Lithium ion battery roll cutting position dust collection device

Abstract

The utility model discloses a lithium ion battery roll cutting position dust collection device which comprises a dust collection pipe. The side dust collection hole is formed in the side edge of the dust collection pipe; the dust collection cavity is formed in the dust collection pipe; and the side dust collection holes in the side edges of the dust collection pipes are combined with the dust collection cavity to carry out dust collection treatment on the pole pieces, and dust sucked into the dust collection cavity is filtered and discharged. According to the utility model, the opening structure is designed and the cavity structure is changed, so that the opening structure is more reasonable, and the problem of dust accumulation or hole blockage can be avoided; and the structure is more coordinated with the position of the pole piece and the pressure intensity of the cavity, so that the dust cleaning effect of the pole piece can be effectively enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium - ion batteries, and particularly relates to a dust suction device for the cutting and winding position of lithium - ion batteries. Background Art

[0002] In the production process of lithium - ion batteries, during the cutting and winding process, it is necessary to apply adhesive to the head and tail ends of the electrode sheets to prevent burrs at the cutting edges of the electrode sheets. This can avoid risks such as battery self - discharge, short - circuit, and thermal runaway caused by the burrs of the electrode sheets piercing the separator, and improve the safety of the battery. However, during the process of applying adhesive and cutting, dust will be generated. The accumulation or adsorption of dust on the electrode sheets will also cause battery short - circuit. Therefore, it is necessary to clean the electrode sheets after applying adhesive. For the dust removal of the electrode sheets after applying adhesive, first, a dust suction pipe is connected to a negative pressure device. When negative pressure is connected, the dust on the electrode sheets is sucked into the dust removal pipe cavity and then filtered and discharged. However, the currently used dust removal devices have unreasonable structural designs: the total weight of the dust suction device is too large, which easily causes the displacement of the dust suction pipe; the position design of the side dust suction holes on the dust suction pipe is unreasonable, resulting in too large a distance between the side dust suction holes and the electrode sheets; the design of the dust suction pipe cavity is unreasonable, and the cavity shape and size do not match the pressure of the negative pressure dust suction pipe. The unreasonable structural design of the dust suction device leads to poor dust suction effect, easily causes dust to remain on the electrode sheets, resulting in battery short - circuit and even thermal runaway, affecting the electrical performance (use) and safety performance of the battery.

[0003] The deficiencies of the prior art are that due to problems such as large weight, far distance between the side dust suction holes and the electrode sheets, and mismatch between the cavity shape and the negative pressure pipe pressure of the dust suction device, the cleaning effect of the dust on the electrode sheets is not good, and a large amount of dust remains on the electrode sheets; a large amount of dust remaining on the electrode sheets will cause problems such as battery self - discharge, short - circuit, and thermal runaway. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art. To achieve the above purpose, a dust suction device for the cutting and winding position of lithium - ion batteries is adopted to solve the problems raised in the above background art.

[0005] A dust suction device for the cutting and winding position of lithium - ion batteries includes:

[0006] A dust suction pipe;

[0007] Side dust suction holes provided on the side of the dust suction pipe; and

[0008] A dust suction cavity provided inside the dust suction pipe;

[0009] The electrode sheets are subjected to dust suction treatment through the side dust suction holes on the side of the dust suction pipe in combination with the dust suction cavity, and the dust sucked into the dust removal cavity is filtered and discharged.

[0010] As a further solution of the present utility model: The dust suction device further includes a baffle provided on the side of the dust suction pipe, and a sealant provided between the dust suction pipe and the baffle. By providing a baffle on the side of the dust suction pipe and the sealant between the baffle, the air leakage phenomenon during the dust suction process is effectively prevented, the dust suction efficiency is improved, the secondary pollution of the environment caused by dust overflow is reduced, and the airtightness of the device and the cleanliness of the working environment are enhanced.

[0011] As a further solution of the present utility model: The dust suction pipe includes a pipe body, a positive dust suction hole provided on the clamping side of the pipe body, a front end lock provided at the front end of the pipe body, a rear end lock provided on the side of the rear end of the pipe body, a negative pressure dust suction pipe connection port provided at the end of the tail end of the pipe body, and a wind speed test port provided on the side of the tail end of the pipe body. The specific structural design of the dust suction pipe, including the settings of the positive dust suction hole, the front end lock, the rear end lock, the negative pressure dust suction pipe connection port and the wind speed test port, makes the dust suction operation more flexible and convenient, can accurately control the dust suction range, and the setting of the wind speed test port is convenient for real-time monitoring and adjustment of the dust suction efficiency, improving the practicality of the overall device and the convenience of maintenance.

[0012] As a further solution of the present utility model: The dust suction cavity is in the structure of a quadrangular frustum. The dust suction cavity adopts the structure of a quadrangular frustum, increasing the volume from the dust suction port to the bottom of the cavity, which is beneficial to forming a vortex effect, improving the dust collection efficiency, and at the same time reducing the retention and deposition of dust in the cavity, ensuring the continuity of the dust suction effect and the self-cleaning ability of the cavity.

[0013] As a further solution of the present utility model: The positive dust suction hole and the side dust suction hole are in the structure of trapezoidal grooves. The positive dust suction hole and the side dust suction hole are designed in the structure of trapezoidal grooves, increasing the dust suction area of the dust suction holes, making the dust suction more comprehensive and thorough. At the same time, the design of the trapezoidal grooves is beneficial to guiding the air flow direction, reducing the air flow resistance, and improving the dust suction efficiency.

[0014] As a further solution of the present utility model: The rear end lock is located directly above or on the side of the pipe body of the dust suction pipe. By setting the rear end lock directly above or on the side of the pipe body of the dust suction pipe, it is convenient for users to perform connection and fixation operations from above or the side, improving the convenience and stability of installation, reducing the possibility of misoperation, and enhancing the use safety of the device.

[0015] As a further solution of the present utility model: The wind speed test port is located directly above or on the side of the dust suction pipe. The wind speed test port is located directly above or on the side of the dust suction pipe, which is convenient for users to directly observe and measure the wind speed change during the dust suction process, providing an intuitive basis for adjusting and optimizing the dust suction parameters, and improving the intelligent level and user experience of the device.

[0016] As a further solution of the present utility model: The negative pressure dust suction pipe connection port is used to connect a negative pressure device. The negative pressure dust suction pipe connection port is specially designed to connect a negative pressure device, ensuring the stable air pressure inside the dust suction system and the dust suction efficiency. At the same time, it clarifies the function and purpose of the interface, simplifies the connection and debugging process of the system, and improves the work efficiency.

[0017] Compared with the prior art, the present utility model has the following technical effects:

[0018] By adopting the above technical solution, through designing the opening structure and position, and modifying the cavity structure. By optimizing the weight of the dust suction device, the position of the side dust suction holes, and the cavity shape, the problem of dust suction pipe displacement is solved, and the cleaning effect of the dust suction device is improved. Problems such as self-discharge, short circuit, and thermal runaway of the battery are avoided, the quality of the battery is improved, and the normal production and use of the battery are ensured. Description of the Drawings

[0019] The following will describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings:

[0020] Figure 1 It is the front view of the dust suction device of the disclosed embodiment of the present application;

[0021] Figure 2 It is the top view of the dust suction device of the disclosed embodiment of the present application;

[0022] Figure 3 It is the rear view of the dust suction device of the disclosed embodiment of the present application;

[0023] Figure 4 It is the structural schematic diagram of the dust suction cavity of the disclosed embodiment of the present application;

[0024] Figure 5 It is the working schematic diagram of the dust suction device of the disclosed embodiment of the present application.

[0025] In the figure: 1. Dust suction pipe; 11. Side dust suction hole; 12. Front dust suction hole; 13. Front end lock; 14. Rear end lock; 15. Wind speed test port; 16. Negative pressure dust suction pipe connection port; 17. Dust suction cavity; 2. Sealing glue; 3. Baffle; 4. Pole piece. Specific Embodiment

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0027] Please refer toFigure 1 and Figure 2 In an embodiment of the present utility model, a dust suction device for a lithium-ion battery cutting and winding cutting position includes:

[0028] A dust suction pipe 1;

[0029] Side dust suction holes 11 provided on the side of the dust suction pipe 1; and

[0030] A dust suction cavity 17 provided inside the dust suction pipe 1;

[0031] The pole piece 4 is subjected to dust suction treatment through the side dust suction holes 11 on the side of the dust suction pipe 1 in combination with the dust suction cavity 17, and the dust sucked into the dust removal cavity is filtered and discharged.

[0032] In this embodiment, as Figure 3 shown, the figure is a rear view of the dust suction device; the dust suction device further includes a baffle 3 provided on the side of the dust suction pipe 1, and a sealant 2 provided between the dust suction pipe 1 and the baffle 3.

[0033] In this embodiment, two dust suction pipes 1 are adopted, and each dust suction pipe 1 includes a pipe body, a positive dust suction hole 12 provided on the clamping side of the pipe body, a front end lock 13 provided at the front end of the pipe body, a rear end lock 14 provided on the side of the rear end of the pipe body, a negative pressure dust suction pipe connection port 16 provided at the end of the tail end of the pipe body, and a wind speed test port 15 provided on the side of the tail end of the pipe body.

[0034] In this embodiment, as Figure 4 shown, the figure is a schematic structural diagram of the dust suction cavity; the dust suction cavity 17 is a frustum of a pyramid structure, and the lengths and widths of the dust suction cavities 17 of the two dust suction pipes 1 are the same; due to the different lengths of the front end locks 13, the total lengths of the dust suction pipes 1 are different. The total weight of the two dust suction pipes 1 is reduced from 2376.96 grams to 1588.47 grams; reducing the weight of the dust suction pipe 1 not only solves the problem of the dust suction pipe 1 shifting due to its excessive weight, but also saves the material consumption.

[0035] Among them, the dust suction cavity 17 is changed from the existing frustum of a cone (upper circle diameter 19.42 mm, lower circle diameter 30 mm, height 411.5 mm) to a frustum of a pyramid. Specifically, the side length of the upper cross-section square is 9.33 mm, the side length of the lower cross-section square is 27.49 mm, and the height is 376 mm. The front end locks 13 of the two dust suction pipes 1 are both located at the front end of the dust suction pipe 1 (with the negative pressure dust suction pipe connection port 16 as the rear end);

[0036] In this embodiment, the positive dust suction holes 12 and the side dust suction holes 11 are in the structure of trapezoidal grooves, and are both located in the upper middle part of the dust suction pipe 1 (taking the negative pressure dust suction pipe connection port 16 as the lower part of the dust suction pipe 1), and are respectively facing the pole piece 4 frontally and laterally. The positive dust suction holes 12 and the side dust suction holes 11 are both changed from the existing circular holes (a row of completely independent single small holes with a hole diameter of 3 mm and a total length of 220 mm for a row of circular holes) to trapezoidal grooves (connecting the original N independent small holes in a row to form a trapezoidal groove: the upper base is 1.5 mm, the lower base is 3 mm, and the height is 220 mm), optimizing the structure of the dust suction holes, solving the problem of blockage of the original dust suction holes due to unreasonable hole-opening structure, and enhancing the dust removal effect on the surface of the pole piece 4.

[0037] In this embodiment, both dust suction pipes 1 are provided with rear locks 14, and the rear locks 14 are respectively located directly above or on the side of the pipe bodies of the two dust suction pipes 1.

[0038] In this embodiment, both dust suction pipes 1 are provided with wind speed test ports 15, and the wind speed test ports 15 are located directly above or on the side of the dust suction pipes 1.

[0039] In this embodiment, the negative pressure dust suction pipe connection port 16 is used to connect a negative pressure device.

[0040] In this embodiment, as Figure 5 shown, the figure is a working schematic diagram of the dust suction device; first, place the pole piece 4 between the two dust suction pipes 1, and the positive dust suction holes 12 are directly facing the pole piece 4; then connect the negative pressure device; when negative pressure is applied, the dust on the pole piece 4 is sucked into the dust removal cavity and then filtered and discharged.

[0041] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0042] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dust suction device for the cutting and winding cutting position of a lithium-ion battery, characterized in that, Comprising: A dust suction pipe (1); A side dust suction hole (11) provided on the side of the dust suction pipe; And A dust suction cavity (17) provided inside the dust suction pipe; The pole piece is subjected to dust suction treatment through the side dust suction hole on the side of the dust suction pipe in combination with the dust suction cavity, and the dust sucked into the dust suction cavity (17) is filtered and discharged.

2. The dust suction device for the lithium-ion battery cutting and winding cutting position according to claim 1, characterized in that, The dust suction device further includes a baffle (3) provided on the side of the dust suction pipe, and a sealant (2) provided between the dust suction pipe and the baffle.

3. The dust suction device for the lithium-ion battery cutting and winding cutting position according to claim 2, characterized in that, The dust suction pipe includes a pipe body, a front dust suction hole (12) provided on the clamping side of the pipe body, a front end lock (13) provided at the front end of the pipe body, a rear end lock (14) provided on the side of the rear end of the pipe body, a negative pressure dust suction pipe connection port (16) provided at the end of the tail end of the pipe body, and a wind speed test port (15) provided on the side of the tail end of the pipe body.

4. The dust suction device for the lithium-ion battery cutting and winding cutting position according to claim 3, characterized in that, The dust suction cavity (17) has a frustum of a pyramid structure.

5. The dust suction device for the lithium-ion battery cutting and winding cutting position according to claim 3, characterized in that, The front dust suction hole (12) and the side dust suction hole (11) have a trapezoidal groove structure.

6. The dust suction device for the lithium-ion battery cutting and winding cutting position according to claim 3, characterized in that, The rear end lock (14) is located directly above or on the side of the pipe body of the dust suction pipe (1).

7. The dust suction device for the lithium-ion battery cutting and winding cutting position according to claim 3, characterized in that, The wind speed test port (15) is located directly above or on the side of the dust suction pipe (1).

8. The dust suction device for the cutting and winding cutting position of a lithium-ion battery according to claim 3, wherein, The negative pressure dust suction pipe connection port (16) is used to connect a negative pressure device.

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