CN217361645U

CN217361645U - Electrode dry preparation device

Info

Publication number: CN217361645U
Application number: CN202221018646.9U
Authority: CN
Inventors: 马永泉
Original assignee: Shandong Hetai New Energy Co ltd
Current assignee: Shandong Hetai New Energy Co ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-09-02
Anticipated expiration: 2032-04-20

Abstract

The utility model provides an electrode dry process preparation facilities, including setting gradually: a pair of blenders for mixing powder; the inlet of the material guide channel is communicated with the outlet of the corresponding mixer; a pair of pre-pressing rollers for pressing the powder into a material film; the pair of pressing rollers is used for pressing and molding the current collector and the material films on the two sides; the cutter is used for cutting the laminated material belt; and a gap between the pair of material mixers, a gap between the pair of material guide channels, a gap between the pair of pre-pressing rollers and a gap between the pair of pressing rollers form a moving channel of the current collector. The utility model discloses an electrode dry process preparation facilities is used for the dry process to prepare the electrode, and the blendor is used for the powder misce bene, and the guide passageway can improve the homogeneity of feeding, and the pre-compression roller is pressed into the material membrane with the powder earlier, is pressed into the type again by the pressfitting roller with mass flow body and both sides material membrane, and the mass flow body combines effectually with the powder, and processing steps is simple, electrode product quality height.

Description

Electrode dry preparation device

Technical Field

The utility model relates to an electrode production facility technical field particularly, relates to an electrode dry process preparation facilities.

Background

The preparation of common electrodes includes dry preparation and wet preparation, wherein the wet preparation process is more common, i.e. solid powder is fully dispersed or stirred in water or organic solvent to be made into slurry or paste, coated and collected on a current, and then dried to be made into electrodes, and some electrodes are compacted again after being dried. The wet preparation process has the advantages of easy material mixing, convenient coating and easy large-scale production. Therefore, the method is widely applied to the lithium batteries, lead-acid batteries and alkaline batteries at present and is a mainstream production process. However, the wet method for preparing the electrode also has the defects that energy is wasted for drying; if an organic solvent is adopted, the environment is easily polluted; some materials may be dissolved or chemically reacted under the action of the solvent.

The dry method for preparing the electrode can avoid a plurality of problems caused by a wet method process due to a solvent, in the production of the nickel-hydrogen battery, the nickel electrode is generally produced by the dry method, specifically, nickel hydroxide is brushed into holes of the foamed nickel by a brush and then is pressed and molded, but the electrode prepared in the way is easy to remove powder. The Chinese patent of invention discloses (CN102569719A) a method for preparing an electrode by a dry method, which comprises the steps of preparing a carbon material film, and then bonding the film on two sides of a current collector, wherein the process is complex. The existing dry process has the problem that the powder cannot be uniformly mixed, so that the binding force of the material is poor, and the quality of an electrode product is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is how to improve the bonding effect of powder homogeneity of mixture and material.

In order to solve the technical problem, the utility model provides an electrode dry process preparation facilities, including setting gradually:

a pair of blenders for mixing powder;

the inlet of each material guide channel is communicated with the outlet of the corresponding mixer;

a pair of pre-pressing rollers for pressing the powder into a material film;

the pair of pressing rollers is used for pressing and molding the current collector and the material films on the two sides;

the cutter is used for cutting the laminated material belt;

and a gap between the pair of material mixers, a gap between the pair of material guide channels, a gap between the pair of pre-pressing rollers and a gap between the pair of pressing rollers form a moving channel of the current collector.

The utility model discloses an electrode dry process preparation facilities is used for the dry process to prepare the electrode, and the blendor is used for the powder misce bene, and the guide passageway can improve the homogeneity of feeding, and the pre-compression roller is pressed into the material membrane with the powder earlier, is pressed into the type again by the pressfitting roller with mass flow body and both sides material membrane, and the mass flow body combines effectually with the powder, and processing steps is simple, electrode product quality height.

Further, the mixer is selected from one of a solid powder coating machine, a traditional Chinese medicine grinder, a ball mill and an air flow mill. The mixer can realize strong stirring action and is matched with grinding action to fully disperse and uniformly mix powder.

Further, the blendor includes the feeder hopper, the feeder hopper bottom is equipped with spreads the mouth. The arrangement of the spreading openings is beneficial to the uniform distribution of the powder.

Further, the material guide channel is of a wedge-shaped structure and gradually shrinks from the inlet to the outlet. The guide channel of wedge structure is favorable to the powder ejection of compact, and with the feeder hopper cooperation, the material of guaranteeing the exit is even.

Furthermore, an ultrasonic vibration device is arranged on the side wall of the material guide channel. The ultrasonic vibration device can adjust the discharging speed and the discharging density of the material guide channel.

Furthermore, material collecting scrapers are arranged on two sides of the pre-pressing roller, and the bottom of each material collecting scraper is attached to the corresponding pressing roller. The material receiving scraper plate can separate the uncompacted materials and recycle the separated materials.

Further, the length of the pre-pressing roller is equal to the width of the current collector. The material film is matched with the current collector in size, and can be aligned and attached to the current collector.

Further, the pressing roller is provided with a heating device. The heating of the press-fit roller is beneficial to improving the cleanliness of the surface of the pole piece.

Further, the electrode dry preparation device also comprises a guide roller for limiting the moving path of the current collector, and the current collector is arranged around the guide roller in a tensioning mode.

Drawings

FIG. 1 is a layout diagram of an electrode dry preparation device in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an electrode dry-process preparation device in the embodiment of the present invention.

Description of the reference numerals:

1-a mixer, 2-a feed hopper, 3-a material guide channel, 4-an ultrasonic vibration device, 5-a pre-pressing roller, 6-a material receiving scraper, 7-a pressing roller, 8-a cutter, 9-a guide roller and 10-a current collector.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to fig. 1 and fig. 2, this embodiment provides a dry electrode manufacturing apparatus, which is used for dry electrode manufacturing, and includes a pair of material mixers 1, a pair of material guiding channels 3, a pair of pre-pressing rollers 5, a pair of pressing rollers 7, and a cutter 8, where the material mixers 1, the material guiding channels 3, the pre-pressing rollers 5, and the pressing rollers 7 are sequentially arranged from top to bottom, and are matched with a manufacturing process of an electrode, and a gap between the pair of material mixers 1, a gap between the pair of material guiding channels 3, a gap between the pair of pre-pressing rollers 5, and a gap between the pair of pressing rollers 7 form a moving channel of a current collector 10. The material mixing machine 1 is used for mixing powder materials, an inlet of the material guide channel 3 is communicated with an outlet of the material mixing machine 1 correspondingly and used for uniform feeding, the prepressing roller 5 is used for pressing the powder materials into material films, the pressing roller 7 is used for pressing and molding the current collector 10 and the material films on two sides, and the cutter 8 is arranged on one side of the pressing roller 7 and used for cutting the pressed material belts. The electrode is prepared by the electrode dry preparation device, the uniform mixing of powder can be ensured, the combination effect of the current collector 10 and the powder is good, the quality of an electrode product is high, the process steps are simple, and the production efficiency is high.

The electrode dry preparation device also comprises two guide rollers 9, wherein one guide roller 9 is positioned above the material mixer 1, the other guide roller is positioned below the pressing roller 7 and used for limiting a moving path of a current collector 10, and the current collector 10 is arranged around the guide rollers 9 in a tensioning manner. In other embodiments, the number of the guide rollers 9 is one or more, and the arrangement may be performed according to the position of each device in the system, so as to keep the current collector 10 passing through the gap between the pair of material mixers 1, the gap between the pair of material guiding channels 3, the gap between the pair of pre-pressing rollers 5, and the gap between the pair of stitching rollers 7.

In this embodiment, the mixer 1 is a solid powder coating machine, which can realize strong stirring action and fully disperse and uniformly mix the powder material in cooperation with grinding action; and the solid powder coating machine can enable the adhesive in the powder to be fiberized to a certain degree, thereby being beneficial to playing the bonding role. Blendor 1 includes

feeder hopper

2, and 2 bottoms of feeder hopper are equipped with and spread the mouth, set up to spread the mouth and be favorable to powder evenly distributed. In other embodiments, the material mixer 1 may be selected from one of a traditional Chinese medicine pulverizer, a ball mill and a jet mill.

Further, the mixer 1 is provided with a drying device, and the mixer 1 has a drying function and can meet the production process requirements of the emulsion type adhesive.

The material guide channel 3 is in a wedge-shaped structure, and the material guide channel 3 is gradually reduced from an inlet to an outlet. One difficulty in dry electrode preparation is that the powder is difficult to distribute uniformly, and the system utilizes the working principle of a spreader to solve the problem. The material is spread into a wedge-shaped material guiding channel 3 through a spreading opening at the bottom of the feed hopper 2, so that the material at a strip-shaped outlet at the bottom of the material guiding channel 3 is uniform.

Referring to fig. 1 and 2, an ultrasonic vibration device 4 is disposed on a side wall of the material guiding channel 3, the ultrasonic vibration device 4 is disposed near an outlet of the material guiding channel 3, and the ultrasonic vibration device 4 can adjust a discharging speed and a discharging density to ensure smooth discharging of the material.

The material is sent to a gap between the prepressing roller 5 and the pressing roller 7 through the material guide channel 3, and the prepressing roller 5 is matched with the corresponding pressing roller 7 to press the material into a material film. The length of the pre-pressing roller 5 is equal to the width of the current collector 10, so that the pressed material film is matched with the current collector 10 in size and can be aligned and attached to the current collector 10. And the two sides of the prepressing roller 5 are provided with material receiving scrapers 6, the bottom of each material receiving scraper 6 is arc-shaped and is attached to the corresponding press-fit roller 7, and the material receiving scrapers 6 are used for shaping a material film, separating materials which are not compacted by the prepressing roller 5 and recycling the separated materials.

The current collector 10 passes through the gap between the pair of press rollers 7, and the material films pressed by the two pre-pressing rollers 5 symmetrically enter the gap between the press rollers 7 from the two sides of the current collector 10, and are pressed and molded by the press rollers 7. The pressing roller 7 is provided with a heating device, and the pressing roller 7 is heated before pressing, so that the cleanliness of the surface of the pole piece can be improved. The pressed material belt continuously moves towards the cutter 8, and the cutter 8 cuts out the electrodes.

According to the electrode dry preparation device, the mixer 1 uniformly mixes the powder, the principle of a spreader is introduced to feed the powder, the uniformity of powder feeding is improved, the prepressing roller 5 presses the powder into the material film, and then the pressing roller 7 presses and molds the current collector 10 and the material films on two sides, so that the current collector 10 and the powder are good in combination effect, the process steps are simple, and the electrode product is high in quality.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The electrode dry preparation device is characterized by comprising the following components in sequence:

a pair of blenders (1) for mixing powder;

the inlet of the material guide channel (3) is communicated with the outlet of the corresponding mixer (1);

a pair of pre-pressing rollers (5) for pressing the powder into a material film;

a pair of pressing rollers (7) for pressing and molding the current collector (10) and the material films on the two sides;

the cutter (8) is used for cutting the pressed material belt;

and a gap between the pair of material mixers (1), a gap between the pair of material guide channels (3), a gap between the pair of pre-pressing rollers (5) and a gap between the pair of pressing rollers (7) form a moving channel of the current collector (10).

2. The dry electrode preparation device according to claim 1, wherein the mixer (1) is selected from one of a solid powder coating machine, a traditional Chinese medicine pulverizer, a ball mill and a jet mill.

3. The dry electrode preparation device according to claim 2, characterized in that the mixer (1) comprises a feed hopper (2), and the bottom of the feed hopper (2) is provided with a dispersion opening.

4. The electrode dry preparation device according to claim 1, characterized in that the material guiding channel (3) is of a wedge-shaped structure, and the material guiding channel (3) is gradually reduced from an inlet to an outlet.

5. The dry electrode preparation device according to claim 4, characterized in that the side wall of the material guide channel (3) is provided with an ultrasonic vibration device (4).

6. The dry electrode preparation device according to claim 1, wherein material receiving scrapers (6) are arranged on two sides of the pre-pressing roller (5), and the bottom of the material receiving scrapers (6) is attached to the pressing roller (7).

7. The dry electrode manufacturing device according to claim 6, characterized in that the length of the pre-press roll (5) is equal to the width of the current collector (10).

8. The dry electrode preparation device according to claim 1, wherein the stitching roller (7) is provided with a heating device.

9. The electrode dry preparation device according to any one of claims 1 to 8, further comprising a guide roller (9) for defining a moving path of the current collector (10), wherein the current collector (10) is placed in tension around the guide roller (9).