Lithium battery positive electrode material deposition device

Abstract

The utility model discloses a lithium battery positive electrode material deposition device, and relates to the technical field of electrode material purification. The device comprises a reaction tank, a plurality of reaction cavities are formed in the reaction tank, a positive electrode reaction part and a negative electrode reaction part are distributed in the reaction tank, the positive electrode reaction part and the negative electrode reaction part respectively penetrate through all the reaction cavities, each reaction cavity is communicated with a feeding pipe, and each reaction cavity is communicated with a discharging pipe; the purpose of efficiently removing copper in the lithium battery positive electrode slurry is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the electrode material purification technical field, specifically, it is a lithium battery positive electrode material deposition device. BACKGROUND

[0002] The copper in the lithium ion power battery used by new energy vehicles can form metal spikes to penetrate the diaphragm during the charging and discharging process of the battery, causing the positive and negative electrodes of the battery to short circuit, and causing the battery to heat up or even catch fire. The raw materials and production process of lithium iron phosphate, the positive electrode material of lithium ion battery, will introduce copper, greatly increasing the risk of battery heating, so specific equipment is needed to remove copper elements from the material.

[0003] The existing treatment device still has the following shortcomings when purifying. Copper elements have no magnetism and cannot be removed by magnetic removal. Lithium iron phosphate material is mainly composed of lithium dihydrogen phosphate, ferrous oxalate and other raw materials. After the above raw materials are subjected to evaporation crystallization process, solid phase is formed, which has large particles and cannot be intercepted by a filtering device. During the preparation process of lithium iron phosphate material, the liquid phase is a slurry mixed with various raw materials and in a non-molten state, has high solid content and certain viscosity, and cannot be intercepted by a filtering device. During the preparation process of lithium iron phosphate material, the solid phase is in powder form and cannot be intercepted by a filtering device. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a lithium battery positive electrode material deposition device to efficiently remove copper from lithium battery positive electrode slurry.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical means:

[0006] A lithium battery positive electrode material deposition device includes a reaction tank, the reaction tank is internally structured with a plurality of reaction cavities, the reaction tank is internally arranged with a positive electrode reaction part and a negative electrode reaction part, the positive electrode reaction part and the negative electrode reaction part respectively pass through all the reaction cavities, each reaction cavity is connected with a feeding pipe, and each reaction cavity is connected with a discharging pipe.

[0007] Preferably, the reaction tank is internally structured with a plurality of partition plates, the partition plates divide the reaction tank to form the reaction cavities, the partition plates are structured with mounting through grooves connecting adjacent two reaction cavities, the positive electrode reaction part and the negative electrode reaction part are mounted in the mounting through grooves, and the positive electrode reaction part and the negative electrode reaction part sequentially pass through all the mounting through grooves.

[0008] Further, the positive electrode reaction part is a long plate-shaped positive electrode, the negative electrode reaction part is a long plate-shaped negative electrode, the positive electrode reaction part and the negative electrode reaction part are arranged in turn and staggered, the positive electrode reaction part and the negative electrode reaction part are vertically arranged in the reaction tank, and the two long sides of the positive electrode reaction part and the negative electrode reaction part are respectively abutted with the upper and lower ends of the mounting through slot.

[0009] Further, the reaction tank is a cylindrical tank body arranged horizontally along an axis, the horizontal two sides of the cylindrical inner cavity of the reaction tank are provided with a supplementary block, one side of the supplementary block is attached to the arc-shaped inner wall of the cylindrical inner cavity, the other side of the supplementary block is configured as a vertical plane structure, the upper and lower ends of the partition plate are attached to the upper and lower arc-shaped surfaces of the cylindrical inner cavity, and the horizontal two ends of the partition plate are respectively attached to the plane structure of the supplementary block.

[0010] Further, the vertical height of the plane structure is greater than the vertical height of the mounting through slot.

[0011] Further, the two ends of the reaction tank located at the positive electrode reaction part or the negative electrode reaction part are configured as an open structure with a cover, the cover is detachably connected with the tank body of the reaction tank, the partition plate is slidably abutted with the inner wall of the reaction tank, the positive electrode reaction part and the negative electrode reaction part are fixedly connected with the partition plate, a plurality of threaded holes are configured on the partition plate, and the threaded holes are arranged between adjacent two positive electrode reaction parts and negative electrode reaction parts.

[0012] In the process of use, the utility model has the following beneficial effects:

[0013] The lithium iron phosphate positive electrode material slurry to be purified is pumped from the bottom feed pipe, the liquid in the reaction tank is gradually increased, and then the reaction tank is filled and discharged from the discharge pipe. In the reaction tank, after the positive electrode reaction part and the negative electrode reaction part are powered, the copper ions in the positive electrode material slurry are reduced by the action of the positive electrode reaction part and the negative electrode reaction part, so that the copper ions in the positive electrode material slurry are deposited on the negative electrode reaction part. A plurality of reaction cavities are formed in the reaction tank, and each reaction cavity has a corresponding feed pipe and discharge pipe, so that in each reaction cavity, most of the materials can move from bottom to top or from top to bottom in a single reaction cavity and react under the action of the positive electrode reaction part and the negative electrode reaction part. Each reaction cavity has the same volume and height, so that when the positive electrode material slurry is treated, even a large amount of positive electrode slurry is treated at one time, all the slurry can be divided into each reaction cavity for the same reaction by pumping at the same time, thereby avoiding the problem that a large amount of slurry moves from the inlet to the outlet in the reaction tank due to the single inlet and outlet direction and single cavity, and the reaction degree is not uniform and the material uniformity is poor. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a sectional structure schematic diagram of the utility model. Figure 1

[0016] Figure 3 It is a front view structural schematic diagram of the utility model. Figure 1

[0017] Figure 4 It is an A-A sectional structure schematic diagram of the utility model. Figure 3

[0018] Figure 5 It is a side view structural schematic diagram of the utility model. Figure 1

[0019] Figure 6 It is a B-B sectional structure schematic diagram of the utility model. Figure 5 Wherein, 1 - reaction tank, 2 - reaction cavity, 3 - positive electrode reaction part, 4 - negative electrode reaction part, 5 - feed pipe, 6 - discharge pipe, 7 - partition plate, 8 - installation through slot, 9 - patch, 10 - cover.

[0020] DETAILED DESCRIPTION In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0023] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0024] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.​​​​

[0025] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, or it is the orientation or position relation of the utility model product when using commonly placed, or it is the orientation or position relation that the person skilled in the art commonly understands, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the limitation of the utility model. In addition, the terms "first", "second" and so on are only used to distinguish the description, and can not be understood as indicating or implying relative importance.

[0026] In the description of the utility model, it also needs to explain, unless otherwise explicitly specified and limited, the terms "set", "mount", "connect", "connect" should be broad understanding, for example, can be fixedly connected, can be detachably connected, or integrally connected;Can be mechanical connection, can be electrical connection;It can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0027] Please refer to Figure 1 As shown in figure 6, a kind of lithium battery positive electrode material deposition device, including reaction tank 1, the reaction tank 1 is structured with several reaction cavities 2, the reaction tank 1 is arranged with positive electrode reaction part 3 and negative electrode reaction part 4, the positive electrode reaction part 3 and the negative electrode reaction part 4 respectively pass all the reaction cavities 2, each reaction cavity 2 is communicated with feed pipe 5, each reaction cavity 2 is communicated with discharge pipe 6.

[0028] In this way, the lithium iron phosphate positive electrode material slurry to be purified is introduced from the bottom feed pipe 5, and the liquid in the reaction tank 1 gradually increases until the reaction tank 1 is full and then discharged from the discharge pipe 6. In the reaction tank 1, the positive electrode reaction part 3 and the negative electrode reaction part 4 are electrified, and the copper ions in the positive electrode material slurry are reduced and deposited on the negative electrode reaction part 4 by the action of the positive electrode reaction part 3 and the negative electrode reaction part 4. By configuring a plurality of reaction cavities 2 in the reaction tank 1, each reaction cavity 2 has a corresponding feed pipe 5 and discharge pipe 6, so that in each reaction cavity 2, most of the material can move from bottom to top or from top to bottom in a single reaction cavity 2, and react under the action of the positive electrode reaction part 3 and the negative electrode reaction part 4. Each reaction cavity 2 has the same volume and height, so that when the positive electrode material slurry is treated, even if a large amount of positive electrode slurry is treated at one time, all the slurry can be divided into each reaction cavity 2 for the same reaction by simultaneously introducing the material, thereby avoiding the problem of uneven reaction and poor material uniformity caused by the single direction of feeding and discharging and the single cavity of the reaction tank 1.

[0029] Specifically, a plurality of partition plates 7 are configured in the reaction tank 1, which divide the reaction tank 1 into the reaction cavities 2, the partition plates 7 are configured with mounting through grooves 8 that communicate adjacent two reaction cavities 2, the positive electrode reaction part 3 and the negative electrode reaction part 4 are mounted in the mounting through grooves 8, and the positive electrode reaction part 3 and the negative electrode reaction part 4 pass through all the mounting through grooves 8 in sequence.

[0030] In this way, the mounting through grooves 8 are used to support the positive electrode reaction part 3 and the negative electrode reaction part 4, which not only allows the reaction cavities 2 to communicate with each other and the slurry to exchange with each other, but also allows the long positive electrode reaction part 3 and the negative electrode reaction part 4 to be made, avoiding the bending of the positive electrode reaction part 3 and the negative electrode reaction part 4 under their own gravity during long-term use of the device.

[0031] More specifically, the positive electrode reaction part 3 is a long plate-shaped positive electrode, the negative electrode reaction part 4 is a long plate-shaped negative electrode, the positive electrode reaction part 3 and the negative electrode reaction part 4 are arranged in sequence and staggered, the positive electrode reaction part 3 and the negative electrode reaction part 4 are vertically arranged in the reaction tank 1, and the two long sides of the positive electrode reaction part 3 and the negative electrode reaction part 4 respectively abut the upper and lower ends of the mounting through grooves 8.

[0032] Further, the reaction tank 1 is a cylindrical tank body arranged horizontally along the axis, and the cylindrical inner cavity of the reaction tank 1 is provided with a supplementary block 9 on the horizontal two sides, one side of the supplementary block 9 is attached to the arc-shaped inner wall of the cylindrical inner cavity, and the other side of the supplementary block 9 is configured as a vertical plane structure, the upper and lower ends of the partition plate 7 are attached to the upper and lower arc-shaped surfaces of the cylindrical inner cavity, and the horizontal two ends of the partition plate 7 are attached to the plane structure of the supplementary block 9 respectively.

[0033] In this way, the cylindrical tank body is used to improve the pressure maintaining capacity of the whole tank body, and the supplementary block 9 arranged on the horizontal two sides of the cylindrical inner cavity can avoid the slurry flowing along the arc-shaped surfaces on the horizontal two sides of the cylindrical inner cavity when moving upward from bottom to top, so that the slurry near the horizontal arc-shaped surface cannot flow directly upward and flows into the tank body, which causes the processing time to be too long and the slurry to be processed unevenly.

[0034] Specifically, the vertical height of the plane structure is greater than the vertical height of the mounting groove 8.

[0035] Further, the reaction tank 1 is arranged at the two ends of the positive electrode reaction part 3 or the negative electrode reaction part 4 in an open structure with a cover 10, the cover 10 is detachably connected to the tank body of the reaction tank 1, the partition plate 7 is in sliding abutment with the inner wall of the reaction tank 1, the positive electrode reaction part 3 and the negative electrode reaction part 4 are fixedly connected to the partition plate 7, and a plurality of threaded holes are arranged on the partition plate 7 and located between adjacent positive electrode reaction part 3 and negative electrode reaction part 4.

[0036] In this way, on the one hand, the cover 10 can be detached, and then the partition plate 7, the positive electrode reaction part 3 and the negative electrode reaction part 4 can be pushed or pulled out of the reaction tank 1, so as to facilitate the maintenance of the reaction part and the cleaning of the inner wall of the reaction tank 1. Moreover, the plurality of reaction cavities 2 formed by the partition plate 7 can be matched with the baffle, the mounting groove 8 between the positive electrode reaction part 3 and the negative electrode reaction part 4 is blocked by the baffle, and the baffle is matched and positioned with the partition plate 7 by mounting bolts on the baffle and cooperating with the threaded holes, so that the plurality of connected reaction cavities 2 can be independent of each other, and different slurries can be blown into different reaction cavities 2, so as to improve the reaction adaptability of the product device. Moreover, the same slurry can be used in different reaction cavities 2 at different times by using only one device, so as to quickly obtain the best reaction conditions through tests, thereby improving the production efficiency.

[0037] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lithium battery cathode material deposition apparatus, characterized in that, The reaction vessel includes a reaction tank (1), which has several reaction chambers (2). A positive electrode reaction section (3) and a negative electrode reaction section (4) are arranged inside the reaction tank (1). The positive electrode reaction section (3) and the negative electrode reaction section (4) pass through all the reaction chambers (2). Each reaction chamber (2) is connected to a feed pipe (5) and each reaction chamber (2) is connected to a discharge pipe (6).

2. The lithium battery cathode material deposition apparatus according to claim 1, characterized in that, The reaction vessel (1) is constructed with several partition plates (7), which divide the reaction vessel (1) into reaction chambers (2). The partition plates (7) are constructed with mounting slots (8) that connect two adjacent reaction chambers (2). The positive electrode reaction part (3) and the negative electrode reaction part (4) are both installed in the mounting slots (8). The positive electrode reaction part (3) and the negative electrode reaction part (4) pass through all the mounting slots (8) in sequence.

3. The lithium battery cathode material deposition apparatus according to claim 2, characterized in that, The positive electrode reaction section (3) is a long plate-shaped positive electrode, and the negative electrode reaction section (4) is a long plate-shaped negative electrode. The positive electrode reaction section (3) and the negative electrode reaction section (4) are arranged alternately in sequence. The positive electrode reaction section (3) and the negative electrode reaction section (4) are both vertically arranged in the reaction tank (1). The two long sides of the positive electrode reaction section (3) and the negative electrode reaction section (4) respectively abut against the upper and lower ends of the mounting through groove (8).

4. The lithium battery cathode material deposition apparatus according to claim 2, characterized in that, The reaction vessel (1) is a cylindrical vessel with its axis set horizontally. The cylindrical inner cavity of the reaction vessel (1) is equipped with a patch (9) on both horizontal sides. One side of the patch (9) is attached to the arc-shaped inner wall of the cylindrical inner cavity, and the other side of the patch (9) is constructed as a vertical planar structure. The upper and lower ends of the partition plate (7) are attached to the upper and lower arc-shaped surfaces of the cylindrical inner cavity, and the horizontal ends of the partition plate (7) are attached to the planar structure of the patch (9).

5. The lithium battery cathode material deposition apparatus according to claim 4, characterized in that, The vertical height of the planar structure is greater than the vertical height of the mounting slot (8).

6. The lithium battery cathode material deposition apparatus according to claim 2, characterized in that, The reaction vessel (1) is located at both ends of the positive electrode reaction section (3) or the negative electrode reaction section (4) and is constructed as an open structure with a cover (10). The cover (10) is detachably connected to the body of the reaction vessel (1). The partition plate (7) slides against the inner wall of the reaction vessel (1). The positive electrode reaction section (3) and the negative electrode reaction section (4) are both fixedly connected to the partition plate (7). The partition plate (7) has several threaded holes, which are located between two adjacent positive electrode reaction sections (3) and negative electrode reaction sections (4).

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