System for assembling battery gasket and battery assembling system

Abstract

The utility model relates to the technical field of battery preparation, in particular to a system for assembling a battery gasket and a battery assembling system. A system for assembling a battery gasket comprises a roll core bearing device, the roll core bearing device is arranged below a punching device, the roll core bearing device comprises at least one mounting station, the mounting station is used for bearing a roll core, and the position of the mounting station corresponds to the position of a discharging through hole in the bottom face of the punching device; the roller press is used for driving an insulation sheet to advance, a pressing template of the punching device is provided with an avoiding groove, the avoiding groove penetrates through the pressing template, a punching area of the punching device is arranged in the avoiding groove, and the insulation sheet can pass through the avoiding groove. The system solves the problems of high labor cost and low assembly efficiency due to the fact that a battery gasket is mostly manually mounted to the end part of a roll core in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of battery preparation, in particular to a system for assembling battery gaskets and a battery assembly system. Background Art

[0002] The gasket of the battery is usually set at a specific position inside the battery to isolate the direct contact between different electrodes and prevent short circuit. For cylindrical batteries (such as the common 18650 batteries) and square batteries, the specific position of the gasket may be different.

[0003] In cylindrical batteries, gaskets are usually placed between the battery casing and the end of the winding core. Their function is to isolate the battery tabs (positive and negative tabs) from the battery casing, especially during the battery assembly process, when the tabs are connected to the electrode terminals in the battery casing by welding or other means, the gaskets can prevent the tabs from short-circuiting with other parts of the casing. These gaskets are usually circular, with a through hole in the center for the tabs to pass through, and there may be tab perforations or notches on the edges to accommodate different tab arrangements. The gaskets of bipolar tab batteries are as follows: Fig.12 As shown, an arc-shaped hole is provided, and the battery's pole ear needs to pass through the arc-shaped hole. After welding is completed, the gasket continues to remain inside the battery as a long-term electrical isolation barrier. The insulation design of the square battery may be more complex and may include a specially designed "stop insulation protective cover". This protective cover is set between the metal shell of the battery and the winding core. In addition to playing an insulating role, it also prevents the winding core from sliding up and down in the shell, thereby increasing structural stability and reducing safety hazards. The protective cover may have a circular hole at the bottom to facilitate the infiltration of the electrolyte.

[0004] During the installation of the gasket, the tabs need to be ensured to pass through the corresponding holes, so the gaskets are usually installed manually to the ends of the winding cores. However, such installation results in high labor costs and low assembly efficiency. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that battery gaskets are mostly installed manually to the ends of the winding cores, resulting in high labor costs and low assembly efficiency, and to provide a system for assembling battery gaskets and a battery assembly system.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A system for assembling a battery gasket, comprising:

[0008] A core supporting device, the core supporting device is arranged below the punching device, the core supporting device comprises at least one installation station, the installation station is used to support the core, and the position of the installation station corresponds to the position of the discharge through hole on the bottom surface of the punching device;

[0009] A roller press is used to drive the insulating sheet forward. The pressing plate of the punching device is provided with an avoidance groove, which runs through the pressing plate. The punching area of ​​the punching device is arranged in the avoidance groove, and the insulating sheet can pass through the avoidance groove.

[0010] The core used here is a core that has not yet been provided with a lug. The gasket falls from the punching device through the discharge hole and reaches the top of the core without the lug installed, so the prepared gasket can fall to the predetermined position to complete the automatic assembly of the core. Compared with the prior art that uses manual installation of gaskets, the labor cost is reduced, which is beneficial to improving the assembly efficiency of the gasket. The avoidance groove passes through the pressing plate, so the insulating sheet can enter the avoidance groove from one side of the pressing plate and exit the avoidance groove from the other side. The roller press drives the insulating sheet to move in the avoidance groove to complete continuous punching and discharging, and cooperates with the punching device and the core support device to complete the preparation and automatic assembly of the core, which is beneficial to improving the assembly efficiency.

[0011] As a preferred solution of the utility model, a detachable mounting plate is arranged above the pressing plate, and the mounting plate is used for mounting the mold core.

[0012] The punching device comprises a punching plate and a pressing plate which are parallel to each other, and the punching plate is arranged below the pressing plate. The shape of the mold core is determined according to the shape of the required gasket. When the shape of the prepared gasket needs to be changed, the mounting plate is removed and replaced with a different type of mold core.

[0013] As a preferred solution of the utility model, a guide column is arranged between the pressing plate and the mounting plate, one end of the guide column is connected to the pressing plate, and the other end is slidably connected to the mounting plate, and the mounting plate can move along the length direction of the guide column.

[0014] The mounting plate moves along the length direction of the guide column, so that the corresponding material can be aligned during punching and the quality of punching can be guaranteed as much as possible.

[0015] As a preferred solution of the utility model, a cylinder is connected to the top surface of the mounting plate, and the cylinder is used to drive the mold core on the mounting plate to move toward the pressing plate.

[0016] As a preferred solution of the present utility model, the installation station of the core supporting device includes a clamping portion, and the clamping portion is used to clamp the core.

[0017] The clamping part is arranged to align one end of the winding core with the discharge through hole as far as possible, thereby ensuring the quality of gasket assembly as much as possible.

[0018] As a preferred solution of the present invention, the core supporting device includes a turntable, and a plurality of the clamping portions are arranged at intervals along the circumference of the turntable.

[0019] The rotating speed of the turntable matches the punching speed of the punching device. When the previous gasket is assembled, the turntable is rotated so that the next gasket can fall to the predetermined position to complete the automatic assembly.

[0020] As a preferred solution of the present invention, the core supporting device includes a conveyor belt, and the plurality of clamping portions are spaced apart along the length direction of the conveyor belt.

[0021] The conveying speed of the belt matches the punching speed of the punching device, so that the gasket can fall to the predetermined position to complete the automatic assembly.

[0022] As a preferred solution of the utility model, a lifting mechanism is provided below the winding core supporting device, and the lifting mechanism is used to lift up the winding core.

[0023] The lifting mechanism lifts the winding core to reduce the distance between the top surface of the winding core and the discharge through hole, thereby reducing the time for the gasket to fall, reducing the error of the gasket falling position, and ensuring the quality of the automatic assembly of the gasket.

[0024] As a preferred solution of the utility model, it also includes a PLC controller, and the PLC controller controls the start and stop of the punching device.

[0025] A battery assembly system includes a system for assembling battery gaskets as described above.

[0026] The use of a system for assembling battery gaskets as described above can solve the problem in the prior art that battery gaskets are mostly manually installed on the ends of the winding cores, resulting in high labor costs and low assembly efficiency.

[0027] As a preferred embodiment of the present invention, a welding device is further included, wherein the welding device is used to weld the battery tabs, wherein one end of the tabs is welded to the steel shell of the battery and the other end is connected to the gasket.

[0028] After the gasket is automatically assembled and placed in the steel shell, welding is performed. During the welding process, it is necessary to ensure that the gasket remains in place and does not deform or fall off due to welding heat or pressure.

[0029] As a preferred solution of the utility model, it also includes a quality inspection device, which is used to check whether the gasket is installed in place.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0031] 1. A system for assembling battery gaskets, comprising a core support device and a roller press. The gasket falls from the punching device through the discharge hole and reaches the top of the core without the lug installed, so the prepared gasket can fall to the predetermined position to complete the automatic assembly of the core. Compared with the prior art that uses manual installation of gaskets, it reduces labor costs and helps to improve the assembly efficiency of the gaskets. The avoidance groove passes through the press mold, so the insulating sheet can enter the avoidance groove from one side of the press mold and exit the avoidance groove from the other side. The roller press drives the insulating sheet to move in the avoidance groove to complete continuous punching and discharging, and cooperates with the punching device and the core support device to complete the preparation and automatic assembly of the core. This system solves the problem that battery gaskets in the prior art are mostly manually installed to the end of the core, resulting in high labor costs and low assembly efficiency.

[0032] 2. A battery assembly system, by using the above-mentioned system for assembling battery gaskets, can achieve automatic assembly of gaskets and improve assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of a system for assembling a battery gasket in Example 1;

[0034] Figure 2 is an isometric view of the punching device in Example 1;

[0035] Figure 3 is a front view of the punching device in Example 1;

[0036] Figure 4 is a side view of the punching device in Example 1;

[0037] Figure 5 yes Figure 3 Sectional view in the AA direction;

[0038] Figure 6 yes Figure 3 Cross-sectional view in the BB direction;

[0039] Figure 7 yes Figure 4 Cross-sectional view in CC direction;

[0040] Figure 8 is a schematic diagram of the installation of the roller press in Example 1;

[0041] Fig. 9 is a front view of a system for assembling a battery gasket in Example 1;

[0042] Fig.10is a side view of a system for assembling a battery gasket in Example 1;

[0043] Fig.11 is a bottom view of a system for assembling a battery gasket in Example 1;

[0044] Fig.12 It is the form of the gasket in Example 1.

[0045] Icons: 1-punching plate, 2-pressing plate, 3-mounting plate, 4-blanking mold core, 5-center hole mold core, 6-core pressing plate, 7-guide column, 8-arc hole mold core, 9-roller press, 10-turntable, 11-lifting mechanism, 12-cylinder, 13-insulating sheet, 14-winding core, 15-clamping part, 16-push rod, 17-discharging through hole. DETAILED DESCRIPTION

[0046] The utility model is described in detail below in conjunction with the accompanying drawings.

[0047] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0048] In the description of the following specific embodiments, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or the orientation or position relationship when the device / apparatus is usually used. These terms of orientation or position relationship are only for the convenience of description or simplification of the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation of the present invention.

[0049] The terms "horizontal", "vertical" and the like do not require the corresponding devices / components / elements to be absolutely horizontal or vertical or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in specific directions such as "horizontal" and "vertical", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.

[0050] The terms “first”, “second”, “third”, etc. are merely used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0051] The terms "set", "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 welding, riveting, bolting, threaded connection and other commonly used connection methods in the field. It can be directly connected or indirectly connected through an intermediate medium. It can also be the internal connection of two elements.

[0052] Example 1

[0053] like Figure 1 A system for assembling a battery gasket, comprising:

[0054] A punching device, the punching device is used to prepare the gasket, and the bottom surface of the punching device is provided with a discharge through hole 17;

[0055] The core supporting device is arranged below the punching device, and the core supporting device comprises at least one installation station, which is used to support the core 14 of the gasket to be installed, and the gasket can reach the predetermined position through the discharge hole 17.

[0056] like Figure 2-Figure 4 and Figure 7 As shown, in this embodiment, the punching device comprises a punching plate 1 and a pressing plate 2 which are parallel to each other, the punching plate 1 is arranged below the pressing plate 2, and a detachable mounting plate 3 is arranged above the pressing plate 2, and the mounting plate 3 can be installed with different types of cores. Fig.12 As shown, the gasket required in this embodiment is a ring with a β-angle arc hole, and the pole ear passes through the arc hole. This type of ring is suitable for batteries with two pole ears. Figure 5 As shown, in this embodiment, the punching device includes a center hole mold core 5, an arc hole mold core 8 and a blanking mold core 4. The insulating sheet 13 is punched out of the hollow circle and arc hole inside the gasket through the center hole mold core 5 and the arc hole mold core 8, and then punched out of the gasket shape through the blanking mold core 4. Figure 1 and Figure 7 As shown, a discharge through hole 17 is provided directly below the blanking die core 4. The gasket punched by the blanking die core 4 directly falls to the top of the winding core 14 through the discharge through hole 17 to complete the automatic assembly. In actual use, if a circular gasket suitable for a battery with full tabs is required, only the center hole die core 5 and the blanking die core 4 can be installed.

[0057] like Figure 2-Figure 4 and Figure 7 As shown, four guide posts 7 are arranged between the pressing plate 2 and the mounting plate 3. The four guide posts 7 are respectively arranged at the four corners of the pressing plate 2. One end of the guide post 7 is connected to the pressing plate 2, and the other end is slidably connected to the mounting plate 3, and the mounting plate 3 can move along the length direction of the guide post 7. It can avoid position deviation of the mounting plate 3 during stamping, which affects the stamping effect and thus affects the quality of the gasket. In this embodiment, the guide post 7 passes through the mounting plate 3.

[0058] like Figure 6-Figure 8 As shown, it also includes a roller press 9, which is used to drive the insulating sheet 13 forward. The die plate 2 is provided with an avoidance groove, which runs through the die plate 2. The punching area of ​​the punching device is set in the avoidance groove. The insulating sheet 13 can pass through the avoidance groove. The forward direction of the insulating sheet 13 is parallel to the direction from the center hole mold core 5 and the arc hole mold core 8 to the blanking mold core 4. The avoidance groove runs through the die plate 2, so the insulating sheet 13 can enter the avoidance groove from one side of the die plate 2 and exit the avoidance groove from the other side. The roller press 9 drives the insulating sheet 13 to move in the avoidance groove to complete continuous punching and discharging. The running speed of the roller press 9 is matched with the punching speed of the punching device, so that the insulating sheet 13 passing through the center hole mold core 5 and the arc hole mold core 8 can reach the corresponding area above the discharge through hole 17 during the next punching, and fall to the top of the winding core 14 after being punched by the blanking mold core 4. The insulating sheet 13 can be PET (polyethylene terephthalate), PVC (polyvinyl chloride), PE (polyethylene), quick paper, mica, highland barley paper and silica gel, which have good electrical insulation performance, temperature resistance, chemical stability and mechanical strength.

[0059] like Figure 9-10 As shown, the top surface of the mounting plate 3 is connected to a core pressing plate 6. A limiter is provided on the top surface of the core pressing plate 6. A cylinder 12 is provided above the core pressing plate 6. The cylinder 12 pushes the core on the mounting plate 3 toward the pressing plate 2 through a push rod 16, thereby completing the corresponding punching. The shape of the push rod 16 is adapted to the shape of the limiter on the top surface of the core pressing plate 6, which can prevent the push rod 16 from being separated from the core pressing plate 6 and affecting the punching effect.

[0060] like Figure 1 and Figure 9-11 As shown, the core support device is a turntable 10, and the installation station of the turntable 10 includes a clamping portion 15, and the clamping portion 15 is used to clamp the core 14. Four clamping portions 15 are arranged at intervals along the circumference of the turntable 10. The core 14 is directly opposite to the discharge hole 17. The rotation speed of the turntable 10 is adapted to the punching speed of the punching device. It is ensured as much as possible that when each gasket falls, there is a core 14 under the discharge hole 17 to complete the automatic assembly.

[0061] The rotating disk 10 can also be replaced by a conveyor belt (not shown in the figure), and a plurality of the clamping parts 15 are arranged at intervals along the length direction of the conveyor belt. The moving speed of the conveyor belt is adapted to the punching speed of the punching device.

[0062] A lifting mechanism 11 is provided below the core support device, and the lifting mechanism 11 is used to lift the core 14. The lifting mechanism 11 lifts the core 14, reducing the distance between the top surface of the core 14 and the discharge through hole 17, thereby reducing the time for the gasket to fall, reducing the error of the gasket falling position, and ensuring the quality of the gasket automatic assembly.

[0063] It also includes a PLC controller, which can control the movement speed of the cylinder 12, the movement speed of the roller press 9, the rotation speed of the turntable 10 and the lifting speed of the lifting mechanism 11 respectively, so that the movement speeds of various moving parts are coordinated. In the process of preparing the gasket, the insulating sheet 13 is rotated by the roller press 9, so that the insulating sheet 13 passes through the punching area of ​​the punching device. The semi-finished gasket punched by the center hole mold core 5 and the arc hole mold core 8 is located just above the discharge through hole 17 when the cylinder 12 pushes the blanking mold core 4 to punch the next time, and the center hole punched by the center hole mold core 5 is located at the center of the discharge through hole 17. The blanking mold core 4 punches the semi-finished gasket to complete the preparation of the gasket. At this time, the winding core 14 is just below the discharge through hole 17, so that the gasket can fall just at one end of the winding core 14 and reach its predetermined position. The turntable starts to rotate so that the next winding core 14 is directly opposite the discharge through hole 17. When the turntable 10 is replaced by a conveyor belt, the PLC controller can control the speed of the conveyor belt to coordinate with the rest of the motion devices.

[0064] Example 2

[0065] A battery assembly system includes a system for assembling a battery gasket as described in Example 1. It also includes a welding device, which is arranged in the next step of the system for assembling the battery gasket. The welding device is used to weld the battery tab to the battery terminal, and during this process, it is necessary to ensure that the gasket remains in place and is not deformed or detached due to welding heat or pressure.

[0066] A quality inspection device is also provided after the welding device, which can be an X-ray inspection or an ultrasonic inspection to confirm that the gasket is installed in place and there is no risk of short circuit.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for assembling battery gaskets, characterized in that: Include: A core support device, the core support device is arranged below the punching device, the core support device comprises at least one installation station, the installation station is used to support the core (14), the position of the installation station corresponds to the position of the discharge through hole (17) on the bottom surface of the punching device; A roller press (9), the roller press (9) is used to drive the insulating sheet (13) forward, the pressing plate (2) of the punching device is provided with an avoidance groove, the avoidance groove passes through the pressing plate (2), the punching area of ​​the punching device is arranged in the avoidance groove, and the insulating sheet (13) can pass through the avoidance groove.

2. A system for assembling battery gaskets according to claim 1, characterized in that: It also comprises a punching device, and a detachable mounting plate (3) is arranged above the pressing plate (2), and the mounting plate (3) is used for mounting the mold core.

3. A system for assembling battery gaskets according to claim 2, characterized in that: A guide column (7) is provided between the pressing plate (2) and the mounting plate (3); one end of the guide column (7) is connected to the pressing plate (2) and the other end is slidably connected to the mounting plate (3); and the mounting plate (3) is capable of moving along the length direction of the guide column (7).

4. A system for assembling battery gaskets according to claim 2, characterized in that: The top surface of the mounting plate (3) is connected to a cylinder (12), and the cylinder (12) is used to drive the mold core on the mounting plate (3) to move toward the pressing plate (2).

5. A system for assembling battery gaskets according to any one of claims 1 to 4, characterized in that: The installation station of the winding core supporting device comprises a clamping portion (15), and the clamping portion (15) is used to clamp the winding core (14).

6. A system for assembling battery gaskets according to claim 5, characterized in that: The winding core supporting device comprises a rotating disk (10), and a plurality of clamping portions (15) are arranged at intervals along the circumference of the rotating disk (10).

7. A system for assembling battery gaskets according to claim 5, characterized in that: The core supporting device comprises a conveyor belt, and a plurality of clamping portions (15) are arranged at intervals along the length direction of the conveyor belt.

8. A system for assembling battery gaskets according to any one of claims 1 to 4, characterized in that: A lifting mechanism (11) is provided below the winding core supporting device, and the lifting mechanism (11) is used to lift up the winding core (14).

9. A system for assembling battery gaskets according to any one of claims 1 to 4, characterized in that: It also comprises a PLC controller, which controls the start and stop of the punching device.

10. A battery assembly system, characterized in that: A system for assembling battery gaskets as described in any one of claims 1-9.

11. A battery assembly system according to claim 10, characterized in that: The invention also comprises a welding device, which is used for welding the pole ear of the battery, wherein one end of the pole ear is welded to the steel shell of the battery, and the other end is connected to the gasket.

12. A battery assembly system according to claim 10, characterized in that: A quality inspection device is also included, and the quality inspection device is used to check whether the gasket is installed in place.

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