A flexible battery membrane sheet flattening device

Abstract

The utility model provides a kind of flexible battery membrane piece flattening device, including flattening platform, the lower four corners of the flattening platform are fixedly installed with supporting leg, its outside is respectively fixedly installed with negative pressure air pump and air blowing pump, the bottom of flattening groove being set on flattening platform is provided with air hole, sliding column being installed on flattening platform is slidably equipped with slide, the above of slide is installed with handle, and its below is installed and is provided with down pressure flattening convex;Cavity being set in the inside of flattening platform is installed with heating frame, heating frame is installed and is provided with heating electric wire;The utility model uses the composite technology of "negative pressure pre-fixing+sliding plate pressure+hot air fine adjustment", solves positioning problem, improves flattening precision;With "preliminary pressure+hot air flexible flattening" instead of hard pressure, avoid damage, effectively eliminate wrinkle.

Description

Technical Field

[0001] This utility model belongs to the field of membrane flattening technology, and in particular relates to a flexible battery membrane flattening device. Background Technology

[0002] With the rapid development of flexible electronics technology, flexible batteries, due to their advantages of being thin, flexible, and adaptable to complex scenarios, are increasingly widely used in wearable devices, flexible displays, and medical implants. The flatness of the core components of flexible batteries—the flexible battery films (such as electrodes, separators, and electromagnetic functional films)—directly determines the battery's energy density, cycle life, and safety: film wrinkles can lead to electrode alignment deviations and uneven electrolyte wetting, which can cause internal short circuits in severe cases; indentations or scratches in the coating area can reduce conductivity and affect the battery's output stability.

[0003] Currently, there are many technical limitations in the industry regarding flattening devices for sheet-like flexible battery films: Traditional hot-press flattening devices apply pressure and heat directly through rigid plates. Although this can eliminate some wrinkles, the hard contact between the plate and the diaphragm can easily cause indentations. This is especially true for electromagnetic diaphragms that are sensitive to coatings, which can easily cause the coating to peel off or the substrate to stretch and deform. Furthermore, the flatness of the plate is required to be extremely high, and even a small processing error can lead to incomplete flattening in some areas.

[0004] Some devices only use negative pressure adsorption to fix the membrane, lacking the ability to actively flatten it. They are powerless against the tiny wrinkles caused by stress release in the substrate, requiring manual stretching, which is inefficient and prone to secondary damage.

[0005] Therefore, it is essential to invent a flexible battery film flattening device. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a flexible battery film flattening device, comprising a flattening platform, support legs, a negative pressure air pump, an air blowing pump, a flattening groove, air holes, a sliding column, a sliding plate, a handle, a pressing flattening protrusion, a cavity, a heating frame, and heating wires. The support legs are fixedly installed at the four lower corners of the flattening platform, and the negative pressure air pump and the air blowing pump are fixedly installed on their outer sides respectively. The flattening groove on the flattening platform has air holes at its bottom. The sliding plate is slidably mounted on the sliding column on the flattening platform, and the handle is installed above the sliding plate, with the pressing flattening protrusion installed below it. The heating frame is installed in the cavity inside the flattening platform, and the heating wires are installed on the heating frame.

[0007] Preferably, the negative pressure air pump and the blowing air pump, which are arranged opposite each other on the outer side of the flattening platform, are connected to the cavity inside the platform through a solenoid valve and a pipe, and the cavity is connected to an air hole.

[0008] Preferably, a rectangular array of several air holes is arranged at the bottom of the flattening groove, and the flattening groove is located directly below the pressing flattening protrusion, with the two matching each other.

[0009] Preferably, the slide plate mounted with the pressing and flattening protrusion has through holes at its four corners that slide with the sliding columns, and the four sliding columns are distributed at the four corners of the outer side of the flattening groove.

[0010] Preferably, the heating frame installed on one side of the cavity is a rectangular frame structure, located below several air holes. The heating frame and heating wire are close to the air pump and away from the negative pressure air pump.

[0011] Preferably, the airflow generated by the air pump passes through the heating wire installed on the heating frame, then flows through the cavity and is discharged outward through the air hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention fundamentally solves the positioning problem of flattening sheet membranes through a composite process logic of "negative pressure pre-fixation + precise pressure application by the sliding plate + fine adjustment by hot air flow": the negative pressure air pump quickly adsorbs the membrane through a rectangular array of air holes, making the membrane tightly fit the bottom of the flattening groove and avoiding displacement during placement; the gap fit structure between the sliding column and the sliding plate ensures precise alignment between the pressing flattening protrusion and the flattening groove, with the pressure deviation controlled within 0.1mm; subsequently, the hot air flow acts evenly on the membrane along the cavity, achieving precise smoothing of tiny wrinkles, and the overall flattening accuracy is improved by more than 40% compared with traditional devices.

[0013] This invention abandons the traditional single flattening method of hard pressing and adopts a combined strategy of "initial pressure constraint + hot air flexible flattening": the downward flattening convexity only eliminates large loose wrinkles and avoids excessive pressure; the coordinated design of heating wire and air pump makes the airflow carry uniform heat to act on the diaphragm, and the flexible airflow can penetrate into the coating gaps, naturally eliminating wrinkles in the softened state of the substrate, without the risk of indentation or scratches. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a partial cross-sectional structural diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the main structure of this utility model.

[0017] In the picture: 1. Flattening platform, 2. Support leg, 3. Negative pressure air pump, 4. Air pump, 5. Flattening groove, 6. Air hole, 7. Sliding column, 8. Slide plate, 9. Handle, 10. Downward flattening protrusion, 11. Cavity, 12. Heating frame, 13. Heating wire. Detailed Implementation

[0018] 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.

[0019] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0020] As attached Figure 1 To be continued Figure 3 As shown: This utility model provides a flexible battery film flattening device, including a flattening platform 1, support legs 2, a negative pressure air pump 3, an air blowing pump 4, a flattening groove 5, air holes 6, a sliding column 7, a sliding plate 8, a handle 9, a pressing flattening protrusion 10, a cavity 11, a heating frame 12, and a heating wire 13. The support legs 2 are fixedly installed at the four lower corners of the flattening platform 1, and the negative pressure air pump 3 and the air blowing pump 4 are fixedly installed on their outer sides respectively. The flattening groove 5 provided on the flattening platform 1 has air holes 6 at the bottom. The sliding plate 8 is slidably mounted on the sliding column 7 installed on the flattening platform 1. The handle 9 is installed above the sliding plate 8, and the pressing flattening protrusion 10 is installed below it. The heating frame 12 is installed in the cavity 11 provided inside the flattening platform 1, and the heating wire 13 is installed on the heating frame 12.

[0021] Furthermore, the negative pressure air pump 3 and the blowing air pump 4, which are arranged opposite each other on the outer side of the flattening platform 1, are connected to the cavity 11 inside the flattening platform 1 through DN15-DN20 PVC pipes (the outer wall of the pipe is wrapped with thermal insulation cotton) and solenoid valves (the connection between the pipe and the flattening platform 1 is sealed with a sealing ring to prevent air leakage). The top of the cavity 11 is connected to the air hole 6 through a processing technology, forming a complete air circuit system of "air pump-solenoid valve-pipe-cavity-air hole". By switching the solenoid valve on and off, the negative pressure air pump 3 and the blowing air pump 4 can selectively supply / extract air to the cavity 11.

[0022] Furthermore, several of the air holes 6 are processed by laser drilling and arranged in a rectangular array of 5×8-10×15 at the bottom of the flattening groove 5 to ensure that the airflow acts uniformly on the membrane. The planar dimensions of the flattening groove 5 are 5-10mm larger than the flexible battery membrane to be processed. It is located directly below the pressing flattening protrusion 10. The planar dimensions of the pressing flattening protrusion 10 are in clearance fit with the inner cavity dimensions of the flattening groove 5 (0.5-1mm clearance on one side), and the parallelism error between the lower surface of the pressing flattening protrusion 10 and the bottom of the flattening groove 5 is ≤0.1mm, ensuring that the membrane is subjected to uniform force when pressure is applied.

[0023] Furthermore, the four corners of the sliding plate 8, which is installed with the lower flattening protrusion 10, are drilled with through holes. The diameter of the through holes is 0.02-0.05mm larger than the diameter of the sliding column 7, forming a clearance sliding fit (the mating surfaces are coated with high-temperature resistant grease to reduce frictional resistance). The four sliding columns 7 are respectively vertically distributed at the four corners of the outer side of the flattening groove 5. The top of their respective sliding columns is fixed with a limit block by a nut (to prevent the sliding plate 8 from slipping off). The perpendicularity error between the axis of the sliding column 7 and the bottom of the flattening groove 5 is ≤0.05mm, ensuring that the sliding plate 8 drives the lower flattening protrusion 10 to rise and fall vertically, avoiding tilted pressure.

[0024] Furthermore, a heating frame 12 is bolted to the side of the cavity 11 near the air pump 4 (i.e., the side away from the negative pressure air pump 3). The heating frame 12 is a rectangular frame structure, and its outer contour dimensions match the cross-sectional dimensions of the cavity 11. The heating frame 12 is located directly below several of the air holes 6. Heating wires 13 (0.5-1mm in diameter, with a winding density of 3-5 turns per centimeter) are evenly wound on its frame. The two ends of the heating wires 13 are connected to a temperature controller (temperature control range 50-120℃) outside the flattening platform 1 through high-temperature resistant wires to achieve precise control of the airflow heating temperature.

[0025] Furthermore, the airflow generated after the air pump 4 is started is transported to the cavity 11 through the pipeline. It first flows through the heating wire 13 installed on the heating frame 12 (and is heated to the set temperature) to form a hot airflow. The hot airflow diffuses evenly through the gap between the heating frame 12 and the inner wall of the cavity 11, and then flows through the entire cavity 11 space. Finally, it is discharged vertically upward through the air hole 6 at the bottom of the flattening groove 5, and acts on the surface of the flexible battery film placed in the flattening groove 5 to achieve hot airflow-assisted flattening.

[0026] The working principle is as follows: First, the flexible battery film to be flattened is placed in the flattening groove 5 of the flattening platform 1, so that the film initially adheres to the bottom of the groove.

[0027] Next, the negative pressure air pump 3 is started, and the air path is switched through the solenoid valve to connect the cavity 11 with the negative pressure air pump 3. At this time, the air hole 6 generates negative pressure with the cavity 11, which firmly adsorbs the diaphragm to the bottom of the flattening groove 5, realizing the precise positioning and fixation of the diaphragm and avoiding displacement in subsequent operations.

[0028] Subsequently, the operator holds the handle 9 and pushes the slide plate 8 down along the slide column 7, causing the pressing and flattening protrusion 10 below the slide plate 8 to descend synchronously until the pressing and flattening protrusion 10 gently presses against the surface of the diaphragm. The moderate pressure initially eliminates the large loose wrinkles on the diaphragm, laying the foundation for subsequent fine flattening.

[0029] At this time, the negative pressure air pump 3 is turned off, and the air path is switched to the blowing air pump 4 through the solenoid valve. At the same time, the heating wire 13 on the heating frame 12 is started to raise the temperature of the heating frame 12 and the surrounding area. The airflow generated by the blowing air pump 4 is heated when it flows through the heating wire 13, forming a hot airflow.

[0030] After the hot airflow diffuses evenly within the cavity 11, it acts vertically on the membrane surface through the air holes 6 at the bottom of the flattening groove 5. The heat softens the membrane substrate, while the flexible pressure of the airflow penetrates into the tiny folds of the membrane, causing the folds to naturally unfold and achieving fine flattening without damage.

[0031] After flattening, turn off the air pump 4 and heating wire 13, hold the handle 9 and lift the slide plate 8 upwards to drive the downward flattening protrusion 10 to detach from the film; then release the negative pressure state and you can take out the flattened flexible battery film.

[0032] 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 flexible battery film flattening device, characterized in that, The system includes a flattening platform (1), support legs (2), a negative pressure air pump (3), an air pump (4), a flattening groove (5), an air hole (6), a sliding column (7), a sliding plate (8), a handle (9), a pressing flattening protrusion (10), a cavity (11), a heating frame (12), and a heating wire (13). The support legs (2) are fixedly installed at the four lower corners of the flattening platform (1), and the negative pressure air pump (3) and the air pump (4) are fixedly installed on their outer sides respectively. The flattening groove (5) provided on the flattening platform (1) has the air hole (6) at the bottom. The sliding plate (8) is slidably mounted on the sliding column (7) installed on the flattening platform (1). The handle (9) is installed above the sliding plate (8), and the pressing flattening protrusion (10) is installed below it. The heating frame (12) is installed in the cavity (11) provided inside the flattening platform (1), and the heating wire (13) is installed on the heating frame (12).

2. The flexible battery film flattening device as described in claim 1, characterized in that: The negative pressure air pump (3) and the blowing air pump (4) arranged opposite to each other on the outside of the flattening platform (1) are connected to the cavity (11) arranged inside it through solenoid valves and pipes. The cavity (11) is connected to the air hole (6).

3. The flexible battery film flattening device as described in claim 2, characterized in that: A rectangular array of several of the air holes (6) is arranged at the bottom of the flattening groove (5), which is located directly below the pressing flattening protrusion (10), and the two are matched with each other.

4. The flexible battery film flattening device as described in claim 3, characterized in that: The sliding plate (8) installed with the pressing and flattening protrusion (10) has through holes at its four corners that slide with the sliding column (7) with a gap. The four sliding columns (7) are distributed at the four corners of the outer side of the flattening groove (5).

5. The flexible battery film flattening device as described in claim 4, characterized in that: The heating frame (12) installed on one side inside the cavity (11) is a rectangular frame structure, located on one side below several air holes (6). The heating frame (12) and the heating wire (13) are close to the air pump (4) and far away from the negative pressure air pump (3).

6. The flexible battery film flattening device as described in claim 5, characterized in that: The airflow generated by the air pump (4) passes through the heating wire (13) installed on the heating frame (12), then flows through the cavity (11) and is discharged outward through the air hole (6).

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