Demagnetizing device and battery production equipment

Abstract

The utility model relates to a demagnetizing device and battery production equipment. The demagnetizing device comprises a material conveying pipeline; the adsorption part extends in the axial direction of the material conveying pipeline and is arranged in the material conveying pipeline, a flow channel used for containing slurry is formed between the adsorption part and the inner wall of the material conveying pipeline in a spaced mode, and the adsorption part is used for adsorbing magnetic particles in the slurry; the turbulent flow piece is arranged on the periphery of the adsorption piece in a protruding mode in the direction intersecting with the axial direction of the material conveying pipeline. The spoiler arranged in the protruding mode can have a spoiler effect on the slurry, on one hand, the flowing speed of the slurry can be reduced, the slurry makes more sufficient contact with the adsorption piece, and the demagnetizing efficiency is improved; and on the other hand, the turbulent flow piece can stir the magnetic particles in the slurry, so that the probability that the magnetic particles 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] Material delivery pipeline;

[0007] An adsorbent extends along the axial direction of the feed pipeline and is disposed in the feed pipeline, a flow channel for accommodating slurry is formed between the adsorbent and the inner wall of the feed pipeline, and the adsorbent is used to adsorb magnetic particles in the slurry; and

[0008] The spoiler is protrudingly arranged on the outer periphery of the adsorption member along a direction intersecting with the axial direction of the material conveying pipeline.

[0009] Through the above structure, when the slurry flows in the flow channel between the conveying pipe and the adsorbent, the protruding spoiler can disturb the slurry. On the one hand, it can reduce the flow speed of the slurry, so that the slurry and the adsorbent are in more complete contact, thereby improving the demagnetization efficiency. On the other hand, the spoiler can stir the magnetic particles in the slurry to increase the probability of the magnetic particles being adsorbed and captured by the adsorbent, thereby further improving the demagnetization efficiency.

[0010] In some embodiments, the spoiler is bent and extended along the axial direction of the material conveying pipeline, and is protruded along a direction intersecting the axial direction of the material conveying pipeline and is disposed on at least a portion of the outer circumference of the adsorption member.

[0011] Through the above structure, the spoiler can not only spoil the slurry, but also play a certain guiding role, so that the slurry can flow along the extension direction of the spoiler, increase the flow path of the slurry, further increase the contact time between the slurry and the adsorbent, and improve the demagnetization efficiency.

[0012] In some embodiments, the spoiler extends along the axial direction of the material conveying pipe and is wrapped around the outer circumference of the adsorption element.

[0013] As a result, the slurry can flow in a spiral path along the radial direction of the conveying pipeline and around the periphery of the adsorbent under the guidance of the spoiler, which not only increases the contact area and contact time between the slurry and the adsorbent, but also further disturbs the flow of the slurry, thereby increasing the probability of the magnetic particles in the slurry being adsorbed and captured by the adsorbent, further improving the demagnetization efficiency.

[0014] In some embodiments, the number of turns of the spoiler wrapped around the outer circumference of the adsorption member ranges from 2 to 50, and each turn of the spoiler is arranged at intervals.

[0015] Through the above structure, the spoiler can not only play a blocking and spoiling role, but also can guide the slurry smoothly, so that the slurry can flow smoothly around the adsorption member, so as to increase the contact area and contact time between the slurry and the adsorption member, and improve the demagnetization efficiency.

[0016] In some embodiments, the distance between two adjacent circles of spoilers is 0.1 cm to 5 cm.

[0017] Setting the distance between each two adjacent circles of spoilers to the above range can take into account the blocking and disrupting effects of the spoilers on the slurry, as well as the flow velocity of the slurry in the flow channel, so that the slurry has better demagnetization effect and production efficiency.

[0018] In some embodiments, the distance between two adjacent circles of spoilers is 0.1 cm to 1 cm.

[0019] By further setting the distance between each two adjacent circles of spoilers to the above range, the flow velocity of the slurry in the flow channel can be controlled within a better range while taking into account the demagnetization effect of the slurry.

[0020] In some embodiments, in a direction intersecting with the axial direction of the material delivery pipeline, a ratio between a height of the spoiler protruding from an outer wall of the adsorption member and a width of the flow channel ranges from 0.2:1 to 4:1.

[0021] Setting the ratio of the height of the spoiler protruding from the outer wall of the adsorbent to the width of the flow channel to the above range can improve the spoiler's disruptive effect on the slurry without affecting the flow velocity of the slurry, thereby allowing the magnetic particles in the slurry to be better adsorbed onto the adsorbent and improving the demagnetization effect.

[0022] In some embodiments, in a direction intersecting with the axial direction of the material conveying pipeline, a ratio between a height of the spoiler protruding from an outer wall of the adsorption member and a width of the flow channel ranges from 0.2:1 to 1:1.

[0023] Therefore, the above ratio range can further improve the flow disturbance effect of the spoiler on the slurry and improve the demagnetization effect without affecting the flow velocity of the slurry.

[0024] In some embodiments, the spoiler is made of a corrosion-resistant non-metallic material, thereby reducing the probability of the spoiler being corroded by the slurry during the contact between the spoiler and the slurry, thereby improving the structural integrity of the spoiler.

[0025] 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.

[0026] The above-mentioned demagnetization device and battery production equipment have a spoiler protruding from the outer periphery of the adsorbent. When the slurry flows in the flow channel between the feed pipeline and the adsorbent, the protruding spoiler can disturb the slurry. On the one hand, it can reduce the flow velocity of the slurry, so that the slurry and the adsorbent have more complete contact, thereby improving the demagnetization efficiency. On the other hand, the spoiler can stir the magnetic particles in the slurry to increase the probability of the magnetic particles being adsorbed and captured by the adsorbent, thereby further improving the demagnetization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of a demagnetization device according to one or more embodiments.

[0028] Figure 2 is a cross-sectional view of a demagnetization device according to one or more embodiments.

[0029] Figure 3 Schematic diagram of the structure of a spoiler in a demagnetization device according to one or more embodiments.

[0030] Figure 4 is a cross-sectional view of a demagnetization device according to one or more embodiments.

[0031] Explanation of reference numerals: 100, demagnetizing device; 10, feed pipe; 20, adsorption member; 30, spoiler; 40, flow channel; a, axial direction. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] However, the slurry usually contains a large amount of 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 great impact on the discharge and safety performance of the electrode assembly or battery cell, affecting the performance of the battery.

[0042] Based on this, it is necessary to demagnetize the slurry before coating the slurry to remove the magnetic particles in the slurry.

[0043] 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.

[0044] 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, making it difficult for some magnetic particles that are far away from the magnetic rod to be adsorbed on the magnetic rod, resulting in poor demagnetization efficiency and demagnetization effect. On the other hand, since the slurry flows faster in the sleeve, the contact time between the slurry and the magnetic rod is shorter, which also leads to poor demagnetization efficiency and demagnetization effect.

[0045] Based on the above considerations, in order to solve the problem 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 spoiler is protrudingly arranged on the periphery of the adsorbent. When the slurry flows in the flow channel between the feed pipeline and the adsorbent, the protruding spoiler can play a spoiler role on the slurry. On the one hand, it can reduce the flow velocity of the slurry, so that the slurry and the adsorbent are in more sufficient contact, thereby improving the demagnetization efficiency. On the other hand, the spoiler can stir the magnetic particles in the slurry to increase the probability that the magnetic particles are adsorbed and captured by the adsorbent, thereby further improving the demagnetization efficiency.

[0046] See also Figure 1 and Figure 2 An embodiment of the present application provides a demagnetization device 100, comprising a feed pipe 10, an adsorbent 20 and a spoiler 30, wherein the adsorbent 20 extends along the axial direction a of the feed pipe 10 and is disposed in the feed pipe 10, a flow channel 40 for accommodating slurry is formed between the adsorbent 20 and the inner wall of the feed pipe 10, and the adsorbent 20 is used to adsorb magnetic particles in the slurry. The spoiler 30 is protrudingly disposed on the outer periphery of the adsorbent 20 in a direction intersecting the axial direction a of the feed pipe 10.

[0047] 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 a feed pipe 10, an adsorbent 20, and a spoiler 30, wherein the feed pipe 10 refers to a component that can transport slurry, and the feed pipe 10 is hollow inside to accommodate the adsorbent 20 and slurry or other structures in the demagnetization device 100.

[0048] The adsorbent 20 refers to a component that can adsorb magnetic particles in the slurry. The adsorbent 20 can be, but is not limited to, a magnetic component or a magnetizable metal structure. The adsorbent 20 is disposed in the feed pipe 10, and the adsorbent 20 extends along the axial direction a of the feed pipe 10. Since the diameter of the adsorbent 20 is smaller than the diameter of the feed pipe 10, the adsorbent 20 and the inner wall of the feed pipe 10 are spaced apart from each other, and a flow channel 40 for accommodating the slurry is formed.

[0049] The slurry is introduced into the flow channel 40 from the feed port. When the slurry flows in the flow channel 40, the adsorbent 20 can adsorb the magnetic particles in the slurry, so that the magnetic particles are adsorbed onto the adsorbent 20, and the magnetic particles are separated from the slurry. Then the slurry flows out from the discharge port of the flow channel 40, thereby realizing the demagnetization process of the slurry.

[0050] Specifically, in order to better form the flow channel 40 and make the structure of the flow channel 40 more uniform, the feed pipe 10 and the adsorbent 20 can be set to a shape that matches each other. For example, when the feed pipe 10 is set to a cylindrical shape, the adsorbent 20 is also set to a cylindrical structure. When the feed pipe 10 is set to a rectangular structure, the adsorbent 20 is also set to a rectangular structure. In this way, the flow channel 40 is more evenly formed between the inner wall of the feed pipe 10 and the adsorbent 20.

[0051] Furthermore, the spoiler 30 refers to a structure that can disturb the flow of the slurry in the flow channel 40 to reduce the flow velocity of the slurry in the flow channel 40. The spoiler 30 is protrudingly arranged on the periphery of the adsorbent 20 along a direction intersecting with the axial direction a of the feed pipe 10, that is, along the radial direction of the feed pipe 10. When the slurry encounters the spoiler 30 in the flow channel 40, the spoiler 30 forms a barrier to the slurry. On the one hand, it can decelerate the slurry, thereby increasing the contact time between the slurry and the adsorbent 20, so that the adsorbent 20 can more thoroughly adsorb the magnetic particles in the slurry. On the other hand, the spoiler 30 disturbs the slurry and stirs the magnetic particles in the slurry to increase the probability that the magnetic particles in the slurry are adsorbed and captured by the adsorbent 20, thereby improving the demagnetization efficiency.

[0052] Thus, through the above structure, when the slurry flows in the flow channel 40 between the conveying pipe 10 and the adsorbent 20, the protruding spoiler 30 can disturb the slurry. On the one hand, the flow velocity of the slurry can be reduced, so that the slurry and the adsorbent 20 are in more complete contact, thereby improving the demagnetization efficiency. On the other hand, the spoiler 30 can stir the magnetic particles in the slurry to increase the probability of the magnetic particles being adsorbed and captured by the adsorbent 20, thereby further improving the demagnetization efficiency.

[0053] In some embodiments, the spoiler 30 is bent and extended along the axial direction a of the material conveying pipeline 10 , and is protruded and disposed on at least a portion of the outer circumference of the adsorption member 20 along a direction intersecting the axial direction a of the material conveying pipeline 10 .

[0054] Specifically, the spoiler 30 can be configured as a spiral structure that bends and extends along the axial direction a of the conveying pipe 10, and is spirally arranged on at least part of the periphery of the adsorbent 20. When the slurry flows in the flow channel 40, the spoiler 30 can not only play a spoiling role on the slurry, but also play a certain guiding role on the slurry.

[0055] Therefore, the curved and extended protrusion of the spoiler 30 is arranged on at least part of the periphery of the adsorbent 20. In the process of the slurry flowing along the extension direction of the spoiler 30, the flow path of the slurry can be increased, and the contact time between the slurry and the adsorbent 20 can be further increased, thereby improving the demagnetization efficiency.

[0056] Through the above structure, the spoiler 30 can not only spoil the slurry, but also play a certain guiding role, so that the slurry can flow along the extension direction of the spoiler 30, increase the flow path of the slurry, further increase the contact time between the slurry and the adsorption element 20, and improve the demagnetization efficiency.

[0057] Please also see Figure 2 and Figure 3 In some embodiments, the spoiler 30 extends along the axial direction a of the material conveying pipeline 10 and is wrapped around the outer circumference of the adsorption member 20 .

[0058] Specifically, the spoiler 30 extends along the axial direction a of the material conveying pipeline 10 and is wound around the outer circumference of the adsorption member 20 , that is, the spoiler 30 is in a spiral structure and surrounds the outer circumference of the adsorption member 20 .

[0059] As a result, the slurry can flow in a spiral path along the radial direction of the conveying pipeline 10 and around the outer periphery of the adsorbent 20 under the guidance of the spoiler 30, which not only increases the contact area and contact time between the slurry and the adsorbent 20, but also further disturbs the flow of the slurry, thereby increasing the probability of the magnetic particles in the slurry being adsorbed and captured by the adsorbent 20, and further improving the demagnetization efficiency.

[0060] In some embodiments, the number of turns of the spoiler 30 wrapped around the outer circumference of the adsorption member 20 ranges from 2 to 50, and each turn of the spoiler 30 is arranged at intervals.

[0061] Preferably, the number of turns of the spoiler 30 wrapped around the outer periphery of the adsorbent 20 can be set to 2 to 50. Specifically, the number of turns of the spoiler 30 wrapped around the outer periphery of the adsorbent 20 can be, but is not limited to, 2 turns, 5 turns, 10 turns, 20 turns, 30 turns, 40 turns, and 50 turns, wherein the specific number of turns of the spoiler 30 wrapped around the outer periphery of the adsorbent 20 can be adjusted according to actual production requirements, which will not be described in detail here.

[0062] It should be noted that when the length of the adsorbent 20 is constant, the number of turns of the spoiler 30 wrapped around the outer circumference of the adsorbent 20 will affect the spacing distance between two adjacent turns of the spoiler 30, and a drainage groove is formed between each two adjacent turns of the spoiler 30. Therefore, the number of turns of the spoiler 30 wrapped around the outer circumference of the adsorbent 20 will affect the width of the drainage groove.

[0063] When the slurry flows in the flow channel 40 , the slurry flows along the drainage grooves between two adjacent circles of spoilers 30 , and the width of the drainage grooves affects the flow speed of the slurry therein.

[0064] That is to say, the fewer the number of turns of the spoiler 30 wrapped around the outer periphery of the adsorbent 20, the greater the width of the drainage groove, and the slurry flows more smoothly in the drainage groove, but the blocking and flow-disturbing effects of the spoiler 30 on the slurry are weaker. The more the number of turns of the spoiler 30 wrapped around the outer periphery of the adsorbent 20, the smaller the width of the drainage groove, the slower the flow speed of the slurry in the drainage groove, and the better the blocking and flow-disturbing effects of the spoiler 30 on the slurry.

[0065] Therefore, the number of turns of the spoiler 30 is set to the above range, and each adjacent turn of the spoiler 30 is arranged at intervals, so that a drainage groove can be formed between each adjacent turn of the spoiler 30. When the slurry flows in the flow channel 40, the spoiler 30 not only blocks and disturbs the slurry, but also enables the slurry to flow along the drainage groove between the two adjacent turns of the spoiler 30, so that the slurry can smoothly flow around the circumference of the adsorbent 20, so as to increase the contact area and contact time between the slurry and the adsorbent 20.

[0066] Through the above structure, the spoiler 30 can not only play a blocking and spoiling role, but also can guide the slurry smoothly, so that the slurry can flow smoothly around the adsorption member 20 in the circumferential direction, so as to increase the contact area and contact time between the slurry and the adsorption member 20, and improve the demagnetization efficiency.

[0067] In some embodiments, the distance L between two adjacent circles of spoilers 30 is 0.1 cm to 5 cm.

[0068] As some specific embodiments, the distance between each two adjacent circles of spoilers 30 can be set to 0.1 cm, 0.3 cm, 0.5 cm, 0.7 cm, 1 cm, 2 cm, 4 cm, or 5 cm, wherein the specific distance can be adjusted according to actual production requirements and will not be elaborated herein.

[0069] Specifically, the distance between each two adjacent circles of spoilers 30 will affect the blocking and spoiling effect of the spoilers 30 on the slurry. If the flow speed of the slurry in the flow channel 40 is too fast, the adsorption effect of the adsorbent 20 on the magnetic particles in the slurry is poor, resulting in poor demagnetization effect of the slurry. If the flow speed of the slurry in the flow channel 40 is too slow, it will also affect the demagnetization efficiency of the slurry, thereby affecting the overall production efficiency of the battery.

[0070] Therefore, setting the distance between each two adjacent circles of spoilers 30 to the above range can take into account the blocking and disrupting effects of the spoilers 30 on the slurry, as well as the flow speed of the slurry in the flow channel 40, so that the slurry has a better demagnetization effect and production efficiency.

[0071] In some embodiments, the distance L between two adjacent circles of spoilers 30 is 0.1 cm to 1 cm.

[0072] Specifically, by further setting the distance between each two adjacent circles of spoilers 30 to the above range, the flow velocity of the slurry in the flow channel 40 can be controlled within a better range while taking into account the demagnetization effect of the slurry.

[0073] Please also see Figure 2 and Figure 4 In some embodiments, in a direction intersecting the axial direction a of the feed pipe 10 , a ratio between a height H1 of the spoiler 30 protruding from an outer wall of the adsorption member 20 and a width H2 of the flow channel 40 is in a range of 0.2:1 to 4:1.

[0074] As some specific embodiments, the ratio range between the height H1 of the spoiler 30 protruding from the outer wall of the adsorption member 20 and the width H2 of the flow channel 40 can be set to 0.2:1, 0.6:1, 1:1, 2.5:1, 4:1. The specific ratio can be adjusted according to actual production needs to adjust the blocking and disruptive effects of the spoiler 30 on the slurry, which will not be elaborated here.

[0075] Specifically, the spoiler 30 is provided on the outer wall of the adsorption member 20 along the radial protrusion of the feed pipeline 10. The ratio between the height of the spoiler 30 protruding from the outer wall of the adsorption member 20 and the width of the flow channel 40, that is, the proportion of the spoiler 30 in the flow channel 40, can affect the blocking and disruptive effect of the spoiler 30 on the slurry.

[0076] The larger the ratio range, the higher the height of the spoiler 30 in the flow channel 40, and the stronger the blocking and disrupting effect of the spoiler 30 on the slurry. The smaller the ratio range, the lower the height of the spoiler 30 in the flow channel 40, and the weaker the blocking and disrupting effect of the spoiler 30 on the slurry.

[0077] Therefore, setting the ratio between the height of the spoiler 30 protruding from the outer wall of the adsorbent 20 and the width of the flow channel 40 to the above-mentioned range can improve the spoiler effect of the spoiler 30 on the slurry without affecting the flow velocity of the slurry, thereby allowing the magnetic particles in the slurry to be better adsorbed onto the adsorbent 20, thereby improving the demagnetization effect.

[0078] In some embodiments, in a direction intersecting the axial direction a of the feed pipe 10 , a ratio between a height H1 of the spoiler 30 protruding from an outer wall of the adsorption member 20 and a width H2 of the flow channel 40 is in a range of 0.2:1 to 1:1.

[0079] Furthermore, the above ratio range can further improve the flow disturbance effect of the spoiler 30 on the slurry and improve the demagnetization effect without affecting the flow velocity of the slurry.

[0080] In some embodiments, the spoiler 30 is made of a corrosion-resistant non-metallic material.

[0081] Specifically, the spoiler 30 is made of a corrosion-resistant non-metallic material, which can reduce the probability of the spoiler 30 being corroded by the slurry during the contact between the spoiler 30 and the slurry, thereby improving the structural integrity of the spoiler 30 .

[0082] The spoiler 30 may be made of, but is not limited to, nylon, PTFE or other materials, which will not be described in detail herein.

[0083] 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.

[0084] According to one or more embodiments, the slurry is introduced from the feed port of the flow channel 40 so that the slurry flows in the flow channel 40. At the same time, the spoiler 30 can block and disrupt the slurry, thereby reducing the flow speed of the slurry, so that the slurry can be more fully in contact with the adsorbent 20, so that the adsorbent 20 can more thoroughly adsorb the magnetic particles in the slurry.

[0085] Furthermore, the spoiler 30 can stir the magnetic particles in the slurry during the process of blocking and disturbing the slurry, so as to increase the probability of the magnetic particles being adsorbed and captured by the adsorbent 20, thereby improving the demagnetization effect.

[0086] In addition, the spoiler 30 can also guide the slurry so that the slurry flows in a spiral shape around the outer periphery of the adsorption member 20 in the flow channel 40, thereby increasing the contact area and contact time between the slurry and the adsorption member 20, and further improving the demagnetization effect.

[0087] 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.

[0088] 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: Material delivery pipeline; An adsorbent extends along the axial direction of the feed pipeline and is disposed in the feed pipeline, wherein a flow channel for accommodating slurry is formed between the adsorbent and the inner wall of the feed pipeline, and the adsorbent is used to adsorb magnetic particles in the slurry; and The spoiler is protrudingly arranged on the outer periphery of the adsorption member along a direction intersecting with the axial direction of the material conveying pipeline.

2. The demagnetization device according to claim 1, characterized in that: The spoiler is bent and extended along the axial direction of the material conveying pipeline, and is protruded and arranged on at least a part of the outer circumference of the adsorption member along a direction intersecting the axial direction of the material conveying pipeline.

3. The demagnetization device according to claim 2, characterized in that: The spoiler extends along the axial direction of the material conveying pipeline and is wound around the outer circumference of the adsorption member.

4. The demagnetization device according to claim 3, characterized in that: The number of turns of the spoiler wrapped around the outer circumference of the adsorption member ranges from 2 to 50, and each turn of the spoiler is arranged at intervals.

5. The demagnetization device according to claim 4, characterized in that: The distance between each two adjacent circles of the spoilers is 0.1 cm to 5 cm.

6. The demagnetization device according to claim 5, characterized in that: The distance between each two adjacent circles of the spoilers is 0.1 cm to 1 cm.

7. The demagnetization device according to any one of claims 1 to 6, characterized in that: In a direction intersecting with the axial direction of the material conveying pipeline, a ratio between a height of the spoiler protruding from an outer wall of the adsorption member and a width of the flow channel is in a range of 0.2:1 to 4:

1.

8. The demagnetization device according to claim 7, characterized in that: In a direction intersecting with the axial direction of the material conveying pipeline, a ratio between a height of the spoiler protruding from an outer wall of the adsorption member and a width of the flow channel is in a range of 0.2:1 to 1:

1.

9. The demagnetization device according to any one of claims 1 to 6, characterized in that: The spoiler is made of a corrosion-resistant non-metallic material.

10. A battery production device, characterized in that: It comprises a demagnetization device as described in any one of claims 1 to 9, wherein the demagnetization device is used to remove magnetic particles in battery slurry.

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