CN111477974A - Staggered winding needle structure of square lithium battery sheet-making winding machine and battery cell winding method thereof - Google Patents
Staggered winding needle structure of square lithium battery sheet-making winding machine and battery cell winding method thereof Download PDFInfo
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- CN111477974A CN111477974A CN202010398763.1A CN202010398763A CN111477974A CN 111477974 A CN111477974 A CN 111477974A CN 202010398763 A CN202010398763 A CN 202010398763A CN 111477974 A CN111477974 A CN 111477974A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
- H01M10/0409—Machines for assembling batteries for cells with wound electrodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to a staggered winding needle structure of a square lithium battery slice winding machine, which comprises an upper fixed seat, a lower fixed seat, an outer movable needle mounting block, an inner movable needle mounting block, an outer movable needle, an inner movable needle, an outer fixed needle, an inner fixed needle and a winding needle spring, wherein an upper lug is arranged above the inner movable needle mounting block, a lower lug is arranged below the outer movable needle mounting block, the upper lug is driven by the winding needle spring to extend out of the upper fixed seat under normal conditions, the lower lug is driven by the winding needle spring to extend out of the lower fixed seat, the inner movable needle and the inner fixed needle are in an open state to facilitate penetration of a diaphragm, when a rotating shaft needs to rotate to wind a battery cell, the upper lug and the lower lug are pressed into the inner side of the fixed seat, the moving directions of the upper lug and the lower lug are opposite, the inner movable needle moves inwards to press the inner fixed needle to clamp the diaphragm, the outer movable needle moves outwards to maintain a reference inner size when the battery cell is, The inner fixed needle is opened while the outer movable needle is retracted to facilitate needle drawing, the staggered winding needle has reasonable structural design, and has the advantages of convenient diaphragm threading, stable clamping, convenient needle drawing and the like.
Description
Technical Field
The invention relates to the field of lithium ion battery manufacturing equipment, in particular to a staggered winding needle structure of a square lithium battery sheet-making winding machine and a battery cell winding method thereof.
Background
The film-making winder is a mechanical device for manufacturing the lithium ion battery, the lithium ion battery is composed of a positive plate, a negative plate, a diaphragm, a pole ear and the like, the lithium ion battery is divided into a square shape and a cylindrical shape according to the shape, so the film-making winder can be classified into the square film-making winder and the cylindrical film-making winder, among a plurality of components of the film-making winder, a winding needle is one of the most important components, the quality of the structure of the winding needle directly influences the winding and forming of an electric core, the winding needle has two functions, firstly, when the winding station is used, the winding needle is responsible for penetrating the diaphragm, the winding drives a left pole piece and a right pole piece to be wound together to form a naked electric core after the diaphragm is clamped stably, secondly, when the needle is pulled out and the discharging station is used, the existing winding needle is simple in structural design, the risks of scratching the diaphragm when the winding needle is taken out due to unstable closing of the winding needle or poor needle pulling after the electric, the unstable closing of the winding needle and the difficulty in drawing the needle are always the pain points in the industry and the directions of lifting and breaking through of manufacturers of winding machines and equipment.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a staggered winding needle structure of a square lithium battery sheet-making winding machine and a battery cell winding method thereof, and the specific technical scheme is as follows:
a staggered needle winding structure of a square lithium battery sheet winding machine comprises an upper fixing seat, a lower fixing seat, an outer movable needle mounting block, an inner movable needle mounting block, an outer movable needle, an inner movable needle, an outer fixed needle, an inner fixed needle and a needle winding spring, wherein the upper fixing seat and the lower fixing seat are fixedly connected into a whole and are fixedly connected with a rotating shaft of the winding machine, the inner cavity of the upper fixing seat and the lower fixing seat is provided with the outer movable needle mounting block and the inner movable needle mounting block, the outer movable needle mounting block and the inner movable needle mounting block are staggered, the front end of the outer movable needle mounting block is fixedly provided with the outer movable needle, the front end of the inner movable needle mounting block is fixedly provided with the inner movable needle, the outer movable needle covers the inner movable needle, the front end of the lower fixing seat is fixedly provided with the outer fixed needle, the inner fixed needle is fixedly arranged in the outer fixed needle, the upper convex block is arranged above the inner movable needle mounting block, the needle winding spring is arranged between the inner movable, the lower convex block is arranged below the outer moving needle mounting block, a rolling needle spring is mounted between the outer moving needle mounting block and the upper fixing seat, and the rolling needle spring drives the lower convex block to extend out of the lower fixing seat.
In a preferred embodiment of the present invention, the outer movable needle mounting block and the inner movable needle mounting block are sleeved with a ball guide sleeve for guiding.
As a preferred scheme of the invention, an elastic sheet is arranged in the outer fixed needle and drives the inner fixed needle to elastically clamp an isolation film of the battery core.
In a preferred embodiment of the present invention, the front ends of the outer movable needle, the outer fixed needle and the inner movable needle are inserted into a front support seat of the winding needle.
As a preferred scheme of the invention, the needle staggering mechanism further comprises a needle staggering ring assembly, wherein the needle staggering ring assembly comprises a needle staggering ring fixing seat, a needle staggering ring, blocking pieces, cam bearings, linear bearings and guide rods, the needle staggering ring fixing seat is fixedly sleeved on the rotating shaft, a plurality of guide rods are installed at the front end of the needle staggering ring fixing seat, the blocking pieces are installed at the front ends of the guide rods, the linear bearings are installed inside the needle staggering ring, the linear bearings are sleeved on the guide rods, the needle staggering ring is located between the needle staggering ring fixing seat and the blocking pieces, the cam bearings are installed above and below the needle staggering ring respectively, when the needle staggering ring moves backwards along the guide rods, the upper cam shaft bears the upper convex blocks to move downwards, the lower cam shaft bears the lower convex blocks to move upwards, and the outer moving needle and the.
As a preferable scheme of the invention, the front end of the guide rod is sleeved with a wrong needle spring, and the wrong needle spring is positioned between the wrong needle ring and the blocking piece.
As a preferable scheme of the invention, a plurality of guide rods are distributed around the central shaft of the staggered needle ring fixing seat in an equiangular and circumferential manner.
According to a preferable scheme of the invention, when the wrong needle ring assembly is positioned at the winding station, the winding driving block presses the front end surface of the wrong needle ring to move backwards, and when the wrong needle ring assembly is positioned at the needle drawing and discharging station, the drawing driving block presses the rear end surface of the wrong needle ring to move forwards.
A staggered winding needle electric core winding method of a square lithium battery sheet-making winding machine adopts the staggered winding needle structure to wind an electric core.
The invention has the beneficial effects that: under the normal state, the upper lug is driven by the winding needle spring to extend out of the upper fixing seat, the lower lug is driven by the winding needle spring to extend out of the lower fixing seat, the inner movable needle and the inner fixed needle are in a good opening state so that a diaphragm can penetrate into the inner movable needle and the inner fixed needle, when a rotating shaft needs to rotate to wind an electric core, the upper lug and the lower lug are pressed into the inner side of the fixing seat, the moving directions of the upper lug and the lower lug are opposite, the inner movable needle moves inwards to press the inner fixed needle and then clamp the diaphragm, the outer movable needle moves outwards to open the reference inner size when the electric core is rolled, after winding is finished, the upper lug, the lower lug resets the inner movable needle and the inner fixed needle opens and the outer movable needle retracts so that the needle can be conveniently drawn, and the staggered winding needle is reasonable.
Drawings
FIG. 1 is a perspective view of the present invention in the winding of a separator;
FIG. 2 is an exploded view of the dislocated needle winding arrangement of the present invention;
FIG. 3 is a front view of the offset winding pin structure with the parts exploded;
FIG. 4 is a perspective view of the internal needle mounting block of the present invention in engagement with an internal needle;
FIG. 5 is a sectional view of the outer needle covering the inner needle of the present invention;
FIG. 6 is a perspective view of the split needle ring assembly of the present invention;
FIG. 7 is an exploded view of the split needle ring assembly of the present invention;
FIG. 8 is a schematic view of the structure of the present invention showing the protruding upper and lower protrusions when the shift collar is moved forward;
FIG. 9 is a schematic view of the structure of the present invention in which the upper and lower protrusions are pressed when the wrong-stitch ring is moved backward;
FIG. 10 is a schematic view of the staggered needle winding arrangement of the present invention at various stations.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
As shown in figures 1-5, a staggered needle winding structure of a square lithium battery sheet winding machine comprises an upper fixed seat 1, a lower fixed seat 2, an outer movable needle mounting block 3, an inner movable needle mounting block 4, an outer movable needle 5, an inner movable needle 6, an outer fixed needle 7, an inner fixed needle 8 and a needle winding spring 9, wherein the upper fixed seat 1 and the lower fixed seat 2 are fixedly connected into a whole and fixedly connected with a rotating shaft 10 of the winding machine, when the rotating shaft 10 rotates, the upper fixed seat 1 and the lower fixed seat 2 are driven to synchronously rotate a winding battery cell, the inner cavities of the upper fixed seat 1 and the lower fixed seat 2 are provided with the outer movable needle mounting block 3 and the inner movable needle mounting block 4, the outer movable needle mounting block 3 and the inner movable needle mounting block 4 are staggered to avoid the outer movable needle mounting block 3 and the inner movable needle mounting block 4 from generating collision when moving, the front end of the outer movable needle mounting block 3 is fixedly provided with the outer movable needle 5, the front end of the inner movable needle mounting block 4 is fixedly provided with the inner movable needle 6, an outer fixed needle 5 is fixedly arranged at the front end of the lower fixed seat 2, an inner fixed needle 6 is fixedly arranged in the outer fixed needle 5, an upper convex block 41 is arranged above the inner movable needle mounting block 4, a needle rolling spring 9 is arranged between the inner movable needle mounting block 4 and the lower fixed seat 2, a spring plate is arranged in the lower fixed seat 2, one end of the needle rolling spring 9 at the inner movable needle mounting block 4 props against the other end of the spring plate and is inserted into the inner movable needle mounting block 4, therefore, the needle coiling spring 9 at the inner moving needle mounting block 4 drives the upper lug 41 to extend out of the upper fixed seat 1, the lower lug 31 is arranged below the outer moving needle mounting block 3, the needle coiling spring 9 is arranged between the outer moving needle mounting block 3 and the upper fixed seat 1, the spring plate is arranged in the upper fixed seat 1, one end of the needle coiling spring 9 at the outer moving needle mounting block 3 props against the spring plate, the other end is inserted into the outer moving needle mounting block 3, therefore, the needle winding spring 9 at the outer movable needle mounting block 3 drives the lower projection 31 to extend out of the lower fixed seat 2.
Specifically, in order to better guide the position accuracy of the movement of the outer movable needle mounting block 3 and the inner movable needle mounting block 4, ball guide sleeves 10 for guiding are sleeved in the outer movable needle mounting block 3 and the inner movable needle mounting block 4.
Specifically, 5 internally mounted shell fragment 11 of outer fixed needle, shell fragment 11 drives diaphragm 14 of fixed needle elasticity centre gripping electric core in the interior, avoid pressing from both sides too tightly to damage diaphragm 14, in addition, outer movable needle 5, outer fixed needle 7, the preceding supporting seat 12 of interior movable needle 6 front end cartridge book needle, the preceding supporting seat 12 of book needle plays the auxiliary stay, outer movable needle 5, outer fixed needle 7, interior movable needle 6 can stably rotate coiling electric core, and interior movable needle 6 can better keep pressing from both sides tight diaphragm at fixed state, outer movable needle 5 removes the external extension when coiling, outer movable needle 5, the reference inside dimension when outer fixed needle 7 keeps rolling electric core, outer movable needle 5 withdrawal after the coiling, outer movable needle 5 conveniently takes out the needle with the interior circumferential gap grow in electric core.
As shown in fig. 6 and 7, the staggered needle winding structure of the square lithium battery slice winding machine further includes a staggered needle ring assembly 13, the staggered needle ring assembly 13 includes a staggered needle ring fixing seat 131, a staggered needle ring 132, a blocking piece 133, a cam bearing 134, a linear bearing 135 and a guide rod 136, the staggered needle ring fixing seat 131 is fixedly sleeved on the rotating shaft 10, a plurality of guide rods 136 are installed at the front end of the staggered needle ring fixing seat 131, the plurality of guide rods 136 are distributed around the central axis of the staggered needle ring fixing seat at equal angles and circumferentially, the blocking piece 133 is installed at the front end of the guide rod 136, the linear bearing 135 is installed inside the staggered needle ring 132, the linear bearing 135 is sleeved on the guide rod 136, the staggered needle ring 132 is located between the staggered needle ring fixing seat 131 and the blocking piece 133, the staggered needle ring fixing seat 131, the staggered needle ring 132 and the blocking piece 133 are hollow rings, so that when the upper fixing seat 1 and the lower fixing seat 2 are connected, cam bearings 134 are respectively installed above and below the wrong needle ring 132, a wrong needle spring 137 is sleeved at the front end of the guide rod 136, and the wrong needle spring 137 is positioned between the wrong needle ring 132 and the blocking piece 133.
As shown in fig. 8-10, there are 3 stations in the winding needle area of the conventional winding machine, namely, a winding station a, a tail-ending rubberizing station B, a needle-drawing unloading station C, where the step to be completed by the winding station a is to form a wound electrical core, the step to be completed by the tail-ending rubberizing station B is to tail up rubberized paper to prevent the electrical core from scattering, and the step to be completed by the needle-drawing unloading station C is to draw out the winding needle to unload the electrical core from the winding needle area, the 3 stations are clamped at 120 degrees, and the corresponding process actions are the prior art, and the specific action flow is not described again, in the present invention, it needs to be emphasized how the staggered winding needle structure acts at the corresponding station after the staggered winding needle structure of the present invention is used, and when the winding needle and the staggered needle ring assembly are located in the winding station a, because the internal movable needle 6 and the internal fixed needle 8 are always in the initial states, the diaphragm firstly penetrates between the internal movable needle 6 and, then the winding driving block 15 presses the front end face of the wrong needle ring to move backwards, the upper cam bearing 134 presses the upper convex block 41 to move downwards, the lower cam bearing 134 presses the lower convex block 31 to move upwards, the inner movable needle 6 moves inwards to press the inner fixed needle so as to clamp the diaphragm, the outer movable needle 5 moves outwards to expand and maintain the reference internal dimension when the battery core is wound, after the battery core is wound, when the winding needle and the wrong needle ring assembly rotate to the needle drawing unloading station C, the driving block 16 is drawn out to press the rear end face of the wrong needle ring to move forwards, and the upper convex block, the lower convex block reset inner movable needle and the inner fixed needle are expanded to facilitate needle drawing.
A staggered winding needle electric core winding method of a square lithium battery sheet-making winding machine adopts the staggered winding needle structure to wind an electric core.
The above description is for the purpose of describing the invention in more detail with reference to specific preferred embodiments, and it should not be construed that the embodiments of the invention are limited to those described herein, and it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a needle structure is rolled up in dislocation of square lithium cell film-making winder which characterized in that: comprises an upper fixed seat, a lower fixed seat, an outer movable needle mounting block, an inner movable needle mounting block, an outer movable needle, an inner movable needle, an outer fixed needle, an inner fixed needle and a needle winding spring, wherein the upper fixed seat and the lower fixed seat are fixedly connected into a whole and are fixedly connected with a rotating shaft of a winding machine, the inner cavities of the upper fixed seat and the lower fixed seat are provided with the outer movable needle mounting block and the inner movable needle mounting block, the outer movable needle mounting block and the inner movable needle mounting block are staggered, the front end of the outer movable needle mounting block is fixedly provided with the outer movable needle, the front end of the inner movable needle mounting block is fixedly provided with the inner movable needle, the outer movable needle covers the inner movable needle, the front end of the lower fixed seat is fixedly provided with the outer fixed needle, the inner fixed needle is fixedly provided with the inner fixed needle, an upper convex block is arranged above the inner movable needle mounting block, the needle winding spring is arranged between the inner movable needle mounting block and the lower fixed seat, the needle winding spring drives the upper convex block to extend out from the, the winding needle spring drives the lower lug to extend out of the lower fixed seat.
2. The staggered winding needle structure of the square lithium battery sheet winding machine according to claim 1, characterized in that: and the ball guide sleeve for guiding is sleeved in the outer movable needle mounting block and the inner movable needle mounting block.
3. The staggered winding needle structure of the square lithium battery sheet winding machine according to claim 1, characterized in that: the outer fixed needle is internally provided with an elastic sheet which drives the inner fixed needle to elastically clamp the isolating membrane of the battery core.
4. The staggered winding needle structure of the square lithium battery sheet winding machine according to claim 1, characterized in that: the front ends of the outer movable needle, the outer fixed needle and the inner movable needle are inserted into a front support seat of the winding needle.
5. The staggered winding needle structure of the square lithium battery sheet winding machine according to claim 1, characterized in that: still include the wrong needle ring subassembly, the wrong needle ring subassembly includes wrong needle ring fixing base, wrong needle ring, the separation blade, cam bearing, linear bearing and guide bar, fixed suit in the rotation axis of wrong needle ring fixing base, many guide bars of wrong needle ring fixing base front end installation, guide bar front end installation separation blade, wrong needle ring internally mounted linear bearing, linear bearing suit is in the guide bar, wrong needle ring is located wrong needle ring fixing base, between the separation blade, cam bearing is installed respectively to wrong needle ring upper and lower side, when wrong needle ring moves backward along the guide bar, the upper cam axle is under pressure the epirelief and is moved down, the lower cam axle is under pressure the epirelief and is moved up, move the needle outward, interior action needle follows with.
6. The staggered winding needle structure of the square lithium battery sheet winding machine according to claim 5, characterized in that: the front end of the guide rod is sleeved with a wrong needle spring, and the wrong needle spring is positioned between the wrong needle ring and the blocking piece.
7. The staggered winding needle structure of the square lithium battery sheet winding machine according to claim 5, characterized in that: the plurality of guide rods are distributed around the central shaft of the staggered needle ring fixing seat at equal angles.
8. The staggered winding needle structure of the square lithium battery sheet winding machine according to claim 5, characterized in that: when the wrong needle ring assembly is positioned at a winding station, the winding driving block presses the front end face of the wrong needle ring to move backwards, and when the wrong needle ring assembly is positioned at a needle drawing and discharging station, the drawing driving block presses the rear end face of the wrong needle ring to move forwards.
9. The utility model provides a dislocation book needle electricity core coiling method of square lithium cell film-making winder which characterized in that: and (3) winding the battery cell by adopting the staggered winding needle structure of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010398763.1A CN111477974B (en) | 2020-05-12 | 2020-05-12 | Misplacement winding needle structure of sheet-making winding machine and electric core winding method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010398763.1A CN111477974B (en) | 2020-05-12 | 2020-05-12 | Misplacement winding needle structure of sheet-making winding machine and electric core winding method thereof |
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| Publication Number | Publication Date |
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| CN111477974A true CN111477974A (en) | 2020-07-31 |
| CN111477974B CN111477974B (en) | 2023-06-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284573A (en) * | 2022-03-04 | 2022-04-05 | 东莞市泽源机械有限公司 | Roll up needle mechanism and lithium cell coiling equipment |
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| CN114284573A (en) * | 2022-03-04 | 2022-04-05 | 东莞市泽源机械有限公司 | Roll up needle mechanism and lithium cell coiling equipment |
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