Edge folding mechanism and battery cell film coating equipment

Abstract

The utility model relates to the technical field of battery cell processing, and provides an edge folding mechanism and battery cell film wrapping equipment, the edge folding mechanism is used for folding an insulating film located on the side face of a battery cell when the battery cell is wrapped with a film, the edge folding mechanism comprises a rack, a positioning part and an edge folding part, the positioning part and the edge folding part are arranged on the rack, the positioning part comprises a bearing table used for bearing the battery cell, and the edge folding part is arranged on the rack. The adjusting unit is used for adjusting the position of the battery cell on the bearing table, the edge folding part is provided with an arc-shaped surface which can abut against the battery cell, and the arc-shaped surface can roll along the side face of the battery cell so as to fold the insulating film. According to the edge folding mechanism disclosed by the utility model, an insulating film can be flattened on the side surface of a battery cell through rolling of the arc-shaped surface, so that the flatness of the insulating film coated on the surface of a battery shell is ensured.

Description

Folding mechanism and battery cell coating equipment Technical Field

[0001] This utility model relates to the field of battery cell processing technology, and in particular to a folding mechanism. This utility model also relates to a battery cell coating device equipped with the aforementioned folding mechanism. Background Technology

[0002] With the continuous advancement of technology, the demand for new energy power batteries is increasing. After the battery is manufactured, an insulating film is usually wrapped around the surface of the battery casing to protect it from scratches and electrolyte corrosion. Currently, the wrapped insulating film usually protrudes from the sides of the battery. Therefore, it is necessary to fold the exposed insulating film on the sides of the battery to ensure that the exposed insulating film adheres to the sides of the battery.

[0003] In existing technologies, the folding mechanism typically uses a rubber-coated roller to fold the insulating film, and the center of the rubber-coated roller must extend beyond the edge of the insulating film. However, when folding the insulating film on the side of a thin battery, the center of the rubber-coated roller will touch the insulating film on the opposite side after extending beyond the edge of the insulating film, which will cause wrinkles in the insulating film on the opposite side. This is not conducive to ensuring the flatness of the insulating film covering the surface of the battery casing. Summary of the Invention

[0004] In view of this, the present invention aims to provide a folding mechanism to help ensure the flatness of the insulating film covering the surface of the battery casing.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A folding mechanism for folding an insulating film located on the side of a battery cell during battery cell coating, and includes a frame, a positioning part and a folding part disposed on the frame;

[0007] The positioning part includes a support platform for supporting the battery cell, and an adjustment unit for adjusting the position of the battery cell on the support platform;

[0008] The folded edge has an arcuate surface that can abut against the battery cell, and the arcuate surface can roll along the side of the battery cell to fold the insulating film.

[0009] Furthermore, the folded edge includes a first driving unit, a support member disposed on the first driving unit, and a rotating member disposed on the support member; the arc-shaped surface is formed on the rotating member, and the first driving unit can drive the support member to move so that the arc-shaped surface can roll along the side of the battery cell.

[0010] Furthermore, the rotating component includes a rotating shaft rotatably mounted on the support member, and an arc-shaped block fixed on the rotating shaft, wherein the arc-shaped surface is formed on the arc-shaped block.

[0011] Furthermore, the arc-shaped block is a rubber block.

[0012] Furthermore, the first drive unit includes a first slide rail and a second slide rail respectively disposed on both sides of the frame, a first slide table disposed on the first slide rail, a second slide table disposed on the second slide rail, and a first drive member for driving the first slide table and the second slide table to move.

[0013] Furthermore, the support member includes a first plate disposed on the first slide and a second plate disposed on the second slide; the rotating member is sandwiched between the first plate and the second plate.

[0014] Furthermore, the folded edge also includes a reset member, which is disposed between the support member and the rotating member to reset the position of the rotating member after the rotating member is disengaged from the side of the battery cell.

[0015] Furthermore, the reset element is a torsion spring, one end of which is connected to the rotating element, and the other end of which is connected to the support element.

[0016] Furthermore, the adjustment unit includes a second drive member disposed on the frame and a push rod disposed on the second drive member; the push rod is disposed on the power output end of the second drive member to adjust the position of the battery cell on the support platform under the drive of the second drive member.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] The folding mechanism described in this utility model, through the arrangement of the support platform in the positioning part, the adjustment unit, and the arc-shaped surface in the folding part, can adjust the position of the battery cell on the support platform under the action of the adjustment unit, ensuring the alignment accuracy between the battery cell and the folding part. At the same time, it makes the arc-shaped surface of the folding part closely fit the side of the battery cell, and smooths the insulating film on the side of the battery cell by rolling, thereby avoiding affecting the insulating film on the opposite side and ensuring the flatness of the insulating film.

[0019] Secondly, the folding section consists of a first driving unit, a support component, and a rotating component. The first driving unit precisely controls the movement of the support component, causing the arc-shaped surface on the rotating component to roll along the side of the battery cell. This achieves precise control of the folding process, ensuring consistent folding position and force of the insulating film, thus improving the accuracy and consistency of the folding. The rotating component consists of a rotating shaft and an arc-shaped block. The shaft design allows the arc-shaped block to rotate stably, enabling the arc-shaped surface on the block to roll along the side of the battery cell, keeping the insulating film adhered to the side of the battery cell flat.

[0020] Furthermore, the use of rubber to make the curved block provides good cushioning when the curved surface contacts the side of the battery cell, reducing wear on the insulating film on the side of the battery cell. At the same time, it also increases the friction between the curved surface and the side of the battery cell, preventing slippage and ensuring that the curved surface maintains stable contact with the side of the battery cell during rolling.

[0021] By placing the first and second slide rails on both sides of the frame to form a symmetrical structure, a double slide rail design is achieved. This reduces vibration during the movement of the first and second slide tables, thereby improving the overall stability and reliability of the mechanism. At the same time, driven by the first drive component, the first and second slide tables slide on the first and second slide rails respectively, ensuring that the first and second slide tables remain synchronized and stable during movement.

[0022] Furthermore, the first plate and the second plate are respectively set on the first slide and the second slide to form a symmetrical support structure, which can evenly distribute the load and reduce deformation or vibration caused by unilateral force. In addition, the rotating component is clamped between the first plate and the second plate. Through the fixation of the first plate and the second plate, the rigidity and stability of the overall structure are enhanced, ensuring that the rotating component remains stable during movement.

[0023] The reset mechanism automatically returns the rotating component to its initial position after it detaches from the side of the battery cell, reducing the need for manual intervention and increasing the automation level of the operation. The reset mechanism uses a torsion spring, which is simple in structure, easy to install, and has excellent elastic recovery capabilities. It can be precisely designed according to the range of motion and reset requirements of the rotating component, ensuring that the rotating component accurately resets to the preset position each time, avoiding positional deviations. The second drive mechanism precisely controls the movement of the push rod, enabling fine-tuning of the battery cell's position on the support platform and ensuring accurate cell positioning.

[0024] This utility model also proposes a battery cell coating equipment, wherein the battery cell coating equipment is provided with the folding mechanism described above.

[0025] The battery cell coating equipment described in this utility model has the same beneficial effects as the folding mechanism described above compared to the prior art, so it will not be described again here. Attached Figure Description

[0026] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0027] Figure 1 is a schematic diagram of the overall structure of the two folding mechanisms described in an embodiment of this utility model;

[0028] Figure 2 is an enlarged view of the structure shown at point A in Figure 1;

[0029] Figure 3 is a structural schematic diagram of the right-side folding mechanism according to an embodiment of the present invention;

[0030] Figure 4 is an enlarged view of the structure shown at point B in Figure 3.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Rack;

[0033] 2. Positioning unit; 21. Support platform; 22. Adjustment unit;

[0034] 221. Second driving component; 222. Push rod;

[0035] 3. Folded edge;

[0036] 31. First drive unit; 311. First slide rail; 312. Second slide rail; 313. First slide table; 314. Second slide table; 315. First drive component;

[0037] 32. Support component; 321. First plate; 322. Second plate;

[0038] 33. Rotating component; 331. Rotating shaft; 3311. Pin hole; 332. Arc-shaped block; 3321. Arc-shaped surface;

[0039] 34. Reset component;

[0040] 4. Battery cells. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0042] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0043] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] Taking the folding mechanism described in this utility model as an example, the directional terms used in the embodiments, such as "up," "down," "left," "right," "front," and "back," are defined based on the vertical direction (also known as the height direction), the horizontal direction (also known as the length direction), and the front-back direction (also known as the width direction) as shown in Figure 3.

[0045] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0046] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Embodiment 1

[0047] This embodiment relates to a folding mechanism, which helps to ensure the flatness of the insulating film covering the side of the battery cell.

[0048] In terms of overall structure, as shown in Figures 1 and 2, it includes a frame 1, a positioning part 2 and a folding part 3 disposed on the frame 1. The positioning part 2 includes a support platform 21 for supporting the battery cell 4, and an adjustment unit 22 for adjusting the position of the battery cell 4 on the support platform 21. Furthermore, the folding part 3 has an arcuate surface 3321 that can abut against the battery cell 4, and the arcuate surface 3321 can roll along the side of the battery cell 4 to fold the insulating film.

[0049] At this time, as set up as above, by setting up the support platform 21 in the positioning part 2, the adjustment unit 22 and the arc surface 3321 in the folding part 3, the position of the battery cell 4 on the support platform 21 can be adjusted under the action of the adjustment unit 22, ensuring the alignment accuracy of the battery cell 4 and the folding part 3. At the same time, the arc surface 3321 of the folding part 3 is tightly attached to the side of the battery cell 4, and the insulating film is smoothed on the side of the battery cell 4 by rolling, thereby avoiding affecting the insulating film on the opposite side and helping to ensure the flatness of the insulating film.

[0050] It should be noted that the folding mechanism in this embodiment is two symmetrically arranged on both sides of the battery cell 4. The structure of the folding mechanism on the left and the folding mechanism on the right are basically the same, and the two can be regarded as mirror images of each other. Therefore, in order to clearly describe the specific structure of the folding mechanism, this embodiment specifically describes the folding mechanism on the right as an example, and the relevant structure of the folding mechanism on the right is shown in Figure 3.

[0051] In this specific structure, the folded edge portions 3 of this embodiment are two arranged at intervals along the height direction of the frame 1, and the adjustment unit 22 is located between the two folded edge portions 3. In specific implementation, the battery cell 4 is placed on the support platform 21, and the position of the battery cell 4 is adjusted by the adjustment unit 22. Next, the upper folded edge portion 3 is driven to move downward, so that its arc-shaped surface 3321 rolls along the side of the battery cell 4 to apply the insulating film located on the top surface of the battery cell 4 to the side of the battery cell 4. Then, the upper folded edge portion 3 is driven to move upward. Subsequently, the lower folded edge portion 3 is driven to move upward, so that its arc-shaped surface 3321 rolls along the side of the battery cell 4 to apply the insulating film located on the bottom surface of the battery cell 4 to the side of the battery cell 4. Then, the lower folded edge portion 3 is driven to move downward.

[0052] Based on the above overall description, in this embodiment, as a preferred exemplary structure, as shown in Figures 1 and 2, the folded edge portion 3 includes a first driving unit 31, a support member 32 disposed on the first driving unit 31, and a rotating member 33 disposed on the support member 32. Furthermore, an arcuate surface 3321 is formed on the rotating member 33, and the first driving unit 31 can drive the support member 32 to move, so that the arcuate surface 3321 can roll along the side of the battery cell 4.

[0053] It is understandable that the folding part 3 is composed of a first driving unit 31, a support member 32 and a rotating member 33. Through the setting of the first driving unit 31, the movement of the support member 32 can be precisely controlled, thereby driving the arc surface 3321 on the rotating member 33 to roll along the side of the cell 4, thereby realizing precise control of the folding process, ensuring that the folding position and force of the insulating film are consistent, and improving the accuracy and consistency of the folding.

[0054] In practice, when the upper folded edge 3 moves downward, the arc-shaped surface 3321 comes into contact with the side of the battery cell 4 and generates friction, which enables the rotating part 33 to rotate upward along its own axis. Similarly, when the lower folded edge 3 moves upward, the rotating part 33 will rotate downward around its own axis.

[0055] Furthermore, in this embodiment, to enable the arcuate surface 3321 to roll more effectively, as shown in FIG2, the rotating member 33 includes a rotating shaft 331 rotatably mounted on the support member 32 and an arcuate block 332 fixed on the rotating shaft 331, with the arcuate surface 3321 formed on the arcuate block 332. Thus, the rotating member 33 consists of the rotating shaft 331 and the arcuate block 332. The design of the rotating shaft 331 enables the arcuate block 332 to rotate stably, thereby enabling the arcuate surface 3321 on the arcuate block 332 to roll along the side of the battery cell 4, keeping the insulating film attached to the side of the battery cell 4 flat.

[0056] Meanwhile, in this embodiment, the arc-shaped block 332 can be, for example, a rubber block. The advantage of this design is that by making the arc-shaped block 332 into rubber, it can provide good cushioning when the arc-shaped surface 3321 contacts the side of the battery cell 4, reducing wear on the insulating film on the side of the battery cell 4. At the same time, it can also increase the friction between the arc-shaped surface 3321 and the side of the battery cell 4, preventing slippage and ensuring that the arc-shaped surface 3321 maintains stable contact with the side of the battery cell 4 during rolling.

[0057] In this embodiment, in order to drive the support member 32 to slide more stably, as shown in FIG3, the first drive unit 31 in this embodiment includes a first slide rail 311 and a second slide rail 312 respectively disposed on both sides of the frame 1, a first slide table 313 disposed on the first slide rail 311, a second slide table 314 disposed on the second slide rail 312, and a first drive member 315 for driving the first slide table 313 and the second slide table 314 to move.

[0058] Here, by placing the first slide rail 311 and the second slide rail 312 on both sides of the frame 1 to form a symmetrical structure, a double slide rail design is achieved. This reduces the vibration when the first slide table 313 and the second slide table 314 move, thereby improving the overall stability and reliability of the mechanism. At the same time, under the drive of the first drive member 315, the first slide table 313 and the second slide table 314 slide on the first slide rail 311 and the second slide rail 312 respectively, ensuring that the first slide table 313 and the second slide table 314 remain synchronized and stable during movement.

[0059] It should be noted that the first driving component 315 in this embodiment can be a driving product well known to those skilled in the art, such as a hydraulic cylinder. In the specific structure, the first slide rail 311 and the second slide rail 312 are arranged at intervals along the width direction of the frame 1, and both extend along the height direction of the frame 1.

[0060] Furthermore, in this embodiment, the first slide 313 and the second slide 314 are connected by a connecting rod, and the power output end of the first drive member 315 is connected to the connecting rod. Thus, the first slide 313 and the second slide 314 can be raised and lowered synchronously by the first drive member 315, thereby reducing the number of first drive members 315 and saving manufacturing costs.

[0061] In addition, in this embodiment, in order to provide more stable support for the rotating member 33, as shown in FIG1, the support member 32 includes a first plate 321 disposed on the first slide 313 and a second plate 322 disposed on the second slide 314. Here, the first plate 321 and the second plate 322 are respectively disposed on the first slide 313 and the second slide 314 to form a symmetrical support structure, which can evenly distribute the load and reduce deformation or vibration caused by unilateral force.

[0062] Meanwhile, the rotating component 33 is clamped between the first plate 321 and the second plate 322. Thus, the rigidity and stability of the overall structure are enhanced by fixing the first plate 321 and the second plate 322, ensuring that the rotating component 33 remains stable during movement.

[0063] In the specific structure, the two ends of the rotating shaft 331 pass through the first plate 321 and the second plate 322 respectively. When the arc surface 3321 contacts the side of the battery cell 4, the arc block 332 can rotate around the axis of the rotating shaft 331 under the action of the rotating shaft 331, so that the insulating film can be flatly applied to the side of the battery cell 4.

[0064] In addition, in this embodiment, to better achieve continuous operation of the folding mechanism, as shown in Figures 2 and 4, the folding part 3 also includes a reset member 34. The reset member 34 is disposed between the support member 32 and the rotating member 33 to reset the position of the rotating member 33 after it detaches from the side of the battery cell 4. Here, by setting the reset member 34, the rotating member 33 can be automatically returned to its initial position after it detaches from the side of the battery cell 4, reducing the need for manual intervention and improving the degree of automation of the operation.

[0065] Taking the folded edge 3 below as an example, under the drive of the first drive member 315, the first slide 313 and the second slide 314 slide upward along the first slide rail 311 and the second slide rail 312 respectively, so that the arc block 332 on the rotating shaft 331 can contact the side of the battery cell 4.

[0066] Secondly, during the ascent of the first slide 313 and the second slide 314, due to the friction between the arc-shaped surface 3321 and the side of the battery cell 4, the arc-shaped block 332 will rotate downward around the axis of the rotating shaft 331, thus attaching the insulating film to the side of the battery cell 4.

[0067] It is worth mentioning that in this embodiment, the arc-shaped block 332 only participates in smoothing the insulating film. The arc-shaped block 332 will rotate as the first slide 313 and the second slide 314 rise. After the first slide 313 and the second slide 314 rise to a certain height, the arc-shaped block 332 will disengage from the side of the battery cell 4. At this time, the rotating shaft 331 will return to its initial position under the action of the reset member 34.

[0068] More specifically, in this embodiment, the reset element 34 can be, for example, a torsion spring. One end of the torsion spring is connected to the rotating element 33, and the other end is connected to the support element 32. Here, the reset element 34 adopts a torsion spring, which has a simple structure and is easy to install. Furthermore, the torsion spring has excellent elastic recovery capability and can be precisely designed according to the movement range and reset requirements of the rotating element 33, ensuring that the rotating element 33 can accurately reset to the preset position each time, avoiding positional deviation.

[0069] In the specific structure, one end of the rotating shaft 331 is provided with a plurality of pin holes 3311 arranged at intervals along its own circumference. One end of the torsion spring is inserted into any pin hole 3311, and the other end of the torsion spring is connected to the first plate 321 or the second plate 322. Thus, by changing the position of the torsion spring inserted into the pin hole 3311, the initial angle of the arc block 332 can be changed, thereby adapting to different specifications of battery cells 4.

[0070] Of course, in other embodiments, torsion springs can also be connected to both sides of the rotating shaft 331 respectively. That is, multiple pin holes 3311 are provided at both ends of the rotating shaft 331, arranged along its own circumferential spacing, so that one end of the torsion springs on both sides of the rotating shaft 331 is inserted into the corresponding pin hole 3311, and the other end of the two torsion springs is connected to the first plate 321 and the second plate 322 respectively.

[0071] It should be noted that the initial positional relationship between the two torsion arms of the torsion spring in this embodiment is fixed. Therefore, when the position of one torsion arm is adjusted, the other torsion arm moves accordingly. In the specific structure, when it is necessary to change the initial position of the arc block 332, by adjusting the position of the torsion arm connected to the first plate 321 or the second plate 322, the torsion arm connected to the pin hole 3311 can drive the arc block 332 to rotate, thereby changing the initial angle of the arc block 332.

[0072] In addition, in this embodiment, referring to FIG1, the adjustment unit 22 includes a second drive member 221 disposed on the frame 1 and a push rod 222 disposed on the second drive member 221, wherein the push rod 222 is disposed on the power output end of the second drive member 221 to adjust the position of the battery cell 4 on the support platform 21 under the drive of the second drive member 221.

[0073] Here, the second driving component 221 enables precise control of the movement of the push rod 222, allowing for fine-tuning of the position of the battery cell 4 on the support platform 21 and ensuring accurate positioning of the battery cell 4. Specifically, the second driving component 221 in this embodiment can be a driving product well-known to those skilled in the art, such as a hydraulic cylinder.

[0074] In practice, after placing the battery cell 4 on the support platform 21, the push rod 222 is pushed under the drive of the second drive member 221 to adjust the position of the battery cell 4 on the support platform 21. After the position adjustment is completed, the second drive member 221 is driven again to drive the push rod 222 away from the battery cell 4. Then, the folding part 3 is driven to fold the edge.

[0075] In this embodiment, when the folding mechanism is in use, the battery cell 4 is placed on the support platform 21, and the push rod 222 is pushed by the second driving member 221 to adjust the position of the battery cell 4. After the position adjustment is completed, the push rod 222 is driven away from the battery cell 4 by the second driving member 221.

[0076] Secondly, driven by the first driving member 315 above, the first slide table 313 and the second slide table 314 slide along the first slide rail 311 and the second slide rail 312 respectively, which can drive the upper rotating shaft 331 to move downward in the linear direction, so that the arc block 332 on it contacts the side of the battery cell 4. Under the action of the friction between the arc block 332 and the side of the battery cell 4, the arc block 332 rotates upward around the axis of the rotating shaft 331. When it rotates to the point where it no longer contacts the side of the battery cell 4, the arc block 332 will return to its initial position under the action of the reset member 34.

[0077] Subsequently, driven by the first driving member 315 below, the first slide table 313 and the second slide table 314 slide along the first slide rail 311 and the second slide rail 312 respectively, which drives the lower rotating shaft 331 to move in the linear direction, so that the arc-shaped block 332 on it contacts the side of the battery cell 4. Under the action of the friction between the arc-shaped block 332 and the side of the battery cell 4, the arc-shaped block 332 rotates downward around the axis of the rotating shaft 331. When it rotates to the point where it no longer contacts the side of the battery cell 4, the arc-shaped block 332 will return to its initial position under the action of the reset member 34. Thus, the insulating film on the side of the battery cell 4 can be smoothly applied to the side of the battery cell 4.

[0078] In this embodiment, the folding mechanism, through the positioning part 2, can adjust the position of the battery cell 4 on the support platform 21 under the action of the adjustment unit 22, ensuring the alignment accuracy between the battery cell 4 and the folding part 3. Simultaneously, it ensures that the arc-shaped surface 3321 of the folding part 3 tightly adheres to the side of the battery cell 4, and the insulating film is smoothed on the side of the battery cell 4 by the rolling motion of the arc-shaped surface 3321 of the folding part 3. This avoids affecting the insulating film on the opposite side, thus ensuring the flatness of the insulating film. Embodiment Two

[0079] This embodiment relates to a battery cell coating equipment, which is equipped with the folding mechanism described in Embodiment 1.

[0080] The battery cell coating equipment of this embodiment, by applying the folding mechanism in Embodiment 1, and through the setting of the positioning part 2, can adjust the position of the battery cell 4 on the support platform 21 under the action of the adjustment unit 22, to ensure the alignment accuracy of the battery cell 4 and the folding part 3, and at the same time make the arc surface 3321 of the folding part 3 closely fit the side of the battery cell 4, and smooth the insulating film on the side of the battery cell 4 by rolling the arc surface 3321 of the folding part 3, thereby avoiding affecting the insulating film on the opposite side and helping to ensure the flatness of the insulating film.

[0081] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A folding mechanism for folding an insulating film located on the side of a battery cell during cell encapsulation, characterized in that: The device includes a frame, a positioning part and a folding edge part disposed on the frame; the positioning part includes a support platform for supporting the battery cell and an adjustment unit for adjusting the position of the battery cell on the support platform; the folding edge part has an arcuate surface that can abut against the battery cell, and the arcuate surface can roll along the side of the battery cell to fold the insulating film.

2. The folding mechanism according to claim 1, characterized in that: The folded edge includes a first driving unit, a support member disposed on the first driving unit, and a rotating member disposed on the support member; the arc-shaped surface is formed on the rotating member, and the first driving unit can drive the support member to move so that the arc-shaped surface can roll along the side of the battery cell.

3. The folding mechanism according to claim 2, characterized in that: The rotating component includes a rotating shaft rotatably mounted on the support member and an arc-shaped block fixed on the rotating shaft, the arc-shaped surface being formed on the arc-shaped block.

4. The folding mechanism according to claim 3, characterized in that: The arc-shaped block is a rubber block.

5. The folding mechanism according to claim 2, characterized in that: The first drive unit includes a first slide rail and a second slide rail respectively disposed on both sides of the frame, a first slide table disposed on the first slide rail, a second slide table disposed on the second slide rail, and a first drive member for driving the first slide table and the second slide table to move.

6. The folding mechanism according to claim 5, characterized in that: The support includes a first plate disposed on the first slide and a second plate disposed on the second slide; the rotating member is sandwiched between the first plate and the second plate.

7. The folding mechanism according to claim 2, characterized in that: The folded edge also includes a reset member, which is disposed between the support member and the rotating member to reset the position of the rotating member after the rotating member is disengaged from the side of the battery cell.

8. The folding mechanism according to claim 7, characterized in that: The reset component is a torsion spring, one end of which is connected to the rotating component, and the other end of which is connected to the support component.

9. The folding mechanism according to any one of claims 1-8, characterized in that: The adjustment unit includes a second drive member disposed on the frame and a push rod disposed on the second drive member; the push rod is disposed on the power output end of the second drive member to adjust the position of the battery cell on the support platform under the drive of the second drive member.

10. A battery cell coating device, characterized in that: The battery cell coating equipment is provided with a folding mechanism according to any one of claims 1-9.

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