A tearing device for soft package battery cell sealant melt

Abstract

A tearing device for the sealing adhesive of soft-pack battery cells includes: two tearing motors, each with a tearing shaft, both shafts having a fixing structure to secure the seal, and the two shafts having the same diameter and outputting the same rotational speed but in opposite directions. This invention replaces manual tearing, improving the tearing effect of the sealing adhesive compared to existing technologies, reducing the possibility of damaged adhesive or substandard results, minimizing occupational health risks, and effectively adapting to the needs of high-speed production lines.

Description

Technical Field

[0001] This utility model relates to a tearing device for the sealing adhesive of soft-pack battery cells, belonging to the field of soft-pack battery cell sealing quality testing. Background Technology

[0002] Soft-pack battery cells use aluminum-plastic film as packaging material, and their encapsulation process mainly relies on heat sealing technology. In this process, the PP layer of the aluminum-plastic film melts and fuses under the heating of the sealing head. Specifically, under specific temperature, pressure and time conditions, the two PP adhesive layers gradually fuse together to form a stable encapsulation structure.

[0003] To ensure reliable packaging, it is necessary to check the heat-melting effect of the molten adhesive (the structure formed by the fusion of two layers of PP adhesive). This process is usually confirmed by tearing open the seal and observing whether the molten adhesive is evenly distributed and milky white. If the molten adhesive is uniform and milky white, it indicates that the packaging parameters are set reasonably and the heat-melting effect is good.

[0004] In existing technologies, manual tearing is often used, which has certain drawbacks: due to the uneven force applied when tearing the seal by hand, the tearing effect of the molten adhesive is inconsistent or the molten adhesive is damaged, which cannot meet the needs of high-speed production lines and increases occupational health risks such as finger pain. Utility Model Content

[0005] To address the shortcomings of existing technologies, one of the objectives of this application is to provide a tearing device for the sealing adhesive of soft-pack battery cells, which improves the tearing effect of the adhesive, reduces the occurrence of damaged adhesive or unqualified results, reduces occupational health risks, and effectively adapts to the needs of high-speed production lines.

[0006] A tearing device for the sealing adhesive of a soft-pack battery cell, comprising:

[0007] Two tearing motors, each with a tearing shaft, are provided with a fixing structure to secure the seal. The two tearing shafts have the same diameter and are used to output the same speed but opposite directions.

[0008] Preferably, the fixing structure includes double-sided adhesive.

[0009] Preferably, the fixing structure includes a pressure plate and a connector for connecting the pressure plate to the tearing shaft, the pressure plate having a pressing surface for pressing the seal onto the corresponding tearing shaft.

[0010] Preferably, the pressing surface is further provided with a plurality of pressing parts, and the tearing shaft is provided with a mating opening that cooperates with the pressing parts.

[0011] Preferably, the connector is one of a bolt or a screw.

[0012] Preferably, the tearing shaft is in a horizontal position.

[0013] Preferably, it further includes a spring clip for clamping to the bottom of the seal, a suspension block suspended on the spring clip, a stop for blocking the spring clip on the upward path of the spring clip, the stop having a channel for the seal to pass through, and a cutting blade assembly for cutting the seal surface on the stop. The cutting blade assembly includes a cutting blade holder, a cutting blade slidably disposed on the cutting blade holder, and a spring for pressing the cutting blade against the seal surface.

[0014] Preferably, it also includes a master control circuit, in which two tearing motors are connected in parallel, and the master control circuit is also provided with a master control switch.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. This utility model replaces the manual tearing method, improves the tearing effect of melt adhesive compared with the existing technology, reduces the situation of melt adhesive being torn or the effect being unqualified, reduces occupational health risks, and effectively adapts to the needs of high-speed production lines.

[0017] 2: This utility model uses a spring clip with a suspension weight to hold the seal at the bottom. At the same time, a stop is set on the rising path of the spring clip to block the spring clip, and a cutting blade assembly is set on the stop to cut the seal surface. This allows the seal surface to slide out or be cut with a mark during the seal rising process, so that the tearing shaft can tear the seal with a smaller torque range. Therefore, the entire device consumes less power and saves more energy. Attached Figure Description

[0018] Figure 1 This is a simplified schematic diagram of the first type of tearing device;

[0019] Figure 2 To create a gap in the seal;

[0020] Figure 3 This is a simplified schematic diagram of the second type of tearing device;

[0021] Figure 4 This is a diagram showing the connection between the fixing structure and the tearing shaft in the second type of tearing device.

[0022] Figure 5 This is a schematic diagram of the clamping of the pressure plate;

[0023] Figure 6 This is a simplified schematic diagram of the third type of tearing device;

[0024] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0025] Figure 8 This is a simplified structural diagram of the fourth type of tearing device. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Example:

[0027] A tearing device for the sealing adhesive of a soft-pack battery cell, such as Figure 1 As shown, the device includes two tearing motors 1, each mounted on a mounting platform 0. Each motor 1 has a tearing shaft 11, and both shafts 11 are equipped with a fixing structure 2 to secure the seal. The fixing structures 2 are staggered in their fixing positions to the seal. The fixing structures 2 use double-sided adhesive. Specifically, one side of the double-sided adhesive is applied to the outer circumference of the corresponding tearing shaft 11, and the other side is applied to the seal, thus fixing the seal to the outer circumference of the corresponding tearing shaft 11. Of course, a more reliable method would be... Figure 2 As shown, a tear notch is pre-set on the seal, and two fixing structures 2, i.e., two double-sided adhesives, are respectively connected to the parts (parts A1 and A2) on both sides of the tear notch on the seal. The two tearing shafts 11 are set to have the same diameter, and the two tearing shafts 11 output the same magnitude but opposite directions of rotation speed, so that the molten adhesive of the seal is torn evenly and stably. This tearing device replaces the manual tearing method, improves the tearing effect of molten adhesive, reduces the situation of molten adhesive being torn or the effect being unqualified, reduces occupational health risks, and effectively adapts to the needs of high-speed production lines.

[0028] Another fixed structure 2, see Figure 3-4 As shown, it includes a pressure plate 21 and a connector 22 for connecting the pressure plate 21 to the tearing shaft 11. The connector 22 is a fastener, such as a bolt or screw, which secures the pressure plate 21 to the tearing shaft 11. The pressure plate 21 has a pressing surface 211 that presses the corresponding part of the seal against the tearing shaft 11, thereby fixing the seal. The pressing surface 211 is preferably an arc surface, which matches the outer circumference of the tearing shaft 11. Compared to a flat pressing surface, an arc-shaped pressing surface can press the seal over a larger area, resulting in a better pressing effect and thus a better fixing effect on the seal. Figure 5As shown, the pressing surface 211 is also provided with multiple pressing parts 212, and the tearing shaft 11 is provided with a mating port 111 that cooperates with the pressing parts 212. This way of the pressing parts 212 and the mating port 111 cooperating with each other further increases the area of ​​the pressing plate 21 pressing on the seal, thereby further improving the pressing effect and thus further improving the fixing effect of the seal.

[0029] Regardless of the type of tearing device mentioned above, the tearing shaft 11 is always horizontal. Under this premise, the first type of tearing device (i.e., the fixing structure uses double-sided adhesive) requires further structural design, such as... Figure 6-7 As shown, the tearing device also includes a spring clip 3 for clamping to the bottom of the seal. A weight 4 is suspended from the spring clip 3. Under the combined action of the spring clip 3 and the weight 4, the entire seal is taut and is driven upwards by the rotation of the two tearing shafts 11. A stop 5 is provided along the upward path of the spring clip 3 to block it. The stop 5 is fixedly connected to the mounting platform 0 and has a channel 51 for the seal to pass through. The stop 5 also has a cutting blade assembly 6 for cutting the seal surface. The cutting blade assembly 6 specifically… The device includes a slicing holder 61, a slicing blade 62 slidably mounted on the slicing holder 61, and a spring 63 for pressing the slicing blade 62 against the seal surface. This design allows the seal surface to be slid out or cut by the slicing blade 62 during the seal's ascent. At this point, the tearing shaft 11 can tear the seal with a smaller torque range, thus reducing the overall power consumption and saving energy. When the spring clip 3 moves with the seal to the position blocked by the stop 5, as the tearing shaft 11 continues to rotate and drive the seal upward, the spring clip 3 falls off the seal. A second type of tearing device (i.e., a fixing structure using a pressure plate) is also available. Figure 8 As shown, this design is also adopted.

[0030] Regardless of the type of tearing device mentioned above, they are all controlled by a master control circuit. Two tearing motors 1 are connected in parallel in the master control circuit. The master control circuit is also equipped with a master control switch. When the master control switch is turned on, both tearing motors 1 work simultaneously to ensure the synchronicity of the two tearing shafts 11.

[0031] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A soft package battery cell sealant melt glue tearing device, characterized in that, Include: Two tearing motors (1), each of the two tearing motors (1) has a tearing shaft (11), both tearing shafts (11) are equipped with a fixing structure (2) to fix the seal, and the two tearing shafts (11) have the same diameter and are used to output the same speed but opposite directions.

2. The soft package battery cell sealant tearing device of claim 1, wherein, The fixing structure (2) includes double-sided adhesive.

3. The soft package cell sealant tearing device of claim 1, wherein, The fixing structure (2) includes a pressure plate (21) and a connector (22) connecting the pressure plate (21) to the tear-off shaft (11). The pressure plate (21) has a pressing surface (211) for pressing the seal against the corresponding tear-off shaft (11).

4. The soft package cell sealant tearing device of claim 3, wherein, The pressing surface (211) is also provided with a plurality of pressing parts (212), and the tearing shaft (11) is provided with a mating port (111) that mates with the pressing parts (212).

5. The soft package cell sealant tearing device of claim 3, wherein, The connector (22) is one of bolts or screws.

6. The soft package cell sealant tearing device of claim 1, wherein, The tearing shaft (11) is in a horizontal position.

7. The soft package cell sealant tearing device of claim 1, wherein, It also includes a spring clip (3) for clamping to the bottom of the seal, a suspension block (4) suspended on the spring clip (3), a stop (5) for blocking the spring clip (3) on the upward path of the spring clip (3), a channel (51) for the seal to pass through on the stop (5), and a cutting blade assembly (6) for cutting the seal surface on the stop (5). The cutting blade assembly (6) includes a cutting blade holder (61), a cutting blade (62) slidably disposed on the cutting blade holder (61), and a spring (63) for making the cutting blade (62) abut against the seal surface.

8. The soft package cell sealant tearing device of claim 1, wherein, It also includes a master control circuit, in which two tearing motors (1) are connected in parallel, and a master control switch is provided in the master control circuit.

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