CN215184068U

CN215184068U - High-efficient mixing film-making device of lithium cell graphite negative pole

Info

Publication number: CN215184068U
Application number: CN202121331819.8U
Authority: CN
Inventors: 穆义林
Original assignee: Anhui Xinpinyuan Battery Technology Co ltd
Current assignee: Anhui Xinpinyuan Battery Technology Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-12-14
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses a high-efficient mixing film-making device of lithium cell graphite negative pole relates to lithium cell production technical field. The method comprises the following steps: device shell, mixing mechanism, pan feeding mouth, discharge gate, cowl, mixing pivot, first preforming roller, second preforming roller, third preforming roller, conveyer belt. Has the advantages that: raw materials such as graphite powder, a binder and the like are stirred and mixed into a mass through a plurality of stirring columns arranged in a mixing mechanism, and meanwhile, the mass-shaped materials are continuously hammered and folded for mixing through the action of a hammering head, so that the finally produced battery pole piece is a uniform mixture; because the interval between the multistage preforming roller constantly reduces for the lithium-ion battery pole piece of bulk material required thickness is progressively pressed into under the effect of multistage preforming roller, and because multistage calendering makes the pole piece of extrusion even difficult emergence laminating not tight and produce and break, make the even yields of pole piece thickness of producing high, reduce the loss of material in process of production.

Description

High-efficient mixing film-making device of lithium cell graphite negative pole

Technical Field

The utility model relates to a lithium cell production technical field particularly, relates to a high-efficient mixing film-making device of lithium cell graphite negative pole.

Background

With the wider use of green energy, lithium ion rechargeable batteries with high specific capacity are more and more commonly found in daily life, and among various lithium batteries, a graphite negative electrode material is one of the most commonly used negative electrode materials of the lithium batteries.

In the process of producing the graphite negative pole piece, raw materials such as graphite powder raw materials and adhesives need to be mixed, but the existing graphite mixing device is slow in mixing speed, and the graphite is mixed into a bulk due to the characteristics of the binder, so that the whole graphite is not easy to mix uniformly.

And because the binder is volatile, the uniformly mixed and agglomerated graphite negative electrode group must be immediately fed into a roller press for roll forming, if delay occurs, the binder is easy to lose efficacy, the finally prepared graphite pole piece is easy to wrinkle and break, and the yield of the pole piece is low.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the problem in the correlation technique, the utility model provides a high-efficient mixing film-making device of lithium cell graphite negative pole to overcome the above-mentioned technical problem that current correlation technique exists.

The technical scheme of the utility model is realized like this:

the utility model provides a high-efficient mixing film-making device of lithium cell graphite negative pole, includes: device shell, mixing mechanism, the device shell top is provided with the support frame, the pole piece export has been seted up to device shell bottom one end, device shell central authorities are provided with the baffle, the inside mixing mechanism that is provided with of support frame, mixing mechanism top is provided with the pan feeding mouth, mixing mechanism bottom one end is provided with the discharge gate, the inside cowl that is provided with of discharge gate, mixing mechanism central authorities are provided with the mixing pivot, be provided with a plurality of stirring posts in the mixing pivot, stirring post top is provided with the hammering head, the discharge gate bottom is provided with first preforming roller, first preforming roller below is provided with the second preforming roller, second preforming roller below is provided with the third preforming roller, third preforming roller below is provided with the conveyer belt, the inside conveying pivot that is provided with of conveyer belt.

Further, the arc-shaped baffle slides in the discharge hole, and the arc-shaped baffle can seal or open the discharge hole.

Furthermore, the stirring columns are spirally arranged at intervals, and the surfaces of the hammer pressing heads are tangent to the inner surface of the blending mechanism.

Further, the distance between the first tabletting rollers is 8mm, the distance between the second tabletting rollers is 3mm, and the distance between the third tabletting rollers is 1 mm.

Further, the conveying rotating shaft rotates to drive the conveying belt to rotate.

The utility model has the advantages that whether each part of the detection device operates normally before use is detected, graphite powder is firstly fed into the mixing mechanism through the feeding port, the graphite powder is firstly mixed preliminarily under the stirring action of a plurality of stirring columns which are arranged spirally in the mixing mechanism, then binder and the like are added into the mixing mechanism through the feeding port, the materials in the mixing mechanism are stirred into a mass through the stirring columns, then the mass materials are uniformly hammered and mixed continuously under the action of the hammering head, the whole mass materials are uniformly mixed continuously in the hammering process until the materials in the mixing mechanism are completely agglomerated, then the arc baffle is removed to open the discharge port, the mass materials are fed into the upper part of the first tabletting roller through the discharge port, the mass materials are fed into the second tabletting roller for tabletting after being rolled into a sheet in the first tabletting roller to reduce the thickness of the pole piece again, and the pole pieces are compressed into pole pieces with the final required thickness by a third tabletting roller, so that the bulk materials are gradually pressed into the required lithium battery pole pieces under the action of the multistage tabletting rollers and then fall onto a conveying belt, and the pole pieces are conveyed out of the device by the conveying belt to be processed in the next step. According to the efficient mixing and flaking device for the graphite negative electrode of the lithium battery, the mixing mechanism is arranged, the stirring columns are arranged in the mixing mechanism to stir raw materials such as graphite powder and a binder to be mixed uniformly into a cluster, and meanwhile, the cluster material is continuously hammered and folded under the action of the hammering head, so that the whole cluster material is continuously mixed in the hammering process, and finally produced battery pole pieces are uniform; this kind of high-efficient mixing film-making device of lithium cell graphite negative pole, through setting up multistage preforming roller, interval between the multistage preforming roller constantly reduces for the bulk material is gradually pressed into the lithium-ion battery pole piece of required thickness under the effect of multistage preforming roller, and because multistage calendering makes the pole piece of extrusion difficult emergence not tight and produce the fracture of laminating when even, makes the even yields of pole piece thickness of producing high, reduces the loss of material in process of production.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is a schematic diagram of an overall explosion according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view according to an embodiment of the present invention.

In the figure:

1. a device housing; 11. a support frame; 12. a pole piece outlet; 13. a baffle plate; 2. a feeding port; 3. a blending mechanism; 31. an arc-shaped baffle plate; 32. a discharge port; 4. a blending rotation shaft; 41. a stirring column; 42. a hammer head; 5. a first sheeting roller; 6. a second sheeting roller; 7. a third sheeting roller; 8. a conveyor belt; 81. and a transmission rotating shaft.

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 all belong to the protection scope of the present invention.

According to the utility model discloses an embodiment provides a high-efficient mixing film-making device of lithium cell graphite negative pole.

As shown in fig. 1-3, according to the utility model discloses a high-efficient mixing film-making device of lithium cell graphite negative pole, include: the device comprises a device shell 1 and a blending mechanism 3, wherein a support frame 11 is arranged at the top end of the device shell 1, a pole piece outlet 12 is arranged at one end of the bottom end of the device shell 1, a baffle 13 is arranged at the center of the device shell 1, the blending mechanism 3 is arranged in the support frame 11, a feeding port 2 is arranged at the top end of the blending mechanism 3, a discharging port 32 is arranged at one end of the bottom end of the blending mechanism 3, an arc baffle 31 is arranged in the discharging port 32, a blending rotating shaft 4 is arranged at the center of the blending mechanism 3, a plurality of stirring columns 41 are arranged on the blending rotating shaft 4, a hammering head 42 is arranged at the top ends of the stirring columns 41, a first sheeting roller 5 is arranged at the bottom end of the discharging port 32, a second sheeting roller 6 is arranged below the first sheeting roller 5, a third sheeting roller 7 is arranged below the second sheeting roller 6, and a conveying belt 8 is arranged below the third sheeting roller 7, the conveying belt 8 is internally provided with a conveying rotating shaft 81.

In one embodiment, for the arc-shaped baffle 31 sliding inside the discharge hole 32, the arc-shaped baffle 31 can close or open the discharge hole 32, so that the sliding of the arc-shaped baffle 31 can limit the discharge of the dough-like materials in the blending mechanism 3 from the blending mechanism 3.

In one embodiment, for the above-mentioned interval spiral arrangement between the mixing columns 41, the surface of the hammer head 42 is tangent to the inner surface of the kneading mechanism 3, so that the mixing columns 41 can better mix the nodular material under the action of the hammer head 42, and the material attached to the inner wall of the kneading mechanism 3 is completely scraped off by the hammer head 42.

In one embodiment, the distance between the first sheeting rollers 5 is 8mm, the distance between the second sheeting rollers 6 is 3mm, and the distance between the third sheeting rollers 7 is 1mm, so that the dough-shaped material is gradually pressed into the required lithium battery pole pieces under the action of the multiple stages of sheeting rollers.

In one embodiment, the transmission shaft 81 rotates to drive the transmission belt 8 to rotate, so as to transmit the pressed pole piece out of the device.

In conclusion, with the aid of the above technical solution of the present invention, before use, firstly whether each component of the detecting device operates normally or not is detected, firstly, the graphite powder is fed into the blending mechanism 3 through the feeding port 2, firstly, the graphite powder is primarily blended under the stirring action of the plurality of stirring columns 41 arranged spirally inside the blending mechanism 3, then, the binder and the like are added into the blending mechanism 3 through the feeding port 2, the materials in the blending mechanism are stirred into a mass through the stirring columns 41, then, the mass materials are continuously hammered and blended under the action of the hammering head 42, so that the whole mass materials are continuously blended in the hammering process until the materials in the blending mechanism 3 are completely agglomerated, then, the arc baffle 31 is removed to open the discharging port 32, the mass materials are fed into the upper part of the first pole piece pressing roller 5 through the discharging port 32, the mass materials are fed into the second pole piece pressing roller 6 after being rolled in the first pole piece pressing roller 5 to be pressed again to reduce the thickness of the pole piece, and the pole pieces are compressed into pole pieces with the final required thickness by a third tabletting roller 7, so that the bulk materials are gradually compressed into the required lithium battery pole pieces under the action of the multistage tabletting rollers and then fall onto a conveying belt 8, and the pole pieces are conveyed out of the device by the conveying belt 8 to be processed in the next step.

Has the advantages that: 1. this kind of high-efficient mixing film-making device of lithium cell graphite negative pole, through setting up mixing mechanism 3, mixing mechanism 3 is inside to set up a plurality of stirring posts 41 and carries out the mixing with raw material stirring such as graphite powder and binder and conglobate, and the effect through hammer head 42 simultaneously carries out constantly hammering to the conglobate material and folds for whole conglobate material constantly carries out the mixing at the hammering in-process, makes the battery pole piece of final output be even mixture.

2. This kind of high-efficient mixing film-making device of lithium cell graphite negative pole, through setting up multistage preforming roller, interval between the multistage preforming roller constantly reduces for the bulk material is gradually pressed into the lithium-ion battery pole piece of required thickness under the effect of multistage preforming roller, and because multistage calendering makes the pole piece of extrusion difficult emergence not tight and produce the fracture of laminating when even, makes the even yields of pole piece thickness of producing high, reduces the loss of material in process of production.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high-efficient mixing film-making device of lithium cell graphite negative pole, includes: the device comprises a device shell (1) and a blending mechanism (3), and is characterized in that a support frame (11) is arranged at the top end of the device shell (1), a pole piece outlet (12) is formed in one end of the bottom end of the device shell (1), a baffle (13) is arranged in the center of the device shell (1), the blending mechanism (3) is arranged in the support frame (11), a feeding port (2) is formed in the top end of the blending mechanism (3), a discharging port (32) is formed in one end of the bottom end of the blending mechanism (3), an arc baffle (31) is arranged in the discharging port (32), a blending rotating shaft (4) is arranged in the center of the blending mechanism (3), a plurality of stirring columns (41) are arranged on the blending rotating shaft (4), a hammering head (42) is arranged at the top ends of the stirring columns (41), a first pressing roller (5) is arranged at the bottom end of the discharging port (32), first preforming roller (5) below is provided with second preforming roller (6), second preforming roller (6) below is provided with third preforming roller (7), third preforming roller (7) below is provided with conveyer belt (8), conveyer belt (8) inside is provided with conveying pivot (81).

2. The efficient mixing and sheet-making device for the graphite negative electrode of the lithium battery as claimed in claim 1, wherein the arc-shaped baffle (31) slides inside the discharge hole (32), and the arc-shaped baffle (31) can close or open the discharge hole (32).

3. The efficient blending sheet-making device for the graphite negative electrode of the lithium battery as claimed in claim 1, wherein the stirring columns (41) are spirally arranged at intervals, and the surface of the hammering head (42) is tangent to the inner surface of the blending mechanism (3).

4. The efficient blending and tabletting device for the graphite negative electrode of the lithium battery as claimed in claim 1, wherein the distance between the first tabletting rollers (5) is 8mm, the distance between the second tabletting rollers (6) is 3mm, and the distance between the third tabletting rollers (7) is 1 mm.

5. The efficient blending sheet-making device for the graphite negative electrode of the lithium battery as claimed in claim 1, wherein the conveying rotating shaft (81) rotates to drive the conveying belt (8) to rotate.