CN216966414U - 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

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 lamination equipment.

Background

With the rapid development of the lithium battery industry, the production requirement on the lithium battery is higher and higher, at present, the square cutting and stacking integrated technology is one of the most advanced lithium ion battery manufacturing technologies, wherein the slicing process is an important process before pole pieces are stacked, a pole piece material belt is cut into a single pole piece for assembling the battery through a slicing device in a lithium ion battery production line, and therefore the slicing efficiency of the slicing device directly influences the overall production rate of the battery, however, the slicing rate of the current slicing device reaches the bottleneck and is difficult to continue to improve, so that the lamination efficiency is limited, the battery production efficiency of the whole production line is influenced, the improvement of the working efficiency is not facilitated, and the production cost is reduced.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the present invention is to overcome the defect of low slicing rate of the slicing device in the prior art, so as to provide a high-speed slicing device and a laminating apparatus capable of increasing the slicing rate.

In order to solve the above technical problem, the present invention provides a high-speed slicing apparatus, comprising:

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.

Optionally, the first cutting unit further comprises a first cutter holder, and the first cutter holder is arranged below the first cutter and is suitable for being matched with the first cutter;

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

Optionally, the first conveying mechanism includes: the first driving roller is arranged below the pole piece material belt, the first driven roller is arranged above the pole piece material belt, the first driving roller is suitable for providing driving force for conveying the pole piece material belt, and the first driven roller is suitable for being matched with the first driving roller to clamp the pole piece material belt;

the second conveying mechanism includes: second drive roller and second driven roller, second drive roller set up in the below in pole piece material area, the second driven roller set up in the top in pole piece material area, the second drive roller be suitable for the transport in pole piece material area provides drive power, the second driven roller be suitable for with the cooperation of second drive roller is pressed from both sides tightly the pole piece material area.

Optionally, the high-speed slicing apparatus further includes: and the driving roller driving unit is suitable for driving the first driving roller and/or the second driving roller to rotate.

Optionally, the high-speed slicing apparatus further includes: and the driven roller driving unit is suitable for driving the first driven roller and/or the second driven roller to press the pole piece material belt.

Optionally, the first cutting unit further includes: the first cutter driving unit is connected with the first cutter and is suitable for driving the first cutter to move up and down;

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

Optionally, the high-speed slicing apparatus further includes: and the driving roller 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.

Optionally, the high-speed slicing apparatus further includes: and the compression roller is arranged opposite to the driving roller and is suitable for being matched with the driving roller to clamp the pole piece material belt.

Optionally, the high-speed slicing apparatus further includes: the driving roller driving unit is connected with the driving roller and is suitable for driving the driving roller to rotate;

and the compression roller driving unit is connected with the compression roller and is suitable for driving the compression roller to compress the pole piece material belt.

The present embodiments provide a lamination apparatus comprising:

the unwinding device is arranged at the upstream of the high-speed slicing device and comprises a positive electrode unwinding device or a negative electrode unwinding device, a positive electrode material belt is wound on the positive electrode unwinding device, and a negative electrode material belt is wound on the negative electrode unwinding device;

the high-speed slicing device is arranged at the downstream of the unreeling device and is used for cutting the positive material belt to obtain a positive plate or cutting the negative material belt to obtain a negative plate; when the unwinding device is a negative electrode unwinding device, a diaphragm unwinding device is arranged at the downstream of the high-speed slicing device, a diaphragm material belt is wound on the diaphragm unwinding device, the number of the diaphragm unwinding devices is two, the two diaphragm unwinding devices are respectively arranged at the upper side and the lower side of the negative electrode material belt, a thermal compounding unit is arranged at the downstream of the diaphragm unwinding device, the thermal compounding unit is suitable for guiding the diaphragm material belt and performing thermal pressing compounding on the diaphragm material belt and the negative electrode sheet, a unit piece cutting device is arranged at the downstream of the thermal compounding unit, and the unit piece cutting device is used for cutting the diaphragm material belt and the negative electrode sheet after the thermal pressing compounding so as to form a negative electrode unit piece;

the lamination device comprises a first carrying device, a second carrying device and a lamination table, wherein the first carrying device is used for carrying a positive plate, the second carrying device is used for carrying a negative plate, and the negative plate and the positive plate are sequentially and alternately stacked on the lamination table to form a battery monomer;

the dimension D1 of the membrane material belt in the width direction is larger than the dimension D2 of the pole piece material belt in the width direction, and the ratio range of D1 to D2 is not less than 1.01 and not more than D1: d2 is less than or equal to 1.08.

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

1. according to the high-speed slicing device provided by the utility model, the first cutting unit and the second cutting unit are sequentially arranged along the conveying direction of the pole piece material belt, the first cutting unit is provided with the first cutter, the second cutting unit is provided with the second cutter, 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 second cutting unit by the second conveying mechanism for cutting, so that the two cutting units can simultaneously cut the pole piece material belt, compared with the traditional single cutter, the number of pole pieces obtained by single cutting is increased, the slicing speed is increased, and the working efficiency is improved; and, first conveying mechanism with second conveying mechanism does the transport in pole piece material area provides the direction, has guaranteed the stability and the flattening nature of pole piece material area conveying effectively avoid the pole piece material area takes place displacement or fold to improve the quality of the pole piece after cutting, guaranteed the quality of the battery that obtains behind the lamination.

2. According to the high-speed slicing device provided by the utility model, the first cutter holder is matched with the first cutter, and the second cutter holder is matched with the second cutter, so that the pole piece material belt is cut, the situation that the pole piece material belt is not completely cut off is effectively avoided, the cutting quality is ensured, and the working efficiency is favorably improved.

3. According to the high-speed slicing device, the first conveying mechanism comprises the first driving roller and the first driven roller which are arranged correspondingly up and down, the second conveying mechanism comprises the second driving roller and the second driven roller which are arranged correspondingly up and down, and the pole piece material belt is clamped through the matching of the driving roller and the driven roller, so that the pole piece material belt is guaranteed to have constant tension, and the cutting precision is guaranteed.

4. According to the high-speed slicing device provided by the utility model, the driving roller driving unit is arranged to drive the first driving roller and/or the second driving roller to rotate, and the driven roller driving unit is arranged to drive the first driven roller and/or the second driven roller to press the pole piece material belt tightly, so that the operability of the movement of the driving roller and the driven roller is improved, the starting, stopping and rotating speed of the driving roller can be adjusted as required, and the clamping degree of the driven roller and the driving roller in matching is improved, therefore, the starting, stopping and the speed of the movement of the pole piece material belt along the conveying direction can be adjusted as required, the tension of the pole piece material belt is ensured, and the automation degree of the device is improved.

5. According to the high-speed slicing device provided by the utility model, the driving roller and the compression roller matched with the driving roller are arranged at the downstream of the second cutting unit, so that the cut pole piece material belt is clamped, a driving force along the conveying direction is provided for the pole piece material belt, the smooth conveying of the cut pole piece material belt is ensured, the pole piece is prevented from falling, and the working efficiency is improved.

6. According to the high-speed slicing device provided by the utility model, the driving roller driving unit is arranged to drive the driving roller to rotate, and the compression roller driving unit is arranged to drive the compression roller to compress the pole piece material belt, so that the operability and the automation degree of the whole device are improved, and the processing efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a high-speed slicing apparatus according to the present invention;

FIG. 2 is a top view of the high speed slicing apparatus of the present invention;

FIG. 3 is a schematic view of section A-A of FIG. 2;

FIG. 4 is a schematic structural view of the lamination apparatus of the present invention;

FIG. 5 is a front view of the lamination apparatus of the present invention;

FIG. 6 is a top plan view of the lamination apparatus of the present invention;

FIG. 7 is a simplified diagram of a positive plate making mechanism according to the present invention;

FIG. 8 is a simplified diagram of a positive die sheet-making mechanism of the present invention;

fig. 9 is a schematic structural view of a pouch type negative electrode cell of the present invention;

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

Description of reference numerals:

1. a high-speed slicing device; 101. a base; 102. a guide rail; 103. a base plate; 104. a drive roll; 105. a compression roller; 106. a connecting shaft; 107. a press roller driving unit; 108. a first cutter driving unit; 109. a first cutter; 110. a first tool apron; 111. a first driving roller; 112. a first driven roller; 113. a first driven roller driving unit; 114. a second cutter driving unit; 115. a second cutter; 116. a second tool apron; 117. a second driving roller; 118. a second driven roller; 119. a second driven roller driving unit; 120. pole piece material belt; 121. a first motor; 122. a second motor; 123. a drive roller drive unit; 2. an unwinding device; 21. a positive pole unreeling device; 22. a negative pole unreeling device; 23. a membrane unwinding device; 31. passing through a roller assembly; 32. a belt splicing component; 33. a dust suction part; 34. a process deviation rectifying component; 35. a tension roller assembly; 36. buffering the roller assembly; 37. a transition roll assembly; 41. a vacuum belt conveying unit; 42. an inverted belt conveying unit; 5. pole pieces; 51. a positive plate; 52. a negative electrode cell; 6. a membrane material belt; 7. a thermal compounding unit; 8. a die cutting device.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 to 10, the high-speed slicing apparatus provided in this embodiment includes:

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.

It should be noted that the vertical direction refers to a "vertical direction" indicated by an arrow in fig. 3; the up and down refer to "up" and "down" indicated by arrows in fig. 3; the conveying direction of the pole piece material belt 120 refers to a "conveying direction" indicated by an arrow in fig. 3; the upstream refers to an upstream in a "conveying direction" indicated by an arrow in fig. 3; the downstream refers to downstream in the "conveying direction" indicated by an arrow in fig. 3; the first conveying mechanism is positioned at the upstream of the first cutting unit and is used for conveying the uncut pole piece material belt 120 to the first cutting unit to provide guidance for conveying the pole piece material belt 120; the second conveying mechanism is arranged between the first cutting unit and the second cutting unit, on one hand, the pole piece material belt 120 can be conveyed to the second cutting unit before first cutting, on the other hand, the second conveying mechanism is used for conveying the pole piece material belt cut by the first cutting unit to the downstream in the cutting process, as the pole piece 5 shown in fig. 10 is obtained after the pole piece material belt 120 is cut by the first cutting unit, the size of the pole piece 5 is smaller, the second conveying mechanism is arranged to provide guide for conveying the pole piece 5, so that smooth conveying of the pole piece 5 is ensured, and the situation that the pole piece 5 falls off is avoided; by adopting double-knife cutting and simultaneously manufacturing two pole pieces 5, the slicing efficiency can be greatly improved, and the efficiency can be improved by 60-90% compared with that of single-knife cutting; the distance between the first cutter 109 and the second cutter 115 in the conveying direction is exactly the size of one pole piece width.

As a variation, the high-speed slicing device may further include a third cutting unit, which may cut three pole pieces 5 simultaneously, and further, may further include a fourth cutting unit, which may cut four pole pieces 5 simultaneously, so that more cutting units may be provided as needed, and the cutting efficiency may be increased by 60% in sequence.

In the high-speed slicing device provided by this embodiment, the first cutting unit and the second cutting unit are sequentially arranged along the conveying direction of the pole piece material strap 120, the first cutting unit is provided with the first cutter 109, the second cutting unit is provided with the second cutter 115, the pole piece material strap is conveyed to the first cutting unit by the first conveying mechanism, and the pole piece material strap 120 is conveyed to the second cutting unit by the second conveying mechanism for cutting, so that the two cutting units simultaneously cut the pole piece material strap 120; and, first conveying mechanism with second conveying mechanism does pole piece material area 120's transport provides the direction, has guaranteed the stability and the flattening nature of pole piece material area 120 conveying effectively avoid pole piece material area 120 takes place displacement or fold to improve the quality of the pole piece after cutting, guaranteed the quality of the battery that obtains behind the lamination.

Specifically, the first cutting unit further comprises a first cutter holder 110, and the first cutter holder 110 is disposed below the first cutter 109 and is adapted to cooperate with the first cutter 109;

the second cutting unit further comprises a second cutter holder 116, and the second cutter holder 116 is disposed below the second cutter 115 and is adapted to cooperate with the second cutter 115.

It should be noted that the lower direction refers to the direction of the arrow "lower" in fig. 3; the blade holder is located the below in pole piece material area 120, when the cutter falls down, lie in under the cooperation of blade holder, the realization will pole piece material area 120 is decided.

The high-speed slicing device provided by the embodiment is characterized in that the first blade holder 110 is matched with the first cutter 109, the second blade holder 116 is matched with the second cutter 115, so that the cutting of the pole piece material belt 120 is realized, the occurrence of the situation that the pole piece material belt 120 is not completely cut off is effectively avoided, the cutting quality is ensured, and the improvement of the working efficiency is facilitated.

Specifically, the first conveying mechanism includes: the first driving roller 111 and the first driven roller 112, the first driving roller 111 is disposed below the pole piece material belt 120, the first driven roller 112 is disposed above the pole piece material belt 120, the first driving roller 111 is adapted to provide a driving force for conveying the pole piece material belt 120, and the first driven roller 112 is adapted to cooperate with the first driving roller 111 to clamp the pole piece material belt 120;

the second conveying mechanism includes: the second driving roller 117 and the second driven roller 118, the second driving roller 117 is disposed below the pole piece material tape 120, the second driven roller 118 is disposed above the pole piece material tape 120, the second driving roller 117 is suitable for providing a driving force for conveying the pole piece material tape 120, and the second driven roller 118 is suitable for being matched with the second driving roller 117 to clamp the pole piece material tape 120.

It should be noted that, the tension of the cut pole piece material strap 120 is poor, and the tension of the pole piece material strap 120 can be kept constant by clamping the pole piece material strap through the first conveying mechanism and the second conveying mechanism, so that the cutting precision is ensured.

The high-speed section device that this embodiment provided, through setting up first conveying mechanism includes the first drive roller 111 and the first driven roller 112 that correspond the setting from top to bottom, second conveying mechanism includes the second drive roller 117 and the second driven roller 118 that correspond the setting from top to bottom, and through the cooperation of drive roller and driven roller, it is right to realize the clamp of pole piece material area 120, thereby guarantee pole piece material area 120 has invariable tension, guarantees the precision of deciding.

Specifically, the high-speed slicing apparatus further includes: and 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 second driving roller 117 to rotate.

Specifically, the high-speed slicing apparatus further comprises: a driven roller driving unit adapted to drive the first driven roller 112 and/or the second driven roller 118 to press the pole piece tape 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, the first driven roller driving unit 113 is adapted to drive the first driven roller 112 to move in an up-and-down direction, the second driven roller driving unit 119 is adapted to drive the second driven roller 118 to move in an up-and-down direction, when the first driven roller driving unit 113 drives the first driven roller 112 to move in the down direction, the first driven roller 112 presses the pole piece material belt 120 downwards 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 downwards, the second driven roller driving unit 119 presses the pole piece material belt 120 downwards and is adapted to cooperate with the second driving roller 117 to clamp the pole piece material belt 120, and at the same time, the pole piece material belt 120 moves in the conveying direction under the driving of the first driving roller 111 and the second driving roller 117, therefore, clamping and conveying of the pole piece material belt 120 are achieved, and the pole piece material belt 120 is prevented from being wrinkled or displaced, so that the machining precision is improved.

According to the high-speed slicing device provided by the embodiment, the driving roller driving unit is arranged to drive the first driving roller 111 and/or the second driving roller 117 to rotate, and the driven roller driving unit is arranged to drive the first driven roller 112 and/or the second driven roller 118 to press the pole piece material belt 120 tightly, so that the operability of the movement of the driving roller and the driven roller is improved, the starting and stopping and the rotating speed of the driving roller can be adjusted as required, and the clamping degree of the driven roller and the driving roller in matching is realized, so that the starting, stopping and the speed of the movement of the pole piece material belt 120 along the conveying direction can be adjusted as required, the tension of the pole piece material belt 120 is ensured, and the automation degree of the device is improved.

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

the second cutting unit further includes: and a second cutter driving unit 114 connected to the second cutter 115 and 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 arrows in fig. 3, the cutter driving unit drives the cutter to move downward to cut the pole piece material strap 120, the cutter unit drives the cutter to move downward, the cutter is lifted, and the pole piece material strap 120 moves toward the conveying direction. Through setting up the cutter drive unit drive the cutter motion has improved degree of automation, is favorable to improving machining efficiency.

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 apparatus further includes: and the driving roller 104 is arranged at the downstream of the second cutting unit and is suitable for providing a driving force for the pole piece material belt 120 along the conveying direction.

It should be noted that the cut pole piece material strap 120 forms the pole piece, the cut pole piece is easy to drop if the cut pole piece lacks support, and the driving roller 104 is disposed at the downstream of the second cutting unit, and not only can support the pole piece formed by the cut pole piece material strap 120, but also can provide driving force for the movement of the pole piece, so as to convey the pole piece out of the high-speed slicing apparatus.

Specifically, the high-speed slicing apparatus further includes: 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.

The high-speed section device that this embodiment provided, through the second cuts the low reaches setting of unit the drive roll 104, and with drive roll 104 cooperatees compression roller 105 realizes cutting back pole piece material area 120 presss from both sides tightly to for it provides the edge direction of delivery's drive power, from guaranteeing the smooth transport in pole piece material area after cutting avoids the pole piece to drop, is favorable to improving work efficiency.

Specifically, the high-speed slicing apparatus further includes: a driving roller driving unit 123 connected to the driving roller 104 and adapted to drive 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.

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

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

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

According to the high-speed slicing device provided by the embodiment, the driving roller 104 is driven to rotate by the driving roller driving unit 123, and the pressing roller driving unit 107 is arranged to drive the pressing roller 105 to press the pole piece material belt 120, so that the operability and the automation degree of the whole device are improved, and the processing efficiency is improved.

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

Optionally, a guide rail 102 is disposed between the base plate 103 and the base 101, and the guide rail 102 is adapted to provide a guide for the movement of the base plate 103.

The following describes in detail the operation steps of the high-speed slicing apparatus provided in this embodiment:

first, the first driving roller 111 is driven by the first motor 121 to rotate, the first driven roller 112 is driven by the first driven roller driving unit 113 to rotate the pole piece material strip 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, passes through a first cutting unit, enters 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 second driven roller 118 to move downwards to press the pole piece material belt 120, further conveying the pole piece material belt 120 to the second cutting unit, and then, the pole piece material belt 120 continuously moves along the conveying direction and passes through the driving roller 104 and the pressing roller 105, at this time, the pole piece material belt 120 is arranged in the high-speed slicing device in a penetrating manner;

then, the first cutter driving unit 108 drives the first cutter 109 to move downwards, and at the same time, the second cutter driving unit 114 drives the second cutter 115 to move downwards, so that the two cutters simultaneously fall 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 upwards, the second cutter driving unit 114 drives the second cutter 115 to move upwards, the cutter is lifted, the first conveying mechanism and the second conveying mechanism continue to convey the pole piece material strip 120 along the conveying direction, and meanwhile, the driving roller 104 cooperates with the pressing roller 105 to convey the cut pole piece material strip out of the high-speed cutting device;

and repeating the steps, and cutting the pole piece material belt 120 for the next time.

It should be noted that, the movement speed of the cutter and the conveying speed of the conveying unit to the pole piece material belt 120 are calculated and set in advance, when the cutter is lifted, the pole piece material belt moves along the conveying direction, and then when the cutter cuts the pole piece material belt 120 again, the pole piece material belt 120 just moves by the distance of one pole piece width, so that the pole pieces meeting the size requirement of lamination are processed; the high-speed slicing device provided by the embodiment is not only suitable for cutting common battery pole pieces, but also suitable for cutting short-blade battery pole pieces, and optionally, the length of the pole piece 5 is 400-590 mm, and the width of the pole piece is 80-200 mm; preferably, the high-speed slicing device is suitable for cutting pole pieces with the width of 120mm, and can better ensure the feeding precision and speed of the pole pieces.

Example two

As shown in conjunction with fig. 1-10, the present embodiment provides 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;

the high-speed slicing device 1 is arranged at the downstream of the unreeling device 2 and is used for cutting the anode material belt to obtain the anode plate 51 or cutting the cathode material belt to obtain the cathode plate; when the unwinding device 2 is a cathode unwinding device 22, the downstream of the high-speed slicing device 1 is provided with two membrane unwinding devices 23, the membrane unwinding devices 23 are wound with membrane material strips 6, the two membrane unwinding devices 23 are respectively arranged on the upper side and the lower side of the cathode material strips, the downstream of the membrane unwinding devices 23 is provided with a thermal compounding unit 7, the thermal compounding unit 7 is suitable for guiding the membrane material strips 6 and performing thermal compression compounding on the membrane material strips 6 and the cathode sheets, the downstream of the thermal compounding unit 7 is provided with a unit sheet cutting device 8, and the unit sheet cutting device 8 is used for cutting the membrane material strips 6 and the cathode sheets after the thermal compression compounding so as to form cathode unit sheets 52;

the lamination device comprises a first carrying device, a second carrying device and a lamination table, wherein the first carrying device is used for carrying a positive plate, the second carrying device is used for carrying a negative plate, and the negative plate and the positive plate are sequentially and alternately stacked on the lamination table to form a battery monomer;

the dimension D1 of the membrane material belt along the width direction is greater than the dimension D2 of the pole piece material belt 120 along the width direction, and the ratio range of D1 to D2 is not less than 1.01 and not more than D1: d2 is less than or equal to 1.08.

It should be noted that, the upper and lower sides of the negative electrode material tape refer to two sides along the direction "up and down" indicated by the arrow in fig. 8; in the working process of the laminating device, a material belt wound on the unreeling device 2 is paid out from the unreeling device under the driving of a driving device, wherein the material belt refers to a positive material belt, a negative material belt or a diaphragm material belt; the pole piece manufactured by the high-speed slicing device 1 provided by the first embodiment is an unmade pole piece; the diaphragm material belt is cut to form a single diaphragm, the ratio of the size of the diaphragm in the width direction to the width of the pole piece is 1.01-1.08, so as to ensure that the diaphragm can completely wrap the pole piece, wherein the width direction refers to the width direction indicated by an arrow in fig. 10.

At least one of the positive electrode sheets transported by the first transporting device and the negative electrode sheets transported by the second transporting device is manufactured by the high-speed slicing device 1 provided in the first embodiment, as an implementation mode, the lamination equipment is provided with two high-speed slicing devices 1, the two high-speed slicing devices 1 work simultaneously and are respectively used for manufacturing the positive electrode sheets and the negative electrode sheets, the first transporting device and the second transporting device work simultaneously, the first transporting device transports the positive electrode sheets, and the second transporting device transports the negative electrode unit sheets 52; as an alternative embodiment, the lamination apparatus is provided with one high-speed slicing apparatus 1, only one of the positive and negative electrode sheets is manufactured by the high-speed slicing apparatus 1 provided in example one, and the other electrode sheet is manufactured at the same time or in advance by another slicing apparatus, and then the positive electrode sheet is carried by the first carrying apparatus and the negative electrode unit sheet 52 is carried by the second carrying apparatus.

Optionally, the first carrying device and the second carrying device carry the pole pieces in a suction manner.

Optionally, the lamination device further includes a detection device and a deviation correction unit, the detection device is configured to detect an alignment state of the positive electrode plate and the negative electrode unit plate, and the deviation correction unit is configured to align the positive electrode plate and the negative electrode unit plate.

Optionally, the lamination device further includes: the guiding device is arranged between the unwinding device 2 and the high-speed slicing device 1, and is suitable for guiding the pole piece material strap 120 discharged from the unwinding device 2 and conveying the pole piece material strap into the high-speed slicing device 1.

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

Alternatively, the belt conveying device includes a vacuum belt conveying unit 41 and an inverted belt conveying unit 42. 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, the pole piece 5 is adsorbed on the conveying belt, and the pole piece 5 is prevented from falling off in the conveying process; the upside-down hanging belt conveying unit 42 is arranged, the pole piece is located below the conveying belt, and the pole piece 5 is adsorbed on the conveying belt to remove waste materials.

Optionally, before the pole piece material strap 120 enters the high-speed slicing device 1, the lamination device is further provided with a detection mechanism for detecting whether the tab positions of the pole piece material strap 120 are neat, so that the accuracy of the position of the pole piece material strap 120 is ensured, and the subsequent cutting precision is ensured.

Optionally, the pole piece material strap 120 is a positive pole piece material strap, a negative pole piece material strap or a diaphragm material strap; the pole piece 5 is a positive pole piece or a negative pole piece.

As shown in fig. 7, the positive electrode unwinding device 21 discharges a positive electrode material tape, and the positive electrode material tape is cut by the high-speed slicing device 1 to form a positive electrode sheet 51; referring to fig. 8, the negative electrode unwinding device 22 discharges a negative electrode material tape, the negative electrode material tape is cut by the high-speed slicing device 1 to form a negative electrode sheet, then the diaphragm unwinding device 23 discharges a diaphragm material tape 6, a layer of the diaphragm material tape is arranged on both the upper side and the lower side of the negative electrode material tape, the diaphragm material tape is attached to the negative electrode sheet after being thermally compounded by the thermal compounding unit 7, and then the negative electrode sheet 52 (bag-making type pole piece) is cut by the cell cutting device 8. Wherein, the up and down refer to the arrow in fig. 8 as "up" and "down"; the negative electrode unit piece comprises a negative electrode piece and an upper layer of diaphragm and a lower layer of diaphragm wrapping the negative electrode piece; the negative electrode unit pieces and the positive electrode pieces are sequentially stacked to form a bag type pole group, and then a single battery is formed.

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

firstly, the unwinding device 2 discharges the pole piece material belt 120, the pole piece material belt enters the guide device, and enters the high-speed slicing device 1 for cutting after sequentially passing through the guide of the roller assembly 31, the belt splicing assembly 32, the dust suction component 33, the process deviation correcting assembly 34, the tension roller assembly 35, the buffer roller assembly 36 and the transition roller assembly 37, and then the pole piece 5 obtained by cutting is conveyed out of the high-speed slicing device 1, and the pole piece is conveyed to the laminating device for laminating through the belt conveying device. A plurality of roller passing assemblies 31 are arranged among the belt splicing assembly 32, the dust suction component 33, the process deviation rectifying assembly 34, the tension roller assembly 35 and the buffer roller assembly 36 according to position requirements, so that redirection conveying of the pole piece material belt 120 is realized.

Specifically, the negative pole unwinding device 22 is configured to provide a negative pole material strap, the positive pole unwinding device 21 is configured to provide a positive pole material strap, the negative pole material strap is cut by the high-speed slicing device 1 to form a single negative pole piece, two diaphragm unwinding devices 23 are respectively disposed on two sides of the single negative pole piece, the single negative pole piece is respectively covered by the diaphragm material straps provided by the two diaphragm unwinding devices 23 on two sides thereof, and then is rolled into a continuous negative pole unit piece through the thermal compounding unit 7, the continuous negative pole unit piece is cut by the unit piece cutting device 8 to form a negative pole unit piece 52, meanwhile, the positive pole material strap is cut to form a single positive pole piece 51, the first carrying device simultaneously takes in a plurality of negative pole unit pieces, the second carrying device simultaneously takes in a plurality of positive pole unit pieces (the UVW platform is configured to correct the pole piece, and aligns the pole pieces), the stacking device stacks the negative pole unit pieces 52 and the positive pole pieces 51 in the same number on the stacking platform, a battery cell is formed in which the negative electrode unit pieces 52 and the positive electrode pieces 51 are alternately stacked on each other. It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

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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