Welding device

Abstract

The application discloses a welding device. The welding device comprises a rotating disc assembly, a plurality of feeding assemblies, a rotating assembly and a welding assembly. The rotating disc assembly comprises a rotating disc and a driving member, the driving member is connected with the rotating disc and is used for driving the rotating disc to rotate around a rotating shaft. The feeding assemblies are connected with the rotating disc and are distributed at intervals around the rotating shaft, and the feeding assemblies are used for clamping or releasing batteries. The rotating assembly is oppositely spaced apart from the rotating disc in a first direction and jointly forms a welding interval. The rotating disc can drive each feeding assembly and the battery on the feeding assembly to rotate to the welding interval together, and the first direction is parallel to the axial direction of the rotating shaft. The welding assembly is opposite to the welding interval in a second direction, and the second direction intersects the first direction. The welding assembly is used for welding the top cover and the shell of the battery in the welding interval. The rotating assembly is used for driving the battery to rotate when the welding assembly welds the top cover and the shell of the battery, so that the welding assembly can weld different joint positions between the top cover and the shell in the battery.

Description

Technical Field

[0001] This application relates to the field of welding technology, and more specifically, to a welding apparatus. Background Technology

[0002] In battery manufacturing, a welding device is used to weld the top cover onto the casing. The casing primarily houses the electrode components and electrolyte. The internal components achieve electrochemical reactions by connecting to the positive or negative terminals of the top cover. Typically, when welding multiple batteries simultaneously, multiple sets of mating casings and top covers are mounted on a single integral loading assembly on a rotating turntable. Driven by the turntable, they sequentially approach the welding head to complete the welding. At this stage, each battery lacks an independent adjustment mechanism, and the alignment error between the battery and the welding head can accumulate multiple times, leading to welding misalignment. Furthermore, the concentricity of the top cover and casing cannot be compensated for, resulting in poor welding concentricity and affecting the yield rate of the battery top cover during casing welding. Utility Model Content

[0003] This application provides a welding apparatus to solve at least one of the aforementioned technical problems.

[0004] The welding apparatus provided in this application includes a turntable assembly, multiple feeding assemblies, a rotating assembly, and a welding assembly. The turntable assembly includes a turntable and a driving component. The driving component is connected to the turntable and drives the turntable to rotate around a rotation axis. The feeding assemblies are connected to the turntable and spaced apart around the rotation axis, and are used to clamp or release batteries. The rotating assembly and the turntable are spaced apart relative to each other in a first direction and together form a welding zone. The turntable can drive each feeding assembly and the battery on the feeding assembly to rotate together into the welding zone. The first direction is parallel to the axial direction of the rotation axis. The welding assembly is opposite to the welding zone in a second direction, and the second direction intersects the first direction. The welding assembly is used to weld the top cover and casing of the battery within the welding zone. The rotating assembly is used to drive the battery to rotate when the welding assembly welds the top cover and casing of the battery, so that the welding assembly can weld different contact points between the top cover and casing of the battery.

[0005] In some embodiments, the turntable includes a first surface and a second surface facing away from each other in the first direction. The feeding assembly includes a clamping member, a feeding drive member, and a feeding transmission member. The clamping member is disposed on the side containing the first surface. The feeding drive member is disposed on the side containing the second surface and is used to output a feeding driving force. The feeding transmission member passes through the turntable, with one end connected to the clamping member and the other end spaced apart from the feeding drive member. The rotation of the turntable causes the clamping member and the feeding transmission member to rotate together relative to the feeding drive member, so that the feeding transmission member can be aligned with the feeding drive member in the first direction. When the feeding drive moves closer to the feeding transmission member aligned with it along the first direction and applies a feeding driving force to the feeding transmission member, the feeding transmission member drives the clamping member to open to release the battery; when the feeding drive moves away from the feeding transmission member aligned with it along the first direction and releases the feeding driving force applied to the feeding transmission member, the feeding transmission member drives the clamping member to close to clamp the battery.

[0006] In some embodiments, the feeding transmission member includes a first transmission arm and a second transmission arm. The first transmission arm has two opposite ends in the length direction, and the second transmission arm has two opposite ends in the length direction. The end of the first transmission arm near the feeding drive member is hinged to the end of the second transmission arm near the feeding drive member. The clamping member includes a first clamping sub-component and a second clamping sub-component. The end of the first transmission arm away from the feeding drive member is connected to the first clamping sub-component, and the end of the second transmission arm away from the feeding drive member is connected to the second clamping sub-component. When the feeding drive member moves closer to the feeding transmission member along the first direction and applies a feeding driving force to the feeding transmission member, the first transmission arm and the second transmission arm move away from each other, causing the first clamping sub-component and the second clamping sub-component to move away from each other, thereby releasing the battery. When the feeding drive member moves away from the feeding transmission member along the first direction and the feeding driving force applied to the feeding transmission member is released, the first transmission arm and the second transmission arm move closer to each other, causing the first clamping sub-component and the second clamping sub-component to move closer to each other, thereby clamping the battery.

[0007] In some embodiments, the feeding assembly further includes a base, a first elastic element, and a second elastic element. The base is disposed on the first surface, and the clamping member is mounted on the base. The two ends of the first elastic element are respectively connected to the first clamping member and the base, and the first elastic element provides an elastic restoring force when the first clamping member approaches the second clamping member. The two ends of the second elastic element are respectively connected to the second clamping member and the base, and the second elastic element provides an elastic restoring force when the second clamping member approaches the first clamping member.

[0008] In some embodiments, the feeding drive is a telescopic cylinder or a linear motor, and is capable of moving along the first direction.

[0009] In some embodiments, the first drive arm and the second drive arm are symmetrical about an axis parallel to the first direction, and the first clamping member and the second clamping member are symmetrical about an axis perpendicular to the first direction.

[0010] In some embodiments, the welding apparatus further includes a support platform and a moving drive assembly, the support platform being located above the turntable. The moving drive assembly is disposed on the support platform and is used to drive the rotating assembly to move relative to the support platform in the first direction. The rotating assembly includes a rotating drive component, a rotating transmission component, a rotating component, and a pressure head. The rotating drive component is connected to the support platform and is used to output a rotating driving force. The rotating transmission component is connected to the rotating drive component and is used to transmit the rotating driving force output by the rotating drive component. The rotating component is connected to the rotating drive component and is used to rotate about an axis parallel to the first direction under the drive of the rotating driving force transmitted by the rotating transmission component. The pressure head is connected to the rotating component. When the turntable drives the feeding assembly and the battery on the feeding assembly to rotate together to the welding area, the moving drive assembly drives the rotating assembly to move relative to the support platform in the first direction and drives the rotating component and the pressure head closer to the battery, so that the pressure head abuts against the top cover of the battery. The rotary drive is used to drive the rotating member to rotate via the rotary transmission member, and transmits the rotation to the battery through the pressure head, so as to drive the battery to rotate.

[0011] In some embodiments, the rotating assembly further includes a loading seat and a third elastic element, the pressure head is fixedly connected to the rotating element, and the rotating element passes through the loading seat and the rotating transmission element. The two ends of the third elastic element are respectively connected to the loading seat and the pressure head.

[0012] In some embodiments, the rotary drive is a rotary motor.

[0013] In some embodiments, the motion drive assembly includes a first bracket, a motion drive member, and a second bracket. The first bracket is disposed on the support platform. The motion drive member is mounted on the first bracket and extends beyond the support platform in a direction perpendicular to the first direction. The second bracket is connected to the motion drive member and extends beyond the support platform in a direction perpendicular to the first direction. The rotating assembly is mounted on the second bracket, and the motion drive member drives the second bracket and the rotating assembly mounted on the second bracket to move together along the first direction.

[0014] In some embodiments, the moving drive is a telescopic cylinder or a linear motor, and is capable of moving along the first direction.

[0015] In some embodiments, the first bracket is provided with a guide portion extending along the first direction, and the second bracket is provided with a mating portion extending along the first direction. The guide portion and the mating portion cooperate to guide the second bracket to move along the first direction.

[0016] In some embodiments, the welding assembly includes a welding head and an alignment frame. The welding head emits a laser to weld the battery, and the radiation area of ​​the laser emitted by the welding head covers at least a portion of the junction between the top cover and the casing of the battery. The alignment frame is used to fix and mount the welding head. The position of the welding head relative to the alignment frame in a first direction is adjustable to change the relative position of the welding head relative to the welding section in the first direction; and / or, the welding head is rotatable relative to the alignment frame about an axis parallel to a second direction to change the radiation area of ​​the welding head.

[0017] In some embodiments, the feeding assembly includes a mounting position for receiving the battery. The rotating assembly includes a rotating member and a pressure head, the rotating member being connected to the pressure head. The rotating member is rotatable about an axis parallel to the first direction, and when the pressure head is at least partially in contact with the battery, the rotation of the rotating member is transmitted to the battery through the pressure head to drive the battery to rotate. The number of mounting positions, the number of rotating members, the number of pressure heads, and the number of welding assemblies are the same, and there is at least one of them.

[0018] In some embodiments, the welding apparatus further includes a detection component. When the turntable rotates the loading assembly and the battery on the loading assembly together into the welding zone, the detection component is aligned with at least a portion of the battery on one of the loading assemblies. The detection component is used to detect whether the rotating assembly is aligned with the battery on the loading assembly entering the welding zone.

[0019] In the welding apparatus of this embodiment, multiple feeding assemblies are connected to a turntable. When the turntable is driven to rotate around a rotation axis by a drive member, the multiple feeding assemblies and the clamped battery can rotate together to the welding zone under the drive of the turntable. At this time, the welding assembly can weld at least a portion of the area where the top cover and the casing of the battery are in contact within the welding zone. Further, the rotating assembly drives the battery to rotate, and the welding assembly welds different contact positions between the top cover and the casing to complete the top cover insertion welding of the battery. Because multiple feeding assemblies are provided, the relative positions of different batteries and welding assemblies can be adjusted independently, and the matching error of the welding head in the battery and welding assembly will not accumulate. This prevents the welding between the top cover and the casing of the battery from shifting, and the rotating assembly can drive the battery to rotate for welding, thus compensating for the concentricity of the top cover and the casing. The welding concentricity of the top cover and the casing is good, resulting in a high yield rate for the top cover insertion welding of the battery.

[0020] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein: Figure 1 This is a schematic diagram of the welding apparatus according to certain embodiments of this application at one angle; Figure 2 yes Figure 1 A schematic diagram of the welding device shown from another angle; Figure 3 yes Figure 1 A three-dimensional structural diagram of the turntable assembly in the welding device shown. Figure 4 yes Figure 1 The diagram shows the structure of the feeding assembly in the welding device at one angle. Figure 5 yes Figure 4 The diagram shown is a structural schematic of the feeding assembly from another angle; Figure 6 yes Figure 1 A three-dimensional structural diagram of the rotating component and the moving drive component in the welding device shown. Figure 7 yes Figure 6 An exploded three-dimensional view of the rotating component and the moving drive component shown. Figure 8 yes Figure 1 The diagram shows the structural schematic of the welding components in the welding apparatus.

[0022] Explanation of key component symbols: Welding device 100; battery 300; casing 310; top cover 330; Turntable assembly 10; Turntable 11; First surface 111; Second surface 113; Drive unit 13; Feeding assembly 30; mounting position 301; clamping member 31; first clamping sub-member 311; second clamping sub-member 313; feeding drive member 33; feeding transmission member 35; first transmission arm 351; second transmission arm 353; base 37; first elastic member 391; second elastic member 393; Rotating component 50; welding area 501; rotating drive component 51; rotating transmission component 53; rotating component 55; pressure head 57; loading seat 58; third elastic component 59; Support platform 60; Welding assembly 70; Welding head 71; Alignment frame 73; Detection component 80; Motion drive assembly 90; first bracket 91; guide part 911; motion drive component 93; second bracket 95; mating part 951; First direction: Z; Second direction: X. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0024] In the description of this application, it should be understood that the terms "thickness," "upper," "top," "bottom," "inner," "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly. In one example, they can be a fixed connection, a detachable connection, or an integral connection; they can be a mechanical connection, an electrical connection, or a connection that allows communication between them; they can be a direct connection or an indirect connection through an intermediate medium; they can be the internal connection of two elements or the interaction between two elements.

[0026] In battery manufacturing, a welding device is needed to weld the top cover to the casing. The casing primarily houses the electrode components and electrolyte. The internal components achieve electrochemical reactions by connecting to the positive or negative terminals of the top cover. Typically, during the simultaneous welding of multiple batteries, multiple sets of mating casings and top covers are mounted in a single integral loading assembly on a rotating turntable. Driven by the turntable, they sequentially approach the welding head to complete the welding. However, since each battery lacks an independent adjustment mechanism, the alignment error between the battery and the welding head may accumulate multiple times, leading to welding misalignment. Furthermore, the concentricity of the top cover and casing cannot be compensated for, resulting in poor welding concentricity and affecting the yield rate of the battery top cover insertion welding. To address these issues, this application provides a welding device 100 (please refer to...). Figure 1 and Figure 2 ).

[0027] Please refer to Figures 1 to 3 The welding apparatus 100 provided in this application includes a turntable assembly 10, multiple feeding assemblies 30, a rotating assembly 50, and a welding assembly 70. The turntable assembly 10 includes a turntable 11 and a drive member 13. The drive member 13 is connected to the turntable 11 and is used to drive the turntable 11 to rotate around a rotation axis O. The feeding assemblies 30 are connected to the turntable 11 and are spaced apart around the rotation axis O. The feeding assemblies 30 are used to hold or release batteries 300. The rotating assembly 50 is spaced apart from the turntable 11 in a first direction Z and together forms a welding section 501. The turntable 11 can drive each feeding assembly 30 and the batteries 300 on the feeding assembly 30 to rotate together to the welding section 501. The first direction Z is parallel to the axial direction of the rotation axis O. The welding assembly 70 is opposite to the welding section 501 in a second direction X, which intersects the first direction Z. The welding assembly 70 is used to weld the top cover 330 and the casing 310 of the battery 300 within the welding section 501. The rotating component 50 is used to drive the battery 300 to rotate when the welding component 70 welds the top cover 330 and the housing 310 of the battery 300, so that the welding component 70 can weld different connection positions between the top cover 330 and the housing 310 of the battery 300.

[0028] Specifically, in the above embodiments, the welding device 100 is a processing device used to weld the parts of the components to be welded that need to be connected. Depending on the welding method, welding precision, and weld mark form, the welding device 100 can be used in various application scenarios. For example, in infrastructure construction, the welding device is used to connect metal substrates; in the automotive body assembly process, the welding device is used to weld stamped steel sheets into a body-in-white; in battery 300 processing, the welding device 100 is used to weld the top cover 330 onto the housing 310 to achieve top cover-to-housing welding. This application describes the application scenario of the welding device 100 as welding the top cover 330 onto the housing 310 to achieve top cover-to-housing welding. The battery 300 includes an external housing 310 and a top cover 330, as well as internal components such as a core, current collector, electrode assembly, and electrolyte. The internal structure achieves electrochemical reactions through connection with the positive or negative terminals of the top cover 330. During the production process of battery 300, the top cover 330 needs to be welded to the housing 310 by welding device 100, thereby sealing the internal structure of battery 300 and ensuring the safety of battery 300 in use.

[0029] The turntable assembly 10 is a component in the welding apparatus 100 used to move the batteries 300 to achieve a streamlined welding operation of multiple batteries 300. The turntable 11 has a large surface area, facilitating the installation and support of other functional components in the welding apparatus 100, such as the feeding assembly 30, the rotating assembly 50, and the moving drive assembly 90 (described below). The drive member 13 is a structure in the welding apparatus 100 used to drive the turntable assembly 10 to rotate. The drive member 13 can be, but is not limited to, a servo motor, a stepper motor, or a direct drive motor (DD motor). The turntable 11 is connected to the drive member 13 and rotates around the rotation axis O under the drive of the drive member 13. The connection between the turntable 11 and the drive member 13 can be detachable or non-detachable. Detachable connections include, but are not limited to, one or more combinations of screw connections and snap-fit ​​connections. Non-detachable connections include, but are not limited to, one or more combinations of gluing, welding, and sintering methods. This definition will be used for both detachable and non-detachable connections, and will not be elaborated further.

[0030] The loading assembly 30 is used to transport the battery 300 to be welded to the designated welding area 501 and to position and install the battery 300 in the welding device 100. The loading assembly 30 is mounted on the turntable 11, and the connection between the loading assembly 30 and the turntable 11 can be detachable or non-detachable. With the rotation axis O as a reference, the loading assemblies 30 are distributed around the rotation axis O and spaced apart from each other. During the use of the welding device 100, the loading assemblies 30 are used to clamp the battery 300 for welding, or to release the battery 300 after welding or for other reasons that need to be removed from the welding device 100. It is understood that in this application, each battery 300 to be welded is clamped by a separate loading assembly 30, so the batteries 300 will not interfere with each other, and there will be no accumulation of errors between adjacent batteries 300 being welded sequentially. In this application, the process of installing the battery 300 onto the loading assembly 30 can be done manually or by other automated devices; no limitation is made here.

[0031] The rotating component 50 is a component in the welding apparatus 100 used to rotate the battery 300 clamped on the feeding component 30 for multi-angle welding of the battery 300. In this application, the direction opposite to the turntable 11 of the rotating component 50 is defined as the first direction Z. At this time, the rotating component 50 and the turntable 11 are spaced apart in the first direction Z, and the spatial structure between the rotating component 50 and the turntable 11 is defined as the welding interval 501. The welding interval 501 is the interval used for welding the battery 300. When the feeding component 30 on the turntable 11 clamps the battery 300, and the turntable 11 drives each feeding component 30 and the battery 300 on the feeding component 30 to rotate together into the welding interval 501, the welding apparatus 100 can weld the battery 300 located in the welding apparatus 100. It is understood that the first direction Z is parallel to the rotation axis O. In the first direction Z, the size of the welding interval 501 is larger than the overall size of the feeding assembly 30 and the battery 300 on the feeding assembly 30, so as to ensure that during the rotation of each feeding assembly 30 driven by the turntable 11, each feeding assembly 30 and the battery 300 on the feeding assembly 30 can enter the welding interval 501 smoothly in sequence without interfering with the rotating assembly 50.

[0032] The welding assembly 70 is a component in the welding apparatus 100 used to weld the battery 300 on the loading assembly 30 located in the welding section 501. Specifically, the welding assembly 70 is used to weld the top cover 330 and the casing 310 of the battery 300 together. In this application, the direction opposite to the welding section 501 of the welding assembly 70 is defined as the second direction X, which intersects with the first direction Z. In this embodiment, the second direction X is the radial direction of the circle formed by the rotation of the turntable 11. When the loading assembly 30 on the turntable 11 holds the battery 300, and the turntable 11 drives each loading assembly 30 and the battery 300 on the loading assembly 30 to rotate together to the welding section 501, the welding assembly 70 is opposite to the battery 300 on the loading assembly 30 located in the welding section 501 in the second direction X. The welding assembly 70 can weld at least a portion of the area where the top cover 330 and the casing 310 of the battery 300 are in contact within the welding section 501.

[0033] Furthermore, when the welding assembly 70 welds the top cover 330 and the casing 310 of the battery 300, the rotating assembly 50 drives the battery 300 to rotate, thereby changing the position of the connection point between the top cover 330 and the casing 310 relative to the welding assembly 70. At this time, the welding assembly 70 can weld different connection points between the top cover 330 and the casing 310 in the battery 300, thus achieving welding of all connection areas between the top cover 330 and the casing 310, thereby completing the sealing of the internal structure of the battery 300 and ensuring the safe use of the battery 300. In some embodiments, the process of the rotating assembly 50 driving the battery 300 to rotate is performed simultaneously with the welding process of the battery 300; in other embodiments, the process of the rotating assembly 50 driving the battery 300 to rotate is performed alternately with the welding process of the battery 300. This application does not impose any limitations on this.

[0034] In the welding apparatus 100 of this embodiment, multiple loading assemblies 30 are connected to a turntable 11. When the drive member 13 drives the turntable 11 to rotate around the rotation axis O, the multiple loading assemblies 300 and the clamped battery 300 can rotate together under the drive of the turntable 11 to the welding zone 501. At this time, the welding assembly 70 can weld at least a portion of the area where the top cover 330 and the housing 310 of the battery 300 are in contact within the welding zone 501. Further, the rotation assembly 50 drives the battery 300 to rotate, and the welding assembly 70 welds different contact positions between the top cover 330 and the housing 310 to complete the top cover insertion welding of the battery 300. Because multiple feeding components 30 are provided, the relative positions of different batteries 300 and welding components 70 can be adjusted independently. The matching error between the battery 300 and the welding head 71 in the welding component 70 will not accumulate, so that the welding between the top cover 330 of the battery 300 and the housing 310 will not be offset. Moreover, the rotating component 50 can drive the battery 300 to rotate for welding. The concentricity between the top cover 330 and the housing 310 can be compensated. The welding concentricity between the top cover 330 and the housing 310 of the battery 300 is good, and the yield of the top cover of the battery 300 entering the housing for welding is high.

[0035] Please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments, the turntable 11 includes a first surface 111 and a second surface 113 facing away from each other in the first direction Z. The feeding assembly 30 includes a clamping member 31, a feeding drive member 33, and a feeding transmission member 35. The clamping member 31 is disposed on the side where the first surface 111 is located. The feeding drive member 33 is disposed on the side where the second surface 113 is located, and the feeding drive member 33 is used to output feeding driving force. The feeding transmission member 35 passes through the turntable 11, with one end of the feeding transmission member 35 connected to the clamping member 31 and the other end spaced apart from the feeding drive member 33. The rotation of the turntable 11 causes the clamping member 31 and the feeding transmission member 35 to rotate together relative to the feeding drive member 33, so that the feeding transmission member 35 can be aligned with the feeding drive member 33 in the first direction Z. When the feeding drive 33 approaches the feeding transmission 35 aligned with it along the first direction Z and applies a feeding driving force to the feeding transmission 35, the feeding transmission 35 drives the clamping member 31 to open to release the battery 300; when the feeding drive 33 moves away from the feeding transmission 35 aligned with it along the first direction Z and releases the feeding driving force applied to the feeding transmission 35, the feeding transmission 35 drives the clamping member 31 to close to clamp the battery 300.

[0036] Specifically, in the first direction Z, the turntable 11 includes a first surface 111 for mounting functional components such as the loading assembly 30, the rotating assembly 50, and the moving drive assembly 90, and a second surface 113 opposite to the first surface 111. The clamping member 31 is a specific component in the loading assembly 30 used to clamp or release the battery 300. The clamping member 31 is located on the side where the first surface 111 is located. The clamping member 31 can be directly connected to the first surface 111 of the turntable 11, or indirectly connected to the first surface 111 of the turntable 11 through other structures (such as the base 37 mentioned below). The loading drive member 33 is a structure in the loading assembly 30 used to provide power for the clamping or releasing of the clamping member 31. The loading drive member 33 is located on the side where the second surface 113 is located. In some embodiments, the loading drive member 33 is connected to the second surface 113 of the turntable 11 through a connecting structure. In other embodiments, the loading drive member 33 is mounted on a mounting bracket and faces the second surface 113. In some other embodiments, the feeding drive 33 is placed on the bearing surface of the bearing welding device 100 and is opposite to the second surface 113.

[0037] The feeding transmission member 35 is a structure in the feeding assembly 30 used to transmit the driving force provided by the feeding drive member 33 to the clamping member 31. The feeding transmission member 35 passes through the turntable 11 in the first direction Z. At this time, one end of the feeding transmission member 35 is connected to the clamping member 31 located on the side of the first surface 111, and the other end of the feeding transmission member 35 is spaced apart from the feeding drive member 33 located on the side of the second surface 113. In the multiple feeding assemblies 30, when the turntable 11 rotates, causing the clamping member 31 and the feeding transmission member 35 in each feeding assembly 30 to rotate, the clamping member 31 and the feeding transmission member 35 in each feeding assembly 30 rotate together relative to the feeding drive member 33. In some embodiments, the feeding drive member 33 is also driven by the turntable 11. At this time, the feeding transmission member 35 in each feeding assembly 30 is aligned with the feeding drive member 33 in the same feeding assembly 30 in the first direction Z. In some other embodiments, the feeding drive 33 is not driven by the turntable 11. In this case, the feeding transmission 35 in each feeding assembly 30 is aligned with the feeding drive 33 in the different feeding assemblies 30 in the first direction Z.

[0038] When the feeding drive 33 is aligned with a feeding transmission 35 in the first direction Z, the feeding drive 33 can approach the aligned feeding transmission 35 along the first direction Z and apply a feeding driving force to the feeding transmission 35. Under the drive of the feeding driving force, the feeding transmission 35 drives the clamping member 31 to open and release at least a portion of the battery 300 to release the battery 300. The feeding drive 33 can also move away from the aligned feeding transmission 35 along the first direction Z and release the feeding driving force applied to the feeding transmission 35. When the feeding transmission 35 is not subjected to the feeding driving force, it drives the clamping member 31 to close and abut against at least a portion of the battery 300 to clamp the battery 300.

[0039] Therefore, in the welding apparatus 100 of this application, when the feeding drive 33 applies a feeding driving force to the feeding transmission 35, the feeding transmission 35 drives the clamping member 31 to open to release the battery 300; when the feeding drive 33 releases the applied feeding driving force to the feeding transmission 35, the feeding transmission 35 drives the clamping member 31 to close to clamp the battery 300. Each feeding assembly 30 can flexibly and independently clamp and release the battery 300. The relative positions of different batteries 300 and welding assembly 70 can be adjusted independently. The matching error between the battery 300 and the welding head 71 in the welding assembly 70 will not accumulate, the welding will not be offset, the welding concentricity of the top cover 330 and the shell 310 is good, and the yield of battery 300 welding is high.

[0040] Please refer to Figure 1 , Figure 4 and Figure 5In some embodiments, the feeding transmission member 35 includes a first transmission arm 351 and a second transmission arm 353. The first transmission arm 351 has two opposite ends in the length direction, and the second transmission arm 353 has two opposite ends in the length direction. The end of the first transmission arm 351 near the feeding drive member 33 is hinged to the end of the second transmission arm 353 near the feeding drive member 33. The clamping member 31 includes a first clamping sub-member 311 and a second clamping sub-member 313. The end of the first transmission arm 351 away from the feeding drive member 33 is connected to the first clamping sub-member 311, and the end of the second transmission arm 353 away from the feeding drive member 33 is connected to the second clamping sub-member 313. When the feeding drive 33 moves closer to the feeding transmission 35 along the first direction Z and applies a feeding driving force to the feeding transmission 35, the first transmission arm 351 and the second transmission arm 353 move away from each other, and the first clamping sub-part 311 and the second clamping sub-part 313 move away from each other to release the battery 300; when the feeding drive 33 moves away from the feeding transmission 35 along the first direction Z and releases the feeding driving force applied to the feeding transmission 35, the first transmission arm 351 and the second transmission arm 353 move closer to each other, and the first clamping sub-part 311 and the second clamping sub-part 313 move closer to each other to clamp the battery 300.

[0041] Specifically, the first transmission arm 351 and the second transmission arm 353 are structures in the feeding transmission component 35 that can cooperate with each other to transmit the feeding driving force provided by the feeding drive component 33 to the clamping component 31. Both the first transmission arm 351 and the second transmission arm 353 pass through the turntable 11 to achieve force transmission over a greater distance between the side where the first surface 111 of the turntable 11 is located and the side where the second surface 113 is located. Moreover, the first transmission arm 351 and the second transmission arm 353 have the same length. At this time, the feeding driving force is well consistent through the transmission process of the first transmission arm 351 and the second transmission arm 353, that is, the feeding driving force received by the first transmission arm 351 is equal in magnitude and corresponds in direction to each other.

[0042] The first clamping sub-component 311 and the second clamping sub-component 313 are structures in the clamping member 31 that can cooperate with each other to clamp and release the battery 300. The first transmission arm 351 and the second transmission arm 353 each have two opposite ends in the length direction. The end of the first transmission arm 351 near the loading drive member 33 is hinged to the end of the second transmission arm 353 near the loading drive member 33, so that the first transmission arm 351 and the second transmission arm 353 can be rotatably connected. The end of the first transmission arm 351 away from the loading drive member 33 is connected to the first clamping sub-component 311. The connection between the first transmission arm 351 and the first clamping sub-component 311 can be a detachable connection or a non-detachable connection. The end of the second transmission arm 353 away from the loading drive member 33 is connected to the second clamping sub-component 313. The connection between the second transmission arm 353 and the second clamping sub-component 313 can be a detachable connection or a non-detachable connection.

[0043] When the feeding drive 33 is aligned with a certain feeding transmission 35 in the first direction Z, the feeding drive 33 can approach the aligned feeding transmission 35 along the first direction Z and apply a feeding driving force to the feeding transmission 35. The first transmission arm 351 and the second transmission arm 353 move away from each other under the driving force of the feeding driving force, and respectively drive the first clamping sub-part 311 and the second clamping sub-part 313 to move away from each other. The first clamping sub-part 311 and the second clamping sub-part 313 release at least part of the contact with the battery 300 to release the battery 300. The feeding drive 33 can also move away from the feeding transmission 35 aligned with it along the first direction Z and release the feeding driving force applied to the feeding transmission 35. When the first transmission arm 351 and the second transmission arm 353 are not subjected to the feeding driving force, they move closer to each other and respectively drive the first clamping sub-part 311 and the second clamping sub-part 313 to move closer to each other. The first clamping sub-part 311 and the second clamping sub-part 313 abut against at least part of the battery 300 to clamp the battery 300.

[0044] Therefore, in the welding apparatus 100 of this application, when the feeding drive member 33 applies a feeding driving force to the feeding transmission member 35, the first transmission arm 351 and the second transmission arm 353 drive the first clamping sub-member 311 and the second clamping sub-member 313 to move away from each other to release the battery 300; when the feeding drive member 33 releases the applied feeding driving force to the feeding transmission member 35, the first transmission arm 351 and the second transmission arm 353 drive the first clamping sub-member 311 and the second clamping sub-member 313 to move closer to each other to clamp the battery 300. Each set of feeding components 30 can flexibly and independently realize the clamping and release of the battery 300, and since the distance between the first transmission arm 351 and the second transmission arm 353 is the same, the force conditions of the first clamping sub-member 311 and the second clamping sub-member 313 during the driving process are consistent. At this time, the relative positions of different batteries 300 and welding components 70 can be adjusted independently and stably. The matching error of the welding head 71 in the battery 300 and welding components 70 will not accumulate, the welding will not shift, the welding concentricity of the top cover 330 and the battery 300 housing 310 is better, and the yield of battery 300 welding is high.

[0045] Please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments, the feeding assembly 30 further includes a base 37, a first elastic member 391, and a second elastic member 393. The base 37 is disposed on the first surface 111, and the clamping member 31 is mounted on the base 37. The two ends of the first elastic member 391 are respectively connected to the first clamping member 311 and the base 37, and the first elastic member 391 provides an elastic restoring force when the first clamping member 311 approaches the second clamping member 313. The two ends of the second elastic member 393 are respectively connected to the second clamping member 313 and the base 37, and the second elastic member 393 provides an elastic restoring force when the second clamping member 313 approaches the first clamping member 311.

[0046] Specifically, the base 37 is a structure in the feeding assembly 30 used to mount the clamping member 31. The base 37 is disposed on the first surface 111, and the connection between the base 37 and the turntable 11 can be a detachable connection or a non-detachable connection. The first clamping member 311 and the second clamping member 313 are movably connected to the base 37 so that the first clamping member 311 and the second clamping member 313 can move relative to the base 37 and the turntable 11 under the drive of the first transmission arm 351 and the second transmission arm 353, and move away from or closer to each other.

[0047] The first elastic element 391 is a device used to provide elastic restoring force to the first clamping sub-part 311 as it approaches the second clamping sub-part 313. The first elastic element 391 can be, but is not limited to, a combination of one or more springs, leaf springs, and rubber elastic elements. When the first elastic element 391 is a spring, it has the advantages of simple structure and low cost. When the first elastic element 391 is a leaf spring, it has the advantage of high load-bearing capacity. When the first elastic element 391 is a rubber elastic element, it has the advantages of wear resistance and corrosion resistance. One end of the first elastic element 391 is connected to the first clamping sub-part 311, and the other end is connected to the base 37. The presence of the base 37 makes the installation of the first elastic element 391 easier. The connection between the first elastic element 391 and the first clamping sub-part 311 can be an abutment connection or a fixed connection. When the first elastic element 391 and the first clamping sub-part 311 are fixedly connected, the connection method can be a detachable connection or a non-detachable connection. The connection between the first elastic member 391 and the base 37 can be an abutment connection or a fixed connection. When the first elastic member 391 is fixedly connected to the base 37, the connection method between the first elastic member 391 and the base 37 can be a detachable connection or a non-detachable connection. When the feeding drive member 33 releases the feeding drive force applied to the feeding transmission member 35, since the first elastic member 391 provides an elastic restoring force for the first clamping sub-member 311, the first clamping sub-member 311 can move closer to the second clamping sub-member 313 to clamp the battery 300.

[0048] The second elastic element 393 is a device used to provide an elastic restoring force to the second clamping sub-part 313 when it approaches the second clamping sub-part 313. The second elastic element 393 can be, but is not limited to, a combination of one or more springs, leaf springs, and rubber elastic elements. When the second elastic element 393 is a spring, it has the advantages of simple structure and low cost. When the second elastic element 393 is a leaf spring, it has the advantage of high load-bearing capacity. When the second elastic element 393 is a rubber elastic element, it has the advantages of wear resistance and corrosion resistance. One end of the second elastic element 393 is connected to the second clamping sub-part 313, and the other end is connected to the base 37. The presence of the base 37 makes the installation of the second elastic element 393 easier. The connection between the second elastic element 393 and the second clamping sub-part 313 can be an abutment connection or a fixed connection. When the second elastic element 393 and the second clamping sub-part 313 are fixedly connected, the connection method can be a detachable connection or a non-detachable connection. The connection between the second elastic member 393 and the base 37 can be an abutment connection or a fixed connection. When the second elastic member 393 is fixedly connected to the base 37, the connection method between the second elastic member 393 and the base 37 can be a detachable connection or a non-detachable connection. When the feeding drive member 33 releases the feeding drive force applied to the feeding transmission member 35, since the second elastic member 393 provides an elastic restoring force for the second clamping sub-member 313, the second clamping sub-member 313 can move closer to the first clamping sub-member 311 to clamp the battery 300.

[0049] Therefore, in the welding apparatus 100 of this application, when the feeding drive 33 releases the feeding drive force applied to the feeding transmission 35, the first transmission arm 351 and the second transmission arm 353 drive the first clamping sub-component 311 and the second clamping sub-component 313 to move closer to each other. At the same time, the first elastic member 391 provides elastic restoring force to the first clamping sub-component 311, and the second elastic member 393 provides elastic restoring force to the second clamping sub-component 313, so that the first clamping sub-component 311 and the second clamping sub-component 313 clamp the battery 300 more quickly and stably. Each feeding assembly 30 can quickly and stably achieve an independent clamping process for the battery 300. At this time, the relative positions of different batteries 300 and welding assemblies 70 can be adjusted independently and stably. The matching error of the battery 300 and the welding head 71 in the welding assembly 70 will not accumulate, the welding will not shift, the welding concentricity of the top cover 330 and the shell 310 is better, and the yield of battery 300 welding is high.

[0050] Please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments, the feeding drive 33 is a telescopic cylinder or a linear motor, and can move along the first direction Z.

[0051] Specifically, when the feeding drive 33 is a telescopic cylinder, the telescopic rod of the feeding drive 33 can extend and retract along the first direction Z to approach or move away from the feeding transmission member 35. When the telescopic rod of the feeding drive 33 extends along the first direction Z to approach the feeding transmission member 35 aligned with it and applies a feeding driving force to the feeding transmission member 35, the first transmission arm 351 and the second transmission arm 353 move away from each other under the driving force of the feeding driving force, and respectively drive the first clamping sub-member 311 and the second clamping sub-member 313 to move away from each other. The first clamping sub-member 311 and the second clamping sub-member 313 release at least part of the contact with the battery 300 to release the battery 300. When the telescopic rod of the feeding drive 33 retracts along the first direction Z to move away from the feeding transmission 35 aligned with it, and the feeding driving force applied to the feeding transmission 35 is released, the first transmission arm 351 and the second transmission arm 353 are not subjected to the feeding driving force and move closer to each other, so as to drive the first clamping sub-part 311 and the second clamping sub-part 313 to move closer to each other, and the first clamping sub-part 311 and the second clamping sub-part 313 abut against at least part of the battery 300 to clamp the battery 300.

[0052] When the feeding drive 33 is a linear motor, the motor shaft of the feeding drive 33 can extend and retract along the first direction Z to approach or move away from the feeding transmission member 35. When the motor shaft of the feeding drive 33 extends along the first direction Z to approach the feeding transmission member 35 aligned with it and applies a feeding driving force to the feeding transmission member 35, the first transmission arm 351 and the second transmission arm 353 move away from each other under the driving force of the feeding driving force, and respectively drive the first clamping sub-member 311 and the second clamping sub-member 313 to move away from each other. The first clamping sub-member 311 and the second clamping sub-member 313 release at least part of the contact with the battery 300 to release the battery 300. When the motor shaft of the feeding drive 33 retracts along the first direction Z to move away from the feeding transmission 35 aligned with it, and the feeding driving force applied to the feeding transmission 35 is released, the first transmission arm 351 and the second transmission arm 353 are not subjected to the feeding driving force and move closer to each other, thereby driving the first clamping sub-part 311 and the second clamping sub-part 313 to move closer to each other, and the first clamping sub-part 311 and the second clamping sub-part 313 abut against at least a portion of the battery 300 to clamp the battery 300. At this time, the process of the feeding drive 33 applying the feeding driving force to the feeding transmission 35 is simple and easy to control, and the welding device 100 can be better automated.

[0053] Please refer to Figure 1 , Figure 4 and Figure 5In some embodiments, the first transmission arm 351 and the second transmission arm 353 are symmetrical about an axis parallel to the first direction Z, and the first clamping member 311 and the second clamping member 313 are symmetrical about an axis perpendicular to the first direction Z.

[0054] Specifically, the end of the first transmission arm 351 near the loading drive member 33 is hinged to the end of the second transmission arm 353 near the loading drive member 33, with the axis L passing through the hinge point and parallel to the first direction Z as the reference line, such as... Figure 4 and Figure 5 As shown, the first transmission arm 351 and the second transmission arm 353 are symmetrical about the axis L. Taking the axis P perpendicular to the first direction Z as the reference line, the first clamping sub-component 311 and the second clamping sub-component 313 are symmetrical about the axis P. At this time, during the process of the feeding drive 33 transmitting the feeding drive force to the first transmission arm 351 and the second transmission arm 353, the feeding drive force received by the first transmission arm 351 is equal in magnitude to the feeding drive force received by the second transmission arm 353, and their directions are symmetrical about the axis L. Furthermore, the displacement by which the first transmission arm 351 drives the first clamping sub-component 311 to move is the same as the displacement by which the second transmission arm 353 drives the second clamping sub-component 313 to move, and the direction of movement of the first clamping sub-component 311 is opposite to the direction of movement of the second clamping sub-component 313.

[0055] Therefore, in the welding apparatus 100 of this application, since the first transmission arm 351 and the second transmission arm 353 are symmetrical about axis L, and the first clamping member 311 and the second clamping member 313 are symmetrical about axis P, the force and movement of the first clamping member 311 and the second clamping member 313 during the driving process are well consistent. At this time, the relative positions of different batteries 300 and welding assembly 70 can be adjusted independently and stably, the matching error of the battery 300 and the welding head 71 in the welding assembly 70 will not accumulate, the welding will not be offset, the concentricity of the welding of the top cover 330 and the shell 310 is better, and the yield of battery 300 welding is high.

[0056] Please refer to Figure 1 , Figure 6 and Figure 7In some embodiments, the welding apparatus 100 further includes a support platform 60 and a moving drive assembly 90, the support platform 60 being located above the turntable 11. The moving drive assembly 90 is disposed on the support platform 60 and is used to drive the rotating assembly 50 to move relative to the support platform 60 in a first direction Z. The rotating assembly 50 includes a rotating drive member 51, a rotating transmission member 53, a rotating member 55, and a pressure head 57. The rotating drive member 51 is connected to the support platform 60 and is used to output a rotating driving force. The rotating transmission member 53 is connected to the rotating drive member 51 and is used to transmit the rotating driving force output by the rotating drive member 51. The rotating member 55 is connected to the rotating drive member 51 and is used to rotate about an axis parallel to the first direction Z under the drive of the rotating driving force transmitted by the rotating transmission member 53. The pressure head 57 is connected to the rotating member 55. When the turntable 11 drives the feeding assembly 30 and the battery 300 on the feeding assembly 30 to rotate together to the welding area 501, the moving drive assembly 90 drives the rotating assembly 50 to move relative to the support table 60 in the first direction Z and drives the rotating member 55 and the pressure head 57 to approach the battery 300, so that the pressure head 57 abuts against the top cover 330 of the battery 300. The rotating drive assembly 51 is used to drive the rotating member 55 to rotate via the rotating transmission assembly 53, and transmits the rotation to the battery 300 through the pressure head 57, so as to drive the battery 300 to rotate.

[0057] Specifically, the support platform 60 is a structure used to support the motion drive assembly 90. The support platform 60 is positioned above the turntable 11 and spaced apart from the turntable 11 in the first direction Z. The motion drive assembly 90 is a component used to drive the rotating assembly 50 to move relative to the support platform 60 in the first direction Z, thereby changing the distance between the rotating assembly 50 and the turntable 11. The motion drive assembly 90 is connected to both the support platform 60 and the rotating assembly 50. The connection between the motion drive assembly 90 and the support platform 60 can be detachable or non-detachable; similarly, the connection between the motion drive assembly 90 and the rotating assembly 50 can also be detachable or non-detachable.

[0058] The rotary drive component 51 is a structure in the rotary assembly 50 used to output rotary driving force to drive the battery 300 to rotate. The rotary drive component 51 is connected to the support platform 60; the connection can be detachable or non-detachable. In this case, the rotary drive component 51 can stably output rotary driving force through its connection with the support platform 60. The rotary transmission component 53 is a structure in the rotary assembly 50 used to transmit the rotary driving force provided by the rotary drive component 51 to the rotating component 55. The rotating component 55 is a structure in the rotary assembly 50 used to transmit the driving force of the rotary drive component 51. The rotary transmission component 53 is connected to both the rotary drive component 51 and the rotating component 55. When the rotary drive component 51 outputs rotary driving force, the rotary transmission component 53 transmits the rotary driving force output by the rotary drive component 51 to the rotating component 55. At this time, the rotating component 55 rotates around the axis H parallel to the first direction Z under the drive of the rotary driving force. Please refer to [reference needed]. Figure 6 The presence of the rotary transmission component 53 allows the process of transmitting the rotary driving force to the rotating component 55 to proceed more stably, and the position of the rotary drive component 51 can be set more flexibly.

[0059] The pressure head 57 is a structure in the rotating assembly 50 that abuts against the top cover 330 to transmit the rotation of the rotating member 55 to the battery 300 and drive the battery 300 to rotate. The pressure head 57 is fixedly connected to the end of the rotating member 55 away from the rotating drive member 51, and the two rotate together while remaining relatively stationary. When the rotating drive member 51 outputs a rotational driving force, the rotating transmission member 53 transmits the rotational driving force to the rotating member 55 and the pressure head 57, and the pressure head 57 rotates around the axis H parallel to the first direction Z under the drive of the rotational driving force. It can be understood that the size and shape of the pressure head 57 are respectively matched with the size and shape of the battery 300, especially the top cover 330.

[0060] When the turntable 11 drives the feeding assembly 30 and the battery 300 on the feeding assembly 30 to rotate together, so that the battery 300 enters the welding zone 501 and aligns with the welding assembly 70, the rotating assembly 50 moves relative to the support platform 60 in the first direction Z under the drive of the moving drive assembly 90, specifically moving towards the turntable 11 and approaching the battery 300 located on the feeding assembly 30. The pressure head 57 abuts against the top cover 330 of the battery 300, so that the pressure head 57 can drive the battery 300 to move (rotate) through the top cover 330. The rotational driving force output by the rotating drive 51 is transmitted to the rotating member 55 through the rotating transmission member 53, so that the pressure head 57 and the battery 300 can rotate through the rotating member 55. Therefore, the welding assembly 70 can weld the different contact positions between the top cover 330 and the housing 310, thereby achieving welding of all connection areas between the top cover 330 and the housing 310, and thus completing the sealing of the internal structure of the battery 300, ensuring the safety of the battery 300 in use.

[0061] Please refer to Figure 1 , Figure 6 and Figure 7 In some embodiments, the rotating assembly 50 further includes a loading seat 58 and a third elastic member 59. The pressure head 57 is fixedly connected to the rotating member 55, and the rotating member 55 passes through the loading seat 58 and the rotation transmission member 53. The two ends of the third elastic member 59 are respectively connected to the loading seat 58 and the pressure head 57.

[0062] Specifically, the loading seat 58 is a structure for mounting components such as the rotary drive component 51, the rotary transmission component 53, the rotating component 55, and the pressure head 57. The loading seat 58 is connected to the second bracket 95. The loading seat 58 and the second bracket 95 can be an integral structure or a separate structure. When the loading seat 58 and the second bracket 95 are separate structures, they can be detachably connected or non-detachably connected.

[0063] In some embodiments, the rotating member 55 is fixedly connected to the pressure head 57, and the rotating member 55 and the pressure head 57 together can move relative to the loading seat 58 in the first direction Z. The third elastic member 59 is a device used to limit the travel of the rotating member 55 and the pressure head 57 together in a direction closer to the loading seat 58, and to provide an elastic restoring force to release the pressure head 57 from contact with the battery 300. The third elastic member 59 may be, but is not limited to, a combination of one or more springs, leaf springs, and rubber elastic members. When the third elastic member 59 is a spring, it has the advantages of simple structure and low cost. When the third elastic member 59 is a leaf spring, it has the advantage of high load-bearing capacity. When the third elastic member 59 is a rubber elastic member, it has the advantages of wear resistance and corrosion resistance.

[0064] One end of the third elastic element 59 is connected to the loading seat 58, and the other end is connected to the pressure head 57. The connection between the third elastic element 59 and the rotating element 55 can be an abutment connection or a fixed connection. When the third elastic element 59 is fixedly connected to the loading seat 58, the connection between the third elastic element 59 and the loading seat 58 can be a detachable connection or a non-detachable connection. The connection between the third elastic element 59 and the pressure head 57 can be an abutment connection or a fixed connection. When the third elastic element 59 is fixedly connected to the pressure head 57, the connection between the third elastic element 59 and the pressure head 57 can be a detachable connection or a non-detachable connection. When the pressure head 57 is no longer in contact with the battery 300, because the third elastic element 59 provides elastic restoring force to the pressure head 57, the pressure head 57 can move relative to the loading seat 58 in the first direction Z and reset.

[0065] When the pressure head 57 is not in contact with the battery 300, the third elastic member 59 has a first length. When the pressure head 57 comes into contact with the battery 300, the rotating member 55 and the pressure head 57 move together toward the loading seat 58. The third elastic member 59 is compressed and has a second length. The third elastic member 59 can limit the travel distance of the rotating member 55 and the pressure head 57 moving together toward the loading seat 58, preventing the pressure head 57 from being pushed into contact with the loading seat 58 and causing a hard contact with the battery 300. Instead, it makes a soft contact between the pressure head 57 and the battery 300, protecting the battery 300 from damage. During the process of releasing the pressure head 57 from contact with the battery 300, the rotating assembly 50 provides elastic restoring force for the pressure head 57 to reset relative to the loading seat 58 through the third elastic member 59.

[0066] Please refer to Figure 1 , Figure 6 and Figure 7 In some embodiments, the rotary drive 51 is a rotary motor. Specifically, when the rotary drive 51 is a rotary motor, the rotary drive 51 can stably output rotary driving force, which is transmitted to the rotating member 55 via the rotary transmission member 53, thereby driving the pressure head 57 and the battery 300 to rotate. In this case, the process of the rotary drive 51 outputting rotary driving force is simple and easy to control, and the welding device 100 can be well automated.

[0067] Please refer to Figure 1 , Figure 6 and Figure 7 In some embodiments, the motion drive assembly 90 includes a first bracket 91, a motion drive member 93, and a second bracket 95. The first bracket 91 is disposed on the support platform 60. The motion drive member 93 is mounted on the first bracket 91 and extends beyond the support platform 60 in a direction perpendicular to the first direction Z. The second bracket 95 is connected to the motion drive member 93 and extends beyond the support platform 60 in a direction perpendicular to the first direction Z. A rotating assembly 50 is mounted on the second bracket 95, and the motion drive member 93 drives the second bracket 95 and the rotating assembly 50 mounted on the second bracket 95 to move together along the first direction Z.

[0068] Specifically, the first support 91 is a structure in the motion drive assembly 90 used to connect the motion drive member 93 to the support platform 60. The first support 91 is connected to the support platform 60 so that the first support 91, the motion drive member 93 directly or indirectly connected to the first support 91, the second support 95, and the rotating assembly 50 can be stably mounted on the support platform 60. The motion drive member 93 is a structure in the motion drive assembly 90 used to provide power for the movement of the second support 95 and the rotating assembly 50 in the first direction Z. The motion drive member 93 is positioned on the first support 91, and in the direction perpendicular to the first direction Z (in one example, the second direction X), at least a portion of the motion drive member 93 extends beyond the support platform 60. At this time, the portion of the motion drive member 93 extending beyond the support platform 60 will not collide with the support platform 60 when moving in the first direction Z.

[0069] The second bracket 95 is a structure in the motion drive assembly 90 used for connection with the rotating assembly 50. The second bracket 95 is connected to the motion drive member 93, specifically to the portion of the motion drive member 93 that extends beyond the support platform 60. At this time, in the direction perpendicular to the first direction Z, at least a portion of the second bracket 95 extends beyond the support platform 60, and when the second bracket 95 moves in the first direction Z, the portion extending beyond the support platform 60 will not collide with the support platform 60. The rotating assembly 50 is connected to the second bracket 95. When the motion drive member 93 drives the second bracket 95 to move in the first direction Z and approach the turntable 11, the rotating assembly 50 can be driven by the second bracket 95 to move together with the second bracket 95 in the first direction Z to approach the battery 300 located on the loading assembly 30 for subsequent welding operations.

[0070] Therefore, in the welding apparatus 100 of this application, the moving drive component 93 is mounted on the support platform 60 via the first bracket 91. When the moving drive component 93 drives the second bracket 95 to move in the first direction Z and approach the turntable 11, the rotating component 50 approaches the battery 300 under the drive of the second bracket 95 to perform subsequent welding operations. At this time, the relative position of the rotating component 50 and the top cover 330 can be precisely controlled by the moving drive component 90, the pressure head 57 can be more tightly combined with the top cover 330, and the pressure head 57 can more stably drive the battery 300 to rotate. Therefore, the welding component 70 can accurately and stably weld the different connection positions between the top cover 330 and the housing 310. The welding of all connection areas between the top cover 330 and the housing 310 can be accurately completed without deviation, and the safety of the battery 300 is better.

[0071] Please refer to Figure 1 , Figure 6 and Figure 7In some embodiments, the moving drive 93 is a telescopic cylinder or a linear motor, and is capable of moving along the first direction Z.

[0072] Specifically, when the moving drive 93 is a telescopic cylinder, the telescopic rod of the moving drive 93 can extend and retract along the first direction Z to approach or move away from the loading transmission member 35. When the telescopic rod of the moving drive 93 extends along the first direction Z, the rotating assembly 50, driven by the second bracket 95, approaches the battery 300 located on the loading assembly 30 for subsequent welding operations. When the telescopic rod of the moving drive 93 retracts along the first direction Z, the rotating assembly 50, driven by the second bracket 95, moves away from the battery 300 so that it can continue to cooperate with the next battery 300 on the next loading assembly 30 in the next welding operation.

[0073] When the moving drive 93 is a linear motor, its drive shaft can extend and retract along the first direction Z to approach or move away from the loading transmission member 35. When the drive shaft of the moving drive 93 extends along the first direction Z to approach the turntable 11, the rotating component 50, driven by the second bracket 95, approaches the battery 300 located on the loading component 30 for subsequent welding operations. When the drive shaft of the moving drive 93 retracts along the first direction Z to move away from the turntable 11, the rotating component 50, driven by the second bracket 95, moves away from the battery 300 to continue cooperating with the battery 300 on the next set of loading components 30 in the next welding operation. At this time, the process of the moving drive 93 controlling the relative distance between the rotating component 50 and the battery 300 in the first direction Z is simple and easy to control, and the welding device 100 can be well automated.

[0074] Please refer to Figure 1 , Figure 6 and Figure 7 In some embodiments, the first bracket 91 is provided with a guide portion 911 extending along the first direction Z, and the second bracket 95 is provided with a mating portion 951 extending along the first direction Z. The guide portion 911 and the mating portion 951 cooperate to guide the second bracket 95 to move along the first direction Z.

[0075] Specifically, the guide portion 911 is a structure on the first bracket 91 that engages with the second bracket 95 to guide the second bracket 95 to move along the first direction Z; the mating portion 951 is a structure on the second bracket 95 that engages with the first bracket 91 to enable the second bracket 95 to move stably relative to the first bracket 91 along the first direction Z. The extension direction of the guide portion 911 is the first direction Z, and the extension direction of the mating portion 951 is also the first direction Z, and the guide portion 911 and the mating portion 951 can engage with each other.

[0076] In some examples, the guide portion 911 is a guide rail, and the mating portion 951 is a guide rail groove. When at least a portion of the guide rail is received in the guide rail groove and the guide rail moves within the guide rail groove, the guide portion 911 and the mating portion 951 cooperate to guide the second bracket 95 to move along the first direction Z. In other examples, the mating portion 951 is a guide rail, and the guide portion 911 is a guide rail groove. When at least a portion of the guide rail is received in the guide rail groove and the guide rail moves within the guide rail groove, the guide portion 911 and the mating portion 951 cooperate to guide the second bracket 95 to move along the first direction Z.

[0077] Therefore, with the guide part 911 and the mating part 951 cooperating with each other, the process of the moving drive member 93 driving the second bracket 95 to move in the first direction Z can be carried out stably, and the displacement of the second bracket 95 can be controlled more precisely. Therefore, the relative position of the rotating component 50 connected to the second bracket 95 and the top cover 330 can also be controlled more precisely. The pressure head 57 can be more tightly connected to the top cover 330, and the pressure head 57 can drive the battery 300 to rotate more stably. Therefore, the welding component 70 can accurately and stably weld the different connection positions between the top cover 330 and the housing 310. The welding of all connection areas between the top cover 330 and the housing 310 can be completed accurately without deviation, and the safety of the battery 300 is better.

[0078] Please refer to Figure 1 , Figure 2 and Figure 8 In some embodiments, the welding assembly 70 includes a welding head 71 and an alignment holder 73. The welding head 71 is used to emit a laser to weld the battery 300, and the radiation area of ​​the laser emitted by the welding head 71 on the battery 300 covers the contact area between the top cover 330 and the housing 310 in the battery 300. The alignment holder 73 is used to fix and mount the welding head 71.

[0079] Specifically, this application uses the welding assembly 70 to connect the top cover 330 and the housing 310 via laser welding as an example. The welding head 71 is a structure in the welding assembly 70 used to emit a high-energy laser capable of welding. The welding head 71 includes at least a laser generator (not shown), in which case the high-energy laser emitted by the welding head 71 can weld the battery 300. The laser emitted by the welding head 71 is aligned with at least a portion of the battery 300 in the second direction X, and the radiation area of ​​the laser on the battery 300 covers the contact position between the top cover 330 and the housing 310 in the battery 300. Therefore, the laser can weld the top cover 330 and the housing 310 together at the contact position within the radiation area.

[0080] The alignment frame 73 is a structure in the welding assembly 70 used to fix and mount the welding head 71, and to adjust the radiation area of ​​the laser emitted by the welding head 71 on the battery 300. The alignment frame 73 is connected to the welding head 71, and the position and direction of the laser emitted by the welding head 71 can be changed by adjusting the position and relative angle of the welding head 71 on the alignment frame 73.

[0081] In some examples, the position of the welding head 71 relative to the alignment frame 73 in the first direction Z is adjustable to change the relative position of the welding head 71 to the welding section 501 in the first direction Z. In this case, the radiation area of ​​the laser emitted by the welding head 71 on the battery 300 can be adjusted in the first direction Z. When the welding head 71 cooperates with the motion drive assembly 90, the radiation area can accurately cover the contact area between the top cover 330 and the housing 310, and the welding head 71 can stably weld the top cover 330 and the housing 310 together. Therefore, the welding of the entire connection area between the top cover 330 and the housing 310 can be completed accurately without misalignment, the internal structure of the battery 300 can be better sealed, and the safety of the battery 300 is improved.

[0082] In other examples, the welding head 71 can rotate relative to the alignment frame 73 about an axis parallel to the second direction X, thereby changing the radiation area of ​​the welding head 71. In this case, the radiation area of ​​the laser emitted by the welding head 71 on the battery 300 can be adjusted about an axis parallel to the second direction X. When the welding head 71 cooperates with the movement drive assembly 90, the radiation area can accurately cover the contact position between the top cover 330 and the housing 310, and the welding head 71 can stably weld the top cover 330 and the housing 310 together. Therefore, the welding of the entire connection area between the top cover 330 and the housing 310 can be completed accurately without misalignment, the internal structure of the battery 300 can be better sealed, and the safety of the battery 300 is improved.

[0083] Please refer to Figure 1 and Figure 2 In some embodiments, the feeding assembly 30 includes a mounting position 301 for accommodating the battery 300. The rotating assembly 50 includes a rotating member 55 and a pressure head 57, the rotating member 55 being connected to the pressure head 57. The rotating member 55 is rotatable about an axis parallel to a first direction Z. When the pressure head 57 is at least partially in contact with the battery 300, the rotation of the rotating member 55 is transmitted to the battery 300 through the pressure head 57 to drive the battery 300 to rotate. The number of mounting positions 301, the number of rotating members 55, the number of pressure heads 57, and the number of welding assemblies 70 are the same, and there is at least one of them.

[0084] Specifically, the mounting position 301 is a spatial structure in the feeding assembly 30 used to accommodate and mount the battery 300. When the first clamping member 311 and the second clamping member 313 are far apart, the battery 300 can be accommodated in the mounting position 301 or removed from the mounting position 301; when the first clamping member 311 and the second clamping member 313 are close to each other, the first clamping member 311 and the second clamping member 313 can clamp the battery 300 located in the mounting position 301 for subsequent welding operations. In the welding apparatus 100 of this application, the number of mounting positions 301, the number of rotating members 55, the number of pressure heads 57, and the number of welding assemblies 70 represent the maximum number of batteries 300 that the welding apparatus 100 can weld simultaneously in one welding operation. The number of mounting positions 301, rotating parts 55, pressure heads 57, and welding components 70 are the same to maximize the utilization of each component. Furthermore, at least one of these numbers is present, meaning that the welding device 100 can weld more than one battery 300 simultaneously in a single welding operation. When this number is multiple, the welding device 100 can simultaneously weld multiple batteries 300, resulting in higher welding efficiency and faster battery 300 production speed.

[0085] Please refer to Figure 1 and Figure 2 In some embodiments, the welding apparatus 100 further includes a detection component 80. When the turntable 11 rotates the loading assembly 30 and the batteries 300 on the loading assembly 30 together into the welding zone 501, the detection component 80 is positioned relative to at least a portion of the batteries 300 on one of the loading assemblies 30. The detection component 80 is used to detect whether the rotating assembly 50 is aligned with the batteries 300 on the loading assemblies 30 that have entered the welding zone 501.

[0086] Specifically, the detection component 80 is a component in the welding apparatus 100 used to detect whether the rotating component 50 is aligned with the battery 300 on the loading component 30 entering the welding zone 501. When the battery 300 rotates into the welding zone 501 driven by the turntable 11, the detection component 80 is aligned with at least a portion of the battery 300 on one of the loading components 30 in a direction forming a certain angle with the first direction Z. In some embodiments, the detection component 80 is movable relative to the welding zone 501 to be aligned with at least a portion of the batteries 300 on the remaining loading components 30 within the welding zone 501; that is, the detection component 80 can detect whether all the batteries 300 within the welding zone 501 are aligned with their corresponding rotating components 50. For example, the detection component 80 includes a camera (not shown) for capturing images including the rotating component 50 and the batteries 300 on the loading components 30 in the welding zone 501 for analysis of alignment.

[0087] In some embodiments, the welding apparatus 100 also includes a controller (not shown), and a processor is communicatively connected to the detection component 80 (which may be wired or wireless). The processor adjusts the welding apparatus 100 according to the detection results of the detection component 80. For example, if the processor is electrically connected to the motion drive component 90 and the detection component 80 determines that the rotating component 50 is not aligned with the battery 300 on the loading component 30 in the welding interval 501, the processor changes the moving distance of the motion drive component 90 in the first direction Z.

[0088] In the welding apparatus 100 of this application, the detection component 80 can detect whether the rotating component 50 is aligned with the battery 300 on the feeding component 30 in the welding zone 501. Therefore, the relative position of the rotating component 50 connected to the second bracket 95 and the top cover 330 can be controlled more precisely. The pressure head 57 can be precisely and tightly connected with the top cover 330. The pressure head 57 can drive the battery 300 to rotate more stably. Therefore, the welding component 70 can accurately and stably weld the different connection positions between the top cover 330 and the housing 310. The welding of all connection areas between the top cover 330 and the housing 310 can be completed accurately without deviation, and the safety of the battery 300 is better.

[0089] In the description of this specification, the references to terms such as "some embodiments," "in one example," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0090] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A welding apparatus, characterized in that, include: A turntable assembly includes a turntable and a driving component, wherein the driving component is connected to the turntable and is used to drive the turntable to rotate about a rotation axis; Multiple feeding components are connected to the turntable and distributed at intervals around the rotation axis. The feeding components are used to clamp or release the battery. A rotating component is spaced apart from the turntable in a first direction and together forms a welding area. The turntable can drive each of the feeding components and the batteries on the feeding components to rotate together to the welding area. The first direction is parallel to the axis of the rotating shaft. and A welding assembly is positioned opposite the welding section in a second direction, which intersects with the first direction. The welding assembly is used to weld the top cover and the casing of the battery within the welding section. A rotating assembly is used to drive the battery to rotate while the welding assembly is welding the top cover and the casing of the battery, so that the welding assembly can weld different connection positions between the top cover and the casing of the battery.

2. The welding apparatus according to claim 1, characterized in that, The turntable includes a first side and a second side facing away from each other in the first direction, and the feeding assembly includes: A clamping element is disposed on the side where the first surface is located; A feeding drive component is disposed on one side of the second surface, and the feeding drive component is used to output feeding driving force; and A feeding transmission component is inserted through the turntable. One end of the feeding transmission component is connected to the clamping component, and the other end is spaced apart from the feeding drive component. The rotation of the turntable causes the clamping component and the feeding transmission component to rotate together relative to the feeding drive component, so that the feeding transmission component can be aligned with the feeding drive component in the first direction. When the feeding drive component moves closer to the aligned feeding transmission component along the first direction and applies a feeding driving force to the feeding transmission component, the feeding transmission component causes the clamping component to open to release the battery. When the feeding drive component moves away from the aligned feeding transmission component along the first direction and releases the feeding driving force applied to the feeding transmission component, the feeding transmission component causes the clamping component to close to clamp the battery.

3. The welding apparatus according to claim 2, characterized in that, The feeding transmission component includes a first transmission arm and a second transmission arm. The first transmission arm has two opposite ends in the length direction, and the second transmission arm has two opposite ends in the length direction. The end of the first transmission arm near the feeding drive component is hinged to the end of the second transmission arm near the feeding drive component. The clamping member includes a first clamping sub-component and a second clamping sub-component. The end of the first transmission arm away from the feeding drive member is connected to the first clamping sub-component; the end of the second transmission arm away from the feeding drive member is connected to the second clamping sub-component. When the feeding drive member approaches the feeding drive member along the first direction and applies a feeding driving force to the feeding drive member, the first transmission arm and the second transmission arm move away from each other, and the first clamping sub-component and the second clamping sub-component move away from each other to release the battery. When the feeding drive member moves away from the feeding drive member along the first direction and the feeding driving force applied to the feeding drive member is released, the first transmission arm and the second transmission arm move closer to each other, and the first clamping sub-component and the second clamping sub-component move closer to each other to clamp the battery.

4. The welding apparatus according to claim 3, characterized in that, The feeding assembly also includes: A base is disposed on the first surface, and the clamping member is mounted on the base; A first elastic element, the two ends of which are respectively connected to the first clamping sub-component and the base, the first elastic element being used to provide an elastic restoring force when the first clamping sub-component approaches the second clamping sub-component; and The second elastic element has two ends connected to the second clamping sub-component and the base, respectively. The second elastic element is used to provide elastic restoring force when the second clamping sub-component approaches the first clamping sub-component.

5. The welding apparatus according to claim 3, characterized in that, The feeding drive component is a telescopic cylinder or a linear motor, and is capable of moving along the first direction; and / or The first transmission arm and the second transmission arm are symmetrical about an axis parallel to the first direction, and the first clamping component and the second clamping component are symmetrical about an axis perpendicular to the first direction.

6. The welding apparatus according to claim 1, characterized in that, The welding apparatus further includes a support platform and a moving drive assembly. The support platform is located above the turntable, and the moving drive assembly is disposed on the support platform and is used to drive the rotating assembly to move relative to the support platform in the first direction. The rotating assembly includes: A rotary drive component is connected to the support platform, and the rotary drive component is used to output a rotary driving force. A rotary transmission component is connected to the rotary drive component and is used to transmit the rotary driving force output by the rotary drive component; A rotating component, connected to the rotary drive component, is configured to rotate about an axis parallel to the first direction under the influence of the rotary drive force transmitted by the rotary transmission component; and The pressure head, connected to the rotating component, rotates together with the loading assembly and the battery on the loading assembly to the welding area when the turntable drives the rotating assembly to move relative to the support platform in the first direction and move the rotating component and the pressure head closer to the battery, so that the pressure head abuts against the top cover of the battery. The rotating drive component is used to drive the rotating component to rotate via the rotating transmission component and transmit the rotation to the battery through the pressure head, so as to drive the battery to rotate.

7. The welding apparatus according to claim 6, characterized in that, The rotating assembly also includes: The loading seat, the pressure head is fixedly connected to the rotating member, and the rotating member passes through the loading seat and the rotary transmission member; and The third elastic element has its two ends connected to the loading seat and the pressure head, respectively. The rotary drive component is a rotary motor.

8. The welding apparatus according to claim 6, characterized in that, The mobile drive component includes: The first support is mounted on the support platform; A movable drive unit, mounted on the first bracket, extends beyond the support platform in a direction perpendicular to the first direction; and The second bracket is connected to the moving drive and extends beyond the support platform in a direction perpendicular to the first direction. The rotating component is mounted on the second bracket, and the moving drive is used to drive the second bracket and the rotating component mounted on the second bracket to move together in the first direction.

9. The welding apparatus according to claim 8, characterized in that, The moving drive component is a telescopic cylinder or a linear motor, and is capable of moving along the first direction; and / or The first bracket is provided with a guide portion extending along the first direction, and the second bracket is provided with a mating portion extending along the first direction. The guide portion and the mating portion cooperate to guide the second bracket to move along the first direction.

10. The welding apparatus according to any one of claims 1-9, characterized in that, The welding assembly includes: A welding head for emitting a laser to weld the battery, the laser radiation area emitted by the welding head covering at least a portion of the junction between the top cover and the casing of the battery; and An alignment frame is used to fix and mount the welding head, the position of the welding head relative to the alignment frame in the first direction is adjustable to change the relative position of the welding head relative to the welding section in the first direction; and / or, the welding head is rotatable relative to the alignment frame about an axis parallel to the second direction to change the radiation area of ​​the welding head.

11. The welding apparatus according to any one of claims 1-9, characterized in that, The feeding assembly includes a mounting position for accommodating the battery; the rotating assembly includes a rotating member and a pressure head, the rotating member being connected to the pressure head, the rotating member being rotatable about an axis parallel to the first direction, and when the pressure head is in at least partial contact with the battery, the rotation of the rotating member is transmitted to the battery through the pressure head to drive the battery to rotate; the number of mounting positions, the number of rotating members, the number of pressure heads, and the number of welding assemblies are the same, and there is at least one of them.

12. The welding apparatus according to any one of claims 1-9, characterized in that, Also includes: The detection component, when the turntable drives the feeding component and the battery on the feeding component to rotate together into the welding zone, is positioned opposite at least a portion of the battery on one of the feeding components, and is used to detect whether the rotating component is aligned with the battery on the feeding component entering the welding zone.

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