Edge curling and packaging equipment and method for power battery

Abstract

The invention belongs to the technical field of batteries, and discloses hemming and packaging equipment and method for a power battery, and the equipment comprises a supporting device, a pressing device, a plurality of roller structures and at least one hot air device. The supporting device is composed of a supporting table top and a supporting plate assembly, the pressing device corresponds to the supporting plate assembly and is used for pressing and heating a battery to be hemmed, the roller structure is installed on the supporting plate assembly and connected with the hot air device, and the hemming part of the battery is heated through the pressing device and / or the hot air device to soften glue. Softened glue can better fill tiny gaps to form a uniform and compact sealing layer, the sealing performance is enhanced, chemical substance leakage is prevented, the safety of the battery is ensured, in addition, the heating process is beneficial for forming uniform curled edges, reducing cracks, improving the quality of the curled edges, reducing the force needed by rollers, reducing equipment abrasion and prolonging the service life, and the service life of the battery is prolonged. According to the equipment, the efficient and high-quality power battery packaging is realized by accurately controlling the heating and curling processes.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a crimping packaging device and method for a power battery. Background Art

[0002] When curling a battery, the existing curling equipment usually first applies glue to the battery shell cover, then dries the shell cover coated with glue, and then the curling equipment curls the battery shell cover. However, the corrosion-resistant glue on the market is in a solution state. After being applied to the shell cover and dried, the glue on the shell cover will become relatively hard and prone to cracks. During the curling process of the battery shell cover, the hardening of the glue will increase the friction during the curling process, and the roller needs to apply greater force when curling, which can easily lead to accelerated equipment wear or uneven curling. In addition, the cracks in the glue will become a weak point in the curling process, resulting in uneven curling or breakage at the stress concentration point, affecting the sealing performance of the battery shell cover. At the same time, the cracked and hardened glue cannot form a good bond with the battery shell cover, thereby reducing the sealing performance and increasing the risk of leakage, which increases the safety risk of the battery during use. Summary of the invention

[0003] The main purpose of the present invention is to provide a curling packaging device and method for a power battery, aiming to solve the technical problem that the curling equipment directly curls and seals the battery shell cover coated with glue and dried, resulting in poor sealing performance of the battery shell cover and large wear of the curling equipment.

[0004] In order to achieve the above-mentioned invention object, the present invention provides a crimping packaging device for a power battery, comprising a supporting device, a pressing device, a plurality of roller structures and at least one hot air device;

[0005] The supporting device comprises a supporting table and a supporting plate assembly, wherein the supporting plate assembly and the pressing device are respectively arranged on the supporting table, and the supporting plate assembly corresponds to the pressing device, and the pressing device is used to press and heat the battery to be curled placed on the supporting plate assembly;

[0006] The roller structure and the hot air device are respectively arranged on the support plate assembly, and the hot air device and the roller structure respectively correspond to the battery to be curled. The curling part of the battery to be curled is heated by the pressing device and / or the hot air device, so that the roller structure curls the curling part.

[0007] Furthermore, the support plate assembly includes a lifting device, which includes a first driving member and a battery support plate. The first driving member is arranged at an end of the support table top away from the clamping device. The battery support plate is connected to the first driving member via a connecting shaft connected to the first driving member and passing through the support table top. The battery support plate is used to place the battery to be curled.

[0008] Furthermore, the clamping device includes a supporting beam and a top assembly, the supporting beam is arranged on the supporting table top, the top assembly is connected to the supporting beam and corresponds to the battery to be curled placed on the battery support plate, and a heating block is arranged on the side of the top assembly close to the battery to be curled.

[0009] Furthermore, the support plate assembly also includes a rotating device, which includes a turntable and a divider, the divider is arranged on the supporting table top, the turntable is movably connected to one end of the divider away from the supporting table top, and a plurality of roller structures are arranged on the turntable at intervals.

[0010] Further, the roller structure includes a first movable component and a second movable component, the first movable component includes at least two first slide rails, a first slider and a pull rod, the first slide rail is connected to the turntable, the first slider is slidably connected to the first slide rail, the second movable component is arranged at an end of the first slider away from the first slide rail, the pull rod is arranged on the first slider, and the pull rod is used to pull the second movable component forward and backward.

[0011] Furthermore, a plurality of positioning grooves are arranged on the supporting table top, a plurality of limiting columns are arranged around the positioning grooves, and the limiting columns are in contact with the inner wall of the first slide rail.

[0012] Furthermore, the roller structure also includes a third movable component, the second movable component includes at least two second slide rails, a second slider and a second driving member, the second slide rail is connected to the first slider through a movable support plate, the second slider is movably connected to the second slide rail, the third movable component is arranged at an end of the second slider away from the second slide rail, the second driving member is arranged on the second slider, and the second driving member is used to drive the third movable component to move forward and backward.

[0013] Furthermore, the support plate assembly also includes a contour wheel connected to the connecting shaft, the contour wheel is located between the battery support plate and the support table top, and the end of the movable support plate away from the second driving member is movably connected to the contour wheel.

[0014] Furthermore, a snap-in groove is provided on one side of the contour wheel facing the supporting tabletop, and at least two snap-in wheels are provided on one end of the movable support plate close to the contour wheel, and the movable support plate is connected to the contour wheel by snapping the snap-in wheels in the snap-in groove.

[0015] Furthermore, the roller structure also includes a roller body, the third moving component includes at least two third slide rails, a third slider and a screw rod, the third slide rail is connected to the second slider through a support column, the third slider is movably connected to the third slide rail, the roller body is connected to one end of the third slider away from the third slide rail, the screw rod is connected to the third slider, and the screw rod is used to drive the roller body to move up and down.

[0016] Furthermore, the roller structure also includes a pressure sensor, which is located between the roller body and the third slider. The pressure sensor is used to collect pressure information applied by the roller body to the battery to be curled and send it to the second driving member. The second driving member adjusts the feed amount of the roller body according to the pressure information.

[0017] Furthermore, when the number of the roller structures is even, the curved surfaces of the roller bodies that are opposite to each other are the same, and the curved surfaces of the adjacent roller bodies are different.

[0018] Furthermore, a plurality of detachable limit blocks are arranged on the battery support plate, and the limit blocks are used to limit the movement of the battery to be curled.

[0019] The present invention further provides a crimping packaging method for a power battery, which is applied to the device described in any one of the above embodiments, comprising:

[0020] Placing the battery to be curled, which is coated with glue and dried, on the support plate assembly;

[0021] Lifting the support plate assembly upwards so that the battery to be curled is located between the pressing device and the support plate assembly;

[0022] After the battery to be rolled is clamped and fixed, the roller structure is moved toward the battery to be rolled so that the roller structure abuts against the rolled portion of the battery to be rolled;

[0023] When the roller structure is curling the curling portion, the curling portion is heated by the pressing device and / or the hot air device, wherein the battery to be curled is fixed, the roller structure and the hot air device rotate relative to the battery to be curled, and the roller structure adjusts the feed amount of the roller structure in real time according to the pressure change.

[0024] Beneficial effects:

[0025] A curling packaging device for a power battery of the present invention comprises a supporting device, a pressing device, a plurality of roller structures and at least one hot air device; the supporting device comprises a supporting desktop and a supporting plate assembly, the supporting plate assembly and the pressing device are respectively arranged on the supporting desktop, and the supporting plate assembly corresponds to the pressing device, and the pressing device is used to press and heat the battery to be curled placed on the supporting plate assembly; the roller structure and the hot air device are respectively arranged on the supporting plate assembly, and the hot air device and the roller structure correspond to the battery to be curled respectively, the curling portion of the battery to be curled is heated by the pressing device and / or the hot air device, so that the roller structure curls the curling portion, thereby The over-compression device and / or the hot air device heats the curling part of the battery to be curled, so that the glue on the curling part coated with glue and dried is softened, so that the softened glue can better fill the tiny gaps between the curling parts, forming a more uniform and tighter sealing layer, thereby improving the sealing performance of the battery. At the same time, good sealing performance can effectively prevent the leakage of electrolyte or other chemicals inside the battery, ensuring the safe use of the battery. In addition, heating to soften the glue helps to form a more uniform curling during the curling process, reduce the problem of uneven curling or cracking due to too hard glue, and improve the overall quality of the curling. By softening the glue, the force required for the roller during the curling process can be reduced, thereby reducing wear on the equipment and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a crimping packaging device for a power battery according to an embodiment of the present invention;

[0027] Figure 2 A top view of a crimping packaging device with a support frame for a power battery according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the overall structure of a support plate assembly according to an embodiment of the present invention;

[0029] Figure 4 For an embodiment of the present invention Figure 3 A local enlarged view of point A;

[0030] Figure 5 It is a schematic diagram of the overall structure of a pressing device according to an embodiment of the present invention;

[0031] Figure 6 It is a schematic diagram of the overall structure of the roller structure according to one embodiment of the present invention;

[0032] Figure 7 A schematic diagram of the overall structure of a contour wheel according to an embodiment of the present invention;

[0033] Figure 8 The present invention is a flowchart of a crimping packaging method for a power battery according to an embodiment of the present invention.

[0034] in:

[0035] 1. Support device; 2. Pressing device; 3. Roller structure; 4. Hot air device; 5. Battery to be curled; 6. Support frame;

[0036] 10. Supporting tabletop; 11. Supporting plate assembly; 12. Positioning slot; 13. Limiting column;

[0037] 110. Lifting device; 111. Rotating device;

[0038] 1101, first driving member; 1102, battery support plate; 1103, connecting shaft; 1104, contour wheel; 1105, clamping groove; 1106, limit block; 1107, first limit block; 1108, second limit block;

[0039] 1110, turntable; 1111, divider; 1112, positioning notch;

[0040] 20. Support beam; 21. Top support assembly; 22. Heating block;

[0041] 210, connecting column; 211, pressing plate;

[0042] 30. First moving assembly; 31. Second moving assembly; 32. Third moving assembly; 33. Roller body; 34. Pressure sensor;

[0043] 301, first slide rail; 302, first slide block; 303, pull rod; 304, support block;

[0044] 310, second slide rail; 311, second slide block; 312, second driving member; 313, movable support plate; 314, clamping wheel;

[0045] 320, third slide rail; 321, third slide block; 322, screw rod; 323, support column; 324, fixed column; 325, screw rod support block;

[0046] 40. Hot air blower body; 41. Air guide duct.

[0047] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0052] Reference Figure 1-Figure 2 , this embodiment provides a crimping packaging device for a power battery, comprising a supporting device 1, a pressing device 2, a plurality of roller structures 3 and at least one hot air device 4;

[0053] The support device 1 includes a support table 10 and a support plate assembly 11, the support plate assembly 11 and the pressing device 2 are respectively arranged on the support table 10, and the support plate assembly 11 corresponds to the pressing device 2, and the pressing device 2 is used to press and heat the battery 5 to be curled placed on the support plate assembly 11;

[0054] The roller structure 3 and the hot air device 4 are respectively arranged on the support plate assembly 11, and the hot air device 4 and the roller structure 3 respectively correspond to the battery to be curled 5, and the curling part of the battery to be curled 5 is heated by the clamping device 2 and / or the hot air device 4, so that the roller structure 3 curls the curling part.

[0055] In the above embodiment, the curling packaging device for the power battery includes a supporting device 1, a pressing device 2, a plurality of roller structures 3 and at least one hot air device 4, wherein the supporting device 1 includes a supporting desktop 10 and a supporting plate assembly 11, the supporting desktop 10 is used to be fixedly connected to the supporting frame 6 of the device, the pressing device 2 is fixedly connected to the supporting desktop 10, and the supporting plate assembly 11 is also arranged on the supporting desktop 10, and the supporting plate assembly 11 and the pressing device 2 are arranged correspondingly on the supporting desktop 10. After the battery 5 to be curled is placed on the supporting plate assembly 11, the pressing device 2 is pressed. The tightening device 2 is used to press and heat the battery 5 to be curled placed on the support plate assembly 11. In addition, multiple roller structures 3 are fixedly connected to the support plate assembly 11. At the same time, the hot air device 4 is also fixedly connected to the support plate assembly 11, so that the hot air device 4 is electrically connected to the control system of the device. The hot air device 4 is located between adjacent roller structures 3, and when the hot air device 4 and the roller structure 3 are arranged on the support plate assembly 11, the hot air device 4 and the roller structure 3 respectively correspond to the curling part of the battery 5 to be curled placed on the support plate assembly 11, and the hot air device 4 is used to heat the battery to be curled. The curling part of the battery 5 is preferably fixedly connected by bolts. When the roller structure 3 performs curling and sealing on the curling part of the battery 5 to be curled, the pressing device 2 and the hot air device 4 heat the curling part of the battery 5 to be curled at the same time, or one of the pressing device 2 and the hot air device 4 heats the curling part of the battery 5 to be curled, so that the glue in the curling part coated with glue and dried is softened, and then the roller structure 3 curls the curling part. Therefore, the curling part of the battery 5 to be curled is heated by the pressing device 2 and / or the hot air device 4, so that the softened glue in the curling part can be better filled. The tiny gap between the curling parts forms a more uniform and tighter sealing layer, thereby improving the sealing performance of the battery. At the same time, good sealing performance can effectively prevent the leakage of electrolyte or other chemicals inside the battery, ensuring the safe use of the battery. In addition, heating to soften the glue helps to form a more uniform curling during the curling process, reducing the problem of uneven curling or cracking caused by too hard glue, thereby improving the overall quality of the curling. By softening the glue, the force required for the roller during the curling process can be reduced, thereby reducing wear on the equipment and extending the service life of the equipment.

[0056] Reference Figure 1-Figure 3 In one embodiment, the support plate assembly 11 includes a lifting device 110, and the lifting device 110 includes a first driving member 1101 and a battery support plate 1102. The first driving member 1101 is arranged at an end of the support desktop 10 away from the clamping device 2, and the battery support plate 1102 is connected to the first driving member 1101 through a connecting shaft 1103 connected to the first driving member 1101 and passing through the support desktop 10. The battery support plate 1102 is used to place the battery 5 to be curled.

[0057] In the above embodiment, the support plate assembly 11 includes a lifting device 110, and the lifting device 110 includes a first driving member 1101 and a battery support plate 1102. The first driving member 1101 is preferably a cylinder, so that the first driving member 1101 is connected to the control system of the device, and the first driving member 1101 is fixedly connected to the end of the support desktop 10 away from the clamping device 2, that is, the first driving member 1101 is located on the back of the support desktop 10, and the first driving member 1101 is located in the middle position of the support desktop 10, and a through hole is provided in the middle position of the support desktop 10, and a connecting shaft 1103 is provided on the first driving member 1101, and the connecting shaft 110 3 extends upward in the direction of the pressing device 2 and penetrates the through hole of the supporting table top 10, so that the battery support plate 1102 is connected to the end of the connecting shaft 1103 away from the first driving member 1101, and the battery support plate 1102 is used to place the battery 5 to be curled, so that the battery 5 to be curled is driven by the first driving member 1101 on the battery support plate 1102 to drive the connecting shaft 1103 to move up and down, and the jacking device 110 driven by the cylinder can easily adjust the height of the battery support plate 1102 to adapt to batteries 5 to be curled of different sizes, thereby improving the flexibility and adaptability of the equipment, ensuring the accurate alignment of the battery 5 to be curled during the curling process, thereby improving the curling quality.

[0058] Furthermore, a plurality of limit blocks 1106 are provided on the battery support plate 1102, and the limit blocks 1106 are detachably connected to the battery support plate 1102, and the connection method is preferably bolt connection, and the limit blocks 1106 are used to limit the movement of the battery 5 to be curled, so that when the battery 5 to be curled is placed on the battery support plate 1102, the outer wall of the battery 5 to be curled contacts the inner wall of the limit block 1106, and the limit block 1106 includes a first limit block 1107 and a second limit block 1108, and the first limit blocks 1107 and the second limit blocks 1108 are multiple, wherein the multiple first limit blocks 110 7 are evenly connected to the four edges of the battery support plate 1102, and multiple second limit blocks 1108 are evenly connected to the middle position of the battery support plate 1102, so that the space size formed by the multiple second limit blocks 1108 is smaller than the space size formed by the multiple first limit blocks 1107, and the centers of the two are located on the same axis. The detachable limit block 1106 allows the operator to quickly adjust the position of the limit block 1106 according to the size and shape of the battery 5 to be rolled to adapt to different battery specifications, and the limit block 1106 can accurately limit the position of the battery to ensure the stability and consistency of the battery during the rolling process.

[0059] Reference Figure 1-Figure 5, in one embodiment, the pressing device 2 includes a support crossbeam 20 and an abutting component 21. The support crossbeam 20 is disposed on the support tabletop 10. The abutting component 21 is connected to the support crossbeam 20 and corresponds to the battery to be curled 5 placed on the battery support plate 1102. A heating block 22 is provided on one side of the abutting component 21 close to the battery to be curled 5.

[0060] In the above embodiment, the pressing device 2 includes a support crossbeam 20 and an abutting component 21. The support crossbeam 20 is preferably in a U-shape, so that the support crossbeam 20 is fixedly connected to the middle position of the support tabletop 10 by bolts. The abutting component 21 is fixedly connected to the horizontal crossbeam parallel to the support tabletop 10 on the support crossbeam 20, and the abutting component 21 is located in the middle of the horizontal crossbeam. The abutting component 21 includes a connecting column 210 and a pressing plate 211. The abutting component 21 is fixedly connected to the horizontal crossbeam by bolts. The pressing plate 211 is connected to one end of the connecting column 210 away from the horizontal crossbeam, and the connecting column 210 is located in the middle of the pressing plate 211, which can apply pressure to the curled part of the battery more evenly, contribute to forming a uniform seal, and avoid local overpressure or underpressure. In addition, a heating block 22 is connected to one end of the pressing plate 211 away from the connecting column 210. The heating block 22 is fixedly connected to the connecting column 210. The pressing plate 211 and the heating block 22 have the same size, and the pressing plate 211 and the heating block 22 respectively correspond to the battery to be curled 5. The main heating source of the heating block 22 is the heating wire provided on the edge of the heating block 22, so that the heating wire on the heating block 22 corresponds to the curled part of the battery to be curled 5, ensuring that the heating block 22 can heat the curled part more concentratedly, improving the thermal efficiency, reducing energy waste, effectively ensuring that the glue dried inside the curled part can be stably softened, contributing to improving the curling speed and quality, and thus improving the overall production efficiency.

[0061] Refer to Figure 1-Figure 3 , in one embodiment, the support plate assembly 11 further includes a rotating device 111. The rotating device 111 includes a turntable 1110 and a divider 1111. The divider 1111 is disposed on the support tabletop 10. The turntable 1110 is movably connected to one end of the divider 1111 away from the support tabletop 10, and a plurality of the roller structures 3 are spaced apart on the turntable 1110.

[0062] In the above embodiment, the support plate assembly 11 also includes a rotating device 111, which includes a turntable 1110 and a divider 1111. The divider 1111 is arranged on the support desktop 10 and is electrically connected to the control system of the device, and the divider 1111 includes a divider 1111 main body and a divider motor, wherein the divider 1111 main body is fixedly connected to the end of the support desktop 10 away from the first driving member 1101, so that the divider 1111 main body and the first driving member 1101 are arranged opposite to each other, the divider motor is connected to the divider 1111 main body, and the divider motor is located on the side of the support desktop 10 where the first driving member 1101 is arranged, the turntable 1110 is connected to the end of the divider 1111 main body away from the support desktop 10 through a bearing inside the divider 1111 main body, so that the turntable 1110 and the divider 1111 main body are in an active connection state, and a connecting shaft 1103 is provided on the divider 1111 main body and the turntable 1110. The roller structures 3 are preferably 6 in number, so that the roller structure 3 drives the rotation of the turntable 1110 through the divider 1111, and then the roller structure 3 also rotates with the rotation of the turntable 1110. The divider 1111 and the turntable 1110 are driven by an electrically connected control system, so that a highly automated curling process can be achieved, reducing manual intervention and ensuring that the roller structure 3 accurately processes the curling portion of the curled battery 5. In addition, a positioning notch 1112 is provided at the edge of the turntable 1110, and the positioning notch 1112 is recessed inwardly toward the center of the turntable 1110, so that the shape of the positioning notch 1112 is preferably a trapezoid with the same inclined edges on both sides, so that when the roller structure 3 is installed, the trapezoidal positioning notch 1112 provides a clear reference edge, so that the roller structure 3 can be quickly and accurately positioned during installation, ensuring the correct installation position of the roller, and reducing the complexity and time of the installation process.

[0063] Reference Figure 1-Figure 3 , Figure 6 In one embodiment, the roller structure 3 includes a first movable component 30 and a second movable component 31, the first movable component 30 includes at least two first slide rails 301, a first slider 302 and a pull rod 303, the first slide rail 301 is connected to the turntable 1110, the first slider 302 is slidably connected to the first slide rail 301, the second movable component 31 is arranged at one end of the first slider 302 away from the first slide rail 301, the pull rod 303 is arranged on the first slider 302, and the pull rod 303 is used to pull the second movable component 31 forward and backward.

[0064] In the above embodiment, the roller structure 3 includes a first moving component 30 and a second moving component 31, wherein the first moving component 30 includes at least two first slide rails 301, a first slider 302 and a pull rod 303, the first slide rail 301 is fixedly connected to the turntable 1110, and the first slide rails 301 on both sides of the positioning notch 1112 are kept parallel to the inclined edge of the positioning notch 1112, the first slider 302 is slidably connected to the first slide rail 301, and the second moving component 31 is fixedly connected to the end of the first slider 302 away from the first slide rail 301, and the first slide rail 301 is fixedly connected to the adjacent first slide rail 30 A support block 304 is arranged on the edge of the rotating disk 1110, and a specified interval is formed between the support block 304 and the second movable assembly 31. The pull rod 303 penetrates the support block 304 and is connected to the first slider 302. The pull rod 303 is used to pull the first slider 302 to move on the first slide rail 301, and then the second movable assembly 31 is driven to move forward and backward through the first slider 302. By pulling the first slider 302 to move on the first slide rail 301 through the pull rod 303, the position of the second movable assembly 31 can be easily adjusted to meet the crimping requirements of batteries of different sizes.

[0065] Furthermore, a plurality of positioning grooves 12 are provided on the supporting table top 10, and the positioning grooves 12 are located between adjacent first slide rails 301. The positioning grooves 12 are preferably runway-shaped, and the length of the positioning grooves 12 is less than or equal to the length on the first slide rail 301. In addition, a plurality of limiting columns 13 are provided around the positioning grooves 12, and preferably four limiting columns 13 are provided, so that the four limiting columns 13 are symmetrically arranged in pairs at both ends of the short side of the positioning grooves 12, and a specified length is formed between the limiting columns 13 and the edges of the positioning grooves 12. When the first slide rail 301 is set on the turntable 1110, the limiting columns 13 contact the inner wall of the first slide rail 301, so that when the first slider 302 moves on the first slide rail 301, the limiting columns 13 reduce the risk of the first slider 302 deviating from or detaching from the first slide rail 301, thereby reducing potential safety accidents during operation and improving the safety of the working environment.

[0066] Reference Figure 1-Figure 3 , Figure 6 In one embodiment, the roller structure 3 also includes a third movable component 32, the second movable component 31 includes at least two second slide rails 310, a second slider 311 and a second driving member 312, the second slide rail 310 is connected to the first slider 302 through a movable support plate 313, the second slider 311 is movably connected to the second slide rail 310, the third movable component 32 is arranged at one end of the second slider 311 away from the second slide rail 310, the second driving member 312 is arranged on the second slider 311, and the second driving member 312 is used to drive the third movable component 32 to move forward and backward.

[0067] In the above embodiment, the roller structure 3 also includes a third moving component 32, the second moving component 31 includes at least two second slide rails 310, a second slider 311 and a second driving member 312, a moving support plate 313 is arranged on the first slider 302, and the first slider 302 is located in the middle position of the moving support plate 313, the second slide rail 310 is arranged on the moving support plate 313, so that the moving support plate 313 is located between the first slider 302 and the first slide rail 301, and the first slide rail 301 and the second slide rail 310 are kept parallel in space, the second slider 311 is arranged on the second slide rail 310, and the second slider 311 and the second slide rail 310 are slidably connected, the third moving component 32 is arranged at one end of the second slider 311 away from the second slide rail 310, and the second driving member 312 is connected to the second slider 311 through a driving shaft. The second driving member 312 is located at one end of the second slide rail 310 and is electrically connected to the control system of the device. The second driving member 312 and the pull rod 303 are located on the same side. The second driving member 312 is used to drive the second slider 311 to move on the second slide rail 310, and then drive the third movable component 32 to move back and forth on the second slide rail 310 through the second slider 311. The second driving member 312 is connected to the second slider 311 through a driving shaft, which can achieve precise control of the movement of the second slider 311 on the second slide rail 310, thereby precisely adjusting the position of the third movable component 32, and at the same time allowing the positions of the second movable component 31 and the third movable component 32 to be independently adjusted in different directions, providing greater flexibility and adjustment range.

[0068] Reference Figure 1-Figure 3 , Figure 6 In one embodiment, the support plate assembly 11 also includes a contour wheel 1104 connected to the connecting shaft 1103, the contour wheel 1104 is located between the battery support plate 1102 and the support desktop 10, and the movable support plate 313 is movably connected to the contour wheel 1104 at one end away from the second driving member 312.

[0069] In the above embodiment, the support plate assembly 11 also includes a profiling wheel 1104, which is fixedly connected to the connecting shaft 1103 by bolts, so that the connecting shaft 1103 passes through the profiling wheel 1104, and the profiling wheel 1104 is located between the battery support plate 1102 and the supporting desktop 10, so that the profiling wheel 1104 corresponds to the mobile support plate 313 in the roller structure 3. When the turntable 1110 is circular, the profiling wheel 1104 is preferably square, and the size of the turntable 1110 is larger than the size of the profiling wheel 1104. In addition, the mobile support plate 313 is away from the second driving member 312 at one end and is movably connected to the profiling wheel 1104. Arc-shaped chamfers are formed at the corners of the profiling wheel 1104. When the turntable 1110 drives the entire roller structure 3 to rotate, the movable support plate 313 is movably connected with the fixed profiling wheel 1104, so that the design of the profiling wheel 1104 allows the roller structure 3 to be adaptively adjusted according to the shape of the curling portion of the battery 5 to be curled during the curling process, ensuring that the roller always maintains optimal contact with the curling portion of the battery 5 to be curled, and at the same time ensuring that the roller structure 3 closely follows the rotation of the turntable 1110, thereby achieving more consistent and uniform pressure and contact on the curling portion during the curling process, avoiding deformation or damage caused by excessive pressure.

[0070] Reference Figure 1-Figure 3 , Figure 6-Figure 7 In one embodiment, a snap-in groove 1105 is provided on the side of the contour wheel 1104 facing the supporting table top 10, and at least two snap-in wheels 314 are provided on one end of the movable support plate 313 close to the contour wheel 1104, and the movable support plate 313 is connected to the contour wheel 1104 by being snap-in in the snap-in groove 1105 via the snap-in wheels 314.

[0071] In the above embodiment, a snap-in groove 1105 is provided on the profiling wheel 1104, and the snap-in groove 1105 is located on the side of the profiling wheel 1104 facing the supporting desktop 10, and the snap-in groove 1105 extends along the entire circumference direction of the profiling wheel 1104, so that the snap-in groove 1105 is in a connected state at the edge of the profiling wheel 1104, and at least two snap-in wheels 314 are provided at one end of the movable support plate 313 close to the profiling wheel 1104, when the movable support plate 313 is connected to the profiling wheel 1104, one of the snap-in wheels 314 is located in the snap-in groove 1105 and contacts the inner wall of the snap-in groove 1105, and the other snap-in wheel 314 is in contact with the inner wall of the snap-in groove 1105, and the other snap-in wheel 314 is in contact with the inner wall of the snap-in groove 1105. The wheel 314 contacts the outer wall of the profiling wheel 1104, and the thickness between the inner wall of the clamping groove 1105 and the outer wall of the profiling wheel 1104 is less than or equal to the length between the two clamping wheels 314, so that the interval between the two clamping wheels 314 is clamped with the profiling wheel 1104. When the movable support plate 313 rotates relative to the profiling wheel 1104, the two clamping wheels 314 rotate respectively relative to the inner wall of the clamping groove 1105 and the outer wall of the profiling wheel 1104. The clamping wheels 314 reduce the direct friction between the movable support plate 313 and the profiling wheel 1104, thereby reducing wear and effectively extending the service life of the profiling wheel 1104.

[0072] Reference Figure 1-Figure 3 , Figure 6 In one embodiment, the roller structure 3 also includes a roller body 33, the third moving assembly 32 includes at least two third slide rails 320, a third slider 321 and a screw rod 322, the third slide rail 320 is connected to the second slider 311 through a support column 323, the third slider 321 is movably connected to the third slide rail 320, the roller body 33 is connected to one end of the third slider 321 away from the third slide rail 320, the screw rod 322 is connected to the third slider 321, and the screw rod 322 is used to drive the roller body 33 to move up and down.

[0073] In the above embodiment, the roller structure 3 also includes a roller body 33, the third moving assembly 32 includes at least two third slide rails 320, a third slider 321 and a screw rod 322, a support column 323 is arranged at one end of the second slider 311 away from the second slide rail 310, wherein the support column 323 is a hollow structure connected on three sides, the third slide rail 320 is fixedly connected to the support column 323, and a hollow plate provided with the support column 323 of the third slide rail 320 is arranged perpendicular to the other two hollow plates, and a fixed column 324 is arranged between the two hollow plates, the third slider 321 is connected to the third slide rail 320, and the third slider 321 and the third slide rail 320 are in a sliding connection state, the roller body 33 is connected to one end of the third slider 321 away from the third slide rail 320, and screw rod support blocks 325 are arranged at both ends between adjacent third slide rails 320, the screw rod 322 passes through the screw rod support block 325 and the third slider 321, and the screw rod 322 is used to drive the third slider 32 1 moves on the third slide rail 320, and then drives the roller body 33 to move up and down through the third slider 321. The screw rod 322 is used to drive the third slider 321 to move on the third slide rail 320, which can realize the precise control of the up and down movement of the roller body 33, so as to accurately adjust the pressure and contact between the roller body 33 and the battery 5 to be curled, and at the same time allow the position of the roller body 33 to be independently adjusted in the vertical direction, providing greater flexibility and adjustment range; In addition, the hot air device 4 placed on the turntable 1110 includes a hot air blower body 40 and an air guide duct 41. The hot air blower body 40 is fixedly connected to the turntable 1110 and electrically connected to the control system of the device. The air guide duct 41 is arranged on one side of the hot air blower body 40 located on the battery 5 to be curled, and the free end of the air guide duct 41 is aligned with the curling part of the battery 5 to be curled, ensuring that the hot air generated by the hot air blower body 40 can be accurately transmitted to the curling part through the air guide duct 41, ensuring that the heating process is uniform and concentrated, and improving the curling quality.

[0074] Furthermore, when the number of roller structures 3 on the turntable 1110 is an even number, the curved surfaces of the roller bodies 33 in the roller structures 3 arranged diagonally on the turntable 1110 are the same, and the curved surfaces of the roller bodies 33 in the roller structures 3 arranged adjacent to each other on the turntable 1110 are different. When the even number of roller structures 3 are arranged around the turntable 1110 to form a circle, the roller structures 3 arranged relatively to each other use the diameter as a connecting line, so that the upper curved surfaces of the roller bodies 33 in the roller structures 3 at both ends of the diameter are the same, that is, the curvature values ​​of the curved surfaces of the roller bodies 33 in the roller structures 3 arranged diagonally are the same; when the roller structures 3 are arranged at The circumference formed around the turntable 1110 is a connecting line, and the curved surfaces of one roller structure 3 and the other roller structure 3 on the adjacent side are different, that is, the curvature values ​​of the curved surfaces of the roller bodies 33 in the adjacent roller structures 3 are different. By using roller bodies 33 with the same curved surfaces on the diagonal lines, it can be ensured that the pressure applied by the turntable 1110 to the battery during the curling process is more uniform, thereby improving the curling quality. The design of adjacent roller structures 3 using different curved surfaces allows the roller bodies 33 to adapt to the different curvatures of the battery casing at the corners, ensuring good contact throughout the curling process.

[0075] Reference Figure 1-Figure 3 , Figure 6 In one embodiment, the roller structure 3 also includes a pressure sensor 34, and the pressure sensor 34 is located between the roller body 33 and the third slider 321. The pressure sensor 34 is used to collect the pressure information applied by the roller body 33 to the battery to be curled 5 and send it to the second driving member 312. The second driving member 312 adjusts the feed amount of the roller body 33 according to the pressure information.

[0076] In the above embodiment, the roller structure 3 also includes a pressure sensor 34, wherein the pressure sensor 34 is arranged between the roller body 33 and the third slider 321. When the roller body 33 applies pressure to the curling portion of the battery 5 to be curled for curling, the pressure sensor 34 is used to collect pressure information applied by the roller body 33 to the battery 5 to be curled, and the pressure sensor 34 sends the pressure information to the second driving member 312, so that the second driving member 312 adjusts the feed amount of the roller body 33 according to the pressure information. The pressure sensor 34 can monitor the pressure applied by the roller body 33 to the curling portion of the battery in real time to ensure that the pressure remains within the optimal range. By sending the pressure information to the second driving member 312, the feed amount of the roller body 33 can be automatically adjusted to adapt to different battery sizes and material properties. Accurate pressure control helps to improve the consistency and quality of the curling process and reduce defects caused by excessive or insufficient pressure.

[0077] Reference Figure 1-Figure 8This embodiment provides a crimping packaging method for a power battery, which is applied to the device described in any one of the above embodiments, including:

[0078] S1: placing the battery 5 to be curled, which is coated with glue and dried, on the support plate assembly 11;

[0079] S2: Lift the support plate assembly 11 upwards so that the battery 5 to be curled is located between the pressing device 2 and the support plate assembly 11;

[0080] S3: After the battery 5 to be rolled is clamped and fixed, the roller structure 3 is moved toward the battery 5 to be rolled, so that the roller structure 3 abuts against the rolled portion of the battery 5 to be rolled;

[0081] S4: When the roller structure 3 is curling the curling portion, the curling portion is heated by the clamping device 2 and / or the hot air device 4, wherein the battery 5 to be curled is fixed, the roller structure 3 and the hot air device 4 rotate relative to the battery 5 to be curled, and the roller structure 3 adjusts the feed amount of the roller structure 3 in real time according to the pressure change.

[0082] In the above embodiment, firstly, the battery 5 to be curled of the power battery is placed on the support plate assembly 11 . The battery 5 to be curled refers to a battery that has been coated with special glue on the curling part of the battery and has been dried. The purpose of coating the glue is to form a good seal during the curling process, and the drying is to remove the solvent in the glue to ensure that the glue is in an appropriate viscosity state during curling. The lifting device 110 of the equipment is started, usually through a cylinder or other form of first driving member 1101, to lift the support plate assembly 11 upward, so that the battery 5 to be curled is lifted to an appropriate position between the clamping device 2 and the support plate assembly 11, wherein the lifting height can be adjusted according to the size of the battery 5 to be curled to ensure that the battery is subjected to uniform pressure during the curling process. When the battery 5 to be curled is lifted to a predetermined position, it is clamped and fixed by the clamping device 2. The clamping device 2 includes a supporting beam 20 and a push assembly 21, wherein the push assembly 21 may include a connecting column 210 and a pressing plate 211. During the clamping process, the pressing plate 211 remains stationary, and the lifting device 110 moves upward, so that the battery 5 to be curled is subjected to the pressure of the pressing plate 211 and the lifting device 110. The clamping force applied together ensures that the battery will not move during the curling process. After the battery 5 to be curled is clamped, the roller structure 3 will move toward the battery 5 to be curled until the roller structure 3 abuts against the curling portion of the battery 5 to be curled. The design of the roller structure 3 includes multiple rollers, which can be adjusted according to the sizes of different batteries to ensure close contact with the curling portion. The curling process is started, and the roller structure 3 begins to curl the curling portion. At the same time, the curling portion is heated by the clamping device 2 and / or the hot air device 4. The heating can further soften the glue, thereby forming a more secure seal during curling. The battery 5 to be curled remains fixed during this process, while the roller structure 3 and the hot air device 4 rotate relative to the battery 5 to be curled. During the curling process, the roller structure 3 will adjust the feed amount in real time according to the pressure information collected by the pressure sensor 34, effectively ensuring that the pressure applied during the entire curling process remains uniform and appropriate, avoiding deformation of the battery shell due to excessive pressure or poor sealing due to insufficient pressure.

[0083] Furthermore, before placing the battery 5 to be curled, which is coated with glue and dried, on the support plate assembly 11, the battery 5 to be curled is pre-treated, wherein the battery 5 to be curled includes a battery shell and an upper cover, and the battery shell is made of aluminum, and its dimensions are 374 mm in length, 274 mm in width, and 33 mm in height. The upper cover is made of aluminum, and its dimensions are 410 mm in length, 294 mm in width, and 5.5 mm in height. The battery shell and the upper cover are placed in an ultrasonic cleaning machine and cleaned with deionized water for 10 minutes at a cleaning temperature of 40°C. The battery shell and the upper cover are polished with sandpaper for 5 minutes, and the surface roughness after polishing is Ra1.6. Then, the battery shell and the upper cover are placed in a sulfuric acid solution with a mass fraction of 5%. , the soaking time is 10 minutes, the soaking temperature is room temperature, and finally, the battery shell and the upper cover are rinsed with deionized water for 5 minutes at room temperature; using a precise flow control system, the viscosity of the glue is set to 5000mPa·s, and PP (Polypropylene) glue or PE (Polyethylene) glue is evenly applied to the battery shell and the curling of the upper cover, the glue width is 5mm, and the glue thickness is 0.5mm. After the glue is applied, the battery shell and the upper cover are placed in an oven, and the baking temperature is set to 85℃ for 20 minutes, which ensures that the surface of the battery shell and the upper cover has good cleanliness and surface roughness, creates ideal surface conditions for glue application and curling, and improves the bonding strength of the curling and the sealing performance of the battery.

[0084] Further, after the curling portion is heated by the pressing device 2 and / or the hot air device 4, the battery 5 to be curled after the hot composite curling is cooled to room temperature, the cooling time is 20 minutes, the sealing performance of the battery 5 to be curled is judged, and the sealing performance of the battery 5 to be curled is detected by using a helium detector. The curled battery 5 to be curled is placed in the cavity of the helium detector, and the helium detector is turned on. The cavity is first vacuumed to 100pa, and then the battery 5 to be curled is vacuumed to a pressure of 10Kpa, and the pressure is maintained for 2S. Then helium is filled into the battery 5 to be curled, and the pressure reaches 20Kpa. Finally, the helium in the cavity is detected. If the vacuum time of the cavity is less than 8S, the pressure change of the battery 5 to be curled is less than 5Kpa when the pressure is maintained for 2S, and the helium leakage in 5S is less than 9.9×10-8Pa·m3 / s, it is considered that the sealing performance is good. Ensuring that the battery shell has good sealing performance is effective in preventing the leakage of chemical substances inside the battery and effectively reducing the production of defective products.

[0085] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A crimping packaging device for a power battery, characterized in that: It includes a supporting device, a pressing device, a plurality of roller structures and at least one hot air device; The supporting device comprises a supporting table and a supporting plate assembly, wherein the supporting plate assembly and the pressing device are respectively arranged on the supporting table, and the supporting plate assembly corresponds to the pressing device, and the pressing device is used to press and heat the battery to be curled placed on the supporting plate assembly; The roller structure and the hot air device are respectively arranged on the support plate assembly, and the hot air device and the roller structure respectively correspond to the battery to be curled. The curling part of the battery to be curled is heated by the pressing device and / or the hot air device, so that the roller structure curls the curling part.

2. The crimping packaging equipment for power batteries according to claim 1, characterized in that: The support plate assembly includes a lifting device, which includes a first driving member and a battery support plate. The first driving member is arranged at one end of the support table top away from the clamping device. The battery support plate is connected to the first driving member via a connecting shaft connected to the first driving member and passing through the support table top. The battery support plate is used to place the battery to be curled.

3. The crimping packaging equipment for power batteries according to claim 2, characterized in that: The clamping device includes a supporting beam and a top-pushing assembly, wherein the supporting beam is arranged on the supporting table top, the top-pushing assembly is connected to the supporting beam and corresponds to the battery to be curled placed on the battery support plate, and a heating block is arranged on one side of the top-pushing assembly close to the battery to be curled.

4. The crimping packaging device for a power battery according to claim 2, characterized in that: The support plate assembly also includes a rotating device, which includes a turntable and a divider. The divider is arranged on the support table top, the turntable is movably connected to an end of the divider away from the support table top, and a plurality of roller structures are arranged on the turntable at intervals.

5. The crimping packaging device for a power battery according to claim 4, characterized in that: The roller structure includes a first movable component and a second movable component, the first movable component includes at least two first slide rails, a first slider and a pull rod, the first slide rail is connected to the turntable, the first slider is slidably connected to the first slide rail, the second movable component is arranged at an end of the first slider away from the first slide rail, the pull rod is arranged on the first slider, and the pull rod is used to pull the second movable component forward and backward.

6. The crimping packaging equipment for power batteries according to claim 5, characterized in that: A plurality of positioning grooves are arranged on the support table top, a plurality of limiting columns are arranged around the positioning grooves, and the limiting columns are in contact with the inner wall of the first slide rail.

7. The crimping packaging equipment for power batteries according to claim 5, characterized in that: The roller structure also includes a third movable component, the second movable component includes at least two second slide rails, a second slider and a second driving member, the second slide rail is connected to the first slider through a movable support plate, the second slider is movably connected to the second slide rail, the third movable component is arranged at an end of the second slider away from the second slide rail, the second driving member is arranged on the second slider, and the second driving member is used to drive the third movable component to move forward and backward.

8. The crimping packaging equipment for power batteries according to claim 7, characterized in that: The support plate assembly also includes a contour wheel connected to the connecting shaft, the contour wheel is located between the battery support plate and the support table top, and the end of the movable support plate away from the second driving member is movably connected to the contour wheel.

9. The crimping packaging equipment for power batteries according to claim 8, characterized in that: The side of the contour wheel facing the support tabletop is provided with a snap-in groove, and the end of the movable support plate close to the contour wheel is provided with at least two snap-in wheels, and the movable support plate is snap-into the snap-in groove and connected with the contour wheel via the snap-in wheels.

10. The crimping packaging equipment for power batteries according to claim 7, characterized in that: The roller structure also includes a roller body, and the third moving component includes at least two third slide rails, a third slider and a screw rod. The third slide rail is connected to the second slider through a support column, and the third slider is movably connected to the third slide rail. The roller body is connected to an end of the third slider away from the third slide rail, and the screw rod is connected to the third slider. The screw rod is used to drive the roller body to move up and down.

11. The crimping packaging device for a power battery according to claim 10, characterized in that: The roller structure also includes a pressure sensor, which is located between the roller body and the third slider. The pressure sensor is used to collect pressure information applied by the roller body to the battery to be curled and send it to the second driving member. The second driving member adjusts the feed amount of the roller body according to the pressure information.

12. The crimping packaging device for a power battery according to claim 10, characterized in that: When the number of the roller structures is even, the curved surfaces of the roller bodies that are opposite to each other are the same, and the curved surfaces of the adjacent roller bodies are different.

13. The crimping packaging device for a power battery according to claim 2, characterized in that: The battery support plate is provided with a plurality of detachable limit blocks, and the limit blocks are used to limit the movement of the battery to be curled.

14. A crimping packaging method for a power battery, applied to the device according to any one of claims 1 to 13, characterized in that: include: Placing the battery to be curled, which is coated with glue and dried, on the support plate assembly; Lifting the support plate assembly upwards so that the battery to be curled is located between the pressing device and the support plate assembly; After the battery to be rolled is clamped and fixed, the roller structure is moved toward the battery to be rolled so that the roller structure abuts against the rolled portion of the battery to be rolled; When the roller structure is curling the curling portion, the curling portion is heated by the pressing device and / or the hot air device, wherein the battery to be curled is fixed, the roller structure and the hot air device rotate relative to the battery to be curled, and the roller structure adjusts the feed amount of the roller structure in real time according to the pressure change.

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