Demagnetizing device and battery production equipment

Abstract

The utility model relates to a demagnetizing device and battery production equipment, and the demagnetizing device comprises an adsorption part which extends along a preset direction; the material conveying pipeline is arranged on at least part of the periphery of the adsorption part in a bent mode in the direction intersecting with the preset direction and extends in the preset direction; wherein the material conveying pipeline is used for conveying slurry, and the adsorption part is used for adsorbing magnetic particles in the slurry. When the slurry flows in the material conveying pipeline, the slurry flows along at least part of the circumferential direction of the adsorption part and flows along the preset direction in the spiral path, on one hand, the overall flowing path of the slurry can be increased, so that the contact area between the slurry and the adsorption part is increased, and the demagnetizing efficiency is improved; and on the other hand, the spiral flow path can disturb the laminar flow mode of the slurry, so that the probability that the magnetic particles in the slurry are adsorbed and captured by the adsorption piece is improved, and the demagnetizing efficiency is further improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a demagnetization device and battery production equipment. Background Art

[0002] In the production process of battery cells, the stability and uniformity of the slurry are important factors affecting the performance of the battery cells. The slurry usually contains magnetic particles such as ferromagnetic impurities, which have a great impact on the discharge and safety performance of the battery cells. Therefore, before applying the slurry, the slurry needs to be demagnetized to remove the magnetic particles in the slurry.

[0003] However, currently in the process of demagnetizing the slurry, the removal efficiency of the magnetic particles is often low, resulting in poor demagnetization effect of the slurry. Utility Model Content

[0004] Based on this, it is necessary to provide a demagnetization device and battery production equipment to address the problems of low demagnetization efficiency and poor demagnetization effect in the current slurry demagnetization process.

[0005] In a first aspect, the present application provides a demagnetization device, comprising:

[0006] The adsorption member is extended along a preset direction; and

[0007] A material delivery pipeline is bent and extended along a preset direction and is arranged on at least a portion of the periphery of the adsorbent;

[0008] The conveying pipeline is used for conveying slurry, and the adsorbent is used for adsorbing magnetic particles in the slurry.

[0009] Through the above structure, the slurry flows along a spiral path in the conveying pipeline. On the one hand, the overall flow path of the slurry can be increased to increase the contact area between the slurry and the adsorbent, thereby improving the demagnetization efficiency. On the other hand, the spiral flow path can disturb the laminar flow of the slurry to increase the probability that the magnetic particles in the slurry are adsorbed and captured by the adsorbent, thereby further improving the demagnetization efficiency.

[0010] In some embodiments, the material delivery pipeline extends along a preset direction and is wrapped around the outer circumference of the adsorption component.

[0011] In this way, the contact area between the slurry in the conveying pipeline and the adsorbent can be further increased, and the flow of the slurry can be further disturbed, thereby increasing the probability that the magnetic particles in the slurry are adsorbed and captured by the adsorbent, further improving the demagnetization efficiency.

[0012] In some embodiments, the inner diameter of the feed pipe ranges from 0.5 cm to 10 cm.

[0013] Therefore, setting the inner diameter of the conveying pipeline to the above range can take into account the slurry conveying efficiency and the distance between the adsorbent and the magnetic particles, thereby improving the demagnetization efficiency of the slurry.

[0014] In some embodiments, the ratio between the pipe wall thickness of the material conveying pipe and the inner diameter of the material conveying pipe is in the range of 0.01:5 to 0.1:5.

[0015] Furthermore, the ratio between the pipe wall thickness of the feed conveying pipe and the inner diameter of the feed conveying pipe is in the range of 0.03:5 to 0.07:5.

[0016] Therefore, setting the ratio range between the pipe wall thickness of the feed pipe and the inner diameter of the feed pipe to the above range can effectively improve the adsorption effect of the adsorbent on the magnetic particles.

[0017] In some embodiments, the ratio between the length of the feed pipe and the length of the adsorbent is in the range of 20:1 to 5:1.

[0018] Furthermore, the ratio between the length of the feed pipe and the length of the adsorbent is in the range of 15:1 to 10:1.

[0019] Therefore, setting the ratio between the length of the feed pipeline and the length of the adsorbent to the above range can effectively increase the contact area between the slurry in the feed pipeline and the adsorbent, and improve the adsorption effect of the adsorbent on the magnetic particles.

[0020] In some embodiments, the adsorption member includes a magnetic member extending along a preset direction, and the material delivery pipeline extends along the preset direction and is wound around the outer circumference of the magnetic member;

[0021] The magnetic part is used to absorb the magnetic particles in the slurry.

[0022] By providing a magnetic component, the magnetic particles in the slurry can be adsorbed, thereby smoothly achieving the demagnetization treatment of the slurry.

[0023] In some embodiments, the magnetic member has an adsorption state and a release state;

[0024] When the magnetic member is in an adsorption state, the magnetic member is configured to apply an adsorption force to the magnetic particles in the slurry to adsorb the magnetic particles;

[0025] When the magnetic member is in a released state, the magnetic member is configured to cancel the adsorption force applied to the magnetic particles to release the magnetic particles.

[0026] Through the adsorption and release states of the magnetic parts, not only can the magnetic particles be adsorbed to demagnetize the slurry, but also the magnetic particles can be made to fall off from the inner wall of the conveying pipe after the demagnetization treatment is completed, so as to facilitate the cleaning of the magnetic particles in the conveying pipe.

[0027] In some embodiments, the demagnetization device further includes a control component, which is connected to the magnetic component and is used to control the magnetic component to switch between an adsorption state and a release state.

[0028] By setting the control element, the magnetic element can be better controlled to switch smoothly between the adsorption state and the release state, thereby achieving the adsorption or release of the magnetic particles.

[0029] In some embodiments, the demagnetization device further includes a cleaning component connected to the material delivery pipeline, and the cleaning component is configured to be able to pass a cleaning medium for cleaning magnetic particles into the material delivery pipeline when the magnetic component is in a released state.

[0030] By providing a cleaning piece and matching the cleaning piece with the release state of the magnetic piece, the material conveying pipeline can be automatically cleaned and the operation efficiency can be improved.

[0031] In some embodiments, the demagnetization device further includes an electromagnetic pipe, which is arranged around the outer periphery of the magnetic member along a direction intersecting with the preset direction and is spaced from the magnetic member to form a receiving gap, and the material delivery pipe is located in the receiving gap;

[0032] Among them, the electromagnetic pipe is used to provide the electromagnetic field.

[0033] By setting up the electromagnetic pipe, not only the magnetic field strength of the magnetic part can be enhanced, but also the magnetic field strength can be adjusted so that the magnetic part can better absorb the magnetic particles and improve the demagnetization efficiency.

[0034] In a second aspect, the present application also provides a battery production device, comprising the demagnetization device as described above, the demagnetization device is used to remove magnetic particles in battery slurry.

[0035] The above-mentioned demagnetization device and battery production equipment bend the feed pipeline to at least part of the outer periphery of the adsorbent, and extend the feed pipeline along a preset direction. When the slurry flows in the feed pipeline, the slurry flows along at least part of the circumference of the adsorbent, and flows in a spiral path along the preset direction. On the one hand, the overall flow path of the slurry can be increased to increase the contact area between the slurry and the adsorbent, thereby improving the demagnetization efficiency; on the other hand, the spiral flow path can disturb the laminar flow of the slurry to increase the probability of the magnetic particles in the slurry being adsorbed and captured by the adsorbent, thereby further improving the demagnetization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG. 1 is a perspective schematic diagram of a demagnetization device according to one or more embodiments.

[0037] FIG. 2 is a schematic structural diagram of a demagnetization device according to one or more embodiments.

[0038] FIG. 3 is a schematic cross-sectional view of a material conveying pipeline in a demagnetization device according to one or more embodiments.

[0039] FIG. 4 is a schematic structural diagram of a demagnetization device according to one or more embodiments.

[0040] Explanation of the reference numerals: 100, demagnetizing device; 10, adsorption member; 20, material conveying pipeline; 30, electromagnetic pipeline; 40, accommodation gap; 11, magnetic member; a, preset direction. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries 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 and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0048] The battery is composed of one or more battery cells. For each battery, the battery cells that make up the battery can be connected in series, in parallel, or in mixed connection. Mixed connection means that the battery cells are connected in series and in parallel.

[0049] A battery cell is the smallest unit that makes up a battery. The structure of a battery cell includes a shell, an electrolyte, and an electrode assembly. The electrode assembly is the part that undergoes electrochemical reactions in the battery cell. The electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator. Both the positive electrode sheet and the negative electrode sheet are formed by coating a slurry on a substrate. By coating the slurry, the electrode assembly can smoothly undergo an electrochemical reaction.

[0050] However, the slurry usually contains magnetic particles, such as ferromagnetic impurities or other magnetic particles. After the slurry is coated on a substrate and assembled to form an electrode assembly, the magnetic particles in the slurry will have a significant impact on the discharge and safety performance of the electrode assembly or battery cell, affecting the performance of the battery.

[0051] Based on this, it is necessary to demagnetize the slurry before coating the slurry to remove the magnetic particles in the slurry.

[0052] Currently, when demagnetizing slurry, the slurry is usually passed into a sleeve provided with a magnetic rod. When the slurry flows in the sleeve, the magnetic particles can be adsorbed onto the magnetic rod, thereby achieving demagnetization of the slurry.

[0053] However, in this demagnetization method, on the one hand, the flow of the slurry in the sleeve is laminar flow, and the distance between the magnetic particles in the slurry and the magnetic rod is relatively fixed, and usually far away, making it difficult for the magnetic rod to adsorb the magnetic particles, resulting in poor demagnetization efficiency and demagnetization effect. On the other hand, due to the high flow speed of the slurry in the sleeve, the contact area between the slurry and the magnetic rod is small, and the contact time is short, which also leads to poor demagnetization efficiency and demagnetization effect.

[0054] Based on the above considerations, in order to solve the problems of low demagnetization efficiency and poor demagnetization effect in the current demagnetization process of slurry, a demagnetization device is provided in one or more embodiments of the present application, in which a feed pipeline is bent and arranged at least partially on the periphery of the adsorbent, and the feed pipeline is extended along a preset direction. When the slurry flows in the feed pipeline, the slurry flows along at least partially the circumference of the adsorbent, and flows in a spiral path along the preset direction. On the one hand, the overall flow path of the slurry can be increased to increase the contact area between the slurry and the adsorbent, thereby improving the demagnetization efficiency. On the other hand, the spiral flow path can disturb the laminar flow of the slurry to increase the probability that the magnetic particles in the slurry are adsorbed and captured by the adsorbent, thereby further improving the demagnetization efficiency.

[0055] 1 and 2, an embodiment of the present application provides a demagnetization device 100, including an adsorbent 10 and a conveying pipe 20, wherein the adsorbent 10 is extended along a preset direction a, and the conveying pipe 20 is bent and extended along the preset direction a and is arranged at least partially around the adsorbent 10. The conveying pipe 20 is used to convey slurry, and the adsorbent 10 is used to adsorb magnetic particles in the slurry.

[0056] It should be noted that the demagnetization device 100 refers to a device that can perform demagnetization treatment on battery slurry to remove magnetic particles in the slurry. The demagnetization device 100 includes an adsorbent 10 and a feed pipe 20, wherein the feed pipe 20 refers to a component that can transport the slurry, and the feed pipe 20 is hollow inside and has a feed inlet and a feed outlet. The slurry flows into the feed pipe 20 from the feed inlet and flows out of the feed pipe 20 from the feed outlet.

[0057] The adsorbent 10 is a component capable of adsorbing magnetic particles in the slurry. The adsorbent 10 is extended along a preset direction a, that is, the preset direction a is the longitudinal direction of the adsorbent 10. The feed pipe 20 is bent along a direction intersecting the preset direction a and arranged at least partially around the periphery of the adsorbent 10, and the feed pipe 20 is extended along the preset direction a, that is, the feed pipe 20 is arranged in a spiral shape around the adsorbent 10.

[0058] Thus, after the slurry is passed into the feeding pipe 20 from the feeding port, it flows toward the discharging port in the feeding pipe 20. At the same time, the adsorbent 10 can adsorb the magnetic particles in the slurry, so that the magnetic particles adhere to the inner wall of the feeding pipe 20, while the slurry continues to flow toward the discharging port, thereby achieving demagnetization of the slurry.

[0059] Under the action of the conveying pipe 20, the slurry flows in a spiral path, which, on the one hand, can increase the overall flow path of the slurry, thereby increasing the contact area between the slurry and the adsorbent 10 and improving the demagnetization efficiency. On the other hand, the spiral flow path can disturb the laminar flow of the slurry, thereby increasing the probability that the magnetic particles in the slurry are adsorbed and captured by the adsorbent 10, further improving the demagnetization efficiency.

[0060] Through the above structure, the slurry flows along the spiral path in the conveying pipe 20. On the one hand, the overall flow path of the slurry can be increased to increase the contact area between the slurry and the adsorbent 10, thereby improving the demagnetization efficiency. On the other hand, the spiral flow path can disturb the laminar flow of the slurry to increase the probability that the magnetic particles in the slurry are adsorbed and captured by the adsorbent 10, thereby further improving the demagnetization efficiency.

[0061] In some embodiments, the material delivery pipeline 20 extends along a preset direction a and is wound around the outer circumference of the adsorption component 10 .

[0062] Specifically, the material delivery pipeline 20 is disposed around the outer periphery of the adsorbent 10 along a direction intersecting the preset direction a, and is extended along the preset direction a, so that the material delivery pipeline 20 is disposed around the outer periphery of the adsorbent 10 in a spiral shape.

[0063] In this way, the contact area between the slurry in the delivery pipeline 20 and the adsorbent 10 can be further increased, and the flow of the slurry can be further disturbed, thereby increasing the probability of the magnetic particles in the slurry being adsorbed and captured by the adsorbent 10, further improving the demagnetization efficiency.

[0064] Furthermore, the material of the feed pipe 20 may be, but is not limited to, plastic, rubber, ceramic, glass or aluminum alloy.

[0065] In addition, it should be noted that the feed pipe 20 can be provided as one or more. When the feed pipe 20 is provided as more than one, the multiple feed pipes 20 can be respectively arranged on the periphery of the adsorbent 10 in a spiral shape, or can be arranged around the periphery of the adsorbent 10 in a double helix or multi-helix structure, so as to achieve a disturbing effect on the slurry inside the feed pipe 20.

[0066] Please refer to FIG. 2 and FIG. 3 . In some embodiments, the inner diameter R of the material delivery pipe 20 ranges from 0.5 cm to 10 cm.

[0067] The slurry is transported through the conveying pipe 20. The inner diameter of the conveying pipe 20 will affect the conveying efficiency of the slurry and the distance between the magnetic particles in the slurry and the adsorbent 10, thereby affecting the demagnetization efficiency of the slurry.

[0068] Specifically, the larger the inner diameter of the feed pipe 20 is, the more slurry can be accommodated in the feed pipe 20 . At this time, the slurry transportation efficiency is higher, but the distance between some magnetic particles in the slurry and the adsorption element 10 may be relatively far, which will affect the adsorption effect of the adsorption element 10 on the magnetic particles.

[0069] The smaller the inner diameter of the conveying pipe 20 is, the less slurry can be contained in the conveying pipe 20 , and the slurry conveying efficiency is lower, but the distance between the magnetic particles in the slurry and the adsorption element 10 is closer, which can improve the adsorption effect of the magnetic particles.

[0070] Preferably, the inner diameter of the feed pipe 20 can be set to a range of 2.5 cm to 8 cm. Specifically, the inner diameter of the feed pipe 20 can be set to, but not limited to, 0.5 cm, 2.5 cm, 5 cm, 8 cm, and 10 cm, wherein the specific value of the inner diameter of the feed pipe 20 can be adjusted according to actual production requirements, which will not be described in detail here.

[0071] Based on this, setting the inner diameter of the conveying pipe 20 to the above range can take into account the slurry conveying efficiency and the distance between the adsorbent 10 and the magnetic particles, thereby improving the demagnetization efficiency of the slurry.

[0072] In some embodiments, the ratio between the pipe wall thickness d of the material conveying pipe 20 and the inner diameter R of the material conveying pipe 20 is in the range of 0.01:5 to 0.1:5.

[0073] Furthermore, the ratio between the pipe wall thickness d of the feed pipe 20 and the inner diameter R of the feed pipe 20 is in the range of 0.03:5 to 0.07:5.

[0074] Specifically, the wall thickness of the conveying pipeline 20 will directly affect the distance between the adsorbent 10 and the magnetic particles, thereby affecting the adsorption effect of the adsorbent 10 on the magnetic particles.

[0075] As some specific embodiments, the ratio between the pipe wall thickness of the feed pipe 20 and the inner diameter of the feed pipe 20 can be set to 0.01:5, 0.03:5, 0.05:5, 0.07:5, 0.1:5. The specific ratio can be adjusted according to actual production needs so that the adsorption effect of the adsorption component 10 on the magnetic particles can achieve the best effect, which will not be elaborated here.

[0076] Based on this, setting the ratio range between the pipe wall thickness of the feed pipe 20 and the inner diameter of the feed pipe 20 to the above range can effectively improve the adsorption effect of the adsorption component 10 on the magnetic particles.

[0077] In some embodiments, the ratio between the length of the feed pipe 20 and the length of the adsorbent 10 is in the range of 20:1 to 5:1.

[0078] Furthermore, the ratio between the length of the feed pipe 20 and the length of the adsorbent 10 is in the range of 15:1 to 10:1.

[0079] Specifically, the relationship between the length of the feed pipeline 20 and the length of the adsorbent 10 will affect the number of times the feed pipeline 20 wraps around the outer circumference of the adsorbent 10, thereby affecting the contact area between the slurry in the feed pipeline 20 and the adsorbent 10, and affecting the adsorption effect of the adsorbent 10 on the magnetic particles.

[0080] As some specific embodiments, the ratio between the length of the feed pipeline 20 and the length of the adsorbent 10 can be set to 20:1, 15:1, 10:1, or 5:1. The specific ratio can be adjusted according to actual production needs so that the adsorbent 10 can achieve the best adsorption effect on the magnetic particles, which will not be elaborated here.

[0081] Therefore, setting the ratio between the length of the feed pipe 20 and the length of the adsorbent 10 to the above range can effectively increase the contact area between the slurry in the feed pipe 20 and the adsorbent 10, and improve the adsorption effect of the adsorbent 10 on the magnetic particles.

[0082] In some embodiments, the adsorbent 10 includes a magnetic member 11 extending along a preset direction a, and the conveying pipeline 20 extends along the preset direction a and is wound around the outer periphery of the magnetic member 11. The magnetic member 11 is used to adsorb magnetic particles in the slurry.

[0083] Specifically, the magnetic member 11 refers to a component that can provide adsorption force to adsorb magnetic particles in the slurry, and the magnetic member 11 can be, but is not limited to, a magnetic bar or a magnetizable metal structure. In addition, the magnetic member 11 can be, but is not limited to, a cylindrical, conical, or cubic shape.

[0084] The material delivery pipe 20 is arranged around the outer circumference of the magnetic member 11 and extends along the longitudinal direction of the magnetic member 11, that is, the material delivery pipe 20 is arranged spirally wound around the outer circumference of the magnetic member 11. The material delivery pipe 20 can be in contact with the magnetic member 11, that is, in a direction perpendicular to the preset direction a, the distance between the outer surface of the material delivery pipe 20 and the outer surface of the magnetic member 11 is zero.

[0085] As a result, the conveying pipeline 20 is in close contact with the magnetic member 11 , which reduces the distance between the magnetic particles in the slurry and the magnetic member 11 , and can effectively improve the adsorption effect of the magnetic member 11 on the magnetic particles.

[0086] By providing the magnetic member 11, the magnetic particles in the slurry can be adsorbed, thereby smoothly achieving the demagnetization treatment of the slurry.

[0087] In some embodiments, the magnetic member 11 has an adsorption state and a release state. When the magnetic member 11 is in the adsorption state, the magnetic member 11 is configured to apply an adsorption force to the magnetic particles in the slurry to adsorb the magnetic particles. When the magnetic member 11 is in the release state, the magnetic member 11 is configured to cancel the adsorption force applied to the magnetic particles to release the magnetic particles.

[0088] Specifically, the adsorption state of the magnetic member 11 refers to the state in which the magnetic member 11 has adsorption force and can adsorb magnetic particles. The release state of the magnetic member 11 refers to the state in which the magnetic member 11 has no adsorption force and cannot adsorb magnetic particles.

[0089] The magnetic member 11 can switch between the adsorption state and the release state under the action of external force. When the slurry is passed into the feeding pipe 20, the magnetic member 11 is switched to the adsorption state, and the magnetic member 11 applies an adsorption force to the magnetic particles, adsorbing the magnetic particles to the inner wall of the feeding pipe 20. At this time, the slurry continues to flow in the feeding pipe 20 toward the discharge port, thereby achieving the separation of the slurry and the magnetic particles.

[0090] When the demagnetization operation is completed, stop feeding the slurry into the feed pipe 20. At this time, the magnetic member 11 is switched from the adsorption state to the release state. The magnetic member 11 cancels the adsorption force applied to the magnetic particles, causing the magnetic particles to fall off the inner wall of the feed pipe 20, so as to facilitate the cleaning of the magnetic particles in the feed pipe 20.

[0091] Through the adsorption and release states of the magnetic part 11, not only can the magnetic particles be adsorbed to demagnetize the slurry, but also the magnetic particles can be made to fall off from the inner wall of the conveying pipe 20 after the demagnetization treatment is completed, so as to facilitate the cleaning of the magnetic particles in the conveying pipe 20.

[0092] In some embodiments, the demagnetization device 100 further includes a control component (not shown in the figure), which is connected to the magnetic component 11 and is used to control the magnetic component 11 to switch between an adsorption state and a release state.

[0093] Specifically, the control component may include a power supply, and the power supply is electrically connected to the magnetic component 11 . By controlling the switch of the power supply, the power on and off of the magnetic component 11 can be achieved.

[0094] When the magnetic member 11 is powered on, the magnetic member 11 is magnetic, that is, the magnetic member 11 is in an adsorption state, and the magnetic member 11 can adsorb the magnetic particles in the slurry. When the magnetic member 11 is powered off, the magnetic member 11 is not magnetic, that is, the magnetic member 11 is in a release state, and the magnetic member 11 releases the magnetic particles, so that the magnetic particles can fall off from the inner wall of the conveying pipe 20, so as to facilitate the cleaning of the magnetic particles.

[0095] It is understandable that in some other embodiments, the control member may also include other structures, such as a blocking member, which blocks the magnetism of the magnetic member 11 by moving the blocking member between the magnetic member 11 and the feed pipe 20. When the blocking member blocks the magnetic member 11, the magnetic member 11 is in a released state, and when the blocking member moves outside the magnetic member 11 and the feed pipe 20, the magnetic member 11 is in an adsorbed state, thereby switching the magnetic member 11 between the adsorbed state and the released state, which will not be described in detail here.

[0096] By providing the control element, the magnetic element 11 can be better controlled to switch smoothly between the adsorption state and the release state, thereby achieving the adsorption or release of the magnetic particles.

[0097] In some embodiments, the demagnetization device 100 also includes a cleaning component (not shown in the figure) connected to the feed pipeline 20, and the cleaning component is configured to be able to pass a cleaning medium for cleaning magnetic particles into the feed pipeline 20 when the magnetic component 11 is in a released state.

[0098] Specifically, the cleaning member can be set as a cleaning pipeline, and the cleaning pipeline is connected to the feed pipeline 20. When the demagnetization treatment operation of the slurry is completed, or when the adsorption amount of magnetic particles inside the feed pipeline 20 reaches a certain amount, the magnetic member 11 is first switched to the release state to make the magnetic particles on the inner wall of the feed pipeline 20 fall off. At this time, N-methylpyrrolidone (NMP) or other cleaning media is introduced into the feed pipeline 20 through the cleaning pipeline, and the magnetic particles in the feed pipeline 20 can be taken out under the flushing of the cleaning medium, thereby realizing the cleaning of the feed pipeline 20.

[0099] Furthermore, a detection component may be provided to detect the adsorption amount of magnetic particles inside the conveying pipeline 20 , and the detection component may be a magnetic analyzer.

[0100] By providing a cleaning piece and matching the cleaning piece with the release state of the magnetic piece 11, the material conveying pipeline 20 can be automatically cleaned, thereby improving the operation efficiency.

[0101] Please refer to FIG. 1 , FIG. 2 and FIG. 4 . In some embodiments, the demagnetization device 100 further includes an electromagnetic pipe 30, which is arranged around the outer periphery of the magnetic member 11 along a direction intersecting with the preset direction a, and is spaced from the magnetic member 11 to form a receiving gap 40, and the material conveying pipe 20 is located in the receiving gap 40. The electromagnetic pipe 30 is used to provide an electromagnetic field.

[0102] Specifically, the electromagnetic pipe 30 is a structure that can generate an electromagnetic field and adjust the magnetic field strength under the control of a power source. The electromagnetic pipe 30 is disposed around the outer periphery of the magnetic member 11, and a receiving gap 40 is formed between the electromagnetic pipe 30 and the magnetic member 11, and the material delivery pipe 20 is disposed in the receiving gap 40.

[0103] The electromagnetic field generated by the electromagnetic tube 30 can be superimposed on the magnetic field of the magnetic member 11, and can be used to enhance the magnetic field strength of the magnetic member 11. In addition, the electromagnetic tube 30 can also adjust the magnetic field strength so that the magnetic member 11 can better absorb the magnetic particles.

[0104] By providing the electromagnetic pipe 30, not only the magnetic field strength of the magnetic component 11 can be enhanced, but also the magnetic field strength can be adjusted so that the magnetic component 11 can better absorb magnetic particles and improve the demagnetization efficiency.

[0105] Based on the same concept as the above-mentioned demagnetization device 100, the present application also provides a battery production device, including the above-mentioned demagnetization device 100, which is used to remove magnetic particles in battery slurry.

[0106] According to one or more embodiments, slurry is introduced into the feeding pipe 20 from the feeding port, and the magnetic member 11 is energized to be in an adsorption state. The slurry flows in the feeding pipe 20 in a spiral shape around the periphery of the magnetic member 11, and at the same time, the magnetic member 11 adsorbs the magnetic particles in the slurry.

[0107] Among them, since the flow path of the slurry is spiral, the slurry is disturbed, so that the magnetic particles in the slurry can approach the magnetic member 11 at different positions, so as to be adsorbed and captured by the magnetic member 11. In this way, the magnetic particles in the slurry can be removed more thoroughly.

[0108] Furthermore, when the slurry flows along the spiral path, the contact area between the slurry and the magnetic member 11 is increased, thereby further improving the demagnetization efficiency.

[0109] When the demagnetization process is completed, or when the adsorption amount of magnetic particles in the conveying pipe 20 reaches a certain amount, the slurry is stopped from being transported into the conveying pipe 20, and the magnetic member 11 is powered off. At this time, the magnetic member 11 switches from the adsorption state to the release state, and the magnetic particles fall off the inner wall of the conveying pipe 20.

[0110] At the same time, a cleaning medium is introduced into the material delivery pipeline 20 , and the magnetic particles inside the material delivery pipeline 20 are taken away by the flushing action of the cleaning medium, so that the material delivery pipeline 20 is automatically cleaned.

[0111] 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.

[0112] 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 demagnetization device, characterized in that: include: The adsorption member is extended along a preset direction; and A material delivery pipeline, which is bent and extends along the preset direction and is arranged on at least a portion of the periphery of the adsorbent; Wherein, the conveying pipeline is used for conveying slurry, and the adsorbent is used for adsorbing magnetic particles in the slurry.

2. The demagnetization device according to claim 1, characterized in that: The material delivery pipeline extends along the preset direction and is wound around the outer circumference of the adsorption component.

3. The demagnetization device according to claim 1, characterized in that: The inner diameter of the feed conveying pipeline ranges from 0.5 cm to 10 cm.

4. The demagnetization device according to claim 1, characterized in that: The ratio between the pipe wall thickness of the feed pipe and the inner diameter of the feed pipe is in the range of 0.01:5 to 0.1:

5.

5. The demagnetization device according to claim 4, characterized in that: The ratio between the pipe wall thickness of the material conveying pipe and the inner diameter of the material conveying pipe is in the range of 0.03:5 to 0.07:

5.

6. The demagnetization device according to claim 1, characterized in that: The ratio of the length of the feed conveying pipeline to the length of the adsorbent is in the range of 20:1 to 5:

1.

7. The demagnetization device according to claim 6, characterized in that: The ratio of the length of the feed conveying pipeline to the length of the adsorbent is in the range of 15:1 to 10:

1.

8. The demagnetization device according to any one of claims 1 to 7, characterized in that: The adsorption member includes a magnetic member extending along the preset direction, and the material delivery pipeline extends along the preset direction and is wound around the outer circumference of the magnetic member; Wherein, the magnetic member is used to absorb the magnetic particles in the slurry.

9. The demagnetization device according to claim 8, characterized in that: The magnetic member has an adsorption state and a release state; When the magnetic member is in the adsorption state, the magnetic member is configured to apply an adsorption force to the magnetic particles in the slurry to adsorb the magnetic particles; When the magnetic member is in the release state, the magnetic member is configured to cancel the adsorption force applied to the magnetic particles to release the magnetic particles.

10. The demagnetization device according to claim 9, characterized in that: The demagnetization device further includes a control component, which is connected to the magnetic component and is used to control the magnetic component to switch between the adsorption state and the release state.

11. The demagnetization device according to claim 9, characterized in that: The demagnetization device further comprises a cleaning member connected to the material delivery pipeline, and the cleaning member is configured to allow a cleaning medium for cleaning magnetic particles to be introduced into the material delivery pipeline when the magnetic member is in the released state.

12. The demagnetization device according to claim 8, characterized in that: The demagnetization device further comprises an electromagnetic pipe, which is arranged around the outer periphery of the magnetic member along a direction intersecting with the preset direction and is spaced from the magnetic member to form a receiving gap, and the material delivery pipe is located in the receiving gap; Wherein, the electromagnetic pipe is used to provide an electromagnetic field.

13. A battery production device, characterized in that: It comprises a demagnetization device as described in any one of claims 1 to 12, wherein the demagnetization device is used to remove magnetic particles in battery slurry.

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