CN112164818A - Lithium battery cell forming equipment and method - Google Patents
Lithium battery cell forming equipment and method Download PDFInfo
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- CN112164818A CN112164818A CN202010675039.9A CN202010675039A CN112164818A CN 112164818 A CN112164818 A CN 112164818A CN 202010675039 A CN202010675039 A CN 202010675039A CN 112164818 A CN112164818 A CN 112164818A
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- lamination
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a lithium battery cell forming device and a lithium battery cell forming method. Lithium cell electricity core former is including the frame, to pasting the device, adsorption equipment, first material feeding unit, the lamination device, second material feeding unit and draw the device of getting, to pasting the device including first roll body, second roll body and first drive arrangement, adsorption equipment sets up on the roll body, two first material feeding unit direction of delivery's end corresponds with first roll body and second roll body respectively, the lamination device is including accomodating the chamber, second material feeding unit sets up in the top of pasting the device, and direction of delivery's end is just to accomodating the chamber, draw the device setting between second material feeding unit and lamination device. According to the lithium battery cell forming equipment disclosed by the invention, the equipment structure is simple, and the lithium battery cell can be formed efficiently. According to the lithium battery cell forming method, various steps in the method are carried out simultaneously, and the lithium battery cell can be formed efficiently.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a lithium battery cell forming device and method.
Background
Based on the development trend of lithium batteries, the battery core forming process plays an important role, and the positive plate, the isolating membrane and the negative plate are alternately stacked together to complete the forming of the battery core of the lithium battery. At present, the cell forming method mainly includes two types, namely a winding type lamination and a stacking type lamination, in a lamination mode. In the stacking lamination forming process, generally, a mechanical arm is used to respectively grab positive and negative electrode plates and an isolating film, and then the positive electrode plates, the isolating film, the negative electrode plates and the isolating film are stacked together alternately in the order to complete the lamination of the battery cell. However, the forming method has low efficiency, the reciprocating motion feeding of the manipulator and the correction of the position of the pole piece both require certain time, and the manipulator may cause the powder falling or damage of the pole piece when grabbing the pole piece, thereby affecting the quality of the formed product.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art. Therefore, the invention provides the lithium battery cell forming equipment which is simple in structure and can efficiently and stably form the lithium battery cell.
The invention also provides a forming method of the lithium battery cell.
According to the embodiment of the first aspect of the invention, the lithium battery cell forming equipment comprises: a frame; the device comprises a butting device and a driving device, wherein the butting device comprises a first roller body, a second roller body and a first driving device, the first roller body and the second roller body are arranged on a rack, roller centers are arranged on the same plane, and the first driving device is in driving connection with the first roller body and the second roller body; the adsorption device is arranged on the first roller body and the second roller body; the first feeding devices are provided with a plurality of first feeding devices, and the first feeding devices are used for conveying the positive plates or the negative plates to be close to the first roller body or the second roller body respectively; the lamination device comprises a containing cavity, and the containing cavity is used for laminating and containing the laminated battery cell; the second feeding device is used for leading the battery cell lamination raw material out of the space between the first roller body and the second roller body and conveying the battery cell lamination raw material to the lamination device, and the tail end of the second feeding device in the conveying direction is right opposite to the upper part of the accommodating cavity; and the pulling device is arranged on the rack and arranged between the lamination device and the second feeding device.
According to the lithium battery cell forming equipment provided by the embodiment of the invention, at least the following technical effects are achieved: the positive plate and the negative plate are respectively close to the first roller body and the second roller body under the conveying of different first feeding devices, then the positive plate or the negative plate close to the first roller body and the second roller body are adsorbed and transferred to the isolating membrane between the two rollers to form a battery core laminated raw material, the second feeding device conveys the battery core laminated raw material out of the upper part of the containing cavity while guiding the battery core laminated raw material out of the two rollers, after the battery core laminated raw material is conveyed out, the pulling device grabs the head end of the battery core laminated raw material, the second feeding device continues to feed, the part of the battery core laminated raw material adhered with the pole piece is conveyed out and then enters the containing cavity, and presses the part of the isolating membrane in the battery core laminated raw material conveyed out in the front part to the lower part, at the moment, the pulling device is released, the part of the battery core laminated raw material adhered with the pole piece overlaps the part of the isolating membrane in the battery core laminated raw material to the lower part, and the lamination of the first layer of, first material feeding unit lasts the pay-off, and the part of laminating the pole piece in the electric core lamination raw materials and the part of barrier film in the electric core lamination raw materials are sent out in turn to automatic completion lamination when entering into and accomodating the chamber, electric core lamination raw materials pile up several layers after, just accomplished the lamination of a set of lithium cell electric core. In lithium battery cell former, the transport of pole piece, transfer, attached, transport, the piling up of electric core lamination raw materials are all gone on simultaneously, make lithium battery cell can carry out the shaping high-efficiently, stably.
According to some embodiments of the invention, the apparatus further comprises a positioning device for positioning the pole piece adjacent to the first roller body or the second roller body.
According to some embodiments of the present invention, the facing device further includes a control device, the first roller and the second roller are movably disposed on the frame, and the control device is configured to adjust a distance and a pressure between the first roller and the second roller.
According to some embodiments of the invention, an included angle α is formed between the bottom surface of the receiving cavity and the horizontal plane, and the second feeding device comprises a feeding platform, and an included angle β is formed between the feeding platform and the bottom surface of the receiving cavity.
According to some embodiments of the present invention, the stacking device includes a first baffle, a second baffle, a material receiving plate, a second driving device, and a third driving device, the material receiving plate is disposed between the first baffle and the second baffle and mutually encloses the first baffle and the second baffle to form the receiving cavity, the second driving device is drivingly connected to the material receiving plate, and the third driving device is drivingly connected to the second baffle.
According to some embodiments of the invention, the wind power generation device further comprises a wind knife, and the wind knife is arranged on the frame.
According to some embodiments of the invention, the cutting device is disposed on the frame.
According to the second aspect of the invention, the lithium battery cell forming method comprises the following steps: conveying the positive plate and the negative plate through a first feeding device to enable the negative plate and the positive plate to be close to the first roller body and the second roller body respectively; the first roller body rotates and sucks up the negative pole piece close to the first roller body, and the second roller body rotates and sucks up the positive pole piece close to the second roller body; the first roller body and the second roller body respectively drive the negative plate and the positive plate to rotate, the negative plate and the positive plate are respectively pressed and attached to two sides of the isolating membrane between the two rollers to form a battery cell laminated raw material, and the battery cell laminated raw material is led out between the two rollers by the second feeding device; and the second feeding device feeds the battery core lamination raw materials into the lamination device to complete lamination.
The method for forming the lithium battery cell provided by the embodiment of the invention at least has the following technical effects: the procedures of positive and negative pole piece conveying, positive and negative pole piece positioning, positive and negative pole piece pasting, electric core lamination raw material conveying and electric core lamination raw material stacking are carried out simultaneously, a user only needs to preset a positive pole piece, a negative pole piece and an isolation film in the lithium battery electric core forming equipment, the forming of the lithium battery electric core can be continuously carried out, and the production efficiency is higher compared with the traditional lithium battery electric core forming method.
According to some embodiments of the present invention, the step of "the first roller body sucks up the negative electrode tab adjacent thereto while rotating, and the second roller body sucks up the positive electrode tab adjacent thereto while rotating" further includes the following steps: the first feeding device respectively feeds the negative plate and the positive plate to the positioning device; after the negative plate and the positive plate are conveyed to the positioning device, the negative plate and the positive plate move obliquely under the driving of the correcting body and contact with the stop blocks at the edge of the positioning device to complete positioning.
According to some embodiments of the present invention, the "second feeding device feeds the cell lamination raw material into the lamination device to complete lamination", including the following steps: the second feeding device sends out the battery core lamination raw materials above the lamination device; the pulling device grabs the head end of the sent out battery core laminated raw material and drives the battery core laminated raw material to move to the front of the laminating device, and the head end of the battery core laminated raw material is a part of an isolating membrane in the battery core laminated raw material; the second feeding device continues feeding, the part, attached with the pole piece, of the cell lamination raw material is sent out and falls into the lamination device, the pulling device loosens the head end of the cell lamination raw material, the part, attached with the pole piece, of the cell lamination raw material flattens the part, attached with the pole piece, of the isolation film in the cell lamination raw material and is overlapped above the part, attached with the pole piece, of the isolation film in the cell lamination raw material; the second feeding device continues feeding, the part of the isolating membrane in the battery cell lamination raw material and the part of the battery cell lamination raw material pasted with the pole piece are alternately sent out, and when the part of the battery cell lamination raw material pasted with the pole piece is sent into the lamination device, the part of the isolating membrane in the battery cell lamination raw material which is sent out before is leveled and is overlapped above the part of the isolating membrane in the battery cell lamination raw material; and continuously feeding by the second feeding device until the lamination of a group of battery cores is completed.
According to some embodiments of the invention, the "feeding out the cell lamination stock above the lamination device by the second feeding device" comprises: the second feeding device is obliquely arranged and sends out the battery core lamination raw materials above the obliquely arranged lamination device at a certain angle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a lithium battery cell forming apparatus according to an embodiment of the present invention;
FIG. 2 is a top view of a taping device in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a positioning device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another positioning device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a pulling device of a lithium battery cell forming apparatus according to an embodiment of the present invention during operation;
fig. 6 is a schematic structural diagram of a lithium battery cell forming apparatus according to an embodiment of the present invention during first lamination;
fig. 7 is a schematic structural diagram of an air knife of a lithium battery cell forming device according to an embodiment of the present invention during operation;
fig. 8 is a schematic structural diagram of a lithium battery cell forming device according to an embodiment of the present invention when final lamination is performed;
fig. 9 is a schematic structural diagram of a material taking device and a cutting device of a lithium battery cell forming device according to an embodiment of the invention when in operation;
fig. 10 is a schematic structural diagram of a smoothing device of a lithium battery cell forming apparatus according to an embodiment of the present invention during operation;
fig. 11 is a schematic structural view of a cell lamination stock according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a lithium battery cell stack according to an embodiment of the present invention.
Reference numerals:
the device comprises a pasting device 100, a first roller body 110, a second roller body 120, a first driving device 130, a control device 140, a first feeding device 200, a positioning device 300, a first stop block 310, a second stop block 320, a correction platform 330, a correction body 331, a lamination device 400, a first stop plate 410, a second stop plate 420, a material receiving plate 430, a second driving device 440, a third driving device 450, a second feeding device 500, a pulling device 600, an air knife 700, a material taking device 810, a flattening device 820, a cutting device 900, a lithium battery cell lamination 1000, an isolation film 1010, a positive plate 1020 and a negative plate 1030.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element 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.
In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
A lithium battery cell forming apparatus according to an embodiment of the present invention is described below with reference to fig. 1 to 12.
For example, as shown in fig. 1 and fig. 2, a lithium battery cell forming apparatus according to an embodiment of the present invention includes: a frame; the opposite pasting device 100, the opposite pasting device 100 comprises a first roller body 110, a second roller body 120 and a first driving device 130, the first roller body 110 and the second roller body 120 are both arranged on the frame, the roller centers are arranged on the same plane, and the first driving device 130 is in driving connection with the first roller body 110 and the second roller body 120; the adsorption devices are arranged on the first roller body 110 and the second roller body 120; the first feeding devices 200 are arranged, the first feeding devices 200 are provided with a plurality of feeding devices 200, and the first feeding devices 200 are used for conveying the positive pole pieces 1020 or the negative pole pieces 1030 to be close to the first roller body 110 or the second roller body 120 respectively; the lamination device 400 comprises a containing cavity, and the containing cavity is used for laminating and containing the laminated battery cell; the second feeding device 500 is used for leading the battery cell lamination raw material out of the space between the first roller body 110 and the second roller body 120 and conveying the battery cell lamination raw material to the lamination device 400, and the tail end of the second feeding device 500 in the conveying direction is right opposite to the upper part of the accommodating cavity; the drawing device 600 is arranged on the rack, and the drawing device 600 is arranged between the lamination device 400 and the second feeding device 500.
As shown in fig. 1 and fig. 2, the lithium battery cell forming apparatus includes a rack, an attaching device 100, an adsorbing device, a first feeding device 200, a laminating device 400, a second feeding device 500, and a pulling device 600, wherein the attaching device 100, the first feeding device 200, the laminating device 400, and the second feeding device 500 are all disposed on the rack, the attaching device 100 includes a first roller 110, a second roller 120, and a first driving device 130, the roller centers of the first roller 110 and the second roller 120 are disposed on the same horizontal plane, the adsorbing device is disposed on the first roller 110 and the second roller 120, the sizes of the first roller 110 and the second roller 120 are determined according to the size of a pole piece to be transferred, a user can select the sizes of the first roller 110 and the second roller 120 according to actual production needs, the first roller 110 and the second roller 120 rotate under the effect of the first driving device 130 and adsorb the pole piece and drive the pole piece to rotate together in the rotating process, the first roller 110 rotates counterclockwise, and the second roller 120 rotates clockwise. It should be noted that the direction in which the first roller body 110 and the second roller body 120 rotate is not limited to the direction shown in the figure, and the user can set the direction in which the roller bodies rotate according to the feeding direction in actual production. The roller bodies are driven by the first driving device 130 through a single motor, a dual-motor synchronous drive and a dual-motor asynchronous drive, a user can select a mode of driving the first roller body 110 and the second roller body 120 according to actual production needs, and the adsorption device can be a negative pressure adsorption device or an electrostatic adsorption device, but is not limited to one of the two devices. When the adsorption device is a negative pressure adsorption device, a plurality of tiny through holes are formed in the first roller body 110 and the second roller body 120, a vacuum pump is arranged on the roller body, the vacuum pump works to enable the internal air pressure of the roller body to be smaller than the external air pressure, and when the pole piece moves to the position right below the roller body, the pole piece is adsorbed by the through holes in the roller body and moves together with the roller body; when the adsorption device is an electrostatic adsorption device, the first roller body 110 and the second roller body 120 are made of an insulating material, before use, the electrostatic adsorption device generates static electricity on the surfaces of the first roller body 110 and the second roller body 120, and when the pole piece is close to the roller body, the pole piece is adsorbed on the surface of the first roller body 110 or the surface of the second roller body 120 under the action of the static electricity. The first roller body 110 and the second roller body 120 are tightly arranged, and gaps for the isolating film 1010, the positive plate 1020 and the negative plate 1030 to pass through are only left between the two rollers; the first feeding devices 200 are provided with two feeding devices, the tail ends of the feeding directions of the two feeding devices are respectively opposite to the lower parts of the first roller body 110 and the second roller body 120, the positive pole piece 1020 and the negative pole piece 1030 respectively move to the lower parts of the first roller body 110 and the second roller body 120 under the feeding action of the two feeding devices 200, and the feeding devices 200 can be conveyor belts or conveying rollers, but are not limited to the conveyor belts or the conveying rollers; the second feeding device 500 is disposed above the first roller body 110 and the second roller body 120, and is used for leading the formed cell lamination raw material out of the laminating device 100, the end of the conveying direction of the second feeding device 500 is right above the lamination device 400, and the second feeding device 500 may be a conveyor belt or a conveying roller, but is not limited to one of the conveyor belt and the conveying roller; the lamination device 400 is arranged behind the opposite sticking device 100, the size of a containing cavity in the lamination device 400 is matched with the size of the positive and negative electrode plate groups, and the part, adhered with the electrode plate, in the battery core lamination raw material can automatically complete positioning when entering the containing cavity; the pulling device 600 is disposed between the first feeding device 200 and the lamination device 400, and is configured to grasp the cell lamination raw material before lamination and after lamination, and the manner in which the pulling device 600 grasps the cell lamination raw material may be an electrostatic adsorption manner or a vacuum adsorption manner, but is not limited to one of the two manners.
According to the lithium battery cell forming equipment provided by the embodiment of the invention, the process of forming the lithium battery cell is as follows: starting the lithium battery cell forming equipment, wherein each device in the lithium battery cell forming equipment starts to work, a user firstly penetrates the isolating membrane 1010 between the first roller body 110 and the second roller body 120 to be connected with the second feeding device 500, then respectively puts the positive plate 1020 and the negative plate 1030 into the two first feeding devices 200, the positive plate 1020 and the negative plate 1030 respectively reach the lower parts of the first roller body 110 and the second roller body 120 under the conveying of the first feeding device 200, then the positive plate 1020 and the negative plate 1030 are respectively adsorbed by the first roller body 110 and the second roller body 120 under the action of the adsorbing devices, the first roller body 110 and the second roller body 120 drive the positive plate 1020 and the negative plate 1030 to rotate together, when the positive plate 1020 and the negative plate 1030 rotate between the two rollers along with the rotation of the roller bodies, the positive plate 1020 and the negative plate 1030 are arranged on the isolating membrane 1010 continuously passing between the two rollers to form a battery cell laminated raw material, and the formed battery cell laminated raw material leaves between the two rollers under the traction of the second feeding device 500, second material feeding unit 500 is when accomodating chamber top and sending out with electric core lamination raw materials head end, draw the head end that device 600 can snatch electric core lamination raw materials, second material feeding unit 500 continues the pay-off this moment, when the part that pastes the pole piece in the electric core lamination raw materials is sent out, draw and get device 600 and loosen, the part that pastes the pole piece in the electric core lamination raw materials can be levelled and folded in the below with the part of barrier film in the electric core lamination raw materials, second material feeding unit 500 continues the pay-off, the part that pastes the pole piece in the electric core lamination raw materials and the part of barrier film in the electric core lamination raw materials are sent out in turn, and automatic completion piles up when entering into lamination device 400, electric core lamination raw materials pile up the lamination of lithium cell core just to accomplish after several layers. Because each procedure in the equipment is carried out simultaneously, the forming efficiency of the lithium battery cell is greatly improved; and the battery cell is when the lamination, accomodates the chamber and also can fix a position pole piece group, has guaranteed effectively the pole piece to paste with the accurate nature of lamination time, promoted lithium cell battery cell's product quality.
In some embodiments of the present invention, a positioning device 300 is further included, and the positioning device 300 is used to position the pole piece near the first roller body 110 or the second roller body 120. For example, as shown in fig. 3 and 4, two positioning devices 300 are provided, which are respectively disposed below the first roller body 110 and the second roller body 120, and the ends of the two first feeding devices 200 in the conveying direction are respectively connected to the two positioning devices 300. After the pole pieces are conveyed to the positioning device 300 by the first feeding device 200, the pole pieces are adsorbed by the roller body after the positioning is completed on the positioning device 300. The positioning device 300 comprises a stop block and a correction platform 330, wherein the correction platform 330 is provided with a plurality of correction bodies 331, the correction bodies 331 and the conveying direction of the first feeding device 200 are inclined at a certain angle, and the stop block is arranged at the edge of the positioning device 300. For example, as shown in fig. 4 and 5, a tab is provided at one end of the positive and negative electrode sheets, and the inclination direction of the corrector 331 is determined depending on the direction of the tab: when the positive and negative electrode plates are attached to the isolating film 1010 and the tabs thereof are arranged at the same end, the inclination directions of the corrector 331 are opposite; when the positive and negative electrode plates are attached to the isolation film 1010 and the tabs are disposed at different ends, the inclination directions of the correction bodies 331 are the same. The oblique movement of the pole piece on the correction body 311 can be orthogonally decomposed into two movements which are directed to a pair of adjacent sides of the positioning device 300 and perpendicular to each other, and the two adjacent sides of the positioning device 300, which are directed by the orthogonally decomposed movements, are respectively provided with a first stopper 310 and a second stopper 320. After being transferred to the correction platform 330, the pole pieces are driven by the correction body 331 to approach the first stop 310 and the second stop 320. When the pole pieces contact the first stop 310 and the second stop 320, positioning in the positioning device 300 is completed. The angle of the corrector 331 is required to be greater than 0 ° and smaller than 90 °, so as to ensure that the pole piece can move obliquely under the conveying action of the corrector 331. It should be noted that the above is only one embodiment of the positioning device 300, and the positioning device 300 may also be a robot positioning mechanism, a friction roller positioning mechanism, a friction wheel positioning mechanism, an air-float positioning mechanism, or a CCD vision detection positioning mechanism, but is not limited to one of the five. Through setting up positioner 300 in lithium battery cell former, the pole piece is before pasting, and positioner 300 can advance to fix a position the pole piece, and the pole piece that only fixes a position and accomplish just can be adsorbed by the roll body and shift and press the subsides, has guaranteed the position precision of pole piece when pasting, has improved lithium battery cell's shaping quality effectively.
In some embodiments of the present invention, the facing device 100 further includes a control device 140, the first roller 110 and the second roller 120 are movably disposed on the frame, and the control device 140 is configured to adjust the distance and the pressure between the first roller 110 and the second roller 120. For example, as shown in fig. 2, the first roller body 110 and the second roller body 120 are movably disposed on the frame, and the control device 400 is disposed on both sides of the first roller body 110 and the second roller body 120. When the positive and negative electrode plates with different specifications need to be attached in actual production, a user can adjust the distance between the two rollers and the pressure through the control device 140, so that the positive and negative electrode plates are smoothly attached.
In some embodiments of the present invention, an included angle α is formed between the bottom surface of the receiving cavity and the horizontal plane, and the second feeding device 500 includes a feeding platform, and an included angle β is formed between the feeding platform and the bottom surface of the receiving cavity. For example, as shown in fig. 1, when the second feeding device 500 and the lamination device 400 are horizontally arranged, the molding quality of the cell lamination is low, and in the case that the size of the pole piece group is small, the part of the cell lamination raw material to which the pole piece is attached may not smoothly level the part of the separator in the previously sent cell lamination raw material when the cell lamination raw material is sent out. At this moment, through setting up second material feeding unit 500 and lamination device 400 slope certain angle, can promote the shaping quality of electric core lamination effectively, specifically, the part that pastes the pole piece in the electric core lamination raw materials is sent out with certain angle earlier, one end is deflected certain angle after receiving the chamber and just accomplished a layer lamination, second material feeding unit 500 and lamination device 400 that set up more horizontally, second material feeding unit 500 and lamination device 400 that the slope set up are when carrying out the pay-off lamination to electric core lamination raw materials, the part that pastes the pole piece in the electric core lamination raw materials need the angle of deflection littleer in carrying the lamination process, the lamination process is more steady. When the lithium battery forming lamination equipment needs to laminate the battery core lamination raw materials with different specifications, a user can adjust the angles of alpha and beta to adapt to the production requirements of different battery core lamination raw materials.
In some embodiments of the present invention, the stacking device 400 includes a first blocking plate 410, a second blocking plate 420, a material receiving plate 430, and a second driving device 440, the material receiving plate 430 is disposed between the first blocking plate 410 and the second blocking plate 420, the first blocking plate 410 and the second blocking plate 420 enclose each other to form a receiving cavity, and the second driving device 440 is drivingly connected to the material receiving plate 430. For example, as shown in fig. 1, fig. 5, fig. 6, fig. 7 and fig. 8, the first baffle 410, the second baffle 420 and the material receiving plate 430 enclose each other to form a receiving cavity, and the size of the receiving cavity matches with the size of the pole piece group, after a portion of the cell lamination raw material to which the pole piece is attached enters the receiving cavity from the feeding device, the first baffle 410 and the second baffle 420 can play a role in positioning the portion, so that the portion cannot be displaced in the receiving cavity. The second driving device 440 is a screw transmission mechanism, which includes a motor and a screw rod, and the screw rod is connected to the material receiving plate 430. When the motor drives the screw rod to rotate, the material receiving plate 430 ascends or descends according to the rotation direction of the screw rod. It should be noted that the screw transmission mechanism is only one embodiment of the second driving device 440, and the embodiment of the second driving device 440 is not limited to this. The first baffle plate 410, the second baffle plate 420 and the material receiving plate 430 are arranged in the lamination device 400 and are mutually enclosed to form a containing cavity matched with the size of the pole piece group, so that the part, attached with the pole piece, of the battery cell lamination raw material can be positioned, the lamination can be accurately carried out when the part falls into the lamination device 400 every time, larger position deviation can not occur, and the product quality of a battery cell lamination finished product is effectively improved; through set up the second drive arrangement 440 with receiving board 430 drive connection in lamination device 400, whenever carry out the lamination, second drive arrangement 440 just can drive receiving board 430 and descend a section stroke, and the part that pastes the pole piece in the battery cell lamination raw materials all can be on same height when falling into in lamination device 400 at every turn, makes the battery cell lamination process more steady.
In a further embodiment of the present invention, the lamination device 400 further comprises a third driving device 450, and the third driving device 450 is in driving connection with the second baffle 420. For example, as shown in fig. 1 and 9, the third driving device 450 is a cylinder, the second baffle 420 is connected to an output end of the cylinder, and the second baffle 420 can reciprocate up and down under the driving of the cylinder. It is noted that the air cylinder is only one embodiment of the third driving device 450, and the embodiment of the third driving device 450 is not limited thereto. Through set up the third drive arrangement 450 with second baffle 420 drive connection in lamination device 400, after the electric core lamination is accomplished, third drive arrangement 450 drive second baffle 420 descends, and the user just can take out the electric core lamination after the shaping easily from the side of lamination device 400, and after the electric core lamination was taken out, third drive arrangement 450 redriven second baffle 420 rose, and lithium cell electricity core forming equipment alright continue to carry out the lamination to next electric core.
In some embodiments of the present invention, an air knife 700 is further included, and the air knife 700 is disposed on the rack, where the air outlet direction of the air knife 700 is directed between the lamination device 400 and the second feeding device 500. For example, as shown in fig. 1 and 7, the air knife 700 is disposed between the second feeding device 500 and the lamination device 400, and is disposed opposite to the drawing device 600. When the second feeding device 500 has a fast feeding speed and a high cell forming speed, the parts of the separator in the cell lamination raw material may be stacked together during being fed to the lamination device 400, thereby affecting the product quality. At this time, by providing the air knife 700 in the lithium battery cell forming lamination device, the motion state of the part of the isolation film in the cell lamination raw material can be controlled. Specifically, when air knife 700 works, the part of the isolating membrane in the cell lamination raw material can be blown to the direction in which the pulling assembly is arranged, and when the part attached with the pole piece in the cell lamination raw material is sent out, the part of the isolating membrane in the cell lamination raw material can be pulled flat and stacked below. By arranging the air knife 700 in the lithium battery cell forming lamination equipment, the part of the isolating membrane in the cell lamination raw material can be effectively prevented from being stacked in the lamination process, and the production quality of products is improved.
In some embodiments of the present invention, the lithium battery cell stacking device further includes a material taking device 810, the material taking device 810 is disposed on the rack, and the material taking device 810 is configured to grasp the lithium battery cell stacking sheet 1000 after the stacking sheet is completed. For example, as shown in fig. 1 and 9, the material taking device 810 is disposed behind the second baffle 420, and the material taking device 810 may be a robot, but is not limited thereto. After second baffle 420 descends, extracting device 810 alright in order to stretch into lamination device 400 and take out lithium cell electric core lamination 1000, through set up extracting device 810 in lithium cell electric core former, just can take out the lithium cell electric core lamination 1000 that the lamination was accomplished through extracting device 810 fast after the electric core lamination was accomplished, improved lithium cell electric core lamination 1000's production efficiency effectively.
In some embodiments of the present invention, a smoothing device 820 is further included, the smoothing device 820 is disposed on the frame, and the smoothing device 820 is used for attaching the redundant isolation film 1010 on the lithium battery cell stack 1000. For example, as shown in fig. 1 and 10, the smoothing device 820 is disposed below the extracting device 810. After the user separates the lithium battery cell lamination 1000 from the cell lamination raw material, the smoothing device 820 attaches the redundant isolating membrane 1010 on the surface of the lithium battery cell lamination 1000, thereby effectively improving the production efficiency and the production quality of the lithium battery cell lamination 1000.
In some embodiments of the present invention, a cutting device 900 is also included, the cutting device 900 being disposed on the frame, the cutting device 900 being disposed above the lamination device 400. For example, as shown in fig. 1 and 9, the cutting device 900 is disposed above the lamination device 400. When the cell lamination raw material is long enough and can stack out a plurality of groups of lithium battery cell laminations 1000, each time a group of lithium battery cell laminations 1000 is stacked, the cell lamination raw material needs to be cut to perform the lamination of the next group of lithium battery cells. Through set up cutting device 900 in lithium battery electricity core former, every completion a set of lithium battery electricity core lamination 1000 after, cutting device 900 can carry out automatic cutting in order to separate lithium battery electricity core lamination 1000 to electric core lamination raw materials, has improved lithium battery electricity core former's production efficiency effectively. Specifically, after a group of lithium battery cell laminations 1000 is completed, the second baffle plate 420 is lowered first, the material taking device 810 picks up the lithium battery cell laminations 1000 and moves backward, the second feeding device 500 continues to send out the part of the isolation film in the cell lamination raw material, the pulling device 600 moves the part of the isolation film in the cell lamination raw material, the cutting device 900 moves downward to cut off the cell lamination raw material, so that the lithium battery cell laminations 1000 are separated from the cell lamination raw material, after the cutting is completed, the cutting device 900, the material receiving plate 430 and the second baffle plate 320 reset, the pulling device 600 picks up the cell lamination raw material and resets, and preparation is made for the next group of lithium battery cell laminations 1000. The cutting method of the cutting device 900 includes thermal cutting, laser cutting, and mechanical cutting, but is not limited to one of the three methods.
According to the second aspect of the invention, the lithium battery cell forming method comprises the following steps: conveying the positive plate 1020 and the negative plate 1030 through the first feeding device 200, so that the negative plate 1030 and the positive plate 1020 are close to the first roller body 110 and the second roller body 120 respectively; the first roller body 110 sucks up the negative electrode sheet 1030 close thereto while rotating, and the second roller body 120 sucks up the positive electrode sheet 1020 close thereto while rotating; the first roller body 110 and the second roller body 120 respectively drive the negative plate 1030 and the positive plate 1020 to rotate, the negative plate 1020 and the positive plate 1030 are respectively pressed and attached to two sides of the isolating membrane 1010 between the two rollers to form a battery cell laminated raw material, and the second feeding device 500 leads the battery cell laminated raw material out of the two rollers; the second feeding device 500 feeds the cell lamination raw material into the lamination device 400 to complete lamination.
By the forming method, the forming efficiency and quality of the lithium battery cell are effectively improved. Specifically, the processes of positive and negative pole piece conveying, positive and negative pole piece attaching, electric core lamination raw material conveying and electric core lamination raw material stacking are carried out simultaneously, a user only needs to preset positive and negative pole pieces and an isolating film 1010 in lithium battery electric core forming equipment, the forming of a lithium battery electric core can be continuously carried out, and the production efficiency is higher compared with that of traditional lithium battery electric core forming equipment.
According to the method for forming a lithium battery cell in the second aspect of the present invention, the step of rotating the first roller 110 and sucking up the negative pole piece 1030 adjacent thereto, and the step of rotating the second roller 120 and sucking up the positive pole piece 1020 adjacent thereto further comprises the following steps: the first feeding device 200 respectively feeds the negative plate 1030 and the positive plate 1020 to the positioning device 300; after the negative electrode plate 1030 and the positive electrode plate 1020 are conveyed to the positioning device 300, they are driven by the correction body 331 to move obliquely and contact with the stoppers at the edge of the positioning device 300 to complete the positioning.
By the above forming method, before the pole pieces are adsorbed by the roller body, the positioning device 300 may correct the positions of the pole pieces on the positioning device, and the first roller body 110 or the second roller body 120 adsorbs and transfers the pole pieces with corrected positions. The correction process is as follows: when the pole piece reaches the positioning device 300 and is driven by the correction body 331 to move obliquely, the positioning is completed when the pole piece is simultaneously contacted with the first stop 310 and the second stop 320 at the edge of the positioning device 300. The correction procedure is set in the opposite pasting method, so that the feeding accuracy of the positive and negative pole pieces can be ensured, and the positioning device 300 is arranged at the tail end of the first feeding device 200, so that correction and feeding are carried out simultaneously, and the opposite pasting efficiency of the positive and negative pole pieces of the battery core is improved.
According to the method for forming the lithium battery cell in the second aspect of the present invention, the "second feeding device 500 feeds the cell lamination raw material into the lamination device 400 to complete lamination", including the following steps: the second feeding device 500 sends out the cell lamination raw material above the lamination device 400; the pulling device 600 grabs the head end of the sent out cell lamination raw material and drives the head end to move to the front of the lamination device 400, wherein the head end of the cell lamination raw material is a part of an isolation film in the cell lamination raw material; the second feeding device 500 continues feeding, the part of the cell lamination raw material to which the pole piece is attached is sent out and falls into the lamination device 400, the pulling device 600 loosens the head end of the cell lamination raw material, and the part of the cell lamination raw material to which the pole piece is attached flattens the part of the isolation film in the cell lamination raw material and is overlapped above the part of the isolation film in the cell lamination raw material; the second feeding device 500 continues feeding, the part of the isolation film in the cell lamination raw material and the part of the cell lamination raw material pasted with the pole piece are alternately sent out, and when the part of the cell lamination raw material pasted with the pole piece is sent into the lamination device 400, the part of the isolation film in the cell lamination raw material which is sent out before is leveled and is overlapped above the part of the isolation film in the cell lamination raw material; the second feeding device 500 continues feeding until the lamination of a group of cells is completed.
By the forming method, automatic lamination of the battery cell can be efficiently and accurately completed. Through setting up second material feeding unit 500 and lamination device 400 to and setting up drawing between the two and get device 600, second material feeding unit 500 sends out the back with electric core lamination raw materials, and electric core lamination raw materials just can fall into and accomodate the automatic lamination of accomplishing electric core in the chamber, and pay-off process and lamination process go on simultaneously, make electric core shaping lamination go on high-efficiently.
According to the lithium battery cell forming method of the embodiment of the second aspect of the present invention, the "second feeding device 500 feeds out the cell lamination raw material above the lamination device 400" includes: the second feeding device 500 is disposed obliquely, and feeds out the cell lamination raw material above the obliquely disposed lamination device 400 at a certain angle.
Through the forming method, the second feeding device 500 and the laminating device 400 are obliquely arranged, so that the battery cell laminating raw materials can be sent out at a certain angle and enter the containing cavity to automatically complete lamination, the angle of deflection of the battery cell laminating raw materials in the feeding and laminating process is reduced, and the forming quality of the lithium battery cell lamination 1000 is improved.
A lithium battery cell forming apparatus and a forming method thereof according to an embodiment of the present invention are described in detail with reference to fig. 1 to 12 as a specific embodiment. It is to be understood that the following description is only exemplary, and not a specific limitation of the invention.
As shown in fig. 1 to 12, the lithium battery cell forming apparatus includes a frame, an attaching device 100, an adsorbing device, a positioning device 300, a laminating device 400, a first feeding device 200, a second feeding device 500, a pulling device 600, an air knife 700, a material taking device 810, a smoothing device 820, and a cutting device 900. The frame is used as a framework in the lithium battery cell forming equipment, each device in the lithium battery cell forming equipment is arranged on the frame, the facing device 100 comprises a first roller body 110, a second roller body 120 and a first driving device 130, the first roller body 110 and the second roller body 120 are arranged side by side, only a gap for an isolating film 1010 and a positive pole piece and a negative pole piece to pass through is reserved in the middle, the first roller body 110 and the second roller body 120 are in driving connection with the first driving device 130, and the adsorption device is arranged on the first roller body 110 and the second roller body 120; the two positioning devices 300 are respectively arranged below the first roller body 110 and the second roller body 120, each positioning device 300 comprises a first stop block 310, a second stop block 320 and a correction platform 330, the first stop blocks 310 and the second stop blocks 320 are arranged at the edges of the positioning devices 300, the correction platform 330 is provided with a plurality of correction bodies 331 inclining to the conveying direction of the first feeding device 200, the number of the first feeding devices 200 is two, and the tail ends of the two first feeding devices 200 in the conveying direction are respectively connected with the two positioning devices 300; the lamination device 400 comprises a first baffle 410, a second baffle 420, a material receiving plate 430, a second driving device 440 and a third driving device 450, wherein the first baffle 410, the second baffle 420 and the material receiving plate 430 are mutually enclosed to form a receiving cavity, the bottom surface of the receiving cavity and the horizontal plane form an included angle alpha, the second driving device 440 is in driving connection with the material receiving plate 430, and the third driving device 450 is in driving connection with the second baffle 420; the second feeding device 500 is arranged above the laminating device 400, the tail end of the second feeding device 500 in the conveying direction is right opposite to the upper part of the containing cavity, and an included angle beta is formed between a feeding platform of the second feeding device 500 and the bottom of the containing cavity; the pulling device 600 is arranged between the first feeding device 200 and the lamination device 400; the air knife 700 is arranged between the first feeding device 200 and the lamination device 400 and is opposite to the pulling device 600; the cutting device 900 is disposed above the lamination device 400; the extracting apparatus 810 and the smoothing apparatus 820 are disposed behind the lamination apparatus 400.
The method for forming the lithium battery cell comprises the following steps: the user sets up positive plate 1020 and negative pole piece 1030 respectively on two first material feeding unit 200 earlier, first material feeding unit 200 carries positive plate 1020 and negative pole piece 1030 respectively on corresponding positioner 300, positive and negative pole piece enters into and moves to the slant under the transport effect of correction body 331 after correcting the platform 330, just accomplish the location with the first dog 310 and the second dog 320 contact at positioner 300 edge, first roll body 110 and second roll body 120 adsorb the pole piece that the location was accomplished under the effect of adsorption equipment, and drive its rotation jointly, when positive plate 1020 and negative pole piece 1030 rotated to between the two rollers along with the roll body, just pressed and pasted on barrier film 1010 and formed electric core lamination raw materials, electric core lamination raw materials are drawn forth between first roll body 110 and second roll body 120 under the traction of second material feeding unit 500. When the second feeding device 500 sends out the head end of the cell lamination raw material, the pulling device 600 moves and grabs the head end of the cell lamination raw material, then the head end of the cell lamination raw material is pulled behind the first baffle 410, the second feeding device 500 continues feeding, the part, attached with the pole piece, of the cell lamination raw material is sent out at a certain angle and enters the accommodating cavity, when the part, attached with the pole piece, of the cell lamination raw material enters the accommodating cavity, the part, attached with the pole piece, of the isolation film in the cell lamination raw material which is sent out in the front is pulled flat and pressed below, at the moment, the pulling device 600 releases the grabbing, the part, attached with the pole piece, of the cell lamination raw material can overlap the part, attached with the pole piece, of the isolation film in the cell lamination raw material below, and the first lamination of the lithium battery cell is completed; the second feeding device 500 continuously feeds materials, the part of the cell lamination raw material adhered with the pole piece and the part of the isolation film in the cell lamination raw material are alternately sent out, when the part of the isolation film in the cell lamination raw material is sent out, the air knife 700 works to enable the part of the isolation film in the cell lamination raw material to have a tendency of moving towards the direction of the pulling device 600, the part of the isolation film in the cell lamination raw material is prevented from being stacked together, the part of the isolation film in the cell lamination raw material adhered with the pole piece can automatically fall into the accommodating cavity when being sent out, the part of the isolation film in the cell lamination raw material which is sent out in the front can be pulled flat and stacked below the accommodating cavity, the cell lamination raw material is laminated once every time in the accommodating cavity, the receiving plate 430 can descend for a stroke under the driving of the second driving device 440, and after the isoelectric cell lamination raw material is stacked for a plurality of layers, the lamination of a group of lithium battery. At this time, the second baffle 420 descends under the driving of the third driving device 450, the material taking device 810 extends into the lamination device 400 to grab the lithium battery cell lamination 1000, the pulling device 600 sucks the part of the isolation film in the cell lamination raw material, and the cutting device 900 descends to cut off the connection between the cell lamination raw material and the lithium battery cell lamination 1000. After the connection is cut off, the material taking device 810 takes out the lithium battery cell lamination 1000, and the smoothing device 820 attaches the redundant isolating films 1010 on the surface of the lithium battery cell lamination 1000 to complete the formation of the lithium battery cell. After the lithium battery cell is taken out, the pulling device 600, the cutting device 900, the smoothing device 820 and the material taking device 810 are all reset, and preparation is made for the next forming of the lithium battery cell.
According to the lithium battery cell forming equipment provided by the embodiment of the invention, at least some effects can be achieved, and the positioning device 300 can correct the position of the positive and negative pole pieces before the positive and negative pole pieces are attached to each other, so that the quality of the cell lamination raw material is improved. When the battery core lamination raw material enters the storage cavity to be laminated, the storage cavity can position the part, pasted with the pole piece, of the battery core lamination raw material, so that the lamination precision of the battery core lamination raw material is guaranteed, and the quality of lithium battery core forming is effectively improved. In the lamination process, the operation of the air knife 700 makes the part of the isolating membrane in the cell lamination raw material have a tendency of moving towards the pulling device 600, so that the problem that the forming quality of the lithium battery cell is influenced when the parts of the isolating membrane in the cell lamination raw material are stacked together during the high-speed lamination of the lithium battery cell is avoided. Every time lamination is carried out, the material receiving plate 430 is driven by the second driving device 440 to descend by a stroke, the part, attached with the pole piece, of the battery core lamination raw material is located at the same height when entering the containing cavity, and stable operation of the lamination process is guaranteed. After the lamination is completed, the second baffle 420 is driven by the third driving device 450 to descend, the pulling device 600, the cutting device 900, the material taking device 810 and the smoothing device 820 act in a coordinated manner, the lithium battery cell lamination 1000 is taken out, meanwhile, the connection between the lithium battery cell lamination and the battery cell lamination raw material is cut off, the redundant isolation film 1010 is attached to the surface of the lithium battery cell, and the forming quality of the lithium battery cell is improved. All procedures in the lithium battery core forming equipment are carried out simultaneously so as to realize the high-efficiency forming of the lithium battery core.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A lithium battery cell forming device, comprising:
a frame;
the opposite pasting device (100) comprises a first roller body (110), a second roller body (120) and a first driving device (130), wherein the first roller body (110) and the second roller body (120) are arranged on a rack, roller centers are arranged on the same plane, and the first driving device (130) is in driving connection with the first roller body (110) and the second roller body (120);
an adsorption device disposed on the first roller body (110) and the second roller body (120);
the first feeding device (200) is provided with a plurality of first feeding devices (200), and the first feeding devices (200) are used for conveying positive plates (1020) or negative plates (1030) to be close to the first roller body (110) or the second roller body (120) respectively;
the lamination device (400), wherein the lamination device (400) comprises a receiving cavity, and the receiving cavity is used for laminating and receiving the laminated battery core;
the second feeding device (500) is used for leading the cell lamination raw materials out of the space between the first roller body (110) and the second roller body (120) and conveying the cell lamination raw materials to the lamination device (400), and the tail end of the conveying direction of the second feeding device (500) is right opposite to the upper part of the accommodating cavity;
the drawing device (600), the drawing device (600) is arranged on the rack, and the drawing device (600) is arranged between the lamination device (400) and the second feeding device (500).
2. The lithium battery cell forming apparatus of claim 1, further comprising a positioning device (300), wherein the positioning device (300) is configured to position the pole piece adjacent to the first roller (110) or the second roller (120).
3. The lithium battery cell forming apparatus according to claim 1, wherein the pasting device (100) further includes a control device (140), the first roller (110) and the second roller (120) are movably disposed on the frame, and the control device (140) is configured to adjust a distance and a pressure between the first roller (110) and the second roller (120).
4. The lithium battery cell forming device of claim 1, wherein an included angle α is formed between the bottom surface of the receiving cavity and a horizontal plane, and the second feeding device (500) comprises a feeding platform, and an included angle β is formed between the feeding platform and the bottom surface of the receiving cavity.
5. The lithium battery cell forming apparatus of claim 1, wherein the lamination device (400) includes a first baffle (410), a second baffle (420), a material receiving plate (430), a second driving device (440), and a third driving device (450), the material receiving plate (430) is disposed between the first baffle (410) and the second baffle (420), and surrounds the first baffle (410) and the second baffle (420) to form the receiving cavity, the second driving device (440) is in driving connection with the material receiving plate (430), and the third driving device (450) is in driving connection with the second baffle (420).
6. The lithium battery cell forming device according to claim 1, further comprising an air knife (700), wherein the air knife (700) is disposed on the frame, and an air outlet direction of the air knife (700) is directed between the lamination device (400) and the second feeding device (500).
7. The lithium battery cell forming apparatus of claim 1, further comprising a cutting device (900), wherein the cutting device (900) is disposed on the frame, and the cutting device (900) is disposed above the stacking device (400).
8. A method for forming a lithium battery cell is characterized by comprising the following steps:
conveying the positive plate (1020) and the negative plate (1030) through a first feeding device (200) to enable the negative plate (1030) and the positive plate (1020) to be close to the first roller body (110) and the second roller body (120) respectively;
the first roller body (110) sucks up the negative pole piece (1030) close to the first roller body while rotating, and the second roller body (120) sucks up the positive pole piece (1020) close to the second roller body while rotating;
the first roller body (110) and the second roller body (120) respectively drive the negative plate (1030) and the positive plate (1020) to rotate, the negative plate (1020) and the positive plate (1030) are respectively pressed and attached to two sides of the isolating film (1010) between the two rollers to form a battery cell lamination raw material, and the battery cell lamination raw material is led out between the two rollers by the second feeding device (500);
and the second feeding device (500) feeds the cell lamination raw materials into the lamination device (400) to complete lamination.
9. The lithium battery cell forming method of claim 8, wherein the step of rotating the first roller body (110) while sucking up the negative electrode tab (1030) adjacent thereto and rotating the second roller body (120) while sucking up the positive electrode tab (1020) adjacent thereto further comprises the steps of:
the first feeding device (200) respectively feeds the negative plate (1030) and the positive plate (1020) onto the positioning device (300);
after the negative electrode plate (1030) and the positive electrode plate (1020) are conveyed to the positioning device (300), the negative electrode plate and the positive electrode plate are driven by the correction body (331) to move obliquely and contact with a stop block at the edge of the positioning device (300) to complete positioning.
10. The lithium battery cell forming method of claim 8, wherein the step of feeding the cell lamination raw material into the lamination device (400) by the second feeding device (500) to complete lamination comprises the following steps:
the second feeding device (500) sends out the cell lamination raw materials above the lamination device (400);
the pulling device (600) grabs the head end of the sent out battery core lamination raw material and drives the battery core lamination raw material to move to the front of the lamination device (400), and the head end of the battery core lamination raw material is a part of an isolation film in the battery core lamination raw material;
the second feeding device (500) continues feeding, the part, attached with the pole piece, of the cell lamination raw material is sent out and falls into the lamination device (400), the pulling device (600) loosens the head end of the cell lamination raw material, and the part, attached with the pole piece, of the cell lamination raw material flattens the part, attached with the pole piece, of the isolating membrane in the cell lamination raw material and is overlapped above the part, attached with the pole piece, of the isolating membrane in the cell lamination raw material;
the second feeding device (500) continues feeding, the part of the isolating membrane in the battery cell lamination raw material and the part of the battery cell lamination raw material pasted with the pole piece are alternately sent out, and when the part of the battery cell lamination raw material pasted with the pole piece is sent into the lamination device (400), the part of the isolating membrane in the battery cell lamination raw material which is sent out before is leveled and is overlapped above the part of the isolating membrane in the battery cell lamination raw material;
and the second feeding device (500) continuously feeds materials until the lamination of a group of battery cells is completed.
11. The lithium battery cell forming method of claim 10, wherein the step of sending out the cell lamination raw material by the second feeding device (500) above the lamination device (400) comprises the steps of: the second feeding device (500) is obliquely arranged and sends out the cell lamination raw materials above the obliquely arranged lamination device (400) at a certain angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010675039.9A CN112164818A (en) | 2020-07-14 | 2020-07-14 | Lithium battery cell forming equipment and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010675039.9A CN112164818A (en) | 2020-07-14 | 2020-07-14 | Lithium battery cell forming equipment and method |
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| CN112164818A true CN112164818A (en) | 2021-01-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113299970A (en) * | 2021-05-25 | 2021-08-24 | 深圳吉阳智能科技有限公司 | Pole piece feeding assembly and laminating machine |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113299970A (en) * | 2021-05-25 | 2021-08-24 | 深圳吉阳智能科技有限公司 | Pole piece feeding assembly and laminating machine |
| CN113299970B (en) * | 2021-05-25 | 2023-07-04 | 肇庆兆阳装备技术有限公司 | Pole piece feeding assembly and lamination machine |
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