CN105742720B - Winding device for battery core winding lamination machine - Google Patents

Abstract

The invention relates to the technical field of battery pole piece processing equipment, in particular to a winding device for a cell winding lamination machine, which comprises a sheet feeding assembly, a sheet cutting assembly, a first winding assembly, a second winding assembly and a cell blanking assembly, wherein the sheet feeding assembly is used for feeding diaphragm sheets with positive plates and negative plates respectively adhered to the two sides of the sheet feeding assembly, the sheet cutting assembly is used for cutting diaphragms of the sheets, the first winding assembly and the second winding assembly are used for clamping the sheets and driving the sheets to rotate so as to wind the sheets into cells, the first winding assembly and the second winding assembly are symmetrically arranged on the two sides of a connecting line of the sheet feeding assembly and the sheet cutting assembly, the first winding assembly and the second winding assembly are positioned behind the sheet cutting assembly, and the cell blanking assembly is positioned behind the first winding assembly and the second winding assembly. The invention has the advantages of simple structure, high working efficiency, stable operation and good lamination effect.

Description

Winding device for cell winding lamination machine

technical field

The invention relates to the technical field of battery pole piece processing equipment, in particular to a winding device for a battery core winding lamination machine.

Background technique

Lithium-ion battery is a new generation of green high-energy battery with excellent performance, and has become one of the focuses of high-tech development. Lithium-ion batteries have the following characteristics: high voltage, high capacity, low consumption, no memory effect, no pollution, small size, small internal resistance, less self-discharge, and more cycles. Because of the above-mentioned characteristics, lithium-ion batteries have been applied to many civilian and military fields such as mobile phones, notebook computers, video cameras, and digital cameras.

In the manufacturing process of lithium batteries, a laminating machine is usually used to assemble the positive and negative electrodes and separators of lithium battery cells into Z-shaped laminations to make batteries. The common lamination method in the prior art is the lamination table moving back and forth. The left and right two picking mechanical arm mechanisms of the lithium battery lamination equipment pick up the pole pieces in the positive and negative troughs, and then position them on the secondary positioning workbench. Finally, the material is alternately discharged on the stacking table. The stacking table moves left and right between the two mechanical arms to cooperate with the two mechanical arms. After stacking a piece of negative electrode, it moves to the positive electrode for stacking, and makes the isolation film form a Z shape. The positive and negative pole pieces are separated, and the equipment moves in such a cycle to realize the lamination assembly of the pole group. When the number of stacks reaches the set value, the cell transfer manipulator will transfer the pole group to the winding diaphragm station, and the winding manipulator will The pole group is clamped, and the pole group is covered with a diaphragm. After the diaphragm wrapped outside the pole group reaches the set number of turns, the cutter cuts the diaphragm and glues the end, and the equipment enters the assembly of the next pole group. The terminal anti-loose adhesive tape is pasted on the pole group of the outer diaphragm to form a complete battery cell.

On the one hand, the stacking table can only pick up one pole at a time between the positive and negative electrodes. The long loading time leads to slow lamination speed. The lamination speed is about 50p/m, and the work efficiency is low. Second, the whole machine The structure is complex, and the lamination table moves back and forth between the positive and negative poles and the operation is unstable, resulting in poor lamination effect.

Contents of the invention

In order to solve the above problems, the present invention provides a winding device for a cell winding lamination machine with simple structure, high working efficiency, stable operation and good lamination effect.

The technical solution adopted in the present invention is: a winding device for a cell winding stacker, including a sheet feeding assembly for feeding a diaphragm sheet with positive and negative sheets pasted on both sides, The sheet cutting assembly for cutting the diaphragm of the sheet, the first winding assembly and the second winding assembly for clamping the sheet and driving the sheet to rotate to wind the sheet into an electric core, and for electric The cell blanking assembly for core blanking, the first winding assembly and the second winding assembly are symmetrically arranged on both sides of the line connecting the sheet feeding assembly and the sheet cutting assembly, and the first winding assembly and the The second winding assemblies are located behind the sheet material cutting assembly, and the cell blanking assembly is located behind the first winding assembly and the second winding assembly.

A further improvement to the above technical solution is that the first winding assembly includes a first base, a first slide rail installed above the first base, a first sliding platform slid on the first slide rail, a first sliding table installed on the first The first clamping part on the slide table is used to clamp one side of the sheet, the first sliding power unit that drives the first slide table to slide along the first slide rail, and the first rotation power unit that drives the first clamping part to rotate; The second winding assembly includes a second base, a second slide rail installed above the second base, a second slide table slid on the second slide rail, and a second slide table installed on the second slide table for clamping the sheet The second clamping part on the side away from the first winding assembly, the second sliding power unit driving the second sliding table to slide along the second slide rail, and the second rotating power unit driving the second clamping part to rotate.

A further improvement to the above technical solution is that the cell blanking assembly includes a mounting base, a third sliding table located on the mounting base, a connecting plate slid on the third sliding table, and a connecting plate installed on the connecting plate for clamping Take the third clamping part of the electric core, and the third power unit that drives the connecting plate to move along the third slide table.

A further improvement to the above technical solution is that the sheet material cutting assembly includes two supporting plates arranged relatively parallel, an upper cutter and a lower cutting knife installed between the two supporting plates through a fixing plate, and drives the sheet to cut The fourth power unit moving in the cutting assembly, there is a gap between the upper cutter and the lower cutter for the sheet to pass through.

A further improvement to the above technical solution is that the sheet cutting assembly also includes a corner passing cardboard located on the side of the lower cutting knife close to the sheet material feeding assembly, two positioning rods vertically clamped on the corner passing cardboard, installed on the The two fixed cardboards above the lower cutter are used to fix the battery when cutting, and are connected between the two support plates and are parallel to the upper cutter and the lower cutter. A photoelectric sensor is installed.

A further improvement to the above technical solution is that U-shaped grooves are symmetrically opened on the two support plates, and the upper cutter and the lower cutter are screwed to the U-shaped grooves by screws to adjust the gap between the upper cutter and the lower cutter. .

A further improvement to the above technical solution is that the sheet feeding assembly includes a feeding conveyor belt for conveying the sheet, and a feeding driving unit that drives the sheet to move along the feeding conveyor belt.

The beneficial effects of the present invention are:

1. In the present invention, the material is fed by the sheet feeding assembly. After the sheet is conveyed by the sheet cutting assembly, it is sandwiched symmetrically by the first winding assembly and the second winding assembly, and the lamination is rotated. When the sheet is wound up to When the number of layers is preset, the winding is stopped, the sheet cutting component cuts off the diaphragm, and the battery is obtained, and then the battery is transferred to the next workstation through the battery cutting component. On the one hand, the present invention has a high degree of automation, and adopts the method of winding laminated sheets, so the work efficiency is high. On the other hand, the first winding assembly and the second winding assembly are symmetrically wound, and the force on both sides of the sheet is uniform, and the stacking The film effect is good, which is conducive to improving product quality.

2. The first winding assembly includes a first base, a first slide rail installed above the first base, a first slide table slid on the first slide rail, and a first slide table installed on the first slide table for clamping the sheet The first clamping part on one side, the first sliding power unit that drives the first sliding table to slide along the first slide rail, and the first rotating power unit that drives the first clamping part to rotate; the second winding assembly includes a second base , the second slide rail installed above the second base, the second slide table slid on the second slide rail, the second slide table installed on the second slide table for clamping the sheet on the side away from the first winding assembly The clamping part, the second sliding power unit driving the second sliding platform to slide along the second slide rail, and the second rotating power unit driving the second clamping part to rotate. The first sliding power unit and the second sliding power unit respectively drive the first clamping part and the second clamping part to slide along the first slide rail and the second slide rail to the sheet, and the first clamping part and the second clamping part The two sides of the sheet are clamped symmetrically, and the first rotary power unit and the second rotary power unit respectively drive the first clamping part and the second clamping part to rotate, so as to continuously wind the sheet for winding lamination. When the number of winding layers is predetermined, the winding is stopped, the first clamping part and the second clamping part release the sheet and move to the next sheet to clamp the next sheet, and the wound sheet is The subsequent cell blanking assembly is clamped, the first winding assembly and the second winding assembly have high working efficiency, and the winding stacking effect is good.

3. The cell blanking assembly includes a mounting seat, a third sliding table located on the mounting seat, a connecting plate slid on the third sliding table, and a third clamping part installed on the connecting plate for clamping the electric core 1. A third power unit that drives the connecting plate to move along the third sliding table. The third clamping part directly slides on the third sliding table with the connecting plate to clamp and place the battery cells, which has a simple structure and high cutting efficiency.

4. The sheet material cutting assembly includes two support plates arranged in parallel, an upper cutter and a lower cutter installed between the two support plates through a fixed plate, and a fourth power unit that drives the sheet to move in the cutting assembly , There is a gap between the upper cutter and the lower cutter for the sheet to pass through. The diaphragm is cut off through the cooperation of the upper cutter and the lower cutter, the cutting speed is fast, and the trimming is neat after cutting.

5. The sheet cutting assembly also includes a corner passing cardboard located on the side of the lower cutter close to the sheet material feeding assembly, two positioning rods vertically clamped on the corner passing cardboard, installed above the lower cutter for fixing when cutting The two fixed cardboards of the battery cell are connected between the two support plates and are parallel to the upper cutter and the lower cutter to install the fixed axis of the cardboard. The side of the support plate is also equipped with a photoelectric sensor. The sheet is supported by the cardboard at the corner to prevent the sheet from collapsing during the cutting process; the positioning rod is used to limit the sheet to prevent the sheet from shifting during the conveying process and ensure that the cutting edge is even when cutting; The sheet is fixed by two fixed cardboards during cutting to prevent the sheet from moving during cutting to ensure the cutting effect; the length of the sheet is detected by the photoelectric sensor to determine the position to be cut to further ensure the accuracy of cutting accuracy to improve product quality.

6. U-shaped grooves are symmetrically opened on the two support plates, and the upper cutter and the lower cutter are screwed to the U-shaped grooves by screws to adjust the gap between the upper cutter and the lower cutter. The gap between the upper cutter and the lower cutter can be adjusted according to the size of the product, so as to ensure that the diaphragm can be completely cut off in one cut, which improves the cutting efficiency and expands the scope of application of the present invention.

Description of drawings

Fig. 1 is a perspective view of the present invention;

Fig. 2 is the front view of the present invention;

3 is a perspective view of the first winding assembly of the present invention;

Fig. 4 is a perspective view of another viewing angle of the first winding assembly of the present invention;

5 is a perspective view of a second winding assembly of the present invention;

6 is a perspective view of another viewing angle of the second winding assembly of the present invention;

Fig. 7 is a perspective view of the cell blanking assembly of the present invention;

Fig. 8 is a perspective view of another viewing angle of the cell blanking assembly of the present invention;

Fig. 9 is a perspective view of the sheet material cutting assembly of the present invention;

Fig. 10 is a perspective view of another viewing angle of the sheet material cutting assembly of the present invention;

Fig. 11 is a perspective view of the sheet feeding assembly of the present invention;

Fig. 12 is a front view of the sheet feeding assembly of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Fig. 1 and Fig. 2, they are respectively a perspective view and a front view of the present invention.

The winding device 100 for the cell winding stacker includes a sheet feeding assembly 110 for feeding the separator sheet with the positive electrode sheet and the negative electrode sheet pasted on both sides respectively, and a sheet material feeding assembly 110 for cutting the separator of the sheet The sheet cutting assembly 120, the first winding assembly 130 and the second winding assembly 140 for clamping the sheet and driving the sheet to rotate to wind the sheet into a cell, and the cell blanking assembly The cell blanking assembly 150, the first winding assembly 130 and the second winding assembly 140 are symmetrically arranged on both sides of the line connecting the sheet feeding assembly 110 and the sheet cutting assembly 120, and the first winding assembly 130 and the The second winding assembly 140 is located behind the sheet cutting assembly 120, the cell unloading assembly 150 is located behind the first winding assembly 130 and the second winding assembly 140, the sheet feeding assembly 110, the sheet cutting assembly The assembly 120 , the first winding assembly 130 , the second winding assembly 140 and the cell blanking assembly 150 are all installed on the bottom plate 160 .

As shown in FIG. 3 and FIG. 4 , they are perspective views of different viewing angles of the first winding assembly of the present invention.

The first winding assembly 130 includes a first base 131, a first slide rail 132 installed above the first base 131, a first slide table 133 slid on the first slide rail 132, and a first slide table 133 installed on the first slide table 133. The first clamping part 134 that clamps one side of the sheet, the first sliding power unit 135 that drives the first sliding table 133 to slide along the first slide rail 132, and the first rotating power unit that drives the first clamping part 134 to rotate 136.

As shown in FIG. 5 and FIG. 6 , they are perspective views of different viewing angles of the second winding assembly of the present invention.

The second winding assembly 140 includes a second base 141, a second slide rail 142 installed above the second base 141, a second slide table 143 slidingly arranged on the second slide rail 142, and a second slide table 143 installed on the second slide table 143. The second clamping part 144 that clamps the sheet on the side away from the first winding assembly 130, the second sliding power unit 145 that drives the second sliding table 143 to slide along the second slide rail 142, and drives the second clamping part 144 The second rotary power unit 146 rotates. The first sliding power unit 135 and the second sliding power unit 145 respectively drive the first clamping part 134 and the second clamping part 144 to slide along the first slide rail 132 and the second slide rail 142 to the sheet, and the first clamping part 134 and the second clamping part 144 clamp both sides of the sheet material symmetrically, and the first rotary power unit 136 and the second rotary power unit 146 respectively drive the first clamping part 134 and the second clamping part 144 to rotate to continuously roll Wrap around the sheet to wind the lamination. When the predetermined number of winding layers is reached, the winding is stopped, and the first clamping part 134 and the second clamping part 144 release the sheet and move to the next sheet to remove the clamping. Hold the next sheet, and the wound sheet is clamped by the subsequent cell blanking assembly 150, the first winding assembly 130 and the second winding assembly 140 have high working efficiency, and the effect of winding the stack is good.

As shown in FIG. 7 and FIG. 8 , they are perspective views of the cell blanking assembly of the present invention from different angles of view.

The cell blanking assembly 150 includes a mounting base 151, a third sliding platform 152 located on the mounting base 151, a connecting plate 153 slidably arranged on the third sliding platform 152, and a connecting plate 153 installed on the connecting plate 153 for clamping the electric core. The third clamping portion 154 and the third power unit 155 drive the connecting plate 153 to move along the third slide 152 . The third clamping part 154 directly slides on the third sliding platform 152 along with the connecting plate 153 to clamp and place the battery cells, which has a simple structure and high cutting efficiency.

As shown in FIG. 9 and FIG. 10 , they are perspective views of the sheet cutting assembly of the present invention from different angles of view.

The sheet cutting assembly 120 includes two supporting plates 121 arranged in parallel, an upper cutter 122 and a lower cutting knife 123 installed between the two supporting plates 121 through a fixing plate, and a second device for driving the sheet to move in the cutting assembly. Four power units 124, gaps for the passage of sheets are provided between the upper cutter 122 and the lower cutter 123. The upper cutting knife 122 and the lower cutting knife 123 cooperate with each other to cut the diaphragm, the cutting speed is fast, and the trimming is neat after cutting.

The sheet cutting assembly 120 also includes a corner passing cardboard 125 positioned at the side of the lower cutting knife 123 close to the sheet material feeding assembly 110, two positioning rods 126 vertically clamped on the corner passing cardboard 125, and installed on the bottom cutting knife 123 for use. When cutting, the two fixed cardboards 127 for fixing the electric core are connected between the two support plates 121 and are parallel to the upper cutter 122 and the lower cutter 123 for installing the fixed axis 128 of the cardboard 127, and the side of the support plate 121 A photo sensor 121a is also installed. The sheet is supported by the cardboard 125 at the corner to prevent the sheet from collapsing during the cutting process; the positioning rod 126 is used to limit the sheet to prevent the sheet from shifting during conveying and ensure that the cutting edge is flat during cutting Qi; through two fixed boards 127 to fix the sheet when cutting, to prevent the sheet from moving when cutting, to ensure the cutting effect; to determine the position to be cut by detecting the length of the sheet through the photoelectric sensor 121a, further Ensure the accuracy of cutting to improve product quality.

U-shaped grooves 121b are symmetrically formed on the two support plates 121 , and the upper cutter 122 and the lower cutter 123 are screwed to the U-shaped grooves 121b to adjust the gap between the upper cutter 122 and the lower cutter 123 . The gap between the upper cutter 122 and the lower cutter 123 can be adjusted according to the size of the product, so as to ensure that the diaphragm can be completely cut off in one cut, which improves the cutting efficiency and expands the scope of application of the present invention.

As shown in Fig. 11 and Fig. 12, they are respectively a perspective view and a front view of the sheet feeding assembly of the present invention.

The sheet feeding assembly 110 includes a feeding conveyor belt 111 for conveying the sheet, and a feeding driving unit 112 for driving the sheet to move along the feeding conveyor belt 111 .

The present invention feeds material through the sheet feeding assembly 110, and the sheet is symmetrically clamped by the first winding assembly 130 and the second winding assembly 140 after being conveyed by the sheet cutting assembly 120, and the lamination is rotated, when the sheet roll When the winding reaches the preset number of layers, the winding is stopped, and the sheet cutting component 120 cuts off the diaphragm to obtain the battery cell, and then the battery cell is transferred to the next workstation through the cell cutting component 150 . On the one hand, the present invention has a high degree of automation, and adopts the method of winding laminated sheets, so the work efficiency is high. On the other hand, the first winding assembly 130 and the second winding assembly 140 are symmetrically wound, and the force on both sides of the sheet is even , The lamination effect is good, which is conducive to improving product quality.

Working principle of the present invention is:

Firstly, the diaphragm sheets with the positive electrode sheet and the negative electrode sheet pasted on both sides are transported to the sheet material cutting assembly 120 along with the feeding conveyor belt 111 under the action of the feeding drive unit 112;

Then, the sheet is fed to the sheet cutting assembly 120, passes through the cardboard 125 through the corner, and passes through the gap between the upper cutter 122 and the lower cutter 123 under the action of the fourth power unit 124;

Then, the sheet passes through the sheet cutting assembly 120 and reaches the middle of the first winding assembly 130 and the second winding assembly 140, and the first sliding power unit 135 and the second sliding power unit 145 respectively drive the first clamping part 134 and The second clamping part 144 slides to the sheet along the first slide rail 132 and the second slide rail 142, the first clamping part 134 and the second clamping part 144 symmetrically clamp both sides of the sheet, and the first rotating power unit 136 and the second rotating power unit 146 respectively drive the first clamping part 134 and the second clamping part 144 to rotate, so as to continuously wind the sheet to wind the lamination, and when the predetermined number of winding layers is reached, the winding is stopped , the first clamping part 134 and the second clamping part 144 loosen the sheet and move to the next sheet to clamp the next sheet, and the wound sheet is clamped by the subsequent cell blanking assembly 150 live,

Then, the upper cutter 122 and the lower cutter 123 of the sheet material cutting assembly 120 cut off the diaphragm of the electric core,

Finally, after cutting, the third power unit 155 of the cell blanking assembly 150 drives the third clamping part 154 to slide along the slide table to transfer the cells to the next workstation.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (6)

1. electric core winding laminating machine winding device, it is characterised in that：Including being pasted with positive plate and cathode respectively for two sides The sheet material loading assemblies of the diaphragm sheet material feeding of piece, the sheet material cut for the diaphragm to sheet material cut component, for pressing from both sides Firmly sheet material and sheet material is driven to rotate so that sheet material to be wound into the first winding assembly of battery core and the second winding assembly, is used under battery core The battery core blanking component of material, first winding assembly and the second winding assembly are symmetrically disposed on sheet material loading assemblies and sheet material is cut out The two sides of component line are cut, and the first winding assembly and the second winding assembly are respectively positioned on sheet material and cut component rear, the battery core Blanking component is located at the rear of the first winding assembly and the second winding assembly；First winding assembly includes first base, peace Loaded on above first base the first sliding rail, be slidedly arranged on the first sliding rail the first slide unit, be installed on the first slide unit for clamping First clamping part of sheet material side, the first sliding power unit for driving the first slide unit to slide along the first sliding rail, the first folder of driving Hold the first rotary power units of portion's rotation；Second winding assembly includes second base, is installed on above second base Second sliding rail, the second slide unit for being slidedly arranged on the second sliding rail are installed on the second slide unit for clamping sheet material away from first volume winding Second clamping part of part side, the second sliding power unit for driving the second slide unit to slide along the second sliding rail, the second clamping of driving Second rotary power units of portion's rotation.

2. electric core winding laminating machine winding device according to claim 1, it is characterised in that：The battery core blanking component Third slide unit including mounting base, in mounting base, the connecting plate being slidedly arranged on third slide unit are installed on connecting plate and are used for It clamps the third clamping part of battery core, be drivingly connected the third power unit that plate is moved along third slide unit.

3. electric core winding laminating machine winding device according to claim 2, it is characterised in that：The sheet material cuts component The upper cutter and lower cutter that are installed on including two support plates relatively disposed in parallel, by fixed plate between two support plates, The 4th power unit that driving sheet material moves in cutting component, is equipped between the upper cutter and lower cutter and passes through for sheet material Gap.

4. electric core winding laminating machine winding device according to claim 3, it is characterised in that：The sheet material cuts component It further include being located at corner of the lower cutter close to sheet material loading assemblies side to cross cardboard, be vertically arranged in two that corner is crossed on cardboard Locating rod, be installed on above lower cutter determine cardboard for two of battery core fixed when cutting, be connected between two support plates and Upper cutter and lower cutter are parallel to for installing the fixing axle for determining cardboard, the support plate side is also equipped with photoelectric sensor.

5. electric core winding laminating machine winding device according to claim 4, it is characterised in that：It is symmetrical in two support plates U-lag is offered, the upper cutter and lower cutter pass through screw and be bolted in U-lag to adjust between upper cutter and lower cutter Gap.

6. electric core winding laminating machine winding device according to claim 5, it is characterised in that：The sheet material loading assemblies The feeding driving unit moved including feeding conveyer belt, the driving sheet material for feeding sheets along feeding conveyer belt.