CN115041050A - Lithium battery slurry manufacturing method - Google Patents
Lithium battery slurry manufacturing method Download PDFInfo
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- CN115041050A CN115041050A CN202210731377.9A CN202210731377A CN115041050A CN 115041050 A CN115041050 A CN 115041050A CN 202210731377 A CN202210731377 A CN 202210731377A CN 115041050 A CN115041050 A CN 115041050A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/53—Mixing liquids with solids using driven stirrers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/50—Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/55—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers driven by the moving material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/82—Forming a predetermined ratio of the substances to be mixed by adding a material to be mixed to a mixture in response to a detected feature, e.g. density, radioactivity, consumed power or colour
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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 invention relates to the technical field of battery production, and provides a preparation method of a lithium battery slurry, which comprises the steps of preliminarily mixing a powder material and a liquid material to form a primary mixed slurry; and (3) circularly and repeatedly conveying the initial mixed slurry between the first container and the second container, and stirring and dispersing the initial mixed slurry in each conveying process to form finished slurry. With the adoption of the arrangement, when the slurry is prepared by using the preparation method of the lithium battery slurry provided by the invention, the stirring and dispersion of all the initially mixed slurry can be realized, the probability of stirring and dispersing the caking materials is improved, the dispersion efficiency of the caking materials is improved, the time required by pulping is reduced, and the pulping efficiency is improved.
Description
Technical Field
The invention relates to the technical field of battery production, in particular to a preparation method of lithium battery slurry.
Background
In the production process of the lithium battery, various materials such as raw material powder, a solvent, a colloid and the like need to be uniformly mixed to achieve parameters such as proper proportion, viscosity and the like.
In the prior art, various raw materials are mainly put into a pulping tank, and are uniformly stirred by a stirring mechanism in the pulping tank. When the raw material powder contacts with the solvent, the raw material powder is easy to agglomerate. For the agglomerated materials, the materials can be dispersed by using a high-speed dispersion disc rotating at a high speed in the stirring tank. However, because the range of the turbulent flow area formed by the high-speed dispersion plate is small, the powder blocks outside the range of the turbulent flow area need to move to the range of the turbulent flow area to be dispersed. For a pulping tank with a large solvent, the probability that powder blocks are sheared or impacted is small, the dispersing efficiency of the powder blocks is low, and the pulping time is long and the pulping efficiency is low.
Therefore, how to solve the problem of low pulping efficiency in the prior art becomes an important technical problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention provides a preparation method of lithium battery slurry, which is used for solving the defect of low pulping efficiency in the prior art.
The invention provides a preparation method of lithium battery slurry, which comprises the following steps:
preliminarily mixing the powder material and the liquid material to form primary mixed slurry;
and (3) circularly and repeatedly conveying the initial mixed slurry between the first container and the second container, and stirring and dispersing the initial mixed slurry in each conveying process to form finished slurry.
According to the preparation method of the lithium battery slurry provided by the invention, the preliminary mixing of the powder material and the liquid material to form the preliminary mixing slurry comprises the following steps:
adding the powder material and the liquid material into the interior of the same one of the first container and the second container;
and stirring the powder material and the liquid material to preliminarily mix the powder material and the liquid material.
According to the preparation method of the lithium battery slurry provided by the invention, the preliminary mixing of the powder material and the liquid material to form the preliminary mixing slurry comprises the following steps:
adding the liquid feed to the interior of one of the first and second containers;
adding the powder material into the interior of the other of the first container and the second container;
transporting material in one of the first container and the second container into the other.
According to the preparation method of the lithium battery slurry provided by the invention, the preliminary mixing of the powder material and the liquid material to form the preliminary mixing slurry comprises the following steps:
adding the liquid materials into the interiors of the first container and the second container respectively;
agitating the liquid material in the first container and the liquid material in the second container to clean the inner walls of the first container and the second container and collect the liquid materials into the first container;
adding the powder material into the first container, or adding the powder material into the second container, and conveying the material in one of the first container and the second container into the other container.
According to the lithium battery slurry manufacturing method provided by the invention, the primarily mixed slurry is circularly and repeatedly conveyed between the first container and the second container by virtue of the bidirectional homogenizing device;
before the liquid material is collected into the first container, the method further comprises the following steps:
and (c) cyclically conveying the liquid material between the first container and the second container by using the bidirectional homogenizing device to clean the interior of the bidirectional homogenizing device.
According to the preparation method of the lithium battery slurry, the powder material comprises a first powder material and a second powder material, the first powder material comprises a binder, and the second powder material comprises an active substance and a conductive agent;
the primary mixing slurry is formed by preliminarily mixing the powder material and the liquid material, and comprises the following steps:
mixing the first powder material and the liquid material to form a glue solution;
and mixing the second powder material with the glue solution to form the primary mixed slurry.
According to the preparation method of the lithium battery slurry provided by the invention, the mixing of the first powder material and the liquid material to form the glue solution comprises the following steps:
and adding the first powder material and the liquid material into the interior of one of the first container and the second container.
According to the preparation method of the lithium battery slurry provided by the invention, the mixing of the first powder material and the liquid material to form the glue solution comprises the following steps:
adding the liquid feed to the interior of one of the first and second containers;
adding the first powder material into the interior of the other one of the first container and the second container;
transporting material in one of the first container and the second container into the other.
According to the manufacturing method of the lithium battery slurry provided by the invention, after the finished slurry is formed, the manufacturing method further comprises the following steps:
and conveying the finished slurry into a third container to store the finished slurry.
According to the manufacturing method of the lithium battery slurry provided by the invention, before the finished slurry is conveyed into the third container, the manufacturing method further comprises the following steps:
detecting the content of each component in the finished slurry;
determining the proportion of each component in the finished slurry according to the content of each component in the finished slurry;
when the proportion of each component in the finished slurry is determined to be within a target range, conveying the finished slurry into the third container;
and when the proportion of at least one component in the finished slurry is determined to be out of the target range, the finished slurry is reprocessed.
According to the manufacturing method of the lithium battery slurry provided by the invention, the reprocessing of the finished product slurry comprises the following steps:
determining defect components in the finished slurry and defect amount of the defect components, wherein the defect components are components of which the proportion in the finished slurry is lower than a target range;
adding the defect component in accordance with the defect amount to an interior of one of the first container and the second container;
mixing the defect component and the finished slurry to form a mixed slurry;
and circularly and repeatedly conveying the mixed slurry between the first container and the second container, and stirring and dispersing the mixed slurry in each conveying process to form secondary finished slurry.
In the preparation method of the lithium battery slurry, the powder material and the liquid material are firstly preliminarily mixed to form the initially mixed slurry. And then the primary mixed slurry is conveyed between the first container and the second container in a circulating reciprocating mode, stirring and dispersing operation is carried out on the primary mixed slurry in each conveying process, so that caking materials in the primary mixed slurry are dispersed, the dissolution of powder materials is promoted, the primary mixed slurry is further uniformly mixed, and the finished product slurry is formed. With the adoption of the arrangement, when the slurry is prepared by using the preparation method of the lithium battery slurry provided by the invention, the stirring and dispersion of all the initially mixed slurry can be realized, the probability of stirring and dispersing the caking materials is improved, the dispersion efficiency of the caking materials is improved, the time required by pulping is reduced, and the pulping efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flow chart of a method for manufacturing a lithium battery paste according to the present invention;
FIG. 2 is a schematic structural diagram of a pulping apparatus applicable to a lithium battery slurry manufacturing method according to the present invention;
fig. 3 is a schematic structural diagram of the bidirectional homogenizing device provided by the invention.
Reference numerals:
1: a first container; 2: a second container; 3: a bidirectional homogenizing device; 4: a housing; 5: a rotating body; 6: a first conveyance path; 7: a second conveyance path; 8: a first dispersion tray; 9: a second dispersion tray; 10: a third container; 11: a delivery pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The method for manufacturing the lithium battery paste according to the present invention will be described with reference to fig. 1 to 3.
As shown in fig. 1, a method for manufacturing a lithium battery paste according to an embodiment of the present invention includes the following steps:
Firstly, preliminarily mixing a powder material and a liquid material.
Specifically, the powder material and the liquid material may be sequentially added into the same container, and the powder material and the liquid material in the container may be stirred by a stirring mechanism in the stirring device or the container, so that the powder material and the liquid material are preliminarily mixed.
Alternatively, the powder material and the liquid material may be added to different containers, respectively, and the bidirectional homogenizing device 3 may be disposed between the two containers, and the material in one of the containers may be transferred to the other container by the bidirectional homogenizing device 3.
For example, a powder material is added into the first container 1, a liquid material is added into the second container 2, and the powder material and the liquid material are respectively stirred by a stirring device or a stirring mechanism in the first container 1 and the second container 2, so that the powder material and the liquid material are uniformly mixed.
Then the liquid material in the second container 2 is conveyed into the first container 1 by the bidirectional homogenizing device 3, so that the liquid material gradually enters the first container 1 and is gradually mixed with the powder material in the first container 1. When the liquid material in the second container 2 is conveyed into the first container 1, the powder material and the liquid material in the first container 1 can be stirred by the stirring device or the stirring mechanism in the first container 1, so that the liquid material and the powder material are gradually mixed, and the probability of agglomeration of the powder material can be reduced.
The two-way homogenizing device 3 can also be used for conveying the powder material in the first container 1 into the second container 2, so that the powder material gradually enters the second container 2 and is gradually mixed with the liquid material in the second container 2. Similarly, when the powder material in the first container 1 is conveyed into the second container 2, the powder material and the liquid material in the second container 2 can be stirred by using the stirring device or the stirring mechanism in the second container 2, so that the liquid material and the powder material are gradually mixed, and the probability of agglomeration of the powder material is reduced.
And 120, circularly and repeatedly conveying the primary mixed slurry between the first container and the second container, and stirring and dispersing the primary mixed slurry in each conveying process to form finished slurry.
The use of the two-way homogenizing device to convey the preliminary-mixed slurry between the first container 1 and the second container 2 and to perform the stirring and dispersing operation of the preliminary-mixed slurry during the conveyance ensures that the entire slurry is stirred and dispersed. The multiple and reciprocating conveying of the primary mixed slurry between the first container 1 and the second container 2 is combined, the probability that the caking materials are stirred and dispersed is improved, the caking materials in the primary mixed slurry are fully and quickly dispersed, the dissolution of powder materials is promoted, the primary mixed slurry is further uniformly mixed, and the finished product slurry is formed.
With the adoption of the arrangement, when the slurry is prepared by using the preparation method of the lithium battery slurry provided by the invention, the stirring and dispersion of all the initially mixed slurry can be realized, the probability of stirring and dispersing the caking materials is improved, the dispersion efficiency of the caking materials is improved, the time required by pulping is reduced, and the pulping efficiency is improved.
In this embodiment, the above-mentioned process of cyclically reciprocating the initially mixed slurry between the first container 1 and the second container 2 is performed by the same bidirectional homogenizing apparatus.
The above-mentioned bidirectional homogenizing apparatus 3 comprises a housing 4, a rotor 5 and a dispersion disc assembly, and referring to fig. 3, the housing 4 has a receiving chamber therein, and a first conveying passage 6 and a second conveying passage 7 are respectively provided in communication with both ends of the receiving chamber. Rotor 5 sets up in holding the chamber, is provided with the blade on rotor 5, and when rotor 5 forward rotation, can make the material carry to second transfer passage 7 from first transfer passage 6, when rotor 5 antiport, can make the material carry to first transfer passage 6 from second transfer passage 7, promptly, switches the direction of rotation of rotor 5, can switch the direction of delivery to the material.
The first conveying channel 6 and the second conveying channel 7 are respectively connected with the first container 1 and the second container 2, and as shown in fig. 2, materials can be circularly conveyed between the first container 1 and the second container 2 in a reciprocating way by controlling the rotating direction of the rotating body 5.
The dispersion impeller assembly comprises a first dispersion impeller 8 and a second dispersion impeller 9, wherein the first dispersion impeller 8 and the second dispersion impeller 9 are both in an annular structure, and are annularly arranged outside the rotor 5. The outer edge of the first dispersion disc 8 is fixedly connected with the housing 4, and the inner edge is in clearance fit with the rotor 5. The inner edge of the second dispersion disc 9 is fixedly connected with the rotor 5, and the outer edge is in clearance fit with the shell 4. A first through slot is provided at the inner edge of the first dispersion disc 8 and a second through slot is provided at the outer edge of the second dispersion disc 9. In the operating state of the bi-directional refining apparatus 3, the first dispersion disc 8 and the second dispersion disc 9 rotate relative to each other.
When the slurry to be initially mixed passes through the bidirectional homogenizing device 3 and flows to the dispersion impeller assembly, the initially mixed slurry alternately passes through the second through groove of the second dispersion impeller 9 and the first through groove of the first dispersion impeller 8, and agglomerated materials can be dispersed by the alternate disturbance of the first dispersion impeller 8 and the second dispersion impeller 9, the impact between the materials and the first dispersion impeller 8, and the impact between the materials and the second dispersion impeller 9.
In the method for manufacturing a lithium battery paste in this embodiment, after forming a finished paste, the method further includes:
step 140, the finished slurry is transported to a third container for storage of the finished slurry.
No caking materials exist in the primary mixed slurry, the powder materials are fully dissolved, and after uniform mixing, the finished slurry can be obtained.
The finished pulp is collected into the first container 1 or the second container 2, the finished pulp is conveyed into the third container 10 by the conveying pump 11, and the finished pulp is stored in the third container 10 to be pulped again by the first container 1 and the second container 2.
A stirring mechanism may be provided in the third container 10 to continuously stir the finished slurry in the third container 10 to avoid the problems of precipitation, delamination, etc. of the finished slurry.
After the finished slurry is transferred into the third vessel 10, there is inevitably a residue of the slurry on the inner walls of the first and second vessels 1 and 2.
In order to avoid the increase of the slurry residue in the first container 1 and the second container 2, in the embodiment of the invention, when the powder material and the liquid material are primarily mixed to form the primary mixed slurry, the liquid material is firstly added into the first container 1 and the second container 2, the inner walls of the first container 1 and the second container 2 are cleaned by the liquid material, and then the powder material is added.
Specifically, the liquid material required when making the slurry may be divided into two portions, which are respectively added to the first container 1 and the second container 2.
Alternatively, the liquid material required for the next slurry preparation may be added into the first container 1, and then the bidirectional homogenizing device 3 may be used to transfer part of the liquid material in the first container 1 into the second container 2, so that the first container 1 and the second container 2 have the liquid material therein.
The inner wall of the first container 1 and the inner wall of the second container 2 can be cleaned by stirring the liquid material in the first container 1 and the liquid material in the second container 2 with a stirring device or with a stirring mechanism in the first container 1 and the second container 2, respectively, and by the impact of the liquid material in the first container 1 on the inner wall of the first container 1 and the impact of the liquid material in the second container 2 on the inner wall of the second container 2.
In an alternative embodiment, the bidirectional homogenizing device 3 can be used to circulate the liquid material between the first container 1 and the second container 2 for a plurality of times, and the inside of the bidirectional homogenizing device 3 can be cleaned by the liquid material.
After the cleaning is completed, the liquid material is collected into the first container 1, and then the powder material is added to mix the powder material with the liquid material.
Specifically, the powder material may be directly added into the first container 1, or the powder material may be added into the second container 2 first, and the two-way homogenizing device 3 is used to gradually convey the powder material in the second container 2 into the first container 1, or the liquid material in the first container 1 is gradually conveyed into the second container 2, so that the powder material and the liquid material are gradually mixed and dissolved.
In the preparation of the lithium battery slurry, the used powder material comprises a binder, an active material and a conductive agent, and in an optional embodiment, the powder material can be divided into two parts, wherein one part is the binder and is called as a first powder material, and the other part is the active material and the conductive agent and is called as a second powder material.
When the powder material and the liquid material are preliminarily mixed to form the primary mixed slurry, the first powder material and the liquid material may be mixed to form a glue solution, and then the second powder material is mixed with the glue solution to form the primary mixed slurry.
When the first powder material and the liquid material are mixed, the first powder material and the liquid material can be added into the same container in sequence. Specifically, the liquid material may be added into the first container 1, and then the first powder material may be directly added into the first container 1, so that the first powder material and the liquid material are directly mixed.
Or the liquid material can be added into one container, then the first powder material is added into the other container, and then the material in one container is conveyed into the other container. Specifically, the liquid material may be added into the first container 1, the first powder material may be added into the second container 2, and then the liquid material in the first container 1 may be gradually transported into the second container 2 by the bidirectional homogenizing device 3, so that the first powder material and the liquid material may be gradually mixed and dissolved.
After the finished slurry is formed, the slurry proportioning parameters of the finished slurry also need to be detected. The slurry proportioning parameters of the finished slurry comprise the proportion of each component in the finished slurry.
Therefore, the method for manufacturing a lithium battery paste in the present embodiment further includes the following steps after forming the finished paste and before conveying the finished paste to the third container 10:
and step 131, detecting the content of each component in the finished slurry.
The content of each component of the finished product slurry can be detected by using a battery slurry content measuring instrument in the prior art.
And 132, determining the proportion of each component in the finished slurry according to the content of each component in the finished slurry.
According to the content of each component in the finished product slurry obtained by detection, the proportion of each component can be determined by calculation.
Step 133, when the proportion of each component in the finished slurry is determined to be within the target range, conveying the finished slurry into a third container;
and when the proportion of at least one component in the finished slurry is determined to be out of the target range, the finished slurry is re-processed.
And comparing the calculated proportion of each component with the target range of the corresponding component to determine whether the finished slurry is qualified.
If the proportions of the various components in the finished slurry are within the target ranges, indicating that the finished slurry is a qualified slurry, the finished slurry may be transferred into the third vessel 10.
If the proportion of at least one component in the finished slurry is out of the target range, the finished slurry is unqualified and is a defective slurry, and the finished slurry needs to be reprocessed until the finished slurry becomes a qualified slurry, and then the qualified slurry is conveyed into the third container 10.
When the calculated proportions of the various components are compared with the target ranges of the corresponding components, the components in the finished slurry, the proportions of which are lower than the target ranges, are called defect components, and the defect amount of the defect components can be determined by calculation.
After determining the defect components and the defect amount of the defect components, adding the defect components consistent with the defect amount into one container; the defect component is then mixed with the off-spec finished slurry to form a mixed slurry.
Specifically, the off-spec finished slurry may be collected into the first container 1, and the defect component may be directly added into the first container 1 to be mixed with the off-spec finished slurry. Or collecting unqualified finished product slurry into the first container 1, adding the defective component into the second container 2, and conveying the unqualified finished product slurry in the first container 1 into the second container 2 by using the bidirectional homogenizing device 3 to mix and dissolve the defective component and the unqualified finished product slurry.
Then, the mixed slurry is circularly and reciprocally conveyed between the first container 1 and the second container 2 by the bidirectional homogenizing device 3, and the mixed slurry is stirred and dispersed during each conveying process to form secondary finished slurry.
And detecting the content of each component in the secondary finished product slurry, and conveying the secondary finished product slurry into the third container 10 after the secondary finished product slurry is qualified.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A preparation method of lithium battery slurry is characterized by comprising the following steps:
preliminarily mixing the powder material and the liquid material to form primary mixed slurry;
and (3) circularly and repeatedly conveying the initial mixed slurry between the first container and the second container, and stirring and dispersing the initial mixed slurry in each conveying process to form finished slurry.
2. The method for manufacturing the lithium battery slurry according to claim 1, wherein the preliminary mixing of the powder material and the liquid material to form the preliminary mixed slurry comprises:
adding the powder material and the liquid material into the interior of the same one of the first container and the second container;
and stirring the powder material and the liquid material to preliminarily mix the powder material and the liquid material.
3. The method for manufacturing the lithium battery slurry according to claim 1, wherein the preliminary mixing of the powder material and the liquid material to form the preliminary mixed slurry comprises:
adding the liquid feed to the interior of one of the first and second containers;
adding the powder material into the interior of the other of the first container and the second container;
transporting material in one of the first container and the second container into the other.
4. The method for manufacturing the lithium battery slurry according to any one of claims 1 to 3, wherein the preliminary mixing of the powder material and the liquid material to form the preliminary mixed slurry comprises:
adding the liquid materials into the interiors of the first container and the second container respectively;
agitating the liquid material in the first container and the liquid material in the second container to clean the inner walls of the first container and the second container and collect the liquid materials into the first container;
adding the powder material into the first container, or adding the powder material into the second container, and conveying the material in one of the first container and the second container into the other container.
5. The lithium battery slurry manufacturing method according to claim 4, wherein the circulating and reciprocating conveying of the initially mixed slurry between the first container and the second container is realized by means of a bidirectional homogenizing device;
before the liquid material is collected into the first container, the method further comprises the following steps:
and (c) cyclically conveying the liquid material between the first container and the second container by using the bidirectional homogenizing device to clean the interior of the bidirectional homogenizing device.
6. The method for manufacturing a lithium battery paste according to claim 1, wherein the powder material comprises a first powder material and a second powder material, the first powder material comprises a binder, and the second powder material comprises an active material and a conductive agent;
the primary mixing slurry is formed by preliminarily mixing the powder material and the liquid material, and comprises the following steps:
mixing the first powder material and the liquid material to form a glue solution;
and mixing the second powder material with the glue solution to form the primary mixed slurry.
7. The method for manufacturing the lithium battery slurry according to claim 6, wherein the step of mixing the first powder material and the liquid material to form a glue solution comprises the following steps:
and adding the first powder material and the liquid material into one of the first container and the second container.
8. The method for manufacturing the lithium battery slurry according to claim 6, wherein the step of mixing the first powder material and the liquid material to form a glue solution comprises the following steps:
adding the liquid feed to the interior of one of the first and second containers;
adding the first powder material into the interior of the other one of the first container and the second container;
transporting material in one of the first container and the second container into the other.
9. The method for manufacturing a lithium battery paste according to claim 1, further comprising, after forming the final paste:
and conveying the finished slurry into a third container to store the finished slurry.
10. A lithium battery paste manufacturing method according to claim 9, further comprising, before the step of transferring the final paste into a third container:
detecting the content of each component in the finished slurry;
determining the proportion of each component in the finished slurry according to the content of each component in the finished slurry;
when the proportion of each component in the finished slurry is determined to be within a target range, conveying the finished slurry into the third container;
and when the proportion of at least one component in the finished slurry is determined to be out of the target range, the finished slurry is reprocessed.
11. The method of manufacturing a lithium battery paste according to claim 10, wherein the reprocessing the final paste comprises:
determining defect components in the finished slurry and defect amount of the defect components, wherein the defect components are components of which the proportion in the finished slurry is lower than a target range;
adding the defect component in accordance with the defect amount to an interior of one of the first container and the second container;
mixing the defect component and the finished slurry to form a mixed slurry;
and circularly and repeatedly conveying the mixed slurry between the first container and the second container, and stirring and dispersing the mixed slurry in each conveying process to form secondary finished slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210731377.9A CN115041050B (en) | 2022-06-24 | 2022-06-24 | Method for manufacturing lithium plasma |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210731377.9A CN115041050B (en) | 2022-06-24 | 2022-06-24 | Method for manufacturing lithium plasma |
Publications (2)
| Publication Number | Publication Date |
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| CN115041050A true CN115041050A (en) | 2022-09-13 |
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