CN218422089U

CN218422089U - Lithium battery slurry stirring device

Info

Publication number: CN218422089U
Application number: CN202221664256.9U
Authority: CN
Inventors: 李伟; 贺狄龙
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-02-03
Anticipated expiration: 2032-06-30

Abstract

The utility model provides a lithium battery slurry stirring device, which comprises a stirring tank, a first driving piece and a second driving piece; a vertically arranged stirring shaft is arranged in the stirring tank, a first driving piece is used for driving the stirring shaft to rotate, an installation cavity is arranged in the stirring shaft, a piston is arranged in the installation cavity in a sliding mode, a second driving piece is used for driving the piston to move up and down in the installation cavity, a material receiving disc is fixed outside the stirring shaft, and the material receiving disc is connected with a guide pipe communicated with the bottom of the installation cavity; a plurality of stirring rods are arranged at the bottom end of the stirring shaft, and hollow cavities communicated with the mounting cavity are formed in the stirring rods in a penetrating manner; the stirring tank is provided with a circulating pipe, a discharge port of the circulating pipe is positioned above the material receiving plate, a feed port of the circulating pipe is communicated with the bottom of the stirring tank, and the circulating pipe is connected with a circulating delivery pump. The utility model discloses the continuous work of so of circulating transfer pump and (mixing) shaft just can prevent that the thick liquids from deposiing in the bottom of agitator tank, has improved the quality of thick liquids to coating quality has been guaranteed.

Description

Lithium battery slurry stirring device

Technical Field

The utility model relates to an agitated vessel technical field especially relates to a lithium cell thick liquids agitating unit.

Background

Lithium batteries are a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries become mainstream at present, and lithium iron phosphate is the preferred material of power lithium ion batteries, and has the advantages of good safety, reliable use, abundant resources and the like. In the production process of the lithium battery, the lithium iron phosphate, the conductive agent and the bonding adhesive are generally mixed by a slurry mixer to form mixed slurry, and the mixed slurry is coated to form the anode of the lithium battery. The performance of the lithium iron phosphate material is mainly exerted by the uniform combination with the conductive agent and the bonding glue.

However, in the process of mixing various materials in the slurry, the slurry is easy to precipitate, so that the concentration of the slurry at the bottom of the container is large, and the concentration of the slurry at other parts of the container is small, so that various materials in the slurry are not uniformly mixed, the produced slurry has different softness degrees, and the quality of the slurry is influenced.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem who exists among the background art, the utility model provides a lithium cell thick liquids agitating unit.

The utility model provides a lithium battery slurry stirring device, which comprises a stirring tank, a first driving piece and a second driving piece; a vertically arranged stirring shaft is arranged in the stirring tank, a first driving piece is used for driving the stirring shaft to rotate, an installation cavity is arranged in the stirring shaft, a piston is arranged in the installation cavity in a sliding mode, a second driving piece is used for driving the piston to move up and down in the installation cavity, a material receiving disc is fixed outside the stirring shaft, and the material receiving disc is connected with a guide pipe communicated with the bottom of the installation cavity; a plurality of stirring rods are arranged at the bottom end of the stirring shaft, and hollow cavities communicated with the mounting cavity are formed in the stirring rods in a penetrating manner; the stirring tank is provided with a circulating pipe, a discharge port of the circulating pipe is positioned above the material receiving plate, a feed port of the circulating pipe is communicated with the bottom of the stirring tank, and the circulating pipe is connected with a circulating delivery pump.

Preferably, the stirring rod is provided with a one-way valve for controlling the closing of the hollow cavity.

Preferably, a slurry solid content detection sensor is arranged at the bottom of the stirring tank.

Preferably, the bottom of the stirring tank is also connected with a discharge pipe, and the discharge pipe is connected with a discharge delivery pump and a discharge valve.

Preferably, the first driving member comprises a first motor and a transmission belt, and an output shaft of the first motor is in transmission connection with the stirring shaft through the transmission belt.

Preferably, the second driving part comprises a second motor, a gear and a rack, one end of the rack extends into the mounting cavity to be connected with the piston, the rack is meshed with the gear, and the second motor drives the gear to rotate.

Preferably, one end of the stirring rod, which is far away from the stirring shaft, is connected with a conical outlet pipe communicated with the hollow cavity.

The utility model provides a lithium battery slurry stirring device, first driving piece drive the thick liquids in the (mixing) shaft agitator tank, make the various material misce benes in the thick liquids. When the slurry begins to precipitate at the bottom of the stirring tank, starting a circulating delivery pump, sucking the slurry precipitated at the bottom of the stirring tank by the circulating delivery pump, conveying the slurry to a material receiving disc, entering the stirring shaft through a guide pipe and moving to the position below a piston; the second driving piece pushes the piston to move downwards, slurry in the stirring shaft is compressed into the stirring rod, and the stirring rod is hollow inside, so that the slurry in the stirring rod is sprayed into the stirring tank under the combined action of the pushing force of the piston and the centrifugal force generated by rotation of the stirring shaft, and is stirred by the stirring rod again. Because of the thick liquids with agitator tank bottom suck the (mixing) shaft again in, and spout on the puddler, thereby make the thick liquids of sediment reach the upper portion of agitator tank, make various materials in the thick liquids can the misce bene, the continuous work so of circulating transfer pump and (mixing) shaft, just can prevent that the thick liquids from deposiing in the bottom of agitator tank, the quality of thick liquids has been improved, thereby coating quality has been guaranteed, the circulating pump can work according to the size intermittent type nature of the thick liquids concentration of agitator tank bottom, can reach energy-conserving purpose.

Drawings

Fig. 1 is the utility model provides a lithium battery slurry stirring device's schematic structure diagram.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person having ordinary skill in the art without creative efforts shall belong to the protection scope of the present invention.

Referring to fig. 1, the utility model provides a lithium battery slurry stirring device, which comprises a stirring tank 1, a first driving piece and a second driving piece; wherein:

be provided with vertical (mixing) shaft 2 of arranging in the agitator tank 1, be provided with installation cavity 3 in the (mixing) shaft 2, slidable mounting has piston 4 in the installation cavity 3, and (mixing) shaft 2 external fixation has take-up (stock) pan 5, and take-up (stock) pan 5 is connected with the pipe 6 with 3 bottom intercommunications in installation cavity. A plurality of puddlers 7 are installed to (mixing) shaft 2 bottom, and puddler 7 runs through and sets up the well cavity with installation cavity 3 intercommunication. The stirring tank 1 is provided with a circulating pipe 8, a discharge hole of the circulating pipe 8 is positioned above the material receiving disc 5, a feed inlet of the circulating pipe 8 is communicated with the bottom of the stirring tank 1, and the circulating pipe 8 is connected with a circulating delivery pump 9. And a slurry solid content detection sensor 11 is arranged at the bottom of the stirring tank 1.

The first driving part is used for driving the stirring shaft 2 to rotate, the first driving part comprises a first motor 14 and a transmission belt 15, and an output shaft of the first motor 14 is in transmission connection with the stirring shaft 2 through the transmission belt 15.

The second driving part is used for driving the piston 4 to move up and down in the installation cavity 3, the second driving part comprises a second motor, a gear and a rack 16, one end of the rack 16 extends into the installation cavity 3 to be connected with the piston 4, the rack 16 is meshed with the gear, and the second motor drives the gear to rotate. The second motor drives the gear to rotate, and the gear drives the rack 16 to move up and down, so that the piston 4 is driven to move up and down in the installation cavity 3.

In this embodiment, the bottom of the stirring tank 1 is further connected with a discharge pipe 12, and the discharge pipe 12 is connected with a discharge delivery pump 13 and a discharge valve.

Further, a one-way valve 10 for controlling the closing of the hollow cavity is arranged on the stirring rod 7. The stirring rod 7 is far away from (mixing) shaft 2 one end and is connected with the toper outlet pipe 17 with well cavity intercommunication, and the tip of toper outlet pipe 17 is connected with the stirring rod, and toper outlet pipe 17 can increase the diffusion scope of thick liquids for the speed of thick liquids diffusion.

The utility model discloses the theory of operation does: the first driving piece drives the stirring shaft 2 to stir the slurry in the stirring tank 1, so that various materials in the slurry are uniformly mixed. When the slurry begins to precipitate at the bottom of the stirring tank 1, starting the circulating delivery pump 9, sucking the slurry precipitated at the bottom of the stirring tank 1 by the circulating delivery pump 9, conveying the slurry to the material receiving disc 5, entering the stirring shaft 2 through the guide pipe 6 and moving to the position below the piston 4; the second driving piece pushes the piston 4 to move downwards, slurry in the stirring shaft 2 is compressed into the stirring rod 7, and due to the fact that the stirring rod 7 is hollow inside, the slurry in the stirring rod 7 is sprayed into the stirring tank 1 under the combined action of the pushing force of the piston 4 and the centrifugal force generated by rotation of the stirring shaft 2, and is stirred again by the stirring rod 7. The slurry at the bottom of the stirring tank 1 is sucked into the stirring shaft 2 again and is sprayed out from the stirring rod 7, so that the precipitated slurry reaches the upper part of the stirring tank 1, various materials in the slurry can be uniformly mixed, the circulating pump can work intermittently according to the concentration of the slurry at the bottom of the stirring tank 1, and the aim of saving energy can be fulfilled.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A lithium battery slurry stirring device is characterized by comprising a stirring tank (1), a first driving piece and a second driving piece; a vertically arranged stirring shaft (2) is arranged in the stirring tank (1), a first driving piece is used for driving the stirring shaft (2) to rotate, an installation cavity (3) is arranged in the stirring shaft (2), a piston (4) is arranged in the installation cavity (3) in a sliding mode, a second driving piece is used for driving the piston (4) to move up and down in the installation cavity (3), a material receiving disc (5) is fixed outside the stirring shaft (2), and the material receiving disc (5) is connected with a guide pipe (6) communicated with the bottom of the installation cavity (3); a plurality of stirring rods (7) are arranged at the bottom end of the stirring shaft (2), and hollow cavities communicated with the mounting cavity (3) are formed in the stirring rods (7) in a penetrating manner; the stirring tank (1) is provided with a circulating pipe (8), a discharge hole of the circulating pipe (8) is positioned above the material receiving disc (5), a feed inlet of the circulating pipe (8) is communicated with the bottom of the stirring tank (1), and the circulating pipe (8) is connected with a circulating delivery pump (9).

2. The lithium battery slurry stirring device as claimed in claim 1, wherein a check valve (10) for controlling the closing of the hollow cavity is installed on the stirring rod (7).

3. The lithium battery slurry stirring device as claimed in claim 1, wherein a slurry solid content detection sensor (11) is installed at the bottom of the stirring tank (1).

4. The lithium battery slurry stirring device according to any one of claims 1-3, wherein a discharge pipe (12) is further connected to the bottom of the stirring tank (1), and a discharge conveying pump (13) and a discharge valve are connected to the discharge pipe (12).

5. The lithium battery slurry stirring device according to any one of claims 1-3, wherein the first driving member comprises a first motor (14) and a transmission belt (15), and an output shaft of the first motor (14) is in transmission connection with the stirring shaft (2) through the transmission belt (15).

6. The lithium battery slurry stirring device as claimed in any one of claims 1 to 3, wherein the second driving member comprises a second motor, a gear and a rack (16), one end of the rack (16) extends into the mounting cavity (3) to be connected with the piston (4), the rack (16) is meshed with the gear, and the second motor drives the gear to rotate.

7. The lithium battery slurry stirring device as recited in any one of claims 1 to 3, wherein a tapered outlet pipe communicating with the hollow cavity is connected to an end of the stirring rod away from the stirring shaft.