CN221230378U - Equipment for circularly preparing lithium-removing cathode material by electrolyte - Google Patents
Equipment for circularly preparing lithium-removing cathode material by electrolyte Download PDFInfo
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- CN221230378U CN221230378U CN202323004593.2U CN202323004593U CN221230378U CN 221230378 U CN221230378 U CN 221230378U CN 202323004593 U CN202323004593 U CN 202323004593U CN 221230378 U CN221230378 U CN 221230378U
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- lithium
- electrolyte
- cathode
- mixing device
- material mixing
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 90
- 239000010406 cathode material Substances 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 85
- 238000002156 mixing Methods 0.000 claims abstract description 49
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- 238000000926 separation method Methods 0.000 claims abstract description 32
- 238000004062 sedimentation Methods 0.000 claims abstract description 27
- 239000006257 cathode slurry Substances 0.000 claims abstract description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 54
- 229910052744 lithium Inorganic materials 0.000 claims description 54
- 239000007774 positive electrode material Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 9
- 229910001416 lithium ion Inorganic materials 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000011267 electrode slurry Substances 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract 1
- 239000010405 anode material Substances 0.000 description 7
- 239000012066 reaction slurry Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000006256 anode slurry Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002001 electrolyte material Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- BSWGGJHLVUUXTL-UHFFFAOYSA-N silver zinc Chemical compound [Zn].[Ag] BSWGGJHLVUUXTL-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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 discloses equipment for circularly preparing a lithium-removing cathode material by electrolyte, wherein the electrolyte and the cathode material are respectively placed in two device containers, the electrolyte is mainly transported during transportation, firstly, the electrolyte in the electrolyte container enters a material mixing device containing the cathode material to be uniformly mixed, then the cathode slurry enters a charging lithium-removing reaction device to carry out lithium-removing reaction, the cathode slurry can circularly flow in the material mixing device and the charging lithium-removing reaction device until the cathode slurry is prepared into the lithium-removing slurry meeting the design requirement, finally, the lithium-removing slurry flows into a stepped lithium-removing material sedimentation separation device, and after static sedimentation, the lower layer is the lithium-removing cathode material meeting the design requirement, and the upper layer electrolyte can flow back into the electrolyte container. The utility model solves the problem of transportation loss caused by high viscosity of the electrode slurry, can improve the utilization rate of the electrolyte, and simultaneously, each working unit is independent, so that the lithium-removing cathode material can be prepared efficiently and continuously.
Description
Technical Field
The utility model relates to the technical field of lithium battery production, in particular to equipment for circularly preparing a lithium-removing cathode material by using electrolyte.
Background
In recent years, with the wide application and market demands of products such as electric automobiles, energy storage batteries, 3C power supplies and the like, the lithium ion batteries have been unprecedented developed, compared with the traditional primary batteries, commercial lithium ion batteries such as zinc-silver batteries, thermal batteries and lithium fluorocarbon batteries can have good energy density and multiplying power performance, but the commercial lithium ion batteries are stored and used after being charged, so that the problems of large self-discharge and short storage life exist, and a large amount of lithium-removing anode materials are urgently needed to be prepared to improve the storage life of lithium ions; at present, two types of existing technologies exist, namely, a lithium-removing positive electrode material is prepared in a battery, the battery is disassembled after the preparation is finished, slurry is taken out, the lithium-removing positive electrode material is obtained through repeated drying and cleaning, and each preparation amount is small, the process is complex, and a large amount of solvent is wasted; and the other is to disassemble the fully charged battery to obtain the lithium-removed positive electrode plate, and then reassemble the positive electrode plate into the primary battery, so that the yield of the electrode plate is low, the process is complex, and the two methods cannot meet the requirement of mass production.
CN201680000982.1 redox flow battery system, pump control unit, and method for operating redox flow battery are disclosed, redox flow battery system, whose electrolyte is circulated and supplied to battery unit by pump control, terminal voltage determining unit that determines whether terminal voltage of the battery unit reaches lower limit or upper limit of predetermined voltage range, the reference flow of pump is fed back by terminal voltage. The method is used for a conventional flow battery, and the method is used for obtaining the anode material after full charge.
CN201820529808.2 is a device for preparing lithium battery delithiated anode slurry, a storage tank is used for containing reaction slurry, the reaction slurry flows through the delithiated reaction device, and then the reaction slurry is pumped back to the storage tank by a peristaltic pump, and the process is repeated until the delithiated anode material meets the requirement. The lithium removal device cannot continuously operate, each unit cannot independently work, the lithium removal period is long, the electrolyte is directly used for waste gas after lithium removal, and the use cost is high.
CN200810079539.5 is a method for preparing lithium ion battery lithium removal positive electrode material, which is characterized in that a strong oxidant and the lithium ion battery positive electrode material are mixed in deionized water, and the mixed solution is vibrated and stirred to fully perform chemical reaction to form the lithium removal positive electrode material. The method adopts a chemical method to obtain the lithium-removed anode material, but the reaction degree of the chemical method is difficult to control, the consistency of the obtained lithium-removed anode material is difficult to ensure, and the used strong oxidizer material has the problems of high risk, high cost, difficult preservation and the like.
Disclosure of utility model
The utility model aims to solve the defects of the prior art, and provides equipment for circularly preparing a lithium-removing positive electrode material by using electrolyte, which solves the problems of poor uniformity and insufficient yield of the lithium-removing positive electrode material in the prior art.
In order to achieve the above purpose, the utility model provides a device for circularly preparing a lithium-removing cathode material by using an electrolyte, which comprises an electrolyte container, a material mixing device, a charging lithium-removing reaction device and a lithium-removing material sedimentation separation device, wherein the charging lithium-removing reaction device comprises a cathode cavity connected with an external power supply, a negative plate connected with the external power supply and a lithium battery diaphragm arranged between the cathode cavity and the negative plate; the material mixing device is connected with the electrolyte container through a pipeline, the electrolyte container is connected with an electrolyte outlet pipeline of the lithium removal material sedimentation separation device through a pipeline, and the pipelines are provided with pumps, one-way valves and flow meters.
The electrolyte inlet on the material mixing device is provided with a first filter screen, and the electrolyte outlet on the lithium removal material sedimentation separation device is provided with a second filter screen.
The positive electrode cavity and the negative electrode plate further comprise a current collecting column, the current collecting column penetrates through the insulating protective shell to be connected with the surface of the inner cavity of the charging lithium removing reaction device, and the upper end of the current collecting column is connected with an external power supply.
The side surface of the electrolyte container is provided with a feed port and a sealing cover plate, and electrolyte is replaced and replenished through the feed port; the upper end of the electrolyte container is connected with the material mixing device, and electrolyte is filled into the material mixing device; the lower end of the electrolyte container is connected with a precipitation separation device of the lithium removal material, so that the electrolyte separated by precipitation is refluxed into the electrolyte container.
The material mixing device also comprises a stirring device, the stirring rod is arranged in the material mixing device, the motor is arranged outside the material mixing device, and the material mixing device is sealed through a sealing cover plate.
The lithium removal material sedimentation separation device is internally provided with a stepped sedimentation layer, so that the separation and collection of the lithium removal positive electrode material and the electrolyte are facilitated.
Compared with the prior art, the lithium-removing material mixing device has the beneficial effects that the material mixing device is used for mixing the positive electrode material and the electrolyte in the equipment for preparing the lithium-removing positive electrode material, the reaction slurry flows through the charging lithium-removing reaction device and flows back to the material mixing device, the reaction slurry is circularly reciprocated in such a way, the positive electrode slurry is prepared into the lithium-removing positive electrode slurry meeting the requirements by the charging lithium-removing reaction device, the lithium-removing positive electrode slurry flows into the lithium-removing material sedimentation separation device, the redundant electrolyte flows back to the electrolyte container and is mixed with the next batch of positive electrode material, and finally the lithium-removing positive electrode material is taken out, cleaned and dried to obtain the lithium-removing positive electrode powder, and each process can work independently and has high production efficiency.
Drawings
Fig. 1 is a schematic diagram of the structure of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the utility model, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present utility model can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 1, the device for circularly preparing the lithium-removing cathode material by using the electrolyte comprises an electrolyte container 5, a material mixing device 4, a charging lithium-removing reaction device 1 and a lithium-removing material sedimentation separation device 6, wherein the charging lithium-removing reaction device 1 comprises a cathode cavity connected with an external power supply, a negative plate 3 connected with the external power supply and a lithium battery diaphragm 2 arranged between the cathode cavity and the negative plate, lithium ions in the material in the cathode cavity are removed and are inserted into the negative plate through the diaphragm in the charging process of the lithium-removing device, so that the cathode material becomes the charged lithium-removing material, a feeding pipeline 13 connected with the material mixing device 4, a circulating pipeline 12 connected with the material mixing device 4 and returning the cathode slurry to the material mixing device 4 and a discharging pipeline 11 connected with the lithium-removing material sedimentation separation device 6 are arranged on the cathode cavity of the charging lithium-removing reaction device 1; the material mixing device 4 is connected with the electrolyte container 5 through a pipeline, the electrolyte container 5 is connected with an electrolyte outlet pipeline of the lithium removal material sedimentation separation device 6 through a pipeline, and the pipelines are provided with pumps, one-way valves and flow meters.
The electrolyte inlet on the material mixing device 4 is provided with a first filter screen 43, and the electrolyte outlet on the lithium removal material sedimentation separation device 6 is provided with a second filter screen 10.
The positive electrode cavity and the negative electrode plate further comprise a current collecting column, the current collecting column penetrates through the insulating protective shell to be connected with the surface of the inner cavity of the charging lithium removing reaction device, and the upper end of the current collecting column is connected with an external power supply.
The side surface of the electrolyte container 5 is provided with a feed port and a sealing cover plate, and electrolyte is replaced and supplemented through the feed port; the upper end of the electrolyte container is connected with the material mixing device 4, and electrolyte is filled into the material mixing device; the lower end of the electrolyte container is connected with a precipitation separation device 6 of the lithium removal material, so that the electrolyte separated by precipitation is refluxed into the electrolyte container 5.
The material mixing device 4 further comprises a stirring device, the stirring rod is arranged in the material mixing device, the motor is arranged outside the material mixing device, and the stirring rod is sealed through a sealing cover plate.
The lithium removal material sedimentation separation device 6 is internally provided with a stepped sedimentation layer 63, so that the separation and collection of the lithium removal positive electrode material and the electrolyte are facilitated.
Specifically, the device for circularly preparing the lithium-removing cathode material by using the electrolyte comprises a charging and lithium-removing reaction device 1, a discharging pipeline 11, a circulating pipeline 12 and a feeding pipeline 13, wherein the discharging pipeline 11 enters a lithium-removing material sedimentation separation device 6, and the circulating pipeline 12 enters a material mixing device 4. The material mixing device 4 comprises an electrolyte inlet line 41 and a slurry outlet line 42. The electrolyte container 5 comprises an electrolyte inlet line 51 into the material mixing device 4 and an electrolyte outlet line 52 of the delithiated material sedimentation separation device 6. The precipitation separation device 6 of the lithium removing material comprises a pipeline 62 entering the electrolyte container 5 and a discharging pipeline 61 of the charging lithium removing reaction device 1. The flow meter 7 detects the flow rate of each pipe. The valve 8 controls the material to enter and exit in different devices, so as to meet the working condition requirement. And the second filter screen 10 is an electrolyte-resistant steel screen, and filters the particles of the positive electrode material to prevent the positive electrode material from entering the electrolyte container 5.
In the embodiment, the electrolyte, the anode material, the reaction cavity and the separation area can work independently, and the lithium-free anode material can be prepared in a circulating way without stopping. Electrolyte container, contain feed inlet and sealed apron, with material mixing arrangement links to each other, contains feed inlet and agitator, can stir electrolyte and positive electrode material and mix into thick liquids, the lower extreme with the lithium removal material subsides separator and links to each other, the electrolyte that subsides the separation out flows back to in the electrolyte container again, lithium removal material subsides separator, the right side with charging takes off lithium reaction unit and links to each other, the left side with the electrolyte container links to each other. The charging lithium removal reaction device comprises a positive electrode cavity connected with an external power supply, a negative plate connected with the external power supply and a lithium battery diaphragm, and is connected with the material mixing device to form an independent flow loop.
Working principle: injecting electrolyte for lithium removal reaction into an electrolyte container 5, adding a proper amount of positive electrode powder for lithium removal reaction into a material mixing device 4, opening a valve between the electrolyte container 5 and the material mixing device 4, closing the valve between the electrolyte container 5 and the material mixing device 4 after a proper amount of electrolyte is injected into the material mixing device 4, opening a stirrer to mix the electrolyte and the positive electrode powder, and opening valves of a feeding pipeline and a circulating pipeline of the material mixing device 4 and the charging lithium removal reaction device 1 after the electrolyte and the positive electrode powder are uniformly mixed. The positive electrode of the charging and lithium removing reaction device 1 is connected with the positive electrode of an external power supply, and the negative electrode plate 3 of the charging and lithium removing reaction device 1 is connected with the negative electrode of the external power supply. The positive electrode slurry undergoes a delithiation reaction in the charged delithiation reaction device 1, and the delithiated lithium ions are deposited on the negative electrode plate 3 through the lithium battery diaphragm 2. The positive electrode slurry continuously and circularly flows between the charging lithium removal reaction device 1 and the material mixing device 4 through a pipeline until the reaction reaches the lithium removal state positive electrode material meeting the requirement, then closing a valve between the material mixing device 4 and the charging lithium removal reaction device 1, opening a valve between the charging lithium removal reaction device 1 and the lithium removal material sedimentation separation device 6, after the lithium removal state positive electrode slurry after the reaction is introduced into the lithium removal material sedimentation separation device 6, closing the valve between the charging lithium removal reaction device 1 and the lithium removal material sedimentation separation device 6, after the lithium removal material is separated from the electrolyte, opening the valve between the lithium removal material sedimentation separation device 6 and the electrolyte container 5, introducing the upper electrolyte into the electrolyte container 5 to be used for the next batch of lithium removal reaction, taking out the lithium removal material, and finally preparing the lithium removal state positive electrode material by washing and drying. When the lithium removal material sedimentation separation device 6 works, the equipment does not affect the work of other devices, can continuously produce, and greatly improves the production efficiency of the lithium removal positive electrode material.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. The equipment for circularly preparing the lithium-removing cathode material by using the electrolyte is characterized by comprising an electrolyte container (5), a material mixing device (4), a charging lithium-removing reaction device (1) and a lithium-removing material sedimentation separation device (6), wherein the charging lithium-removing reaction device (1) comprises a cathode cavity connected with an external power supply, a negative plate (3) connected with the external power supply and a lithium battery diaphragm (2) arranged between the cathode cavity and the negative plate, lithium ions in the material in the cathode cavity are removed and are inserted into the negative plate through the diaphragm in the charging process of the lithium-removing device, so that the cathode material becomes the charged lithium-removing material, and a feeding pipeline (13) connected with the material mixing device (4), a circulating pipeline (12) connected with the material mixing device (4) and used for returning the cathode slurry to the material mixing device (4) and a discharging pipeline (11) connected with the lithium-removing material sedimentation separation device (6) are arranged on the cathode cavity of the charging lithium-removing reaction device (1); the material mixing device (4) is connected with the electrolyte container (5) through a pipeline, the electrolyte container (5) is connected with an electrolyte outlet pipeline of the lithium removal material sedimentation separation device (6) through a pipeline, and the pump, the one-way valve and the flowmeter are arranged on each pipeline.
2. The equipment for preparing the lithium-removing cathode material by circulating the electrolyte according to claim 1, wherein a first filter screen (43) is arranged at an electrolyte inlet on the material mixing device (4), and a second filter screen (10) is arranged at an electrolyte outlet on the lithium-removing material sedimentation separation device (6).
3. The apparatus for preparing a delithiated positive electrode material by circulating an electrolyte according to claim 1, wherein the positive electrode cavity and the negative electrode plate further comprise a current collecting column, the current collecting column penetrates through the insulating protective shell to be connected with the surface of the inner cavity of the charging delithiated reaction device, and the upper end of the current collecting column is connected with an external power supply.
4. The equipment for circularly preparing the lithium-free cathode material by using the electrolyte according to claim 1, wherein a feed port and a sealing cover plate are arranged on the side surface of the electrolyte container (5), and the electrolyte is replaced and supplemented through the feed port; the upper end of the electrolyte container is connected with a material mixing device (4), and electrolyte is filled into the material mixing device; the lower end of the electrolyte container is connected with a precipitation separation device (6) of the lithium removal material, so that the electrolyte separated by precipitation is refluxed into the electrolyte container (5).
5. The apparatus for preparing a delithiated cathode material according to claim 1, characterized in that the material mixing device (4) further comprises a stirring device, the stirring rod is arranged in the material mixing device, the motor is arranged outside the material mixing device and is sealed by a sealing cover plate.
6. The equipment for circularly preparing the lithium-removed cathode material by using the electrolyte according to claim 1, wherein a step sedimentation layer (63) is arranged in the lithium-removed material sedimentation separation device (6) so as to facilitate separation and collection of the lithium-removed cathode material and the electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323004593.2U CN221230378U (en) | 2023-11-07 | 2023-11-07 | Equipment for circularly preparing lithium-removing cathode material by electrolyte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323004593.2U CN221230378U (en) | 2023-11-07 | 2023-11-07 | Equipment for circularly preparing lithium-removing cathode material by electrolyte |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221230378U true CN221230378U (en) | 2024-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323004593.2U Active CN221230378U (en) | 2023-11-07 | 2023-11-07 | Equipment for circularly preparing lithium-removing cathode material by electrolyte |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221230378U (en) |
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2023
- 2023-11-07 CN CN202323004593.2U patent/CN221230378U/en active Active
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