CN111960510A - A battery pole piece fixing device and its use method - Google Patents

Abstract

The invention belongs to the field of wastewater treatment devices, and in particular relates to a battery pole piece fixing device and a method for using the same, comprising a base plate, multiple pairs of fixing columns, and multiple rows of distribution plates. It is arranged between a pair of fixed columns, and the adjacent two rows of shunt plates overlap in the first direction and are staggered in the second direction. When one end of the battery pole piece is fixed on one of the pair of fixed columns , when the other end is fixed on another fixed column after bypassing one column of split plates in turn, the battery pole pieces circle between the two columns of split plates in turn to form a wave shape, which increases the flow of sewage, reduces the flow rate, and increases the amount of sewage and The contact time of the battery pole piece improves the treatment efficiency of pollutants. The device is beneficial to the anti-hydraulic impact of the pole piece, increases the contact area between the pole piece and the water flow, and improves the catalytic degradation effect.

Description

A battery pole piece fixing device and its use method

technical field

The invention belongs to the field of wastewater treatment devices, and in particular relates to a battery pole piece fixing device and a use method thereof.

Background technique

Lithium-ion batteries (LIBs) are widely used due to their high energy density and long service life. Lithium-ion batteries are mainly composed of five parts: positive electrode, negative electrode, separator, electrolyte and shell. The positive electrode is generally composed of aluminum foil and lithium cobalt oxide, lithium manganate, nickel cobalt manganese lithium and other materials, and the negative electrode is composed of copper foil and graphite. If used batteries are discarded directly, the heavy metals and electrolytes they contain will cause great harm to the environment. If it can be recycled and reused, it will greatly alleviate the current shortage of resources and environmental problems.

Advanced oxidation technology based on sulfate radicals (SR-AOPs) is an emerging technology for the treatment of refractory organic pollutants in water in recent years. Transition metals and their oxides (Co, Cu, Fe, and Mn-based, etc.) are often used as catalysts Activation of PMS/PS generates free radicals to degrade organic pollutants in water. However, there are some problems with traditional catalysts. For example, the synthesized heterogeneous catalysts are mostly in the form of powder, which is difficult to separate and recover from the aqueous reaction system after use. Moreover, the catalyst synthesis process is complicated and the cost of large-scale production is limited. its application. Considering that the positive electrode active materials of lithium ion batteries (LIBs) are mainly lithium transition metal oxides and the special stable structure of the positive electrode plates (active materials, carbon additives and binders are uniformly coated on the current collector aluminum foil to form a stable structure), this The waste LIBs electrode materials can be recycled as catalysts in SR-AOPs to activate PMS to degrade organic pollutants. However, at present, the use of waste battery electrode materials as catalysts for wastewater treatment has disadvantages such as less water per treatment, low catalytic efficiency, and difficulty in recycling the catalyzed pole pieces, which is limited to laboratory-scale use.

Based on the above reasons, it is necessary to provide an industrialized device that can use waste battery electrode materials as catalysts for wastewater treatment, which can not only solve the problem of reuse of waste batteries, but also better solve the single treatment when the electrode materials are used as catalysts. problems such as low water volume and low catalytic efficiency.

SUMMARY OF THE INVENTION

The present invention is carried out to solve the above problems, and the purpose is to provide a battery pole piece fixing device and a method of using the same. .

The present invention provides a battery pole piece fixing device, which is used to fix the battery pole piece in sewage, and has the following characteristics, including: a base plate; a plurality of pairs of fixing columns, which are arranged on the base plate and are used for fixing the battery pole pieces; and A multi-column distribution plate, vertically arranged on the bottom plate, is used to divert the sewage, wherein a pair of fixed columns includes two fixed columns, one fixed column is vertically arranged at the edge of one side of the bottom plate, and the other is fixed The columns are relatively vertically arranged at the edge of the other side of the bottom plate, one end of the battery pole piece is fixed on a fixed column, and the other end is fixed on another fixed column. The diverter plates are arranged between a pair of fixed columns, the connecting line between the pair of fixed columns is the first direction, the direction perpendicular to the bottom plate in the plane of the bottom plate is the second direction, and the adjacent two rows of diverter plates are in the first direction. The parts overlap in one direction, and are staggered in sequence in the second direction, so that the battery pole pieces form a wave shape when the battery pole pieces circle the shunt plates in sequence between the two columns of shunt plates.

The battery pole piece fixing device provided by the present invention may also have the following feature: wherein the opposite inner sides of the pair of fixing columns are provided with pole piece installation grooves, and the pole piece installation grooves are used to fix the battery pole pieces.

The battery pole piece fixing device provided by the present invention may also have the following feature: wherein, along the length direction of the fixing column, the fixing column is provided with three pole piece installation grooves, and the two adjacent pole piece installation grooves are between the two adjacent pole piece installation grooves. 2cm-5cm apart.

The battery pole piece fixing device provided by the present invention may also have the following characteristics: wherein, the shunt plate is an arc-shaped shunt plate, and the concave surfaces of all the arc-shaped shunt plates in each row are oriented in the same direction, and are arranged equidistantly in the same direction. on the bottom plate.

The battery pole piece fixing device provided by the present invention may also have the following feature: wherein, the curvature radius of the arc-shaped shunt plate is 125 mm, and the radian is 150°.

In the battery pole piece fixing device provided by the present invention, it may also have the following characteristics: wherein, rounded rectangular shunt holes are opened at the edges of the two sides perpendicular to the arc-shaped shunt plate and the bottom plate, and four rounded rectangular shunt holes are provided. Corners are rounded.

The battery pole piece fixing device provided by the present invention can also have the following characteristics: wherein, the bottom plate is provided with a plurality of sewage holes, and the bottom plate is also provided with a plurality of evenly distributed and parallel to each other. The middle position of the bottom of each distribution plate in the plate is fixedly connected with the corresponding distribution plate fixing strip.

The battery pole piece fixing device provided by the present invention may also have such features, further comprising: a frame column and a top frame, wherein the bottom plate is a rectangular plate, the four frame columns are respectively arranged at the four corners of the rectangular plate, and the top frame is A rectangular frame, the four corners of the rectangular frame are respectively fixedly connected with a frame column.

The present invention also provides a method for using the battery pole piece fixing device, which has the characteristics of including the following steps: installing the battery pole piece on the battery pole piece fixing device, and then placing the battery pole piece fixing device in a sewage pool , so that the sewage flows through the battery pole pieces.

In the method for using the battery pole piece fixing device provided by the present invention, it can also have the following feature: wherein, when a plurality of battery pole piece fixing devices are put into the sewage pool, the direction of the distribution plate is the same, so that the sewage flows through the plurality of battery pole piece fixing devices. Battery pole piece fixing device.

The role and effect of the invention

According to the battery pole piece fixing device and its using method provided by the present invention, it is used to fix the battery pole piece in sewage, and includes a bottom plate, a plurality of pairs of fixed columns, and a plurality of rows of shunt plates, and the plurality of pairs of fixed columns are respectively located on both sides of the bottom plate. , each column of shunt plates includes a plurality of shunt plates arranged between a pair of fixed columns, and the adjacent two columns of shunt plates partially overlap in the first direction and are staggered in the second direction. Therefore, when the battery pole pieces are placed One end of the battery is fixed on one fixed column of the pair, and when the other end is fixed on the other fixed column after bypassing one column of shunt plates in turn, the battery pole pieces circle between the two columns of shunt plates in turn to form a wave shape. The battery pole pieces placed in the shape increase the flow of sewage, which can reduce the flow rate and increase the contact time between the sewage and the battery pole pieces, thereby maximizing the contact area between the sewage and the battery pole pieces and improving the treatment efficiency of pollutants. In addition, the shunt plate acts as a site for shunt sewage and supporting the battery pole pieces, and the orderly cross arrangement is beneficial to the fixing of the battery pole pieces.

The device utilizes a reasonable cathode plate mounting structure design, which not only achieves efficient degradation of organic wastewater, but also simple and quick recovery after the catalytic activity of the cathode plate fails, and the mounting structure can complete the rapid pole plate replacement. The complete pole piece is bent and folded and installed in the designed catalytic degradation box, and then the catalytic degradation box is immersed in the organic sewage treatment tank. The special structural design is beneficial to the pole piece against hydraulic shock and increases the contact between the pole piece and the water flow. Contact area, thereby improving the catalytic degradation effect. This box structure can be used alone or stacked. It is an advanced modular design, and the number can be adjusted according to different wastewater treatment needs. The device can solve the problems of small sewage treatment, low degradation efficiency, and difficult recycling of used pole pieces when the current pole piece material is used as a catalyst. research value.

Description of drawings

1 is a schematic diagram of the overall structure of a battery pole piece fixing device in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the arc-shaped shunt plates arranged on the bottom plate according to the embodiment of the present invention;

Fig. 3 is the structural representation of the bottom plate in the embodiment of the present invention;

4 is a schematic structural diagram of a fixed column in an embodiment of the present invention;

Fig. 5 is the unfolded schematic diagram of the arc-shaped shunt plate in the embodiment of the present invention;

6 is a schematic diagram of a battery pole piece fixing device with a battery pole piece fixed in an embodiment of the present invention; and

7 is a plan view of a battery pole piece fixing device to which a battery pole piece is fixed in an embodiment of the present invention.

Detailed ways

In order to make it easier to understand the technical means, creative features, goals and effects achieved by the present invention, a battery pole piece fixing device and its use method of the present invention are described in detail below with reference to the embodiments and the accompanying drawings.

<Example>

This embodiment specifically describes the battery pole piece fixing device and the use method thereof.

1 is a schematic diagram of the overall structure of a battery pole piece fixing device in an embodiment of the present invention; FIG. 2 is a schematic structural diagram of the arrangement of arc-shaped shunt plates on the bottom plate in an embodiment of the present invention.

As shown in FIGS. 1 and 2 , the battery pole piece fixing device 100 is in the shape of a cuboid as a whole, and the overall dimensions are 620 mm in length, 483 mm in width, and 221 mm in height.

The battery pole piece fixing device 100 includes a bottom plate 10 , a frame column 20 , a fixing column 30 , a distribution plate 40 , a top frame 50 and a distribution plate fixing bar 60 .

The bottom plate 10 is rectangular, and four frame columns 20 are respectively fixed at four corners of the rectangle and extend vertically upward along the bottom plate 10 .

There are six pairs or 12 fixing columns 30 in total. Two fixing columns 30 in a pair are arranged opposite to each other and are respectively fixed at the edges of both sides of the base plate 10 , forming two rows of fixing columns corresponding to each other on both sides of the base plate 10 . The direction of the connection line between the pair of fixing columns 30 , that is, the width direction of the base plate 10 is the first direction X, and the length direction of the base plate is the second direction Y.

Six fixing columns 30 and two frame columns 20 on each side of the bottom plate 10 are arranged on the bottom plate 10 at equal distances.

In this embodiment, the distribution plate 40 is an arc-shaped distribution plate 40, and there are 7 columns in total, and each column includes 3 arc-shaped distribution plates 40. The three arc-shaped distribution plates 40 are equally spaced along the first direction X on a pair of fixed Between the columns 30, the concave surfaces of all the arc-shaped diverter plates 40 face one direction. The two adjacent rows of flow distribution plates are staggered with each other, partially overlapping in the first direction X, and staggered with each other in the second direction Y. In this embodiment, the distance between the arc-shaped shunt plates in the same row is 15 cm. In practical applications, the distance between the arc-shaped shunt plates can be adjusted according to the size of the water flow to ensure the fixed stability of the battery pole pieces.

The top frame 50 is a rectangular frame parallel to the bottom plate 10 , and the four vertices of the rectangular frame are respectively fixed to the four frame columns 20 . The top frame 50 includes four columns and seven reinforcement columns 501 that make up the frame. The reinforcement column 501 is a cuboid column with a length, width and height of 15mm, 8mm and 452mm respectively, and is respectively fixed at the middle position of a corresponding row of distribution plates 40 .

The diverter plate fixing strips 60 are rectangular strips, and there are 7 strips in total, which are uniformly pasted on the bottom plate 10 and all extend along the first direction X. Each distribution plate fixing strip 60 penetrates through a corresponding row of distribution plates 40 , and the middle position of the bottom of each distribution plate 40 is pasted with the corresponding distribution plate fixing strip.

3 is a schematic structural diagram of a bottom plate in an embodiment of the present invention; FIG. 4 is a structural schematic diagram of a fixed column in an embodiment of the present invention; and FIG.

As shown in Fig. 3-5, the bottom plate 10 is a rectangular parallelepiped plate with a length of 490 mm, a width of 452 mm and a height of 8 mm. A plurality of rows of regularly arranged sewage holes 101 are opened on the bottom plate 10, and the radius of the sewage holes 101 is 17 mm.

The fixed column 30 is a hexagon with a cross section of 8 mm in side length. The opposite inner sides of the pair of fixing columns 30 are provided with three pole piece installation slots 301 arranged vertically. The pole piece installation grooves 301 are arranged in sequence along the length direction of the fixing column 30 , and the distance between two adjacent pole piece installation grooves 301 is 2cm-5cm. In this embodiment, the distance is 2cm. The height of the pole piece installation groove 301 matches the width of the battery pole piece, and is used for installing the battery pole piece.

The curvature radius of the arc-shaped dividing plate 40 is 125mm, and the arc is 150°. Rounded rectangular distribution holes 401 are opened at the edges of the two sides of the arc-shaped distribution plate 40 that are perpendicular to the bottom plate 10 . The rounded rectangular shunt hole 401 has a width of 16 mm and a height of 180 mm. The height direction of the rounded rectangular distribution hole 401 is perpendicular to the bottom plate 10 . The four corners of the rounded rectangular shunt hole 401 are all rounded corners with a radius of 5 mm.

6 is a schematic diagram of a battery pole piece fixing device with a battery pole piece fixed in an embodiment of the present invention; FIG. 7 is a top view of the battery pole piece fixing device with a battery pole piece fixed in an embodiment of the present invention.

As shown in FIGS. 6 and 7 , since each fixing column 30 is provided with three pole piece installation grooves 301 , three battery pole pieces 70 can be vertically installed between a pair of fixing columns. One end of the battery pole piece 70 is installed in a mounting slot 301 on one fixed column 30 of the pair, so that the battery pole piece 70 bypasses the three arc-shaped shunt plates 40 in the corresponding row in turn, and makes them as close as possible. Then insert the other end of the arc-shaped shunt plate 40 into an installation groove 301 of the same level on the other fixing column 30 on the opposite side. According to the same method, the installation of 18 battery pole pieces 70 in 6 columns is completed in sequence.

Since there are 7 rows of arc-shaped shunt plates 40, and two adjacent rows of arc-shaped shunt plates 40 are arranged in a staggered manner, a single battery pole piece 70 forms a wave shape when bypassing each arc-shaped shunt plate 40 in sequence between the two columns of shunt plates.

The following describes how to remove the battery pole piece and the use of the battery pole piece fixing device.

First, the disposal method of used batteries:

Step 1: Use "18650 type" waste lithium battery with a length of 65mm and a diameter of 18mm. The waste battery was placed in a 5 wt% NaCl solution for discharge treatment to remove the remaining power, and the discharge time was 24h.

Step 2: Take out the battery after discharge, put it in a blast drying oven, and dry it at 60°C for 12h.

Step 3: Break the dry battery and take out the positive pole piece. The positive pole piece was quickly placed in anhydrous ethanol to prevent oxidation. Subsequently, the positive electrode piece was rinsed with water, placed in a blast drying oven, and dried at 60° C. for 12 hours, and the obtained positive electrode piece was the battery pole piece in this implementation.

2. How to use the battery pole piece fixing device:

Insert one end of the battery pole piece 70 into the pole piece installation groove 301 of the fixed column 30, and then make the battery pole piece 70 stick to the arc-shaped shunt plate 40 as far as possible to detour between the two columns of shunt plates, and insert the other end into the The pole piece on the opposite side is installed in the slot 301 . In order to improve the utilization efficiency, three battery pole pieces are vertically arranged between each pair of fixed columns. A distance of 2cm is maintained between the battery pole piece and the upper and lower part of the battery pole piece, so that the water flow can pass through and prevent the battery pole piece from being damaged by excessive sewage flow rate. After the battery pole piece is fixed, slowly put the battery pole piece fixing device into the sewage treatment tank until it is completely immersed. Putting persulfate (PS) or persulfate monohydrogen (PMS) into the sewage treatment tank as an oxidant provides sulfate radicals. The box should be placed so that the direction of water flow is the same as the direction of the battery pole pieces. Sewage flows in from the convex side of the split plate, collides with the split plate and is split, and flows out from the rounded rectangular split holes on both sides, making full contact with the battery pole pieces. After the battery pole piece fixing device is immersed in water, under the action of the oxidant and the catalysis of the battery pole piece, a large amount of sulfate radicals are generated in a short time, which react with the pollutants in the water to achieve the effect of degrading sewage. After the treatment is completed or the catalytic activity of the battery pole piece is invalid, the device is taken out, and the failed battery pole piece can be removed conveniently and quickly, and then a new battery pole piece can be replaced to continue the degradation. The method is simple to operate and environmentally friendly.

In practical applications, it can be further optimized. According to different needs, several devices can be used in parallel or in series until all the sewage can pass through the box to maximize the efficiency of sewage degradation. The sewage can also be recycled 2-3 times to maximize the degradation rate.

In the present invention, parallel connection means that a plurality of battery pole piece fixing devices are stacked up and down. In each device, sewage flows in from the convex side of the manifold and flows out from the concave side. Serial connection means that multiple battery pole piece fixing devices are placed in the sewage pool in sequence, so that sewage flows in from the convex side of the manifold of the previous device, flows out from the concave side and flows into the convex side of the manifold of the next device.

In practical applications, the diverter plate can be designed as a rectangular diverter plate, but the arc diverter plate can bear a larger hydraulic load than the rectangular diverter plate.

Actions and Effects of the Embodiments

According to the battery pole piece fixing device provided in this embodiment, it is used to fix the battery pole piece in sewage, and includes a bottom plate, a plurality of pairs of fixed columns, and a plurality of rows of shunt plates. The plurality of pairs of fixed columns are respectively located on both sides of the bottom plate. The shunt plate includes a plurality of shunt plates arranged between a pair of fixed columns, and the adjacent two columns of the shunt plates are partially overlapped in the first direction and staggered in sequence in the second direction. Therefore, when one end of the battery pole piece is fixed On one fixed column of a pair, when one column of shunt plates is bypassed in turn and the other end is fixed on the other fixed column, the battery pole pieces circle between the two columns of shunt plates in turn to form a wave shape. The battery pole piece increases the flow of sewage, which can reduce the flow rate and increase the contact time between the sewage and the battery pole piece, thereby maximizing the contact area between the sewage and the battery pole piece and improving the treatment efficiency of pollutants.

The arc-shaped shunt plate acts as a site for shunt sewage and supporting the battery pole pieces, and the orderly cross arrangement is beneficial to the fixing of the battery pole pieces. The concave surfaces of all the arc-shaped diverting plates in a row face the same direction and are arranged on the bottom plate at equal distances, so that the sewage flows evenly. At the same time, there is a rounded rectangular split hole on the left and right sides of the arc-shaped split plate. The radius of the rounded corner is 5mm, so that the sewage can pass through after being split. For the damage to the splitter plate, the width of the rounded rectangle is 16mm, which can slow down the flow rate of the water flow while ensuring the smooth passage of the water flow, and ensure that the sewage and the catalyst are fully contacted.

The arc-shaped shunt plate is pasted on the fixing strip of the shunt plate, so that there is a gap between the arc-shaped shunt plate and the bottom plate, which is conducive to the passage of water. The direction is the same and plays a certain role in diversion.

The bottom plate, the frame column and the top frame form the frame structure of the whole device. The rectangular bottom plate mainly plays the role of supporting the whole device. At the same time, the circular pores on the bottom plate can also enter and exit the sewage, which plays a certain role of diversion, so that different directions in the sewage pool can be obtained. The sewage is in contact with the pole piece to improve the sewage treatment effect, and the top frame ensures that the device does not deform during the process of treating the sewage.

There are 3 vertically arranged pole piece installation slots on the fixed column, so the battery pole pieces can be arranged vertically in multiple layers to improve the utilization efficiency. A certain distance is maintained between the upper and lower parts to allow water flow to pass through and prevent the pole pieces from being damaged by excessive sewage flow rate. In addition, the pole piece installation groove is convenient for pole piece installation, which is simple to operate and easy to replace.

This device is designed based on the breathing principle of "fish gills", which can realize the full contact between the catalyst and the sewage and improve the catalytic efficiency. The device utilizes a reasonable cathode plate mounting structure design, which not only achieves efficient degradation of organic wastewater, but also simple and quick recovery after the catalytic activity of the cathode plate fails, and the mounting structure can complete the rapid pole plate replacement. The complete pole piece is bent and folded and installed in the designed catalytic degradation box, and then the catalytic degradation box is immersed in the organic sewage treatment tank. The special structural design is beneficial to the pole piece against hydraulic shock and increases the contact between the pole piece and the water flow. Contact area, thereby improving the catalytic degradation effect. This box structure can be used alone or stacked. It is an advanced modular design, and the number can be adjusted according to different wastewater treatment needs. The device can solve the problems of small sewage treatment, low degradation efficiency, and difficult recycling of used pole pieces when the current pole piece material is used as a catalyst. research value.

The above embodiments are preferred cases of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (10)

1. The utility model provides a battery pole piece fixing device for place fixed battery pole piece in sewage, its characterized in that includes:

a base plate;

the plurality of pairs of fixing columns are arranged on the bottom plate and used for fixing the battery pole pieces; and

a plurality of rows of flow distribution plates vertically arranged on the bottom plate and used for distributing the sewage,

wherein, the pair of the fixed columns comprises two fixed columns, one fixed column is vertically arranged at the edge of one side of the bottom plate, the other fixed column is oppositely and vertically arranged at the edge of the other side of the bottom plate, one end of the battery pole piece is fixed on one fixed column, the other end is fixed on the other fixed column,

each column of the splitter plate comprises a plurality of splitter plates which are arranged between a pair of the fixing columns, the connecting line between the pair of the fixing columns is a first direction, and the direction which is vertical to the bottom plate in the plane of the bottom plate is a second direction,

the two adjacent rows of the flow distribution plates are partially overlapped in the first direction and are sequentially staggered in the second direction, so that the battery pole piece forms waves when sequentially passing around the flow distribution plates between the two rows of the flow distribution plates.

2. The battery pole piece fixture of claim 1, wherein:

the opposite inner sides of the pair of fixing columns are provided with pole piece mounting grooves, and the pole piece mounting grooves are used for fixing the battery pole pieces.

3. The battery pole piece fixing device of claim 2, wherein:

the fixed column is provided with 3 pole piece mounting grooves along the length direction of the fixed column, and the distance between every two adjacent pole piece mounting grooves is 2cm-5 cm.

4. The battery pole piece fixture of claim 1, wherein:

wherein, the flow distribution plate is arc flow distribution plate, and all in every row the concave surface of arc flow distribution plate all faces same direction, and the equidistance sets up on the bottom plate.

5. The battery pole piece fixing device of claim 4, wherein:

wherein, the curvature radius of arc flow distribution plate is 125mm, and the radian is 150 °.

6. The battery pole piece fixing device of claim 4, wherein:

the arc flow distribution plate and the edges of two vertical sides of the bottom plate are provided with round corner rectangular flow distribution holes, and four corners of the round corner rectangular flow distribution holes are round corners.

7. The battery pole piece fixing device of claim 4, wherein:

wherein, a plurality of sewage holes are arranged on the bottom plate,

still be equipped with many evenly distributed and the splitter plate fixed strip that is parallel to each other on the bottom plate, be listed in every in the splitter plate the intermediate position department of the bottom of splitter plate with corresponding splitter plate fixed strip fixed connection.

8. The battery pole piece fixture of claim 1, further comprising:

a frame column and a top frame,

wherein the bottom plate is a rectangular plate, the four frame columns are respectively arranged at the four corners of the rectangular plate,

the top frame is a rectangular frame, and four corners of the rectangular frame are fixedly connected with the frame columns respectively.

9. A method of using the battery pole piece fixture of any one of claims 1 to 8, comprising the steps of:

and installing the battery pole piece on the battery pole piece fixing device, and then placing the battery pole piece fixing device into a sewage pool to enable sewage to flow through the battery pole piece.

10. A method of using the battery pole piece fixture of claim 9, wherein:

and placing a plurality of battery pole piece fixing devices into the sewage pool, wherein the orientation of the splitter plate is consistent, so that the sewage flows through the plurality of battery pole piece fixing devices.

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