CN208352431U - A kind of pole piece benefit lithium system - Google Patents
A kind of pole piece benefit lithium system Download PDFInfo
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- CN208352431U CN208352431U CN201820992740.1U CN201820992740U CN208352431U CN 208352431 U CN208352431 U CN 208352431U CN 201820992740 U CN201820992740 U CN 201820992740U CN 208352431 U CN208352431 U CN 208352431U
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- lithium
- pole piece
- lithium liquid
- liquid
- transferring roller
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 229
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 210
- 230000008901 benefit Effects 0.000 title abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 123
- 238000001816 cooling Methods 0.000 claims abstract description 46
- 238000012546 transfer Methods 0.000 claims abstract description 40
- 238000004804 winding Methods 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 38
- 239000011248 coating agent Substances 0.000 claims description 38
- 238000000576 coating method Methods 0.000 claims description 38
- 238000004140 cleaning Methods 0.000 claims description 24
- 238000010422 painting Methods 0.000 claims description 18
- 230000008018 melting Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 239000000112 cooling gas Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 14
- 230000004888 barrier function Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 23
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 13
- 229910001416 lithium ion Inorganic materials 0.000 description 13
- 230000008569 process Effects 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000007773 negative electrode material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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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- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model relates to technical field of battery production more particularly to a kind of pole piece to mend lithium system, and it includes unreeling device for pole piece, pole piece winding device, lithium liquid supply unit, lithium liquid cooling device and lithium liquid transfer device which, which mends lithium system,；Unreeling device for pole piece is used to wind the pole piece after mending lithium for unreeling pole piece, pole piece winding device；Lithium liquid supply unit is for supplying lithium liquid and lithium liquid being coated to lithium liquid transfer device；Lithium liquid cooling device is for the cooling lithium liquid being coated on lithium liquid transfer device through lithium liquid supply unit；Lithium liquid transfer device includes two transferring rollers being oppositely arranged, and two transferring roller roll-ins cooperate and the lithium liquid being coated on transferring roller can be transferred on pole piece.Compared with the prior art, lithium liquid can be directly transferred on pole piece by benefit lithium system provided by the utility model by transferring roller, without carrying out transfer by individual barrier film base material again, therefore save the usage amount of barrier film base material, production cost is reduced, while improving production efficiency.
Description
Technical field
The utility model relates to technical field of battery production more particularly to a kind of pole piece to mend lithium system.
Background technique
Lithium ion battery is because it is high with operating voltage, energy density is big, have extended cycle life, memory-less effect etc. is many excellent
Point, and rapidly in portable electronic products such as portable mobile power supply, mobile phone, portable computer, camera and video cameras
Field promotes and applies, with New Energy Industries such as the establishments and energy storage of China " energy conservation and new-energy automobile industrial development planning "
Further genralrlization, the demand of power and accumulation energy type lithium ion battery will significantly increase.
Wherein, with the development of new-energy automobile, course continuation mileage and service life requirement of the existing market to electric car
It is higher and higher, and the course continuation mileage of electric vehicle and service life are mostly determined by lithium ion battery, and existing lithium ion
The energy density and cycle life of battery can no longer meet the growing demand in market.For existing negative electrode material
Speech can not only consume a part in positive electrode during initial charge because forming solid electrolyte film (SEI film)
Lithium ion, but also the irreversible abjection because of a part of lithium ion in negative electrode material, so that the library for the first time of lithium ion battery
Human relations efficiency cannot reach 100%, for example, graphite material coulombic efficiency for the first time 90% or so, other negative electrode materials such as silicon is negative
Pole material, although specific capacity is higher, its for the first time coulombic efficiency only between 65~85%.So if can additionally replenish negative
The lithium ion in positive electrode being lost in the material of pole, it will be able to increase substantially the energy density of lithium ion battery.
A kind of additional method for mending lithium be a part of lithium metal is added in pole piece in advance before preparing battery core, such as
Application No. is 201210237240 Chinese patent applications to make gold by making alive and vibration for expensive metallic lithium powder
Belong to lithium powder to invest on pole piece, the pole piece of lithium then must be mended by cold compaction.Metallic lithium powder is invested to the benefit on pole piece in this application
Lithium process needs high-precision equipment, moreover, this method is mainly to be realized by electrostatic vibration, compares and is difficult to guarantee uniformly
Property, it is difficult to mend the monitoring of lithium amount, while requirement of this method for environment is high, and the metallic lithium powder that will be dispersed is needed to be placed in special set
It is handled in standby, and efficiency is lower.
In addition, there are also being placed among first base material and the second substrate using by lithium band, by roll-in bonder,
Lithium band is bonded in the second substrate surface.Again by stripping off device, by the second substrate from the first base material after roll-in, lithium band, the
It is stripped out in two substrates.First base material and lithium band after removing pass through set composite again, by the lithium belt on first base material surface
It is transferred to final carrier (such as collector) surface.Thin lithium band must be adhered to first base material surface by the technique, be retransferred
To anode surface, therefore the consumption of first base material is huge, and cost is also higher.
In addition, continuous thin metal lithium bands are made because more difficult under the conditions of current technology, simultaneously as lithium metal
Poor be also difficult to realize of mechanical performance invests thin lithium metal on pole piece, if using the method for vacuum evaporation that lithium metal is attached
In on pole piece, then the difficult requirement for meeting mass production of the very low comparison of the structural establishment production efficiency, while the method requirement being deposited
Very high control precision and to the waste of lithium metal than more serious.
Utility model content
One of the purpose of this utility model is: in view of the deficiencies of the prior art, and providing that a kind of structure is simple, operation letter
Just, the low electrodes of lithium-ion batteries of manufacturing cost mends lithium system, and what which can be quick, efficient, uniform, quantitative gives lithium ion
The pole piece of battery encloses lithium metal, so that the energy density and cycle life of battery be significantly increased.
To achieve the goals above, the utility model uses following technical scheme:
A kind of pole piece benefit lithium system, including unreeling device for pole piece, pole piece winding device, lithium liquid supply unit, lithium liquid cooling are but
Device and lithium liquid transfer device；
The unreeling device for pole piece is used to wind the pole piece after mending lithium for unreeling pole piece, the pole piece winding device；
The lithium liquid supply unit is for supplying lithium liquid and lithium liquid being coated to lithium liquid transfer device；
The lithium liquid cooling device is for the cooling lithium liquid being coated on lithium liquid transfer device through lithium liquid supply unit；
The lithium liquid transfer device includes two transferring rollers being oppositely arranged, and two transferring roller roll-ins cooperate and can will apply
The lithium liquid overlayed on transferring roller is transferred on the pole piece.
The preferred embodiment that lithium system is mended as pole piece described in the utility model, further includes antitack agent painting device, described
Antitack agent painting device is used for the external coating antitack agent to the transferring roller.After lithium liquid reaches pole piece and cools down, lithium liquid is solid
Change is attached on pole piece, and the bonding force between solid lithium film and pole piece is far longer than bonding between lithium film and antitack agent at this time
Power, therefore, the lithium on transferring roller can be transferred completely into pole piece up, without being sticked on transferring roller.
The preferred embodiment that lithium system is mended as pole piece described in the utility model, further includes cleaning device, the sanitizer cartridge
Set the surface for clearing up the transferring roller.The cleaning device is removed under abnormal conditions on transferring roller in real time in the form of scraper
Remaining lithium to guarantee the cleanliness of transferring roller and mends the consistency of lithium with this.
The preferred embodiment of lithium system, the lithium liquid supply unit, the lithium liquid are mended as pole piece described in the utility model
Cooling device, the antitack agent painting device, the cleaning device quantity be disposed as at least two, and each device is averaged cloth
It is located at the two sides of lithium liquid transfer device.
The preferred embodiment that lithium system is mended as pole piece described in the utility model, further includes pole piece winding cooling device, institute
It states pole piece winding cooling device and wraps up the pole piece winding device.During pole piece winding, sprayed by pole piece winding cooling device
Drying cooling air out is cooled down in real time.
The preferred embodiment of lithium system is mended as pole piece described in the utility model, the antitack agent painting device includes coating
Brush and antitack agent stock chest, the coating brush are contacted with the transferring roller and by the antitack agent brushing in the transferring roller
Surface.
The preferred embodiment of lithium system is mended as pole piece described in the utility model, the cleaning device includes cleaning scraper,
The surface of the blade and the transferring roller of the cleaning scraper fits, and the blade direction and the transfer of the cleaning scraper
The rotation direction of roller is at an acute angle.
The preferred embodiment of lithium system is mended as pole piece described in the utility model, the lithium liquid supply unit includes lithium metal
It melts tank and squeezes coating head device, connected between the lithium metal melting tank and extruding coating head device by liquid-transport pipe-line, it is described
The surface that lithium liquid is coated in the transferring roller by squeezing coating head device.
The preferred embodiment of lithium system is mended as pole piece described in the utility model, the lithium liquid cooling device includes air-cooled list
Member conveys dry cooling gas to the corresponding region of the roll surface of transfer roll coating lithium liquid；And temperature measuring unit, measurement transfer roller coating
Cover the temperature and feedback control wind cooling unit of the corresponding region of the roll surface of lithium liquid.
The two of the purpose of this utility model are: providing a kind of quick, efficient, uniform, quantitative pole piece benefit lithium method, packet
Include following steps:
The preparation of S1, lithium liquid: lithium ingot is placed in lithium metal melting tank, and adds lithium ingot using 100~250 DEG C of temperature
Heat carries out uniform stirring to molten condition, and lithium liquid is made；
The coating of S2, lithium liquid: the lithium liquid in step S1 is transported to by liquid-transport pipe-line squeezes coating head device, by squeezing coating head
Lithium liquid is squeezed out and is uniformly coated to transferring roller by device；Wherein, liquid-transport pipe-line and extruding coating head device are both needed to be protected
Temperature, holding temperature are 100~200 DEG C；
The cooling of S3, lithium liquid: lithium liquid cooling device uses 0~15 DEG C of temperature, the drying cooling air of dew point -20~-65 DEG C
Body cools down the lithium liquid on transferring roller, and the temperature of the arrival pole piece of lithium liquid is made to be reduced to 50~180 DEG C；
The transfer of S4, lithium liquid: pole piece passes through the roll gap of two transferring rollers under the drive of unwinding device and wrap-up, makes
It is uniformly transferred to pole piece through the cooling lithium liquid of step S3, and the pole piece after mending lithium is wound by wrap-up.
The preferred embodiment that lithium method is mended as pole piece described in the utility model in step S2, is coated to transfer roller surface
Lithium liquid layer with a thickness of 0.5~20 μm.
The preferred embodiment that lithium method is mended as pole piece described in the utility model in step S2, is coated to transfer in lithium liquid
Before roller, first using antitack agent painting device then transferring roller external coating antitack agent is coated to by surface by lithium liquid again and had
The transferring roller of antitack agent.
The preferred embodiment that lithium method is mended as pole piece described in the utility model in step S4, is transferred to pole piece in lithium liquid
Afterwards, the surface before arriving at antitack agent painting device to transferring roller by cleaning device is cleared up.
The preferred embodiment that lithium method is mended as pole piece described in the utility model, in step S4, the water content of pole piece≤
200PPM。
Compared with the prior art, the utility model at least has the following advantages:
1) lithium liquid can be directly transferred on pole piece by benefit lithium system provided by the utility model by transferring roller, without
Transfer is carried out by individual barrier film base material again, therefore has saved the usage amount of barrier film base material, production cost is reduced, mentions simultaneously
High production efficiency.
2) the utility model lithium up process is by squeezing coating head for lithium metal liquid extrusion coated on transferring roller, using dry
Realize that electrodes of lithium-ion batteries lithium up process, technique are very simple after pathogenic dryness cooling and the roll-in of transferring roller transfer；And this is practical
New structure is simple, and equipment manufacturing costs are low, therefore easily realizes industrialized mass production.
3) the utility model can exchange extruding coating head according to the requirement of technique and realize that benefit lithium amount is controllable, to reach high
Effect, uniform consistent pole piece mend lithium effect.
4) the utility model makes lithium liquid be coated in the transferring roller of external coating antitack agent by setting antitack agent painting device
On, since the bonding force of lithium film and pole piece is much larger than the bonding force of lithium film and antitack agent after the transferred roller roll-in transfer of pole piece, because
And the problems such as can effectively solve the problem that roll banding when lithium membrane pressure is closed, adhesion, increase substantially the consistency for mending lithium.
Detailed description of the invention
Fig. 1 is that the pole piece of the utility model mends the structural schematic diagram of lithium system.
In figure: 1- unreeling device for pole piece；2- pole piece winding device；3- lithium liquid supply unit；31- lithium metal melts tank；32-
Squeeze coating head device；33- liquid-transport pipe-line；4- lithium liquid cooling device；41- wind cooling unit；42- temperature measuring unit；5- lithium liquid transfer dress
It sets；6- antitack agent painting device；7- cleaning device；8- pole piece winding cooling device；9- pole piece.
Specific embodiment
To keep the technical solution of the utility model and advantage clearer, below in conjunction with specific embodiment and specification
Attached drawing is described in further detail the utility model and its advantages, but the embodiments of the present invention is not limited to
This.
Embodiment 1
As shown in Figure 1, a kind of pole piece mends lithium system, including unreeling device for pole piece 1, pole piece winding device 2, lithium liquid supply dress
Set 3, lithium liquid cooling device 4 and lithium liquid transfer device 5；Wherein, unreeling device for pole piece 1 is for unreeling pole piece, pole piece winding device 2
For winding the pole piece after mending lithium；Lithium liquid supply unit 3 is for supplying lithium liquid and lithium liquid being coated to lithium liquid transfer device 5；Lithium
Liquid cooling device 4 is for the cooling lithium liquid being coated on lithium liquid transfer device 5 through lithium liquid supply unit 3；Lithium liquid transfer device 5 wraps
Two transferring rollers being oppositely arranged are included, transferring roller is using high temperature resistant and internal cooling metallic roll or ceramic roller, two transferring rollers
Roll-in cooperates and the lithium liquid being coated on transferring roller can be transferred on pole piece 9.
In the present embodiment, lithium liquid supply unit 3, lithium liquid cooling device 4, antitack agent painting device 6, cleaning device 7 number
Amount is disposed as two, and each device is averagely laid in the two sides of lithium liquid transfer device 5.
In the present embodiment, lithium liquid supply unit 3 includes lithium metal melting tank 31 and squeezes coating head device 32, and lithium metal melts
It is connected between tank 31 and extruding coating head device 32 by liquid-transport pipe-line 33, lithium liquid is coated in transferring roller by squeezing coating head device 32
Surface.
In the present embodiment, lithium liquid cooling device 4 includes wind cooling unit 41, to the correspondence area of the roll surface of transfer roll coating lithium liquid
Domain conveys dry cooling gas；And temperature measuring unit 42, the temperature of the corresponding region of the roll surface of measurement transfer roll coating lithium liquid is simultaneously
Feedback control wind cooling unit 41.
In the present embodiment, mending lithium system further includes antitack agent painting device 6, and antitack agent painting device 6 is used for transferring roller
External coating antitack agent.When lithium liquid reaches pole piece and after cool down, the solidification of lithium liquid is attached on pole piece, at this time solid lithium film with
Bonding force between pole piece is far longer than the bonding force between lithium film and antitack agent, and therefore, the lithium on transferring roller can be shifted all
It is gone on to pole piece, without being sticked on transferring roller.Preferably, antitack agent painting device 6 includes coating brush and antitack agent storing
Slot, coating brush are contacted with transferring roller and by antitack agent brushing on the surface of transferring roller.
In the present embodiment, mending lithium system further includes cleaning device 7, and cleaning device 7 is used to clear up the surface of transferring roller.This is clear
Clean device 7 is removed lithium remaining on transferring roller under abnormal conditions in real time, is guaranteed the cleaning of transferring roller with this in the form of scraper
Degree and the consistency for mending lithium.Preferably, cleaning device 7 includes cleaning scraper, clears up the blade of scraper and the surface phase of transferring roller
Fitting, and the blade direction for clearing up scraper is at an acute angle with the rotation direction of transferring roller, can make the cleaning effect for clearing up scraper in this way
Fruit reaches best.
In the present embodiment, mending lithium system further includes pole piece winding cooling device 8, and pole piece winding cooling device 8 wraps up pole piece
Wrap-up 2.During pole piece winding, the drying cooling air sprayed by pole piece winding cooling device 8 is cooled down in real time.
Compared with the prior art, lithium liquid can be directly transferred to by benefit lithium system provided by the utility model by transferring roller
On pole piece, without carrying out transfer by individual barrier film base material again, therefore the usage amount of barrier film base material is saved, reduced life
Cost is produced, while improving production efficiency.In addition, the utility model is coated in lithium liquid by setting antitack agent painting device 6
On the transferring roller of external coating antitack agent, since the bonding force of lithium film and pole piece is much larger than lithium after the transferred roller roll-in transfer of pole piece
The bonding force of film and antitack agent, it is thus possible to effectively solve lithium membrane pressure close when roll banding, adhesion the problems such as, make mend lithium consistency
It increases substantially.
Embodiment 2
As shown in Figure 1, a kind of benefit lithium system using embodiment 1, which carries out pole piece, mends lithium method, comprising the following steps:
The preparation of S1, lithium liquid: lithium ingot is placed in lithium metal melting tank 31, and makes lithium ingot using 100~250 DEG C of temperature
It is heated to molten condition, while carrying out uniform stirring, lithium liquid is made；
The coating of S2, lithium liquid: the lithium liquid in step S1 is transported to by liquid-transport pipe-line 33 squeezes coating head device 32, passes through extruding
Lithium liquid is squeezed out and is uniformly coated to transferring roller by coating head device 32；Wherein, liquid-transport pipe-line 33 and extruding coating head device 32
It is both needed to be kept the temperature, holding temperature is 100~200 DEG C；
The cooling of S3, lithium liquid: lithium liquid cooling device 4 uses 0~15 DEG C of temperature, the drying cooling air of dew point -20~-65 DEG C
Body cools down the lithium liquid on transferring roller, and the temperature of the arrival pole piece of lithium liquid is made to be reduced to 50~180 DEG C；
The transfer of S4, lithium liquid: pole piece passes through the roll gap of two transferring rollers under the drive of unwinding device and wrap-up, makes
It is uniformly transferred to pole piece through the cooling lithium liquid of step S3, and the pole piece after mending lithium is wound by wrap-up.
Preferably, in step S2, be coated to transfer roller surface lithium liquid layer with a thickness of 0.5~20 μm.If lithium liquid layer
Thickness is too low, then cannot achieve and carry out effective benefit lithium to pole piece, easy in transfer process if the thickness of lithium liquid layer is blocked up
There is lithium liquid surface layer and removes obscission.
Preferably, in step S2, before lithium liquid is coated to transferring roller, first using antitack agent painting device 6 to transferring roller
Then lithium liquid is coated to the transferring roller that surface has antitack agent again by external coating antitack agent.
Preferably, in step S4, after lithium liquid is transferred to pole piece, antitack agent is arrived to transferring roller by cleaning device 7 and is applied
Surface before brush device 6 is cleared up.
Preferably, in step S4, water content≤200PPM of pole piece.
Compared with the prior art, the utility model lithium up process is by squeezing coating head for lithium metal liquid extrusion coated in transfer
On roller, electrodes of lithium-ion batteries lithium up process is realized after the roll-in transfer of drying air cooling and transferring roller, technique is very
Simply；And the utility model structure is simple, equipment manufacturing costs are low, therefore easily realize industrialized mass production.In addition, this reality
Realize that benefit lithium amount is controllable with the novel extruding coating head that can exchange according to the requirement of technique, to reach efficient, uniform consistent
Pole piece mends lithium effect.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to above-mentioned specific embodiment, all this field skills
It is practical new that art personnel any conspicuous improvement made on the basis of the utility model, replacement or modification belong to this
The protection scope of type.In addition, these terms are intended merely to facilitate although using some specific terms in this specification
It is bright, any restrictions are not constituted to the utility model.
Claims (9)
1. a kind of pole piece mends lithium system, it is characterised in that: including unreeling device for pole piece, pole piece winding device, lithium liquid supply unit,
Lithium liquid cooling device and lithium liquid transfer device；
The unreeling device for pole piece is used to wind the pole piece after mending lithium for unreeling pole piece, the pole piece winding device；
The lithium liquid supply unit is for supplying lithium liquid and lithium liquid being coated to lithium liquid transfer device；
The lithium liquid cooling device is for the cooling lithium liquid being coated on lithium liquid transfer device through lithium liquid supply unit；
The lithium liquid transfer device includes two transferring rollers being oppositely arranged, and two transferring roller roll-ins cooperate and can will be coated in
Lithium liquid on transferring roller is transferred on the pole piece.
2. a kind of pole piece according to claim 1 mends lithium system, it is characterised in that: further include antitack agent painting device, institute
Antitack agent painting device is stated for the external coating antitack agent to the transferring roller.
3. a kind of pole piece according to claim 2 mends lithium system, it is characterised in that: it further include cleaning device, the cleaning
Device is used to clear up the surface of the transferring roller.
4. a kind of pole piece according to claim 1 mends lithium system, it is characterised in that: it further include pole piece winding cooling device,
The pole piece winding cooling device wraps up the pole piece winding device.
5. a kind of pole piece according to claim 3 mends lithium system, it is characterised in that: the lithium liquid supply unit, the lithium
Liquid cooling device, the antitack agent painting device, the cleaning device quantity be disposed as at least two, and each device is average
It is laid in the two sides of lithium liquid transfer device.
6. a kind of pole piece according to claim 2 mends lithium system, it is characterised in that: the antitack agent painting device includes applying
Brush and antitack agent stock chest are covered, the coating brush is contacted with the transferring roller and by the antitack agent brushing in the transferring roller
Surface.
7. a kind of pole piece according to claim 3 mends lithium system, it is characterised in that: the cleaning device includes that cleaning is scraped
The surface of blade and the transferring roller of knife, the cleaning scraper fits, and the blade direction of the cleaning scraper with it is described
The rotation direction of transferring roller is at an acute angle.
8. a kind of pole piece according to claim 1 mends lithium system, it is characterised in that: the lithium liquid supply unit includes metal
Lithium melts tank and squeezes coating head device, is connected between the lithium metal melting tank and extruding coating head device by liquid-transport pipe-line, institute
State the surface that lithium liquid is coated in the transferring roller by squeezing coating head device.
9. a kind of pole piece according to claim 1 mends lithium system, it is characterised in that: the lithium liquid cooling device includes air-cooled
Unit conveys dry cooling gas to the corresponding region of the roll surface of transfer roll coating lithium liquid；And temperature measuring unit, measure transferring roller
Coat the temperature and feedback control wind cooling unit of the corresponding region of the roll surface of lithium liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820992740.1U CN208352431U (en) | 2018-06-26 | 2018-06-26 | A kind of pole piece benefit lithium system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820992740.1U CN208352431U (en) | 2018-06-26 | 2018-06-26 | A kind of pole piece benefit lithium system |
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| Publication Number | Publication Date |
|---|---|
| CN208352431U true CN208352431U (en) | 2019-01-08 |
Family
ID=64881939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820992740.1U Active CN208352431U (en) | 2018-06-26 | 2018-06-26 | A kind of pole piece benefit lithium system |
Country Status (1)
| Country | Link |
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| CN (1) | CN208352431U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112186133A (en) * | 2019-07-05 | 2021-01-05 | 宁德时代新能源科技股份有限公司 | Device for lithium supplement of pole piece |
| CN114030929A (en) * | 2022-01-10 | 2022-02-11 | 天津中能锂业有限公司 | Pole piece strip-shaped interval pre-lithiation device |
-
2018
- 2018-06-26 CN CN201820992740.1U patent/CN208352431U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112186133A (en) * | 2019-07-05 | 2021-01-05 | 宁德时代新能源科技股份有限公司 | Device for lithium supplement of pole piece |
| CN114030929A (en) * | 2022-01-10 | 2022-02-11 | 天津中能锂业有限公司 | Pole piece strip-shaped interval pre-lithiation device |
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