Magnetic foreign matter collection device and magnetic foreign matter content detection system

Abstract

The utility model provides a magnetic foreign matter collection device and a magnetic foreign matter content detection system, and relates to the technical field of batteries. The magnetic foreign matter collecting device comprises a collecting body, the collecting body can be placed on the automatic conveying line body and moves along with the automatic conveying line body, at least part of the collecting body is magnetic, and a non-magnetic isolation layer is arranged on the surface of at least the magnetic part of the collecting body. And a non-magnetic isolation layer is arranged on the surface of the contact part of the acquisition body and the automatic conveying line body. The magnetic foreign matter introduction amount of the automatic conveying line body can be accurately measured by collecting the magnetic foreign matter on the collecting body, the risk degree of the magnetic foreign matter in the positive electrode material production process is evaluated and controlled, and therefore the performance and reliability of a battery are improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a magnetic foreign matter collection device and a magnetic foreign matter content detection system. Background Art

[0002] The positive electrode materials of some batteries still face challenges in some aspects. For example, in the production process of lithium batteries, attention should be paid to the introduction of magnetic foreign matter, which may have a negative impact on battery performance and safety.

[0003] The main equipment for the production of positive electrode materials of most manufacturers is a roller kiln, which is equipped with an automatic transport line. In the process of transporting the sagger loaded with positive electrode materials, a large amount of magnetic foreign matter will be generated due to friction, resulting in the introduction of magnetic foreign matter. However, since there is no device to collect the magnetic foreign matter on the automatic transport line, it is impossible to accurately assess the risk level of the positive electrode material by the amount of magnetic foreign matter introduced on the automatic transport line. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a magnetic foreign matter collection device and a magnetic foreign matter content detection system, aiming to solve the technical problem in the prior art that there is no collection device for collecting magnetic foreign matter on the automatic transport line.

[0005] This application provides the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a magnetic foreign matter collection device, which is applied to an automatic conveying line, and the magnetic foreign matter collection device comprises:

[0007] A collecting body, which can be placed on the automatic conveyor line and move with it, wherein the collecting body is at least partially magnetic, and a non-magnetic isolation layer is provided on the surface of at least the magnetic portion of the collecting body, and the surface of the portion of the collecting body in contact with the automatic conveyor line is also provided with the non-magnetic isolation layer.

[0008] In one embodiment of the first aspect, the collection body includes:

[0009] A bracket, the bottom of which can abut against the conveying surface of the automatic conveying line body, and a non-magnetic isolation layer is provided at a portion where the bracket contacts the automatic conveying line body; and

[0010] The magnetic piece is detachably connected to the bracket, and a non-magnetic isolation layer is provided on the surface of the magnetic piece.

[0011] In one of the embodiments of the first aspect, the magnetic member includes a magnet, and the non-magnetic isolation layer is provided on the surface of the magnet.

[0012] In one embodiment of the first aspect, the bracket has a hole groove, the hole groove is connected to the external environment, and the magnetic member is detachably connected to the side wall of the hole groove.

[0013] In one embodiment of the first aspect, the bracket includes a plurality of side panels, the plurality of side panels are arranged to surround the hole slot, and the side panels are connected to the magnetic member;

[0014] And / or, the end surfaces on two opposite sides of the bottom of the bracket can respectively abut against the guide wheel groups on both sides of the automatic conveyor line body.

[0015] In one of the embodiments of the first aspect, the magnetic member is configured as a columnar structure, the side wall of the hole groove is provided with a mounting portion, the mounting portion has a mounting channel, the magnetic member is passed through the mounting channel, the magnetic member and the mounting channel are loosely matched, and the magnetic member is at least partially exposed outside the mounting channel.

[0016] In one embodiment of the first aspect, the mounting portion includes:

[0017] A plurality of support plates, the plurality of support plates are connected to the side walls of the hole groove, the plurality of support plates are arranged at equal intervals in a direction parallel to the bottom of the bracket, the support plates have insertion holes, and all the insertion holes constitute the installation channel;

[0018] Wherein, the length of the magnetic piece is L1, the distance between adjacent jacks is L2, and L2≤L1≤2L2.

[0019] In one of the embodiments of the first aspect, the mounting portion further includes a limit plate, which is connected to the side wall of the hole groove, and the limit plate is located at one end of the mounting channel, and the limit plate is configured to be able to abut against the end of the magnetic part in the corresponding mounting channel so that the magnetic part is passed through the two sockets.

[0020] In one embodiment of the first aspect, the bracket has a loading and unloading channel and an auxiliary unloading channel, the loading and unloading channel and the auxiliary unloading channel are respectively connected to two ends of the mounting channel, the auxiliary unloading channel and the limiting plate are located at the same end of the mounting channel, and the auxiliary unloading channel passes through the limiting plate, and the distance between the mounting channel and the loading and unloading channel is L3, L3≤L1;

[0021] Among them, the auxiliary unloading channel, the loading and unloading channels and the installation channel are extended in the same direction, and the loading and unloading channels and the installation channel constitute a channel for the magnetic component to pass through.

[0022] In a second aspect, an embodiment of the present application further provides a magnetic foreign matter content detection system, wherein the magnetic foreign matter content detection system includes a magnetic foreign matter collection device as in any of the above embodiments.

[0023] The embodiments of the present application have the following advantages:

[0024] The magnetic foreign matter collection device provided by the present application is placed on the automatic conveying line. Due to the contact between the collection body and the automatic conveying line, and the collection body moves with the automatic conveying line, the magnetic foreign matter generated by the automatic conveying line is collected by the magnetic part of the collection body. Among them, since the introduction of new magnetic foreign matter can be blocked by setting a non-magnetic isolation layer, the amount of magnetic foreign matter introduced into the automatic conveying line can be accurately measured by collecting the magnetic foreign matter on the collection body, which is used to evaluate the risk level of magnetic foreign matter in the production process of positive electrode materials and control it, thereby improving the performance and reliability of the battery, and better meeting the needs of modern electronic equipment and electric vehicles.

[0025] In addition, the present application also relates to a magnetic foreign matter content detection system. Since the above-mentioned magnetic foreign matter collection device has the above-mentioned technical effects, the magnetic foreign matter content detection system including the magnetic foreign matter collection device should have the same technical effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A structural schematic diagram of a magnetic foreign matter collection device provided in an embodiment of the present application from one viewing angle is shown;

[0028] Figure 2 A schematic structural diagram of a magnetic foreign matter collection device from another perspective provided in an embodiment of the present application is shown;

[0029] Figure 3 A schematic structural diagram of a magnetic component in a magnetic foreign matter collection device provided in an embodiment of the present application is shown.

[0030] Description of main component symbols:

[0031] 100-bracket; 110-side plate; 120-installation part; 121-limiting plate; 122-support plate; 1221-installation channel; 130-hole groove; 140-loading and unloading channel; 150-auxiliary unloading channel; 200-magnetic part; 210-magnet; 220-non-magnetic isolation layer. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When 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. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In addition, in the description of the present application, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0037] Among the related technologies, lithium-ion battery technology has become the main power source for modern electronic devices, electric vehicles and renewable energy storage. The widespread application of lithium-ion batteries has had a profound impact on energy conservation, environmental protection and electric transportation. However, despite its obvious advantages, lithium-ion batteries still face challenges in some aspects, such as the introduction of magnetic foreign matter, which may have a negative impact on battery performance and safety.

[0038] The main equipment for the production of positive electrode materials of most manufacturers is a roller kiln, which is equipped with an automatic transport line. The automatic transport line often produces a large amount of magnetic foreign matter due to friction during the transportation of saggers, causing the introduction of magnetic foreign matter. However, since there is no collection device for collecting the magnetic foreign matter on the automatic transport line, it is impossible to accurately assess the risk level by the amount of magnetic foreign matter introduced on the automatic transport line.

[0039] like Figure 1 and Figure 2 As shown, in order to solve the above technical problems, the embodiment of the present application provides a magnetic foreign matter collection device, which is applied to an automatic conveying line. The magnetic foreign matter collection device includes a collection body, which can be placed on the automatic conveying line and move with it, and the collection body is at least partially magnetic, and a non-magnetic isolation layer 220 is provided on the surface of at least the magnetic part of the collection body and the surface of the part where the collection body and the automatic conveying line contact.

[0040] In this embodiment, the automatic conveyor line body takes a roller conveyor as an example. When in use, the collection body can be placed in the roller conveyor, and the collection body and the sagger loaded with positive electrode materials will move with the roller conveyor, and then the magnetic foreign matter dust generated by the friction between the sagger and the roller conveyor will be adsorbed and collected by the magnetic part of the collection body to quantify the amount of magnetic foreign matter introduced. It should be noted that the magnetic foreign matter at the roller conveyor kiln includes metal impurities.

[0041] Obviously, in order to ensure the accuracy of the amount of magnetic foreign matter introduced, a non-magnetic isolation layer 220 is provided on the surface of the magnetic part of the collection body to isolate the magnetic foreign matter adsorbed on the magnetic part, and to prevent the magnetic material in the magnetic part from mixing into the magnetic foreign matter and causing an increase in the amount of magnetic foreign matter introduced. In addition, a non-magnetic isolation layer 220 is provided at the contact portion between the collection body and the roller to prevent the collection body from being worn and generating new magnetic foreign matter.

[0042] The magnetic foreign matter collection device provided by the present application is applied, and the magnetic foreign matter collection device is placed on the automatic conveying line. Due to the contact between the collection body and the automatic conveying line, and the collection body moves with the automatic conveying line, the magnetic foreign matter generated by the automatic conveying line is collected by the magnetic part of the collection body. Among them, since the introduction of new magnetic foreign matter can be blocked by setting a non-magnetic isolation layer, the amount of magnetic foreign matter introduced into the automatic conveying line can be accurately measured by collecting the magnetic foreign matter on the collection body, which is used to evaluate the risk level of magnetic foreign matter in the production process of positive electrode materials and control it, thereby improving the performance and reliability of the battery, and better meeting the needs of modern electronic equipment and electric vehicles.

[0043] like Figure 2 As shown, in some embodiments, the collection body includes a bracket 100 and a magnetic member 200, the bottom of the bracket 100 can be abutted against the conveying surface of the automatic conveyor line, and at least the portion of the bracket 100 that contacts the automatic conveyor line is provided with a non-magnetic isolation layer 220; the magnetic member 200 is detachably connected to the bracket 100, and the surface of the magnetic member 200 is provided with a non-magnetic isolation layer 220.

[0044] That is to say, the magnetic piece 200 contacts the conveying surface through the bracket 100, so as to avoid the magnetic piece 200 directly contacting the conveying surface and affecting the collection effect of magnetic foreign matter. As can be seen from the above, the bracket 100 and the magnetic piece 200 can move with the conveying surface to collect magnetic foreign matter. After the collection of magnetic foreign matter on the automatic conveying line is completed, the operator removes the magnetic piece 200, processes the magnetic piece 200 to obtain the magnetic foreign matter adsorbed on its surface, and then compares the introduction amount of the obtained magnetic foreign matter with the set standard value range, without processing the entire collection body. If the introduction amount is not higher than the set standard value, it means that the risk level of the positive electrode material transported by the automatic conveying line is low; if the introduction amount is higher than the set standard value, it means that the risk level of the positive electrode material transported by the automatic conveying line is high.

[0045] For example, the magnetic part 200 can be disassembled and then pickled to remove the magnetic foreign matter on the surface of the magnetic part 200, and then the amount of the introduced magnetic foreign matter can be obtained through subsequent dehydration, drying, and weighing. However, this method is not limited to this method, and other methods such as flushing and centrifugation can also be used, as long as the magnetic part 200 and the magnetic foreign matter can be separated.

[0046] As described above, by setting a non-magnetic isolation layer 220 on the surface of the magnetic part 200 to form a coating structure, it is possible to avoid damage to the magnetic part 200 when the magnetic foreign matter and the magnetic part 200 are separated, and to avoid the introduction of new magnetic foreign matter due to the wear of the magnetic part 200, thereby improving the accuracy of the detection results.

[0047] Similarly, the surface of the bracket 100 is coated with a non-magnetic isolation layer 220, which can prevent the introduction of new magnetic foreign matter due to the wear of the bracket 100. It should be noted that, regardless of whether the bracket 100 is a metal part, the surface of the bracket 100 has a non-magnetic isolation layer 220. In other words, when the bracket 100 is a metal part, the surface of the bracket 100 can be formed with a non-magnetic isolation layer 220 by spraying; when the bracket 100 is a non-metallic part, the surface of the bracket 100 is equivalent to being formed with a non-magnetic isolation layer 220.

[0048] like Figure 3 As shown, in some embodiments, the magnetic member 200 includes a magnet 210 , and a non-magnetic isolation layer 220 is disposed on the surface of the magnet 210 .

[0049] Exemplarily, the magnet 210 is a permanent magnet 210; or, the magnet 210 is an electromagnet. The present application takes the permanent magnet 210 as an example, and the surface of the magnet 210 is wrapped by the non-magnetic isolation layer 220 to isolate the magnet 210 from the outside. In other words, the magnetic foreign matter is adsorbed on the surface of the non-magnetic isolation layer 220, which facilitates the separation of the magnetic foreign matter.

[0050] Of course, if the magnet 210 is an electromagnet, a mobile power supply is installed on the bracket 100, and the mobile power supply supplies power to the electromagnet. During operation, the electromagnet generates magnetic force after being energized, and can then absorb magnetic foreign matter. When it is necessary to collect the magnetic foreign matter on the electromagnet, the power supply can be cut off, and since the electromagnet loses its magnetic force, it is convenient for the magnetic foreign matter to detach from the electromagnet.

[0051] like Figure 1 and Figure 2 As shown, in some embodiments, the bracket 100 has a hole slot 130 , the hole slot 130 is connected to the external environment, and the magnetic member 200 is detachably connected to the side wall of the hole slot 130 .

[0052] It is easy to understand that by connecting the magnetic piece 200 to the side wall, the hole groove 130 is used to form a protective cavity, thereby protecting the magnetic piece 200 to avoid direct collision with the magnetic piece 200 during the movement of the automatic conveyor line. Among them, since the hole groove 130 is connected to the external environment, it is ensured that dust containing magnetic foreign matter can enter the hole groove 130, that is, the magnetic piece 200 can normally absorb and collect magnetic foreign matter.

[0053] Exemplarily, the bracket 100 is configured as a frame structure, and the frame structure is formed with a hole slot 130 .

[0054] In some embodiments, the end surfaces on the two opposite sides of the bottom of the bracket 100 can respectively abut against the guide wheel groups on both sides of the automatic conveyor line.

[0055] It should be noted that the automatic conveyor line has a conveying surface and guide wheel groups arranged on both sides of the conveying surface, each guide wheel group includes a plurality of guide wheels, and the guide wheels are arranged in sequence along the conveying direction of the conveying surface. In other words, the moving direction of the sagger loaded with positive electrode materials can be corrected by the guide wheel group. Therefore, by respectively contacting the end faces on both sides of the bottom of the bracket 100 with the guide wheel groups on the corresponding sides, it is possible to correct the moving direction of the collection body, and avoid the collection body from rotating and colliding in the automatic conveyor line during operation, avoid damage to the device, and reduce the impact on the collection effect of the magnetic piece 200.

[0056] like Figure 1 and Figure 2 As shown, in some embodiments, the bracket 100 includes a plurality of side panels 110 , the plurality of side panels 110 are arranged to form a hole slot 130 , and the side panels 110 are connected to the magnetic member 200 .

[0057] For example, a plurality of side panels 110 are connected end to end in sequence to form a square bracket 100, the bracket 100 has an upper opening and a lower opening that are relatively arranged, the magnetic member 200 is installed on the inner side of the side panel 110, and the inner side of the side panel 110 forms the side wall of the above-mentioned hole groove 130, and the lower opening of the bracket 100 is located at the bottom and faces the conveying surface. Optionally, the number of side panels 110 is 4. Of course, the number of side panels can also be 4, 5, 6, etc., which is not specifically limited here.

[0058] like Figure 2 As shown, in some embodiments, the magnetic member 200 is configured as a columnar structure, the side wall of the hole groove 130 is provided with a mounting portion 120, the mounting portion 120 has a mounting channel 1221, the magnetic member 200 is passed through the mounting channel 1221, the magnetic member 200 and the mounting channel 1221 are clearance-fitted, and the magnetic member 200 is at least partially exposed outside the mounting channel 1221.

[0059] That is to say, the installation can be achieved by inserting the magnetic member 200 into the installation channel 1221. Since the vibration of the automatic conveyor line is very small during movement and it moves in a horizontal plane, the requirement can be met by only inserting and fixing the magnetic member 200. Of course, the above method of installing the magnetic member 200 is conducive to the rapid disassembly and assembly of the magnetic member 200.

[0060] For example, the magnetic member 200 is configured in a cylindrical shape, a prism shape, a long strip shape, etc. It should be noted that the columnar structure is used to facilitate plugging and unplugging the magnetic member 200 .

[0061] Among them, through the gap fit between the magnetic piece 200 and the installation channel 1221, it is possible to ensure that there is a gap between the two to avoid affecting the magnetic foreign matter from falling when the magnetic piece 200 is pulled out. As for the size of the gap, it is not specifically limited here, and it is motivated for technicians in this field to set it according to the actual use scenario. In addition, the gap fit method can reduce the vibration amplitude of the magnetic piece 200 during the movement process, so that it is stably located in the installation channel 1221.

[0062] like Figure 2 As shown, in some embodiments, the mounting portion 120 is configured as a hollow structure.

[0063] Since the magnetic piece 200 is heavy, by providing the mounting portion 120 with a hollow structure, the contact area between the magnetic piece 200 and the external environment can be increased, which is beneficial for collecting magnetic foreign matter and improving the accuracy of the collected amount; and the structural strength of the mounting portion 120 can be improved.

[0064] Illustratively, the mounting portion 120 is provided with a plurality of openings connected to the mounting channels 1221 , so that the mounting portion 120 forms a hollow structure.

[0065] like Figure 2 As shown, in some embodiments, the mounting portion 120 includes a plurality of support plates 122, the plurality of support plates 122 are connected to the side walls of the hole groove 130, the plurality of support plates 122 are arranged at equal intervals in a direction parallel to the bottom of the bracket 100, the support plates 122 have sockets, and all the sockets constitute a mounting channel 1221; wherein, the length of the magnetic member 200 is L1, the distance between adjacent sockets is L2, and L2≤L1≤2L2.

[0066] Exemplarily, the conveying surface is horizontally arranged, and correspondingly, the bottom of the bracket 100 is horizontally arranged, and then a plurality of support plates 122 are arranged at intervals in the horizontal direction, and all the sockets are coaxially arranged so that there is no inclination in the installation channel 1221, thereby ensuring that the magnetic member 200 is stably inserted into the installation channel 1221.

[0067] Of course, the present application limits the length of the magnetic member 200 and the distance between adjacent sockets, so that when the magnetic member 200 is only inserted into one socket, the magnetic member 200 is in an inclined state, and because the gap between the magnetic member 200 and the socket is matched, the friction resistance between the magnetic member 200 and the socket can be increased, thereby playing an anti-falling effect. In addition, when the magnetic member 200 is in an inclined state, even if the magnetic member 200 slides relative to the socket, the lower end of the magnetic member 200 will slide to abut against the adjacent support plate 122, further enhancing the anti-falling effect.

[0068] like Figure 2As shown, in some embodiments, the mounting portion 120 further includes a limit plate 121, which is connected to the side wall of the hole groove 130, and the limit plate 121 is located at one end of the mounting channel 1221. The limit plate 121 is configured to be able to abut against the end of the magnetic component 200 in the corresponding mounting channel 1221, so that the magnetic component 200 is just inserted into the two sockets.

[0069] Obviously, by adding the limiting plate 121 to cooperate with the supporting plate 122 , the magnetic member 200 can be quickly positioned when inserted into the installation channel 1221 without adjusting the position of the magnetic member 200 .

[0070] During operation, the magnetic member 200 is inserted from the end of the installation channel 1221 away from the limiting plate 121 until it abuts against the limiting plate 121 .

[0071] like Figure 2 As shown, in some embodiments, the bracket 100 has a loading and unloading channel 140 and an auxiliary unloading channel 150, and the loading and unloading channel 140 and the auxiliary unloading channel 150 are respectively connected to the two ends of the mounting channel 1221, the auxiliary unloading channel 150 and the limiting plate 121 are located at the same end of the mounting channel 1221, and the auxiliary unloading channel 150 passes through the limiting plate 121, and the distance between the mounting channel 1221 and the loading and unloading channel 140 is L3, L3≤L1; wherein, the auxiliary unloading channel 150, the loading and unloading channel 140 and the mounting channel 1221 extend in the same direction, and the loading and unloading channel 140 and the mounting channel 1221 constitute a channel for the magnetic component 200 to pass through.

[0072] In this embodiment, the magnetic component 200 is cylindrical, and the loading and unloading channel 140, the auxiliary unloading channel 150 and the installation channel 1221 are all circular channels and the three are coaxially arranged. Among them, the radius of the loading and unloading channel 140 and the radius of the installation channel 1221 are both larger than the radius of the magnetic component 200, so as to ensure that the magnetic component 200 can be inserted into the installation channel 1221 after passing through the loading and unloading channel 140. Among them, the radius of the auxiliary unloading channel 150 is smaller than the radius of the magnetic component 200, so that the magnetic component 200 cannot pass through the auxiliary unloading channel 150, ensuring that the magnetic component 200 can abut against the limit plate 121. In actual work, an auxiliary tool can be inserted into the auxiliary unloading channel 150 to push out the magnetic component 200, so as to facilitate the removal of the magnetic component 200.

[0073] Exemplarily, the radius of the loading and unloading channel 140 is slightly smaller than the radius of the installation channel 1221 . This structural setting prevents the magnetic component 200 from escaping from the installation channel 1221 .

[0074] In some embodiments, the non-magnetic isolation layer 220 is a plastic layer.

[0075] Obviously, the plastic layer plays the role of isolation and wear resistance. Of course, other non-magnetic foreign body materials can also be selected as the non-magnetic isolation layer 220, which is not specifically limited here.

[0076] For example, a plastic sleeve, a plastic film or other plastic product is used to cover the surface of the bracket 100 and the magnet 210 by a thermoplastic process to form a plastic layer.

[0077] Exemplarily, the bracket 100 is configured as a plastic bracket 100, for example, the bracket 100 is formed by splicing polytetrafluoroethylene plates.

[0078] In addition, to facilitate understanding of the technical solution of this application, the working principle is provided as follows:

[0079] The magnetic foreign matter collection device is placed on the automatic conveying line. Due to the contact limit of the bracket 100 and the guide wheel group, the bracket 100 and the guide wheel can be kept in contact, thereby preventing the bracket 100 and / or the magnetic member 200 from colliding with the automatic conveying line, so that the magnetic member 200 moves with the automatic conveying line to collect the magnetic foreign matter generated by the automatic conveying line. Subsequently, the magnetic member 200 can be removed to collect the magnetic foreign matter on the magnetic member 200 to accurately measure the amount of magnetic foreign matter introduced into the automatic conveying line.

[0080] Therefore, the present application can accurately collect the amount of magnetic foreign matter introduced into the automatic transport line, which can be used to evaluate the risk level of magnetic foreign matter in the production process of positive electrode materials and control it, thereby improving the performance and reliability of the battery and better meeting the needs of modern electronic equipment and electric vehicles.

[0081] In a second aspect, an embodiment of the present application further provides a magnetic foreign matter content detection system, and the magnetic foreign matter content detection system includes a magnetic foreign matter collection device as in any of the above embodiments.

[0082] The magnetic foreign matter content detection system is used to detect the amount of magnetic foreign matter introduced into the automatic conveying line; and the magnetic foreign matter collection device is a part of the magnetic foreign matter content detection system, that is, the magnetic foreign matter collection device is only used to collect magnetic foreign matter for the magnetic foreign matter content detection system.

[0083] Since the above-mentioned magnetic foreign matter collection device has the above-mentioned technical effects, the magnetic foreign matter content detection system including the magnetic foreign matter collection device should have the same technical effects, which will not be repeated here.

[0084] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0085] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0086] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for ordinary technicians in this field, 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.

Claims

1. A magnetic foreign body collection device, applied to an automatic conveyor line, characterized in that: The magnetic foreign matter collecting device comprises: A collecting body, the collecting body can be placed on the automatic conveying line and move with it, the collecting body is at least partially magnetic, and the surface of at least the magnetic part of the collecting body is provided with a non-magnetic isolation layer (220), and the surface of the part of the collecting body that contacts the automatic conveying line is also provided with the non-magnetic isolation layer (220).

2. The magnetic foreign matter collecting device according to claim 1, characterized in that: The collection entity comprises: A support (100), the bottom of the support (100) being capable of abutting against the conveying surface of the automatic conveying line, and the portion of the support (100) in contact with the automatic conveying line being provided with the non-magnetic isolation layer (220); and A magnetic piece (200), the magnetic piece (200) is detachably connected to the bracket (100), and the non-magnetic isolation layer (220) is provided on the surface of the magnetic piece (200).

3. The magnetic foreign matter collecting device according to claim 2, characterized in that: The magnetic member (200) comprises a magnet (210), and the non-magnetic isolation layer (220) is provided on the surface of the magnet (210).

4. The magnetic foreign matter collecting device according to claim 2, characterized in that: The bracket (100) has a hole groove (130), the hole groove (130) is connected to the external environment, and the magnetic member (200) is detachably connected to the side wall of the hole groove (130); And / or, the end surfaces on two opposite sides of the bottom of the bracket (100) can respectively abut against the guide wheel groups on two sides of the automatic conveyor line body.

5. The magnetic foreign matter collecting device according to claim 4, characterized in that: The bracket (100) comprises a plurality of side plates (110), the plurality of side plates (110) are arranged to form a hole groove (130), and the side plates (110) are connected to the magnetic member (200).

6. The magnetic foreign matter collecting device according to claim 4, characterized in that: The magnetic component (200) is arranged as a columnar structure, the side wall of the hole groove (130) is provided with a mounting portion (120), the mounting portion (120) has a mounting hole (1221), the magnetic component (200) is passed through the mounting hole (1221), the magnetic component (200) and the mounting hole (1221) are clearance-matched, and the magnetic component (200) is at least partially exposed outside the mounting hole (1221).

7. The magnetic foreign matter collecting device according to claim 6, characterized in that: The mounting portion (120) comprises: A plurality of support plates (122), the plurality of support plates (122) being connected to the side walls of the hole groove (130), the plurality of support plates (122) being arranged at equal intervals along a direction parallel to the bottom of the bracket (100), the support plates (122) having insertion holes, and all the insertion holes forming the installation channel (1221); Wherein, the length of the magnetic member (200) is L1, the distance between adjacent insertion holes is L2, and L2≤L1≤2L2.

8. The magnetic foreign matter collecting device according to claim 7, characterized in that: The mounting portion (120) further comprises a limiting plate (121), the limiting plate (121) being connected to the side wall of the hole groove (130), the limiting plate (121) being located at one end of the mounting hole (1221), the limiting plate (121) being capable of abutting against the end of the magnetic member (200) in the corresponding mounting hole (1221), so that the magnetic member (200) is inserted into the two insertion holes.

9. The magnetic foreign matter collecting device according to claim 8, characterized in that: The bracket (100) has a loading and unloading channel (140) and an auxiliary unloading channel (150), the loading and unloading channel (140) and the auxiliary unloading channel (150) are respectively connected to the two ends of the mounting channel (1221), the auxiliary unloading channel (150) and the limiting plate (121) are located at the same end of the mounting channel (1221), and the auxiliary unloading channel (150) is arranged to penetrate the limiting plate (121), and the distance between the mounting channel (1221) and the loading and unloading channel (140) is L3, L3≤L1; The auxiliary material unloading channel (150), the loading and unloading channel (140) and the installation channel (1221) are extended in the same direction, and the loading and unloading channel (140) and the installation channel (1221) constitute a channel through which the magnetic component (200) can pass.

10. A magnetic foreign matter content detection system, characterized in that: The magnetic foreign matter content detection system comprises the magnetic foreign matter collection device as described in any one of claims 1 to 9.

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