Battery clamp and battery welding device

Abstract

The invention provides a battery clamp and a battery welding device. The battery clamp comprises a clamp bottom plate and a clamping plate, the clamp top plate is adjustably mounted on the clamp bottom plate in the vertical direction, and the clamp top plate is located above the clamp bottom plate; the lower pressing plate assembly is assembled on the clamp bottom plate and is used for bearing the battery; the upper pressing plate assembly is assembled on the clamp top plate, the upper pressing plate assembly is provided with a first air blowing opening and a dust suction opening, the first air blowing opening faces the welding seam, the outline of the first air blowing opening corresponds to the outline of the welding seam, the dust suction opening faces the welding seam, and the outline of the dust suction opening corresponds to the outline of the welding seam. The outline of the first air blowing port and the outline of the dust suction port correspond to the outline of the welding seam, which means that during welding, all welding spot areas on the outline of the welding seam can be provided with nitrogen in real time, dust and impurities can be removed, it can be guaranteed that the welding spot areas are always in an oxygen-free and dust-free atmosphere, the welding spots, namely the welding seam, can be effectively prevented from being oxidized, and the welding quality is improved. The welding quality of the battery is ensured.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a battery clamp and a battery welding device. Background Technology

[0002] The battery consists of a casing and a cover, which are typically combined and laser-welded during assembly. In existing technology, an air blower and a dust suction head are usually used to blow air and remove dust towards the weld point to prevent weld oxidation and clean the welding workspace. During welding, the air blower and dust suction head move with the weld point to ensure the welding atmosphere in the weld area meets requirements in real time. However, the high temperature generated during laser welding cannot be quickly transferred to other media on the battery. When the air blower moves along the weld contour, the weld area that has been welded but not sufficiently cooled will experience air backflow under atmospheric pressure, meaning that this weld area still has a risk of oxidation. Simultaneously, impurities are continuously generated during the welding process within the same battery. When the dust suction head and air blower move synchronously, some impurities that do not enter the dust suction head risk falling back into the weld area, affecting weld quality. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the first objective of the present invention is to provide a battery clamp that can continuously supply nitrogen gas to the welding joint, thereby effectively preventing weld oxidation.

[0004] The second objective of this invention is to provide a battery welding apparatus that can prevent oxidation in the weld area and effectively improve the quality of battery welding.

[0005] The embodiments of the present invention are achieved through the following technical solutions: A battery clamp includes: a clamp base plate; a clamp top plate, adjustablely mounted vertically on the clamp base plate, the clamp top plate being positioned above the clamp base plate; a lower pressure plate assembly, assembled on the clamp base plate for supporting a battery; and an upper pressure plate assembly, assembled on the clamp top plate, the upper pressure plate assembly being configured with a first air blowing port and a dust extraction port, the first air blowing port being oriented towards a weld seam and the outline of the first air blowing port corresponding to the outline of the weld seam, and the dust extraction port being oriented towards the weld seam and the outline of the dust extraction port corresponding to the outline of the weld seam.

[0006] According to a preferred embodiment, the upper pressure plate assembly includes a clamping pressure plate, an upper air blowing plate, and a dust extraction plate. The upper side of the clamping pressure plate is provided with an upper air blowing groove, and a first through hole is provided through the bottom of the upper air blowing groove. A second through hole is provided through the upper air blowing plate, and a third through hole is provided through the dust extraction plate. A first guide cylinder is provided on the lower side of the upper air blowing plate. The inner wall of the first guide cylinder smoothly transitions with the inner wall of the second through hole. The first guide cylinder is embedded in the first through hole, and the outer wall of the first guide cylinder and the inner wall of the first through hole form the first air blowing port, which communicates with the upper air blowing groove. A second guide cylinder is provided on the lower side of the dust extraction plate. The inner wall of the second guide cylinder smoothly transitions with the inner wall of the third through hole. The second guide cylinder is embedded in the second through hole, and the outer wall of the second guide cylinder and the inner wall of the second through hole and / or the inner wall of the first guide cylinder form the dust extraction port.

[0007] According to a preferred embodiment, a first step is provided on the inner wall of the upper air-blowing groove, and the upper air-blowing plate is assembled on the first step.

[0008] According to a preferred embodiment, the dust extraction plate is assembled on the upper side of the clamping plate, and the dust extraction plate, the clamping plate and the upper air blowing plate form an upper dust extraction chamber.

[0009] According to a preferred embodiment, a third guide cylinder is provided on the bottom inner side of the upper air-blowing groove, and the inner wall of the third guide cylinder smoothly transitions with the inner wall of the first through hole.

[0010] According to a preferred embodiment, the upper pressure plate assembly includes a hook pusher block that can move horizontally to approach or move away from the battery, and the hook pusher block is provided with a support step; when the battery clamp is in the working state, the support step is lower than the battery in the vertical direction.

[0011] According to a preferred embodiment, the pressure plate assembly includes a main board with a second air inlet disposed thereon. The second air inlet is disposed facing the back side region of the weld and the outline of the second air inlet corresponds to the outline of the weld.

[0012] According to a preferred embodiment, a fourth through hole is provided through the main board, a lower air blowing plate is mounted on the lower side of the main board, a fifth through hole is provided through the lower air blowing plate, a fourth guide cylinder is mounted on the lower air blowing plate, the inner wall of the fourth guide cylinder smoothly transitions with the inner wall of the fifth through hole; the fourth guide cylinder is embedded in the fourth through hole, and the inner wall of the fourth through hole and the outer wall of the fourth guide cylinder form the second air blowing port.

[0013] According to a preferred embodiment, a fourth through hole is provided through the motherboard, a lifting mounting base is mounted on the lower side of the motherboard, a product lifting plate is disposed on the upper side of the lifting mounting base, the product lifting plate is located in the fourth through hole, and a detection hole is provided through the lifting mounting base for exposing the back side area of ​​the weld.

[0014] According to a preferred embodiment, both the lifting mounting base and the product lifting plate are provided with lifting holes, and the lifting holes on the lifting mounting base and the product lifting plate correspond one-to-one and are coaxial, for inserting the ejector pin assembly.

[0015] According to a preferred embodiment, the upper side of the motherboard is provided with a reference pusher and a floating pusher in the circumferential direction of the outline of the second air outlet. The floating pusher is disposed opposite to the reference pusher, and the battery is located between the floating pusher and the reference pusher disposed opposite to the floating pusher.

[0016] According to a preferred embodiment, the floating pusher includes a pusher slide, a positioning pusher block, and a drive cylinder. The pusher slide is slidably mounted on the main board, the drive cylinder is fixedly mounted on the main board, the positioning pusher block is mounted on the pusher slide, and a cylinder connector is provided at the free end of the piston rod of the drive cylinder. A limit plate and a spring limit block are provided on the pusher slide, the cylinder connector is movable between the limit plate and the spring limit block, and a buffer spring is pressed between the spring limit block and the cylinder connector.

[0017] According to a preferred embodiment, the lower pressure plate assembly is provided with a first positioning element, and the upper pressure plate assembly is provided with a second positioning element adapted to the first positioning element.

[0018] A battery welding apparatus includes a frame, a detection module, a welding module, a pin assembly, and the aforementioned battery clamp. The battery clamp is adjustablely mounted on the frame. Both the welding module and the detection module are mounted on the frame, and the battery clamp is located between the welding module and the detection module.

[0019] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects: In this invention, the outlines of the first air blowing port and the dust extraction port correspond to the outline of the weld. This means that during welding, all welding point areas on the weld outline can be supplied with nitrogen in real time to remove dust and impurities, ensuring that the welding point area is always in an oxygen-free and dust-free atmosphere. This can effectively prevent oxidation of the welding point, i.e., the weld, and ensure the welding quality of the battery. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a first three-dimensional structural diagram of the battery clamp provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the second three-dimensional structure of the battery clamp provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the assembly structure of the fixture base plate and the vertical guide member provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the assembly structure of the fixture top plate and the fixture cylinder provided in an embodiment of the present invention; Figure 5 A three-dimensional structural schematic diagram of the upper pressure plate assembly provided in an embodiment of the present invention; Figure 6 This is a first exploded structural diagram of the upper pressure plate assembly provided in an embodiment of the present invention; Figure 7 This is a second exploded structural diagram of the upper pressure plate assembly provided in an embodiment of the present invention; Figure 8 for Figure 5 Sectional view of section AA; Figure 9 for Figure 8 A magnified view of the structure at point B in the middle; Figure 10 This is a three-dimensional structural diagram of the hook pusher block provided in an embodiment of the present invention; Figure 11 A three-dimensional structural schematic diagram of the pressure plate assembly provided in an embodiment of the present invention; Figure 12 This is a first exploded structural diagram of the pressure plate assembly provided in an embodiment of the present invention; Figure 13 This is a second exploded structural diagram of the pressure plate assembly provided in an embodiment of the present invention; Figure 14 for Figure 11 A sectional view of section C-C; Figure 15 A schematic diagram of the assembly structure of the lifting mounting base and the product lifting plate provided in an embodiment of the present invention; Figure 16 A three-dimensional structural diagram of the floating pusher provided in an embodiment of the present invention; Figure 17This is a three-dimensional structural diagram of the reference pusher provided in an embodiment of the present invention; Figure 18 This is a three-dimensional structural schematic diagram of the battery welding device provided in an embodiment of the present invention; Figure 19 This is a schematic diagram of the assembly structure of the battery clamp, detection module, and ejector pin assembly provided in an embodiment of the present invention. Icons: 10-Battery clamp, 100-Clamp base plate, 101-First mounting port, 200-Clamp top plate, 201-Clamp cylinder, 202-Dust hood, 203-Vertical guide, 204-Second mounting port, 300-Lower pressure plate assembly, 301-Main board, 302-Second air inlet, 303-Fourth through hole, 304-Lower air plate, 305-Fourth guide cylinder, 306- Fifth through hole, 307-lifting mounting base, 308-product lifting plate, 309-inspection hole, 310-lifting hole, 311-reference pusher, 312-floating pusher, 313-contour surface, 314-pusher slide, 315-positioning push block, 316-drive cylinder, 317-cylinder connector, 318-limiting plate, 319-spring limit block, 320-buffer spring, 321 - First positioning component, 400- Upper pressure plate assembly, 401- Fixture pressure plate, 402- Upper air blowing plate, 403- Dust extraction plate, 404- Upper air blowing groove, 405- First through hole, 406- Second through hole, 407- Third through hole, 408- First guide cylinder, 409- Second guide cylinder, 410- First air blowing port, 411- Dust extraction port, 412- First step, 413- Lower air blowing groove, 414- Dust extraction groove, 415- Dust extraction chamber, 416- Dust extraction hole, 417- Third guide cylinder, 418- Compatible plate, 419- Hook push block, 420- Support step, 421- Limiting protrusion, 422- Limiting groove, 423- Quick connector, 500- Battery, 501- Weld seam, 600- Frame, 700- Detection module, 800- Welding module, 900- Ejector pin assembly. Detailed Implementation

[0022] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Please refer to Figures 1 to 17 A battery clamp includes a clamp base plate 100, a clamp top plate 200, a lower pressure plate assembly 300, and an upper pressure plate assembly 400. The clamp top plate 200 is vertically adjustable and mounted on the clamp base plate 100, and is positioned above the clamp base plate 100. The lower pressure plate assembly 300 is mounted on the clamp base plate 100 and is used to support a battery 500. The upper pressure plate assembly 400 is mounted on the clamp top plate 200 and is provided with a first air blowing port 410 and a dust extraction port 411. The first air blowing port 410 is oriented towards a weld 501 and its outline corresponds to the outline of the weld 501. The dust extraction port 411 is oriented towards the weld 501 and its outline corresponds to the outline of the weld 501. In use, the battery 500 is clamped and fixed between the upper pressure plate assembly 400 and the lower pressure plate assembly 300. The first air blowing port 410 is connected to a nitrogen source (not shown in the figure), and the dust extraction port 411 is connected to a negative pressure source (not shown in the figure). The first air blowing port 410 is used to provide nitrogen to the weld seam 501 area, and the dust extraction port 411 is used to remove impurities from the weld seam 501 area. The first air blowing port 410 and the first dust extraction port 411 work together to create an atmosphere (oxygen-free and dust-free) in the weld seam 501 area that is conducive to laser welding, which helps to ensure welding quality. Specifically, in this embodiment, the outlines of the first air blowing port 410 and the dust extraction port 411 correspond to the outline of the weld seam 501. This means that during welding, all weld point areas on the outline of the weld seam 501 can be supplied with nitrogen in real time and have dust and impurities removed. In other words, this means that for a specific weld point on weld 501, the nitrogen supply and dust removal work will not stop due to the movement of the laser spot after the welding is completed. Instead, the nitrogen supply and dust removal work will continue until the entire weld 501 is completed. This ensures that the weld point area is always in an oxygen-free and dust-free atmosphere. During this process, nitrogen also helps to remove heat from the weld point area, thus effectively preventing oxidation of the weld point, i.e., weld 501, and ensuring the welding quality of battery 500.

[0025] Typically, the nitrogen and negative pressure sources are turned on about two seconds before welding begins, so that an atmosphere conducive to laser welding is formed in each area of ​​the weld 501 contour. After welding is completed, the nitrogen and negative pressure sources are turned off about two seconds later, so that the last weld point can be fully cooled and impurities in the weld 501 contour area can be completely removed.

[0026] like Figures 5 to 9As shown, the upper pressure plate assembly 400 includes a clamping pressure plate 401, an upper air blowing plate 402, and a dust extraction plate 403. The upper side of the clamping pressure plate 401 is provided with an upper air blowing groove 404, and a first through hole 405 is provided through the bottom of the upper air blowing groove 404. A second through hole 406 is provided through the upper air blowing plate 402, and a third through hole 407 is provided through the dust extraction plate 403. A first guide cylinder 408 is provided on the lower side of the upper air blowing plate 402. The inner wall of the first guide cylinder 408 smoothly transitions with the inner wall of the second through hole 406. A first air blowing port 410 is formed between the outer wall of the first guide cylinder 408 and the inner wall of the first through hole 405, and the first air blowing port 410 is connected to the upper air blowing groove 404. A second guide cylinder 409 is provided on the lower side of the dust extraction plate 403. The inner wall of the second guide cylinder 409 smoothly transitions with the inner wall of the third through hole 407. The second guide cylinder 409 is embedded in the second through hole 406. The outer wall of the second guide cylinder 409 and the inner wall of the second through hole 406 and / or the inner wall of the first guide cylinder 408 form a dust extraction port 411. In this embodiment, the upper air blowing plate 402 and the first guide cylinder 408 are integrally formed, and the dust extraction plate 403 and the second guide cylinder 409 are integrally formed. In this embodiment, the upper air blowing plate 402 and the dust extraction plate 403 are detachably assembled on the clamping plate 401 by bolts or screws. That is, the split upper pressure plate assembly 400 is convenient for production and processing and later maintenance. By replacing at least one of the clamping plate 401, the upper air blowing plate 402 and the dust extraction plate 403, the model can be changed to change the parameters of the first air blowing port 410 or the dust extraction port 411, which is beneficial to saving costs.

[0027] like Figure 8 As shown, a first step 412 is disposed on the inner wall of the upper air blowing groove 404, and the upper air blowing plate 402 is assembled on the first step 412. Specifically, the lower side of the upper air blowing plate 402 overlaps the first step 412. In some embodiments, a lower air blowing groove 413 is formed in the area of ​​the lower side of the upper air blowing plate 402 corresponding to the upper air blowing groove 404, and the upper air blowing groove 404 and the lower air blowing groove 413 are connected. This increases the space for nitrogen to move before entering the first air blowing port 410, so that the nitrogen can be sufficiently buffered before entering the first air blowing port 410, so that the nitrogen distribution in each area of ​​the first air blowing port 410 is more uniform, thereby ensuring the consistency of welding quality in each area of ​​the weld 501.

[0028] like Figure 8 As shown, the dust extraction plate 403 is assembled on the upper side of the clamping plate 401, and the dust extraction plate 403, the clamping plate 401, and the upper air blowing plate 402 together form an upper dust extraction chamber 415. Specifically, a dust extraction groove 414 is provided on the lower side of the dust extraction plate 403, and the dust extraction groove 414 constitutes the main body of the dust extraction chamber 415. Further, a dust extraction hole 416 is provided through the bottom of the dust extraction groove 414. Figure 1and Figure 3 As shown, a dust extraction hood 202 is mounted on the upper side of the dust extraction plate 403, and a dust extraction hole 416 is connected to the dust extraction hood 202, which is connected to a negative pressure source.

[0029] like Figure 6 , Figure 8 and Figure 9 As shown, a third guide cylinder 417 is provided on the inner side of the bottom of the upper air blowing groove 404, and the inner wall of the third guide cylinder 417 smoothly transitions with the inner wall of the first through hole 405. In this embodiment, the third guide cylinder 417 is integrally formed with the clamping plate 401. The provision of the third guide cylinder 417 here helps to increase the depth of the upper air blowing groove 404, and at the same time increases the depth of the first air blowing port 410, which helps to uniformly guide the nitrogen gas flow to the weld seam 501 area. It should be noted that... Figure 8 and Figure 9 In the diagram, the blue arrows indicate the flow path of nitrogen, while the red arrows indicate the path of the dust extraction airflow.

[0030] In some embodiments, a quick-connect connector 423 is mounted on the clamping plate 401, and the quick-connect connector 423 is connected to the upper air blowing groove 404. The quick-connect connector 423 is used to connect an external nitrogen source during welding.

[0031] like Figure 8 As shown, in some embodiments, to facilitate the assembly of the upper pressure plate assembly 400 with the fixture top plate 200, the upper pressure plate assembly 400 further includes a compatibility plate 418, and the fixture pressure plate 401 is mounted to the fixture top plate 200 by bolts or screws. In this embodiment, the quick-connect plug passes through the compatibility plate 418 and is then assembled onto the fixture pressure plate 401.

[0032] like Figure 7 , Figure 8 and Figure 10 As shown, the upper pressure plate assembly 400 includes a hook pusher block 419, which can move horizontally to approach or move away from the battery 500. The hook pusher block 419 is provided with a support step 420. When the battery clamp 10 is in the working state, the support step 420 is lower than the battery 500 in the vertical direction.

[0033] Specifically, in use, the battery 500, i.e., the assembly of the casing and cover, is transferred between the upper pressure plate assembly 400 and the lower pressure plate assembly 300 by a robotic arm (not shown in the figure). First, the battery 500 is transferred to the underside of the upper pressure plate assembly 400, and the battery 500 is vertically supported and limited by the ejector pin assembly 900 in the direction of the lower pressure plate assembly 300. Then the robotic arm is withdrawn. Then the ejector pin assembly 900 is lowered so that the battery 500 overlaps the lower pressure plate assembly 300, and the ejector pin assembly 900 is withdrawn. Next, the top plate moves toward the fixture base plate 100, and the upper pressure plate assembly 400 and the lower pressure plate assembly 300 come close together so that the battery fixture 10 is closed, and the welding operation can be performed.

[0034] In this embodiment, the hook pusher 419 is driven by a cylinder, which is mounted on the clamping plate 401 or the compatible plate 418. The hook pusher 419 is slidably connected to the clamping plate 401 via a slide rail slider assembly.

[0035] Understandably, after the battery 500 is welded, the hook pusher 419 moves toward the battery 500 so that the support step 420 is below the battery 500; then the fixture top plate 200 moves upward, the battery fixture 10 opens, and the hook pusher 419 carries the battery 500 upward to facilitate the robot arm unloading the battery 500.

[0036] In some embodiments, before or during welding, the hook pusher 419 moves toward the battery 500 so that the support step 420 is below the battery 500. After welding, the battery 500 can be unloaded directly, which can improve the unloading efficiency of the battery 500.

[0037] like Figure 7 As shown, there are at least two hook push blocks 419, which are arranged opposite to the battery 500 to better support the battery 500.

[0038] In this embodiment, the hook pusher 419 is disposed on the side of the clamping plate 401 facing the lower clamping plate assembly 300. The clamping plate 401 is provided with a limiting protrusion 421, and the hook pusher 419 is provided with a limiting groove 422 that matches the limiting protrusion 421. The limiting protrusion 421 is embedded in the limiting groove 422. Here, the limiting groove 422, together with the limiting protrusion 421, limits the movement range of the hook pusher 419, thereby improving the safety of the battery clamp 10.

[0039] like Figures 10 to 14As shown, the pressure plate assembly 300 includes a main board 301, on which a second air inlet 302 is disposed. The second air inlet 302 is positioned facing the back side region of the weld 501, and the outline of the second air inlet 302 corresponds to the outline of the weld 501. In this embodiment, the welding of the battery 500 is a penetration weld, therefore the back side region of the weld 501 also has high temperature and is at risk of oxidation. Therefore, the second air inlet 302 is externally connected to a nitrogen source, and nitrogen is supplied to the back side region of the weld 501 through the second air inlet 302 to prevent the back side region of the weld 501 from being oxidized. The outline of the second air inlet 302 corresponds to the outline of the weld 501, and its function is the same as that of the first air inlet 410 corresponding to the outline of the weld 501, which will not be described again here. It should be noted that... Figure 14 In the diagram, the blue arrows illustrate the flow path of nitrogen gas.

[0040] In this embodiment, a fourth through hole 303 is provided through the main board 301, and a lower air blowing plate 304 is mounted on the lower side of the main board 301. A fifth through hole 306 is provided through the lower air blowing plate 304, and a fourth guide cylinder 305 is mounted on the lower air blowing plate 304. The inner wall of the fourth guide cylinder 305 and the inner wall of the fifth through hole 306 are smoothly transitioned. The fourth guide cylinder 305 is embedded in the fourth through hole 303, and the inner wall of the fourth through hole 303 and the outer wall of the fourth guide cylinder 305 form a second air blowing port 302.

[0041] Furthermore, such as Figure 12 , Figure 13 and Figure 15 As shown, a lifting mounting base 307 is mounted on the lower side of the motherboard 301, and a product lifting plate 308 is disposed on the upper side of the lifting mounting base 307. The product lifting plate 308 is located within the fourth through hole 303. A detection hole 309 is provided through the lifting mounting base 307 to expose the back area of ​​the weld 501. After welding, in order to detect the welding quality, a detection module 700, specifically a CCD camera or a 3D camera, is usually set below the detection hole 309 to detect the welding quality. Combined with the structure of the second air blowing port 302 mentioned above, the field of view of the detection module 700 can be effectively cleaned. Compared with a nitrogen-free environment, the image quality of the camera is higher and more stable when using the second air blowing port 302 for detection.

[0042] In this embodiment, as Figure 15 As shown, both the lifting mounting base 307 and the product lifting plate 308 are provided with lifting holes 310. The lifting holes 310 on the lifting mounting base 307 and the product lifting plate 308 correspond one-to-one and are coaxial, and are used to pass through the ejector pin assembly 900 mentioned above.

[0043] like Figure 11 and Figure 12As shown, the upper side of the motherboard 301 is provided with a reference pusher 311 and a floating pusher 312 in the circumferential direction of the outline of the second air outlet 302. The floating pusher 312 is disposed opposite to the reference pusher 311, and the battery 500 is located between the floating pusher 312 and the reference pusher 311 disposed opposite to the floating pusher 312. Specifically, the upper side of the motherboard 301 is provided with a contoured surface 313, which is used to support the battery 500. In use, after the battery 500 is placed on the lower pressure plate assembly 300, i.e. the contour surface 313, the position of the battery 500 is corrected by the cooperation of the reference pusher 311 and the floating pusher 312 to accurately position it; then the upper pressure plate assembly 400 is close to the lower pressure plate assembly 300 to close the clamp, and the hook pusher block 419 fixes the battery 500 on the basis of the reference pusher 311 and the floating pusher 312 to ensure the stability of the spatial position of the battery 500 during the welding process.

[0044] The floating pusher 312, together with the reference pusher 311, can prevent the battery 500 from being damaged by pressure during the position correction process.

[0045] Specifically, such as Figure 16 As shown, the floating pusher 312 includes a pusher slide 314, a positioning pusher block 315, and a drive cylinder 316. The pusher slide 314 is slidably mounted on the main board 301, the drive cylinder 316 is fixedly mounted on the main board 301, the positioning pusher block 315 is mounted on the pusher slide 314, the free end of the piston rod of the drive cylinder 316 is equipped with a cylinder connector 317, the pusher slide 314 is equipped with a limit plate 318 and a spring limit block 319, the cylinder connector 317 can move between the limit plate 318 and the spring limit block 319, and a buffer spring 320 is pressed between the spring limit block 319 and the cylinder connector 317. In use, when it is necessary to position the battery 500, the piston rod of the drive cylinder 316 extends, and the cylinder connector 317 moves toward the spring limit block 319 to compress the buffer spring 320. The push-side slide 314 is slidably mounted on the main board 301 through the slide rail slider assembly. At this time, the buffer spring 320 acts on the spring limit block 319 to drive the push-side slide 314 together with the positioning push block 315 to move toward the battery 500. When the positioning push block 315 abuts against the battery 500, it achieves flexible contact with the battery 500 under the action of the buffer spring 320. After welding is completed, the piston rod of the drive cylinder 316 retracts, and the cylinder connector 317 drives the push-side slide 314 through the limit plate 318 so that the positioning push block 315 disengages from the battery 500.

[0046] like Figure 17As shown, in this embodiment, the structure of the reference pusher 311 differs from that of the floating pusher 312 in that the piston rod of the drive cylinder of the reference pusher 311 is fixedly mounted on the pusher slide. As a reference, the reference pusher 311 does not require buffering, therefore it does not require a buffer spring or any structure related to the buffer spring 320 in the floating pusher 312. Other structures and functions are the same as those of the floating pusher 312, and will not be described again here.

[0047] The lower pressure plate assembly 300 is equipped with a first positioning element 321, and the upper pressure plate assembly 400 is equipped with a second positioning element (not shown in the figure) that is adapted to the first positioning element 321. Optionally, the first positioning element 321 is a positioning pin, and the second positioning element is a pin hole. Alternatively, the first positioning element 321 is a positioning protrusion, and the second positioning element is a positioning groove. This can improve the closing accuracy of the battery clamp 10.

[0048] like Figures 1 to 4 As shown, a vertical guide 203 is provided on the fixture base plate 100, and the vertical guide 203 is assembled to the fixture top plate 200. A fixture cylinder 201 is assembled on the fixture top plate 200, and the piston rod of the fixture cylinder 201 is connected to the fixture base plate 100. In this embodiment, the vertical guide 203 is a steel ball guide post assembly. In some embodiments, the vertical guide 203 can be a guide rod, which passes through the fixture top plate 200 and is slidably connected to it via a linear bearing. In use, the fixture cylinder 201 drives the fixture top plate 200 to move relative to the fixture base plate 100 to realize the opening and closing of the fixture.

[0049] In this embodiment, a first mounting port 101 is provided through the bottom plate 100 of the fixture for mounting the lower pressure plate assembly 300; a second mounting port 204 is provided through the top plate 200 of the fixture for mounting the upper pressure plate assembly 400.

[0050] like Figure 18 and Figure 19As shown, this embodiment also provides a battery 500 welding device, including a frame 600, a detection module 700, a welding module 800, a pin assembly 900, and the aforementioned battery clamp 10. The battery clamp 10 is adjustablely mounted on the frame 600. Both the welding module 800 and the detection module 700 are mounted on the frame 600, with the battery clamp 10 positioned between the welding module 800 and the detection module 700. The detection module 700 includes the aforementioned CCD camera or 3D camera. The CCD camera or 3D camera achieves translation in the horizontal and vertical directions through existing mechanisms such as linear modules or sliding mechanisms, and rotates through a rotary motor to facilitate all-round detection of the battery 500 weld seam 501. It should be noted that the scheme for driving the CCD camera or 3D camera to move in space, including translation and rotation, is existing technology, and the standard is to enable the photographic detection of the weld seam 501. Based on the battery clamp 10, the battery 500 welding device can avoid oxidation in the weld seam 501 area, which can effectively improve the welding quality of the battery 500.

[0051] Preferably, the ejector pin assembly 900 can be integrated into the detection module 700, so that the ejector pin assembly 900 can be translated horizontally through the same set of linear modules or sliding mechanisms, saving costs. Furthermore, the ejector pin assembly 900 can be driven by a cylinder to move vertically, so that the ejector pin assembly 900 can act on the battery 500, facilitating the loading of the battery 500 onto the lower pressure plate assembly 300. The welding module 800 is a laser welding mechanism, which is existing technology and will not be described in detail here.

[0052] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A battery clamp, characterized in that, include: Fixture base plate; A fixture top plate is vertically adjustable and mounted on the fixture bottom plate, with the fixture top plate positioned above the fixture bottom plate; The lower pressure plate assembly is assembled on the base plate of the fixture and is used to support the battery; An upper pressure plate assembly is mounted on the top plate of the fixture. The upper pressure plate assembly is equipped with a first air blowing port and a dust extraction port. The first air blowing port is oriented towards the weld and the outline of the first air blowing port corresponds to the outline of the weld. The dust extraction port is oriented towards the weld and the outline of the dust extraction port corresponds to the outline of the weld.

2. The battery clamp according to claim 1, characterized in that, The upper pressure plate assembly includes a clamping pressure plate, an upper air blowing plate, and a dust extraction plate. The upper side of the clamping pressure plate is provided with an upper air blowing groove. A first through hole is provided through the bottom of the upper air blowing groove. A second through hole is provided through the upper air blowing plate, and a third through hole is provided through the dust extraction plate. A first guide cylinder is provided on the lower side of the upper air blowing plate. The inner wall of the first guide cylinder smoothly transitions with the inner wall of the second through hole. The first guide cylinder is embedded in the first through hole. The outer wall of the first guide cylinder and the inner wall of the first through hole form the first air blowing port. The first air blowing port is connected to the upper air blowing groove. A second guide cylinder is provided on the lower side of the dust extraction plate. The inner wall of the second guide cylinder smoothly transitions with the inner wall of the third through hole. The second guide cylinder is embedded in the second through hole. The dust extraction port is formed between the outer wall of the second guide cylinder and the inner wall of the second through hole and / or the inner wall of the first guide cylinder.

3. The battery clamp according to claim 2, characterized in that, The inner wall of the upper air-blowing groove is provided with a first step, and the upper air-blowing plate is assembled on the first step.

4. The battery clamp according to claim 2, characterized in that, The dust extraction plate is assembled on the upper side of the clamping plate, and the dust extraction plate, the clamping plate and the upper air blowing plate form an upper dust extraction chamber.

5. The battery clamp according to claim 2, characterized in that, A third guide cylinder is provided on the bottom inner side of the upper air blowing groove, and the inner wall of the third guide cylinder smoothly transitions with the inner wall of the first through hole.

6. The battery clamp according to claim 1, characterized in that, The upper pressure plate assembly includes a hook pusher block, which is capable of moving horizontally to approach or move away from the battery, and the hook pusher block is provided with a support step. When the battery clamp is in operation, the support step is lower than the battery in the vertical direction.

7. The battery clamp according to claim 1, characterized in that, The pressure plate assembly includes a main board with a second air inlet disposed thereon. The second air inlet is disposed facing the back side region of the weld and the outline of the second air inlet corresponds to the outline of the weld.

8. The battery clamp according to claim 7, characterized in that, A fourth through hole is provided on the motherboard, a lower air blowing plate is mounted on the lower side of the motherboard, a fifth through hole is provided on the lower air blowing plate, a fourth guide cylinder is mounted on the lower air blowing plate, and the inner wall of the fourth guide cylinder smoothly transitions with the inner wall of the fifth through hole. The fourth guide cylinder is embedded in the fourth through hole, and the inner wall of the fourth through hole and the outer wall of the fourth guide cylinder form the second air blowing port.

9. The battery clamp according to claim 7, characterized in that, A fourth through hole is provided through the main board. A lifting mounting base is mounted on the lower side of the main board. A product lifting plate is disposed on the upper side of the lifting mounting base. The product lifting plate is located in the fourth through hole. A detection hole is provided through the lifting mounting base. The detection hole is used to expose the back side area of ​​the weld.

10. The battery clamp according to claim 9, characterized in that, Both the lifting mounting base and the product lifting plate are provided with lifting holes. The lifting holes on the lifting mounting base and the product lifting plate correspond one-to-one and are coaxial, for inserting the ejector pin assembly.

11. The battery clamp according to claim 7, characterized in that, The upper side of the motherboard is provided with a reference pusher and a floating pusher in the circumferential direction of the outline of the second air outlet. The floating pusher is disposed opposite to the reference pusher, and the battery is located between the floating pusher and the reference pusher disposed opposite to the floating pusher.

12. The battery clamp according to claim 11, characterized in that, The floating pusher includes a pusher slide, a positioning pusher block, and a drive cylinder. The pusher slide is slidably mounted on the main board, the drive cylinder is fixedly mounted on the main board, the positioning pusher block is mounted on the pusher slide, and the free end of the piston rod of the drive cylinder is equipped with a cylinder connector. The pusher slide is equipped with a limit plate and a spring limit block. The cylinder connector can move between the limit plate and the spring limit block, and a buffer spring is pressed between the spring limit block and the cylinder connector.

13. The battery clamp according to claim 1, characterized in that, The lower pressure plate assembly is provided with a first positioning element, and the upper pressure plate assembly is provided with a second positioning element that is adapted to the first positioning element.

14. A battery welding apparatus, characterized in that, The device includes a frame, a detection module, a welding module, a pin assembly, and a battery clamp as described in any one of claims 1-13, wherein the battery clamp is adjustablely mounted on the frame, the welding module and the detection module are both mounted on the frame, and the battery clamp is located between the welding module and the detection module.

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