CN202888313U - Device for processing anode strip of lithium ion battery - Google Patents
Device for processing anode strip of lithium ion battery Download PDFInfo
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- CN202888313U CN202888313U CN2012204813750U CN201220481375U CN202888313U CN 202888313 U CN202888313 U CN 202888313U CN 2012204813750 U CN2012204813750 U CN 2012204813750U CN 201220481375 U CN201220481375 U CN 201220481375U CN 202888313 U CN202888313 U CN 202888313U
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- lithium
- anode strip
- processing unit
- lithium ion
- ion battery
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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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Abstract
The utility model belongs to the field of lithium ion batteries and in particular relates to a device for processing an anode strip of a lithium ion battery. The device for processing the anode strip of the lithium ion battery comprises an unwinding device and a winding device as well as an anode strip processing device, wherein the anode strip processing device comprises a metal lithium supply device and an electrolyte processing device which sends the anode strip to the metal lithium supply device. Compared with the prior art, the device provided by the utility model can be used for processing the anode strip efficiently, quantitatively and uniformly, and the device is simple in structure, low in cost and extremely easy for realization of industrialization batch production.
Description
Technical field
The utility model belongs to the lithium ion battery field, relates in particular to a kind of lithium ion battery anode strip processing unit.
Background technology
1991, the creationary employing Carbon Materials of Sony corporation of Japan was as lithium ion battery anode material, for having brought revolutionary variation in the lithium ion battery field; Since then, the fast development of lithium-ion electric pool technology is in mobile phone, video camera, notebook computer and other in a large number utilizations above portable electronics.Lithium ion battery has plurality of advantages, high such as voltage, volume is little, quality is light, than ability height, memory-less effect, pollution-free, self discharge is little, have extended cycle life etc., is 21st century desirable movable electrical appliances power supply, electric car power supply and electricity storage station electrical storage device.
But the development of microminiaturized along with portable electric appts, long standby, to the proposition of the energy density of lithium ion battery more and more higher requirement.For existing negative material, in the initial charge process, all can form solid electrolyte film (SEI film), thereby consume a part from the lithium ion in the positive electrode, finally cause the first enclosed pasture efficient of battery core to be lower than 100%, for example the first efficient of graphite material is about 90%, and alloy anode efficient is lower first, take the silicium cathode material as example, its first the enclosed pasture efficient between 65%-85%.Therefore if can improve the at first enclosed pasture efficient of battery core, the energy density of raising battery core that can be by a relatively large margin.
Improve the first purpose of enclosed pasture efficient of battery core in order to reach, the expert is launching the research of wide model aspect the anode processing both at home and abroad, and has obtained some achievements: the high [lithium metal dispersion in the electrode of the Y of FMC Corp.; Y is high, M subfamily Fu Laiwa, J En Geer, ect; 2006] etc. with lithium metal powder, negative material and on-aqueous liquid mixed-shaped form slurry, slurry is coated on the collector, then dry slurries; Although the method can play the processing effect, the final first enclosed pasture efficient that realizes improving battery core, still the production technology of whole battery core must be finished in hothouse, and the cost of metallic lithium powder itself is higher simultaneously, and itself and anode blend difficulty are large, so production cost is higher.In addition, the high [dispersion of lithium metal in the secondary cell anode of Y; Y is high, and JL wins the Ba three generations; 2002.] etc. also metallic lithium powder is made into slurry, realize that anode mends the purpose of lithium thereby be coated on the collector electrode.It is raw material that the method has been suitable for the higher metallic lithium powder of cost equally, and configuration slurry difficulty is larger, and the Uniform Dispersion of slurry on collector electrode also is difficult to guarantee, therefore limited greatly its use on volume production.Application number is that the Japanese patent application employing of JP1996027910 covers the negative plate surface with metal lithium sheet, then reels and makes battery, and the method for then pouring into electrolyte prepares lithium ion battery; When using the method to process, during the battery core assembled formation, metal lithium sheet is easy to pierce through barrier film and causes the anode and cathode short circuit, simultaneously, owing to be difficult to prepare thinner metal lithium sheet, therefore often cause the amount of the lithium that negative plate can absorb to be far smaller than the lithium that metal lithium sheet provides, so that the problems such as lithium, cycle performance be poor appear analysing in battery core.
The utility model content
The purpose of this utility model is: for the deficiencies in the prior art, and a kind of lithium ion battery anode strip processing unit is provided, and this device can the antianode sheet be processed efficiently, quantitatively, uniformly, and this utility model is simple in structure in addition, with low cost, very easily realize industrialized mass production.
For achieving the above object, the utility model adopts following technical scheme: a kind of lithium ion battery anode strip processing unit, comprise unwinding device and wrap-up, wherein, also comprise the pole piece processing unit, described pole piece processing unit comprises that lithium metal send in the electrolyte processing device of described lithium metal for the lithium device for the lithium device with anode strip.
Described electrolyte processing device is box electrolyte processing device or jet printing type electrolyte processing device.
Described lithium metal is lithium multi-roll device, lithium band ring type device or lithium band coiled strip formula device for the lithium device.
Described unwinding device comprises the first wheel shaft and pole piece drying unit, and described anode strip is fixedly installed on described the first wheel shaft, and described pole piece drying unit is positioned at a side of described the first wheel shaft.
Described wrap-up comprises the second wheel shaft, tenslator and deviation correcting device, and described the second wheel shaft and described tenslator are arranged at respectively described deviation correcting device.
Described unwinding device, described pole piece processing unit and described wrap-up are provided with transfer roller.
Described pole piece processing unit is provided with heating system.
The beneficial effects of the utility model are: the utility model comprises unwinding device and wrap-up, wherein, also comprise the pole piece processing unit, described pole piece processing unit comprises that lithium metal send in the electrolyte processing device of described lithium metal for the lithium device for the lithium device with anode strip.This device can be efficiently, quantitatively, the antianode sheet is processed uniformly, this utility model is simple in structure in addition, and is with low cost, very easily realizes industrialized mass production.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Fig. 3 is the structural representation of the utility model embodiment 3.
Fig. 4 is the structural representation of the utility model embodiment 4.
Fig. 5 is the structural representation of the utility model embodiment 5.
Embodiment
Below in conjunction with embodiment and Figure of description, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
As shown in Figure 1, this is embodiment 1 of the present utility model, a kind of lithium ion battery anode strip processing unit, comprise unwinding device 1 and wrap-up 3, wherein, also comprise pole piece processing unit 2, pole piece processing unit 2 comprises that lithium metal send in the electrolyte processing device 21 of lithium metal for lithium device 22 for lithium device 22 with anode strip., enter lithium metal after anode strip infiltrates through electrolyte processing device 21 and do further processing for lithium device 22.
During pole piece after the anode strip that uses infiltrates as electrolyte, can not contain electrolyte processing device 21 in the pole piece processing unit 2.
Preferably, electrolyte processing device 21 is box electrolyte processing device.
Preferably, lithium metal is lithium band ring type device for lithium device 22.
Preferably, unwinding device 1 comprises the first wheel shaft 11 and pole piece drying unit 12, anode strip is fixedly installed on described the first wheel shaft 11, described pole piece drying unit 12 is positioned at a side of described the first wheel shaft 11, send in electrolyte processing device 21 after being fixed in the anode strip coiled strip process pole piece drying unit 12 on the first wheel shaft 11, the first wheel shaft 11 is drive sprocket axle or follower shaft.
Preferably, wrap-up 3 comprises the second wheel shaft 31, tenslator 32 and deviation correcting device 33, the second wheel shaft 31 and tenslator 32 are arranged at respectively deviation correcting device 33, the second wheel shaft 31 is by tenslator 32 controls, and deviation correcting device 33 is regulated the rolling material and realized the neat rolling of coiled strip in the displacement of rolling vertical direction.
Wherein, unwinding device 1, pole piece processing unit 2 and wrap-up 3 are provided with transfer roller 4, and transfer roller 4 is arranged between the first wheel shaft 11 and the second wheel shaft 31.
Preferably, pole piece processing unit 2 is provided with heating system 23.Heating system 23 is set to heater strip, and this heater strip can improve the temperature of electrolyte and lithium metal roller in the processing procedure.
The course of work of the present utility model is: the anode strip that unreels that will be fixed on the first wheel shaft 11 directly enters the box electrolyte processing device that is loaded with electrolyte through pole piece drying unit 12 post-dryings, so that electrolyte fully infiltrates diaphragm, pass afterwards a pair of lithium band that is immersed in the electrolyte by lithium band driving wheel 7 and lithium band driven pulley 8 control rotating speeds, contact force size between pole piece and the lithium band is regulated by the extruding force between lithium band driving wheel 7 and the lithium band driven pulley 8, can also regulate simultaneously the temperature of the power output adjusting electrolyte of the heater strip in the electrolyte heating system 23, be implemented under the different temperatures and process anode strip.Anode strip pass the lithium band to the time, electrolyte is joined together to form ion channel with lithium band and anode strip, and lithium band and anode strip directly are joined together to form electron channel, when lithium ion passage and electron channel are communicated with simultaneously, the electrical potential difference that itself exists between anode material and the lithium band can impel the quick ionization of lithium metal to form lithium ion, embed the anode active material granule interior by the electrolyte transmission afterwards, finally reach the purpose of fast processing.Anode strip after the processing enters wrap-up 3 at last, and under the acting in conjunction of tenslator 32 and deviation correcting device 33, the anode strip coiled strip rolling after the processing is on the second wheel shaft 31.
As shown in Figure 2, this is embodiment 2 of the present utility model, as different from Example 1: present embodiment does not arrange pole piece drying unit 12, what operating procedure was different is: the anode strip that unreels that will be fixed on the first wheel shaft 11 directly enters the box electrolyte processing device that is loaded with electrolyte through behind the transfer roller 4, so that electrolyte passes box electrolyte processing device after fully infiltrating pole piece.
Other structure is identical with embodiment 1, repeats no more here.
As shown in Figure 3, this is embodiment 3 of the present utility model, as different from Example 2: present embodiment changes box electrolyte processing device the jet printing type electrolyte processing device into and lithium metal is set to lithium band coiled strip formula device for lithium device 22, what operating procedure was different is: the anode strip that unreels that will be fixed on the first wheel shaft 11 passes between a pair of electrolyte spray gun 9 through behind the transfer roller 4, electrolyte spray gun 9 is even, quantitative in crossing process is sprayed at electrolyte on the pole piece surface, so that pole piece is fully infiltrated by electrolyte.Pole piece enters the anode strip processing unit that is comprised of a pair of unwinding and rewinding lithium band system afterwards, in this processing unit, being fixed in the lithium band film volume that the lithium band unreels on the support 10 gets back in the lithium band winding system through wheel shaft, under the acting in conjunction of lithium coiling tape tension control device 13 and lithium band deviation correcting device 14, lithium band film volume winding is on lithium band winding wheel 15.When anode strip passes by this lithium band unwinding and rewinding system, keep between the three being synchronized with the movement, and the contact force between the three can be regulated by the extruding force between the lithium band tape transport pair roller.The anode strip processing procedure is: when anode strip pass the lithium band to the time, the electrolyte that is sprayed at the pole piece surface is joined together to form ion channel with lithium band and anode strip, and lithium band and anode strip directly are joined together to form electron channel, when lithium ion passage and electron channel are communicated with simultaneously, the electrical potential difference that itself exists between anode material and the lithium band can impel the quick ionization of lithium metal to form lithium ion, embed the anode active material granule interior by the electrolyte transmission afterwards, finally reach the purpose of fast processing.
Other structure is identical with embodiment 2, repeats no more here.
As shown in Figure 4, this is embodiment 4 of the present utility model, as different from Example 1: present embodiment is set to the lithium multi-roll device with lithium metal for lithium device 22, and heating system 23 is not set, what operating procedure was different is: the anode strip that unreels that will be fixed on the first wheel shaft 11 passes through pole piece drying unit 12 post-dryings, enters in the pole piece processing unit 2 through transfer roller 4 again.Pole piece at first fully infiltrates in the electrolyte processing device 21 of splendid attire electrolyte, afterwards by around the form of rolling tape transport on lithium metal roller 16, in the tape transport process, electrolyte is joined together to form ion channel with lithium metal roller 16 and anode strip, and lithium metal roller 16 and anode strip directly are joined together to form electron channel, when lithium ion passage and electron channel are communicated with simultaneously, the electrical potential difference that itself exists between anode material and the lithium metal roller 16 can impel the quick ionization of lithium metal to form lithium ion, embed the anode active material granule interior by the electrolyte transmission afterwards, finally reach the purpose of fast processing.
Other structure is identical with embodiment 1, repeats no more here.
As shown in Figure 5, this is embodiment 5 of the present utility model, and as different from Example 4: present embodiment does not arrange pole piece drying unit 12, but is provided with heating system 23, heating system 23 heats for electrolyte and lithium metal roller 16, makes it remain on uniform temperature.
Other structure is identical with embodiment 4, repeats no more here.
Relative prior art, 1), the utility model lithium ion battery anode strip processing unit the utility model has following advantage at least:, can very simply regulate lithium concentration in ambient temperature that rewinding tension force, coiled strip places, the electrolyte, realize controlling lithium ion from the transmission speed of lithium metal roller 16 anode active material particle inside; By the time between control rewinding and the uncoiling, control lithium ion from the transmission time of lithium metal roller 16 anode active material particle inside, the final purpose that realizes control processing total amount; 2), the utility model lithium ion battery anode strip processing unit, employed lithium is the lithium band, and is with low cost; Only need unwinding winding in the processing procedure, technique is very simple; Therefore very easily realize industrialized mass production.
The according to the above description announcement of book and instruction, the utility model those skilled in the art can also change and revise above-mentioned execution mode.Therefore, the utility model is not limited to above-mentioned embodiment, and any apparent improvement, replacement or modification that every those skilled in the art have done on basis of the present utility model all belong to protection range of the present utility model.In addition, although used some specific terms in this specification, these terms do not consist of any restriction to the utility model just for convenience of description.
Claims (7)
1. lithium ion battery anode strip processing unit, comprise unwinding device (1) and wrap-up (3), it is characterized in that: also comprise pole piece processing unit (2), described pole piece processing unit (2) comprises that lithium metal send in the electrolyte processing device (21) of described lithium metal for lithium device (22) for lithium device (22) with anode strip.
2. lithium ion battery anode strip processing unit according to claim 1, it is characterized in that: described electrolyte processing device (21) is box electrolyte processing device or jet printing type electrolyte processing device.
3. lithium ion battery anode strip processing unit according to claim 1 is characterized in that: described lithium metal is lithium multi-roll device, lithium band ring type device or lithium band coiled strip formula device for lithium device (22).
4. lithium ion battery anode strip processing unit according to claim 1, it is characterized in that: described unwinding device (1) comprises the first wheel shaft (11) and pole piece drying unit (12), described anode strip is fixedly installed on described the first wheel shaft (11), and described pole piece drying unit (12) is positioned at a side of described the first wheel shaft (11).
5. lithium ion battery anode strip processing unit according to claim 1, it is characterized in that: described wrap-up (3) comprises the second wheel shaft (31), tenslator (32) and deviation correcting device (33), and described the second wheel shaft (31) and described tenslator (32) are arranged at respectively described deviation correcting device (33).
6. lithium ion battery anode strip processing unit according to claim 1, it is characterized in that: described unwinding device (1), described pole piece processing unit (2) and described wrap-up (3) are provided with transfer roller (4).
7. lithium ion battery anode strip processing unit according to claim 1, it is characterized in that: described pole piece processing unit (2) is provided with heating system (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204813750U CN202888313U (en) | 2012-09-20 | 2012-09-20 | Device for processing anode strip of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204813750U CN202888313U (en) | 2012-09-20 | 2012-09-20 | Device for processing anode strip of lithium ion battery |
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| Publication Number | Publication Date |
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| CN202888313U true CN202888313U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012204813750U Expired - Lifetime CN202888313U (en) | 2012-09-20 | 2012-09-20 | Device for processing anode strip of lithium ion battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594679A (en) * | 2013-11-15 | 2014-02-19 | 东莞新能源科技有限公司 | Device and technology for preparing lithium-enriched anode of lithium ion battery |
| CN105202882A (en) * | 2014-06-13 | 2015-12-30 | 宁德时代新能源科技有限公司 | Pole piece drying device |
| CN105895962A (en) * | 2016-05-25 | 2016-08-24 | 成都国珈星际固态锂电科技有限公司 | Preparation apparatus and preparation method for gel polymer lithium ion battery |
| CN107863491A (en) * | 2017-11-03 | 2018-03-30 | 邢台海裕锂能电池设备有限公司 | A kind of online shaping equipment of electrodes of lithium-ion batteries |
| WO2020108503A1 (en) * | 2018-11-27 | 2020-06-04 | 北京卫蓝新能源科技有限公司 | System for preparing electrode having high cycle efficiency, method for preparing electrode having high cycle efficiency, and application thereof |
-
2012
- 2012-09-20 CN CN2012204813750U patent/CN202888313U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594679A (en) * | 2013-11-15 | 2014-02-19 | 东莞新能源科技有限公司 | Device and technology for preparing lithium-enriched anode of lithium ion battery |
| CN103594679B (en) * | 2013-11-15 | 2017-11-10 | 东莞新能源科技有限公司 | A kind of preparation facilities and technique of lithium ion battery richness lithium anode |
| CN105202882A (en) * | 2014-06-13 | 2015-12-30 | 宁德时代新能源科技有限公司 | Pole piece drying device |
| CN105202882B (en) * | 2014-06-13 | 2017-06-13 | 宁德时代新能源科技股份有限公司 | pole piece drying device |
| CN105895962A (en) * | 2016-05-25 | 2016-08-24 | 成都国珈星际固态锂电科技有限公司 | Preparation apparatus and preparation method for gel polymer lithium ion battery |
| CN107863491A (en) * | 2017-11-03 | 2018-03-30 | 邢台海裕锂能电池设备有限公司 | A kind of online shaping equipment of electrodes of lithium-ion batteries |
| WO2020108503A1 (en) * | 2018-11-27 | 2020-06-04 | 北京卫蓝新能源科技有限公司 | System for preparing electrode having high cycle efficiency, method for preparing electrode having high cycle efficiency, and application thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |