Sealing device
By combining the membrane pulling rod and the adjustment roller with the sealing tape to cover the battery cell liquid injection port, the problem of errors in the position of the battery cell liquid injection port and high cost is solved, and efficient and low-cost battery cell sealing is achieved.
Patent Information
- Application Number
- CN202422083909.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In the prior art, the battery cell liquid injection port has errors in the position and high cost, resulting in poor sealing of the battery cell and high cost.
The sealing tape matched by the pulling rod and the adjustment roller covers the liquid injection port of the battery cell, and cuts off the excess tape through a cutting knife to achieve effective sealing of the battery cell.
Ensure the sealing quality of the battery cell liquid injection port, avoid errors in the nail insertion position, and reduce sealing cost.
Smart Images
Figure CN223052353U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery cell manufacturing, in particular to a sealing device. Background Art
[0002] At present, in the industry, the injection port of the battery cell is generally temporarily sealed by inserting a rubber sealing nail. This solution uses a vibrating disk to feed the rubber sealing nails, and the nail inserting actuator inserts the rubber sealing nails into the injection port to seal the injection port of the battery cell. However, when this device is operating, problems such as incorrect nail insertion positions and missed nail insertions are likely to occur, resulting in the failure to seal the injection port of the battery cell in a timely manner, ultimately affecting the quality of the battery cell; moreover, the cost of the rubber sealing nails is relatively high, resulting in a relatively high sealing cost. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a sealing device to solve the technical problems of easy missed insertion and relatively high temporary sealing cost in the existing nail insertion temporary sealing device.
[0004] To achieve the above purpose, the utility model provides a sealing device for sealing the injection port of a battery cell, which includes:
[0005] A unwind mechanism, including an unwind roller and an adjusting roller; the unwind roller is used for unwinding the sealing tape roll.
[0006] A film pulling mechanism, including a film pulling rod; the sealing tape is wound around the outside of the adjusting roller and output to the film pulling rod; the film pulling rod can approach or move away from the adjusting roller.
[0007] A cutting mechanism, including a cutting knife; the cutting knife and the film pulling rod are located on the same side of the adjusting roller, and the cutting knife is used for cutting the sealing tape between the battery cell and the adjusting roller.
[0008] The adjusting roller is used to cooperate with the film pulling rod to cover the injection port of the battery cell with the sealing tape, and the film pulling rod is used to press the sealing tape against the injection port of the battery cell.
[0009] Preferably, it further includes a battery cell placement station; the sealing device has a first direction, and the battery cell placement station is used for placing a plurality of the battery cells so that the injection ports of the plurality of battery cells are arranged along the first direction; the adjusting roller, the cutting knife, and the battery cell placement station are arranged along the first direction; the film pulling rod approaches or moves away from the adjusting roller along the first direction.
[0010] Preferably, it further includes: a vision lens and a host computer; the vision lens is located above the battery cell placement station, the host computer is signal-connected to the vision lens, and the vision lens is used for acquiring information of the injection ports of the battery cells on the battery cell placement station.
[0011] Preferably, it further includes: a supplementary light; the supplementary light is located on the side of the film pulling rod away from the battery cell placing station, and the supplementary light is used to irradiate light towards the battery cell placing station.
[0012] Preferably, the film pulling rod is in a spindle convex roller shape.
[0013] Preferably, the convexity of the film pulling rod is 1 mm to 3 mm.
[0014] Preferably, the film pulling mechanism includes a film pulling frame; both ends of the film pulling rod are rotatably connected to the film pulling frame.
[0015] Preferably, both ends of the film pulling rod are provided with rotation mounting holes, and the film pulling frame is provided with a rotating shaft extending into the rotation mounting holes.
[0016] Preferably, the unwinding mechanism further includes: a guide roller and a positioning roller; the guide roller and the positioning roller are arranged between the adjusting roller and the unwinding roller, and the sealing tape after unwinding from the unwinding roller is wound around the guide roller, the positioning roller, and the adjusting roller.
[0017] Preferably, it further includes a winding mechanism; the winding mechanism includes a winding roller, and the winding roller is used to wind the release paper of the sealing tape.
[0018] The sealing device provided by the present utility model has the beneficial effects that: the film pulling rod and the adjusting roller cooperate to cover the liquid injection port of the battery cell with the sealing tape, and the film pulling rod presses the sealing tape towards the liquid injection port of the battery cell, achieving the purpose of sealing the battery cell. Therefore, in the process of sealing the liquid injection port of the battery cell, there is no need to use rubber sealing nails to seal the liquid injection port, so there will be no technical problems such as incorrect plugging positions and missed plugging, ensuring the sealing quality of the liquid injection port of the battery cell; and, compared with rubber sealing nails, the cost of the sealing tape is lower and it is easier to obtain, so as to reduce the sealing cost of the battery cell.
[0019] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings
[0020] Figure 1 is a schematic structural diagram of the sealing device according to an embodiment of the present utility model;
[0021] Figure 2 is a schematic structural diagram of the top view angle after the liquid injection port of the battery cell is covered by the sealing tape;
[0022] Figure 3 is a schematic structural diagram of the film pulling rod according to an embodiment of the present utility model;
[0023] Figure 4 is Figure 3 The schematic cross-sectional structure diagram in the A direction in
[0024] In the figure, 100 is the unwinding mechanism; 110 is the unwinding roller; 120 is the adjusting roller; 130 is the guide roller; 140 is the positioning roller; 200 is the film pulling mechanism; 210 is the film pulling rod; 211 is the rotating mounting hole; 220 is the film pulling frame; 300 is the cutting mechanism; 310 is the cutting knife; 400 is the battery cell placement station; 500 is the vision lens; 600 is the host computer; 700 is the light source; 800 is the winding mechanism; 810 is the winding roller; 10 is the sealing tape; 90 is the battery cell; 91 is the liquid injection port. Detailed implementation manners
[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.
[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is 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 thus should not be construed as a limitation to the present invention.
[0027] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and the second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence of the indicated technical features.
[0028] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.
[0029] Please refer to Figures 1 to 4 together, and now a sealing device for sealing the liquid injection port of a battery cell provided by an embodiment of the present invention will be described.
[0030] As Figure 1 shown, the sealing device of the embodiment of the present invention includes an unwinding mechanism 100, a film pulling mechanism 200, and a cutting mechanism 300;
[0031] The unwinding mechanism 100 includes an unwinding roller 110 and an adjusting roller 120; the unwinding tube is used to unwind the sealing tape 10, and the unwound sealing tape 10 can bypass the adjusting roller 120 to output the sealing tape 10.
[0032] The film pulling mechanism 200 includes a film pulling rod 210; the sealing tape 10 is wound around the outside of the adjusting roller 120 and is output to the film pulling rod 210; the film pulling rod 210 can approach or move away from the adjusting roller 120, so that the film pulling rod 210 can drive the sealing tape 10 to move.
[0033] The cutting mechanism 300 includes a cutting knife 310. Both the cutting knife 310 and the film pulling rod 210 are located on the same side of the adjusting roller 120. The cutting knife 310 is used to cut the sealing tape 10 between the battery cell 90 and the adjusting roller 120.
[0034] The adjusting roller 120 is used to cooperate with the film pulling rod 210 to cover the liquid injection port 91 of the battery cell 90 with the sealing tape 10, and the film pulling rod 210 can also be used to press the sealing tape 10 against the liquid injection port 91 of the battery cell 90.
[0035] The unwinding mechanism 100 can carry the sealing tape 10 roll, and the sealing tape 10 roll can unwind the sealing tape 10. The sealing tape passes through the adjusting roller 120 and is conveyed to the film pulling rod 210; the film pulling rod 210 can move away from the adjusting roller 120, and the film pulling rod 210 can pull the sealing tape 10 away together, so as to have enough long sealing tape 10 to cover the liquid injection port 91 of the battery cell 90.
[0036] During use, the unwinding mechanism 100 unwinds the sealing tape 10 through the adjusting roller 120 to the film pulling rod 210. Subsequently, the film pulling rod 210 moves away from the adjusting roller 120 to increase the distance between the film pulling rod 210 and the adjusting roller 120, thereby increasing the length of the sealing tape 10 between the film pulling rod 210 and the adjusting roller 120; then the film pulling rod 210 moves, and the film pulling rod 210 approaches the battery cell 90, so that the film pulling rod 210 cooperates with the adjusting roller 120 to cover the liquid injection port 91 of the battery cell 90 with the sealing tape 10 to achieve the purpose of preliminary sealing; finally, the film pulling rod 210 approaches the adjusting roller 120, and the film pulling rod 210 presses the sealing tape 10 against the liquid injection port 91 of the battery cell 90 to ensure that the sealing tape 10 can seal the liquid injection port 91 of the battery cell 90 to achieve the purpose of sealing the battery cell 90. When the liquid injection port 91 of the battery cell 90 is sealed, the cutting knife 310 of the cutting mechanism 300 cuts the sealing tape 10 between the battery cell 90 and the adjusting roller 120, so that the sealing tape 10 of the adjusting roller 120 is separated from the battery cell 90, which is convenient for removing the sealed battery cell 90.
[0037] The sealing device of this embodiment uses the film pulling rod 210 and the adjusting roller 120 to cooperate to cover the liquid injection port 91 of the battery cell 90 with the sealing tape 10, and uses the film pulling rod 210 to press the sealing tape 10 against the liquid injection port 91 of the battery cell 90 to achieve the purpose of sealing the battery cell 90. Therefore, in the process of sealing the liquid injection port 91 of the battery cell 90, there is no need to use rubber sealing nails to seal the liquid injection port 91, so there will be no technical problems such as incorrect nail insertion positions or missed nail insertions, ensuring the sealing quality of the liquid injection port 91 of the battery cell 90; moreover, compared with rubber sealing nails, the cost of the sealing tape 10 is lower and it is easier to obtain, so as to reduce the sealing cost of the battery cell 90.
[0038] In some embodiments of the present invention, referring to Figure 1 and Figure 2 , it further includes a battery cell placement station 400; the sealing device has a first direction X, and the battery cell placement station 400 is used to place a plurality of the battery cells 90 so that the liquid injection ports 91 of the plurality of battery cells 90 are arranged along the first direction X; the adjusting roller 120, the cutting knife 310, and the battery cell placement station 400 are arranged along the first direction X; the film pulling rod 210 moves closer to or away from the adjusting roller 120 along the first direction X. Among them, the film pulling rod 210 is located above the battery cell placement station 400, and a plurality of battery cells 90 are placed on the battery cell placement station 400, and the liquid injection ports 91 of the battery cells 90 face upward. Then, when the film pulling rod 210 moves in a direction away from the adjusting roller 120, the film pulling rod 210 stretches the sealing tape 10 so that the sealing tape 10 is located above the liquid injection port 91 of the battery cell 90, and the length of the sealing tape 10 output from the adjusting roller 120 to the film pulling rod 210 is greater than the total length after the plurality of battery cells 90 are arranged and placed, so that the sealing tape 10 can cover the liquid injection port 91 of the battery cell 90; then the film pulling rod 210 moves downward, and the film pulling rod 210 drives the sealing tape 10 to cover the liquid injection port 91 of the battery cell 90 to achieve the purpose of preliminary sealing. Finally, the film pulling rod 210 moves closer to the adjusting roller 120, and the film pulling rod 210 presses the sealing tape 10 against the liquid injection port 91 to ensure that the sealing tape 10 can seal the liquid injection port 91 of the battery cell 90 to achieve the purpose of sealing the battery cell 90. Among them, the cutting knife 310 is located at a position between the battery cell placement station 400 and the adjusting roller 120, so that the cutting knife 310 can cut off the sealing tape 10 to facilitate taking away the battery cell 90 with the liquid injection port 91 sealed from the battery cell placement station 400.
[0039] The specific working process is as follows: The unwinding mechanism 100 unwinds the sealing tape 10 to the adjusting roller 120, and the sealing tape 10 is output from the adjusting roller 120 to the film pulling rod 210; a plurality of battery cells 90 with liquid injection ports 91 to be sealed are placed on the battery cell placement station 400, and the liquid injection ports 91 of the battery cells 90 are arranged along the first direction X; then the film pulling rod 210 moves the sealing tape 10 away from the adjusting roller 120 along the first direction X, the film pulling rod 210 drives the sealing tape 10 to the side of the battery cell 90 away from the adjusting roller 120, and then the film pulling rod 210 moves downward to cover the sealing tape 10 on the liquid injection ports 91 of the battery cell 90 to achieve the purpose of preliminary sealing; at this time, the film pulling rod 210 can adhere the end of the sealing tape 10 to the side of the battery cell 90 away from the adjusting roller 120, and then the film pulling rod 210 moves closer to the adjusting roller 120, and the film pulling rod 210 presses the sealing tape 10 against the liquid injection ports 91 of the battery cell 90 to ensure that the sealing tape 10 can seal the liquid injection ports 91 of the battery cell 90 to achieve the purpose of sealing the battery cell 90; finally, the cutting knife 310 cuts off the sealing tape 10 between the adjusting roller 120 and the battery cell placement station 400 to complete an operation of sealing the battery cell 90.
[0040] In some embodiments, the adjusting roller 120 can move up and down and can move up and down together with the film pulling rod 210 to cover the sealing tape 10 on the liquid injection ports 91 of the battery cell 90 from top to bottom.
[0041] In some embodiments of the present invention, referring to Figure 1 , it further includes: a vision lens 500 and a host computer 600; the vision lens 500 is located above the battery cell placement station 400, the host computer 600 is signal-connected to the vision lens 500, and the vision lens 500 is used to obtain information on the liquid injection ports 91 of the battery cells 90 on the battery cell placement station 400. The vision lens 500 is used to photograph the liquid injection ports 91 of the battery cells 90 on the battery cell placement station 400 to transmit signals to the host computer 600, and the host computer 600 determines whether the liquid injection ports 91 of the plurality of battery cells 90 are arranged along the first direction X. After the host computer 600 determines that the liquid injection ports 91 of the plurality of battery cells 90 are arranged along the first direction X, the film pulling rod 210 will start the sealing process to seal the liquid injection ports 91 of the battery cells 90. Among them, the host computer 600 can be a controller or a computer or other devices that can perform logical operations to cooperate with the vision lens 500 to judge the arrangement direction of the liquid injection ports 91 of the battery cells 90.
[0042] In some embodiments of the present invention, referring to Figure 1, further comprising: a supplementary light; the supplementary light is located on a side of the film pulling rod 210 away from the battery cell placing station 400, and the supplementary light is used to irradiate light toward the battery cell placing station 400. That is, the supplementary light supplements light for the battery cell placing station 400, enabling the vision lens 500 to take better pictures, so that the host computer 600 can cooperate with the vision lens 500 to judge the arrangement direction of the liquid injection ports 91 of multiple battery cells 90.
[0043] In some embodiments of the present invention, referring to Figure 3 and Figure 4 , the film pulling rod 210 is in a spindle convex roller shape. The outer side surface of the spindle convex roller-shaped film pulling rod 210 is adapted to the shape of the liquid injection port 91 of the battery cell 90, and can better press the sealing tape 10 toward the liquid injection port 91 of the battery cell 90 to ensure the sealing performance. Specifically, the convexity of the film pulling rod 210 is 1 mm to 3 mm, and the shape of the general liquid injection port 91 of the battery cell 90 can be adapted to the spindle convex roller with a convexity of 1 mm to 3 mm. Therefore, by setting the convexity of the film pulling rod 210 to 1 mm to 3 mm, the film pulling rod 210 can better press the sealing tape 10 toward the liquid injection port 91 of the battery cell 90.
[0044] In some embodiments of the present invention, referring to Figure 1 , the film pulling mechanism 200 includes a film pulling frame 220; both ends of the film pulling rod 210 are rotatably connected to the film pulling frame 220. The film pulling frame 220 is used to drive the film pulling rod 210 to move, and the film pulling frame 220 can be driven to move by a multi-axis motion mechanism, so that the film pulling rod 210 can move along the first direction X and can move up and down.
[0045] In some embodiments of the present invention, referring to Figure 3 and Figure 4 , on the above basis, in order to facilitate the rotation of the film pulling rod 210, rotating mounting holes 211 are provided at both ends of the film pulling rod 210, and the film pulling frame 220 is provided with a rotating shaft extending into the rotating mounting holes 211. That is, the film pulling rod 210 can rotate around the rotating shaft, ensuring that it can roll during the movement, and enabling the film pulling rod 210 to better press the sealing tape 10 toward the liquid injection port 91 of the battery cell 90.
[0046] In some embodiments of the present invention, referring to Figure 1 , the unwinding mechanism 100 further comprises: a guide roller 130 and a positioning roller 140; the guide roller 130 and the positioning roller 140 are arranged between the adjusting roller 120 and the unwinding roller 110, and the sealing tape 10 after unwinding from the unwinding roller 110 is wound around the guide roller 130, the positioning roller 140, and the adjusting roller 120. That is, multiple rollers are used to adjust the tension of the sealing tape 10 after unwinding, so as to better tension the sealing tape 10, facilitate the unwinding of the sealing tape 10, and avoid wrinkling of the sealing tape 10.
[0047] In some embodiments of the present utility model, referring to Figure 1 , it further includes a winding mechanism 800; the winding mechanism 800 includes a winding roller 810, and the winding roller 810 is used for winding the release paper of the sealing tape 10. There is release paper on the outer side of the sealing tape 10. The winding roller 810 is located below the unwinding mechanism 100. After the release paper is separated from the sealing tape 10, the release paper can be collected by the winding roller 810 for the recycling of the release paper.
[0048] In summary, the sealing device of this embodiment uses the film pulling rod 210 and the adjusting roller 120 to cooperate to cover the liquid injection port 91 of the battery cell 90 with the sealing tape 10, and uses the film pulling rod 210 to press the sealing tape 10 against the liquid injection port 91 of the battery cell 90 to achieve the purpose of sealing the battery cell 90. Therefore, in the process of sealing the liquid injection port 91 of the battery cell 90, there is no need to use a rubber sealing nail to seal the liquid injection port 91, so that technical problems such as incorrect insertion position of the nail and omission of nail insertion will not occur, ensuring the sealing quality of the liquid injection port 91 of the battery cell 90; and, compared with the rubber sealing nail, the cost of the sealing tape 10 is lower and it is easier to obtain, so as to reduce the sealing cost of the battery cell 90.
[0049] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present utility model.
Claims
1. A sealing device for sealing a liquid injection port of a battery cell, characterized in that: include: An unwinding mechanism (100) comprises an unwinding roller (110) and an adjusting roller (120); the unwinding roller (110) is used to unwind a sealing tape roll; The film-pulling mechanism (200) comprises a film-pulling rod (210); the sealing tape is wound around the outside of the adjusting roller (120) and output to the film-pulling rod (210); the film-pulling rod (210) can be close to or away from the adjusting roller (120); A cutting mechanism (300) comprising a cutting knife (310); the cutting knife (310) and the film-pulling rod (210) are located on the same side of the adjusting roller (120); the cutting knife (310) is used to cut the sealing tape between the battery cell and the adjusting roller (120); The regulating roller (120) is used to cooperate with the film-pulling rod (210) to cover the liquid injection port of the battery cell with the sealing tape, and the film-pulling rod (210) is used to press the sealing tape toward the liquid injection port of the battery cell.
2. The sealing device according to claim 1, characterized in that: It also includes a battery cell placement station (400); the sealing device has a first direction (X), and the battery cell placement station (400) is used to place a plurality of the battery cells so that the injection ports of the plurality of the battery cells are arranged along the first direction (X); the adjusting roller (120), the cutting knife (310), and the battery cell placement station (400) are arranged along the first direction (X); the film pulling rod (210) approaches or moves away from the adjusting roller (120) along the first direction (X).
3. The sealing device according to claim 2, characterized in that: Also includes: A visual lens (500) and a host computer (600); the visual lens (500) is located above the battery cell placement station (400), the host computer (600) is connected to the visual lens (500) by signal, and the visual lens (500) is used to obtain information about the liquid injection port of the battery cell on the battery cell placement station (400).
4. The sealing device according to claim 3, characterized in that: Also includes: A fill light (700); the fill light (700) is located on a side of the film-pulling rod (210) away from the battery cell placement station (400), and the fill light (700) is used to irradiate light toward the battery cell placement station (400).
5. The sealing device according to claim 1, characterized in that: The film-drawing rod (210) is in the shape of a spindle convex roller.
6. The sealing device according to claim 5, characterized in that: The convexity of the film-pulling rod (210) is 1 mm to 3 mm.
7. The sealing device according to claim 1, characterized in that: The film-pulling mechanism (200) comprises a film-pulling frame (220); both ends of the film-pulling rod (210) are rotatably connected to the film-pulling frame (220).
8. The sealing device according to claim 7, characterized in that: Both ends of the film-pulling rod (210) are provided with rotational mounting holes (211), and the film-pulling frame (220) is provided with a rotating shaft extending into the rotational mounting holes (211).
9. The sealing device according to claim 1, characterized in that: The unwinding mechanism (100) further comprises: a passing roller (130) and a positioning roller (140); the passing roller (130) and the positioning roller (140) are arranged between the adjusting roller (120) and the unwinding roller (110); and the sealing tape unwound by the unwinding roller (110) is wound around the passing roller (130), the positioning roller (140) and the adjusting roller (120).
10. The sealing device according to claim 1, characterized in that: It also includes a winding mechanism (800); the winding mechanism (800) includes a winding roller (810), and the winding roller (810) is used to wind up the release paper of the sealing tape.