Cylindrical battery clamp and welding apparatus

Abstract

The application provides a cylindrical battery clamp and welding equipment, and belongs to the technical field of batteries. The cylindrical battery clamp comprises a body, a magnetic attraction part and at least one abutting part. The body has a containing part for containing at least part of a cylindrical battery. The surface of the containing part is provided with at least one sub-groove, and the sub-groove has a first opening. The at least one abutting part is arranged in the at least one sub-groove through the first opening and protrudes from the surface of the containing part. The abutting part is used for abutting to the side surface of the cylindrical battery to isolate the side surface of the cylindrical battery from the surface of the containing part. The magnetic attraction part is arranged on the body. The magnetic attraction part can generate a magnetic attraction force acting on the side surface of the cylindrical battery, so that the cylindrical battery is fixed in the containing part. The abutting part can isolate the cylindrical battery from the containing part. The metal particles adsorbed on the surface of the containing part are not easy to contact the cylindrical battery, and the problem that the shell of the cylindrical battery is easily scratched can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, and particularly relates to a cylindrical battery clamp and welding equipment. BACKGROUND

[0002] In the production and circulation process of a battery, a clamp is usually used to clamp the shell of the battery, and the clamp is moved to transfer the battery between various production stations.

[0003] However, the clamp in the related art is prone to scratching the shell of the battery when moving the battery, thereby damaging the rust-proof plating layer of the shell and affecting the service life of the battery. Therefore, how to effectively prevent the battery shell from being scratched becomes a problem to be solved. SUMMARY

[0004] An object of the present application is to provide a cylindrical battery clamp and welding equipment to improve the problem that the clamp in the related art is prone to scratching the shell of the battery.

[0005] An embodiment of the first aspect of the present application provides a cylindrical battery clamp, comprising: a body, a magnetic attraction part, and at least one abutting part; the body has a containing part for containing at least part of a cylindrical battery, the surface of the containing part is provided with at least one sub-groove, and the sub-groove has a first opening; the at least one abutting part is arranged in the at least one sub-groove through the first opening and protrudes from the surface of the containing part, and the abutting part is used to abut against the side surface of the cylindrical battery to isolate the side surface of the cylindrical battery from the surface of the containing part; the magnetic attraction part is arranged on the body, and the magnetic attraction part can generate a magnetic attraction force acting on the side surface of the cylindrical battery, so that the cylindrical battery is fixed in the containing part.

[0006] In the embodiment, the sub-grooves are arranged in the accommodating portion, and the abutting members are arranged in the sub-grooves and protrude from the surface of the accommodating portion. Since the abutting members can isolate the cylindrical battery from the surface of the accommodating portion, there is a gap between the surface of the accommodating portion and the cylindrical battery, and the metal particles adsorbed on the surface of the accommodating portion are not easy to contact the cylindrical battery. Therefore, the side surface of the cylindrical battery is not easy to be scratched by the metal particles, and the rust-proof plating layer of the cylindrical battery is protected. In addition, the contact area between the shell of the cylindrical battery and the surface of the accommodating portion can be reduced, and the wear of the shell is reduced. In addition, when the cylindrical battery is ejected, that is, the cylindrical battery clamp moves along the axis direction of the cylindrical battery, since the cylindrical battery is isolated from the surface of the accommodating portion, the burrs or burrs formed by the welding of the end cover of the cylindrical battery are not easy to contact the surface of the accommodating portion, so as not to be easily scratched to fall off the metal particles, thereby reducing the formation of the metal particles, and reducing the risk of scratching the shell and the rust-proof plating layer. At the same time, the burrs or burrs are also not easy to scratch the surface of the accommodating portion, thereby reducing the hard scratches on the surface of the accommodating portion and reducing the risk of scratching the shell and the rust-proof plating layer by the hard scratches on the surface of the accommodating portion. The sub-groove can also provide space for the installation of the abutting member, which is conducive to the installation of the abutting member.

[0007] In some embodiments, the surface of the accommodating portion is provided with a plurality of sub-grooves arranged at intervals along the circumference of the cylindrical battery; each of the plurality of sub-grooves is provided with at least one abutting member.

[0008] In the embodiment, by arranging a plurality of sub-grooves, the cylindrical battery can be in contact with the surface of the accommodating portion, that is, the shell of the cylindrical battery is in hard contact with the surface of the accommodating portion, which further improves the phenomenon that the shell is easy to be scratched.

[0009] In some embodiments, the sub-groove is arranged through the body along a first direction, wherein the first direction is parallel to the axis of the cylindrical battery.

[0010] By arranging the sub-groove through the body along the first direction, the abutting member can be moved relative to the sub-groove along the first direction, so as to install or dismount the abutting member. It can be understood that the abutting member can be a consumable part and needs to be replaced regularly. By arranging the through sub-groove, the replacement can be facilitated and the efficiency is improved.

[0011] In some embodiments, the abutting member has an arc-shaped surface for contacting the cylindrical battery.

[0012] In the embodiment, the metal particles falling on the surface of the abutting part can move along the surface of the abutting part to the surface of the containing part outside the abutting part under the magnetic attraction of the magnetic attraction part. The arc-shaped surface of the abutting part makes the metal particles more easily move to the surface of the containing part outside the abutting part, thereby reducing the metal particles adsorbed on the surface of the abutting part and reducing the risk of scratching the cylindrical battery. In addition, non-metal particles are also not easy to accumulate on the arc-shaped surface, further reducing the risk of scratching the cylindrical battery by non-metal particles and protecting the rust-proof plating layer of the cylindrical battery.

[0013] In some embodiments, the hardness D1 of the abutting part and the hardness D2 of the surface of the containing part satisfy: D1 < D2.

[0014] The hardness D1 of the abutting part is less than the hardness of the body, which can make the body have a higher hardness and not be easily damaged, so as to not easily form scratches on the surface of the containing part, thereby improving the phenomenon that hard scratches on the surface of the containing part scratch the cylindrical battery in turn. At the same time, the hardness of the abutting part is small, which can reduce the friction with the cylindrical battery, and the hardness of the abutting part is less than the body, which can be a vulnerable part and be replaced in time, thereby achieving the effect of protecting the cylindrical battery and the body.

[0015] In some embodiments, the hardness D1 of the abutting part satisfies: A70 ≤ D1 ≤ A90.

[0016] By setting the hardness of the abutting part to be not more than A90, the shell of the cylindrical battery can be protected from being scratched. By setting the hardness of the abutting part to be not less than A70, the service life of the abutting part can be greatly improved, and the cost of consumables is reduced.

[0017] In some embodiments, the direction passing through the geometric center of the magnetic attraction part and perpendicular to the axis of the cylindrical battery is the first projection direction, and the first projection of the magnetic attraction part on the surface of the containing part in the first projection direction is arranged separately from the abutting part.

[0018] In the embodiment, the abutting member is spaced apart from the first projection, so that the abutting member can be away from the magnetic attraction part, and the magnetic attraction force at the position of the abutting part is small. Even if the metal particles fall on the surface of the abutting part, the metal particles are not easily attracted to the surface of the abutting part due to the small magnetic attraction force at the position away from the magnetic attraction part, so that the metal particles on the surface of the abutting part can be reduced, and the risk of scratching the cylindrical battery can be reduced. In addition, even if there are metal particles on the surface of the abutting part, the magnetic attraction force acting on the metal particles will cause the metal particles to move to the area with a large magnetic attraction force, i.e., the area outside the abutting part (the position on the surface of the containing part with a strong magnetic attraction force), so that the metal particles can move from the surface of the abutting part to the surface of the containing part, and then enter the space between the cylindrical battery and the surface of the containing part, thereby reducing the accumulation of metal particles on the surface of the abutting part. In addition, the abutting member and the magnetic attraction part are arranged staggered with each other, compared with the abutting member arranged between the magnetic attraction part and the cylindrical battery, the magnetic attraction force acting on the cylindrical battery is not weakened, and the fixing firmness of the cylindrical battery is improved. In addition, since the contact position of the abutting member and the cylindrical battery is away from the magnetic attraction part, the magnetic attraction force acting on the cylindrical battery at this position is small, and the wear of the abutting member is relatively small, so that the abutting member can be protected to some extent, and the service life of the abutting member is improved.

[0019] In some embodiments, the magnetic attraction part includes a plurality of magnetic attraction assemblies arranged spaced apart along the circumference of the cylindrical battery; a direction passing through the geometric center of the magnetic attraction assembly and perpendicular to the axis of the cylindrical battery is a second projection direction, the magnetic attraction assembly has a second projection on the surface of the containing part along the second projection direction; among the plurality of second projections of the plurality of magnetic attraction assemblies, the abutting member is arranged between two adjacent second projections, or the abutting member is arranged outside the outermost second projection.

[0020] The magnetic attraction assembly is arranged on the outer side of the body away from the accommodating portion, and the magnetic attraction assembly is arranged in the circumferential direction of the cylindrical battery. The magnetic attraction assembly can simultaneously apply magnetic attraction force to the cylindrical battery from different angles, thereby improving the stability of clamping the cylindrical battery. Since the magnetic attraction assembly is arranged in the circumferential direction of the cylindrical battery, the magnetic attraction force of each magnetic attraction assembly on the cylindrical battery is more uniformly distributed, so that the spacing between the cylindrical battery and the surface of the accommodating portion is more uniform, thereby further reducing the risk of scratching the cylindrical battery. Moreover, the abutting member is away from the magnetic attraction assembly, and the magnetic attraction force at the abutting portion position is small. Even if metal particles fall on the surface of the abutting portion, since the position is away from the magnetic attraction portion, the magnetic attraction force is small, and the metal particles are not easily attracted to the surface of the abutting portion, thereby reducing the metal particles on the surface of the abutting portion and reducing the risk of scratching the cylindrical battery. In addition, even if there are metal particles on the surface of the abutting portion, the magnetic attraction force will cause them to gather in the direction of greater magnetic attraction force, that is, to move to the second projection (a position with stronger magnetic attraction force on the surface of the accommodating portion) area outside the abutting portion, so that the metal particles can move from the surface of the abutting portion to the surface of the accommodating portion, and then enter the spacing between the cylindrical battery and the surface of the accommodating portion, thereby reducing the accumulation of metal particles on the surface of the abutting portion. In addition, compared with the abutting member arranged between the magnetic attraction portion and the cylindrical battery, the magnetic attraction force on the cylindrical battery is not weakened, and the fixing stability of the cylindrical battery is improved. Moreover, since the contact position of the abutting member and the cylindrical battery is away from the magnetic attraction assembly, the magnetic attraction force on the cylindrical battery at this position is small, and the wear of the abutting member is relatively small, thereby protecting the abutting member to a certain extent and improving its service life.

[0021] In some embodiments, each magnetic attraction assembly comprises a plurality of magnetic attraction pieces arranged in a first direction, wherein the first direction is arranged parallel to the axis of the cylindrical battery.

[0022] In the embodiment, a plurality of magnetic attraction pieces are arranged to apply magnetic attraction force at multiple positions along the axis direction of the cylindrical battery, so that the cylindrical battery can be stably clamped. At the same time, the number of magnetic attraction pieces can be adjusted to adjust the size of the magnetic attraction force. Compared with a long strip-shaped magnet, the magnetic attraction assembly provided in the embodiment can adjust the size of the magnetic attraction force according to the demand, and has good applicability.

[0023] In some embodiments, a plurality of mounting holes are arranged on the outer side of the body away from the accommodating portion, and the plurality of magnetic attraction pieces are respectively and correspondingly arranged in the plurality of mounting holes.

[0024] The magnetic attraction force generated by the magnetic attraction pieces in the mounting holes can attract the cylindrical battery to the accommodating portion, and the magnetic attraction pieces can be arranged close to the cylindrical battery regardless of the shape of the body, so as to improve the magnetic attraction force on the cylindrical battery and make the magnetic attraction pieces more easily attract the cylindrical battery.

[0025] In some embodiments, the axis of the mounting hole is perpendicular to the axis of the cylindrical battery, the magnetic member comprises a plurality of sub magnetic members arranged along the axis of the mounting hole, and each of the plurality of sub magnetic members is accommodated in the mounting hole.

[0026] In this embodiment, the magnetic attraction force of the magnetic member can be adjusted by adjusting the number of sub magnetic members, and the applicability is good.

[0027] In some embodiments, the cylindrical battery clamp further comprises a blocking piece, the blocking piece is detachably connected to the end surface of the body in the first direction, one end of the sub slot in the first direction has a second opening, and one end of the accommodation portion in the first direction has a third opening in communication with the second opening; the blocking piece covers at least part of the second opening, and the blocking piece is located outside the third opening; wherein the first direction is parallel to the axis of the cylindrical battery.

[0028] In this embodiment, the blocking piece can be quickly replaced, the downtime maintenance time caused by replacing the abutting piece is reduced, and the production efficiency is improved.

[0029] In some embodiments, the abutting piece extends in the first direction, and one end of the abutting piece abuts against the blocking piece in the first direction.

[0030] By arranging the abutting piece to abut against the two blocking pieces, the abutting piece can be prevented from moving in the first direction relative to the body, and the reliability of the relative movement between the cylindrical battery and the abutting piece is improved.

[0031] In some embodiments, the surface of the accommodation portion comprises an intermediate section and a guide section connected to one end of the intermediate section in the first direction, the guide section is arranged inclined relative to the intermediate section; the cross section of the guide section is gradually increased from one end close to the intermediate section to one end away from the intermediate section, with a plane perpendicular to the first direction as a cross section; wherein the first direction is parallel to the axis of the cylindrical battery.

[0032] In this embodiment, by arranging the inclined guide section, the size of the opening at both ends of the accommodation portion in the first direction can be expanded, so that the cylindrical battery can be more easily moved into the accommodation portion along the first direction, and the edge of the accommodation portion can be prevented from scratching the shell of the cylindrical battery.

[0033] In some embodiments, the surface of the accommodation portion is provided with a slope surface at both ends in the circumferential direction of the cylindrical battery, the accommodation portion has a fourth opening between the two slope surfaces, a second direction is perpendicular to the fourth opening and extends from the inside to the outside of the accommodation portion, and the distance between the two slope surfaces gradually increases along the second direction.

[0034] In this embodiment, by arranging the slope surface, the fourth opening of the accommodation portion can be expanded from the inside to the outside, and the edge of the accommodation portion can be prevented from scratching the shell of the cylindrical battery.

[0035] The embodiments of the second aspect of the present application provide a welding device comprising the cylindrical battery clamp of any one of the above.

[0036] The above description is only a summary of the technical solutions of the present application. In order to enable one skilled in the art to better understand the technical means of the present application and to implement the same according to the contents of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more apparent and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0037] In the drawings, like reference numerals refer to same or similar components throughout the several views. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments in accordance with the present disclosure and should not be considered limiting of the scope of the present application.

[0038] Figure 1 An exploded structural schematic diagram of a battery device provided for some embodiments of the present application;

[0039] Figure 2 A structural schematic diagram of a cylindrical battery provided for some embodiments of the present application;

[0040] Figure 3 A structural schematic diagram of a cylindrical battery clamp provided for some embodiments of the present application;

[0041] Figure 4 A structural schematic diagram of a cylindrical battery clamp provided for some embodiments of the present application;

[0042] Figure 5 An exploded structural schematic diagram of Figure 4 ;

[0043] Figure 6 A connection schematic diagram of the cylindrical battery clamp and the cylindrical battery in Figure 4 ;

[0044] Figure 7 A top view of Figure 4 ;

[0045] Figure 8 A front view of Figure 4 ;

[0046] Figure 9 A structural schematic diagram of a cylindrical battery clamp provided for some embodiments of the present application;

[0047] Figure 10 A structural schematic diagram of Figure 9 from another angle;

[0048] Figure 11 A back view of Figure 9 ;

[0049] Figure 12 is a side view of the battery device 100; Figure 9

[0050] Figure 13 is an exploded structural schematic view of the battery device 100; Figure 10

[0051] Figure 14 is a top view of the battery device 100; Figure 9

[0052] Figure 15 is a front view of the battery device 100; Figure 9

[0053] Figure 16 is a structural schematic view of a cylindrical battery clamp provided by some embodiments of the present application;

[0054] Figure 17 is a structural schematic view of a magnetic attraction member in the cylindrical battery clamp. Figure 13

[0055] Legend of reference signs:

[0056] battery device 100;

[0057] cylindrical battery 10, end cover 12, shell 13;

[0058] body 400, accommodating portion 410, surface 411 of the accommodating portion, spacing 412, third opening 413, intermediate section 414, guide section 415, inclined surface 416, fourth opening 417, sub-groove 420, first opening 421, second opening 422, mounting hole 430;

[0059] magnetic attraction portion 500, magnetic attraction assembly 510, first projection 511, second projection 512, magnetic attraction member 520, sub-magnetic attraction member 521;

[0060] abutting member 600, first surface 610;

[0061] blocking member 700;

[0062] box 20, first portion 21, second portion 22. DETAILED DESCRIPTION

[0063] The embodiments of the technical solutions of the present application will be described in detail below in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0064] ​​​​​Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise noted, the terms "including" and "comprising" are open-ended and do not exclude the presence of unrecited elements or limitations.

[0065] 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 "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0066] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, nor is it necessarily a separate or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with each other.

[0067] 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, which means that there can be three relationships, for example, a and / or b, which means that there are three cases of a alone, a and b together, and b alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0068] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0069] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0070] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mount", "connect", "connect", "fix" and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0071] At present, from the development of market situation, the application of rechargeable battery is more and more widely. Rechargeable battery is not only applied to energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely applied to various electronic equipment, such as electric bicycle, electric motorcycle, electric vehicle and other electric vehicles, military equipment and aerospace and many other fields. With the continuous expansion of the application field of rechargeable battery, the market demand is also increasing.

[0072] The cylindrical battery usually comprises a shell and an electrode assembly arranged in the shell. In the production process of the battery, especially in the production and transfer process of welding the top cover of the cylindrical battery shell, the cylindrical battery is usually clamped by a clamp and then transferred to a welding station. The clamp usually comprises a magnet which can attract the steel shell of the cylindrical battery so that the shell of the cylindrical battery can be attached to the surface of the clamp to achieve fixation.

[0073] However, after the top cover is welded, when the cylindrical battery is ejected and moves up and down relative to the clamp, the welding burr or incoming burr will be scraped off to form metal particles during contact with the clamp. The metal particles will be attracted by the magnet of the clamp and then fall on the contact surface between the clamp and the cylindrical battery, thereby easily leaving scratches on the shell of the cylindrical battery and damaging the surface rust-proof plating layer. In the subsequent process, rust is prone to occur at the scratches.

[0074] In addition, in addition to the scraped metal particles, the welding burr will also form hard scratches on the surface of the clamp, which will in turn scratch the surface of the cylindrical battery and also leave scratches on the shell.

[0075] In addition to the above-mentioned metal particles, the processing workshop itself will also produce some metal particles which are also easy to be attracted by the clamp and scratch the shell of the cylindrical battery.

[0076] To solve at least one of the above problems, the embodiments of the present application provide a cylindrical battery clamp, comprising: a body, a magnetic attraction part, and at least one abutting part, the body has a receiving part for receiving at least part of a cylindrical battery, a surface of the receiving part is provided with at least one sub-groove, and the sub-groove has a first opening; the at least one abutting part is arranged in the at least one sub-groove through the first opening and protrudes from the surface of the receiving part, the abutting part is used to abut against a side surface of the cylindrical battery to isolate the side surface of the cylindrical battery from the surface of the receiving part; the magnetic attraction part is arranged on the body, and the magnetic attraction part can generate a magnetic attraction force acting on the side surface of the cylindrical battery, so that the cylindrical battery is fixed in the receiving part. The cylindrical battery clamp provided by the embodiments of the present application can isolate the cylindrical battery and the surface of the receiving part from each other when the cylindrical battery is adsorbed, and the metal particles adsorbed on the surface of the receiving part can be located in the interval between the two, which is difficult to contact the side surface of the cylindrical battery. Therefore, the side surface of the cylindrical battery is not easy to be scratched by the metal particles, and the rust-proof plating layer of the battery is protected.

[0077] The technical solutions described in the embodiments of the present application are suitable for clamping a cylindrical battery, so that the cylindrical battery can be transferred between various stations. It can be understood that the cylindrical battery clamp provided by the embodiments of the present application can be used in welding equipment used in the welding process of the cylindrical battery, and of course can also be used in other production and assembly processes of the cylindrical battery, which is not limited by the embodiments of the present application.

[0078] The cylindrical battery related by the embodiments of the present application can be used in a battery device. The energy storage device using the battery device as a power source includes one or more battery clusters to improve the voltage and capacity of the energy storage device. The battery cluster can include a plurality of battery devices, and the plurality of battery devices are connected in series through a busbar component to improve the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to improve the capacity of the energy storage device.

[0079] The energy storage device can be used in energy storage power stations, wind power systems, solar power systems, mobile power systems, or temporary power supply systems, etc. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during the low electricity consumption valley, and provide electrical energy for related users or electrical devices during the electricity consumption peak. The energy storage system provided by the embodiments of the present application can be any power system that needs to use the energy storage device. As an example, the energy storage device is an energy storage container or an energy storage cabinet.

[0080] In this application embodiment, the power-consuming device using a battery as a power source can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0081] It should be understood that the technical solutions described in the embodiments of this application are not limited to the energy storage devices and electrical devices described above, but can also be applied to all battery devices including housings and electrical devices using battery devices.

[0082] Please refer to Figure 1 , Figure 1 This is an exploded structural diagram of a battery device provided in some embodiments of this application.

[0083] The battery device 100 mentioned in the embodiments of this application may include one or more cylindrical battery assemblies for providing voltage and capacity. The cylindrical battery assembly may include multiple cylindrical cells 10, which are connected in series, parallel, or mixed connection via a busbar.

[0084] In some embodiments, a cylindrical battery cell assembly is typically formed by arranging a plurality of cylindrical cells 10.

[0085] As an example, the cylindrical battery assembly can be a battery module, which consists of multiple cylindrical batteries 10 arranged and fixed together to form a single module. As another example, the battery module can be formed by bundling multiple cylindrical batteries 10 together with cable ties.

[0086] In some embodiments, such as Figure 1 As shown, the battery device 100 can be a battery pack, which includes a housing 20 and one or more cylindrical battery components housed within the housing 20. The housing 20 can be a simple three-dimensional structure such as a single cuboid, cylinder, or sphere, or a complex three-dimensional structure composed of combinations of simple cuboids, cylinders, or spheres. The material of the housing 20 can be an alloy such as aluminum alloy or iron alloy, a polymer such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin.

[0087] As an example, the cylindrical battery assembly can be a battery module, and the cylindrical battery assembly can be accommodated in the case 20 by fixing the battery module in the case 20.

[0088] As an example, the cylindrical battery assembly can also be accommodated in the case 20 by fixing a plurality of cylindrical batteries 10 directly to the case 20.

[0089] As an example, the case 20 can include a first portion 21 and a second portion 22. The first portion 21 and the second portion 22 are coupled so that an enclosed space is formed inside the case 20 to accommodate the cylindrical battery assembly. The enclosed here means covered or closed, which can be non-sealed or sealed to avoid liquids or other foreign objects affecting the charging or discharging of the cylindrical battery 10. The first portion 21 can be a top cover or a bottom plate.

[0090] As an example, the case 20 can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame so that an enclosed space is formed inside the case 20 to accommodate the cylindrical battery assembly.

[0091] In some embodiments, the case 20 can be part of a chassis structure of a vehicle. For example, part of the case 20 can be at least part of a floor of the vehicle, or part of the case 20 can be at least part of a cross beam and a longitudinal beam of the vehicle.

[0092] Embodiments of the present application provide that the cylindrical battery 10 can be a secondary battery, which means that the cylindrical battery 10 can be used continuously by activating the active material through charging after discharging.

[0093] The cylindrical battery 10 can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited thereto.

[0094] Please refer to Figure 2 , Figure 2 The structure of the cylindrical battery provided by some embodiments of the present application is shown in the figure. The cylindrical battery 10 refers to the smallest unit that constitutes a battery. As Figure 2 , the cylindrical battery 10 includes a shell electrode assembly and other functional components. The shell can include a housing 13 and an end cover 12 connected to the housing 13.

[0095] The end cover 12 refers to a component that is attached to the opening of the case 13 to seal the internal environment of the cylindrical battery 10 from the external environment. Without limitation, the shape of the end cover 12 can be adapted to the shape of the case 13 to fit the case 13. In some embodiments, the end cover 12 can be made of a material with certain hardness and strength, such as an aluminum alloy, so that the end cover 12 is less likely to deform when subjected to a pressing impact, and the cylindrical battery 10 can have higher structural strength and improved safety performance. The end cover 12 can be provided with functional components such as electrode terminals. The electrode terminals can be used to electrically connect with the electrode assembly for outputting or inputting the electrical energy of the cylindrical battery 10. In some embodiments, the end cover 12 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the cylindrical battery 10 reaches a threshold value. The material of the end cover 12 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating member can also be provided on the inner side of the end cover 12, which can be used to isolate the electrical connection components in the case 13 from the end cover 12 to reduce the risk of short circuit. Exemplarily, the insulating member can be plastic, rubber, etc.

[0096] The case 13 is a component for fitting the end cover 12 to form the internal environment of the cylindrical battery 10, wherein the formed internal environment can be used to accommodate the electrode assembly, the electrolyte, and other components. The case 13 and the end cover 12 can be independent components, and an opening can be provided on the case 13, and the end cover 12 is attached to the opening to form the internal environment of the cylindrical battery 10. Without limitation, the end cover 12 and the case 13 can also be integrated, specifically, the end cover 12 and the case 13 can form a common connection surface before other components enter the case, and when it is necessary to seal the internal environment of the case 13, the end cover 12 is attached to the case 13. The case 13 can be various shapes and sizes, such as a cuboid, a cylinder, a hexagonal prism, etc. Specifically, the shape of the case 13 can be determined according to the specific shape and size of the electrode assembly. The material of the case 13 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0097] The electrode assembly is a component in which electrochemical reactions occur in the cylindrical battery 10. One or more electrode assemblies can be contained in the case 13. The electrode assembly is mainly formed by winding and forming a positive electrode sheet and a negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have a portion of active material constituting the main body of the electrode assembly.

[0098] For the sake of convenience, the following describes the cylindrical battery as an example, and in other embodiments, the cylindrical battery can also be other shapes, such as a rectangular shape, etc.

[0099] Figure 3This is a schematic diagram of the structure of a cylindrical battery clamp provided in some embodiments of this application; Figure 4 This is a schematic diagram of the structure of a cylindrical battery clamp provided in other embodiments of this application; Figure 5 for Figure 4 A schematic diagram of the decomposed structure; Figure 6 for Figure 4 A schematic diagram showing the connection between the cylindrical battery clamp and the cylindrical battery. Figure 7 for Figure 4 Top view; Figure 8 for Figure 4 The front view. Please refer to... Figures 3 to 8 This application provides a cylindrical battery clamp, including: a body 400, a magnetic suction part 500, and at least one abutment member 600. The body 400 has a receiving part 410 for accommodating at least a portion of a cylindrical battery 10. The surface 411 of the receiving part is provided with at least one sub-groove 420, and the sub-groove 420 has a first opening 421. At least one abutment member 600 passes through the first opening, is inserted into at least one sub-groove 420, and protrudes from the surface 411 of the receiving part. The abutment member 600 is used to abut against the side surface of the cylindrical battery 10 to isolate the side surface of the cylindrical battery 10 from the surface 411 of the receiving part. The magnetic suction part 500 is disposed on the body 400 and is capable of generating a magnetic attraction force acting on the side surface of the cylindrical battery to fix the cylindrical battery 10 in the receiving part 410.

[0100] The cylindrical battery clamp can be used to clamp the cylindrical battery 10. The cylindrical battery clamp may include a body 400, a magnetic part 500, and abutment 600.

[0101] The body 400 can be made of materials such as plastic or rubber, and can have a receiving portion 410 formed therein. The receiving portion 410 can be disposed on one side surface of the body 400, for example, it can be a receiving groove. The receiving portion 410 can be used to accommodate at least a portion of the cylindrical battery 10. Depending on the shape of the cylindrical battery 10, the receiving portion 410 can have different shapes. For example, the receiving portion 410 can be... Figure 4 The arc-shaped groove shown can have a central angle in different ranges, for example, it can be less than or equal to 180°, so that the body 400 can approach the cylindrical battery from the outside of the side surface of the cylindrical battery along the radial direction of the cylindrical battery. Alternatively, the body 400 can also move relative to the cylindrical battery from one end of the cylindrical battery along the axis of the cylindrical battery, thereby accommodating at least a portion of the cylindrical battery in the receiving part. Of course, the central angle of the arc-shaped groove can also be greater than 180° and less than or equal to 360°. In this case, the body 400 can move relative to the cylindrical battery from one end of the cylindrical battery along its axial direction, thereby accommodating at least a portion of the cylindrical battery in the receiving part.

[0102] When the accommodation portion accommodates the cylindrical battery, the surface 411 of the accommodation portion can face the side surface of the cylindrical battery 10, i.e., the cylindrical surface of the cylindrical battery.

[0103] It can be understood that the sub-groove 420 is arranged in the accommodation portion, which can be recessed from the surface 411 of the accommodation portion, and a first opening 421 can be formed on the surface 411 of the accommodation portion, and the accommodation space of the sub-groove 420 and the accommodation space of the accommodation portion can be communicated through the first opening 421. The number of sub-grooves 420 can be one or more, for example, 2, 3, 4, etc.

[0104] It can be understood that the number of abutting pieces 600 can be the same as the number of sub-grooves 420, and each abutting piece 600 can be connected in a sub-groove. Each of the at least one abutting piece can be arranged in one of the at least one sub-groove through one first opening. In other embodiments, a plurality of abutting pieces can also be arranged in each sub-groove, and the plurality of abutting pieces can be arranged in one sub-groove through the first opening.

[0105] In this embodiment, the abutting piece 600 can be snap-fitted or interference-fitted in the sub-groove. It can be understood that the abutting piece 600 can be partially accommodated in the sub-groove, and the other part can pass through the first opening 421, so that the part of the abutting piece 600 can protrude from the surface 411 of the accommodation portion.

[0106] The abutting piece 600 can isolate the cylindrical battery 10 from the surface 411 of the accommodation portion. Specifically, the abutting piece 600 can protrude from the surface 411 of the accommodation portion, and when the cylindrical battery 10 is clamped in the accommodation portion, the abutting piece 600 can abut against the side surface of the cylindrical battery 10, thereby forming a gap between the side surface of the cylindrical battery 10 and the surface 411 of the accommodation portion. When one abutting piece is arranged, the abutting piece 600 can have a surface that fits the side surface of the cylindrical battery, thereby achieving the purpose of isolating the cylindrical battery from the accommodation portion.

[0107] In some embodiments, as Figure 7 The size L1 of the abutting piece protruding from the surface of the accommodation portion can be greater than 0.5 mm and less than or equal to 2 mm, for example, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, etc. It can be understood that the size of the abutting piece protruding from the surface of the accommodation portion is related to the magnetic attraction force of the magnetic attraction portion, and can be set according to the magnetic attraction force.

[0108] The magnetic attraction portion 500 can be connected to the body 400. For example, the body 400 can be provided with a hole or the like structure, and the magnetic attraction portion 500 can be accommodated therein to be embedded in the body 400. Alternatively, the magnetic attraction portion 500 can be connected to the side surface of the body 400. It can be understood that the magnetic attraction portion 500 can be connected to the body 400 by common connection methods, such as clamping, screwing, riveting, and bonding.

[0109] The magnetic attraction part 500 can be a component capable of generating a magnetic attraction force, for example, a permanent magnet capable of generating magnetism. It can be understood that the shell of the cylindrical battery is usually made of steel, iron or other materials that can be attracted by a magnet. The magnetic attraction part can be attracted to the shell of the cylindrical battery, thereby keeping the cylindrical battery and the body relatively fixed, and thus fixing the cylindrical battery in the accommodating part.

[0110] It can be understood that the magnetic attraction part 500 can be arranged on the side of the body away from the accommodating part 410, thereby generating a magnetic attraction force acting on the side surface of the cylindrical battery 10 to attract the cylindrical battery 10 in the accommodating part 410.

[0111] The magnetic attraction force acting on the side surface of the cylindrical battery can mean that the magnetic attraction part is arranged corresponding to the side surface of the cylindrical battery, and the perpendicular line between the magnetic attraction part and the axis of the cylindrical battery passes through the side surface of the cylindrical battery, that is, the side surface of the cylindrical battery receives a larger magnetic attraction force.

[0112] In an embodiment, the magnetic attraction part can be a rubidium magnet, which can have magnetism itself and a strong magnetic attraction force and high reliability. The magnetic attraction part in this embodiment can have a continuous magnetism itself without external energy, thereby simplifying the structure of the cylindrical battery clamp and improving the reliability of clamping.

[0113] When the cylindrical battery needs to be transferred, for example, when the cylindrical battery with a welded end cover is transferred to another station, the cylindrical battery can be lifted out of the cup along the axial direction of the cup by the lifting mechanism. The cylindrical battery clamp can be located at the top of the cup, so that the lifted cylindrical battery can be accommodated in the accommodating part 410 of the body. The magnetic attraction force generated by the magnetic attraction part 500 keeps the cylindrical battery 10 and the body relatively fixed, and the cylindrical battery 10 is clamped by the cylindrical battery clamp. The side surface of the cylindrical battery 10 will abut against the abutting piece 600 under the action of the magnetic attraction force, and the side surface of the cylindrical battery 10 and the surface of the accommodating part are separated by the abutting piece, and have a spacing 412. At this time, the cylindrical battery can be transferred to another station by moving the cylindrical battery clamp.

[0114] It can be understood that the magnetic attraction in the clamp in the related art can attract a large number of metal particles on the surface of the clamp. When the metal particles come into contact with the shell of the cylindrical battery, they are easy to scratch and cause vertical scratches on the shell. In this embodiment, the abutting piece is arranged in the accommodating part to isolate the cylindrical battery and the surface of the accommodating part, and form a spacing therebetween. The metal particles attracted by the magnetic attraction part on the surface of the accommodating part are located in the spacing and are difficult to come into contact with the side surface of the cylindrical battery. Therefore, the side surface of the cylindrical battery is not easy to be scratched by the metal particles, and the rust-proof plating layer of the cylindrical battery is protected. In addition, the contact area between the shell of the cylindrical battery and the surface of the accommodating part can be reduced, and the wear on the shell can be reduced.

[0115] In addition, when the cylindrical battery is in the ejection process, i.e., the relative cylindrical battery clamp moves along the axial direction of the cylindrical battery, due to the existence of the gap between the cylindrical battery and the surface of the accommodating portion, the burrs or burrs formed by the welding of the end cover of the cylindrical battery are not easy to contact the surface of the accommodating portion, so as not to be easily scratched off metal particles, reducing the formation of metal particles, thereby reducing the risk of scratching the shell and the rust-proof plating layer. At the same time, the burrs or burrs are also not easy to scratch the surface of the accommodating portion, thereby reducing the hard scratches on the surface of the accommodating portion and reducing the risk of scratching the shell and the rust-proof plating layer by the hard scratches on the surface of the accommodating portion.

[0116] In the embodiment, by arranging the sub-grooves in the accommodating portion and arranging the abutting pieces in the sub-grooves, the cylindrical battery can be isolated from the surface of the accommodating portion, thereby improving the problem that the cylindrical battery is easily scratched by metal particles. At the same time, by arranging the sub-grooves, space can be provided for the installation of the abutting pieces, which is conducive to the installation of the abutting pieces and improves the connection reliability between the abutting pieces and the body.

[0117] According to some embodiments of the present application, as Figures 6 to 7 The surface 411 of the accommodating portion is provided with a plurality of sub-grooves 420 arranged at intervals along the circumference of the cylindrical battery; and each of the plurality of sub-grooves 420 is provided with at least one abutting piece.

[0118] In the embodiment, the surface 411 of the accommodating portion is provided with a plurality of sub-grooves 420, which can be arranged at intervals along the circumference of the cylindrical battery.

[0119] Figure 7 Two sub-grooves 420 are shown in the figure, and in other embodiments, three, four or more sub-grooves can be provided on the surface of the accommodating portion.

[0120] Similarly, the cylindrical battery clamp can be provided with a plurality of abutting pieces 600, for example, two, three, four or more can be provided. In some embodiments, the number of sub-grooves can be the same as the number of abutting pieces. Each abutting piece 600 can be located in a sub-groove 420. In other embodiments, the number of abutting pieces can be greater than the number of sub-grooves, and a plurality of abutting pieces can be arranged in a sub-groove. It can be understood that the abutting pieces 600 can be connected in the sub-grooves by clamping or bonding, etc., and they can partially protrude from the surface of the accommodating portion.

[0121] In the embodiment, by arranging a plurality of sub-grooves at intervals in the circumferential direction and arranging abutting pieces in the sub-grooves, the cylindrical battery can be effectively isolated from the accommodating portion, so that the cylindrical battery and the surface of the accommodating portion can be in contact, i.e., the shell of the cylindrical battery and the surface of the accommodating portion are in hard contact, and at the same time, the contact area between each abutting piece and the cylindrical battery can be correspondingly reduced, further improving the phenomenon that the shell is easily scratched.

[0122] By adjusting the positions of the sub-grooves and the abutting pieces, the spacing between the cylindrical battery and the surface of the accommodating portion can be made more uniform, and the risk of the position with smaller spacing being easily scratched by metal particles due to non-uniform spacing can be reduced.

[0123] According to some embodiments of the present application, please refer to Figure 4 and Figures 6 to 8 The sub-grooves 420 are arranged through the body 400 along a first direction X, wherein the first direction X is parallel to the axis of the cylindrical battery 10.

[0124] In the present embodiment, the sub-grooves 420 can also extend through both ends of the body along the first direction X, that is, each end of the sub-grooves 420 along the first direction X can be provided with a second opening 422.

[0125] The accommodating portion 410 extends through both ends of the body along the first direction X, that is, each end of the accommodating portion 410 along the first direction X can be provided with a third opening 413, so that the cylindrical battery is more easily placed into the accommodating portion.

[0126] The abutting pieces 600 can extend along the first direction X in a strip shape, so as to be accommodated in the sub-grooves 420.

[0127] By extending the accommodating portion 410 through both ends of the body along the first direction X, the cylindrical battery can be conveniently moved into or out of the accommodating portion, so as to conveniently clamp the cylindrical battery 10. In addition, by arranging the sub-grooves 420 to extend through the body along the first direction X, the abutting pieces can be conveniently moved along the first direction relative to the sub-grooves, so as to install or dismount the abutting pieces. It can be understood that the abutting pieces can be consumable parts and need to be replaced regularly. By arranging the extending sub-grooves, when the abutting pieces need to be dismounted, the abutting pieces can be taken out from the openings at both ends and new abutting pieces can be installed from the openings, so as to conveniently replace the abutting pieces and improve the efficiency.

[0128] It can be understood that the first direction can be other than parallel to the axis of the cylindrical battery 10, and can be arranged according to the situation, for example, the first direction can have an included angle with the axial direction, and the included angle can be an acute angle, for example, 5°, 10°, 15°, 20°, 25°, 30°, etc.

[0129] In some other embodiments, the first direction is perpendicular to the axial direction of the cylindrical battery 10, and the surface 411 of the accommodating portion can be provided with a plurality of sub-grooves arranged at intervals along the first direction, and the cylindrical battery clamp can include a plurality of abutting pieces arranged at intervals along the first direction.

[0130] It can be understood that in the embodiment, each sub-groove can extend along the circumference of the cylindrical battery, for example, the two ends of the sub-groove along its extension direction can penetrate the body 400, for another example, the sub-groove can also not penetrate the body 400, or only one end penetrates the body 400. Each abutting member can also extend along the circumference of the cylindrical battery, and the length of the abutting member along its extension direction can be less than or equal to the length of the sub-groove, so that each abutting member can be mounted in a sub-groove.

[0131] When the cylindrical battery 10 moves along its axial direction from outside the containing portion to inside the containing portion, the cylindrical battery 10 can sequentially contact the plurality of abutting members, and the plurality of abutting members can isolate the surface 411 of the containing portion and the side surface of the cylindrical battery 10.

[0132] The arrangement mode of the sub-grooves provided in the embodiment can isolate the surface 411 of the containing portion and the cylindrical battery, and the structure is simple and easy to implement. In addition, it can be understood that there are many shapes and arrangement modes of sub-grooves that can isolate the cylindrical battery and the surface of the containing portion, and are not limited to the structures given in the above embodiments, and can be set according to actual conditions.

[0133] According to some embodiments of the present application, please refer to Figure 6 The first projection 511 of the magnetic attraction portion 500 along the first projection direction A1 on the surface 411 of the containing portion is arranged separately from the abutting member 600.

[0134] It can be understood that the shape of the magnetic attraction portion 500 can be various, for example, block-shaped, columnar, etc. The geometric center of the magnetic attraction portion 500 is the average position of all vertices or mass points of the magnetic attraction portion.

[0135] Figure 8 A1 is the direction passing through the geometric center of the magnetic attraction portion 500 and perpendicular to the axis of the cylindrical battery 10, that is, the first projection direction. The first projection 511 of the magnetic attraction portion along the first projection direction A1 on the surface 411 of the containing portion can be the total projection of each point in the magnetic attraction portion along the first projection direction A1 on the surface 411 of the containing portion.

[0136] As shown in Figure 8 , in the embodiment, the magnetic attraction portion extending along the first direction X is taken as an example, wherein X can be a direction parallel to the axis of the cylindrical battery. The first projection 511 of the magnetic attraction portion 500 along the first projection direction A1 on the surface of the containing portion can be the diagonal line pattern area in Figure 8 .

[0137] Please continue to refer to Figure 8, the first projection 511 is arranged separately from the first opening 421 of the sub-groove 420, so that the abutting member 600 installed in the sub-groove and passing through the first opening is also arranged separately from the first projection 511, and there is a certain size interval between the two, without intersection or intersection.

[0138] It can be understood that Figure 7 Two abutting members 600 are shown in the embodiment of the magnetic attraction part 500, which can be located on both sides of the first projection 511, and it can be understood that when there are more abutting members 600, the abutting members are also separated from the first projection 511.

[0139] In addition, in other embodiments, the magnetic attraction part 500 can include a plurality of mutually separated sub-parts, and the first projection 511 can be the sum of the sub-projections of each sub-part on the surface of the accommodating part along the first projection direction passing through the respective geometric center. It can be understood that these sub-projections can be isolated from each other, and the abutting member 600 is separated from the first projection 511. It can be understood that each sub-projection is separated from each abutting member 600.

[0140] It can be understood that the abutting member 600 and the first projection 511 are arranged separately, so that the abutting member and the magnetic attraction part are arranged separately in the circumferential direction of the cylindrical battery. The abutting member 600 can be away from the area with strong magnetic attraction (the area where the first projection is located).

[0141] In this embodiment, because the abutting member is separated from the first projection 511, the abutting member can be away from the area with strong magnetic attraction, and the magnetic attraction at the abutting part position is small. Even if metal particles fall on the surface of the abutting part, because the position is away from the magnetic attraction part, the magnetic attraction is small, and the metal particles are not easy to be attracted to the surface of the abutting part, thereby reducing the metal particles on the surface of the abutting part and reducing the risk of scratching the cylindrical battery. In addition, even if there are metal particles on the surface of the abutting part, because the abutting member is separated from the first projection 511, the magnetic attraction of the metal particles will cause them to gather in the direction of strong magnetic attraction, that is, to move to the area of the first projection outside the abutting part (the area with strong magnetic attraction on the surface of the accommodating part), so that the metal particles can move from the surface of the abutting part to the surface of the accommodating part, and then enter the interval between the cylindrical battery and the surface of the accommodating part, reducing the accumulation of metal particles on the surface of the abutting part.

[0142] In addition, the abutting member and the magnetic attraction part are arranged separately, which will not weaken the magnetic attraction of the cylindrical battery compared to the abutting member arranged between the magnetic attraction part and the cylindrical battery, thereby improving the fixing reliability of the cylindrical battery. And because the contact position of the abutting member with the cylindrical battery is away from the magnetic attraction part, the magnetic attraction of the cylindrical battery at this position is small, and the wear of the abutting member is relatively small, thereby protecting the abutting member to a certain extent and improving its service life.

[0143] According to some embodiments of the present application, the surface of the abutting member 600 that is used to contact the cylindrical battery 10 is arc-shaped.

[0144] As shown in FIG. 6A, the abutting member 600 can be provided on the inner wall of the first opening 421 of the body 400. Figure 8 and Figure 9 As shown in FIG. 6A, the surface of the abutting member 600 that is used to contact the cylindrical battery 10 is the first surface 610, which can be the side surface of the portion of the abutting member that is exposed outside the first opening 421, and the first surface 610 can abut against the side surface of the cylindrical battery.

[0145] It can be understood that, in some embodiments, the portion of the abutting member 600 that is located in the sub-groove 420 can have a side surface with a smooth transition or a prismatic side surface, and the portion of the abutting member 600 that is exposed outside the first opening 421 can be arc-shaped, i.e., the first surface is arc-shaped.

[0146] In other embodiments, the abutting member 600 can be cylindrical, so that the first surface is circular arc-shaped.

[0147] In this embodiment, the first surface is provided protruding from the surface of the accommodating portion, and the metal particles that fall on the surface of the abutting portion can move along the first surface 610 to the surface of the accommodating portion outside the abutting portion under the magnetic attraction of the magnetic attraction portion. The arc-shaped surface can make the metal particles more easily move to the surface of the accommodating portion outside the abutting portion, so as to reduce the metal particles adsorbed on the surface of the abutting portion and reduce the risk of scratching the cylindrical battery. In addition, since the first surface is arc-shaped, non-metallic particles are also not easy to accumulate on the first surface of the abutting portion, further reducing the risk of scratching the cylindrical battery by non-metallic particles and protecting the rust-proof plating layer of the cylindrical battery.

[0148] According to some embodiments of the present application, the hardness D1 of the abutting member 600 and the hardness D2 of the surface 411 of the accommodating portion satisfy D1 < D2.

[0149] Hardness refers to the ability of a material to resist local plastic deformation (such as indentation, scratching, wear, etc.), and is a key mechanical property index for measuring the degree of softness and hardness of a material.

[0150] In this embodiment, the abutting member 600 and the body 400 can be made of different materials, and the hardness of the two can be different. In addition, the hardness D1 of the abutting member 600 can be less than the hardness D2 of the surface 411 of the accommodating portion.

[0151] In some embodiments, the body 400 can be made of polyether ether ketone (PEEK), which can have sufficient hardness to ensure that the cylindrical battery clamp is not easily damaged during production. The abutting piece 600 can be made of super glue, also known as polyurethane (PU) elastomer, which is a material with good strength and small compression deformation. Super glue is a new type of material between plastic and rubber, which has the rigidity of plastic and the elasticity of rubber.

[0152] In other embodiments, the body and the abutting piece can also be made of other materials, such as metal, plastic, rubber, etc., which can be set according to actual conditions.

[0153] The hardness D1 of the abutting piece 600 is less than the hardness of the body 400, which can make the body 400 have a higher hardness and not be easily damaged, so as to not easily form scratches on the surface of the accommodating portion, thereby improving the phenomenon that the hard scratches on the surface of the accommodating portion scratch the cylindrical battery in turn.

[0154] At the same time, the hardness of the abutting piece 600 is small, which can reduce the friction with the cylindrical battery, and the hardness of the abutting piece is less than that of the body, which can be used as a vulnerable part and be replaced in time, thereby protecting the cylindrical battery and the body 400.

[0155] According to some embodiments of the present application, the hardness D1 of the abutting piece 600 satisfies A70≤D1≤A90.

[0156] It can be understood that the hardness of the abutting piece 600 can be A70, A75, A80, A85, A90, etc., or the D1 of the abutting piece can also satisfy A75≤D1≤A90, or A70≤D1≤A85, or A75≤D1≤A85, etc.

[0157] In order to reduce the cost of consumables and the time cost of replacing the abutting piece on the production line caused by the wear of the abutting piece, the inventors have verified abutting pieces with different hardnesses in batches, and the results show that the softer the abutting piece, the smaller the damage to the cylindrical battery, but the more serious the wear, and the shorter the service life. Ultimately, it is verified that the abutting piece with A70-A90 hardness has the best comprehensive performance. The abutting piece with a hardness higher than A90 has the risk of scratching the cylindrical battery, but its service life is greatly extended, and the abutting piece with a hardness lower than A70 has no risk of scratching the cylindrical battery, but its service life is shorter and it will be severely worn after producing about 15K cylindrical batteries.

[0158] By setting the hardness of the abutting piece to not more than A90, the shell of the cylindrical battery can be protected from being scratched. By setting the hardness of the abutting piece to not less than A70, the service life of the abutting piece can be greatly improved, and the cost of consumables is reduced.

[0159] It can be understood that the welding burr of the end cover will scratch the convex region of the abutting piece during the sliding of the cylindrical battery on the cylindrical battery clamp. Since the abutting piece is made of soft material, the surface scratches have no effect on the shell of the cylindrical battery, but the abutting piece will be damaged after being scratched by the shell. If the hardness is too soft, the wear life is too short, which will increase the consumption cost and the time cost of replacing the abutting piece on the production line. By setting the hardness between A70 and A90, the effect of not scratching the shell but low wear degree of the abutting piece itself is achieved.

[0160] Figure 10 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figure 9 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figure 11 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figure 9 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figure 12 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figure 9 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figure 13 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figure 10 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figure 14 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figure 9 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figure 15 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figure 9 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure. Figures 9 to 15 The structural schematic diagram of the cylindrical battery clamp provided for other embodiments of the present application is shown in the figure.

[0161] Please refer to Figure 13 According to some embodiments of the present application, the magnetic attraction part 500 comprises a plurality of magnetic attraction assemblies 510 arranged at intervals along the circumference of the cylindrical battery. The direction passing through the geometric center of the magnetic attraction assembly 510 and perpendicular to the axis of the cylindrical battery 10 is the second projection direction, and the magnetic attraction assembly has a second projection 512 on the surface of the accommodating part along the second projection direction; among the plurality of second projections 512 of the plurality of magnetic attraction assemblies, the abutting piece 600 is arranged between the two adjacent second projections 512, or the abutting piece 600 is arranged outside the outermost second projection 512.

[0162] In this embodiment, the magnetic attraction part 500 comprises a plurality of dispersed magnetic attraction assemblies 510, and the plurality of magnetic attraction assemblies 510 can be arranged at intervals along the circumference of the cylindrical battery.

[0163] It can be understood that the vertical distance of each magnetic attraction assembly from the accommodating part can be the same, so that the distance of each magnetic attraction assembly from the cylindrical battery is the same, so that the magnetic attraction force can be uniformly applied from multiple directions of the side surface of the cylindrical battery, so that the clamping of the cylindrical battery is more stable.

[0164] The second projection direction of the magnetic attraction assembly refers to the direction passing through the geometric center of each magnetic attraction assembly and perpendicular to the axis of the cylindrical battery 10. It can be understood that different magnetic attraction assemblies can have different second projection directions.

[0165] For example Figure 14 and Figure 15Three magnetic attraction assemblies 510 are shown, from left to right, the second projection direction of the first magnetic attraction assembly is the direction through its geometric center and perpendicular to the axis of the cylindrical battery, denoted as A3, similarly, the second projection direction of the second magnetic attraction assembly is denoted as A2, and the second projection direction of the third magnetic attraction assembly is denoted as A4. Figure 15 Three groups of second projections 512 of the three magnetic attraction assemblies 510 on the surface of the accommodating portion are shown in FIG.

[0166] As Figure 16 , the abutting pieces can be arranged between the two adjacent second projections, so that the abutting pieces can be arranged away from the magnetic attraction assemblies.

[0167] Figure 16 The structural schematic diagram of the cylindrical battery clamp provided for another embodiment of the present application is shown in FIG. Figure 16 In other embodiments, the abutting pieces can also be arranged outside the outermost second projection 512, for example, Figure 14 In the embodiment shown in FIG.

[0168] It can be understood that, in the embodiment shown in FIG. Figure 16 , when the diameters of the two abutting pieces embedded in the sub-grooves are different or the degrees of wear are different, the cylindrical battery will be decentered with the accommodating portion, the cylindrical battery will be offset to one end, and direct contact with the surface of the accommodating portion is easy to occur, which can cause scratches on the shell. In order to improve this problem, as shown in FIG. Figure 16 , two more abutting pieces can be added on both sides, that is, among the plurality of abutting pieces, part of them can be arranged between the two adjacent second projections, and part of them can be arranged outside the outermost second projection, so as to assist the positioning of the cylindrical battery, improve the risk that the cylindrical battery can contact the surface of the accommodating portion, and further improve the problem of scratches on the shell.

[0169] In addition, in the embodiment shown in FIG. Figure 15 , the number and size of the magnetic attraction assemblies can also be adjusted to increase the magnetic attraction force to prevent the cylindrical battery from falling off.

[0170] It can be understood that, since the magnetic attraction portion of the present embodiment includes a plurality of magnetic attraction assemblies, the first projection direction A1 of the magnetic attraction portion in the above-mentioned embodiments can refer to the second projection direction (A2 to A4) of each magnetic attraction assembly in the present embodiment, in addition, the first projection 511 of the magnetic attraction portion on the surface of the accommodating portion can include the second projections 512 of each magnetic attraction assembly on the surface of the accommodating portion, for example, Figures 10 to 15The three second projections 512 in the first projection 511 can constitute the first projection 511, and the first projection 511 and the abutting member are arranged to be spaced apart from each other, that is, each abutting member can be arranged to be spaced apart from each second projection, that is, there is no intersection or intersection between the two.

[0171] The embodiment can simultaneously apply magnetic attraction force to the cylindrical battery from various angles by arranging multiple magnetic attraction assemblies, thereby improving the stability of clamping the cylindrical battery. In addition, since the magnetic attraction assemblies are distributed along the circumference of the cylindrical battery, the magnetic attraction force of each magnetic attraction assembly on the cylindrical battery is more uniformly distributed, so that the spacing between the cylindrical battery and the surface of the accommodating portion is more uniform, thereby further reducing the risk of scratching the cylindrical battery.

[0172] In addition, the embodiment can make the abutting member away from the magnetic attraction assembly, and the magnetic attraction force at the position of the abutting portion is small, so that even if metal particles fall on the surface of the abutting portion, since the position is away from the magnetic attraction portion, the magnetic attraction force is small, and the metal particles are not easy to be adsorbed on the surface of the abutting portion, thereby reducing the metal particles on the surface of the abutting portion and reducing the risk of scratching the cylindrical battery. In addition, even if there are metal particles on the surface of the abutting portion, the magnetic attraction force will cause them to gather in the direction of the larger magnetic attraction force, that is, to move to the area of the second projection (the position with stronger magnetic attraction force on the surface of the accommodating portion) outside the abutting portion, so that the metal particles can move from the surface of the abutting portion to the surface of the accommodating portion, and then enter the spacing between the cylindrical battery and the surface of the accommodating portion, thereby reducing the accumulation of metal particles on the surface of the abutting portion.

[0173] In addition, compared with the abutting member arranged between the magnetic attraction portion and the cylindrical battery, the magnetic attraction force on the cylindrical battery is not weakened, and the fixing stability of the cylindrical battery is improved. In addition, since the contact position of the abutting member and the cylindrical battery is away from the magnetic attraction assembly, the magnetic attraction force on the cylindrical battery at this position is small, and the wear of the abutting member is relatively small, thereby protecting the abutting member to a certain extent and prolonging its service life.

[0174] In other embodiments, the multiple magnetic attraction assemblies 510 can also be distributed along other directions, for example, they are arranged to be spaced apart along the first direction, and the like, which can be arranged according to actual conditions.

[0175] According to some embodiments of the present application, continuing to refer to Figure 15 Each magnetic attraction assembly 510 includes a plurality of magnetic attraction members 520 arranged along a first direction X, wherein the first direction X is arranged parallel to the axis of the cylindrical battery 10.

[0176] In the embodiment, each magnetic assembly can further include a plurality of magnetic pieces 520, which can be arranged at intervals along the first direction X. It can be understood that the magnetic pieces can be evenly distributed along the first direction of the body, so that each position of the body along the first direction can be covered by the magnetic force, thereby improving the stability of the cylindrical battery fixation.

[0177] It can be understood that, as Figure 15 the second projection of each magnetic assembly can include the projection of the plurality of magnetic pieces 520. It can be understood that, in each magnetic assembly, each magnetic piece 520 can be projected in a direction passing through the geometric center thereof and perpendicular to the axis of the cylindrical battery, so as to form a respective sub-projection on the surface of the accommodating portion, and each sub-projection constitutes the second projection, Figure 17 One second projection 512 is shown in each dashed box, and each second projection 512 can include five sub-projections arranged along the first direction X, i.e., each magnetic assembly can include five magnetic pieces. The abutting piece can be arranged separately from the sub-projections, i.e., not intersecting or overlapping.

[0178] In the embodiment, by arranging a plurality of magnetic pieces, the magnetic force can be applied at multiple positions along the axis direction of the cylindrical battery, so that the cylindrical battery can be stably clamped. At the same time, the size of the magnetic force can also be adjusted by adjusting the number of magnetic pieces. Compared with a long strip-shaped magnet, the magnetic assembly provided in the embodiment can adjust the size of the magnetic force according to the requirement, and has good applicability.

[0179] According to some embodiments of the present application, the body 400 is provided with a plurality of mounting holes 430 on the outer side away from the accommodating portion 410, and the plurality of magnetic pieces 520 are respectively and one-to-one mounted in the plurality of mounting holes 430.

[0180] In the embodiment, a plurality of mounting holes 430 can be arranged on the outer side of the body away from the accommodating portion, each magnetic piece 520 can be mounted in a mounting hole, and the length of each mounting hole can be set according to the distance from the surface of the accommodating portion, so that the distance between the hole bottom of each mounting hole 430 and the surface of the accommodating portion can be the same, so that the magnetic piece 520 mounted to the hole bottom can be distributed along the circumference of the cylindrical battery, and the distance between the magnetic piece 520 and the cylindrical battery can remain the same.

[0181] In the embodiment, the shape of the mounting hole can be set according to the shape of the magnetic piece, for example, it can be a cylindrical hole or a square hole.

[0182] By arranging a plurality of mounting holes 430 on the outer side of the body away from the accommodating portion, the magnetic attraction force generated by the magnetic attraction members in the mounting holes can attract the cylindrical battery in the accommodating portion, and the magnetic attraction members can be arranged close to the cylindrical battery, thereby improving the magnetic attraction force on the cylindrical battery, and the cylindrical battery is more easily attracted by the magnetic attraction members.

[0183] Figure 13 For Figure 17 The structure diagram of the magnetic attraction member; please refer to Figure 17 According to some embodiments of the present application, the axis of the mounting hole 430 is perpendicular to the axis of the cylindrical battery 10, and the magnetic attraction member 520 includes a plurality of sub-magnetic attraction members 521 arranged along the axis of the mounting hole 430, and the plurality of sub-magnetic attraction members 521 are accommodated in the mounting hole 430.

[0184] In this embodiment, the axis of the mounting hole 430 can be perpendicular to the axis of the cylindrical battery, so that the magnetic attraction member 520 therein can face the side surface of the cylindrical battery. As Figures 4 to 7 In the embodiment, each magnetic attraction member can further include a plurality of sub-magnetic attraction members 521 arranged along the axis of the mounting hole. It can be understood that the number of sub-attractive parts in the magnetic attraction member can also be the same or different.

[0185] In this embodiment, since the magnetic attraction member includes a plurality of sub-magnetic attraction members, when attracting cylindrical batteries of different masses, the magnetic attraction force of the magnetic attraction member can be adjusted by increasing or decreasing the number of sub-magnetic attraction members in each magnetic attraction member, so as to adapt to different cylindrical batteries, and the applicability of the cylindrical battery clamp is better.

[0186] According to some embodiments of the present application, please refer to Figure 7 The cylindrical battery clamp further includes: a blocking member 700; the blocking member 700 is detachably connected to the end surface of the body 400 along the first direction X; one end of the sub-slot 420 along the first direction X has a second opening 422, and one end of the accommodating portion along the first direction X has a third opening 413 in communication with the second opening; the blocking member 700 covers at least part of the second opening 422, and the blocking member 700 is located outside the third opening 413; wherein the first direction is arranged parallel to the axis of the cylindrical battery.

[0187] In this embodiment, one blocking member 700 can be arranged on each end surface of the body 400 along the first direction X, and the blocking member can be connected to the body by a common detachable manner, such as screwing, clamping, etc. Figures 4 to 5 In the embodiment, the blocking member 700 can be fixed to the body 400 by a plurality of screws.

[0188] The blocking member 700 can be a sheet structure, which can be attached to the body 400, so as not to increase the volume of the cylindrical battery clamp.

[0189] Each of the two ends of the sub-groove 420 along the first direction has a second opening 422, which can be located on the end face of the body. It can be understood that the two ends of the first opening 421 of the sub-groove 420 along the first direction can be connected with the second opening 422 of the sub-groove, respectively.

[0190] Each of the two ends of the accommodating portion along the first direction X can have a third opening 413, which is provided on the end face of the body and can be in communication with the second opening 422.

[0191] The blocking piece can cover at least part of the second opening, that is, the blocking piece can cover the part of the abutting piece installed in the sub-groove 420, so as to block the movement of the abutting piece along the first direction, so that the abutting piece cannot be taken out of the sub-groove. In addition, the blocking piece can also be located outside the third opening 413, that is, the blocking piece does not protrude from the surface of the accommodating portion, so as not to hinder the relative movement of the cylindrical battery and the accommodating portion along the first direction.

[0192] It can be understood that the number of blocking pieces provided on each end face of the body can be 1, so as to cover all the second openings of the sub-grooves and block all the abutting pieces. Of course, the number of blocking pieces provided on each end face of the body can also be multiple, and each blocking piece can cover one or more second openings, so as to block one or more abutting pieces 600.

[0193] It can be understood that the abutting piece is easy to be scratched and damaged by the burr of the end cover of the cylindrical battery, and is a consumable part. When the first surface of the abutting piece is flush with the surface of the accommodating portion due to wear, the protection function of the abutting piece is lost, and the abutting piece needs to be replaced in time. At this time, the screw on the blocking piece can be unscrewed, the blocking piece can be removed, the abutting piece can be pulled out, a new abutting piece can be inserted into the sub-groove, and the blocking piece can be fixed on the two ends of the body by the screw. In the embodiment, the abutting piece can be quickly replaced by providing the blocking piece, the downtime maintenance time caused by replacing the abutting piece is reduced, and the production efficiency is improved.

[0194] According to some embodiments of the present application, the abutting piece 600 extends along the first direction X, and one end of the abutting piece 600 along the first direction X abuts against the blocking piece 700.

[0195] It can be understood that the size of the abutting piece 600 along the first direction can be the same as the size of the sub-groove along the first direction, so that the two ends of the abutting piece can abut against the two blocking pieces, respectively.

[0196] By providing that the abutting piece extends along the first direction, the two ends of the abutting piece can abut against the two blocking pieces, so that the abutting piece can be prevented from moving along the first direction relative to the body during the movement of the cylindrical battery clamp, and the reliability of the relative movement between the cylindrical battery and the abutting piece is improved.

[0197] According to some embodiments of the present application, as Figure 5 The surface 411 of the accommodating portion includes an intermediate section 414 and a guide section 415 connected to one end of the intermediate section 414 in the first direction X, and the guide section 415 is arranged obliquely relative to the intermediate section 414. In a cross section perpendicular to the first direction X, the size of the area enclosed by the cross section of the guide section 415 gradually increases from the end close to the intermediate section 414 to the end away from the intermediate section 414. The first direction X is parallel to the axis of the cylindrical battery 10.

[0198] It can be understood that the surface 411 of the accommodating portion can include an intermediate section 414 and two guide sections 415 located at both ends of the intermediate section 414. The intermediate section 414 can be a part of a cylindrical surface, and the guide section 415 can be arranged obliquely relative to the intermediate section, i.e., it can be a part of a circular truncated cone surface.

[0199] As Figure 7 The first direction can be the up-down direction in the figure. Taking the guide section 415 at the upper part of the intermediate section 414 as an example, the size of the area enclosed by the cross section of the guide section 415 (the area enclosed by a circular arc and a straight line connecting the two end points of the circular arc) can gradually decrease from the end close to the intermediate section to the end away from the intermediate section (from bottom to top), so that the guide section 415 can have an outwardly expanding structure.

[0200] In this embodiment, by arranging the oblique guide section, the opening at both ends of the accommodating portion in the first direction can be enlarged, so that the cylindrical battery can be more easily moved into the accommodating portion along the first direction, and the edge of the accommodating portion can be prevented from scratching the shell of the cylindrical battery.

[0201] According to some embodiments of the present application, as Figure 7 The surface 411 of the accommodating portion is provided with a slope surface 416 at each end in the circumferential direction of the cylindrical battery. The accommodating portion 410 has a fourth opening 417 located between the two slope surfaces 416. A second direction Y is perpendicular to the fourth opening 417 and points from the inside to the outside of the accommodating portion 410. The distance L2 between the two slope surfaces 416 gradually increases along the second direction Y.

[0202] In this embodiment, the surface of the accommodating portion can have a fourth opening 417 located between the two third openings 413. The fourth opening 417 can be a side opening of the accommodating portion. The surface of the accommodating portion can have one slope surface 416 at each end in the circumferential direction, and the two slope surfaces can be arranged oppositely.

[0203] As ​ Y shows the second direction, i.e., the direction from the inside to the outside of the accommodating portion and perpendicular to the fourth opening. It can be understood that the second direction Y is a vector direction, i.e., it is the same as the direction of the arrow, and the opposite direction of the arrow does not belong to the second direction.

[0204] The distance L2 between the two inclined surfaces 416 can gradually increase along the second direction Y, so that the fourth opening has an outwardly expanding structure.

[0205] In this embodiment, the fourth opening of the accommodating portion is expanded from inside to outside by the inclined surfaces, which can prevent the edge of the accommodating portion from scratching the shell of the cylindrical battery.

[0206] The cylindrical battery clamp of any one of the above embodiments can be used in the welding device.

[0207] The welding device can be used for welding cylindrical batteries, and the cylindrical battery clamp can assist the cylindrical battery 10 in transferring between various workstations.

[0208] It can be understood that the welding device provided by the present application uses any one of the above cylindrical battery clamps, and therefore has all the beneficial effects of the above cylindrical battery clamps, which will not be described again.

[0209] In one embodiment, the cylindrical battery clamp includes a body 400, a magnetic attraction portion 500, and a plurality of abutting members 600. The body 400 has an accommodating portion 410 for accommodating at least part of a cylindrical battery 10, the surface 411 of the accommodating portion is provided with a plurality of sub-grooves 420, and the sub-grooves 420 have first openings 421 on the surface 411 of the accommodating portion; each abutting member 600 is connected in one of the sub-grooves 420, and the abutting member 600 also passes through the first opening 421 and protrudes from the surface 411 of the accommodating portion; the magnetic attraction portion 500 is connected to the body 400, and the magnetic attraction portion 500 is used to generate a magnetic attraction force to fix the cylindrical battery 10 in the accommodating portion 410, and the abutting member 600 is used to abut against the side surface of the cylindrical battery 10 to isolate the cylindrical battery 10 from the surface 411 of the accommodating portion.

[0210] In this embodiment, the abutting member 600 has a cylindrical structure, and a plurality of abutting members can be arranged along the circumference of the cylindrical battery, so that the direction passing through the geometric center of the magnetic attraction portion 500 and perpendicular to the axis of the cylindrical battery 10 is the first projection direction A1, and the first projection 511 of the magnetic attraction portion 500 on the surface 411 of the accommodating portion is arranged separately from the abutting member 600 along the first projection direction A1.

[0211] The two ends of the body 400 are provided with blocking members 700 through screws, which can cover part of the abutting members 600, but do not protrude inwardly to the surface of the accommodating portion, thereby playing a role in blocking the abutting members 600, which will not follow the sliding and falling off during the sliding process of the cylindrical battery, and at the same time, the abutting members can be quickly disassembled and installed.

[0212] In addition, in some embodiments, a simple SOP (Standard Operating Procedure) file can also be formed on the production site, and the site staff can quickly perform the replacement of the abutting piece based on the SOP file, greatly saving the time cost of actual production.

[0213] In this embodiment, by digging a groove on the accommodating portion of the body and adding an abutting piece, the cylindrical surface of the cylindrical battery does not directly contact the surface of the accommodating portion. Specifically, the cylindrical surface of the cylindrical battery directly contacts the cylindrical surface of the abutting piece, not the surface of the accommodating portion, thereby significantly reducing the wear of the surface of the accommodating portion on the shell of the cylindrical battery.

[0214] In addition, due to the gap between the cylindrical battery and the surface of the accommodating portion, the metal particles that fall cannot stay in this area, avoiding the risk of scratching the shell of the cylindrical battery by the metal particles. Therefore, this embodiment not only optimizes the structure of the cylindrical battery clamp, but also effectively improves the wear and metal particle residue problem caused by the direct contact of the traditional clamp with the shell of the cylindrical battery, providing a more efficient and reliable solution for battery manufacturing.

[0215] In addition, the abutting piece 600 can be arranged away from the area with strong magnetic attraction, and the magnetic attraction at the abutting portion position is small. Even if the metal particles fall on the surface of the abutting portion, since they are located away from the magnetic attraction part, the magnetic attraction they receive is small, and the metal particles are not easy to be attracted to the surface of the abutting portion, thereby reducing the metal particles on the surface of the abutting portion and reducing the risk of scratching the cylindrical battery. In addition, even if there are metal particles on the surface of the abutting portion, since the abutting piece and the first projection 511 are separated from each other, the magnetic attraction received by the metal particles will cause them to move in the direction of strong magnetic attraction, i.e., to the first projection (the position with strong magnetic attraction on the surface of the accommodating portion) area outside the abutting portion, so that the metal particles can move from the surface of the abutting portion to the surface of the accommodating portion, and then enter the gap between the cylindrical battery and the surface of the accommodating portion, reducing the accumulation of metal particles on the surface of the abutting portion. When the cylindrical battery slides up and down on the cylindrical battery clamp, it only contacts the protruding area of the abutting piece, which can improve or even solve the problem of scratching the shell by metal particles.

[0216] In addition, the abutting piece and the magnetic attraction part are arranged staggered with each other. Compared with the abutting piece being arranged between the magnetic attraction part and the cylindrical battery, it will not weaken the magnetic attraction received by the cylindrical battery, improving the fixing firmness of the cylindrical battery. And since the contact position of the abutting piece with the cylindrical battery is away from the magnetic attraction part, the magnetic attraction received by the cylindrical battery at this position is small, and the wear of the abutting piece is relatively small, thereby protecting the abutting piece to some extent and improving its service life.

[0217] In the embodiment, the hardness of the abutting member can be less than the hardness of the surface of the accommodating portion, and the hardness of the abutting member is A70-A90. It can be understood that the welding burr of the end cover will scratch the raised area of the abutting member during the sliding of the cylindrical battery on the cylindrical battery clamp. Since the abutting member is soft, the surface scratch has no effect on the shell of the cylindrical battery, but the abutting member will be damaged after being scratched by the shell. If it is too soft, the wear life is too short, which will increase the consumption cost and the time cost of replacing the rubber stick on the production line. By setting the hardness between A70-A90, the effect of not scratching the shell but the wear degree of the abutting member is low.

[0218] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; 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 be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A cylindrical battery clamp, characterized in that, include: The body has a receiving portion for accommodating at least a portion of a cylindrical battery, the surface of the receiving portion being provided with at least one sub-groove, and the sub-groove having a first opening; At least one abutment member, the at least one abutment member passing through the first opening into the at least one sub-groove and protruding from the surface of the receiving portion, the abutment member being used to abut against the side surface of the cylindrical battery to isolate the side surface of the cylindrical battery from the surface of the receiving portion; A magnetic suction part is provided on the main body, which can generate a magnetic suction force acting on the side surface of the cylindrical battery so that the cylindrical battery is fixed in the receiving part. The surface of the abutment member that contacts the cylindrical battery is arc-shaped, with the direction passing through the geometric center of the magnetic attraction part and perpendicular to the axis of the cylindrical battery as the first projection direction. The first projection of the magnetic attraction part on the surface of the receiving part along the first projection direction is separated from the abutment member, thereby allowing the metal particles on the abutment member to move from the surface of the abutment member to the surface of the receiving part.

2. The cylindrical battery clamp according to claim 1, characterized in that, The surface of the receiving portion is provided with a plurality of sub-slots arranged at intervals along the circumference of the cylindrical battery; and each of the plurality of sub-slots is provided with at least one abutment member.

3. The cylindrical battery clamp according to claim 1, characterized in that, The sub-slot is disposed through the main body along a first direction; wherein, the first direction is disposed parallel to the axis of the cylindrical battery.

4. The cylindrical battery clamp according to any one of claims 1-3, characterized in that, The hardness D1 of the abutment and the hardness D2 of the surface of the receiving part satisfy the condition: D1 < D2.

5. The cylindrical battery clamp according to any one of claims 1-3, characterized in that, The hardness D1 of the abutment part satisfies: A70≤D1≤A90.

6. The cylindrical battery clamp according to any one of claims 1-3, characterized in that, The magnetic attraction section includes a plurality of magnetic attraction components arranged at intervals along the circumference of the cylindrical battery. With the direction passing through the geometric center of the magnetic attraction assembly and perpendicular to the axis of the cylindrical battery as the second projection direction, the magnetic attraction assembly has a second projection on the surface of the receiving part along the second projection direction; In the plurality of second projections of the plurality of magnetic assemblies, the abutment is disposed between two adjacent second projections, or the abutment is disposed outside the outermost second projection.

7. The cylindrical battery clamp according to claim 6, characterized in that, Each of the magnetic assemblies includes a plurality of magnetic elements arranged along a first direction, wherein the first direction is parallel to the axis of the cylindrical battery.

8. The cylindrical battery clamp according to claim 7, characterized in that, The main body has multiple mounting holes on the outer side away from the receiving part, and the multiple magnetic components are respectively installed in the multiple mounting holes one by one.

9. The cylindrical battery clamp according to claim 8, characterized in that, The axis of the mounting hole is perpendicular to the axis of the cylindrical battery. The magnetic attractor includes a plurality of sub-magnetic attractors arranged along the axis of the mounting hole, and the plurality of sub-magnetic attractors are all accommodated in the mounting hole.

10. The cylindrical battery clamp according to claim 2 or 3, characterized in that, Also includes: blocking components; The blocking member is detachably connected to the end face of the body along the first direction; The sub-slot has a second opening at one end along the first direction, and the receiving portion has a third opening at one end along the first direction that communicates with the second opening; the blocking member covers at least a portion of the second opening, and the blocking member is located outside the third opening; The first direction is parallel to the axis of the cylindrical battery.

11. The cylindrical battery clamp according to claim 10, characterized in that, The abutment extends along the first direction, and one end of the abutment along the first direction abuts against the blocking member.

12. The cylindrical battery clamp according to any one of claims 1-3, characterized in that, The surface of the receiving portion includes an intermediate section and a guide section connected to one end of the intermediate section along a first direction, the guide section being inclined relative to the intermediate section; With a plane perpendicular to the first direction as the cross-section, the size of the area enclosed by the cross-section of the guide segment gradually increases from the end near the middle segment to the end away from the middle segment; The first direction is parallel to the axis of the cylindrical battery.

13. The cylindrical battery clamp according to any one of claims 1-3, characterized in that, The surface of the receiving part is provided with sloping surfaces at both ends of the circumference of the cylindrical battery. The receiving part has a fourth opening located between the two sloping surfaces. The direction perpendicular to the fourth opening and along the receiving part from the inside to the outside is the second direction. The distance between the two sloping surfaces gradually increases along the second direction.

14. A welding device, characterized in that, The cylindrical battery clamp includes any one of claims 1-13.

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