An electrode core forming stacker and method

Abstract

The application discloses a kind of battery cell forming lamination equipment and method.The battery cell forming lamination equipment includes frame, lamination device, feeding device and pulling device, the lamination device includes a receiving cavity, the end of feeding direction of feeding device is just above the receiving cavity, pulling device is arranged between lamination device and feeding device, and the raw material of battery cell lamination is sent into lamination device by feeding device to automatically complete lamination.According to the battery cell forming lamination equipment of the application, the battery cell forming lamination equipment is simple in structure, and can efficiently laminate the battery cell.According to the battery cell forming lamination method of the application, the reciprocating motion when mechanical hand takes material is saved, feeding and lamination are carried out at the same time, and the efficiency of battery cell lamination is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium batteries, in particular to a cell forming lamination device and method. BACKGROUND

[0002] There are many cell forming processes, one of which uses a lamination method. The quality of the lamination method is related to the subsequent cell forming efficiency, and as the length-width size ratio of the cell pole piece becomes larger and larger, the traditional lamination method cannot meet the market demand. There are mainly two lamination methods on the market, one of which is that the lamination table does not move, the isolation film moves in a Z shape, and the mechanical hand or pole piece clamp reciprocally feeds the positive and negative pole pieces, and such a cycle is repeated until the set number of layers, the lamination table rotates 1 to 3 turns to complete the isolation film covering and then pastes the glue to complete the lamination action. In this lamination method, the mechanical hand reciprocating feeding and the mechanical hand correcting the pole piece position all need time, the whole process is complex to operate, and it is difficult to improve the lamination efficiency; the other existing lamination method is that the lamination table moves the isolation film left and right, the lamination table moves to the opposite positive pole after stacking a negative pole, and such a cycle is repeated until the set number of layers, the lamination table rotates 1 to 3 turns to complete the isolation film covering and then pastes the glue to complete the lamination action. In this method, the lamination table reciprocating motion needs time, the whole process is complex to operate, and the lamination efficiency is also difficult to improve. SUMMARY

[0003] The present application aims to solve one of the technical problems in the prior art. To this end, the present application provides a cell forming lamination device, which is simple in structure and can efficiently laminate.

[0004] The present application also provides a cell forming lamination method.

[0005] According to the cell forming lamination device of the first aspect of the present application, the device comprises a rack, a lamination device arranged on the rack, the lamination device comprising a receiving cavity for lamination and receiving a completed cell, a feeding device arranged on the rack, the feeding device having a feeding direction, and the end of the feeding direction being opposite to the top of the receiving cavity, the feeding device being used for feeding cell lamination raw materials, and a pulling device arranged between the lamination device and the feeding device.

[0006] The cell forming and stacking device has at least the following technical effects: the feeding device sends out the cell stacking raw material, and the cell stacking raw material automatically completes stacking when entering the receiving cavity. Specifically, when the cell stacking raw material is sent out from the end of the feeding device, the pulling device first grabs the head end of the cell stacking raw material. Since the cell stacking raw material is the isolation film uniformly provided with the pole piece group, when the part of the cell stacking raw material with the pole piece is sent out by the feeding device, the part of the cell stacking raw material with the pole piece falls into the receiving cavity. At this time, the pulling device is released, the head end of the cell stacking raw material is released, and the part of the isolation film of the cell stacking raw material is stacked below the part of the cell stacking raw material with the pole piece. After the pulling device is released, the feeding device continues to feed, and the part of the cell stacking raw material with the pole piece and the part of the isolation film of the cell stacking raw material are alternately sent out. When the part of the cell stacking raw material with the pole piece continues to be sent into the stacking device, the part of the isolation film of the cell stacking raw material is pulled flat and stacked below to complete the automatic stacking of the cell.

[0007] According to some embodiments of the present application, the bottom surface of the receiving cavity forms an angle α with the horizontal plane, and the feeding device comprises a feeding platform, and the feeding platform forms an angle β with the bottom surface of the receiving cavity.

[0008] According to some embodiments of the present application, the stacking device comprises a first baffle, a second baffle, a material receiving plate, a first driving device, and a second driving device. The material receiving plate is arranged between the first baffle and the second baffle, and the first baffle and the second baffle are mutually enclosed to form the receiving cavity. The first driving device is drivingly connected with the material receiving plate, and the second driving device is drivingly connected with the second baffle.

[0009] According to some embodiments of the present application, a wind knife is further included, and the wind knife is arranged on the rack, and the air outlet direction of the wind knife is directed between the stacking device and the feeding device.

[0010] According to some embodiments of the present application, a material taking device and a flattening device are further included, and the material taking device and the flattening device are arranged on the rack. The material taking device is used to grab the stacked cell stacking.

[0011] According to some embodiments of the present application, a cutting device is further included, and the cutting device is arranged on the rack and above the stacking device.

[0012] According to the method for forming the cell laminated sheet according to the second aspect of the present application, the method comprises the following steps: a feeding device feeds the cell laminated sheet raw material above a laminating device; a pulling device grabs the head of the cell laminated sheet raw material and moves it to the front of the laminating device, the head of the cell laminated sheet raw material being the part of the separator in the cell laminated sheet raw material; the feeding device continues to feed, the part of the cell laminated sheet raw material with the electrode sheet is fed and falls into the laminating device, the pulling device releases the head of the cell laminated sheet raw material, the part of the cell laminated sheet raw material with the electrode sheet pulls the part of the separator in the cell laminated sheet raw material flat and stacks above the part of the separator in the cell laminated sheet raw material; the feeding device continues to feed, the part of the cell laminated sheet raw material with the electrode sheet and the part of the separator in the cell laminated sheet raw material are fed alternately, when the part of the cell laminated sheet raw material with the electrode sheet is fed into the laminating device, the part of the separator in the cell laminated sheet raw material previously fed is pulled flat and stacked above the part of the separator in the cell laminated sheet raw material; the feeding device continues to feed until the laminating of a group of cells is completed.

[0013] According to the folding method of the cell forming laminated sheet device according to the embodiment of the present application, at least the following technical effects are achieved: by arranging the feeding device and the laminating device and the pulling device arranged therebetween, after the feeding device feeds the cell laminated sheet raw material, the cell laminated sheet raw material falls into the receiving cavity to complete the automatic laminating of the cell, the feeding process and the laminating process are performed simultaneously, so that the cell forming laminated sheet can be efficiently formed.

[0014] According to some embodiments of the present application, the feeding of the cell laminated sheet raw material above the laminating device by the feeding device comprises: the feeding device is arranged obliquely and feeds the cell laminated sheet raw material above the obliquely arranged laminating device at a certain angle.

[0015] According to some embodiments of the present application, when the part of the cell laminated sheet raw material with the electrode sheet is fed into the laminating device, the receiving plate moves downward by one stroke each time.

[0016] According to some embodiments of the present application, the method further comprises the following steps: after the laminating of a group of cells is completed, the second baffle is lowered, the taking device is inserted into the laminating device to grab the laminated cell laminated sheet; the taking device leaves the laminating device after grabbing the cell laminated sheet, the pulling device grabs the cell laminated sheet raw material, and the cutting device cuts the connection between the cell laminated sheet raw material and the cell laminated sheet; the smoothing device pastes the excess separator on the cell laminated sheet and pastes the adhesive tape on the cell laminated sheet to complete the forming of the cell laminated sheet.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0019] Figure 1 is a structural schematic diagram of an electrode core forming laminating device according to an embodiment of the present application;

[0020] Figure 2 is a structural schematic diagram of a pulling device of an electrode core forming laminating device according to an embodiment of the present application when working;

[0021] Figure 3 is a structural schematic diagram of an electrode core forming laminating device according to an embodiment of the present application when laminating a first layer;

[0022] Figure 4 is a structural schematic diagram of a wind knife of an electrode core forming laminating device according to an embodiment of the present application when working;

[0023] Figure 5 is a structural schematic diagram of an electrode core forming laminating device according to an embodiment of the present application when laminating a last layer;

[0024] Figure 6 is a structural schematic diagram of a material taking device and a cutting device of an electrode core forming laminating device according to an embodiment of the present application when working;

[0025] Figure 7 is a structural schematic diagram of a smoothing device of an electrode core forming laminating device according to an embodiment of the present application when working;

[0026] Figure 8 is a structural schematic diagram of an electrode core laminating raw material according to an embodiment of the present application;

[0027] Figure 9 is a structural schematic diagram of an electrode core laminating finished product according to an embodiment of the present application.

[0028] Reference Signs:

[0029] Laminating device 100, first baffle 110, second baffle 120, material collecting plate 130, first driving device 140, second driving device 150, feeding device 200, pulling device 300, wind knife 400, material taking device 500, cutting device 600, smoothing device 700, electrode core laminating finished product 800, isolation film 810, positive electrode sheet 820, negative electrode sheet 830. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described below in the accompanying drawings, in which like reference numerals refer to like elements or elements with similar functionality throughout. The embodiments described below are exemplary and are not intended to limit the present application.

[0031] In the description of the present application, it needs to be understood that, if there is a description of orientation, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0032] In the description of the present application, if there is a description of first, second, etc. for the purpose of distinguishing technical features, it cannot be understood as indicating or implying the relative importance of the technical features indicated or implying the number of technical features indicated or implying the order of the technical features indicated.

[0033] In the description of the present application, unless otherwise explicitly limited, the words such as arrangement, installation, connection, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0034] The following refers to Figures 1 to 9 The cell forming lamination device according to the embodiments of the present application is described below.

[0035] For example, as Figure 1 shown, the cell forming lamination device according to the embodiments of the present application comprises a rack, a lamination device 100 arranged on the rack, the lamination device 100 comprising a receiving cavity for laminating and receiving the completed cell, a feeding device 200 arranged on the rack, the feeding device 200 having a feeding direction, and the end of the feeding direction being opposite to the top of the receiving cavity, the feeding device 200 being used for feeding the cell lamination raw material, and a pulling device 300 arranged on the rack, the pulling device 300 being arranged between the lamination device 100 and the feeding device 200.

[0036] As Figure 1As shown, the battery cell forming and stacking equipment includes a frame, a stacking device 100, a feeding device 200, and a pulling device 300. The stacking device 100 includes a receiving cavity. The feeding device 200 is inclinedly positioned above the stacking device 100, with the end of the feeding device 200 facing directly above the receiving cavity. After the separator membrane 810 is conveyed out by the feeding device 200, it falls into the receiving cavity and automatically completes the stacking. The feeding device 200 can be a conveyor belt or a conveyor roller, but is not limited to either of these. The pulling device 300 is positioned between the feeding device 200 and the stacking device 100 and is used to grasp the beginning of the battery cell stacking material. The pulling device 300 can grasp the battery cell stacking material through vacuum adsorption or electrostatic adsorption, but is not limited to these two methods.

[0037] According to an embodiment of the present invention, in the battery cell forming and stacking equipment, the feeding device 200 delivers the battery cell stacking raw materials, which fall into the stacking device 100 and automatically stack together, efficiently completing the battery cell stacking. Specifically, as... Figure 8 As shown, the raw material for battery cell lamination is a separator 810 with electrode groups evenly arranged, and a negative electrode 830 is attached to the separator 810 every few electrode groups. When the feeding device 200 feeds out the raw material for battery cell lamination, the first end of the raw material is fed out first, and then the pulling device 300 moves to grasp the first end of the raw material and pulls it to move below the feeding device 200. At this time, the feeding device 200 continues to feed, feeding out the part of the raw material with electrode groups attached. After the part of the raw material with electrode groups attached is fed out, it will fall into the receiving cavity and stack the first end of the raw material at the bottom. At this time, the pulling device 300 releases its grip on the first end of the raw material, thus completing the lamination of the first layer of the battery cell. Then, the feeding device 200 continues to feed, alternately feeding out the portion of the battery cell stacking material with the electrode sheet attached and the portion with the separator film. When the portion of the battery cell stacking material with the electrode sheet attached is fed out, it will automatically fall into the receiving cavity, and will flatten and stack the portion of the previously fed battery cell stacking material with the separator film underneath it. The battery cell forming and stacking equipment continues to work until only the portion of the battery cell stacking material with the negative electrode sheet 830 attached enters the receiving cavity, thus completing the automatic stacking of a set of battery cells. At this time, the user can manually disconnect the connection between the battery cell stacking material and the battery cell stacking to remove the battery cell stacking.

[0038] In some specific embodiments of the present invention, the bottom surface of the receiving cavity forms an angle α with the horizontal plane, and the feeding device 200 includes a feeding platform, which forms an angle β with the bottom surface of the receiving cavity. For example, as Figure 1As shown, when the feeding device 200 and the laminating device 100 are horizontally arranged, the forming quality of the battery cell laminates is low, and in the case of small size of the pole piece group, the part of the battery cell laminate raw material with the pole piece attached may not be able to smoothly pull the part of the separator film in the previously fed battery cell laminate raw material when being fed out. At this time, by arranging the feeding device 200 and the laminating device 100 at an angle, the forming quality of the battery cell laminates can be effectively improved. Specifically, the part of the battery cell laminate raw material with the pole piece attached is first fed out at a certain angle, and after one end is in contact with the receiving cavity, it is deflected at a certain angle to complete a layer of laminates. Compared with the horizontally arranged feeding device 200 and laminating device 100, the feeding device 200 and laminating device 100 arranged at an angle require a smaller deflection angle of the part of the battery cell laminate raw material with the pole piece attached during the laminating process, and the laminating process is more stable. When the battery cell forming and laminating equipment needs to laminate different specifications of battery cell laminate raw materials, the user can adjust the angles of α and β to adapt to the production needs of different battery cell laminate raw materials.

[0039] In some embodiments of the present application, the laminating device 100 comprises a first baffle 110, a second baffle 120, a receiving plate 130, and a first driving device 140. The receiving plate 130 is arranged between the first baffle 110 and the second baffle 120 and is surrounded by the first baffle 110 and the second baffle 120 to form a receiving cavity. The first driving device 140 is drivingly connected with the receiving plate 130. For example, as shown in FIG. 1, the first baffle 110 and the second baffle 120 are arranged on the left and right sides of the receiving plate 130, respectively, and the receiving plate 130 is arranged between the first baffle 110 and the second baffle 120 to form a receiving cavity. Figures 1 to 6As shown, the first baffle 110, the second baffle 120 and the receiving plate 130 are mutually enclosed to form a receiving cavity, and the size of the receiving cavity is matched with the size of the pole piece group. After the part of the raw material of the cell stack with the pole piece enters the receiving cavity from the feeding device 200, the first baffle 110 and the second baffle 120 will play a positioning role on this part, so that it will not be deviated in position in the receiving cavity. The first driving device 140 is a lead screw transmission mechanism, which includes a motor and a lead screw. The lead screw is connected with the receiving plate 130. When the motor drives the lead screw to rotate, the receiving plate 130 will rise or fall according to the direction of the rotation of the lead screw. It is worth noting that the lead screw transmission mechanism is only one of the embodiments of the first driving device 140, and the embodiment of the first driving device 140 is not limited to this. By setting the first baffle 110, the second baffle 120 and the receiving plate 130 in the stacking device 100, and making them mutually enclosed to form a receiving cavity matched with the size of the pole piece group, the part of the raw material of the cell stack with the pole piece can be positioned, so that it can be accurately stacked when it falls into the stacking device 100 each time, and a large positional deviation will not occur, thereby effectively improving the product quality of the cell stack finished product 800. By setting the first driving device 140 drivingly connected with the receiving plate 130 in the stacking device 100, the first driving device 140 will drive the receiving plate 130 to fall a stroke each time after stacking, so that the part of the raw material of the cell stack with the pole piece will be at the same height each time when it falls into the stacking device 100, and the cell stacking process is more stable.

[0040] In further embodiments of the present application, the stacking device 100 further comprises a second driving device 150 drivingly connected with the second baffle 120. For example, as shown in Figure 1 and Figure 6 The second driving device 150 is a pneumatic cylinder, and the second baffle 120 is connected with the output end of the pneumatic cylinder. Under the driving of the pneumatic cylinder, the second baffle 120 can make reciprocating motion up and down. It is worth noting that the pneumatic cylinder is only one of the embodiments of the second driving device 150, and the embodiment of the second driving device 150 is not limited to this. By setting the second driving device 150 drivingly connected with the second baffle 120 in the stacking device 100, when the cell stacking is completed, the second driving device 150 drives the second baffle 120 to fall, so that the user can easily take out the formed cell stack from the side of the stacking device 100. After the cell stack is taken out, the second driving device 150 drives the second baffle 120 to rise again, and the cell forming and stacking equipment can continue to stack the next cell.

[0041] In some specific embodiments of the present application, a wind knife 400 is further included, which is arranged on the rack, and the air outlet direction of the wind knife 400 points to the stacking device 100 and the feeding device 200. For example, as shown in Figure 1 andFigure 4 As shown in FIG. 4, the air knife 400 is arranged between the feeding device 200 and the laminating device 100, and is arranged opposite to the pulling device 300. When the feeding speed of the feeding device 200 is fast and the forming speed of the battery cell is high, the part of the separator film in the battery cell laminating raw material may be stacked together during the process of being sent to the laminating device 100, thereby affecting the product quality. At this time, by arranging the air knife 400 in the battery cell forming and laminating equipment, the movement state of the part of the separator film in the battery cell laminating raw material can be controlled. Specifically, when the air knife 400 is working, the part of the separator film in the battery cell laminating raw material will be blown to the direction where the pulling assembly is arranged, and when the part of the battery cell laminating raw material with the pole piece is sent out, the part of the separator film in the battery cell laminating raw material will be pulled flat and stacked below. By arranging the air knife 400 in the battery cell forming and laminating equipment, the stacking of the part of the separator film in the battery cell laminating raw material during the laminating process can be effectively prevented, and the production quality of the product is improved.

[0042] In some embodiments of the present application, a material taking device 500 is further included, the material taking device 500 is arranged on the rack, and the material taking device 500 is used to grab the laminated battery cell laminates. For example, as shown in FIG. 5, Figure 1 Figure 6 As shown in FIG. 5, the material taking device 500 is arranged behind the second baffle 120, and the material taking device 500 can be a mechanical hand, but is not limited to this. When the second baffle 120 is lowered, the material taking device 500 extends into the laminating device 100 to take out the battery cell laminates 800. By arranging the material taking device 500 in the battery cell forming and laminating equipment, the production efficiency of the battery cell forming and laminating equipment is effectively improved.

[0043] In some embodiments of the present application, a cutting device 600 is further included, the cutting device 600 is arranged on the rack, and the cutting device 600 is arranged above the laminating device 100. For example, as shown in FIG. 6, Figure 1 Figure 6 ​​As shown, the cutting device 600 is arranged above the laminating device 100. When the cell laminating raw material is long enough to stack multiple groups of cell laminates, the cell laminating raw material needs to be cut after each group of cell laminates is stacked, so that the cell laminates are separated from the cell laminating raw material for the next group of cell laminates. By arranging the cutting device 600 in the cell forming laminating device 100, the cutting device 600 can cut the cell laminating raw material to separate the cell laminates after each group of cell laminates is completed. Specifically, after a group of cell laminates is completed, the second baffle 120 is lowered first, the taking device 500 grabs the cell laminates and moves backward, the feeding device 200 continues to feed the part of the separator film in the cell laminating raw material, the pulling device 300 moves to grab the part of the separator film in the cell laminating raw material, and the cutting device 600 is lowered to cut the separator film 810, so that the cell laminates are separated from the cell laminating raw material. After cutting, the cutting device 600, the receiving plate 130 and the second baffle 120 are reset, and the pulling device 300 resets the first end of the cell laminating raw material to prepare for the next group of cell laminates. The cutting method of the cutting device 600 includes hot melt cutting, laser cutting and mechanical cutting, but is not limited to one of the three.

[0044] In some embodiments of the present application, a smoothing device 700 is further included, which is arranged on the rack and is used to attach the excess separator film 810 to the cell laminates. For example, as shown in Figure 1 and Figure 7 The smoothing device 700 is arranged below the taking device 500, and after the cutting device 600 separates the cell laminate product from the cell laminating raw material, the smoothing device 700 attaches the excess separator film 810 to the surface of the cell laminate product. By arranging the smoothing device 700 in the cell forming laminating device, the production efficiency and quality of the cell forming laminating device are effectively improved.

[0045] According to the method for forming and laminating the battery cell according to the second aspect of the present application, the method comprises the following steps: the feeding device 200 feeds the battery cell laminating raw material above the laminating device 100; the pulling device 300 grabs the head of the battery cell laminating raw material and moves it to the front of the laminating device 100, the head of the battery cell laminating raw material being the part of the separator in the battery cell laminating raw material; the feeding device 200 continues to feed, the part of the battery cell laminating raw material with the electrode plate is fed and falls into the laminating device 100, the pulling device 300 releases the head of the battery cell laminating raw material, the part of the battery cell laminating raw material with the electrode plate pulls the part of the separator in the battery cell laminating raw material flat and laminates above the part of the separator in the battery cell laminating raw material; the feeding device 200 continues to feed, the part of the battery cell laminating raw material with the electrode plate and the part of the separator in the battery cell laminating raw material are fed alternately, the part of the separator in the battery cell laminating raw material previously fed is pulled flat and laminated above the part of the separator in the battery cell laminating raw material; the feeding device 200 continues to feed until the lamination of a group of battery cells is completed.

[0046] Through the above folding method, the automatic lamination of the battery cell can be efficiently and accurately completed. By arranging the feeding device 200 and the laminating device 100 and the pulling device 300 arranged therebetween, after the battery cell laminating raw material is fed by the feeding device 200, the battery cell laminating raw material falls into the receiving cavity to complete the automatic lamination of the battery cell, the feeding process and the lamination process are simultaneously performed, so that the formation and lamination of the battery cell can be efficiently performed.

[0047] According to the method for forming and laminating the battery cell according to the second aspect of the present application, the feeding device 200 feeds the battery cell laminating raw material above the laminating device 100, which comprises: the feeding device 200 is arranged obliquely and feeds the battery cell laminating raw material above the obliquely arranged laminating device 100 at a certain angle.

[0048] Through the above folding method, the feeding device 200 and the laminating device 100 are arranged obliquely, so that the battery cell laminating raw material can be fed at a certain angle and automatically laminated in the receiving cavity, the angle of deflection of the battery cell laminating raw material during the feeding and lamination process is reduced, and the formation quality of the battery cell lamination is improved.

[0049] According to the method for forming and laminating the battery cell according to the second aspect of the present application, when the part of the battery cell laminating raw material with the electrode plate is fed into the laminating device 100, the receiving plate 130 moves downward by one stroke.

[0050] Through the folding method, the receiving plate 130 can reciprocate under the driving of the first driving device 140 to adapt to the height of the electrode sheet stack in the receiving cavity, so that the part of the electrode sheet stack with the electrode sheet is at the same height when entering the receiving cavity each time, ensuring the smooth operation of the electrode sheet folding.

[0051] According to the electrode sheet forming method of the second aspect of the present application, the second baffle 120 is lowered after a group of electrode sheet stacks is completed, the material taking device 500 is extended into the electrode sheet folding device 100 to grab the completed electrode sheet stack, the material taking device 500 is withdrawn from the electrode sheet folding device 100 after grabbing the electrode sheet stack, the pulling device 300 grabs the electrode sheet raw material, the cutting device 600 cuts the connection between the electrode sheet raw material and the electrode sheet, and the smoothing device 700 pastes the excess separator 810 on the electrode sheet and pastes adhesive tape on the electrode sheet to complete the forming of the electrode sheet.

[0052] Through the folding method, the second baffle 120 can reciprocate under the action of the second driving device 150, the user can lower the second baffle 120 to take out the electrode sheet product 800 after the electrode sheet is completed, then raise the second baffle 120 to prepare for the next group of electrode sheet folding, the electrode sheet forming device can automatically take out the electrode sheet after the electrode sheet is completed, cut the connection between the electrode sheet and the electrode sheet raw material, and paste the excess separator 810 on the surface of the electrode sheet, effectively improving the efficiency of the electrode sheet folding process and the quality of the electrode sheet.

[0053] The following will be described with reference to Figures 1 to 9 The electrode sheet forming device and method according to the embodiments of the present application are described in detail with a specific embodiment. It should be understood that the following description is only exemplary and is not a specific limitation of the application.

[0054] As Figures 1 to 9As shown, the cell forming laminating device comprises a rack, a laminating device 100, a feeding device 200, a pulling device 300, an air knife 400, a taking device 500, a cutting device 600 and a smoothing device 700. The laminating device 100 comprises a first baffle 110, a second baffle 120, a receiving plate 130, a first driving device 140 and a second driving device 150. The first baffle 110, the second baffle 120 and the receiving plate 130 form a receiving cavity. The size of the receiving cavity is matched with the size of the pole piece group. The first driving device 140 is drivingly connected with the receiving plate 130. The second driving device 150 is drivingly connected with the second baffle 120. The laminating device 100 is inclinedly arranged. The receiving plate 130 has an angle α with the horizontal plane. The feeding device 200 is inclinedly arranged above the laminating device 100. The feeding platform of the feeding device 200 has an angle β with the receiving plate 130. The pulling device 300 is arranged between the feeding device 200 and the laminating device 100, and below the feeding device 200. The air knife 400 is oppositely arranged with the pulling device 300, and above the laminating device 100. The taking device 500 is arranged behind the laminating device 100. The cutting device 600 is arranged above the laminating device 100. The smoothing device 700 is arranged behind the laminating device 100.

[0055] When the cell forming and laminating device is working, the feeding device 200 sends out the first end of the cell laminating raw material, the pulling device 300 pulls the first end of the cell laminating raw material, the feeding device 200 continues to send out the cell laminating raw material, when the part of the cell laminating raw material with the pole piece is sent out and enters the laminating device 100, the part of the cell laminating raw material with the pole piece will flatten the part of the cell laminating raw material with the isolation film and stack below, the feeding device 200 continues to feed, the part of the cell laminating raw material with the pole piece and the part of the cell laminating raw material with the isolation film will be sent out alternately, when the part of the cell laminating raw material with the isolation film is sent out, under the action of the air knife 400, the part of the cell laminating raw material with the isolation film will have a movement trend away from the air knife 400, avoiding the part of the cell laminating raw material with the isolation film from stacking together, when the part of the cell laminating raw material with the pole piece is sent out, the part of the cell laminating raw material with the pole piece will stack the part of the cell laminating raw material with the isolation film below to complete the cell pole piece. When the cell laminating raw material completes laminating in the laminating device 100 once, the receiving plate 130 will move downward by a stroke under the driving of the first driving device 140. When the part of the cell laminating raw material with only the negative pole piece 830 is entered into the receiving cavity and completes laminating, the laminating of a group of cells is completed, at this time the second baffle 120 will move downward under the driving of the second driving device 150, and the taking device 500 can extend into the laminating device 100 to grab the cell laminating. After the taking device 500 grabs the cell laminating, the pulling device 300 moves to grab the part of the cell laminating raw material with the isolation film, the cutting device 600 moves downward to cut off the connection between the cell laminating raw material and the cell laminating, and the smoothing hand then attaches the excess isolation film 810 to the surface of the cell laminating, thereby completing the production of the cell laminating. After the cell laminating is taken out, the pulling device 300 resets in the state of pulling the part of the cell laminating raw material with the isolation film, and other mechanisms in the cell forming and laminating device 100 also reset, ready for the next cell laminating.

[0056] According to the battery cell laminating device, the feeding device 200 and the laminating device 100 are arranged obliquely, and the receiving cavity is matched with the shape and size of the pole piece group, so that the pole piece adhered part of the battery cell laminating raw material can be automatically stacked with the pole piece adhered part of the previous battery cell laminating raw material when entering the laminating device 100. The receiving plate 130 can be driven by the first driving device 140 to move up and down, so that the battery cell laminating raw material entering the laminating device 100 each time is at the same height, and the laminating operation is ensured to be stable. After the battery cell lamination is completed, the second baffle 120 is lowered, and the user can easily take out the battery cell laminating product 800 from the side of the laminating device 100. The pulling device 300, the cutting device 600 and the taking device 500 work together, so that the battery cell laminating product can be automatically taken out while the connection between the battery cell laminating product and the battery cell laminating raw material is cut off, and the production efficiency of the battery cell laminating device is improved. The smoothing device 700 can attach the excess isolation film 810 to the surface of the battery cell pole piece after the connection between the battery cell laminating raw material and the battery cell laminating product is cut off, and the quality of the battery cell laminating product is improved.

[0057] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery cell forming and stacking equipment, characterized in that, It comprises: a rack; a lamination device (100) arranged on the rack, the lamination device (100) comprising a receiving cavity for receiving a completed battery cell; a feeding device (200) arranged on the rack, the feeding device (200) being arranged at the end of the feeding direction above the higher side of the receiving cavity, the feeding device (200) being used for feeding a battery cell lamination material; a pulling device (300) arranged on the rack, the pulling device (300) being arranged between the lamination device (100) and the feeding device (200), the pulling device (300) being used for moving and pulling the leading end of the battery cell lamination material to the lower side of the feeding device (200), the leading end of the battery cell lamination material being the part of the separator in the battery cell lamination material; an angle α is formed between the bottom surface of the receiving cavity and the horizontal plane, and the feeding device (200) comprises a feeding platform, an angle β is formed between the feeding platform and the bottom surface of the receiving cavity.

2. The cell forming stack apparatus of claim 1, wherein, The lamination device (100) comprises a first baffle (110), a second baffle (120), a receiving plate (130), a first driving device (140) and a second driving device (150), the receiving plate (130) is arranged between the first baffle (110) and the second baffle (120), and the first baffle (110) and the second baffle (120) are mutually enclosed to form the receiving cavity, the first driving device (140) is drivingly connected with the receiving plate (130), and the second driving device (150) is drivingly connected with the second baffle (120).

3. The cell forming stack apparatus of claim 1, wherein, It further comprises an air knife (400) arranged on the rack, the air knife (400) being arranged between the lamination device (100) and the feeding device (200).

4. The cell forming stack apparatus of claim 1, wherein, It further comprises a material taking device (500) and a flattening device (700), the material taking device (500) and the flattening device (700) being arranged on the rack, the material taking device (500) being used for grabbing the completed battery cell lamination material.

5. The cell forming stack apparatus of claim 1, wherein, It further comprises a cutting device (600) arranged on the rack, the cutting device (600) being arranged above the lamination device (100).

6. A method of forming a cell stack, the method comprising: The battery cell lamination method is applied to the battery cell lamination device as claimed in claim 2, and the battery cell lamination method comprises the following steps: the feeding device (200) feeds the battery cell lamination material above the lamination device (100); the pulling device (300) grabs the leading end of the fed battery cell lamination material and moves it to the front of the lamination device (100), the leading end of the battery cell lamination material being the part of the separator in the battery cell lamination material; The feeding device (200) continues to feed the material, and the part of the battery cell stacking material with the electrode attached is sent out and falls into the stacking device (100). The pulling device (300) releases the first end of the battery cell stacking material, and the part of the battery cell stacking material with the electrode attached flattens the part of the battery cell stacking material with the separator and stacks it on top of the part of the battery cell stacking material with the separator. The feeding device (200) continues to feed, and the separator part and the electrode part in the battery cell stacking material are fed out alternately. When the electrode part in the battery cell stacking material is fed into the stacking device (100), the separator part in the previously fed battery cell stacking material is flattened and stacked on top of the separator part in the battery cell stacking material. The feeding device (200) continuously feeds the material until a set of cells is stacked.

7. The method of claim 6, wherein, "The feeding device (200) delivers the battery cell lamination material above the lamination device (100)" includes: the feeding device (200) is set at an angle and delivers the battery cell lamination material above the inclined lamination device (100) at a certain angle.

8. The method of claim 6, wherein, "When the portion of the battery cell laminating material with the electrode attached is fed into the laminating device (100)" includes: whenever the portion of the battery cell laminating material with the electrode attached enters the laminating device (100), the receiving plate (130) moves downward by one stroke.

9. The method of claim 6, 7 or 8, wherein the method further comprises: It also includes the following steps: After a set of battery cells is stacked, the second baffle (120) is lowered, and the material handling device (500) extends into the stacking device (100) to grab the stacked battery cells. The material handling device (500) grabs the battery cell stack and leaves the stacking device (100); the pulling device (300) grabs the battery cell stack material; and the cutting device (600) cuts off the connection between the battery cell stack material and the battery cell stack. The smoothing device (700) attaches the excess separator (810) to the cell stack and applies tape to the cell stack to complete the forming of the cell stack.

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