Special-shaped sealing machine

Abstract

The utility model relates to the technical field of battery sealing devices, in particular to a special-shaped sealing machine. Comprising a sealing device used for sealing a battery, the sealing device comprises a first sealing part and a second sealing part which can move close to or away from each other, the opposite sides of the first sealing part and the second sealing part are each provided with a semi-cylindrical first pit, a boss is arranged on the circumferential surface of each first pit, and a second pit is formed in each boss; the side, close to the front face of the sealing device, of the boss is a pressing face, and the intersecting line of the pressing face and the axial section of the cylinder where the first pit is located is an arc line. According to the utility model, the pressing surface is adjusted to be arc-shaped, and the first pit for accommodating the tip end of the tab film is arranged, so that the arc-shaped pressing surface of the boss can effectively press an aluminum plastic film onto the conical tab film in the pressing process, the attachment of the tab films with different sizes is completed, the compatibility of the tab films with different sizes is realized, and the production efficiency is improved. And the adaptability of the sealing machine is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery sealing device technical field, concretely relates to a special-shaped sealing machine. BACKGROUND

[0002] The purpose of soft package battery packaging is to use high barrier soft packaging material to completely isolate the inside and outside of the battery cell, so as to maintain a vacuum, oxygen-free, water-free environment, and protect the internal electrochemical reaction of the battery cell, in the prior art, the sealing device for sealing the battery includes a first sealing part and a second sealing part that can move close to or away from each other, the end of the battery to be sealed is placed between the first sealing part and the second sealing part, then the first sealing part and the second sealing part are driven to move close to each other, the aluminum plastic film is pressed onto the conical tab rubber, and the packaging of the end of the battery to be sealed is completed, but in this way, the pressing surface of the sealing device needs to strictly match the shape of the tab rubber, when different shaped tab rubbers are extruded, different pressing surface sealing devices need to be replaced, otherwise the packaging effect will be affected and the fit will not be tight enough. SUMMARY

[0003] The utility model aims at providing a special-shaped sealing machine to solve the above technical problems.

[0004] The technical problems solved by the utility model can be solved by the following technical solutions.

[0005] A special-shaped sealing machine includes a sealing device for sealing a battery, the sealing device includes a first sealing part and a second sealing part that can move close to or away from each other, the opposite side of the first sealing part and the second sealing part is provided with a semicylindrical first recess, the first recess is provided with a boss on the circumferential surface, the boss is provided with a second recess, the side of the boss close to the front face of the sealing device is a pressing surface, and the intersection line of the pressing surface and the axis section of the cylinder where the first recess is located is an arc line.

[0006] Preferably, the boss is arranged on the side of the first recess close to the back face of the sealing device, the pressing surface is away from the front face of the sealing device by a certain depth, and a cavity for accommodating the end of the battery is formed.

[0007] Preferably, the pressing surface is a concave arc surface.

[0008] Preferably, the two ends of the boss are flush with the surface of the first sealing part or the second sealing part.

[0009] Preferably, the battery is a cylindrical battery, the end of the battery is provided with a conical tab rubber, the tab of the battery is led out from the tip of the tab rubber, and the side face of the battery is provided with an aluminum plastic film to be sealed.

[0010] Preferably, the side of the aluminum plastic film close to the end of the battery is provided with a cutting port, the cutting port is in the shape of a plurality of triangles or parallelograms uniformly distributed along the circumferential direction of the end of the battery.

[0011] Preferably, the triangle shape of the cutting port is an isosceles triangle, and the parallelogram shape of the cutting port is a rhombus.

[0012] Preferably, the total area S of the cutting port is,

[0013] πrl / 2 < S < πrl

[0014] Wherein, r represents the conical radius of the tab glue, and l represents the conical generatrix length of the tab glue.

[0015] Preferably, a support frame is further included, the support frame is arranged on one side of the front surface of the sealing device, and a clamping hole for clamping the battery is arranged between the frame bodies of the support frame.

[0016] Preferably, the support frame is rotatably connected with a rotating device with the axis of the clamping hole as the rotation axis.

[0017] The beneficial effects of the present application are as follows: by adjusting the pressing surface to be arc-shaped and arranging the first pit for accommodating the tip of the tab glue, the arc-shaped pressing surface of the boss can effectively press the aluminum plastic film onto the conical tab glue during the pressing process, the fitting of tab glues of different sizes is completed, the compatibility of tab glues of different sizes is realized, and the adaptation capability of the sealing machine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the sealing device in the embodiment of the present application;

[0019] Figure 2 It is a three-dimensional structure schematic view of the second sealing part in the embodiment of the present application;

[0020] Figure 3 It is a longitudinal sectional view of the battery in the embodiment of the present application;

[0021] Figure 4 It is a structure schematic view of the support frame in the embodiment of the present application.

[0022] In the drawings: 1, sealing device; 11, first sealing part; 12, second sealing part; 2, tab hole; 3, first pit; 4, boss; 5, second pit; 6, pressing surface; 7, battery; 71, tab glue; 72, tab; 73, aluminum plastic film; 8, support frame; 81, clamping hole. DETAILED DESCRIPTION

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0026] A type of irregular sealing machine, such as Figures 1 to 3 As shown, a sealing device 1 for sealing a battery 7 is included. The sealing device 1 includes a first sealing part 11 and a second sealing part 12 that can move closer to or further away from each other. A semi-cylindrical first recess 3 is provided on the opposite side of the first sealing part 11 and the second sealing part 12. A boss 4 is provided on the circumferential surface of the first recess 3. A second recess 5 is provided on the boss 4. The side of the boss 4 that is close to the front of the sealing device 1 is a pressing surface 6. The intersection of the pressing surface 6 and the axial section of the cylinder where the first recess 3 is located is an arc line.

[0027] Specifically, in view of the shortcomings of the prior art, the present invention adjusts the pressing surface 6 to be arc-shaped. Its arc-shaped structure can be compatible with tab adhesives 71 of different sizes. During the sealing process of the battery 7, the end of the battery 7 is first placed between the first sealing part 11 and the second sealing part 12. Then, the first sealing part 11 and the second sealing part 12 are driven to move closer to each other. When the first sealing part 11 and the second sealing part 12 are attached, the first pit 3 on the first sealing part 11 and the second sealing part 12 together form a tab hole 2. At least a part of the tip of the tab adhesive 71 and the tab 72 extending from the tip of the tab adhesive 71 are located in the tab hole 2. The arc-shaped pressing surface 6 of the boss 4 presses the aluminum-plastic film 73 onto the conical tab adhesive 71, thus completing the sealing of the end of the battery 7 to be sealed.

[0028] In the prior art, the shape of the pressing surface needs to correspond to the conical tab adhesive 71. The axial section of the tab adhesive 71 is triangular. Therefore, in the prior art, the intersection of the pressing surface and the axial section of the circle where the first pit 3 is located is a line segment corresponding to the waist of the triangle. Therefore, when the battery 7 with different tab adhesives 71 is replaced, the shape of the pressing surface will not match the shape of the tab adhesive 71.

[0029] Preferably, the intersection line of the pressing surface 6 and the axial section of the circle where the first recess 3 is located is arc-shaped, so that at least part of the tip of the tab rubber 71 and the tab extending from the tip of the tab rubber 71 are located in the tab hole 2, and the aluminum plastic film 73 is pressed onto the conical tab rubber 71 by the arc-shaped pressing surface 6 of the boss 4, thereby completing the lamination of the tab rubber 71 of different sizes.

[0030] In a preferred embodiment, the boss 4 is arranged on the side of the first recess 3 close to the back of the sealing device 1, and the pressing surface 6 is spaced apart from the front surface of the sealing device 1 by a certain depth to form a cavity for accommodating the end of the battery 7.

[0031] In a preferred embodiment, the pressing surface 6 is an arc-shaped concave surface.

[0032] Specifically, the pressing surface 6 is an arc-shaped concave surface, so that the end of the pressing surface 6 close to the second recess 5 contacts the aluminum plastic film 73 earlier than the middle part of the pressing surface 6, and the end of the pressing surface 6 close to the second recess 5 provides additional pressing force on the aluminum plastic film 73 during pressing, thereby providing better pressing effect.

[0033] Further specifically, during pressing, the aluminum plastic film 73 is generally located between the two ends of the pressing surface 6, and of course in other embodiments, the aluminum plastic film 73 can also exceed the end of the pressing surface 6 close to the second recess 5, and an additional cutting step is performed after pressing is completed.

[0034] In a preferred embodiment, the two ends of the boss 4 are flush with the surface of the first sealing portion 11 or the second sealing portion 12.

[0035] Specifically, when the first sealing portion 11 and the second sealing portion 12 are laminated, the first recess 3 on the first sealing portion 11 and the second sealing portion 12 together form a tab hole 2, and at least part of the tip of the tab rubber 71 and the tab 72 extending from the tip of the tab rubber 71 are located in the tab hole 2.

[0036] In a preferred embodiment, the battery 7 is a cylindrical battery, the end of the battery 7 is provided with a conical tab rubber 71, the tab 72 of the battery 7 extends from the tip of the tab rubber 71, and the side of the battery 7 is provided with an aluminum plastic film 73 to be sealed.

[0037] In a preferred embodiment, the aluminum plastic film 73 is provided with a cutting opening on the side close to the end of the battery 7, and the cutting opening has the shape of a plurality of triangles or parallelograms uniformly distributed along the circumferential direction of the end of the battery 7.

[0038] In a preferred embodiment, the triangular shape of the cutting opening is an isosceles triangle, and the parallelogram shape of the cutting opening is a rhombus.

[0039] In a preferred embodiment, the total area S of the cutting opening is,

[0040] πrl / 2 < S < πrl

[0041] wherein r represents the conical radius of the tab rubber 71, and l represents the conical generatrix length of the tab rubber 71.

[0042] Specifically, before sealing, the aluminum plastic film 73 needs to be cut by a cutting machine. In the prior art, the cutting opening on the side of the end portion of the battery 7 of the aluminum plastic film 73 is usually a uniformly distributed rectangle. This results in that, after pressing, when the aluminum plastic film 73 with several rectangular cutting openings is attached to the conical tab rubber 71, interference occurs between adjacent rectangles, so that they overlap each other, and the overlapping part forms a wrinkle. Based on this, the shape of the cutting opening of the aluminum plastic film 73 is improved in the utility model, the shape of the cutting opening is cut into a uniformly distributed triangle or parallelogram, preferably an isosceles triangle or a rhombus, and the total area of the cutting opening is controlled, so that when the cutting opening is attached to the tab rubber 71 during pressing, overlapping is avoided.

[0043] In a preferred embodiment, as shown in Figure 4 the support frame 8 is provided on one side of the front face of the sealing device 1, and the frame body of the support frame 8 is provided with a clamping hole 81 for clamping the battery 7.

[0044] In a preferred embodiment, the support frame 8 is rotatably connected to a rotating device with the axis of the clamping hole 81 as the rotation axis.

[0045] Specifically, in the prior art, the first sealing portion 11 and the second sealing portion 12 are directly driven to move close to each other to seal the battery 7. This requires a relatively high sealing structure of the sealing machine. If the shape of the sealing is not regular enough, the sealing effect at different positions during sealing is not uniform enough, which leads to poor adhesion and is prone to wrinkles. Based on this, the first sealing portion 11 and the second sealing portion 12 are driven to move close to each other in the utility model, the first sealing portion 11 and the second sealing portion 12 are gradually attached, the arc-shaped pressing surface 6 gradually presses the aluminum plastic film 73 to the conical tab rubber 71, and at the same time, the battery 7 is rotated at a certain speed by the support frame 8, so that the battery 7 is sealed while being rotated, the function of smoothing the cutting opening is realized, the sealing effect is optimized, and wrinkles are avoided.

[0046] Further specifically, the rotating device adopts a motor, an output shaft of the motor rotates around the center of the clamping hole 81, and the output shaft of the motor is connected with the support frame 8 through a connecting assembly, so that the support frame 8 rotates around the center of the clamping hole 81.

[0047] The above merely describes the preferred embodiments of the present application, and is not intended to limit the implementation and protection scope of the present application. It should be understood by those skilled in the art that any equivalent replacement and obvious change made according to the content of the present application should be included in the protection scope of the present application.

Claims

1. A profile sealer comprising a sealing device (1) for sealing a battery (7), said sealing device (1) comprising a first sealing portion (11) and a second sealing portion (12) movable towards or away from each other, characterized in that, The first sealing part (11) and the second sealing part (12) are provided with a semicylindrical first recess (3) on the opposite side, the first recess (3) is provided with a boss (4) on the circumferential surface, the boss (4) is provided with a second recess (5), the boss (4) is provided with a pressing surface (6) on the side close to the front surface of the sealing device (1), and the intersection line of the pressing surface (6) and the axis section of the cylinder of the first recess (3) is an arc line.

2. The machine of claim 1, wherein The boss (4) is arranged on the side of the first recess (3) close to the back surface of the sealing device (1), the pressing surface (6) is away from the front surface of the sealing device (1) by a certain depth to form a cavity for accommodating the end of the battery (7).

3. The machine of claim 1, wherein The pressing surface (6) is a concave arc surface.

4. The machine of claim 1, wherein The two ends of the boss (4) are flush with the surface of the first sealing part (11) or the second sealing part (12).

5. The machine of claim 1, wherein The battery (7) is a cylindrical battery, the end of the battery (7) is provided with a conical tab rubber (71), the tab (72) of the battery (7) is drawn from the tip of the tab rubber (71), and the side surface of the battery (7) is provided with an aluminum plastic film (73) to be sealed.

6. The machine of claim 5, wherein The aluminum plastic film (73) is provided with a cutting opening on the side close to the end of the battery (7), and the cutting opening has the shape of a plurality of triangles or parallelograms uniformly distributed along the circumferential direction of the end of the battery (7).

7. The machine of claim 6, wherein The triangular shape of the cutting opening is an isosceles triangle, and the parallelogram shape of the cutting opening is a rhombus.

8. The machine of claim 6, wherein The total area S of the cutting opening is πrl / 2＜S<πrl Wherein, r represents the conical radius of the tab rubber (71), and l represents the conical generatrix length of the tab rubber (71).

9. The machine of claim 1, wherein Further comprising a support frame (8), the support frame (8) is arranged on the side of the front surface of the sealing device (1), and the frame body of the support frame (8) is provided with a clamping hole (81) for clamping the battery (7).

10. The machine of claim 9, wherein The support frame (8) is rotatably connected to a rotating device with the axis of the clamping hole (81) as the rotation axis.

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