Battery sealing module, sealing system and production line

Abstract

The invention discloses a battery sealing module, a sealing system and a production line, and belongs to the technical field of battery manufacturing, and the battery sealing module is used for compressing and sealing a neck part of a battery and comprises a clamping piece and a pressing head. An accommodating hole for accommodating a battery is formed in the clamping piece; a straight edge part extending in the axis direction of the containing hole is arranged at the end of the containing hole and used for being arranged on the peripheral side of the neck opening part in a surrounding mode. A pressing groove is formed in the end of the pressing head, and an arc-shaped part is arranged in the pressing groove and used for being attached to and compressing the neck opening part. According to the battery sealing module provided by the embodiment of the invention, through the technical scheme, the straight edge part is arranged at the clamping piece to limit the radial deformation of the battery steel shell, and only the arc-shaped pressing groove is formed in the end part of the pressure head, so that the friction force is small in the process that the pressure head extrudes the neck part of the battery, and the probability that the pressure head scratches the steel shell is reduced.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a battery sealing module, sealing system and production line. Background Technology

[0002] In battery manufacturing technologies, during battery sealing, a pressure head presses down and squeezes the neck of the battery's steel casing to achieve a seal. However, during this process, the pressure head can easily scratch the steel casing, affecting the yield rate. Summary of the Invention

[0003] This application provides a battery sealing module, sealing system, and production line, which reduces the probability of scratches on the neck of the battery steel casing and increases the yield rate, thereby at least partially solving the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a battery sealing module is provided for compressing and sealing the neck portion of a battery, comprising a clamping member and a pressing head. The clamping member has an internal receiving hole for accommodating the battery; the end of the receiving hole has a straight edge extending along the axial direction of the receiving hole, the straight edge being used to surround the periphery of the neck portion. The end of the pressing head has a pressing groove, within which an arc-shaped portion is provided for fitting and compressing the neck portion.

[0005] Optionally, the clamping element includes a protruding edge disposed within a receiving hole for engaging with a groove in the battery.

[0006] Optionally, the straight edge portion has a first surface for fitting with the straight edge of the neck portion, the first surface having a first dimension L1 along the axial direction of the receiving hole, and the straight edge of the neck portion having a second dimension L2, satisfying L1 < L2.

[0007] Optionally, L1 ≥ L2 / 2 must be satisfied.

[0008] Optionally, the pressing groove further includes a transition section that connects to the arc-shaped section, wherein the first depth of the transition section relative to the end face of the pressing head is greater than or equal to the second depth of the arc-shaped section relative to the end face of the pressing head.

[0009] Optionally, the pressing groove further includes a protrusion that connects to the arcuate portion, wherein the third depth of the protrusion relative to the end face of the pressing head is less than the fourth depth of the arcuate portion relative to the end face of the pressing head.

[0010] Optionally, the clamping component includes multiple clamping blocks that are mated together to form a receiving hole. The battery sealing module also includes a guide sleeve, in which multiple clamping blocks are movably disposed, and the outer side of each clamping block is in contact with the inner wall of the guide sleeve.

[0011] Optionally, the inner diameter of the straight edge is 98% to 100% of the outer diameter of the battery.

[0012] According to a second aspect of this application, a battery sealing system is provided, including a battery sealing module as described above, and a squat sealing module. The squat sealing module includes a carrier, a squat sleeve, and a squat sealing head. The carrier is used to carry the battery; the squat sleeve has a retaining hole for surrounding the outer periphery of the battery when the squat sleeve is pressed down; the squat sealing head is movably disposed within the retaining hole and is configured to abut against the compression neck portion when the squat sleeve is pressed down.

[0013] Optionally, the squatting sleeve includes a limiting part disposed in the retaining hole, the limiting part being configured to abut against the squatting head when the squatting sleeve is pressed down, so as to limit the squatting head.

[0014] Optionally, it also includes an elastic element, which is located on the side of the squatting head away from the carrier and abuts against the squatting sleeve.

[0015] Optionally, the battery sealing module includes multiple modules, including at least one first battery sealing module and at least one second battery sealing module. The first battery sealing module has a pressing groove including a transition portion connected to an arc-shaped portion. The first depth of the transition portion relative to the end face of the pressing head is greater than or equal to the second depth of the arc-shaped portion relative to the end face of the pressing head. The second battery sealing module has a pressing groove including a protrusion connected to the arc-shaped portion. The third depth of the protrusion relative to the end face of the pressing head is less than the fourth depth of the arc-shaped portion relative to the end face of the pressing head. The second depth is greater than the fourth depth.

[0016] Optionally, the inner diameter of the hole is maintained at 99% to 101% of the outer diameter of the battery.

[0017] According to a third aspect of this application, a production line is also provided, including the battery sealing module as described above.

[0018] In the battery sealing module of this application embodiment, by using the above technical solution, a straight edge is provided at the clamping part to restrict the radial deformation of the battery steel shell, and only an arc-shaped pressing groove is provided at the end of the pressing head, so that the friction force is small during the pressing head pressing the neck of the battery, reducing the probability of the pressing head scratching the steel shell.

[0019] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0021] Figure 1 This is a cross-sectional schematic diagram of the first battery sealing module provided in an exemplary embodiment of this disclosure; Figure 2 yes Figure 1 A magnified view of a section at point E in the middle; Figure 3 yes Figure 2 Dimensional diagram; Figure 4 This is a cross-sectional schematic diagram of the second battery sealing module provided in an exemplary embodiment of this disclosure; Figure 5 yes Figure 4 A magnified view of a section at point F in the middle; Figure 6 yes Figure 5 Dimensional diagram; Figure 7 This is a schematic diagram of the clamping member provided in an exemplary embodiment of this disclosure; Figure 8 This is a schematic diagram of the guide sleeve provided in an exemplary embodiment of this disclosure; Figure 9 This is a cross-sectional schematic diagram of the squatting sealing module provided in an exemplary embodiment of this disclosure.

[0022] Explanation of reference numerals in the attached figures: 1. Clamping component; 11. Receiving hole; 111. Straight edge; 1111. First surface; 12. Protruding edge; 13. Clamping block; 2. Press head; 21. Pressing groove; 211. Arc-shaped part; 212. Transition part; 213. Protrusion; 22. Guide sleeve; 3. Battery; 31. Neck part; 32. Roll groove; 33. Straight edge; 4. Bearing component; 5. Squatted sleeve; 51. Holding hole; 52. Limiting part; 6. Squatted head; 7. Elastic component; X, Axial direction; A, First depth; B, Second depth; C, Third depth; D, Fourth depth. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0024] In battery manufacturing technologies, when sealing the battery 3, the pressure head 2 presses down and squeezes the neck 31 of the steel casing of the battery 3 to achieve sealing. However, during this process, the pressure head 2 is prone to scratching the steel casing, affecting the yield rate.

[0025] In view of this, embodiments of this application provide a battery sealing module, which aims to overcome at least one of the above-mentioned technical problems.

[0026] Please see Figures 1 to 6 The battery sealing module provided in this application includes a clamping member 1 and a pressing head 2. The clamping member 1 has a receiving hole 11 for accommodating a battery 3; the end of the receiving hole 11 has a straight edge 111 extending along the axial direction of the receiving hole 11, and the straight edge 111 is used to surround the periphery of the neck portion 31. The end of the pressing head 2 has a pressing groove 21, and the pressing groove 21 has an arc-shaped portion 211, which is used to fit and compress the neck portion 31.

[0027] A straight edge 111 is designed at the clamping part 1 to limit the radial deformation of the steel shell of the battery 3, while only an arc-shaped pressing groove 21 is provided at the end of the pressing head 2. This design effectively reduces the friction between the pressing head 2 and the neck 31 of the battery 3 when the pressing head 2 is pressing, due to the arc-shaped part 211, thereby reducing the probability of the pressing head 2 scratching the steel shell and significantly improving the yield.

[0028] Please see Figure 2 , Figure 5 In some embodiments, the clamping member 1 includes a protruding edge 12, which is disposed in the receiving hole 11. The outer contour of the protruding edge 12 is adapted to the groove 32 on the battery 3 and is used to engage with the groove 32 of the battery 3. When the pressure head 2 presses down to compress and seal the neck portion 31, the protruding edge 12 can abut against the groove 32 of the battery 3, restricting the displacement of the battery 3 in the axial direction X, making the sealing process more stable.

[0029] Please see Figure 3 , Figure 6In some embodiments, the straight edge portion 111 has a first surface 1111 for fitting with the straight edge 33 of the neck portion 31. Along the axial direction X of the receiving hole 11, the first surface 1111 has a first dimension L1, and the straight edge 33 of the neck portion 31 has a second dimension L2, satisfying L1 < L2. This allows the straight edge portion 111 to restrict the neck portion 31 from deforming outward or inward, thus forming the lower end of the straight edge 33 of the neck portion 31. On the other hand, due to the presence of the arc-shaped portion 211 on the pressure head 2 during the sealing process, the arc-shaped portion 211 does not have a vertical edge that could cause scratches. Therefore, the pressure head 2 and the clamping member 1 cannot make complete contact, resulting in a gap. This gap prevents the arc-shaped portion 211 from completely fitting the straight edge 33 of the neck portion 31 corresponding to the straight edge portion 111 during compression, thus failing to effectively compress the corresponding position of the neck portion 31 to cause deformation. By designing L1 < L2, the influence of the gap during the steel shell forming process is utilized, allowing the steel shell to form the straight edge 33 of the neck 31 according to the design dimensions.

[0030] Furthermore, by satisfying L1≥L2 / 2, most of the straight edges 33 on the clamping member 1 can be tightened by the straight edge portion 111, and most of the straight edges 33 on the neck portion 31 of the steel shell can be compressed and sealed under the constraint of the straight edge portion 111. By designing L1≥L2 / 2, only a small portion of the straight edges 33 is affected by the gap, making the process of forming the straight edges 33 for sealing more stable.

[0031] The second dimension L2 of the neck portion 31 is determined based on the size design of the battery 3, and the final dimension is determined by the sealing process. The first dimension L1 of the first surface 1111 is also determined by the design. Specifically, the sealing extrusion process can be simulated in simulation software to determine the designed size of the first dimension L1, and the final size is determined by machining. The actual size of the second dimension L2 can be measured using a measuring device such as an image measuring instrument, and the actual size of the first dimension L1 can be measured using a measuring device such as a coordinate measuring machine.

[0032] Please see Figure 3 , Figure 4In some embodiments, the pressing groove 21 further includes a transition portion 212, which connects to the arc-shaped portion 211. The first depth A of the transition portion 212 relative to the end face of the pressing head 2 is greater than or equal to the second depth B of the arc-shaped portion 211 relative to the end face of the pressing head 2. In this embodiment, the first depth A is equal to the second depth B as an example. The transition portion 212 is a straight surface flush with the deepest point of the arc-shaped portion 211. Through the transition portion 212, the deformation of the neck portion 31 end is smaller during the compression process of the pressing head 2 on the neck portion 31, effectively preventing stress concentration and defects such as cracks. At the same time, due to the small amount of deformation, the friction between the pressing groove 21 and the neck portion 31 is small, further preventing scratches on the steel shell. It can be used in the current battery sealing technology field.

[0033] Please see Figure 5 , Figure 6 In some other embodiments, the pressing groove 21 further includes a protrusion 213 connected to the arcuate portion 211. The third depth C of the protrusion 213 relative to the end face of the pressing head 2 is less than the fourth depth D of the arcuate portion 211 relative to the end face of the pressing head 2. The protrusion 213 is designed to allow for greater compression of the neck portion 31 by the pressing groove 21. This allows for direct compression sealing of softer materials without defects, even with larger single-time deformation. For harder materials, such as the steel-cased battery in this embodiment, it can also be used in conjunction with the aforementioned battery sealing module for one-time sealing, enabling secondary sealing in the current battery sealing technology field. While the single-time compression of the steel casing is limited, preventing defects, the pressing groove 21 exerts less friction on the neck portion 31, further preventing scratches on the steel casing.

[0034] Please see Figure 7 , Figure 8 In some embodiments, the clamping member 1 includes multiple clamping blocks 13, which are mated together to form a receiving hole 11. In this embodiment, three clamping blocks 13 constitute the clamping member 1. The battery sealing module also includes a guide sleeve 22, in which the three clamping blocks 13 are movably disposed, and the outer side of each clamping block 13 is in contact with the inner wall of the guide sleeve 22. Before the pressure head 2 compresses the neck portion 31, the guide sleeve 22 tightens each clamping block 13, so that the battery 3 can be well fixed and centered, facilitating subsequent compression and sealing of the battery 3.

[0035] Guide slopes can be provided individually or simultaneously on the clamping block 13 or the guide sleeve 22. When the guide sleeve 22 moves downward, the clamping block 13 can be tightened automatically and the battery 3 can be centered by the action of the guide slope. As a result, when the battery 3 is installed on the clamping member 1, it is not required to install it tightly. It is sufficient to keep the battery 3 from falling off the clamping member 1.

[0036] In existing technologies, the battery casing is typically made of metal. However, during compression, stress can cause springback, resulting in the battery's outer diameter exceeding design limits and affecting yield. In some embodiments, the inner diameter of the straight edge 111 is designed to be 98% to 100% of the battery's outer diameter. This ensures that even if springback occurs after compression at the neck 31, the battery's outer diameter remains within the design range. In this embodiment, the battery is made of steel with a designed outer diameter of 21mm, while the required diameter in production is 21.00 ± 0.10mm. The inner diameter of the straight edge 111 on the clamping member 1 is designed to be 20.95mm, approximately 99.76% of the battery's designed outer diameter. Testing has shown that this effectively tightens the steel casing opening, preventing the steel casing from being scratched by the pressure head 2 during sealing. Furthermore, although springback occurs after sealing, the outer diameter after springback is approximately 21.00mm to 21.02mm, which is within the median and meets production requirements. In other embodiments, the inner diameter of the straight edge portion 111 can also be designed as any value or a range between any two values ​​of the outer diameter of the battery 3, which is 98%, 98.2%, 98.4%, 98.6%, 98.8%, 99.0%, 99.2%, 99.4%, 99.6%, 99.8%, or 100% of the actual production needs and material characteristics.

[0037] Accordingly, this application also provides a battery sealing system, including a sealing module and a battery sealing module as described in any of the foregoing embodiments. It is understood that this battery sealing system can possess all the technical features and effects of the aforementioned battery sealing module, which will not be elaborated upon here.

[0038] Please see Figure 9 The squat sealing module includes a carrier 4, a squat sealing sleeve 5, and a squat sealing head 6. The carrier 4 is used to support the battery 3 and can adopt a multi-lobed structure similar to the clamping component 1 in the battery sealing module, and can also adopt a similar guiding structure. The squat sealing sleeve 5 has a retaining hole 51, which is used to surround the outer periphery of the battery 3 when the squat sealing sleeve 5 is pressed down; the squat sealing head 6 is movably disposed in the retaining hole 51, and the squat sealing head 6 is configured to abut against the compression neck 31 when the squat sealing sleeve 5 is pressed down.

[0039] Before the neck portion 31 is compressed by the squatting sealing head 6, the squatting sealing sleeve 5 is fitted around the outer periphery of the battery 3 through the retaining hole 51. This can effectively prevent the corresponding part of the battery 3 from deforming during the squatting sealing process, prevent the outer diameter of the battery 3 from exceeding the limit, and thus improve the yield rate.

[0040] Please see Figure 9 In some embodiments, the squatting sleeve 5 includes a limiting part 52 disposed in the retaining hole 51. The limiting part 52 is configured to abut against the squatting head 6 when the squatting sleeve 5 is pressed down, so as to limit the squatting head 6 and make the compression amount more accurate during the squatting process.

[0041] Please see Figure 9In some embodiments, an elastic element 7 is also included. The elastic element 7 is located on the side of the squatting sealing head 6 away from the carrier 4 and abuts against the squatting sealing sleeve 5. After the squatting sealing is completed, the elastic element 7 can push the squatting sealing head 6 downward, thereby pushing out the sealed battery 3 for subsequent operations. In this embodiment, the elastic element 7 is a compression spring. The elastic element 7 makes the squatting sealing head 6 maintain the tendency to move outward from the squatting sealing sleeve 5. In the initial stage when the squatting sealing sleeve 5 begins to contact the neck 31, the squatting sealing head 6 does not compress the neck 31. When the squatting sealing sleeve 5 continues to move downward to cover the upper end of the battery 3, the squatting sealing head 6 is limited by the limiting part 52 and no longer moves upward relative to the squatting sealing sleeve 5, and begins to compress the neck 31 to squat and seal the battery 3.

[0042] In some embodiments, multiple battery sealing modules are provided, including at least one first battery sealing module and at least one second battery sealing module. The first battery sealing module has a pressing groove 21 including a transition portion 212 connected to an arc-shaped portion 211. The first depth A of the transition portion 212 relative to the end face of the pressing head 2 is greater than or equal to the second depth B of the arc-shaped portion 211 relative to the end face of the pressing head 2. The second battery sealing module has a pressing groove 21 including a protrusion 213 connected to the arc-shaped portion 211. The third depth C of the protrusion 213 relative to the end face of the pressing head 2 is less than the fourth depth D of the arc-shaped portion 211 relative to the end face of the pressing head 2. Since the second depth B is greater than the fourth depth D, during sealing, the first battery sealing module performs a first seal, then the second battery sealing module performs a second seal, and finally a final seal. This step-by-step sealing of the battery 3 reduces the amount of deformation of the battery casing in a single operation, avoids defects, prevents scratches, and improves the yield rate.

[0043] A common problem with sealing is that the outer diameter of the lower edge of the groove is too large. In some embodiments, the inner diameter of the retaining hole 51 is 99% to 101% of the designed outer diameter of the battery 3, so that the outer diameter of the sealed battery 3 is within the design range. In this embodiment, the battery 3 is made of steel with a designed outer diameter of 21mm, and the required diameter in production is 21.00±0.10mm. The inner diameter of the retaining hole 51 used in this embodiment is 21.05mm. After trial production, it can well meet the production needs, that is, avoid scratches while keeping the outer diameter within the limit. In other embodiments, the inner diameter of the retaining hole 51 can also be designed according to actual production needs and material characteristics, and can be any value or a range between any two values ​​of 99%, 99.2%, 99.4%, 99.6%, 99.8%, 100.0%, 100.2%, 100.4%, 100.6%, 100.8%, 101.0% of the outer diameter of the battery 3. It should be noted that since the squat sealing process is after the first and second sealing processes, the inner diameter of the retaining hole 51 should be set to be larger than the inner diameter of the straight edge 111. This is to prevent the inner diameter of the retaining hole 51 from being smaller than the outer diameter of the battery 3 produced in the previous process during the squat sealing process. Otherwise, the battery 3 will not be able to be smoothly installed in the carrier 4. Even if the installation is successful, the outer shell is easily scratched, which will affect the yield.

[0044] Embodiments of this application further provide a production line that includes the battery sealing module described in any of the foregoing embodiments. This means that the production line not only possesses all the technical features of the battery sealing module but also the technical effects it brings. Specifically, these technical features may include efficient processing capabilities for the battery sealing process, designs that improve sealing accuracy, and optimized use of materials. These features collectively ensure the quality and consistency of battery sealing.

[0045] The production line may further include the battery sealing system in the above embodiments, including a first battery sealing module for one sealing, a second battery sealing module for two sealing, and a squat sealing module for squat sealing.

[0046] A preliminary sealing process is used. The battery 3 is fed to the clamping member 1 of the first battery sealing module and held in place. The position of the clamping member 1 is adjusted so that the protruding edge 12 of the clamping member 1 corresponds to the groove 32 of the battery 3, ensuring that the battery 3 is stably fixed and thus ensuring the accuracy of the sealing position. Then, the driving mechanism drives the pressure head 2 to press the neck portion 31 of the battery 3 until the clamping member 1 abuts against the pressure head 2, completing the first pressing and sealing. At this time, the height of the neck portion 31 of the battery 3 should be compressed to 75% ± 10% of the original height to ensure a tight seal and avoid over-compression that may cause defects.

[0047] The second sealing step is used to reinforce the seal. The battery 3, after passing through the first sealing module, is then clamped by the clamping member 1 to ensure it is stably fixed in the new clamping position. The position of the clamping member 1 is adjusted so that the protruding edge 12 of the clamping member 1 aligns with the groove 32 of the battery 3, ensuring accurate sealing. The driving mechanism drives the pressure head 2 to press against the neck portion 31 of the battery 3 until the clamping member 1 and the pressure head 2 come into contact, completing the first pressing seal. At this point, the height of the neck portion 31 of the battery 3 should be further compressed to 60% ± 3% of its original height to ensure a tighter seal and reduce the risk of air or liquid leakage.

[0048] The squat seal is used for final sealing and adjusting the battery height to ensure uniformity. The battery 3, after two sealing processes, is sent to the squat seal module to ensure it is stably fixed on the support member 4. The position of the support member 4 is adjusted to ensure the battery 3 is stably placed within it. Since the support member 4 only fixes the lower part of the battery 3, it does not have protruding edges; only a corresponding limiting device is provided at the lower part of the support member 4 to prevent the battery 3 from shifting when subjected to axial X-pressure. The drive mechanism drives the squat seal sleeve 5 and the squat seal head 6 to close and press the neck 31 of the battery 3, ultimately pressing the battery 3 together and controlling the overall height to achieve uniformity in the height of the sealed battery 3.

[0049] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0050] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0051] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0052] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A battery sealing module, characterized in that, The neck portion (31) of the battery (3) is compressed and sealed, including: The clamping member (1) has a receiving hole (11) inside for accommodating the battery (3); the end of the receiving hole (11) has a straight edge (111) extending along the axial direction of the receiving hole (11), and the straight edge (111) is used to surround the periphery of the neck portion (31); The pressure head (2) has a pressing groove (21) at its end, and an arc-shaped part (211) is provided in the pressing groove (21) for fitting and compressing the neck part (31).

2. The battery sealing module according to claim 1, characterized in that, The clamping member (1) includes a protruding edge (12), which is disposed in the receiving hole (11) and is used to engage with the groove (32) of the battery (3).

3. The battery sealing module according to claim 1, characterized in that, The straight edge portion (111) has a first surface (1111) for fitting with the straight edge (33) of the neck portion (31) along the axial direction (X) of the receiving hole (11). The first surface (1111) has a first dimension L1, and the straight edge (33) of the neck portion (31) has a second dimension L2, satisfying L1 < L2.

4. The battery sealing module according to claim 3, characterized in that, The condition L1≥L2 / 2 is satisfied.

5. The battery sealing module according to claim 1, characterized in that, The pressing groove (21) further includes a transition portion (212) that connects to the arc-shaped portion (211). The first depth (A) of the transition portion (212) relative to the end face of the pressing head (2) is greater than or equal to the second depth (B) of the arc-shaped portion (211) relative to the end face of the pressing head (2).

6. The battery sealing module according to claim 1, characterized in that, The pressing groove (21) further includes a protrusion (213) that connects to the arc-shaped portion (211). The third depth (C) of the protrusion (213) relative to the end face of the pressing head (2) is less than the fourth depth (D) of the arc-shaped portion (211) relative to the end face of the pressing head (2).

7. The battery sealing module according to claim 1, characterized in that, The clamping member (1) includes a plurality of clamping blocks (13), which are connected to each other to form the receiving hole (11); The battery sealing module also includes: The guide sleeve (22) is provided with a plurality of clamping blocks (13) movably disposed within the guide sleeve (22), and the outer side of each clamping block (13) is in contact with the inner wall of the guide sleeve (22).

8. The battery sealing module according to any one of claims 1 to 7, characterized in that, The inner diameter of the straight edge (111) is 98% to 100% of the outer diameter of the battery (3).

9. A battery sealing system, characterized in that, Including the battery sealing module as described in any one of claims 1 to 8, and the squat sealing module, the squat sealing module comprising: The support member (4) is used to support the battery (3); A squatting sleeve (5) has a retaining hole (51) for surrounding the outer periphery of the battery (3) when the squatting sleeve (5) is pressed down; A squatting head (6) is movably disposed within the retaining hole (51), and the squatting head (6) is configured to abut against and compress the neck portion (31) when the squatting sleeve (5) is pressed down.

10. The battery sealing system according to claim 9, characterized in that, The squatting sleeve (5) includes a limiting part (52) disposed in the retaining hole (51). The limiting part (52) is configured to abut against the squatting head (6) when the squatting sleeve (5) is pressed down, so as to limit the squatting head (6).

11. The battery sealing system according to claim 10, characterized in that, It also includes an elastic element (7), which is located on the side of the squatting head (6) away from the bearing element (4) and abuts against the squatting sleeve (5).

12. The battery sealing system according to claim 9, characterized in that, The battery sealing module has multiple components, including: At least one first battery sealing module, wherein the pressing groove (21) includes the transition portion (212), the transition portion (212) is connected to the arc-shaped portion (211), and the first depth (A) of the transition portion (212) relative to the end face of the pressing head (2) is greater than or equal to the second depth (B) of the arc-shaped portion (211) relative to the end face of the pressing head (2); At least one second battery sealing module, wherein the pressing groove (21) includes the protrusion (213), the protrusion (213) is connected to the arcuate portion (211), and the third depth (C) of the protrusion (213) relative to the end face of the pressing head (2) is less than the fourth depth (D) of the arcuate portion (211) relative to the end face of the pressing head (2); The second depth (B) is greater than the fourth depth (D).

13. The battery sealing system according to any one of claims 9 to 12, characterized in that, The inner diameter of the retaining hole (51) is 99% to 101% of the outer diameter of the battery (3).

14. A production line, characterized in that, Includes the battery sealing module as described in any one of claims 1 to 8.

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