CN110061302B - High-speed lamination device and lamination method for lithium ion battery - Google Patents
High-speed lamination device and lamination method for lithium ion battery Download PDFInfo
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- CN110061302B CN110061302B CN201910451280.0A CN201910451280A CN110061302B CN 110061302 B CN110061302 B CN 110061302B CN 201910451280 A CN201910451280 A CN 201910451280A CN 110061302 B CN110061302 B CN 110061302B
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- lithium ion
- ion battery
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- lath
- lamination
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- 238000003475 lamination Methods 0.000 title claims abstract description 61
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 238000004804 winding Methods 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 7
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000000465 moulding Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 3
- 238000003411 electrode reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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 battery manufacturing, and particularly discloses a high-speed lamination device and a lamination method for a lithium ion battery, wherein the high-speed lamination device for the lithium ion battery comprises a plurality of support strips which are arranged at intervals along the vertical direction, adjacent support strips are connected through elastic pieces, each support strip is provided with an installation side surface perpendicular to the horizontal plane, two transmission shafts for winding a diaphragm of the lithium ion battery are arranged on the installation side surface, the two transmission shafts are arranged at intervals along the horizontal direction, the transmission shafts are cylindrical, and a space for placing pole pieces of the lithium ion battery is reserved between the two adjacent transmission shafts along the vertical direction. The high-speed lamination device of the lithium ion battery has the advantages of simple structure, convenient operation, high lamination efficiency and good molding quality.
Description
Technical Field
The invention relates to the technical field of battery manufacturing, in particular to a high-speed lamination device and a lamination method for a lithium ion battery.
Background
At present, the lithium ion battery is widely applied to the fields of consumer electronics, new energy automobiles and energy storage, and along with the rapid development of application markets and the continuous improvement of the requirements of users on products, how to produce the lithium ion battery with good safety performance, high specific energy, long cycle life and low cost becomes an important research direction in the field of lithium ion batteries.
Lithium ion batteries can be divided into two types according to the different tabletting modes: wound and laminated. The coiled battery has high processing speed and high efficiency, but has the following defects: 1. the winding type battery has certain requirements on the flexibility of the pole piece, so that the surface density of the pole piece is lower, and the energy density of the single battery is restricted; 2. the reaction of the winding type battery at the bending part of the pole piece is different from other positions, the uniformity of the electrode reaction is poor, and the performance is influenced and even potential safety hazards exist; 3. in order to fully wrap the cathode in the wound battery, a part of ineffective area exists in the cathode sheet, capacity is not provided, and the energy density of the battery is reduced. Compared with the laminated battery, the laminated battery has better electrode reaction uniformity and safer electrode reaction, and the pole piece can be coated thicker, so that the energy density of the battery is improved.
At present, lamination modes of lamination type batteries mainly comprise the following steps:
1. z-shaped lamination, namely, Z-shaped stacking positive and negative plates and diaphragms which are die-cut in advance from bottom to top, is simple in process, but has the problems of low lamination speed and low efficiency, prolongs the production period and increases the production cost;
2. the bag type lamination, the positive and negative pole pieces which are die-cut in advance are respectively packaged in the diaphragm bags and then are alternately stacked to form a stack, but the process is complex, the diaphragm bags are required to be manufactured, and the production efficiency is low;
3. the H-shaped lamination is similar to the Z-shaped lamination, but the positive and negative pole pieces are respectively provided with two lugs at two sides or two lugs at one side of the telecom, and the H-shaped lamination can effectively solve the problem that too thick lug welding areas are caused by too many lamination layers, but the lamination speed is still lower.
Disclosure of Invention
One object of an embodiment of the invention is to: the high-speed lamination device for the lithium ion battery is simple in structure, can effectively simplify lamination procedures, and improves production efficiency.
Another object of an embodiment of the invention is to: the lithium ion battery lamination method is simple to operate, high in lamination speed and high in production efficiency.
To achieve the purpose, the embodiment of the invention adopts the following technical scheme:
according to a first aspect, a high-speed lamination device for lithium ion batteries is provided, the high-speed lamination device comprises a plurality of support strips arranged at intervals along the vertical direction, the adjacent support strips are connected through elastic pieces, each support strip is provided with an installation side face perpendicular to the horizontal plane, two transmission shafts for winding diaphragms of the lithium ion batteries are arranged on the installation side face, the two transmission shafts are arranged at intervals along the horizontal direction, the transmission shafts are cylindrical, and a space for placing pole pieces of the lithium ion batteries is reserved between the two adjacent transmission shafts along the vertical direction.
As a preferable scheme of the lithium ion battery high-speed lamination device, the transmission shaft is detachably connected with the supporting plate strip.
As a preferred scheme of the high-speed lamination device of the lithium ion battery, the supporting lath comprises a detachable upper lath and a detachable lower lath, a first arc-shaped groove is concavely arranged on one side surface of the upper lath, a second arc-shaped groove is concavely arranged on one side surface of the lower lath, which is jointed with the upper lath, the first arc-shaped groove and the second arc-shaped groove jointly form a mounting hole for mounting the transmission shaft, and one end of the transmission shaft is spliced in the mounting hole.
As a preferable scheme of the high-speed lamination device of the lithium ion battery, the upper lath and the lower lath are bonded through an adhesive; or alternatively, the first and second heat exchangers may be,
the upper batten is connected with the lower batten through bolts.
As a preferable scheme of the high-speed lamination device of the lithium ion battery, the distance between the two transmission shafts on each supporting lath is adjustable.
As a preferable scheme of the high-speed lamination device of the lithium ion battery, a plurality of mounting holes are formed in the supporting plate strip along the horizontal direction.
As a preferable scheme of the high-speed lamination device of the lithium ion battery, the high-speed lamination device further comprises a limiting assembly for limiting the support plate strip to move along the horizontal direction.
As a preferable scheme of the high-speed lamination device of the lithium ion battery, the upper and lower tangential planes of the transmission shaft are respectively flush with the upper surface and the lower surface of the supporting lath.
In a second aspect, there is also provided a lithium ion battery lamination method, using the lithium ion battery high-speed lamination device, comprising the steps of:
step S100, providing a positive plate and a negative plate which are die-cut;
step 200, continuously winding the diaphragm on a transmission shaft from top to bottom to form a continuous Z-shaped diaphragm;
step S300, alternately placing the positive electrode plate and the negative electrode plate on the diaphragm;
and S400, pressing the supporting plate strip along the vertical direction so as to overcome the elasticity of the elastic piece, and enabling the diaphragm, the positive electrode piece and the negative electrode piece to be pressed tightly to form a cell blank.
As a preferred embodiment of the lithium ion battery lamination method, step S500 is provided after step S400, and the pressure applied to the support plate strip is removed after the cell blank is removed.
As a preferable scheme of the lithium ion battery lamination method, the tension of the diaphragm is adjusted in the winding process of the diaphragm, so that the diaphragm is in a tensioning state before the positive electrode plate and the negative electrode plate are placed.
The embodiment of the invention has the beneficial effects that: through setting up the elastic component, can prop up the supporting plate strip when not exerting pressure, the winding of the diaphragm of being convenient for and the laying of pole piece, when exerting pressure to the supporting plate strip, because the elastic component can be compressed, consequently can not hinder the lamination of diaphragm and pole piece, this device can twine the diaphragm into the structure of continuous Z style of calligraphy, and then can make the pole piece once place completely and fold again and press, has greatly promoted lamination work efficiency.
Drawings
The invention is described in further detail below with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a high-speed lamination device for a lithium ion battery according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a high-speed lamination device for a lithium ion battery according to another embodiment of the invention.
Fig. 3 is a schematic structural view of a limiting assembly according to another embodiment of the present invention.
Fig. 4 is a schematic top view of fig. 3 (the base and first plate not shown).
In the figure:
1. a support slat; 11. an upper slat; 12. a lower slat; 13. a mounting side; 2. an elastic member; 3. a transmission shaft; 4. a diaphragm; 5. a negative electrode sheet; 6. a positive plate; 7. a roll of separator; 8. a diaphragm support shaft; 9. a limit component; 91. a base; 92. a limiting plate; 921. a first plate; 922. a second plate; 923. and (5) a screw.
Detailed Description
In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
As shown in fig. 1 (refer to fig. 4 simultaneously), the embodiment of the invention discloses a high-speed lamination device for lithium ion batteries, which comprises a plurality of support battens 1 arranged at intervals along the vertical direction, wherein adjacent support battens 1 are connected through elastic members 2, each support batten 1 is provided with a mounting side surface 13 perpendicular to the horizontal plane, two transmission shafts 3 for winding a diaphragm 4 of the lithium ion battery are arranged on the mounting side surface 13, the two transmission shafts 3 are arranged at intervals along the horizontal direction, each transmission shaft 3 is cylindrical, and a space for placing pole pieces of the lithium ion battery is arranged between the two adjacent transmission shafts 3 along the vertical direction. Through setting up elastic component 2, can prop up supporting plate strip 1 when not exerting pressure, the winding of diaphragm 4 and the laying of pole piece of being convenient for are exerting pressure to supporting plate strip 1, because elastic component 2 can be compressed, consequently can not hinder the lamination of diaphragm 4 and pole piece, this device can twine diaphragm 4 into continuous Z style of calligraphy structure, and then can make the pole piece place once completely and fold again and press, has greatly promoted lamination work efficiency.
In this embodiment, the upper and lower tangential planes of the transmission shaft 3 are respectively flush with the upper surface and the lower surface of the support board 1, so that the support board 1 does not obstruct the lamination operation of the separator 4, the positive electrode sheet 6 and the negative electrode sheet 5.
In one embodiment, the transmission shaft 3 is detachably connected to the support board 1. The transmission shaft 3 and the supporting lath 1 which are detachably connected can reduce the manufacturing difficulty, and meanwhile, the transmission shaft 3 can be replaced in time when damaged, so that the replacement cost is reduced.
In this embodiment, the surface of the drive shaft 3 is provided smoothly. The cylindrical transmission shaft 3 and the smooth structural design of the surface can effectively prevent the transmission shaft 3 from scraping the diaphragm 4, and can reduce the fold of the diaphragm 4 during lamination.
In an embodiment, the supporting board 1 includes a detachable upper board 11 and a detachable lower board 12, a first arc-shaped groove is concavely formed on a side surface of the upper board 11, which is attached to the lower board 12, a second arc-shaped groove is concavely formed on a side surface of the lower board 12, which is attached to the upper board 11, the first arc-shaped groove and the second arc-shaped groove together form a mounting hole for mounting the transmission shaft 3, and one end of the transmission shaft 3 is inserted into the mounting hole. The separated supporting lath 1 is more convenient for the installation of the transmission shaft 3, effectively prevents the transmission shaft 3 from protruding outside the supporting lath 1, and ensures that the transmission shaft 3 can not influence the work of the battery lamination.
In this embodiment, the upper slat 11 and the lower slat 12 are bonded by adhesive. The mode of bonding and fixing can reduce the use of the fixing piece, reduce the cost and facilitate the disassembly and assembly. Of course, in order to increase the connection strength of the upper and lower strips 11, 12, the upper strip 11 is connected to the lower strip 12 by means of bolts.
In one embodiment, the distance between the two transmission shafts 3 on each supporting strip 1 is adjustable. Through setting up transmission shaft 3 as interval adjustable structure, can satisfy the lamination operation of not unidimensional battery, application scope is wide, can effectively reduce manufacturing cost.
In this embodiment, the supporting strip 1 is provided with a plurality of mounting holes along the horizontal direction. Through setting up a plurality of mounting holes, install transmission shaft 3 in different mounting holes can realize the interval adjustment between two transmission shafts 3.
In one embodiment, as shown in fig. 2 to 4, the high-speed lamination device of the lithium ion battery further comprises a limiting assembly 9 for limiting the movement of the support lath 1 along the horizontal direction. Through setting up spacing subassembly 9, can prevent effectively that diaphragm 4, positive plate 6 and negative plate 5 of battery from taking place the removal of horizontal direction when being folded, prevent promptly that supporting lath 1 from taking place the removal of horizontal direction.
Specifically, the limiting assembly 9 includes a base 91 and limiting plates 92 fixed on the base 91 at intervals, the two limiting plates 92 are arranged in parallel, and the supporting strip 1 is located between the two limiting plates 92.
The limiting plate 92 includes a first plate 921 and a second plate 922 vertically connected, the first plate 921 being connected to the base 91 by a screw 923, the second plate 922 being perpendicular to the base 91.
The first plate 921 is provided with a waist-shaped hole, the waist-shaped hole extends along the length direction of the supporting lath 1, the base 91 is provided with a threaded hole, and the screw 923 passes through the waist-shaped hole and is screwed in the threaded hole. This design allows for adjustment of the spacing between the two second plates 922 to accommodate different lengths of support slats 1, improving versatility of the spacing assembly 9.
Two screw holes are formed in the base 91 corresponding to the waist-shaped holes of each first plate 921, and each first plate 921 is connected with the base 91 through two screws 923, so that the stability of connection can be improved.
The cross section of the second plate 922 is U-shaped, and the openings of the U-shaped structures of the two second plates 922 are opposite to each other, and the two ends of the supporting lath 1 are respectively inserted into the U-shaped structures, so that the U-shaped structures are utilized to carry out movement restriction in the horizontal direction.
In an embodiment, the supporting strip 1 is provided with an accommodating groove corresponding to the elastic piece 2, two ends of the elastic piece 2 are respectively fixed in the accommodating groove, and the accommodating groove can accommodate the compressed elastic piece 2 by arranging the accommodating groove, so that the elastic piece 2 does not affect the lamination of the diaphragm 4, the positive plate 6 and the negative plate 5 when the supporting strip 1 is pressed, and when the diaphragm 4 is not arranged, the adjacent supporting strips 1 can be completely attached, namely, the adjacent two supporting strips 1 can be pressed to be completely gapless when the pressure is applied.
In this embodiment, the elastic member 2 is a spring.
In order to prevent the spring from being separated from the supporting strip 1, both ends of the spring may be spot-welded into the receiving groove, or fixed into the receiving groove by a fastener such as a screw.
The embodiment of the invention also provides a lithium ion battery lamination method, which comprises the following steps:
step S100, providing a positive plate 6 and a negative plate 5 which are die-cut;
step 200, continuously winding the diaphragm 4 on the transmission shaft 3 from top to bottom to form a continuous Z-shaped diaphragm 4;
step S300, alternately placing the positive electrode sheet 6 and the negative electrode sheet 5 on the separator 4;
and S400, pressing the supporting strip 1 in the vertical direction to overcome the elasticity of the elastic piece 2, so that the diaphragm 4, the positive electrode plate 6 and the negative electrode plate 5 are pressed to form a cell blank.
By placing all the pole pieces once again on the Z-shaped winding diaphragm 4, the piece-by-piece stacking of the traditional process can be avoided, the lamination speed is effectively increased, the lamination efficiency is improved, and meanwhile, the position of the diaphragm 4 is not required to be adjusted after the diaphragm 4 is wound due to the fact that the position of the transmission shaft 3 on the supporting plate strip 1 is horizontal, and the operation steps are reduced.
Preferably, step S500 is provided after step S400, and the pressure applied to the supporting strip 1 is removed after the cell blank is removed. The design can effectively prevent the elastic piece 2 from expanding the stacked and formed cell blank again after the pressure is removed.
When the cell blank is taken down, as one end of the transmission shaft 3, which is far away from the supporting lath 1, is arranged in a suspended manner, the stacked cell blank can be directly drawn out, the whole device is not required to be dismantled, the whole device can rapidly enter the next work of winding and stacking the diaphragm 4, and the production efficiency is improved.
In one embodiment, the tension of the separator 4 is adjusted during the winding process of the separator 4, so that the separator 4 is in tension before the positive electrode sheet 6 and the negative electrode sheet 5 are placed. The operation mode can effectively avoid the damage of the diaphragm 4, because the diaphragm 4 is pulled in winding to adjust the tensioning state, but not the distance between the transmission shafts 3 is changed to adjust the tensioning state of the diaphragm 4, the adjusting state is easier to control the force, and the damage of the diaphragm 4 is effectively prevented.
Before the diaphragm 4 is wound, a diaphragm support shaft 8 is arranged on one side of the high-speed lamination device of the lithium ion battery, a diaphragm coil 7 is arranged on the diaphragm support shaft 8, and the diaphragm 4 on the diaphragm coil 7 is continuously wound on the transmission shaft 3 from top to bottom after being pulled out.
In the description herein, it should be understood that the terms "upper," "lower," "right," and the like are used for convenience in description and simplicity of operation only, and are not to be construed as limiting the invention, as the devices or elements referred to must have, be constructed or operated in a particular orientation. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.
In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (8)
1. The high-speed lamination device for the lithium ion battery is characterized by comprising a plurality of support strips which are arranged at intervals along the vertical direction, wherein adjacent support strips are connected through elastic pieces, each support strip is provided with an installation side surface which is perpendicular to the horizontal plane, two transmission shafts which are used for winding a diaphragm of the lithium ion battery are arranged on the installation side surface, the two transmission shafts are arranged at intervals along the horizontal direction, each transmission shaft is cylindrical, and a space for placing a pole piece of the lithium ion battery is arranged between the two adjacent transmission shafts along the vertical direction;
the transmission shaft is detachably connected with the supporting lath;
the supporting lath comprises a detachable upper lath and a detachable lower lath, a first arc-shaped groove is concavely formed in one side surface, which is attached to the lower lath, of the upper lath, a second arc-shaped groove is concavely formed in one side surface, which is attached to the upper lath, of the lower lath, the first arc-shaped groove and the second arc-shaped groove jointly form a mounting hole for mounting the transmission shaft, and one end of the transmission shaft is inserted into the mounting hole;
the supporting lath is provided with an accommodating groove corresponding to the elastic piece, and two ends of the elastic piece are respectively fixed in the accommodating groove.
2. The high-speed lamination device of lithium ion batteries according to claim 1, wherein the upper plate strip and the lower plate strip are bonded by an adhesive; or alternatively, the first and second heat exchangers may be,
the upper batten is connected with the lower batten through bolts.
3. The high-speed lamination device for lithium ion batteries according to claim 1, wherein a distance between two transmission shafts on each support slat is adjustable.
4. A lithium ion battery high speed lamination device according to any one of claims 1 to 3, further comprising a limit assembly that limits movement of the support batten in a horizontal direction.
5. A lithium ion battery high speed lamination apparatus according to any one of claims 1 to 3, wherein upper and lower tangential surfaces of the drive shaft are flush with upper and lower surfaces of the support batten, respectively.
6. A method of stacking lithium ion batteries, characterized in that a lithium ion battery high-speed stacking device according to any one of claims 1 to 5 is used, comprising the steps of:
step S100, providing a positive plate and a negative plate which are die-cut;
step 200, continuously winding the diaphragm on a transmission shaft from top to bottom to form a continuous Z-shaped diaphragm;
step S300, alternately placing the positive electrode plate and the negative electrode plate on the diaphragm;
and S400, pressing the supporting plate strip along the vertical direction so as to overcome the elasticity of the elastic piece, and enabling the diaphragm, the positive electrode piece and the negative electrode piece to be pressed tightly to form a cell blank.
7. The method of claim 6, wherein step S500 is provided after step S400, and the cell blank is removed and the pressure applied to the support batten is withdrawn.
8. The method of claim 6, wherein the tension of the separator is adjusted during the winding of the separator such that the separator is in tension prior to placement of the positive and negative electrode sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910451280.0A CN110061302B (en) | 2019-05-28 | 2019-05-28 | High-speed lamination device and lamination method for lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910451280.0A CN110061302B (en) | 2019-05-28 | 2019-05-28 | High-speed lamination device and lamination method for lithium ion battery |
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| CN110061302A CN110061302A (en) | 2019-07-26 |
| CN110061302B true CN110061302B (en) | 2024-04-02 |
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| CN113314768A (en) * | 2020-02-27 | 2021-08-27 | 宝武炭材料科技有限公司 | Lithium cell electricity core lamination device |
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| WO2007082863A1 (en) * | 2006-01-17 | 2007-07-26 | Nilar International Ab | A battery stack arrangement |
| CN206194904U (en) * | 2016-08-18 | 2017-05-24 | 无锡丰晟科技有限公司 | Lithium - ion battery pole pieces lamination equipment |
| CN207183444U (en) * | 2017-07-28 | 2018-04-03 | 宣城市泰宇电池有限公司 | A kind of lamination device of lithium battery pole slice |
| CN209912983U (en) * | 2019-05-28 | 2020-01-07 | 惠州亿纬锂能股份有限公司 | High-speed lamination device for lithium ion battery |
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2019
- 2019-05-28 CN CN201910451280.0A patent/CN110061302B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007082863A1 (en) * | 2006-01-17 | 2007-07-26 | Nilar International Ab | A battery stack arrangement |
| CN206194904U (en) * | 2016-08-18 | 2017-05-24 | 无锡丰晟科技有限公司 | Lithium - ion battery pole pieces lamination equipment |
| CN207183444U (en) * | 2017-07-28 | 2018-04-03 | 宣城市泰宇电池有限公司 | A kind of lamination device of lithium battery pole slice |
| CN209912983U (en) * | 2019-05-28 | 2020-01-07 | 惠州亿纬锂能股份有限公司 | High-speed lamination device for lithium ion battery |
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