Battery cell precision sealing mechanism

Abstract

The utility model discloses a kind of battery cell fine sealing mechanism, including rack, head mounting rack, first longitudinal lifting mechanism, replaceable head module, support seat, transverse moving mechanism, mounting seat and second longitudinal lifting mechanism, head mounting rack is installed in rack front end, first longitudinal lifting mechanism is installed in rack top, first longitudinal lifting mechanism is used to drive head mounting rack longitudinal lifting movement, replaceable head module can be detachably installed in head mounting rack bottom, the utility model is integrated in as a whole module by the replaceable head module set, with upper head and lower head, it is convenient to replaceable head module's replacement operation, it is convenient to quickly change type and facilitate debugging, reduce downtime, head is just parallel to requirement outside rack, then head is installed on rack, upper and lower head datum is identical, debugging is simple, head parallelism is higher, battery cell seal thickness consistency is high, battery cell quality is better.

Description

Technical Field

[0001] This utility model relates to the field of battery cell precision sealing technology, specifically a battery cell precision sealing mechanism. Background Technology

[0002] The double-folding edge dispensing machine is a lithium-ion battery double-folding edge dispensing equipment. It includes a battery transport mechanism and, from front to back, sequentially arranged mechanisms for edge shaping, positioning, cutting, first folding, dispensing, second folding, hot and cold stamping, and two-sided finishing. Two mechanisms are symmetrically arranged on the left and right sides of the battery transfer mechanism. The clamps hold the battery cells and move them in a U-shape from front to back to complete all workstations. This invention simultaneously performs cutting, first folding, and dispensing on both sides of the battery. The clamps must be compatible with multiple battery cell models, automatically adjusting the clamp thickness according to the battery size. A mechanical positioning method is used to adjust the width direction of the battery cells. A visual inspection mechanism automatically detects the first folding and dispensing quality during production, eliminating cutting and folding abnormalities due to battery width tolerances, thus improving battery yield and production efficiency. The battery cells undergo cutting, first folding, and dispensing within the clamps; one side of the cell is completed before the other side is processed. Most importantly, the battery cells and clamps use a U-shaped circulating flow system.

[0003] In traditional lithium battery manufacturing, the cell sealing process is completed within a secondary sealing cavity. However, since ultra-thin cells cannot be positioned within the ultra-thin cavity, the initial secondary sealing is performed within the secondary sealing cavity. The cell sealing process is then placed on a double-folding dispensing machine, where the cell is positioned before final sealing. This process has two main drawbacks: First, the traditional sealing mechanism, using linear bearings and guide posts within the secondary sealing cavity, suffers from maintenance issues. The guide posts for the upper and lower sealing heads are separate, and the reference guide posts are not the same, resulting in inconsistent sealing thickness accuracy. Second, it is difficult to debug, has a long changeover time, and the limited maintenance space within the cavity makes debugging difficult due to the high temperature of the sealing head, which can cause burns. Therefore, a new cell sealing mechanism needs to be designed to address these problems. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a high-precision and fast switching fixture for CCS hot riveting, which aims to solve the problem that the replacement of CCS hot riveting fixtures in existing CCS hot riveting equipment mainly relies on manual labor, resulting in a cumbersome disassembly and assembly process and reduced switching efficiency of CCS hot riveting equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A cell precision sealing mechanism, comprising: frame; A head mounting bracket is installed at the front end of the frame; The first longitudinal lifting mechanism is installed on the top of the frame and is used to drive the end cap mounting frame to move longitudinally up and down. A replaceable end cap module is detachably installed at the bottom of an end cap mounting frame. The replaceable end cap module includes an assembly base, an upper end cap fixedly connected to the bottom of the assembly base, a base plate, and a lower end cap fixedly connected to the top of the base plate. The lower end cap is positioned corresponding to the upper end cap. Support base, the support base being disposed below the frame; A lateral movement mechanism is installed between the support base and the frame, and the lateral movement mechanism is used to drive the frame to move laterally back and forth. Mounting base, the mounting base being disposed on the outside of the support base; The second longitudinal lifting mechanism is installed between the mounting base and the support base, and is used to drive the support base to move longitudinally up and down.

[0006] Preferably, the head mounting bracket includes: The movable seat, wherein the first longitudinal lifting mechanism is used to drive the movable seat to move longitudinally up and down; A movable block, wherein the movable block is disposed below the movable base; A pressure sensor, which is fixedly connected to the bottom of the movable block; Mounting block, wherein the mounting block is disposed below the movable block; Two first support guide rods are provided and are vertically fixedly connected to the top of both ends of the mounting block. The movable seat and the movable block are slidably engaged with the first support guide rods. A limit sleeve is fixedly connected to the top of the first support guide rod. A spring is disposed between the movable seat and the movable block, and is sleeved on the outside of the first support guide rod.

[0007] Preferably, the replaceable end cap module further includes: The second support guide rod is provided in multiple ways and is vertically fixedly connected to the top of both ends of the base plate. A ball bushing that is slidably sleeved with the second support guide rod is fixedly connected to one side of the mounting base. The top plate is fixedly connected to the top of a plurality of second support guide rods.

[0008] Preferably, push-pull handles are fixedly connected to the back of both the top plate and the bottom plate.

[0009] Preferably, the bottom of the mounting block is provided with a slot, and the top of the assembly base is fixedly connected with a locking block. The assembly base and the mounting block are fixed together by the locking block being inserted into the slot for alignment.

[0010] Preferably, the frame is provided with a through slot for the replaceable end cap module to pass through.

[0011] Preferably, two guide frames are fixedly connected to the bottom of the frame, the guide frames are located below the base plate, and multiple guide wheels are rotatably connected to the guide frames along the length direction.

[0012] Preferably, a positioning seat is fixedly connected to the front end of the frame corresponding to the base plate, and the top of the positioning seat is provided with a positioning groove to accommodate the base plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention integrates the upper and lower end caps into a single unit through a replaceable end cap module. The mounting base is slidably connected to the second support guide rod via a ball bushing, improving the stability of the longitudinal movement of the mounting base and ensuring a stable press fit between the upper and lower end caps. A push-pull handle allows for easy handling and replacement of the replaceable end cap module. Alignment with the mounting block via a locking block allows for easy insertion into the mounting block's slot, facilitating assembly of the replaceable end cap module with the end cap mounting frame. The design is simple and convenient, enabling quick model changes and easy debugging, reducing downtime. The end caps are aligned to the required parallelism outside the frame before being installed on the frame. With identical upper and lower end cap references, debugging is simple, resulting in higher end cap parallelism, consistent cell sealing thickness, and better cell quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the battery cell precision sealing mechanism; Figure 2 This is a schematic diagram of the end cap mounting bracket structure; Figure 3 This is a schematic diagram of the guide frame and guide wheel structure; Figure 4 This is a schematic diagram of the replaceable head module structure; Figure 5 This is a schematic diagram of the positioning seat structure.

[0015] In the diagram: 1. Frame; 2. Head mounting bracket; 201. Movable seat; 202. First support guide rod; 203. Mounting block; 2031. Slot; 204. Movable block; 205. Pressure sensor; 206. Spring; 3. First longitudinal lifting mechanism; 4. Replaceable head module; 401. Top plate; 402. Bottom plate; 403. Second support guide rod; 404. Assembly seat; 4041. Slot; 405. Ball bushing; 406. Upper head; 407. Lower head; 408. Push-pull handle; 5. Positioning seat; 501. Positioning groove; 6. Support seat; 7. Lateral moving mechanism; 8. Mounting seat; 9. Second longitudinal lifting mechanism; 10. Guide frame; 1001. Guide wheel. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Example: Please refer to Figures 1-5 This embodiment provides a cell sealing mechanism, including a frame 1, a head mounting frame 2, a first longitudinal lifting mechanism 3, a replaceable head module 4, a support base 6, a lateral moving mechanism 7, a mounting base 8, and a second longitudinal lifting mechanism 9. The head mounting frame 2 is mounted at the front end of the frame 1, and the first longitudinal lifting mechanism 3 is mounted at the top of the frame 1. The first longitudinal lifting mechanism 3 is used to drive the head mounting frame 2 to move longitudinally. The replaceable head module 4 is detachably mounted at the bottom of the head mounting frame 2. The replaceable head module 4 includes an assembly base 404, an upper head 406 fixedly connected to the bottom of the assembly base 404, a base plate 402, and a lower head 406 fixedly connected to the top of the base plate 402. 7. The lower end cap 407 and the upper end cap 406 are positioned correspondingly. The end cap mounting frame 2 includes a movable seat 201 and a mounting block 203. The first longitudinal lifting mechanism 3 is used to drive the movable seat 201 to move longitudinally. The assembly seat 404 and the mounting block 203 are detachably installed. The support seat 6 is located below the frame 1. The transverse moving mechanism 7 is installed between the support seat 6 and the frame 1. The transverse moving mechanism 7 is used to drive the frame 1 to move laterally back and forth. The mounting seat 8 is located outside the support seat 6. The mounting seat 8 is fixed to the cell packaging equipment by bolts. The second longitudinal lifting mechanism 9 is installed between the mounting seat 8 and the support seat 6. The second longitudinal lifting mechanism 9 is used to drive the support seat 6 to move longitudinally.

[0018] Specifically, during use, the transverse moving mechanism 7 drives the frame 1 and the replaceable end cap module 4 to move back and forth, thereby moving the replaceable end cap module 4 to the battery cell. The second longitudinal lifting mechanism 9 drives the support base 6, the frame 1, and the replaceable end cap module 4 to move longitudinally as a whole to adjust the height, thereby moving the lower end cap 407 to contact the skirt of the battery cell. The first longitudinal lifting mechanism 3 drives the end cap mounting bracket 2, the assembly base 404, and the upper end cap 406 to move longitudinally to adjust the height, thereby moving the upper end cap 406 to the position of the lower end cap 407, thereby realizing the fine sealing operation of the battery cell.

[0019] It should be noted that in this embodiment, the first longitudinal lifting mechanism 3, the lateral moving mechanism 7, and the second longitudinal lifting mechanism 9 all adopt servo motor lead screw modules, which are existing technologies. Their specific structures and working principles will not be elaborated here. The moving part of the first longitudinal lifting mechanism 3 is fixedly connected to the moving seat 201, the moving part of the lateral moving mechanism 7 is fixedly connected to the frame 1, and the moving part of the second longitudinal lifting mechanism 9 is fixedly connected to the support seat 6. Of course, in this embodiment, guide rails can be installed between the moving seat 201 and the frame 1, the support seat 6 and the frame 1, and the frame 1 and the mounting seat 8 to improve the stability of the movement of the moving seat 201, the frame 1, and the support seat 6.

[0020] In this embodiment, as Figure 4 As shown, the replaceable end cap module 4 also includes a second support guide rod 403 and a top plate 401. Multiple second support guide rods 403 are provided; in this embodiment, four are specifically provided. The second support guide rods 403 are vertically fixedly connected to the tops of both ends of the base plate 402. A ball bushing 405, which slidably engages with the second support guide rod 403, is fixedly connected to one side of the mounting base 404. The top plate 401 is fixedly connected to the tops of the multiple second support guide rods 403, connecting them into a single unit and providing support for the tops of the second support guide rods 403, ensuring the structural stability of the second support guide rods 403 in a vertical state. The mounting base 404 is slidably connected to the second support guide rods 403 through the ball bushing 405, improving the stability of the longitudinal movement of the mounting base 404. This allows the upper end cap 406 to stably press against the lower end cap 407, forming the replaceable end cap module 4 into a single module that can be replaced as a whole.

[0021] In this embodiment, as Figure 4 As shown, push-pull handles 408 are fixedly connected to the back of both the top plate 401 and the bottom plate 402. The push-pull handles 408 are used by the staff to hold the handles, which facilitates the overall movement and replacement of the replaceable end cap module 4.

[0022] In this embodiment, as Figure 2 and Figure 4As shown, the mounting block 203 has a slot 2031 at its bottom, and the mounting base 404 has a locking block 4041 fixedly connected to its top. The mounting base 404 and the mounting block 203 are fixedly engaged by the locking block 4041 being inserted into the slot 2031. The cross-section of the locking block 4041 and the slot 2031 is T-shaped. When the replaceable head module 4 and the head mounting bracket 2 are disassembled and replaced, the locking block 4041 on the mounting base 404 is inserted into the slot 2031 of the mounting block 203 to assemble the replaceable head module 4 and the head mounting bracket 2. The operation is simple and convenient, facilitating the replacement of the replaceable head module 4, enabling quick model changeover and convenient debugging, and reducing downtime.

[0023] In this embodiment, as Figure 2 and Figure 5 As shown, a positioning seat 5 is fixedly connected to the front end of the frame 1 corresponding to the base plate 402. The top of the positioning seat 5 has a positioning groove 501 to accommodate the base plate 402. When the replaceable end cap module 4 is assembled, the base plate 402 is placed inside the positioning groove 501 of the positioning seat 5 to limit the position of the base plate 402, thereby positioning the assembly position of the replaceable end cap module 4 and avoiding the problem of misalignment and displacement of the replaceable end cap module 4 during operation. Preferably, in order to improve the positioning stability of the replaceable end cap module 4, the base plate 402 and the positioning seat 5 can also be reinforced by bolt connection. In order to improve the smoothness of the base plate 402 entering the positioning groove 501, the opening of the positioning groove 501 and the end of the base plate 402 near the positioning groove 501 are provided with sliding guide slopes, which help the base plate 402 to enter the positioning groove 501 more smoothly.

[0024] In this embodiment, as Figure 3 As shown, the frame 1 has a through slot for the replaceable head module 4 to pass through. Two guide frames 10 are fixedly connected to the bottom of the frame 1. The guide frames 10 are located below the base plate 402. Multiple guide wheels 1001 are rotatably connected to the guide frames 10 along the length direction. Through the through slot provided on the frame 1, the replaceable head module 4 can be assembled with the head mounting frame 2 from the through slot. The replacement head module 4 is assembled from the rear of the frame 1 through the through slot toward the head mounting frame 2. During assembly, the replaceable head module 4 is placed on the guide wheels 1001 to reduce the friction when the replaceable head module 4 moves, which helps the replaceable head module 4 to move and assemble.

[0025] In this embodiment, as Figure 2As shown, the end cap mounting bracket 2 also includes a movable block 204, a pressure sensor 205, a first support guide rod 202, and a spring 206. The movable block 204 is located below the movable seat 201. The pressure sensor 205 is fixedly connected to the bottom of the movable block 204. The mounting block 203 is located below the movable block 204. Two first support guide rods 202 are provided and are vertically fixedly connected to the top of both ends of the mounting block 203. The movable seat 201 and the movable block 204 are slidably engaged with the first support guide rods 202. A limit sleeve is fixedly connected to the top of the first support guide rod 202. The spring 206 is located between the movable seat 201 and the movable block 204 and is sleeved on the outside of the first support guide rod 202. Each of the first support guide rods 202 is fitted with a spring 206. When the first longitudinal lifting mechanism 3 drives the moving seat 201 to move downward, the moving seat 201 drives the upper end cap 406 and the lower end cap 407 to cooperate in sealing the battery cell. This generates pressure on the mounting block 203, causing the mounting block 203 to drive the first support guide rod 202 to move closer to the moving seat 201. Under the action of the spring 206, the moving block 204 is pushed to move closer to the mounting block 203, thereby generating pressure on the pressure sensor 205. The pressure sensor 205 is used to detect the pressure of the upper end cap 406 on the battery cell in real time, control the pressure at the set threshold, and maintain the pressure for a certain period of time. The sealing is completed, ensuring the quality of the battery cell.

[0026] Working principle: During operation, the first longitudinal lifting mechanism 3, the lateral moving mechanism 7, and the second longitudinal lifting mechanism 9 are in their initial positions, opening the upper end cap 406 and the lower end cap 407. The battery cell is then clamped by a fixture. As the fixture moves to the front of the battery cell sealing mechanism, once the battery cell is in place, the lateral moving mechanism 7 drives the frame 1 and the replaceable end cap module 4 forward, placing the battery cell between the upper end cap 406 and the lower end cap 407. Then, the second longitudinal lifting mechanism 9 drives the support base 6, the frame 1, and the replaceable end cap module 4 to move longitudinally upwards to adjust the height, allowing the battery cell skirt to rest on the lower end cap 407. Finally, the first longitudinal lifting mechanism 3 drives the end cap mounting bracket 2 downwards. When the end cap mounting bracket 2 moves, it drives the mounting base 404 and the upper end cap 406 to move downwards synchronously. The upper end cap 406 and the lower end cap 407 cooperate to press the precision-sealed battery cell. At the same time, the mounting block 203 drives the first support guide rod 202 to move closer to the moving base 201. Under the action of the spring 206, the moving block 204 moves closer to the mounting block 203, thereby generating pressure on the pressure sensor 205. The pressure sensor 205 is used to detect the pressure of the upper end cap 406 on the precision sealing of the battery cell in real time, control the pressure at the set threshold, and maintain the pressure for a certain period of time. The sealing is completed. Then, the first longitudinal lifting mechanism 3, the lateral moving mechanism 7 and the second longitudinal lifting mechanism 9 are reset, and the precision sealing is completed.

[0027] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A cell precision sealing mechanism, characterized in that, include: Rack (1); Head mounting bracket (2), which is installed at the front end of the frame (1); The first longitudinal lifting mechanism (3) is installed on the top of the frame (1) and is used to drive the end cap mounting frame (2) to move longitudinally. Replaceable head module (4), the replaceable head module (4) is detachably installed at the bottom of the head mounting frame (2), the replaceable head module (4) includes a mounting base (404), an upper head (406) fixedly connected to the bottom of the mounting base (404), a base plate (402) and a lower head (407) fixedly connected to the top of the base plate (402), the lower head (407) and the upper head (406) are positioned corresponding to each other; Support base (6), the support base (6) is disposed below the frame (1); A lateral movement mechanism (7) is installed between the support base (6) and the frame (1). The lateral movement mechanism (7) is used to drive the frame (1) to move laterally back and forth. Mounting base (8), which is disposed on the outside of the support base (6); The second longitudinal lifting mechanism (9) is installed between the mounting base (8) and the support base (6) and is used to drive the support base (6) to move longitudinally.

2. The cell precision sealing mechanism according to claim 1, characterized in that, The head mounting bracket (2) includes: The movable seat (201) is equipped with the first longitudinal lifting mechanism (3) for driving the movable seat (201) to move longitudinally. A movable block (204) is disposed below the movable base (201); Pressure sensor (205), the pressure sensor (205) is fixedly connected to the bottom of the moving block (204); Mounting block (203), which is disposed below the movable block (204); Two first support guide rods (202) are provided and are vertically fixedly connected to the top of both ends of the mounting block (203). The movable seat (201) and the movable block (204) are slidably engaged with the first support guide rods (202). A limit sleeve is fixedly connected to the top of the first support guide rods (202). A spring (206) is disposed between the movable seat (201) and the movable block (204) and is sleeved on the outside of the first support guide rod (202).

3. The cell precision sealing mechanism according to claim 2, characterized in that, The replaceable head module (4) also includes: The second support guide rod (403) is provided in multiple ways and is vertically fixedly connected to the top of both ends of the base plate (402). The mounting base (404) is fixedly connected to a ball bushing (405) that is slidably sleeved with the second support guide rod (403). The top plate (401) is fixedly connected to the top of a plurality of second support guide rods (403).

4. The cell precision sealing mechanism according to claim 3, characterized in that, Push-pull handles (408) are fixedly connected to the back of both the top plate (401) and the bottom plate (402).

5. The cell precision sealing mechanism according to claim 3, characterized in that, The mounting block (203) has a slot (2031) at its bottom, and the mounting base (404) is fixedly connected to a block (4041) at its top. The mounting base (404) and the mounting block (203) are aligned and fixed by the block (4041) being inserted into the slot (2031).

6. The cell precision sealing mechanism according to claim 1, characterized in that, The frame (1) has a through slot for the replaceable end cap module (4) to pass through.

7. A cell precision sealing mechanism according to claim 1, characterized in that, The bottom of the frame (1) is fixedly connected to two guide frames (10), which are located below the base plate (402). Multiple guide wheels (1001) are rotatably connected to the guide frames (10) along the length direction.

8. A cell precision sealing mechanism according to claim 1, characterized in that, A positioning seat (5) is fixedly connected to the front end of the frame (1) at the base plate (402), and a positioning groove (501) for accommodating the base plate (402) is opened on the top of the positioning seat (5).

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