CN209093804U - Pole piece drier and pole piece coating equipment - Google Patents
Pole piece drier and pole piece coating equipment Download PDFInfo
- Publication number
- CN209093804U CN209093804U CN201821534995.XU CN201821534995U CN209093804U CN 209093804 U CN209093804 U CN 209093804U CN 201821534995 U CN201821534995 U CN 201821534995U CN 209093804 U CN209093804 U CN 209093804U
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- Prior art keywords
- pole piece
- screw thread
- roller
- coating
- substrate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
Abstract
The utility model provides a kind of pole piece drier and pole piece coating equipment.Pole piece coating equipment includes unreeling structure, coating mechanism, rolling-up mechanism and pole piece drier.Coating mechanism is set to the downstream of unreeling structure, and pole piece drier is set to the downstream of coating mechanism, and rolling-up mechanism is set to the downstream of pole piece drier.Unreeling structure is for being arranged substrate；Slurry is contained inside coating mechanism, and for slurry to be applied to substrate to form coating.Pole piece drier is for drying the coating of pole piece and including drying box and the roller for being set to drying box.Roller is equipped with oppositely oriented the first screw thread and the second screw thread, and the first screw thread and the angle of roller axial direction are 45 °~85 °, and the angle of the second screw thread and roller axial direction is 45 °~85 °.
Description
Technical field
The utility model relates to battery manufacturing field more particularly to a kind of pole piece driers and pole piece coating equipment.
Background technique
In lithium ion battery manufacture process, the quality of the coating process of battery pole piece directly decides subsequent production technique
Difficulty or ease, the superiority and inferiority of quality and production efficiency height.The coating process of pole piece is exactly the table in substrate (such as metal foil)
Then face coating sizing-agent dries slurry so that it is solidified into coating.Under the trend for greatly developing high energy density cells, Bao Ji
Material coating is inevitable choice；But substrate it is excessively thin when its Young's modulus it is smaller, pole piece is easy horizontally warpage and becomes when dry
Shape.Slurry hardens after the completion of pole piece is dry, and when passing through roller, coating is easy to appear cracking phenomena.The prior art generallys use
Two methods avoid coating cracking, and one is in slurry plus plasticizer is to reduce pole piece brittleness, but plasticizer remains in pole piece
In can cause battery producing gas deteriorate, interface analysis lithium the problems such as；Another kind is to reduce cooling rate, is become with reducing the warpage of pole piece
Shape, but production efficiency is low.
Utility model content
In view of the problems in the background art, the purpose of this utility model is to provide a kind of pole piece drier and poles
Piece coating apparatus is avoided that the substrate camber deformation of pole piece, prevents the coating cracking of pole piece.
To achieve the goals above, the utility model provides a kind of pole piece drier and pole piece coating equipment.
Pole piece drier is for drying the coating of pole piece and including drying box and the roller for being set to drying box.Roller is set
Have oppositely oriented the first screw thread and the second screw thread, the angle of the first screw thread and roller axial direction is 45 °~85 °, the second screw thread and
The angle of roller axial direction is 45 °~85 °.
First screw thread and the second screw thread are symmetrical about the plane perpendicular to roller axial direction.
First screw thread is multiple thread, and the second screw thread is multiple thread.
The thread form of first screw thread is rectangle or trapezoidal.Along the axial direction of roller, the width of each outer surface for enclosing the first screw thread is
5mm~50mm, the width of each outer surface for enclosing the second screw thread are 5mm~50mm.
Along the axial direction of roller, the spacing of the first screw thread of two adjacent rings is less than the width of the outer surface of the first screw thread of each circle；Edge
The axial direction of roller, the spacing of the second screw thread of two adjacent rings are less than the width of the outer surface of the second screw thread of each circle.
First screw thread and the angle of roller axial direction are 60 °~80 °；The angle of second screw thread and roller axial direction is 60 °~
80°。
The confficient of static friction of first thread outer surface is 0.3~0.8, and dynamic friction coefficient is 0.2~0.5；Outside second screw thread
The confficient of static friction on surface is 0.3~0.8, and dynamic friction coefficient is 0.2~0.5.
Drying box includes the first puff prot and the second puff prot, is set on the tape path of pole piece, and the first puff prot
It is opposite with two surfaces of pole piece respectively with the second puff prot.
Pole piece coating equipment includes unreeling structure, coating mechanism, rolling-up mechanism and the pole piece drier.Coating
Mechanism is set to the downstream of unreeling structure, and pole piece drier is set to the downstream of coating mechanism, and rolling-up mechanism is set to pole piece
The downstream of drier.Unreeling structure is for being arranged substrate；Slurry is contained inside coating mechanism, and for slurry to be applied to
Substrate is to form coating.
The beneficial effects of the utility model are as follows: when roller rotates, the first screw thread and the second screw thread respectively apply substrate
Lateral frictional force, and the direction phase of frictional force that the first screw thread applies the frictional force that substrate applies with the second screw thread to substrate
Instead, so substrate flattens under the action of frictional force, substrate buckling deformation in the drying process is avoided.In addition, and the prior art
It compares, the application is by the progress synchronous with the drying process of coating of the flattening process of substrate, to avoid coating cracking.
Detailed description of the invention
Fig. 1 is the schematic diagram according to the pole piece coating equipment of the utility model.
Fig. 2 is the schematic diagram according to an embodiment of the roller of the pole piece drier of the utility model.
Fig. 3 is the schematic diagram according to another embodiment of the roller of the pole piece drier of the utility model.
Fig. 4 is the schematic diagram of pole coating.
Wherein, the reference numerals are as follows:
1 pole piece drier, 2 unreeling structure
11 drying box, 3 coating mechanism
111 first puff prot, 4 rolling-up mechanism
112 second puff prot P pole pieces
12 roller P1 substrates
121 first screw thread P2 coatings
122 second screw threads
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
In the description of the present application unless specifically defined or limited otherwise, term " first ", " second " are only used for describing
Purpose, be not understood to indicate or imply relative importance；Term " multiple " refers to two or more；Unless otherwise
Regulation or explanation, term " connection ", " fixation " etc. shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection
It is to be detachably connected, or be integrally connected, or electrical connection or signal connect；" connection " can be directly connected, and can also pass through
Intermediary is indirectly connected.For the ordinary skill in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the application.
In the description of this specification, it is to be understood that the nouns of locality such as "upper", "lower" described in the embodiment of the present application are
With angle shown in the drawings come what is be described, the restriction to the embodiment of the present application should not be construed as.In addition, within a context,
It is also to be appreciated that can not only directly connect when mentioning an element and being connected to another element "upper" or "lower"
Connect another element "upper" perhaps "lower" can also be indirectly coupled to by intermediary element another element "upper" or
"lower".The application is described in further detail below by specific embodiment and in conjunction with attached drawing.
The pole piece coating equipment of the application is applied to the coating process of pole piece P.Specifically, the pole piece coating equipment of the application
For slurry to be coated to the surface of substrate P1 and forms coating P2, substrate P1 and coating P2 form pole piece P.Substrate P1 can be gold
Belong to foil, such as copper foil, aluminium foil etc..It include active material in the slurry.
Referring to Fig.1, the pole piece coating equipment of the application includes pole piece drier 1, unreeling structure 2, coating mechanism 3, receives
Mechanism 4 is rolled up, unreeling structure 2, coating mechanism 3, pole piece drier 1 and rolling-up mechanism 4 are successively set along the tape transport direction of pole piece P
It sets.
Unreeling structure 2 is for being arranged substrate P1.Unreeling structure 2 may include let off roll, starch when needing to be coated on substrate P1
It, can be by substrate P1 on let off roll when material.
Coating mechanism 3 be set to the downstream of unreeling structure 2 and its inside contain slurry.Referring to Fig.1 and Fig. 4, work as substrate
When P1 is passed through from coating mechanism 3, slurry is applied to the surface of substrate P1 and forms coating P2 by coating mechanism 3.
Pole piece drier 1 is set to the downstream of coating mechanism 3 and for the coating P2 on dry substrate P1.As substrate P1
When entering pole piece drier 1 with coating P2, coating P2 is by heat cure.
Rolling-up mechanism 4 is set to the downstream of pole piece drier 1 and including wind-up roll.Wind-up roll is walked for drawing substrate P1
Band so that substrate P1 sequentially passes through coating mechanism 3 and pole piece drier 1, and is wound in wind-up roll.
Pole piece drier 1 includes drying box 11 and the roller 12 for being set to drying box 11, and pole piece P is worn from roller 12
It crosses.Drying box 11 sprays hot wind towards pole piece P, thus dry coating P2.
Referring to Fig. 2, roller 12 is equipped with oppositely oriented the first screw thread 121 and the second screw thread 122, the edge substrate P1 of pole piece P
The outer peripheral surface tape transport of the outer peripheral surface of the first screw thread 121 and the second screw thread 122.Roller 12 is driven voller, and pole piece P is from roller 12
Across when, drive roller 12 rotate.
When roller 12 rotates, the first screw thread 121 and the second screw thread 122 laterally (are parallel to roller to substrate P1 application respectively
12 axial direction) frictional force, and the frictional force that applies to substrate P1 of the first screw thread 121 and the second screw thread 122 apply substrate P1
Frictional force it is contrary, so substrate P1 is flattened under the action of frictional force, avoid substrate P1 warpage in the drying process
Deformation.In addition, compared with the prior art (first dry, again flatten), the application is dry by the flattening process of substrate P1 and coating P2's
Dry process is synchronous to be carried out, so that coating P2 be avoided to crack.
In the coating process of pole piece P, if the coating speed of coating mechanism 3 improves, the temperature in drying box 11
It is also required to corresponding raising, to dry the pole piece P of high-speed cruising；In the prior art, substrate P1 holds under the conditions of high-speed and high-temperature
Easy warpage, leads to coating cracking, so the coating speed of the prior art is restricted.And the application can be dry coating P2's
Substrate P1 is flattened in the process, avoids coating P2 from cracking, so coating speed can be improved in the pole piece coating equipment of the application.
Referring to Fig. 2, the first screw thread 121 is 45 °~85 ° with the axial angle α of roller 12.If α is less than 45 °, the first spiral shell
The inclined degree of line 121 is larger, when roller 12 rotates unit angle (for example, one circle of rotation), the first screw thread 121 and substrate P1
Relative sliding horizontally is bigger than normal；And due to substrate P1 relatively thin (usually more than ten microns), if Relative sliding is larger, substrate
P1 is easy to be worn.And if α is greater than 85 °, the inclined degree of the first screw thread 121 is smaller, rotates unit angle in roller 12
When, the first screw thread 121 and the Relative sliding of substrate P1 horizontally are less than normal, limited to the flattening effect of substrate P1.First screw thread
121 angle αs axial with roller 12 are preferably 60 °~80 °.
Similarly, the second screw thread 122 and the axial angle β of roller 12 are 45 °~85 °, preferably 60 °~80 °.
Further, the value of α and the value of β are preferably identical, in this way, the reverse friction power that substrate P1 is subject to is relatively uniform, have
Help improve the flattening effect of substrate P1.
In one embodiment, referring to Fig. 2, the first screw thread 121 and the second screw thread 122 are one, it is preferable that the first screw thread
121 and second screw thread 122 about symmetrical perpendicular to the axial plane of roller 12.
Alternatively, in another embodiment, referring to Fig. 3, the first screw thread 121 is multiple thread, and the second screw thread 122 is more
Head thread.
The thread form of first screw thread 121 is rectangle or trapezoidal, and the second screw thread 122 is identical as first form of thread.
Referring to Fig. 2, along the axial direction of roller 12, the width L of each outer surface for enclosing the first screw thread 1211It is excellent for 5mm~50mm
It is selected as 10mm~30mm.L1When less than 5mm, each contact surface for enclosing the first screw thread 121 and substrate P1 is smaller, applies to substrate P1
Frictional force is insufficient, influences the flattening effect of substrate P1.L1When greater than 50mm, the circle number of the first screw thread 121 can accordingly reduce, and lead
Substrate P1 each section unbalance stress is caused, the flattening effect of substrate P1 is influenced.
Similarly, the width L of the outer surface of the second screw thread 122 is respectively enclosed2For 5mm~50mm, preferably 10mm~30mm.Into
One step, L1Value and L2Value it is preferably identical, in this way, the reverse friction power that substrate P1 is subject to is relatively uniform, help to improve base
The flattening effect of material P1.
Along the axial direction of roller 12, the space D of the first screw thread of two adjacent rings 1211Less than the outer surface of the first screw thread 121 of each circle
Width L1, can guarantee the contact area of the first screw thread 121 and substrate P1 in this way, improve the flattening effect of substrate P1.Equally
Ground, along the axial direction of roller 12, the space D of the second screw thread of two adjacent rings 1222Less than the width of the outer surface of the second screw thread 122 of each circle
Spend L2.Wherein, D1It can be 5mm~20mm, D2It can be 5mm~20mm, it is preferable that D1Equal to D2。
The confficient of static friction of first screw thread, 121 outer surface is 0.3~0.8, and dynamic friction coefficient is 0.2~0.5, in this way can be with
Guarantee frictional force suffered by substrate P1, improves the flattening effect of substrate P1.Similarly, quiet the rubbing of 122 outer surface of the second screw thread
Wiping coefficient is 0.3~0.8, and dynamic friction coefficient is 0.2~0.5.Preferably, the confficient of static friction etc. of 121 outer surface of the first screw thread
The dynamic friction coefficient of confficient of static friction in 122 outer surface of the second screw thread, 121 outer surface of the first screw thread is equal to the second screw thread 122
The dynamic friction coefficient of outer surface.
When pole piece P passes through roller 12, cornerite that pole piece P is contacted with roller 12 is 90 °~180 °, preferably 135 °~
175°.Big cornerite can extend the extension time of substrate P1, improve flattening effect.
Referring to Fig.1, drying box 11 includes the first puff prot 111 and the second puff prot 112, is set to pole piece P and walks to lead the way
On diameter, and the first puff prot 111 and the second puff prot 112 are opposite with two surfaces of pole piece P respectively.First puff prot 111 can
Be it is multiple and set gradually along the tape path of pole piece P, the second puff prot 112 can for it is multiple and along the tape path of pole piece P according to
Secondary setting.
Claims (10)
1. a kind of pole piece drier, for drying the coating (P2) of pole piece (P), which is characterized in that including drying box (11) and
It is set to the roller (12) of drying box (11)；
Roller (12) is equipped with oppositely oriented the first screw thread (121) and the second screw thread (122), the first screw thread (121) and roller
(12) axial angle is 45 °~85 °, and the angle of the second screw thread (122) and roller (12) axial direction is 45 °~85 °.
2. pole piece drier according to claim 1, which is characterized in that the first screw thread (121) and the second screw thread (122)
It is symmetrical about the plane perpendicular to roller (12) axial direction.
3. pole piece drier according to claim 1, which is characterized in that the first screw thread (121) be multiple thread, second
Screw thread (122) is multiple thread.
4. pole piece drier according to claim 1, which is characterized in that the thread form of the first screw thread (121) be rectangle or
It is trapezoidal.
5. pole piece drier according to claim 4, which is characterized in that the axial direction along roller (12), it is each to enclose the first spiral shell
The width of the outer surface of line (121) is 5mm~50mm, and the width of each outer surface for enclosing the second screw thread (122) is 5mm~50mm.
6. pole piece drier according to claim 5, which is characterized in that
Axial direction along roller (12), the spacing of the first screw thread of two adjacent rings (121) are less than the outer surface of each circle the first screw thread (121)
Width；
Axial direction along roller (12), the spacing of the second screw thread of two adjacent rings (122) are less than the outer surface of each circle the second screw thread (122)
Width.
7. pole piece drier according to claim 1, which is characterized in that
First screw thread (121) and the angle of roller (12) axial direction are 60 °~80 °；
Second screw thread (122) and the angle of roller (12) axial direction are 60 °~80 °.
8. pole piece drier according to claim 1, which is characterized in that
The confficient of static friction of the first screw thread (121) outer surface is 0.3~0.8, and dynamic friction coefficient is 0.2~0.5；
The confficient of static friction of the second screw thread (122) outer surface is 0.3~0.8, and dynamic friction coefficient is 0.2~0.5.
9. pole piece drier according to claim 1, which is characterized in that drying box (11) includes the first puff prot
(111) and the second puff prot (112) it, is set on the tape path of pole piece (P), and the first puff prot (111) and the second jet
Mouth (112) is opposite with two surfaces of pole piece (P) respectively.
10. a kind of pole piece coating equipment, including unreeling structure (2), coating mechanism (3), rolling-up mechanism (4) and claim 1-
Pole piece drier (1) described in any one of 9；
Coating mechanism (3) is set to the downstream of unreeling structure (2), and pole piece drier (1) is set under coating mechanism (3)
Trip, rolling-up mechanism (4) are set to the downstream of pole piece drier (1)；
Unreeling structure (2) is for being arranged substrate (P1)；Slurry is contained inside coating mechanism (3), and for slurry to be applied to
Substrate (P1) is to form coating (P2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821534995.XU CN209093804U (en) | 2018-09-19 | 2018-09-19 | Pole piece drier and pole piece coating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821534995.XU CN209093804U (en) | 2018-09-19 | 2018-09-19 | Pole piece drier and pole piece coating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209093804U true CN209093804U (en) | 2019-07-12 |
Family
ID=67153059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821534995.XU Active CN209093804U (en) | 2018-09-19 | 2018-09-19 | Pole piece drier and pole piece coating equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209093804U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113517448A (en) * | 2021-07-14 | 2021-10-19 | 辽宁分子流科技有限公司 | Winding equipment for preparing membrane electrode |
| CN113517447A (en) * | 2021-07-14 | 2021-10-19 | 辽宁分子流科技有限公司 | Preparation method of fuel cell membrane electrode |
-
2018
- 2018-09-19 CN CN201821534995.XU patent/CN209093804U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113517448A (en) * | 2021-07-14 | 2021-10-19 | 辽宁分子流科技有限公司 | Winding equipment for preparing membrane electrode |
| CN113517447A (en) * | 2021-07-14 | 2021-10-19 | 辽宁分子流科技有限公司 | Preparation method of fuel cell membrane electrode |
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