CN114291636A - Pole piece composite device and composite pole piece - Google Patents
Pole piece composite device and composite pole piece Download PDFInfo
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- CN114291636A CN114291636A CN202111645342.5A CN202111645342A CN114291636A CN 114291636 A CN114291636 A CN 114291636A CN 202111645342 A CN202111645342 A CN 202111645342A CN 114291636 A CN114291636 A CN 114291636A
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- pressing roller
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- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 claims abstract description 153
- 239000002184 metal Substances 0.000 claims abstract description 153
- 238000013329 compounding Methods 0.000 claims abstract description 40
- 238000003825 pressing Methods 0.000 claims description 58
- 238000005520 cutting process Methods 0.000 claims description 35
- 238000004804 winding Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 11
- 229910052744 lithium Inorganic materials 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
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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
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Abstract
The invention provides a pole piece compounding device and a compound pole piece, wherein the pole piece compounding device comprises: the unwinding assembly comprises a first unwinding assembly and a second unwinding assembly, and the first unwinding assembly and the second unwinding assembly are both used for outputting a first metal belt; the feeding assembly is positioned between the first unwinding assembly and the second unwinding assembly and used for conveying a second metal belt; the composite assembly is used for compounding the first metal belt and the second metal belt into a whole. The invention solves the problems that the pole piece compounding in the prior art needs manual operation, the production efficiency is low and the operation is complex.
Description
Technical Field
The invention relates to the technical field of battery production equipment, in particular to a pole piece compounding device and a compound pole piece.
Background
Compared with traditional lead-acid batteries, nickel-hydrogen batteries, nickel-cadmium batteries and the like, the lithium ion batteries have the advantages of high energy density, small volume, long service life, small self-discharge, no memory effect, zero environmental pollution and the like, and are widely applied to a plurality of mobile devices in the fields of national defense, industry and civilian use. However, with the continuous improvement of the performance requirements of high-end digital lithium batteries and power batteries, the manufacturing requirements of lithium batteries are more and more strict.
The pole piece of the existing lithium battery is formed by additionally arranging a strip-shaped current collector on a cut sheet-shaped lithium battery, and the lithium battery negative pole piece with the structure is prepared by cutting a coiled lithium piece into sheets by a sheet cutting machine according to the required size, manually folding the lithium piece in half, additionally arranging a strip-shaped nickel strip current collector at the middle position of the lithium piece, and manually rolling the sheet into a pole piece. However, the existing pole piece has the following problems: because the widths of the central nickel strap current collector and the lithium sheet are different, the heat transfer of the whole negative electrode is uneven, and the danger is easily caused by poor heat transfer when the battery discharges at high power; in addition, the prior art needs manual operation, has low production efficiency, complex operation and difficult control, and is difficult to realize continuous and automatic machine production.
Disclosure of Invention
The invention aims to solve the problems that pole piece compounding in the prior art needs manual operation, the production efficiency is low and the operation is complex.
In order to solve the above problems, a first aspect of the present invention provides a pole piece combining device, including:
the unwinding assembly comprises a first unwinding assembly and a second unwinding assembly, and the first unwinding assembly and the second unwinding assembly are both used for outputting a first metal belt;
the feeding assembly is positioned between the first unwinding assembly and the second unwinding assembly and used for conveying a second metal belt;
the composite assembly is used for compounding the first metal belt and the second metal belt into a whole.
Further, the composite component comprises a first pressing roller and a second pressing roller which are arranged oppositely, the first pressing roller and the second pressing roller can move relatively so as to approach or separate from each other, and at least one of the first pressing roller and the second pressing roller can rotate around the axis of the first pressing roller and the second pressing roller under the driving of the driving component.
Further, the composite component further comprises a first driving component, a second driving component and a fixing frame, the first pressing roller and the second pressing roller are arranged on the fixing frame, the first driving component is used for driving the first pressing roller to be close to or far away from the second pressing roller, and the second driving component is used for driving the second pressing roller to rotate around the axis direction of the second driving component.
Furthermore, a guide rail is arranged on the fixed frame, a sliding seat is arranged on the guide rail, the sliding seat can move along the guide rail, and the first pressing roller is arranged on the sliding seat.
Furthermore, the pan feeding subassembly includes centre gripping subassembly, cutting means and pan feeding drive assembly, the centre gripping subassembly with cutting means installs on the mount pad, the centre gripping subassembly is used for the centre gripping the second strap, cutting means is used for cutting off the second strap, pan feeding drive assembly is used for the drive the mount pad removes, with the second strap input to compound subassembly.
Further, the clamping assembly comprises a clamping portion and a third driving assembly, the clamping portion is used for clamping the second metal belt, and the third driving assembly is used for driving the clamping portion to be close to or far away from the composite assembly.
Furthermore, the cutting assembly comprises a cutter and a fourth driving assembly, the cutter is used for cutting the second metal belt, and the fourth driving assembly is used for driving the cutter to cut the second metal belt.
Further, the relative movement direction between the first pressing roller and the second pressing roller is perpendicular to the direction of conveying the second metal strip by the feeding assembly.
Further, the tension adjusting device comprises a tension adjusting assembly used for adjusting the first metal belt, the tension adjusting assembly comprises a first tension adjusting assembly and a second tension adjusting assembly, the first tension adjusting assembly is arranged between the first unreeling assembly and the composite assembly, and the second tension adjusting assembly is arranged between the second unreeling assembly and the composite assembly.
Further, the first tension adjusting assembly comprises a first fixed roller, a first floating roller and a fifth driving assembly, the first metal belt runs between the first fixed roller and the first floating roller, and the fifth driving assembly is used for adjusting the tension between the first floating roller and the first fixed roller;
the second tension adjusting assembly comprises a second fixed roller, a second floating roller and a sixth driving assembly, the first metal belt runs between the second fixed roller and the second floating roller, and the sixth driving assembly is used for adjusting the tension between the second floating roller and the second fixed roller.
The invention provides a composite pole piece coil stock, which is prepared by adopting the pole piece compounding device in any one of the first aspects, and comprises a first metal belt and a second metal belt, wherein the second metal belt is clamped between the two first metal belts, and the second metal belt is arranged at intervals or continuously along the winding direction.
According to the pole piece compounding device, the two unwinding assemblies are used for respectively outputting the first metal strips, the feeding assembly is used for outputting the second metal strips, the first metal strips and the second metal strips are integrated at the position of the compounding assembly and are rolled by the compounding assembly to be compounded into a whole, so that the pole piece compounding process is reduced, the two first metal strips are compounded on the second metal strip at the same time, the extension and deformation of the front side and the back side of the compound pole piece can be kept consistent, and the performance of the compound pole piece is improved; the pole piece compounding device can realize continuous rolling operation, is uniform in stress and convenient to operate, can improve the compounding efficiency and precision compared with manual operation, and is beneficial to reducing the production cost of the compound pole piece; in addition, the pole piece compounding device can adjust the width of the second metal belt clamped in the middle, can produce the compound pole piece with the second metal belt continuously or at intervals, can meet the requirements of different customers on the compound pole piece, has wider application range, and is beneficial to further reducing the production cost of the compound pole piece.
Drawings
FIG. 1 is a schematic structural diagram of a pole piece combining device according to an embodiment of the present disclosure;
FIG. 2 is a schematic front view of a composite assembly according to an embodiment of the present invention;
FIG. 3 is a perspective view of a composite assembly according to an embodiment of the present invention;
FIG. 4 is a schematic top view of the feeding assembly according to the embodiment of the present disclosure;
FIG. 5 is a schematic perspective view of a feeding assembly according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a composite pole piece roll material in an embodiment of the invention.
Description of reference numerals:
1-a first unwinding assembly; 2-feeding component; 3-a composite component; 4-a first metal strip; 5-a second metal strip; 6-a first tension adjustment assembly; 7-a second tension adjustment assembly; 8, a second unwinding assembly;
21-a clamping assembly; 22-a cutting assembly; 23-a feeding driving assembly;
31-a fixing frame; 32-a first press roll; 33-a second press roll; 34 a first drive assembly; 35-a second drive assembly; 36-a first sliding seat;
61-a first dancer; 62-a fifth drive assembly; 71-a second dancer; 72-a sixth drive assembly;
211-a clamping portion; 212-a third drive assembly; 221-a fourth drive assembly; 222-a frame body; 223-cutter seat.
Detailed Description
The technical solutions in the embodiments of the present application will be described in detail and clearly with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the description of the embodiments of the present application, the description of the term "some preferred embodiments" means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one preferred embodiment or preferred example of the present invention. Throughout this specification, the schematic representations of the terms used above do not necessarily refer to the same implementation or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In order to further illustrate the present invention, the following examples are given to further illustrate the present invention.
With reference to fig. 1, an embodiment of the present application provides a pole piece composite device, including: unreel subassembly, pan feeding subassembly 2 and compound subassembly 3, unreel subassembly, pan feeding subassembly 2 and compound subassembly 3 and all install on support (not mark in the picture), wherein: the unwinding assembly comprises a first unwinding assembly 1 and a second unwinding assembly 8, and the first unwinding assembly 1 and the second unwinding assembly 8 are used for outputting a first metal belt 4;
in this embodiment, the feeding assembly 2 is disposed between the first unwinding assembly 1 and the second unwinding assembly 8, and is used for conveying the second metal belt 5;
two first metal strips 4 output from the first unwinding assembly 1 and the second unwinding assembly 8 and a second metal strip 5 output from the feeding assembly 2 are input into the composite assembly 3, the first metal strips 4 and the second metal strip 5 are arranged in a stacked mode in the composite assembly 3, the second metal strip 5 is located between the two first metal strips 4, and the composite assembly 3 is used for combining the first metal strips 4 and the second metal strip 5 into a whole.
According to the pole piece compounding device, the two unreeling assemblies respectively output the first metal strips, the feeding assembly outputs the second metal strips, the first metal strips and the second metal strips are gathered into a whole at the compounding assembly, and then the first metal strips and the second metal strips are compounded into a whole through rolling of the compounding assembly, so that the pole piece compounding process is reduced, the two first metal strips are compounded on the second metal strips simultaneously, the extension and deformation of the front side and the back side of the compound pole piece can be kept consistent, and the performance of the compound pole piece is improved; this pole piece set composite can realize continuous roll-in operation, and the atress is even, and the operation of being convenient for compares with manual operation, can improve compound efficiency and precision, is favorable to reducing the manufacturing cost of compound pole piece.
Referring to fig. 2 to 3, the composite assembly 3 includes a fixing frame 31, a first pressing roller 32, a second pressing roller 33, a first driving assembly 34 and a second driving assembly 35, the first pressing roller 32 and the second pressing roller 33 are oppositely disposed and installed in the fixing frame 31, and the first pressing roller 32 and the second pressing roller 33 are relatively movable. The second pressing roller 33 of this embodiment is fixedly installed on the fixing frame 31, two ends of the first pressing roller 32 are installed on the first sliding seat 36, the fixing frame 31 is provided with a first guide rail (not marked in the figure) extending along the vertical direction, the first sliding seat 36 is slidably connected with the first guide rail along the extending direction of the first guide rail, and when the first sliding seat 36 moves along the first guide rail, the first pressing roller 32 located thereon can be driven to be close to or far away from the second pressing roller 33.
The first driving assembly 34 is installed on the fixed frame 31, and the first driving assembly 34 is located above the first press roll 32, the first driving assembly 34 includes a first air cylinder, a rod body of the first air cylinder is fixedly connected with the first sliding seat 36 to drive the sliding seat 36 to slide along the first guide rail, so that the first press roll 32 moves along the vertical direction, the first press roll 32 is close to or away from the second press roll 33, and the first metal strip 4 and the second metal strip 5 located between the first press roll 32 and the second press roll 33 are clamped or loosened.
When the composite assembly 3 is in the non-rolling state, the first press roller 32 is in the lifting state, a certain distance is reserved between the first press roller 32 and the second press roller 33, and the first metal strip 4 and the second metal strip 5 penetrate through the space between the first press roller 32 and the second press roller 33 and are located between the first press roller 32 and the second press roller 33.
When the first metal strip 4 and the second metal strip 5 need to be compounded, the first driving assembly 34 drives the first pressing roller 32 to move downwards along the vertical direction, so that the first pressing roller 32 moves towards the second pressing roller 33 to clamp the first metal strip 4 and the second metal strip 5 between the first pressing roller 32 and the second pressing roller 33, and after the first metal strip is compressed, the second driving assembly 35 drives the second pressing roller 33 to rotate around the axis direction of the second driving assembly and drives the first pressing roller 32 to rotate around the axis direction of the second driving assembly, so that continuous rolling operation is realized.
As shown in fig. 4 to 5, the feeding assembly 2 is located between the first unwinding assembly 1 and the second unwinding assembly 8, the feeding assembly 2 includes a clamping assembly 21, a cutting assembly 22 and a feeding driving assembly 23, the feeding driving assembly 23 includes a mounting base, a second sliding base, a second guide rail, a second motor and a first ball screw (not marked in the figure), the second guide rail extends along a horizontal direction (i.e., a second direction), and is fixed on the bracket, the mounting base is fixedly mounted on the second sliding base, the second sliding base is slidably connected with the second guide rail along the extending direction of the second guide rail, so as to drive the mounting base to move along the horizontal direction. The second motor is fixedly installed on the support, the lead screw of the first ball screw is arranged along the horizontal direction, the end part of the lead screw of the first ball screw is connected with the motor shaft of the second motor, the second motor can drive the lead screw of the first ball screw to rotate, the nut of the first ball screw is fixedly connected with the second sliding seat, the second motor can drive the second sliding seat to slide along the second guide rail through the first ball screw, the mounting seat is moved along the horizontal direction, and the mounting seat is close to or far away from the composite component 3.
The clamping assembly 21 and the cutting assembly 22 are both mounted on the mounting seat, and when the mounting seat moves along the horizontal direction, the clamping assembly 21 and the cutting assembly 22 can also be driven to move along the horizontal direction, so that the clamping assembly 21 and the cutting assembly 22 are close to or far away from the composite assembly 3.
The clamping assembly 21 includes a clamping portion 211 and a third driving assembly 212, and the third driving assembly 212 drives the clamping portion 211 to reciprocate in the horizontal direction. The clamping portion 211 is fixed to the mount base, and the clamping portion 211 can clamp or unclamp the second metal strip 5. The third driving assembly 212 includes a third sliding seat, a third guide rail, a third motor and a second ball screw (none of which is labeled in the figure), the third guide rail extends along the horizontal direction and is fixed on the mounting seat, the clamping portion 211 is fixedly mounted on the third sliding seat, and the third sliding seat is slidably connected with the third guide rail along the extending direction of the third guide rail, so as to drive the clamping portion 211 to reciprocate along the horizontal direction. Third motor fixed mounting is on the mount pad, the lead screw of second ball screw sets up along the horizontal direction, and the lead screw tip and the third motor of second ball screw are connected, make the lead screw that the third motor can drive second ball screw rotate, the nut and the third sliding seat fixed connection of second ball screw, so that the third motor can drive the third sliding seat through second ball screw and slide along the third guide rail, realize that clamping part 211 removes along the horizontal direction, thereby make clamping part 211 be close to or keep away from composite set 3.
The cutting assembly 22 includes a cutting blade (not shown), a fourth driving assembly 221, a frame body 222 and a cutting blade seat 223, wherein the fourth driving assembly 221 drives the cutting blade to reciprocate along a vertical direction. The cutter comprises a first cutter and a second cutter. Support body 222 fixed mounting is provided with guide post and first cutter on the support body 222 on the mount pad, and the guide post sets up along vertical direction, and first cutter fixed mounting is on support body 222. The cutter seat 223 is connected with the frame body 222 through the guide post, and the cutter seat 223 is connected with the guide post along the extending direction of the guide post in a slidable manner, the cutter seat 223 is provided with a second cutter, and the blade of the first cutter and the blade of the second cutter are arranged oppositely. The fourth driving assembly 221 employs a second cylinder, and the second cylinder is used for driving the cutter seat 223 to move towards the second cutter along the guide post, so that the second cutter cooperates with the first cutter to cut the second metal belt 5.
When the cutting assembly 22 is in the non-cutting state, the rod body of the second cylinder is in the retraction state, the cutter seat 223 is in the lifting state at this time, the second cutter is far away from the first cutter, namely, a certain distance is formed between the second cutter and the first cutter, and the second metal belt 5 passes through the cutting assembly 22 from the position between the first cutter and the second cutter to the position between the first pressing roller 32 and the second pressing roller 33.
When needs cut second strap 5, the body of rod of second cylinder stretches out, drives cutter seat 223 and moves down along vertical direction, makes the second cutter on the cutter seat 223 move to first cutter to cut second strap 5.
The position of the cutting assembly 22 in the horizontal direction is kept unchanged, the fourth driving assembly 221 drives the cutter seat 223 to move in the vertical direction, so that the distance between the first cutter and the second cutter is adjusted, the clamping portion 211 moves in the horizontal direction through the third driving assembly 212, the second metal belt 5 can penetrate through the cutting assembly 22 to reach the position between the first pressing roller 32 and the second pressing roller 33, the cutting assembly 22 does not need to avoid the clamping assembly 21, the pole piece composite device can still continuously run in the process of conveying the second metal belt 5 at intervals, and the improvement of the production efficiency is facilitated.
In the process of conveying the second metal strip 5, after the second metal strip 4 is conveyed for a first preset length, the cutting assembly 22 is started to cut the second metal strip 5, after the cutting, the first press roller 32 and the second press roller 33 continue to drive the two first metal strips 4 to be overlapped together, after the two first metal strips 4 are conveyed for a second preset length, the second metal strip 5 is inserted between the two first metal strips 4 again for compounding, and the operations are repeated according to the operations to form a composite pole piece coil stock arranged at intervals on the second metal strip 5; or after the second metal belt 4 is completely conveyed, the cutting assembly 22 is started to cut the second metal belt 5 to form a composite pole piece coil continuously arranged on the second metal belt 4. Therefore, the width of the second metal belt 5 in the composite pole piece can be adjusted, the requirements of different customers on the composite pole piece are met, the application range is wider, and the production cost of the composite pole piece is further reduced.
The composite pole piece coil stock with the second metal strips 5 arranged at intervals refers to that the second metal strips 5 clamped by the two first metal strips 4 in the composite pole piece are arranged at intervals along the winding direction, namely the second metal strips 5 are arranged discontinuously along the winding direction; the composite pole piece coil material in which the second metal belt 5 is continuously arranged means that the second metal belt 5 sandwiched by the two first metal belts 4 is continuously arranged along the winding direction.
It should be noted that, in the embodiments of the present application, specific values of the first preset length and the second preset length are not further limited, and those skilled in the art may select the values according to actual situations.
As shown in fig. 1, the unwinding assembly includes a first unwinding assembly 1 and a second unwinding assembly 8, the first unwinding assembly 1 and the second unwinding assembly 8 are disposed on the upper and lower sides of the feeding assembly 2 along the vertical direction, and the first unwinding assembly 1 and the second unwinding assembly 8 are wound with a first metal belt 4.
The pole piece compounding device further comprises a tension adjusting assembly, the tension adjusting assembly comprises a first tension adjusting assembly 6 and a second tension adjusting assembly 7, the first tension adjusting assembly 6 is arranged between the first unreeling assembly 1 and the compounding assembly 3, and the second tension adjusting assembly 7 is arranged between the second unreeling assembly 8 and the compounding assembly 3.
The first tension adjusting assembly 6 includes a first fixed roller (not shown), a first floating roller 61 and a fifth driving assembly 62, the fifth driving assembly 62 includes a fourth sliding seat, a fourth guide rail and a third air cylinder (not shown), the fourth guide rail extends along a vertical direction (i.e. the first direction) and is fixed on the bracket, the first floating roller 61 is installed on the fourth sliding seat, and the fourth sliding seat is slidably connected with the fourth guide rail along the extending direction of the fourth guide rail. The third cylinder is fixed on the support, and the third cylinder drives the fourth sliding seat to slide along the fourth guide rail, so that the first floating roller 61 moves up and down along the vertical direction. The first fixed rollers are fixedly arranged on the support, the first metal belt 4 is in a snake-shaped walking belt shape between the first floating roller 61 and the first fixed rollers, and the fifth driving assembly 62 can enable the first floating roller 61 to move up and down along the vertical direction, so that the tension of the first metal belt 4 is adjusted. The adoption of a plurality of first fixed rollers is beneficial to reducing the running tension of the first metal belt 4 and avoiding the deformation of the first metal belt 4.
The second tension adjusting assembly 7 includes a second fixed roller (not shown), a second floating roller 71 and a sixth driving assembly 72, the sixth driving assembly 72 includes a fifth sliding seat, a fifth guide rail and a fourth cylinder (not shown), the fifth guide rail extends along a vertical direction (i.e. the first direction) and is fixed on the bracket, the second floating roller 71 is mounted on the fifth sliding seat, and the fifth sliding seat is slidably connected with the fifth guide rail along the extending direction of the fifth guide rail. The fourth cylinder is fixed on the support and drives the fifth sliding seat to slide along the fifth guide rail, so that the second floating roller 71 can move up and down along the vertical direction. The second fixed rollers are fixedly arranged on the bracket, the first metal belt 4 is in a snake-shaped walking belt between the second floating roller 71 and the second fixed rollers, and the sixth driving assembly 72 can enable the second floating roller 71 to move up and down along the vertical direction, so that the tension of the first metal belt 4 is adjusted. The adoption of a plurality of second fixed rollers is beneficial to reducing the running tension of the first metal belt 4 and avoiding the deformation of the first metal belt 4.
The embodiment of this application is through set up first tension adjusting part 6 between first subassembly 1 and the composite assembly 3 unreeling, through unreeling at the second and set up second tension adjusting part 7 between subassembly 8 and the composite assembly 3, before two first strap 4 get into composite assembly 3, can rectify a deviation to two first strap 4, ensure the pan feeding precision of two first strap 4 that get into composite assembly 3, and avoid first strap 4 excessively to relax or stretch out, avoid first strap 4 to take place deformation, influence the compound quality of pole piece and production efficiency.
Fig. 6 is a schematic structural diagram of a composite pole piece roll. As shown in fig. 6, the composite pole piece roll includes a first metal strip 4 and a second metal strip 5, the second metal strip 5 is sandwiched between the two first metal strips 4, and the second metal strips 5 are arranged at intervals along a winding direction (i.e., a direction in which the dimension is larger in the figure). Of course, the structure of the composite pole piece coil may further include a first metal belt 4 and a second metal belt 5, the second metal belt 5 is sandwiched between the two first metal belts 4, and the second metal belt 5 is continuously arranged along the winding direction.
After the composite pole piece coil is obtained, the composite pole piece coil can be cut according to an actually required size, the width of the second metal belt 5 in the cut composite pole piece can be the same as the width of the first metal belt 4, and the width of the second metal belt 5 can also be smaller than the width of the first metal belt 4. The thicknesses of the first metal strip 4 and the second metal strip 5 are not further limited in the embodiments of the present application and may be determined by those skilled in the art according to actual circumstances.
The first metal strip 4 and the second metal strip 5 are made of different materials, in the embodiment of the present application, the first metal strip 4 is a lithium strip or a lithium aluminum alloy strip, the second metal strip 5 is a nickel strip or other metal strips, and the second metal strip 5 has a shape of a strip or a mesh. In the embodiment of the present application, the shape and material of the second metal belt 5 are not further limited, as long as the material of the second metal belt 5 is different from the material of the first metal belt 4, and those skilled in the art can select the shape and material according to the actual situation, for example: the first metal tape 4 is a lithium tape, and the second metal tape 5 is a nickel mesh or a nickel tape.
The working process of the pole piece combining device is described below by taking the production of the composite pole piece coil material with the second metal belt 5 arranged at intervals as an example:
two first metal strips 4 are manually passed between a first press roller 32 and a second press roller 33, the two first metal strips 4 are respectively fed between a first tension adjusting assembly 6 and a second tension adjusting assembly 7, the tension of the two first metal strips 4 is adjusted through the first tension adjusting assembly 6 and the second tension adjusting assembly 7, after a clamping part 211 clamps the second metal strip 5, a feeding driving assembly 23 drives a mounting seat to move along the horizontal direction to drive a clamping assembly 21 and a cutting assembly to be close to a composite assembly 3, then a third driving assembly 212 drives the clamping part 211 to move along the horizontal direction, so that the second metal strip 5 passes through the cutting assembly 22 from a position between a first cutter and a second cutter to a position between the first press roller 32 and the second press roller 33, the second metal strip 5 is inserted between the two first metal strips 4, the first driving assembly 34 clamps the first metal strip 4 and the second metal strip 5, the second driving assembly 35 drives the second pressing roller 33 to rotate around the axis direction thereof, so as to drive the first pressing roller 32 to rotate around the axis direction thereof, the first metal strip 4 and the second metal strip 5 are combined into a whole under the action of the first pressing roller 32 and the second pressing roller 33, after the second metal strip 5 reaches a first preset length, the fourth driving assembly 221 drives the cutter base 223 to move along the vertical direction, so that the second cutter cooperates with the first cutter to cut the second metal strip 5, after the cutting, the fourth driving assembly 221 drives the second cutter to be away from the first cutter, the first pressing roller 32 and the second pressing roller 33 drive the two first metal strips 4 to continue rolling until the second preset length is reached, the clamping part 211 clamps the second metal strip 5 to pass through the cutting assembly 22 from between the first cutter and the second cutter, reach between the first pressing roller 32 and the second pressing roller 33, and insert the second metal strip 5 between the two first pressing rollers 4, and (4) continuing compounding, repeating the operations until the compounding of the pole pieces is completed, winding the compounded pole pieces together in a coil material, and cutting when the pole pieces are used subsequently to obtain the required compound pole piece.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (11)
1. A pole piece compounding device, comprising:
the unwinding assembly comprises a first unwinding assembly and a second unwinding assembly, and the first unwinding assembly and the second unwinding assembly are both used for outputting a first metal belt;
the feeding assembly is positioned between the first unwinding assembly and the second unwinding assembly and used for conveying a second metal belt;
the composite assembly is used for compounding the first metal belt and the second metal belt into a whole.
2. The pole piece compounding device of claim 1, wherein the compounding assembly includes a first pressing roller and a second pressing roller that are disposed opposite to each other, the first pressing roller and the second pressing roller being relatively movable so as to be close to or away from each other, at least one of the first pressing roller and the second pressing roller being rotatable about its axis by a driving assembly.
3. The pole piece compounding device of claim 2, wherein the compounding assembly further comprises a first driving assembly, a second driving assembly and a fixing frame, the first pressing roller and the second pressing roller are disposed on the fixing frame, the first driving assembly is configured to drive the first pressing roller to approach or separate from the second pressing roller, and the second driving assembly is configured to drive the second pressing roller to rotate around its axis.
4. The pole piece assembly of claim 3, wherein the holder has a rail, the rail has a sliding seat, the sliding seat can move along the rail, and the first pressing roller is mounted on the sliding seat.
5. The pole piece compounding device of claim 1, wherein the feeding assembly comprises a clamping assembly, a cutting assembly, and a feeding driving assembly, the clamping assembly and the cutting assembly are mounted on a mounting base, the clamping assembly is configured to clamp the second metal strip, the cutting assembly is configured to cut off the second metal strip, and the feeding driving assembly is configured to drive the mounting base to move so as to input the second metal strip to the compounding assembly.
6. The pole piece compounding device of claim 5, wherein the clamping assembly comprises a clamping portion for clamping the second metal strip and a third drive assembly for driving the clamping portion toward or away from the compounding assembly.
7. The pole piece compounding device of claim 5, wherein the cutting assembly comprises a cutter configured to cut the second metal strip and a fourth drive assembly configured to drive the cutter to cut the second metal strip.
8. The pole piece assembly of claim 2 wherein the direction of relative movement between the first roller and the second roller is perpendicular to the direction of the second metal strip being transported by the feed assembly.
9. The pole piece compounding device of claim 1, further comprising a tension adjustment assembly for adjusting the first metal strip, the tension adjustment assembly comprising a first tension adjustment assembly and a second tension adjustment assembly, the first tension adjustment assembly disposed between the first unwinding assembly and the compounding assembly, the second tension adjustment assembly disposed between the second unwinding assembly and the compounding assembly.
10. The pole piece compounding device of claim 9,
the first tension adjusting assembly comprises a first fixed roller, a first floating roller and a fifth driving assembly, the first metal belt runs between the first fixed roller and the first floating roller, and the fifth driving assembly is used for adjusting the tension between the first floating roller and the first fixed roller;
the second tension adjusting assembly comprises a second fixed roller, a second floating roller and a sixth driving assembly, the first metal belt runs between the second fixed roller and the second floating roller, and the sixth driving assembly is used for adjusting the tension between the second floating roller and the second fixed roller.
11. A composite pole piece roll, characterized in that the composite pole piece roll is manufactured by using the pole piece combining device of any one of claims 1 to 10, and comprises a first metal belt and a second metal belt, wherein the second metal belt is sandwiched between the two first metal belts, and the second metal belt is arranged at intervals or continuously along the winding direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111645342.5A CN114291636A (en) | 2021-12-30 | 2021-12-30 | Pole piece composite device and composite pole piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111645342.5A CN114291636A (en) | 2021-12-30 | 2021-12-30 | Pole piece composite device and composite pole piece |
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| CN114291636A true CN114291636A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111645342.5A Pending CN114291636A (en) | 2021-12-30 | 2021-12-30 | Pole piece composite device and composite pole piece |
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| CN214774624U (en) * | 2021-01-25 | 2021-11-19 | 苏州天钻机械设备有限公司 | Geothermal film composite device |
| CN214957023U (en) * | 2021-04-21 | 2021-11-30 | 深圳吉阳智能科技有限公司 | Composite winding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207957324U (en) * | 2018-03-15 | 2018-10-12 | 宁德时代新能源科技股份有限公司 | The process equipment of secondary cell collector |
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