Battery full-tab current collector automatic welding device and battery production equipment

Abstract

The present disclosure provides a battery full-tab current collector disc welding device and a battery production equipment. The battery full-tab current collector disc welding device, the winding core conveying path of the winding core conveying assembly passes through the turnover end of the winding core turnover assembly, and the turnover end of the winding core turnover assembly is used for overturning operation on the winding core on the winding core conveying path. The current collector disc automatic welding mechanism is installed on the rack, and the current collector disc automatic welding mechanism comprises a positive current collector disc conveying assembly and a negative current collector disc conveying assembly. The conveying end of the negative current collector disc conveying assembly, the turnover end of the winding core turnover assembly and the conveying end of the positive current collector disc conveying assembly are sequentially arranged along the winding core conveying path of the winding core conveying assembly. The current collector disc automatic welding mechanism further comprises a welding assembly, and the winding core conveying path passes through the welding end of the welding assembly. The battery full-tab current collector disc welding device can effectively improve the production quality and production efficiency of the battery.

Description

Technical Field

[0001] This disclosure relates to the technical field of battery production equipment, and in particular to an automatic welding device for battery full-tab current collectors and battery production equipment. Background Technology

[0002] As rechargeable energy storage devices, secondary batteries have been widely used in consumer electronics, smart homes, and other fields due to their advantages such as reusability, stable energy output, and strong adaptability. Compared with traditional primary batteries, they can significantly reduce usage costs and meet the needs of green development, gradually becoming the mainstream energy storage choice. Among them, the all-tab structure has become an important direction for the optimization of secondary battery structure because it can shorten the internal current conduction path, reduce internal resistance, and improve charge / discharge rate and heat dissipation performance, which also puts higher requirements on its production and assembly processes.

[0003] The current mainstream assembly method for rechargeable batteries involves first welding the current collector plates with full tabs to both ends of the wound core, and then installing the welded wound core into the battery casing. The welding precision and quality of the current collector plates directly affect the battery's conductivity, cycle life, and safety. However, the assembly process for rechargeable batteries is still mainly manual. Manual welding makes it difficult to ensure precise alignment between the current collector plates and the wound core ends, and the welding force and angle cannot be uniformly controlled. This not only leads to low production efficiency for rechargeable batteries, making it difficult to meet the needs of large-scale mass production, but also easily results in problems such as incomplete welds and misalignments, significantly reducing the quality of battery production.

[0004] To address the drawbacks of manual welding, some automated welding devices for current collectors have emerged in existing technologies. While these devices improve the standardization of welding operations, they still have significant technical limitations and cannot meet the welding requirements of current collectors with multiple tabs. These devices can only weld a single end face of the core. After welding one end face, the core must be manually flipped and returned to its initial position before welding the other end face can begin. This manual flipping not only increases processing time and further restricts production efficiency but also easily causes impact damage to the core. Furthermore, the current collectors at both ends of the core are designated as positive and negative current collectors, with the tabs located at the positive current collector. If this equipment is used to weld the positive current collector first, subsequent flipping of the core to weld the negative current collector can easily cause the already welded positive tabs to rub, bend, break, or even become damaged, directly affecting the battery's conductivity and significantly reducing battery production quality. Summary of the Invention

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide an automatic welding device for battery tab current collectors and battery production equipment that can effectively improve battery production quality and efficiency.

[0006] The purpose of this disclosure is achieved through the following technical solution: A battery full-tab current collector welding device includes a frame, a core conveying mechanism, and an automatic current collector welding mechanism; The core conveying mechanism is mounted on the frame. The core conveying mechanism includes a core conveying assembly and a core flipping assembly. The core conveying assembly is used to convey cores, and the flipping end of the core flipping assembly is used to flip the cores on the core conveying path. The automatic welding mechanism for the current collector is mounted on the frame. The automatic welding mechanism for the current collector includes a positive current collector conveying assembly and a negative current collector conveying assembly. The conveying end of the negative current collector conveying assembly, the flipping end of the core flipping assembly, and the conveying end of the positive current collector conveying assembly are sequentially arranged along the core conveying path of the core conveying assembly. When the core on the core conveying path passes the conveying end of the negative current collector conveying assembly, the conveying end of the negative current collector conveying assembly conveys the negative current collector to the negative end face of the core and attaches it. When the core on the core conveying path passes the conveying end of the positive current collector conveying assembly, the conveying end of the positive current collector conveying assembly conveys the positive current collector to the positive end face of the core and attaches it. The automatic welding mechanism for the current collector also includes a welding assembly. The core conveying path passes through the welding end of the welding assembly. When the negative current collector is attached to the negative end face of the core, the welding end of the welding assembly welds the negative current collector to the negative end face of the core. When the positive current collector is attached to the positive end face of the core, the welding end of the welding assembly welds the positive current collector to the positive end face of the core. After the welding assembly welds the negative current collector to the negative end face of the core, the flipping end of the core flipping assembly flips the core so that the positive end face of the core faces towards the conveying end of the positive current collector conveying assembly.

[0007] In one embodiment, the core conveying path is provided with multiple working points, which are sequentially arranged along the core conveying path as follows: negative electrode current collector conveying point, negative electrode current collector welding point, core flipping point, positive electrode current collector conveying point, and positive electrode current collector welding point. The negative electrode current collector conveying point is arranged opposite to the conveying end of the negative electrode current collector conveying assembly, the core flipping point is arranged opposite to the flipping end of the core flipping assembly, and both the negative electrode current collector welding point and the positive electrode current collector welding point are arranged opposite to the welding end of the welding assembly. The core conveying assembly is used to drive the core to sequentially pass through the negative electrode current collector conveying point, the negative electrode current collector welding point, the core flipping point, the positive electrode current collector conveying point, and the positive electrode current collector welding point.

[0008] In one embodiment, the core conveying assembly includes a drive disk and a load-bearing limiting member. The fixed end of the load-bearing limiting member is mounted and fixed to the drive end of the drive disk. The drive end of the drive disk is used to drive the load-bearing limiting member to move along the core conveying path. The load-bearing limiting end of the load-bearing limiting member is used to limit and fix the core, so as to drive the core to pass sequentially through the negative current collector conveying point, the negative current collector welding point, the core flipping point, the positive current collector conveying point, and the positive current collector welding point.

[0009] In one embodiment, there are multiple load-bearing limiting members, each of which is disposed on the transmission end of the transmission disk. The transmission disk is used to drive each load-bearing limiting member to pass sequentially through each of the working points on the core conveying path, and each working point is provided with a corresponding load-bearing limiting member.

[0010] In one embodiment, the bearing limiting member includes a fixed part and a bearing limiting part that are fixed to each other. The fixed end of the bearing limiting member is disposed on the fixed part. The transmission end of the transmission disk is fixedly connected to the fixed part. The transmission end of the transmission disk is used to drive the fixed part to move relative to the frame. The bearing limiting part is located at the end of the fixed part away from the transmission disk. The bearing limiting part forms a bearing limiting area, which is used to accommodate and limit the winding core.

[0011] In one embodiment, the welding assembly includes a first welding component and a second welding component, both of which are mounted on the frame. The first welding component and the second welding component are respectively disposed on both sides of the flipping assembly. The welding end of the first welding component is positioned opposite to the welding point of the negative current collector, and the welding end of the first welding component is used to perform welding operations on the core located at the welding point of the negative current collector. The welding end of the second welding component is positioned opposite to the welding point of the positive current collector, and the welding end of the second welding component is used to perform welding operations on the core located at the welding point of the positive current collector.

[0012] In one embodiment, the welding assembly further includes a detection element, which includes an electrical performance detector and an alarm. Both the electrical performance detector and the alarm are mounted on the frame. The detection end of the electrical performance detector is disposed on the welding end face of the welding assembly. The detection end of the electrical performance detector is used to detect the welding quality between the current collector and the core. The control end of the electrical performance detector is electrically connected to the control end of the alarm.

[0013] In one embodiment, the battery full-tab current collector welding device further includes a defect removal component, which is mounted on the frame. The core conveying path passes through the removal end of the defect removal component. The working point also includes a defect removal point, which is located downstream of the positive current collector welding point. The defect removal component is used to remove defective cores. The control end of the defect removal component is electrically connected to the control end of the electrical performance detector.

[0014] In one embodiment, the core flipping assembly includes a flipping clamp and a composite drive. The fixed end of the composite drive is mounted on the frame, and the flipping end of the core flipping assembly is disposed on the flipping clamp. The clamping end of the flipping clamp is used to clamp and fix the core located at the core flipping point. The flipping drive end of the composite drive is fixedly connected to the fixed end of the flipping clamp. The flipping drive end of the composite drive is used to drive the flipping clamp to move to the core flipping point, and after clamping and fixing the core at the clamping end of the flipping clamp, it drives the flipping clamp to perform a flipping operation to drive the core to flip 180°.

[0015] A battery production equipment includes the battery full-tab current collector welding device described in any of the above embodiments.

[0016] Compared with the prior art, this disclosure has at least the following advantages: The aforementioned battery all-tab current collector welding device, in which the flipping end of the core flipping assembly is used to flip the core on the core conveying path; the automatic current collector welding mechanism is mounted on the frame, and includes a positive current collector conveying assembly and a negative current collector conveying assembly. The conveying end of the negative current collector conveying assembly, the flipping end of the core flipping assembly, and the conveying end of the positive current collector conveying assembly are sequentially arranged along the core conveying path of the core conveying assembly. When the core on the core conveying path passes the conveying end of the negative current collector conveying assembly, the conveying end of the negative current collector conveying assembly conveys the negative current collector to... The core is attached to the negative end face of the winding core. When the winding core on the winding core conveying path passes the conveying end of the positive current collector conveying assembly, the conveying end of the positive current collector conveying assembly conveys the positive current collector to the positive end face of the winding core and attaches it. The automatic welding mechanism for the current collector also includes a welding assembly. The winding core conveying path passes the welding end of the welding assembly. When the negative current collector is attached to the negative end face of the winding core, the welding end of the welding assembly welds the negative current collector to the negative end face of the winding core. When the positive current collector is attached to the positive end face of the winding core, the welding end of the welding assembly welds the positive current collector to the positive end face of the winding core. The core flipping assembly flips the core after the welding assembly welds the negative current collector to the negative end of the core, so that the positive end face of the core faces the conveying end of the positive current collector conveying assembly. Specifically, when the conveying mechanism conveys the core along the conveying path, the negative current collector conveying assembly first accurately conveys the negative current collector to the negative end face of the core and attaches it, and the welding assembly then completes the welding and fixing of the negative current collector. Subsequently, the core flipping assembly automatically flips the core with the welded negative current collector so that the positive end face of the core accurately faces the positive current collector conveying station, and then the positive current collector conveying assembly completes the final step. Compared to existing automated welding devices for positive current collectors, which require manual flipping of the core and are prone to damaging the positive current collector tabs, the battery full-tab current collector welding device disclosed in this invention not only replaces manual flipping with automated directional flipping, avoiding quality risks such as core collisions, scratches, squeezing, bending, and breakage of the positive current collector tabs caused by manual operation, but also enables continuous automated welding of both positive and negative current collectors. This significantly reduces process time, meets the needs of large-scale mass production, and improves the yield rate of batteries, thereby greatly improving battery production efficiency and quality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a battery all-tab current collector welding device according to an embodiment; Figure 2 for Figure 1 Another perspective schematic diagram of the battery tab current collector welding device shown; Figure 3 for Figure 1 A partial structural schematic diagram of the battery tab current collector welding device shown; Figure 4 for Figure 1 Another partial structural schematic diagram of the battery tab current collector welding device shown; Figure 5 for Figure 4 A partially enlarged schematic diagram of the battery tab current collector welding device shown; Figure 6 for Figure 1 Another partial structural schematic diagram of the battery all-tab current collector welding device shown; Figure 7 for Figure 1 Another partial structural schematic diagram of the battery all-tab current collector welding device shown; Figure 8 for Figure 7 The diagram shows another perspective. Figure 9 for Figure 1 Another partial structural schematic diagram of the battery all-tab current collector welding device shown; Figure 10 for Figure 1 Another partial structural schematic diagram of the battery all-tab current collector welding device shown; Figure 11 This is a schematic diagram of the structural model of the welding device for the battery's full-tab current collector.

[0019] Reference numerals: 10 for battery all-tab current collector welding device; 100 for frame; 200 for core conveying mechanism; 210 for core conveying assembly; 211 for core conveying path; 2111 for negative current collector conveying point; 2112 for negative current collector welding point; 2113 for core flipping point; 2114 for positive current collector conveying point; 2115 for positive current collector welding point; 2116 for core placement point; 21 for core removal point. 17; Defect removal point 2118; Transmission disc 212; Guide rail 2121; Bearing limiting component 213; Positioning groove 2131; Fixing part 2132; Guide pulley 21321; Positioning post 21322; Guide post 21323; Guide groove 21324; Clamping limiter 2133; Clamping arm 21331; Clamping part 21331a; Pivot part 21331b; Connecting through hole 21331b1; Extension Extension 21331c; Bearing roller 21331c1; Clamping area 21331d; Sliding block 21332; Guide groove 21332a; Guide through hole 21332b; Swing positioning assembly 214; Swing drive 2141; Swing rod 21411; Positioning component 2142; Positioning part 21421; Push cylinder 215; Core flipping assembly 220; Flipping clamping component 221; Composite drive 222; Horizontal drive motor 2221; Flipping drive motor 2222; First core clamping transport arm 230; Second core clamping transport arm 240; Automatic welding mechanism for collector plate 300; Positive collector plate conveying assembly 310; Negative collector plate conveying assembly 320; Welding assembly 330; First welded part 331; Second welded part 332; Defect removal assembly 400; Clamping drive arm 410; Defect collection box 420. Detailed Implementation

[0020] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] 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 disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: like Figures 1 to 11 As shown, a battery full-tab current collector welding device 10 of one embodiment includes a frame 100, a core conveying mechanism 200, and a current collector automatic welding mechanism 300. The core conveying mechanism 200 is mounted on the frame 100 and includes a core conveying assembly 210 and a core flipping assembly 220. The core conveying assembly 210 is used to convey cores, and the flipping end of the core flipping assembly 220 is used to flip the cores on the core conveying path 211. The current collector automatic welding mechanism 300 is mounted on the frame 100 and includes a positive current collector conveying assembly 310 and a negative current collector conveying assembly 320. The conveying end of the negative current collector conveying assembly 320, the flipping end of the core flipping assembly 220, and the conveying end of the positive current collector conveying assembly 310 are arranged sequentially along the core conveying path 211 of the core conveying assembly 210. When the core on the core conveying path 211 passes the conveying end of the negative current collector conveying assembly 320, the conveying end of the negative current collector conveying assembly 320 conveys the negative current collector to the negative end face of the core and attaches it. When the core on the core conveying path 211 passes the conveying end of the positive current collector conveying assembly 310, the conveying end of the positive current collector conveying assembly 310 conveys the positive current collector to the positive end face of the core and attaches it.

[0024] In one embodiment, the automatic welding mechanism 300 for the current collector also includes a welding assembly 330. The core conveying path 211 passes through the welding end of the welding assembly 330. When the negative current collector is attached to the negative end face of the core, the welding end of the welding assembly 330 welds the negative current collector to the negative end face of the core. When the positive current collector is attached to the positive end face of the core, the welding end of the welding assembly 330 welds the positive current collector to the positive end face of the core. After the welding assembly 330 welds the negative current collector to the negative end face of the core, the flipping end of the core flipping assembly 220 flips the core so that the positive end face of the core faces towards the conveying end of the positive current collector conveying assembly 310.

[0025] The aforementioned battery all-tab current collector welding device 10 includes a core conveying assembly 210 for conveying cores, and a core flipping assembly 220 for flipping cores on the core conveying path 211. The current collector automatic welding mechanism 300 is mounted on the frame 100 and includes a positive current collector conveying assembly 310 and a negative current collector conveying assembly 320. The conveying end of the negative current collector conveying assembly 320, the flipping end of the core flipping assembly 220, and the conveying end of the positive current collector conveying assembly 310 are sequentially arranged along the core conveying path 211 of the core conveying assembly 210. When the core on the core conveying path 211 passes the conveying end of the negative electrode current collector conveying assembly 320, the conveying end of the negative electrode current collector conveying assembly 320 conveys the negative electrode current collector to the negative end face of the core and attaches it. When the core on the core conveying path 211 passes the conveying end of the positive electrode current collector conveying assembly 310, the conveying end of the positive electrode current collector conveying assembly 310 conveys the positive electrode current collector to the positive end face of the core and attaches it. The current collector automatic welding mechanism 300 also includes a welding assembly 330, and the core conveying path 211 passes through the welding assembly 330. When the negative current collector is attached to the negative end face of the core, the welding end of the welding assembly 330 welds the negative current collector to the negative end face of the core. When the positive current collector is attached to the positive end face of the core, the welding end of the welding assembly 330 welds the positive current collector to the positive end face of the core. Furthermore, after the welding assembly 330 welds the negative current collector to the negative end face of the core, the flipping end of the core flipping assembly 220 flips the core so that the positive end face of the core faces the positive current collector. (This is followed by the mention of the conveying assembly 310.) Conveying end; specifically, when the conveying mechanism conveys the core along the core conveying path 211, the negative electrode current collector conveying assembly 320 first accurately conveys the negative electrode current collector to the negative end face of the core and attaches it, and the welding assembly 330 then completes the welding and fixing of the negative electrode current collector; subsequently, the core flipping assembly 220 automatically flips the core with the welded negative electrode current collector, so that the positive end face of the core accurately faces the positive electrode current collector conveying station, and then the positive electrode current collector conveying assembly 310 completes the conveying, attaching and welding fixing of the positive electrode current collector, compared with the prior art The drawbacks of traditional automated current collector welding devices, such as the need for manual core flipping and the high risk of damage to the positive current collector tabs, are addressed by the battery full-tab current collector welding device 10 disclosed herein. This device not only replaces manual flipping with automated directional flipping, avoiding quality hazards such as core collisions, positive tab scraping, squeezing, bending, and breakage caused by manual operation, but also enables continuous automated welding of the positive and negative current collectors. This significantly reduces process time, meets the needs of large-scale mass production, and improves the yield rate of batteries, thereby greatly improving battery production efficiency and quality.

[0026] like Figures 1 to 6As shown, in one embodiment, the core conveying path 211 is provided with multiple working points. These working points, sequentially along the core conveying path 211, are: negative current collector conveying point 2111, negative current collector welding point 2112, core flipping point 2113, positive current collector conveying point 2114, and positive current collector welding point 2115. The negative current collector conveying point 2111 is positioned opposite to the conveying end of the negative current collector conveying assembly 320. The core flipping point 2113 is positioned opposite to the flipping end of the core flipping assembly 220. The negative current collector welding points 2112 and 2115 are both positioned opposite to the welding end of the welding assembly 330. The core conveying assembly 210 drives the core to sequentially pass through the negative current collector conveying point 2111 and the negative current collector welding point 2112. 2. The core flipping point 2113, the positive current collector conveying point 2114, and the positive current collector welding point 2115 are designed so that when the conveying mechanism drives the core along the conveying path to pass through the negative current collector conveying point 2111, the negative current collector welding point 2112, the core flipping point 2113, the positive current collector conveying point 2114, and the positive current collector welding point 2115 in sequence, the negative current collector conveying component 320 first accurately conveys the negative current collector to the negative end face of the core and attaches it, and the welding component 330 then completes the welding and fixing of the negative current collector; then the core flipping component 220 automatically flips the core with the welded negative current collector so that the positive end face of the core is accurately facing the positive current collector conveying station, and then the positive current collector conveying component 310 completes the conveying, attaching, and welding fixing of the positive current collector.

[0027] It should be noted that the specific structure and operation of the negative current collector conveying assembly 320 and the positive current collector conveying assembly 310 are existing technologies, such as patent CN116247388B, and will not be elaborated further here.

[0028] like Figures 1 to 4As shown, in one embodiment, the core conveying assembly 210 includes a drive disk 212 and a load-bearing limiting member 213. The fixed end of the load-bearing limiting member 213 is fixed to the drive end of the drive disk 212. The drive end of the drive disk 212 is used to drive the load-bearing limiting member 213 to move along the core conveying path 211. The load-bearing limiting end of the load-bearing limiting member 213 is used to limit and fix the core, so that the core sequentially passes through the negative current collector conveying point 2111, the negative current collector welding point 2112, the core flipping point 2113, the positive current collector conveying point 2114, and the positive current collector welding point 2115. When the drive disk 212 drives the core sequentially through the negative current collector conveying point... When welding the negative current collector at point 2111, point 2112, core flipping point 2113, point 2114, and point 2115, the negative current collector conveying assembly 320 first accurately conveys the negative current collector to the negative end face of the core and attaches it. Then, the welding assembly 330 completes the welding and fixing of the negative current collector. Subsequently, the core flipping assembly 220 automatically flips the core of the welded negative current collector so that the positive end face of the core is accurately facing the positive current collector conveying station. Then, the positive current collector conveying assembly 310 completes the conveying, attaching, and welding fixing of the positive current collector, thereby greatly improving the automation level of the battery all-tab current collector welding device 10.

[0029] like Figures 1 to 4 As shown, in one embodiment, there are multiple load-bearing limiting members 213. All load-bearing limiting members 213 are disposed on the transmission end of the transmission disk 212. The transmission disk 212 is used to drive each load-bearing limiting member 213 to pass through each working point on the core conveying path 211 in sequence. Each working point is provided with a corresponding load-bearing limiting member 213 so that the cores at each working point can be processed and conveyed synchronously, thereby greatly improving the production efficiency of the battery.

[0030] like Figures 1 to 3 As shown, in one embodiment, the core conveying path 211 is a straight path to reduce the conveying distance between adjacent working points, shorten the transportation time of the core between adjacent working points, and further improve the production quality of the battery.

[0031] It should be noted that the transmission method and transmission structure of the transmission disc 212 are existing technologies, and will not be elaborated further here.

[0032] like Figures 1 to 6As shown, in one embodiment, the core conveying mechanism 200 further includes a first core clamping and conveying arm 230 and a second core clamping and conveying arm 240. Both the first core clamping and conveying arm 230 and the second core clamping and conveying arm 240 are mounted on the frame 100. The core conveying path 211 sequentially passes through the clamping and conveying ends of the first core clamping and conveying arm 230 and the second core clamping and conveying arm 240. The working points on the core conveying path 211 also include a core placement point 2116 and a core removal point 2117. The core placement point 2116 is located at the beginning of the core conveying path 211, and the clamping and conveying end of the first core clamping and conveying arm 230 is opposite to the core placement point 2116. The core removal point 2117 is located at the end of the core conveying path 211. The second core clamping and conveying arm 240... The clamping and conveying end of the first core clamping and conveying arm 230 is positioned opposite to the core removal point 2117. When the bearing limiting member 213 enters the core placement point 2116, the clamping and conveying end of the first core clamping and conveying arm 230 will clamp and remove the core from the core box and transport it to the bearing limiting end of the bearing limiting member 213. When the bearing limiting member 213 drives the core after the welding operation to the core removal point 2117, the clamping and conveying end of the second core clamping and conveying arm 240 will clamp and remove the core from the bearing limiting end of the bearing limiting member 213 and transport it to the next process. This realizes the automation function of core picking and placing, greatly improves the ease of use of the battery all-tab current collector welding device 10, and effectively avoids the problem of core collision caused by manual operation, further improving the production quality of the battery.

[0033] It should be noted that the specific clamping and conveying methods and structures of the first core clamping and conveying arm 230 and the second core clamping and conveying arm 240 are existing technologies and will not be elaborated further here.

[0034] like Figures 3 to 5As shown, in one embodiment, the core conveying assembly 210 further includes a swing positioning assembly 214. The swing positioning assembly 214 includes a swing drive member 2141 and a plurality of positioning members 2142. The fixed end of the swing drive member 2141 is fixed to the frame 100, and the driving end of the swing drive member 2141 is provided with a swing rod 21411. The swing rod 21411 is parallel to the core conveying path 211. The connecting part of each positioning member 2142 is fixed to the swing rod 21411. The driving end of the driving component 2141 is used to drive the swing arm 21411 to swing back and forth relative to the frame 100, so as to drive the positioning part 21421 of the positioning component 2142 to move closer or further away from the bearing limiting component 213. Each working point on the core conveying path 211 is provided with a corresponding positioning component 2142, and each bearing limiting component 213 is formed with a positioning groove 2131 that is opposite to the positioning part 21421 of the positioning component 2142. When the transmission end of the transmission disc 212 drives... When the moving bearing limiter 213 moves to the corresponding working point on the core conveying path 211, the swing drive 2141 drives the positioning part 21421 of the positioning part 2142 to engage in the positioning groove 2131, so that each positioning part 2142 can reliably limit the bearing limiter 213 in the corresponding working point, so that the bearing limiter 213 can be accurately positioned at the preset position on the core conveying path 211. This not only improves the alignment accuracy between the core and the collector plate, but also prevents the bearing limiter 213 from shaking or even shifting during the welding process, thus ensuring the welding quality between the core and the collector plate. When it is necessary to switch working points, the swing drive 2141 drives the positioning part 21421 of the positioning part 2142 to disengage from the positioning groove 2131, releasing the limiting constraint. The transmission disc 212 can then drive the bearing limiter 213 to continue moving along the core conveying path 211 to the next working point, so as to drive the corresponding core into the next working point.

[0035] like Figures 5 to 9 As shown, in one embodiment, the bearing limiting member 213 includes a fixing part 2132 and a clamping limiting device 2133 that are fixed to each other. The fixing end of the bearing limiting member 213 is disposed on the fixing part 2132. The transmission end of the transmission disk 212 is fixedly connected to the fixing part 2132. The transmission end of the transmission disk 212 is used to drive the fixing part 2132 to move relative to the frame 100. A bearing surface is formed on the side of the fixing part 2132 away from the transmission disk 212. The clamping limiting device 2133 is installed on the bearing surface. The bearing surface is used to support the core. The clamping end of the clamping limiting device 2133 is used to clamp and fix the core, so that the core can be reliably limited on the bearing surface by the joint action of the fixing part 2132 and the clamping limiting device 2133. This effectively prevents the core from shaking or even displacing due to the influence of external vibration during the welding process, which greatly improves the welding accuracy between the core and the current collector, thereby greatly improving the production quality of the battery.

[0036] like Figures 4 to 8 As shown, in one embodiment, a guide rail portion 2121 is provided on the outer periphery of the transmission disk 212. Each bearing limiting member 213 has two oppositely arranged guide pulleys 21322 on its fixing portion 2132. A guide groove 21324 is formed between the two oppositely arranged guide pulleys 21321. The fixing portion 2132 of each bearing limiting member 213 is engaged and limited on the guide rail portion 2121 through the guide groove 21324, and each guide pulley 21321 rolls against the guide rail portion 2121, so that the transmission end of the transmission disk 212 drives the bearing limiting member 213 to slide along the outer periphery of the transmission disk 212. This not only makes the bearing limiting member 213 more securely limited on the transmission disk 212, but also allows the bearing limiting member 213 to slide stably along the guide rail portion 2121 of the transmission disk 212 through the guide pulleys 21321, thereby greatly improving the operational stability of the automatic welding equipment for the battery full-tab current collector.

[0037] like Figures 5 to 9 As shown, in one embodiment, the clamping limiter 2133 includes two clamping arms 21331. Each clamping arm 21331 includes a clamping portion 21331a, a pivot portion 21331b, and an extension portion 21331c connected in sequence. The clamping portions 21331a of the two clamping arms 21331 are arranged opposite to each other, and a clamping area 21331d is formed between the clamping portions 21331a of the two clamping arms 21331. The pivot portion 21331b of the two clamping arms 21331 is rotatably connected to the fixing portion 2132. An elastic member is provided between the two clamping portions 21331a. The two ends of the elastic member are elastically connected to the two clamping portions 21331a respectively and are always in a stretched state, so as to drive the two clamping portions 21331a to jointly clamp the core located in the clamping area 21331d, so that... The clamping limiter 2133 can clamp cores of different sizes by matching the two clamping arms 21331 with the elastic element. At the same time, the elastic element can also use its own elastic properties to buffer the squeezing force between the two clamping parts 21331a and the core, reducing the risk of damage or even destruction of the core due to excessive squeezing force. Moreover, by simply pressing the extensions 21331c of the two clamping arms 21331 towards each other, the two extensions 21331c can use the corresponding pivot part 21331b as a fulcrum to drive the corresponding clamping parts 21331a to overcome the elastic properties of the elastic element and move away from each other, effectively reducing the difficulty of picking up and putting down the core, and thus greatly improving the core conveying stability and ease of use of the battery full tab current collector welding device 10.

[0038] like Figures 5 to 9As shown, in one embodiment, the clamping limiter 2133 further includes a sliding block 21332. A guide groove 21332a is formed on one side of the sliding block 21332 adjacent to the extension 21331c of the clamping arm 21331. Both extensions 21331c are partially disposed within the guide groove 21332a and abut against the inner walls of both sides of the guide groove 21332a. The width between the inner walls of the guide groove 21332a gradually decreases in the direction away from the clamping arm 21331. The sliding block 21332 is slidably disposed on the side of the fixed part 2132 away from the transmission disk 212. When the sliding block 21332 slides towards the extension 21331c, the two extensions 21331c gradually approach the guide groove 21332a. The bottom of the groove 1332a is squeezed by the inner walls on both sides of the guide groove 21332a, causing the two extensions 21331c to move closer together with the corresponding pivot 21331b as the fulcrum. Through the lever action, the corresponding clamping parts 21331a overcome the elastic restoring force of the elastic element and move away from each other, thereby causing the clamping end of the clamping limiter 2133 to be in an open state. When the sliding block 21332 slides away from the extension 21331c, the two extensions 21331c gradually move away from the bottom of the guide groove 21332a. The two clamping parts 21331a move closer together under the elastic restoring action of the elastic element, thereby gradually reducing the distance between the two clamping parts 21331a, thereby achieving the clamping limit of the core.

[0039] like Figure 9 As shown, in one embodiment, the guide groove 21332a has a V-shaped structure so that the inner walls on both sides of the guide groove 21332a can form guide slopes, thereby forming a guiding and squeezing effect on the extensions 21331c of the two clamping arms 21331.

[0040] like Figure 9 As shown, in one embodiment, each of the two extensions 21331c is provided with a bearing roller 21331c1, and the bearing rollers 21331c1 on the two extensions 21331c are both located in the guide groove 21332a, so as to effectively reduce the frictional resistance between the extension 21331c and the side wall of the guide groove 21332a, reduce the wear between the extension 21331c and the side wall of the guide groove 21332a, and thus improve the service life of the clamping limiter 2133.

[0041] like Figure 9As shown, in one embodiment, the fixing part 2132 has two relatively parallel and spaced positioning posts 21322 protruding on one side adjacent to the clamping limiter 2133. The pivot part 21331b of the two clamping arms 21331 is formed with a connecting through hole 21331b1. Each connecting through hole 21331b1 is correspondingly provided with each positioning post 21322. Each positioning post 21322 passes through the corresponding connecting through hole 21331b1 and slides against the hole wall of the connecting through hole 21331b1, so that the clamping arm 21331 can rotate relative to the fixing part 2132 with the positioning post 21322 as the rotation center. This allows the two clamping arms 21331 to open or clamp the clamping end of the clamping limiter 2133 through the mutual cooperation of the elastic element and the sliding block 21332.

[0042] like Figure 9 As shown, in one embodiment, the two ends of the elastic member are respectively connected to one end of the two clamping portions 21331a adjacent to the corresponding pivot portion 21331b, so as to avoid motion interference between the core and the elastic member when the core is picked up or put down, so that the core can be smoothly taken out or placed from the clamping area 21331d.

[0043] In one embodiment, the elastic element is a torsion spring or a silicone element, so that the elastic element can have better elastic properties.

[0044] like Figure 9 As shown, in one embodiment, the clamping portion 21331a, the pivot portion 21331b, and the extension portion 21331c of each clamping arm 21331 are integrally formed to improve the structural compactness of the clamping arm 21331.

[0045] like Figures 7 to 9 As shown, in one embodiment, a guide hole 21332b is formed on one side of the sliding block 21332 adjacent to the clamping limiter 2133, and a guide post 21323 is formed on the fixed part 2132 opposite to the guide hole 21332b. The extending direction of the guide post 21323 is parallel to the length direction of the clamping limiter 2133. The guide post 21323 passes through the guide hole 21332b and slides against the hole wall of the guide hole 21332b, so that the sliding block 21332 can slide relative to the clamping arm 21331 along the guiding direction of the guide post 21323 under the interaction of the guide post 21323 and the guide hole 21332b, so that the sliding block 21332 can move closer to or away from the clamping arm 21331 relative to the fixed part 2132.

[0046] like Figure 3 and Figure 9As shown, in one embodiment, the core conveying assembly 210 further includes a push cylinder 215, which is fixed on the frame 100. There are multiple push cylinders 215, with corresponding push cylinders 215 positioned at the core placement point 2116, the core flipping point 2113, and the core removal point 2117. The pushing end of each push cylinder 215 is opposite to the sliding block 21332 of the bearing limiting member 213 located at the corresponding working point. The push cylinder 215 pushes the sliding block 21332 towards the clamping limiter 2133. When the push cylinder 215 pushes the sliding block 21332 towards the clamping limiter 2133, the two extensions 213... 31c gradually approaches the bottom of the guide groove 21332a and, under the squeezing action of the inner walls on both sides of the guide groove 21332a, moves closer to each other. This causes the two extensions 21331c to use the corresponding pivot 21331b as a fulcrum, and through leverage, drive the corresponding clamping parts 21331a to overcome the elastic restoring force of the elastic element and move away from each other. This causes the clamping end of the clamping limiter 2133 to be in an open state, so as to facilitate the removal or placement of the core. When the pushing cylinder 215 stops pushing, under the elastic action of the elastic element, the two clamping parts 21331a move closer to each other, while the two extensions 21331c gradually move away from the bottom of the guide groove 21332a and move away from each other, so as to achieve clamping and limiting of the core.

[0047] like Figure 3 and Figure 9 As shown, in one embodiment, the control end of each push cylinder 215 is electrically connected to the control end of the transmission disk 212. Whenever the bearing limiter 213 enters the corresponding working position, the corresponding push cylinder 215 will push the sliding block 21332 to move towards the clamping limiter 2133, so that the clamping end of the clamping limiter 2133 is in an open state, so as to facilitate the flipping or picking up and putting down of the core. This not only further improves the automation level of the battery full tab current collector welding device 10, but also effectively avoids the problem of core collision caused by manual operation, thereby greatly improving the production quality of the battery and the ease of use of the battery full tab current collector welding device 10.

[0048] like Figures 2 to 6As shown, in one embodiment, the welding assembly 330 includes a first welding component 331 and a second welding component 332. Both the first welding component 331 and the second welding component 332 are mounted on the frame 100. The first welding component 331 and the second welding component 332 are respectively disposed on both sides of the flipping assembly. The welding end of the first welding component 331 is opposite to the welding point 2112 of the negative current collector, and the welding end of the first welding component 331 is used to perform welding operations on the core located at the welding point 2112 of the negative current collector. The welding end of the second welding component 332 is opposite to the welding point 2115 of the positive current collector. The welding end of component 332 is used to perform welding operations on the core located at the welding point 2115 of the positive current collector. When the core enters the welding point 2112 of the negative current collector, the welding end of the first welding component 331 will automatically weld the negative current collector to the negative end face of the core. When the core enters the welding point 2115 of the positive current collector, the welding end of the second welding component 332 will automatically weld the positive current collector to the positive end face of the core. This greatly improves the automation level of the battery full tab current collector welding device 10, thereby greatly improving the ease of use of the battery full tab current collector welding device 10.

[0049] like Figures 1 to 6 As shown, in one embodiment, the automatic welding mechanism 300 for the current collector also includes an electrical performance detector (not shown) and an alarm (not shown). The electrical performance detector is disposed on the welding assembly 330, and the alarm is mounted on the frame 100. The detection end of the electrical performance detector is disposed on the welding end face of the welding assembly 330. The detection end of the electrical performance detector is used to detect the welding quality between the current collector and the core. The control end of the electrical performance detector is electrically connected to the control end of the alarm. When the detection end of the electrical performance detector detects a welding quality problem between the current collector and the core, the control end of the electrical performance detector will send an alarm signal to the alarm. After receiving the alarm signal, the alarm will sound an alarm to notify the production personnel to discover the problem in time. In this embodiment, the electrical performance detectors are respectively disposed on the first welding component 331 and the second welding component 332. Both the first welding component 331 and the second welding component 332 are resistance welding machines, so that the welding assembly 330 can not only reliably weld the current collector to the core, but also detect the welding quality between the current collector and the core to ensure the production quality of the battery.

[0050] It should be noted that the function and structure of the resistance welding machine for detecting the welding quality between the current collector and the core are existing technologies, and will not be elaborated further here.

[0051] like Figures 1 to 6As shown, in one embodiment, the battery full-tab current collector welding device 10 further includes a defect removal component 400. The defect removal component 400 is mounted on the frame 100. The core conveying path 211 passes through the removal end of the defect removal component 400. The working point also includes a defect removal point 2118, which is located downstream of the positive current collector welding point 2115. The defect removal component 400 is used to remove defective cores. The control end of the defect removal component 400 is electrically connected to the control end of the electrical performance detector. When the electrical performance detector detects the welding quality between the current collector and the core, if the detection result is unqualified, the core is determined to be defective, and the position information of the defective core is input to the control end of the defect removal component 400. When the defective core passes through the defect removal point 2118, the defect removal component 400 will remove the core to improve the production quality of the battery.

[0052] like Figure 3 and Figure 6 As shown, in one embodiment, the defect removal assembly 400 includes a clamping drive arm 410, and a push cylinder 215 is positioned at the defect removal point 2118. The push end of the push cylinder 215 is opposite to the sliding block 21332 of the bearing limit member 213 within the defect removal point 2118. The clamping drive end of the clamping drive arm 410 is used to clamp the defective core and remove it from the core conveying path 211. When the defective core enters the defect removal point 2118, the push end of the push cylinder 215 will push the sliding block 21332 of the bearing limit member 213 within the defect removal point 2118 to open the clamping limit member 2133. At the same time, the clamping drive arm 410 will clamp the defective core and move it out of the core conveying path 211, so that the battery full tab current collector welding device 10 can automatically complete the quality inspection of the core and the removal of defective products through the detection mechanism, effectively improving the production quality of the battery.

[0053] like Figure 3 and Figure 6 As shown, in one embodiment, the defective product removal component 400 further includes a defective product collection box 420, which is used to collect defective cores so that after the clamping drive arm 410 moves the defective cores out of the core conveying path 211, they can be placed into the defective product collection box 420 for collection, so as to facilitate subsequent rework operations.

[0054] like Figure 10As shown, in one embodiment, the core flipping assembly 220 includes a flipping clamping member 221 and a composite driving member 222. The fixed end of the composite driving member 222 is mounted on the frame 100, and the flipping end of the core flipping assembly 220 is disposed on the flipping clamping member 221. The clamping end of the flipping clamping member 221 is used to clamp the core fixed at the core flipping point 2113. The flipping driving end of the composite driving member 222 is fixedly connected to the fixed end of the flipping clamping member 221, and the flipping driving end of the composite driving member 222 is used to drive the flipping clamping member 221 to move to the core flipping point 2113. 3. After clamping and fixing the core at the clamping end of the flipping clamp 221, drive the flipping clamp 221 to perform a flipping operation, so as to drive the core to flip 180°, thereby realizing the automated orientation flipping of the core without manual intervention. This effectively avoids problems such as core bumps and damage caused by manual flipping, and at the same time ensures the accuracy of the core's flipping position and the stability of its posture. After flipping, the core can be accurately reset to the bearing limit member 213, providing a stable assembly foundation for the subsequent conveying and welding of the positive current collector, thereby improving the welding accuracy and welding efficiency between the core and the current collector.

[0055] like Figure 10 As shown, in one embodiment, the composite drive unit 222 includes a horizontal drive motor 2221 and a flip drive motor 2222. The fixed end of the horizontal drive motor 2221 is fixed to the frame 100, and the drive end of the horizontal drive motor 2221 is connected to the fixed end of the flip drive motor 2222. The drive end of the flip drive motor 2222 is connected to the fixed end of the flip clamping member 221. When it is necessary to flip the core located at the core flipping point 2113, the drive end of the horizontal drive motor 2221 first drives the flip drive motor 2222 and the flip clamping member 221 to move to... The core is flipped at point 2113; after the core is clamped and fixed by the flipping clamp 221, the horizontal drive motor 2221 drives the flipping clamp 221 to take the core away from the bearing limit member 213, and the flipping drive motor 2222 drives the core to complete a 180° flip relative to the frame 100; finally, the drive end of the horizontal drive motor 2221 resets the flipped core to the preset position of the bearing limit member 213 and controls the clamping end of the flipping clamp 221 to open, so as to complete the core flipping operation, thereby effectively improving the core flipping efficiency and the automation level of the battery all-tab current collector welding device 10.

[0056] It should be noted that the driving principle and specific structure of the horizontal drive motor 2221 and the tilt drive motor 2222 are existing technologies, and will not be elaborated further here.

[0057] This disclosure also provides a battery production equipment, including the battery full tab current collector welding device 10 described in any of the above embodiments.

[0058] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A welding device for a battery full-tab current collector, characterized in that, Includes the frame, core conveying mechanism, and automatic welding mechanism for the manifold; The core conveying mechanism is mounted on the frame. The core conveying mechanism includes a core conveying assembly and a core flipping assembly. The core conveying assembly is used to convey cores, and the flipping end of the core flipping assembly is used to flip the cores on the core conveying path. The automatic welding mechanism for the current collector is mounted on the frame. The automatic welding mechanism for the current collector includes a positive current collector conveying assembly and a negative current collector conveying assembly. The conveying end of the negative current collector conveying assembly, the flipping end of the core flipping assembly, and the conveying end of the positive current collector conveying assembly are sequentially arranged along the core conveying path of the core conveying assembly. When the core on the core conveying path passes the conveying end of the negative current collector conveying assembly, the conveying end of the negative current collector conveying assembly conveys the negative current collector to the negative end face of the core and attaches it. When the core on the core conveying path passes the conveying end of the positive current collector conveying assembly, the conveying end of the positive current collector conveying assembly conveys the positive current collector to the positive end face of the core and attaches it. The automatic welding mechanism for the current collector also includes a welding assembly. The core conveying path passes through the welding end of the welding assembly. When the negative current collector is attached to the negative end face of the core, the welding end of the welding assembly welds the negative current collector to the negative end face of the core. When the positive current collector is attached to the positive end face of the core, the welding end of the welding assembly welds the positive current collector to the positive end face of the core. After the welding assembly welds the negative current collector to the negative end face of the core, the flipping end of the core flipping assembly flips the core so that the positive end face of the core faces towards the conveying end of the positive current collector conveying assembly.

2. The battery full-tab current collector welding device according to claim 1, characterized in that, The core conveying path is provided with multiple working points, which are sequentially arranged along the core conveying path as follows: negative electrode current collector conveying point, negative electrode current collector welding point, core flipping point, positive electrode current collector conveying point, and positive electrode current collector welding point. The negative electrode current collector conveying point is arranged opposite to the conveying end of the negative electrode current collector conveying assembly. The core flipping point is arranged opposite to the flipping end of the core flipping assembly. The negative electrode current collector welding point and the positive electrode current collector welding point are both arranged opposite to the welding end of the welding assembly. The core conveying assembly is used to drive the core to sequentially pass through the negative electrode current collector conveying point, the negative electrode current collector welding point, the core flipping point, the positive electrode current collector conveying point, and the positive electrode current collector welding point.

3. The battery full-tab current collector welding device according to claim 2, characterized in that, The core conveying assembly includes a transmission disk and a load-bearing limiting member. The fixed end of the load-bearing limiting member is installed and fixed to the transmission end of the transmission disk. The transmission end of the transmission disk is used to drive the load-bearing limiting member to move along the core conveying path. The load-bearing limiting end of the load-bearing limiting member is used to limit and fix the core, so as to drive the core to pass sequentially through the negative current collector conveying point, the negative current collector welding point, the core flipping point, the positive current collector conveying point, and the positive current collector welding point.

4. The battery full-tab current collector welding device according to claim 3, characterized in that, The number of the bearing limiting components is multiple, and the multiple bearing limiting components are all disposed on the transmission end of the transmission disk. The transmission disk is used to drive each bearing limiting component to pass through each working point on the core conveying path in sequence, and each working point is provided with a corresponding bearing limiting component.

5. The battery full-tab current collector welding device according to claim 3, characterized in that, The load-bearing limiting member includes a fixed part and a load-bearing limiting part that are fixed to each other. The fixed end of the load-bearing limiting member is located on the fixed part. The transmission end of the transmission disk is fixedly connected to the fixed part. The transmission end of the transmission disk is used to drive the fixed part to move relative to the frame. The load-bearing limiting part is located at the end of the fixed part away from the transmission disk. The load-bearing limiting part forms a load-bearing limiting area, which is used to accommodate and limit the winding core.

6. The battery full-tab current collector welding device according to claim 2, characterized in that, The welding assembly includes a first welding component and a second welding component. Both the first welding component and the second welding component are mounted on the frame and are respectively disposed on both sides of the flipping assembly. The welding end of the first welding component is positioned opposite to the welding point of the negative current collector and is used to perform welding operations on the core located at the welding point of the negative current collector. The welding end of the second welding component is positioned opposite to the welding point of the positive current collector and is used to perform welding operations on the core located at the welding point of the positive current collector.

7. The battery full-tab current collector welding device according to claim 2, characterized in that, The welding assembly also includes a testing component, which includes an electrical performance detector and an alarm. Both the electrical performance detector and the alarm are mounted on the frame. The testing end of the electrical performance detector is located on the welding end face of the welding assembly. The testing end of the electrical performance detector is used to detect the welding quality between the current collector and the core. The control end of the electrical performance detector is electrically connected to the control end of the alarm.

8. The battery full-tab current collector welding device according to claim 7, characterized in that, The battery full-tab current collector welding device also includes a defect removal component, which is installed on the frame. The core conveying path passes through the removal end of the defect removal component. The working point also includes a defect removal point, which is located downstream of the positive current collector welding point. The defect removal component is used to remove defective cores. The control end of the defect removal component is electrically connected to the control end of the electrical performance detector.

9. The battery full-tab current collector welding device according to claim 2, characterized in that, The core flipping assembly includes a flipping clamp and a composite drive. The fixed end of the composite drive is mounted on the frame. The flipping end of the core flipping assembly is located on the flipping clamp. The clamping end of the flipping clamp is used to clamp and fix the core located at the core flipping point. The flipping drive end of the composite drive is fixedly connected to the fixed end of the flipping clamp. The flipping drive end of the composite drive is used to drive the flipping clamp to move to the core flipping point, and after clamping and fixing the core at the clamping end of the flipping clamp, it drives the flipping clamp to perform a flipping operation to drive the core to flip 180°.

10. A battery manufacturing apparatus, characterized in that, The battery full-tab current collector welding device includes any one of claims 1 to 9.

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