Clamp, welding device and battery production equipment

Abstract

The utility model relates to the technical field of battery production, in particular to a clamp, a welding device and battery production equipment. The clamp is used for fixing the electrode assembly and comprises a clamping assembly and a limiting assembly, the clamping assembly comprises a clamping part, the clamping part is used for clamping the electrode assembly and has a rotating state and a static state, and the clamping part can be switched between the rotating state and the static state; the limiting assembly comprises a telescopic limiting piece, and the limiting piece has a contraction state and an extension state and can be switched between the contraction state and the extension state; wherein the limiting piece is configured to be in a contraction state and located outside the clamping part when the clamping part is in a rotating state; the limiting piece is further configured to be in an extending state when the clamping part is in a static state, and at least part of the limiting piece can be inserted into the containing space defined by the clamping part so as to limit the position of the electrode assembly.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a clamp, a welding device and battery production equipment. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] In the pre-welding process of the battery production process, the top cover and the shell of the electrode assembly need to be welded together. Usually, a clamp is used to clamp the electrode assembly, and the clamp includes a clamping assembly, wherein the clamping assembly is used to clamp the end of the electrode assembly. After the welding is completed, the clamping assembly needs to be retracted to release the electrode assembly.

[0004] However, when the clamping assembly is retracted, it is easy to cause the electrode assembly to move, resulting in the electrode assembly falling. Utility Model Content

[0005] In view of the above problems, the present application provides a clamp, a welding device and a battery production equipment, which solve the problem that the electrode assembly moves when the clamping part retracts, causing the electrode assembly to fall.

[0006] The first aspect of the present application provides a clamp for fixing an electrode assembly, the clamp comprising:

[0007] A clamping assembly, the clamping assembly comprising a clamping portion, the clamping portion being used to clamp the electrode assembly and having a rotating state and a stationary state, the clamping portion being capable of switching between the rotating state and the stationary state; and

[0008] A limit assembly, the limit assembly includes a retractable limit member, the limit member has a retracted state and an extended state, and can be switched between the retracted state and the extended state;

[0009] Among them, the limit member is configured so that when the clamping part is in a rotating state, the limit member is in a retracted state and is located outside the clamping part; and the limit member is also configured so that when the clamping part is in a stationary state, the limit member is in an extended state, and at least part of the limit member can be inserted into the accommodating space enclosed by the clamping part to limit the position of the electrode assembly.

[0010] The clamp of the embodiment of the present application is provided with a clamping assembly and a limiting assembly, wherein the clamping assembly includes a clamping part, which can clamp the electrode assembly, and the limiting assembly includes a retractable limiting member, and when the clamping part is in a rotating state, the limiting member is in a contracted state and is located outside the clamping part, and will not affect the operation of the clamping part. When the clamping part is in a stationary state, the limiting member is in an extended state, and at least part of the limiting member can be inserted into the accommodating space surrounded by the clamping part to limit the position of the electrode assembly, then the limiting member can form a block to the electrode assembly, reduce the probability of the clamping assembly driving the electrode assembly to move during the retraction process, and thus reduce the probability of the electrode assembly falling.

[0011] In some embodiments of the present application, the limiting assembly further includes a driving member, which is used to drive the limiting member to move along a first direction, and the first direction is arranged to intersect with the axial direction of the clamping assembly.

[0012] The embodiment of the present application uses a driving member for driving a limiting member to move along a first direction, wherein the first direction is arranged to intersect with the axial direction of the clamping assembly. The electrode assembly can be limited from one axial end of the electrode assembly to reduce the probability of movement of the electrode assembly without affecting the clamping process of the electrode assembly.

[0013] In some embodiments of the present application, the limiting assembly further includes a mounting member, which is connected to the driving member and is used to install the limiting member.

[0014] In the embodiment of the present application, a mounting member connected to the driving member is provided, wherein the mounting member is used to install a limiting member. Then, the driving member can be installed through the mounting member, thereby achieving fixed installation of the driving member.

[0015] In some embodiments of the present application, the mounting member includes a first mounting plate and a second mounting plate connected in sequence along a first direction, wherein the first mounting plate is connected to the driving member, and the second mounting plate is used to install the limiting member.

[0016] The embodiment of the present application arranges a first mounting plate and a second mounting plate connected in sequence along a first direction, wherein the first mounting plate is connected to the driving member and the second mounting plate is used to install the limiting member, thereby facilitating the connection with the driving member and the installation of the limiting member.

[0017] In some embodiments of the present application, a mounting groove is provided on the second mounting plate, and the limiting member includes a first limiting plate and a second limiting plate connected to each other, and the first limiting plate and the second limiting plate are arranged at an angle, wherein the first limiting plate is arranged in the mounting groove, and the second limiting plate extends in the direction of the clamping portion.

[0018] In an embodiment of the present application, a mounting groove is provided on the second mounting plate, and the limiting member includes a first limiting plate and a second limiting plate which are connected to each other, wherein the first limiting plate and the second limiting plate are arranged at an angle, wherein the first limiting plate is arranged in the mounting groove, and the second limiting plate extends in the direction of the clamping portion. The second limiting plate can be inserted into the accommodating space enclosed by the clamping portion by moving the second mounting plate along the first direction, thereby realizing axial limitation of the electrode assembly.

[0019] In some embodiments of the present application, a first mounting hole is provided on the second mounting plate, and the first mounting hole is located at the bottom of the mounting groove, wherein the number of the first mounting holes is at least two, and at least two first mounting holes are arranged at axial intervals along the clamping portion; a connecting hole is provided on the first limiting plate, and the connecting hole is arranged opposite to the first mounting hole.

[0020] In an embodiment of the present application, at least two first mounting holes are provided on the second mounting plate at axial intervals along the clamping portion, wherein the first mounting hole is located at the bottom of the mounting groove, and a connecting hole is provided on the first limiting plate that is opposite to the first mounting hole. The first limiting plate and the second mounting plate can be connected by connecting with different first mounting holes through the connecting hole, thereby realizing the connection between the first limiting plate and the second mounting plate, and the installation position of the first limiting plate on the second mounting plate can be adjusted, thereby adapting to electrode assemblies of different specifications.

[0021] In some embodiments of the present application, the connecting hole is a strip-shaped hole, and the extending direction of the strip-shaped hole is the same as the axial direction of the clamping portion.

[0022] In the embodiment of the present application, by configuring the connection hole as a strip hole, and the extension direction of the strip hole is the same as the axial direction of the clamping portion, the installation position of the first limiting plate in the installation groove can be easily adjusted to accommodate electrode assemblies of different specifications.

[0023] In some embodiments of the present application, at least a portion of the surface of the limiting member is a smooth surface.

[0024] In the embodiment of the present application, by setting at least part of the surface of the limiter to a smooth surface, the limiter can be made less likely to get stuck during extension and retraction, thereby reducing the chance of scratching the clamping portion or the top cover of the electrode assembly.

[0025] In some embodiments of the present application, the fixture further includes: a base, a mounting frame and a mounting member.

[0026] There are at least two mounting frames, and the two mounting frames are arranged on the base at intervals; the mounting member is arranged on the mounting frame, and a limiting component is installed on the mounting member.

[0027] The embodiments of the present application can achieve stable installation of the clamping assembly by providing a base, a mounting frame and a mounting member, and can fix the electrode assembly from at least two positions and limit the electrode assembly from two positions.

[0028] In some embodiments of the present application, the number of the clamping assemblies is at least two, each mounting frame is provided with a clamping assembly, and each clamping assembly is provided with a limiting assembly below along the first direction.

[0029] In the embodiment of the present application, the number of clamping assemblies is at least two, a clamping assembly is provided on each mounting frame, and a limiting assembly is provided below each clamping assembly along the first direction, so that the electrode assembly can be limited from multiple positions.

[0030] A second aspect of the present application provides a welding device for welding an electrode assembly, the welding device comprising:

[0031] A clamp as described in the above embodiment;

[0032] and a welder for welding the electrode assembly clamped by the clamping assembly of the clamp.

[0033] A third aspect of the present application provides a battery production device, comprising the welding device as described in the above embodiments.

[0034] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0036] Figure 1 A schematic diagram of the structure of a clamp provided in some embodiments of the present application;

[0037] Figure 2 A schematic structural diagram of a welding device provided in some embodiments of the present application;

[0038] Figure 3 for Figure 2 A partial enlarged structural diagram of the welding device at position A shown in FIG. 1 (the limit assembly is in an extended state);

[0039] Figure 4 for Figure 3 A schematic diagram of the structure of the welding device shown in FIG. 1 when the limiting assembly is in a retracted state;

[0040] Figure 5 for Figure 4 A schematic diagram of the three-dimensional structure of the limiting assembly of the welding device shown in FIG.

[0041] Figure 6 for Figure 5 A schematic diagram of the installation structure of the limiting member of the limiting assembly shown in FIG. 1 on the second mounting plate;

[0042] Figure 7 for Figure 6 A schematic diagram of the structure of the limiting member in FIG.

[0043] Figure 8 for Figure 6 Schematic diagram of the structure of the second mounting plate.

[0044] The reference numerals are as follows:

[0045] 1000. Welding equipment;

[0046] 100. Clamp;

[0047] 10. Clamping assembly; 11. Clamping portion; 111. Clamping claw; 1111. Clamping section; 1112. Connecting section; 112. Accommodating space; 1121. Clamping space; 1122. Insertion space; 12. Motor;

[0048] 20. Limiting assembly; 21. Limiting member; 211. First limiting plate; 2111. Connecting hole; 212. Second limiting plate; 2121. Through hole; 22. Driving member; 23. Mounting member; 231. First mounting plate; 232. Second mounting plate; 2321. Mounting groove; 2322. First mounting hole; 2323. Second mounting hole; 24. Support plate;

[0049] 30. Base;

[0050] 40. Mounting frame;

[0051] 50. Mounting parts;

[0052] 60. Clamping cylinder;

[0053] 70. Rotating assembly;

[0054] 200, welding machine; 201, welding head;

[0055] 300. Installation table. DETAILED DESCRIPTION

[0056] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0058] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0059] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0060] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0061] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0062] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0063] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0064] At present, from the perspective of market development, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application areas, its market demand is also constantly expanding.

[0065] The battery involved in the embodiment of the present application can be used in, but not limited to, electric devices such as vehicles, ships or aircraft. The battery comprising the battery cell, battery pack, etc. involved in the present application can be used to form the electric device.

[0066] In the embodiments of the present application, the electric devices using batteries as power sources may be, but are not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0067] It should be understood that the technical solution described in the embodiments of the present application is not limited to the batteries described above, but can also be applied to all batteries including a box and electrical equipment using the battery.

[0068] In the pre-welding process of the battery production process, the top cover and the shell of the electrode assembly need to be welded together. Usually, a clamp is used to clamp the electrode assembly, and the clamp includes a clamping assembly, wherein the clamping assembly is used to clamp the end of the electrode assembly. After the welding is completed, the clamping assembly needs to be retracted to release the electrode assembly.

[0069] However, when the clamping assembly is retracted, it is easy to cause the electrode assembly to move, resulting in the electrode assembly falling.

[0070] In order to solve this problem, an embodiment of the present application proposes a clamp, which includes a clamping assembly and a limiting assembly. The clamping assembly includes a clamping portion, which is used to clamp the electrode assembly and has a rotating state and a stationary state, and the clamping portion can switch between the rotating state and the stationary state; the limiting assembly includes a retractable limiting member, which has a retracted state and an extended state and can switch between the retracted state and the extended state; when the clamping portion is in a rotating state, the limiting member is in a retracted state and is located outside the clamping portion; in addition, when the clamping portion is in a stationary state, the limiting member is in an extended state, and at least a part of the limiting member can be inserted into the accommodating space enclosed by the clamping portion to limit the position of the electrode assembly, so that when the clamping portion is in a stationary state and needs to be retracted, the electrode assembly can be limited, thereby reducing the probability of the electrode assembly falling off after being driven by the clamping portion.

[0071] The clamp in the embodiment of the present application can be used on a welding device, and can also be installed on other devices that require clamping and limiting.

[0072] The structure in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0073] The first aspect of the present application provides a clamp 100, such as Figure 1 As shown, the clamp 100 is used to fix the electrode assembly, and includes a clamping assembly 10 and a limiting assembly 20. The clamping assembly 10 includes a clamping portion 11, and the clamping portion 11 is used to clamp the electrode assembly and has a rotating state and a stationary state, and the clamping portion 11 can switch between the rotating state and the stationary state; the limiting assembly 20 includes a retractable limiting member 21, and the limiting member 21 has a retracted state and an extended state, and can switch between the retracted state and the extended state; wherein the limiting member 21 is configured so that when the clamping portion 11 is in the rotating state, the limiting member 21 is in the retracted state and is located outside the clamping portion 11; and the limiting member 21 is also configured so that when the clamping portion 11 is in the stationary state, the limiting member 21 is in the extended state, and at least a portion of the limiting member 21 can be inserted into the accommodating space 112 surrounded by the clamping portion 11 to define the position of the electrode assembly.

[0074] It should be noted that the clamping assembly 10 has multiple states. When the clamping portion 11 is in a rotating state, the pre-welding between the shell and the top cover of the electrode assembly can be achieved by cooperating with the welder 200. When the pre-welding is completed, the clamping portion 11 stops rotating and is in a stationary state in the circumferential direction. At this time, it needs to be retracted axially, that is, along the Figure 2 The electrode assembly moves to the left in the XX direction to release the electrode assembly. In this process, the electrode assembly is easily driven to move to the left in the XX direction. Therefore, in this application, a limit assembly 20 is set at the left end of the electrode assembly along the XX direction to limit the electrode assembly along the XX direction and reduce the probability of the electrode assembly moving to the left in the XX direction. This is for the clamping assembly 10 on the left side. For the clamping assembly 10 on the right side, the limit assembly 20 is set at the right end of the electrode assembly along the XX direction.

[0075] In addition, the limiting member 21 here has a retracted state and an extended state, and can be switched between the two states.

[0076] The clamp 100 of the embodiment of the present application is provided with a clamping assembly 10 and a limiting assembly 20, wherein the clamping assembly 10 includes a clamping portion 11, which can clamp the electrode assembly, and the limiting assembly 20 includes a retractable limiting member 21. When the clamping portion 11 is in a rotating state, the limiting member 21 is in a retracted state and is located outside the clamping portion 11, and will not affect the operation of the clamping portion 11. When the clamping portion 11 is in a stationary state, the limiting member 21 is in an extended state, and at least part of the limiting member 21 can be inserted into the accommodating space 112 surrounded by the clamping portion 11 to limit the position of the electrode assembly, and the limiting member 21 can form a barrier to the electrode assembly, thereby reducing the probability of the clamping assembly 10 driving the electrode assembly to move during the retraction process, thereby reducing the probability of the electrode assembly falling.

[0077] The following will be combined Figures 2 to 8 The specific structure of the clamp 100 is described in detail.

[0078] In some embodiments of the present application, Figures 2 to 4 As shown, the limiting component 20 further includes a driving member 22 , and the driving member 22 is used to drive the limiting component 21 to move along a first direction, and the first direction is arranged to intersect with the axial direction of the clamping component 10 .

[0079] The driving member 22 here is a component that can drive the limiting member 21 to move along the ZZ direction, and can be a power component such as a cylinder or a hydraulic cylinder. The first direction here is the ZZ direction, and the XX direction is the axial direction of the clamping assembly 10, that is, the axial direction of the electrode assembly.

[0080] It should be noted that the electrode assembly is usually a cylindrical structure, the end along the circumferential direction is a top cover, and the side of the cylinder is a shell. Therefore, the axial direction of the electrode assembly is consistent with the axial direction of the clamping assembly 10.

[0081] The embodiment of the present application uses a driving member 22 for driving the limiting member 21 to move along a first direction, wherein the first direction is arranged to intersect with the axial direction of the clamping assembly 10, so that the electrode assembly can be limited from one axial end of the electrode assembly, thereby reducing the probability of movement of the electrode assembly without affecting the clamping process of the electrode assembly.

[0082] Alternatively, if Figure 2 and Figure 3 As shown, the limiting component 20 further includes a mounting member 23 , which is connected to the driving member 22 and is used to mount the limiting member 21 .

[0083] The mounting member 23 here is a structure capable of realizing the installation of the limiting member 21 . Considering that the limiting member 21 is relatively small in size, the mounting member 23 is added in order to be able to drive the limiting member 21 to move along the first direction through the driving member 22 .

[0084] In the embodiment of the present application, a mounting member 23 connected to the driving member 22 is provided, wherein the mounting member 23 is used to install the limiting member 21 . Then, the driving member 22 can be installed through the mounting member 23 , thereby achieving fixed installation of the driving member 22 .

[0085] Alternatively, if Figures 5 to 7 As shown, the mounting member 23 includes a first mounting plate 231 and a second mounting plate 232 sequentially connected along a first direction, wherein the first mounting plate 231 is connected to the driving member 22 , and the second mounting plate 232 is used to mount the limiting member 21 .

[0086] The first mounting plate 231 is a flat plate structure, which can realize the function of the adapter plate, and the second mounting plate 232 is a plate structure, which can realize the installation of the limit member 21.

[0087] The embodiment of the present application arranges a first mounting plate 231 and a second mounting plate 232 which are sequentially connected along a first direction, wherein the first mounting plate 231 is connected to the driving member 22, and the second mounting plate 232 is used to install the limiting member 21, thereby facilitating the connection with the driving member 22 and the installation of the limiting member 21.

[0088] Alternatively, if Figure 7 and Figure 8As shown, a mounting groove 2321 is provided on the second mounting plate 232, and the limiting member 21 includes a first limiting plate 211 and a second limiting plate 212 connected to each other, and the first limiting plate 211 and the second limiting plate 212 are arranged at an angle, wherein the first limiting plate 211 is arranged in the mounting groove 2321, and the second limiting plate 212 extends in the direction of the clamping portion 11.

[0089] It should be noted that the mounting groove 2321 here is a U-shaped groove structure, and the second limiting plate 212 can play a role in blocking the electrode assembly.

[0090] In addition, in order to support the electrode assembly, the fixture 100 further includes a support plate 24 , and the support plate 24 is fixed on the second limiting plate 212 to support the electrode assembly.

[0091] It should be noted that the end of the support plate 24 facing the electrode assembly is lower than the end of the second limiting plate 212 along the ZZ direction, so that the electrode assembly can be blocked along the XX direction by the second limiting plate 212. In addition, the movement of the support plate 24 along the ZZ direction is consistent with the movement of the second limiting plate 212.

[0092] In an embodiment of the present application, a mounting groove 2321 is provided on the second mounting plate 232, and the limiting member 21 includes a first limiting plate 211 and a second limiting plate 212 which are connected to each other, wherein the first limiting plate 211 and the second limiting plate 212 are arranged at an angle, wherein the first limiting plate 211 is arranged in the mounting groove 2321, and the second limiting plate 212 extends in the direction of the clamping portion 11. The second limiting plate 212 can be inserted into the accommodating space 112 surrounded by the clamping portion 11 by moving the second mounting plate 232 along the first direction, thereby realizing the axial limitation of the electrode assembly.

[0093] Optionally, the second limiting plate 212 is provided with through holes 2121 , wherein the number of the through holes 2121 is two and they are spaced apart along the direction of the second limiting plate 212 .

[0094] It should be emphasized that the clamping portion 11 includes a plurality of claws 111 arranged at intervals along the circumferential direction, and there is a gap between two adjacent claws 111, and the limit member 21 can be inserted into the accommodating space 112 from the gap, wherein the claw 111 includes a clamping section 1111 and a connecting section 1112 along the XX direction, wherein the clamping section 1111 is used to clamp the electrode assembly, and the connecting section 1112 is connected to the motor 12, and the motor 12 can be used to control the claw 111 to move along the XX direction, wherein the movement toward the direction of the electrode assembly is an extension movement, and the movement away from the direction of the electrode assembly is a retraction movement.

[0095] like Figure 3 and Figure 4As shown, the accommodating space 112 includes a clamping space 1121 and an insertion space 1122. The clamping space 1121 and the insertion space 1122 are in a connected state. The clamping space 1121 is used to clamp the electrode assembly. The limiting member 21 is inserted into the insertion space 1122, thereby forming a limit for the electrode assembly along the XX direction.

[0096] Alternatively, if Figure 8 As shown, a first mounting hole 2322 is provided on the second mounting plate 232, and the first mounting hole 2322 is located at the bottom of the mounting groove 2321, wherein the number of the first mounting holes 2322 is at least two, and at least two first mounting holes 2322 are arranged at axial intervals along the clamping portion 11; a connecting hole 2111 is provided on the first limiting plate 211, and the connecting hole 2111 is arranged opposite to the first mounting hole 2322.

[0097] exist Figure 8 In the embodiment, there are three first mounting holes 2322 in total, and the three first mounting holes 2322 are arranged at intervals along the XX direction, so that the installation position of the first limiting plate 211 in the mounting groove 2321 can be adjusted by connecting the first mounting holes 2322 at different positions with the connecting hole 2111.

[0098] It should be noted that the first mounting hole 2322 is a circular hole, which can facilitate the connection of the connecting hole 2111 and the first mounting hole 2322 using bolts and other components, thereby achieving the connection between the first limiting plate 211 and the second mounting plate 232 and fixing the first limiting plate 211.

[0099] In the embodiment of the present application, at least two first mounting holes 2322 are arranged on the second mounting plate 232 at axial intervals along the clamping portion 11, wherein the first mounting hole 2322 is located at the bottom of the mounting groove 2321, and a connecting hole 2111 is arranged on the first limiting plate 211 and is opposite to the first mounting hole 2322. The first limiting plate 211 and the second mounting plate 232 can be connected through the connecting hole 2111 to connect with different first mounting holes 2322, thereby realizing the connection between the first limiting plate 211 and the second mounting plate 232, and the installation position of the first limiting plate 211 on the second mounting plate 232 can be adjusted, so as to adapt to electrode assemblies of different specifications.

[0100] Optionally, the second mounting plate 232 is further provided with a second mounting hole 2323, wherein the second mounting holes 2323 are arranged on both sides of the second mounting plate 232 along the YY direction for fixing the second mounting plate 232, wherein the number of the second mounting holes 2323 is four, wherein two second mounting holes 2323 and another two second mounting holes 2323 are symmetrically arranged.

[0101] Optionally, the connecting hole 2111 is a strip-shaped hole, and the extending direction of the strip-shaped hole is the same as the axial direction of the clamping portion 11 .

[0102] Among them, the strip hole can be a rectangular hole or a runway-shaped structure, so that the installation position of the first limiting plate 211 in the installation groove 2321 can be adjusted, which is convenient for adjusting the position of the first limiting plate 211 for electrode assemblies of different specifications.

[0103] In the embodiment of the present application, by setting the connecting hole 2111 as a strip hole, and the extension direction of the strip hole is the same as the axial direction of the clamping portion 11, the installation position of the first limiting plate 211 in the installation groove 2321 can be easily adjusted to adapt to electrode assemblies of different specifications.

[0104] Optionally, at least part of the surface of the stopper 21 is a smooth surface. Specifically, the surface of the stopper 21 can be polished to obtain a smooth surface.

[0105] The embodiments of the present application can reduce the possibility of the limiter 21 getting stuck during extension and retraction by setting at least part of the surface of the limiter 21 to a smooth surface. For example, during the switching process between the extended state and the retracted state, the probability of the limiter 21 scratching the clamping part 11 or the top cover of the electrode assembly is reduced.

[0106] Alternatively, if Figure 1 to Figure 2 As shown, the clamp 100 also includes a base 30, a mounting frame 40 and a mounting member 50. There are at least two mounting frames 40, and the two mounting frames 40 are spaced apart on the base 30; the mounting member 50 is disposed on the mounting frame 40, and a limiting assembly 20 is installed on the mounting member 50.

[0107] The mounting member 50 here may be a mounting plate, on which the driving member 22 of the limit assembly 20 is mounted. The mounting frame 40 here may be a frame structure, or a structure surrounded by a plate-like structure.

[0108] The embodiment of the present application can achieve stable installation of the clamping assembly 10 by providing a base 30, a mounting frame 40 and a mounting member 50, and can fix the electrode assembly from at least two positions and limit the electrode assembly from two positions.

[0109] exist Figure 1 In the embodiment, the number of mounting racks 40 is two, or may be three or more. When there are three mounting racks 40, two electrode assemblies can be clamped at the same time.

[0110] Optionally, the number of the clamping assemblies 10 is at least two, a clamping assembly 10 is disposed on each mounting frame 40 , and a limiting assembly 20 is disposed below each clamping assembly 10 along the first direction.

[0111] The two limiting components 20 can work simultaneously, so that the two positions of the electrode component can be welded simultaneously, and after the welding is completed, the electrode component can be released simultaneously.

[0112] In the embodiment of the present application, the number of clamping assemblies 10 is at least two, and each mounting frame 40 is provided with a clamping assembly 10. Each clamping assembly 10 is provided with a limiting assembly 20 below along the first direction, so that the electrode assembly can be limited from multiple positions.

[0113] Optionally, the clamp 100 further includes two clamping cylinders 60 , and each clamping cylinder 60 can adjust the position of the clamping assembly 10 along the XX direction.

[0114] In addition, it should be noted that the extended state and the retracted state of the limit assembly 20 are coordinated with the switching of the rotation state and the static state of the clamping part 11, so that the limit assembly 20 is inserted into the insertion space 1122 through the gap between the claws 111 when in the extended state. This can be achieved through the linkage cooperation of the controller. This is a common technology and will not be described in detail here.

[0115] Optionally, the fixture 100 further includes two rotating assemblies 70 for rotating the electrode assembly.

[0116] It should be noted that the claw 111 here can move along the XX direction, and the inner diameter surrounded by the clamping section 1111 is slightly larger than the outer diameter of the electrode assembly. For example, the inner diameter surrounded by the clamping section 1111 is about 0.1mm larger than the outer diameter of the electrode assembly, such as 0.05mm.

[0117] The second aspect of the present application provides a welding device 1000, such as Figure 2 and Figure 3 As shown, the welding device 1000 is used for welding electrode assemblies. The welding device 1000 includes the clamp 100 as in the above embodiment and a welder 200 . The welder 200 is used for welding the electrode assembly clamped by the clamping assembly 10 of the clamp 100 .

[0118] The welder 200 may be a laser welding system. There are two welders 200 . Each welder 200 includes a welding head 201 . The welding heads 201 of the two welders 200 may respectively weld the two axial ends of the electrode assembly simultaneously.

[0119] The YY direction is the front-to-back direction of the welding device 1000 .

[0120] When Figure 4As shown, when the limiting assembly 20 is in the extended state, the limiting member 21 can limit the electrode assembly along the axial direction, such as Figure 5 As shown, when the limiting component 20 is in the contracted state, the limiting member 21 will not affect the rotation of the clamping portion 11, so that the electrode assembly can be rotated under the action of the clamping portion 11 to achieve pre-welding of the electrode assembly.

[0121] Optionally, the welding device 1000 further includes a mounting platform 300 , which is located on the top of the mounting frame 40 . A component for moving the welder 200 may be disposed on the mounting platform 300 to achieve movement of the welder 200 .

[0122] The third aspect of the present application provides a battery production device, including the welding device 1000 described in the above embodiment. The battery production device here also includes other equipment used in the battery production process, such as a winding device and a detection device, etc. No further introduction will be given here.

[0123] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0124] The clamp 100 of the embodiment of the present application is used to fix the electrode assembly. The clamp 100 includes a clamping assembly 10 and a limiting assembly 20. The clamping assembly 10 includes a clamping portion 11. The clamping portion 11 is used to clamp the electrode assembly and has a rotating state and a stationary state. The clamping portion 11 can switch between the rotating state and the stationary state; the limiting assembly 20 includes a retractable limiting member 21. The limiting member 21 has a retracted state and an extended state, and can switch between the retracted state and the extended state.

[0125] Among them, the limit member 21 is configured that when the clamping portion 11 is in a rotating state, the limit member 21 is in a retracted state and is located outside the clamping portion 11; and the limit member 21 is also configured that when the clamping portion 11 is in a stationary state, the limit member 21 is in an extended state, and at least part of the limit member 21 can be inserted into the accommodating space 112 surrounded by the clamping portion 11 to limit the position of the electrode assembly.

[0126] In some embodiments of the present application, the limiting component 20 further includes a driving member 22 , and the driving member 22 is used to drive the limiting component 21 to move along a first direction, and the first direction is arranged to intersect with the axial direction of the clamping component 10 .

[0127] Furthermore, the limiting component 20 also includes a mounting member 23 , which is connected to the driving member 22 and is used to install the limiting member 21 .

[0128] Further, the mounting member 23 includes a first mounting plate 231 and a second mounting plate 232 which are sequentially connected along a first direction, wherein the first mounting plate 231 is connected to the driving member 22 , and the second mounting plate 232 is used to mount the limiting member 21 .

[0129] Furthermore, a mounting groove 2321 is provided on the second mounting plate 232, and the limiting member 21 includes a first limiting plate 211 and a second limiting plate 212 which are connected to each other, and the first limiting plate 211 and the second limiting plate 212 are arranged at an angle, wherein the first limiting plate 211 is arranged in the mounting groove 2321, and the second limiting plate 212 extends in the direction of the clamping portion 11.

[0130] Further, the second mounting plate 232 is provided with a first mounting hole 2322, and the first mounting hole 2322 is located at the bottom of the mounting groove 2321, wherein the number of the first mounting holes 2322 is at least two, and the at least two first mounting holes 2322 are spaced apart along the axial direction of the clamping portion 11;

[0131] The first limiting plate 211 is provided with a connecting hole 2111 , and the connecting hole 2111 is arranged opposite to the first mounting hole 2322 .

[0132] Furthermore, the connecting hole 2111 is a strip-shaped hole, and the extending direction of the strip-shaped hole is the same as the axial direction of the clamping portion 11 .

[0133] Furthermore, at least a portion of the surface of the limiting member 21 is a smooth surface.

[0134] Furthermore, the clamp 100 also includes a base 30, a mounting frame 40 and a mounting member 50. There are at least two mounting frames 40, and the two mounting frames 40 are arranged on the base 30 at intervals; the mounting member 50 is arranged on the mounting frame 40, and a limiting component 20 is installed on the mounting member 50.

[0135] Furthermore, the number of the clamping assemblies 10 is at least two, and each mounting frame 40 is provided with a clamping assembly 10 . A limiting assembly 20 is provided below each clamping assembly 10 along the first direction.

[0136] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A fixture for fixing an electrode assembly, characterized in that: The fixture comprises: a clamping assembly, the clamping assembly comprising a clamping portion, the clamping portion being used to clamp the electrode assembly and having a rotating state and a stationary state, the clamping portion being switchable between the rotating state and the stationary state; and A limit assembly, the limit assembly comprising a retractable limit member, the limit member having a retracted state and an extended state, and being switchable between the retracted state and the extended state; Wherein, the limit member is configured such that when the clamping portion is in the rotating state, the limit member is in the contracted state and is located outside the clamping portion; and the limit member is also configured such that when the clamping portion is in the stationary state, the limit member is in the extended state, and at least a portion of the limit member is inserted into the accommodating space enclosed by the clamping portion to limit the position of the electrode assembly.

2. The clamp according to claim 1, characterized in that The limiting assembly further includes a driving member, and the driving member is used to drive the limiting member to move along a first direction, and the first direction is arranged to intersect with the axial direction of the clamping assembly.

3. The clamp according to claim 2, characterized in that The limiting component also includes a mounting member, which is connected to the driving member and is used to install the limiting member.

4. The clamp according to claim 3, characterized in that The mounting member includes a first mounting plate and a second mounting plate sequentially connected along the first direction, wherein the first mounting plate is connected to the driving member, and the second mounting plate is used to mount the limiting member.

5. The clamp according to claim 4, characterized in that The second mounting plate is provided with a mounting groove, and the limiting member includes a first limiting plate and a second limiting plate connected to each other, the first limiting plate and the second limiting plate are arranged at an angle, wherein the first limiting plate is arranged in the mounting groove, and the second limiting plate extends in the direction of the clamping portion.

6. The clamp according to claim 5, characterized in that The second mounting plate is provided with a first mounting hole, the first mounting hole is located at the bottom of the mounting groove, wherein the number of the first mounting holes is at least two, and the at least two first mounting holes are spaced apart along the axial direction of the clamping portion; The first limiting plate is provided with a connecting hole, and the connecting hole is arranged opposite to the first mounting hole.

7. The clamp according to claim 6, characterized in that The connecting hole is a strip-shaped hole, and the extending direction of the strip-shaped hole is the same as the axial direction of the clamping portion.

8. The clamp according to any one of claims 1 to 7, characterized in that At least part of the surface of the limiting member is a smooth surface.

9. The clamp according to any one of claims 1 to 7, characterized in that The fixture also includes: Base; A mounting frame, wherein the number of the mounting frames is at least two, and the two mounting frames are spaced apart and arranged on the base; and The mounting part is arranged on the mounting frame, and the limiting component is installed on the mounting part.

10. The clamp according to claim 9, characterized in that The number of the clamping assemblies is at least two, and each of the mounting frames is provided with the clamping assemblies, and each of the clamping assemblies is provided with the limiting assembly below along the first direction.

11. A welding device for welding an electrode assembly, characterized in that: The welding device comprises: The clamp as claimed in any one of claims 1 to 10; and A welder is used to weld the electrode assembly clamped by the clamping assembly of the clamp.

12. A battery production device, characterized in that: Comprising the welding device as claimed in claim 11.

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