Rolling, rolling and dust removing device for flexible lithium battery

Abstract

The utility model discloses a flexible lithium battery rolling, rolling and dust removing device which comprises a dust removing box, a feeding port and a discharging port are formed in the dust removing box, two sets of cleaning rollers capable of rotating oppositely are arranged in the dust removing box, and an electrode plate channel is formed between the two sets of cleaning rollers. And air blowing and dust collection mechanisms are arranged in the dust removal box and located on the two sides of the electrode slice channel. According to the rolling, winding and dust removing device for the flexible lithium battery, the dust removing box can be installed at the feeding end of an electrode slice winding machine, and an electrode slice enters the dust removing box from the feeding port, passes through the electrode slice channel in the dust removing box and then is output from the discharging port; the cleaning rollers on the two sides can remove dust on the surfaces of the two sides of the electrode plate, and meanwhile, the air blowing and dust suction mechanisms on the two sides can blow off the dust and suck the dust, so that it is ensured that dust particles on the surfaces of the two sides of the electrode plate can be removed to the maximum extent, and the influence of the dust particles on the quality of a battery finished product is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a flexible lithium battery rolling and winding dust removal device. Background Art

[0002] During the winding production process of flexible lithium batteries, dust and other particles will fall onto the surface of the electrode sheet. These dust particles will affect the performance of the finished battery cell. Larger particles will even pierce the diaphragm, eventually causing the positive and negative electrode sheets to contact and cause a short circuit, which poses a safety problem. The existing winding dust removal device generally adopts negative pressure dust removal. Although negative pressure dust removal can reduce dust particle pollution in the winding machine, it cannot remove floating dust particles on the electrode sheet. The prior art with patent number CN208261321U discloses a winding dust removal device, which is provided with a brush that can roll freely and a porous adsorption component that absorbs dust and particles. When the electrode sheet is transmitted on the electrode sheet transmission roller, the brush can contact and remove the dust and metal particles on the electrode sheet, and then the porous adsorption component absorbs the residue after cleaning. However, during the transmission process, the above-mentioned prior art can only clean one side of the electrode sheet, and its inner side surface has never been in contact with the dust removal device, and there is still a problem of inadequate cleaning. Summary of the invention

[0003] The utility model aims to solve at least one of the above-mentioned technical problems and provides a flexible lithium battery roller-pressed winding dust removal device, which can remove and absorb dust on the electrode sheet to ensure thorough cleaning.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A flexible lithium battery roller-pressed winding dust removal device comprises a dust removal box, wherein the dust removal box is provided with a feed port and a discharge port, wherein two groups of cleaning rollers capable of rotating in opposite directions are arranged inside the dust removal box, and an electrode sheet channel is formed between the two groups of cleaning rollers, and an air blowing dust suction mechanism is arranged inside the dust removal box and at positions on both sides of the electrode sheet channel.

[0006] As an improvement of the above technical solution, the electrode sheet channel is arranged along the height direction of the dust removal box, the feed port is opened at the top of the dust removal box and at a position corresponding to the electrode sheet channel, and the discharge port is opened at the bottom of the dust removal box and at a position corresponding to the electrode sheet channel.

[0007] As an improvement of the above technical solution, the two groups of air blowing and dust suction components include a plurality of blowing parts and a plurality of dust suction parts. The plurality of blowing parts are arranged on the upper end of the dust removal box, and an air inlet channel connected to the plurality of blowing parts is opened in the top of the dust removal box. The plurality of dust suction parts are arranged on the lower end of the dust removal box, and a negative pressure channel connected to the plurality of dust suction parts is opened in the bottom of the dust removal box.

[0008] As an improvement of the above technical solution, air intake connecting ports connecting the two groups of the air intake channels are provided at the top of the dust removal box and at positions located at both ends of the feed port, and the dust removal box is provided with an air intake pipe connecting one group of the air intake channels. Air suction connecting ports connecting the two groups of the negative pressure channels are provided at the bottom of the dust removal box and at positions located at both ends of the discharge port, and the dust removal box is provided with a negative pressure pipe connecting one group of the negative pressure channels.

[0009] As an improvement of the above technical solution, the two groups of cleaning rollers are rotatably installed inside the dust removal box via rotating shafts.

[0010] As an improvement of the above technical solution, the dust removal box is provided with a rotating motor whose driving end is connected to one group of the rotating shafts.

[0011] As an improvement of the above technical solution, an adhesive layer is provided on the outer surfaces of the two groups of cleaning rollers.

[0012] As an improvement of the above technical solution, arc guide strips are provided on the dust removal box and at positions on one side of the feed inlet and the discharge outlet.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] The flexible lithium battery roller-pressed winding dust removal device of the utility model can install the dust removal box on the feed end of the electrode sheet winding machine. The electrode sheet enters the dust removal box from the feed port, passes through the electrode sheet channel inside and is output from the discharge port. When the electrode sheet passes through the electrode sheet channel, the cleaning rollers on both sides can remove the dust on the surfaces of both sides of the electrode sheet. At the same time, the air blowing and dust suction mechanisms on both sides can also blow off the dust and suction it, ensuring that the dust particles on the surfaces of both sides of the electrode sheet can be removed to the greatest extent to prevent them from affecting the quality of the finished battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the utility model;

[0018] Figure 3 A cross-sectional view of an embodiment of the present utility model Figure 1 ;

[0019] Figure 4 A cross-sectional view of an embodiment of the present utility model Figure 2 ;

[0020] Figure 5 A cross-sectional view of an embodiment of the present utility model Figure 3 . DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is referred to as being "set in the middle", it does not only mean being set in the middle, as long as it is not set at both ends within the range defined by the middle. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] like Figures 1 to 5 As shown, the utility model provides a flexible lithium battery rolling and winding dust removal device, including a dust removal box 10, the dust removal box 10 is provided with a feed port 11 and a discharge port 12, the dust removal box 10 is provided with two sets of cleaning rollers 20 that can rotate in opposite directions, an electrode sheet channel 21 is formed between the two sets of cleaning rollers 20, and an air blowing and dust suction mechanism 30 is provided inside the dust removal box 10 and at positions on both sides of the electrode sheet channel 21. Among them, the device can be installed on an electrode sheet winding machine to remove dust from the electrode sheet.

[0025] In a specific embodiment of the present application, in order to ensure that both sides of the electrode sheet can be cleaned in place, the electrode sheet channel 21 is arranged along the height direction of the dust removal box 10, the feed port 11 is opened at the top of the dust removal box 10 and at a position corresponding to the electrode sheet channel 21, and the discharge port 12 is opened at the bottom of the dust removal box 10 and at a position corresponding to the electrode sheet channel 21. That is, the feed port 11 and the discharge port 12 are respectively arranged at the two ends of the electrode sheet channel 21, and at this time, the two groups of the air blowing and dust suction mechanisms 30 are respectively located on the left and right sides of the electrode sheet channel 21 to form airflow on both sides of the electrode sheet. Of course, in other embodiments, the electrode sheet channel 21 can also be arranged along the length direction of the dust removal box 10, and the feed port 11 and the discharge port 12 are respectively opened at the two ends of the length direction of the dust removal box 10, and the two groups of the air blowing and dust suction mechanisms 30 are respectively located at the upper and lower sides of the electrode sheet channel 21. In order to prevent the electrode sheets from being scratched by the edges of the feed port 11 and the discharge port 12, arc guide strips 13 are provided on the dust removal box 10 and on one side of the feed port 11 and the discharge port 12, which also guide the direction of the electrode sheets.

[0026] Furthermore, the two groups of the air blowing and dust collecting components 30 each include a plurality of blowing parts 31 and a plurality of dust collecting parts 32, wherein the plurality of blowing parts 31 are arranged on the upper end of the dust collecting box 10, and an air inlet channel 33 connected to the plurality of blowing parts 31 is provided in the top of the dust collecting box 10, and the plurality of dust collecting parts 32 are arranged on the lower end of the dust collecting box 10, and a negative pressure channel 34 connected to the plurality of dust collecting parts 32 is provided in the bottom of the dust collecting box 10. The blowing parts 31 can sweep the dust particles on the electrode sheet downward, and the dust collecting parts 32 can remove the dust at the bottom, thereby increasing the airflow inside the dust collecting box 10 and ensuring the dust removal effect.

[0027] Specifically, in order to connect the two groups of the air blowing and dust suction components 30, synchronous air supply and adsorption are performed. The top of the dust removal box 10 and the positions at both ends of the feed port 11 are provided with air intake connecting ports 35 connecting the two groups of the air intake channels 33, and the dust removal box 10 is provided with an air intake pipe 36 connecting one group of the air intake channels 33. The bottom of the dust removal box 10 and the positions at both ends of the discharge port 12 are provided with air suction connecting ports 37 connecting the two groups of the negative pressure channels 34, and the dust removal box 10 is provided with a negative pressure pipe 38 connecting one group of the negative pressure channels 34. The air intake pipe 36 is connected to an external air supply device, and the negative pressure pipe 38 is connected to an external negative pressure device. The air supply and negative pressure devices can adopt the existing technology and will not be described in detail in this application.

[0028] In a specific embodiment of the present application, the two groups of cleaning rollers 20 are rotatably installed inside the dust removal box 10 through the rotating shaft 22. Among them, the outer surfaces of the two groups of cleaning rollers 20 are provided with an adhesive layer, and when the electrode sheet moves along the electrode sheet channel 21, it can drive the two groups of cleaning rollers 20 to rotate in opposite directions, and can stick to the particles on the electrode sheet while rotating. Further, in order to ensure that the cleaning rollers 20 can rotate stably, the dust removal box 10 is provided with a rotating motor whose driving end is connected to one of the groups of rotating shafts 22. Specifically, in order to realize the synchronous rotation of the two groups of cleaning rollers 20 in opposite directions, mutually meshing gears can also be set on one end of the two groups of rotating shafts 22.

[0029] The flexible lithium battery roller-pressed winding dust removal device of the utility model can install the dust removal box 10 on the feed end of the electrode sheet winding machine. The electrode sheet enters the dust removal box 10 from the feed port 11, passes through the electrode sheet channel 21 inside, and is output from the discharge port 12. When the electrode sheet passes through the electrode sheet channel 21, the cleaning rollers 20 on both sides can remove the dust on the surfaces of both sides of the electrode sheet. At the same time, the air blowing and dust suction mechanisms 30 on both sides can also blow off the dust and suck it away, ensuring that the dust particles on the surfaces of both sides of the electrode sheet can be removed to the greatest extent to prevent them from affecting the quality of the finished battery.

[0030] The above embodiments are only used to illustrate the technical solution of the utility model but not to limit it. Any modification or equivalent substitution that does not deviate from the spirit and scope of the utility model shall be included in the scope of the technical solution of the utility model.

Claims

1. Flexible lithium battery rolling and dust removal device, characterized in that: It includes a dust removal box, which is provided with a feed inlet and a discharge port. Two groups of cleaning rollers that can rotate towards each other are arranged inside the dust removal box, and an electrode sheet channel is formed between the two groups of cleaning rollers. Air blowing and dust suction mechanisms are arranged inside the dust removal box and at positions on both sides of the electrode sheet channel.

2. The flexible lithium battery rolling and winding dust removal device according to claim 1 is characterized in that: The electrode sheet channel is arranged along the height direction of the dust removal box, the feed port is opened at the top of the dust removal box and at a position corresponding to the electrode sheet channel, and the discharge port is opened at the bottom of the dust removal box and at a position corresponding to the electrode sheet channel.

3. The flexible lithium battery rolling and winding dust removal device according to claim 2 is characterized in that: The two groups of air blowing and dust suction mechanisms include a plurality of blowing parts and a plurality of dust suction parts. The plurality of blowing parts are arranged on the upper end of the dust removal box, and an air inlet channel connected to the plurality of blowing parts is opened in the top of the dust removal box. The plurality of dust suction parts are arranged on the lower end of the dust removal box, and a negative pressure channel connected to the plurality of dust suction parts is opened in the bottom of the dust removal box.

4. The flexible lithium battery rolling and winding dust removal device according to claim 3 is characterized in that: The top of the dust removal box and the positions at both ends of the feed port are provided with air intake connecting ports connecting the two groups of the air intake channels, the dust removal box is provided with an air intake pipe connecting one group of the air intake channels, the bottom of the dust removal box and the positions at both ends of the discharge port are provided with air suction connecting ports connecting the two groups of the negative pressure channels, and the dust removal box is provided with a negative pressure pipe connecting one group of the negative pressure channels.

5. The flexible lithium battery rolling and winding dust removal device according to claim 1, characterized in that: The two groups of cleaning rollers are rotatably installed inside the dust removal box through rotating shafts.

6. The flexible lithium battery rolling and winding dust removal device according to claim 5, characterized in that: The dust removal box is provided with a rotating motor whose driving end is connected to one group of the rotating shafts.

7. The flexible lithium battery rolling and winding dust removal device according to claim 5, characterized in that: The outer surfaces of the two groups of cleaning rollers are both provided with an adhesive layer.

8. The flexible lithium battery rolling and winding dust removal device according to claim 1, characterized in that: Arc material guiding strips are arranged on the dust removal box and at positions on one side of the material inlet and the material outlet.

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