Ferromagnetic object acquisition device for lithium battery positive electrode material workshop environment

Abstract

A ferromagnetic object acquisition device for a lithium battery positive electrode material workshop environment, comprising: a collection box (100) which comprises a box wall, said collection box (100) being provided with an opening (110); a collection mechanism (200) is installed in the collection box (100), and comprises a magnetic attraction plate set (210) capable to move relative to the opening (110), and when moving to the opening (110), the magnetic attraction plate set (210) is used for cooperating with the opening (110) to form a cover sealing state; an air suction mechanism (300) comprises a fan (310) and a first air duct plate (320), the first air duct plate (320) is mounted outside the opening (110), an air duct (330) is formed between the first air duct plate (320) and the magnetic attraction plate set (210) in the cover sealing state, and the fan (310) is mounted at one end of the air duct (330); a weighing mechanism (400) is mounted in the collection box (100); and a magnetic attraction mechanism (500) is mounted in the collection box (100). The magnetic attraction plate set (210) is used in cooperation with the air suction mechanism (300) to ingeniously form the air duct (330), thereby increasing the air pressure. The magnetic attraction plate set (210) serves as a part of the air duct (330), and a ferromagnetic object is fully separated from the air under the magnetic attraction effect of the magnetic attraction plate set (210). The overall structure is excellent in detection precision of the ferromagnetic object in the air.

Description

Ferromagnetic material collection device for lithium battery positive electrode material workshop environment Technical Field

[0001] The present invention relates to lithium battery positive electrode material detection equipment, in particular to a ferromagnetic object collection device used in a lithium battery positive electrode material workshop environment. Background Art

[0002] In the existing production of lithium battery positive electrode materials, the ferromagnetic content of lithium battery positive electrode materials may exceed the standard due to factors such as environmental equipment. If these positive electrode materials are used in lithium batteries, it will have a serious impact on the safety and life of the lithium batteries.

[0003] Existing methods for detecting dust in workshops rely primarily on photoelectric methods. While these methods can approximate the amount of dust, their accuracy is low and cannot meet the precision requirements for detecting ferromagnetic materials in battery-grade cathode materials. Therefore, there is an urgent need to develop a device that can accurately detect the ferromagnetic content in cathode material workshops.

[0004] Summary of the Invention

[0005] The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. To this end, the present invention provides a ferromagnetic material collection device for use in a lithium battery positive electrode material workshop environment.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] The technical solution of the ferromagnetic material collection device for lithium battery positive electrode material workshop environment of the present invention is as follows, including:

[0008] A collection box, wherein an opening is formed on a wall of the collection box;

[0009] a collecting mechanism installed in the collecting box, the collecting mechanism including a magnetic plate group movable relative to the opening, and when the magnetic plate group moves to the opening, the magnetic plate group is used to cooperate with the opening to form a closed state;

[0010] An air suction mechanism includes a fan and a first air duct plate, wherein the first air duct plate is installed on the outside of the opening, an air duct is formed between the first air duct plate and the magnetic plate assembly in the closed state, and the fan is installed at one end of the air duct;

[0011] a weighing mechanism installed in the collection box; and

[0012] The magnetic attraction mechanism is installed in the collection box, and is used to attract ferromagnetic objects attached to the surface of the magnetic attraction plate group and transfer them to the weighing mechanism.

[0013] The ferromagnetic material collection device for a lithium battery positive electrode material workshop environment according to the present invention has at least the following beneficial effects: a magnetic plate group is used in conjunction with an air suction mechanism to cleverly form an air duct, thereby increasing wind pressure; the magnetic plate group serves as part of the air duct, and ferromagnetic objects are fully separated from the air under the magnetic attraction of the magnetic plate group; the overall structure has high detection accuracy for ferromagnetic objects in the air.

[0014] Furthermore, the opening is rectangular and is opened on the longitudinal wall of the collecting box and extends along the height direction of the collecting box. The cross-section of the first air duct plate is U-shaped. The first air duct plate is vertically installed on the collecting box. A downward-opening air inlet is formed between the lower end of the first air duct plate and the outer side wall of the collecting box. The fan is installed at the upper end of the first air duct plate.

[0015] Furthermore, the side surface of the first air duct plate facing the air duct is a wavy surface.

[0016] Furthermore, the magnetic plate group includes a bracket, a permanent magnet plate, a second non-magnetic air duct plate and an operating cylinder; the second air duct plate and the permanent magnet plate are installed on the bracket; under the driving action of the operating cylinder, the permanent magnet plate and the second air duct plate can move relative to each other, closer or away from each other; the magnetic plate group is covered at the opening by the second air duct plate, and the second air duct plate cooperates with the first air duct plate to form the air duct.

[0017] Furthermore, the collection mechanism also includes a first driving cylinder, and the lower end of the magnetic plate group is hinged in the collection box; the first driving cylinder drives the magnetic plate group to swing in the collection box, and the first driving cylinder drives the magnetic plate group to cover the opening; or the first driving cylinder drives the magnetic plate group to leave the opening, and makes the surface of the magnetic plate group that absorbs ferromagnetic objects face upward in the collection box, and the magnetic mechanism moves above the magnetic plate group.

[0018] Furthermore, the magnetic attraction mechanism includes a second driving cylinder, a driving slide rail and a first electromagnetic head. The driving slide rail is horizontally installed in the collection box. The second driving cylinder is installed on the driving slide rail and can move horizontally. The first electromagnetic head is installed on the telescopic shaft of the second driving cylinder and can be raised and lowered.

[0019] Furthermore, the weighing mechanism includes a weighing module, a tray and a second electromagnetic head, the second electromagnetic head is installed on the tray, and the weighing module can weigh the tray.

[0020] Furthermore, a filter is installed at the air outlet of the fan.

[0021] Furthermore, it also includes a recovery box, which is detachably installed in the collection box. The recovery box is provided with a magnet sheet, and the magnetic attraction mechanism can be moved above the recovery box.

[0022] Furthermore, a display is installed on the collection box, and the display is connected to the weighing mechanism and the fan through a control module. The display at least displays the weighing data of the weighing mechanism and the operating data of the fan.

[0023] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0025] FIG1 is a schematic diagram of the external structure of the present invention;

[0026] FIG2 is a schematic diagram of the internal state of the present invention in an inhalation state;

[0027] FIG3 is a schematic diagram of the internal state of the ferromagnetic object in the transfer state of the present invention;

[0028] FIG4 is a schematic structural diagram of a collecting mechanism of the present invention;

[0029] FIG5 is a schematic structural diagram of the air suction mechanism of the present invention.

[0030] Reference numerals:

[0031] Collection box 100; opening 110; display 120;

[0032] Collection mechanism 200; magnetic plate assembly 210; bracket 211; permanent magnet plate 212; second air duct plate 213; operating cylinder 214; first driving cylinder 220;

[0033] Suction mechanism 300; fan 310; first air duct plate 320; wave surface 321; air duct 330; air inlet 331; air outlet 332;

[0034] Weighing mechanism 400; weighing module 410; tray 420;

[0035] Magnetic attraction mechanism 500; second driving cylinder 510; driving slide rail 520; first electromagnetic head 530;

[0036] Recycling box 600. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, examples of which 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 intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0038] The present invention relates to a ferromagnetic material collection device, which is primarily used in a lithium battery positive electrode material workshop environment to detect the ferromagnetic content in the workshop ambient air. The ferromagnetic material collection device includes a collection box 100, a collection mechanism 200, an air suction mechanism 300, a weighing mechanism 400, and a magnetic attraction mechanism 500.

[0039] As shown in Figures 1 and 3, the collection box 100 can be, but is not limited to, a rectangular box-shaped structure. An opening 110 is opened on one side wall of the collection box 100, and the opening 110 can be opened in a rectangular shape along the height direction of the collection box 100. As shown in Figures 2 and 3, the collection mechanism 200 is installed inside the collection box 100, and the collection mechanism 200 includes a magnetic plate group 210 with a magnetic attraction function. The magnetic plate group 210 can be magnetically attracted by an electromagnet or a permanent magnet. The magnetic plate group 210 is movably installed inside the collection box 100, and the magnetic plate group 210 can move toward or away from the opening 110. When the magnetic plate group 210 moves to the opening 110, the magnetic plate group 210 can seal the opening 110. At this time, the magnetic plate group 210 cooperates with the opening 110 to form a sealed state. The suction mechanism 300 includes a fan 310 and a first air duct plate 320. The first air duct plate 320 is installed on the outside of the collection box 100 and covers the opening 110. The first air duct plate 320 can be in the shape of a U-shaped track. The first air duct plate 320 vertically covers the opening 110, and the height dimensions of the first air duct plate 320 and the opening 110 match. Inlets and outlets are formed between the upper and lower ends of the first air duct plate 320 and the box wall of the collection box 100. The inlets and outlets can also be opened directly at any position on the first air duct plate 320. As shown in Figure 2, when the magnetic plate group 210 moves to the closed state, an air duct 330 with open upper and lower ends is formed between the magnetic plate group 210 and the first air duct plate 320. The inlets and outlets at the upper and lower ends of the first air duct plate 320 are the inlets and outlets of the air duct 330. The fan 310 is installed at the upper end of the air duct 330, and the lower end of the air duct 330 serves as the air inlet 331. The fan 310 is started, and the air in the environment is drawn upward through the lower end of the air duct 330. When the air flow passes through the air duct 330, under the magnetic attraction of the magnetic plate group 210, the ferromagnetic objects in the air flow are adsorbed on the surface of the magnetic plate group 210 facing the side of the air duct 330, and the air flow flows through the fan 310 from the upper end of the air duct 330 and is discharged. During the flow of the air flow in the air duct 330, the air flow is in full contact with the side of the magnetic plate group 210 facing the air duct 330. The weighing mechanism 400 and the magnetic attraction mechanism 500 are installed in the collection box 100. The magnetic attraction mechanism 500 can move in the collection box 100, and the magnetic attraction mechanism 500 adopts the magnetic attraction method of an electromagnet. As shown in Figure 3, after the fan 310 has been running for a certain period of time and then stops, the magnetic plate assembly 210 moves away from the opening 110 of the collection box 100 and moves into the collection box 100, with the surface of the magnetic plate assembly 210 holding the ferromagnetic object facing the magnetic mechanism 500. The magnetic mechanism 500 moves to the attraction surface of the magnetic plate assembly 210, attracting the ferromagnetic object on the surface of the magnetic plate assembly 210. The magnetic mechanism 500 then moves above the weighing mechanism 400. The magnetic mechanism 500 is powered off to eliminate the electromagnetic effect, and the ferromagnetic object falls into the weighing mechanism 400 for weighing. The weighing mechanism 400 automatically calibrates itself to zero before weighing.Thereafter, the content of ferromagnetic materials in the workshop environment air is determined based on the operating time, air volume and other parameters of the fan 310, combined with the weighing results, and the workshop environment is improved according to the content of magnetic materials in the environment. The ferromagnetic material collection device of the present invention utilizes the magnetic plate group 210 in conjunction with the suction mechanism 300 to cleverly form an air duct 330 to increase wind pressure; the magnetic plate group 210 is part of the air duct 330, and the ferromagnetic materials are fully separated from the air under the magnetic attraction of the magnetic plate group 210. Some dust in the air flow will adhere to the surface of the magnetic plate group 210, and then the magnetic mechanism 500 will be used to transfer and weigh the ferromagnetic materials on the magnetic plate group 210, thereby improving the detection accuracy of ferromagnetic materials in the air.

[0040] As shown in Figure 3, the opening 110 is formed in the longitudinal wall of the collection box 100. This longitudinal wall can be one of the front, rear, left, or right sides of the collection box 100. The opening 110 is rectangular and extends along the height of the collection box 100. It can extend from the upper portion of the wall to the middle and lower portion of the wall. As shown in Figure 5, the first air duct plate 320 is elongated and has a U-shaped cross-section. An air inlet 331 is formed between the lower end of the first air duct plate 320 and the wall, and the air inlet 331 is open downward. An air outlet 332 is formed between the upper end of the first air duct plate 320 and the wall, and the fan 310 is mounted at the air outlet 332. Airflow enters the air duct 330 from the air inlet 331. When the fan 310 stops operating, dust remaining in the air duct 330 can be discharged downward from the air inlet 331 by its own weight or by striking the first air duct plate 320 with a tool. Furthermore, the side of the first air duct plate 320 facing the air duct 330 is configured as a wave surface 321. That is, the wave surface 321 of the first air duct plate 320 faces the opening 110. The opening 110 is vertically opened on the collection box 100, and the first air duct plate 320 is installed vertically. The ripples on the wave surface 321 are distributed along the height direction of the first air duct plate 320, and the crest and trough of each wave are horizontally arranged. The flow direction of the airflow in the air duct 330 is perpendicular to the waves on the wave surface 321. The airflow in the air duct 330 forms turbulent flow under the action of the wave surface 321 and impacts the magnetic plate group 210, so that the ferromagnetic objects in the airflow are fully adsorbed on the surface of the magnetic plate group 210. At the same time, under the action of the airflow impact, the long-term adhesion of non-ferromagnetic objects such as dust to the magnetic plate group 210 is reduced, thereby achieving a self-cleaning effect. Furthermore, a filter is installed at the air outlet of the fan 310. After the air flows through the fan 310, dust in the air is adsorbed by the filter. The filter is replaced after a certain working cycle.

[0041] As shown in FIG4 , the magnetic plate assembly 210 has at least two layers of plates, one layer of which is a permanent magnet plate 212, and the other layer of which is a second air duct plate 213. The second air duct plate 213 is non-magnetic and can be made of materials such as plastic, rubber, or metal that does not contain ferromagnetic substances. The permanent magnet plate 212 and the second air duct plate 213 are of a flat plate structure. The magnetic plate assembly 210 also includes a bracket 211 and an operating cylinder 214. The permanent magnet plate 212 and the second air duct plate 213 are both mounted on the bracket 211. The large planes of the permanent magnet plate 212 and the second air duct plate 213 are parallel to each other, and the two can move closer or farther relative to each other on the bracket 211. Alternatively, the second air duct plate 213 is fixed to the bracket 211, and the permanent magnet plate 212 is movably mounted on the bracket 211 through a structure such as a slide groove. The telescopic end of the operating cylinder 214 is connected to the permanent magnet plate 212, and the permanent magnet plate 212 is driven to move by the operating cylinder 214. As shown in Figure 2, when the magnetic plate group 210 covers the opening 110, the second air duct plate 213 covers the opening 110, and the second air duct plate 213 completely closes the opening 110, forming an air duct 330 in conjunction with the first air duct plate 320. The permanent magnet plate 212 faces the inside of the collection box 100, and the permanent magnet plate 212 does not directly contact the airflow in the air duct 330. The operating cylinder 214 drives the permanent magnet plate 212 to fit on the plane of the second air duct plate 213 facing the inside of the collection box 100. By utilizing the magnetic effect of the permanent magnet plate 212, the ferromagnetic material flowing through the air duct 330 is adsorbed on the surface of the second air duct plate 213 facing the side of the air duct 330. As shown in Figure 3, after the fan 310 stops running, the magnetic plate group 210 moves away from the opening 110 and into the collection box 100. At this time, the surface of the second air duct plate 213 adsorbing the ferromagnetic material faces upward. The magnetic attraction mechanism 500 moves to the top of the second air duct plate 213, and the operating cylinder 214 drives the permanent magnet plate 212 to leave the second air duct plate 213, reducing the magnetic attraction of the permanent magnet plate 212 to the ferromagnetic objects on the second air duct plate 213. The magnetic attraction mechanism 500 fully absorbs the ferromagnetic objects on the second air duct plate 213. The overall movement of the magnetic plate group 210 in the collection box 100 can be driven by the first driving cylinder 220. Specifically, the lower end of the bracket 211 on the magnetic plate group 210 is hinged to the inner wall of the collection box 100 through a rotating shaft, preferably hinged at the lower end position near the opening 110. The lower end of the first driving cylinder 220 is hinged to the bottom of the collection box 100, and the driving end of the first driving cylinder 220 is hinged to the bracket 211. The first driving cylinder 220 is used to drive the magnetic plate group 210 to swing as a whole in the collection box 100, and the magnetic plate group 210 can be quickly covered or left from the opening 110.

[0042] As shown in Figures 2 and 3, the magnetic attraction mechanism 500 includes a second drive cylinder 510, a drive rail 520, and a first electromagnetic head 530. The first electromagnetic head 530 constitutes the electromagnetic structure of the magnetic attraction mechanism 500. The drive rail 520 is installed horizontally within the collection box 100. The "horizontal" mentioned above refers to a horizontal orientation, which depends on the specific relative positions of the weighing mechanism 400 and the magnetic plate assembly 210. In this embodiment, the opening 110 is located on the right longitudinal wall of the collection box 100. The magnetic plate assembly 210 is located on the right side of the collection box 100, and the weighing mechanism 400 is located on the left side of the magnetic plate assembly 210. Therefore, the drive rail 520 is horizontally arranged in the left-right direction. The second drive cylinder 510 is mounted on a drive rail. The drive rail can be driven by a motor via a screw, belt, or chain. The first electromagnetic head 530 is mounted on the telescopic shaft of the second drive cylinder 510. When the magnetic plate assembly 210 leaves the opening 110, the surface of the magnetic plate assembly 210 that attracts the ferromagnetic object faces upward. The magnetic plate assembly 210 and the weighing mechanism 400 are both located below the magnetic mechanism 500. The second drive cylinder 510, together with the first electromagnetic head 530, moves above the magnetic plate assembly 210. Then, the second drive cylinder 510 drives the first electromagnetic head 530 to descend close to the magnetic plate assembly 210. The first electromagnetic head 530 is energized to generate a magnetic force that attracts the ferromagnetic object on the magnetic plate assembly 210. Furthermore, under the movement of the drive guide rail, the first electromagnetic head 530 moves horizontally above the magnetic plate assembly 210, fully attracting the ferromagnetic object on the magnetic plate assembly 210, and then moves above the weighing mechanism 400. The first electromagnetic head 530 is de-energized and demagnetized, and the ferromagnetic object detaches from the first electromagnetic head 530 and falls into the weighing mechanism 400.

[0043] Specifically, the weighing mechanism 400 includes a weighing module 410 and a tray 420, and a second electromagnetic head (not shown in the figure) can be installed on the tray 420. The weighing module 410 supports the second electromagnetic head and the tray 420. When the magnetic attraction mechanism 500 moves above the weighing mechanism 400, the first electromagnetic head 530 of the magnetic attraction mechanism 500 is powered off, and the second electromagnetic head of the weighing mechanism 400 is powered on. Under the magnetic attraction of the second electromagnetic head, the ferromagnetic object on the magnetic attraction mechanism 500 falls quickly and stably onto the tray 420. Before weighing, the second electromagnetic head is powered off, and the weighing module 410 obtains the weight difference before and after the ferromagnetic object falls onto the tray 420.

[0044] As shown in Figure 2, a recovery box 600 is provided on the collection box 100, and the recovery box 600 is located on the side wall of the collection box 100 opposite to the suction mechanism 300. The recovery box 600 can pass through the box wall of the collection box 100 and be placed into the collection box 100. A magnet sheet (not shown in the figure) is installed on the recovery box 600. When the weighing mechanism 400 completes weighing, the magnetic attraction mechanism 500 re-absorbs the ferromagnetic material in the weighing mechanism 400, and then the magnetic attraction mechanism 500 moves to the top of the recovery box 600 and drops the ferromagnetic material into the recovery box 600. The recovery box 600 strengthens the effect of the ferromagnetic material from being separated from the magnetic attraction mechanism 500 through the ferromagnetic sheet. After a certain period of time, the recovery box 600 is taken out for cleaning.

[0045] Furthermore, as shown in FIG1 , a display 120 is mounted on the collection box 100. A control module is mounted on the display 120, and the control module is connected to the fan 310 and the weighing mechanism 400. The display 120 displays the weighing data of the weighing mechanism 400 and the operating data of the fan 310, such as the exhaust time, wind speed, and air volume.

[0046] In this specification, "description" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A ferromagnetic material collection device for lithium battery positive electrode material workshop environment, characterized in that: include: A collection box (100), wherein an opening (110) is provided on a wall of the collection box (100); A collecting mechanism (200) is installed in the collecting box (100), and the collecting mechanism (200) includes a magnetic plate group (210) that can move relative to the opening (110). When the magnetic plate group (210) moves to the opening (110), the magnetic plate group (210) is used to cooperate with the opening (110) to form a closed state; An air suction mechanism (300) comprises a fan (310) and a first air duct plate (320), wherein the first air duct plate (320) is installed outside the opening (110), an air duct (330) is formed between the first air duct plate (320) and the magnetic plate assembly (210) in the closed state, and the fan (310) is installed at one end of the air duct (330); a weighing mechanism (400) installed in the collection box (100); as well as A magnetic attraction mechanism (500) is installed in the collection box (100), and the magnetic attraction mechanism (500) is used to attract ferromagnetic objects attached to the surface of the magnetic attraction plate group (210) and transfer them to the weighing mechanism (400).

2. The ferromagnetic material collection device for lithium battery positive electrode material workshop environment according to claim 1, characterized in that: The opening (110) is rectangular and is opened on the longitudinal box wall of the collection box (100) and extends along the height direction of the collection box (100); the cross section of the first air duct plate (320) is U-shaped; the first air duct plate (320) is vertically installed on the collection box (100); a downwardly open air inlet (331) is formed between the lower end of the first air duct plate (320) and the outer side wall of the collection box (100); and the fan (310) is installed at the upper end of the first air duct plate (320).

3. The ferromagnetic material collection device for lithium battery positive electrode material workshop environment according to claim 1 or 2, characterized in that: The side surface of the first air duct plate (320) facing the air duct (330) is a wavy surface (321).

4. The ferromagnetic material collection device for lithium battery positive electrode material workshop environment according to claim 1, characterized in that: The magnetic plate group (210) comprises a bracket (211), a permanent magnet plate (212), a second air duct plate (213) without magnetism, and an operating cylinder (214); the second air duct plate (213) and the permanent magnet plate (212) are mounted on the bracket (211); under the driving action of the operating cylinder (214), the permanent magnet plate (212) and the second air duct plate (213) can move relative to each other, such as toward or away from each other; the magnetic plate group (210) is covered at the opening (110) by the second air duct plate (213), and the second air duct plate (213) cooperates with the first air duct plate (320) to form the air duct (330).

5. The ferromagnetic material collection device for lithium battery positive electrode material workshop environment according to claim 1, characterized in that: The collecting mechanism (200) further comprises a first driving cylinder (220), the lower end of the magnetic plate group (210) being hinged in the collecting box (100); the first driving cylinder (220) drives the magnetic plate group (210) to swing in the collecting box (100), and the first driving cylinder (220) drives the magnetic plate group (210) to cover the opening (110); or the first driving cylinder (220) drives the magnetic plate group (210) to leave the opening (110), and makes the surface of the magnetic plate group (210) that attracts ferromagnetic objects face upward in the collecting box (100), and the magnetic attraction mechanism (500) moves above the magnetic plate group (210).

6. The ferromagnetic material collection device for lithium battery positive electrode material workshop environment according to claim 1, characterized in that: The magnetic attraction mechanism (500) comprises a second driving cylinder (510), a driving slide rail (520) and a first electromagnetic head (530); the driving slide rail (520) is transversely mounted in the collection box (100); the second driving cylinder (510) is mounted on the driving slide rail (520) and can move transversely; the first electromagnetic head (530) is mounted on the telescopic shaft of the second driving cylinder (510) and can be raised and lowered.

7. The ferromagnetic material collection device for lithium battery positive electrode material workshop environment according to claim 1, characterized in that: The weighing mechanism (400) comprises a weighing module (410), a tray (420), and a second electromagnetic head, wherein the second electromagnetic head is mounted on the tray (420), and the weighing module (410) can weigh the tray (420).

8. The ferromagnetic material collection device for lithium battery positive electrode material workshop environment according to claim 1, characterized in that: A filter is installed at the air outlet end of the fan (310).

9. The ferromagnetic material collection device for lithium battery positive electrode material workshop environment according to claim 1, characterized in that: It also includes a recovery box (600), which is detachably mounted in the collection box (100). A magnet sheet is provided on the recovery box (600), and the magnetic attraction mechanism (500) can be moved above the recovery box (600).

10. The ferromagnetic material collection device for lithium battery positive electrode material workshop environment according to claim 1, characterized in that: A display (120) is installed on the collection box (100), and the display (120) is connected to the weighing mechanism (400) and the fan (310) through a control module. The display (120) at least displays weighing data of the weighing mechanism (400) and operating data of the fan (310).