Iron removal mechanism and battery slurry preparation device

Abstract

The utility model provides an iron removal mechanism and a battery slurry preparation device, and relates to the technical field of batteries. The iron removal mechanism comprises a shell provided with a containing cavity, a feeding port and a discharging port, a rotating piece rotationally arranged in the containing cavity, and a plurality of magnetic bars located in the containing cavity. The feeding port and the discharging port communicate with the containing cavity, the feeding port is located below the discharging port, the multiple magnetic bars are arranged on the rotating piece at intervals, and the rotating piece is used for driving the multiple magnetic bars to rotate relative to the shell. According to the iron removal mechanism provided by the invention, the plurality of magnetic rods are driven by the rotating part to rotate, the coverage range of a magnetic field is expanded, the condition of poor adsorption effect of an edge area is improved, and meanwhile, the battery slurry is stirred along with the plurality of magnetic rods in the accommodating cavity, so that the possibility of precipitation of the battery slurry is reduced. Therefore, the iron removal performance of the iron removal mechanism is improved, so that the production yield of batteries is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to an iron removal mechanism and a battery slurry preparation apparatus. Background Technology

[0002] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0003] In the production process of sodium-ion batteries, the battery slurry after stirring and molding generally contains oxides such as iron, cobalt, and nickel, as well as magnetic materials. Before entering the coating process, an iron removal mechanism needs to be added to remove iron from the battery slurry. A magnetic rod is set at the center of the housing of the iron removal mechanism, and the battery slurry is introduced into the housing. The magnetic rod is used to adsorb oxides such as iron, cobalt, and nickel, as well as magnetic materials in the battery slurry.

[0004] However, the battery slurry introduced into the casing is prone to sedimentation. After sedimentation, oxides such as iron, cobalt, and nickel, as well as magnetic materials, in the slurry are not easily adsorbed by the magnetic rod. Furthermore, based on the magnetic field characteristics of the magnetic rod, the magnetic field strength is stronger in the central region of the casing near the rod, allowing for the normal adsorption of oxides and magnetic materials, while the magnetic field strength is weaker in the edge regions of the casing, making it difficult for oxides and magnetic materials in the battery slurry located at the edges to be adsorbed. This results in poor iron removal performance of the iron removal mechanism, thereby reducing the battery production yield. Utility Model Content

[0005] In view of this, the purpose of this application is to provide an iron removal mechanism and a battery slurry preparation device, which aims to solve the technical problem of poor iron removal performance of the iron removal mechanism.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] In a first aspect, embodiments of this application provide an iron removal mechanism, comprising:

[0008] The housing has a receiving cavity and is provided with an inlet and an outlet, the inlet and the outlet being respectively connected to the receiving cavity, and the inlet being located below the outlet;

[0009] A rotating component is rotatably disposed within the receiving cavity;

[0010] Multiple magnetic rods are located inside the receiving cavity and are spaced apart on the rotating member, which is used to drive the multiple magnetic rods to rotate relative to the housing.

[0011] In one embodiment of the first aspect, the axis of each of the magnetic rods does not coincide with the axis of rotation of the rotating member.

[0012] In one embodiment of the first aspect, the plurality of magnetic rods are arranged at circumferential intervals along the rotating member.

[0013] In one embodiment of the first aspect, the discharge port is located on the outer periphery of the housing and is disposed near the top of the housing, and the inlet port is located at the bottom of the housing.

[0014] In one embodiment of the first aspect, the rotating member includes a first turntable and a second turntable spaced apart from each other, the first turntable being disposed near the top of the housing and the second turntable being disposed near the bottom of the housing, and each of the magnetic rods being connected between the first turntable and the second turntable.

[0015] In one embodiment of the first aspect, the iron removal mechanism further includes a rotating shaft and a driving member, the rotating shaft being rotatably disposed through the housing and connected to the first turntable, and the driving member being connected to the rotating shaft for driving the rotating shaft to rotate relative to the housing.

[0016] In one embodiment of the first aspect, a first gap communicating with the receiving cavity is provided between the first turntable and the inner peripheral side of the housing, and a second gap communicating with the receiving cavity is provided between the second turntable and the inner peripheral side of the housing.

[0017] In one embodiment of the first aspect, the feed inlet is located below the second turntable.

[0018] In one embodiment of the first aspect, the housing includes a body and a cover, the body having the receiving cavity and an opening communicating with the receiving cavity, and the body having the inlet and the outlet, the cover being detachably connected to the body to close the opening, and the rotating member being connected to the cover.

[0019] Secondly, embodiments of this application provide a battery slurry preparation apparatus, including the iron removal mechanism described in any of the embodiments of the first aspect above.

[0020] The beneficial effects of this application are as follows:

[0021] When using the iron removal mechanism provided in this application, battery slurry is fed into the receiving cavity of the casing through the inlet. Simultaneously, a rotating component drives multiple magnetic rods to rotate relative to the casing, thereby utilizing the magnetic field generated by the magnetic rods to remove iron from the battery slurry. Finally, the iron-removed battery slurry is output through the outlet. During this process, the rotation of the multiple magnetic rods, driven by the rotating component, expands the coverage area of ​​the magnetic field, improving the poor adsorption effect in edge areas. At the same time, the battery slurry is agitated together with the magnetic rods within the receiving cavity, reducing the possibility of sedimentation. Therefore, the iron removal performance of the iron removal mechanism is improved, thereby increasing the production yield of the battery.

[0022] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This paper shows a schematic diagram of the iron removal mechanism provided in one embodiment of the present application from a perspective.

[0025] Figure 2 It shows Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0026] Figure 3 This paper shows a schematic diagram of the iron removal mechanism provided in one embodiment of the present application from another perspective.

[0027] Figure 4 It shows Figure 3 Schematic diagram of the cross-sectional structure at point BB;

[0028] Figure 5 This paper illustrates an exploded view of an iron removal mechanism according to one embodiment of the present application. Figure 1 ;

[0029] Figure 6 This paper illustrates an exploded view of an iron removal mechanism according to one embodiment of the present application. Figure 2 .

[0030] Explanation of key component symbols:

[0031] 100 - Iron removal mechanism; 110 - Housing; 111 - Housing body; 1111 - Receiving cavity; 1112 - Feed inlet; 1113 - Discharge outlet; 1114 - Opening; 112 - Housing cover; 120 - Rotating component; 121 - First turntable; 1211 - First gap; 122 - Second turntable; 1221 - Second gap; 130 - Magnetic rod; 140 - Rotating shaft; 150 - Driving component; X - Circumferential direction. Detailed Implementation

[0032] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In the production process of sodium-ion batteries, the battery slurry after stirring and molding generally contains oxides such as iron, cobalt, and nickel, as well as magnetic materials. Before entering the coating process, an iron removal mechanism needs to be added to remove iron from the battery slurry in order to improve the production yield problems such as abnormal charging and discharging and poor K value. Specifically, a magnetic rod is set at the center of the housing of the iron removal mechanism, and the battery slurry is introduced into the housing. The magnetic rod is used to adsorb oxides such as iron, cobalt, and nickel, as well as magnetic materials in the battery slurry.

[0038] However, the battery slurry introduced into the casing is prone to sedimentation. After sedimentation, oxides such as iron, cobalt, and nickel, as well as magnetic materials, are not easily adsorbed by the magnetic rod. Furthermore, based on the magnetic field characteristics of the magnetic rod, the magnetic field strength is stronger in the central region of the casing near the rod, allowing for the normal adsorption of oxides and magnetic materials, while the magnetic field strength is weaker in the edge regions, making it difficult for these oxides and magnetic materials to be adsorbed. In addition, current iron removal mechanisms use a top-to-bottom flow method for the battery slurry into the casing, meaning the slurry enters from the top and exits from the bottom. This can easily lead to excessive flow velocity of the slurry within the casing due to gravity, resulting in a short residence time and insufficient adsorption of oxides and magnetic materials. Consequently, the iron removal performance of the mechanism is poor, reducing battery production yield.

[0039] like Figure 1 As shown, in a first aspect, embodiments of this application provide an iron removal mechanism 100, which relates to the field of battery technology and is mainly used in battery slurry preparation devices to remove oxides such as iron, cobalt, and nickel, as well as magnetic materials, from battery slurry.

[0040] like Figure 1 , Figure 2 and Figure 5 As shown, the iron removal mechanism 100 provided in this embodiment includes: a housing 110, a rotating component 120, and multiple magnetic rods 130.

[0041] The housing 110 has a receiving cavity 1111 and is provided with a feed inlet 1112 and a discharge outlet 1113. The feed inlet 1112 and the discharge outlet 1113 are respectively connected to the receiving cavity 1111, and the feed inlet 1112 is located below the discharge outlet 1113. The rotating member 120 is rotatably disposed in the receiving cavity 1111. Multiple magnetic rods 130 are located in the receiving cavity 1111 and are spaced apart on the rotating member 120. The rotating member 120 is used to drive the multiple magnetic rods 130 to rotate relative to the housing 110.

[0042] like Figure 3 and Figure 4 As shown, for example, the number of magnetic rods 130 can be selected as six. Of course, the number of magnetic rods 130 can also be selected as two, three, four, five, seven, etc., which can be set according to design needs. No specific limit is placed on the number of magnetic rods 130 here.

[0043] It is understood that when using the iron removal mechanism 100 provided in this embodiment, battery slurry is fed into the receiving cavity 1111 of the housing 110 through the feed port 1112. At the same time, the rotating component 120 drives multiple magnetic rods 130 to rotate relative to the housing 110, thereby using the magnetic field generated by the multiple magnetic rods 130 to remove iron from the battery slurry. Finally, the iron-removed battery slurry is output through the discharge port 1113.

[0044] During this process, multiple magnetic rods 130 rotate under the drive of the rotating component 120, expanding the coverage of the magnetic field and improving the poor adsorption effect in the edge areas. Simultaneously, the battery slurry is agitated within the receiving cavity 1111 along with the magnetic rods 130, reducing the possibility of sedimentation. Furthermore, since the inlet 1112 is located below the outlet 1113, the battery slurry is input from bottom to top, thus extending its residence time within the receiving cavity 1111. This improves the iron removal performance of the iron removal mechanism 100, thereby increasing the battery production yield.

[0045] In one embodiment, the axis of each magnetic rod 130 does not coincide with the axis of rotation of the rotating member 120. This enhances the agitation effect of each magnetic rod 130 on the battery slurry, reducing the possibility of sedimentation and making it easier for oxides such as iron, cobalt, and nickel, as well as magnetic materials in the battery slurry, to be adsorbed by the magnetic rods 130.

[0046] like Figure 3 and Figure 4As shown, in one embodiment, multiple magnetic rods 130 are spaced apart along the circumferential direction X of the rotating member 120, such that each two adjacent magnetic rods 130 are separated in the circumferential direction X of the rotating member 120. This can improve the stirring effect of each magnetic rod 130 on the battery slurry, thereby reducing the possibility of precipitation in the battery slurry and making it easier for oxides such as iron, cobalt, and nickel and magnetic materials in the battery slurry to be adsorbed by the magnetic rods 130.

[0047] Of course, in the above embodiments, the multiple magnetic rods 130 can also be arranged in a rectangular array at intervals, or at intervals along a straight line, which can also improve the stirring effect of each magnetic rod 130 on the battery slurry. Here, no specific limitation is made on the implementation of the multiple magnetic rods 130 being arranged at intervals on the rotating member 120.

[0048] like Figure 3 As shown, in one embodiment, the discharge port 1113 is located on the outer periphery of the housing 110 and is positioned near the top of the housing 110, while the inlet port 1112 is located at the bottom of the housing 110. This arrangement of the inlet port 1112 below the discharge port 1113 extends the residence time of the battery slurry within the receiving cavity 1111, allowing the magnetic rod 130 to more effectively adsorb oxides such as iron, cobalt, and nickel, as well as magnetic materials, from the battery slurry.

[0049] Of course, in the above embodiments, both the inlet 1112 and the outlet 1113 can be located on the outer periphery of the housing 110, with the inlet 1112 positioned near the top of the housing 110 and the outlet 1113 positioned near the top of the housing 110; alternatively, the inlet 1112 can be located at the bottom of the housing 110 and the outlet 1113 at the top of the housing 110. Both of these methods allow the battery slurry to flow slowly from bottom to top. Therefore, the implementation of the inlet 1112 being located below the outlet 1113 is not specifically limited here.

[0050] like Figure 1 , Figure 2 and Figure 5 As shown, in one embodiment, the rotating member 120 includes a first turntable 121 and a second turntable 122 arranged at intervals. The first turntable 121 is arranged near the top of the housing 110, and the second turntable 122 is arranged near the bottom of the housing 110. Each magnetic rod 130 is connected between the first turntable 121 and the second turntable 122.

[0051] Understandably, since each magnetic rod 130 is connected between the first turntable 121 and the second turntable 122, the first turntable 121 and the second turntable 122 can respectively support the two ends of the magnetic rod 130, thereby enhancing the stability of the magnetic rod 130 in the receiving cavity 1111, so that it can better agitate the battery slurry for iron removal.

[0052] Of course, in the above embodiments, the rotating component 120 can also be a single turntable, which connects multiple magnetic rods 130 and can also drive multiple magnetic rods 130 to rotate relative to the housing 110. No specific restrictions are placed on the structure of the rotating component 120 here.

[0053] like Figure 1 and Figure 2 As shown, the iron removal mechanism 100 further includes a rotating shaft 140 and a driving member 150. The rotating shaft 140 is rotatably disposed through the housing 110 and connected to the first turntable 121. The driving member 150 is connected to the rotating shaft 140 and is used to drive the rotating shaft 140 to rotate relative to the housing 110, so as to drive multiple magnetic rods 130 to rotate relative to the housing 110 by means of the rotating member 120, thereby agitating the battery slurry to remove iron.

[0054] For example, the drive component 150 can be a drive motor, drive motor or other component capable of outputting torque, and no specific limitation is made on the type of drive component 150 here.

[0055] It should be noted that, in addition to using the drive component 150 and the rotating shaft 140 to drive the rotating component 120 to rotate, a handle connected to the rotating component 120 can also be provided. The rotating component 120 can also be driven to rotate by manually turning the handle. No specific restrictions are placed on the way the rotating component 120 is driven to rotate.

[0056] like Figure 1 and Figure 2 As shown, further, there is a first gap 1211 between the first turntable 121 and the inner peripheral side of the housing 110, which communicates with the receiving cavity 1111, and there is a second gap 1221 between the second turntable 122 and the inner peripheral side of the housing 110, which communicates with the receiving cavity 1111.

[0057] It is understandable that by setting the first gap 1211 and the second gap 1221, the battery slurry can be guided to the vicinity of the outer periphery of the magnetic rod 130, so that the magnetic rod 130 can adsorb oxides such as iron, cobalt and nickel and magnetic materials in the battery slurry.

[0058] like Figure 1 and Figure 2 As shown, the feed inlet 1112 is further located below the second turntable 122. Thus, after the battery slurry enters the receiving cavity 1111 through the feed inlet 1112, the first gap 1211 can guide the battery slurry to the vicinity of the outer periphery of the magnetic rod 130. The magnetic field strength near the outer periphery of the magnetic rod 130 is greater than the magnetic field strength near the end of the magnetic rod 130, thereby further improving the iron removal performance of the iron removal mechanism 100.

[0059] like Figure 1 , Figure 5 and Figure 6 As shown, in one embodiment, the housing 110 includes a housing body 111 and a housing cover 112. The housing body 111 has a receiving cavity 1111 and an opening 1114 communicating with the receiving cavity 1111. The housing body 111 is provided with a feed inlet 1112 and a discharge outlet 1113. The housing cover 112 is detachably connected to the housing body 111 to close the opening 1114. A rotating member 120 is connected to the housing cover 112.

[0060] For example, the cover 112 and the body 111 can be connected by a quick clip, or the cover 112 and the body 111 can be connected by threads, both of which can achieve a detachable connection between the two. No specific restrictions are placed on the implementation of the detachable connection between the cover 112 and the body 111.

[0061] Understandably, since the cover 112 is detachably connected to the body 111 and the rotating part 120 is connected to the cover 112, it is convenient to maintain the magnetic rod 130. For example, when the magnetic rod 130 is full of oxides and magnetic materials such as iron, cobalt and nickel, the cover 112 and the magnetic rod 130 can be removed from the body 111 together to clean the magnetic rod 130.

[0062] Secondly, embodiments of this application provide a battery slurry preparation apparatus, including the iron removal mechanism 100 described in any of the embodiments of the first aspect. The battery slurry preparation apparatus is used to provide battery slurry to a coating process to facilitate the fabrication of electrode sheets.

[0063] It is understood that since the battery slurry preparation apparatus provided in this embodiment has the iron removal mechanism 100 in any of the embodiments of the first aspect, it has all the beneficial effects of the iron removal mechanism 100, which will not be listed and explained one by one here.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An iron removal mechanism, characterized in that, include: The housing has a receiving cavity and is provided with an inlet and an outlet, the inlet and the outlet being respectively connected to the receiving cavity, and the inlet being located below the outlet; A rotating component is rotatably disposed within the receiving cavity; Multiple magnetic rods are located inside the receiving cavity and are spaced apart on the rotating member, which is used to drive the multiple magnetic rods to rotate relative to the housing.

2. The iron removal mechanism according to claim 1, characterized in that, The axis of each of the magnetic rods does not coincide with the axis of rotation of the rotating component.

3. The iron removal mechanism according to claim 1, characterized in that, The multiple magnetic rods are arranged at intervals along the circumference of the rotating member.

4. The iron removal mechanism according to claim 1, characterized in that, The discharge port is located on the outer periphery of the housing and is positioned near the top of the housing, while the inlet is located at the bottom of the housing.

5. The iron removal mechanism according to any one of claims 1 to 4, characterized in that, The rotating component includes a first turntable and a second turntable arranged at intervals. The first turntable is located near the top of the housing, and the second turntable is located near the bottom of the housing. Each magnetic rod is connected between the first turntable and the second turntable.

6. The iron removal mechanism according to claim 5, characterized in that, The iron removal mechanism further includes a rotating shaft and a driving component. The rotating shaft is rotatably disposed through the housing and connected to the first turntable. The driving component is connected to the rotating shaft and is used to drive the rotating shaft to rotate relative to the housing.

7. The iron removal mechanism according to claim 5, characterized in that, The first turntable and the inner circumferential side of the housing have a first gap communicating with the receiving cavity, and the second turntable and the inner circumferential side of the housing have a second gap communicating with the receiving cavity.

8. The iron removal mechanism according to claim 7, characterized in that, The feed inlet is located below the second turntable.

9. The iron removal mechanism according to any one of claims 1 to 4, characterized in that, The housing includes a body and a cover. The body has the receiving cavity and an opening communicating with the receiving cavity. The body is provided with the inlet and the outlet. The cover is detachably connected to the body to close the opening. The rotating component is connected to the cover.

10. A battery slurry preparation apparatus, characterized in that, The iron removal mechanism includes any one of claims 1 to 9.

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