CN114665162A - Lithium ion battery cell manufacturing method, lamination device and lithium ion battery - Google Patents
Lithium ion battery cell manufacturing method, lamination device and lithium ion battery Download PDFInfo
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- CN114665162A CN114665162A CN202011542280.0A CN202011542280A CN114665162A CN 114665162 A CN114665162 A CN 114665162A CN 202011542280 A CN202011542280 A CN 202011542280A CN 114665162 A CN114665162 A CN 114665162A
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- 238000003475 lamination Methods 0.000 title claims abstract description 120
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000010030 laminating Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 20
- 239000011241 protective layer Substances 0.000 claims description 2
- 230000007306 turnover Effects 0.000 abstract description 11
- 239000012528 membrane Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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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
- H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
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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
- H01M10/0409—Machines for assembling batteries for cells with wound 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a lamination device, a lithium ion battery and a manufacturing method of a lithium ion battery cell, wherein the lamination device comprises a lamination platform, a diaphragm transmission part, a cutter and a diaphragm traction piece, a diaphragm roll is arranged on the diaphragm transmission part, one end of a diaphragm on the diaphragm roll is connected with the lamination platform, the lamination platform can move between a first position and a second position, the cutter is arranged above the lamination platform at the first position and used for cutting the laminated diaphragm, the diaphragm traction piece comprises a traction clamp, a moving part driving the traction clamp to move and a position sensor arranged on the lamination platform, the traction clamp clamps the end part of the cut diaphragm, the moving part drives the traction clamp to move to the lamination platform at the second position and turn over the diaphragm, a diaphragm certificate can be arranged on the lamination platform, and the position sensor senses the position of the diaphragm so as to accurately position and fix the diaphragm on the lamination platform, the flatness and the positioning precision of the diaphragm are ensured.
Description
Technical Field
The invention relates to the technical field of battery manufacturing, in particular to a method for manufacturing a lithium ion battery cell, a laminating device and a lithium ion battery.
Background
At present, with the continuous development of new energy automobile industry, a high-capacity rechargeable battery becomes the trend of future development, and a lithium ion battery has the characteristics of high storage density, long service life and the like, so that the lithium ion battery becomes a column medium current in the battery. At present, in the manufacturing process of the battery, the preparation mode of the battery core mainly adopts a Z-shaped lamination scheme, wherein the diaphragm needs to completely wrap the outermost positive/negative pole piece, and after the diaphragm is cut off after one battery core is laminated each time, the diaphragm at the head end of the next battery core is in an open free state, and the diaphragm in the free state is positioned on the lamination platform. However, when the lamination platform and the membrane unwinding mechanism move with each other, the membrane in a free state is unreliable in state, and precision problems such as wrinkling, folding, deflection and the like may occur, which affects the manufacturing of the battery.
Disclosure of Invention
The invention aims to provide a method for manufacturing a lithium ion battery cell, which solves the technical problem that the diaphragm in a free state in the prior art has precision deviation in the manufacturing process.
The invention provides a lamination device, which comprises a lamination platform, a diaphragm conveying part, a cutting knife and a diaphragm traction piece,
the diaphragm transmission part is provided with a diaphragm roll, one end of a diaphragm on the diaphragm roll is connected with the lamination platform, the lamination platform can move between a first position and a second position, the cutting knife is arranged above the lamination platform at the first position and used for cutting the laminated diaphragm, and the diaphragm can be stacked on the lamination platform in a Z shape;
the diaphragm traction piece comprises a traction clamp, a moving part and a position sensor, the moving part drives the traction clamp to move, the position sensor is arranged on the lamination platform, the traction clamp clamps the end portion of a cut diaphragm, the moving part drives the traction clamp to overturn the diaphragm and move the diaphragm to the lamination platform located at a second position, and the position sensor senses the position of the diaphragm so that the traction clamp positions the diaphragm on the lamination platform.
The diaphragm transmission part comprises a diaphragm rotating shaft and a clamping rotating shaft, the diaphragm rotating shaft is located above the clamping rotating shaft, the diaphragm is wound on the diaphragm rotating shaft, one end of the diaphragm is fixed on the lamination platform, and the clamping rotating shaft is located between the diaphragm rotating shaft and the lamination platform and used for conveying the diaphragm.
The lamination device further comprises a feeding part and a discharging part, the feeding part is used for installing the battery pole pieces on the lamination platform and laminating the lamination platform and the diaphragm, and the discharging part is used for unloading the stacked battery cores.
The movable portion comprises a sliding arm, a rotating portion and a traction clamp connected with the sliding arm, the sliding arm drives the traction clamp to move, the rotating portion drives the sliding arm to rotate so as to drive the traction clamp to turn over, or the rotating portion drives the traction clamp to turn over.
The position sensor is arranged on the side part of the traction clamp or on the lamination platform.
The traction clamp comprises at least two clamping heads, and the clamping heads are wrapped with elastic protection layers.
The invention provides a method for manufacturing a lithium ion battery cell, which comprises the following steps,
after the battery core is manufactured for the first time at the first position, the traction clamp clamps the diaphragm and cuts off the diaphragm by using a cutting knife, wherein the traction clamp clamps the end part of the cut diaphragm connected with the diaphragm roll,
moving the pulling clamp to the second position via a sliding arm, and simultaneously moving the lamination platform to the second position, wherein the pulling clamp turns the end of the diaphragm 180 degrees during the movement,
positioning with a position sensor such that the pull clip positions the slit diaphragm end on the lamination platform at the second location;
and carrying out second-time battery core manufacturing.
The step of completing the cell manufacturing for the first time at the first position comprises the following steps:
after the first cathode plate is attached on the second position, the lamination platform is moved to the first position, the end part of the diaphragm is fixed on the lamination platform on the first position,
moving the positive plate of the battery core to a lamination platform, laminating the positive plate and the diaphragm,
moving the lamination platform stacked with the positive plate to the second position, moving the negative plate of the battery core to the lamination platform, and laminating the negative plate and the diaphragm;
and repeating the step of laminating the positive plate and the negative plate until the battery core is manufactured.
The first position and the second position are two working positions on the same horizontal plane, the sliding arm drives the traction clamp to horizontally move between the first position and the second position, and the process of moving the traction clamp to turn over the end part of the diaphragm by 180 degrees is to turn over the end part of the diaphragm in a direction perpendicular to the horizontal plane.
Wherein the step of manufacturing the second battery cell comprises the steps of,
moving the negative plate of the battery cell to a lamination platform at the second position, and laminating the negative plate and the diaphragm;
moving the lamination platform stacked with the negative pole pieces and the traction clamp to the first position, moving the positive pole piece of the battery core to the lamination platform, and laminating the positive pole piece and the diaphragm;
and reciprocating the lamination of the positive plate and the negative plate until the electric core is manufactured, cutting the diaphragm at the first position, and clamping the cut end part of the diaphragm through a traction clamp.
The invention relates to a lithium ion battery which is characterized in that a battery cell manufactured by the manufacturing method of the battery cell of the lithium ion battery is provided.
The laminating device provided by the invention clamps the end part of the cut diaphragm through the traction clamp and can drive the end part of the diaphragm to overturn 180, so that the end part of the diaphragm faces to the second position from the first position, when the diaphragm reaches the laminating platform at the second position, the traction clamp pulls out the diaphragm and places the diaphragm on the laminating platform, the diaphragm is fixed through the laminating platform, and the end part of the diaphragm is conveniently laminated with a pole piece in the direction of the laminating platform after the diaphragm is overturned, so that the reliability of the diaphragm in a free state when the laminating platform and the diaphragm unreeling mechanism move mutually can be avoided, and the precision problems of wrinkling, turnover, deflection and the like of the diaphragm in the free state can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a lamination device according to the present invention;
fig. 2 is a flow chart of a method for manufacturing a lithium ion battery cell according to the present invention;
fig. 3 and 4 are schematic diagrams illustrating station changes when the lamination device shown in fig. 1 is used for manufacturing a lithium ion battery cell, wherein the structure of the moving part is not shown in fig. 3 and 4, and only the structure of the traction clamp is provided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a lamination device for manufacturing a battery core of a battery, in which positive plates and negative plates are laminated at intervals through separators. In an embodiment of the invention, the lamination device comprises a lamination platform 10, a diaphragm transfer part, a cutting knife 15 and a diaphragm pulling part.
Install the diaphragm on the diaphragm transmission portion and roll up 21, diaphragm 22 one end on the diaphragm roll 21 can with lamination platform 10 connects, lamination platform 10 can move between first position A and second position B, cutting knife 15 set up in the top of first position A's lamination platform 10 for the diaphragm behind the cutting lamination, the diaphragm can be "Z" style of calligraphy pile up in on the lamination platform 10, be used for every two adjacent positive plates of interval and negative pole piece.
Specifically, the diaphragm transmission part comprises a diaphragm rotating shaft 20 and a clamping rotating shaft 24, the diaphragm rotating shaft 20 is located above the clamping rotating shaft 24, the diaphragm roll 21 is installed on the diaphragm rotating shaft 20, and one end of the diaphragm 22 is fixed on the lamination platform 10. The clamping rotating shaft 24 is located between the diaphragm rotating shaft 20 and the lamination platform 10, and the diaphragm 22 passes through the clamping rotating shaft and is conveyed to the diaphragm 22 through the clamping rotating shaft 24 so as to realize feeding of the diaphragm 22 during lamination. Wherein the clamping rotating shaft 24 has a certain clamping force, and can pull the membrane roll 21 to rotate during the rotation process so as to feed the membranes. The lamination device further comprises a feeding part (not shown) and a discharging part (not shown), wherein the feeding part is used for loading pole pieces of the battery on the lamination platform 10 and laminating the pole pieces with the diaphragm, and the discharging part is used for unloading the stacked battery cores. It can be understood that the feeding part and the discharging part are manipulators.
Referring to fig. 3 and 4, in the present embodiment, the diaphragm drawing member includes a drawing clip 31, a moving portion 32 for moving the drawing clip 31, and a position sensor 33 mounted on the lamination platform 10. The pulling clamp 31 clamps the end 22A of the cut diaphragm 22, and the moving part 32 moves the pulling clamp 31 to the lamination platform 10 at the second position B and turns the diaphragm 22 upside down. It should be noted that the end of the cut separator refers to the end left on the separator roll, not the end of the separator on the battery cell, and the end 22A is clamped by the drawing clip 31 described later. The traction clamp 31 comprises at least two clamping heads, and the clamping heads are wrapped with an elastic protective layer which can prevent membrane damage caused by clamping of the membrane.
The position sensor 33 senses the position of the diaphragm 22 to cause the traction clamp 31 to position the diaphragm 22 on the lamination platform 10. The position sensor 33 is arranged at the side of the traction clamp 31 or at the diaphragm fixing position of the lamination platform 10. In this embodiment, the position sensor 33 is provided on the surface of the lamination platform 10. The diaphragm is positioned on the lamination platform 10 by a positioning structure provided on the lamination platform 10, for example, a pressing claw structure fixes the end of the diaphragm, and after the diaphragm is fixed, the traction clamp 31 returns to the original position and does not work, and after the last pole piece is stacked, the traction work is performed.
Specifically, the moving portion 32 includes a sliding arm, a rotating portion and the traction clamp 31 connected to the sliding arm, the sliding arm drives the traction clamp 31 to move, the rotating portion drives the sliding arm to rotate and further drive the traction clamp 31 to turn, or the rotating portion drives the traction clamp 31 to turn. In this embodiment, the sliding arm slides through the slide rail, and horizontal displacement is realized. The rotating part can drive the sliding arm to rotate, the traction clamp 31 is arranged at the end part of the sliding arm, and then the sliding arm drives the traction clamp 31 to turn over. In other embodiments, the rotating part may be mounted on the sliding arm to directly control the turning of the traction clamp 31.
Referring to fig. 3 and 4 together, the end 22A of the diaphragm 22 is turned by the pulling clip 31, which means that the end 22A of the diaphragm 22 is turned in a direction perpendicular to the horizontal direction, in this embodiment, the pulling clip 31 turns the end 22A of the diaphragm 22 by 180 degrees, when the lamination platform moves horizontally from the first position a to the second position B, the pulling clip 31 moves along with the lamination platform 10 and turns the end of the diaphragm 22, so that the end 22A of the diaphragm 22 faces the second position B from the first position a, when the diaphragm 22 reaches the lamination platform in the second position B, the pulling clip 31 pulls out the diaphragm 22 and places the diaphragm 22 on the lamination platform 10, the diaphragm 22 is fixed by the lamination platform 10, and the diaphragm 22 is turned over so that the end 22A of the diaphragm 22 is conveniently laminated with the lamination platform in the direction of the lamination platform, thereby avoiding the possibility of wrinkling of the diaphragm in a free state, Precision problems such as turnover, deflection and the like; in the placing process, the position sensor 33 is arranged on the lamination platform 10, the position of the diaphragm 22 in the placing process is detected and fed back to the traction clamp, and real-time position location and deviation correction are achieved, so that the diaphragm is placed on the lamination platform 10 accurately.
Referring to fig. 2 and fig. 3, the present invention further provides a method for manufacturing a lithium ion battery cell, where the method in this embodiment is performed by using the lamination device, and the method includes:
step S1, after the cell fabrication is completed for the first time at the first position a, the traction clamp clamps the separator and cuts off the separator 22 using the cutting knife 15, wherein the traction clamp 31 clamps the end 22A of the cut separator connected to the separator roll.
Referring also to fig. 4, in step S2, the pulling clip 31 is moved to the second position B by the sliding arm, and the lamination platform 10 is moved to the second position B, wherein the pulling clip 31 turns the end of the diaphragm 180 degrees during the moving process. In fact, the traction clamps 31 and the lamination platform 10 are moved synchronously.
Step S3, positioning by position sensor 33 so that the traction clamp 31 positions the cut diaphragm end at the lamination platform 10 at the second position B.
And step S4, manufacturing the battery cell for the second time.
Specifically, in step S1, the method specifically includes:
a first step of moving said lamination platform 10 to said first position a and fixing the ends of said diaphragms to said lamination platform 10 in said first position a, wherein the diaphragms are laid flat on the lamination platform,
and secondly, moving the positive plate C of the battery core to a lamination platform 10, and laminating the positive plate C through a diaphragm, specifically, covering the positive plate C with the diaphragm.
Thirdly, moving the lamination platform 10 stacked with the positive plates to the second position B, moving the negative plates D of the battery core to the lamination platform 10, and laminating the negative plates D through the diaphragm; specifically, the negative plate D is placed on a diaphragm to be laminated with the positive plate C, then the negative plate is covered by the diaphragm,
and reciprocating the lamination of the positive plate and the negative plate until the battery core is manufactured, in the process, reciprocating the second step and the third step, enabling the lamination platform 10 to move back and forth between the first position A and the second position B, and stacking the diaphragms in a Z shape, so that no two adjacent positive plates C and negative plates D are spaced. When the cell is manufactured, the separator 22 is always cut off by the cutting knife 15 at the first position a, and the end of the separator is clamped by the traction clamp 21.
Further, the first position a and the second position B are two working positions on the same horizontal plane, the sliding arm drives the traction clamp 31 to move horizontally between the first position a and the second position B, and the process of moving the traction clamp 31 to turn over the end of the diaphragm by 180 degrees is to turn over the end of the diaphragm in a direction perpendicular to the horizontal plane. For example, the diaphragm end 22A is oriented in the first position a and turned over to the second position B, so that the extension of the diaphragm is always kept parallel to the horizontal plane, facilitating the fixing of the diaphragm on the lamination platform.
In this embodiment, the step S4 of performing the second electrical core manufacturing specifically includes:
in the second position B, moving the negative electrode plate of the battery cell onto the lamination platform 10, and laminating the negative electrode plate with the separator 22;
moving the lamination platform 10 stacked with the negative electrode plates and the traction clamp 31 to the first position a, moving the positive electrode plates of the battery core to the lamination platform 10, and laminating the positive electrode plates through the diaphragm 22;
and reciprocating the lamination of the positive plate and the negative plate until the battery core is manufactured, cutting the diaphragm at the first position A, and clamping the end part of the cut diaphragm through a traction clamp 31. That is, steps S1 to S4 are not repeated in the process of manufacturing the lithium ion battery cells, and the cells are manufactured in a complete batch.
In the method for manufacturing the lithium ion battery cell, the traction clamp and the position sensor are adopted to realize the direction conversion, installation and positioning of the diaphragm, the pole traction clamp pulls out the diaphragm and places the diaphragm on the lamination platform, the diaphragm is fixed through the lamination platform, the end part of the diaphragm is enabled to be in the direction of the lamination platform after the diaphragm is turned over, the lamination with a pole piece can be conveniently carried out, the flatness of the diaphragm on the lamination platform, namely the reliability of the diaphragm is ensured when the lamination platform and the diaphragm unwinding mechanism move mutually in the manufacturing process of the cell, and the precision problems of wrinkling, turnover, deflection and the like of the diaphragm in the free state can be avoided.
The invention also provides a lithium ion battery which comprises the battery cell manufactured by the manufacturing method of the lithium ion battery cell.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (11)
1. A lamination device is characterized by comprising a lamination platform, a diaphragm conveying part, a cutting knife and a diaphragm traction piece,
the diaphragm transmission part is provided with a diaphragm roll, one end of a diaphragm on the diaphragm roll is connected with the lamination platform, the lamination platform can move between a first position and a second position, the cutting knife is arranged above the lamination platform at the first position and used for cutting the laminated diaphragm, and the diaphragm can be stacked on the lamination platform in a Z shape;
the diaphragm traction piece comprises a traction clamp, a moving part and a position sensor, the moving part drives the traction clamp to move, the position sensor is arranged on the lamination platform, the traction clamp clamps the end portion of a cut diaphragm, the moving part drives the traction clamp to overturn the diaphragm and move the diaphragm to the lamination platform located at a second position, and the position sensor senses the position of the diaphragm so that the traction clamp positions the diaphragm on the lamination platform.
2. The laminating apparatus according to claim 1, wherein the diaphragm driving portion comprises a diaphragm rotating shaft and a clamping rotating shaft, the diaphragm rotating shaft is located above the clamping rotating shaft, the diaphragm is wound on the diaphragm rotating shaft, one end of the diaphragm is fixed on the laminating platform, and the clamping rotating shaft is located between the diaphragm rotating shaft and the laminating platform and is used for conveying the diaphragm.
3. The lamination device according to claim 2, further comprising a loading portion for loading the battery pole pieces on the lamination platform and laminating the battery pole pieces with the separator, and a unloading portion for unloading the stacked battery cells.
4. The laminating apparatus according to claim 2, wherein the moving portion comprises a sliding arm, a rotating portion, and the pulling clip connected to the sliding arm, the sliding arm drives the pulling clip to move, the rotating portion drives the sliding arm to rotate and thus drive the pulling clip to turn, or the rotating portion drives the pulling clip to turn.
5. The lamination assembly according to claim 4, wherein the position sensor is located on the side of the pulling grip or on the lamination platform.
6. The lamination assembly according to claim 4, wherein the pulling grip comprises at least two grips, the grips being wrapped with a resilient protective layer.
7. A method for manufacturing a lithium ion battery cell is characterized by comprising the following steps:
after the battery core is manufactured for the first time at the first position, the traction clamp clamps the diaphragm and cuts off the diaphragm by using a cutting knife, wherein the traction clamp clamps the end part of the cut diaphragm connected with the diaphragm roll,
moving the pulling clamp to a second position via a sliding arm, and simultaneously moving the lamination platform to the second position, wherein the pulling clamp turns the end of the diaphragm 180 degrees during moving,
positioning with a position sensor such that the traction clamp positions the cut diaphragm end on the lamination platform at the second location;
and carrying out second-time battery core manufacturing.
8. The method of fabricating a lithium-ion battery cell of claim 7, wherein the step of completing the fabrication of the cell for the first time at the first location comprises:
after the first negative plate is attached at the second position,
moving the lamination platform to the first position and securing an end of the diaphragm to the lamination platform in the first position,
moving the positive plate of the battery core to the lamination platform, laminating the positive plate and the diaphragm,
moving the lamination platform stacked with the positive plates to the second position, moving the negative plates of the battery core to the lamination platform, and laminating the negative plates and the diaphragm;
and repeating the step of laminating the positive plate and the negative plate until the battery core is manufactured.
9. The method according to claim 8, wherein the first position and the second position are two working positions on the same horizontal plane, the slide arm drives the pulling clip to move horizontally between the first position and the second position, and the process of moving the pulling clip to turn the end of the separator by 180 degrees is to turn the end of the separator vertically to the horizontal plane.
10. The method of fabricating a lithium ion battery cell of claim 7, wherein the step of performing a second cell fabrication comprises,
in the second position, moving a negative plate of the battery core to the lamination platform, and laminating the negative plate and the diaphragm;
moving the lamination platform stacked with the negative pole pieces and the traction clamp to the first position, moving the positive pole piece of the battery core to the lamination platform, and laminating the positive pole piece and the diaphragm;
and reciprocating the lamination of the positive plate and the negative plate until the electric core is manufactured, cutting the diaphragm at the first position, and clamping the cut end part of the diaphragm through a traction clamp.
11. A lithium ion battery comprising a cell made by the method of making a lithium ion battery cell of any of claims 7-10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011542280.0A CN114665162A (en) | 2020-12-23 | 2020-12-23 | Lithium ion battery cell manufacturing method, lamination device and lithium ion battery |
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| CN202011542280.0A CN114665162A (en) | 2020-12-23 | 2020-12-23 | Lithium ion battery cell manufacturing method, lamination device and lithium ion battery |
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| CN109390635A (en) * | 2018-09-30 | 2019-02-26 | 合肥国轩高科动力能源有限公司 | Automatic lamination mechanism of Z formula lamination electricity core |
| CN110212236A (en) * | 2019-06-14 | 2019-09-06 | 惠州亿纬锂能股份有限公司 | A kind of lithium ion battery high speed laminating method, lamination device and lithium ion battery |
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