A lithium battery separator double-pulling device

Abstract

The utility model discloses a lithium battery diaphragm double pull device relates to lithium battery diaphragm processing technical field, including operation platform and heating assembly, operation platform lower surface left end is installed with left support board, heating assembly sets up operation platform upper surface, and heating assembly includes fixed plate, hollow heating roller, support cross board, hot -water heat preservation box, water supply pipe, drain pipe, sealing plug, water pump, multichannel water pipe and multichannel outlet pipe, fixed plate sets up operation platform upper surface left end, and fixed plate inboard upper end is installed with hollow heating roller, and hollow heating roller is provided with two groups, left support board right surface lower extreme is installed with support cross board. The lithium battery diaphragm double pull device, through heating assembly makes the device can carry out even heating to diaphragm, improves the tensile quality and efficiency to diaphragm, and can circulate use to water, reduces the waste of water resources, through the stretching component makes the device can realize the stable bidirectional stretching to diaphragm.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery separator processing technology, specifically a lithium battery separator bi-stretching device. Background Technology

[0002] The lithium-ion battery separator is one of the key components inside a lithium-ion battery, located between the positive and negative electrodes. Its main function is to isolate the positive and negative electrodes, preventing direct contact that could lead to a short circuit, while allowing lithium ions to pass freely during charging and discharging, ensuring the normal operation of the battery. The processing of lithium-ion battery separators requires a biaxial stretching device. This device is specifically designed for bidirectional stretching of separators, and its core function is to improve the physicochemical properties of the separator through longitudinal and transverse stretching processes, ensuring it meets the high-performance requirements of lithium-ion batteries. However, current biaxial stretching devices for lithium-ion battery separators still have the following shortcomings:

[0003] For example, patent document CN222673239U discloses a stretching device for preparing lithium battery separators. This stretching device uses stretching rollers to repeatedly stretch the lithium battery separator. However, such operations easily lead to breakage of the separator, resulting in unstable product quality, increased scrap rate, reduced production efficiency, and consequently, reduced device usability. Furthermore, it is not conducive to uniform heating of the separator, hindering stable stretching and resulting in low stretching efficiency and quality. Utility Model Content

[0004] The purpose of this invention is to provide a bi-stretching device for lithium battery separators to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery separator double-stretching device, comprising an operating table and a heating assembly. A left support plate is installed on the left end of the lower surface of the operating table. The heating assembly is disposed on the upper surface of the operating table and includes a fixed plate, a hollow heating roller, a support cross plate, a hot water insulation tank, a water supply pipe, a drain pipe, a sealing plug, a water pump, a multi-port water supply pipe, and a multi-port water outlet pipe. The fixed plate is disposed on the left end of the upper surface of the operating table, and a hollow heating roller is installed on the upper inner side of the fixed plate. Two sets of hollow heating rollers are provided. A support cross plate is installed on the lower right surface of the left support plate, and a hot water insulation tank is disposed on the upper surface of the support cross plate. A water supply pipe is installed on the upper right side of the hot water insulation tank.

[0006] Furthermore, a drain pipe is provided at the lower right end of the hot water insulation box, and both the drain pipe and the water supply pipe are fitted with sealing plugs inside.

[0007] Furthermore, a water pump is installed at the rear of the hot water insulation box, and a multi-port water pipe is connected to the rear end of the water pump.

[0008] Furthermore, the upper end of the multi-port water supply pipe is connected to the rear side of the hollow heating roller, and the front side of the hollow heating roller is connected to a multi-port water outlet pipe, the lower end of which is connected to the lower front end of the hot water insulation box.

[0009] Furthermore, a right support plate is installed on the right end of the lower surface of the operating table, and a tensioning component for double-pull is provided on the right end of the upper surface of the operating table.

[0010] Furthermore, the stretching assembly includes a fixed upright plate, a fixed top plate, a hydraulic push rod, a fixed frame, and a stretching auxiliary roller. The fixed upright plate is located on the front and rear sides of the right end of the upper surface of the operating table. The fixed top plate is installed on the top of the fixed upright plate, and a hydraulic push rod is provided on the upper surface of the fixed top plate. A fixed frame is installed at the bottom of the hydraulic push rod, and a stretching auxiliary roller is rotatably connected to the inner side of the fixed frame.

[0011] Furthermore, the stretching assembly also includes an auxiliary limiting roller, a support frame, an electric push rod, a movable frame, an electric telescopic rod, and a limiting plate. The auxiliary limiting roller is installed on the right side of the fixed upright plate and the right end of the upper surface of the operating table. A support frame is provided on the right side of the outer side of the fixed upright plate, and an electric push rod is installed on the outer surface of the support frame. A movable frame is provided on the inner end of the electric push rod, and an electric telescopic rod is installed on the right side of the movable frame. A limiting plate is provided on the left end of the electric telescopic rod.

[0012] Furthermore, a support groove is installed on the left end of the upper surface of the operating table, and a diaphragm roller is provided on the inner side of the upper end of the support groove.

[0013] This utility model provides a bi-stretching device for lithium battery separators, which has the following beneficial effects:

[0014] 1. This utility model incorporates a heating assembly, which includes a fixed plate, a hollow heating roller, a supporting cross plate, a hot water insulation tank, a water supply pipe, a drain pipe, a sealing plug, a water pump, a multi-port water supply pipe, and a multi-port water outlet pipe. In use, hot water is supplied to the hot water insulation tank through the water supply pipe. The water pump is then activated to draw water from the tank and deliver it through the multi-port water supply pipe to the hollow heating roller. The water in the hollow heating roller is discharged back into the hot water insulation tank through the multi-port water outlet pipe, maintaining hot water circulation within the roller. After the diaphragm is pulled out from the diaphragm roller, it passes between two sets of hollow heating rollers and is uniformly heated by them. After cooling, the water is discharged through the drain pipe and recycled. This allows the device to uniformly heat the diaphragm, improving the stretching quality and efficiency, and also enables water recycling, reducing water waste.

[0015] 2. This utility model incorporates a stretching assembly, which includes a fixed upright plate, a fixed top plate, a hydraulic push rod, a fixed frame, and a stretching auxiliary roller. The assembly also includes an auxiliary limiting roller, a support frame, an electric push rod, a movable frame, an electric telescopic rod, and a limiting plate. In use, the assembly passes over the uppermost auxiliary limiting roller and then pulls down past the lowermost auxiliary limiting roller. Connecting to the winding mechanism, the hydraulic push rod is activated, causing it to move the stretching auxiliary roller up and down via the fixed frame, facilitating longitudinal stretching of the diaphragm. The two sets of auxiliary limiting rollers keep one section of the diaphragm vertical. The electric push rod is then activated, causing the movable frame to move inward until it reaches the outside of the vertical diaphragm. The electric telescopic rod is then activated, causing the limiting plate to move to the right, fixing the diaphragm between the limiting plate and the movable frame. Finally, the electric push rod is activated again, causing the diaphragm to move outward, facilitating lateral stretching. This allows the device to achieve stable bidirectional stretching of the diaphragm. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a lithium battery separator bi-stretching device according to the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the heating component of a lithium battery separator bi-stretching device according to the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the tensioning component of a lithium battery separator double-stretching device according to the present invention;

[0019] Figure 4 This is a three-dimensional structural diagram of the support frame of a lithium battery separator double-stretching device according to the present invention.

[0020] In the diagram: 1. Operating platform; 2. Left support plate; 3. Heating assembly; 301. Fixed plate; 302. Hollow heating roller; 303. Supporting horizontal plate; 304. Hot water insulation tank; 305. Water supply pipe; 306. Drainage pipe; 307. Sealing plug; 308. Water pump; 309. Multi-port water supply pipe; 310. Multi-port water outlet pipe; 4. Right support plate; 5. Tensioning assembly; 501. Fixed vertical plate; 502. Fixed top plate; 503. Hydraulic push rod; 504. Fixed frame; 505. Tensioning auxiliary roller; 506. Auxiliary limiting roller; 507. Support frame; 508. Electric push rod; 509. Movable frame; 510. Electric telescopic rod; 511. Limiting plate; 6. Support groove; 7. Diaphragm roller. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] like Figures 1 to 4 As shown, a lithium battery separator double-stretching device includes an operating platform 1 and a heating assembly 3. A left support plate 2 is installed on the left end of the lower surface of the operating platform 1. The heating assembly 3 is disposed on the upper surface of the operating platform 1 and includes a fixed plate 301, a hollow heating roller 302, a support cross plate 303, a hot water insulation tank 304, a water supply pipe 305, a drain pipe 306, a sealing plug 307, a water pump 308, a multi-port water supply pipe 309, and a multi-port water outlet pipe 310. The fixed plate 301 is disposed on the left end of the upper surface of the operating platform 1, and a hollow heating roller 302 is installed on the upper inner side of the fixed plate 301. Two sets of hollow heating rollers 302 are provided. A heating roller 302 is installed on the lower right surface of the left support plate 2. A support plate 303 is provided, and a hot water insulation tank 304 is provided on the upper surface of the support plate 303. A water supply pipe 305 is installed at the upper right end of the hot water insulation tank 304, and a drain pipe 306 is provided at the lower right end of the hot water insulation tank 304. Both the drain pipe 306 and the water supply pipe 305 are fitted with sealing plugs 307. A water pump 308 is installed at the rear of the hot water insulation tank 304, and a multi-port water supply pipe 309 is connected to the rear end of the water pump 308. The upper end of the multi-port water supply pipe 309 is connected to the rear side of the hollow heating roller 302, and a multi-port water outlet pipe 310 is connected to the front side of the hollow heating roller 302. The lower end of the multi-port water outlet pipe 310 is connected to the lower front end of the hot water insulation tank 304.

[0023] The specific operation is as follows: When in use, hot water is supplied to the hot water insulation tank 304 through the water supply pipe 305. The water pump 308 is started, which draws water out of the hot water insulation tank 304 and delivers it to the hollow heating roller 302 through the multi-port water supply pipe 309. The water in the hollow heating roller 302 can be discharged back to the hot water insulation tank 304 through the multi-port water outlet pipe 310, keeping the hot water circulating in the hollow heating roller 302. After the diaphragm is pulled out from the diaphragm roller 7, it passes between the two sets of hollow heating rollers 302 and is uniformly heated by the hollow heating roller 302. After the water cools down, it can be discharged through the drain pipe 306 and recycled.

[0024] Please refer to Figure 1 , Figure 3 and Figure 4A right support plate 4 is installed on the right end of the lower surface of the operating table 1, and a tensioning assembly 5 for double-pull is provided on the right end of the upper surface of the operating table 1. The tensioning assembly 5 includes a fixed upright plate 501, a fixed top plate 502, a hydraulic push rod 503, a fixed frame 504, and a tensioning auxiliary roller 505. The fixed upright plate 501 is located on the front and rear sides of the right end of the upper surface of the operating table 1. The fixed top plate 502 is installed on the top of the fixed upright plate 501, and the hydraulic push rod 503 is provided on the upper surface of the fixed top plate 502. The fixed frame 504 is installed at the bottom of the hydraulic push rod 503, and the tensioning auxiliary roller 505 is rotatably connected to the inner side of the fixed frame 504. The tensioning assembly 5 also includes an auxiliary limiting roller 5. 06. Support frame 507, electric push rod 508, movable frame 509, electric telescopic rod 510 and limiting plate 511, and auxiliary limiting rollers 506 are installed on the right side of the fixed plate 501 and the right end of the upper surface of the operating table 1. Support frame 507 is provided on the right side of the outer side of the fixed plate 501, and electric push rod 508 is installed on the outer surface of the support frame 507. Movable frame 509 is provided on the inner end of the electric push rod 508, and electric telescopic rod 510 is installed on the right side of the movable frame 509. Limiting plate 511 is provided on the left end of the electric telescopic rod 510. Support groove 6 is installed on the left end of the upper surface of the operating table 1, and diaphragm roller 7 is provided on the inner side of the upper end of the support groove 6.

[0025] The specific operation is as follows: During use, place the diaphragm roller 7 with the formed diaphragm inside the winding mechanism. The heated diaphragm passes over the stretching auxiliary roller 505, then over the upper auxiliary limiting roller 506, and is pulled down to pass under the lower auxiliary limiting roller 506. After connecting to the winding mechanism, activate the hydraulic push rod 503, which drives the stretching auxiliary roller 505 up and down through the fixed frame 504 to facilitate longitudinal stretching of the diaphragm. By limiting the position of two sets of auxiliary limiting rollers 506, one section of the diaphragm is kept in a vertical position. The electric push rod 508 is activated, which drives the movable frame 509 to move inward until the movable frame 509 moves to the outside of the vertical diaphragm. The electric telescopic rod 510 is activated, which drives the limiting plate 511 to move to the right. The diaphragm is fixed by the limiting plate 511 and the movable frame 509. Then the electric push rod 508 is activated to drive the diaphragm to move outward, so as to stretch the diaphragm laterally.

[0026] In summary, as Figures 1 to 4As shown, in use, the lithium battery separator double-stretching device first supplies hot water to the hot water insulation tank 304 through the water supply pipe 305. Then, the water pump 308 is started, drawing water from the hot water insulation tank 304 and conveying it through the multi-port water pipe 309 to the hollow heating roller 302. The water in the hollow heating roller 302 is discharged back into the hot water insulation tank 304 through the multi-port water outlet pipe 310, maintaining hot water circulation in the hollow heating roller 302. The separator roller 7, with the formed separator wound on it, is placed inside the device. After the separator is pulled out from the separator roller 7, it passes between the two sets of hollow heating rollers 302, where it is uniformly heated. After cooling, it is discharged through the drain pipe 306 and recycled. The heated separator then passes over the stretching auxiliary roller 505. Then, it passes over the upper auxiliary limiting roller 506 and pulls down past the lower auxiliary limiting roller 506. Connecting to the winding mechanism, the hydraulic push rod 503 is activated, causing it to move the stretching auxiliary roller 505 up and down via the fixed frame 504, facilitating longitudinal stretching of the diaphragm. The two sets of auxiliary limiting rollers 506 limit the diaphragm, ensuring one section is vertical. The electric push rod 508 is activated, causing the movable frame 509 to move inward until it reaches the outside of the vertical diaphragm. The electric telescopic rod 510 is activated, causing the limiting plate 511 to move to the right, fixing the diaphragm between the limiting plate 511 and the movable frame 509. The electric push rod 508 is then activated to move the diaphragm outward, facilitating lateral stretching of the diaphragm.

[0027] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A lithium battery separator biaxial stretching device, comprising an operating table (1) and a heating assembly (3), characterized in that: A left support plate (2) is installed on the left end of the lower surface of the operating table (1). The heating component (3) is set on the upper surface of the operating table (1), and the heating component (3) includes a fixed plate (301), a hollow heating roller (302), a support cross plate (303), a hot water insulation tank (304), a water supply pipe (305), a drain pipe (306), a sealing plug (307), a water pump (308), a multi-port water supply pipe (309), and a multi-port water outlet pipe (310). The fixing plate (301) is located on the left end of the upper surface of the operating table (1), and a hollow heating roller (302) is installed on the upper inner side of the fixing plate (301). Two sets of hollow heating rollers (302) are provided. A support plate (303) is installed on the lower right side of the left support plate (2), and a hot water insulation box (304) is provided on the upper surface of the support plate (303). A water supply pipe (305) is installed on the upper right side of the hot water insulation box (304).

2. The lithium battery separator bi-stretching device according to claim 1, characterized in that, The lower right side of the hot water insulation box (304) is provided with a drain pipe (306), and the drain pipe (306) and the water supply pipe (305) are both fitted with sealing plugs (307).

3. The lithium battery separator bi-stretching device according to claim 1, characterized in that, A water pump (308) is installed on the rear side of the hot water insulation box (304), and a multi-port water pipe (309) is connected to the rear end of the water pump (308).

4. The lithium battery separator bi-stretching device according to claim 1, characterized in that, The upper end of the multi-port water pipe (309) is connected to the rear side of the hollow heating roller (302), and the front side of the hollow heating roller (302) is connected to the multi-port water outlet pipe (310). The lower end of the multi-port water outlet pipe (310) is connected to the lower front side of the hot water insulation box (304).

5. A lithium battery separator bi-stretching device according to claim 1, characterized in that, A right support plate (4) is installed on the right end of the lower surface of the operating table (1), and a tensioning assembly (5) for double tensioning is provided on the right end of the upper surface of the operating table (1).

6. A lithium battery separator bi-stretching device according to claim 5, characterized in that, The stretching assembly (5) includes a fixed upright plate (501), a fixed top plate (502), a hydraulic push rod (503), a fixed frame (504), and a stretching auxiliary roller (505). The fixed upright plate (501) is located on the front and rear sides of the right end of the upper surface of the operating table (1). The fixed top plate (502) is installed on the top of the fixed upright plate (501), and a hydraulic push rod (503) is provided on the upper surface of the fixed top plate (502). A fixed frame (504) is installed at the bottom of the hydraulic push rod (503), and a stretching auxiliary roller (505) is rotatably connected to the inner side of the fixed frame (504).

7. A lithium battery separator bi-stretching device according to claim 6, characterized in that, The stretching assembly (5) also includes an auxiliary limiting roller (506), a support frame (507), an electric push rod (508), a movable frame (509), an electric telescopic rod (510), and a limiting plate (511). The auxiliary limiting roller (506) is installed on the right side of the fixed plate (501) and the right end of the upper surface of the operating table (1). The support frame (507) is provided on the right side of the outer side of the fixed plate (501), and the electric push rod (508) is installed on the outer surface of the support frame (507). The movable frame (509) is provided on the inner end of the electric push rod (508), and the electric telescopic rod (510) is installed on the right side of the movable frame (509). The limiting plate (511) is provided on the left end of the electric telescopic rod (510).

8. A lithium battery separator bi-stretching device according to claim 1, characterized in that, The upper surface of the operating table (1) is equipped with a support groove (6) on the left end, and a diaphragm roller (7) is provided on the inner side of the upper end of the support groove (6).

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