CN110064560A - A kind of Double-mold-head apparatus for coating and its pole coating technique - Google Patents
A kind of Double-mold-head apparatus for coating and its pole coating technique Download PDFInfo
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- CN110064560A CN110064560A CN201910335039.1A CN201910335039A CN110064560A CN 110064560 A CN110064560 A CN 110064560A CN 201910335039 A CN201910335039 A CN 201910335039A CN 110064560 A CN110064560 A CN 110064560A
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- die head
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- gasket
- head
- diffluence pass
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- 238000000576 coating method Methods 0.000 title claims abstract description 113
- 239000011248 coating agent Substances 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims description 11
- 239000011888 foil Substances 0.000 claims description 10
- 238000010422 painting Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 42
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 4
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000003973 paint Substances 0.000 description 13
- 230000008901 benefit Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005476 soldering Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000002699 waste material Substances 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
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/06—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length by rubbing contact, e.g. by brushes, by pads
-
- 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
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/16—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work
-
- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1044—Apparatus or installations for supplying liquid or other fluent material to several applying apparatus or several dispensing outlets, e.g. to several extrusion nozzles
-
- 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
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
- B05D1/005—Spin coating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Coating Apparatus (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention belongs to lithium ion battery preparation technical fields, more particularly to a kind of Double-mold-head apparatus for coating, including die head and the roll shaft structure being equipped with die head, die head includes the first die head and the second die head being correspondingly arranged with the first die head, first die head is provided with the first gasket, second die head is provided with the second gasket, and the first gasket and the second gasket are correspondingly arranged between the first die head and the second die head；First gasket has multiple first diffluence pass, and the second gasket has multiple second diffluence pass, and the first diffluence pass and the dislocation of the second diffluence pass are correspondingly arranged.Compared with the existing technology, the present invention is by the way that the first gasket and the second gasket to be correspondingly arranged between the first die head and the second die head, the tab welding area for keeping the available coating utilization rate of die head high, finally obtain the high pole piece of tab welding area coating utilization rate, the abnormal risk for reducing battery product, improves production efficiency and production excellence rate.
Description
Technical field
The invention belongs to lithium ion battery preparation technical field more particularly to a kind of Double-mold-head apparatus for coating.
Background technique
Lithium ion battery is light-weight, the advantages that having a safety feature, therefore in bluetooth headset, mobile phone, laptop, plate electricity
The application in the fields such as the mobile electronic devices such as brain, video camera and portable mobile power supply has been in monopoly position.Meanwhile lithium from
Sub- battery is also in the fields such as battery-operated motor cycle, electric car batch application.
For current lithium ion battery in pole coating, in the head position of battery core pole piece, there are one section of tab welding areas for meeting
For soldering polar ear, tab welding area is empty foil region.Existing battery core is in pole piece tail when being melted into, sorting charging
The electronics in portion need to be mobile to the tab position on pole piece head, is easy to cause in battery core charging process since the path of electronics is longer interior
Resistance increases, if higher using battery core temperature rise when high current fast charging and discharging, battery core performance is on the one hand caused to decline, on the other hand pacified
Full blast is nearly larger, pole piece easily occurs and cross heat damage raw material structure leading to explosion on fire.
To solve the above-mentioned problems, tab is usually arranged in the middle part of pole piece, to reduce the internal resistance of battery core；In order to incite somebody to action
It is set in tab, existing pole coating technique can stop being coated with, so that there are empty foils when being coated in tab welding area
Tab welding area.But it can be used for the tab welding area of soldering polar ear only fraction region, therefore other sky foil regions can not to obtain
To utilization, the waste of the spreading area of pole piece is caused, and reduces the energy density of battery core, to reduce the performance of battery.
Therefore, a kind of technical solution that can obtain high-energy density pole piece is needed.
Summary of the invention
It is an object of the present invention to: in view of the deficiencies of the prior art, and a kind of Double-mold-head apparatus for coating is provided, with solution
The low problem of certainly existing pole-piece pole-ear welding section coating utilization rate.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of Double-mold-head apparatus for coating, it is described including die head and the roll shaft structure being equipped with the die head
Die head includes the first die head and the second die head for being correspondingly arranged with first die head, and first die head is provided with first
Gasket, second die head are provided with the second gasket, and first gasket and second gasket are correspondingly arranged at described first
Between die head and second die head；First gasket has multiple first diffluence pass, and second gasket has multiple the
Two diffluence pass, first diffluence pass and second diffluence pass dislocation are correspondingly arranged.
As the preferred embodiment of Double-mold-head apparatus for coating of the present invention, the two sides of first gasket be provided with
One left side and the first right side and at least one first point between first left side and first right side
Stream portion, between the side of adjacent first distributary division, the corresponding side surface of first distributary division in marginal position with
First diffluence pass is respectively formed between the corresponding side surface of first left side or the corresponding side surface of the first right side.
As the preferred embodiment of Double-mold-head apparatus for coating of the present invention, first gasket is additionally provided with the first base
Portion, first left side, first right side and first distributary division are arranged at first base portion.
As the preferred embodiment of Double-mold-head apparatus for coating of the present invention, the two sides of second gasket be provided with
Two left sides and the second right side and at least one second point between second left side and second right side
Stream portion, between the side of adjacent second distributary division, the corresponding side surface of second distributary division in marginal position with
The second diffluence pass is respectively formed between the corresponding side surface of second left side or the corresponding side surface of the second right side.
As the preferred embodiment of Double-mold-head apparatus for coating of the present invention, second gasket is additionally provided with the second base
Portion, second left side, second right side and second distributary division are arranged at second base portion.
It further include feeding structure as the preferred embodiment of Double-mold-head apparatus for coating of the present invention, the feeding structure
Including the first feeding device and the second feeding device, first feeding device is connect with first die head, and described second supplies
Material device is connect with second die head.
As the preferred embodiment of Double-mold-head apparatus for coating of the present invention, first feeding device includes the first coating
Valve and the first return valve, second feeding device include the second coating valve and the second return valve.
As the preferred embodiment of Double-mold-head apparatus for coating of the present invention, multiple first diffluence pass and multiple described
Second diffluence pass is parallel.
As the preferred embodiment of Double-mold-head apparatus for coating of the present invention, the quantity of first diffluence pass and described
The quantity of two diffluence pass is identical or the quantity of first diffluence pass than second diffluence pass quantity more than one.
An object of the present invention has the beneficial effect that die head of the invention includes the first die head and with first
The second die head that die head is correspondingly arranged, the first die head are provided with the first gasket, and the second die head is provided with the second gasket, the first gasket
And second gasket be correspondingly arranged between the first die head and the second die head；First gasket has multiple first diffluence pass, the second pad
Piece has multiple second diffluence pass, and the first diffluence pass and the second diffluence pass shift to install.Compared with the existing technology, the present invention passes through
First gasket and the second gasket are correspondingly arranged between the first die head and the second die head, the available coating benefit of die head is made
With the high tab welding area of rate, while other coating areas in Neng Shi tab welding area and pole piece are seamlessly connected, and finally obtain pole
Ear welding section is coated with the high pole piece of utilization rate, reduces the abnormal risk of battery product, improves production efficiency and produces excellent
Rate.
The working principle of the invention: when the first die head is individually coated, coating area and the area Kong Bo can be obtained and be arranged alternately
Pole piece, when the second die head is individually coated, the pole piece that coating area and the area Kong Bo are arranged alternately, the coating area of the two can be obtained
Dislocation corresponds to.When die head needs to be coated with complete paint area, the first die head and the second die head are coated simultaneously, the first mould
The coating area that the coating area that head coating obtains can be coated with the second die head is merged into the complete paint of a coating all standing
Area finally obtains the complete paint area of pole piece.When die head needs to be coated with tab welding area, the first die head stops coating,
Second die head is individually coated, and finally obtains the pole piece that coating area and the area Kong Bo are arranged alternately；Wherein, due to tab welding area
The area welding Kong Bo be used for soldering polar ear, other regions in tab welding area are welding paste area, therefore the present invention can be applied
The high tab welding area of cloth utilization rate, finally obtains the pole piece of high-energy density.
The second object of the present invention is: in view of the deficiencies of the prior art, and providing a kind of pole of Double-mold-head apparatus for coating
Piece coating process.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of pole coating technique of Double-mold-head apparatus for coating, the Double-mold-head apparatus for coating are bimodulus described in any of the above-described section
Head apparatus for coating, the pole coating technique include:
First coating stage: roll shaft structure drives pole piece rotation, and the first die head and the second die head simultaneously carry out the pole piece of rotation
Coating；
Part coating stage: the first die head stops coating, and the second die head continues to be coated the pole piece of rotation；
Second coating stage: the first die head and the second die head are simultaneously coated the pole piece of rotation；
The empty foil stage: roll shaft structure continues to drive pole piece rotation, and the first die head and the second die head are simultaneously stopped coating.
The second object of the present invention has the beneficial effect that the present invention passes through the available coating benefit of part coating stage
With the high tab welding area of rate, while other coating areas in Neng Shi tab welding area and pole piece are seamlessly connected, and finally obtain pole
Ear welding section is coated with the high pole piece of utilization rate；The present invention can determine pole by the opening and closing of the first die head of control simultaneously
The position of ear welding section improves the scope of application of apparatus for coating, reduces the abnormal risk of battery product, improves production
Efficiency and production excellence rate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of Double-mold-head apparatus for coating in the present invention.
Fig. 2 is the structural schematic diagram of the first gasket in the present invention.
Fig. 3 is the structural schematic diagram of the second gasket in the present invention.
Fig. 4 is the cooperation figure of the first gasket and the second gasket in the present invention.
Fig. 5 is the structural schematic diagram of pole piece obtained by Double-mold-head apparatus for coating in the present invention.
In figure: 1- die head；The first die head of 11-；The first gasket of 111-；The first diffluence pass of 1111-；1112- first is left
Side；The first right side 1113-；The first distributary division of 1114-；The first base portion of 1115-；The first fixation hole of 1116-；The second mould of 12-
Head；The second gasket of 121-；The second diffluence pass of 1211-；The second left side 1212-；The second right side 1213-；1214- second is shunted
Portion；The second base portion of 1215-；The second fixation hole of 1216-；2- roll shaft structure；3- feeding structure；The first feeding device of 31-；311-
One coating valve；The first return valve of 312-；The second feeding device of 32-；321- second is coated with valve；The second return valve of 322-；4- pole piece；
41- complete paint area；The first complete paint of 411- area；The second complete paint of 412- area；42- tab welding area；421- welding is empty
Foil area；422- welding paste area；43- sky foil interstitial area.
Specific embodiment
It is attached below in conjunction with specific embodiment and specification to keep technical solution of the present invention and advantage clearer
Figure is described in further detail the present invention and its advantages, and embodiments of the present invention are not limited thereto.
Embodiment 1
As shown in Fig. 1 ~ 5, a kind of Double-mold-head apparatus for coating, including die head 1 and the roll shaft being equipped with die head 1
Structure 2, die head 1 include the first die head 11 and the second die head 12 being correspondingly arranged with the first die head 11, and the first die head 11 is set
It is equipped with the first gasket 111, the second die head 12 is provided with the second gasket 121, and the first gasket 111 and the second gasket 121 are correspondingly arranged
Between the first die head 11 and the second die head 12, wherein the first gasket 111 is provided with the first fixation hole 1116, and passes through and spiral shell
Nail cooperation, which is spirally connected, is fixed on the first die head 11, and the second gasket 121 is provided with the second fixation hole 1216, and passes through and screw fit spiral shell
It connects and is fixed on the second die head 12；First gasket 111 has multiple first diffluence pass 1111, and the second gasket 121 has multiple second
Diffluence pass 1211, the first diffluence pass 1111 and the dislocation of the second diffluence pass 1211 are correspondingly arranged.
The present embodiment have the beneficial effect that the present embodiment die head 1 include the first die head 11 and with the first mould
First 11 the second die heads 12 being correspondingly arranged, the first die head 11 are provided with the first gasket 111, and the second die head 12 is provided with the second gasket
121, the first gasket 111 and the second gasket 121 are correspondingly arranged between the first die head 11 and the second die head 12；First gasket 111
With multiple first diffluence pass 1111, the second gasket 121 has multiple second diffluence pass 1211, the first diffluence pass 1111 and second
Diffluence pass 1211 shifts to install.Compared with the existing technology, the present embodiment passes through the first gasket 111 and the second gasket 121 is corresponding
It is arranged between the first die head 11 and the second die head 12, the tab welding area for keeping the available coating utilization rate of die head 1 high
42, while other coating areas in Neng Shi tab welding area 42 and pole piece 4 are seamlessly connected, and finally obtain the coating of tab welding area 42
The high pole piece 4 of utilization rate reduces the abnormal risk of battery product, improves production efficiency and production excellence rate.
The working principle of the present embodiment: when the first die head 11 is individually coated, coating area and the area Kong Bo alternating can be obtained
The pole piece 4 of setting when the second die head 12 is individually coated, can obtain the pole piece 4 that coating area and the area Kong Bo are arranged alternately, the two
Coating area misplace correspond to.When die head 1 needs to be coated with complete paint area 41, the first die head 11 and the second die head 12 are simultaneously
It is coated, the coating area that the coating of the first die head 11 obtains can be coated with obtained coating area with the second die head 12 and be merged into a painting
The complete paint area 41 for expecting all standing, finally obtains the complete paint area 41 of pole piece 4.When die head 1 needs to be coated with tab weldering
When meeting area 42, the first die head 11 stops coating, and the second die head 12 is individually coated, and finally obtains coating area and the area Kong Bo alternating
The pole piece 4 of setting, therefore the present invention can pass through the position in the open and close control tab welding area 42 of the first die head 11 of control；Its
In, since the area welding Kong Bo 421 in tab welding area 42 is used for soldering polar ear, other regions in tab welding area 42 are that welding applies
Expect area 422, therefore the present embodiment can obtain the high tab welding area 42 of coating utilization rate, finally obtain the pole piece of high-energy density
4。
Preferably, the two sides of the first gasket 111 are provided with the first left side 1112 and the first right side 1113 and at least
One the first distributary division 1114 between the first left side 1112 and the first right side 1113, the first adjacent distributary division
The corresponding side surface of the first distributary division 1114 between 1114 side, in marginal position and the first left side 1112 it is corresponding
The first diffluence pass 1111 is respectively formed between the corresponding side surface of side or the first right side 1113.
Preferably, the first gasket 111 is additionally provided with the first base portion 1115, the first left side 1112, the first right side 1113
The first base portion 1115 is arranged at the first distributary division 1114.
Preferably, the two sides of the second gasket 121 are provided with the second left side 1212 and the second right side 1213 and at least
One the second distributary division 1214 between the second left side 1212 and the second right side 1213, the second adjacent distributary division
The corresponding side surface of the second distributary division 1214 between 1214 side, in marginal position and the second left side 1212 it is corresponding
The second diffluence pass 1211 is respectively formed between the corresponding side surface of side or the second right side 1213.
Preferably, the second gasket 121 is additionally provided with the second base portion 1215, the second left side 1212, the second right side 1213
The second base portion 1215 is arranged at the second distributary division 1214.
It preferably, further include feeding structure 3, feeding structure 3 includes the first feeding device 31 and the second feeding device 32, the
One feeding device 31 is connect with the first die head 11, and the second feeding device 32 is connect with the second die head 12；It is highly preferred that the first feed
Device 31 includes the first coating valve 311 and the first return valve 312, and the second feeding device 32 includes the second coating valve 321 and second
Return valve 322.By above-mentioned setting, enables the feed independent work of the first die head 11 and the second die head 12, realize the first mould
First 11 stop coating, and the second die head 12 remains to continue the function of coating.
Preferably, multiple first diffluence pass 1111 are parallel with multiple second diffluence pass 1211.By above-mentioned setting, make pole piece
Coating area coating on 4 uniformly improves production excellence rate.
Preferably, the quantity of the first diffluence pass 1111 is identical with the quantity of the second diffluence pass 1211 or the first diffluence pass
1111 quantity than the second diffluence pass 1211 quantity more than one.Above two quantity setting is able to achieve coating function of the invention
Energy.
Embodiment 2
A kind of pole coating technique of Double-mold-head apparatus for coating, the Double-mold-head painting that Double-mold-head apparatus for coating is any of the above-described section arrange
It sets, pole coating technique successively includes:
First coating stage: roll shaft structure 2 drives pole piece 4 to rotate, and the first die head 11 and the second die head 12 are simultaneously to the pole of rotation
Piece 4 is coated, and coating is flowed out from multiple first diffluence pass 1111 and multiple second diffluence pass 1211 respectively, obtains pole piece 4
First complete paint area 411 of coating all standing, multiple first diffluence pass 1111 and multiple second diffluence pass 1211 correspondence obtain
First complete paint area 411；
Part coating stage: the first die head 11 stops coating, and the second die head 12 continues to be coated the pole piece 4 of rotation, coating
It is flowed out from multiple second diffluence pass 1211, pole piece 4 is made to generate coating area and alternate tab welding area 42, the area Kong Bo, wherein the
Two distributary divisions 1214 are corresponding to obtain the welding area Kong Bo 421, and the width of the second distributary division 1214 is equal to the width in the welding area Kong Bo 421
Degree, the second diffluence pass 1211 is corresponding to obtain welding paste area 422, and the width of the second diffluence pass 1211 is equal to welding paste area 422
Width；
Second coating stage: the first die head 11 and the second die head 12 are simultaneously coated the pole piece 4 of rotation, and coating is respectively from more
A first diffluence pass 1111 and the outflow of multiple second diffluence pass 1211, make pole piece 4 obtain the second complete paint of coating all standing
Area 412, multiple first diffluence pass 1111 and multiple second diffluence pass 1211 correspondence obtain the first complete paint area 411；
The empty foil stage: roll shaft structure 2 continues that pole piece 4 is driven to rotate, and the first die head 11 and the second die head 12 are simultaneously stopped coating, applies
Material no longer flows out, and pole piece 4 is made to generate empty foil interstitial area 43, gap of the empty foil interstitial area 43 between each pole piece 4；
It is repeated in above-mentioned stage etch, continues to produce next pole piece 4.
The pole for having the beneficial effect that the present embodiment is high by the available coating utilization rate of part coating stage of the present embodiment
Ear welding section 42, while other coating areas in Neng Shi tab welding area 42 and pole piece 4 are seamlessly connected, and finally obtain tab welding
Area 42 is coated with the high pole piece 4 of utilization rate, while the present embodiment can determine pole by the opening and closing of the first die head 11 of control
The position of ear welding section 42 improves the scope of application of apparatus for coating, reduces the abnormal risk of battery product, improves life
Produce efficiency and production excellence rate.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified.Therefore, the invention is not limited to above-mentioned specific embodiment, all those skilled in the art exist
Made any conspicuous improvement, replacement or modification all belong to the scope of protection of the present invention on the basis of the present invention.This
Outside, although using some specific terms in this specification, these terms are merely for convenience of description, not to the present invention
Constitute any restrictions.
Claims (10)
1. a kind of Double-mold-head apparatus for coating, including die head (1) and the roll shaft knot being equipped with the die head (1)
Structure (2), it is characterised in that: the die head (1) includes the first die head (11) and is correspondingly arranged with first die head (11)
The second die head (12), first die head (11) is provided with the first gasket (111), and second die head (12) is provided with second
Gasket (121), first gasket (111) and second gasket (121) are correspondingly arranged at first die head (11) and institute
It states between the second die head (12)；First gasket (111) has multiple first diffluence pass (1111), second gasket
(121) there is multiple second diffluence pass (1211), first diffluence pass (1111) and second diffluence pass (1211) dislocation
It is correspondingly arranged.
2. Double-mold-head apparatus for coating according to claim 1, it is characterised in that: the two sides of first gasket (111) are set
The first left side (1112) and the first right side (1113) that are equipped with and at least one be located at first left side (1112) and
The first distributary division (1114) between first right side (1113), the side of adjacent first distributary division (1114) it
Between, the respective side of the corresponding side surface of first distributary division (1114) in marginal position and first left side (1112)
First diffluence pass (1111) is respectively formed between the corresponding side surface of face or the first right side (1113).
3. Double-mold-head apparatus for coating according to claim 2, it is characterised in that: first gasket (111) is additionally provided with
First base portion (1115), first left side (1112), first right side (1113) and first distributary division
(1114) it is arranged at first base portion (1115).
4. Double-mold-head apparatus for coating according to claim 1, it is characterised in that: the two sides of second gasket (121) are set
The second left side (1212) and the second right side (1213) that are equipped with and at least one be located at second left side (1212) and
The second distributary division (1214) between second right side (1213), the side of adjacent second distributary division (1214) it
Between, the respective side of the corresponding side surface of second distributary division (1214) in marginal position and second left side (1212)
The second diffluence pass (1211) is respectively formed between the corresponding side surface of face or the second right side (1213).
5. Double-mold-head apparatus for coating according to claim 4, it is characterised in that: second gasket (121) is additionally provided with
Second base portion (1215), second left side (1212), second right side (1213) and second distributary division
(1214) it is arranged at second base portion (1215).
6. Double-mold-head apparatus for coating according to claim 1, it is characterised in that: further include feeding structure (3), the feed
Structure (3) includes the first feeding device (31) and the second feeding device (32), first feeding device (31) and described first
Die head (11) connection, second feeding device (32) connect with second die head (12).
7. Double-mold-head apparatus for coating according to claim 6, it is characterised in that: first feeding device (31) includes the
One coating valve (311) and the first return valve (312), second feeding device (32) include the second coating valve (321) and second
Return valve (322).
8. Double-mold-head apparatus for coating according to claim 1, it is characterised in that: multiple first diffluence pass (1111) and
Multiple second diffluence pass (1211) are parallel.
9. Double-mold-head apparatus for coating according to claim 1, it is characterised in that: the quantity of first diffluence pass (1111)
The quantity of the first diffluence pass (1111) identical or described with the quantity of second diffluence pass (1211) is shunted than described second
The quantity of mouth (1211) is one more.
10. a kind of pole coating technique of Double-mold-head apparatus for coating, which is characterized in that the Double-mold-head apparatus for coating is wanted for right
1 ~ 9 described in any item Double-mold-head apparatus for coating are sought, the pole coating technique includes:
First coating stage: roll shaft structure (2) drives pole piece rotation, and the first die head (11) and the second die head (12) are simultaneously to rotation
Pole piece be coated；
Part coating stage: the first die head (11) stops coating, and the second die head (12) continues to be coated the pole piece of rotation；
Second coating stage: the first die head (11) and the second die head (12) are simultaneously coated the pole piece of rotation；
The empty foil stage: roll shaft structure (2) continues to drive pole piece rotation, and the first die head (11) and the second die head (12) are simultaneously stopped painting
Cloth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910335039.1A CN110064560A (en) | 2019-04-24 | 2019-04-24 | A kind of Double-mold-head apparatus for coating and its pole coating technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910335039.1A CN110064560A (en) | 2019-04-24 | 2019-04-24 | A kind of Double-mold-head apparatus for coating and its pole coating technique |
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| CN201910335039.1A Pending CN110064560A (en) | 2019-04-24 | 2019-04-24 | A kind of Double-mold-head apparatus for coating and its pole coating technique |
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| CN111525092A (en) * | 2020-04-28 | 2020-08-11 | 惠州亿纬锂能股份有限公司 | Pole piece, preparation method thereof and application of pole piece in battery |
| CN111864179A (en) * | 2020-09-03 | 2020-10-30 | 东莞维科电池有限公司 | Positive pole piece and preparation method thereof, lithium ion battery containing positive pole piece and application of lithium ion battery |
| CN111900323A (en) * | 2020-06-23 | 2020-11-06 | 惠州锂威新能源科技有限公司 | Preparation method of pole piece and preparation method of battery cell |
| CN113714037A (en) * | 2021-08-06 | 2021-11-30 | 珠海冠宇电池股份有限公司 | Preparation device and preparation method of pole piece |
| CN118513209A (en) * | 2024-07-19 | 2024-08-20 | 湖南达力智能装备有限公司 | Pole piece coating system based on single-layer double-coating die head assembly |
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