CN117673491A - Dry-method battery cell lamination preparation device and preparation method thereof - Google Patents
Dry-method battery cell lamination preparation device and preparation method thereof Download PDFInfo
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- CN117673491A CN117673491A CN202211090572.4A CN202211090572A CN117673491A CN 117673491 A CN117673491 A CN 117673491A CN 202211090572 A CN202211090572 A CN 202211090572A CN 117673491 A CN117673491 A CN 117673491A
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- 238000003475 lamination Methods 0.000 title claims abstract description 112
- 238000002360 preparation method Methods 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000005520 cutting process Methods 0.000 claims abstract description 107
- 239000002131 composite material Substances 0.000 claims abstract description 65
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims description 92
- 238000005507 spraying Methods 0.000 claims description 86
- 239000000853 adhesive Substances 0.000 claims description 61
- 230000001070 adhesive effect Effects 0.000 claims description 61
- 239000012528 membrane Substances 0.000 claims description 50
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 33
- 229910052744 lithium Inorganic materials 0.000 claims description 33
- 239000011888 foil Substances 0.000 claims description 28
- 230000001502 supplementing effect Effects 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 23
- 238000013329 compounding Methods 0.000 claims description 22
- 238000011144 upstream manufacturing Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 15
- 239000003292 glue Substances 0.000 claims description 7
- 239000010410 layer Substances 0.000 description 20
- 239000012790 adhesive layer Substances 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 239000011889 copper foil Substances 0.000 description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 11
- 230000009471 action Effects 0.000 description 9
- 239000007921 spray Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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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
-
- 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 relates to the technical field of dry-method cell lamination preparation devices, and particularly provides a dry-method cell lamination preparation device and a preparation method thereof. In order to solve the problems of more preparation procedures and low lamination efficiency of the existing dry-method battery cell, the preparation device of the dry-method battery cell lamination comprises: the negative electrode unit preparation module comprises a negative electrode piece cutting device, a negative electrode unit preparation module and a negative electrode unit preparation module, wherein the negative electrode piece cutting device is used for cutting a negative electrode piece into a negative electrode piece unit; the positive electrode unit preparation module comprises a positive electrode plate cutting device, a positive electrode plate forming device and a positive electrode plate forming device, wherein the positive electrode plate cutting device is used for cutting a positive electrode plate into positive electrode plate units; the lamination unit preparation module comprises a battery cell composite roller assembly and a lamination unit cutting device, wherein the lamination unit cutting device is arranged at the downstream of the battery cell composite roller assembly, and the battery cell composite roller assembly is used for compositing a negative electrode sheet unit, a negative electrode diaphragm, a positive electrode sheet unit and a positive electrode diaphragm to form a battery cell substrate; the lamination unit cutting device is used for cutting the battery core base material into battery core lamination units so as to improve the subsequent lamination efficiency.
Description
Technical Field
The invention relates to the technical field of dry-method cell lamination preparation devices, and particularly provides a dry-method cell lamination preparation device and a preparation method thereof.
Background
At present, the preparation of dry-method cell lamination still follows wet process, specifically, current cell lamination preparation device prepares positive plate and negative pole piece respectively, cuts after it is compound with the diaphragm respectively, and then shifts into the lamination machine with positive pole compound piece and negative pole compound piece, prepares the cell lamination through the lamination machine, but along with dry process technical development for the preparation process of dry-method cell lamination is more, not only lamination efficiency is lower, and the lithium supplementing difficulty of dry-method diaphragm in the process is big moreover, need develop lithium supplementing equipment alone in the process, lithium supplementing equipment investment is big, lithium supplementing efficiency is low.
Accordingly, a new dry-method cell lamination preparation device is needed in the field to solve the problems of more preparation procedures and low lamination efficiency of the existing dry-method cell.
Disclosure of Invention
The invention aims to solve the technical problems of more preparation procedures and low lamination efficiency of the existing dry-method battery cell.
In a first aspect, the present invention provides a dry cell stack fabrication apparatus comprising:
the negative electrode unit preparation module comprises a negative electrode piece cutting device, wherein the negative electrode piece cutting device is used for cutting a negative electrode piece into a negative electrode piece unit;
The positive electrode unit preparation module comprises a positive electrode plate cutting device, wherein the positive electrode plate cutting device is used for cutting a positive electrode plate into positive electrode plate units;
the lamination unit preparation module is arranged at the downstream of the positive electrode unit preparation module and the negative electrode unit preparation module;
the lamination unit preparation module comprises a battery cell composite roller assembly and a lamination unit cutting device, wherein the lamination unit cutting device is arranged at the downstream of the battery cell composite roller assembly; the battery cell composite roller assembly is used for compositing the negative electrode plate unit, the negative electrode diaphragm, the positive electrode plate unit and the positive electrode diaphragm to form a battery cell base material; the lamination unit cutting device is used for cutting the cell base material to form a plurality of cell lamination units.
In the preferred technical scheme of the dry-method cell lamination preparation device, the dry-method cell lamination preparation device further comprises:
the negative electrode composite module is arranged at the upstream of the negative electrode unit preparation module;
the negative electrode composite module comprises a spraying lithium supplementing device and a negative electrode thermal composite roller assembly, and the negative electrode thermal composite roller is arranged at the downstream of the spraying lithium supplementing device;
The negative thermal composite roller assembly is used for compositing a negative A-surface membrane, a negative current collector and a negative B-surface membrane to form the negative pole piece;
the spraying lithium supplementing device is used for spraying lithium glue solution to one side, close to the negative electrode current collector, of the negative electrode A-surface membrane and the negative electrode B-surface membrane.
In the preferred technical scheme of the dry method battery cell lamination preparation device, the negative electrode composite module comprises a negative electrode A mask piece unreeling mechanism, a negative electrode B mask piece unreeling mechanism and a negative electrode current collector unreeling mechanism, wherein the negative electrode A mask piece unreeling mechanism, the negative electrode B mask piece unreeling mechanism and the negative electrode current collector unreeling mechanism are all arranged at the upstream of the negative electrode thermal composite roller assembly;
the negative electrode A mask piece unreeling mechanism is used for unreeling the negative electrode A mask piece;
the negative electrode B mask piece unreeling mechanism is used for unreeling the negative electrode B mask piece;
the negative electrode current collector unreeling mechanism is used for unreeling the negative electrode current collector;
and/or, the dry method battery cell lamination preparation device further comprises an anode composite module, wherein the anode composite module is arranged at the upstream of the anode unit preparation module;
the positive electrode composite module comprises a positive electrode A mask piece unreeling mechanism, a positive electrode B mask piece unreeling mechanism, a positive electrode current collector unreeling mechanism and a positive electrode thermal composite roller assembly, wherein the positive electrode A mask piece unreeling mechanism, the positive electrode B mask piece unreeling mechanism and the positive electrode current collector unreeling mechanism are all arranged at the upstream of the positive electrode thermal composite roller assembly;
The positive electrode A mask sheet unreeling mechanism is used for unreeling the positive electrode A mask sheet;
the positive B mask piece unreeling mechanism is used for unreeling the positive B mask piece;
the positive current collector unreeling mechanism is used for unreeling the positive current collector;
the positive thermal composite roller assembly is used for compositing the positive A-side membrane, the positive current collector and the positive B-side membrane to form the positive pole piece.
In the preferred technical scheme of the dry method battery cell lamination preparation device, the negative electrode unit preparation module further comprises a negative electrode sheet conveying device and a negative electrode transfer manipulator, wherein the negative electrode sheet conveying device is arranged at the downstream of the negative electrode sheet cutting device, and the negative electrode transfer manipulator is arranged at the downstream of the negative electrode sheet conveying device;
the negative electrode sheet conveying device is used for conveying the negative electrode sheet unit to a first station of the negative electrode transfer manipulator;
the negative electrode transfer manipulator is used for transferring the negative electrode sheet unit onto the negative electrode diaphragm;
the positive electrode unit preparation module further comprises a positive electrode sheet conveying device and a positive electrode transfer manipulator, wherein the positive electrode sheet conveying device is arranged at the downstream of the positive electrode sheet cutting device, and the positive electrode transfer manipulator is arranged at the downstream of the positive electrode sheet conveying device;
The positive plate conveying device is used for conveying the positive plate unit to a first station of the positive electrode transferring manipulator;
the positive electrode transfer manipulator is used for transferring the positive electrode plate unit to the positive electrode diaphragm.
In the preferred technical scheme of the dry method battery cell lamination preparation device, the negative electrode unit preparation module further comprises a negative electrode piece conductive adhesive spraying device, wherein the negative electrode piece conductive adhesive spraying device is arranged at the downstream of the negative electrode piece conveying device, and the negative electrode piece conductive adhesive spraying device corresponds to the second station of the negative electrode transfer manipulator;
the positive electrode unit preparation module further comprises a positive electrode piece conductive adhesive spraying device, wherein the positive electrode piece conductive adhesive spraying device is arranged at the downstream of the positive electrode piece conveying device, and the positive electrode piece conductive adhesive spraying device corresponds to the second station of the positive electrode transfer manipulator.
In the preferred technical scheme of the dry method cell lamination preparation device, the negative electrode unit preparation module further comprises a negative electrode diaphragm supporting member capable of moving in the vertical direction, the negative electrode diaphragm supporting member is arranged at the downstream of the negative electrode sheet conductive adhesive spraying device, the negative electrode sheet supporting member is arranged at the bottom of the negative electrode diaphragm and corresponds to the third station of the negative electrode transfer manipulator, and the negative electrode diaphragm supporting member plays a role in supporting the negative electrode diaphragm; and/or the number of the groups of groups,
The positive electrode unit preparation module further comprises a positive electrode diaphragm supporting member capable of moving in the vertical direction, the positive electrode diaphragm supporting member is arranged at the downstream of the positive electrode sheet conductive adhesive spraying device, the positive electrode sheet supporting member is arranged at the bottom of the positive electrode diaphragm and corresponds to the third station of the positive electrode transfer manipulator, and the positive electrode diaphragm supporting member plays a role in supporting the positive electrode diaphragm.
In the preferred technical scheme of the dry method battery cell lamination preparation device, the negative electrode unit preparation module further comprises a negative electrode foil tab detection device, which is arranged at the upstream of the negative electrode sheet cutting device, wherein the negative electrode foil tab detection device is used for detecting the position of a tab which is die-cut on the negative electrode current collector; and/or the number of the groups of groups,
the positive electrode unit preparation module further comprises a positive electrode foil tab detection device which is arranged at the upstream of the positive electrode sheet cutting device; the positive electrode foil tab detection device is used for detecting the position of a tab which is die-cut on the positive electrode current collector.
In a second aspect, the present invention further provides a dry method for manufacturing a battery cell stack, where the dry method for manufacturing a battery cell stack applies the dry method for manufacturing a battery cell stack described in the above technical scheme, and the manufacturing method includes:
Cutting the negative electrode plate into a negative electrode plate unit;
cutting the positive plate into positive plate units;
thermally compounding the negative electrode plate unit, the negative electrode diaphragm, the positive electrode plate unit and the positive electrode diaphragm to form a cell substrate;
and cutting the cell substrate into a cell lamination unit.
In the preferred technical scheme of the dry method battery cell lamination preparation method, the preparation method further comprises the following steps:
respectively spraying lithium glue solution on one side of the negative electrode A surface membrane and one side of the negative electrode B surface membrane, which are close to the negative electrode current collector; spraying conductive adhesive on the front and back sides of the negative current collector;
thermally compounding the negative electrode A-surface membrane, the negative electrode current collector and the negative electrode B-surface membrane to form the negative electrode piece;
spraying conductive adhesive on two sides of the positive current collector;
and thermally compounding the positive electrode A-surface membrane, the positive electrode current collector body and the positive electrode B-surface membrane to form the positive electrode plate.
In the preferred technical scheme of the dry method battery cell lamination preparation method, before the step of thermally compounding the negative electrode sheet unit, the negative electrode separator, the positive electrode sheet unit and the positive electrode separator to form the battery cell base material, the preparation method further comprises:
spraying conductive adhesive on one surface of the negative electrode plate unit and then bonding with the negative electrode diaphragm;
And spraying conductive adhesive on one surface of the positive plate unit and then bonding with the positive diaphragm.
As will be appreciated by those skilled in the art, the dry cell lamination preparation apparatus of the present invention comprises: the negative electrode unit preparation module comprises a negative electrode piece cutting device, a negative electrode unit forming device and a negative electrode unit forming device, wherein the negative electrode piece cutting device is used for cutting a negative electrode piece into a negative electrode piece unit; the positive electrode unit preparation module comprises a positive electrode plate cutting device, a positive electrode plate forming device and a positive electrode plate forming device, wherein the positive electrode plate cutting device is used for cutting a positive electrode plate into positive electrode plate units; the lamination unit preparation module is arranged at the downstream of the positive electrode unit preparation module and the negative electrode unit preparation module; the lamination unit preparation module comprises a battery cell composite roller assembly and a lamination unit cutting device, wherein the lamination unit cutting device is arranged at the downstream of the battery cell composite roller assembly, and the battery cell composite roller assembly is used for compositing a negative electrode sheet unit, a negative electrode diaphragm, a positive electrode sheet unit and a positive electrode diaphragm to form a battery cell substrate; the lamination unit cutting device is used for cutting the cell substrate into cell lamination units.
Under the condition that the technical scheme is adopted, the dry method battery cell lamination preparation device firstly cuts the negative electrode plate into a plurality of negative electrode plate units through the negative electrode plate cutting device, meanwhile, the positive electrode plate is cut into a plurality of positive electrode plate units through the positive electrode plate cutting device, then the negative electrode plate units, the negative electrode diaphragms, the positive electrode plate units and the positive electrode diaphragms are thermally compounded through the battery cell compounding roller assembly to obtain a battery cell base material, and finally the diaphragm of the battery cell base material is cut through the lamination unit cutting device to form a plurality of battery cell lamination units. According to the invention, the processes are integrated in the same device, so that the next process is directly carried out after one process is finished, the production efficiency is effectively improved, and the battery cell lamination unit is a battery cell unit compounded with the negative electrode plate unit, the negative electrode diaphragm, the positive electrode plate unit and the positive electrode diaphragm, and the subsequent lamination process is to laminate by taking the battery cell lamination unit as the minimum unit, so that the lamination efficiency can be greatly improved.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of a dry cell laminate manufacturing apparatus of the present invention;
fig. 2 is a preparation flow chart of the dry method cell lamination preparation device of the invention;
fig. 3 is a schematic cross-sectional view of a cell lamination unit after completion of the dry cell lamination preparation apparatus of the present invention.
List of reference numerals:
10. a negative electrode A mask piece unreeling mechanism; 11. a negative current collector unreeling mechanism; 12. a negative electrode B mask piece unreeling mechanism;
20. an anode A mask sheet unreeling mechanism; 21. an anode current collector unreeling mechanism; 22. an anode B mask piece unreeling mechanism;
30. spraying a lithium supplementing device;
40. a first conductive adhesive spraying device; 41. a second conductive adhesive spraying device; 42. a third conductive adhesive spraying device; 43. a fourth conductive adhesive spraying device; 44. a fifth conductive adhesive spraying device;
50. a negative thermal composite roller assembly; 501. a negative electrode foil tab detection device; 502. a negative plate cutting device; 503. lamination unit cutting device; 51. a positive thermal composite roller assembly; 511. the positive electrode foil tab detection device; 512. a positive plate cutting device;
60. a negative electrode transfer manipulator; 601. a first station of the negative electrode transfer manipulator; 602. a second station of the negative electrode transfer manipulator; 603. a third station of the negative electrode transfer manipulator; 604. a negative electrode separator support member;
61. A positive electrode transfer manipulator; 611. a first station of the positive electrode transfer manipulator; 612. a second station of the positive electrode transfer manipulator; 613. a third station of the positive electrode transfer manipulator; 614. a positive electrode separator support member;
70. a negative electrode sheet conveying device; 71. positive plate conveying device; 72. lamination unit conveying device;
80. a negative electrode diaphragm unreeling mechanism; 81. an anode diaphragm unreeling mechanism;
9. a cell lamination unit; 90. a negative electrode sheet unit; 91. a positive electrode sheet unit;
01. a negative plate drive roller assembly; 02. a positive plate drive roller assembly; 03. an auxiliary roller; 04. a cell composite roller assembly;
901. a negative electrode A mask sheet layer; 9010. a lithium supplementing layer is arranged on the surface A of the negative electrode; 9011. a negative electrode A-side copper foil conductive adhesive layer; 9021. a copper foil conductive adhesive layer on the B side of the negative electrode; 9020. a lithium supplementing layer on the B surface of the negative electrode; 902. a negative electrode B mask sheet layer; 903. a copper foil layer; 9030. a conductive adhesive layer on the B surface of the negative electrode; 9a, a negative plate separator layer; 911. positive plate A mask layer; 9110. an aluminum foil conductive adhesive layer on the surface A of the positive electrode; 9120. aluminum foil B surface conductive adhesive layer; 9130. a negative plate diaphragm conductive adhesive layer; 9140. a B-side conductive adhesive layer of the positive plate; 912. a positive plate B mask layer; 913. an aluminum foil layer; 9b, a positive plate separator layer.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. Those skilled in the art can adapt it as desired to suit a particular application.
It should be noted that, in the description of the present invention, terms such as "upper", "lower", "vertical", and the like, refer to directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," second, "" third, "" fourth, "and fifth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the term "connected" should be interpreted broadly, and for example, may be a fixed connection, a removable connection, or a unitary connection; or may be a mechanical connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, in order to solve the problems of more preparation processes and low lamination efficiency of the existing dry-method battery cell lamination, the dry-method battery cell lamination preparation device of the present invention includes:
the negative electrode unit preparation module comprises a negative electrode sheet cutting device 502 for cutting the negative electrode sheet into the negative electrode sheet units 90;
the positive electrode unit preparation module comprises a positive electrode sheet cutting device 512 for cutting the positive electrode sheet into positive electrode sheet units 91;
the lamination unit preparation module is arranged at the downstream of the positive electrode unit preparation module and the negative electrode unit preparation module; the lamination unit preparation module comprises a battery cell composite roller assembly 04 and a lamination unit cutting device 503, wherein the lamination unit cutting device 503 is arranged at the downstream of the battery cell composite roller assembly 04, and the battery cell composite roller assembly 04 is used for compositing a negative electrode sheet unit 90, a negative electrode diaphragm, a positive electrode sheet unit 91 and a positive electrode diaphragm to form a battery cell substrate; lamination unit cutting device 503 is used for cutting the cell substrate into cell lamination units 9.
The above arrangement has the advantages that: the dry method battery cell lamination preparation device of the invention firstly cuts a negative electrode plate into a plurality of negative electrode plate units 90 through a negative electrode plate cutting device 502, meanwhile, a positive electrode plate is cut into a plurality of positive electrode plate units 91 through a positive electrode plate cutting device 512, then the negative electrode plate units 90, a negative electrode diaphragm, the positive electrode plate units 91 and the positive electrode diaphragm are thermally compounded through a battery cell compounding roller assembly 04 to obtain a battery cell base material, and finally a lamination unit cutting device 503 cuts off the diaphragm of the battery cell base material to form a plurality of battery cell lamination units 9. The invention integrates the processes in the same device, so that the next process can be directly carried out after one process is finished, the production efficiency is effectively improved, and the battery cell lamination unit 9 is a battery cell unit compounded with the negative electrode plate unit 90, the negative electrode diaphragm, the positive electrode plate unit 91 and the positive electrode diaphragm, and the subsequent lamination process is to laminate by taking the battery cell lamination unit 9 as the minimum unit, so that the lamination efficiency can be greatly improved.
Referring to fig. 1, in a preferred embodiment, the dry cell laminate manufacturing apparatus includes a negative electrode composite module, a negative electrode unit manufacturing module, a positive electrode composite module, a positive electrode unit manufacturing module, and a laminate unit manufacturing module. Wherein, negative pole compound module sets up in the upper reaches of negative pole unit preparation module, and positive pole compound module sets up in the upper reaches of positive pole unit preparation module, and lamination unit preparation module sets up in the low reaches of negative pole unit preparation module and positive pole unit preparation module.
Further, the negative electrode composite module comprises a negative electrode A face film piece unreeling mechanism 10, a negative electrode current collector unreeling mechanism 11, a negative electrode B face film piece unreeling mechanism 12, two spraying lithium supplementing devices 30, two first conductive adhesive spraying devices 40 and a negative electrode thermal composite roller assembly 50, wherein the negative electrode thermal composite roller assembly 50 is used for thermally compositing a negative electrode A face film piece, a negative electrode current collector and a negative electrode B face film piece to obtain a negative electrode piece, the negative electrode A face film piece unreeling mechanism 10, the negative electrode B face film piece unreeling mechanism 12 and the negative electrode current collector unreeling mechanism 11 are all arranged at the upstream of the negative electrode thermal composite roller assembly 50, and the negative electrode current collector unreeling mechanism 11 is further positioned between the negative electrode A face film piece unreeling mechanism 10 and the negative electrode B face film piece unreeling mechanism 12.
Specifically, the negative electrode A-surface film unreeling mechanism 10 is used for unreeling a negative electrode A-surface film, the negative electrode B-surface film unreeling mechanism 12 is used for unreeling a negative electrode B-surface film, and the negative electrode current collector unreeling mechanism 11 is used for unreeling a negative electrode current collector, wherein the negative electrode current collector is copper foil, and the copper foil is die-cut with lugs. The two spraying lithium supplementing devices 30 are respectively arranged at the downstream of the negative electrode A-surface membrane unreeling mechanism 10 and the negative electrode B-surface membrane unreeling mechanism 12 and at the upstream of the negative electrode thermal composite roller assembly 50, and the spraying lithium supplementing devices 30 are used for spraying lithium glue solution to the surfaces of one sides of the negative electrode A-surface membrane and the negative electrode B-surface membrane, which are close to the negative electrode current collector, for supplementing lithium. Further, two first conductive adhesive spraying devices 40 are disposed between the negative current collector unreeling mechanism 11 and the negative thermal compound roller assembly 50, and are respectively disposed at two sides of the negative current collector, and are used for spraying conductive adhesive to the front and back sides of the negative current collector. Further, in other embodiments, one skilled in the art may select the anode current collector as other foils, such as an anode composite current collector, etc., as desired.
Specifically, the negative thermal composite roll assembly 50 includes two mutually cooperating negative thermal composite rolls. The negative electrode A mask piece unreeling mechanism 10 comprises a driving motor and a film unreeling roller, wherein the output end of the driving motor is connected with the film unreeling roller, the negative electrode A mask piece is wound on the film unreeling roller, the driving motor drives the film unreeling roller to rotate, and the negative electrode A mask piece is unreeled. The negative electrode A-surface film unreeling mechanism 10 and the negative electrode B-surface film unreeling mechanism 12 have the same structure, specifically, the negative electrode B-surface film is wound on a film unreeling roller, a driving motor drives the film unreeling roller to rotate, and the negative electrode B-surface film is unreeled. The negative electrode current collector unreeling mechanism 11 comprises a driving motor and a negative electrode current collector unreeling roller, wherein the output end of the driving motor is connected with the negative electrode current collector unreeling roller, the negative electrode current collector is wound on the negative electrode current collector unreeling roller, the driving motor drives the negative electrode current collector unreeling roller to rotate, and the negative electrode current collector unreels. The spraying lithium supplementing device 30 is a spraying device commonly used in the existing cell production for spraying lithium glue solution, and therefore, the structure thereof is not limited. The first conductive paste spraying device 40 is also a spraying device for spraying conductive paste commonly used in the production of the battery cells, and thus, the structure thereof is not limited.
Further, the negative unit preparation module includes a negative foil tab detection device 501, a negative sheet driving roller assembly 01, a negative sheet cutting device 502, a negative sheet conveying device 70, a negative transfer manipulator 60, a negative diaphragm unreeling mechanism 80, a negative diaphragm supporting member 604, and a second conductive adhesive spraying device 41 (i.e., a negative sheet conductive adhesive spraying device in the claims). The negative electrode sheet driving roller assembly 01 is arranged at the downstream of the negative electrode sheet driving roller assembly 501, the negative electrode sheet cutting device 502 is arranged at the downstream of the negative electrode sheet driving roller assembly 01, and the negative electrode sheet detecting device 501 is used for detecting the position of a tab on a negative electrode sheet, so that the negative electrode sheet is cut off into a negative electrode sheet unit 90 under the action of the negative electrode sheet cutting device 502 after passing through the negative electrode sheet driving roller assembly 01 as the basis of the negative electrode sheet cutting device 502 to cut off the negative electrode sheet. Specifically, a sensor is provided on the negative electrode foil tab detection device 501, and the sensor can detect the tab position on the negative electrode sheet.
Further, the negative electrode sheet conveying device 70 is disposed downstream of the negative electrode sheet driving roller assembly 01, and the negative electrode sheet driving roller assembly 01 is used to convey the negative electrode sheet unit 90 onto the negative electrode sheet conveying device 70. Specifically, the negative electrode sheet driving roller assembly 01 specifically includes two negative electrode sheet driving rollers that cooperate with each other, and the negative electrode sheet unit 90 is between the two negative electrode sheet driving rollers and moves toward the negative electrode sheet conveying device 70 under the driving thereof. The negative electrode sheet conveying device 70 is specifically a belt conveyor, or may be of other structures and forms such as a chain conveyor, so that the structure is not limited at all, and can be selected by one skilled in the art according to the need.
Further, the negative electrode transferring manipulator 60 is disposed downstream of the negative electrode sheet conveying device 70, and a first station 601 of the negative electrode transferring manipulator corresponds to the negative electrode sheet conveying device 70, and the negative electrode sheet conveying device 70 is used for conveying the negative electrode sheet unit 90 to the first station 601 of the negative electrode transferring manipulator. Further, a second conductive paste spraying device 41 is disposed downstream of the negative electrode sheet conveying device 70, and the second conductive paste spraying device 41 corresponds to the second station 602 of the negative electrode transfer robot, and is configured to spray conductive paste onto the B surface of the negative electrode sheet unit 90. Further, a negative electrode separator unreeling mechanism 80 is disposed downstream of the second conductive adhesive spraying device 41, and a negative electrode separator support member 604 is disposed at the bottom of the negative electrode separator and corresponds to the third station 603 of the negative electrode transfer robot. Specifically, the negative electrode transferring manipulator 60 grabs the negative electrode sheet unit 90 at the first station 601, transfers the negative electrode sheet unit 90 to the second station 602, sprays conductive adhesive on the B surface of the negative electrode sheet unit 90 by the second conductive adhesive spraying device 41, and transfers the negative electrode sheet unit to the third station 603, at this time, the negative electrode diaphragm is unreeled, the negative electrode diaphragm supporting member 604 rises to be abutted to the negative electrode diaphragm, and simultaneously the negative electrode sheet unit 90 descends under the action of the negative electrode transferring manipulator 60, so that one surfaces of the negative electrode sheet unit 90 and the negative electrode diaphragm are bonded to obtain a lithium supplementing negative electrode unit.
Specifically, the negative electrode cutting device 502 includes a cylinder and a cutting knife, where the output end of the cylinder is connected with the cutting knife, so that the cutting knife moves in the vertical direction under the driving of the cylinder, or the negative electrode sheet cutting device 502 may also be a laser cutting device, and the pole piece is cut by laser, so that the specific structure and form of the negative electrode sheet cutting device 502 are not limited, and those skilled in the art can set the device according to the needs.
It will be appreciated by those skilled in the art that the cathode transfer robot 60 is a device commonly used in the prior art for gripping or handling articles to perform lifting, rotating, translating, etc. actions, thereby changing the position and posture of the gripped articles, and therefore the structure will not be described in detail. The second conductive paste spraying device 41 and the first conductive paste spraying device 40 have the same structure. The negative electrode diaphragm support member 604 is provided to be movable up and down so as not to abut against the negative electrode diaphragm after the negative electrode diaphragm support member 604 is lowered so as not to affect the movement of the negative electrode diaphragm, and to abut against the negative electrode diaphragm after the negative electrode diaphragm support member 604 is raised so as to be fixable at a set position, and to provide a supporting function for the adhesion of the negative electrode diaphragm to the negative electrode sheet unit 90, for example, the negative electrode diaphragm support member 604 may be moved in the vertical direction by an electric screw, an electric push rod, or the like, and may be set as necessary by a person skilled in the art.
Further, the positive electrode composite module comprises a positive electrode A mask piece unreeling mechanism 20, a positive electrode B mask piece unreeling mechanism 22, a positive electrode current collector unreeling mechanism 21, two third conductive adhesive spraying devices 42 and a positive electrode thermal composite roller assembly 51, wherein the positive electrode thermal composite roller assembly 51 is used for thermally compositing a positive electrode A mask piece, a positive electrode current collector and a positive electrode B mask piece to obtain a positive electrode piece. Specifically, the positive thermal compounding roller assembly 51 includes two positive thermal compounding rollers that cooperate with each other to complete the roll thermal compounding. The positive A mask sheet unreeling mechanism 20, the positive B mask sheet unreeling mechanism 22 and the positive current collector unreeling mechanism 21 are arranged on the upstream of the positive thermal composite roller assembly 51, the positive current collector unreeling mechanism 21 is further located between the positive A mask sheet unreeling mechanism 20 and the positive B mask sheet unreeling mechanism 22, the positive A mask sheet unreeling mechanism 20 is used for unreeling positive A mask sheets, the positive B mask sheet unreeling mechanism 22 is used for unreeling positive B mask sheets, the positive current collector unreeling mechanism 21 is used for unreeling positive current collector, wherein the positive current collector is aluminum foil, and the aluminum foil is die-cut with lugs.
It should be noted that, the structures of the positive electrode a mask sheet unreeling mechanism 20, the positive electrode B mask sheet unreeling mechanism 22, and the negative electrode a mask unreeling mechanism 10 are the same, the structure of the positive electrode current collector unreeling mechanism 21 is the same as the structure of the negative electrode current collector unreeling mechanism 11, and the structure of the third conductive adhesive spraying device 42 is the same as the structure of the first conductive adhesive spraying device 40, so that the structures of the above devices are not repeated. In addition, in other embodiments, one skilled in the art may select the positive current collector as other foils, such as a positive composite current collector, etc., as desired.
Further, the positive electrode unit preparation module includes a positive electrode foil tab detection device 511, a positive electrode sheet driving roller assembly 02, a positive electrode sheet cutting device 512, a positive electrode sheet conveying device 71, a positive electrode transfer manipulator 61, a positive electrode diaphragm unreeling mechanism 81, a positive electrode diaphragm supporting member 614, and a fourth conductive adhesive spraying device 43 (i.e., a positive electrode sheet conductive adhesive spraying device in the claims). The positive plate driving roller assembly 02 is arranged at the downstream of the positive plate driving roller assembly 511, the positive plate cutting device 512 is arranged at the downstream of the positive plate driving roller assembly 02, and the positive plate cutting device 511 is used for detecting the position of a tab on a positive plate, so that the positive plate is cut into positive plate units 91 under the action of the positive plate cutting device 512 after passing through the positive plate driving roller assembly 02 as the basis of the positive plate cutting device 512 for cutting the positive plate. Specifically, the positive electrode foil tab detection device 211 is provided with a sensor for detecting the tab position on the positive electrode sheet, so as to serve as a basis for cutting the positive electrode sheet by the positive electrode sheet cutting device 512. The structure of the positive electrode sheet cutting device 512 is the same as that of the negative electrode sheet cutting device 502, and therefore, the description thereof will not be repeated.
Further, the positive electrode sheet conveying device 71 is disposed downstream of the positive electrode sheet driving roller assembly 02, and the positive electrode sheet driving roller assembly 02 is configured to convey the cut positive electrode sheet unit 91 onto the positive electrode sheet conveying device 71. Specifically, the positive electrode sheet driving roller assembly 02 includes two positive electrode sheet driving rollers that are engaged with each other, and the positive electrode sheet unit 91 is moved in the direction of the positive electrode sheet conveying device 71 between the two positive electrode sheet driving rollers and under the driving thereof. The structure of the positive electrode sheet conveying device 71 is the same as that of the negative electrode sheet conveying device 70, and therefore, a description thereof will not be given.
Further, the positive electrode transfer robot 61 is disposed downstream of the positive electrode sheet conveying device 71, and the first station 611 of the positive electrode transfer robot corresponds to the positive electrode sheet conveying device 71, and the positive electrode sheet conveying device 71 is configured to convey the positive electrode sheet unit 91 to the first station 611 of the positive electrode transfer robot. Further, the fourth conductive paste spraying device 43 is disposed downstream of the positive electrode sheet conveying device 71, and the fourth conductive paste spraying device 43 corresponds to the second station 612 of the positive electrode transfer robot. Further, the positive electrode diaphragm unreeling mechanism 81 is disposed downstream of the fourth conductive adhesive spraying device 43, the positive electrode diaphragm supporting member 614 is disposed at the bottom of the positive electrode diaphragm and corresponds to the third station 613 of the positive electrode transfer manipulator, and the positive electrode diaphragm supporting member 614 and the negative electrode diaphragm supporting member 604 have the same structure and are all disposed to be capable of stretching and moving in the vertical direction. Specifically, the positive electrode transferring manipulator 61 grabs the positive electrode sheet unit 91 at the first station 611 and transfers the positive electrode sheet unit 91 to the second station 612, then the fourth conductive adhesive spraying device 43 sprays conductive adhesive on the B surface of the positive electrode sheet unit 91, and transfers the positive electrode sheet to the third station 613, at this time, the positive electrode diaphragm is unreeled, the positive electrode diaphragm supporting member 614 is lifted to be in contact with the positive electrode diaphragm, and simultaneously the positive electrode sheet unit 91 is lowered under the action of the positive electrode transferring manipulator 61, so that one surfaces of the positive electrode sheet unit 91 and the positive electrode diaphragm are bonded to obtain the positive electrode unit.
It should be noted that, the structure of the positive electrode transfer manipulator 61 is the same as the structure of the negative electrode transfer manipulator 60, and the structure of the fourth conductive adhesive spraying device 43 is the same as the structure of the first conductive adhesive spraying device 40, so that the structure of the above devices will not be repeated.
Further, the lamination unit preparation module includes a battery cell composite roller assembly 04, a fifth conductive adhesive spraying device 44, a lamination unit cutting device 503 and a lamination unit conveying device 72, the lamination unit cutting device 503 is disposed at the downstream of the battery cell composite roller assembly 04, specifically, the battery cell composite roller assembly 04 includes two battery cell composite rollers matched with each other, and the battery cell composite roller assembly 04 is used for compositing the negative electrode sheet unit 90, the negative electrode diaphragm, the positive electrode sheet unit 91 and the positive electrode diaphragm to form a battery cell substrate. A fifth conductive paste spraying device 44 is disposed upstream of the cell composite roller assembly 04 for spraying a conductive paste onto the negative electrode separator. Lamination unit cutting device 503 is used for cutting the cell substrate to form cell lamination unit 9, and lamination unit conveying device 72 is disposed downstream of lamination unit cutting device 503 and is used for transferring lamination unit to the next process. The structure of the lamination unit cutting device 503 is the same as that of the negative electrode sheet cutting device 502, and therefore, a description thereof will not be repeated.
Further, the dry method cell lamination preparation device further comprises a plurality of auxiliary rollers 03, wherein the auxiliary rollers 03 are respectively arranged on two sides of the negative electrode diaphragm support member 604, and the negative electrode current collector is abutted against the auxiliary rollers 03 so as to play a role in guiding and lifting the negative electrode current collector. Similarly, auxiliary rollers 03 are provided on both sides of the positive electrode separator support member 614.
Referring to fig. 1 and 2, the dry method cell lamination preparation apparatus in the above embodiment operates as follows:
the negative electrode A-surface membrane and the negative electrode B-surface membrane are respectively unreeled at a negative electrode A-surface membrane unreeling mechanism 10 and a negative electrode B-surface membrane unreeled mechanism 12, and then a spraying lithium supplementing device 30 is respectively adopted at one side close to the copper foil to supplement lithium to the membrane; after the copper foil with the die-cut tabs is unreeled at the negative current collector unreeling mechanism 11, the two first conductive adhesive spraying devices 40 respectively spray conductive adhesive on the front and back surfaces of the copper foil; then the negative electrode A-surface membrane, the negative electrode B-surface membrane and the copper foil synchronously enter a negative electrode thermal compounding roller assembly 50 for thermal compounding to obtain a lithium supplementing negative electrode plate;
then the anode foil tab detection device 501 detects the tab position as the basis for determining when to cut off the anode pole piece, and the anode pole piece is cut into anode piece units 90 under the action of the anode piece cutting device 502 after passing through the anode piece driving roller assembly 01 and is transmitted to the anode piece conveying device 70;
The negative electrode transfer manipulator 60 transfers the negative electrode sheet unit 90 to the second station 602 at the first station 601 thereof, sprays conductive adhesive on the B-side of the negative electrode sheet unit 90 by the second conductive adhesive spraying device 41, and transfers to the third station 603 thereof; at this time, the negative electrode diaphragm is unreeled at the negative electrode diaphragm unreeling mechanism 80 and sequentially passes through the three auxiliary rollers 03, when the negative electrode diaphragm unit 90 is transported to the third station 603 of the negative electrode transporting manipulator, the negative electrode diaphragm supporting member 604 is lifted to the upper horizontal tangential positions of the two auxiliary rollers 03 at the two sides of the negative electrode diaphragm supporting member, and simultaneously the negative electrode diaphragm unit 90 is lowered under the action of the negative electrode transporting manipulator 60, so that the negative electrode diaphragm unit 90 is adhered to one side of the negative electrode diaphragm to obtain a lithium supplementing negative electrode unit, and then the fifth conductive adhesive spraying device 44 sprays conductive adhesive to the other side of the negative electrode diaphragm;
the positive electrode A surface film and the positive electrode B surface film are respectively unreeled at the positive electrode A surface film unreeling mechanism 20 and the positive electrode B surface film unreeled mechanism 22, and after the aluminum foil with the die-cut tabs is unreeled at the positive electrode current collector unreeled mechanism 21, two third conductive adhesive spraying devices 42 respectively spray conductive adhesive on the front side and the back side of the aluminum foil; then the positive electrode A-surface membrane, the positive electrode B-surface membrane and the aluminum foil synchronously enter a positive electrode thermal compounding roller assembly 51 for thermal compounding to obtain a positive electrode plate;
Then the positive electrode foil tab detection device 511 detects the tab position as a basis for determining when to cut off the positive electrode sheet; after passing through the positive plate driving roller component 02, the positive plate is cut into positive plate units 91 under the action of the positive plate cutting device 512 and is conveyed to the positive plate conveying device 71, then the positive plate unit 91 is conveyed to the second station 612 by the positive plate conveying manipulator 61 at the first station 611, conductive adhesive is sprayed on the B surface of the positive plate unit 91 by the fourth conductive adhesive spraying device 43, and then the positive plate is conveyed to the third station 613; at this time, the positive electrode diaphragm is unreeled at the positive electrode diaphragm unreeling mechanism 81 and sequentially passes through the two auxiliary rollers 03, when the positive electrode sheet unit 91 is transported to the third station 613 of the positive electrode transfer manipulator, the positive electrode diaphragm supporting member 614 is lifted to the upper horizontal tangential position of the two auxiliary rollers 03, and simultaneously the positive electrode sheet unit 91 is lowered under the action of the positive electrode transfer manipulator 61 to be adhered to one side of the positive electrode diaphragm, so as to obtain a positive electrode unit;
then, the positive electrode unit and the lithium supplementing negative electrode unit are thermally compounded at the position of the battery cell compounding roller assembly 04, and then cut off by the lamination unit cutting device 503 to obtain a battery cell lamination unit 9, and the battery cell lamination unit 9 is transported to the next process by the lamination unit transporting device 72.
Referring to fig. 3, the cell lamination unit structure includes, in order, a negative a-side membrane layer 901, a negative a-side lithium supplementing layer 9010, a negative a-side copper foil conductive adhesive layer 9011, a copper foil layer 903, a negative B-side copper foil conductive adhesive layer 9021, a negative B-side lithium supplementing layer 9020, a negative B-side membrane layer 902, a negative B-side conductive adhesive layer 9030, a negative sheet membrane layer 9a, a negative sheet membrane conductive adhesive layer 9130, a positive a-side membrane layer 911, a positive a-side aluminum foil conductive adhesive layer 9110, an aluminum foil layer 913, an aluminum foil B-side conductive adhesive layer 9120, a positive B-side membrane layer 912, a positive B-side conductive adhesive layer 9140, and a positive sheet membrane layer 9B.
The foregoing embodiments are merely illustrative of the principles of the present invention, and are not intended to limit the scope of the invention, as those skilled in the art can modify the above structure without departing from the principles of the present invention, so that the present invention can be applied to more specific application scenarios.
In addition, the invention also provides a dry method battery cell lamination preparation method, which adopts the dry method battery cell lamination preparation device in the embodiment, and the preparation method mainly comprises the following steps:
cutting the negative electrode plate into a negative electrode plate unit;
Cutting the positive plate into positive plate units;
thermally compounding the negative electrode sheet unit, the negative electrode diaphragm, the positive electrode sheet unit and the positive electrode diaphragm to form a cell base material;
and cutting the cell substrate into a cell lamination unit.
Specifically, the preparation method of the dry-method battery cell lamination specifically comprises the following steps:
unreeling the negative electrode A mask sheet, unreeling the negative electrode current collector and unreeling the negative electrode B mask sheet;
respectively spraying lithium glue solution on one side of the negative electrode A surface membrane and one side of the negative electrode B surface membrane, which are close to the negative electrode current collector; spraying conductive adhesive on the front and back sides of the negative current collector;
thermally compounding the negative electrode A-surface membrane, the negative electrode current collector and the negative electrode B-surface membrane to form a negative electrode plate;
cutting the negative electrode plate into a negative electrode plate unit;
spraying conductive adhesive on one surface of the negative electrode plate unit and then bonding the negative electrode plate unit with a negative electrode diaphragm;
unreeling the positive electrode A mask sheet, unreeling the positive electrode current collector and unreeling the positive electrode B mask sheet;
spraying conductive adhesive on the front and back sides of the positive current collector;
thermally compounding the positive electrode A-surface membrane, the positive electrode current collector and the positive electrode B-surface membrane to form a positive electrode plate;
cutting the positive plate into positive plate units;
spraying conductive adhesive on one surface of the positive plate unit and then bonding the positive plate unit with the positive diaphragm;
thermally compounding the negative electrode sheet unit, the negative electrode diaphragm, the positive electrode sheet unit and the positive electrode diaphragm to form a cell base material;
Cutting the cell substrate into a cell lamination unit;
and laminating the cell lamination units.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (10)
1. The dry method cell lamination preparation device is characterized by comprising the following steps:
the negative electrode unit preparation module comprises a negative electrode piece cutting device, wherein the negative electrode piece cutting device is used for cutting a negative electrode piece into a negative electrode piece unit;
the positive electrode unit preparation module comprises a positive electrode plate cutting device, wherein the positive electrode plate cutting device is used for cutting a positive electrode plate into positive electrode plate units;
the lamination unit preparation module is arranged at the downstream of the positive electrode unit preparation module and the negative electrode unit preparation module;
The lamination unit preparation module comprises a battery cell composite roller assembly and a lamination unit cutting device, wherein the lamination unit cutting device is arranged at the downstream of the battery cell composite roller assembly; the battery cell composite roller assembly is used for compositing the negative electrode plate unit, the negative electrode diaphragm, the positive electrode plate unit and the positive electrode diaphragm to form a battery cell base material; the lamination unit cutting device is used for cutting the cell base material to form a plurality of cell lamination units.
2. The dry cell stack fabrication device of claim 1, further comprising:
the negative electrode composite module is arranged at the upstream of the negative electrode unit preparation module;
the negative electrode composite module comprises a spraying lithium supplementing device and a negative electrode thermal composite roller assembly, and the negative electrode thermal composite roller is arranged at the downstream of the spraying lithium supplementing device;
the negative thermal composite roller assembly is used for compositing a negative A-surface membrane, a negative current collector and a negative B-surface membrane to form the negative pole piece;
the spraying lithium supplementing device is used for spraying lithium glue solution to one side, close to the negative electrode current collector, of the negative electrode A-surface membrane and the negative electrode B-surface membrane.
3. The dry method battery cell stack manufacturing device according to claim 2, wherein the negative electrode composite module comprises a negative electrode a mask sheet unreeling mechanism, a negative electrode B mask sheet unreeling mechanism and a negative electrode current collector unreeling mechanism, wherein the negative electrode a mask sheet unreeling mechanism, the negative electrode B mask sheet unreeling mechanism and the negative electrode current collector unreeling mechanism are all arranged at the upstream of the negative electrode thermal composite roller assembly;
the negative electrode A mask piece unreeling mechanism is used for unreeling the negative electrode A mask piece;
the negative electrode B mask piece unreeling mechanism is used for unreeling the negative electrode B mask piece;
the negative electrode current collector unreeling mechanism is used for unreeling the negative electrode current collector;
and/or, the dry method battery cell lamination preparation device further comprises an anode composite module, wherein the anode composite module is arranged at the upstream of the anode unit preparation module;
the positive electrode composite module comprises a positive electrode A mask piece unreeling mechanism, a positive electrode B mask piece unreeling mechanism, a positive electrode current collector unreeling mechanism and a positive electrode thermal composite roller assembly, wherein the positive electrode A mask piece unreeling mechanism, the positive electrode B mask piece unreeling mechanism and the positive electrode current collector unreeling mechanism are all arranged at the upstream of the positive electrode thermal composite roller assembly;
The positive electrode A mask sheet unreeling mechanism is used for unreeling the positive electrode A mask sheet;
the positive B mask piece unreeling mechanism is used for unreeling the positive B mask piece;
the positive current collector unreeling mechanism is used for unreeling the positive current collector;
the positive thermal composite roller assembly is used for compositing the positive A-side membrane, the positive current collector and the positive B-side membrane to form the positive pole piece.
4. The dry method cell stack manufacturing apparatus according to claim 1, wherein the negative electrode unit manufacturing module further comprises a negative electrode sheet conveying device and a negative electrode transfer manipulator, the negative electrode sheet conveying device is disposed downstream of the negative electrode sheet cutting device, and the negative electrode transfer manipulator is disposed downstream of the negative electrode sheet conveying device;
the negative electrode sheet conveying device is used for conveying the negative electrode sheet unit to a first station of the negative electrode transfer manipulator;
the negative electrode transfer manipulator is used for transferring the negative electrode sheet unit onto the negative electrode diaphragm;
the positive electrode unit preparation module further comprises a positive electrode sheet conveying device and a positive electrode transfer manipulator, wherein the positive electrode sheet conveying device is arranged at the downstream of the positive electrode sheet cutting device, and the positive electrode transfer manipulator is arranged at the downstream of the positive electrode sheet conveying device;
The positive plate conveying device is used for conveying the positive plate unit to a first station of the positive electrode transferring manipulator;
the positive electrode transfer manipulator is used for transferring the positive electrode plate unit to the positive electrode diaphragm.
5. The dry method battery cell stack manufacturing device according to claim 4, wherein the negative electrode unit manufacturing module further comprises a negative electrode piece conductive adhesive spraying device, the negative electrode piece conductive adhesive spraying device is arranged at the downstream of the negative electrode piece conveying device, and the negative electrode piece conductive adhesive spraying device corresponds to the second station of the negative electrode transfer manipulator;
the positive electrode unit preparation module further comprises a positive electrode piece conductive adhesive spraying device, wherein the positive electrode piece conductive adhesive spraying device is arranged at the downstream of the positive electrode piece conveying device, and the positive electrode piece conductive adhesive spraying device corresponds to the second station of the positive electrode transfer manipulator.
6. The dry method cell stack fabrication apparatus according to claim 5, wherein the negative unit fabrication module further comprises a negative diaphragm support member movable in a vertical direction, which is disposed downstream of the negative sheet conductive paste spraying apparatus, the negative sheet support member being disposed at a bottom of the negative diaphragm and corresponding to a third station of the negative transfer robot, the negative diaphragm support member supporting the negative diaphragm; and/or the number of the groups of groups,
The positive electrode unit preparation module further comprises a positive electrode diaphragm supporting member capable of moving in the vertical direction, the positive electrode diaphragm supporting member is arranged at the downstream of the positive electrode sheet conductive adhesive spraying device, the positive electrode sheet supporting member is arranged at the bottom of the positive electrode diaphragm and corresponds to the third station of the positive electrode transfer manipulator, and the positive electrode diaphragm supporting member plays a role in supporting the positive electrode diaphragm.
7. The dry method battery cell lamination preparation device according to claim 1, wherein the negative electrode unit preparation module further comprises a negative electrode foil tab detection device, which is arranged upstream of the negative electrode sheet cutting device, and is used for detecting the position of a tab die-cut on a negative electrode current collector; and/or the number of the groups of groups,
the positive electrode unit preparation module further comprises a positive electrode foil tab detection device which is arranged at the upstream of the positive electrode sheet cutting device; the positive electrode foil tab detection device is used for detecting the position of a tab which is die-cut on a positive electrode current collector.
8. The preparation method of the dry-method battery cell lamination is characterized by comprising the following steps of:
cutting the negative electrode plate into a negative electrode plate unit;
Cutting the positive plate into positive plate units;
thermally compounding the negative electrode plate unit, the negative electrode diaphragm, the positive electrode plate unit and the positive electrode diaphragm to form a cell substrate;
and cutting the cell substrate into a cell lamination unit.
9. The method of manufacturing a dry cell stack as set forth in claim 8, further comprising:
respectively spraying lithium glue solution on one side of the negative electrode A surface membrane and one side of the negative electrode B surface membrane, which are close to the negative electrode current collector; spraying conductive adhesive on the front and back sides of the negative current collector;
thermally compounding the negative electrode A-surface membrane, the negative electrode current collector and the negative electrode B-surface membrane to form the negative electrode piece;
spraying conductive adhesive on two sides of the positive current collector;
and thermally compounding the positive electrode A-surface membrane, the positive electrode current collector and the positive electrode B-surface membrane to form the positive electrode plate.
10. The method of claim 8, wherein prior to the step of thermally compounding the negative electrode sheet unit, negative electrode separator, positive electrode sheet unit, positive electrode separator to form a cell substrate, the method further comprises:
spraying conductive adhesive on one surface of the negative electrode plate unit and then bonding with the negative electrode diaphragm;
And spraying conductive adhesive on one surface of the positive plate unit and then bonding with the positive diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211090572.4A CN117673491A (en) | 2022-09-07 | 2022-09-07 | Dry-method battery cell lamination preparation device and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211090572.4A CN117673491A (en) | 2022-09-07 | 2022-09-07 | Dry-method battery cell lamination preparation device and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN117673491A true CN117673491A (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211090572.4A Pending CN117673491A (en) | 2022-09-07 | 2022-09-07 | Dry-method battery cell lamination preparation device and preparation method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN117673491A (en) |
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2022
- 2022-09-07 CN CN202211090572.4A patent/CN117673491A/en active Pending
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