CN113903999A - Battery cell production line - Google Patents
Battery cell production line Download PDFInfo
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- CN113903999A CN113903999A CN202111182204.8A CN202111182204A CN113903999A CN 113903999 A CN113903999 A CN 113903999A CN 202111182204 A CN202111182204 A CN 202111182204A CN 113903999 A CN113903999 A CN 113903999A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 52
- 238000004804 winding Methods 0.000 claims abstract description 75
- 238000012545 processing Methods 0.000 claims abstract description 74
- 238000001035 drying Methods 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims abstract description 3
- 238000005520 cutting process Methods 0.000 claims description 24
- 238000005096 rolling process Methods 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000011267 electrode slurry Substances 0.000 description 6
- 238000010924 continuous production Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 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
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound 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
- H01M10/05—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
-
- 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
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a battery cell production line, which comprises a positive plate processing line and a negative plate processing line, wherein the positive plate processing line and the negative plate processing line respectively comprise the following components in sequence: thick liquids agitating unit, coating unit, drying device, roll-in device and cut the device, wherein coating unit is suitable for and is connected with feedway, and battery electricity core production line still includes: a winding device adapted to wind the pole piece passing through the positive pole piece processing line and the pole piece passing through the negative pole piece processing line; the first reversing device is arranged between the slitting device and the winding device and is suitable for adjusting the horizontal conveying direction and/or the vertical height of the pole pieces passing through the slitting device; and the control device is connected with the feeding device and the winding device and is suitable for adapting the processing speed of the winding device to the feeding speed of the feeding device. The technical scheme of the invention overcomes the defects of low processing efficiency and high cost of the battery cell production line in the prior art.
Description
Technical Field
The invention relates to the technical field of battery processing equipment, in particular to a battery cell production line.
Background
With the continuous development of new energy, electric drive gradually becomes the mainstream of equipment drive, so the demand of lithium batteries is increasing. The traditional production line of the lithium battery cell comprises stations such as slurry stirring, positive and negative pole coating, rolling, slitting, die cutting and winding. In the process from the cutting station to the winding station, the pole pieces need to be wound into a coil in the prior art, and then the coiled pole pieces are transported among the stations by using an AGV trolley. The production mode ensures that the pole pieces need to be coiled and fed and uncoiled in the production process, and the processing efficiency is influenced. Meanwhile, the AGV is high in cost, and pole pieces can be damaged in the transferring process of the manipulator.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defects of low processing efficiency and high cost of the battery cell production line in the prior art, so as to provide a battery cell production line.
In order to solve the problems, the invention provides a battery cell production line, which comprises a positive plate processing line and a negative plate processing line, wherein the positive plate processing line and the negative plate processing line respectively comprise the following components in sequence: thick liquids agitating unit, coating unit, drying device, roll-in device and cut the device, wherein coating unit is suitable for and is connected with feedway, and battery electricity core production line still includes: a winding device adapted to wind the pole piece passing through the positive pole piece processing line and the pole piece passing through the negative pole piece processing line; the first reversing device is arranged between the slitting device and the winding device and is suitable for adjusting the horizontal conveying direction and/or the vertical height of the pole pieces passing through the slitting device; and the control device is connected with the feeding device and the winding device and is suitable for adapting the processing speed of the winding device to the feeding speed of the feeding device.
Optionally, the battery cell production line further comprises a second reversing device, the second reversing device is suitable for adjusting the horizontal conveying direction and/or the vertical height of the pole piece, and the second reversing device is arranged between the drying device and the rolling device, and/or between the rolling device and the slitting device.
Optionally, the first or second reversing device comprises: the transverse reversing device comprises a plurality of first conveying rollers arranged at intervals, and a preset angle is formed between the central axes of at least part of adjacent first conveying rollers.
Optionally, the first or second reversing device comprises: and the longitudinal reversing device comprises a plurality of second conveying rollers which are arranged at intervals and are arranged in parallel, and at least part of the adjacent second conveying rollers have preset distances in the vertical direction.
Optionally, the battery cell production line further comprises a buffer device, and the buffer device is arranged between the drying device and the rolling device, and/or between the rolling device and the slitting device, and/or between the slitting device and the winding device.
Optionally, the caching apparatus includes: the interval sets up decides the conveying roller and moves the conveying roller, moves the conveying roller and can follow and predetermine the direction and be close to or keep away from and decide the conveying roller and remove, wherein, predetermines the direction and is the angle setting with the direction of delivery of pole piece.
Optionally, the positive electrode sheet processing line and the negative electrode sheet processing line further include: and the die cutting device is positioned between the cutting device and the winding device, wherein the first reversing device is arranged between the cutting device and the die cutting device.
Optionally, a buffer device and a second reversing device are arranged at both the upstream and downstream positions of the die-cutting device.
Optionally, the winding device is a single-roll winding device or a multi-roll winding device.
Optionally, the battery electric core production line further comprises a plurality of conveying roller sets, the plurality of conveying roller sets are matched with the winding device, the conveying roller sets are suitable for conveying pole pieces passing through the positive pole piece processing line or the negative pole piece processing line into the winding device, the plurality of conveying roller sets are located at the same vertical position, the plurality of conveying roller sets are arranged in a staggered mode in the vertical direction, and the output ends of the plurality of conveying roller sets are arranged in a staggered mode in the horizontal direction.
Optionally, the production line of the battery cell further comprises a plurality of conveying roller sets, the plurality of conveying roller sets are matched with the winding device, the conveying roller sets are suitable for conveying pole pieces passing through the positive pole piece processing line or the negative pole piece processing line into the winding device, the plurality of conveying roller sets are located at the same horizontal position, output ends of the plurality of conveying roller sets are arranged in a staggered mode along the horizontal direction, a third reversing device is arranged between the conveying roller sets and the winding device, and the third reversing device is suitable for adjusting the conveying direction of the pole pieces along the horizontal direction.
Alternatively, the positive electrode sheet processing line and the negative electrode sheet processing line are arranged in parallel.
The invention has the following advantages:
by utilizing the technical scheme of the invention, after the pole pieces pass through the cutting device of the positive pole piece processing line or the negative pole piece processing line, the positions of the cut pole pieces are staggered through the first reversing device, the pole pieces are directly led into the winding device, and meanwhile, the control device enables the processing speed of the winding device to be matched with the feeding speed of the feeding device, so that the working condition that how much the upstream equipment is produced and how much the downstream equipment is processed is realized, and the continuous production is realized. The continuous production that the pole piece was not the lapping has been realized to above-mentioned structure, and machining efficiency is high, need not outer AGV dolly or other handling tool simultaneously, and the overall cost of production line is low. Therefore, the technical scheme of the invention overcomes the defects of low processing efficiency and high cost of the battery cell production line in the prior art.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 shows a schematic structural view of a first embodiment of a battery cell production line of the present invention;
FIG. 2 shows an enlarged schematic view at A in FIG. 1;
fig. 3 shows a schematic structural view of a transverse reversing device of the battery cell production line in fig. 1;
fig. 4 shows a schematic structural view of a longitudinal reversing device of the battery cell production line in fig. 1;
fig. 5 shows a schematic structural diagram of a cache device of the battery cell production line in fig. 1;
fig. 6 shows a schematic structural view of a second embodiment of the battery cell production line of the present invention;
fig. 7 shows a schematic structural diagram of a third embodiment of the battery cell production line of the present invention; and
fig. 8 shows a schematic structural diagram of a fourth embodiment of the battery cell production line of the present invention.
Description of reference numerals:
10. a slurry stirring device; 20. a coating device; 30. a drying device; 40. a rolling device; 50. a slitting device; 60. a winding device; 70. a cache device; 71. fixing a conveying roller; 72. moving a conveying roller; 80. a second reversing device; 90. a die cutting device; 100. a positive plate processing line; 110. a first reversing device; 120. a transverse reversing device; 121. a first conveying roller; 130. a longitudinal reversing device; 131. a second conveying roller; 140. a third reversing device; 200. a negative plate processing line; 300. and a conveying roller group.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
As shown in fig. 1 and 2, the battery cell production line of the present embodiment includes a positive electrode sheet processing line 100 and a negative electrode sheet processing line 200. The positive plate processing line 100 and the negative plate processing line 200 each include a slurry stirring device 10, a coating device 20, a drying device 30, a rolling device 40, and a slitting device 50, which are sequentially arranged, wherein the coating device 20 is adapted to be connected with a feeding device. Further, the battery cell production line further includes a winding device 60, a first reversing device 110, and a control device. The winding device 60 is adapted to wind the pole pieces passing through the positive pole sheet processing line 100 and the pole pieces passing through the negative pole sheet processing line 200. A first reversing device 110 is arranged between the slitting device 50 and the winding device 60, the first reversing device 110 being adapted to adjust the horizontal transport direction and/or the vertical height of the pole pieces passing through the slitting device 50. The control device is connected to the feeding device and the winding device 60 and is adapted to adapt the processing speed of the winding device 60 to the feeding speed of the feeding device.
By using the technical scheme of the embodiment, after the pole pieces pass through the slitting device 50 of the positive pole piece processing line 100 or the negative pole piece processing line 200, the positions of the slit multiple pole pieces are staggered through the first reversing device 110, the multiple pole pieces are directly introduced into the winding device 60, and meanwhile, the control device enables the processing speed of the winding device 60 to be matched with the feeding speed of the feeding device, so that how much upstream equipment is produced, how much downstream equipment is processed, and continuous production is realized. The continuous production that the pole piece was not the lapping has been realized to above-mentioned structure, and machining efficiency is high, need not extra AGV dolly or other handling tool simultaneously, and the overall cost of production line is low. Therefore, the technical scheme of the embodiment overcomes the defects of low processing efficiency and high cost of a battery cell production line in the prior art.
In the present embodiment, the stations included in the positive electrode sheet processing line 100 and the negative electrode sheet processing line 200 are substantially the same, and the difference is that the types of the slurries charged in the slurry stirring apparatuses 10 are different.
Further, in the embodiment, through the processing task and the intelligent monitoring, the control system can directly match the processing speed of the downstream process with the production speed of the upstream raw material, and an additional storage device is not needed.
Further, the slurry stirring device 10 in the positive electrode sheet processing line 100 is used to stir and transport the positive electrode slurry onto the coating device 20, so that the coating device 20 coats the positive electrode sheet with the positive electrode slurry. The slurry stirring device 10 in the negative electrode sheet processing line 200 is used to stir the negative electrode slurry and transport it onto the coating device 20, so that the coating device 20 coats the negative electrode slurry on the electrode sheet.
Further, the drying device 30 is used for drying the pole piece coated with the positive electrode slurry or the negative electrode slurry.
In the solution of the present embodiment, the rolling device 40 includes a cooling mechanism. The rolling device can be used for cold pressing the pole pieces after drying treatment, so that the temperature of the pole pieces is reduced.
In the technical scheme of this embodiment, after the positive plate or the negative plate enters the slitting device 50, a plurality of strip-shaped positive plates and strip-shaped negative plates are slit and generated, and the strip-shaped positive plates and the strip-shaped negative plates enter the winding device 60 to be wound and form the battery cell.
As can be seen from fig. 2, in this embodiment, after the pole piece passes through the slitting device 50, the pole piece is slit into a plurality of strip-shaped pole pieces, and the plurality of strip-shaped pole pieces are reversed by the first reversing device 110, and are conveyed in parallel with each other with intervals being staggered. Therefore, after passing through the slitting device 50 and the first reversing device 110, the pole pieces can directly enter the winding device 60 to be wound, and the pole pieces do not need to be transported in a roll.
As shown in fig. 3, in the solution of the present embodiment, the first reversing device 110 includes a transverse reversing device 120. The transverse reversing device 120 comprises a plurality of first conveying rollers 121 arranged at intervals, and the central axes of at least part of the adjacent first conveying rollers 121 have preset angles. Specifically, in the present embodiment, the number of the first conveying rollers 121 is two, and the central axes of the two first conveying rollers 121 are disposed at an angle. As will be understood by those skilled in the art in conjunction with fig. 3, after the pole piece passes through the two first conveying rollers 121 which are angled, the direction or position of the horizontal transport of the pole piece can be adjusted, in this embodiment. After the pole piece passes through the two first conveying rollers 121, the position of the horizontal conveying of the pole piece is staggered.
With reference to fig. 2, in this embodiment, a plurality of the above transverse reversing devices 120 are disposed between the slitting device 50 and the winding device 60, so that after the pole pieces are slit, a plurality of strip-shaped pole pieces can be staggered and conveyed in parallel, and then the pole pieces can be directly fed into the winding device 60 after being slit.
Of course, a person skilled in the art can adjust the specific number of the first conveying rollers 121 according to actual working requirements, and meanwhile, the angle formed between the adjacent first conveying rollers 121 can be adaptively adjusted by the person skilled in the art according to the direction in which the pole piece needs to be adjusted.
As shown in fig. 4, in the solution of the present embodiment, the first reversing device 110 further includes a longitudinal reversing device 130, the longitudinal reversing device 130 includes a plurality of second conveying rollers 131 arranged at intervals and in parallel, and at least some of the adjacent second conveying rollers 131 have a preset distance in the vertical direction. Specifically, two second conveying rollers 131 are provided in this example, and the two second conveying rollers 131 are arranged in parallel with each other and have a height difference in the vertical direction. As will be understood by those skilled in the art in conjunction with fig. 4, the height of the pole piece conveyed by the two second conveying rollers 131 can be changed. When the height difference exists between the outlet of the slitting device 50 and the inlet of the winding device 60, the height position of the pole pieces can be adjusted through the longitudinal reversing device 130, and the production continuity is ensured.
Of course, the first reversing device 110 may be provided without the longitudinal reversing device 130 if the accuracy of the installation of the slitting device 50 outlet and the winding device 60 is sufficiently high and it is ensured that the slitting device 50 outlet and the winding device 60 inlet are in the same horizontal position.
Further, the specific number of the second conveying rollers 131, and the height difference between the adjacent second conveying rollers 131, can be adaptively designed by those skilled in the art according to the height of the pole piece to be adjusted.
As shown in fig. 2, in the technical solution of this embodiment, the battery cell production line further includes a second reversing device 80. The second reversing device 80 can adjust the pole piece and the upper, lower, left and right directions, that is, the conveying direction of the pole piece, so as to ensure that the pole piece can enter the rear-end equipment according to a predetermined track, and prevent the pole piece and the film from wrinkling.
Specifically, the second reversing device 80 is disposed between the drying device 30 and the rolling device 40, and between the rolling device 40 and the slitting device 50, and the second reversing device 80 can adjust the position of the pole piece, so that the pole piece can smoothly flow in the front and rear devices of the second reversing device 80. The second direction changing device 80 may include the above-mentioned transverse direction changing device 120 and longitudinal direction changing device 130, so that the left, right, up and down directions of the pole pieces can be adjusted. Of course, the second reversing device 80 may also comprise only one of the above devices according to actual requirements.
Further, if the installation accuracy of the drying device 30, the rolling device 40 and the slitting device 50 is high enough to ensure that the outlet and the inlet between the devices are in the same horizontal and vertical positions, the second reversing device 80 may not be arranged between the devices.
As shown in fig. 1 and fig. 2, in the technical solution of this embodiment, the battery cell production line further includes a buffer device 70. The buffer device 70 can buffer the pole pieces, so that the pole pieces can be stored firstly and then moved. When the back-end equipment fails, the buffer device 70 will automatically buffer the pole pieces, and thus will not affect the production of the upstream equipment. Further, buffer devices 70 are provided between the drying device 30 and the rolling device 40, between the rolling device 40 and the slitting device 50, and between the slitting device 50 and the winding device 60.
As shown in fig. 5, in the solution of the present embodiment, the buffer device 70 includes a fixed transport roller 71 and a movable transport roller 72 that are arranged at an interval, and the movable transport roller 72 can move close to or away from the fixed transport roller 71 along a preset direction, wherein the preset direction is arranged at an angle with the transport direction of the pole piece. Specifically, in the present embodiment, a plurality of parallel fixed conveyance rollers 71 and a plurality of parallel movable conveyance rollers 72 are provided. Among them, a plurality of fixed conveyance rollers 71 and a plurality of movable conveyance rollers 72 are provided in order at intervals. As can be seen in connection with fig. 5, the movable transport roller 72 can move relative to the fixed transport roller 71 in a direction perpendicular to the transport of the pole pieces. As will be understood by those skilled in the art in conjunction with fig. 5, when the movable transport roller 72 moves away from the fixed transport roller 71, the transport distance of the pole piece is extended, thereby acting as a buffer for the pole piece.
Of course, the skilled person can adapt the direction of movement of the movable transport roller 72 relative to the fixed transport roller 71, as long as this direction has an angle relative to the transport direction of the pole pieces.
As shown in fig. 1 and 2, in the technical solution of the present embodiment, the positive electrode sheet processing line 100 and the negative electrode sheet processing line 200 further include a die cutting device 90, and the die cutting device 90 is located between the slitting device 50 and the winding device 60. Specifically, the die cutting device 90 is used for processing the tab on the pole piece. When the battery needs to be provided with a tab, the pole piece can be directly input into the die cutting device 90 after passing through the buffer device 70 and the first reversing device 110. When the battery needs no pole ear, the pole piece passes through the buffer device 70 and the first reversing device 110, and then is directly input into the winding device 60. Further, the die cutting device 90 performs die cutting on the pole lugs of the input pole pieces, and a compression roller mechanism is arranged in the die cutting device 90 to remove burrs generated in the die cutting process. The die-cut pole pieces are directly fed into the winding device 60 after passing through the buffer device 70 and the second reversing device 80.
As shown in fig. 2, in the technical solution of the present embodiment, the buffering devices 70 are disposed at both upstream and downstream positions of the die-cutting device 90. That is, in the present embodiment, the buffering means 70 and the first reversing means 110 are provided between the slitting means 50 and the die-cutting means 90, and the buffering means 70 and the second reversing means 80 are provided between the die-cutting means 90 and the winding means 60.
As shown in fig. 1, in the present embodiment, the winding device 60 is a multi-roll winding device. Specifically, the multi-roll winding device is characterized in that a plurality of strip-shaped pole pieces can be wound on a battery cell in one multi-roll winding device.
Preferably, the positive electrode sheet processing line 100 and the negative electrode sheet processing line 200 in the present embodiment are provided in parallel. And then the occupied area of the battery cell production line in the embodiment is smaller.
Example two
As shown in fig. 6, the battery cell production line of the second embodiment is different from the first embodiment in that the winding device 60 is a single-roll winding device. Specifically, the single-winding device is characterized in that a plurality of single-winding devices are provided, and each single-winding device is matched with one strip-shaped pole piece to perform winding processing of the battery cell.
EXAMPLE III
As shown in fig. 7, in the fourth embodiment, the battery cell production line further includes a plurality of conveying roller sets 300, the plurality of conveying roller sets 300 are matched with the winding device 60, and the conveying roller sets 300 are adapted to convey the pole pieces passing through the positive pole piece processing line 100 or the negative pole piece processing line 200 into the winding device 60. The plurality of conveying roller sets 300 are located at the same vertical position, the plurality of conveying roller sets 300 are arranged in a staggered mode along the vertical direction, and the output ends of the plurality of conveying roller sets 300 are arranged in a staggered mode along the horizontal direction. Specifically, the plurality of conveying roller sets 300 have a height difference therebetween and are located at the same vertical position, and the output ends of the plurality of conveying roller sets 300 are horizontally displaced, so that the output ends of different conveying roller sets 300 are engaged with different winding devices 60. The above structure forms a layered input structure of the pole pieces.
Example four
As shown in fig. 8, in the fourth embodiment, the battery cell production line further includes a plurality of conveying roller sets 300, the plurality of conveying roller sets 300 are matched with the winding device 60, and the conveying roller sets 300 are adapted to convey the pole pieces passing through the positive pole piece processing line 100 or the negative pole piece processing line 200 into the winding device 60. The plurality of conveying roller sets 300 are located at the same horizontal position, the output ends of the plurality of conveying roller sets 300 are arranged along the horizontal direction in a staggered mode, a third reversing device 140 is arranged between the conveying roller sets 300 and the winding device 60, and the third reversing device 140 is suitable for adjusting the conveying direction of the pole pieces along the horizontal direction. Specifically, in the fourth embodiment, the plurality of transport roller groups 300 are positioned at the same horizontal position, and the output ends of the plurality of transport roller groups 300 are shifted in the horizontal direction, as compared with the third embodiment. The above structure forms a single layer steering input structure of the pole piece.
Further, the third reversing device 140 may include the above-mentioned transverse reversing device 120, so that the third reversing device 140 may adjust the conveying direction of the pole piece along the horizontal direction.
The person skilled in the art can adapt the multi-roll winding device in the first embodiment or the single-roll winding device in the second embodiment to the above-mentioned layered input structure or single-layer turning input structure according to the actual working requirement.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (12)
1. The utility model provides a battery electricity core production line, its characterized in that includes positive plate processing line (100) and negative plate processing line (200), positive plate processing line (100) with negative plate processing line (200) all include that set gradually:
a slurry stirring device (10), a coating device (20), a drying device (30), a rolling device (40) and a cutting device (50), wherein the coating device (20) is suitable for being connected with a feeding device,
the battery cell production line further includes:
a winding device (60), said winding device (60) being adapted to wind pole pieces passing through said positive pole sheet processing line (100) and pole pieces passing through said negative pole sheet processing line (200);
the first reversing device (110) is arranged between the slitting device (50) and the winding device (60), and the first reversing device (110) is suitable for adjusting the horizontal conveying direction and/or the vertical height of the pole pieces passing through the slitting device (50);
and the control device is connected with the feeding device and the winding device (60), and is suitable for adapting the processing speed of the winding device (60) and the feeding speed of the feeding device.
2. The battery cell production line of claim 1, further comprising a second reversing device (80), the second reversing device (80) being adapted to adjust the horizontal conveying direction and/or the vertical height of the pole pieces, the second reversing device (80) being arranged between the drying device (30) and the rolling device (40) and/or between the rolling device (40) and the slitting device (50).
3. The battery cell production line of claim 2, wherein the first reversing device (110) or the second reversing device (80) comprises:
the transverse reversing device (120) comprises a plurality of first conveying rollers (121) arranged at intervals, and the central axes of at least part of adjacent first conveying rollers (121) have preset angles.
4. The battery cell production line of claim 2, wherein the first reversing device (110) or the second reversing device (80) comprises:
the longitudinal reversing device (130) comprises a plurality of second conveying rollers (131) which are arranged at intervals and are arranged in parallel, and at least part of the adjacent second conveying rollers (131) have preset distances in the vertical direction.
5. The battery cell production line of claim 2, further comprising a buffer device (70), wherein the buffer device (70) is arranged between the drying device (30) and the rolling device (40), and/or between the rolling device (40) and the slitting device (50), and/or between the slitting device (50) and the winding device (60).
6. The battery cell production line of claim 5, wherein the buffer device (70) comprises:
the fixed conveying roller (71) and the movable conveying roller (72) that the interval set up, movable conveying roller (72) can be close to or keep away from along the preset direction fixed conveying roller (71) removes, wherein, the preset direction is the angle setting with the direction of delivery of pole piece.
7. The battery cell production line of claim 5, wherein the positive plate processing line (100) and the negative plate processing line (200) further comprise:
a die cutting device (90) located between the slitting device (50) and the winding device (60), wherein the first reversing device (110) is arranged between the slitting device (50) and the die cutting device (90).
8. The battery cell production line of claim 7, wherein the buffering device (70) and the second reversing device (80) are disposed at both upstream and downstream positions of the die-cutting device (90).
9. The battery cell production line of claim 1, wherein the winding device (60) is a single-roll winding device or a multi-roll winding device.
10. The battery cell production line of claim 1, further comprising a plurality of transport roller sets (300), wherein the plurality of transport roller sets (300) are engaged with the winding device (60), the transport roller sets (300) are adapted to transport pole pieces passing through the positive pole piece processing line (100) or the negative pole piece processing line (200) into the winding device (60), wherein the plurality of transport roller sets (300) are at the same vertical position, the plurality of transport roller sets (300) are vertically displaced, and the output ends of the plurality of transport roller sets (300) are horizontally displaced.
11. The battery cell production line of claim 1, further comprising a plurality of conveying roller sets (300), wherein the plurality of conveying roller sets (300) are matched with the winding device (60), the conveying roller sets (300) are suitable for conveying pole pieces passing through the positive pole piece processing line (100) or the negative pole piece processing line (200) into the winding device (60), wherein the plurality of conveying roller sets (300) are located at the same horizontal position, output ends of the plurality of conveying roller sets (300) are arranged in a staggered mode in the horizontal direction, a third reversing device (140) is arranged between the conveying roller sets (300) and the winding device (60), and the third reversing device (140) is suitable for adjusting the conveying direction of the pole pieces in the horizontal direction.
12. The battery cell production line of claim 1, wherein the positive plate processing line (100) and the negative plate processing line (200) are arranged in parallel.
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