CN211411879U

CN211411879U - Negative pole homogenate device is used in lithium ion battery production

Info

Publication number: CN211411879U
Application number: CN201922181282.0U
Authority: CN
Inventors: 吉磊; 吴芳
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-09-04
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses a negative pole homogenate device is used in lithium ion battery production, including homogenate jar and glue solution jar, the upper surface of homogenate jar is provided with first filling tube, second filling tube and first motor, the right side of homogenate jar is provided with the conveying pump, and the conveying pump is connected with the connecting pipe, and the one end that the conveying pump was kept away from to the connecting pipe simultaneously contacts with the material transporting device, the second motor is connected with the second pivot. This negative pole homogenate device is used in lithium ion battery production, dry mix graphite powder and conductive agent in the homogenate jar, can open first drain pipe, make CMC glue solution and powder mix and get first mixture, open the second drain pipe again, make CMC glue solution and first mixture mix and obtain the second mixture, add SBR and mix through the second filling tube and get the third mixture with the second mixture, then open the third drain pipe, make CMC glue solution and third mixture mix and obtain mixed thick liquids, make the abundant good homogeneous mixing of each component, improve the quality of mixed thick liquids.

Description

Negative pole homogenate device is used in lithium ion battery production

Technical Field

The utility model relates to a lithium ion battery produces relevant technical field, specifically is a negative pole homogenate device is used in lithium ion battery production.

Background

The lithium ion battery is also called as a rechargeable battery and mainly works by the movement of lithium ions between a positive electrode and a negative electrode, the manufacturing process of the lithium ion battery generally comprises four steps of pulping, coating, assembling, forming and the like, the quality of homogenate and stirring plays a decisive role in the performance of subsequent coating and the final finished battery, the lithium battery negative electrode homogenate is formed by mixing graphite, a conductive agent, CMC, SBR, solvent water and other raw materials, but the current negative electrode homogenate and stirring effect is poor, the dispersion uniformity of the conductive agent needs to be improved, and the negative electrode homogenate device for the production of the lithium ion battery is needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a negative pole homogenate device is used in lithium ion battery production to solve the lithium cell negative pole homogenate that proposes in the above-mentioned background art and mix graphite, conductive agent, CMC, SBR and solvent water and constitute, but present negative pole homogenate stirring effect is poor, and conductive agent dispersion homogeneity remains the problem that improves.

In order to achieve the above object, the utility model provides a following technical scheme: a negative pole homogenate device for lithium ion battery production comprises a homogenate tank and a glue solution tank, wherein the upper surface of the homogenate tank is provided with a first feed pipe, a second feed pipe and a first motor, the first feed pipe is arranged at the front side of the second feed pipe, the first feed pipe and the second feed pipe are arranged at the left side of the first motor, the first motor is connected with a first rotating shaft, the lower end of the first rotating shaft penetrates through the upper surface of the homogenate tank and is connected with a first stirrer, the first stirrer is rotatably connected to the top end in the homogenate tank, the right side of the homogenate tank is provided with a feed delivery pump, the feed delivery pump is connected with a connecting pipe, one end of the connecting pipe far away from the feed delivery pump is contacted with a material conveying device, the glue is arranged at the upper surface of the homogenate tank, the glue solution tank is arranged at the right side of the first motor, the glue solution tank is connected with a pump pipe, and the pump line sets up the lower extreme at the system jar of gluing, the system is glued the jar and is set up the right side at the homogenate jar, and the upper surface of system jar is provided with third filling tube and second motor, and the third filling tube setting is in the outside of second motor simultaneously, the second motor is connected with the second pivot, and the second pivot runs through the upper surface of system jar and is connected with the second agitator, and the second agitator rotates simultaneously and is connected on the interior top of system jar.

Preferably, the first feeding pipe comprises a filter cylinder and a conical filter plate, the filter cylinder is arranged in the first feeding pipe, and the conical filter plate is arranged at the inner bottom of the filter cylinder.

Preferably, the first motor, the first rotating shaft and the first stirrer form a rotating mechanism.

Preferably, the material transporting device comprises universal wheels and a storage tank, the universal wheels are arranged at the lower end of the material transporting device, and the upper surface of the material transporting device is in contact with the storage tank.

Preferably, the glue solution jar is including first stock solution chamber, second stock solution chamber, third stock solution chamber, first drain pipe, the second drain pipe, the third drain pipe, first feed liquor pipe, second feed liquor pipe and third inlet tube, and be provided with first stock solution chamber in the glue solution jar respectively, second stock solution chamber and third stock solution chamber, second stock solution chamber sets up the top in third stock solution chamber, and second stock solution chamber sets up in first stock solution chamber below, simultaneously first stock solution chamber respectively with first drain pipe and first feed liquor union coupling, second stock solution chamber respectively with second drain pipe and second feed liquor pipe, third stock solution chamber is connected with third drain pipe and third inlet tube respectively, and the third inlet tube, second feed liquor pipe and first feed liquor pipe all are connected with the pump line, first drain pipe, second drain pipe and third drain pipe keep away from glue fluid tank one end and all link up with the homogenate jar mutually.

Preferably, the second motor, the second rotating shaft and the second stirrer form a rotating mechanism.

Compared with the prior art, the beneficial effects of the utility model are that: the cathode homogenizing device for the production of the lithium ion battery,

(1) adding solvent water and CMC into a glue making tank through a third feeding pipe, making CMC glue solution under the action of a second motor driving a second stirrer, and storing the CMC glue solution in the glue tank through a first liquid inlet pipe, a second liquid inlet pipe and a third liquid inlet pipe by using a pump pipe so as to facilitate subsequent mixing and use;

(2) dry-mixing graphite powder and a conductive agent in a homogenizing tank, mixing under the action of a first motor driving a first stirrer to prepare powder, opening a first liquid outlet pipe to mix CMC (carboxy methyl cellulose) glue solution with the powder to obtain a first mixture, opening a second liquid outlet pipe to mix the CMC glue solution with the first mixture to obtain a second mixture, adding SBR through a second feeding pipe to mix with the second mixture to obtain a third mixture, opening the third liquid outlet pipe to mix the CMC glue solution with the third mixture to obtain mixed slurry, and carrying out grading mixing for multiple times to fully and well uniformly mix all the components, thereby improving the quality of the mixed slurry;

(3) the storage tank is placed on the material transporting device, the storage tank is moved to the position near the homogenate tank through the universal wheel, the sealing cover on the storage tank is opened, the connecting pipe is stretched into the storage tank, the prepared mixed slurry is conveyed into the storage tank through the material conveying pump, and the mixed slurry is moved to a designated area for standby through the material transporting device.

Drawings

Fig. 1 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 2 is a schematic view of a left side view cross section structure of the connection between the glue tank and the slurry tank of the present invention;

fig. 3 is a schematic view of the front sectional structure of the first feeding tube of the present invention.

In the figure: 1. the slurry homogenizing tank comprises a slurry homogenizing tank body, 2, a first feeding pipe, 201, a filter cylinder, 202, a conical filter plate, 3, a second feeding pipe, 4, a first motor, 5, a first rotating shaft, 6, a first stirrer, 7, a material conveying pump, 8, a connecting pipe, 9, a material conveying device, 901, a universal wheel, 902, a storage tank, 10, a glue solution tank, 1001, a first liquid storage cavity, 1002, a second liquid storage cavity, 1003, a third liquid storage cavity, 1004, a first liquid outlet pipe, 1005, a second liquid outlet pipe, 1006, a third liquid outlet pipe, 1007, a first liquid inlet pipe, 1008, a second liquid inlet pipe, 1009, a third liquid inlet pipe, 11, a pump pipe, 12, a glue making tank, 13, a third feeding pipe, 14, a second motor, 15, a second rotating shaft, 16 and a second stirrer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a negative pole homogenate device is used in lithium ion battery production, as shown in fig. 1, fig. 2 and fig. 3, the upper surface of homogenate jar 1 is provided with first filling tube 2, second filling tube 3 and first motor 4, and first filling tube 2 sets up the front side at second filling tube 3, first filling tube 2 and second filling tube 3 all set up the left side at first motor 4 simultaneously, first filling tube 2 is including straining a section of thick bamboo 201 and toper filter plate 202, and strain a section of thick bamboo 201 and set up in first filling tube 2, the interior bottom of straining a section of thick bamboo 201 simultaneously is provided with toper filter plate 202, strain a section of thick bamboo 201 cooperation toper filter plate 202 and can filter the powder raw materials of adding such as graphite, avoid unqualified powder raw materials to get into, influence homogenate quality.

As shown in fig. 1 and fig. 2, a first motor 4 is connected to a first rotating shaft 5, the lower end of the first rotating shaft 5 penetrates through the upper surface of the homogenate tank 1 and is connected to a first stirrer 6, the first stirrer 6 is rotatably connected to the top end of the homogenate tank 1, the first motor 4, the first rotating shaft 5 and the first stirrer 6 form a rotating mechanism, the first motor 4 drives the first stirrer 6 to stir the mixed material through the first rotating shaft 5, a material delivery pump 7 is arranged on the right side of the homogenate tank 1, the material delivery pump 7 is connected to a connecting pipe 8, one end of the connecting pipe 8 far from the material delivery pump 7 is in contact with a material conveying device 9, the material conveying device 9 comprises a universal wheel 901 and a storage tank 902, the universal wheel 901 is arranged at the lower end of the material conveying device 9, the upper surface of the material conveying device 9 is in contact with the storage tank 902, the storage tank 902 can collect and convey the mixed slurry to a designated area for standby, glue solution jar 10 sets up the upper surface at homogenate jar 1, and glue solution jar 10 sets up the right side at first motor 4, glue solution jar 10 is including first stock solution chamber 1001, second stock solution chamber 1002, third stock solution chamber 1003, first drain pipe 1004, second drain pipe 1005, third drain pipe 1006, first feed liquor pipe 1007, second feed liquor pipe 1008 and third inlet pipe 1009, and be provided with first stock solution chamber 1001 in the glue solution jar 10 respectively, second stock solution chamber 1002 and third stock solution chamber 1003, second stock solution chamber 1002 sets up the top at third stock solution chamber, and second stock solution chamber 1002 sets up in first stock solution chamber 1001 below, and first stock solution chamber 1001 is connected with first drain pipe 1004 and first feed liquor pipe 1007 respectively simultaneously, second stock solution chamber 1002 respectively with second drain pipe 1005 and second feed liquor pipe 1008, third stock solution chamber 1003 respectively with third stock solution pipe 1006 and third inlet pipe 1009, and third inlet pipe 1009 are connected, The second liquid inlet pipe 1008 and the first liquid inlet pipe 1007 are connected with the pump pipe 11, one ends, far away from the glue solution tank 10, of the first liquid outlet pipe 1004, the second liquid outlet pipe 1005 and the third liquid outlet pipe 1006 are communicated with the homogenizing tank 1, the glue solution is divided into three parts, and the three parts are sequentially mixed and stirred with the mixed material, so that the mixing uniformity of the mixed material is improved.

As shown in fig. 1, the glue solution tank 10 is connected to the pump pipe 11, the pump pipe 11 is disposed at the lower end of the glue making tank 12, the glue making tank 12 is disposed at the right side of the homogenizing tank 1, the upper surface of the glue making tank 12 is provided with a third feeding pipe 13 and a second motor 14, the third feeding pipe 13 is disposed at the outer side of the second motor 14, a second rotating shaft 15 and a second stirrer 16 form a rotating mechanism, the second motor 14 drives the second stirrer 16 through the second rotating shaft 15 to uniformly mix the solvent water and the CMC, the second motor 14 is connected to the second rotating shaft 15, the second rotating shaft 15 penetrates through the upper surface of the glue making tank 12 to be connected to the second stirrer 16, and the second stirrer 16 is rotatably connected to the inner top end of the glue making tank 12.

The working principle is as follows: when the negative pole homogenizing device for lithium ion battery production is used, a power supply is switched on, solvent water and CMC are added into a glue making tank 12 through a third feeding pipe 13, a second motor 14 is started, the second motor 14 drives a second rotating shaft 15 to rotate, the second rotating shaft 15 drives a second stirrer 16 to mix and stir the solvent water and the CMC to prepare CMC glue solution, the CMC glue solution is pumped into a glue solution tank 10 through a pump pipe 11, a valve on a first liquid inlet pipe 1007, a valve on a second liquid inlet pipe 1008 and a valve on a third liquid inlet pipe 1009 can be sequentially opened, the CMC glue solution is sequentially stored into a first liquid storage cavity 1001, a second liquid storage cavity 1002 and a third liquid storage cavity 1003, graphite and a conductive agent are added into a homogenizing tank 1 through a first feeding pipe 2, a filter cylinder 201 and a conical filter plate 202 can filter powder raw materials, unqualified powder particles are prevented from entering to influence the quality of mixed pulp, the first motor 4 is started, the first motor 4 drives the first rotating shaft 5 to rotate, the first rotating shaft 5 drives the first stirrer 6 to rotate, powder raw materials are mixed, after mixing, a valve on the first liquid outlet pipe 1004 is opened, the CMC glue solution in the first liquid storage cavity 1001 enters the homogenizing tank 1, the first mixture is mixed under the action of the first stirrer 6 to obtain a first mixture, the second liquid outlet pipe 1005 is opened, the CMC glue solution in the second liquid storage cavity 1002 enters the homogenizing tank 1 to be mixed with the first mixture to obtain a second mixture, the SBR and the second mixture are added through the second feeding pipe 3 to be mixed to obtain a third mixture, then the third liquid outlet pipe 1006 is opened, the CMC glue solution in the third liquid storage cavity 1003 and the third mixture are mixed to obtain a mixed slurry, the storage tank 902 can be placed on the homogenizing and conveying device 9, the storage tank moves to the vicinity of the homogenizing tank 1 under the action of the universal wheel 901, a sealing cover on the storage tank 902 is opened, the connecting pipe 8 is extended into the storage tank 902, the mixed slurry is input into the storage tank 902 through the delivery pump 7, the mixed slurry is transported to a designated position and is unloaded for standby, the material transporting device 9 can be recycled, and the filter cartridge 201 can be taken out for cleaning, and the content which is not described in detail in the specification belongs to the prior art which is well known by a person skilled in the art.

The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the invention.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a negative pole homogenate device is used in lithium ion battery production, includes homogenate jar (1) and glue solution jar (10), its characterized in that: the upper surface of the homogenate tank (1) is provided with a first feed pipe (2), a second feed pipe (3) and a first motor (4), the first feed pipe (2) is arranged at the front side of the second feed pipe (3), the first feed pipe (2) and the second feed pipe (3) are arranged at the left side of the first motor (4), the first motor (4) is connected with a first rotating shaft (5), the lower end of the first rotating shaft (5) penetrates through the upper surface of the homogenate tank (1) and is connected with a first stirrer (6), the first stirrer (6) is rotatably connected to the inner top end of the homogenate tank (1), the right side of the homogenate tank (1) is provided with a material conveying pump (7), the pump (7) is connected with a connecting pipe (8), one end of the connecting pipe (8) far away from the material conveying pump (7) is contacted with a material conveying device (9), and the glue (10) is arranged on the upper surface of the homogenate tank (1), and glue solution jar (10) sets up the right side at first motor (4), glue solution jar (10) is connected with pump line (11), and pump line (11) set up the lower extreme in system gluey jar (12), system gluey jar (12) set up the right side in homogenate jar (1), and the upper surface of system gluey jar (12) is provided with third filling tube (13) and second motor (14), and third filling tube (13) set up the outside at second motor (14) simultaneously, second motor (14) are connected with second pivot (15), and second pivot (15) run through the upper surface of system gluey jar (12) and are connected with second agitator (16), and second agitator (16) rotate simultaneously and are connected on the interior top of system gluey jar (12).

2. The negative electrode homogenizing device for lithium ion battery production according to claim 1, characterized in that: the first feeding pipe (2) comprises a filter cylinder (201) and a conical filter plate (202), the filter cylinder (201) is arranged in the first feeding pipe (2), and the conical filter plate (202) is arranged at the inner bottom of the filter cylinder (201).

3. The negative electrode homogenizing device for lithium ion battery production according to claim 1, characterized in that: the first motor (4), the first rotating shaft (5) and the first stirrer (6) form a rotating mechanism.

4. The negative electrode homogenizing device for lithium ion battery production according to claim 1, characterized in that: the material transporting device (9) comprises universal wheels (901) and a storage tank (902), the universal wheels (901) are arranged at the lower end of the material transporting device (9), and the upper surface of the material transporting device (9) is in contact with the storage tank (902).

5. The negative electrode homogenizing device for lithium ion battery production according to claim 1, characterized in that: the glue solution tank (10) comprises a first liquid storage cavity (1001), a second liquid storage cavity (1002), a third liquid storage cavity (1003), a first liquid outlet pipe (1004), a second liquid outlet pipe (1005), a third liquid outlet pipe (1006), a first liquid inlet pipe (1007), a second liquid inlet pipe (1008) and a third liquid inlet pipe (1009), the glue solution tank (10) is internally provided with the first liquid storage cavity (1001), the second liquid storage cavity (1002) and the third liquid storage cavity (1003), the second liquid storage cavity (1002) is arranged above the third liquid storage cavity (1003), the second liquid storage cavity (1002) is arranged below the first liquid storage cavity (1001), meanwhile, the first liquid storage cavity (1001) is respectively connected with the first liquid outlet pipe (1004) and the first liquid inlet pipe (1007), the second liquid storage cavity (1002) is respectively connected with the second liquid outlet pipe (1005) and the second liquid inlet pipe (1008), the third liquid storage cavity (1003) is respectively connected with the third liquid outlet pipe (1006) and the third liquid inlet pipe (1006), and the third liquid inlet pipe (1009), the second liquid inlet pipe (1008) and the first liquid inlet pipe (1007) are all connected with the pump pipe (11), and one ends of the first liquid outlet pipe (1004), the second liquid outlet pipe (1005) and the third liquid outlet pipe (1006) far away from the glue solution tank (10) are all communicated with the homogenate tank (1).

6. The negative electrode homogenizing device for lithium ion battery production according to claim 1, characterized in that: the second motor (14), the second rotating shaft (15) and the second stirrer (16) form a rotating mechanism.