CN208127307U - A kind of electrodes of lithium-ion batteries that surface powder particles are evenly distributed - Google Patents
A kind of electrodes of lithium-ion batteries that surface powder particles are evenly distributed Download PDFInfo
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- CN208127307U CN208127307U CN201820049767.7U CN201820049767U CN208127307U CN 208127307 U CN208127307 U CN 208127307U CN 201820049767 U CN201820049767 U CN 201820049767U CN 208127307 U CN208127307 U CN 208127307U
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- screw
- powder particles
- lithium
- electrodes
- ion batteries
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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 discloses a kind of electrodes of lithium-ion batteries that surface powder particles are evenly distributed, it is characterized in that, including battery pole piece main body (1), the upper and lower surface of the battery pole piece main body (1) is respectively arranged with the powder particles layer (2) that powder particles are evenly distributed.A kind of electrodes of lithium-ion batteries that surface powder particles are evenly distributed disclosed in utility model, its surface powder particles is evenly distributed, it can guarantee the uniformity consistency of powder particles distribution, improve the overall performance of the battery finally prepared, the market application prospect for being conducive to improve cell production companies product, is of great practical significance.
Description
Technical field
The utility model relates to battery technology fields, more particularly to a kind of lithium ion that surface powder particles are evenly distributed
Battery pole piece.
Background technique
Currently, lithium ion battery have many advantages, such as specific energy is high, be recycled often, storage time it is long, not only just
It takes such as mobile phone, DV and laptop computer on formula electronic equipment to be used widely, and is widely used in electricity
In terms of the large and medium-sized electrical equipment such as electrical automobile, electric bicycle and electric tool, therefore to the performance requirement of lithium ion battery
It is higher and higher.
For the pole piece of lithium ion battery, if the powder particles distribution of pole piece is uneven, it is meant that lithium ion exists
Pole piece deintercalation reaction is uneven, heavy then lead to that internal short-circuit occurs when analysing lithium, causes safety accident, gently the then circulation of battery
Performance decline.Therefore the uniformity of the powder particles distribution of pole piece is most important.
The powder particles distributing homogeneity of pole piece, depends greatly on the dispersibility of slurry.Slurry be by
Active material, conductive agent and bonding agent mix, and a variety of materials poor dispersion easily occur, and mixing is uneven, and conductive agent is reunited etc.
Phenomenon, it is poor so as to cause pole piece particle distribution uniformity.In pole piece manufacturing process, the dispersion of powder is mainly determined by slurry process
It is fixed.The spy that the dispersibility needs most important for performance of lithium ion battery and slurry manufacturing process of slurry are paid close attention to
Property.
Currently, slurry is mainly or using universal traditional big tank slurry in lithium ion battery production process
Mode.The big main impeller shearing dispersion of tank slurry, and the region remote from impeller, the blind area for easily forming dispersion (are not related to area
Domain), uneven so as to cause mixing dispersion, particle agglomeration or glue disperse phenomena such as uneven.
Therefore, at present there is an urgent need to develop a kind of battery pole piece out, surface powder particles are evenly distributed, it is ensured that powder
Expect the uniformity consistency of distribution of particles, improves the overall performance of the battery finally prepared.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of lithium ion cell electrodes that surface powder particles are evenly distributed
Piece, surface powder particles are evenly distributed, it is ensured that the uniformity consistency of powder particles distribution improves the battery finally prepared
Overall performance, be conducive to improve cell production companies product market application prospect, be of great practical significance.
For this purpose, the utility model provides a kind of electrodes of lithium-ion batteries that surface powder particles are evenly distributed, including electricity
The electrodes of lithium-ion batteries that pond pole piece body surfaces powder particles are evenly distributed, the battery pole piece body surfaces powder particles point
The upper and lower surface of the uniform electrodes of lithium-ion batteries of cloth is respectively arranged with the powder particles layer surface powder that powder particles are evenly distributed
Expect the electrodes of lithium-ion batteries of even particle distribution.
Wherein, the electrodes of lithium-ion batteries that the powder particles layer surface powder particles are evenly distributed is to use contained each group
The powder particles layer formed after dividing finely dispersed slurry to be dried.
Wherein, the contained finely dispersed slurry of each component is prepared especially by double screw extruder.
Wherein, the double screw extruder includes the extruder shell of hollow sealing, includes one in the extruder shell
The electrodes of lithium-ion batteries surface powder particles being evenly distributed to the screw body surface powder particles of cross direction profiles are evenly distributed
Electrodes of lithium-ion batteries, the electrodes of lithium-ion batteries surface powder particles that every screw body surface powder particles are evenly distributed
The electrodes of lithium-ion batteries being evenly distributed includes the electrodes of lithium-ion batteries that screw drive shaft surface powder particles are evenly distributed, institute
It states and is fixed with a screw support axis table outside the electrodes of lithium-ion batteries that screw drive shaft surface powder particles are evenly distributed
The electrodes of lithium-ion batteries of flour material even particle distribution, the lithium ion that screw support axis surface powder particles are evenly distributed
Multiple screw elements are intervally distributed on battery pole piece.
Wherein, the first screw element, the second screw element, third screw rod member are intervally distributed on the screw support axis
Part, the 4th screw element, the 5th screw element and the 6th screw element.
Wherein, screw drive shaft surface powder particles are evenly distributed electrodes of lithium-ion batteries and outer
Power output shaft is connected.
By the above technical solution provided by the utility model as it can be seen that compared with prior art, the utility model provides
A kind of electrodes of lithium-ion batteries that surface powder particles are evenly distributed, surface powder particles are evenly distributed, it is ensured that powder
The uniformity consistency of distribution of particles improves the overall performance of the battery finally prepared, is conducive to improve cell production companies product
Market application prospect, be of great practical significance.
Detailed description of the invention
Fig. 1 is a kind of structure schematic diagram of electrodes of lithium-ion batteries provided by the utility model；
Fig. 2 is the concrete operating principle schematic diagram for preparing a kind of electrodes of lithium-ion batteries provided by the utility model；
Fig. 3 is the structural representation letter for preparing used screw rod when a kind of electrodes of lithium-ion batteries provided by the utility model
Figure；
In figure：1 is battery pole piece main body, and 2 be powder particles layer；
10 be screw body, and 3 be screw drive shaft, and 4 be screw support axis, and 51 be the first screw element, and 52 be the second spiral shell
Rod element, 53 be third screw element, and 54 be the 4th screw element, and 55 be the 5th screw element, and 56 be the 6th screw element.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and embodiment
The utility model is described in further detail.
Referring to Fig. 1 to Fig. 3, the utility model provides a kind of electrodes of lithium-ion batteries, including battery pole piece main body 1, institute
The upper and lower surface for stating battery pole piece main body 1 is respectively arranged with the powder particles layer 2 that powder particles are evenly distributed.
In the present invention, in specific implementation, the powder particles layer 2 is to use the finely dispersed slurry of contained each component
The powder particles layer that material is formed after being dried.
In specific implementation, the contained finely dispersed slurry of each component is made especially by double screw extruder
It is standby.
In specific implementation, the double screw extruder includes the extruder shell of hollow sealing, in the extruder shell
Screw body 10 including a pair of of cross direction profiles, every screw body 10 include screw drive shaft 3, outside the screw drive shaft 3
Portion is fixed with a screw support axis 4, multiple screw elements is intervally distributed on the screw support axis 4, for example, specifically may be used
Think variform first screw element 51 shown in Fig. 3, the second screw element 52, third screw element 53, the 4th screw rod
Element 54, the 5th screw element 55 and the 6th screw element 56.
In specific implementation, the power output shaft of the screw drive shaft 3 and outer is connected, and starts in outside
Under the driving of machine, the rotation of 360 deg is carried out in the longitudinal direction.
It should be noted that shown in Figure 2, for the utility model, raw material, which enter double screw extruder, to be mixed
Splitting or integrating dissipates, diluted process, the slurry of output favorable dispersibility, the pole that slurry is required using coating, drying output technique
Piece.The raising of slurry dispersibility is more advantageous to the coating high-quality pole piece of output.
In the present invention, it should be noted that double screw extruder internal structure is a pair by a variety of different types
Screw element composition configuration constitute.The configuration can be freely combined according to process ruggedness, met material and mixed splitting or integrating
Dissipate and dilute the process of stirring.The inner space of double screw extruder is narrow, between screw rod and screw rod, the spacing of screw rod and cavity
It is close, it ensure that the distribution of shearing force between material.Meanwhile the twin-screw extrusion form of double screw extruder, so that mixed
When slurry, the adjustment of corresponding dispersion intensity can be carried out according to different material, is turned up not under conditions of not increasing the slurry time
With the dispersibility of material.In addition, the dispersibility of slurry is turned up, be conducive to the uniformity and pole piece material that improve coating procedure
Grain distributing homogeneity.
It should be noted that for the utility model, it can be by taking novel double screw extruder slurry technique
Mode is engaged by novel double-screw extruder and is dispersed, improved the dispersibility of slurry, keep various powders and glue evenly dispersed,
The powder particles for reinforcing pole piece are evenly distributed consistency, the final performance characteristic for improving battery.
In conclusion compared with prior art, the lithium that provided by the utility model kind of surface powder particles are evenly distributed
Ion battery pole piece, surface powder particles are evenly distributed, it is ensured that the uniformity consistency of powder particles distribution improves final
The overall performance of the battery of preparation is conducive to the market application prospect for improving cell production companies product, has great production
Practice significance.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (6)
1. a kind of electrodes of lithium-ion batteries that surface powder particles are evenly distributed, which is characterized in that including battery pole piece main body
(1), the upper and lower surface of the battery pole piece main body (1) is respectively arranged with the powder particles layer (2) that powder particles are evenly distributed.
2. electrodes of lithium-ion batteries as described in claim 1, which is characterized in that the powder particles layer (2) is contained by use
The powder particles layer that the finely dispersed slurry of each component is formed after being dried.
3. electrodes of lithium-ion batteries as claimed in claim 2, which is characterized in that the finely dispersed slurry of the contained each component
It is prepared especially by double screw extruder.
4. electrodes of lithium-ion batteries as claimed in claim 3, which is characterized in that the double screw extruder includes hollow sealing
Extruder shell, include the screw body (10) of a pair of of cross direction profiles, every screw body (10) in the extruder shell
Including screw drive shaft (3), a screw support axis (4), the screw support are fixed with outside the screw drive shaft (3)
Axis is intervally distributed with multiple screw elements on (4).
5. electrodes of lithium-ion batteries as claimed in claim 4, which is characterized in that be spaced apart on the screw support axis (4)
There are the first screw element (51), the second screw element (52), third screw element (53), the 4th screw element (54), the 5th spiral shell
Rod element (55) and the 6th screw element (56).
6. electrodes of lithium-ion batteries as claimed in claim 4, which is characterized in that the screw drive shaft (3) is started with outside
The power output shaft of machine is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820049767.7U CN208127307U (en) | 2018-01-12 | 2018-01-12 | A kind of electrodes of lithium-ion batteries that surface powder particles are evenly distributed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820049767.7U CN208127307U (en) | 2018-01-12 | 2018-01-12 | A kind of electrodes of lithium-ion batteries that surface powder particles are evenly distributed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208127307U true CN208127307U (en) | 2018-11-20 |
Family
ID=64205778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820049767.7U Active CN208127307U (en) | 2018-01-12 | 2018-01-12 | A kind of electrodes of lithium-ion batteries that surface powder particles are evenly distributed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208127307U (en) |
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2018
- 2018-01-12 CN CN201820049767.7U patent/CN208127307U/en active Active
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