CN219476770U - Battery cell feeding device and winding equipment - Google Patents

Abstract

The application relates to a electricity core material feeding unit and winding equipment, it includes: diaphragm conveyor and pole piece conveyor, diaphragm conveyor includes: the first heating device is arranged on at least one side of the diaphragm conveying path so that a first diaphragm heating area is formed on the diaphragm conveying path; the first passing roller is arranged on the diaphragm conveying path and is used for conveying the diaphragm; the pole piece conveying device is used for conveying pole pieces. According to the utility model, the first roller is used for conveying the diaphragm, and the first heating device is used for heating the diaphragm, so that the internal accumulated internal stress of the diaphragm is released through the high Wen Cujin diaphragm before the diaphragm is wound, and the diaphragm is prevented from being wrinkled or folded in the winding process.

Description

Battery cell feeding device and winding equipment

Technical Field

The application relates to the field of battery processing, in particular to a battery cell feeding device and winding equipment.

Background

The battery formed by combining the formed battery cells in a winding mode is called a winding battery, and after the preparation and the slitting of the pole piece and the diaphragm of the winding battery are completed, the pole piece and the diaphragm are wound in a battery cell winding machine to form the battery cells. Currently, in the winding process, since the stress of the separator is not released in advance, the separator is easily wrinkled and folded during the winding process.

Disclosure of Invention

The embodiment of the application provides a battery cell feeding device and winding equipment, which are used for solving the problem that a diaphragm is easy to fold or fold in the winding process in the related technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: in a first aspect, a cell feeding device is provided, including: diaphragm conveyor and pole piece conveyor, diaphragm conveyor includes: the first heating device is arranged on at least one side of the diaphragm conveying path, so that a first diaphragm heating area is formed on the diaphragm conveying path; the first roller is arranged on the diaphragm conveying path and is used for conveying the diaphragm; the pole piece conveying device is used for conveying pole pieces.

In some embodiments, the first heating device comprises: the first heating element and the fan are arranged on one side of the diaphragm conveying path; the fan is arranged at one side of the first heating piece far away from the diaphragm transmission path; wherein, one side of the first heating element, which is close to the diaphragm conveying path, is a first diaphragm heating area.

In some embodiments, the first heating device further comprises: the box body is arranged on one side of the diaphragm transmission path, and an air port is arranged on one side of the box body, which is close to the diaphragm transmission path; the first heating piece is arranged on the box body, the fan is arranged on one side of the box body far away from the diaphragm transmission path, and the position of the fan corresponds to the position of the air opening.

In some embodiments, the septum delivery device further comprises: the heating box is arranged on the diaphragm transmission path and is communicated with the box body through an air port.

In some embodiments, the septum delivery device further comprises: and a second heating device including a second heating member mounted on at least one first roller such that a second diaphragm heating zone is formed on a surface of the first roller.

In some embodiments, the septum delivery device further comprises: and the static eliminating device is arranged on at least one side of the diaphragm transmission path, so that a diaphragm static eliminating area is formed on the diaphragm transmission path.

In some embodiments, the static-removing device comprises an ion blower disposed on at least one side of the diaphragm transport path.

In some embodiments, the static eliminator further comprises a second passing roller, a cavity is formed in the middle of the second passing roller, an opening is formed in one end of the cavity, the ion fan is connected with the opening, and a through hole communicated with the inside of the cavity is formed in the surface of the second passing roller, so that a diaphragm static eliminating area is formed on the surface of the second passing roller.

In some embodiments, the pole piece conveying device comprises: the third roller and the pole piece conveying device are arranged on the pole piece conveying path and used for conveying the pole pieces; the pole piece conveying device is arranged on the pole piece conveying path.

In a second aspect, there is provided a winding apparatus comprising: the battery cell feeding device and the winding machine are arranged at the tail ends of the diaphragm transmission path and the pole piece transmission path, and the winding machine is used for winding the diaphragm and the pole piece.

The beneficial effects that technical scheme that this application provided brought include:

the embodiment of the application provides a battery core feeding device and winding equipment, first roller is crossed and is carried the diaphragm, and first heating device heats the diaphragm, makes the diaphragm release the internal stress of inside accumulation through high Wen Cujin diaphragm before the rolling, avoids coiling in-process diaphragm fold or discounting.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic overall structure of some implementations provided in the examples of the present application;

FIG. 2 is a schematic overall structure of other embodiments provided in the examples of the present application;

FIG. 3 is a schematic overall structure of still other implementations provided by examples of the present application;

FIG. 4 is a schematic view of a first heating device according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of an electrostatic discharge device according to an embodiment of the present application.

In the figure: 1. a first heating device; 10. a fan; 11. a first heating member; 12. a case; 13. an air port; 14. a heating box; 2. a first pass roller; 3. a static electricity removing device; 30. a second pass roller; 31. an opening; 32. a through hole; 4. a third pass roller; 5. a pole piece conveying device; 6. and (5) a winding machine.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

Referring to fig. 1 to 5, an embodiment of the present application provides a battery cell feeding device and a winding apparatus, which can solve the problem that a separator is easy to fold or be folded in a winding process in the related art.

In a first aspect, the present application provides a cell feeding device, comprising: diaphragm conveyor and pole piece conveyor, diaphragm conveyor includes: a first heating device 1 and a first roller 2, wherein the first heating device 1 is arranged on at least one side of the diaphragm conveying path so that a first diaphragm heating area is formed on the diaphragm conveying path; the first passing roller 2 is arranged on the diaphragm conveying path and is used for conveying the diaphragm; the pole piece conveying device is used for conveying pole pieces.

In this application, the first roller 2 carries the diaphragm, and first heating device 1 heats the diaphragm, makes the diaphragm release the internal stress of inside accumulation through high Wen Cujin diaphragm before the rolling, avoids the membrane fold or discounting in the coiling process.

The cell feeding device is used for conveying the diaphragm and the pole piece to the winding machine 6 for winding, and preheating treatment is needed before the diaphragm is wound. Because the diaphragm is processed through a stretching method in the production process, the diaphragm is of a loose and porous structure, and can deform through preheating treatment, the effect of releasing stress in advance is achieved, the diaphragm is contracted in advance, and the diaphragm is better attached to the pole piece during winding.

The separator is conveyed along a predetermined separator conveying path to a winder 6 to be wound, and the first heating device 1 is provided on one side of the separator conveying path to preheat the conveyed separator.

Among them, the preheating treatment has various forms such as:

in some possible embodiments, the first heating device 1 may include, but is not limited to: a first heating element 11 and a fan 10, the first heating element 11 being disposed on one side of the diaphragm conveying path; the fan 10 is arranged at one side of the first heating element 11 far away from the diaphragm conveying path; wherein, the first heating element 11 is a first diaphragm heating area near one side of the diaphragm conveying path.

In this embodiment, the first heating member 11 provides a heat source for heating the diaphragm, and the fan 10 is disposed on the side of the first heating member 11 away from the diaphragm conveying path, so that the diaphragm can be preheated by blowing the heat source to the diaphragm conveying path by wind power. The first heating member 11 may be a heating wire, a heating plate, a heating rod, or the like. Meanwhile, the first heating member 11 needs to be controlled to a temperature of 60-130 degrees, preferably 80-110 degrees, when heating.

In order to prevent the first heating element 11 from being exposed to the outside and causing scalding to an operator, the first heating device 1 further comprises a box body 12, wherein the box body 12 is arranged on one side of the diaphragm transmission path, and an air port 13 is arranged on one side of the box body 12, which is close to the diaphragm transmission path; the first heating element 11 is disposed on the case 12, the fan 10 is disposed on a side of the case 12 away from the diaphragm conveying path, and the position of the fan 10 corresponds to the position of the air port 13. The first heating element 11 is installed inside the box 12, an air opening 13 is arranged at one side of the box 12 close to the diaphragm transmission path, a heat source can be transmitted from the inside of the box 12 to the outside of the box 12 through the air opening 13, a fan 10 is arranged at one side of the box 12, the fan 10 is aligned with the air opening 13, and the air is conveyed by the fan 10 to blow the heat source from the inside of the box 12 to the diaphragm transmission path to preheat the diaphragm.

In this embodiment, in order to prevent the diffusion of the hot air and achieve a better heating effect, it is preferable that the diaphragm transporting device further includes a heating box 14, the heating box 14 is disposed on the diaphragm transporting path, the heating box 14 is communicated with the box body 12 through the air port 13, and since the heating box 14 is disposed on the diaphragm transporting path, the diaphragm passes through the heating box 14, and when the diaphragm is located in the heating box 14, it is heated by the hot air in the heating box 14.

In this embodiment, as shown in fig. 3, the first heating device 1 may be disposed on a single side of the diaphragm conveying path, and the first heating devices 1 may also be disposed on both sides of the diaphragm conveying path, as shown in fig. 1, the manner in which the first heating devices 1 are disposed on both sides of the diaphragm conveying path may make the heating of the diaphragm more uniform, and the preheating effect of the diaphragm better than the manner in which the first heating devices 1 are disposed on a single side of the diaphragm conveying path.

In other possible embodiments, the first heating device 1 comprises two first heating elements 11, the two first heating elements 11 being disposed opposite each other on two sides of the diaphragm conveying path. The first heating member 11 may be a heating wire, a heating plate, a heating rod, or the like. While the first heating member 11 is heated at a temperature of 60-130 degrees, preferably 80-110 degrees.

In this embodiment, as shown in fig. 2, the diameter of the first roller 2 is set to D1, and the distance D2 between the two first heating members 11 is set to D1 < D2 < 2D1.

The above embodiments are merely a plurality of possible implementations of the embodiments of the present application, and the embodiments of the present application are not limited thereto.

On the basis of the above embodiment, in this embodiment, the diaphragm conveying apparatus further includes: and the second heating device is arranged on one side of the diaphragm conveying path, so that a second diaphragm heating area is formed on the diaphragm conveying path. Specifically, the second heating means comprises a second heating element mounted on at least one first roller 2 such that the surface of the first roller 2 is formed with a second diaphragm heating zone. The second heating element can be a heating wire, a heating plate, a heating rod and the like, a placing groove is formed in the first roller 2, so that the second heating element is installed in the placing groove, a heat source is transmitted to the surface of the first roller 2 when the second heating element works, and the surface temperature of the first roller 2 can be controlled between 60 and 130 degrees by the second heating element, and the preferable temperature is 80 to 110 degrees. The membrane may be preheated simultaneously as the first pass roller 2 conveys the membrane.

The first heating device 1 and the second heating device can be matched for use, namely, the second heating device and the first heating device 1 preheat the diaphragm at the same time, so that the heating effect is better, the short circuit rate of the winding core during hot pressing and baking of the winding core is reduced, and the wrinkling condition of the winding core after formation is improved.

The battery cell feeding device comprises a plurality of first passing rollers 2, and each first passing roller 2 can be provided with a second heating device, or the number of the second heating devices can be smaller than that of the first passing rollers 2 in order to reduce cost.

Before the diaphragm is coiled, in order to effectively reduce the static electricity of diaphragm and reduce diaphragm surface dust, set up this electric core material feeding unit still includes: and the static eliminating device 3 is arranged on at least one side of the diaphragm transmission path, so that a diaphragm static eliminating area is formed on the diaphragm transmission path. Specifically, the static eliminator 3 includes an ion blower, which is disposed on at least one side of the diaphragm transmission path, and performs static elimination treatment on the surface of the diaphragm by outputting ion wind through the ion blower.

In order to make the effect of removing static better, the static-removing device 3 further comprises a second roller 30, a cavity is formed in the middle of the second roller 30, an opening 31 is formed in one end of the cavity, an ion fan is connected with the opening 31, a through hole 32 communicated with the inside of the cavity is formed in the surface of the second roller 30, and a diaphragm static-removing area is formed in the surface of the second roller 30. When the second passing roller 30 conveys the diaphragm, the through holes 32 on the second passing roller 30 can also output ion wind at the same time, so that a diaphragm static removing area is formed on the surface of the second passing roller 30, and static removing treatment is carried out on the surface of the diaphragm.

The static eliminating device 3 may be disposed before the first heating device 1 and the second heating device, that is, the membrane is subjected to static eliminating treatment by the static eliminating device 3 and then is subjected to preheating treatment; the static eliminating device 3 can be arranged behind the first heating device 1 and the second heating device, namely, the diaphragm is firstly subjected to preheating treatment and then is subjected to static eliminating treatment; the static eliminating device 3 may also be set inside the first diaphragm heating area, i.e. the diaphragm is pre-heated while being static eliminated in the static eliminating device 3.

On the basis of the above embodiment, in this embodiment, the pole piece conveying device further includes: the third roller 4 is arranged on the pole piece transmission path and used for conveying the pole piece; and the pole piece conveying device 5 is arranged on the pole piece conveying path. In this embodiment, the third over-roller 4 and the pole piece transferring device 5 are used to transfer the pole piece to the winding machine 6 for winding.

In a second aspect, the present application provides a winding apparatus comprising: the above battery cell feeding device and the winder 6, the winder 6 is located at the end of the diaphragm transmission path and the pole piece transmission path, and the winder 6 is used for winding the diaphragm and the pole piece.

In this application, the first roller 2 that crosses among the electric core material feeding unit carries the diaphragm, first heating device 1 heats the diaphragm, pole piece conveyor carries the pole piece, pass through electric core material feeding unit with pole piece and diaphragm and convey to winder 6 and coil, in the diaphragm conveying process, preheat the diaphragm, make the diaphragm pass through the internal stress that high Wen Cujin diaphragm release inside accumulation before the rolling, avoid coiling in-process diaphragm fold or discounting, short circuit rate when having reduced the core hot pressing and toasting, improve the fold situation after the core formation.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a electricity core material feeding unit which characterized in that, it includes:

a diaphragm delivery apparatus, the diaphragm delivery apparatus comprising: a first heating device (1) and a first roller (2), wherein the first heating device (1) is arranged on at least one side of the diaphragm conveying path so that a first diaphragm heating area is formed on the diaphragm conveying path; the first passing roller (2) is arranged on a diaphragm conveying path and is used for conveying the diaphragm;

the pole piece conveying device is used for conveying the pole pieces.

2. The cell feeding device according to claim 1, wherein the first heating device (1) comprises:

a first heating element (11), wherein the first heating element (11) is arranged on one side of the diaphragm conveying path;

a fan (10), wherein the fan (10) is arranged at one side of the first heating piece (11) far away from the diaphragm conveying path;

wherein, the first heating piece (11) is a first diaphragm heating area near one side of the diaphragm conveying path.

3. The cell feeding device according to claim 2, wherein the first heating device (1) further comprises:

the box body (12), the box body (12) is arranged at one side of the diaphragm transmission path, and an air port (13) is arranged at one side of the box body (12) close to the diaphragm transmission path;

the first heating piece (11) is arranged on the box body (12), the fan (10) is arranged on one side, far away from the diaphragm transmission path, of the box body (12), and the position of the fan (10) corresponds to the position of the air port (13).

4. The cell feeding device according to claim 3, wherein the membrane feeding device further comprises:

the heating box (14), heating box (14) set up on the diaphragm transmission path, heating box (14) are through wind gap (13) and box (12) intercommunication.

5. The cell feeding device of claim 4, wherein the membrane feeding device further comprises:

and the second heating device comprises a second heating piece which is arranged on at least one first roller (2) so as to form a second diaphragm heating area on the surface of the first roller (2).

6. The cell feeding device of claim 1, wherein the membrane feeding device further comprises:

and the static eliminating device (3) is arranged on at least one side of the diaphragm transmission path, so that a diaphragm static eliminating area is formed on the diaphragm transmission path.

7. The cell feeding device of claim 6, wherein: the static eliminating device (3) comprises an ion fan which is arranged on at least one side of the diaphragm transmission path.

8. The cell feeding device of claim 7, wherein:

the static eliminating device (3) further comprises a second passing roller (30), a cavity is formed in the middle of the second passing roller (30), an opening (31) is formed in one end of the cavity, the ion fan is connected with the opening (31), and a through hole (32) communicated with the inside of the cavity is formed in the surface of the second passing roller (30), so that a diaphragm static eliminating area is formed on the surface of the second passing roller (30).

9. The cell feeding device according to claim 1, wherein the pole piece feeding device comprises:

the third passing roller (4) is arranged on the pole piece transmission path and is used for conveying the pole pieces;

and the pole piece conveying device (5) is arranged on the pole piece conveying path.

10. A winding apparatus, characterized in that it comprises:

the cell feeding device according to any one of claims 1 to 9;

a winder (6) located at the end of the diaphragm and pole piece transmission paths, the winder (6) being for winding the diaphragm and pole piece.