CN218227548U

CN218227548U - Mixing device and preparation equipment of electrode diaphragm

Info

Publication number: CN218227548U
Application number: CN202221707889.3U
Authority: CN
Inventors: 彭斌成; 许继臣; 刘超; 吴志亮
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2023-01-06
Anticipated expiration: 2032-07-04

Abstract

The utility model discloses a mixing device and electrode diaphragm preparation equipment, wherein the mixing device comprises a shell, a stirrer, a heater and a first driving piece, and a conveying channel is limited in the length direction of the shell; the stirrer comprises a rotating shaft and a spiral blade, the rotating shaft is arranged in the conveying channel and is rotationally connected with the shell, and the spiral blade is fixedly arranged on the peripheral surface of the rotating shaft and used for stirring the battery materials; at least one of the stirrer and the outer wall of the shell is provided with a heater, and the heater is used for heating the battery material in stirring; the first driving part is arranged on the shell and used for driving the stirrer to rotate so as to stir the battery materials of the conveying channel. The heater heats the battery materials, and the battery materials are in a plasticized state, so that the stirrer can stir the battery materials more uniformly; moreover, the battery materials in a plasticized state have less abrasion to the shell and the stirrer, so that the service life of the mixing device is ensured.

Description

Mixing device and preparation equipment of electrode diaphragm

Technical Field

The utility model relates to a technical field of battery especially relates to a mixing arrangement and battery diaphragm's preparation equipment.

Background

In the related art, the battery materials are usually mixed in a dry mixing mode, specifically, three powders of a binder, an active material and a conductive agent are mixed and then conveyed to a gap between two rollers, the two rollers rotate relatively to roll the battery materials into a required electrode diaphragm, and no solvent is added, so that the problems of poor uniformity of the battery materials, large abrasion of a mixing device and the like exist in the related art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a mixing arrangement has improved the degree of consistency of battery material to reduce the mixing arrangement wearing and tearing.

The utility model discloses still provide a preparation equipment of electrode diaphragm with agitator.

According to the utility model discloses mixing arrangement of first aspect embodiment includes:

a housing defining a transport channel along a length direction;

the stirrer comprises a rotating shaft and a helical blade, the rotating shaft is arranged in the conveying channel and is rotationally connected with the shell, and the helical blade is fixedly arranged on the peripheral surface of the rotating shaft and is used for stirring and mixing the battery materials;

the heater is arranged on the outer wall of the stirrer and/or the shell and is used for heating the battery materials in stirring;

the first driving piece is arranged on the shell and used for driving the stirrer to rotate so as to stir and mix the battery materials of the conveying channel.

According to the utility model discloses mixing arrangement has following beneficial effect at least: in the process of stirring and conveying the battery materials by the mixing device, the heater heats the battery materials, and the battery materials are in a plasticized state, so that the stirrer can stir the battery materials more uniformly; moreover, the battery materials in a plasticized state have less abrasion to the shell and the stirrer, so that the service life of the mixing device is ensured.

According to some embodiments of the invention, the heater is provided in the rotation axis of the stirrer for heating the stirrer when energized.

According to some embodiments of the present invention, a heating channel is provided in the rotation axis of the stirrer, through which gas or liquid can pass, and the heater is used for supplying gas or liquid for heating the stirrer to the heating channel.

According to some embodiments of the utility model, the agitator is provided with a plurality ofly, a plurality of the agitator set up side by side in transfer passage.

According to some embodiments of the invention, the agitator is provided with two, two the agitator the helical blade is crisscross to be set up.

According to some embodiments of the invention, the helical blades of the agitators are at least partially adjacent in a staggered arrangement.

According to the utility model discloses preparation equipment of electrode diaphragm of second aspect embodiment includes: the mixing device is used for stirring and heating the battery materials to enable the battery materials to be in a molten state;

and the inlet of the roller device is connected with the outlet of the mixing device and is used for receiving the battery material in a molten state, and the roller device is used for rolling the battery material in the molten state into an electrode diaphragm.

According to the utility model discloses preparation equipment of motor diaphragm has following beneficial effect at least: the stirrer stirs and heats the battery materials in the process of conveying the battery materials, the battery materials are in a plasticized state when the battery materials are conveyed to the position of the outlet, and the roller device rolls the battery materials in the plasticized state into the electrode diaphragm. It will be appreciated that the mixing device continuously plasticizes the cell mass and is used to feed the roll means, so that the roll means can continuously produce electrode membranes which can be produced more efficiently.

According to some embodiments of the utility model, the roll device includes two at least rolls and second driving piece, two the roll is parallel and the interval sets up to supply the molten state the battery material passes through, the second driving piece is used for the drive the roll rotates, with the molten state the battery material rolls into the electrode diaphragm.

According to some embodiments of the utility model, the roll device is still including setting up in two locating parts between the roll, two the setting is separated to the locating part, for the battery material passes through, wherein, at least one the locating part can be followed the axial direction slip of roll, with the adjustment the width of electrode diaphragm.

According to some embodiments of the utility model discloses a roll device still includes the third driving piece, the third driving piece with the locating part is connected for drive two locating part relative motion.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic view of the overall structure of an electrode diaphragm manufacturing apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a mixing device according to an embodiment of the present invention;

fig. 3 is a schematic view of the overall structure of the roll apparatus according to the embodiment of the present invention.

Reference numerals are as follows:

mixing device 100, housing 110, stirrer 120, rotating shaft 121, helical blade 122, first drive member 130; the roller device 200, the roller 210, the second driving element 220, the fixed width block 230, the third driving element 240, the servo motor 241, the transmission mechanism 242, the bidirectional screw rod 2421, the first mounting seat 2422, the second mounting seat 2423 and the pressing gap 250; a heater 300.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

According to a first aspect of the present invention, a mixing device 100 is disclosed, referring to fig. 1, comprising a housing 110, a stirrer 120, a heater 300 and a first driving member 130, wherein the housing 110 defines a conveying passage along a length direction; the stirrer 120 comprises a rotating shaft 121 and a helical blade 122, the rotating shaft 121 is arranged in the conveying channel and is rotatably connected with the shell 110, and the helical blade 122 is fixedly arranged on the outer circumferential surface of the rotating shaft 121 and is used for stirring the battery materials; the outer wall of the stirrer 120 and/or the shell 110 is provided with a heater 300, and the heater 300 is used for heating the battery material under stirring; the first driving member 130 is disposed on the housing 110, and the first driving member 130 is used for driving the stirrer 120 to rotate so as to stir the battery materials in the conveying channel.

Specifically, after the battery materials (the battery materials of three powders of the binder, the active material, and the conductive agent) are added into the housing 110, the first driving member 130 drives the agitator 120 to rotate, and the helical blade 122 of the agitator 120 conveys the battery materials along the conveying path, that is, from the inlet at the left end of the housing 110 to the outlet at the right end of the housing 110; and, the stirrer 120 stirs and kneads the battery materials during the transportation of the battery materials. Meanwhile, during the process of stirring and conveying the battery materials, the heater 300 gradually heats the battery materials in the conveying channel, and when the battery materials are conveyed to the outlet position of the right end of the shell 110, the battery materials are in a plasticized state. The plasticized battery material may be fed to a roll apparatus 200 (described in detail below), and the roll apparatus 200 rolls the battery material into an electrode membrane. It should be noted that, in the process of stirring and conveying the battery materials by the mixing device 100, the heater 300 heats the battery materials, and the battery materials are in a plasticized state, so that the stirrer 120 can stir the battery materials more uniformly; moreover, the plasticized battery material has less wear on the housing 110 and the agitator 120, which ensures the service life of the mixing device 100.

In addition, the battery material in a plasticized state is added into the roller device 200, so that the abrasion to the roller device 200 is small, the service life of the roller device 200 is ensured, the film forming difficulty of the electrode diaphragm is reduced, and the method is suitable for large-scale production.

It should be noted that, when the heater 300 heats the battery material, the agitator 120 conveys and agitates the battery material, so that the heater 300 can sufficiently and uniformly heat the battery material, and further the battery material can reach a plasticized state when being conveyed to the position of the outlet of the housing 110.

In some embodiments, the heater 300 is disposed on the agitator 120, the heater 300 heats the agitator 120, and the agitator 120 heats the battery material to plasticize the battery material, wherein the battery material may be heated by electric heating or steam. By heating the battery materials in the above manner, when the stirrer 120 stirs and conveys the battery materials, the stirrer 120 can also heat the battery materials uniformly, so that the battery materials quickly reach a plasticized state; moreover, the battery material can sufficiently absorb the heat generated by the stirrer 120, and the waste of heat is avoided.

As an alternative to the heater 300 being disposed on the stirrer 120, in some embodiments, the heater 300 is disposed on an outer wall of the housing 110 for heating the housing 110, and heating means such as electric heating or steam may be used. Specifically, the heater 300 heats the housing 110, and the temperature in the conveying passage is increased, and the battery material in the conveying passage is heated during the temperature increase, so that the battery material is converted into a plasticized state.

In some embodiments, the heater 300 includes a heating element disposed within the rotating shaft 121, which when energized, heats the agitator 120. It can be understood that the heating member is disposed inside the rotating shaft 121, and the heating member is effectively protected. Moreover, the heat generated by the heating element can be rapidly transmitted to each helical blade 122 through the rotating shaft 121, and the helical blades 122 heat the battery materials while stirring and conveying the battery materials.

Instead of the above-described heating manner, the rotary shaft 121 is provided with a heating passage for passing gas or liquid therethrough, and the heater 300 is used to supply gas or liquid for heating the stirrer 120 to the heating passage. It can be understood that, this application scheme adopts above-mentioned heating method, and high temperature gas or liquid are when heating the passageway, heat rotating shaft 121, and rotating shaft 121 transmits heat to helical blade 122, and helical blade 122 is when stirring, carrying the battery material to heat the battery material.

In some embodiments, referring to fig. 1 and 2, a plurality of stirrers 120 are provided, for example, two stirrers 120 are provided in the housing 110, and a plurality of stirrers 120 are provided in parallel in the conveying passage. Specifically, the plurality of stirrers 120 are used for stirring and conveying the battery materials at the same time, and the plurality of stirrers 120 cooperate with each other to convey the battery materials from the inlet at the left end of the casing 110 to the outlet at the right end of the casing 110. And, a heating element is provided in the rotating shaft 121 of each stirrer 120, and the heater 300 can plasticize the battery material when the battery material moves to the position of the outlet of the housing 110 during the rapid transportation of the battery material.

Further, the helical blade 122 of at least part adjacent agitator 120 sets up in the staggered way, and like this, agitator 120 assembles in the interior side of casing 110 more closely, and agitator 120 can carry out abundant stirring and heating to the battery material, makes the battery material can be the plastify state fast.

According to a second aspect of the present invention, there is disclosed an apparatus for preparing an electrode membrane, comprising the above-mentioned mixing device 100 and roller device 200, wherein the mixing device 100 is used for stirring and heating a battery material, so that the battery material is in a molten state; the inlet of the rolling device 200 is connected to the outlet of the mixing device 100 for receiving the battery material in a molten state, and the rolling device 200 is used for rolling the battery material in a molten state into an electrode film.

Specifically, the battery material is first added into the housing 110 of the mixing device 100, the helical blade 122 of the agitator 120 conveys the battery material to the exit position of the housing 110 and drops down to the roller device 200, and the roller device 200 forms the battery material into an electrode membrane. In addition, since the stirrer 120 also stirs and heats the battery material during the process of conveying the battery material, and the battery material is in a plasticized state when the battery material is conveyed to the outlet, the roll apparatus 200 is used for rolling the battery material in a molten state into an electrode membrane. It can be understood that the mixing device 100 continuously plasticizes the battery material and serves to feed the roll device 200, so that the roll device 200 can continuously produce the electrode membrane, which is produced efficiently.

In some embodiments, referring to fig. 1 and 3, the roller assembly 200 includes two rollers 210 and a second driving member 220, the two rollers 210 being disposed in parallel. The number of the second driving members 220 is two, the driving shafts of the two second driving members 220 are respectively connected with the central shaft of the roller 210, one second driving member 220 drives the roller 210 to rotate in the forward direction, and the other second driving member 220 drives the roller 210 to rotate in the reverse direction, that is, the two second driving members drive the two rollers 210 to move relatively. A pressing gap 250 is formed between the two rollers 210, and the battery material in a plasticized state passes through the pressing gap 250.

Specifically, after the mixing device 100 stirs and kneads the battery materials, the battery materials are conveyed to the inlet of the pressing gap 250, and at this time, the two rollers 210 move relatively, so that the battery materials at the inlet pass through the pressing gap 250. During the passage of the battery material through the press-fit gap 250, the two rollers 210 roll the battery material into an electrode membrane.

Further, the roll device 200 further includes two width-fixing blocks 230, and the two width-fixing blocks 230 are located between the two rolls 210. Each width-fixing block 230 has two arc-shaped surfaces, and both arc-shaped surfaces are attached to the circumferential surface of the roll 210. The two width-fixing blocks 230 are arranged separately, when the battery material passes through the pressing gap 250, the battery material passes through the two width-fixing blocks 230, and the distance between the two width-fixing blocks 230 is the width of the electrode membrane. The two width-fixing blocks 230 can slide along the axial direction of the roller 210, so that the distance between the two width-fixing blocks 230 is adjusted, and the width of the electrode membrane is adjusted. It can be seen that, when the electrode film is manufactured, the worker only needs to adjust the distance between the two width fixing blocks 230, so as to adjust the condition of the pressing gap 250, and further adjust the manufacturing width of the electrode film, and thus, the flexibility of the rolling device 200 is better. It should be noted that the distance between the two width-fixing blocks 230 may be automatically adjusted by using corresponding driving devices, or the distance between the two width-fixing blocks 230 may be manually adjusted.

Further, the roll device 200 further includes a third driving member 240, the third driving member 240 includes a servo motor 241 and a transmission mechanism 242, the transmission mechanism 242 includes a bidirectional screw rod 2421, a first mounting seat 2422 and a second mounting seat 2423, the first mounting seat 2422 is in threaded connection with a threaded section of the bidirectional screw rod 2421, the second mounting seat 2423 is in threaded connection with another threaded section of the bidirectional screw rod 2421, one width fixing block 230 is fixedly connected with the first mounting seat 2422, and the other width fixing block 230 is fixedly connected with the other width fixing block 230. The driving shaft of the servo motor 241 is connected to the end of the bidirectional screw 2421. Specifically, the servo motor 241 drives the bidirectional screw rod 2421 to rotate, and the thread directions of the two thread sections of the bidirectional screw rod 2421 are opposite, so that the first mounting seat 2422 and the second mounting seat 2423 move in the same direction or in opposite directions during the rotation of the bidirectional screw rod 2421, so as to control the two width-fixing blocks 230 to move in the same direction or in opposite directions, and further control the distance between the two width-fixing blocks 230.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims

1. Mixing arrangement for the mixing of battery material, its characterized in that includes:

a housing defining a transport channel along a length direction;

the stirrer comprises a rotating shaft and a spiral blade, the rotating shaft is arranged in the conveying channel and is rotationally connected with the shell, and the spiral blade is fixedly arranged on the peripheral surface of the rotating shaft and is used for stirring and mixing the battery materials;

the heater is arranged on the stirrer and/or the outer wall of the shell and is used for heating the battery materials in stirring;

the first driving piece is arranged on the shell and used for driving the stirrer to rotate so as to stir and mix the battery materials in the conveying channel.

2. The mixing device of claim 1, wherein the heater is disposed within a rotating shaft of the agitator for heating the agitator when energized.

3. The mixing device of claim 1, wherein a heating passage for passing gas or liquid is provided in the rotating shaft of the stirrer, and the heater is used for supplying gas or liquid for heating the stirrer to the heating passage.

4. The mixing device according to claim 1, wherein a plurality of said agitators are provided, and a plurality of said agitators are provided in parallel in said conveying path.

5. A mixing device according to claim 4, wherein there are two of said agitators, and said helical blades of both of said agitators are staggered.

6. The mixing device of claim 4, wherein at least some of the helical blades of adjacent stirrers are staggered.

7. The preparation equipment of electrode diaphragm is characterized by comprising:

the mixing device of any one of claims 1 to 6, which is used for stirring and heating battery materials to make the battery materials in a molten state;

8. The apparatus for preparing an electrode membrane according to claim 7, wherein the roller device comprises at least two rollers and a second driving member, the two rollers are arranged in parallel and spaced apart for passing the battery material in a molten state, and the second driving member is used for driving the rollers to rotate so as to roll the battery material in a molten state into the electrode membrane.

9. The apparatus for preparing an electrode membrane according to claim 7, wherein the roller device further comprises two position-limiting members disposed between the two rollers, the two position-limiting members being spaced apart from each other for passing the battery material, wherein at least one of the position-limiting members is capable of sliding along an axial direction of the rollers to adjust a width of the electrode membrane.

10. The apparatus for preparing an electrode membrane according to claim 9, wherein the roller device further comprises a third driving member, and the third driving member is connected to the position-limiting members for driving the two position-limiting members to move relatively.