Sealing device

Abstract

The utility model discloses a sealing device, and belongs to the technical field of batteries. The sealing device comprises a base, a clamp assembly and a pressing assembly. And after the to-be-sealed opening end part of the battery sequentially penetrates through the first through hole of the base and the second through hole formed by the clamp assembly, the clamp assembly can enter a clamping state. And at the moment, the first end part of the ejector rod and the clamping part jointly apply clamping force to the battery, so that the pressing assembly can effectively perform pressing operation. In the process that the clamp assembly is converted from the clamping state to the separation state, the clamping part is separated from the battery firstly, and then the first end of the ejector rod is separated from the battery. Therefore, when the clamping part is separated from the battery, the first end part of the ejector rod is still in contact with the battery. Therefore, the battery cannot be clamped on the clamping part due to sudden separation of the clamping part, so that the procedure of manually taking down the battery from the clamping part can be cancelled, and the production efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a sealing device. Background Technology

[0002] Cylindrical batteries are a type of battery with a cylindrical shape, high capacity, long cycle life, and a wide operating temperature range. They are widely used in various portable electronic devices and other fields that require efficient energy supply in daily life.

[0003] Sealing is a critical step in the production of cylindrical batteries. Poor sealing will lead to leakage from the injection hole, which in turn corrodes the sealant and casing, ultimately rendering the cylindrical battery unusable. Current technology uses a sealing device to seal the cylindrical batteries. After electrolyte filling, the cylindrical battery is fed into the sealing device by a feeding device, where locking plates secure it. Finally, a stamping assembly seals the battery.

[0004] However, with current sealing devices, the cylindrical batteries are prone to getting stuck on the locking plate during mold opening after sealing. To avoid affecting subsequent automated production, they need to be removed manually, which reduces production efficiency. Utility Model Content

[0005] This application provides a sealing device. It can solve the problem of reduced production efficiency in existing technologies. The technical solution is as follows:

[0006] On the one hand, a sealing device is provided, comprising:

[0007] Base, clamping assembly, and pressing assembly;

[0008] The base has a first through hole;

[0009] The clamping assembly is located on one side of the base, and the clamping assembly includes: a plurality of clamping parts and a plurality of push rods corresponding to the plurality of clamping parts. The plurality of clamping parts are used to form a second through hole communicating with the first through hole. Each clamping part is movably connected to the base, and each clamping part is movably connected to the corresponding push rod.

[0010] The pressing assembly is located on the side of the clamp assembly away from the base and is sleeved on the outer periphery of the clamp assembly. The pressing assembly is configured to press the opening to be sealed after the end of the battery with the opening to be sealed passes through the first through hole and the second through hole in sequence.

[0011] The clamping assembly has a clamping state and a disengaged state. When the clamping assembly is in the clamping state, the first end of the push rod closer to the second through hole and the clamping part are both used to apply clamping force to the battery. During the process of the clamping assembly switching from the clamping state to the disengaged state, the clamping part first separates from the battery, and then the first end of the push rod separates from the battery.

[0012] Optionally, each of the clamping portions has a connecting hole communicating with the second through hole, and the push rod is elastically connected to the clamping portion within the connecting hole;

[0013] Wherein, after the clamping assembly is in the separated state, the second end of the push rod away from the second through hole protrudes out from the side of the clamping part away from the second through hole;

[0014] The pressing assembly is configured to move in a direction toward the base, such that the pressing assembly first applies a driving force to the second end of the push rod to drive the first end of the push rod to a position abutting the battery, and then drives the clamping part to move in a direction toward the battery.

[0015] Optionally, the connecting hole includes: a first sub-connecting hole and a second sub-connecting hole that are connected to each other, wherein the first sub-connecting hole is closer to the second through hole than the second sub-connecting hole, and the inner diameter of the second sub-connecting hole is larger than the inner diameter of the first sub-connecting hole, so that an annular limiting surface can be formed between the first sub-connecting hole and the second sub-connecting hole;

[0016] The clamp assembly further includes: a first elastic element located in the second sub-connecting hole, one end of the first elastic element abutting against the annular limiting surface, the first elastic element being sleeved on the top rod, and the other end of the first elastic element abutting against the second end of the top rod.

[0017] Optionally, the pressing assembly includes an outer cylinder and a pressing head, one end of the outer cylinder being sleeved on the outer periphery of the clamping assembly, and the pressing head being distributed at least inside the outer cylinder and fixedly connected to the other end of the outer cylinder;

[0018] During the movement of the pressing assembly toward the base, the outer cylinder first applies a driving force to the second end of the top rod, and then applies a driving force to the clamping part.

[0019] Optionally, the outer cylinder includes: a first sub-outer cylinder and a second sub-outer cylinder connected to each other; the first sub-outer cylinder is closer to the base, and the inner diameter of the first sub-outer cylinder is larger than the inner diameter of the second sub-outer cylinder;

[0020] Wherein, after the clamping assembly is in the separated state, the first sub-outer sleeve is fitted around the outer periphery of the clamping assembly and is distributed on the side of the second end of the top rod away from the base; after the clamping assembly is in the clamping state, the second sub-outer sleeve is fitted around the outer periphery of the clamping assembly.

[0021] Optionally, the outer cylinder further includes: a transition sub-outer cylinder connecting the first sub-outer cylinder and the second sub-outer cylinder, wherein the inner wall of the transition sub-outer cylinder is a first inclined surface, and the clamping part has a second inclined surface that cooperates with the first inclined surface at its outer edge away from the base.

[0022] Optionally, the base has a plurality of first sliding portions on the side facing the clamping assembly, and the plurality of first sliding portions correspond one-to-one with the plurality of clamping portions;

[0023] Each of the clamping portions has a second sliding portion on the side facing the base that engages with the corresponding first sliding portion;

[0024] The first sliding part and the second sliding part are slidably connected.

[0025] Optionally, one of the first sliding portion and the second sliding portion is a sliding protrusion, and the other is a sliding groove;

[0026] Wherein, after the base is connected to the clamp assembly, at least a portion of the sliding protrusion is located within the sliding groove.

[0027] Optionally, the base has a plurality of fourth through holes distributed along the circumference of the base, the plurality of fourth through holes corresponding one-to-one with the plurality of clamping parts, and the through direction of the fourth through holes being perpendicular to the through direction of the first through holes;

[0028] The sealing device further includes a plurality of reset components corresponding one-to-one with the plurality of fourth through holes, each of the reset components passing through the corresponding fourth through hole and elastically connected to the corresponding clamping part.

[0029] Optionally, the reset assembly includes: a positioning rod, a limiting protrusion, and a second elastic element;

[0030] One end of the positioning rod passes through the fourth through hole and is fixedly connected to the clamping part; the limiting protrusion is connected to the end of the positioning rod away from the clamping part; the second elastic element is sleeved on the positioning rod, and the two ends of the second elastic element abut against the base and the limiting protrusion respectively.

[0031] The beneficial effects of the technical solutions provided in this application include at least the following:

[0032] After the battery's unsealed opening passes sequentially through the first through hole in the base and the second through hole formed by the clamping assembly, the clamping assembly can enter the clamping state. At this time, the first end of the push rod and the clamping part jointly apply a clamping force to the battery to ensure that the pressing assembly can effectively perform the pressing operation. During the transition of the clamping assembly from the clamping state to the disengagement state, the clamping part first separates from the battery, and then the first end of the push rod separates from the battery. In this way, when the clamping part separates from the battery, the first end of the push rod still maintains contact with the battery. This prevents the battery from getting stuck on the clamping part due to sudden separation, thereby eliminating the need for manual removal of the battery from the clamping part and improving production efficiency. Attached Figure Description

[0033] 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 accompanying 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.

[0034] Figure 1 This is a schematic diagram of a sealing device structure provided in an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of a base structure provided in an embodiment of this application;

[0036] Figure 3 This is a schematic diagram of a combination of a base and a clamp assembly provided in an embodiment of this application;

[0037] Figure 4 This is a cross-sectional view of a clamping assembly in a sealing device provided in an embodiment of this application, in a separated state;

[0038] Figure 5 This is a cross-sectional view of a clamping assembly in a sealing device provided in an embodiment of this application, in a clamped state;

[0039] Figure 6 This is a cross-sectional view of the clamping assembly in a separated state in another sealing device provided in this application embodiment;

[0040] Figure 7 This is a cross-sectional view of the clamping assembly in a separated state in another sealing device provided in the embodiments of this application;

[0041] Figure 8 This is a schematic diagram of another base structure provided in an embodiment of this application;

[0042] Figure 9This is a schematic diagram of the structure of a clamping assembly provided in an embodiment of this application from another perspective;

[0043] Figure 10 yes Figure 3 A partial exploded view of the base and clamping assembly is shown;

[0044] Figure 11 This is a cross-sectional view of a sealing device provided in an embodiment of this application;

[0045] Figure 12 This is a cross-sectional view of another sealing device provided in an embodiment of this application;

[0046] Figure 13 This is a cross-sectional view of another sealing device provided in the embodiments of this application. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0048] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a sealing device provided in an embodiment of this application. The sealing device 000 may include: a base 100, a clamp assembly 200, and a pressing assembly 300.

[0049] To see the structure of the base 100 in the sealing device 000 more clearly, please refer to... Figure 2 , Figure 2 This is a schematic diagram of a base structure provided in an embodiment of this application. The base 100 in the sealing device 000 may have a first through hole K1.

[0050] To more clearly see the mating relationship between the base 100 and the pressing assembly 300 in the sealing device 000, as well as the structure of the pressing assembly 300, please refer to [reference needed]. Figure 3 , Figure 3 This is a schematic diagram of a combination of a base and a clamping assembly provided in an embodiment of this application. The clamping assembly 200 in the sealing device 000 is located on one side of the base 100, and the clamping assembly 200 may include: a plurality of clamping parts 201, and a plurality of push rods 202 corresponding one-to-one with the plurality of clamping parts 201.

[0051] It should be noted that the multiple clamping parts 201 in the clamping assembly 200 are also commonly referred to as locking plates. These clamping parts 201 can be used to form a second through hole K2 communicating with the first through hole K1. Each clamping part 201 is movably connected to the base 100, and each clamping part 201 is movably connected to a corresponding push rod 202. Here, the push rod 202 may have a first end and a second end disposed opposite to each other, wherein the first end of the push rod 202 is closer to the second through hole K2 than the second end of the push rod 202.

[0052] In this embodiment, the clamping assembly 200 in the sealing device 000 can have both a separated state and a clamped state. Please refer to... Figure 4 , Figure 4 This is a cross-sectional view of a clamping assembly in a sealing device provided in an embodiment of this application, in a separated state. After the clamping assembly 200 in the sealing device 000 is in a separated state, at least a portion of the battery 001 can be distributed within the second through hole K2 formed by the plurality of clamping portions 201 in the clamping assembly 200. Please refer to... Figure 5 , Figure 5 This is a cross-sectional view of a clamping assembly in a sealing device provided in an embodiment of this application, in a clamped state. After the clamping assembly 200 in the sealing device 000 is in a clamped state, the multiple clamping parts 201 in the clamping assembly 200 can clamp the battery 001 distributed in the second through hole K2.

[0053] The pressing component 300 in the sealing device 000 is located on the side of the clamping assembly 200 opposite to the base 100 and is sleeved on the outer periphery of the clamping assembly 200. Here, the pressing component 300 in the sealing device 000 can be configured to press the opening to be sealed after the end of the battery 001 with the opening to be sealed passes through the first through hole K1 and the second through hole K2 in sequence. For example, firstly, the clamping assembly 200 in the sealing device 000 needs to be in a disengaged state, so that the end of the battery 001 with the opening to be sealed passes through the first through hole K1 and the second through hole K2 in sequence. Then, the clamping assembly 200 in the sealing device 000 can be clamped first, and then the pressing component 300 can press the opening to be sealed on the battery 001.

[0054] In this application, after the clamping assembly 200 is in the clamping state, the first end of the push rod 202 closer to the second through hole K2 and the clamping part 201 are both used to apply clamping force to the battery 001; during the process of the clamping assembly 200 switching from the clamping state to the disengaging state, the clamping part 201 first separates from the battery 001, and then the first end of the push rod 202 separates from the battery 001.

[0055] In related technologies, after the sealing device completes the sealing of the battery, the battery may get stuck on the locking tile when the mold is opened (that is, the locking tile is opened). In order not to affect subsequent automated production, the battery needs to be removed manually from the locking tile, which leads to a reduction in production efficiency.

[0056] In this embodiment, after the unsealed opening end of the battery 001 passes sequentially through the first through hole K1 of the base 100 and the second through hole K2 formed by the clamping assembly 200, the clamping assembly 200 can enter the clamping state. At this time, the first end of the push rod 202 and the clamping part 201 jointly apply a clamping force to the battery 001 to ensure that the pressing assembly 300 can effectively perform the pressing operation. During the process of the clamping assembly 200 transitioning from the clamping state to the disengagement state, the clamping part 201 first separates from the battery 001, and then the first end of the push rod 202 separates from the battery 001. In this way, when the clamping part 201 separates from the battery 001, the first end of the push rod 202 remains in contact with the battery 001. Thus, the battery 001 will not be stuck on the clamping part 201 due to the sudden separation of the clamping part 201, thereby eliminating the procedure of manually removing the battery 001 from the clamping part 201 and improving production efficiency.

[0057] In summary, this application proposes a sealing device, comprising: a base, a clamping assembly, and a pressing assembly. After the unsealed opening of the battery passes sequentially through a first through hole in the base and a second through hole formed by the clamping assembly, the clamping assembly can enter a clamping state. At this time, the first end of the push rod and the clamping part jointly apply a clamping force to the battery to ensure that the pressing assembly can effectively perform the pressing operation. During the process of the clamping assembly transitioning from the clamping state to the disengagement state, the clamping part first separates from the battery, and then the first end of the push rod separates from the battery. In this way, when the clamping part separates from the battery, the first end of the push rod still maintains contact with the battery. Thus, the battery will not be stuck on the clamping part due to the sudden separation of the clamping part, thereby eliminating the procedure of manually removing the battery from the clamping part and improving production efficiency.

[0058] It should be noted that after the pressing component 300 in the sealing device 000 moves toward the base 100, the clamping component 200 in the sealing device 000 can switch from a separated state to a clamped state. Conversely, after the pressing component 300 in the sealing device 000 moves away from the base 100, the clamping component 200 in the sealing device 000 can switch from a clamped state to a separated state.

[0059] In the embodiments of this application, Figure 6 This is a cross-sectional view of the clamp assembly in a separated state in another sealing device provided in an embodiment of this application. Figure 7This is a cross-sectional view of the clamp assembly in a separated state in another sealing device provided in the embodiments of this application. Figure 6 and Figure 7 As shown, each clamping part 201 in the clamping assembly 200 may have a connecting hole K3 communicating with the second through hole K2, and the push rod 202 is elastically connected to the clamping part 201 within the connecting hole K3.

[0060] When the clamping assembly 200 in the sealing device 000 is in a separated state, the second end of the push rod 202, which is away from the second through hole K2, protrudes from the side of the clamping part 201 away from the second through hole K2.

[0061] The pressing assembly 300 in the sealing device 000 is configured to move in the direction toward the base 100, so that the pressing assembly 300 first applies a driving force to the second end of the push rod 202 to drive the first end of the push rod 202 to move to the position abutting against the battery 001, and then drives the clamping part 201 to move in the direction toward the battery 001.

[0062] In this configuration, the clamping part 201 is elastically connected to the push rod 202 via the connecting hole K3, allowing the push rod 202 to move flexibly when subjected to the driving force applied by the pressing assembly 300. This not only improves the response speed of the clamping assembly 200 but also ensures that the clamping part 201 can stably and evenly clamp the battery 001, thereby ensuring the reliability of the sealing process.

[0063] Furthermore, after the pressing assembly 300 in the sealing device 000 moves away from the base 100, the clamping assembly 200 can switch from the clamping state to the disengaged state. At this time, the pressing assembly 300 no longer applies driving force to the second end of the push rod 202. Since the push rod 202 and the clamping part 201 are elastically connected through the connecting hole K3, after the clamping assembly 200 switches from the clamping state to the disengaged state, the push rod 202 can automatically reset, causing the second end of the push rod 202 away from the second through hole K2 to protrude from the side of the clamping part 201 away from the second through hole K2.

[0064] For example, such as Figure 6 As shown, the connecting hole K3 in the clamping part 201 may include a first sub-connecting hole K31 and a second sub-connecting hole K32 that are connected. The first sub-connecting hole K31 is closer to the second through hole K2 than the second sub-connecting hole K32, and the inner diameter of the second sub-connecting hole K32 is larger than the inner diameter of the first sub-connecting hole K31, so that an annular limiting surface L can be formed between the first sub-connecting hole K31 and the second sub-connecting hole K32.

[0065] The clamp assembly 200 in the sealing device 000 may further include: a first elastic element 203 located within the second sub-connecting hole K32, one end of the first elastic element 203 abutting against the annular limiting surface L, the first elastic element 203 being sleeved on the push rod 202, and the other end of the first elastic element 203 abutting against the second end of the push rod 202. For example, the first elastic element 203 may be a spring.

[0066] In this way, after the pressing assembly 300 moves in the direction toward the base 100 and applies a driving force to the second end of the push rod 202, the first elastic member 203 can store the elastic force; and after the pressing assembly 300 in the sealing device 000 moves in the direction away from the base 100 and no longer applies a driving force to the second end of the push rod 202, the first elastic member 203 can release the elastic force, thereby enabling the push rod 202 to automatically reset.

[0067] In the embodiments of this application, such as Figure 7 As shown, the pressing assembly 300 in the sealing device 000 may include an outer cylinder 301 and a pressing head 302. One end of the outer cylinder 301 is sleeved on the outer periphery of the clamping assembly 200, and the pressing head 302 is at least distributed inside the outer cylinder 301 and fixedly connected to the other end of the outer cylinder 301. During the movement of the pressing assembly 300 toward the base 100, the outer cylinder 301 first applies a driving force to the second end of the push rod 202, and then applies a driving force to the clamping part 201.

[0068] Here, after the pressing assembly 300 moves toward the base 100, the clamping assembly 200 in the sealing device 000 can switch from a separated state to a clamped state. Furthermore, during the movement of the pressing assembly 300 toward the base 100, the outer cylinder 301 can first apply a driving force to the second end of the push rod 202, allowing the push rod 202 to move entirely toward the battery 001. Only after the second end of the push rod 202 is fully retracted into the connecting hole K3 will the outer cylinder 301 apply a driving force to the clamping part 201, allowing the clamping part 201 to also move toward the battery 001.

[0069] It should be noted that after the second end of the push rod 202 is fully retracted into the connecting hole K3, the first end of the push rod 202 can abut against the battery 001, allowing the first end of the push rod 202 to apply a clamping force to the battery 001. The clamping part 201, driven by the outer cylinder 301, can also move to a position abutting against the battery 001, allowing the clamping part 201 to also apply a clamping force to the battery 001. Here, after both the first end of the push rod 202 and the clamping part 201 apply a clamping force to the battery 001, the clamping assembly 300 is in a clamped state. Furthermore, since the pressing head 302 in the pressing assembly 300 can move together with the outer cylinder 301, after the clamping assembly 300 is in the clamping state and the battery 001 can be clamped by the clamping assembly 300, the pressing head 302 can move to a position that contacts the opening to be sealed of the battery 001, and then press the opening to be sealed of the battery 001 to seal the battery 001.

[0070] Optional, such as Figure 7 As shown, the outer cylinder 301 in the pressing assembly 300 may include a first sub-outer cylinder 3011 and a second sub-outer cylinder 3012 connected to each other. The first sub-outer cylinder 3011 is closer to the base 100, and the inner diameter of the first sub-outer cylinder 3011 is larger than the inner diameter of the second sub-outer cylinder 3012.

[0071] When the clamping assembly 200 is in the separated state, the first sub-outer cylinder 3011 is sleeved on the outer periphery of the clamping assembly 200 and distributed on the side of the second end of the top rod 202 away from the base 100; when the clamping assembly 200 is in the clamped state, the second sub-outer cylinder 3012 is sleeved on the outer periphery of the clamping assembly 200.

[0072] Here, during the movement of the pressing assembly 300 toward the base 100, the first sub-outer cylinder 3011 in the outer cylinder 301 can apply a driving force to the second end of the push rod 202. After the first sub-outer cylinder 3011 moves to the position that completely covers the connecting hole K3, the second end of the push rod 202 can be completely retracted into the connecting hole K3. In this way, the first end of the push rod 202 can abut against the battery 001, so that the first end of the push rod 202 can apply a clamping force to the battery 001. Subsequently, after the second sub-outer cylinder 3012 in the outer cylinder 301 moves to the position that can be sleeved on the clamp assembly 200, the clamping part 201 can abut against the battery 001, so that the clamping part 201 can also apply a clamping force to the battery 001.

[0073] In the embodiments of this application, such as Figure 7As shown, the outer cylinder 301 in the pressing assembly 300 may further include a transition outer cylinder 3013 connecting the first sub-outer cylinder 3011 and the second sub-outer cylinder 3012. The inner wall of the transition outer cylinder 3013 is a first inclined surface S1, and the clamping portion 201 has a second inclined surface S2 that mates with the first inclined surface S1 at its outer edge away from the base 100. For example, the slopes of the first inclined surface S1 and the second inclined surface S2 are the same.

[0074] Here, during the process of the pressing assembly 300 moving in the direction toward the base 100, the first inclined surface S1 and the second inclined surface S2 can come into contact. During the process of the pressing assembly 300 continuously moving in the direction toward the base 100, the second inclined surface S2 can be driven by the first inclined surface S1, thereby causing the clamping part 201 to move toward the battery 001.

[0075] Figure 8 This is a schematic diagram of another base structure provided in an embodiment of this application. Figure 9 This is a schematic diagram of the structure of a clamping assembly provided in an embodiment of this application from another perspective. For example... Figure 8 and Figure 9 As shown, the base 100 in the sealing device 000 has a plurality of first sliding portions 101 on the side facing the clamp assembly 200. The plurality of first sliding portions 101 correspond one-to-one with the plurality of clamping portions 201.

[0076] Each clamping part 201 in the clamping assembly 200 has a second sliding part 2011 on the side facing the base 100 that engages with the corresponding first sliding part 101.

[0077] In this configuration, the first sliding part 101 and the second sliding part 2011 are slidably connected. This allows the clamping part 201 to move smoothly during operation, reducing frictional resistance and improving the durability and operational fluency of the equipment. Furthermore, the slidable connection between the first sliding part 101 and the second sliding part 2011 facilitates the maintenance and replacement of the clamping part 201, reducing equipment maintenance costs.

[0078] In this embodiment of the application, one of the first sliding portion 101 in the base 100 and the second sliding portion 2011 in the clamping portion 201 is a sliding protrusion P, and the other is a sliding groove Q. The sliding protrusion P and the sliding groove Q extend in the same direction and are perpendicular to the through direction of the first through hole K1.

[0079] In this configuration, after the base 100 is connected to the clamp assembly 200, at least a portion of the sliding protrusion P is located within the sliding groove Q. In this case, the cooperation between the sliding protrusion P and the sliding groove Q not only provides a reliable guiding function but also increases the connection strength between the clamping part 201 and the base 100, reduces the shaking of the clamping part 201 during operation, and improves the reliability of the sealing.

[0080] It should be noted that the first sliding part 101 and the second sliding part 2011 can be flexibly designed in a complementary form, that is, the first sliding part 101 and the second sliding part 2011 can be interchanged as a sliding protrusion P or a sliding groove Q; if the first sliding part 101 is designed as a sliding protrusion P, then the second sliding part 2011 matches as a sliding groove Q; conversely, if the first sliding part 101 is designed as a sliding groove Q, then the second sliding part 2011 adapts to a sliding protrusion P. This application does not make specific limitations here.

[0081] Figure 10 yes Figure 3 A partial exploded view of the base and clamping assembly is shown. Figure 10 As shown, the base 100 in the sealing device 000 may have a plurality of fourth through holes K4 distributed circumferentially along the base 100. The plurality of fourth through holes K4 correspond one-to-one with a plurality of clamping parts 201, and the through direction of the fourth through hole K4 is perpendicular to the through direction of the first through hole K1.

[0082] The sealing device 000 also includes a plurality of reset components 400 corresponding to a plurality of fourth through holes K4, each reset component 400 passing through the corresponding fourth through hole K4 and elastically connected to the corresponding clamping part 201.

[0083] In this situation, after the pressing component 300 in the sealing device 000 moves away from the base 100, the clamping component 200 can switch from the clamping state to the disengaged state. At this time, since the reset component 400 is elastically connected to the clamping part 201, the clamping part 201 can be automatically reset, thereby improving the automation level of the equipment and increasing work efficiency.

[0084] In the embodiments of this application, such as Figure 10 As shown, the reset assembly 400 in the sealing device 000 may include: a positioning rod 401, a limiting protrusion 402, and a second elastic member 403. For example, the second elastic member 403 may be a spring.

[0085] One end of the positioning rod 401 passes through the fourth through hole K4 and is fixedly connected to the clamping part 201; the limiting protrusion 402 is connected to one end of the positioning rod 401 away from the clamping part 201; the second elastic member 403 is sleeved on the positioning rod 401, and the two ends of the second elastic member 403 abut against the base 100 and the limiting protrusion 402 respectively.

[0086] Thus, when the pressing assembly 300 moves toward the base 100 and the clamping part 201 moves toward the battery 001, the second elastic member 403 is compressed, allowing the second elastic member 403 to store elastic force. When the pressing assembly 300 moves away from the base 100 and no longer applies driving force to the clamping assembly 200, the second elastic member 403 can release its elastic force, thereby causing the positioning rod 401 to drive the clamping part 201 to reset.

[0087] In the embodiments of this application, please refer to Figure 11 , Figure 11 This is a cross-sectional view of a sealing device provided in an embodiment of this application. When the clamp assembly 200 in the sealing device 000 is in a separated state, the end of the opening to be sealed in the battery 001 can pass through the first through hole K1 and the second through hole K2 in sequence and be positioned opposite to the pressure head 302 in the pressing assembly 300.

[0088] Please refer to Figure 12 , Figure 12 This is a cross-sectional view of another sealing device provided in an embodiment of this application. As the pressing assembly 300 moves toward the base 100, the first sub-outer cylinder 3011 can apply a driving force to the second end of the push rod 202. After the first sub-outer cylinder 3011 moves to the position that completely covers the connecting hole K3, the second end of the push rod 202 can be completely retracted into the connecting hole K3. In this way, the first end of the push rod 202 can abut against the battery 001, so that the first end of the push rod 202 can apply a pressing force to the battery 001.

[0089] Please refer to Figure 13 , Figure 13This is a cross-sectional view of another sealing device provided in this application embodiment. As the pressing assembly 300 continues to move toward the base 100, the second outer cylinder 3012 moves to a position where it can be fitted onto the clamping assembly 200, and the clamping part 201 abuts against the battery 001, so that the clamping part 201 can apply a clamping force to the battery 001. At this time, the second elastic member 403 is compressed, so that the second elastic member 403 can store elastic force. After both the first end of the top rod 202 and the clamping part 201 apply a clamping force to the battery 001, the clamping assembly 300 is in a clamped state. Furthermore, since the pressing head 302 in the pressing assembly 300 can move together with the outer cylinder 301, after the clamping assembly 300 is in the clamping state and the battery 001 can be clamped by the clamping assembly 300, the pressing head 302 can move to a position that contacts the opening to be sealed of the battery 001, and then press the opening to be sealed of the battery 001 to seal the battery 001.

[0090] After the sealing and pressing of battery 001 is completed, as follows: Figure 13 As shown, the pressing assembly 300 can move in a direction away from the base 100. After the pressing assembly 300 moves in a direction away from the base 100 until the first inclined surface S1 and the second inclined surface S2 are completely separated from each other, the stored elastic force of the second elastic element 403 is released, thereby causing the positioning rod 401 to drive the clamping part 201 away from the battery 001. As the pressing assembly 300 continues to move in a direction away from the base 100 until the connecting hole K2 is fully exposed, the first outer cylinder 3011 no longer applies driving force to the second end of the push rod 202, causing the first end of the push rod 202 to separate from the battery 001 under the action of the first elastic element 203.

[0091] In summary, this application proposes a sealing device, comprising: a base, a clamping assembly, and a pressing assembly. After the unsealed opening of the battery passes sequentially through a first through hole in the base and a second through hole formed by the clamping assembly, the clamping assembly enters a clamping state. At this time, the first end of the push rod and the clamping part jointly apply a clamping force to the battery to ensure that the pressing assembly can effectively perform the pressing operation. During the process of the clamping assembly transitioning from the clamping state to the disengagement state, the clamping part first separates from the battery, and then the first end of the push rod separates from the battery. In this way, when the clamping part separates from the battery, the first end of the push rod still maintains contact with the battery. Thus, the battery will not be stuck on the clamping assembly due to the sudden separation of the clamping part, thereby ensuring the smooth operation of automated production and improving production efficiency.

[0092] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0093] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A sealing device, characterized in that, include: Base (100), clamp assembly (200) and pressing assembly (300); The base (100) has a first through hole (K1); The clamp assembly (200) is located on one side of the base (100), and the clamp assembly (200) includes: a plurality of clamping parts (201) and a plurality of push rods (202) corresponding to the plurality of clamping parts (201). The plurality of clamping parts (201) are used to form a second through hole (K2) communicating with the first through hole (K1). Each clamping part (201) is movably connected to the base (100), and each clamping part (201) is movably connected to the corresponding push rod (202). The pressing assembly (300) is located on the side of the clamp assembly (200) away from the base (100) and is sleeved on the outer periphery of the clamp assembly (200). The pressing assembly (300) is configured to press the opening to be sealed in the battery (001) after the end of the battery (001) with the opening to be sealed passes through the first through hole (K1) and the second through hole (K2) in sequence. The clamping assembly (200) has a clamping state and a disengaged state. When the clamping assembly (200) is in the clamping state, the first end of the push rod (202) closer to the second through hole (K2) and the clamping part (201) are both used to apply clamping force to the battery (001). During the process of the clamping assembly (200) switching from the clamping state to the disengaged state, the clamping part (201) first separates from the battery (001), and then the first end of the push rod (202) separates from the battery (001).

2. The sealing device according to claim 1, characterized in that, Each of the clamping parts (201) has a connecting hole (K3) communicating with the second through hole (K2), and the push rod (202) is elastically connected to the clamping part (201) in the connecting hole (K3); Wherein, after the clamp assembly (200) is in the separated state, the second end of the push rod (202) away from the second through hole (K2) protrudes from the side of the clamping part (201) away from the second through hole (K2); The pressing assembly (300) is configured to move in a direction toward the base (100), such that the pressing assembly (300) first applies a driving force to the second end of the push rod (202) to drive the first end of the push rod (202) to move to a position abutting against the battery (001), and then drives the clamping part (201) to move in a direction toward the battery (001).

3. The sealing device according to claim 2, characterized in that, The connecting hole (K3) includes a first sub-connecting hole (K31) and a second sub-connecting hole (K32) that are connected to each other. The first sub-connecting hole (K31) is closer to the second through hole (K2) than the second sub-connecting hole (K32), and the inner diameter of the second sub-connecting hole (K32) is larger than the inner diameter of the first sub-connecting hole (K31), so that an annular limiting surface (L) can be formed between the first sub-connecting hole (K31) and the second sub-connecting hole (K32). The clamp assembly (200) further includes: a first elastic element (203) located in the second sub-connecting hole (K32), one end of the first elastic element (203) abutting against the annular limiting surface (L), the first elastic element (203) being sleeved on the top rod (202), and the other end of the first elastic element (203) abutting against the second end of the top rod (202).

4. The sealing device according to claim 2, characterized in that, The pressing assembly (300) includes an outer cylinder (301) and a pressing head (302). One end of the outer cylinder (301) is sleeved on the outer periphery of the clamp assembly (200). The pressing head (302) is distributed at least inside the outer cylinder (301) and is fixedly connected to the other end of the outer cylinder (301). During the movement of the pressing assembly (300) toward the base (100), the outer cylinder (301) first applies a driving force to the second end of the top rod (202), and then applies a driving force to the clamping part (201).

5. The sealing device according to claim 4, characterized in that, The outer cylinder (301) includes: a first sub-outer cylinder (3011) and a second sub-outer cylinder (3012) connected to each other; the first sub-outer cylinder (3011) is closer to the base (100), and the inner diameter of the first sub-outer cylinder (3011) is larger than the inner diameter of the second sub-outer cylinder (3012); Wherein, after the clamp assembly (200) is in the separated state, the first sub-outer cylinder (3011) is sleeved on the outer periphery of the clamp assembly (200) and distributed on the side of the second end of the top rod (202) away from the base (100); after the clamp assembly (200) is in the clamped state, the second sub-outer cylinder (3012) is sleeved on the outer periphery of the clamp assembly (200).

6. The sealing device according to claim 5, characterized in that, The outer cylinder (301) further includes: a transition sub-outer cylinder (3013) connecting the first sub-outer cylinder (3011) and the second sub-outer cylinder (3012), the inner wall of the transition sub-outer cylinder (3013) being a first inclined surface (S1), and the clamping part (201) having a second inclined surface (S2) cooperating with the first inclined surface (S1) on the outer edge away from the base (100).

7. The sealing device according to any one of claims 1 to 6, characterized in that, The base (100) has a plurality of first sliding portions (101) on the side facing the clamp assembly (200), and the plurality of first sliding portions (101) correspond one-to-one with the plurality of clamping portions (201); Each of the clamping portions (201) has a second sliding portion (2011) on the side facing the base (100) that engages with the corresponding first sliding portion (101); The first sliding part (101) is slidably connected to the second sliding part (2011).

8. The sealing device according to claim 7, characterized in that, One of the first sliding portion (101) and the second sliding portion (2011) is a sliding protrusion (P), and the other is a sliding groove (Q); Wherein, after the base (100) is connected to the clamp assembly (200), at least a portion of the sliding protrusion (P) is located within the sliding groove (Q).

9. The sealing device according to any one of claims 1 to 4, characterized in that, The base (100) has a plurality of fourth through holes (K4) distributed circumferentially along the base (100), the plurality of fourth through holes (K4) correspond one-to-one with the plurality of clamping parts (201), and the through direction of the fourth through hole (K4) is perpendicular to the through direction of the first through hole (K1). The sealing device further includes a plurality of reset components (400) corresponding one-to-one with the plurality of fourth through holes (K4), each of the reset components (400) passing through the corresponding fourth through hole (K4) and elastically connected to the corresponding clamping part (201).

10. The sealing device according to claim 9, characterized in that, The reset assembly (400) includes: a positioning rod (401), a limiting protrusion (402), and a second elastic element (403); One end of the positioning rod (401) passes through the fourth through hole (K4) and is fixedly connected to the clamping part (201); the limiting protrusion (402) is connected to the end of the positioning rod (401) away from the clamping part (201); the second elastic member (403) is sleeved on the positioning rod (401), and the two ends of the second elastic member (403) abut against the base (100) and the limiting protrusion (402) respectively.

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