Battery cell clamp and final sealing machine

Abstract

The utility model belongs to the technical field of battery cell production, and particularly relates to a battery cell clamp and a final sealing machine. The clamp shell is provided with a containing cavity, and the containing cavity is provided with an upward opening. The first clamping plate and the second clamping plate are arranged in the containing cavity, the first clamping plate and the second clamping plate are opposite in a spaced mode in the first direction, the first clamping plate is connected with the clamp shell in a sliding mode in the first direction, and the second clamping plate is connected with the clamp shell in a sliding mode in the first direction; a gap between the first clamping plate and the second clamping plate is used for placing a battery cell, and an included angle which is not zero exists between the up-down direction and the first direction. The device can adapt to battery cells with different thicknesses.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery production, and particularly relates to a core clamp and a final sealing machine. Background Art

[0002] With the development of new energy technologies, the lithium battery industry has also developed rapidly. Lithium-ion batteries are classified into steel cases, aluminum cases, nickel-plated iron cases, aluminum plastic films, etc. according to the battery casings. Among them, aluminum plastic film batteries (soft-pack batteries) need processes such as top sealing, formation, and secondary sealing in sequence after liquid injection. Among them, the final sealing machine is applied to the secondary sealing process of aluminum plastic film batteries.

[0003] The final sealing machine mainly performs needle punching exhaust and final sealing on soft-pack batteries. At present, most of the clamps of the final sealing machines on the market can only be used for clamps of specific thicknesses. When sealing soft-pack batteries of different thicknesses, the clamps need to be replaced, resulting in poor versatility. Summary of the Invention

[0004] The technical problem to be solved by the utility model is: in view of the fact that most of the clamps of the final sealing machines on the market can only be used for clamps of specific thicknesses, and when sealing soft-pack batteries of different thicknesses, the clamps need to be replaced, resulting in poor versatility, a core clamp and a final sealing machine are provided.

[0005] On the one hand, to solve the above technical problem, an embodiment of the utility model provides a core clamp, which includes a clamp housing, a first clamping plate, and a second clamping plate;

[0006] The clamp housing is provided with a receiving cavity, and the receiving cavity has an upward opening;

[0007] The first clamping plate and the second clamping plate are arranged in the receiving cavity. The first clamping plate and the second clamping plate are spaced relatively along a first direction. The first clamping plate is slidably connected to the clamp housing along the first direction, and the second clamping plate is slidably connected to the clamp housing along the first direction. The space between the first clamping plate and the second clamping plate is used for placing the core, and there is a non-zero included angle between the up-down direction and the first direction.

[0008] Optionally, it further includes a first limiting member. The first limiting member includes a first spring, a first bolt, and a first bushing. A first through hole is provided on the clamp housing, a first threaded hole is provided on the first clamping plate, the first bushing is arranged in the first through hole, the first bushing is fixed on the clamp housing, the first bolt passes through the first bushing to slide in the first bushing along the first direction, and the threaded section of the first bolt passes through the first bushing and enters the receiving cavity and is threadedly connected to the first threaded hole;

[0009] One end of the first spring is connected to the fixture housing, and the other end of the first spring is connected to the first bolt. The first spring biases the first bolt away from the second clamping plate.

[0010] Optionally, a second limiting member is further included. The second limiting member includes a second spring, a second bolt, and a second bushing. A second through hole is provided on the fixture housing, and a second threaded hole is provided on the second clamping plate. The second bushing is disposed in the second through hole and fixed to the fixture housing. The second bolt passes through the second bushing and slides in the second bushing along the first direction. The threaded section of the second bolt passes through the second bushing and into the accommodation cavity and is threadedly connected to the second threaded hole.

[0011] One end of the second spring is connected to the fixture housing, and the other end of the second spring is connected to the second bolt. The second spring biases the second bolt away from the first clamping plate.

[0012] Optionally, a plurality of adjustment holes are provided on the surface of the first clamping plate close to the second clamping plate. The plurality of adjustment holes are arranged at intervals in the up and down direction. An adjustment plate and a connecting bolt are provided between the first clamping plate and the second clamping plate. An adjustment slot is provided on the adjustment plate. The connecting bolt passes through the adjustment slot and is threadedly connected to the adjustment hole.

[0013] Optionally, the fixture housing includes a first housing and a second housing. The lower side of the first housing is rotatably connected to the lower side of the second housing. The first housing has a first sub-cavity with a first lateral opening. The second housing has a second sub-cavity and a notch. The second sub-cavity has a second lateral opening. When the first housing and the second housing are assembled into the fixture housing, the first lateral opening and the second lateral opening are in communication, and the notch forms the opening of the accommodation cavity. The first sub-cavity and the second sub-cavity are docked to form the accommodation cavity.

[0014] Optionally, a plurality of the second limiting members are provided. The plurality of second limiting members are arranged at intervals. A synchronization bar is provided between two adjacent second limiting members. The second bolt in one of the second limiting members passes through one end of the synchronization bar, and the second bolt in the other second limiting member passes through the other end of the synchronization bar.

[0015] On the other hand, the utility model also provides a final sealing machine, comprising a vacuum chamber, an external pressure component, a sealing component, a puncture component, a suction cup component and the above-mentioned battery clamp, wherein the external pressure component, the sealing component, the puncture component and the suction cup component are arranged in the vacuum chamber; the vacuum chamber is provided with a preset station, the battery clamp is arranged on the preset station, the external pressure component is arranged on one side of the preset station, and the sealing component, the puncture component and the suction cup component are arranged above the preset station;

[0016] The external pressure component is slidably connected to the vacuum chamber along the first direction, and the external pressure component is used to press the battery cell fixture located at the preset station;

[0017] The sealing assembly is used for sealing the battery cell; the puncture assembly is used for puncturing the top of the battery cell; the suction cup assembly includes a first suction cup and a second suction cup, and the first suction cup and the second suction cup are respectively used for adsorbing the oppositely arranged side walls of the battery cell.

[0018] Optionally, the sealing assembly includes a first sealing mold and a second sealing mold, the first sealing mold and the second sealing mold are arranged relatively to each other along the first direction, and the first sealing mold and the second sealing mold can be close to each other or away from each other.

[0019] Optionally, the suction cup assembly further includes a first guide rod, a second guide rod, a first return spring, a second return spring, a first frame, a second frame, a first bracket and a second bracket, the first bracket and the second bracket are arranged opposite to each other, the first bracket and the second bracket can approach each other or move away from each other, the first guide rod is penetrated by the first bracket along the first direction, the first frame is connected to an end of the first guide rod close to the second bracket, the first return spring is sleeved on the first guide rod, and two ends of the first return spring are respectively connected to the first bracket and the first frame; the second guide rod is penetrated by the second bracket along the first direction, the second frame is connected to an end of the second guide rod close to the first bracket, the second return spring is sleeved on the second guide rod, and two ends of the second return spring are respectively connected to the second bracket and the second frame;

[0020] The first suction cup is arranged on the first frame, and the second suction cup is arranged on the second frame.

[0021] Optionally, the needle assembly includes a bayonet fixed to the first bracket. A first perforation is provided on the first frame body, and a second perforation is provided on the second frame body. The second perforation is opposite to the first perforation. When the first return spring is compressed, the bayonet can pass through the first perforation towards the second bracket and penetrate into the second perforation.

[0022] For the battery cell jig and the final sealing machine according to the embodiments of the present invention, by means of the first clamping plate and the second clamping plate that are adjustable in position along the first direction, the interval between the two is changed, so as to be able to adapt to the thickness of the battery cell placed within the interval between the two. If the battery cell is thicker, the interval between the first clamping plate and the second clamping plate is increased; if the battery cell is thinner, the interval between the first clamping plate and the second clamping plate is decreased, thereby being able to adapt to battery cells of different thicknesses. Brief Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of the battery cell jig provided by an embodiment of the present invention;

[0024] Figure 2 It is an exploded structure diagram of the battery cell jig provided by an embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of a partial structure of the final sealing machine provided by an embodiment of the present invention;

[0026] Figure 4 It is a partial exploded diagram of the final sealing machine provided by an embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the suction cup assembly of the final sealing machine provided by an embodiment of the present invention.

[0028] The reference numerals in the description are as follows: 100, battery cell; 1, fixture housing; 11, first housing; 12, second housing; 13, hinge; 14, first clamping plate; 141, adjustment hole; 15, second clamping plate; 16, adjustment plate; 17, first sub-chamber; 18, notch; 19, weight reduction groove; 2, suction cup assembly; 20, sliding guide post; 21, first suction cup; 23, first base; 231, first guide hole; 24, second base; 25, first bracket; 26, second bracket; 27, first frame body; 28, second frame body; 291, first return spring; 292, second return spring; 293, first guide rod; 294, second guide rod; 3, needle punching assembly; 31, bayonet; 4, sealing assembly; 41, first sealing die; 42, second sealing die; 43, sliding guide rod; 5, first limiting member; 51, first spring; 52, first bolt; 53, first bushing; 6, second limiting member; 61, second spring; 62, second bolt; 63, second bushing; 7, synchronous bar; 81, outer pressing plate; 82, guide post. Detailed implementation manners

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] As Figure 1 and Figure 2 shown, an embodiment of the present utility model provides a battery cell fixture, including a fixture housing 1, a first clamping plate 14 and a second clamping plate 15; the fixture housing 1 is provided with a receiving cavity, and the receiving cavity has an upward opening; different from the prior art, when the battery cell 100 is placed in the receiving cavity, the battery cell 100 is placed vertically, and the upper end of the battery cell 100 is its top.

[0031] The first clamping plate 14 and the second clamping plate 15 are arranged in the receiving cavity, the first clamping plate 14 and the second clamping plate 15 are spaced apart and opposite to each other in a first direction, the first clamping plate 14 is slidably connected to the fixture housing 1 in the first direction, the second clamping plate 15 is slidably connected to the fixture housing 1 in the first direction, and the space between the first clamping plate 14 and the second clamping plate 15 is used to place the battery cell 100. The up-down direction and the first direction in this embodiment are perpendicular.

[0032] The present utility model can adapt to the thickness of the battery cell 100 placed within the interval between the first clamping plate 14 and the second clamping plate 15 which are adjustable in position along the first direction by changing the interval therebetween. If the battery cell 100 is relatively thick, the interval between the first clamping plate 14 and the second clamping plate 15 is increased; if the battery cell 100 is relatively thin, the interval between the first clamping plate 14 and the second clamping plate 15 is decreased, so as to be able to adapt to battery cells of different thicknesses.

[0033] Referring to Figure 2 , as an example, the battery cell fixture further includes a first limiting member 5. The first limiting member 5 includes a first spring 51, a first bolt 52 and a first bushing 53. A first through hole is provided on the fixture housing 1, a first threaded hole is provided on the first clamping plate 14, the first bushing 53 is disposed in the first through hole, the first bushing 53 is fixed on the fixture housing 1, the first bolt 52 passes through the first bushing 53 and slides in the first bushing 53 along the first direction, and the threaded section of the first bolt 52 passes through the first bushing 53 and enters the accommodation cavity and is threadedly connected to the first threaded hole;

[0034] One end of the first spring 51 is connected to the fixture housing 1, the other end of the first spring 51 is connected to the first bolt 52, and the first spring 51 applies a force to the first bolt 52 to move away from the second clamping plate 15, so that the first bolt 52 has a tendency to move away from the second clamping plate 15.

[0035] In this embodiment, in order to maintain the position of the first clamping plate 14 relative to the fixture housing 1 for a long time, it is realized by the first limiting member 5. Specifically, when it is necessary for the first clamping plate 14 to gradually move away from the second clamping plate 15, the first bolt 52 is rotated so that the depth of the first bolt 52 screwed into the first clamping plate 14 increases. At this time, the length of the first bolt 52 protruding from the surface of the first clamping plate 14 becomes smaller, and the interval between the screw head of the first bolt 52 passing through the fixture housing 1 and the fixture housing 1 becomes smaller. The first spring 51 is compressed, and the first spring 51 provides a pressure to the first bolt 52 so that the screw head of the first bolt 52 moves away from the threaded section of the first bolt 52 screwed into the first clamping plate 14.

[0036] When it is necessary for the first clamping plate 14 to approach the second clamping plate 15, the first bolt 52 is rotated so that the depth of the first bolt 52 screwed into the first clamping plate 14 becomes smaller. At this time, the length of the first bolt 52 exposed outside the first clamping plate 14 increases, the first spring 51 gradually extends from the above compressed state, one end of the first spring 51 abuts against the fixture housing 1, and the other end of the first spring 51 abuts against the screw head of the first bolt 52, so that the length of the first bolt 52 protruding from the fixture housing 1 remains unchanged.

[0037] As an example, the battery cell fixture further includes a second limiting member 6. The second limiting member 6 includes a second spring 61, a second bolt 62, and a second bushing 63. A second through hole is provided on the fixture housing 1, and a second threaded hole is provided on the second clamping plate 15. The second bushing 63 is disposed in the second through hole and fixed to the fixture housing 1. The second bolt 62 passes through the second bushing 63 to slide in the second bushing 63 along the first direction. The threaded section of the second bolt 62 penetrates into the accommodating cavity from the second bushing 63 and is threadedly connected to the second threaded hole;

[0038] One end of the second spring 61 is connected to the fixture housing 1, and the other end of the second spring 61 is connected to the second bolt 62. The second spring 61 applies a force to the second bolt 62 to move away from the first clamping plate 14, so that the second bolt 62 has a tendency to move away from the first clamping plate 14.

[0039] Similarly to the first limiting member 5, the second limiting member 6 also functions to limit the position of the second clamping plate 15 relative to the fixture housing 1. Under the simultaneous action of the first limiting member 5 and the second limiting member 6, the interval between the first clamping plate 14 and the second clamping plate 15 no longer changes, enabling the battery cell 100 to be stably placed in the accommodating cavity.

[0040] Furthermore, a plurality of second limiting members 6 are provided, and the plurality of second limiting members 6 are spaced apart. A synchronizing bar 7 is provided between two adjacent second limiting members 6. The second bolt 62 in one of the second limiting members 6 passes through one end of the synchronizing bar 7, and the second bolt 62 in the other second limiting member 6 passes through the other end of the synchronizing bar 7.

[0041] As an example, a plurality of adjusting holes 141 are provided on the surface of the first clamping plate 14 close to the second clamping plate 15. The plurality of adjusting holes 141 are arranged at intervals in the up and down direction. An adjusting plate 16 and a connecting bolt are provided between the first clamping plate 14 and the second clamping plate 15. An adjusting groove is provided on the adjusting plate 16, and the connecting bolt passes through the adjusting groove and is threadedly connected to the adjusting hole 141.

[0042] In this embodiment, the adjusting plate 16 and the first clamping plate 14 are detachably connected by the connecting bolt, and by the threaded fit of the connecting bolt with the adjusting hole 141 at any height, the up and down position of the adjusting plate 16 is changed. On the basis of being able to adapt to battery cells 100 of different thicknesses as described above, this embodiment can also adapt to battery cells 100 of different sizes in the up and down direction. Therefore, in this embodiment, the first clamping plate 14, the second clamping plate 15, and the adjusting plate 16 can adapt to battery cells 100 with different external dimensions.

[0043] As an example, the fixture housing 1 includes a first housing 11 and a second housing 12. The lower side of the first housing 11 and the lower side of the second housing 12 are rotatably connected by a hinge 13. The first housing 11 has a first sub-cavity 17 with a first lateral opening. The second housing 12 has a second sub-cavity and a notch 18, and the second sub-cavity has a second lateral opening. When the first housing 11 and the second housing 12 are joined to form the fixture housing 1, the first lateral opening and the second lateral opening are in communication, and the notch 18 forms the opening of the accommodating cavity. The first sub-cavity 17 and the second sub-cavity form the accommodating cavity.

[0044] In this embodiment, when taking and discharging the battery cell 100, the first housing 11 and the second housing 12 are rotated and opened. Generally, the opening angle between the first housing 11 and the second housing 12 at the hinge 13 is within 120 degrees to 180 degrees, which is convenient for taking and placing.

[0045] In this embodiment, weight-reducing grooves 19 are respectively provided on the first housing 11 and the second housing 12 and penetrate along their respective thickness directions. The weight-reducing grooves 19 make the first housing 11 and the second housing 12 respectively in a hollow structure, thereby reducing the overall weight of the fixture housing 1.

[0046] As an example, referring to Figures 3 to 5 , the present utility model further provides a final sealing machine, which includes the battery cell fixture described in the above embodiment, and also includes a vacuum cavity, an external pressure assembly, a sealing assembly 4, a needle-punching assembly 3 and a suction cup assembly 2. The external pressure assembly, the sealing assembly 4, the needle-punching assembly 3 and the suction cup assembly 2 are arranged in the vacuum cavity; the vacuum cavity is provided with a preset station, the battery cell fixture is arranged on the preset station, the external pressure assembly is arranged on one side of the preset station, and the sealing assembly 4, the needle-punching assembly 3 and the suction cup assembly 2 are arranged above the preset station; more specifically, the suction cup assembly 2 is arranged above the sealing assembly 4, and the needle-punching assembly 3 is arranged above the suction cup assembly 2.

[0047] The external pressure assembly is slidably connected to the vacuum cavity along a first direction. The external pressure assembly is arranged on the side of the second housing 12 away from the first housing 11, and the external pressure assembly is used to squeeze the battery cell fixture located on the preset station; specifically, the external pressure assembly includes a guide post and an external pressure plate. One end of the guide post is connected to the external pressure plate, and the other end is connected to a cylinder fixed in the vacuum cavity. The guide post drives the external pressure plate to move towards the second housing, and applies pressure to the synchronous bar 7, thereby adjusting the liquid storage amount in the battery cell 100.

[0048] The sealing assembly 4 is used to seal the battery cell 100; the needle-punching assembly 3 is used to pierce the top end of the battery cell 100. The suction cup assembly 2 includes a first suction cup 21 and a second suction cup. The first suction cup 21 and the second suction cup are respectively used to adsorb the opposite side walls of the battery cell 100.

[0049] Referring to Figure 3 and Figure 4, specifically, the sealing component 4 includes a sliding guide rod 43, a first sealing die 41, and a second sealing die 42. The first sealing die 41 and the second sealing die 42 are arranged opposite to each other in the first direction, and the first sealing die 41 and the second sealing die 42 can approach or move away from each other. The first sealing die 41 and the second sealing die 42 are respectively slidably connected to the sliding guide rod 43, and the first sealing die 41 and the second sealing die 42 are respectively located at one end of the sliding guide rod 43. The first sealing die 41 and the second sealing die 42 move closer to each other from the end of the sliding guide rod 43 towards the middle of the sliding guide rod 43. Conversely, the first sealing die 41 and the second sealing die 42 move away from each other.

[0050] Referring to Figures 3 to 5 , specifically, the suction cup component 2 further includes a first guide rod 293, a second guide rod 294, a first return spring 291, a second return spring 292, a first frame 27, a second frame 28, a first bracket 25, and a second bracket 26. The first bracket 25 and the second bracket 26 are arranged opposite to each other, and the first bracket 25 and the second bracket 26 can approach or move away from each other. The first guide rod 293 penetrates the first bracket 25 in the first direction, and the first frame 27 is connected to one end of the first guide rod 293 close to the second bracket 26. The first return spring 291 is sleeved on the first guide rod 293, and both ends of the first return spring 291 are respectively connected to the first bracket 25 and the first frame 27; the second guide rod 294 penetrates the second bracket 26 in the first direction, and the second frame 28 is connected to one end of the second guide rod 294 close to the first bracket 25. The second return spring 292 is sleeved on the second guide rod 294, and both ends of the second return spring 292 are respectively connected to the second bracket 26 and the second frame 28;

[0051] The first suction cup 21 is arranged on the first frame 27, and the second suction cup is arranged on the second frame 28. A first base 23 is arranged on the first bracket 25, a second base 24 is arranged on the second bracket 26. A first guide hole 231 is arranged on the first base 23, a second guide hole is arranged on the second base 24, and the first guide hole 231 and the second guide hole are coaxial. The suction cup component 2 further includes a sliding guide post 20. The sliding guide post 20 is parallel to the sliding guide rod 43, and the sliding guide post 20 penetrates the first guide hole 231 and the second guide hole, so that the first base 23 and the second base 24 slide on the sliding guide post 20.

[0052] Specifically, the acupuncture component 3 includes a bayonet 31. The bayonet 31 is fixed on the first bracket 25. A first through hole is arranged on the first frame 27, a second through hole is arranged on the second frame 28, and the second through hole is opposite to the first through hole. When the first return spring 291 is compressed, the bayonet 31 can penetrate from the first through hole towards the second bracket 26 and penetrate into the second through hole.

[0053] The final sealing machine according to the embodiment of the present utility model has the following working principle: After placing the battery cell 100 into the fixture housing 1, the fixture housing 1 is placed into the vacuum chamber and positioned at a preset station. The outer pressing plate applies pressure to the second clamping plate 15 to adjust the liquid storage amount in the battery cell 100. After the vacuum value in the vacuum chamber reaches the required value, the suction cup assembly 2 moves towards the side wall of the battery cell 100 and adsorbs the side walls on the opposite sides of the battery cell 100. At the same time, the bayonet 31 continues to move towards the battery cell 100 until it pierces the battery cell 100. After the bayonet 31 pierces the battery cell 100, the bayonet 31 withdraws from the battery cell 100, and the first suction cup 21 and the second suction cup then move the two side walls of the aluminum-plastic film away from each other to separate them, thereby providing a certain liquid storage space. After the separation reaches the second-stage vacuum value, the sealing assembly 4 seals the battery cell 100.

[0054] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A battery cell fixture, characterized in that: It includes a clamp housing, a first clamping plate, and a second clamping plate; The fixture housing is provided with a receiving cavity, and the receiving cavity has an upward opening; The first clamping plate and the second clamping plate are arranged in the accommodating cavity, the first clamping plate and the second clamping plate are spaced opposite to each other along a first direction, the first clamping plate is slidably connected to the clamp housing along the first direction, the second clamping plate is slidably connected to the clamp housing along the first direction, the interval between the first clamping plate and the second clamping plate is used to place the battery cell, and there is a non-zero angle between the up-down direction and the first direction; The clamp further comprises a first stopper, the first stopper comprises a first spring, a first bolt and a first sleeve, the clamp housing is provided with a first through hole, the first clamp plate is provided with a first threaded hole, the first sleeve is provided in the first through hole, the first sleeve is fixed to the clamp housing, the first bolt is passed through the first sleeve to slide in the first sleeve along the first direction, and the threaded section of the first bolt passes through the first sleeve into the accommodating cavity and is threadedly connected to the first threaded hole; One end of the first spring is connected to the clamp housing, and the other end of the first spring is connected to the first bolt, and the first spring makes the first bolt tend to move away from the second clamping plate; The clamp further comprises a second stopper, the second stopper comprises a second spring, a second bolt and a second sleeve, the clamp housing is provided with a second through hole, the second clamp plate is provided with a second threaded hole, the second sleeve is provided in the second through hole, the second sleeve is fixed to the clamp housing, the second bolt is passed through the second sleeve to slide in the second sleeve along the first direction, and the threaded section of the second bolt passes through the second sleeve into the accommodating cavity and is threadedly connected to the second threaded hole; One end of the second spring is connected to the clamp housing, and the other end of the second spring is connected to the second bolt. The second spring allows the second bolt to have a tendency to move away from the first clamping plate.

2. The battery cell fixture according to claim 1, characterized in that: A plurality of adjustment holes are arranged on the surface of the first clamping plate close to the second clamping plate, and the plurality of adjustment holes are arranged at intervals in the up and down directions. An adjustment plate and a connecting bolt are arranged between the first clamping plate and the second clamping plate, and an adjustment groove is arranged on the adjustment plate. The connecting bolt passes through the adjustment groove and is threadedly connected with the adjustment hole.

3. The battery cell fixture according to claim 1, characterized in that: The clamp shell includes a first shell and a second shell, the lower side of the first shell and the lower side of the second shell are rotatably connected, the first shell has a first sub-cavity, the first sub-cavity has a first lateral opening, the second shell has a second sub-cavity and a notch, the second sub-cavity has a second lateral opening, when the first shell and the second shell are spliced ​​into the clamp shell, the first lateral opening and the second lateral opening are connected, the notch forms the opening of the accommodating cavity, and the first sub-cavity and the second sub-cavity are connected to form the accommodating cavity.

4. The battery cell fixture according to claim 1, characterized in that: There are multiple second limit members, which are arranged at intervals, and a synchronization bar is arranged between two adjacent second limit members, wherein the second bolt in one of the second limit members is passed through one end of the synchronization bar, and the second bolt in the other second limit member is passed through the other end of the synchronization bar.

5. A final sealing machine, characterized in that: The battery clamp comprises a vacuum chamber, an external pressure component, a sealing component, a puncture component, a suction cup component and the battery clamp according to any one of claims 1 to 4, wherein the external pressure component, the sealing component, the puncture component and the suction cup component are arranged in the vacuum chamber; the vacuum chamber is provided with a preset station, the battery clamp is arranged on the preset station, the external pressure component is arranged on one side of the preset station, and the sealing component, the puncture component and the suction cup component are arranged above the preset station; The external pressure component is slidably connected to the vacuum chamber along the first direction, and the external pressure component is used to press the battery cell fixture located at the preset station; The sealing assembly is used for sealing the battery cell; the puncture assembly is used for puncturing the top of the battery cell; the suction cup assembly includes a first suction cup and a second suction cup, and the first suction cup and the second suction cup are respectively used for adsorbing the oppositely arranged side walls of the battery cell.

6. The final sealing machine according to claim 5, characterized in that: The sealing assembly includes a first sealing mold and a second sealing mold. The first sealing mold and the second sealing mold are arranged opposite to each other along the first direction. The first sealing mold and the second sealing mold can be close to each other or away from each other.

7. The final sealing machine according to claim 5, characterized in that: The suction cup assembly also includes a first guide rod, a second guide rod, a first return spring, a second return spring, a first frame, a second frame, a first bracket and a second bracket, the first bracket and the second bracket are arranged opposite to each other, the first bracket and the second bracket can approach each other or move away from each other, the first guide rod is penetrated by the first bracket along the first direction, the first frame is connected to an end of the first guide rod close to the second bracket, the first return spring is sleeved on the first guide rod, and the two ends of the first return spring are respectively connected to the first bracket and the first frame; the second guide rod is penetrated by the second bracket along the first direction, the second frame is connected to an end of the second guide rod close to the first bracket, the second return spring is sleeved on the second guide rod, and the two ends of the second return spring are respectively connected to the second bracket and the second frame; The first suction cup is arranged on the first frame, and the second suction cup is arranged on the second frame.

8. The final sealing machine according to claim 7, characterized in that: The acupuncture assembly includes a bayonet, which is fixed on the first bracket. The first bracket is provided with a first through hole, and the second bracket is provided with a second through hole. The second through hole is opposite to the first through hole. When the first return spring is compressed, the bayonet can pass through the first through hole toward the second bracket and into the second through hole.

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