Lithium battery winding dust blowing device

Abstract

The utility model relates to a dust blowing device for lithium battery winding, and belongs to the technical field of lithium battery processing. The device mainly comprises a dust removal box, a sealing cover, a supporting table, an induced draft fan and a filtering layer, the device can simultaneously perform dust blowing operation in the winding process of the positive plate, the diaphragm and the negative plate, effectively remove powder and dust on the surface of the pole plate, improve the processing quality and safety of the lithium battery, do not need to stop moving the positive plate, the diaphragm and the negative plate, do not influence the processing progress and efficiency of the lithium battery, can realize continuous operation, and can reduce the production cost. The production efficiency is improved, the induced draft fan introduces external air into the dust removal box to form airflow circulation, the air outlets are formed in the upper surfaces and the lower surfaces of the positive plate through groove, the diaphragm through groove and the negative plate through groove correspondingly, dust blowing can be conducted on the two faces of a positive plate, a diaphragm and a negative plate at the same time, thorough cleaning is guaranteed, and the machining quality of the lithium battery is improved.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery processing technology, specifically relating to a lithium battery winding dust blowing device. Background Technology

[0002] Lithium battery winding machines use a winding process to sequentially stack the positive electrode, separator, and negative electrode and then wind them together. During the winding process, the positive electrode sheet, separator, and negative electrode sheet are guided by guide rollers and enter the pressure rollers of the winding machine in a certain order and tension to be wound into a cylindrical or flat core. During the winding process, the edges of the positive and negative electrode sheets are prone to generating powder due to friction. Because of the irregular shape and conductivity of the electrode powder, the powder generated during the winding process can puncture the separator. At the same time, charged ions in the air are easily adsorbed, causing short circuits between the positive and negative electrode sheets. In severe cases, this can cause the battery to catch fire or explode. Therefore, powder removal is necessary.

[0003] Most existing dust removal devices on winding machines require cleaning the dust or debris on the surface of the positive electrode, separator, and negative electrode without moving them. This affects the processing progress and efficiency of lithium batteries. Moreover, the dust removal devices often can only remove dust from one side of the positive electrode, separator, and negative electrode, leaving the dust on the other side unremoved. This incomplete cleaning results in poor processing quality of lithium batteries. Utility Model Content

[0004] To overcome the problems of existing winding machines that mostly perform dust removal on stationary positive electrode sheets, separators, and negative electrode sheets, and whose dust removal devices often only clean dust from one side of the positive electrode sheet, separator, and negative electrode sheet, this utility model provides a lithium battery winding dust blowing device. This device can perform dust blowing operations simultaneously during the winding process of the positive electrode sheet, separator, and negative electrode sheet without requiring the positive electrode sheet, separator, and negative electrode sheet to stop moving. The blower introduces external air into the dust removal box to form an airflow circulation. The air outlets are respectively set on the upper and lower surfaces of the positive electrode sheet through slot, separator through slot, and negative electrode sheet through slot, which can blow dust on both sides of the positive electrode sheet, separator, and negative electrode sheet at the same time, ensuring thorough cleaning and improving the processing quality of lithium batteries.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A lithium battery winding dust blowing device mainly includes a dust collection box, a cover, a support platform, an induced draft fan, and a filter layer. The dust collection box is configured as a cavity structure, and positive electrode plate through slots, diaphragm through slots, and negative electrode plate through slots are respectively opened on the dust collection box to facilitate the passage of positive electrode plates, diaphragm through slots, and negative electrode plate through slots. The upper and lower surfaces of the positive electrode plate through slots, diaphragm through slots, and negative electrode plate through slots are all provided with air outlets that communicate with the interior of the dust collection box cavity structure. The cover is installed on the top of the dust collection box, the support platform is installed on one side of the dust collection box, the induced draft fan is installed on the support platform, the air outlet of the induced draft fan communicates with the interior of the dust collection box, and the filter layer is installed at the air outlet of the induced draft fan.

[0006] A sealing ring is provided at the connection between the cover and the dust collection box.

[0007] The positive electrode through-slot, separator through-slot, and negative electrode through-slot are configured as rectangular structures, and the distance between the upper and lower surfaces of the positive electrode through-slot, separator through-slot, and negative electrode through-slot is greater than the thickness of the positive electrode, separator, and negative electrode.

[0008] The air outlet is evenly distributed in multiple locations.

[0009] The beneficial effects of this utility model are:

[0010] This device can simultaneously perform dust blowing during the winding of the positive electrode, separator, and negative electrode, effectively removing powder and dust from the electrode surface, improving the processing quality and safety of lithium batteries. It does not require the positive electrode, separator, and negative electrode to stop moving, thus not affecting the processing progress and efficiency of lithium batteries. It enables continuous operation, improving production efficiency. The induced draft fan introduces external air into the dust collection box, forming an airflow circulation. Air outlets are located on the upper and lower surfaces of the positive electrode through-slot, separator through-slot, and negative electrode through-slot, allowing for simultaneous dust blowing on both sides of the positive electrode, separator, and negative electrode, ensuring thorough cleaning and improving the processing quality of lithium batteries. Attached Figure Description

[0011] Figure 1 This is an isometric schematic diagram of the present invention.

[0012] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0013] Figure 3 This is a schematic diagram of the structure of this utility model viewed from below.

[0014] Figure 4 This is a partial cross-sectional view of the present invention.

[0015] Figure 5 This is another partial cross-sectional view of this utility model.

[0016] Figure 6 This is a schematic diagram of the working principle of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] This utility model discloses a lithium battery winding dust blowing device, which mainly includes a dust collection box 1, a cover 2, a support platform 3, an exhaust fan 4, and a filter layer 10. The dust collection box 1 is configured as a cavity structure. The dust collection box 1 is provided with positive electrode plate through groove 11, diaphragm through groove 12, and negative electrode plate through groove 13 to facilitate the passage of positive electrode plate 5, diaphragm 6, and negative electrode plate 7. The upper and lower surfaces of the positive electrode plate through groove 11, diaphragm through groove 12, and negative electrode plate through groove 13 are provided with air outlet holes 111 that communicate with the interior of the cavity structure of the dust collection box 1. The cover 2 is installed on the top of the dust collection box 1, the support platform 3 is installed on one side of the dust collection box 1, the exhaust fan 4 is installed on the support platform 3, and the air outlet of the exhaust fan 4 communicates with the interior of the dust collection box 1. The filter layer 10 is installed at the air outlet of the exhaust fan 4.

[0019] A sealing ring is provided at the connection between the cover 2 and the dust collector 1. The sealing ring at the connection between the cover 2 and the dust collector 1 can ensure the good sealing of the dust collector 1 and prevent dust from entering the interior of the dust collector 1 from the outside. At the same time, it also protects the internal airflow environment formed when the induced draft fan 4 is working, and avoids affecting the normal flow of airflow and dust blowing effect due to air leakage.

[0020] like Figure 1 , Figure 3 , Figure 4 , Figure 5 As shown, the positive electrode through-slot 11, separator through-slot 12, and negative electrode through-slot 13 are configured as rectangular structures. The distance between the upper and lower surfaces of the positive electrode through-slot 11, separator through-slot 12, and negative electrode through-slot 13 is greater than the thickness of the positive electrode 5, separator 6, and negative electrode 7. This ensures the smooth passage of the positive electrode 5, separator 6, and negative electrode 7. During the continuous production process of lithium battery winding, problems such as jamming of the positive electrode 5, separator 6, and negative electrode 7 due to unsuitable dimensions of the positive electrode through-slot 11, separator through-slot 12, and negative electrode through-slot 13 will not occur, which helps to improve the continuity and stability of the entire production process.

[0021] like Figure 4 , Figure 5 As shown, multiple air outlets 111 are evenly arranged; the multiple evenly arranged air outlets 111 can make the blown airflow more evenly distributed on the upper and lower surfaces of the positive electrode 5, the separator 6, and the negative electrode 7, thereby blowing away dust and debris more efficiently, which helps to reduce dust residue and improve the quality of lithium battery.

[0022] Work process:

[0023] like Figure 6As shown, the positive electrode 5, diaphragm 6, and negative electrode 7 are passed through the positive electrode slot 11, diaphragm slot 12, and negative electrode slot 13, respectively, and are wound into the pressure roller 9 of the winding machine under the guidance of the guide roller 8. The induced draft fan 4 is started, which draws in external air and sends it into the dust collector 1 through the air outlet. The filter layer 10 prevents dust from entering the dust collector 1 from the outside, avoiding pollution of the internal clean environment, thereby further ensuring the stability of the dust removal effect. The air entering the dust collector 1 is ejected from the air outlet 111 under pressure, forming an airflow. The airflow is then directed to... The dust-blowing device acts on the upper and lower surfaces of the positive electrode 5, separator 6, and negative electrode 7, blowing away the dust and powder on their surfaces. After dust removal, the positive electrode 5, separator 6, and negative electrode 7 continue to be wound to form a cylindrical or flat core. Throughout the winding process, the dust-blowing device works continuously to ensure the cleanliness of the surfaces of the positive electrode 5, separator 6, and negative electrode 7. Through the above process, this lithium battery winding dust-blowing device can remove dust and powder from the surfaces of the positive electrode 5, separator 6, and negative electrode 7 in real time during the winding process, improving the processing quality and safety of lithium batteries, as well as increasing production efficiency.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A lithium battery winding dust blowing device, characterized in that: The aforementioned lithium battery winding dust blowing device includes a dust collection box (1), a cover (2), a support platform (3), an induced draft fan (4), and a filter layer (10). The dust collection box (1) is configured as a cavity structure. The dust collection box (1) is provided with positive electrode plate through slots (11), diaphragm through slots (12), and negative electrode plate through slots (13) to facilitate the passage of positive electrode plate (5), diaphragm (6), and negative electrode plate (7). The upper and lower surfaces of the positive electrode plate through slots (11), diaphragm through slots (12), and negative electrode plate through slots (13) are provided with air outlets (111) that communicate with the interior of the cavity structure of the dust collection box (1). The cover (2) is installed on the top of the dust collection box (1), the support platform (3) is installed on one side of the dust collection box (1), the induced draft fan (4) is installed on the support platform (3), the air outlet of the induced draft fan (4) communicates with the interior of the dust collection box (1), and the filter layer (10) is installed at the air outlet of the induced draft fan (4).

2. The lithium battery winding dust blowing device as described in claim 1, characterized in that: A sealing ring is provided at the connection between the cover (2) and the dust collection box (1).

3. A lithium battery winding dust blowing device as described in claim 1 or 2, characterized in that: The positive electrode through-slot (11), the diaphragm through-slot (12), and the negative electrode through-slot (13) are configured as rectangular structures. The distance between the upper and lower surfaces of the positive electrode through-slot (11), the diaphragm through-slot (12), and the negative electrode through-slot (13) is greater than the thickness of the positive electrode (5), the diaphragm (6), and the negative electrode (7).

4. A lithium battery winding dust blowing device as described in claim 1 or 2, characterized in that: The air outlet (111) is evenly provided in multiple locations.

Images