CN212011135U - Rolling lithium supplement device - Google Patents
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- CN212011135U CN212011135U CN202020911676.7U CN202020911676U CN212011135U CN 212011135 U CN212011135 U CN 212011135U CN 202020911676 U CN202020911676 U CN 202020911676U CN 212011135 U CN212011135 U CN 212011135U
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Abstract
The application provides a roll and mend lithium device, roll and mend lithium device and include: a rolling mechanism and a supply mechanism for providing a lithium source; the rolling mechanism comprises a rolling roller and an electrostatic absorber connected with the rolling roller; the feeding mechanism is connected with the rolling roller, and under the action of the electrostatic adsorber, the surface of the rolling roller adsorbs a lithium source provided by the feeding mechanism, so that the lithium source adsorbed on the surface of the rolling roller is embedded into the pole piece when the pole piece is rolled. According to the lithium ion battery pole piece rolling and lithium supplementing method, the pole piece is rolled and lithium is supplemented, and a lithium source is directly embedded into the surface of the pole piece through the rolling roller, so that the lithium consumption of the lithium ion battery in the first charging process can be supplemented, and the battery capacity is increased; and has no special requirements on the original process and equipment environment, and does not influence the existing productivity.
Description
Technical Field
The application relates to the field of lithium ion battery manufacturing, in particular to a rolling lithium supplement device.
Background
With the development of lithium ion batteries, the energy density requirement of batteries on the market is higher and higher, the negative electrode with the highest energy density is a silicon (Si) negative electrode material which is developed and used domestically at present, the theoretical capacity of the Si material can reach 4200mAh/g, but the silicon negative electrode coating is pulverized and falls off from a current collector due to the huge volume expansion (more than 300%), and the cycle life is poor. To alleviate the volume expansion problem of Si cathodes, SiOxThe material has become the mainstream of the application in recent years, but because of SiOxThe material can form Li oxide in the process of lithium (Li) intercalation for the first time, so that a large amount of Li elements lose activity and become dead Li, the first efficiency of the battery is only about 70 percent and is only 78 percent of that of a graphite material, and the improvement of the specific energy of the power battery is seriously influenced.
To solve the problem of SiOxThe problem of low efficiency of the cathode for the first time, and Li supplement becomes a popular technology of various large research institutions and manufacturers. The currently proposed methods for lithium supplement include: the lithium is pre-compensated on the negative plate by simple primary cell design, but the methodStrict requirements are imposed on the assembly equipment and environment of the subsequent negative plate; the method of mixing the lithium supplement layer with the two layers of diaphragms is adopted, the tabs of the lithium supplement layer are connected with the tabs of the positive electrode or the negative electrode, and lithium in the active lithium layer is embedded into the positive electrode or the negative electrode to complete lithium supplement, but the method increases the difficulty of lithium ion transmission, so that the impedance between the positive electrode and the negative electrode is increased, and in addition, the manufacturing difficulty of the diaphragms and the consistency of the lithium supplement layer also can generate huge obstruction to practical application; it has also been investigated to add small amounts of Li to the lithium cobaltate/hard carbon system5FeO4The material can improve the first efficiency of the system by 10 percent and improve the cycle performance.
SUMMERY OF THE UTILITY MODEL
The technical problem that this application will be solved is that current mend lithium scheme strict and increase the pole piece battery preparation degree of difficulty to the environment requirement.
In order to solve the technical problem, the application discloses a roll and mend lithium device includes: a rolling mechanism and a supply mechanism for providing a lithium source; the rolling mechanism comprises a rolling roller and an electrostatic absorber connected with the rolling roller; the feeding mechanism is connected with the rolling roller, and under the action of the electrostatic adsorber, the surface of the rolling roller adsorbs a lithium source provided by the feeding mechanism, so that the lithium source adsorbed on the surface of the rolling roller is embedded into the pole piece when the pole piece is rolled.
Optionally, the number of the rolling rollers is two, the rolling rollers are arranged up and down and are used for rolling two surfaces of the pole piece respectively.
Optionally, the feeding mechanism comprises: the lithium source storage tank, the lithium source transmission pipeline and the lithium source box are sequentially connected, lithium source powder stored in the lithium source storage tank is transmitted to the lithium source box through the lithium source transmission pipeline, the lithium source box is connected with the surface of the rolling roller, and the number of the lithium source boxes corresponds to the number of the rolling roller.
Optionally, the lithium source case is closed, and it has scrapes the powder structure, it includes first baffle and second baffle to scrape the powder structure, first baffle is used for scraping the remaining lithium source powder in the roller surface of rolling after rolling, the second baffle is used for evenly rolling the absorptive lithium source powder thickness in roller surface.
Optionally, the gap distance between the second baffle and the rolling roller is 0-1 μm.
Optionally, the positive electrode of the electrostatic adsorber is connected with the rolling roller, and the negative electrode of the electrostatic adsorber is connected with the ground; the output voltage of the electrostatic adsorber is 8 kV-30 kV.
Optionally, the rolling lithium supplement device further comprises: and the rolling mechanism and the lithium source box are arranged in the closed box.
Optionally, the rolling lithium supplement device further comprises: and the transmission mechanism is used for transmitting the pole piece to the rolling mechanism.
Compared with the prior art, the technical scheme of the application has at least the following beneficial effects:
before rolling by the rolling roller, a lithium source is adsorbed on the surface of the rolling roller under the action of electrostatic adsorption, so that lithium can be supplemented while rolling the pole piece, and the lithium source is directly embedded into the surface of the pole piece through the rolling roller, so that the lithium consumption of the lithium ion battery in the first charging process can be supplemented, and the battery capacity can be increased; and has no special requirements for the original process and equipment environment, and does not influence the existing productivity.
The upper and lower rolling rollers can simultaneously perform double-sided rolling and lithium supplement, and through the structural design of the lithium source box, the lithium supplement amount is easy to control, and the powder lithium source can be recycled without powder pollution.
The adoption increases when rolling and mends lithium, is applicable to positive and negative pole piece simultaneously, does not need additionally to increase battery manufacturing procedure, consequently implements conveniently at the volume production line, and equipment is simple easily management and operation. In addition, the lithium source is pure metal lithium which is not chemically active, and the operation in the air can be realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, 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 schematic structural diagram of a rolling lithium supplement device according to an embodiment of the present application.
The following is a supplementary description of the drawings:
1-rolling roller; 2-an electrostatic adsorber; 3-sealing the box; 4-a lithium source holding tank; 5-lithium source transmission pipeline; 6-a lithium source box; 7-a first baffle; 8-a second baffle; 9-pole piece.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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 application.
In the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
According to the technical scheme, the dry lithium supplementing technology is adopted, the addition of the lithium source is completed in the rolling process, the flow is simple, the manufacture of subsequent pole pieces cannot be influenced, and the rolling lithium supplementing device is easy to maintain and easy to realize batch production. The technical solution of the present application will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1, the present application provides a rolling lithium supplement device, which includes: a rolling mechanism and a supply mechanism for providing a lithium source; the rolling mechanism comprises a rolling roller 1 and an electrostatic absorber 2 connected with the rolling roller 1; the supply mechanism is connected with the rolling roller 1, and under the action of the electrostatic absorber 2, the surface of the rolling roller 1 absorbs the lithium source provided by the supply mechanism, so that the lithium source absorbed on the surface of the rolling roller 1 is embedded into the pole piece 9 when the pole piece 9 is rolled.
There can be one to roll roller 1, rolls two surfaces of pole piece 9 in proper order, in order to improve and roll and mend lithium efficiency and effect, in the lithium device is mended in rolling of this embodiment, rolls roller 1 and has two, arranges from top to bottom for roll two surfaces of pole piece 9 respectively. The positive pole of the electrostatic absorber 2 is connected with the rolling roller 1, and the negative pole is connected with the ground; the output voltage of the electrostatic absorber 2 is 8kV to 30 kV. In actual practice, the output voltage of the electrostatic adsorber 2 may be adjusted to adjust the adsorption force to the lithium powder. If the output voltage is too high, the rolling roller 1 adsorbs lithium powder too strongly, which causes a lot of powder to be adsorbed on the rolling roller 1, and causes difficulty in the operation of the second baffle plate 8 to uniformly adjust the thickness of the lithium source powder adsorbed on the surface of the rolling roller 1 (which will be described in detail later); however, if the output voltage is too low, the adsorption force of the rolling roller 1 to the lithium powder is weak, and the lithium powder is easily separated from the rolling roller 1, so that the lithium supplement is not uniform or the lithium supplement capability is lost.
Further, the supply mechanism of the present embodiment may include: jar 4, lithium source transmission pipeline 5 and lithium source case 6 are acceptd to the lithium source that connects gradually, and the lithium source is acceptd the lithium source powder that jar 4 was deposited and is transmitted to lithium source case 6 through lithium source transmission pipeline 5, and lithium source case 6 is connected with rolling roller 1 surface, and the quantity of lithium source case 6 corresponds with the quantity of rolling roller 1. The lamination rolls 1 shown in fig. 1 have two, and correspondingly, the lithium source cases 6 have two.
In the rolling process, lithium source powder in the lithium source accommodating tank 4 is transmitted to the lithium source box 6 through the lithium source transmission pipeline 5; the rolling roller 1 can rotate clockwise according to the arrow direction shown in fig. 1, when the surfaces of the upper and lower rolling rollers 1 pass through the lithium source box 6, the lithium source in the lithium source box 6 is adsorbed on the surface of the rolling roller 1 due to the electrostatic action of the electrostatic adsorber 2; when the pole piece 9 passes through the upper rolling roller 1 and the lower rolling roller 1, the lithium source on the surface of the rolling roller 1 is embedded into the pole piece 9 at the same time of rolling.
Specifically, the rolling roller 1 rolls the pole piece 9 by rotating, and lithium is embedded in the pole piece 9 to complete lithium supplement. After the rolling and lithium supplement, according to the rotation direction of the rolling roller 1, the surface of the rolling roller 1 firstly passes through the first baffle 7 of the lithium source box 6 and then passes through the second baffle 8 of the lithium source box 6.
The first baffle 7 has a function of scraping off lithium source powder remaining on the surface of the rolled roller 1. Have active material to glue on the roller surface after the pole piece rolls, first baffle 7 has the function of scraping off with the residual lithium source powder on the roll 1 and the pole piece rolls the active material who glues on the roller surface after rolling, if do not scrape totally, glues on the one hand and can mix into lithium source case 6 and cause the pollution of lithium source at the active material who glues on the roller surface, and on the other hand also can influence the lithium source and adsorb once more and cause the absorption inhomogeneous. In addition, scrape whitewashed structure and can also have lithium source recovery function, so the lithium source that is scraped off by first baffle 7 can drop into the collection box.
The second barrier 8 has a function of uniformly absorbing the thickness of the lithium source by the rolling roller 1 after the rolling roller 1 absorbs the lithium source powder. The lithium source is adsorbed and can have the unsmooth uneven condition in surface on the roller 1 surface of rolling, and second baffle 8 can make roller 1 surface adsorption's lithium source even, can control the benefit lithium layer thickness through the output voltage of adjustment electrostatic adsorption ware 2 and second baffle 8 and the gap interval of roller 1, reaches the battery and mends the lithium requirement. In this embodiment, the gap distance between the second baffle 8 and the rolling roller 1 is adjustable to 0-1 μm, and the thickness of the lithium source adsorbed on the surface of the rolling roller 1 can be uniform and meet the requirement by adjusting the gap distance between the second baffle 8 and the rolling roller 1.
As shown in fig. 1, the rolling mechanism (rolling roller 1 and electrostatic adsorber 2) and lithium source tank 6 may be placed inside enclosure 3. The closed box serves to reduce the introduction of external sources of contamination and to prevent other impurities from being crushed onto the electrode surface along with the lithium source, resulting in a decrease in battery performance. In other embodiments, the enclosure may not be used.
In addition, the rolling lithium supplement device can further comprise: a transfer mechanism (not shown) for transferring the pole pieces 9 to the rolling mechanism. The transmission mechanism can adopt a conveying belt to convey the pole piece 9 to the rolling mechanism for rolling and simultaneously supplementing lithium.
The technical scheme of the application also provides a lithium supplementing method by rolling, which comprises the following steps: the rolling lithium supplement device is adopted to roll the pole piece so as to embed a lithium source into the pole piece during rolling.
The pole piece can be a positive pole piece, and the material of the positive pole piece can comprise one or a combination of more of lithium cobaltate, lithium manganate, lithium iron phosphate, lithium vanadium phosphate, ternary materials and lithium-rich manganese-based materials. In specific implementation, the positive electrode sheet can be a positive electrode sheet prepared from a mixture obtained by stirring an active material containing one or more of lithium cobaltate, lithium manganate, lithium iron phosphate, lithium vanadium phosphate, a ternary material and a lithium-rich manganese-based material, a conductive agent, a binder and a solvent.
The pole piece can also be a negative pole piece, and the material of the negative pole piece can comprise one or a combination of more of a graphite material, a silicon material, a tin material, lithium titanate and a two-dimensional material graphene material. In specific implementation, the negative electrode plate may be a negative electrode plate made of a mixture obtained by stirring an active material containing one or more of a graphite material, a silicon material, a tin material, lithium titanate, and a two-dimensional graphene material, a conductive agent, a binder, and a solvent.
The lithium source comprises a lithium composite material of one or a combination of more of stabilized lithium metal powder, lithium silicide powder and a lithium-rich compound; the lithium source powder particles have a diameter ranging from 0.01 μm to 1 μm.
In addition, the rolling pressure of the rolling roller can be set to 200 t-500 t during rolling. The rolling action is as follows: on one hand, a lithium source is pressed into the surface of the pole piece, on the other hand, the rolling work of active substances of the pole piece is completed, the thickness of the pole piece is reduced, the distance between active substance particles is reduced, the capacity of the battery is improved, and the polarization of the battery is reduced. If the compaction pressure is too low, the lithium source does not embed well into the electrode surface; if rolling pressure is too large, the extrusion degree among the material particles is larger, the porosity of the pole piece is reduced, the capability of absorbing electrolyte after liquid injection is poor, the capacity of the battery is reduced, the liquid retention capability of the battery is poor, and the cycle performance of the battery is influenced.
The following description will be made with reference to fig. 1 and specific examples to illustrate specific implementations of the rolling compaction lithium supplement method of the present application, but not limited to the following implementations.
Example 1
The rolling and lithium supplementing device comprises a rolling mechanism in the closed box 3, a feeding mechanism and a conveying mechanism. Wherein the rolling roller 1 is connected with the electrostatic adsorber 2, the negative electrode of the electrostatic adsorber 2 is connected with the ground, the positive electrode of the electrostatic adsorber 2 is connected with the rolling roller 1, and the output voltage of the electrostatic adsorber 2 is adjusted to be 30 kV.
The upper and lower rolls 1 in the rolling mechanism were connected to a lithium source box 6 in the feeding mechanism, and the lithium source box 6 was filled with stabilized lithium metal powder having a particle diameter of 0.5. mu.m. The lithium source in the lithium source storage tank 4 passes through the lithium source transport pipe 5 and enters the lithium source box 6.
When the rolling mechanism works, when the rolling roller 1 passes through the lithium source box 6, under the electrostatic action, the lithium source in the lithium source box 6 is adsorbed on the surface of the rolling roller 1, the gap distance between the second baffle plate 8 and the rolling roller 1 is 1 micrometer after passing through the second baffle plate 8, and after the excessive lithium source adsorbed on the surface of the rolling roller 1 is scraped, the lithium source with uniform thickness is adsorbed on the surface of the rolling roller 1.
The pressure of the rolling roller 1 is adjusted to be 420t, the negative pole piece 9 is driven by the transmission mechanism to be rolled by the upper and lower rolling rollers 1, and meanwhile, the lithium source on the surfaces of the upper and lower rolling rollers 1 is embedded into the negative pole piece 9.
The residual lithium source on the surface of the rolling roller 1 rotates along with the rolling roller 1, and when the residual lithium source is in contact with the first baffle 7 of the lithium source box 6, the residual lithium source is scraped and falls into the recovery box.
Example 2
The rolling and lithium supplementing device comprises a rolling mechanism in the closed box 3, a feeding mechanism and a conveying mechanism. Wherein the rolling roller 1 is connected with the electrostatic adsorber 2, the negative electrode of the electrostatic adsorber 2 is connected with the ground, the positive electrode of the electrostatic adsorber 2 is connected with the rolling roller 1, and the output voltage of the electrostatic adsorber 2 is adjusted to be 10 kV.
The upper and lower rolls 1 in the rolling mechanism were connected to a lithium source box 6 in the feeding mechanism, and the lithium source box 6 was filled with stabilized lithium metal powder having a particle diameter of 0.1. mu.m. The lithium source in the lithium source storage tank 4 passes through the lithium source transport pipe 5 and enters the lithium source box 6.
When the rolling mechanism works, when the rolling roller 1 passes through the lithium source box 6, under the electrostatic action, the lithium source in the lithium source box 6 is adsorbed on the surface of the rolling roller 1, the gap distance between the second baffle plate 8 and the rolling roller 1 is 0.3 mu m after passing through the second baffle plate 8, and after the excessive lithium source adsorbed on the surface of the rolling roller 1 is scraped, the lithium source with uniform thickness is adsorbed on the surface of the rolling roller 1.
The pressure of the rolling roller 1 is adjusted to be 230t, the negative pole piece 9 is driven by the transmission mechanism to be rolled by the upper and lower rolling rollers 1, and meanwhile, the lithium source on the surfaces of the upper and lower rolling rollers 1 is embedded into the negative pole piece 9.
The residual lithium source on the surface of the rolling roller 1 rotates along with the rolling roller 1, and when the residual lithium source is in contact with the first baffle 7 of the lithium source box 6, the residual lithium source is scraped and falls into the recovery box.
Example 3
The rolling and lithium supplementing device comprises a rolling mechanism in the closed box 3, a feeding mechanism and a conveying mechanism. Wherein the rolling roller 1 is connected with the electrostatic adsorber 2, the negative electrode of the electrostatic adsorber 2 is connected with the ground, the positive electrode of the electrostatic adsorber 2 is connected with the rolling roller 1, and the output voltage of the electrostatic adsorber 2 is adjusted to be 20 kV.
The upper and lower rolls 1 in the rolling mechanism were connected to a lithium source box 6 in the feeding mechanism, and the lithium source box 6 was filled with stabilized lithium metal powder having a particle diameter of 0.4. mu.m. The lithium source in the lithium source storage tank 4 passes through the lithium source transport pipe 5 and enters the lithium source box 6.
When the rolling mechanism works, when the rolling roller 1 passes through the lithium source box 6, under the electrostatic action, the lithium source in the lithium source box 6 is adsorbed on the surface of the rolling roller 1, the gap distance between the second baffle plate 8 and the rolling roller 1 is 0.7 mu m after passing through the second baffle plate 8, and after the excessive lithium source adsorbed on the surface of the rolling roller 1 is scraped, the lithium source with uniform thickness is adsorbed on the surface of the rolling roller 1.
The pressure of the rolling roller is adjusted to be 330t, the negative pole piece 9 is driven by the transmission mechanism to be rolled by the upper and lower rolling rollers 1, and meanwhile, the lithium source on the surfaces of the upper and lower rolling rollers 1 is embedded into the negative pole piece 9.
The residual lithium source on the surface of the rolling roller 1 rotates along with the rolling roller 1, and when the residual lithium source is in contact with the first baffle 7 of the lithium source box 6, the residual lithium source is scraped and falls into the recovery box.
In conclusion, upon reading the present detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure can be presented by way of example only, and not limitation. Those skilled in the art will appreciate that the present application is intended to cover various reasonable variations, adaptations, and modifications of the embodiments described herein, although not explicitly described herein. Such alterations, improvements, and modifications are intended to be suggested by this disclosure, and are within the spirit and scope of the exemplary embodiments of this disclosure.
Furthermore, certain terminology has been used in this application to describe embodiments of the disclosure. For example, "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present disclosure. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various portions of this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined as suitable in one or more embodiments of the disclosure.
It should be appreciated that in the foregoing description of embodiments of the disclosure, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of the subject disclosure. Alternatively, various features may be dispersed throughout several embodiments of the application. This is not to be taken as an admission that any of the features of the claims are essential, and it is fully possible for a person skilled in the art to extract some of them as separate embodiments when reading the present application. That is, embodiments in the present application may also be understood as an integration of multiple sub-embodiments. And each sub-embodiment described herein is equally applicable to less than all features of a single foregoing disclosed embodiment.
In some embodiments, numbers expressing quantities or properties used to describe and claim certain embodiments of the application are to be understood as being modified in certain instances by the term "about", "approximately" or "substantially". For example, "about," "approximately," or "substantially" can mean a ± 20% variation of the value it describes, unless otherwise specified. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the embodiments of the application are approximations, the numerical values set forth in the specific examples are reported as precisely as possible.
Each patent, patent application, publication of a patent application, and other material, such as articles, books, descriptions, publications, documents, articles, and the like, cited herein is hereby incorporated by reference. All matters hithertofore set forth herein except as related to any prosecution history, may be inconsistent or conflicting with this document or any prosecution history which may have a limiting effect on the broadest scope of the claims. Now or later associated with this document. For example, if there is any inconsistency or conflict in the description, definition, and/or use of terms associated with any of the included materials with respect to the terms, descriptions, definitions, and/or uses associated with this document, the terms in this document are used.
Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Accordingly, the disclosed embodiments are presented by way of example only, and not limitation. Those skilled in the art may implement the present application in alternative configurations according to the embodiments of the present application. Thus, embodiments of the present application are not limited to those embodiments described with accuracy in the application.
Claims (8)
1. A rolling lithium supplement device is characterized by comprising: a rolling mechanism and a supply mechanism for providing a lithium source; the rolling mechanism comprises a rolling roller and an electrostatic absorber connected with the rolling roller; the feeding mechanism is connected with the rolling roller, and under the action of the electrostatic adsorber, the surface of the rolling roller adsorbs a lithium source provided by the feeding mechanism, so that the lithium source adsorbed on the surface of the rolling roller is embedded into the pole piece when the pole piece is rolled.
2. The rolling compaction lithium supplementing device according to claim 1, wherein the rolling compaction rolls are arranged up and down and are used for respectively rolling two surfaces of the pole piece.
3. The roller compaction lithium supplement device of claim 1, wherein the feed mechanism comprises: the lithium source storage tank, the lithium source transmission pipeline and the lithium source box are sequentially connected, lithium source powder stored in the lithium source storage tank is transmitted to the lithium source box through the lithium source transmission pipeline, the lithium source box is connected with the surface of the rolling roller, and the number of the lithium source boxes corresponds to the number of the rolling roller.
4. The rolling compaction lithium supplementing device according to claim 3, wherein the lithium source box is closed and has a powder scraping structure, the powder scraping structure comprises a first baffle plate and a second baffle plate, the first baffle plate is used for scraping residual lithium source powder on the surface of the rolling roller after rolling compaction, and the second baffle plate is used for homogenizing the thickness of the lithium source powder adsorbed on the surface of the rolling roller.
5. The rolling compaction lithium supplementing device according to claim 4, wherein the gap distance between the second baffle plate and the rolling roll is 0-1 μm.
6. The rolling lithium supplement device according to claim 1, wherein the anode of the electrostatic adsorber is connected with a rolling roller, and the cathode is connected with the ground; the output voltage of the electrostatic adsorber is 8 kV-30 kV.
7. The roller compaction lithium supplementing device according to claim 3, further comprising: and the rolling mechanism and the lithium source box are arranged in the closed box.
8. The roller compaction lithium supplementing device according to any one of claims 1 to 7, further comprising: and the transmission mechanism is used for transmitting the pole piece to the rolling mechanism.
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| CN111509193A (en) * | 2020-05-26 | 2020-08-07 | 苏州凌威新能源科技有限公司 | Rolling lithium supplement device and method |
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| CN111509193A (en) * | 2020-05-26 | 2020-08-07 | 苏州凌威新能源科技有限公司 | Rolling lithium supplement device and method |
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Address after: 421600 Jinwei Road, Guiyang Industrial Park, Qidong County, Hengyang City, Hunan Province Patentee after: Hunan lingpaidazhi Technology Co.,Ltd. Patentee after: Hunan Lingpai New Energy Technology Co.,Ltd. Patentee after: Hengyang Lingpai New Energy Technology Co.,Ltd. Patentee after: Suzhou Lingpai New Energy Technology Co.,Ltd. Patentee after: Hunan Lingpai New Energy Research Institute Co.,Ltd. Address before: 421600 Jinwei Road, Guiyang Industrial Park, Qidong County, Hengyang City, Hunan Province Patentee before: Hunan lingpaidazhi Technology Co.,Ltd. Patentee before: Hunan Lingpai New Energy Technology Co.,Ltd. Patentee before: Hengyang Lingpai New Energy Technology Co.,Ltd. Patentee before: Suzhou Lingpai New Energy Technology Co.,Ltd. Patentee before: Hunan Lingpai Dingxin Battery Research Institute Co.,Ltd. |
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Effective date of registration: 20230711 Address after: 421600 Jinwei Road, Guiyang Industrial Park, Qidong County, Hengyang City, Hunan Province Patentee after: Hunan lingpaidazhi Technology Co.,Ltd. Patentee after: Hunan Lingpai New Energy Technology Co.,Ltd. Patentee after: Hengyang Lingpai New Energy Technology Co.,Ltd. Patentee after: Hunan Lingpai New Energy Research Institute Co.,Ltd. Patentee after: Hunan Lingpai Energy Storage Technology Co.,Ltd. Address before: 421600 Jinwei Road, Guiyang Industrial Park, Qidong County, Hengyang City, Hunan Province Patentee before: Hunan lingpaidazhi Technology Co.,Ltd. Patentee before: Hunan Lingpai New Energy Technology Co.,Ltd. Patentee before: Hengyang Lingpai New Energy Technology Co.,Ltd. Patentee before: Suzhou Lingpai New Energy Technology Co.,Ltd. Patentee before: Hunan Lingpai New Energy Research Institute Co.,Ltd. |
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