CN216213631U

CN216213631U - Diaphragm hot cutting device

Info

Publication number: CN216213631U
Application number: CN202122344062.2U
Authority: CN
Inventors: 陈云; 李新标; 江军发
Original assignee: Dongguan Zeyuan Machine Co ltd
Current assignee: Guangdong Zeyuan Intelligent Equipment Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-04-05
Anticipated expiration: 2031-09-27

Abstract

The utility model discloses a diaphragm hot cutting device which comprises a fixing plate, a first current-conducting plate, a second current-conducting plate, an upper pressure plate, an upper heat-insulating plate, a lower heat-insulating plate and a heating assembly, wherein the lower heat-insulating plate is arranged at the front end of the fixing plate, the upper pressure plate is arranged on the fixing plate, the upper heat-insulating plate is arranged on the bottom surface of the upper pressure plate, the heating assembly is arranged between the upper heat-insulating plate and the lower heat-insulating plate, and the first current-conducting plate and the second current-conducting plate are respectively arranged at the left end and the right end of the upper heat-insulating plate and are pressed on the left end and the right end of the heating assembly. When the winding of the battery cell is finished, the power mechanism pushes the whole diaphragm hot cutting device to the diaphragm, and when the cutting edge of the heating plate or the heating wire just contacts the diaphragm, the power is instantly switched on, so that the cutting edge of the diaphragm or the heating wire instantly generates high temperature to cut off the diaphragm, the trimming edge of the diaphragm is smooth and flat, the powder falling of the ceramic diaphragm is avoided, and the production quality of the diaphragm and the cleanness and tidiness of the production environment are ensured.

Description

Diaphragm hot cutting device

Technical Field

The utility model relates to the field of lithium battery production, in particular to a diaphragm hot cutting device.

Background

The lithium battery has the characteristics of high energy density, portability and portability, and is actively used as an energy carrier in the fields of communication, digital cameras, video cameras, notebooks and the like. In the structure of the lithium battery, the diaphragm is one of the key inner layer components, and the excellent performance of the diaphragm determines the interface structure, the internal resistance and the like of the battery, and directly influences the characteristics of the battery, such as the capacity, the circulation, the safety performance and the like. The diaphragm is mainly used for separating the positive electrode and the negative electrode of the battery and preventing the short circuit caused by the contact of the two electrodes.

The existing lithium battery winding machine mostly adopts the serrated knife to cut off when the diaphragm is cut off, so that the diaphragm is trimmed to form a serrated shape, the ceramic diaphragm is easy to fall off, and meanwhile, the traditional cutter has large shearing force, and the diaphragm is easily pushed out from a clamping winding needle when the diaphragm is cut off forcefully, so that the production quality and the production environment of the diaphragm are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a diaphragm hot cutting device to solve the problems in the background art.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides a diaphragm hot cutting device, includes fixed plate, first current conducting plate, second current conducting plate, top board, goes up the heat insulating board, heat insulating board and heating element down, the heat insulating board is installed down on the front end of fixed plate, the top board is installed on the fixed plate, it installs to go up the heat insulating board on the bottom surface of top board, heating element installs go up the heat insulating board with down between the heat insulating board, first current conducting plate and second current conducting plate are installed respectively go up on the left and right sides both ends of heat insulating board and the pressfitting is in on the left and right sides both ends of heating element.

As a further elaboration of the above technical solution:

in the above technical scheme, the heating component is a heating sheet, the rear end of the heating sheet is arranged between the upper heat insulation plate and the lower heat insulation plate, and the front end of the heating sheet extends out from between the upper heat insulation plate and the lower heat insulation plate.

In the above technical scheme, the first current-conducting plate and the second current-conducting plate are respectively provided with a wiring hole, and external positive and negative leads are respectively fixedly connected with the wiring holes.

In the technical scheme, the wire connecting structure further comprises fixing screws, and the fixing screws sequentially penetrate through the fixing plate and the lower heat insulation plate from bottom to top to lock external positive and negative electrodes in the corresponding wire holes.

In the above technical solution, the first conductive plate and the second conductive plate are copper plates.

In the above technical scheme, the heating component is a heating wire, and the heating wire is arranged on the front ends of the upper heat insulation plate and the lower heat insulation plate.

In the above technical scheme, the heating wire further comprises a positive terminal and a negative terminal, the positive terminal and the negative terminal are respectively and fixedly connected with two ends of the heating wire, an external positive wire is fixedly connected with the positive terminal, and an external negative wire is fixedly connected with the negative terminal.

In the technical scheme, the front end of the fixing plate is recessed downwards to form a mounting step, the upper heat insulation plate and the lower heat insulation plate are mounted on the mounting step, and the upper pressure plate is mounted on the rear end of the fixing plate and extends forwards to be pressed on the upper heat insulation plate.

In the above technical scheme, the left end and the right end of the rear end of the fixing plate respectively extend outwards to form mounting lugs, and mounting holes are respectively formed in the mounting lugs.

Compared with the prior art, the utility model has the beneficial effects that: when the winding of the battery cell is finished, the power mechanism pushes the whole diaphragm hot cutting device to the diaphragm, and when the cutting edge of the heating plate or the heating wire just contacts the diaphragm, the power is instantly switched on, so that the cutting edge of the diaphragm or the heating wire instantly generates high temperature to cut off the diaphragm, the trimming edge of the diaphragm is smooth and flat, the powder falling of the ceramic diaphragm is avoided, and the production quality of the diaphragm and the cleanness and tidiness of the production environment are ensured.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of a heating wire according to the present invention.

In the figure: 1. a fixing plate; 11. mounting a step; 12. mounting a bump; 13. mounting holes; 2. a first conductive plate; 3. a second conductive plate; 21. a wiring hole; 4. an upper pressure plate; 5. an upper heat insulation plate; 6. a lower heat insulation plate; 7. a heat generating component; 71. a heat generating sheet; 72. cutting a knife edge; 73. a heater; 8. a positive terminal; 9. and a negative terminal.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1-2, a diaphragm hot cutting device comprises a fixed plate 1, a first conductive plate 2, a second conductive plate 3, an upper pressing plate 4, an upper heat insulation plate 5, a lower heat insulation plate 6 and a heating assembly 7, wherein the lower heat insulation plate 6 is arranged at the front end of the fixed plate 1, the upper pressing plate 4 is arranged on the fixed plate 1, the upper heat insulation plate 5 is arranged on the bottom surface of the upper pressing plate 4, the heating assembly 7 is arranged between the upper heat insulation plate 5 and the lower heat insulation plate 6, and the first conductive plate 2 and the second conductive plate 3 are respectively arranged on the left end and the right end of the upper heat insulation plate 5 and are pressed on the left end and the right end of the heating assembly 7.

In this embodiment, as shown in fig. 1, the heat generating component 7 is a heat generating sheet 71, a rear end of the heat generating sheet 71 is installed between the upper heat insulating plate 5 and the lower heat insulating plate 6, and a front end of the heat generating sheet extends out from between the upper heat insulating plate 5 and the lower heat insulating plate 6. The heating sheet 71 extends out from the space between the upper heat insulation plate 5 and the lower heat insulation plate 6 to form a cutting edge 72, the cutting edge 72 is in contact with the diaphragm, and the diaphragm is cut off by instantly generating high temperature after being electrified.

Specifically, as shown in fig. 1, wiring holes 21 are respectively formed in the first conductive plate 2 and the second conductive plate 3, and external positive and negative leads are respectively fixedly connected to the wiring holes 21. The wire connecting structure further comprises fixing screws (not shown), wherein the fixing screws sequentially penetrate through the fixing plate 1 and the lower heat insulation plate 6 from bottom to top to lock external positive and negative electrodes in the corresponding wire connecting holes 21, so that the connection of the wires is more stable and reliable. The first conductive plate 2 and the second conductive plate 3 are copper plates, so that the heating sheet generates high temperature more instantly.

In this embodiment, as shown in fig. 2, the heating element 7 is a heating wire 73, and the heating wire 73 is installed on the front ends of the upper and lower heat-

insulating plates

5 and 6. Specifically, the heating wire further comprises a positive terminal 8 and a negative terminal 9, wherein the positive terminal 8 and the negative terminal 9 are respectively fixedly connected with two ends of the heating wire 73, an external positive wire is fixedly connected with the positive terminal 8, and an external negative wire is fixedly connected with the negative terminal 9. When the heating component 7 is a heating wire 73, the heating wire 73 is connected with external positive and negative leads through the positive terminal 8 and the negative terminal 9, the heating wire 73 is in contact with the diaphragm, and high temperature is generated instantly to cut off the diaphragm after electrification.

The heating component 7 may be a heating sheet 71, a heating wire 73, or other components capable of generating heat, and the user may set the components according to actual situations, which is not limited in this embodiment.

As shown in FIG. 1, the front end of the fixing plate 1 is recessed downwards to form a mounting step 11, the upper heat insulation plate 5 and the lower heat insulation plate 6 are mounted on the mounting step 11, the upper pressing plate 4 is mounted at the rear end of the fixing plate 1 and extends forwards to be pressed on the upper heat insulation plate 5, and the structure is compact, so that the whole structure of the equipment is smaller, and the subsequent mounting is facilitated.

As shown in fig. 1, the left and right ends of the rear end of the fixing plate 1 respectively extend outward to form mounting bumps 12, and the mounting holes 13 are respectively formed in the mounting bumps 12, so that the subsequent equipment can be conveniently mounted on an external machine.

When the winding of the battery cell is finished, the power mechanism pushes the whole diaphragm hot cutting device to the diaphragm, and when the cutting edge 72 of the heating sheet 71 or the heating wire 73 just contacts the diaphragm, the power is instantly switched on, so that the cutting edge 72 of the heating sheet 71 or the heating wire 73 instantly generates high temperature to cut off the diaphragm, the trimming edge of the diaphragm is smooth and flat, the powder falling of the ceramic diaphragm is avoided, and the production quality of the diaphragm and the cleanness and tidiness of the production environment are ensured.

The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. The utility model provides a diaphragm hot cutting device, its characterized in that includes fixed plate, first current conducting plate, second current conducting plate, top board, last heat insulating board, heat insulating board and heating element down, the heat insulating board is installed down on the front end of fixed plate, the top board is installed on the fixed plate, it installs to go up the heat insulating board on the bottom surface of top board, heating element installs go up the heat insulating board with down between the heat insulating board, first current conducting plate and second current conducting plate are installed respectively go up on the both ends of the left and right sides of heat insulating board and the pressfitting is in on the both ends of the left and right sides of heating element.

2. A membrane hot cutting device according to claim 1, wherein the heat generating component is a heat generating sheet, the rear end of the heat generating sheet is installed between the upper heat insulating plate and the lower heat insulating plate, and the front end of the heat generating sheet extends out from between the upper heat insulating plate and the lower heat insulating plate.

3. The separator hot cutting device according to claim 2, wherein the first conductive plate and the second conductive plate are respectively provided with wiring holes, and external positive and negative leads are respectively fixedly connected with the wiring holes.

4. The membrane hot cutting device according to claim 3, further comprising fixing screws, wherein the fixing screws sequentially penetrate through the fixing plate and the lower heat insulation plate from bottom to top to lock external positive and negative leads in the corresponding wiring holes.

5. A membrane die cutting apparatus as claimed in claim 3, wherein said first and second conductive plates are copper plates.

6. A membrane hot cutting apparatus according to claim 1, wherein said heating element is a heating wire, said heating wire being mounted on the front ends of said upper and lower heat insulating plates.

7. The membrane hot cutting device according to claim 6, further comprising a positive terminal and a negative terminal, wherein the positive terminal and the negative terminal are respectively fixedly connected with two ends of the heating wire, an external positive wire is fixedly connected with the positive terminal, and an external negative wire is fixedly connected with the negative terminal.

8. A membrane hot cutting device according to claim 1, wherein the front end of the fixing plate is recessed downward to form a mounting step, the upper heat insulation plate and the lower heat insulation plate are mounted on the mounting step, and the upper pressing plate is mounted on the rear end of the fixing plate and extends forward to press-fit on the upper heat insulation plate.

9. The membrane hot cutting device according to claim 1, wherein the left and right ends of the rear end of the fixing plate respectively extend outwards to form mounting projections, and the mounting projections are respectively provided with mounting holes.