative electrode material tape is wound on the negative electrode unwinding device 22;

And the high-speed slicing device 1 as described above, arranged downstream of the unwinding device 2, is used for cutting the positive electrode material strip to obtain the positive electrode sheet 51, or for cutting the negative electrode material strip to obtain the negative electrode material. When the unwinding device 2 is a negative electrode unwinding device 22, a diaphragm unwinding device 23 is provided downstream of the high-speed slicing device 1, and the diaphragm unwinding device 23 is wound with a diaphragm material tape 6, and the diaphragm There are two unwinding devices 23. The two diaphragm unwinding devices 23 are respectively arranged on the upper and lower sides of the negative electrode material belt. The thermal compounding unit 7 is provided downstream of the diaphragm unwinding device 23. The thermal compounding unit 7 It is suitable for guiding the diaphragm material strip 6, and performing hot pressing and compounding on the diaphragm material belt 6 and the negative electrode sheet. The cutting device 8 is used for cutting the separator material strip 6 and the negative electrode sheet after hot pressing and compounding to form the negative electrode unit sheet 52;

A stacking device includes a first conveying device, a second conveying device and a stacking table, the first conveying device is used for conveying positive electrode sheets, the second conveying device is used for conveying negative electrode sheets, the negative electrode sheets and the The positive electrode sheets are alternately stacked on the stacking table to form battery cells;

Wherein, the dimension D1 of the diaphragm strip along the width direction is larger than the dimension D2 of the pole piece strip 120 along the width direction, and the ratio of D1 to D2 is in the range of 1.01≤D1: D2≤1.08.

It should be noted that the upper and lower sides of the negative electrode material strip refer to the two sides along the “up and down” directions indicated by the arrows in FIG. 8 ; during the operation of the lamination device, the unwinding device 2. The material tape wound on the top is released from the unwinding device under the drive of the driving device, wherein the material tape refers to the positive electrode material belt or the negative electrode material belt or the diaphragm material belt; the high-speed slice provided by the first embodiment The pole piece made by the device 1 is an unmade bag pole piece; the diaphragm material tape is cut to form a single-piece diaphragm, and the ratio of the width of the diaphragm to the width of the pole piece is 1.01-1.08 to ensure that the diaphragm The pole pieces can be completely wrapped, wherein the width direction refers to along the "width direction" indicated by the arrow in FIG. 10 .

At least one of the positive electrode sheet conveyed by the first conveying device and the negative electrode sheet conveyed by the second conveying device is produced by the high-speed slicing device 1 provided in Example 1. As an embodiment, the The lamination equipment is provided with two high-speed slicing devices 1, and the two high-speed slicing devices 1 work at the same time, and are respectively used to make positive electrode sheets and negative electrode sheets. The first conveying device and the second conveying device are at the same time. In operation, the first transport device transports the positive electrode sheet, and the second transport device transports the negative electrode unit sheet 52; Only one kind of pole piece in the negative electrode piece is made by the high-speed slicing device 1 provided in the first embodiment, and the other kind of pole piece is made at the same time or in advance by another slicing equipment, and then is made by the other slicing equipment. The first conveying device conveys the positive electrode sheet, and the second conveying device conveys the negative electrode unit sheet 52 .

Optionally, the first conveying device and the second conveying device convey the pole pieces by means of suction.

Optionally, the lamination device further includes a detection device and a deviation correction unit, the detection device is used for detecting the alignment state of the positive electrode sheet and the negative electrode unit sheet, and the deviation correction unit is used for aligning the positive electrode sheet with the negative electrode unit sheet. The negative electrode units are aligned.

Optionally, the lamination device further includes: a guide device, which is arranged between the unwinding device 2 and the high-speed slicing device 1 and is suitable for the pole piece material unwinding from the unwinding device 2 The belt 120 provides guidance and is transported into the high-speed slicing device 1 .

Optionally, the lamination device further includes: a belt conveying device, which is arranged between the high-speed slicing device 1 and the lamination device, and is suitable for conveying the pole pieces cut by the high-speed slicing device 1 to the lamination device.

Optionally, the belt conveying device includes a vacuum belt conveying unit 41 and an upside-down belt conveying unit 42 . Wherein, the vacuum belt conveying unit 41 is provided with a vacuum pump, so that the vacuum belt conveying unit 41 is in a negative pressure state, so that the pole piece 5 is adsorbed on the conveying belt, and the pole piece 5 is prevented from being conveyed during the conveying process. At the inverted belt conveyor unit 42, the pole piece is located below the conveyor belt, and the pole piece 5 is adsorbed on the conveyor belt to realize the rejection of waste.

Optionally, before the pole piece material belt 120 enters the high-speed slicing device 1, the lamination device is further provided with a detection mechanism for detecting whether the pole ears of the pole piece material belt 120 are in order, so as to ensure the The accuracy of the position of the pole piece material belt 120 ensures the subsequent cutting accuracy.

Optionally, the pole piece material belt 120 is a positive electrode piece material belt or a negative electrode piece material belt or a separator material belt; the pole piece 5 is a positive electrode piece or a negative electrode piece.

As shown in FIG. 7 , the positive electrode unwinding device 21 discharges the positive electrode material strip, and the positive electrode material strip is cut by the high-speed slicing device 1 to form a positive electrode sheet 51 ; as shown in FIG. 8 , the negative electrode unwinding device 22 discharges the negative electrode material. Belt, the negative electrode material belt is cut by the high-speed slicing device 1 to form a negative electrode sheet, and then, the diaphragm unwinding device 23 releases the diaphragm material belt 6, and the upper and lower sides of the negative electrode material belt have a layer of the diaphragm material. After the thermal recombination of the thermal recombination unit 7, the separator material tape is attached to the negative electrode sheet, and then cut by the cell cutting device 8 to form the negative electrode unit piece 52 (bag-type pole piece). Wherein, the upper and lower refer to the “upper” and “lower” indicated by the arrows in FIG. 8 ; the negative electrode unit sheet includes a negative electrode sheet and an upper and lower diaphragm wrapping the negative electrode sheet; the negative electrode unit sheet Stacked with the positive electrode sheet in sequence to form a bag-type electrode group, and then a battery cell is formed.

The working steps of the lamination equipment are described in detail below:

First, the unwinding device 2 unwinds the pole piece material tape 120 , the pole piece material tape enters the guide device, and passes through the roller assembly 31 , the belt splicing assembly 32 , the dust suction part 33 , and the process deviation correction assembly 34 in sequence. After the guide of the tension roller assembly 35, the buffer roller assembly 36, and the transition roller assembly 37, they enter the high-speed slicing device 1 for cutting, and then, the cut pole pieces 5 are delivered from the high-speed slicing device 1. The pole pieces are then transported to a lamination device via the belt conveying device for lamination. Wherein, among the belt splicing assembly 32 , the dust suction part 33 , the process deviation correction assembly 34 , the tension roller assembly 35 and the buffer roller assembly 36 , a plurality of the passing roller assemblies 31 are arranged according to the position requirements, so as to realize the pole piece. Redirected conveyance of the web 120 .

Specifically, the negative electrode unwinding device 22 is used to provide a negative electrode material tape, the positive electrode unwinding device 21 is used to provide a positive electrode material tape, and the negative electrode material tape is cut by the high-speed slicing device 1 to form a single negative electrode sheet. A diaphragm unwinding device 23 is arranged on both sides of the sheet, and the single negative electrode sheet is covered on both sides by the diaphragm material strips provided by the two diaphragm unwinding devices 23, and then is rolled into one through the thermal compounding unit 7. It becomes a continuous negative electrode unit piece. The continuous negative electrode unit piece is cut by the unit piece cutting device 8 to form a negative electrode unit piece 52. At the same time, the positive electrode material tape is cut to form a single positive electrode piece 51. The first conveying device simultaneously Pick up multiple negative electrode units, the second conveying device simultaneously picks up the same number of positive electrode units (UVW platform is used to rectify the pole pieces and align the pole pieces), and the stacking device places the same number of negative electrode units on the stacking table. The sheet 52 is stacked with the positive electrode sheet 51 to form a battery cell, wherein the negative electrode unit sheet 52 and the positive electrode sheet 51 are alternately stacked with each other. Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (10)

1. A high-speed slicing apparatus, comprising:

a first cutting unit having a first cutter (109), the first cutter (109) being adapted to move up and down in a vertical direction;

the second cutting unit is arranged at the downstream of the first cutting unit along the conveying direction of the pole piece material belt (120) and is provided with a second cutter (115), and the second cutter (115) is suitable for moving up and down along the vertical direction;

the first conveying mechanism is arranged at the upstream of the first cutting unit, provides guidance for the movement of the pole piece material belt (120), and is suitable for conveying the pole piece material belt (120) into the first cutting unit;

and the second conveying mechanism is arranged between the first cutting unit and the second cutting unit and is suitable for providing guidance for conveying the pole piece material strap (120) cut by the first cutting unit.

2. The high-speed slicing device of claim 1, wherein the first cutting unit further comprises a first knife seat (110), the first knife seat (110) being disposed below the first cutting knife (109) and adapted to cooperate with the first cutting knife (109);

the second cutting unit further comprises a second cutter holder (116), and the second cutter holder (116) is arranged below the second cutter (115) and is suitable for being matched with the second cutter (115).

3. The high-speed slicing apparatus according to claim 1, wherein the first conveying mechanism comprises: the feeding device comprises a first driving roller (111) and a first driven roller (112), wherein the first driving roller (111) is arranged below a pole piece material belt (120), the first driven roller (112) is arranged above the pole piece material belt (120), the first driving roller (111) is suitable for providing driving force for conveying the pole piece material belt (120), and the first driven roller (112) is suitable for being matched with the first driving roller (111) to clamp the pole piece material belt (120);

the second conveying mechanism includes: the pole piece material belt conveying device comprises a second driving roller (117) and a second driven roller (118), wherein the second driving roller (117) is arranged below a pole piece material belt (120), the second driven roller (118) is arranged above the pole piece material belt (120), the second driving roller (117) is suitable for providing driving force for conveying of the pole piece material belt (120), and the second driven roller (118) is suitable for being matched with the second driving roller (117) to clamp the pole piece material belt (120).

4. The high-speed slicing apparatus of claim 3, further comprising: a driving roller driving unit, which is suitable for driving the first driving roller (111) and/or the second driving roller (117) to rotate.

5. The high-speed slicing apparatus of claim 3, further comprising: a driven roller driving unit adapted to drive the first driven roller (112) and/or the second driven roller (118) to compress the pole piece tape (120).

6. The high-speed slicing apparatus according to claim 1, wherein the first cutting unit further comprises: the first cutter driving unit (108) is connected with the first cutter (109) and is suitable for driving the first cutter (109) to move up and down;

the second cutting unit further includes: and the second cutter driving unit (114) is connected with the second cutter (115) and is suitable for driving the second cutter (115) to move up and down.

7. The high-speed slicing apparatus as set forth in any one of claims 1 to 6, further comprising: and the driving roller (104) is arranged at the downstream of the second cutting unit and is suitable for providing driving force along the conveying direction for the pole piece material belt (120).

8. The high-speed slicing apparatus of claim 7, further comprising: and the pressing roller (105) is arranged opposite to the driving roller (104) and is suitable for being matched with the driving roller (104) to clamp the pole piece material belt (120).

9. The high-speed slicing apparatus of claim 8, further comprising: the driving roller driving unit (123) is connected with the driving roller (104) and is suitable for driving the driving roller (104) to rotate;

and the compression roller driving unit (107) is connected with the compression roller (105) and is suitable for driving the compression roller (105) to compress the pole piece material belt (120).

10. A lamination apparatus, comprising:

the unwinding device (2) is arranged at the upstream of the high-speed slicing device (1), the unwinding device (2) comprises a positive pole unwinding device (21) or a negative pole unwinding device (22), a positive pole material belt is wound on the positive pole unwinding device (21), and a negative pole material belt is wound on the negative pole unwinding device (22);

and a high-speed slicing apparatus (1) as claimed in any one of claims 1 to 9, disposed downstream of said unwinding means (2), for cutting a strip of positive electrode material to produce positive electrode sheets (51), or for cutting a strip of negative electrode material to produce negative electrode sheets; when the unreeling device (2) is a cathode unreeling device (22), a diaphragm unreeling device (23) is arranged at the downstream of the high-speed slicing device (1), the membrane unreeling devices (23) are wound with membrane material belts (6), the number of the membrane unreeling devices (23) is two, the two membrane unreeling devices (23) are respectively arranged on the upper side and the lower side of the cathode material belt, a thermal compounding unit (7) is arranged at the downstream of the membrane unreeling device (23), the thermal compounding unit (7) is adapted to guide the strip of membrane material (6), and the diaphragm material belt (6) and the negative plate are subjected to hot-press compounding, a unit piece cutting device (8) is arranged at the downstream of the thermal compounding unit (7), the unit piece cutting device (8) is used for cutting the diaphragm material belt (6) and the negative plate which are subjected to hot-pressing compounding to form a negative unit piece (52);

the stacking device comprises a first carrying device, a second carrying device and a stacking table, wherein the first carrying device is used for carrying positive plates, the second carrying device is used for carrying negative electrode unit pieces (52), and the negative electrode unit pieces (52) and the positive plates are sequentially and alternately stacked on the stacking table to form single batteries;

the dimension D1 of the membrane material belt in the width direction is larger than the dimension D2 of the pole piece material belt (120) in the width direction, and the ratio range of D1 to D2 is 1.01-1: d2 is less than or equal to 1.08.

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