Battery separator unwinding device

Abstract

The utility model provides a kind of battery diaphragm unwinding device, including support frame, extension support plate, guide tensioning group, guide roller, raw material roller and front dust removal group, wherein: extension support plate is fixedly installed in the rear of support frame surface, and guide tensioning group is fixedly installed in the below of extension support plate front surface, and this guide roller is installed in the rear side above support frame surface;The raw material roller is installed in the front side above support frame surface, and front dust removal group is fixedly installed in the front side below support frame surface;The utility model is provided with guide tensioning group and guide roller, can guarantee the tension of battery diaphragm before unwinding, can eliminate the static electricity accumulated in its inside before unwinding, and there is no dust on diaphragm before use.

Description

Technical Field

[0001] This utility model relates to the field of battery separator technology, and in particular to a battery separator unwinding device. Background Technology

[0002] Battery separator unwinding equipment is a key piece of equipment in lithium-ion battery production, primarily used to unwind and smoothly transport rolled battery separator substrates to subsequent processes. This equipment, through a precisely designed unwinding mechanism, tension control system, and guide roller assembly, ensures that the ultra-thin separator maintains constant tension and flatness during transport. It is also equipped with an electrostatic elimination and dust removal system to prevent dust adsorption or wrinkling of the separator. Its core function is to achieve a seamless transition of the separator from raw material rolls to coating, slitting, and other processing stages, directly impacting the yield and safety of battery production. It is a crucial process equipment for ensuring the uniformity and integrity of battery separators. However, existing battery separator unwinding equipment still suffers from problems such as not being able to guarantee the tension of the battery separator before unwinding, not being able to eliminate accumulated static electricity before unwinding, and still having dust on the separator before use.

[0003] Therefore, it is essential to invent a battery separator unwinding device. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a battery separator unwinding device, which solves the problems of existing battery separator unwinding devices still failing to guarantee the tension of the battery separator before unwinding, failing to eliminate the static electricity accumulated inside before unwinding, and still having dust on the separator before use. A battery separator unwinding device includes a support frame, an extension support plate, a guide tensioning assembly, a guide roller, a raw material roller, and a pre-dust removal assembly, wherein: the extension support plate is fixedly installed behind the surface of the support frame, and the guide tensioning assembly is fixedly installed below the front surface of the extension support plate; the guide roller is installed on the rear side above the surface of the support frame; the raw material roller is installed on the front side above the surface of the support frame, and the pre-dust removal assembly is fixedly installed on the front side below the surface of the support frame.

[0005] The guide tensioning assembly includes a power push rod, a movable frame, a force-applying roller, a mounting frame, and a force-receiving roller. The power push rod is fixedly mounted below the front surface of the extension support plate, and the movable frame is fixedly mounted on top of the power push rod. The force-applying roller is rotatably mounted inside the movable frame. The mounting frame is fixedly mounted below the front surface of the extension support plate and is located above the power push rod. The force-receiving roller is rotatably mounted inside the mounting frame.

[0006] The guide roller includes a rotating shaft, a discharge substrate, a protective contact surface, and a positioning plate. The rotating shaft is rotatably mounted on the rear side above the surface of the support frame, and the discharge substrate is fixedly mounted on the surface of the rotating shaft. The protective contact surface is fixedly mounted on the surface of the discharge substrate, and the positioning plate is fixedly mounted on the outer side of the discharge substrate.

[0007] The force-applying roller and the force-receiving roller inside the guide tensioning assembly are two horizontal stainless steel metal rollers that cannot rotate actively. The outer side of the force-applying roller and the force-receiving roller is covered with a layer of silicone pad with anti-slip pattern. The force-applying roller can be pushed close to the force-receiving roller by a power push rod. The continuously moving battery separator is sandwiched between the force-applying roller and the force-receiving roller and is passively rotated.

[0008] The guide roller as a whole can rotate via a motor behind the rotating shaft, and the discharge substrate adopts a set of iron metal structures, and conducts static electricity to the ground through contact pins. The discharge substrate can always contact the pins during rotation; the protective contact surface adopts an indium tin oxide sheet, and the surface of the protective contact surface is smooth without obvious seams or protrusions. The protective contact surface is in direct contact with the battery separator.

[0009] Compared with the prior art, the present invention has the following beneficial effects: The guide tensioning assembly of this utility model uses a power push rod to drive a moving frame, causing the force roller to press against the force receiving roller. The friction of the anti-slip silicone pads on the surfaces of the two rollers provides a constant tension for the battery separator, preventing the separator from becoming loose or too tight during unwinding. By reducing sliding friction, it assists in the static electricity discharge effect of the guide roller. Finally, in conjunction with the pre-dust removal assembly and the raw material roller, it achieves stable separator transport and static electricity control.

[0010] The guide roller of this utility model is designed to rotate the discharge substrate by rotating the shaft, so that the protective contact surface keeps in contact with the battery separator, and conducts the static electricity on the surface of the separator to the grounded discharge substrate to eliminate static electricity; at the same time, the positioning plate fixes the position and provides stable guidance for the separator during the transmission process. Its smooth surface avoids damage to the separator, and works in conjunction with the guide tensioning group to ensure that the separator is released from the raw material roller and released outward after static electricity elimination. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is an enlarged view of section A of this utility model.

[0013] Figure 3 This is an enlarged view of section B of this utility model.

[0014] In the picture: Support frame 1, extension support plate 2, guide tensioning group 3, power push rod 31, moving frame 32, force roller 33, mounting frame 34, force receiving roller 35, guide roller 4, rotating shaft 41, discharge substrate 42, protective contact surface 43, positioning plate 44, raw material roller 5, pre-dust removal group 6. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0016] As attached Figure 1 To be continued Figure 3 As shown.

[0017] This utility model provides a battery separator unwinding device, including a support frame 1, an extension support plate 2, a guide tensioning group 3, a guide roller 4, a raw material roller 5, and a pre-dust removal group 6, wherein: the extension support plate 2 is fixedly installed on the rear side of the surface of the support frame 1, and the guide tensioning group 3 is fixedly installed below the front surface of the extension support plate 2, and the guide roller 4 is installed on the rear side above the surface of the support frame 1; the raw material roller 5 is installed on the front side above the surface of the support frame 1, and the pre-dust removal group 6 is fixedly installed on the front side below the surface of the support frame 1.

[0018] The guide tensioning assembly 3 includes a power push rod 31, a movable frame 32, a force-applying roller 33, a mounting frame 34, and a force-receiving roller 35. The power push rod 31 is fixedly installed below the front surface of the extension support plate 2, and the movable frame 32 is fixedly installed on top of the power push rod 31. The force-applying roller 33 is rotatably installed inside the movable frame 32. The mounting frame 34 is fixedly installed below the front surface of the extension support plate 2 and is located above the power push rod 31. The force-receiving roller 35 is rotatably installed inside the mounting frame 34.

[0019] The guide roller 4 includes a rotating shaft 41, a discharge substrate 42, a protective contact surface 43, and a positioning plate 44. The rotating shaft 41 is rotatably mounted on the rear side above the surface of the support frame 1, and the discharge substrate 42 is fixedly mounted on the surface of the rotating shaft 41. The protective contact surface 43 is fixedly mounted on the surface of the discharge substrate 42, and the positioning plate 44 is fixedly mounted on the outer side of the discharge substrate 42.

[0020] The force-applying roller 33 and the force-receiving roller 35 inside the guide tensioning assembly 3 are two horizontal stainless steel metal rollers, and the force-applying roller 33 and the force-receiving roller 35 cannot rotate actively. The outer side of the force-applying roller 33 and the force-receiving roller 35 is wrapped with a layer of silicone pad with anti-slip pattern. The force-applying roller 33 can be pushed close to the force-receiving roller 35 by the power push rod 31. The continuously moving battery separator is sandwiched between the force-applying roller 33 and the force-receiving roller 35 and is passively rotated.

[0021] The guide roller 4 can rotate via a motor behind the rotating shaft 41, and the discharge substrate 42 adopts a set of iron metal structures and conducts static electricity to the ground through contact pins. The discharge substrate 42 can always contact the contact pins when rotating. The protective contact surface 43 is made of an indium tin oxide sheet, and the surface of the protective contact surface 43 is smooth without obvious seams or protrusions. The protective contact surface 43 is in direct contact with the battery separator.

[0022] This battery separator unwinding device achieves efficient and stable separator transport and processing through a modular design. First, the guide tensioning group 3 provides constant tension to the separator through the coordinated action of the force-applying roller 33 and the force-receiving roller 35, ensuring smooth transport. The separator undergoes surface cleaning via the pre-dust removal group 6, and static electricity is eliminated by the conductive guide roller 4 before finally being unwound. Each functional module achieves precise positioning and coordinated operation through the support frame 1 and the extended support plate 2.

[0023] The core innovation of this device lies in integrating three major functions: tension control, dust removal, and static electricity elimination. The guide tensioning assembly 3 adopts a silicone-coated roller design to achieve damage-free tension control; the guide roller 4 innovatively combines an indium tin oxide protective contact surface 43 with an iron discharge substrate 42, ensuring static electricity elimination while avoiding damage to the diaphragm surface; the optimized layout of each component forms a continuous operation process, significantly improving the production quality and efficiency of battery diaphragms.

[0024] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A battery separator unwinding device, characterized in that: It includes a support frame (1), an extension support plate (2), a guide tensioning group (3), a guide roller (4), a raw material roller (5), and a pre-dust removal group (6), wherein: the extension support plate (2) is fixedly installed on the rear side of the surface of the support frame (1), and the guide tensioning group (3) is fixedly installed below the front surface of the extension support plate (2), and the guide roller (4) is installed on the rear side above the surface of the support frame (1); the raw material roller (5) is installed on the front side above the surface of the support frame (1), and the pre-dust removal group (6) is fixedly installed on the front side below the surface of the support frame (1).

2. The battery separator unwinding device as described in claim 1, characterized in that: The guide tensioning assembly (3) includes a power push rod (31), a moving frame (32), a force-applying roller (33), a mounting frame (34), and a force-receiving roller (35). The power push rod (31) is fixedly installed below the front surface of the extension support plate (2), and the moving frame (32) is fixedly installed on top of the power push rod (31). The force-applying roller (33) is rotatably installed inside the moving frame (32). The mounting frame (34) is fixedly installed below the front surface of the extension support plate (2), and the mounting frame (34) is located above the power push rod (31). The force-receiving roller (35) is rotatably installed inside the mounting frame (34).

3. The battery separator unwinding device as described in claim 1, characterized in that: The guide roller (4) includes a rotating shaft (41), a discharge substrate (42), a protective contact surface (43), and a positioning plate (44). The rotating shaft (41) is rotatably mounted on the rear side above the surface of the support frame (1), and the discharge substrate (42) is fixedly mounted on the surface of the rotating shaft (41). The protective contact surface (43) is fixedly mounted on the surface of the discharge substrate (42), and the positioning plate (44) is fixedly mounted on the outside of the discharge substrate (42).

4. The battery separator unwinding device as described in claim 2, characterized in that: The force roller (33) and the force receiving roller (35) inside the guide tensioning assembly (3) are two horizontal stainless steel metal rollers, and the force roller (33) and the force receiving roller (35) cannot rotate actively. The outer side of the force roller (33) and the force receiving roller (35) is wrapped with a silicone pad with anti-slip pattern. The force roller (33) can be pushed close to the force receiving roller (35) by the power push rod (31). The continuously moving battery separator is sandwiched between the force roller (33) and the force receiving roller (35) and is passively rotated.

5. The battery separator unwinding device as described in claim 3, characterized in that: The guide roller (4) can rotate via a motor behind the rotating shaft (41), and the discharge substrate (42) is made of a set of iron metal structures and conducts static electricity to the ground through contact pins. The discharge substrate (42) can always contact the pins during rotation. The protective contact surface (43) is made of an indium tin oxide sheet, and the surface of the protective contact surface (43) is smooth without obvious seams or protrusions. The protective contact surface (43) is in direct contact with the battery separator.

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