CN108014960A - A kind of constant-temperature battery electrode slurry coating die head - Google Patents
A kind of constant-temperature battery electrode slurry coating die head Download PDFInfo
- Publication number
- CN108014960A CN108014960A CN201810009652.XA CN201810009652A CN108014960A CN 108014960 A CN108014960 A CN 108014960A CN 201810009652 A CN201810009652 A CN 201810009652A CN 108014960 A CN108014960 A CN 108014960A
- Authority
- CN
- China
- Prior art keywords
- electrode slurry
- die head
- constant
- temperature
- battery electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011267 electrode slurry Substances 0.000 title claims abstract description 67
- 238000007581 slurry coating method Methods 0.000 title claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000000576 coating method Methods 0.000 abstract description 21
- 239000002002 slurry Substances 0.000 abstract description 15
- 239000011248 coating agent Substances 0.000 abstract description 10
- 239000011888 foil Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 239000006256 anode slurry Substances 0.000 abstract description 3
- 239000006257 cathode slurry Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 description 6
- 238000011105 stabilization Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 241000241602 Gossypianthus Species 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000002003 electrode paste Substances 0.000 description 1
- 239000002320 enamel (paints) Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention provides a kind of constant-temperature battery electrode slurry coating die head, it includes part of the die head, electrode slurry passage is equipped with part of the die head, one end of electrode slurry passage forms electrode slurry extrusion, there is chamber in part of the die head, the conducting-heat elements around electrode slurry passage are provided with chamber, there is conductive fluid chamber in conducting-heat elements.The present invention is conducive to keep anode and cathode slurry to be transferred to the constant of slurry temperature during foil compared to the prior art, so as to ensure pole piece in the consistent of horizontal surface density, shorten the halt production test-run a machine produced in coating process by slurry fluidity change, avoid manpower and waste of time, so as to reduce pole piece defect in coating process, coating quality and yields are improved.
Description
Technical field
The present invention relates to a kind of battery electrode paste coating die head, in particular to a kind of constant-temperature battery electrode slurry
Coating die head.
Background technology
In the production of battery, the consistency problem of lithium ion battery production is the technology of core the most in power battery industry
Problem, the coating procedure of electrode slice ensure that positive and negative anodes pole piece coating surface density, the uniformity of thickness are most bases as front end process
This requirement, and in coating process, slurry viscosity, mobility have significant impact to coating homogeneity.
The electrode slurry of lithium ion battery is non-newtonian fluid, and influence of the temperature to slurry coating performance includes at 2 points：First,
Temperature is lower, its viscosity is bigger, while mobility is poorer, and common extrusion coater needs the die pressure ability with bigger
Slurry is extruded, otherwise, under feeding to cause active material surface density on metal foil to reduce, temperature rise is then opposite；2nd, it is warm
Degree is lower, its viscosity is bigger, and the elasticity modulus of slurry is bigger, causes coating edge to shrink and forms drum side defect, by rolling
Afterwards, it may appear that more serious warping phenomenon, to can also have a great impact in follow-up cutting, winding process.
At present, in battery process, generally using control solid content, binding agent molecular weight come the viscosity of coordination electrode slurry,
And the control for temperature parameter not yet takes measures, that is to say, that electrode slurry can not be caused to keep one in coating process
The state of a constant temperature, so as to be impacted to coating quality and yields.
The content of the invention
In consideration of it, the present invention provides a kind of constant-temperature battery electrode slurry coating that can improve coating quality and yields
Die head.
The present invention provides a kind of constant-temperature battery electrode slurry coating die head, it includes part of the die head, is set in part of the die head
There is an electrode slurry passage, one end of electrode slurry passage forms electrode slurry extrusion, has chamber in part of the die head, in chamber
The conducting-heat elements around electrode slurry passage are provided with, there is conductive fluid chamber in conducting-heat elements.
Further, there is electrode slurry chamber, conducting-heat elements surround electrode slurry chamber on above-mentioned electrode slurry passage.
Further, the section of above-mentioned conductive fluid chamber assumes diamond in shape.
Further, above-mentioned part of the die head includes two symmetrically arranged die units, and the connection of two die unit pairings, leads
Hydrothermal solution chamber has two conductive fluid chamber units, and two conductive fluid chamber units are symmetrically distributed in two die units respectively.
Further, the section of above-mentioned conductive fluid chamber unit is triangular in shape or V-arrangement.
Further, above-mentioned conductive fluid chamber connection conductive fluid pipeline, conductive fluid pipeline connect constant temperature circulator, lead respectively
Hot chamber is provided with temperature sensor, and temperature sensor is electrically connected temperature controller, and temperature controller is electrically connected constant temperature and follows
Ring device.
Further, the shell of above-mentioned conducting-heat elements has copper alloy layer and insulating layer, and insulating layer is arranged on copper alloy layer.
Further, above-mentioned insulating layer is thermal baffle layer.
Further, the shell of above-mentioned part of the die head is metal layer.
Further, above-mentioned metal layer is stainless steel layer, nickel alloy layer, titanium alloy layer or aluminium alloy layer.
Further, above-mentioned conductive fluid chamber connection conductive fluid pipeline, conductive fluid pipeline connect constant temperature circulator respectively.
A kind of constant-temperature battery electrode slurry coating die head provided by the present invention, compared with prior art, its part of the die head
For hollow-core construction, it can effectively mitigate die head own wt and save raw material, the inside of part of the die head passes through around electrode
The conducting-heat elements of slurry passage carry out the constant temperature of holding electrode slurry passage electrode size, and stabilization is played to the viscosity of slurry
Effect, makes viscosity change will not occur because of gradient of temperature in its coating process, is conducive to keep anode and cathode slurry to be transferred to
Slurry temperature is constant during foil, so as to ensure pole piece in the consistent of horizontal surface density, shortening coating process because of slurry
The halt production test-run a machine that mobility variations produce, avoids manpower and waste of time, so as to reduce pole piece defect in coating process, carries
High coating quality and yields.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Attached drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole attached drawing, identical component is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is a kind of structure diagram of constant-temperature battery electrode slurry coating die head provided in an embodiment of the present invention；
Fig. 2 is a kind of a kind of application schematic diagram of constant-temperature battery electrode slurry coating die head provided in an embodiment of the present invention.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Embodiment one：
Referring to Fig. 1 to Fig. 2, a kind of constant-temperature battery electrode slurry coating mould that the embodiment of the present invention one provides is shown in figure
Head, it includes part of the die head 1, and electrode slurry passage 11 is equipped with part of the die head 1, and one end of electrode slurry passage 11 forms electrode
Slurry extrusion 12, part of the die head 1 is interior to have chamber 13, and the heat-conducting part around electrode slurry passage 11 is provided with chamber 13
Part, conducting-heat elements are interior to have conductive fluid chamber 14.
Wherein, as shown in Figure 1, can have electrode slurry chamber 111, the electrode slurry chamber on electrode slurry passage 11
111 allow the electrode slurry in passage to flow through, and conducting-heat elements can then surround electrode slurry chamber 111.The electrode slurry
Chamber 111 is specifically as follows circular, ellipse or the chamber of other shapes.
Specifically, as shown in Figure 1, as a kind of structure of the conducting-heat elements around electrode slurry passage 11, heat conduction sap cavity
The section of room 14 assumes diamond in shape so that conductive fluid chamber can farthest surround firmly (close) electrode slurry passage 11, especially
It is electrode slurry chamber 111, is formed to the maximum thermostatic effect of electrode slurry.
Thus, a kind of constant-temperature battery electrode slurry coating die head that the present embodiment is provided, compared with prior art, its mould
Head part is hollow-core construction, can effectively mitigate die head own wt and save raw material, the inside of part of the die head is by enclosing
Carry out the constant temperature of holding electrode slurry passage electrode size around the conducting-heat elements of electrode slurry passage, to the viscosity plays of slurry
To stabilization, make viscosity change will not occur because of gradient of temperature in its coating process, be conducive to keep anode and cathode slurry
Constant (foil 21 as shown in Figure 2 and the slurry 22) of slurry temperature during foil is transferred to, so as to ensure pole piece in transverse direction
Surface density it is consistent, shorten the halt production test-run a machine produced in coating process by slurry fluidity change, avoid manpower and time
Waste, so as to reduce pole piece defect in coating process, improve coating quality and yields.
Embodiment two：
Referring to Fig. 1 to Fig. 2, a kind of constant-temperature battery electrode slurry coating mould provided by Embodiment 2 of the present invention is shown in figure
Head, the present embodiment are also further made that the improved technical solution of following conduct on the basis of above-described embodiment：Die section
Part 1 includes two symmetrically arranged die units 15, and the connection of two die units, 15 pairing, conductive fluid chamber 14, which has two, leads
Hydrothermal solution chamber unit 141, two conductive fluid chamber units 141 are symmetrically distributed in two die units 15 respectively, form two-flap type
Part of the die head, can have hinged connection mode with this specific case after pairing between two die units 15, easy to rapidly dismantle.
In order to form the maximum thermostatic effect to electrode slurry passage 11 (particularly electrode slurry chamber 111),
As shown in Figure 1, the section of conductive fluid chamber unit 141 is triangular in shape or V-arrangement.
Embodiment three：
Referring to Fig. 1 to Fig. 2, a kind of constant-temperature battery electrode slurry coating mould that the embodiment of the present invention three provides is shown in figure
Head, the present embodiment are also further made that the improved technical solution of following conduct on the basis of above-described embodiment：Conductive fluid
Chamber 14 connects conductive fluid pipeline 144, and conductive fluid pipeline 144 connects constant temperature circulator 146, set in conductive fluid chamber 14 respectively
There is temperature sensor 147, temperature sensor 147 is electrically connected temperature controller 148, and temperature controller 148 is electrically connected constant temperature circulating
Device 146.
Specific control principle is as follows, and the temperature sensor 147 in conductive fluid chamber 14 senses the reality in conductive fluid chamber 14
Border temperature, and temperature signal is sent to temperature controller 148, if in the temperature value and temperature controller 148 in temperature signal
Set temperature value have differences, temperature controller 148 then sends control instruction for temperature adjustment to constant temperature circulator 146, permanent
Warm circulator 146 carries out temperature adjustment processing to the electrode slurry in conductive fluid pipeline 144, until it reaches the temperature value of setting, from
And keep die head temperature constant.
Wherein, constant temperature circulator 146, which can also be formed, makees the promotion that the electrode slurry in conductive fluid pipeline 144 flows
With.
Example IV：
Referring to Fig. 1 to Fig. 2, a kind of constant-temperature battery electrode slurry coating mould that the embodiment of the present invention four provides is shown in figure
Head, the present embodiment are also further made that the improved technical solution of following conduct on the basis of above-described embodiment：Heat-conducting part
The shell of part has copper alloy layer 142 and insulating layer 143, and insulating layer 143 is arranged on copper alloy layer 142, and copper alloy layer, which coordinates, to be protected
Warm layer has good thermal conductivity, can promote the more uniform stabilization in temperature field of die head, stabilization is played to the viscosity of slurry.
Specifically, insulating layer 143 is specifically as follows thermal baffle layer, and the heat-insulated material of thermal baffle layer can be mineral wool, cotton
Flower, animal hair, adiabatic reflection enamel coating, hollow ceramic particle or thermal insulation coatings.
Embodiment five：
Referring to Fig. 1 to Fig. 2, a kind of constant-temperature battery electrode slurry coating mould that the embodiment of the present invention five provides is shown in figure
Head, the present embodiment are also further made that the improved technical solution of following conduct on the basis of above-described embodiment：Die section
The shell of part 1 is metal layer, which is corrosion resistant metal layer, is specifically as follows stainless steel layer, nickel alloy layer, titanium alloy
Layer or aluminium alloy layer.The metal layer can form sandwich structure with above-mentioned copper alloy layer and insulating layer, further be formed
Good thermal conductivity, promotes the more uniform stabilization in temperature field of die head, stabilization is played to the viscosity of slurry.
In addition, when using the structure of the part of the die head described in embodiment two, may be arranged as between two die units
The corrosion resistant metal gasket of above-mentioned material is similarly, to ensure above-mentioned effect.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (10)
- A kind of 1. constant-temperature battery electrode slurry coating die head, it is characterised in that including part of the die head (1), the part of the die head (1) Interior to be equipped with electrode slurry passage (11), one end of the electrode slurry passage (11) forms electrode slurry extrusion (12), described There is chamber (13) in part of the die head (1), the heat conduction around the electrode slurry passage (11) is provided with the chamber (13) Component, the conducting-heat elements are interior to have conductive fluid chamber (14).
- A kind of 2. constant-temperature battery electrode slurry coating die head according to claim 1, it is characterised in that the electrode slurry There is electrode slurry chamber (111), the conducting-heat elements surround the electrode slurry chamber (111) on passage (11).
- A kind of 3. constant-temperature battery electrode slurry coating die head according to claim 1 or 2, it is characterised in that the heat conduction The section of sap cavity room (14) assumes diamond in shape.
- A kind of 4. constant-temperature battery electrode slurry coating die head according to claim 1 or 2, it is characterised in that the die head Component (1) includes two symmetrically arranged die units (15), two die unit (15) the pairing connections, the heat conduction sap cavity Room (14) has two conductive fluid chamber units (141), and the two conductive fluid chamber units (141) are symmetrically distributed in two respectively In the die unit (15).
- A kind of 5. constant-temperature battery electrode slurry coating die head according to claim 4, it is characterised in that the heat conduction sap cavity The section of chamber unit (141) is triangular in shape or V-arrangement.
- A kind of 6. constant-temperature battery electrode slurry coating die head according to claim 1, it is characterised in that the heat conduction sap cavity Room (14) connection conductive fluid pipeline (144), conductive fluid pipeline (144) the connection constant temperature circulator (146), the heat conduction sap cavity Temperature sensor (147) is provided with room (14), the temperature sensor (147) is electrically connected temperature controller (148), the temperature Spend controller (148) and be electrically connected the constant temperature circulator (146).
- A kind of 7. constant-temperature battery electrode slurry coating die head according to claim 1, it is characterised in that the conducting-heat elements Shell there is copper alloy layer (142) and insulating layer (143), the insulating layer (143) is arranged on the copper alloy layer (142).
- A kind of 8. constant-temperature battery electrode slurry coating die head according to claim 7, it is characterised in that the insulating layer (143) it is thermal baffle layer.
- A kind of 9. constant-temperature battery electrode slurry coating die head according to claim 1, it is characterised in that the part of the die head (1) shell is metal layer.
- A kind of 10. constant-temperature battery electrode slurry coating die head according to claim 9, it is characterised in that the metal layer For stainless steel layer, nickel alloy layer, titanium alloy layer or aluminium alloy layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810009652.XA CN108014960A (en) | 2018-01-05 | 2018-01-05 | A kind of constant-temperature battery electrode slurry coating die head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810009652.XA CN108014960A (en) | 2018-01-05 | 2018-01-05 | A kind of constant-temperature battery electrode slurry coating die head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108014960A true CN108014960A (en) | 2018-05-11 |
Family
ID=62072636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810009652.XA Pending CN108014960A (en) | 2018-01-05 | 2018-01-05 | A kind of constant-temperature battery electrode slurry coating die head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108014960A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580163A (en) * | 2018-05-15 | 2018-09-28 | 中航锂电（江苏）有限公司 | A kind of multi-functional coating die head |
| CN110328103A (en) * | 2019-07-04 | 2019-10-15 | 深圳市浩能科技有限公司 | Preheat coating machine and preheating coating method |
| CN110523583A (en) * | 2019-08-28 | 2019-12-03 | 湖北锂诺新能源科技有限公司 | Extrusion die slurry thermostatically-controlled equipment |
| CN112191469A (en) * | 2020-09-29 | 2021-01-08 | 湖北亿纬动力有限公司 | Coating method and coating machine for lithium battery negative electrode slurry |
| CN114574797A (en) * | 2022-02-23 | 2022-06-03 | 深圳市曼恩斯特科技股份有限公司 | Heat-insulation coating die head and preparation method thereof |
| CN114887832A (en) * | 2022-05-19 | 2022-08-12 | 岳阳耀宁新能源科技有限公司 | Lithium battery positive plate and edge insulating layer integrated coating die head |
| EP4260948A4 (en) * | 2022-02-24 | 2023-10-18 | Shenzhen Manst Technology Co., Ltd. | Coating die head and coating device |
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| CN102039255A (en) * | 2011-01-28 | 2011-05-04 | 福建南平南孚电池有限公司 | Coating device and method for forming pole piece of lithium battery |
| CN206673041U (en) * | 2017-04-27 | 2017-11-24 | 天津市捷威动力工业有限公司 | Lithium ion power cell pole flakes edge foil gluing membrane module |
| CN207951870U (en) * | 2018-01-05 | 2018-10-12 | 苏州宇量电池有限公司 | A kind of constant-temperature battery electrode slurry coating die head |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580163A (en) * | 2018-05-15 | 2018-09-28 | 中航锂电（江苏）有限公司 | A kind of multi-functional coating die head |
| CN108580163B (en) * | 2018-05-15 | 2021-04-13 | 中航锂电科技有限公司 | Multifunctional coating die head |
| CN110328103A (en) * | 2019-07-04 | 2019-10-15 | 深圳市浩能科技有限公司 | Preheat coating machine and preheating coating method |
| CN110523583A (en) * | 2019-08-28 | 2019-12-03 | 湖北锂诺新能源科技有限公司 | Extrusion die slurry thermostatically-controlled equipment |
| CN112191469A (en) * | 2020-09-29 | 2021-01-08 | 湖北亿纬动力有限公司 | Coating method and coating machine for lithium battery negative electrode slurry |
| CN114574797A (en) * | 2022-02-23 | 2022-06-03 | 深圳市曼恩斯特科技股份有限公司 | Heat-insulation coating die head and preparation method thereof |
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| EP4260948A4 (en) * | 2022-02-24 | 2023-10-18 | Shenzhen Manst Technology Co., Ltd. | Coating die head and coating device |
| CN114887832A (en) * | 2022-05-19 | 2022-08-12 | 岳阳耀宁新能源科技有限公司 | Lithium battery positive plate and edge insulating layer integrated coating die head |
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Application publication date: 20180511 |