Clamp

Abstract

The utility model discloses a clamp used for clamping a battery end cover, the clamp comprises a base and a first clamping assembly, the first clamping assembly comprises two clamping parts which are oppositely arranged, the two clamping parts can be arranged on the base in a mode of being close to or away from each other, and the two clamping parts are used for clamping the two ends of the battery end cover in the length direction. The clamp is applied to an end cover laser code carving station of a power battery, the end cover is clamped in the length direction of the end cover through the two sets of clamping parts, the clamping parts move close to or away from each other, the clamp is suitable for production of products of different sizes, calibration is convenient, and compatibility is good.

Description

Technical Field

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

[0002] In the battery manufacturing process, it is necessary to use laser to engrave product logos on the surface of the end caps in order to identify product information and manage the production chain. However, in the related art, the fixture used for the end cap laser engraving process has poor compatibility with end caps of different sizes. Utility Model Content

[0003] In view of the above problems, the present application provides a clamp for clamping a battery end cover, which is compatible with battery end covers of a larger size range.

[0004] The present application provides a clamp for clamping a battery end cover, the clamp includes a base and a first clamping assembly, wherein the first clamping assembly includes two clamping parts arranged opposite to each other, the two clamping parts can be arranged on the base close to or far away from each other, and the two clamping parts are used to clamp the two ends of the battery end cover in the length direction.

[0005] The clamp of the embodiment of the present application is applied to the laser coding station of the end cover of the power battery. The end cover is clamped in the length direction of the end cover by two sets of clamping components. The clamping components move closer to or away from each other to adapt to the production of products of different sizes, and the calibration is convenient and the compatibility is good.

[0006] In some embodiments, the first clamping assembly includes two adjustment components arranged in parallel along the direction in which the two clamping components approach or move away from each other, and the adjustment components are formed with a plurality of adjustment holes, and the plurality of adjustment holes are arranged along the direction in which the two clamping components are arranged, and the adjustment holes are used to adjust the distance between the two clamping components.

[0007] In this way, the distance between the two clamping parts is adjusted through the adjustment holes on the adjustment part, so that the first clamping assembly is compatible with different lengths of battery end covers, and the adjustment process does not require replacement of parts, which is convenient to operate. In addition, multiple adjustment holes are arranged along the direction in which the two clamping parts are arranged, ensuring the same direction of the distance adjustment between the clamping parts.

[0008] In some embodiments, the adjusting component is provided with a positioning structure, and the positioning structure is used to cooperate with the positioning piece of the battery end cover to define the positioning reference of the first clamping assembly, and the two clamping components are symmetrically arranged relative to the positioning reference.

[0009] In this way, the first clamping assembly is adjusted to match battery end covers of different lengths through the positioning structure and the positioning member, and the symmetry of the battery end cover is used to perform centering and symmetric correction. The calibration is convenient and quick, thereby improving the production efficiency of the battery end cover.

[0010] In some embodiments, the clamp includes a first driving assembly connected to the adjusting component, and the first driving assembly is used to drive the adjusting component to move relative to the base.

[0011] In this way, the first driving member can drive the adjusting component to move through the cylinder, so as to facilitate the control of the moving stroke of the adjusting component and the clamping component.

[0012] In some embodiments, the first clamping assembly also includes a guide assembly, which includes a slider and a slide rail. The slider is slidably disposed on the slide rail, the slide rail is fixed on the base, the slider and the slide rail extend along the arrangement direction of the two clamping components, and the slider is fixedly connected to the adjustment component.

[0013] In this way, the moving path of the adjusting component is limited by the slider and the slide rail, so that the adjusting component is not easily deformed or bent, thereby improving the reliability and stability of the first clamping assembly during long-term use.

[0014] In some embodiments, the first clamping assembly further comprises a limit block disposed on the adjusting component, the limit block being located on a side of the clamping component away from the other clamping component, the limit block abutting against the clamping component and limiting the position of the clamping component on the adjusting component.

[0015] In this way, it is ensured that the clamping components will not be offset from the positioning reference due to mechanical failure caused by high-frequency movement, so that the clamping force on both sides remains stable.

[0016] In some embodiments, the clamping component includes a first reference block and a contact piece mounted on the first reference block, the contact piece is arranged on a surface of one side opposite to the two first reference blocks, the outer peripheral surface of the contact piece protrudes from the surface of the first reference block where the contact piece is located, and the contact piece contacts with both ends of the battery end cover in the length direction when the clamping component clamps the battery end cover.

[0017] In this way, the outer peripheral surface of the contact piece protrudes from the surface of the first reference block, so that the clamping component and the battery end cover can be in line contact or point contact, thereby reducing dirt or wear of the battery end cover and improving the production quality of the battery end cover.

[0018] In some embodiments, the clamp includes a cushion assembly movably connected to the base, the cushion assembly is arranged between the two clamping parts, the cushion assembly can move along the arrangement direction of the two clamping parts, and the cushion assembly is used to support one side end of the battery end cover in the width direction.

[0019] In this way, by moving the cushion seat assembly along the arrangement direction of the clamping components, the stress points of the long side of the battery end cover are reasonably distributed and not easily deformed.

[0020] In some embodiments, the seat assembly includes a seat and a pad block disposed on the seat, the pad block is formed with an arc surface, the arc surface of the pad block protrudes from the outer surface of the seat, and the arc surface of the pad block contacts the battery end cover when the seat assembly supports the battery end cover.

[0021] In this way, the arc surface of the pad is in contact with the battery end cover, so that the long side of the battery end cover and the pad assembly can be in line contact or point contact while ensuring the strength of the parts, thereby reducing contamination or wear of the battery end cover.

[0022] In some embodiments, the clamp includes a second clamping assembly disposed on the base, and the second clamping assembly is used to clamp the two sides of the battery end cover in the thickness direction.

[0023] In this way, the second clamping assembly is used to clamp and correct the battery end cover in the thickness direction, thereby ensuring that the defocus amount of the laser code engraving is accurately controlled.

[0024] In some embodiments, the second clamping assembly includes a second driving assembly, a movable assembly and a positioning assembly. The second driving assembly is used to drive the movable assembly to approach or move away from the positioning assembly along the thickness direction of the battery end cover. The positioning assembly and the movable assembly jointly clamp both sides of the battery end cover in the thickness direction.

[0025] In this way, the driving component drives the movable component away from or away from the positioning component, so that the second clamping component can be compatible with battery end covers of different thicknesses.

[0026] In some embodiments, the number of the positioning components is two, and the two positioning components are arranged on the base in opposite directions of the clamping components and can move away from or approach each other.

[0027] In this way, by moving the two positioning components closer to or away from each other, the second clamping component can adapt to different lengths of the battery end cover, so that the clamp can be compatible with battery end covers of a wide range of sizes, and the clamping force is reasonably distributed, and the battery end cover is not easily deformed or scratched.

[0028] In some embodiments, the movable component includes an adjustment plate and two pushing block mechanisms movably arranged relative to the adjustment plate, the adjustment plate is provided with two mounting holes, the long sides of the mounting holes extend in directions opposite to the positioning component, the two pushing block mechanisms each pass through a mounting hole and can move in the mounting hole along the long side direction of the mounting hole.

[0029] In this way, the push block mechanism is moved along the long side direction of the mounting hole to adapt to different lengths of the battery end cover, thereby improving the compatibility of the clamp and ensuring the parallelism of the movement of the movable component, which is conducive to maintaining consistent clamping force, thereby accurately controlling the position of the battery end cover.

[0030] In some embodiments, the pushing block mechanism includes a pushing block, an elastic member and a guide member. When the movable assembly approaches the positioning assembly, the pushing block clamps both sides of the battery end cover in the thickness direction with the positioning assembly. The elastic member is used to apply elastic force to the pushing block so that the pushing block presses the battery end cover.

[0031] In this way, the elastic force applied to the push block along the thickness direction of the battery end cover by the elastic member can effectively realize the self-adaptation of the pressing force, thereby preventing the battery end cover from being deformed.

[0032] In some embodiments, the second driving assembly is movably disposed on a bracket, the bracket is fixedly connected to the base, and the second driving assembly can drive the movable assembly to move up and down relative to the bracket.

[0033] In this way, by moving the second drive component up and down relative to the bracket, the height at which the second drive component is installed on the bracket is adjusted, so that the position of the push block in the movable component can adapt to the difference in battery end covers, thereby making the clamp compatible with battery end covers of a wide range of width sizes and clamping the battery end covers at an appropriate height position to prevent the battery end covers from being easily deformed.

[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 drawings to represent the same components. In the drawings:

[0036] Figure 1 It is a schematic diagram of the structure of an electric device provided in an embodiment of the present application;

[0037] Figure 2 is a schematic diagram of the structure of a battery provided in an embodiment of the present application;

[0038] Figure 3 is a schematic diagram of the exploded structure of a battery cell provided in an embodiment of the present application;

[0039] Figure 4 It is a schematic diagram of the structure of the clamp provided in the embodiment of the present application;

[0040] Figure 5 is a schematic diagram of the structure of the clamp provided in an embodiment of the present application from a top view;

[0041] Figure 6It is a schematic structural diagram of the clamp provided in the embodiment of the present application in a front view;

[0042] Figure 7 is a schematic structural diagram of a clamp provided in another embodiment of the present application;

[0043] Figure 8 is a schematic diagram of the exploded structure of the clamping component provided in the embodiment of the present application;

[0044] Fig. 9 is a structural schematic diagram of a cushion assembly provided in an embodiment of the present application;

[0045] Fig.10 It is a schematic diagram of the decomposed structure of the active components provided in the implementation mode of the present application.

[0046] Description of main component symbols:

[0047] Vehicle 1000, battery cell 100, housing 10, battery cell assembly 20, main body 21, tab 22, battery end cover 30, dummy part 310, positioning part 31, positioning pin 311, battery 200, motor 300, controller 400, housing 210, first part 211, second part 212;

[0048] The fixture 2000, the base 40, the bottom plate 41, the positioning hole 411, the second adjustment hole 412, the third adjustment hole 413, the pad 42, the first clamping assembly 50, the clamping component 51, the first reference block 511, the mounting portion 5111, the reference portion 5112, the contact member 512, the adjustment component 52, the adjustment hole 521, the positioning structure 522, the guide assembly 53, the slider 531, the slide rail 532, the limit block 54, the first drive assembly 60, the first air Cylinder 61, cushion assembly 70, cushion 71, cushion block 72, second clamping assembly 80, second driving assembly 81, second cylinder 811, movable assembly 82, adjustment plate 821, mounting hole 8211, push block mechanism 822, push block 8221, elastic member 8222, guide member 8223, flange linear bearing 8224, positioning assembly 83, second reference block 831, front reference surface 8311, bracket 90, assembly groove 91, second bracket 92. DETAILED DESCRIPTION

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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).

[0055] 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.

[0056] 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.

[0057] At present, judging from the development of the market situation, the application of batteries is becoming more and more extensive. Batteries can not only be used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as mobile communication equipment, smart wearables, aerospace and other fields. With the diversification of usage scenarios and the growth of market demand, the requirements for battery quality and production efficiency are also increasing.

[0058] A battery can be composed of one or more battery cells. A battery cell generally includes a housing, an electrode assembly and a pole. The electrode assembly includes a main body that generates electrical energy and a pole ear that is electrically connected to the main body. The pole is usually set on the housing and connected to the main body through the pole ear to conduct electrical energy. Battery cells can be used in electrical devices that use batteries as power sources or various energy storage systems that use batteries as energy storage elements.

[0059] The electrical device may be, but is not limited to, a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. Among them, the spacecraft may be an airplane, a rocket, a space shuttle, a spacecraft, and the like, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0060] The battery can be a power battery used to provide driving power for new energy vehicles, electric bicycles, electric trains and other means of transportation. The battery can also be an energy storage battery used as a storage battery for renewable energy sources such as solar power generation, wind power generation, and hydropower generation.

[0061] In the process of power battery production and manufacturing, in order to facilitate management, it is necessary to engrave product information on the battery for identification, statistics and traceability of product information. The top surface of the battery end cap is usually located on the top of the battery, which is convenient for viewing and has a relatively flat appearance. The laser engraving process can be used to engrave codes, barcodes, QR codes, etc. on the battery end cap to record product information. Laser engraving is a process that projects a high-energy laser beam onto the surface of the processed product and uses the thermal effect generated by the laser to produce text or patterns on the surface of the product. During the laser engraving process, the battery end cap needs to be clamped and fixed by a fixture to accurately control the defocus amount of the laser beam to ensure the processing quality. The defocus amount is the distance between the surface of the battery end cap and the laser focus. Accurately controlling the defocus amount can make the power density distribution of the laser beam projected onto the surface of the battery end cap relatively uniform, forming clear and uniform graphics. Therefore, whether the clamping force of the clamp on the battery end cap is stable and whether the clamping position can be accurately controlled has an important impact on the product quality of the laser engraving process.

[0062] Power batteries are widely used and rich in variety, with large differences in product specifications. The size range of battery end covers is relatively wide, among which the length range of square battery end covers can reach 145mm to 310mm, the width range can reach 25mm to 95mm, and the thickness range can reach 8mm to 15mm. In related technologies, the fixture used to clamp the battery end cover needs to replace the bottom plate, baffle and other parts when replacing products of different specifications, resulting in a long changeover time and affecting production efficiency.

[0063] In order to improve production efficiency, right-angle references and movable parts can be used on the base plate, so that when producing battery end caps of different specifications, there is no need to replace the base plate, shortening the fixture change time. However, the above solution has limited compatibility with the size of the battery end cap. When the size of the battery end cap changes greatly, manual operation is required to readjust the fixed right-angle reference, which is difficult to calibrate and easily causes the quality rate of laser-engraved products to decrease.

[0064] In the context of increasingly lean requirements for battery quality and production efficiency, the clamp of the embodiment of the present application is provided with a first clamping assembly on the base, and two opposite clamping parts in the first clamping assembly clamp the two ends of the length direction of the battery end cover, and the two clamping parts are moved closer or farther away from each other to adapt to the length dimension change of the battery end cover, so that the clamp has high dimensional compatibility, and can be corrected by a centered symmetrical reference, and is easy to operate. Then, a second clamping assembly is provided on the base, and the positioning assembly in the second clamping assembly and the movable assembly that can move up and down, left and right, and forward and backward relative to the base clamp the two sides of the battery end cover in the thickness direction, so that the clamp is well compatible with the dimensional changes of the width and thickness of the battery end cover, and the adjustment is convenient and quick, thereby improving the efficiency of changing models.

[0065] Please refer to Figure 1For the convenience of explanation, the electric power consumption device of one embodiment of the present application is described as a vehicle 1000. Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 200 is provided inside the vehicle 1000, and the battery 200 may be provided at the bottom, head or tail of the vehicle 1000. The battery 200 may be used to power the vehicle 1000, for example, the battery 200 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 400 and a motor 300, and the controller 400 is used to control the battery 200 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0066] In some embodiments of the present application, the battery 200 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0067] Please refer to Figure 2 , Figure 2 An exploded view of a battery 200 provided for some embodiments of the present application. The battery 200 includes a box 210 and a battery cell 100, and the battery cell 100 is contained in the box 210. Among them, the box 210 is used to provide a storage space for the battery cell 100, and the box 210 can adopt a variety of structures. In some embodiments, the box 210 may include a first part 211 and a second part 212, and the first part 211 and the second part 212 cover each other, and the first part 211 and the second part 212 jointly define a storage space for accommodating the battery cell 100. The second part 212 may be a hollow structure with one end open, and the first part 211 may be a plate-like structure, and the first part 211 covers the open side of the second part 212, so that the first part 211 and the second part 212 jointly define a storage space; the first part 211 and the second part 212 may also be hollow structures with one side open, and the open side of the first part 211 covers the open side of the second part 212. Of course, the box body 210 formed by the first part 211 and the second part 212 can be in various shapes, such as a cylinder, a cuboid, etc.

[0068] In the battery 200, there may be multiple battery cells 100, and the multiple battery cells 100 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 100 are both connected in series and in parallel. The multiple battery cells 100 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 100 is accommodated in the box 210; of course, the battery 200 may also be a battery module formed by connecting multiple battery cells 100 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 210. The battery 200 may also include other structures, for example, the battery 200 may also include a busbar component for realizing electrical connection between the multiple battery cells 100.

[0069] Each battery cell 100 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 100 may be cylindrical, flat, rectangular, or in other shapes.

[0070] See also Figure 3 , Figure 3 The schematic diagram of the decomposition structure of a battery cell provided in some embodiments of the present application. The battery cell 100 refers to the smallest unit that constitutes the battery 200. Figure 3 The battery cell 100 includes a housing 10, a battery cell assembly 20, a battery end cover 30 and other functional components.

[0071] The battery end cap 30 refers to a component that covers the opening of the shell 10 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the battery end cap 30 can be adapted to the shape of the shell 10 to match the shell 10. Optionally, the battery end cap 30 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the battery end cap 30 is not easy to deform when it is squeezed and collided, so that the battery cell 20 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals can be provided on the battery end cap 30. The electrode terminal can be used to electrically connect to the battery cell assembly 20 for outputting or inputting electrical energy of the battery cell 20. In some embodiments, the battery end cap 30 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The material of the battery end cap 30 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this. In some embodiments, an insulating member may be provided inside the battery end cover 30, and the insulating member may be used to isolate the electrical connection components in the housing 10 from the battery end cover 30 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, etc.

[0072] The housing 10 is a component used to cooperate with the battery end cover 30 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the battery cell assembly 20, electrolyte and other components. The housing 10 and the battery end cover 30 can be independent components, and an opening can be set on the housing 10, and the internal environment of the battery cell 20 is formed by covering the opening with the battery end cover 30 at the opening. Without limitation, the battery end cover 30 and the housing 10 can also be integrated. Specifically, the battery end cover 30 and the housing 10 can form a common connection surface before other components are put into the shell, and when the interior of the housing 10 needs to be encapsulated, the battery end cover 30 is covered with the housing 10. The housing 10 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the housing 10 can be determined according to the specific shape and size of the battery cell assembly 20. The material of the housing 10 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0073] The battery cell assembly 20 is a component in the battery cell 100 where electrochemical reactions occur. One or more battery cell assemblies 20 may be included in the housing 10. The battery cell assembly 20 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body 21 of the battery cell assembly 20, and the parts of the positive and negative electrode sheets without active materials each constitute a tab 22. The positive tab and the negative tab may be located together at one end of the main body 21 or respectively at both ends of the main body 21. During the charge and discharge process of the battery, the positive active material and the negative active material react with the electrolyte, and the tab 22 connects the electrode terminals to form a current loop.

[0074] According to some embodiments of this application, please refer to Figure 4 , and please refer to Figure 4-Figure 7 , Figure 4 2 is a schematic diagram of a three-dimensional structure of a clamp 2000 of an embodiment of the present invention. The present application provides a clamp 2000 for clamping a battery end cover 30. The clamp 2000 includes a base 40 and a first clamping assembly 50, wherein the first clamping assembly 50 includes two clamping parts 51 arranged opposite to each other, and the two clamping parts 51 can be arranged on the base 40 close to or away from each other, and the two clamping parts 51 are used to clamp the two ends of the battery end cover 30 in the length direction.

[0075] As shown in the figure, the X direction in the figure is the length direction of the battery end when the battery end is clamped by the clamp 2000, the Y direction is the thickness direction of the battery end when the battery end is clamped by the clamp 2000, and the Z direction is the width direction of the battery end when the battery end is clamped by the clamp 2000. The clamp 2000 of the embodiment of the present application can be used for a square battery end cover 30, and the X direction, the Y direction and the Z direction are perpendicular to each other.

[0076] Specifically, the base 40 includes a bottom plate 41 and a pad 42. The bottom plate 41 extends along the XY plane to form a horizontal mounting surface. The pad 42 can be located below the bottom plate 41 to provide support for the bottom plate 41. The first clamping assembly 50 can be mounted on the bottom plate 41. The two clamping parts 51 are arranged relative to each other along the X direction and can move along the X direction. The two clamping parts 51 move away from each other along the X direction, and the distance between the two clamping parts 51 is expanded. The battery end cover 30 is dropped between the two clamping parts 51, and the two ends of the battery end cover 30 in the length direction are respectively facing the two clamping parts 51. The two clamping parts 51 approach each other along the X direction, and the distance between the two clamping parts 51 is shortened, and the battery end cover 30 is clamped in the X direction. The clamping force of the clamping part 51 on the battery end cover 30 can be over-clamped within a certain range. For example, the clamping force on the battery end cover 30 in the length direction can be over-clamped by 0.5 mm.

[0077] The two clamping parts 51 can move toward or away from each other along the X direction when the battery end covers 30 of different lengths are replaced, and the distance between the two clamping parts 51 can be adjusted within a range of at least 145 mm to 310 mm.

[0078] The clamp 2000 of the embodiment of the present application is applied to the laser coding station of the end cover of the power battery. The end cover is clamped in the length direction of the end cover by two sets of clamping components 51. The clamping components 51 move closer to or away from each other to adapt to the production of products of different sizes, and the calibration is convenient and the compatibility is good.

[0079] See also Figure 4 and Figure 5 In some embodiments, the first clamping assembly 50 includes two adjusting components 52 arranged in parallel along the direction in which the two clamping components 51 approach or move away from each other, and the adjusting components 52 are formed with a plurality of adjusting holes 521, and the plurality of adjusting holes 521 are arranged along the direction in which the two clamping components 51 are arranged, and the adjusting holes 521 are used to adjust the distance between the two clamping components 51.

[0080] Specifically, the adjusting component 52 can be in the shape of a plate or a strip, extending in the X direction. Two adjusting components 52 are arranged side by side on the bottom plate 41 along the X direction, and the adjusting holes 521 are arranged on the adjusting component 52 along the X direction. The adjusting holes 521 can be arranged at a specific spacing on the adjusting component 52, for example, the adjusting holes 521 can be closely and evenly arranged on the adjusting component 52 to achieve stepless adjustment of the clamping component 51 in the X direction. The clamping component 51 is detachably connected to the adjusting component 52, and the clamping component 51 can be installed and fixed on the adjusting component 52 through the adjusting holes 521, and each clamping component 51 is respectively arranged on one adjusting component 52. The clamping component 51 and the adjusting component 52 can be connected by at least one of bolt connection, pin connection, magnetic connection, and press fit connection. Exemplarily, the adjusting hole 521 can be a screw hole, and the clamping component 51 is installed on the adjusting component 52 by bolts. The distance between the two clamping components 51 is adjusted by adjusting the position of the adjusting holes 521 of the mounting bolts on the two adjusting components 52.

[0081] In this way, the distance between the two clamping parts 51 is adjusted through the adjustment hole 521 on the adjustment part 52, so that the first clamping assembly 50 is compatible with different lengths of the battery end caps 30, and the adjustment process does not require replacement of parts, which is convenient to operate. In addition, multiple adjustment holes 521 are set along the direction in which the two clamping parts 51 are arranged, ensuring the same direction of the distance adjustment between the clamping parts 51.

[0082] See also Figure 4-Figure 6 In some embodiments, the adjusting component 52 is provided with a positioning structure 522, and the positioning structure 522 is used to cooperate with the positioning member 31 of the battery end cover 30 to define the positioning reference of the first clamping assembly 50, and the two clamping components 51 are symmetrically arranged relative to the positioning reference.

[0083] Specifically, when adjusting the clamping member 51, a simulation member 310 of the battery end cover 30 can be made. The simulation member 310 includes the battery end cover 30 and the positioning member 31, which is used to simulate the blanking and laser coding processing of battery end covers 30 of different specifications in the actual production process, so as to adjust the fixture 2000 to match the size change of the battery end cover 30. Figure 6 As shown, the positioning member 31 may be provided with a positioning pin 311, and the positioning pin 311 is located in the middle of the long side of the battery end cover 30. Due to the product characteristics of the battery end cover 30, the battery end cover 30 is symmetrical about the positioning pin 311 in the X direction. A positioning hole 411 may be provided on the base 40, and the positioning member 31 simulates the blanking of the battery end cover 30, and the positioning pin 311 is inserted into the positioning hole 411.

[0084] The positioning structure 522 can be arranged on the side of the adjusting member 52 opposite to the two adjusting members 52, and the positioning hole 411 can be arranged on the bottom plate 41 and located on the symmetry line of the two identical adjusting members 52. The positioning structure 522 can be a plug hole, and the positioning member 31 can be provided with a second positioning pin 311, and the second positioning pin 311 can be two groups, and the two groups of second positioning pins 311 can be symmetrically distributed about the positioning pin 311. When the positioning pin 311 is inserted into the positioning hole 411, the two groups of positioning pins 311 are respectively inserted into the adjusting members 52 on both sides of the positioning hole 411, thereby limiting the position of the two adjusting members 52 to match the length dimension of the battery end cover 30 simulated by the simulation member 310. Subsequently, the clamping parts 51 on both sides can be close to the battery end cover 30 of the simulation part 310, so that the distance between the two clamping parts 51 is close to the length dimension of the battery end cover 30, and the two clamping parts 51 are symmetrical relative to the positioning pin 311 and the positioning hole 411. The clamping parts 51 can be locked on the adjustment holes 521 at the corresponding positions by bolts and fixed relative to the adjustment parts 52.

[0085] In this way, the first clamping assembly 50 is adjusted to match the battery end covers 30 of different lengths through the positioning structure 522 and the positioning member 31, and the symmetry of the battery end covers 30 is used to perform centering and symmetrical correction. The calibration is convenient and quick, thereby improving the production efficiency of the battery end covers 30.

[0086] See also Figure 4 and Figure 6 In some embodiments, the clamp 2000 includes a first driving assembly 60 , which is connected to the adjusting component 52 , and is used to drive the adjusting component 52 to move relative to the base 40 .

[0087] Specifically, the first drive assembly 60 can be installed on the base 40, and the first drive assembly 60 can be driven by a drive unit such as a cylinder, a hydraulic cylinder, a motor, an electric linear actuator, etc. Exemplarily, as shown in the figure, the first drive assembly 60 includes a first cylinder 61, and the first cylinder 61 is connected to the adjustment component 52, and drives the adjustment interval to move along the X direction through the movement of the pneumatic piston. The first cylinder 61 can be a symmetrical cylinder, which is arranged on the center line between the two adjustment components 52. The symmetrical first cylinder 61 can control the left and right adjustment components 52 to move the same distance in opposite directions, keeping the positioning reference in the X direction always in the center position.

[0088] After the positioning reference of the first clamping assembly 50 is corrected by the simulation part 310, the adjusting part 52 can be symmetrically adjusted within a certain range in which the distance between the two clamping parts 51 is close to the length of the battery end cover 30. Before the battery end cover 30 is dropped, the first cylinder 61 drives the adjusting part 52 to move a certain distance in opposite directions, and the adjusting part 52 drives the clamping part 51 to move synchronously, and the two clamping parts 51 move away from each other, so that the battery end cover 30 can be placed between the two clamping parts 51 more easily. After the battery end cover 30 is dropped, the first cylinder 61 drives the adjusting part 52 to move a certain distance in opposite directions, and the adjusting part 52 drives the clamping part 51 to move synchronously, and the two clamping parts 51 move closer to each other to clamp the battery end cover 30.

[0089] In this way, the first driving member can drive the adjusting component 52 to move via the cylinder, so as to facilitate controlling the moving strokes of the adjusting component 52 and the clamping component 51 .

[0090] See also Figure 4 In some embodiments, the first clamping assembly 50 also includes a guide assembly 53, the guide assembly 53 includes a slider 531 and a slide rail 532, the slider 531 is slidably disposed on the slide rail 532, the slide rail 532 is fixed on the base 40, the slider 531 and the slide rail 532 extend along the arrangement direction of the two clamping components 51, and the slider 531 is fixedly connected to the adjustment component 52.

[0091] Specifically, the guide assembly 53 can be arranged below the adjusting component 52 and arranged in the same direction as the adjusting component 52. The slide rail 532 can be embedded in the base plate 41, fixed to a side edge of the base plate 41 along the Y direction, and extend along the X direction. The slider 531 can be slidably mounted on the slide rail 532 and slide along the direction in which the slide rail 532 extends. The guide assembly 53 can be provided with two groups, and the two groups of guide assemblies 53 can be arranged in parallel along the X direction, and the sliders 531 in each group of guides are respectively connected to one adjusting component 52. Driven by the first driving assembly 60, the slider 531 and the adjusting component 52 move in the direction in which the slide rail 532 extends, and the clamping component 51 installed on the adjusting component 52 moves synchronously with the adjusting component 52, thereby maintaining the same direction of the clamping force of the clamping component 51 on the battery end cover 30.

[0092] The slide rail 532 may be a linear ball slide rail 532 , and the slider 531 and the adjusting component 52 are stacked in the Z direction to provide support for the adjusting component 52 .

[0093] In this way, the moving path of the adjusting component 52 is limited by the slider 531 and the slide rail 532, so that the adjusting component 52 is not easily deformed or bent, thereby improving the reliability and stability of the first clamping assembly 50 in long-term use.

[0094] Please continue reading Figure 4In some embodiments, the first clamping assembly 50 further includes a limit block 54 disposed on the adjusting component 52, the limit block 54 is located on the side of the clamping component 51 away from the other clamping component 51, the limit block 54 abuts against the clamping component 51 and limits the position of the clamping component 51 on the adjusting component 52.

[0095] Specifically, the clamping parts 51 on both sides are adjusted to the edge of the length direction of the battery end cover 30 when the battery end cover 30 is clamped, that is, the short side of the battery end cover 30 is fixedly installed, and the limit block 54 is synchronously moved to the side of the clamping part 51 away from the battery end cover 30 to achieve double fastening. During continuous production, the clamping part 51 and the adjustment part 52 need to reciprocate at a high frequency along the X direction to place or clamp the battery end cover 30, so that mechanical failure is easy to occur between the clamping part 51 and the adjustment part 52. Double fastening is performed on the outside of the clamping part by the limit block 54 to avoid the deviation of the clamping part 51.

[0096] The clamping force of the two clamping components 51 on the battery end cover 30 can be kept stable by the fastening effect of the limit block 54. For example, the clamping force on both sides of the battery end cover 30 can be kept at an over-clamping of 0.5 mm.

[0097] In this way, it is ensured that the clamping component 51 will not be offset from the positioning reference due to mechanical failure caused by high-frequency movement, so that the clamping forces on both sides remain stable.

[0098] See also Figure 6 and Figure 8 In some embodiments, the clamping component 51 includes a first reference block 511 and a contact member 512 mounted on the first reference block 511. The contact member 512 is arranged on the side surface opposite to the two first reference blocks 511. The outer peripheral surface of the contact member 512 protrudes from the surface of the first reference block 511 where the contact member 512 is located. When the clamping component 51 clamps the battery end cover 30, the contact member 512 contacts both ends of the battery end cover 30 in the length direction.

[0099] Specifically, the first reference block 511 may include a mounting portion 5111 and a reference portion 5112, wherein the mounting portion 5111 is located at the bottom of the first reference block 511 and is formed with a through hole, and the reference portion 5112 is located above the mounting portion 5111 and is vertically arranged along the Z direction. The bottom surface of the mounting portion 5111 contacts the adjustment component 52, and the mounting portion 5111 is locked to the adjustment component 52 by bolts when the through hole corresponds to the adjustment hole 521. The reference portion 5112 may be in a square shape, and the reference portion 5112 may be formed with vertical surfaces, and the contact member 512 may be arranged on two vertical surfaces opposite to each other along the X direction.

[0100] The contact member 512 may be columnar, and the outer peripheral surface of the contact member 512 surrounds the central axis of the contact member 512. The central axis of the contact member 512 may be consistent with the Y direction, and the contact member 512 forms a certain angle with the end of the battery end cover 30 in the length direction, that is, the short side of the battery end cover 30. For a square battery end cover 30, the contact member 512 is perpendicular to the short side of the battery end cover 30. The contact member 512 is installed on two opposite vertical surfaces of the reference portion 5112, and the outer peripheral surface of the contact member 512 protrudes from the vertical surface. When the clamping component 51 clamps the battery end cover 30, the short side of the battery end cover 30 first contacts the outer peripheral surface of the contact member 512, and the contact member 512 abuts against the battery end cover 30, so that the outer peripheral surface of the contact member 512 is in line contact or point contact with the short side of the battery end cover 30 when the clamping component 51 clamps the battery end cover 30.

[0101] The outer peripheral surface of the contact member 512 can be a smooth arc surface, which effectively prevents the battery end cover 30 from being scratched when the clamping component 51 is clamped. The contact member 512 can be made of non-metallic materials such as ceramics, wear-resistant plastics, quartz, etc. For example, the contact member 512 can be made of a ceramic pin. The contact member 512 can be embedded in the second reference block 831, so that the overall strength of the clamping component 51 is higher.

[0102] The height of the first reference block 511 in the Z direction should be greater than the maximum dimension of the width of the battery end cover 30, and the height range of the reference portion 5112 in the Z direction can be greater than 95 mm. The number of the contact members 512 can be multiple, and the multiple contact members 512 can be arranged in parallel at a certain distance along the Z direction, so that the force points on the short side of the battery end cover 30 are evenly distributed and not easily deformed.

[0103] In this way, by the outer peripheral surface of the contact member 512 protruding from the surface of the first reference block 511, the clamping component 51 and the battery end cover 30 are in line contact or point contact, which reduces dirt or wear of the battery end cover 30 and improves the production quality of the battery end cover 30.

[0104] See also Figure 5 and Figure 6 In some embodiments, the clamp 2000 includes a cushion assembly 70 movably connected to the base 40, the cushion assembly 70 is disposed between the two clamping components 51, the cushion assembly 70 can move along the arrangement direction of the two clamping components 51, and the cushion assembly 70 is used to support one side end of the battery end cover 30 in the width direction.

[0105] Specifically, the battery end cover 30 is dropped downwardly between the opened clamping component 51 and the second clamping component 80 roughly along the Z direction, and one end of the battery end cover 30 in the width direction, that is, one long side of the battery end cover 30, faces the adjustment component 52. The cushion assembly 70 can be arranged above the adjustment component 52 and span the adjustment component 52 along the Y direction. The portion of the cushion assembly 70 spanning above the adjustment component 52 contacts the long side of the battery end cover 30 and supports the battery end cover 30 upward.

[0106] The number of the cushion assembly 70 can be two, and the two cushion assemblies 70 are respectively disposed above the two adjustment components 52 and can be symmetrically arranged relative to the center line between the two adjustment components 52. The cushion assembly 70 can be connected to the base plate 41 by at least one of bolt connection, latch connection, magnetic connection, and press fit connection. For example, please refer to Figure 5 , a plurality of second adjustment holes 412 arranged along the X direction are provided on the bottom plate 41, and the cushion assembly 70 is installed on the bottom plate 41 by bolt connection. When replacing the battery end caps 30 of different lengths, the cushion assembly 70 can be fixed at different second adjustment holes 412 according to the length of the battery end caps 30 to adjust the distance between the two cushion assemblies 70. The second adjustment holes 412 can be closely and evenly arranged to achieve infinite adjustment of the position of the cushion assembly 70 in the X direction.

[0107] In this way, by moving the cushion assembly 70 along the arrangement direction of the clamping components 51, the force points on the long side of the battery end cover 30 are reasonably distributed and not easily deformed.

[0108] See also Figure 5 and Fig. 9 In some embodiments, the cushion assembly 70 includes a cushion 72 and a cushion block 72 disposed on the cushion 72, the cushion block 72 is formed with an arc surface, the arc surface of the cushion block 72 protrudes from the outer surface of the cushion 72, and the arc surface of the cushion block 72 contacts the battery end cover 30 when the cushion assembly 70 supports the battery end cover 30.

[0109] Specifically, the pad 72 is arranged at the portion of the cushion 72 that crosses the adjustment component 52, and the arc surface of the pad 72 is higher than the surface of the cushion 72 that crosses the adjustment component 52 and faces away from the adjustment component 52. The battery end cover 30 is dropped above the cushion assembly 70, and the arc surface of the pad 72 protrudes and first contacts the battery end cover 30. The pad 72 can be columnar, and the pad 72 can form a certain angle with the long side of the battery end cover 30, thereby reducing the contact area and achieving point contact or line contact. The arc surface of the pad 72 can be relatively smooth to prevent scratching the long side of the battery end cover 30.

[0110] The two cushion assemblies 70 can be completely identical and arranged side by side on the same horizontal plane of the base plate 41, so that the highest points of the arc surfaces of the two cushion blocks 72 in the Z direction remain on the same reference plane, so that during the laser engraving process, each battery end cover 30 uses the same reference in the Z direction, which is beneficial to control the defocus amount and improve the product quality rate of laser engraving.

[0111] The pad 72 can be made of non-metallic materials such as ceramics, wear-resistant plastics, quartz, etc. For example, the pad 72 can be made of ceramic pins. The pad 72 has high wear resistance, and the battery end cover 30 contacts the non-metallic parts, reducing the probability of adverse conditions such as scratches on the surface of the battery end cover 30. The pad 72 can be embedded in the cushion seat 72 to improve the strength and integrity of the cushion seat assembly 70.

[0112] In this way, the arc surface of the cushion block 72 contacts the battery end cover 30 , thereby ensuring the strength of the parts and achieving line contact or point contact between the long side of the battery end cover 30 and the cushion assembly 70 , thereby reducing contamination or wear of the battery end cover 30 .

[0113] Please combine Figure 7 and Fig. 9 In some embodiments, the cushion seat 72 can also form a vertical surface arranged along the Z direction. When the battery end cover 30 is blanked, the vertical surface of the cushion seat 72 is located behind the battery end cover 30, which provides support force for the battery end cover 30 along the Y direction to a certain extent.

[0114] See also Figure 5 and Figure 7 In some embodiments, the clamp 2000 includes a second clamping assembly 80 disposed on the base 40 , and the second clamping assembly 80 is used to clamp on both sides of the battery end cover 30 in the thickness direction.

[0115] Specifically, to facilitate identification of the engraved code, the laser beam can be projected along the Y direction to the front of the battery end cover 30. The front of the battery end cover 30 is the side surface of the battery end cover 30 that is away from the battery cell assembly when the battery end cover 30 is installed on the battery cell. The thickness of the battery end cover 30 is usually much smaller than the length. The thickness of the square battery end cover 30 ranges from 8mm to 15mm (including the end points). The clamping correction accuracy of the second clamping assembly 80 is higher than that of the first clamping assembly 50. The second clamping assembly 80 clamps the battery end cover 30 along the Y direction so that the front of the battery end cover 30 can be exposed to the laser beam.

[0116] In this way, the second clamping assembly 80 is used to clamp and correct the battery end cover 30 in the thickness direction, thereby ensuring that the defocus amount of the laser code engraving is accurately controlled.

[0117] See also Figure 5In some embodiments, the second clamping assembly 80 includes a second driving assembly 81, a movable assembly 82 and a positioning assembly 83. The second driving assembly 81 is used to drive the movable assembly 82 to approach or move away from the positioning assembly 83 along the thickness direction of the battery end cover 30. The positioning assembly 83 and the movable assembly 82 jointly clamp the two sides of the battery end cover 30 in the thickness direction.

[0118] Specifically, the second drive assembly 81 can be driven by a drive unit such as a cylinder, a hydraulic cylinder, a motor, an electric linear actuator, etc. Exemplarily, the second drive assembly 81 includes a second cylinder 811, and the second cylinder 811 can drive the movable assembly 82 to move along the thickness direction of the battery end cover 30, that is, the Y direction. The positioning assembly 83 is detachably connected to the base 40, can be fixed relative to the base 40 in the Y direction and the Z direction, and can move relative to the base 40 in the X direction.

[0119] When the battery end cover 30 is blanked, the second driving assembly 81 drives the movable assembly 82 away from the positioning assembly 83 along the Y direction, and the battery end cover 30 can be placed between the movable assembly 82 and the positioning assembly 83, and the two side surfaces of the battery end cover 30 in the thickness direction are respectively facing the movable assembly 82 and the positioning assembly 83. Then, the second driving assembly 81 drives the movable assembly 82 to approach the positioning assembly 83 along the Y direction, and the movable assembly 82 and the positioning assembly 83 clamp the battery end cover 30 along the Y direction.

[0120] When replacing a battery end cover 30 with a different thickness, the distance between the movable component 82 and the positioning component 83 when clamping the battery end cover 30 is adjusted by moving the movable component 82 closer to or farther away from the positioning component 83 to meet the thickness change of the battery end cover 30.

[0121] In this way, the driving assembly drives the movable assembly 82 away from or away from the positioning assembly 83, so that the second clamping assembly 80 can be compatible with battery end covers 30 of different thicknesses.

[0122] See also Figure 6 and Figure 7 In some embodiments, the positioning assembly 83 includes a second reference block 831, and the second reference block 831 is fixed relative to the base 40 in the Y direction. The second reference block 831 can be erected on the bottom plate 41, and the side surface of the second reference block 831 facing the movable assembly 82 is a front reference surface 8311, and the front reference surface 8311 can be parallel to the XZ plane.

[0123] The second reference block 831 may be arranged at the edge of the bottom plate 41 in the Y direction. The positioning assembly 83 and the movable assembly 82 clamp the battery end cover 30, and the laser beam may be projected from the side where the second reference block 831 is located to the surface of the battery end cover 30 in the Y direction. The side surface of the battery end cover 30 facing the second reference block 831 may be the front of the battery end cover 30. The front of the square battery end cover 30 may be a plane, and the battery end cover 30 is dropped between the second reference block 831 and the movable assembly 82. The movable assembly 82 moves close to the second reference block 831, pushing the front of the battery end cover 30 to be close to the front reference surface 8311, and correcting the position of the battery end cover 30 in the Y direction.

[0124] In this way, by correcting through the front reference surface 8311, the reference surface of the code engraving of each battery end cover 30 can be kept uniform, effectively improving the product quality rate of laser engraving.

[0125] like Figure 7 As shown, the second reference block 831 can be a thin block or a thin sheet, thereby reducing the contact area between the front reference surface 8311 and the battery end cover 30, reducing wear and stain deposition. The second reference block 831 can be made of non-metallic materials, for example, the second reference block 831 can be made of special polymer materials such as PEEK (polyetheretherketone), while ensuring that the positioning component 83 is strong enough to stably clamp the battery end cover 30 while reducing wear or pollution to the battery end cover 30.

[0126] See also Figure 5 In some embodiments, the number of the positioning components 83 is two, and the two positioning components 83 are relatively arranged on the base 40 along the opposite direction of the clamping component 51, and can move away from or approach each other.

[0127] Specifically, the two positioning components 83 are respectively arranged corresponding to the two adjustment components 52, and the two positioning components 83 can be symmetrically arranged about the straight line connected by the two positioning holes 411. The bottom plate 41 can be provided with third adjustment holes 413 arranged along the X direction, and the third adjustment holes 413 are used to adjust the position of the positioning components 83. For example, the positioning components 83 are locked on the third adjustment holes 413 at different positions by bolt connection to adapt to battery end covers 30 of different lengths. The third adjustment holes 413 can be closely and evenly arranged to achieve stepless adjustment of the position of the cushion assembly 70 in the X direction.

[0128] In this way, by moving the two positioning components 83 closer to or away from each other, the second clamping component 80 can adapt to the different length dimensions of the battery end cover 30, so that the clamp 2000 can be compatible with battery end covers 30 of a wide range of sizes, and the clamping force is reasonably distributed, and the battery end cover 30 is not easily deformed or scratched.

[0129] See also Figure 5 and Fig.10In some embodiments, the movable component 82 includes an adjustment plate 821 and two push blocks 8221 mechanisms 822 that are movably arranged relative to the adjustment plate 821, the adjustment plate 821 is provided with two mounting holes 8211, and the long sides of the mounting holes 8211 extend in directions opposite to the positioning component 83, and the two push blocks 8221 mechanisms 822 each pass through a mounting hole 8211 and can move in the mounting hole 8211 along the long side direction of the mounting hole 8211.

[0130] Specifically, the adjustment plate 821 can be connected to the second cylinder 811, and can move along the Y direction under the drive of the second cylinder 811, driving the push block 8221 mechanism 822 to move forward and backward. When the battery end cover 30 is dropped, the adjustment plate 821 and the push block 8221 mechanism 822 are driven by the second drive assembly 81 to move in the Y direction one after another, that is, in a direction away from the positioning assembly 83, and move forward in the Y direction to press the battery end cover 30 after the battery end cover 30 is dropped.

[0131] The mounting hole 8211 may be a long through hole, and the long side of the mounting hole 8211 extends from the central area of ​​the adjustment plate 821 to the edge of the adjustment plate 821 along the X direction. The adjustment plate 821 may extend along the XZ direction, and the push block 8221 mechanism 822 may pass through the mounting hole 8211 along the Y direction. Such a setting enables the push block mechanism 822 to press the battery end cover 30 with a pressing force direction that is approximately perpendicular to the battery end cover 30 to prevent slippage. The movement of the push block mechanism 822 in the Z direction is limited by the aperture of the mounting hole 8211, and the push block mechanism 822 may be fixed relative to the adjustment plate 821 in the Z direction.

[0132] The adjustment plate 821 can extend from one end of the bottom plate 41 to the other end in the X direction to increase the long side of the mounting hole 8211 as much as possible, thereby ensuring that the moving distance range of the push block mechanism 822 in the X direction can meet the length dimension change of the battery end cover 30.

[0133] The push block mechanism 822 moves in the mounting hole 8211, and the distance between the two push block mechanisms 822 in the X direction is adjusted according to the length of the battery end cover 30. The distance between the push block mechanisms 822 can be adjusted to be close to the spacing of the second reference blocks 831, and the two push block mechanisms 822 can be moved in the X direction to be close to the two second reference blocks 831, so that the force points on both sides of the thickness direction of the battery end cover 30 are kept consistent in the X direction as much as possible, preventing the battery end cover 30 from being deformed and bent due to excessive force, avoiding waste of materials and affecting the laser engraving quality rate.

[0134] In this way, the push block mechanism 822 moves along the long side direction of the mounting hole 8211 to adapt to different lengths of the battery end cover 30, thereby improving the compatibility of the clamp 2000 and ensuring the parallelism of the movement of the movable component 82, which is conducive to maintaining consistent clamping force, thereby accurately controlling the position of the battery end cover 30.

[0135] Please continue reading Figure 5 and Fig.10 In some embodiments, the pushing block mechanism 822 includes a pushing block 8221, an elastic member 8222 and a guide member 8223. When the movable assembly 82 approaches the positioning assembly 83, the pushing block 8221 clamps both sides of the battery end cover 30 in the thickness direction with the positioning assembly 83. The elastic member 8222 is used to apply elastic force to the pushing block 8221 so that the pushing block 8221 presses the battery end cover 30.

[0136] Specifically, the push block 8221 is the part of the push block mechanism 822 that is closest to the positioning assembly 83, and is pressed against the back of the battery end cover 30 when the second clamping assembly 80 clamps the battery end cover 30. When subjected to external force, the elastic member 8222 can produce elastic deformation and generate an elastic force to resist the external force. The push block 8221, the elastic member 8222 and the guide member 8223 can be stacked and assembled together along the Z direction, and the elastic member 8222 can apply an elastic force to the push block 8221 along the Z direction. The guide member 8223 can be a guide pin, and the elastic member 8222 can be a spring and is sleeved on the guide member 8223 to ensure that the direction of the elastic force is consistent. Further, the push block mechanism 822 can also include a flange linear bearing 8224, which can be vertically arranged in the push block mechanism 822 along the Z direction to support and guide the elastic member 8222.

[0137] The elastic member 8222 can apply elastic force to the push block 8221 to automatically adjust the pressing force of the push block 8221 on the battery end cover 30 so that the push block 8221 maintains the pressing force on the battery end cover 30 .

[0138] The push block 8221 can be made of non-metallic materials. For example, the push block 8221 can be made of special polymer materials such as PEEK (polyetheretherketone) to reduce the wear on the battery end cover 30.

[0139] In this way, the elastic member 8222 applies elastic force to the push block 8221 along the thickness direction of the battery end cover 30 , so that the clamping force can be self-adapted effectively, thereby preventing the battery end cover 30 from being deformed.

[0140] See also Figure 7 In some embodiments, the second driving component 81 is movably disposed on the bracket 90 , and the bracket 90 is fixedly connected to the base 40 . The second driving component 81 can drive the movable component 82 to move up and down relative to the bracket 90 .

[0141] Specifically, the bracket 90 can be erected on the bottom plate 41, and the bracket 90 can be formed with an assembly groove 91, and the second drive assembly 81 is installed on the bracket 90 through the assembly groove 91. The assembly groove 91 can extend along the Z direction, and the second drive assembly 81 can move in the assembly groove 91 along the extension direction of the assembly groove 91. The second drive assembly 81 and the adjustment plate 821 can be relatively fixed in the X direction and the Z direction. The adjustment plate 821 defines the relative position of the push block mechanism 822 and the adjustment plate 821 in the Z direction through the mounting hole 8211, and the push block mechanism 822 and the second drive assembly 81 are also relatively fixed in the Z direction. Therefore, the second drive assembly 81 moves in the assembly groove 91 along the Z direction, driving the adjustment plate 821 and the push block mechanism 822 to move up and down along the Z direction, so that the height of the push block 8221 can be roughly flush with the center of the width direction of the battery end cover 30, and the force application points of the clamping force of the second clamping assembly 80 can be reasonably distributed. In some embodiments, the second driving assembly 81 includes a second cylinder 811 , and the bracket 90 may be a cylinder seat 72 .

[0142] In this way, by moving the second drive component 81 up and down relative to the bracket 90, the height at which the second drive component 81 is installed on the bracket 90 is adjusted, so that the position of the push block 8221 in the movable component 82 can adapt to the difference of the battery end cover 30, thereby making the clamp 2000 compatible with battery end covers 30 of a wide range of width sizes, and clamping the battery end cover 30 at a suitable height position, so that the battery end cover 30 is not easily deformed.

[0143] In some embodiments, a second bracket 92 may be further provided on the base 40, and the second bracket 92 is used to install a sensor. The sensor detects whether the battery end cover 30 is fixed in a predetermined position after being clamped by the clamp 2000, thereby further improving the production quality of laser code engraving. The number of sensors may be one, two, or more than two, and the number of second brackets 92 may be consistent with the number of sensors. Multiple second brackets 92 may be distributed outside the two ends of the battery end cover 30 in the length direction, so that the sensor on each second bracket 92 detects the end position of the battery end cover 30 in the length direction.

[0144] In the laser coding process of the battery end cover 30, the two clamping parts 51 are first controlled to move away from each other by the first drive component 60, and the movable component 82 is controlled to move backward by the second drive component 81, so that the clamp 2000 is opened and ready to receive the material. After the battery end cover 30 is placed between the two clamping parts 51 and the positioning component 83 and the movable component 82, the two clamping parts 51 are controlled to move closer to each other by the first drive component 60, and the movable component 82 is controlled to move forward by the second drive component 81 so that the battery end cover 30 contacts the positioning component 83, thereby clamping the battery end cover 30 in the X direction and the Y direction. When the clamp 2000 clamps the battery end cover 30, adjust the clamping part 51 to be fixed tightly to the short side of the battery end cover 30, and simultaneously move the limit block 54 to the position close to the outside of the clamping part 51 for fixed installation, so as to achieve double fastening, and then adjust the spacing of the positioning component 83 to be fixed at a suitable position, and finally adjust the spacing of the cushion assembly 70 to be fixed at a suitable position.

[0145] The fixture 2000 of the embodiment of the present application is compatible with battery end covers 30 of a wide range of sizes, is easy and quick to adjust, has high correction accuracy, and effectively improves the production efficiency and product quality of laser engraving of the battery end covers 30.

[0146] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A clamp for clamping a battery end cover, characterized in that: include: Base; and The first clamping assembly comprises two clamping parts arranged opposite to each other, the two clamping parts can be arranged on the base close to or far away from each other, and the two clamping parts are used to clamp the two ends of the battery end cover in the length direction.

2. The clamp according to claim 1, characterized in that: The first clamping assembly includes two adjustment components arranged in parallel along the direction in which the two clamping components approach or move away from each other, and the adjustment components are formed with a plurality of adjustment holes, which are arranged along the direction in which the two clamping components are arranged, and the adjustment holes are used to adjust the distance between the two clamping components.

3. The clamp according to claim 2, characterized in that: The adjusting component is provided with a positioning structure, and the positioning structure is used to cooperate with the positioning piece of the battery end cover to define the positioning reference of the first clamping assembly, and the two clamping components are symmetrically arranged relative to the positioning reference.

4. The clamp according to claim 2, characterized in that: The clamp comprises a first driving assembly, the first driving assembly is connected to the adjusting component, and the first driving assembly is used to drive the adjusting component to move relative to the base.

5. The clamp according to claim 2, characterized in that: The first clamping assembly also includes a guiding assembly, which includes a slider and a slide rail. The slider is slidably disposed on the slide rail, and the slide rail is fixed on the base. The slider and the slide rail extend along the arrangement direction of the two clamping components, and the slider is fixedly connected to the adjusting component.

6. The clamp according to claim 2, characterized in that: The first clamping assembly further comprises a limit block arranged on the adjusting component, the limit block is located on a side of the clamping component away from the other clamping component, the limit block abuts against the clamping component and limits the position of the clamping component on the adjusting component.

7. The clamp according to claim 1, characterized in that: The clamping component includes a first reference block and a contact piece installed on the first reference block, wherein the contact piece is arranged on a surface of one side opposite to the two first reference blocks, and an outer peripheral surface of the contact piece protrudes from a surface of the first reference block where the contact piece is located, and the contact piece contacts with both ends of the battery end cover in the length direction when the clamping component clamps the battery end cover.

8. The clamp according to claim 1, characterized in that: The clamp includes a cushion assembly movably connected to the base, the cushion assembly is arranged between the two clamping parts, the cushion assembly can move along the arrangement direction of the two clamping parts, and the cushion assembly is used to support one side end of the battery end cover in the width direction.

9. The clamp according to claim 8, characterized in that The cushion seat assembly includes a cushion seat and a cushion block arranged on the cushion seat, the cushion block is formed with an arc surface, the arc surface of the cushion block protrudes from the outer surface of the cushion seat, and the arc surface of the cushion block contacts the battery end cover when the cushion seat assembly supports the battery end cover.

10. The clamp according to claim 1, characterized in that The clamp comprises a second clamping assembly arranged on the base, and the second clamping assembly is used for clamping two sides of the battery end cover in a thickness direction.

11. The clamp according to claim 10, characterized in that The second clamping assembly includes a second driving assembly, a movable assembly and a positioning assembly. The second driving assembly is used to drive the movable assembly to approach or move away from the positioning assembly along the thickness direction of the battery end cover. The positioning assembly and the movable assembly jointly clamp the two sides of the battery end cover in the thickness direction.

12. The clamp according to claim 11, characterized in that The number of the positioning components is two, and the two positioning components are arranged on the base in opposite directions of the clamping components and can be moved away from or close to each other.

13. The clamp according to claim 11, characterized in that The movable component includes an adjustment plate and two pushing block mechanisms movably arranged relative to the adjustment plate, the adjustment plate is provided with two mounting holes, the long sides of the mounting holes extend in directions opposite to the positioning component, the two pushing block mechanisms each pass through one of the mounting holes and can move in the mounting hole along the long side direction of the mounting hole.

14. The clamp according to claim 13, characterized in that The pushing block mechanism includes a pushing block, an elastic member and a guide member. When the movable assembly approaches the positioning assembly, the pushing block clamps the two sides of the battery end cover in the thickness direction with the positioning assembly. The elastic member is used to apply elastic force to the pushing block so that the pushing block presses the battery end cover.

15. The clamp according to claim 11, characterized in that The second driving component is movably arranged on a bracket, the bracket is fixedly connected to the base, and the second driving component can drive the movable component to move up and down relative to the bracket.

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