A battery positive electrode additive production and preparation apparatus

Abstract

This utility model discloses a battery positive electrode additive production and preparation device, specifically relating to the field of battery production technology, for demagnetizing and sieving battery positive electrode additives. It includes a magnetic separation and sieving box, inside which is a rotating support assembly. The rotating support assembly has a non-magnetic rotating rod one and a non-magnetic rotating rod two. A magnetic rod is fixedly connected between the non-magnetic rotating rod one and the non-magnetic rotating rod two. A rotary drive mechanism is provided between the rotating support assembly and the magnetic separation and sieving box, and a follow-up drive assembly is provided between the rotating support assembly and the non-magnetic rotating rod one. A pusher plate is slidably connected to the magnetic rod, and a telescopic drive mechanism is provided between the pusher plate and the magnetic separation and sieving box. A pair of separator seats are fixedly connected to the inner wall of the magnetic separation and sieving box, and a sieve plate is fixedly connected between the pair of separator seats. The sieve plate is located below the magnetic rod. This utility model solves the technical problem of low utilization rate of the demagnetization adsorption surface during the demagnetization process of battery positive electrode additives, which leads to an increased frequency of adsorption material removal.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and more specifically, to a battery positive electrode additive production and preparation device. Background Technology

[0002] Lithium-ion batteries possess advantages such as high voltage, high specific energy density, long cycle life, low self-discharge, and safety with no memory effect. However, with the advancement of science and technology, the requirements for lithium-ion batteries are trending towards higher energy density. Currently, the energy density of traditional lithium-ion battery cathode materials is approaching its theoretical value, making replenishing the irreversible consumption of lithium ions in the battery the most effective way to improve energy density. The most common lithium replenishment technologies are positive electrode replenishment and negative electrode replenishment. Positive electrode replenishment is safer and more reliable than negative electrode replenishment and is easier to industrialize. Positive electrode lithium replenishing agents are commonly used positive electrode additive materials in lithium-ion batteries.

[0003] For example, patent publication number CN119263360B discloses a method for preparing a high-purity positive electrode lithium supplement material. The preparation method includes the following steps: (1) Lithium source decomposition: At room temperature, the lithium source is placed in a Ni crucible, and in an atmosphere furnace, under the protective atmosphere of nitrogen or argon, the temperature is raised at a certain rate, kept at a certain temperature for a period of time, and then naturally cooled to room temperature. After crushing and pulverizing, a product whose main component is Li2O is obtained; (2) Mixing and sintering: The product obtained in step (1) is mixed evenly with the lithium source and nickel source and sintered. In an atmosphere furnace, under the protective atmosphere of nitrogen or argon, the temperature is raised at a certain rate, kept at a certain temperature for a period of time, and then naturally cooled to room temperature. After crushing and pulverizing; (3) Demagnetization: The material after pulverization in step (②) is demagnetized and sieved to obtain the high-purity positive electrode lithium supplement material.

[0004] Currently, lithium battery lithium replenishment materials require demagnetization during production. The current demagnetization method mainly uses magnetic rods with a cylindrical structure to adsorb and demagnetize. However, since the demagnetization position of the magnetic rod is mostly fixed, the demagnetization adsorption surface is not fully utilized, especially the bottom position of the magnetic rod where the adsorption amount is small. This increases the frequency of material removal and also affects the demagnetization quality. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the problem of low utilization rate of the demagnetization adsorption surface during the demagnetization process of battery positive electrode additives.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a battery positive electrode additive production and preparation device for demagnetizing and sieving battery positive electrode additives, comprising a magnetic separation and sieving box, wherein a rotating support assembly is provided inside the magnetic separation and sieving box, and a non-magnetic rotating rod one and a non-magnetic rotating rod two are provided on the rotating support assembly, and a magnetic rod is fixedly connected between the non-magnetic rotating rod one and the non-magnetic rotating rod two, a rotary drive mechanism is provided between the rotating support assembly and the magnetic separation and sieving box, and a follow-up drive assembly is provided between the rotating support assembly and the non-magnetic rotating rod one; A pusher plate is slidably connected to the magnetic rod, and a telescopic drive mechanism is provided between the pusher plate and the magnetic separation and screening box. A pair of partition seats are fixedly connected to the inner wall of the magnetic separation and screening box, and a screen plate is fixedly connected between the pair of partition seats. The screen plate is located below the magnetic rod.

[0007] In a preferred embodiment, the rotating support assembly includes a support rod, which is fixedly connected to one side of the inner wall of the magnetic separation screening box. One end of the support rod is rotatably connected to a baffle plate one, and the other side of the inner wall of the magnetic separation screening box is rotatably connected to a branch pipe. One end of the branch pipe is fixedly connected to a baffle plate two, which is located inside the magnetic separation screening box. A fixing rod is fixedly connected between the baffle plate one and the baffle plate two. A non-magnetic rotating rod one is rotatably connected to the end face of the baffle plate one, and a non-magnetic rotating rod two is rotatably connected to the end face of the baffle plate two.

[0008] In a preferred embodiment, the rotary drive mechanism includes a servo motor, which is fixedly connected to the outer surface of the magnetic separation and screening box, and a belt drive mechanism is connected between the servo motor and the branch pipe.

[0009] In a preferred embodiment, the follow-up drive assembly includes a fixed frame, which is fixedly connected to the support rod. A gear ring is fixedly connected to the fixed frame, and a gear is meshed on the gear ring. The gear is fixedly connected to one end of the non-magnetic rotating rod.

[0010] In a preferred embodiment, the telescopic drive mechanism includes an electric push rod, which is fixedly connected to the outer surface of the magnetic separation and screening box. A push plate is fixedly connected to the output end of the electric push rod, and a pull rod is fixedly connected to the push plate. One end of the pull rod passes through a baffle plate and is fixedly connected to a fixing plate, which is fixedly connected to the push plate.

[0011] In a preferred embodiment, a guide rod is fixedly connected to the outer surface of the magnetic separation and screening box, and the push plate is slidably connected to the guide rod.

[0012] In a preferred embodiment, the magnetic separation screening box has a feeding port at the top, the distance between a pair of partition seats is less than the length of the feeding port, a guide plate is fixedly connected between the pair of partition seats, the guide plate is located above the screen plate, a collection box is provided below the screen plate, and one end of the collection box passes through the magnetic separation screening box.

[0013] In a preferred embodiment, the magnetic separation sieve box has a demagnetization port on its side, a collection area is provided between the separator and the magnetic separation sieve box, the demagnetization port is connected to the collection area, and a sorting port is provided on the front of the magnetic separation sieve box, the sorting port being located at one end of the sieve plate.

[0014] The technical effects and advantages of this utility model are as follows: 1. This battery positive electrode additive production and preparation device, by setting magnetic rods between baffle one and baffle two, and non-magnetic rotating rod one and non-magnetic rotating rod two can provide rotational support for the magnetic rods. Since there are multiple magnetic rods, and they are arranged in a ring on baffle one and baffle two, under the driving action of the rotation drive mechanism, the multiple magnetic rods can make circular motion in the channel where the battery positive electrode additive falls, so that the multiple magnetic rods can fully contact the battery positive electrode additive. Moreover, since the follow-up drive component can control the rotation of the magnetic rods during the circular motion, the rotating magnetic rods can thoroughly expose the demagnetizing adsorption surface, which can increase the adsorption amount of the magnetic rods and reduce the frequency of adsorption material unloading.

[0015] 2. The battery positive electrode additive production and preparation device has a pusher plate that can slide linearly on the magnetic rod. The lateral movement of the pusher plate can push the magnetic rod to adsorb the material until the adsorbed material is pushed to the position of non-magnetic rotating rod one or non-magnetic rotating rod two. The adsorbed material that loses its magnetic force can be automatically unloaded. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Rear view; Figure 3 This is a cross-sectional view of the magnetic separation and sieving box of this utility model. Figure 4 This is a schematic diagram of the rotating support assembly and magnetic rod of this utility model; Figure 5 This is a schematic diagram of the push plate and telescopic drive mechanism of this utility model.

[0018] The attached diagram is labeled as follows: 1. Magnetic separation and screening box; 2. Support rod; 3. Baffle plate one; 4. Branch pipe; 5. Baffle plate two; 6. Fixed rod; 7. Non-magnetic rotating rod one; 8. Non-magnetic rotating rod two; 9. Magnetic rod; 10. Fixed frame; 11. Gear ring; 12. Gear; 13. Servo motor; 14. Belt drive mechanism; 15. Push plate; 16. Electric push rod; 17. Push plate; 18. Pull rod; 19. Fixed plate; 20. Separator seat; 21. Screen plate; 22. Feed port; 23. Guide rod; 24. Demagnetizing port; 25. Sorting port; 26. Collection box; 27. Guide inclined plate. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] See also Figures 1-5 This utility model provides a battery positive electrode additive production and preparation device for demagnetizing and sieving battery positive electrode additives. It includes a magnetic separation and sieving box 1, with a rotating support assembly inside the magnetic separation and sieving box 1. The rotating support assembly includes a support rod 2, which is fixedly connected to one side of the inner wall of the magnetic separation and sieving box 1. One end of the support rod 2 is rotatably connected to a baffle plate 3, and the other side of the inner wall of the magnetic separation and sieving box 1 is rotatably connected to a branch pipe 4. One end of the branch pipe 4 is fixedly connected to a baffle plate 2 5, which is located inside the magnetic separation and sieving box 1. A fixing rod 6 is fixedly connected between baffle plate 3 and baffle plate 2 5. The rotating support assembly is equipped with a non-magnetic rotating rod 7 and a non-magnetic rotating rod 2 8. The non-magnetic rotating rod 7 is rotatably connected to the end face of baffle plate 3, and the non-magnetic rotating rod 2 8 is rotatably connected to the end face of baffle plate 2 5. A magnetic rod 9 is fixedly connected between the non-magnetic rotating rod 7 and the non-magnetic rotating rod 2 8.

[0021] The first baffle 3, the fixed rod 6, and the second baffle 5 can form a rotating support. There are multiple magnetic rods 9, non-magnetic rotating rods 7 and 8, and the number is the same. Multiple magnetic rods 9 are arranged in a ring on the rotating support. The non-magnetic rotating rods 7 and 8 allow the magnetic rods 9 to rotate and be supported on the rotating support. The multiple magnetic rods 9 are positioned in the feeding area of ​​the battery positive electrode additive. The magnetic rods 9 can demagnetize and adsorb the lithium replenishing agent material that passes through. In this application, the battery positive electrode additive is a lithium replenishing agent material, and the demagnetization step of its magnetic rods 9 is the demagnetization step 3 in the above background technology.

[0022] In this embodiment, a rotary drive mechanism is provided between the rotary support assembly and the magnetic separation screening box 1. The rotary drive mechanism includes a servo motor 13, which is fixedly connected to the outer surface of the magnetic separation screening box 1. A belt drive mechanism 14 is connected between the servo motor 13 and the branch pipe 4.

[0023] The belt drive mechanism 14 consists of a pair of pulleys connected by a belt. The pair of pulleys are fixedly connected to the output shaft of the servo motor 13 and the surface of the branch pipe 4, respectively. By starting the servo motor 13, the servo motor 13 can drive the branch pipe 4 to rotate through the belt drive mechanism 14. The rotation of the branch pipe 4 can drive the rotating bracket to rotate. The rotating bracket can drive multiple magnetic rods 9 to move in a circular motion, so that the multiple magnetic rods can fully contact the lithium replenishing agent material for demagnetization.

[0024] The magnetic strength of the magnetic rod 9 in this application needs to be selected and determined according to the actual specifications of the device. During the rotation of the rotating bracket, the centrifugal force of the adsorbed material on the magnetic rod 9 should be controlled within a range less than the magnetic strength of the magnetic rod 9. The control of the centrifugal force of the adsorbed material is to control the driving speed of the servo motor 13.

[0025] In this embodiment: a follow-up drive group is provided between the rotating support assembly and the non-magnetic rotating rod 7. The follow-up drive assembly includes a fixed frame 10, which is fixedly connected to the support rod 2. A gear ring 11 is fixedly connected to the fixed frame 10, and a gear 12 is meshed on the gear ring 11. The gear 12 is fixedly connected to one end of the non-magnetic rotating rod 7.

[0026] When the rotating bracket formed by the first baffle 3, the fixed rod 6 and the second baffle 5 rotates, the gear 12 can roll on the annular path of the gear ring 11 because the gear ring 11 is fixed. The rolling of the gear 12 can drive the magnetic rod 9 to rotate through the non-magnetic rotating rod 7. The rotating magnetic rod 9 can fully expose the adsorption surface, which can increase the adsorption amount of the magnetic rod 9 for the demagnetizing lithium replenishing material and reduce the frequency of unloading the demagnetizing adsorbed material.

[0027] In this embodiment: a pusher plate 15 is slidably connected to the magnetic rod 9, and a telescopic drive mechanism is provided between the pusher plate 15 and the magnetic separation and screening box 1. The telescopic drive mechanism includes an electric push rod 16, which is fixedly connected to the outer surface of the magnetic separation and screening box 1. A push plate 17 is fixedly connected to the output end of the electric push rod 16, and a pull rod 18 is fixedly connected to the push plate 17. One end of the pull rod 18 passes through the baffle plate 2 5 and is fixedly connected to a fixing plate 19. The fixing plate 19 is fixedly connected to the pusher plate 15.

[0028] A through groove is provided in the middle of the push plate 15, the fixing plate 19 is fixed in the through groove, and the fixing rod 6 is set through the through groove.

[0029] When it is necessary to clean the adsorbed material on the magnetic rod 9, the electric push rod 16 can be extended or retracted. The electric push rod 16 can pull the push plate 15 in sequence through the push plate 17, the pull rod 18 and the fixed plate 19. In this way, the push plate 15 can move laterally in the length direction of the magnetic rod 9 and push the adsorbed material towards the non-magnetic rotating rod 7 or the non-magnetic rotating rod 8. Since the non-magnetic rotating rod 7 or the non-magnetic rotating rod 8 is a non-magnetic area, the adsorbed material can be automatically unloaded in the area of ​​the non-magnetic rotating rod 7 or the non-magnetic rotating rod 8.

[0030] In this embodiment: a guide rod 23 is fixedly connected to the outer surface of the magnetic separation sieve box 1, and a push plate 17 is slidably connected to the guide rod 23.

[0031] The guide rod 23 can be used to guide the push plate 17, so that the push plate 17 can move more stably in a straight line.

[0032] In this embodiment: a pair of separator seats 20 are fixedly connected to the inner wall of the magnetic separation sieve box 1, and a sieve plate 21 is fixedly connected between the pair of separator seats 20. The sieve plate 21 is located below the magnetic rod 9.

[0033] The cross-sectional structure of the separator 20 is formed by cutting a right-angled trapezoid from a rectangular surface. A pair of separators 20 are mirror-arranged in the magnetic separation sieve box 1. The pair of separators 20 can separate the sieving channel for lithium replenishing agent material and the feeding channel for demagnetizing material in the lithium replenishing agent material in the magnetic separation sieve box 1. The sieve plate 21 is inclined. The lithium replenishing agent material falling through the position of the magnetic rod 9 can fall onto the sieve plate 21 for sieving. The specification of the sieve plate 21 is 400 mesh.

[0034] In this embodiment: the top of the magnetic separation screening box 1 is provided with a feeding port 22, the distance between a pair of partition seats 20 is less than the length of the feeding port 22, a guide plate 27 is fixedly connected between the pair of partition seats 20, the guide plate 27 is located above the screen plate 21, and a collection box 26 is provided below the screen plate 21, one end of the collection box 26 passes through the magnetic separation screening box 1.

[0035] The purpose of the spacing between a pair of separator seats 20 being less than the length of the feed port 22 is to prevent the demagnetizing lithium replenishing agent material from entering the demagnetizing material feeding channel. The guide plate 27 and the screen plate 21 are staggered and inclined.

[0036] When the lithium replenishing agent material that needs to be demagnetized is poured into the feed port 22, the magnetic rod 9 can adsorb the demagnetized material in the lithium replenishing agent material. When the demagnetized lithium replenishing agent material falls into the screening channel, the guide plate 27 can guide the lithium replenishing agent material to be screened based on the height of the screen plate 21. The screened lithium replenishing agent material can fall into the collection box 26. The collection box 26 can be pulled and inserted on the magnetic separation screening box 1, which can facilitate the collection of the lithium replenishing agent material screened out by the screen plate 21.

[0037] In this embodiment: a demagnetizing port 24 is provided on the side of the magnetic separation sieve box 1, a collection area is provided between the separator seat 20 and the magnetic separation sieve box 1, the demagnetizing port 24 is connected to the collection area, and a sorting port 25 is provided on the front of the magnetic separation sieve box 1, the sorting port 25 is located at one end of the sieve plate 21.

[0038] The demagnetizing material pushed by the pusher plate 15 can fall at the position of the non-magnetic rotating rod 7 or the non-magnetic rotating rod 8. The fallen demagnetizing material can enter the demagnetizing material feeding channel, i.e. the collection area, and finally be discharged through the demagnetizing port 24. The sorting port 25 is located at the lowest end of the sieve plate 21. The lithium replenishing agent material that fails to meet the standards after sieving can be discharged at the sorting port 25.

[0039] The servo motor 13 and electric push rod 16 mentioned in the text are both electrically connected to the main controller and power supply. The main controller can be a conventional known device such as a computer that performs control, and the existing publicly available power connection technology will not be described in detail in the text.

Claims

1. A battery positive electrode additive production and preparation apparatus, used for demagnetizing and sieving battery positive electrode additives, characterized in that: The system includes a magnetic separation screening box (1), a rotating support assembly is provided inside the magnetic separation screening box (1), a non-magnetic rotating rod one (7) and a non-magnetic rotating rod two (8) are provided on the rotating support assembly, a magnetic rod (9) is fixedly connected between the non-magnetic rotating rod one (7) and the non-magnetic rotating rod two (8), a rotary drive mechanism is provided between the rotating support assembly and the magnetic separation screening box (1), and a follow-up drive assembly is provided between the rotating support assembly and the non-magnetic rotating rod one (7); A pusher plate (15) is slidably connected to the magnetic rod (9). A telescopic drive mechanism is provided between the pusher plate (15) and the magnetic separation sieve box (1). A pair of partition seats (20) are fixedly connected to the inner wall of the magnetic separation sieve box (1). A sieve plate (21) is fixedly connected between the pair of partition seats (20). The sieve plate (21) is located below the magnetic rod (9).

2. The apparatus for producing battery positive electrode additives according to claim 1, characterized in that: The rotating support assembly includes a support rod (2), which is fixedly connected to one side of the inner wall of the magnetic separation screening box (1). One end of the support rod (2) is rotatably connected to a baffle plate (3), and the other side of the inner wall of the magnetic separation screening box (1) is rotatably connected to a branch pipe (4). One end of the branch pipe (4) is fixedly connected to a baffle plate (5), which is located inside the magnetic separation screening box (1). A fixing rod (6) is fixedly connected between the baffle plate (3) and the baffle plate (5). The non-magnetic rotating rod (7) is rotatably connected to the end face of the baffle plate (3), and the non-magnetic rotating rod (8) is rotatably connected to the end face of the baffle plate (5).

3. The apparatus for producing battery positive electrode additives according to claim 2, characterized in that: The rotary drive mechanism includes a servo motor (13), which is fixedly connected to the outer surface of the magnetic separation and screening box (1). A belt drive mechanism (14) is connected between the servo motor (13) and the branch pipe (4).

4. The apparatus for producing and preparing battery positive electrode additives according to claim 3, characterized in that: The follow-up drive assembly includes a fixed frame (10), which is fixedly connected to the support rod (2). A gear ring (11) is fixedly connected to the fixed frame (10), and a gear (12) is meshed on the gear ring (11). The gear (12) is fixedly connected to one end of the non-magnetic rotating rod (7).

5. The apparatus for producing and preparing battery positive electrode additives according to claim 4, characterized in that: The telescopic drive mechanism includes an electric push rod (16), which is fixedly connected to the outer surface of the magnetic separation sieve box (1). The output end of the electric push rod (16) is fixedly connected to a push plate (17), and a pull rod (18) is fixedly connected to the push plate (17). One end of the pull rod (18) passes through the baffle plate (5) and is fixedly connected to a fixing plate (19). The fixing plate (19) is fixedly connected to the push plate (15).

6. The apparatus for producing battery positive electrode additives according to claim 5, characterized in that: The outer surface of the magnetic separation sieve box (1) is fixedly connected to a guide rod (23), and the push plate (17) is slidably connected to the guide rod (23).

7. The apparatus for producing battery positive electrode additives according to claim 1, characterized in that: The magnetic separation screening box (1) has a feeding port (22) at the top. The distance between a pair of partition seats (20) is less than the length of the feeding port (22). A guide plate (27) is fixedly connected between the pair of partition seats (20). The guide plate (27) is located above the screen plate (21). A collection box (26) is provided below the screen plate (21). One end of the collection box (26) passes through the magnetic separation screening box (1).

8. The apparatus for producing battery positive electrode additives according to claim 1, characterized in that: The magnetic separation sieve box (1) has a demagnetization port (24) on its side. A collection area is provided between the separator (20) and the magnetic separation sieve box (1). The demagnetization port (24) is connected to the collection area. The magnetic separation sieve box (1) has a sorting port (25) on its front. The sorting port (25) is located at one end of the sieve plate (21).

Images