Cylindrical battery clamp and welding equipment

Abstract

The invention 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 piece, the body is provided with a containing part used 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 is provided with a first opening; the at least one abutting piece is arranged in the at least one sub-groove in a penetrating manner through the first opening and protrudes out of the surface of the accommodating part, and the abutting piece is used for abutting against the side surface of the cylindrical battery so as to isolate the side surface of the cylindrical battery from the surface of the accommodating part; the magnetic attraction part is arranged on the body and can generate magnetic attraction force acting on the side surface of the cylindrical battery, so that the cylindrical battery is fixed in the accommodating part. The abutting piece can isolate the cylindrical battery from the containing part, metal particles adsorbed on the surface of the containing part are not prone to making contact with the cylindrical battery, and the problem that a shell of the cylindrical battery is prone to being scratched can be solved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a cylindrical battery fixture and welding equipment. Background Art

[0002] During the battery production process, it is usually necessary to use a fixture to clamp the battery casing and move the fixture to transfer the battery between various production stations.

[0003] However, the clamps in the related art are prone to scratching the battery casing when moving the battery, thereby damaging the anti-rust coating of the casing and affecting the service life of the battery. Therefore, how to effectively prevent the battery casing from being scratched becomes a problem that needs to be solved. Summary of the Invention

[0004] One purpose of the present application is to provide a cylindrical battery clamp and welding equipment to improve the problem in the related art that the clamp easily scratches the battery casing.

[0005] An embodiment of the first aspect of the present application provides a cylindrical battery clamp, comprising: a main body, a magnetic portion and at least one abutment member; the main body has a receiving portion for receiving at least part of the cylindrical battery, the surface of the receiving portion is provided with at least one sub-groove, and the sub-groove has a first opening; at least one abutment member is passed through the at least one sub-groove through the first opening and protrudes from the surface of the receiving portion, the abutment member 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 receiving portion; the magnetic portion is provided on the main body, and the magnetic portion can generate a magnetic force acting on the side surface of the cylindrical battery so that the cylindrical battery is fixed in the receiving portion.

[0006] In this embodiment, a sub-groove is provided in the accommodating portion, and an abutment member is provided in the sub-groove, and the abutment member protrudes from the surface of the accommodating portion. Since the abutment member 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, thereby protecting the anti-rust coating of the cylindrical battery. In addition, the contact area between the shell of the cylindrical battery and the surface of the accommodating portion can be reduced, thereby reducing the wear on the shell. In addition, when the cylindrical battery is in the ejection process, that is, when it moves relative to the cylindrical battery fixture along the axis of the cylindrical battery, due to the isolation of the cylindrical battery 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 that it is not easy to be scratched and drop metal particles, thereby reducing the formation of metal particles and reducing the risk of scratching the shell and the anti-rust coating. At the same time, burrs or flashes are less likely to scratch the surface of the receiving portion, thereby reducing hard scratches on the surface of the receiving portion and reducing the risk of the shell and anti-rust coating being scratched by hard scratches on the surface of the receiving portion. The sub-groove can also provide space for the installation of the abutment, which is conducive to the installation of the abutment.

[0007] In some embodiments, a surface of the receiving 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 this embodiment, by providing multiple sub-grooves, there is no contact between the cylindrical battery and the surface of the accommodating portion, that is, there is no hard contact between the shell of the cylindrical battery and the surface of the accommodating portion, which further improves the phenomenon that the shell is easily scratched.

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

[0010] By providing a sub-groove running through the body in the first direction, the abutment member can be easily moved relative to the sub-groove in the first direction, thereby installing or removing the abutment member. It is understood that the abutment member may be a wearing part that needs to be replaced regularly. By providing a through sub-groove, replacement is facilitated, thereby improving efficiency.

[0011] In some embodiments, the abutting member has a curved surface for contacting the cylindrical battery.

[0012] In this embodiment, metal particles that fall onto the surface of the abutment portion can be moved along the surface of the abutment member toward the surface of the receiving portion outside the abutment portion under the magnetic attraction of the magnetic attraction portion. The curved surface of the abutment member makes it easier for metal particles to move toward the surface of the receiving portion outside the abutment portion, thereby reducing the amount of metal particles adsorbed on the abutment portion surface and reducing the risk of scratches on the cylindrical battery. In addition, non-metallic particles are less likely to accumulate on this curved surface, further reducing the risk of cylindrical batteries being scratched by non-metallic particles and protecting the anti-rust coating of the cylindrical battery.

[0013] In some embodiments, the hardness D1 of the abutting member and the hardness D2 of the surface of the receiving portion satisfy: D1 < D2.

[0014] The hardness D1 of the abutment is less than that of the body, making it harder to damage and less susceptible to scratches on the surface of the housing. This can also mitigate the problem of hard scratches on the surface of the housing scratching the cylindrical battery. Furthermore, the abutment's lower hardness reduces friction with the cylindrical battery. Furthermore, since the abutment's lower hardness than the body allows it to be treated as a consumable part and replaced promptly, thus protecting both the cylindrical battery and the body.

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

[0016] By setting the hardness of the abutment to no more than A90, the cylindrical battery shell can be protected from scratches. By setting the hardness of the abutment to no less than A70, the service life of the abutment can be greatly increased, reducing the cost of consumables.

[0017] In some embodiments, a direction passing through the geometric center of the magnetic portion and perpendicular to the axis of the cylindrical battery is taken as the first projection direction, and a first projection of the magnetic portion on the surface of the accommodating portion along the first projection direction is spaced apart from the abutment member.

[0018] In this embodiment, because the abutment member is separated from the first projection, the abutment member can be positioned away from the magnetic attraction portion. The attraction force at the abutment portion is relatively small. Even if metal particles fall onto the surface of the abutment portion, the metal particles are less likely to be attracted to the abutment portion due to their location away from the magnetic attraction portion. This reduces the amount of metal particles on the abutment portion, thereby reducing the risk of scratches on the cylindrical battery. Furthermore, even if metal particles are present on the abutment portion, the separation of the abutment member from the first projection causes the magnetic attraction to cause them to gather in the direction of greater magnetic attraction, i.e., toward the area of ​​the first projection outside the abutment portion (the location on the surface of the receiving portion where the magnetic attraction is relatively strong). This allows the metal particles to move from the abutment portion surface to the receiving portion surface, and then into the gap between the cylindrical battery and the receiving portion surface, reducing the accumulation of metal particles on the abutment portion surface. Furthermore, the staggered arrangement of the abutment member and the magnetic attraction portion does not weaken the magnetic attraction to the cylindrical battery compared to a situation where the abutment member is positioned between the magnetic attraction portion and the cylindrical battery, thereby improving the secure fixation of the cylindrical battery. Moreover, since the contact position between the abutment and the cylindrical battery is far away from the magnetic attraction portion, the magnetic attraction force on the cylindrical battery at this position is relatively small, and the wear on the abutment is relatively small, which can protect the abutment to a certain extent and increase its service life.

[0019] In some embodiments, the magnetic portion includes a plurality of magnetic components arranged at intervals along the circumference of the cylindrical battery; the direction passing through the geometric center of the magnetic component and perpendicular to the axis of the cylindrical battery is the second projection direction, and the magnetic component has a second projection on the surface of the accommodating portion along the second projection direction; in the multiple second projections of the multiple magnetic components, the abutment is arranged between two adjacent second projections, or the abutment is arranged outside the outermost second projection.

[0020] This embodiment, by providing multiple magnetic components, can apply magnetic attraction to the cylindrical battery from all angles at the same time, thereby improving the stability of the cylindrical battery's clamping. And because the magnetic components are distributed along the circumference of the cylindrical battery, the magnetic attraction of each magnetic component on the cylindrical battery is more evenly distributed, making the spacing between the cylindrical battery and the surface of the accommodating portion more uniform, further reducing the risk of the cylindrical battery being scratched. In addition, the abutment can be kept away from the magnetic component, and the magnetic attraction at the abutment position is relatively small. Even if metal particles fall on the surface of the abutment, since they are located away from the magnetic component and the magnetic attraction is relatively small, the metal particles are not easily adsorbed on the surface of the abutment, thereby reducing the metal particles on the surface of the abutment and reducing the risk of the cylindrical battery being scratched. In addition, even if there are metal particles on the surface of the abutment portion, the magnetic attraction they receive will cause them to gather in the direction of greater magnetic attraction, that is, to move toward the second projection of the outside of the abutment portion (the position on the surface of the accommodating portion where the magnetic attraction is stronger), thereby allowing the metal particles to move from the surface of the abutment 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 abutment portion. In addition, compared to the abutment member being arranged between the magnetic attraction portion and the cylindrical battery, it does not weaken the magnetic attraction received by the cylindrical battery, thereby improving the fixing stability of the cylindrical battery. Moreover, since the contact position between the abutment member and the cylindrical battery is far away from the magnetic attraction component, the magnetic attraction received by the cylindrical battery at this position is smaller, and the wear on the abutment member is also relatively smaller, thereby protecting the abutment member to a certain extent and improving its service life.

[0021] In some embodiments, each magnetic assembly includes a plurality of magnetic members arranged along a first direction, wherein the first direction is parallel to the axis of the cylindrical battery.

[0022] In this embodiment, multiple magnetic elements are provided to apply magnetic attraction at multiple locations along the axis of the cylindrical battery, allowing the cylindrical battery to be stably clamped. Furthermore, the magnetic attraction force can be adjusted by adjusting the number of magnetic elements. Compared to long strip magnets, the magnetic attraction assembly provided in this embodiment can adjust the magnetic attraction force as needed, providing better applicability.

[0023] In some embodiments, a plurality of mounting holes are provided on the outer side of the main body away from the accommodating portion, and the plurality of magnetic members are respectively installed in the plurality of mounting holes in a one-to-one correspondence.

[0024] By arranging multiple mounting holes on the outside of the main body away from the accommodating portion, the magnetic attraction force generated by the magnetic attraction parts in the mounting holes can adsorb the cylindrical battery in the accommodating portion. The magnetic attraction parts can be arranged not limited to the shape of the main body, and the magnetic attraction parts can be arranged close to the cylindrical battery, thereby increasing the magnetic attraction force on the cylindrical battery and making it easier for the magnetic attraction parts to adsorb the cylindrical battery.

[0025] In some embodiments, the axis of the mounting hole is perpendicular to the axis of the cylindrical battery, the magnetic element includes a plurality of sub-magnetic elements arranged along the axis of the mounting hole, and the plurality of sub-magnetic elements are all accommodated in the mounting hole.

[0026] In this embodiment, the magnetic attraction force of the magnetic element can be adjusted by adjusting the number of sub-magnetic elements, and the embodiment has good applicability.

[0027] In some embodiments, the cylindrical battery fixture further includes: a blocking member; the blocking member is detachably connected to the end face of the body along the first direction; the sub-groove has a second opening at one end along the first direction, and the accommodating portion has a third opening connected to the second opening at one end along the first direction; the blocking member covers at least a portion of the second opening, and the blocking member is located outside the third opening; wherein the first direction is arranged parallel to the axis of the cylindrical battery.

[0028] In this embodiment, by providing a blocking member, the abutting member can be quickly replaced, thereby reducing downtime for maintenance caused by replacing the abutting member and improving production efficiency.

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

[0030] By arranging the abutting member to abut against the two blocking members, the abutting member can be prevented from moving relative to the body along the first direction, thereby improving the reliability of the relative movement between the cylindrical battery and the abutting member.

[0031] In some embodiments, the surface of the accommodating portion includes a middle section and a guide section connected to one end of the middle section along a first direction, and the guide section is arranged obliquely relative to the middle section; with a plane perpendicular to the first direction as a cross section, the size of the area enclosed by the cross section of the guide section gradually increases from one end close to the middle section to the end away from the middle section; wherein the first direction is arranged parallel to the axis of the cylindrical battery.

[0032] In this embodiment, by providing an inclined guide section, the size of the openings at both ends of the accommodating portion along the first direction can be expanded, making it easier for the cylindrical battery to move into the accommodating portion along the first direction, and preventing the edge of the accommodating portion from scratching the outer shell of the cylindrical battery.

[0033] In some embodiments, the surface of the accommodating portion is respectively provided with sloped surfaces at both ends along the circumference of the cylindrical battery, and the accommodating portion has a fourth opening located between the two sloped surfaces. The direction perpendicular to the fourth opening and along the accommodating portion from the inside to the outside is the second direction, and the distance between the two sloped surfaces gradually increases along the second direction.

[0034] In this embodiment, by providing the sloped surface, the fourth opening of the accommodating portion can be expanded from the inside to the outside, thereby preventing the edge of the accommodating portion from scratching the outer shell of the cylindrical battery.

[0035] An embodiment of the second aspect of the present application provides a welding device, comprising any of the cylindrical battery clamps described above.

[0036] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0038] Figure 1 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application; Figure 2 A schematic diagram of the structure of a cylindrical battery provided in some embodiments of the present application; Figure 3 A schematic structural diagram of a cylindrical battery fixture provided in some embodiments of the present application; Figure 4 A schematic structural diagram of a cylindrical battery fixture provided in some other embodiments of the present application; Figure 5 for Figure 4 Schematic diagram of the decomposition structure; Figure 6 for Figure 4 Schematic diagram of the connection between the cylindrical battery fixture and the cylindrical battery; Figure 7 for Figure 4 A top view of Figure 8 for Figure 4 Front view of Figure 9 A schematic structural diagram of a cylindrical battery fixture provided in some other embodiments of the present application; Figure 10 for Figure 9 Schematic diagram of the structure from another angle; Figure 11 for Figure 9 Dorsal view of; Figure 12 for Figure 9 Side view of Figure 13 for Figure 10 Schematic diagram of the decomposition structure; Figure 14 for Figure 9A top view of Figure 15 for Figure 9 Front view of Figure 16 A schematic structural diagram of a cylindrical battery fixture provided in some embodiments of the present application; Figure 17 for Figure 13 Schematic diagram of the structure of the magnetic component.

[0039] Description of reference numerals: Battery device 100; Cylindrical battery 10, end cover 12, housing 13; Main body 400, accommodating portion 410, accommodating portion surface 411, spacer 412, third opening 413, middle section 414, guide section 415, sloped surface 416, fourth opening 417, sub-slot 420, first opening 421, second opening 422, mounting hole 430; Magnetic portion 500, magnetic assembly 510, first projection 511, second projection 512, magnetic member 520, sub-magnetic member 521; Abutment member 600, first surface 610; blocking member 700; Box body 20, first part 21, second part 22. DETAILED DESCRIPTION

[0040] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0042] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0043] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, a and / or b can represent: a exists alone, a and b exist simultaneously, and b exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0045] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0046] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0047] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0048] Currently, market developments indicate that rechargeable batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in various electronic devices, including electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As the application areas of rechargeable batteries continue to expand, market demand is also growing.

[0049] Cylindrical batteries typically include an outer casing and an electrode assembly disposed within it. During the battery production process, particularly during the welding process for the top cover of the cylindrical battery casing, a fixture is typically used to clamp the cylindrical battery ejected from the cup and then transferred to the welding station. The fixture typically contains magnets that attract the cylindrical battery's steel casing, allowing it to adhere to the fixture's surface and secure it.

[0050] However, after the top cover welding is completed, when the cylindrical battery is ejected and moves up and down relative to the fixture, its welding burrs or incoming material burrs will be scraped and fallen off during the contact process with the fixture to form metal particles. The metal particles will be attracted by the magnet of the fixture and fall on the contact surface between the fixture and the cylindrical battery, which will easily leave scratches on the outer shell of the cylindrical battery and damage the surface anti-rust coating. In the subsequent process, rust is likely to appear at the scratches.

[0051] In addition, in addition to scraping and dropping metal particles, welding burrs will also form hard scratches on the surface of the fixture, which in turn will scratch the surface of the cylindrical battery and leave scratches on the outer casing.

[0052] In addition, in addition to the metal particles generated by the above reasons, the processing workshop itself also produces some metal particles, which are also easily adsorbed by the fixture, thereby scratching the outer shell of the cylindrical battery.

[0053] To address at least one of the above-mentioned problems, an embodiment of the present application provides a cylindrical battery fixture, comprising: a body, a magnetic portion, and at least one abutment member, wherein the body has a receiving portion for receiving at least a portion of the cylindrical battery, the receiving portion having at least one sub-groove provided on its surface, and the sub-groove having a first opening; at least one abutment member is disposed in the at least one sub-groove through the first opening and protrudes from the surface of the receiving portion, the abutment member being configured 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; the magnetic portion is disposed on the body, and the magnetic portion is capable of generating a magnetic attraction force acting on the side surface of the cylindrical battery to secure the cylindrical battery within the receiving portion. The cylindrical battery fixture provided in an embodiment of the present application, when attracting a cylindrical battery, is isolated from the surface of the receiving portion, and metal particles attracted to the surface of the receiving portion can be located in the gap between the two, making it difficult for metal particles to contact the side surface of the cylindrical battery. Therefore, the side surface of the cylindrical battery is less likely to be scratched by the metal particles, thereby protecting the battery's anti-rust coating.

[0054] The technical solution described in the embodiments of this application is suitable for clamping cylindrical batteries, so that cylindrical batteries can be transferred between various workstations. It is understood that the cylindrical battery clamp provided in the embodiments of this application can be used in welding equipment used in the welding process of cylindrical batteries, and of course can also be used in other production, manufacturing and assembly processes of cylindrical batteries, which is not limited in the embodiments of this application.

[0055] The cylindrical batteries described in the embodiments of the present application can be used in battery devices. Energy storage devices that utilize battery devices as power sources include one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices connected in series via a busbar to increase the voltage of the energy storage device. When an energy storage device includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0056] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output electrical energy at appropriate times. For example, energy storage devices can store electrical energy during low-consumption periods and provide electrical energy to relevant users or electrical devices during peak periods. The energy storage system provided in the embodiments of the present application can be any power system that requires an energy storage device. As an example, the energy storage device is an energy storage container or an energy storage cabinet.

[0057] In the embodiments of the present application, the electrical devices using the battery device as a power source may include, but are not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery-powered vehicles, electric cars, ships, spacecraft, etc. Among them, the electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and the spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0058] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the energy storage devices and electrical devices described above, but can also be applied to all battery devices including a box and electrical devices using the battery devices.

[0059] Please refer to Figure 1 , Figure 1 Schematic diagram of the exploded structure of the battery device provided in some embodiments of the present application.

[0060] The battery apparatus 100 (Battery Apparatus) mentioned in the embodiments of the present application may include one or more cylindrical battery assemblies for providing voltage and capacity. The cylindrical battery assembly (Battery Cell Assembly) may include multiple cylindrical batteries 10, which are connected in series, parallel, or hybrid via a busbar.

[0061] In some embodiments, a cylindrical battery cell assembly is generally formed by arranging a plurality of cylindrical batteries 10 .

[0062] As an example, the cylindrical battery assembly may be a battery module, which is formed by arranging and fixing multiple cylindrical batteries 10 to form an independent module. As an example, the battery module may be formed by bundling multiple cylindrical batteries 10 with a cable tie.

[0063] In some embodiments, as Figure 1 As shown, the battery device 100 may be a battery pack, which includes a housing 20 and one or more cylindrical battery assemblies housed within the housing 20. The housing 20 may be a simple three-dimensional structure such as a single rectangular parallelepiped, cylinder, or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as rectangular parallelepipeds, cylinders, or spheres. The housing 20 may be made of alloy materials such as aluminum alloys and iron alloys, polymer materials such as polycarbonate and polyisocyanurate foam, or composite materials such as glass fiber and epoxy resin.

[0064] As an example, the cylindrical battery assembly may be a battery module, and the cylindrical battery assembly may be housed in the box body 20 by fixing the battery module in the box body 20 .

[0065] As an example, the cylindrical battery assembly may also be housed in the case 20 by directly fixing a plurality of cylindrical batteries 10 to the case 20 .

[0066] As an example, the housing 20 may include a first portion 21 and a second portion 22. The first portion 21 and the second portion 22 engage to form an enclosed space within the housing 20 for accommodating the cylindrical battery assembly. Enclosed herein refers to covering or closing, and can be either unsealed or sealed to prevent liquids or other foreign matter from affecting the charging or discharging of the cylindrical battery 10. The first portion 21 may be a top cover or a bottom plate.

[0067] As an example, the box body 20 may 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 a closed space is formed inside the box body 20 to accommodate the cylindrical battery assembly.

[0068] In some embodiments, the box 20 can be used as a part of the chassis structure of the vehicle. For example, part of the box 20 can become at least a part of the floor of the vehicle, or part of the box 20 can become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0069] The cylindrical battery 10 provided in the embodiment of the present application may be a secondary battery. A secondary battery refers to a cylindrical battery 10 that can be continuously used by activating the active material by charging after the cylindrical battery 10 is discharged.

[0070] 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 metal hydride battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0071] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a cylindrical battery provided in some embodiments of the present application. The cylindrical battery 10 is the smallest unit that makes up the battery. Figure 2 The cylindrical battery 10 includes a housing, an electrode assembly, and other functional components. The housing may include a shell 13 and an end cap 12 connected to the shell 13.

[0072] The end cap 12 is a component that fits over the opening of the housing 13 to isolate the internal environment of the cylindrical battery 10 from the external environment. The shape of the end cap 12 can be adapted to the shape of the housing 13 to fit the housing 13. In some embodiments, the end cap 12 can be made of a material with a certain degree of hardness and strength (such as an aluminum alloy). This prevents deformation during compression and collision, providing the cylindrical battery 10 with greater structural strength and improved safety. The end cap 12 can be provided with functional components such as electrode terminals. Electrode terminals can be used to electrically connect to the electrode assembly for inputting or outputting electrical energy into the cylindrical battery 10. In some embodiments, the end cap 12 can also be provided with a pressure relief mechanism to release internal pressure when the internal pressure or temperature of the cylindrical battery 10 reaches a threshold. The end cap 12 can also be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, and plastic. In some embodiments, an insulating member may be provided inside the end cap 12 to isolate the electrical connection components in the housing 13 from the end cap 12 to reduce the risk of short circuit.

[0073] The shell 13 is a component used to cooperate with the end cap 12 to form the internal environment of the cylindrical battery 10, wherein the formed internal environment can be used to accommodate the electrode assembly, electrolyte and other components. The shell 13 and the end cap 12 can be independent components. An opening can be set on the shell 13, and the internal environment of the cylindrical battery 10 is formed by covering the opening with the end cap 12. Without limitation, the end cap 12 and the shell 13 can also be integrated. Specifically, the end cap 12 and the shell 13 can form a common connection surface before other components are put into the shell. When the interior of the shell 13 needs to be encapsulated, the end cap 12 is covered with the shell 13. The shell 13 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 13 can be determined according to the specific shape and size of the electrode assembly. The material of the shell 13 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0074] The electrode assembly is the component in the cylindrical battery 10 where the electrochemical reaction occurs. The housing 13 may contain one or more electrode assemblies. The electrode assembly is primarily formed by winding a positive electrode sheet and a negative electrode sheet, typically with a separator between the positive and negative electrodes. The portions of the positive and negative electrodes containing the active material constitute the main body of the electrode assembly.

[0075] For ease of explanation, the following description will be made using a cylindrical battery as an example. In other embodiments, the cylindrical battery may also be in other shapes, such as a rectangle, etc., without specific limitation.

[0076] Figure 3A schematic structural diagram of a cylindrical battery fixture provided in some embodiments of the present application; Figure 4 A schematic structural diagram of a cylindrical battery fixture provided in some other embodiments of the present application; Figure 5 for Figure 4 Schematic diagram of the decomposition structure; Figure 6 for Figure 4 Schematic diagram of the connection between the cylindrical battery fixture and the cylindrical battery; Figure 7 for Figure 4 A top view of Figure 8 for Figure 4 Please refer to the front view of Figures 3 to 8 The embodiment of the present application provides a cylindrical battery fixture, comprising: a body 400, a magnetic portion 500, and at least one abutting member 600. The body 400 has a receiving portion 410 for receiving at least part of the cylindrical battery 10, and the surface 411 of the receiving portion is provided with at least one sub-groove 420, and the sub-groove 420 has a first opening 421; at least one abutting member 600 is provided in the at least one sub-groove 420 through the first opening and protrudes from the surface 411 of the receiving portion, and the abutting 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 portion; the magnetic portion 500 is provided on the body 400, and the magnetic portion 500 can generate a magnetic attraction force acting on the side surface of the cylindrical battery, so that the cylindrical battery 10 is fixed in the receiving portion 410.

[0077] The cylindrical battery clamp can be used to clamp the cylindrical battery 10 , and the cylindrical battery clamp can include a body 400 , a magnetic attraction portion 500 , and abutment 600 .

[0078] The body 400 can be made of plastic, rubber or other materials, and can be formed with a receiving portion 410. The receiving portion 410 can be provided on one side of the body 400, for example, it can be a receiving groove. The receiving portion 410 can be used to receive at least part 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 in the figure can have a central angle of different ranges. For example, it can be less than or equal to 180°, so that the main body 400 can approach the cylindrical battery from the outside of the side surface of the cylindrical battery along the radius of the cylindrical battery. Alternatively, the main body 400 can also move relatively from one end of the cylindrical battery toward the cylindrical battery along the axis of the cylindrical battery, so as to accommodate at least part of the cylindrical battery in the accommodation portion. Of course, the central angle of the arc-shaped groove can also be greater than 180° and less than or equal to 360°. At this time, the main body 400 can move relative to the cylindrical battery from one end of the cylindrical battery along its axis, so as to accommodate at least part of the cylindrical battery in the accommodation portion.

[0079] When the receiving portion receives the cylindrical battery, the surface 411 of the receiving portion may face the side surface of the cylindrical battery 10 , that is, the cylindrical surface of the cylindrical battery.

[0080] It is understood that the sub-groove 420 is provided in the accommodating portion and can be formed by being recessed in the surface 411 of the accommodating portion, and a first opening 421 can be formed on the surface 411 of the accommodating portion. The accommodating space of the sub-groove 420 and the accommodating space of the accommodating portion can be communicated through the first opening 421. The number of sub-grooves 420 can be one or more, for example, two, three, four, etc.

[0081] It can be understood that the number of abutment members 600 can be the same as the number of sub-grooves 420, each abutment member 600 can be connected in a sub-groove, and each abutment member in at least one abutment member can be passed through a first opening in a sub-groove of at least one sub-groove. In other embodiments, multiple abutment members can be passed through each sub-groove, and multiple abutment members can pass through a sub-groove through the first opening.

[0082] In this embodiment, the abutting member 600 can be connected to the sub-groove by snapping or interference fitting. It is understood that the abutting member 600 can be partially accommodated in the sub-groove, and another portion can be penetrated by the first opening 421, so that the portion of the abutting member 600 can be protruded from the surface 411 of the receiving portion.

[0083] The abutment member 600 can isolate the cylindrical battery 10 from the surface 411 of the receiving portion. Specifically, the abutment member 600 can protrude from the surface 411 of the receiving portion. When the cylindrical battery 10 is clamped in the receiving portion, the abutment member 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 receiving portion. When a single abutment member is provided, the abutment member 600 can have a surface that mates with the side surface of the cylindrical battery, thereby isolating the cylindrical battery from the receiving portion.

[0084] In some embodiments, as Figure 7 The dimension L1 of the abutment member protruding from the surface of the receiving 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 dimension of the abutment member protruding from the surface of the receiving portion is related to the magnetic attraction of the magnetic attraction portion and can be set according to the magnetic attraction.

[0085] The magnetic portion 500 can be connected to the body 400. For example, the body 400 can be provided with a hole or other structure, in which the magnetic portion 500 can be accommodated, thereby being embedded in the body 400. Alternatively, the magnetic portion 500 can be connected to the side surface of the body 400. It is understood that the magnetic portion 500 can be connected to the body 400 through common connection methods, such as clamping, screwing, riveting, bonding, etc.

[0086] The magnetic attraction portion 500 can be a component capable of generating magnetic attraction, such as a permanent magnet capable of generating magnetism. It is understood that the cylindrical battery housing is typically made of a material such as steel or iron that can be attracted by a magnet. The magnetic attraction portion can maintain relative fixation between the cylindrical battery and the battery body by attracting the cylindrical battery housing, thereby securing the cylindrical battery within the housing.

[0087] It is understood that the magnetic attraction portion 500 can be set on the side of the body away from the accommodating portion 410, so as to generate a magnetic attraction force acting on the side surface of the cylindrical battery 10, thereby attracting the cylindrical battery 10 into the accommodating portion 410.

[0088] The magnetic attraction force acting on the side surface of the cylindrical battery may mean that the magnetic attraction portion is arranged corresponding to the side surface of the cylindrical battery, and the perpendicular line between the magnetic attraction portion and the axis of the cylindrical battery passes through the side surface of the cylindrical battery, that is, the magnetic attraction force acting on the side surface of the cylindrical battery is greater.

[0089] In one embodiment, the magnetic attraction portion can be a neodymium magnet, which can be inherently magnetic, with strong magnetic attraction and high reliability. The magnetic attraction portion in this embodiment can have its own continuous magnetism, without the need for external energy, thereby simplifying the structure of the cylindrical battery clamp and improving the reliability of the clamping.

[0090] When it is necessary to transfer a cylindrical battery, for example, when transferring a cylindrical battery with welded end caps to another workstation, the cylindrical battery can be ejected from the cup along its axial direction using a lifting mechanism. The cylindrical battery fixture can be located at the top of the cup so that the ejected cylindrical battery can be exactly accommodated in the receiving portion 410 of the main body. The magnetic attraction force generated by the magnetic attraction portion 500 keeps the cylindrical battery 10 relatively fixed to the main body, and the cylindrical battery 10 is clamped by the cylindrical battery fixture. The side surface of the cylindrical battery 10 will rest against the abutment 600 under the action of the magnetic attraction force, and the side surface of the cylindrical battery 10 and the surface of the receiving portion are separated by the abutment, and there is a gap 412. At this time, the cylindrical battery can be transferred to another workstation by moving the cylindrical battery fixture.

[0091] It can be understood that the magnetic attraction in the fixture in the related art will absorb a large amount of metal particles on the surface of the fixture. 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, by providing an abutment member in the accommodating portion, the cylindrical battery and the surface of the accommodating portion can be isolated, and a gap is formed between the two. The metal particles adsorbed on the surface of the accommodating portion by the magnetic attraction member are located in the gap and are difficult to contact with the side surface of the cylindrical battery. Therefore, the side surface of the cylindrical battery is not easily scratched by the metal particles, which protects the anti-rust coating of the cylindrical battery. In addition, the contact area between the shell of the cylindrical battery and the surface of the accommodating portion can be reduced, reducing the wear on the shell.

[0092] In addition, when the cylindrical battery is ejected, that is, when it moves relative to the cylindrical battery fixture along the axis of the cylindrical battery, due to the presence of a gap between the cylindrical battery and the surface of the receiving portion, the burrs or flashes formed by the welding of the end cap of the cylindrical battery are not easy to contact the surface of the receiving portion, and are thus not easy to be scratched and drop metal particles, reducing the formation of metal particles, thereby reducing the risk of scratching the shell and the anti-rust coating. At the same time, the burrs or flashes are also not easy to scratch the surface of the receiving portion, thereby reducing hard scratches on the surface of the receiving portion and reducing the risk of the shell and the anti-rust coating being scratched by hard scratches on the surface of the receiving portion.

[0093] In this embodiment, by providing a sub-groove within the housing and placing an abutment within the sub-groove, the cylindrical battery can be isolated from the surface of the housing, thereby alleviating the problem of cylindrical batteries being easily scratched by metal particles. Furthermore, the sub-groove also provides space for the abutment, facilitating installation and improving the reliability of the connection between the abutment and the body.

[0094] According to some embodiments of the present application, Figures 6 and 7 The surface 411 of the receiving 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 member.

[0095] In this embodiment, a plurality of sub-grooves 420 are provided on the surface 411 of the receiving portion. These sub-grooves can be arranged at intervals along the circumference of the cylindrical battery.

[0096] Figure 7 Two sub-grooves 420 are shown in FIG. 4 . In other embodiments, three, four or more sub-grooves may be provided on the surface of the receiving portion.

[0097] Similarly, the cylindrical battery fixture can be provided with a plurality of abutments 600, for example, 2, 3, 4 or more. In some embodiments, the number of sub-grooves can be the same as the number of abutments. Each abutment 600 can be located in a sub-groove 420. In other embodiments, the number of abutments can be greater than the number of sub-grooves, and a plurality of abutments can be provided in a sub-groove. It is understood that the abutment 600 can be connected to the sub-groove by snapping or bonding, and it can partially protrude from the surface of the accommodating portion.

[0098] In this embodiment, by providing a plurality of sub-grooves spaced apart in the circumferential direction and providing abutment members in the sub-grooves, the cylindrical battery and the accommodating portion can be effectively isolated so that there is no contact between the cylindrical battery and the surface of the accommodating portion, that is, there is no hard contact between the shell of the cylindrical battery and the surface of the accommodating portion. At the same time, the contact surface between each abutment member and the cylindrical battery can be reduced accordingly, further improving the phenomenon that the shell is easily scratched.

[0099] By adjusting the positions of the sub-grooves and the abutment members, the spacing between the cylindrical battery and the surface of the accommodating portion can be made more uniform, reducing the risk of small spacing locations being easily scratched by metal particles due to uneven spacing.

[0100] According to some embodiments of this application, please refer to Figure 4 and Figure 5 The sub-grooves 420 are arranged along a first direction X through the body 400 , wherein the first direction X is parallel to the axis of the cylindrical battery 10 .

[0101] In this embodiment, the sub-groove 420 may also pass through both ends of the body along the first direction X, that is, a second opening 422 may be provided at each end of the sub-groove 420 along the first direction X.

[0102] The receiving portion 410 passes through both ends of the body along the first direction X. That is, both ends of the receiving portion 410 along the first direction may each have a third opening 413 , making it easier for the cylindrical battery to enter the receiving portion.

[0103] The abutting member 600 may extend in the first direction X in a long strip shape so as to be accommodated in the sub-groove 420 .

[0104] By having the accommodating portion 410 pass through both ends of the body along the first direction X, the cylindrical battery can be easily moved into or out of the accommodating portion, thereby facilitating the clamping of the cylindrical battery 10. In addition, by providing the sub-groove 420 passing through the body along the first direction X, the abutment can be easily moved relative to the sub-groove along the first direction, thereby installing or removing the abutment. It is understood that the abutment can be a wearing part that needs to be replaced regularly. By providing the through sub-groove, when the abutment needs to be removed, the abutment can be taken out from the openings at both ends and a new abutment can be installed from the openings, thereby facilitating replacement and improving efficiency.

[0105] It can be understood that in addition to being parallel to the axis of the cylindrical battery 10, the first direction can also have other directions, which can be set according to the specific situation. For example, the first direction has an angle with the axial direction, and the angle can be an acute angle, such as 5°, 10°, 15°, 20°, 25°, 30°, etc.

[0106] In other embodiments, with the direction perpendicular to the axial direction of the cylindrical battery 10 as the first direction, the surface 411 of the accommodating portion may be provided with a plurality of sub-grooves arranged at intervals along the first direction, and the cylindrical battery clamp may include a plurality of abutments arranged at intervals along the first direction.

[0107] It will be understood that in this embodiment, each sub-groove may extend along the circumference of the cylindrical battery. For example, both ends of the sub-groove along its extension direction may penetrate the body 400. For another example, the sub-groove may not penetrate the body 400, or only one end may penetrate the body 400. Each abutment member may also extend along the circumference of the cylindrical battery. The length of the abutment member along its extension direction may be less than or equal to the length of the sub-groove, so that each abutment member can be installed in a sub-groove.

[0108] When the cylindrical battery 10 moves along its axial direction from outside the accommodation portion to inside the accommodation portion, the cylindrical battery 10 can sequentially contact multiple abutments, and the multiple abutments can isolate the surface 411 of the accommodation portion from the side surface of the cylindrical battery 10.

[0109] The arrangement of the sub-grooves provided in this embodiment can isolate the surface 411 of the receiving portion from the cylindrical battery, and has a simple structure and is easy to implement. In addition, it is understood that there are many shapes and arrangements of sub-grooves that can isolate the cylindrical battery from the surface of the receiving portion, and are not limited to the structures given in the above embodiments. Specifically, they can be arranged according to actual conditions.

[0110] According to some embodiments of this application, please refer to Figures 6 to 8 The direction passing through the geometric center of the magnetic 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 portion 500 on the surface 411 of the accommodating portion along the first projection direction A1 is separated from the abutment 600.

[0111] It is understood that the magnetic portion 500 may have various shapes, such as block, column, etc. The geometric center of the magnetic portion 500 is the average position of all vertices or particles of the magnetic portion.

[0112] Figure 6 Here, A1 is the direction passing through the geometric center of the magnetic portion 500 and perpendicular to the axis of the cylindrical battery 10, i.e., the first projection direction. A first projection 511 of the magnetic portion along the first projection direction A1 onto the surface 411 of the receiving portion can be the total projection of each point in the magnetic portion along the first projection direction A1 onto the surface 411 of the receiving portion.

[0113] like Figure 8 As shown, in this embodiment, a columnar magnetic attraction portion extending along a 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 on the surface of the receiving portion along the first projection direction A1 can be Figure 8 The diagonal line pattern area in .

[0114] Continue to refer to Figure 8The first projection 511 is separated from the first opening 421 of the sub-groove 420, so that the abutment member 600 installed in the sub-groove and passing through the first opening is also separated from the first projection 511, and there is a certain size of interval between the two, without crossing or intersection.

[0115] I understand. Figure 8 In the embodiment shown, two abutting members 600 and one magnetic attraction portion 500 are provided. The two abutting members 600 can be respectively located on both sides of the first projection 511 . It can be understood that when there are more abutting members 600 , these abutting members are also separated from the first projection 511 .

[0116] In addition, in other embodiments, the magnetic portion 500 may include a plurality of mutually separated sub-portions, and the first projection 511 may be the sum of the sub-projections of each sub-portion on the surface of the accommodating portion along the first projection direction passing through their respective geometric centers. It can be understood that these sub-projections can be isolated from each other, and the mutual separation of the abutment 600 and the first projection 511 can be understood as that each sub-projection is separated from each abutment 600.

[0117] It can be understood that the abutment 600 and the first projection 511 are separated from each other, so that the abutment and the magnetic attraction portion are staggered in the circumferential direction of the cylindrical battery, and the abutment 600 can be away from the area with strong magnetic attraction (the area where the first projection is located).

[0118] In this embodiment, since the abutment member is separated from the first projection 511, the abutment member can be kept away from areas with strong magnetic attraction. The magnetic attraction at the abutment position is relatively small. Even if metal particles fall onto the surface of the abutment portion, since the metal particles are located away from the magnetic attraction portion and are subjected to relatively small magnetic attraction, the metal particles are not easily adsorbed on the surface of the abutment portion. This can reduce the amount of metal particles on the surface of the abutment portion and reduce the risk of scratches on the cylindrical battery. In addition, even if metal particles exist on the surface of the abutment portion, since the abutment member is separated from the first projection 511, the magnetic attraction to which the metal particles are subjected will cause them to gather in the direction of greater magnetic attraction, that is, to move toward the area of ​​the first projection outside the abutment portion (the position on the surface of the accommodating portion where the magnetic attraction is relatively strong). This allows the metal particles to move from the surface of the abutment portion to the surface of the accommodating portion, and then enter the gap between the cylindrical battery and the surface of the accommodating portion, thereby reducing the accumulation of metal particles on the surface of the abutment portion.

[0119] Furthermore, the staggered arrangement of the abutment member and the magnetic portion prevents the magnetic attraction of the cylindrical battery from being weakened, compared to arrangements where the abutment member is positioned between the magnetic portion and the cylindrical battery, thereby improving the reliability of the cylindrical battery's fixation. Furthermore, because the abutment member contacts the cylindrical battery at a point away from the magnetic portion, the magnetic attraction of the cylindrical battery at this point is smaller, and the abutment member is less subject to wear. This, in turn, protects the abutment member to a certain extent and increases its service life.

[0120] According to some embodiments of the present application, the surface of the abutting member 600 for contacting the cylindrical battery 10 is arc-shaped.

[0121] like Figure 7 and Figure 8 As shown, the surface of the abutment 600 that contacts the cylindrical battery 10 is the first surface 610 , which can be the side surface of the abutment exposed outside the first opening 421 , and the first surface 610 can abut against the side surface of the cylindrical battery.

[0122] It can be understood that in some embodiments, the portion of the abutment member 600 located in the sub-groove 420 can have a smoothly transitioned side surface or a prismatic side surface, and the portion of the abutment member 600 exposed outside the first opening 421 can be arc-shaped, that is, the first surface is arc-shaped.

[0123] In other embodiments, the abutting member 600 may be cylindrical, so that the first surface may be arc-shaped.

[0124] In this embodiment, the first surface is arranged to protrude from the surface of the receiving portion. Metal particles that fall onto the surface of the abutting portion can be moved along the first surface 610 toward the surface of the receiving portion outside the abutting portion under the magnetic attraction of the magnetic attraction portion. The curved surface makes it easier for metal particles to move toward the surface of the receiving portion outside the abutting portion, thereby reducing the amount of metal particles adsorbed on the surface of the abutting portion and reducing the risk of scratches on the cylindrical battery. In addition, due to the curved shape of the first surface, non-metallic particles are less likely to accumulate on the first surface of the abutting portion, further reducing the risk of the cylindrical battery being scratched by non-metallic particles and protecting the anti-rust coating of the cylindrical battery.

[0125] 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 receiving portion satisfy the following relationship: D1<D2.

[0126] Hardness refers to the ability of a material to resist local plastic deformation (such as indentation, scratches, wear, etc.) and is a key mechanical property indicator to measure the softness and hardness of a material.

[0127] In this embodiment, the abutting member 600 and the body 400 can be made of different materials and have different hardnesses. In addition, the hardness D1 of the abutting member 600 can be smaller than the hardness D2 of the surface 411 of the receiving portion.

[0128] In some embodiments, the body 400 can be made of polyetheretherketone (PEEK), which is sufficiently rigid to prevent damage to the cylindrical battery fixture during the production process. The abutment 600 can be made of polyurethane (PU), also known as a polyurethane (PU) elastomer. This material exhibits excellent strength and low compression deformation. Polyurethane is a novel material between plastic and rubber, possessing the rigidity of plastic and the elasticity of rubber.

[0129] In other embodiments, the main body and the abutting member may also be made of other materials, such as metal, plastic, rubber, etc., and may be configured according to actual conditions.

[0130] The hardness D1 of the abutment 600 is less than that of the body 400, so that the body 400 has a higher hardness and is not easily damaged, thereby preventing scratches from forming on the surface of the accommodating portion, thereby improving the phenomenon in which hard scratches on the surface of the accommodating portion in turn scratch the cylindrical battery.

[0131] At the same time, the hardness of the abutment 600 is relatively low, which can reduce the friction between the cylindrical battery and the main body. Moreover, the hardness of the abutment is lower than that of the main body, so it can be used as a wearing part and replaced in time, thereby protecting the cylindrical battery and the main body 400.

[0132] According to some embodiments of the present application, the hardness D1 of the abutting member 600 satisfies A70≤D1≤A90.

[0133] It can be understood that the hardness of the abutment member 600 can be A70, A75, A80, A85, A90, etc., or D1 of the abutment member can also satisfy A75≤D1≤A90, or A70≤D1≤A85, or A75≤D1≤A85, etc.

[0134] To reduce the cost of consumables and the time required to replace abutments on the production line due to wear and tear, the inventors conducted batch verification of abutments with varying hardness. The results showed that softer abutments caused less damage to cylindrical batteries, but also resulted in more severe wear and a shorter service life. Ultimately, abutments with a hardness of A70-A90 demonstrated the best overall performance. Abutments with a hardness higher than A90 risk scratching cylindrical batteries, but their service life is significantly extended. Abutments with a hardness lower than A70 pose no risk of scratching cylindrical batteries, but have a shorter service life, experiencing significant wear after producing approximately 15,000 cylindrical batteries.

[0135] By setting the hardness of the abutment to no more than A90, the cylindrical battery shell can be protected from scratches. By setting the hardness of the abutment to no less than A70, the service life of the abutment can be greatly increased, reducing the cost of consumables.

[0136] It is understandable that when the cylindrical battery slides up and down in the cylindrical battery fixture, the welding burrs of the end cover will scratch the raised area of ​​the abutment. Since the abutment is made of a relatively soft material, its surface scratches have no effect on the shell of the cylindrical battery, but the abutment will be damaged after being scratched by the shell. If the hardness is too soft, its wear life will be too short, which will increase the consumption cost and the time cost of replacing the abutment on the production line. By setting the hardness between A70 and A90, the effect of not scratching the shell but having a low degree of wear itself is achieved.

[0137] Figure 9 A schematic structural diagram of a cylindrical battery fixture provided in some other embodiments of the present application; Figure 10 for Figure 9 Schematic diagram of the structure from another angle; Figure 11 for Figure 9 Dorsal view of; Figure 12 for Figure 9 Side view of Figure 13 for Figure 10 Schematic diagram of the decomposition structure; Figure 14 for Figure 9 A top view of Figure 15 for Figure 9 Front view of .

[0138] Please refer to Figures 9 to 15 According to some embodiments of the present application, the magnetic portion 500 includes a plurality of magnetic assemblies 510 spaced apart along the circumference of the cylindrical battery. With a direction passing through the geometric center of the magnetic assembly 510 and perpendicular to the axis of the cylindrical battery 10 as a second projection direction, the magnetic assembly has a second projection 512 on the surface of the receiving portion along the second projection direction. Among the plurality of second projections 512 of the plurality of magnetic assemblies, the abutment member 600 is disposed between two adjacent second projections 512, or the abutment member 600 is disposed outside the outermost second projection 512.

[0139] In this embodiment, the magnetic attraction portion 500 includes a plurality of dispersed magnetic attraction components 510 , and the plurality of magnetic attraction components 510 may be arranged at intervals along the circumference of the cylindrical battery.

[0140] It can be understood that the vertical distance between each magnetic component and the accommodating portion can be the same, so that each magnetic component is at the same distance from the cylindrical battery, so that the magnetic force can be evenly applied from multiple directions of the side surface of the cylindrical battery, making the clamping of the cylindrical battery more stable.

[0141] The second projection direction of the magnetic assembly refers to a direction passing through the geometric center of each magnetic assembly and perpendicular to the axis of the cylindrical battery 10. It can be understood that different magnetic assemblies may have different second projection directions.

[0142] For example Figure 13 and Figure 14Three magnetic components 510 are shown. From left to right, the second projection direction of the first magnetic component is the direction passing through its geometric center and perpendicular to the axis of the cylindrical battery, which is represented by A3. Similarly, the second projection direction of the second magnetic component is represented by A2, and the second projection direction of the third magnetic component is represented by A4. Figure 15 , three groups of second projections 512 of three magnetic components 510 on the surface of the receiving portion are shown.

[0143] like Figure 15 The abutment member can be arranged between two adjacent second projections, so that the abutment member can be arranged away from the magnetic attraction component.

[0144] Figure 16 For a schematic diagram of the structure of a cylindrical battery fixture provided in some embodiments of this application, please refer to Figure 16 In other embodiments, the abutment member may also be provided outside the outermost second projection 512, for example, Figure 16 In the figure, the abutment member can also be set on one side of the first straight line (the straight line where A3 is located) along the counterclockwise direction (the abutment member 600 on the far left), or the abutment member can also be set on one side of the second straight line (the straight line where A4 is located) along the clockwise direction (the abutment member 600 on the far right), so that the abutment member can also be set away from the magnetic attraction component.

[0145] Understandably, Figure 14 In the embodiment, when the diameters of the two abutting members embedded in the sub-grooves deviate or the degree of wear is different, the cylindrical battery and the receiving portion are not aligned, and the cylindrical battery will deviate to one end, easily making direct contact with the surface of the receiving portion, which can easily cause scratches on the shell. In order to improve this problem, Figure 16 As shown, two more abutment members can be added on both sides, that is, among the multiple abutment members, some can be set between two adjacent second projections, and the other part can be located outside the outermost second projection, so as to assist the positioning of the cylindrical battery, improve the risk that the cylindrical battery may contact the surface of the accommodating part, and further improve the scratch problem of the shell.

[0146] In addition, Figure 16 In the embodiment, the number and size of the magnetic components can be adjusted to increase the magnetic force and prevent the cylindrical battery from slipping.

[0147] It can be understood that since the magnetic portion of this embodiment includes multiple magnetic components, the first projection direction A1 of the magnetic portion in the above embodiment may refer to the second projection direction (A2 to A4) of each magnetic component in this embodiment. In addition, the first projection 511 of the magnetic portion on the surface of the accommodating portion may include the second projection 512 of each magnetic component on the surface of the accommodating portion. For example, Figure 15The three groups of second projections 512 can constitute the first projection 511, and the first projection 511 and the abutment are separated from each other, which means that each abutment can be separated from each second projection, that is, there is no intersection or crossover between the two.

[0148] By providing multiple magnetic assemblies, this embodiment can simultaneously apply magnetic attraction to the cylindrical battery from various angles, improving the stability of the cylindrical battery's clamping. Furthermore, because the magnetic assemblies are distributed circumferentially around the cylindrical battery, the magnetic attraction forces exerted on the cylindrical battery by each magnetic assembly are more evenly distributed, resulting in a more uniform spacing between the cylindrical battery and the surface of the receiving portion, further reducing the risk of scratches on the cylindrical battery.

[0149] In addition, this embodiment can make the abutment away from the magnetic attraction component, and the magnetic attraction force at the abutment position is relatively small. Even if metal particles fall onto the surface of the abutment portion, since the metal particles are located away from the magnetic attraction portion and are subjected to relatively small magnetic attraction force, the metal particles are not easily adsorbed on the surface of the abutment portion, thereby reducing the number of metal particles on the surface of the abutment portion and reducing the risk of scratches on the cylindrical battery. In addition, even if metal particles exist on the surface of the abutment portion, the magnetic attraction force they are subjected to will cause them to gather in the direction of greater magnetic attraction, that is, to move toward the second projection of the outer side of the abutment portion (the position on the surface of the accommodating portion where the magnetic attraction force is relatively strong), thereby allowing the metal particles to move from the surface of the abutment portion to the surface of the accommodating portion, and then enter the gap between the cylindrical battery and the surface of the accommodating portion, thereby reducing the accumulation of metal particles on the surface of the abutment portion.

[0150] Furthermore, compared to a case where the abutment member is positioned between the magnetic attraction portion and the cylindrical battery, this design does not weaken the magnetic attraction applied to the cylindrical battery, thereby improving the stability of the cylindrical battery's fixation. Furthermore, because the contact point between the abutment member and the cylindrical battery is located away from the magnetic attraction assembly, the magnetic attraction applied to the cylindrical battery at this location is relatively small, and the abutment member is also relatively less subject to wear. This, in turn, protects the abutment member to a certain extent and increases its service life.

[0151] In other embodiments, the plurality of magnetic components 510 may be distributed along other directions, for example, spaced apart along the first direction, etc., and may be specifically arranged according to actual conditions.

[0152] According to some embodiments of the present application, continue to refer to Figures 10 to 15 Each magnetic assembly 510 includes a plurality of magnetic members 520 arranged along a first direction X, wherein the first direction X is parallel to the axis of the cylindrical battery 10 .

[0153] In this embodiment, each magnetic assembly may further include a plurality of magnetic members 520, which may be spaced apart along the first direction X. It is understood that these magnetic members may be evenly distributed along the first direction of the body, so that each position of the body along the first direction may be covered by the magnetic force, thereby improving the stability of the cylindrical battery fixation.

[0154] It is understandable that Figure 15 The second projection of each magnetic component may include projections of multiple magnetic members 520. It can be understood that in each magnetic component, each magnetic member 520 can be projected in a direction passing through its own geometric center and perpendicular to the axis of the cylindrical battery, thereby forming a respective sub-projection on the surface of the accommodating portion, and each sub-projection constitutes a second projection. Figure 15 Each dotted box in the figure shows a second projection 512, and each second projection 512 may include five sub-projections arranged along the first direction X, that is, each magnetic attraction assembly may include five magnetic members. The abutment member may be separated from these sub-projections, that is, they do not intersect or overlap with each other.

[0155] In this embodiment, multiple magnetic elements are provided to apply magnetic attraction at multiple locations along the axis of the cylindrical battery, allowing the cylindrical battery to be stably clamped. Furthermore, the magnetic attraction force can be adjusted by adjusting the number of magnetic elements. Compared to long strip magnets, the magnetic attraction assembly provided in this embodiment can adjust the magnetic attraction force as needed, providing better applicability.

[0156] According to some embodiments of the present application, a plurality of mounting holes 430 are provided on the outer side of the main body 400 away from the accommodating portion 410 , and the plurality of magnetic members 520 are respectively installed in the plurality of mounting holes 430 in a one-to-one correspondence.

[0157] In this embodiment, a plurality of mounting holes 430 can be provided on the outside of the main body away from the accommodating portion, and each magnetic component 520 can be installed in a mounting hole. The length of each mounting hole can be set according to its distance from the surface of the accommodating portion, so that the distance between the bottom of each mounting hole 430 and the surface of the accommodating portion can be the same, so that the magnetic components 520 installed to the bottom of the hole can be distributed along the circumference of the cylindrical battery, and the distance between the magnetic components 520 and the cylindrical battery can be kept the same.

[0158] In this embodiment, the shape of the mounting hole can be set according to the shape of the magnetic component, for example, it can be a cylindrical hole or a square hole.

[0159] By setting multiple mounting holes 430 on the outside of the main body away from the accommodating portion, the magnetic attraction generated by the magnetic attraction parts in the mounting holes can adsorb the cylindrical battery in the accommodating portion, and the magnetic attraction parts can be set in any shape other than the main body 400. The magnetic attraction parts can be set close to the cylindrical battery, thereby increasing the magnetic attraction force on the cylindrical battery and making it easier for the magnetic attraction parts to adsorb the cylindrical battery.

[0160] Figure 17 for Figure 13 Schematic diagram of the structure of the magnetic component; 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 component 520 includes a plurality of sub-magnetic components 521 arranged along the axis of the mounting hole 430, and the plurality of sub-magnetic components 521 are all accommodated in the mounting hole 430.

[0161] In this embodiment, the axis of the mounting hole 430 can be perpendicular to the axis of the cylindrical battery, so that the magnetic element 520 therein can face the side surface of the cylindrical battery. Figure 17 In the embodiment, each magnetic member may further include a plurality of sub-magnetic members 521 arranged along the axis of the mounting hole. It is understood that the number of sub-attracting portions in the magnetic member may be the same or different.

[0162] In this embodiment, since the magnetic attraction component includes multiple sub-magnetic attraction components, when magnetically attracting cylindrical batteries of different masses, the magnetic attraction force of the magnetic attraction component can be adjusted by increasing or decreasing the number of sub-magnetic attraction components in each magnetic attraction component to adapt to different cylindrical batteries, thereby making the cylindrical battery clamp more applicable.

[0163] According to some embodiments of this application, please refer to Figures 4 to 7 The cylindrical battery fixture also 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; the sub-groove 420 has a second opening 422 at one end along the first direction X, and the accommodating portion has a third opening 413 connected to the second opening at one end along the first direction X; the blocking member 700 covers at least a portion 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.

[0164] In this embodiment, a blocking member 700 may be provided on both end surfaces of the main body 400 along the first direction X. The blocking member may be connected to the main body in a common detachable manner, such as screw connection, clamping connection, etc. Figure 7 In the embodiment, the blocking member 700 can be fixed to the body 400 by a plurality of screws.

[0165] The blocking member 700 may be a sheet-like structure, which may be attached to the body 400 , thereby not increasing the volume of the cylindrical battery fixture.

[0166] The two ends of the sub-groove 420 along the first direction each have a second opening 422, which can be located on the end surface 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 to the second opening 422 of the sub-groove respectively.

[0167] The accommodating portion may have a third opening 413 at each of the two ends along the first direction X. The third opening 413 is provided on the end surface of the body and may be communicated with the second opening 422 .

[0168] The blocking member can cover at least a portion of the second opening, that is, the blocking member can cover a portion of the abutting member installed in the sub-groove 420, thereby blocking the movement of the abutting member in the first direction and preventing the abutting member from escaping from the sub-groove. In addition, the blocking member can also be located outside the third opening 413, that is, the blocking member does not protrude from the surface of the receiving portion, thereby not hindering the relative movement of the cylindrical battery and the receiving portion in the first direction.

[0169] It is understood that the number of blocking members provided on each end face of the body can be one, thereby covering the second openings of all sub-grooves and blocking all abutting members. Of course, the number of blocking members provided on each end face of the body can also be multiple, each blocking member can cover one or more second openings, thereby blocking one or more abutting members 600.

[0170] It is understandable that the abutment is easily scratched and damaged by the burrs of the end cap of the cylindrical battery and is a consumable part. When it is worn to the point where its first surface is flush with the surface of the accommodating portion, the protective function of the abutment is lost and it needs to be replaced in time. At this time, the screws on the blocking member can be unscrewed, the blocking member can be removed, and the abutment can be pulled out. The new abutment can be inserted into the sub-groove and the blocking member can be fixed to the two ends of the body with screws. In this embodiment, by providing a blocking member, the abutment can be quickly replaced, reducing the downtime and maintenance time caused by replacing the abutment, and improving production efficiency.

[0171] According to some embodiments of the present application, the abutting member 600 extends along the first direction X, and one end of the abutting member 600 along the first direction X abuts against the blocking member 700 .

[0172] It can be understood that the size of the abutting member 600 along the first direction can be the same as the size of the sub-groove along the first direction, so that both ends of the abutting member can abut against the two blocking members respectively.

[0173] By setting the abutment member to extend along the first direction, the two ends of the abutment member can abut against the two blocking members. During the movement of the cylindrical battery clamp, the abutment member can be prevented from moving relative to the main body along the first direction, thereby improving the reliability of the relative movement between the cylindrical battery and the abutment member.

[0174] According to some embodiments of the present application, Figures 4 and 5 The surface 411 of the accommodating portion includes a middle section 414 and a guide section 415 connected to one end of the middle section 414 along the first direction X. The guide section 415 is arranged obliquely relative to the middle section 414. With a plane perpendicular to the first direction X as a cross section, the size of the area enclosed by the cross section of the guide section 415 gradually increases from the end close to the middle section 414 to the end away from the middle section 414. The first direction X is arranged parallel to the axis of the cylindrical battery 10.

[0175] It can be understood that the surface 411 of the accommodating portion may include a middle section 414 and two guide sections 415 located at both ends of the middle section 414. The middle section 414 may be part of a cylindrical surface, and the guide section 415 may be inclined relative to the middle section, that is, it may be part of a frustum.

[0176] like Figure 5 The first direction may be the up-down direction in the figure. Taking the guide segment 415 at the upper portion of the middle segment 414 as an example, the size of the area enclosed by the cross section of the guide segment 415 (the area enclosed by an arc and a straight line connecting the two end points of the arc) may gradually decrease from one end close to the middle segment to the end away from the middle segment (from bottom to top), thereby allowing the guide segment 415 to present an outwardly expanding structure.

[0177] In this embodiment, by providing an inclined guide section, the openings at both ends of the accommodating portion along the first direction can be enlarged, making it easier for the cylindrical battery to move into the accommodating portion along the first direction, and preventing the edge of the accommodating portion from scratching the outer shell of the cylindrical battery.

[0178] According to some embodiments of the present application, Figure 7 The surface 411 of the accommodating portion is provided with slope surfaces 416 at both ends along the circumference of the cylindrical battery. The accommodating portion 410 has a fourth opening 417 located between the two slope surfaces 416. The direction perpendicular to the fourth opening 417 and from the inside to the outside along the accommodating portion 410 is the second direction Y, and the distance L2 between the two slope surfaces 416 gradually increases along the second direction Y.

[0179] In this embodiment, the surface of the accommodating portion may have a fourth opening 417 located between the two third openings 413, and the fourth opening 417 may be a side opening of the accommodating portion. The surface of the accommodating portion may have a slope surface 416 at each end along the circumferential direction, and the two slope surfaces may be arranged opposite to each other.

[0180] like Figure 7 In the figure, Y shows the second direction, that is, the direction from the inside of the accommodating portion to the outside thereof and perpendicular to the fourth opening. It can be understood that the second direction Y is a vector direction, that is, it is the same as the direction of the arrow, and the direction opposite to the arrow direction does not belong to the second direction.

[0181] The distance L2 between the two slope surfaces 416 may gradually increase along the second direction Y, such that the fourth opening has an outwardly expanding structure.

[0182] In this embodiment, by providing the sloped surface, the fourth opening of the accommodating portion can be expanded from the inside to the outside, thereby preventing the edge of the accommodating portion from scratching the outer shell of the cylindrical battery.

[0183] An embodiment of the present application provides a welding device, comprising any of the cylindrical battery clamps described above.

[0184] The welding equipment can be used to weld cylindrical batteries, and the cylindrical battery fixture can assist the cylindrical battery 10 in flowing between various workstations.

[0185] It can be understood that the welding equipment provided in the present application applies any of the above-mentioned cylindrical battery clamps, and therefore the welding equipment has all the beneficial effects of the above-mentioned cylindrical battery clamps, which will not be described in detail here.

[0186] In one embodiment, a cylindrical battery fixture includes: a body 400, a magnetic portion 500, and a plurality of abutting members 600. The body 400 has a receiving portion 410 for receiving at least part of the cylindrical battery 10, and the surface 411 of the receiving portion is provided with a plurality of sub-grooves 420, and the sub-grooves 420 have a first opening 421 located on the surface 411 of the receiving portion; each abutting member 600 is connected to a sub-groove 420, and the abutting member 600 is further provided with a first opening 421 and protrudes from the surface 411 of the receiving portion; the magnetic portion 500 is connected to the body 400, and the magnetic portion 500 is used to generate a magnetic attraction force so that the cylindrical battery 10 is fixed in the receiving 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 receiving portion.

[0187] In this embodiment, the abutment 600 is a cylindrical structure, and multiple abutments can be arranged along the circumference of the cylindrical battery, with the direction passing through the geometric center of the magnetic attraction portion 500 and perpendicular to the axis of the cylindrical battery 10 as the first projection direction A1. The first projection 511 of the magnetic attraction portion 500 on the surface 411 of the accommodating portion along the first projection direction A1 is separated from the abutment 600.

[0188] Blocking members 700 are installed at both ends of the main body 400 by screws. The blocking members 700 can cover part of the abutment 600, but do not protrude inward to the surface of the accommodating portion, thereby playing the role of blocking the abutment 600. During the up and down sliding process of the cylindrical battery, the abutment will not slide or fall off. At the same time, the abutment can be quickly disassembled and installed.

[0189] In addition, in some embodiments, a simple SOP (Standard Operating Procedure) document can be generated at the production site, and on-site employees can quickly perform the replacement of the abutment parts based on the SOP document, greatly saving the time cost of actual production.

[0190] In this embodiment, by cutting a groove in the housing and adding abutment members, the cylindrical surface of the cylindrical battery is prevented from directly contacting the surface of the housing. Specifically, the cylindrical surface of the cylindrical battery directly contacts the cylindrical surface of the abutment member, rather than the surface of the housing, significantly reducing the wear of the housing surface on the cylindrical battery housing.

[0191] Furthermore, due to the gap between the cylindrical battery and the surface of the housing, fallen metal particles cannot be retained in this area, thus avoiding the risk of metal particles scratching the cylindrical battery housing. Therefore, this embodiment not only optimizes the structure of the cylindrical battery clamp, but also effectively improves the wear and metal particle residue problems caused by direct contact between the traditional clamp and the cylindrical battery housing, providing a more efficient and reliable solution for battery manufacturing.

[0192] In addition, the abutment 600 can be set away from the area with strong magnetic attraction. The magnetic attraction at the abutment position is small. Even if metal particles fall on the surface of the abutment, due to its location away from the magnetic attraction, the magnetic attraction it receives is small, and the metal particles are not easily adsorbed on the surface of the abutment, thereby reducing the number of metal particles on the surface of the abutment and reducing the risk of scratching the cylindrical battery. In addition, even if there are metal particles on the surface of the abutment, due to the separation of the abutment and the first projection 511, the magnetic attraction to the metal particles will cause them to gather in the direction of strong magnetic attraction, that is, to move toward the area of ​​the first projection outside the abutment (the position on the surface of the accommodating portion where the magnetic attraction is strong), thereby allowing the metal particles to move from the surface of the abutment 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 abutment. When the cylindrical battery slides up and down on the cylindrical battery fixture, it only contacts the raised area of ​​the abutment, which can improve or even solve the problem of metal particles scratching the shell.

[0193] Furthermore, the staggered arrangement of the abutment member and the magnetic portion prevents the magnetic attraction of the cylindrical battery from being weakened, thereby improving the secure fixation of the cylindrical battery, compared to a case where the abutment member is positioned between the magnetic portion and the cylindrical battery. Furthermore, because the contact point between the abutment member and the cylindrical battery is located away from the magnetic portion, the magnetic attraction of the cylindrical battery at this location is relatively small, and the abutment member is also relatively less subject to wear. This, in turn, protects the abutment member to a certain extent and increases its service life.

[0194] In this embodiment, the hardness of the abutment can be less than the hardness of the surface of the accommodating portion, and the hardness of the abutment is A70~A90. It can be understood that when the cylindrical battery slides up and down in the cylindrical battery fixture, the welding burrs of the end cover will scratch the raised area of ​​the abutment. Since the abutment is made of a relatively soft material, its surface scratches have no effect on the shell of the cylindrical battery, but the abutment will be damaged after being scratched by the shell. If it is too soft, its wear life will be too short, which will increase the consumption cost and the time cost of replacing the glue stick on the production line. By setting the hardness between A70~A90, the effect of not scratching the shell but also having a low degree of wear itself is achieved.

[0195] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A cylindrical battery fixture, characterized in that: include: The body has a receiving portion for receiving at least some cylindrical batteries, wherein the surface of the receiving portion is provided with at least one sub-groove, and the sub-groove has a first opening; at least one abutting member, the at least one abutting member being disposed in the at least one sub-groove through the first opening and protruding from the surface of the accommodating portion, the abutting member being configured to abut against a side surface of the cylindrical battery to isolate the side surface of the cylindrical battery from the surface of the accommodating portion; The magnetic attraction portion is provided on the main body, and the magnetic attraction portion can generate a magnetic attraction force acting on the side surface of the cylindrical battery so that the cylindrical battery is fixed in the accommodating portion.

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

3. The cylindrical battery fixture according to claim 1, characterized in that: The sub-grooves are arranged along a first direction passing through the body; wherein the first direction is arranged parallel to the axis of the cylindrical battery.

4. The cylindrical battery fixture according to any one of claims 1 to 3, characterized in that: The surface of the abutting member for contacting the cylindrical battery is arc-shaped.

5. The cylindrical battery fixture according to any one of claims 1 to 3, characterized in that: The hardness D1 of the abutting member and the hardness D2 of the surface of the receiving portion satisfy the following relationship: D1 < D2.

6. The cylindrical battery fixture according to any one of claims 1 to 3, characterized in that: The hardness D1 of the abutting member satisfies: A70≤D1≤A90.

7. The cylindrical battery fixture according to any one of claims 1 to 3, characterized in that: A direction passing through the geometric center of the magnetic attraction portion and perpendicular to the axis of the cylindrical battery is taken as a first projection direction, and a first projection of the magnetic attraction portion on the surface of the accommodating portion along the first projection direction is arranged to be separated from the abutment member.

8. The cylindrical battery fixture according to any one of claims 1 to 3, characterized in that: The magnetic attraction portion includes a plurality of magnetic attraction components arranged at intervals along the circumference of the cylindrical battery; A direction passing through the geometric center of the magnetic assembly and perpendicular to the axis of the cylindrical battery is taken as a second projection direction, and the magnetic assembly has a second projection on the surface of the accommodating portion along the second projection direction; In the plurality of second projections of the plurality of magnetic components, the abutting member is arranged between two adjacent second projections, or the abutting member is arranged outside the outermost second projection.

9. The cylindrical battery fixture according to claim 8, characterized in that: Each of the magnetic attraction assemblies includes a plurality of magnetic attraction members arranged along a first direction, wherein the first direction is arranged parallel to the axis of the cylindrical battery.

10. The cylindrical battery fixture according to claim 9, characterized in that: A plurality of mounting holes are provided on the outer side of the main body away from the accommodating portion, and the plurality of magnetic elements are respectively mounted in the plurality of mounting holes in a one-to-one correspondence.

11. The cylindrical battery fixture according to claim 10, characterized in that: The axis of the mounting hole is perpendicular to the axis of the cylindrical battery. The magnetic component includes a plurality of sub-magnetic components arranged along the axis of the mounting hole, and the plurality of sub-magnetic components are all accommodated in the mounting hole.

12. The cylindrical battery fixture according to claim 2 or 3, characterized in that: Also includes: blocking member; The blocking member is detachably connected to the end surface of the body along the first direction; The sub-groove has a second opening at one end along the first direction, and the accommodating 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; Wherein, the first direction is arranged parallel to the axis of the cylindrical battery.

13. The cylindrical battery fixture according to claim 12, characterized in that: The abutting member extends along the first direction, and one end of the abutting member along the first direction abuts against the blocking member.

14. The cylindrical battery fixture according to any one of claims 1 to 3, characterized in that: The surface of the accommodating portion includes a middle section and a guide section connected to one end of the middle section along the first direction, and the guide section is arranged obliquely relative to the middle section; Taking a plane perpendicular to the first direction as a cross section, the size of the area enclosed by the cross section of the guide segment gradually increases from an end close to the middle segment to an end away from the middle segment; Wherein, the first direction is arranged parallel to the axis of the cylindrical battery.

15. The cylindrical battery fixture according to any one of claims 1 to 3, characterized in that: The surface of the accommodating portion is respectively provided with sloped surfaces at both ends along the circumference of the cylindrical battery. The accommodating portion has a fourth opening located between the two sloped surfaces. The direction perpendicular to the fourth opening and along the accommodating portion from the inside to the outside is the second direction, and the distance between the two sloped surfaces gradually increases along the second direction.

16. A welding device, characterized in that: A cylindrical battery fixture comprising the cylindrical battery fixture according to any one of claims 1 to 15.

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