Impurity removal device and battery production system

Abstract

According to the impurity removal device and the battery production system, in the impurity removal process, impurities are adsorbed through an impurity removal part; after adsorption, the impurity removal part is driven to move in the through hole, so that the adsorbed impurities are moved to the position above the material receiving surface; then, the impurity stripping part is driven to move or deform towards the impurity removal part, so that the impurity stripping part is in contact with the impurity removal part; and after contact, the impurity stripping part is driven to move towards one side of the material receiving surface, so that the impurities adsorbed on the impurity removal part are stripped off by the impurity stripping part and flow to the material receiving surface. According to the design, the impurity stripping part is arranged on the periphery of the impurity removal part, automatic impurity stripping is achieved in the impurity removal process, the contact rate of workers and slurry is reduced, and operation safety is improved; meanwhile, the manual labor is reduced, and the battery preparation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to an impurity removal device and a battery production system. Background Art

[0002] With the technological development trend of lithium batteries, higher requirements are put forward for various performances of lithium batteries, among which the reliability of lithium batteries is particularly important. In the active materials of batteries, there are generally metal impurities such as copper, zinc, and iron, and the presence of these impurities seriously affects the reliability of the battery. For this reason, in the process of battery preparation, an iron removal device is usually used to remove iron impurities in the active materials of the battery to improve the reliability of the battery. However, due to the structural design of the traditional iron removal device, its degree of automation is not high, the amount of manual labor is large, the operating safety is poor, and the preparation efficiency is low. Utility Model Content

[0003] Based on this, it is necessary to provide a de-impurity device and a battery production system with a high degree of automation, low manual labor, high operational safety, and high battery preparation efficiency.

[0004] In the first aspect, the present application provides an impurity removal device, which includes: an impurity removal piece for absorbing impurities in a slurry; a material receiving body, which is provided with through holes along its thickness direction, and the material receiving body includes a material receiving surface located at the periphery of the through holes, and the impurity removal piece is slidably arranged in the through holes; wherein the impurity removal device also includes an impurity removal component arranged on the material receiving body, the impurity removal component is at least partially arranged around the periphery of the impurity removal component, and the impurity removal component is configured to be able to contact the impurity removal component under the action of an external force.

[0005] The above-mentioned impurity removal device uses the impurity removal piece to absorb impurities during the impurity removal process; after absorption, the impurity removal piece is driven to move in the perforation so that the absorbed impurities move to the top of the material receiving surface; then, under the action of external force, the impurity removal component is driven to contact with the impurity removal piece; after contact, the impurity removal component is driven to move along the side facing the material receiving surface so that the impurities absorbed on the impurity removal piece are removed by the impurity removal component and flow onto the material receiving surface. In this design, the impurity removal component is arranged on the periphery of the impurity removal piece, and automatic impurity removal is realized during the impurity removal process, which reduces the contact rate between manual labor and slurry and improves operation safety; at the same time, it reduces manual labor, thereby improving battery preparation efficiency.

[0006] In some embodiments, the debris removal component includes an expansion ring with an inner ring, the expansion ring is arranged in the through hole, and the debris removal piece is slidably arranged in the inner ring, and the expansion ring can expand and deform toward the inner ring under the action of external force and contact with the debris removal piece. In this design, the debris removal component is designed as an expandable and deformable structure, and the expansion ring is expanded and deformed toward the inner ring by the action of external force, and the size of the inner ring is reduced, so that the expansion ring contacts the debris removal piece, so that impurities can effectively fall from the debris removal piece to the material connection surface.

[0007] In some embodiments, the impurity removal component further includes a conducting structure, which is disposed in the material receiving body and is used to pass a filling medium into the inside of the expansion ring or the side facing away from the inner ring, so that the expansion ring expands toward the inner ring and contacts the impurity removal component. With such a design, by passing the filling medium, the expansion ring expands and deforms toward the inner ring, shrinks the size of the inner ring, and contacts the impurity removal component, so that impurities effectively fall from the impurity removal component to the material receiving surface.

[0008] In some embodiments, an expansion cavity extending around the outer circumference of the inner ring is provided in the expansion ring, and the conducting structure includes a connecting pipe, which is provided in the material receiving body and communicates with the expansion cavity. In this design, the connecting pipe and the expansion cavity are introduced, so that the expansion ring can stably expand and deform toward the inner ring under the action of the filling medium, so as to realize effective impurity removal operation.

[0009] In some embodiments, the material receiving body includes a material receiving body and a support member, the material receiving body has a cavity, the support member is arranged in the cavity and penetrates the material receiving body along the thickness direction of the material receiving body, the perforation is arranged in the support member, the material receiving surface is arranged on a surface of the material receiving body facing away from the cavity, the connecting pipe is arranged in the cavity and passes through the side of the support member to communicate with the expansion cavity. In this design, the material receiving body is designed as a material receiving body and a support member, so that the connecting pipe can pass the filling medium into the expansion ring to achieve effective expansion deformation; at the same time, it is also convenient to hide the connecting pipe and simplify the external structure of the material receiving body.

[0010] In some embodiments, the material receiving body includes a bottom plate, a cover plate, and a surrounding edge. The bottom plate and the surrounding edge are arranged in the surrounding edge at intervals to enclose a cavity. The support member is arranged in the cavity and penetrates the bottom plate and the cover plate. The material receiving surface is arranged on a surface of the cover plate facing away from the cavity. In this design, the material receiving body is designed as the bottom plate, the surrounding edge, and the cover plate, so that the support member is stably fixed on the material receiving body, so as to achieve stable impurity removal.

[0011] In some embodiments, the conducting structure includes a connecting flow channel disposed in the material receiving body, an expansion gap is formed between the expansion ring and the inner wall of the perforation, and the connecting flow channel is connected to the expansion gap. With such a design, an expansion gap is formed between the expansion ring and the inner wall of the perforation, which facilitates the filling medium to pass into the expansion gap, so that the expansion ring expands and deforms toward the inner ring, so that the expansion ring contacts the impurity removal piece, thereby facilitating effective impurity removal.

[0012] In some embodiments, the expansion ring includes a main body and sleeve parts provided at both ends of the main body, and the two sleeve parts are respectively sleeved at the two ends of the main body, and an expansion gap is formed between the main body and the inner wall of the through hole. In this design, the expansion ring is designed as a main body and a sleeve part, so that the main body is stably fixed at the two ends of the through hole through the sleeve part, so that the expansion ring is deformed to contact the debris removal piece, so as to achieve stable debris removal.

[0013] In some embodiments, the impurity removal device further includes an input pipe, which is arranged on the side of the material receiving body facing away from the material receiving surface and is connected to the connecting flow channel. With such a design, the input pipe is introduced to facilitate the introduction of the filling medium into the connecting flow channel, so that the expansion ring stably expands and deforms toward the inner ring, thereby making the expansion ring contact with the impurity removal piece, thereby achieving stable impurity removal.

[0014] In some embodiments, the impurity removal device further includes a drain pipe, which is located on the side of the material receiving body that is opposite to the material receiving surface and extends to the material receiving surface, and the input pipe is sleeved outside the drain pipe. In such a design, the drain pipe is arranged on the side of the material receiving body that is opposite to the material receiving surface, which is convenient for uniformly discharging impurities on the material receiving surface; at the same time, the structural arrangement above the material receiving surface is reduced, leaving space for the movement of the impurity removal parts. In addition, the input pipe is sleeved outside the drain pipe, so that the distribution between the input pipe and the drain pipe is more compact, and the space on the side of the material receiving body that is opposite to the material receiving surface is fully utilized.

[0015] In some embodiments, the material receiving body includes a material receiving body and a support member, the support member runs through the material receiving body, the connecting flow channel is arranged in the material receiving body, and the support member is provided with openings respectively connected with the connecting flow channel and the through hole. In this way, the material receiving body is designed as a material receiving body and a support member, so that the connecting flow channel is arranged in the material receiving body, so that the connecting flow channel and the through hole in the support member are connected, so that the impurity removal operation can be carried out stably.

[0016] In some embodiments, the inner ring is constructed so that when the expansion ring is in an unexpanded state, there is a clearance between the inner wall of the inner ring and the debris removal member. In this design, a clearance is left between the inner ring and the debris removal member, which facilitates the smooth movement of the debris removal member in the inner ring, so that the debris removal operation can proceed smoothly.

[0017] In some embodiments, the minimum value of the gap passing through the gap is recorded as D, where 3mm≤D≤7mm. With such a design, the minimum value of the gap passing through the gap is controlled between 3mm and 7mm, so that the debris removal piece can stably pass through the inner ring, thereby making the debris removal operation stable; at the same time, it is also convenient to control the amount of filling medium introduced and reasonably control the cost of debris removal.

[0018] In some embodiments, there are multiple perforations and expansion rings, all of which are arranged at intervals on the material receiving body, and at least one expansion ring is arranged in each perforation. Such a design introduces multiple perforations and expansion rings, which facilitates multiple impurity removal operations at the same time and improves impurity removal efficiency.

[0019] In some embodiments, the impurity removal device further includes a cleaning component, and a discharge port is provided on the material receiving surface, and the cleaning component is used to clean the impurities on the material receiving surface into the discharge port. With such a design, the introduction of the cleaning component facilitates the unified cleaning of the impurities removed into the discharge port, thereby facilitating the unified treatment of the impurities.

[0020] In some embodiments, the cleaning assembly includes a delivery pipe and a nozzle connected to the delivery pipe, and the nozzle is located above the material receiving surface. In this design, the delivery pipe and the nozzle are introduced to facilitate cleaning of the material receiving surface and provide a cleaning effect.

[0021] In some embodiments, the impurity removal device includes a cavity, and the material receiving body is circumferentially sealed and connected to the cavity wall of the cavity. With such a design, the cavity is introduced to facilitate accommodating the slurry, so that the impurity removal operation can be carried out more smoothly.

[0022] In some embodiments, the impurity removal device further includes a driving assembly, which is used to drive the impurity removal piece to move in the perforation along the thickness direction of the material receiving body. With such a design, the introduction of the driving assembly enables the impurity removal piece to move automatically, thereby improving the automation of the impurity removal operation and facilitating the improvement of impurity removal efficiency.

[0023] In a second aspect, the present application provides a battery production system, the battery production system comprising any of the above impurity removal devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a partial structural schematic diagram of the impurity removal device described in some embodiments of the present application.

[0025] Figure 2 This is a perspective view of the coordination structure between the material receiving body and the miscellaneous components described in some embodiments of the present application.

[0026] Figure 3 This is another perspective view of the coordination structure between the material receiving body and the miscellaneous components described in some embodiments of the present application.

[0027] Figure 4 for Figure 3 Structural cross-sectional view along AA direction.

[0028] Figure 5 It is a schematic diagram of the structure of the material receiving body described in some embodiments of the present application.

[0029] Figure 6 for Figure 5 A structural sectional view of the material receiving body described in .

[0030] Figure 7 This is a structural diagram of the material receiving body and the miscellaneous components described in other embodiments of the present application.

[0031] Figure 8 for Figure 7 A cross-sectional view of the structure of the material receiving body and the miscellaneous parts described in FIG.

[0032] Fig. 9 This is a schematic diagram of the structure between the expansion ring and the impurity removal component when not expanded as described in some embodiments of the present application.

[0033] 100, impurity removal device; 10, material receiving body; 11, perforation; 12, material receiving surface; 13, discharge port; 14, material receiving body; 141, bottom plate; 142, cover plate; 143, edge; 144, cavity; 15, support member; 151, opening; 16, sealing ring; 20, impurity removal member; 30, impurity removal member; 31, expansion ring; 311, main body; 312, sleeve part; 313, expansion gap; 314, expansion cavity; 32, inner ring; 33, conduction structure; 331, connecting pipe; 332, connecting flow channel; 34, through gap; 40, input pipe; 41, drain pipe; 50, cavity; 60, cleaning component; 61, delivery pipe; 62, nozzle; X, thickness direction. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0040] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding.

[0041] During the battery preparation process, metal impurities such as copper, zinc, and iron are generally present in the battery active materials, and the presence of these impurities seriously affects the reliability of the battery. For this reason, an iron removal device is usually used to magnetically absorb the iron metal in the slurry through a magnetic rod and remove it from the slurry. In order to reuse the magnetic rod, the iron metal on the magnetic rod needs to be manually pulled off. However, this method increases the manual labor and reduces the production efficiency of the battery; at the same time, the slurry contains highly corrosive substances, and manual operations are prone to contact with the slurry, increasing the risk of operational safety.

[0042] Based on this, the present application provides an impurity removal device. During the impurity removal process, an impurity removal piece is used to absorb impurities. After absorption, the impurity removal piece is driven to move in the perforation, so that the absorbed impurities move to the top of the material receiving surface. Then, under the action of external force, the impurity removal component is driven to contact the impurity removal piece. After contact, the impurity removal component is driven to move along the side facing the material receiving surface, so that the impurities absorbed on the impurity removal piece are removed by the impurity removal component and flow onto the material receiving surface. In this design, an impurity removal component is arranged on the periphery of the impurity removal piece, and automatic impurity removal is realized during the impurity removal process, reducing the contact rate between manual labor and slurry, and improving operational safety. At the same time, the manual labor is reduced, thereby improving the efficiency of battery preparation.

[0043] It should be noted that the impurities may be, but are not limited to, iron metal, and the impurity removal element absorbs the iron metal in the slurry by magnetic attraction.

[0044] According to some embodiments of this application, please refer to Figure 1 and Figure 2 The present application provides an impurity removal device 100, which includes: a material receiving body 10, an impurity removal piece 20, and an impurity removal piece 30 disposed on the material receiving body 10. The impurity removal piece 20 is used to absorb impurities in the slurry; the material receiving body 10 is provided with a through hole 11 along its thickness direction X, and the material receiving body 10 includes a material receiving surface 12 located at the periphery of the through hole 11, and the impurity removal piece 20 is slidably disposed in the through hole 11. The impurity removal piece 30 is at least partially disposed around the periphery of the impurity removal piece 20, and the impurity removal piece 30 is configured to be able to contact the impurity removal piece 20 under the action of an external force.

[0045] The impurity removing member 20 refers to a structure capable of absorbing impurities in the slurry. For example, the impurity removing member 20 may be a magnetic bar that absorbs impurities such as iron metal in the slurry by magnetic attraction.

[0046] The debris removing component 30 refers to a structure that can move or deform toward the debris removing component 20 under the action of external force and contact the side of the debris removing component 20 during the debris removing process, so that when the debris removing component 20 moves relative to the debris removing component 30, the debris removing component 30 can remove the impurities adsorbed on the debris removing component 20 to achieve the automatic material removing operation. The debris removing component 30 can contact the debris removing component 20 by moving, for example: the debris removing component 30 can be a plurality of telescopic structures around the periphery of the debris removing component 20, and the telescopic structure moves radially under the drive of a motor or other power equipment, so that the telescopic structure contacts the side of the debris removing component 20; it can also contact the debris removing component 20 by structural deformation, for example: under inflation, the debris removing component 30 expands, so that the debris removing component 30 contacts the debris removing component 20, and at this time, the debris removing component 30 can be designed as a deformable structure, such as an elastic film, an airbag, etc. Among them, the external force of this embodiment is relative to the debris removing component 30, which can be understood as the force acting on the debris removing component 30 and driving it to contact with the debris removing component 20. The external force can be the telescopic force provided by the cylinder, hydraulic cylinder, or electric cylinder; it can also be the squeezing force from gas or liquid, etc.

[0047] It should be noted that the impurity-removing component 30 can be set in the through hole 11 or on the material receiving surface 12, but it needs to surround the outer periphery of the through hole 11 so that the impurity-removing component 30 can move or deform to contact the side of the impurity-removing component 20. At the same time, before the surface of the impurity-removing component 20 absorbs impurities, the impurity-removing component 30 surrounds the outer periphery of the impurity-removing component 20 and maintains a gap between the impurity-removing component 20, so that the impurity-removing component 20 can move smoothly in the through hole 11, so that the impurity-removing component 20 can move into the slurry and move the absorbed impurities to the top of the material receiving surface 12.

[0048] Specifically in some embodiments, during the impurity removal process, the impurity removal piece 20 can be driven in the perforation 11 so that the impurity removal piece 20 extends into the slurry, so that the impurity removal piece 20 absorbs impurities in the slurry; after adsorption, the impurity removal piece 20 is driven to move in the opposite direction so that the impurities on the impurity removal piece 20 move to the top of the material receiving surface 12; at this time, the external force drives the impurity removal component 30 to contact the impurity removal piece 20; then, the impurity removal piece 20 is driven to move along the side toward the material receiving surface 12, so that the impurity removal component 30 removes the impurities on the impurity removal piece 20, thereby allowing the impurities to flow onto the material receiving surface 12, thereby realizing automatic impurity removal.

[0049] With such a design, a debris removal component 30 is provided on the periphery of the debris removal component 20, so that automatic debris removal can be achieved during the debris removal process, thereby reducing the contact rate between manual labor and slurry and improving operational safety; at the same time, manual labor can be reduced, thereby improving battery preparation efficiency.

[0050] According to some embodiments of the present application, optionally, please refer to Figure 2The debris removing component 30 includes an expansion ring 31 having an inner ring 32, the expansion ring 31 is arranged in the through hole 11, and the debris removing piece 20 is slidably penetrated in the inner ring 32. The expansion ring 31 can expand and deform toward the inner ring 32 under the action of external force and contact the debris removing piece 20.

[0051] During the impurity removal process, external force can drive the expansion ring 31 to expand toward the inner ring 32, causing the inner ring 32 to shrink, so that the expansion ring 31 contacts the side of the impurity removal member 20. There are many ways to achieve the expansion of the expansion ring 31, such as: gas or liquid can be introduced into the surface or inside of the expansion ring 31, so that the expansion ring 31 is squeezed and expands; of course, mechanical force can also be applied to the surface of the expansion ring 31, such as the expansion force of a cylinder, a hydraulic cylinder, or an electric cylinder, so that the expansion ring 31 expands outward and deforms.

[0052] In this way, the impurity removing component 30 is designed as an expandable and deformable structure. Through the action of external force, the expansion ring 31 expands and deforms toward the inner ring 32, shrinking the size of the inner ring 32, so that the expansion ring 31 contacts the impurity removing component 20, so that impurities can effectively fall from the impurity removing component 20 to the material receiving surface 12.

[0053] According to some embodiments of the present application, optionally, please refer to Figure 2 The impurity removing component 30 also includes a conducting structure 33, which is arranged in the material receiving body 10 and is used to introduce a filling medium into the expansion ring 31 or the side facing away from the inner ring 32, so that the expansion ring 31 expands toward the inner ring 32 and contacts the impurity removing component 20.

[0054] The expansion ring 31 refers to an annular structure that can expand and deform under the pressure of the filling medium, and an inner ring 32 is formed inside the expansion ring 31. When the expansion ring 31 is set in the through hole 11, the impurity removal piece 20 is also located in the inner ring 32 when it is in the through hole 11. In this way, when impurities need to be removed, the filling medium can be passed into the inside of the expansion ring 31 or the side facing away from the inner ring 32, so that the expansion ring 31 can expand and deform toward the inner ring 32, shrink the inner ring 32, and make the expansion ring 31 contact with the impurity removal piece 20. The expansion ring 31 is set in the through hole 11, and it can be completely located in the through hole 11, or it can be partially located in the through hole 11, and the other part extends out of the end of the through hole 11 close to the material connection surface 12.

[0055] When the expansion ring 31 is deformed by expansion, the filling medium can be introduced into the expansion ring 31, such as the expansion ring 31 can be designed as an annular airbag structure, and the filling medium is filled into the annular airbag structure; or, the filling medium can be introduced into the side of the filling medium facing away from the inner ring 32, so that the filling medium expands toward the inner ring 32, such as the expansion ring 31 can be an annular elastic membrane, and the expansion ring 31 is arranged on the inner wall of the perforation 11, so that the filling medium is filled between the expansion ring 31 and the inner wall of the perforation 11. In addition, the filling medium can be a gas, such as nitrogen, carbon dioxide, air, etc., and of course it can also be a liquid.

[0056] With such a design, by introducing a filling medium, the expansion ring 31 expands and deforms toward the inner ring 32 , shrinking the size of the inner ring 32 , so that the expansion ring 31 contacts the impurity removing member 20 , so that impurities can effectively fall from the impurity removing member 20 to the material receiving surface 12 .

[0057] According to some embodiments of the present application, optionally, please refer to Figure 3 and Figure 4 An expansion cavity 314 extending around the outer circumference of the inner ring 32 is provided in the expansion ring 31 , and the conducting structure 33 includes a connecting pipe 331 , which is provided in the receiving body 10 and communicated with the expansion cavity 314 .

[0058] The expansion cavity 314 refers to a structure in a closed state inside the expansion ring 31, into which a filling medium can be introduced, so that the filling medium squeezes the expansion cavity 314, causing the expansion ring 31 to expand and deform toward the inner ring 32. The expansion cavity 314 is located outside the inner ring 32 and extends around the outer circumference of the inner ring 32. The connecting pipe 331 refers to a structure connected to the expansion cavity 314, and a filling medium is introduced into the expansion cavity 314 through the connecting pipe 331.

[0059] In addition, in order to stably fix the expansion ring 31, an annular groove can be provided on the inner wall of the through hole 11, and the expansion ring 31 is embedded in the annular groove. At the same time, in the same through hole 11, the number of expansion rings 31 can be one or more, and all the expansion rings 31 are distributed in sequence in the through hole 11 along the thickness direction X of the receiving body 10.

[0060] With such a design, the connecting pipe 331 and the expansion chamber 314 are introduced, so that the expansion ring 31 can stably expand and deform toward the inner ring 32 under the action of the filling medium, thereby facilitating effective impurity removal operations.

[0061] According to some embodiments of the present application, optionally, please refer to Figure 5 and Figure 6 The material receiving body 10 includes a material receiving body 14 and a support member 15. The material receiving body 14 has a cavity 144. The support member 15 is arranged in the cavity 144 and penetrates the material receiving body 14 along the thickness direction X of the material receiving body 10. The through hole 11 is penetrated by the support member 15. The material receiving surface 12 is arranged on a surface of the material receiving body 14 facing away from the cavity 144. The connecting pipe 331 is arranged in the cavity 144 and passes through the side of the support member 15 to communicate with the expansion chamber 314.

[0062] The material receiving body 14 is a hollow structure with space inside, a part of the support member 15 is located in the cavity 144 of the material receiving body 14, and its two ends respectively pass through the two surfaces of the material receiving body 14 along the thickness direction X. The through hole 11 passes through the support member 15 along the thickness direction X of the material receiving body 10, and the support member 15 is also a hollow structure. Specifically, in some examples, the support member 15 is a hollow cylinder.

[0063] The connecting pipe 331 is located in the cavity 144, so that the connecting pipe 331 can be hidden in the material receiving body 14 while achieving stable access to the filling medium, simplifying the external structure of the material receiving body 10. The connecting pipe 331 is located in the cavity 144 and passes through the side of the support member 15 to communicate with the expansion chamber 314. For example, the side of the support member 15 is provided with an opening 151, and the connecting pipe 331 passes through the opening 151 and communicates with the expansion chamber 314.

[0064] In addition, there are many ways to connect the support member 15 to the material receiving body 14, such as but not limited to welding, bolt connection, clamping, etc. At the same time, the material receiving body 14 and the support member 15 can also be an integrated structure. In addition, the number of the support member 15 can be one or more. When the number of the support member 15 is more than one, each support member 15 is penetrated by a through hole 11.

[0065] In this design, the material receiving body 10 is designed as a material receiving body 14 and a support member 15, so that the connecting pipe 331 can pass the filling medium into the expansion ring 31 to achieve effective expansion deformation; at the same time, it is also convenient to hide the connecting pipe 331 and simplify the external structure of the material receiving body 10.

[0066] According to some embodiments of the present application, optionally, please refer to Figure 6 The material receiving body 14 includes a bottom plate 141, a cover plate 142 and a surrounding edge 143. The bottom plate 141 and the surrounding edge 143 are spaced apart and arranged inside the surrounding edge 143 to enclose a cavity 144. The support member 15 is arranged in the cavity 144 and passes through the bottom plate 141 and the cover plate 142. The material receiving surface 12 is arranged on a surface of the cover plate 142 facing away from the cavity 144.

[0067] The bottom plate 141 and the cover plate 142 are spaced apart in the surrounding edge 143 and enclose a cavity 144, so that the connecting pipe 331 is sealed between the bottom plate 141, the surrounding edge 143 and the cover plate 142. The surrounding edge 143 refers to an annular structure with a space inside, which is a cylindrical structure, and can also be a structure such as a quadrangular prism or a pentagonal prism. One end of the surrounding edge 143 can extend beyond a surface of the cover plate 142 facing away from the cavity 144, so that a space for accommodating impurities that are pulled off can be formed between the surrounding edge 143 and a surface of the cover plate 142 facing away from the space. There are many ways to connect the bottom plate 141, the cover plate 142 and the surrounding edge 143, such as: it can be but not limited to bolt connection, clamping, riveting, welding, one-piece molding, etc., wherein the one-piece molding method can be but not limited to injection molding, die casting, 3D printing, etc.

[0068] In this way, the material receiving body 14 is designed to be composed of a bottom plate 141 , a surrounding edge 143 and a cover plate 142 , so that the support member 15 is stably fixed on the material receiving body 14 , so as to achieve stable impurity removal.

[0069] According to some embodiments of the present application, optionally, please refer to Figure 7 and Figure 8 The conducting structure 33 includes a connecting flow channel 332 disposed in the material receiving body 10 , an expansion gap 313 is formed between the expansion ring 31 and the inner wall of the through hole 11 , and the connecting flow channel 332 is connected to the expansion gap 313 .

[0070] The expansion ring 31 of this embodiment expands because the filling medium squeezes an outer surface of the expansion ring 31 facing away from the inner ring 32, so that the expansion ring 31 expands and deforms toward the inner ring 32. The expansion ring 31 may be a membrane with elastic function, which is sealed on the inner wall of the through hole 11. When the filling medium passes between the expansion ring 31 and the inner wall of the through hole 11, the filling medium squeezes the expansion ring 31, so that it deforms toward the side of the inner ring 32.

[0071] There are many ways to fix the expansion ring 31 on the inner wall of the through hole 11, such as: fixing the two ends of the expansion ring 31 on the inner wall of the through hole 11 by clamping, welding, etc.; or, sleeve-fitting the two ends of the expansion ring 31 on the two ends of the through hole 11.

[0072] With such a design, an expansion gap 313 is formed between the expansion ring 31 and the inner wall of the perforation 11, which facilitates the filling medium to pass into the expansion gap 313, so that the expansion ring 31 expands and deforms toward the inner ring 32, thereby making the expansion ring 31 abut against the debris removal piece 20, thereby facilitating effective debris removal.

[0073] According to some embodiments of the present application, optionally, please refer to Figure 8 The expansion ring 31 includes a main body 311 and sleeve portions 312 provided at both ends of the main body 311 . The two sleeve portions 312 are respectively sleeved at both ends of the main body 311 , and an expansion gap 313 is formed between the main body 311 and the inner wall of the through hole 11 .

[0074] Each sleeve portion 312 is sleeved on a corresponding end of the main body 311, so that the expansion ring 31 is stably fixed in the through hole 11. In this way, after the filling medium is introduced into the expansion gap 313, the main body 311 can expand and deform toward one side of the inner ring 32, so that the main body 311 can contact the side of the debris removal member 20. There are many ways to sleeve the sleeve portion 312 on one end of the through hole 11, for example: one end of the sleeve portion 312 is connected to the main body 311, and the other end is spaced from the main body 311, so that one end of the through hole 11 can be sleeved between the main body 311 and the sleeve portion 312.

[0075] The connection method between the sleeve portion 312 and the main body portion 311 may be, but is not limited to, bonding, clamping, welding, etc.; it may also be an integrated structure.

[0076] In this design, the expansion ring 31 is designed to be a main body 311 and a sleeve part 312, so that the main body 311 is stably fixed at both ends of the through hole 11 through the sleeve part 312, so that the expansion ring 31 is deformed to contact the debris removing member 20 to achieve stable debris removal.

[0077] According to some embodiments of the present application, optionally, please refer to Figure 8 The impurity removing device 100 further includes an input pipe 40 , which is disposed on a side of the material receiving body 10 facing away from the material receiving surface 12 and is connected to the connecting flow channel 332 .

[0078] The input pipe 40 is a structure that can be used to introduce a filling medium into the communication channel 332. During the impurity removal process, the filling medium can be introduced into the input pipe 40, so that the filling medium flows into the expansion gap 313 through the communication channel 332, driving the expansion ring 31 to expand and deform, and shrinking the inner ring 32. There are many ways to connect the input pipe 40 to the material receiving body 10, such as but not limited to welding, clamping, bolt connection, etc., and of course, it can also be an integrated molding method.

[0079] With such a design, the input pipe 40 is introduced to facilitate the introduction of the filling medium into the connecting flow channel 332, so that the expansion ring 31 stably expands and deforms toward the inner ring 32, so that the expansion ring 31 contacts the impurity removal piece 20, thereby achieving stable impurity removal.

[0080] According to some embodiments of the present application, optionally, please refer to Figure 8 The impurity removal device 100 further includes a drain pipe 41 , which is located on a side of the material receiving body 10 facing away from the material receiving surface 12 and extends to the material receiving surface 12 . The input pipe 40 is sleeved outside the drain pipe 41 .

[0081] When the impurities on the impurity removal member 20 are removed by the impurity removal component 30, the impurities will enter the material receiving surface 12 and be uniformly discharged from the drainage pipe 41. The drainage pipe 41 is arranged on the side of the material receiving body 10 facing away from the material receiving surface 12, which can reduce the structure above the material receiving surface 12 and provide space for the up and down movement of the impurity removal member 20. At the same time, the input pipe 40 is sleeved outside the drainage pipe 41, so that the filling medium can be passed into the gap between the input pipe 40 and the drainage pipe 41, so that the filling medium enters the connecting flow channel 332.

[0082] Of course, in other embodiments, the inlet pipe 40 may also be provided separately from the sewage pipe 41 .

[0083] In this design, a drainage pipe 41 is arranged on the side of the material receiving body 10 facing away from the material receiving surface 12, so as to uniformly discharge impurities on the material receiving surface 12; at the same time, the structural arrangement above the material receiving surface 12 is reduced, and space is reserved for the movement of the debris removal component 20. In addition, the input pipe 40 is sleeved outside the drainage pipe 41, so that the distribution between the input pipe 40 and the drainage pipe 41 is more compact, and the space on the side of the material receiving body 10 facing away from the material receiving surface 12 is fully utilized.

[0084] According to some embodiments of the present application, optionally, please refer to Figure 8 The material receiving body 10 includes a material receiving body 14 and a support member 15 . The support member 15 penetrates the material receiving body 14 . The communication channel 332 is arranged in the material receiving body 14 . The support member 15 is provided with an opening 151 which is connected with the communication channel 332 and the through hole 11 respectively.

[0085] The material receiving body 14 is a hollow structure having a flow channel therein, and the connecting flow channel 332 is disposed in the material receiving body 14 so that the connecting flow channel 332 extends to the support member 15. Since the support member 15 is provided with an opening 151, the connecting flow channel 332 can be connected to the through hole 11 on the support member 15 through the opening 151.

[0086] With such a design, the material receiving body 10 is designed as a material receiving main body 14 and a support member 15, so that a connecting flow channel 332 is provided in the material receiving main body 14, so that the connecting flow channel 332 is connected with the through hole 11 in the support member 15, thereby making the impurity removal operation stable.

[0087] According to some embodiments of the present application, optionally, please refer to Fig. 9 The inner ring 32 is constructed so that a clearance 34 is provided between its inner wall and the debris removing member 20 when the expansion ring 31 is in an unexpanded state.

[0088] When the expansion ring 31 is in an unexpanded state, it does not expand and deform toward one side of the inner ring 32. At this time, the inner ring 32 is not contracted and is in an initial state. The size of the inner ring 32 in the initial state should be larger than the size of the debris removal member 20, so that the debris removal member 20 can move smoothly in the inner ring 32.

[0089] With such a design, a passing gap 34 is left between the inner ring 32 and the debris removing member 20 , so that the debris removing member 20 can move smoothly in the inner ring 32 , thereby enabling the debris removing operation to proceed smoothly.

[0090] According to some embodiments of the present application, optionally, please refer to Fig. 9 The minimum gap through the gap 34 is recorded as D, where 3mm≤D≤7mm.

[0091] The clearance through the gap 34 refers to the distance between the inner wall of the inner ring 32 and the impurity removal member 20. The size of the clearance 34 should not be set too small. If it is too small, the impurities adsorbed on the impurity removal member 20 are easily removed by the expansion ring 31 in advance during the process of moving up to the material connection surface 12, resulting in the impurities being unable to flow onto the material connection surface 12. Of course, the size of the clearance 34 should not be too large. If it is too large, the expansion ring 31 needs to expand and deform for a longer stroke, resulting in the amount of filling medium introduced, which increases the cost of impurity removal.

[0092] Therefore, the minimum value D of the clearance 34 can be between 3 mm and 7 mm, for example, but not limited to 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, etc. Specifically, in some embodiments, the impurity removal member 20 is a cylindrical structure, the inner ring 32 is a circular structure, and the difference between the radius of the inner ring 32 and the radius of the impurity removal member 20 is the minimum value of the clearance 34.

[0093] With such a design, the minimum clearance of the gap 34 is controlled between 3 mm and 7 mm, so that the debris removal piece 20 can stably pass through the inner ring 32, thereby making the debris removal operation stable; at the same time, it is also convenient to control the amount of filling medium introduced and reasonably control the cost of debris removal.

[0094] According to some embodiments of the present application, optionally, please refer to Figure 2 and Figure 7 The through holes 11 and the expansion ring 31 each include a plurality of through holes 11 , all of the through holes 11 are arranged at intervals on the material receiving body 10 , and at least one expansion ring 31 is arranged in each of the through holes 11 .

[0095] The perforations 11 are arranged at intervals on the material receiving body 10, so that when removing impurities, each impurity removing member 20 can be inserted into the corresponding perforation 11 respectively, so that multiple impurity removing members 20 can be used simultaneously, thereby improving the impurity removing efficiency.

[0096] Such a design introduces a plurality of perforations 11 and expansion rings 31, so as to facilitate multiple impurity removal operations at the same time and improve the impurity removal efficiency.

[0097] According to some embodiments of the present application, optionally, please refer to Figure 2 The impurity removal device 100 further includes a cleaning component 60 . A discharge port 13 is provided on the material receiving surface 12 . The cleaning component 60 is used to clean the impurities on the material receiving surface 12 into the discharge port 13 .

[0098] The cleaning component 60 refers to a device that can clean impurities on the receiving surface 12 into the discharge port 13. There are various ways to clean it, such as: using a scraper or other structure to clean impurities on the receiving surface 12 into the discharge port 13; or, cleaning impurities into the discharge port 13 by blowing and / or spraying water.

[0099] With such a design, the cleaning assembly 60 is introduced to facilitate the unified cleaning of the scraped impurities into the discharge port 13, thereby facilitating the unified treatment of the impurities.

[0100] According to some embodiments of the present application, optionally, please refer to Figure 2 The cleaning assembly 60 includes a delivery pipe 61 and a nozzle 62 connected to the delivery pipe 61 , and the nozzle 62 is located above the material receiving surface 12 .

[0101] Liquid or gas can be passed into the delivery pipe 61, so that the nozzle 62 can spray liquid or gas onto the material receiving surface 12. The delivery pipe 61 can be fixed on the material receiving body 10 above the material receiving surface 12, so that the nozzle 62 can be conveniently located above the material receiving surface 12. At the same time, in order to achieve circumferential cleaning, the delivery pipe 61 can be extended along the circumference of the material receiving surface 12, and a plurality of nozzles 62 are arranged on the delivery pipe 61 at intervals. In addition, in order to facilitate the stable fixation of the delivery pipe 61 on the material receiving body 10, an annular groove can be provided on the material receiving body 10, and the delivery pipe 61 is stuck in the annular groove.

[0102] The number of the conveying pipe 61 can be one or more. When the number of the conveying pipe 61 is more than one, all the conveying pipes 61 can be distributed in sequence along the thickness direction X of the material receiving body 10 .

[0103] With such a design, the delivery pipe 61 and the nozzle 62 are introduced to facilitate the cleaning of the material surface 12 and provide a cleaning effect.

[0104] According to some embodiments of the present application, optionally, please refer to Figure 1 The impurity removing device 100 includes a cavity 50 , and the circumferential sealing of the material receiving body 10 is connected to the cavity wall of the cavity 50 .

[0105] The cavity 50 refers to a structure with a space inside, which can accommodate slurry. In this way, when removing impurities, the impurity removal member 20 can be moved into the cavity 50 so that the impurity removal member 20 can adsorb and remove impurities from the slurry in the cavity 50. In addition, please refer to Figure 5 In order to improve the sealing between the material receiving body 10 and the cavity 50 , a sealing ring 16 may be provided between the material receiving body 10 and the cavity 50 .

[0106] With such a design, the cavity 50 is introduced to facilitate accommodating the slurry, so that the impurity removal operation can be carried out more smoothly.

[0107] According to some embodiments of the present application, optionally, the impurity removing device 100 further includes a driving assembly, and the driving assembly is used to drive the impurity removing member 20 to move in the perforation 11 along the thickness direction X of the material receiving body 10 .

[0108] The driving assembly refers to a device that can provide power for the movement of the debris removal component 20, which can be but not limited to a cylinder, a hydraulic cylinder, an electric cylinder, etc., or a combination of a motor and a transmission mechanism, such as a combination of a motor and a screw slider, a combination of a motor and a gear rack, etc.

[0109] It should be noted that the moving speed of the impurity removing component 20 may not be faster than 1.5 m / s. If the speed is too fast, since the slurry is a viscous fluid with poor fluidity, the expansion ring 31 drives the slurry to leave the impurity removing component 20 by setting a clamping force. The faster speed causes the slurry to "ride" on the slurry before it has time to flow, causing the expansion ring 31 to separate from the surface of the impurity removing component 20, resulting in the expansion ring 31 losing friction instantly and "drifting".

[0110] With such a design, a driving component is introduced to enable the debris removal member 20 to move automatically, thereby improving the automation of the debris removal operation and being beneficial to improving the debris removal efficiency.

[0111] According to some embodiments of the present application, the present application provides a battery production system, and the battery production system includes any one of the above impurity removal devices 100.

[0112] According to some embodiments of this application, please refer to Figures 1 to 9 The present application provides a debris removal device 100, which includes a cavity 50, a material receiving body 10, a debris removal piece 20 and an expansion ring 31. The material receiving body 10 is embedded in the cavity 50, and the material receiving body 10 is provided with a through hole 11 and a material receiving surface 12 located on the periphery of the through hole 11. The expansion ring 31 is arranged in the through hole 11, and the expansion ring 31 has an inner ring 32, and the debris removal piece 20 is slidably penetrated in the inner ring 32. In some embodiments, an expansion gap 313 may be formed between the expansion ring 31 and the through hole 11, and a filling medium is passed into the expansion gap 313, so that the expansion ring 31 expands and deforms toward the side of the inner ring 32, so that the expansion ring 31 contacts the debris removal piece 20. In other embodiments, the expansion ring 31 may be designed to have an expansion cavity 314 inside, and after the filling medium is passed into the expansion cavity 314, it may expand toward the side of the inner ring 32.

[0113] The specific impurity removal steps can be as follows: the expansion ring 31 releases compressed air, the expansion ring 31 returns to its original size, and allows the impurity removal piece 20 to pass; the magnetic material is adsorbed on the impurity removal piece 20, and the impurity removal piece 20 adhered to the magnetic particle slurry rises through the expansion ring 31; the cylinder rises to the upper limit, and the impurity removal piece 20 is completely separated from the cylinder body; the impurity removal piece 20 rises and leaves the cavity 50 and stops at the upper limit of the cylinder, and the normal slurry weight slides back into the cavity 50; compressed air is introduced into the expansion ring 31, and the inner diameter of the expansion ring 31 shrinks and tightly holds the impurity removal piece 20; the cylinder descends, and the impurity removal piece 20 follows the decline, and the slurry adhering to the impurity removal piece 20 is pulled off when the expansion ring 31 holds the impurity removal piece 20 tightly; the impurity removal piece 20 descends to the closed loop position of the equipment, the equipment is locked, the expansion ring 31 is in an inflated state, and the equipment is running.

[0114] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A de-impurity device, characterized in that: The impurity removal device comprises: An impurity removal element (20) for absorbing impurities in the slurry; The material receiving body (10) is provided with a through hole (11) along the thickness direction (X) thereof, and the material receiving body (10) includes a material receiving surface (12) located at the periphery of the through hole (11), and the impurity removing member (20) is slidably arranged in the through hole (11); The impurity removing device further comprises an impurity removing component (30) arranged on the material receiving body (10), the impurity removing component (30) is at least partially arranged around the periphery of the impurity removing member (20), and the impurity removing component (30) is configured to be able to contact the impurity removing member (20) under the action of an external force.

2. The impurity removal device according to claim 1, characterized in that: The debris removing component (30) comprises an expansion ring (31) having an inner ring (32), wherein the expansion ring (31) is arranged in the through hole (11), and the debris removing piece (20) is slidably inserted into the inner ring (32). Under the action of an external force, the expansion ring (31) can expand and deform toward the inner ring (32) and contact the debris removing piece (20).

3. The impurity removal device according to claim 2, characterized in that: The debris removing component (30) further comprises a conducting structure (33), which is arranged in the material receiving body (10) and is used to introduce a filling medium into the interior of the expansion ring (31) or to the side facing away from the inner ring (32), so that the expansion ring (31) expands toward the inner ring (32) and contacts the debris removing component (20).

4. The impurity removal device according to claim 3, characterized in that: An expansion cavity (314) extending around the outer circumference of the inner ring (32) is provided in the expansion ring (31), and the conduction structure (33) comprises a connecting pipe (331), wherein the connecting pipe (331) is provided in the material receiving body (10) and is connected to the expansion cavity (314).

5. The impurity removal device according to claim 4, characterized in that: The material receiving body (10) comprises a material receiving body (14) and a support member (15), wherein the material receiving body (14) has a cavity (144), the support member (15) is arranged in the cavity (144) and penetrates the material receiving body (14) along the thickness direction (X) of the material receiving body (10), the through hole (11) is penetrated by the support member (15), the material receiving surface (12) is arranged on a surface of the material receiving body (14) facing away from the cavity (144), and the connecting pipe (331) is arranged in the cavity (144) and passes through the side of the support member (15) to communicate with the expansion chamber (314).

6. The impurity removal device according to claim 5, characterized in that: The material receiving body (14) comprises a bottom plate (141), a cover plate (142) and a surrounding edge (143); the bottom plate (141) and the surrounding edge (143) are arranged in the surrounding edge (143) at intervals to enclose the cavity (144); the support member (15) is arranged in the cavity (144) and passes through the bottom plate (141) and the cover plate (142); the material receiving surface (12) is arranged on a surface of the cover plate (142) facing away from the cavity (144).

7. The impurity removal device according to claim 3, characterized in that: The conducting structure (33) comprises a connecting flow channel (332) arranged in the material receiving body (10), an expansion gap (313) is formed between the expansion ring (31) and the inner wall of the through hole (11), and the connecting flow channel (332) is connected to the expansion gap (313).

8. The impurity removal device according to claim 7, characterized in that: The expansion ring (31) comprises a main body (311) and sleeve portions (312) provided at two ends of the main body (311); the two sleeve portions (312) are respectively sleeved at the two ends of the main body (311); and the expansion gap (313) is formed between the main body (311) and the inner wall of the through hole (11).

9. The impurity removal device according to claim 7, characterized in that: The impurity removal device further comprises an input pipe (40), wherein the input pipe (40) is arranged on a side of the material receiving body (10) facing away from the material receiving surface (12) and is connected to the communication channel (332).

10. The impurity removal device according to claim 9, characterized in that: The impurity removal device further comprises a sewage discharge pipe (41), the sewage discharge pipe (41) being located on a side of the material receiving body (10) facing away from the material receiving surface (12) and extending onto the material receiving surface (12), and the input pipe (40) being sleeved outside the sewage discharge pipe (41).

11. The impurity removal device according to claim 7, characterized in that: The material receiving body (10) comprises a material receiving body (14) and a support member (15); the support member (15) penetrates the material receiving body (14); the connecting flow channel (332) is arranged in the material receiving body (14); and the support member (15) is provided with an opening (151) which is respectively connected to the connecting flow channel (332) and the through hole (11).

12. The impurity removal device according to any one of claims 2 to 11, characterized in that: The inner ring (32) is constructed so that when the expansion ring (31) is in an unexpanded state, an inner wall thereof has a passing gap (34) between the inner wall and the debris removing member (20).

13. The impurity removal device according to claim 12, characterized in that: The minimum gap value of the passing gap (34) is recorded as D, wherein 3mm≤D≤7mm.

14. The impurity removal device according to any one of claims 2 to 11, characterized in that: The through holes (11) and the expansion rings (31) are both multiple, all of the through holes (11) are arranged at intervals on the material receiving body (10), and at least one expansion ring (31) is arranged in each of the through holes (11).

15. The impurity removal device according to any one of claims 1 to 11, characterized in that: The impurity removal device further comprises a cleaning component (60), a discharge port (13) is provided on the material receiving surface (12), and the cleaning component (60) is used to clean impurities on the material receiving surface (12) into the discharge port (13).

16. The impurity removal device according to claim 15, characterized in that: The cleaning assembly (60) comprises a delivery pipe (61) and a nozzle (62) connected to the delivery pipe (61), and the nozzle (62) is located above the material receiving surface (12).

17. The impurity removal device according to any one of claims 1 to 11, characterized in that: The impurity removal device comprises a cavity (50), and the circumferential sealing of the material receiving body (10) is connected to the cavity wall of the cavity (50).

18. The impurity removal device according to any one of claims 1 to 11, characterized in that: The impurity removing device further comprises a driving assembly, wherein the driving assembly is used to drive the impurity removing member (20) to move in the perforation (11) along the thickness direction (X) of the material receiving body (10).

19. A battery production system, characterized in that: The battery production system comprises the impurity removal device according to any one of claims 1-18.

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