CN104300156A - Method and equipment for manufacturing electrode sheet - Google Patents
Method and equipment for manufacturing electrode sheet Download PDFInfo
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- CN104300156A CN104300156A CN201410314569.5A CN201410314569A CN104300156A CN 104300156 A CN104300156 A CN 104300156A CN 201410314569 A CN201410314569 A CN 201410314569A CN 104300156 A CN104300156 A CN 104300156A
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- porous plastid
- vibration
- filler
- electrode slice
- assigning unit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
-
- 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
- H01M4/0416—Methods of deposition of the material involving impregnation with a solution, dispersion, paste or dry powder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention provides a method and equipment for manufacturing an electrode sheet, which allows fine particles in a filling agent to penetrate into the deep interior of a porous body when the filling agent is applied onto the porous body. In order to coating the back surface of the porous body (10) with the filling agent having active matters, the equipment (1) for manufacturing the electrode sheet comprises a vibration applying part (34) which applies vibration of a certain frequency to the porous body (10) during the process that the filling agent (20) is coated onto the porous body (10). The vibration applying part (34) comprises a vibration arousing roller (36) configured to be in contact with the back surface of the porous body (10). The vibration arousing roller (36) applies vibration to the active matters of the filling agent (20) through the porous body (10).
Description
Technical field
The present invention relates to the manufacture method to the electrode slice of the filler of porous plastid coating containing active material and manufacturing installation.
Background technology
Lithium rechargeable battery requires Large Copacity.Due to this requirement, inquiring into a kind of metal current collector that can keep the three-dimensional mesh structure of more active material at per unit area of exploitation.In the collector body of this three-dimensional mesh structure, effectively filling active material becomes important topic.
As the device of the porous plastid of three-dimensional mesh structure being filled to filler, proposition has following manufacturing installation, namely vibrator that is electric or machinery is set near the outlet of filler compensation tank, makes above-mentioned exit portion vibrate the manufacturing installation of (such as patent documentation 1).In this manufacturing installation, the viscosity in utilizing the vibration of vibrator the viscosity of filler to be adjusted to bathe with filler is identical, thus suppresses to be applied to the in uneven thickness of the filler of porous plastid.
In addition, the manufacture method having following thermoelectric element is also proposed, such as electric field or magnetic field etc. are applied to the thermoelectricity active semiconductor material on the surface being coated on Porous substrate, thus to the hole filling semiconductor material (such as patent documentation 2) of Porous substrate.
Patent documentation 1: Japanese Patent Publication 3-45865 publication (walking to the 31st row with reference to the 2nd page of the 3rd hurdle the 26th)
Patent documentation 2: Japanese Unexamined Patent Application Publication 2010-510682 publication (with reference to the 5th page [claim 30] and the 6th page [claim 35])
But with regard to the manufacturing installation recorded in patent documentation 1, active material hangs over the structure division of the collector body of Porous, is difficult to make active material expeditiously to collector body internal penetration.
In addition, with regard to the manufacture method recorded in patent documentation 2, the situation lower device existed arranging electromagnetic force generation machine etc. becomes large-scale worry.
Summary of the invention
In view of the foregoing, object is to provide a kind of manufacture method and the manufacturing installation that filler can be filled into effectively the electrode slice of the porous plastid of three-dimensional mesh structure in the present invention.
First scheme of the present invention is a kind of manufacture method of electrode slice, the filler of a side surface coating containing active material of porous plastid described in porous plastid, the feature of the manufacture method of described electrode slice is, when described filler is applied to described porous plastid, described porous plastid is given to the vibration of characteristic frequency.
Second viewpoint of the present invention is a kind of manufacturing installation of electrode slice, the filler of a side surface coating containing active material of porous plastid described in porous plastid, the feature of the manufacturing installation of described electrode slice is, possesses vibration assigning unit, described vibration assigning unit, when described filler is applied to described porous plastid, gives the vibration of characteristic frequency to described porous plastid.
3rd viewpoint of the present invention is the invention according to the second viewpoint, it is characterized in that, described vibration assigning unit gives described vibration to exciting roller, and described exciting roller is configured to the opposite side surface contact with described porous plastid.
4th viewpoint of the present invention is the invention according to the second viewpoint, it is characterized in that, described vibration assigning unit gives described vibration to mobile roller, and described mobile roller is configured to the opposite side surface contact of described porous plastid and described porous plastid is moved.
5th viewpoint of the present invention is the invention according to the 4th viewpoint, it is characterized in that, described vibration assigning unit gives vibration to the described filler before applied.
The manufacture method of the electrode slice of the first viewpoint of the present invention, due to when filler is applied to porous plastid, gives porous plastid by the vibration of characteristic frequency, therefore gives revolving force by vibration to the fine active material in filler.Its result, passes through obtained revolving force, and active material can invade from the space internally, hole of porous plastid effectively.Therefore, it is possible to effectively filler to be filled into the porous plastid of three-dimensional mesh structure.
Second viewpoint of the present invention, to the manufacturing installation of the electrode slice of the 4th viewpoint, possesses the vibration assigning unit of the vibration of characteristic frequency being given porous plastid.Therefore, in the same manner as the manufacture method of the electrode slice of the first viewpoint, active material can utilize revolving force effectively internally to invade from the hole of porous plastid, therefore, it is possible to filler is filled into the porous plastid of three-dimensional mesh structure effectively.
The manufacturing installation of the electrode slice of the 5th viewpoint of the present invention, by giving vibration to the filler before applied, makes the viscosity of filler reduce.Thus, filler more easily can penetrate into porous plastid.Therefore, it is possible to effectively filler to be filled into the porous plastid of three-dimensional mesh structure.
Accompanying drawing explanation
Fig. 1 is the summary construction diagram of the manufacturing installation of the electrode slice that the first execution mode is shown.
Fig. 2 is the summary construction diagram of the manufacturing installation of the electrode slice that the second execution mode is shown.
Fig. 3 is the summary construction diagram of the manufacturing installation of the electrode slice that the 3rd execution mode is shown.
Description of reference numerals
1, the manufacturing installation of 2,3 electrode slices
10 porous plastids
12 donor rollers
14 pressing plates
Roller after 16
18 draw rolls
20 fillers
22 coating parts
24 drying ovens
28 containers
30 force lifts
32 slit die (ス ロ ッ ト ダ イ)
34 vibration assigning unit
36 exciting rollers
38 coating parts
40 base stations
44 rotors
46 dam
48 vibration assigning unit
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described in detail.
1. the first execution mode
(1) overall structure
The manufacturing installation 1 of the electrode slice involved by the first execution mode shown in Fig. 1 possesses: the donor rollers 12 being wound with banded porous plastid 10, the pressing plate 14 porous plastid 10 being pressed to donor rollers 12, as the rear roller 16 of the mobile roller of porous plastid 10 movement making to supply from donor rollers 12 and draw roll 18, the coating part 22 filler 20 being coated on a side surface (hereinafter referred to as surface) of porous plastid 10 and the drying coated drying oven 24 having the porous plastid 10 of filler 20.In addition, although the manufacturing installation 1 of the electrode slice of present embodiment manufactures the device for the electrode slice of lithium rechargeable battery, be not particularly limited to for lithium rechargeable battery.
Porous plastid 10 has the three-dimensional mesh structure forming collector body, arrives inside from the outside and is formed with multiple gap be made up of fine space.Porous plastid 10 has conductivity, and is formed by the foaming body of such as aluminium or copper.
Porous plastid 10 is wrapped in donor rollers 12.Relative to donor rollers 12, in the downstream of the moving direction about porous plastid 10, be disposed with the rear roller 16 and draw roll 18 that are supported by base station 40.The porous plastid 10 sent from donor rollers 12 moves at rear roller 16 and draw roll 18.That is, move under the state of porous plastid 10 roller 16 and draw roll 18 after opposite side surface (hereinafter referred to as the back side) contact.Pressing plate 14 makes porous plastid 10 abut to rear roller 16 with stable state, and the leading section of pushing porous plastid 10 is configured in the upstream side of porous plastid 10 moving direction of rear roller 16.Coating part 22 and drying oven 24 is disposed with between rear roller 16 and draw roll 18.
Filler 20 is containing the slurry as the active material in composite material portion, conductive auxiliary agent and binding agent.Active material selected by the negative pole filler of the positive pole filler of filler 20 according to the electrode slice for positive pole and the electrode slice for negative pole, conductive auxiliary agent are different with adhesive.
Positive pole filler is described.Active material can use such as cobalt acid lithium (LiCoO
2, hereinafter referred to as " LCO "), nickle cobalt lithium manganate (LiNi
1/3mn
1/3co
1/3o
2, hereinafter referred to as " NMC "), LiMn2O4 (LiMn
2o
4, hereinafter referred to as " LMO ") or LiFePO4 (LiFePO
4, hereinafter referred to as " LFP ") etc.Conductive auxiliary agent can use the carbon black of such as acetylene black etc., Ketjen black, vapor-grown carbon fibers (Vapor Grown Carbon Fiber:VGCF), carbon nano-tube (CNT) or graphite etc.Adhesive can use such as polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), ethylene-propylene-diene copolymer (EPDM) or butadiene-styrene rubber (SBR) etc.
Anticathode filler is described.Active material can use such as graphite, silicon monoxide (SiO) or lithium titanate (Li
4ti
5o
12, hereinafter referred to as " LTO ") etc.Conductive auxiliary agent can use carbon nano-tube (CNT), acetylene black (HS100).Adhesive can use the mixture or PVDF etc. of such as carboxymethyl cellulose (CMC) and butadiene-styrene rubber (SBR).
Filler 20 is coated on the surface of porous plastid 10 by coating part 22.The coating part 22 of present embodiment is configured to be coated with filler 20 by punch die rubbing method (ダ イ コ ー タ method).Coating part 22 possesses container 28, force lift 30 and slit die 32, and the filler 20 in container 28 is sent to slit die 32 continuously by force lift 30.Slit die 32 by the filler 20 be supplied to from the coating nozzles of fore-end continuously and discharge equably.The coating weight of the filler 20 to porous plastid 10 is adjusted by the rotation number of force lift 30, the travelling speed of porous plastid 10 and coating width etc.
Except above-mentioned basic structure, the manufacturing installation 1 of the electrode slice involved by present embodiment also possesses the vibration assigning unit 34 of giving the vibration of characteristic frequency from rear side to porous plastid 10.The vibration assigning unit 34 of present embodiment makes exciting roller 36 vibrate, and exciting roller 36 is configured to and the rear-face contact of the porous plastid 10 of movement between rear roller 16 and draw roll 18.Specifically, in vibration assigning unit 34, although not shown lead-out terminal is connected to the rotating shaft of exciting roller 36.Vibration assigning unit 34 is configured to the vibration can giving particular frequency range according to the size of active material, the vibration of such as 10KHz ~ 5MHz.Thus, the vibration of characteristic frequency can be imparted to porous plastid 10 by assigning unit 34 back side via exciting roller 36 is vibrated.
(2) action and effect
Then the action of the manufacturing installation 1 of the electrode slice formed as described above and effect are described.
First, prepare banded porous plastid 10 and be applied to the filler 20 of porous plastid 10.
As filler, when making positive pole filler, first take dispersion liquid containing positive active material, conductive auxiliary agent and adhesive with the mass ratio of regulation.Then, in dispersion liquid, add adhesive and solvent and stir.After this, by adding active material and stirring again, can obtain being adjusted to proper viscosity, the positive pole filler of such as viscosity 5Pas.
When making negative pole filler, first take thickener, negative electrode active material, conductive auxiliary agent and adhesive with the mass ratio of regulation.Then, using soluble in water for the CMC as thickener, after this, drop into native graphite and the SiO of negative electrode active material, stir with autobiography revolution mixing and blending machine.Then, the CNT as conductive auxiliary agent is dropped in this solution, again stir with autobiography revolution mixing and blending machine.Dropping in this solution using being dispersed with as the liquid of the SBR of adhesive, again stirring with autobiography revolution mixing and blending machine.After this, stirring again by adding a small amount of water, can obtain being adjusted to proper viscosity, the negative pole filler of such as viscosity 500mPas.
Then, action filler 20 being applied to porous plastid 10 is described.In addition, action filler 20 being applied to porous plastid 10 is identical when positive pole and negative pole.
First, draw by rear roller 16 and draw roll 18 porous plastid 10 be wrapped in donor rollers 12.Derivative porous plastid 10 is while be pressed in rear roller 16 while move from rear roller 16 to draw roll 18 by pressing plate 14.The translational speed of porous plastid 10 is now such as 50cm/min.For the porous plastid 10 of movement, by vibration assigning unit 34 via exciting roller 36, the vibration in specific frequency range (such as 10KHz ~ 5MHz) is imparted into its back side.
Filler 20 is coated with by the porous plastid 10 of slit die 32 to vibration.Thus, vibration also propagates into the active material be applied in the filler 20 of porous plastid 10.Like this, active material is rotated by the vibration be endowed, and therefore can not hang over the inner face in the countless hole being formed at porous plastid 10, and be immersed in the inside of porous plastid 10.
The porous plastid 10 being coated with filler 20 is transported in drying oven 24.In drying oven 24, by heating the porous plastid 10 (such as, 200 DEG C) being coated with filler 20 with certain temperature, carry out dry filler 20.So electrode slice can be manufactured.
As mentioned above, the manufacturing installation 1 of electrode slice involved according to the present embodiment, vibration is given porous plastid 10 via exciting roller 36 by vibration assigning unit 34, thus active material can internally immerse from the hole of porous plastid 10 effectively.Therefore, filler 20 can be filled into the porous plastid 10 of three-dimensional mesh structure by the manufacturing installation 1 of electrode slice effectively.Especially, even if active material is the Large stone of about 10 ~ 15 μm, it is inner that active material also can be immersed in porous plastid 10.Therefore, even if the particle diameter of active material is large as the active material that uses in lithium rechargeable battery etc., also can guarantees that the fax between porous plastid 10 and active material is passed, obtain good battery behavior.
2. the second execution mode
Then, the manufacturing installation 2 of the electrode slice involved by the second execution mode of the present invention shown in Fig. 2 is described.In addition, in this embodiment, give identical Reference numeral to the structure identical with the first execution mode, and omit the description.
(1) overall structure
The manufacturing installation 2 of the electrode slice of present embodiment is mainly with the difference of above-mentioned first execution mode, and coating part is configured to use comma rubbing method (コ Application マ コ ー タ method) to be coated with filler 20.That is, in present embodiment, donor rollers 12, pressing plate 14, rear roller 16, draw roll 18, coating part 38, drying oven 24 and vibration assigning unit 34 is possessed.
Coating part 38 is by comma rubbing method coating filler 20.Coating part 38 has the rotor 44 on the top being formed in the rear roller 16 be arranged on base station 40.Porous plastid 10 moves between rear roller 16 and rotor 44.Pressing plate 14 forms the dam 46 storing filler 20 between porous plastid 10 and rotor 44.The coating weight to the filler 20 of porous plastid 10 is adjusted by rear roller 16 and the gap of rotor 44, the travelling speed, coating width etc. of porous plastid 10.
Vibration is given porous plastid 10 via exciting roller 36 from rear side by vibration assigning unit 34, and this point is identical with the first execution mode.In this case, exciting roller 36 is arranged on rotor 44 and between rear roller 16 and drying oven 24.
(2) action and effect
Then the action of the manufacturing installation 2 of the electrode slice formed as described above and effect are described.First, prepare porous plastid 10 and be applied to the filler 20 of porous plastid 10.In addition, the filler 20 used is identical with the first execution mode.In addition, in the present embodiment, action filler 20 being applied to porous plastid 10 is also identical in arbitrary situation of positive pole with negative pole.
First, draw by rear roller 16 and draw roll 18 porous plastid 10 be wrapped in donor rollers 12.Derivative porous plastid 10 is while be pressed on rear roller 16 while through moving to draw roll 18 between roller 16 and rotor 44 later by pressing plate 14.The thickness of applied filler 20 is adjusted by the gap (such as, 350 ~ 500 μm) between rotor 44 and porous plastid 10.For the porous plastid 10 of movement, by vibration assigning unit 34 via exciting roller 36, the vibration in specific frequency range (such as 10KHz ~ 5MHz) is imparted into its back side.Thus, vibration also propagates into the active material be applied in the filler 20 of porous plastid 10.Like this, active material is rotated by the vibration be endowed, and therefore can not hang over the inner face in the countless hole being formed at porous plastid 10, and be immersed in the inside of porous plastid 10.
The porous plastid 10 being coated with filler 20 is transported in drying oven 24.In drying oven 24, be coated with the porous plastid 10 of filler 20 by heating, carry out dry filler 20.Thus, electrode slice is manufactured.
As mentioned above, the manufacturing installation 2 of electrode slice involved according to the present embodiment, because vibration is given porous plastid 10, therefore, it is possible to obtain the effect identical with above-mentioned first execution mode via exciting roller 36 by vibration assigning unit 34.
3. the 3rd execution mode
Then, the manufacturing installation 3 of the electrode slice involved by the 3rd execution mode of the present invention shown in Fig. 3 is described.In addition, in this embodiment, give identical Reference numeral to the structure identical with the second execution mode, and omit the description.
(1) overall structure
The manufacturing installation 3 of the electrode slice of present embodiment is with the difference of above-mentioned second execution mode, the base station 40 of roller 16 and rotor 44 after vibration assigning unit 48 is attached to and rotatably supports.
The vibration of required frequency is given base station 40 by the vibration assigning unit 48 of present embodiment.Specifically, vibration assigning unit 48 is arranged between base station 40 and floor (not shown), vibration is given base station 40 itself.Thus, the rear roller 16 supported by base station 40 and rotor 44 vibrate.The vibration of characteristic frequency is given porous plastid 10 via rear roller 16 from rear side by vibration assigning unit 48.Further, vibrate assigning unit 48 and via rotor 44, the vibration of characteristic frequency is given the filler 20 being full of dam 46.The vibration assigning unit 48 of present embodiment is configured to the vibration can giving particular frequency range according to the size of active material in the same manner as first and second execution mode, such as 10KHz ~ 5MHz.
(2) action and effect
Then the action of the manufacturing installation 3 of the electrode slice formed as described above and effect are described.First, prepare porous plastid 10 and be applied to the filler 20 of porous plastid 10.In addition, the filler 20 used is identical with the first execution mode.In addition, in present embodiment, action filler 20 being applied to porous plastid 10 is also identical in arbitrary situation of positive pole with negative pole.
First, draw by rear roller 16 and draw roll 18 porous plastid 10 be wrapped in donor rollers 12.Derivative porous plastid 10 is while be pressed on rear roller 16 while through moving to draw roll 18 between roller 16 and rotor 44 later by pressing plate 14.The thickness of applied filler 20 is adjusted by the gap (such as, 350 ~ 500 μm) between rotor 44 and porous plastid 10.For the porous plastid 10 of movement, by vibration assigning unit 48 via rear roller 16, the vibration in specific frequency range (such as 10KHz ~ 5MHz) is imparted into its back side.Thus, vibration also propagates into the active material be applied in the filler 20 of porous plastid 10.Like this, active material is rotated by the vibration be endowed, and can not hang over the inner face in the countless hole being formed at porous plastid 10, and be immersed in the inside of porous plastid 10.And, in this case, vibration also via rotor 44 be imparted into applied before filler 20.By being endowed vibration, viscosity reduces filler 20.Reduced by viscosity, the mobility of filler 20 improves, and therefore more easily penetrates into the inside of porous plastid 10.
The porous plastid 10 being coated with filler 20 is transported in drying oven 24.In drying oven 24, be coated with the porous plastid 10 of filler 20 by heating, carry out dry filler 20.Thus, electrode slice is manufactured.
As mentioned above, the manufacturing installation 3 of electrode slice involved according to the present embodiment, because vibration is given porous plastid 10, therefore, it is possible to obtain the effect identical with above-mentioned first execution mode via rear roller 16 by vibration assigning unit 48.And, in this case, also give filler 20 by vibration via rotor 44, thus the mobility of filler can be improved.Therefore, filler 20 more effectively can be filled into porous plastid 10 by the manufacturing installation 3 of electrode slice.
4. variation
The present invention is not limited to above-mentioned execution mode, and can carry out suitable change in the scope of main idea of the present invention.
When above-mentioned first execution mode, the example that porous plastid 10 is given in vibration is illustrated via exciting roller 36 by vibration assigning unit 34, but the present invention is not limited thereto.Such as, vibrate assigning unit 34 also can via as the rear roller 16 of mobile roller or draw roll 18 by vibration imparting porous plastid 10.
When above-mentioned 3rd execution mode, the example that porous plastid 10 is given in vibration is illustrated via the rear roller 16 as mobile roller by vibration assigning unit 48, but the present invention is not limited thereto.Such as, vibrate assigning unit 48 and also can give porous plastid 10 via the draw roll 18 as mobile roller by vibration.In this case, by the lead-out terminal of vibration assigning unit 48 being connected to the rotating shaft of draw roll 18, porous plastid 10 can be given the vibration of required frequency range via draw roll 18.
In addition, the modulator that assigning unit 34,48 also can possess the frequency signal can modulated for generating the vibration that should be energized is vibrated.Thus, if carry out suitable frequency translation to frequency signal thus the frequency of adjustment exciting, then the particle size of active material that can comprise according to the proportion of used filler 20, filler 20 or the viscosity etc. of filler 20 are adjusted to optimal frequency vibration.
And, in above-mentioned execution mode, give vibration while the situation of filling filler 20 is illustrated to the porous plastid 10 of band shape, but the present invention is not limited thereto.Such as, also the porous plastid 10 of band shape can be cut into short strip shape (short Books shape), give vibration while fill filler 20 to the porous plastid of short strip shape.
5. embodiment
For the battery lead plate utilizing embodiment 1 to the embodiment 9 manufactured to the manufacturing installation that the 3rd execution mode is corresponding with the first execution mode, have rated filling rate.Below, be specifically described.
(1) test portion
Use the active material shown in table 1, conductive auxiliary agent and adhesive, utilize the main points illustrated in the above-described first embodiment to make filler, and by coating part, this filler is applied to porous plastid.In first to the 6th embodiment, the viscosity of filler is adjusted to 5Pas.In 7th to the 9th embodiment, the viscosity of filler is adjusted to 500mPas.Donor rollers and rear roller use the rod that diameter is 150mm.Porous plastid is thickness 200 μm, the aluminum of width 30cm or three-dimensional mesh structure body made of copper, makes it move with 50cm/min.The three-dimensional mesh structure body of aluminum uses porosity to be the structure of 85%, and three-dimensional mesh structure body made of copper uses porosity to be the structure of 80%.
When using the coating of comma rubbing method, the gap between rotor and porous plastid is made to be 350 ~ 500 μm.Carry out adjusting and make the battery capacity of applied active material become 10mAh/cm
2.Frequency is set between 10kHz ~ 5MHz variable by vibration assigning unit, and output is fixed as 100W.Be fixed as in the drying oven of 200 DEG C in temperature, the drying coated porous plastid having filler, makes the electrode slice involved by embodiment.
The cutting punch of dried electrode slice 3cm × 4cm size is carried out punching press, makes the battery lead plate evaluated.As opposite pole use, metal Li is stamped into identical size, clips the barrier film of microporous polyethylene, be inserted in aluminium lamination pressure bag.After this, at ethylene carbonate (EC): inject the LiPF containing 1M in the solvent of diethyl carbonate (DEC)=1:1
6electrolyte, carry out vacuum seal, make laminated cell involved by embodiment.Embodiment 1,7 and 8 corresponds to the first execution mode, and embodiment 2 and 3 corresponds to above-mentioned variation, and embodiment 4,5 and 6 corresponds to above-mentioned second execution mode, and embodiment 9 corresponds to above-mentioned 3rd execution mode.
In addition, for above-described embodiment, the electrode slice involved by comparative example being coated with filler by not giving vibration to porous plastid has made laminated cell.Comparative example 1 corresponds to embodiment 1 ~ 3, and comparative example 2 corresponds to embodiment 4, and comparative example 3 corresponds to embodiment 5, and comparative example 4 corresponds to embodiment 6, and comparative example 5 corresponds to embodiment 7, and comparative example 6 corresponds to embodiment 8.The formation of the filler of the electrode slice involved by above-described embodiment and comparative example and application conditions are shown in Table 1.
[table 1]
(2) evaluation of filling rate
To made electrode slice, carry out the quantitative assessment of the filling rate to the active material in porous plastid.In addition, also comprise solvent in filler except the solid constituent of active material, adhesive and conductive auxiliary agent, filling rate is maximum can not higher than the ratio of solid constituent.Such as, when the ratio of the solid constituent of filler is 80%, the peak filling rate can filled to porous plastid is 80% of the solvent of removing 20%.
Filling rate (filling up the volume in the dried composite material portion of the gap of porous plastid)/(volume of the gap of porous plastid) represents.The volume of the gap of porous plastid represents with (porous plastid being assumed to be volume during flat board)-(volume of porous plastid structure division).In addition, the filler removing being deposited in the top of porous plastid is calculated.The results are shown in table 2.And, calculate (filling rate)/(solid constituent ratio), and be shown in table 2 as actual effect filling rate.According to this result, the actual effect filling rate of embodiment corresponding respectively and comparative example is compared, known compared with comparative example in embodiment filler effectively filled.
[table 2]
(3) evaluation of discharge capacity
Then, the evaluation of discharge capacity has been carried out to made laminated cell.Discharge and recharge is carried out with the condition shown in table 3 under the atmosphere temperature of 25 DEG C.As shown in table 3, can confirm discharge capacity is, embodiment 1 ~ 9 is 5.4 ~ 7.7mAh/cm
2, on the other hand, comparative example 1 ~ 6 is 4.0 ~ 4.8.High from the discharge capacity of the known electrode slice compared with comparative example involved by embodiment of this result.The electrode slice that can obtain high discharge capacity can be manufactured by the manufacturing installation involved by present embodiment thereby, it is possible to confirm.
[table 3]
Claims (5)
1. the manufacture method of an electrode slice, the filler of a side surface coating containing active material of porous plastid described in porous plastid, the feature of the manufacture method of described electrode slice is, when described filler is applied to described porous plastid, described porous plastid is given to the vibration of characteristic frequency.
2. the manufacturing installation of an electrode slice, the filler of a side surface coating containing active material of porous plastid described in porous plastid, the feature of the manufacturing installation of described electrode slice is, possesses vibration assigning unit, described vibration assigning unit, when described filler is applied to described porous plastid, gives the vibration of characteristic frequency to described porous plastid.
3. the manufacturing installation of electrode slice according to claim 2, is characterized in that, described vibration assigning unit gives described vibration to exciting roller, and described exciting roller is configured to the opposite side surface contact with described porous plastid.
4. the manufacturing installation of electrode slice according to claim 2, is characterized in that, described vibration assigning unit gives described vibration to mobile roller, and described mobile roller is configured to the opposite side surface contact of described porous plastid and described porous plastid is moved.
5. the manufacturing installation of electrode slice according to claim 4, is characterized in that, described vibration assigning unit gives vibration to the described filler before applied.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-150681 | 2013-07-19 | ||
| JP2013150681A JP2015022916A (en) | 2013-07-19 | 2013-07-19 | Method and device for manufacturing electrode sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104300156A true CN104300156A (en) | 2015-01-21 |
Family
ID=52319800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410314569.5A Pending CN104300156A (en) | 2013-07-19 | 2014-07-03 | Method and equipment for manufacturing electrode sheet |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2015022916A (en) |
| KR (1) | KR20150010617A (en) |
| CN (1) | CN104300156A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102018217764A1 (en) | 2017-12-29 | 2019-07-04 | Robert Bosch Gmbh | Process for producing an electrode, electrode and battery cell |
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| JPH10188961A (en) * | 1996-12-27 | 1998-07-21 | Fuji Film Selltec Kk | Manufacture of sheetlike electrode plate and chemical battery |
| JPH11192451A (en) * | 1997-11-07 | 1999-07-21 | Nippei Toyama Corp | Coater and coating |
| JP2003170104A (en) * | 2001-09-27 | 2003-06-17 | Toyota Motor Corp | Direct bar coater |
| JP2010027673A (en) * | 2008-07-15 | 2010-02-04 | Nihon Micro Coating Co Ltd | Method and device for manufacturing sheet electrode |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6251152A (en) * | 1985-08-28 | 1987-03-05 | Shin Kobe Electric Mach Co Ltd | Manufacture of electrode plate for storage battery |
| DE19621316C2 (en) * | 1996-05-28 | 2002-03-07 | Deutsche Automobilgesellsch | Metallized fiber structure scaffold with treated edge or end faces for use in accumulators as an electrode or recombiner, as well as manufacturing processes |
| BRPI1014910A2 (en) * | 2009-05-28 | 2016-04-19 | Nissan Motor | negative electrode for secondary lithium-ion battery and battery using the same |
-
2013
- 2013-07-19 JP JP2013150681A patent/JP2015022916A/en active Pending
-
2014
- 2014-07-03 CN CN201410314569.5A patent/CN104300156A/en active Pending
- 2014-07-16 KR KR1020140089631A patent/KR20150010617A/en not_active Application Discontinuation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0992272A (en) * | 1995-09-19 | 1997-04-04 | Daiden Co Ltd | Electrode of secondary battery, its manufacture and secondary battery |
| JPH10188961A (en) * | 1996-12-27 | 1998-07-21 | Fuji Film Selltec Kk | Manufacture of sheetlike electrode plate and chemical battery |
| JPH11192451A (en) * | 1997-11-07 | 1999-07-21 | Nippei Toyama Corp | Coater and coating |
| JP2003170104A (en) * | 2001-09-27 | 2003-06-17 | Toyota Motor Corp | Direct bar coater |
| JP2010027673A (en) * | 2008-07-15 | 2010-02-04 | Nihon Micro Coating Co Ltd | Method and device for manufacturing sheet electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015022916A (en) | 2015-02-02 |
| KR20150010617A (en) | 2015-01-28 |
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Application publication date: 20150121 |