A laser welding and sealing device for large cylindrical lithium batteries with full tabs

Abstract

The present invention relates to the technical field of production of large cylindrical lithium batteries with full tabs, and in particular to a laser welding and sealing device for large cylindrical lithium batteries with full tabs. The device comprises a main frame and a linear conveyor assembly disposed on the main frame; loading and unloading manipulators are disposed on both sides of the linear conveyor assembly; a code scanning mechanism for detecting whether there is a battery on a fixture, a positioning module for lateral positioning of the battery, a welding assembly for welding the battery housing to the box cover, a short-circuit detection assembly for detecting the battery circuit after welding, and a CCD detection assembly for obtaining battery surface information are sequentially arranged on the main frame along the length direction of the linear conveyor assembly; and a ring line assembly for conveying the battery is fixed at both ends. When the present invention is used, the structure realizes online positioning, welding, circuit testing, and appearance testing of the battery. During the entire process, the battery does not require manual positioning, thereby improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of production of large cylindrical lithium batteries with full tabs, and in particular to a laser welding and sealing device for large cylindrical lithium batteries with full tabs. Background Art

[0002] Full-tab large cylindrical technology offers significant advantages in performance, cost, and safety, pushing the optimal balance between energy density, cost, and safety to a new level. While ensuring the safety of the entire battery pack, it can increase the size of individual cells, improve space utilization, and extend the vehicle's range. While ensuring energy density, full-tab technology optimizes the structural design of large cylindrical batteries, significantly reducing impedance and tripling fast-charging performance compared to conventional single-tab batteries. Currently, battery welding, circuit testing, and appearance inspection are performed step by step at separate workstations. This means that the battery must be manually repositioned at each workstation, resulting in low production efficiency and difficulty meeting current production needs. Summary of the Invention

[0003] The purpose of the present invention is to provide a laser welding and sealing device for large cylindrical lithium batteries with full tabs in view of the defects and shortcomings of the prior art.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] The laser welding and sealing equipment for large cylindrical lithium batteries with full tabs described in the present invention includes a main frame and a linear conveyor line assembly arranged on the main frame; loading and unloading robots are provided on both sides of the linear conveyor line assembly; a scanning mechanism for detecting whether there is a battery on a fixture, a positioning module for lateral positioning of the battery, a welding assembly for welding the battery shell and the box cover, a short-circuit detection assembly for detecting the battery circuit after welding, and a CCD detection assembly for obtaining battery surface information are arranged in sequence on the main frame along the length direction of the linear conveyor line assembly; and a ring line assembly for conveying batteries is fixed at both ends.

[0006] Furthermore, the short-circuit detection assembly includes a detection base plate, the top of the detection base plate is connected to the first slide and the second slide by screws, the first vertical plate is fixed at both ends of the top of the first slide, the second vertical plate is fixed at both ends of the top of the second slide, a first clamping assembly is provided between the tops of the two first vertical plates, and a second clamping assembly is provided between the tops of the two second vertical plates, the first clamping assembly and the second clamping assembly are used in conjunction with each other to realize clamping and positioning action; the first clamping assembly includes a first horizontal plate, the first horizontal plate is fixedly connected between the tops of the two first vertical plates, the top of the first horizontal plate is slidably connected to the first push plate by a guide rail, one end of the top of the first horizontal plate is fixedly connected to the L-shaped plate, the side of the L-shaped plate away from the second vertical plate is fixedly installed with a first cylinder, the side of the first push plate close to the second vertical plate is equidistantly fixedly connected to the first fixing seat, and the side of the first fixing seat away from the L-shaped plate is fixedly connected to the first top block.

[0007] The top of the second sliding plate is fixedly connected to the first sliding plate, and the second sliding plate is fixedly connected to the first sliding plate by the guide rail. The two first fixing bars are slidably connected on one side where the two first fixing bars are close to each other, and the top of the detection base plate and both sides of the second slide plate are fixedly connected to the second fixing bar, and both sides of the second slide plate are slidably connected to the side where the two second fixing bars are close to each other; two first positioning holes are provided at both ends of the top of the first slide plate and the second slide plate, and second positioning holes are equidistantly provided on the top of the detection base plate and on one side of the first fixing bar and the second fixing bar for use with the first positioning holes; two mounting holes are provided at both ends of the top of the detection base plate, and the top of the detection base plate and on one side of the first slide plate and the second slide plate are fixedly connected to the limiting block; a scale line is provided on the top of one of the first fixing bar and the second fixing bar.

[0008] Furthermore, the detection assembly includes a detection mechanism, which is used to identify product information. A plurality of spaced-apart clamping mechanisms are provided on one side of the detection mechanism, and a plurality of rotating mechanisms are provided on the lower side of the clamping mechanism. Each rotating mechanism is equipped with a corresponding lifting mechanism.

[0009] Furthermore, the clamping mechanism includes a pressure wheel, a cylinder, and a mounting seat, the pressure wheel is arranged on the mounting seat, and the cylinder is connected to the mounting seat; the rotating mechanism includes at least four driving wheels, at least one of which is connected to the rotating motor; the driving wheels are arranged as a detection active wheel and a detection driven wheel, the detection active wheel is connected to the rotating motor, the detection driven wheel is located on the opposite side of the detection active wheel, and the detection driven wheel and the detection active wheel are located in the same plane and are arranged in parallel; the detection active wheel and the detection driven wheel are both provided with rubber rings; a bolt adjustment assembly is provided on the detection mechanism; the detection mechanism is configured as a CCD detector.

[0010] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0011] Furthermore, the translation module includes a first transverse slide rail, a connecting slide, a first linear module and a lifting support plate, the first linear modules are arranged on one side of the corresponding base plate, one side of the first linear module is rotatably connected to the second roller, the first transverse slide rail is fixedly connected to the top of the lifting beam, a fixed frame is fixedly connected between the tops of the two fixed columns, the connecting slide is slidably connected to the top of the first transverse slide rail, one end of the bottom of the connecting slide is fixedly connected to the vertical plate, a roller groove is provided on the outer side of the vertical plate, the No. 2 roller is rollingly connected to the roller groove, the top of the connecting slide passes through the fixed frame, and the lifting support plates are equidistantly fixedly connected to the top of the connecting slide and are located inside the fixed frame.

[0012] The four corners of the bottom of the fixing column are threaded with screws, and the bottoms of the screws pass through the bottom of the fixing column and are threaded with the top of the base plate; the slide groove is at a forty-five-degree angle to the horizontal plane, and the roller groove is at a ninety-degree angle to the horizontal plane; the top of the base plate is provided with grooves that cooperate with the roller bracket, and the bottoms of the roller brackets pass through the corresponding grooves on the top of the base plate; the top of the lifting support plate and the top of the fixing frame are both provided with V-shaped grooves, and the top of the fixing frame is provided with a slot hole that can pass through the lifting support plate.

[0013] Furthermore, the annular line assembly includes an annular conveyor belt and a conveyor line outer frame sleeved on the annular conveyor belt; the conveyor line outer frame is provided with a conveyor belt power mechanism for driving the annular conveyor belt to move; the conveyor belt power mechanism includes a driving wheel driven by a motor and a driven wheel rotatably connected to the conveyor line outer frame; the conveyor line outer frame is provided with at least one cup transporting assembly for transporting the cup from one side of the annular conveyor belt to the other side of the annular conveyor belt; the conveyor line outer frame is provided with two cup pressing assemblies capable of pressing and fixing the cup; the two cup pressing assemblies are respectively provided on both sides of the cup transporting assembly; and a sensor is fixed on the conveyor line outer frame.

[0014] Furthermore, the cup conveying assembly includes a transfer cylinder with one end fixed on the outer frame of the conveyor line, a straight channel fixed on the outer frame of the conveyor line, and concentrically arranged inner arc baffles and outer arc baffles; the straight channel is arranged on the inner ring of the circular conveyor belt; the other end of the transfer cylinder is fixed with a push plate facing the straight channel; a rotating disk is provided directly below the inner arc baffle and the outer arc baffle; movable plates are provided at both ends of the outer arc baffle; the movable plates are both arranged directly above the circular conveyor belt; the movable plates are rotatably connected to the outer frame of the conveyor line; the movable plates are each provided with a swinging mechanism; the cup pressing assemblies are all cylinders; the clamping cylinder used for the loading position is the first clamping cylinder.

[0015] Furthermore, the positioning module is composed of lateral ejection components symmetrically arranged on both sides of the linear conveyor line assembly; the ejection component includes a positioning support, a positioning cylinder fixed at one end to the positioning support, and a positioning push plate fixed at the other end of the positioning cylinder.

[0016] After adopting the above structure, the beneficial effects of the present invention are as follows: when using the laser welding and sealing equipment for large cylindrical lithium batteries with full tabs, in the first step, the battery is grabbed from the support cup of the left circular line assembly by the loading and unloading robot on the left side and then transported to the linear conveyor line assembly;

[0017] In the second step, the linear conveyor line assembly conveys the battery to the code scanning mechanism, which uses the code scanning mechanism to determine whether the battery on the linear conveyor line assembly is in good condition. In the third step, the battery after code scanning is conveyed to the positioning module by the linear conveyor line assembly, and the battery is positioned on the conveyor line by the positioning module. In the fourth step, the positioned battery is conveyed to the welding assembly by the linear conveyor line assembly, and the battery shell and the box cover are welded and fixed by the welding assembly. During welding, the two ends of the battery are pressed and fixed, and the welding assembly drives the battery to rotate while the welder welds, so that a circular weld is formed between the battery shell and the box cover. In the fifth step, the welded battery is tested by the short-circuit detection assembly. In the sixth step, the battery that has passed the short-circuit detection is conveyed to the CCD detection assembly. The CCD detection assembly detects whether the battery surface meets the standard. In the sixth step, the battery conveyed to the end of the linear conveyor line assembly is flipped to the specified angle by the loading and unloading robot on the right side and then conveyed to the ring line assembly on the right. This structure realizes the online positioning, welding, circuit detection and appearance inspection of the battery. During the whole process, the battery does not need to be manually positioned, which improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a structural diagram of the lateral push-out group;

[0020] Figure 3 It is a schematic diagram of the structure of the welding assembly;

[0021] Figure 4 This is a first-person perspective stereogram of the short-circuit detection assembly;

[0022] Figure 5 This is the main view of the short circuit detection assembly; Figure 6 This is the overall top view of the short circuit detection;

[0023] Figure 7 This is a first-person perspective stereogram of the CCD detection assembly;

[0024] Figure 8 This is the main view of the CCD detection assembly;

[0025] Figure 9 It is a structural diagram of the ring line assembly;

[0026] Figure 10 This is a first-person perspective stereogram of the linear conveyor line assembly;

[0027] Figure 11 This is a second-angle perspective of the linear conveyor line assembly;

[0028] Figure 12 yes Figure 11 A partial view of the middle part of the

[0029] Figure 13 yes Figure 12 Magnified view of the Z part;

[0030] Figure 14 yes Figure 11 A partial view of the front end;

[0031] Figure 15 yes Figure 14 Enlarged view of the Y part;

[0032] Description of reference numerals:

[0033] A. Main frame; B. Scanning mechanism; C. Loading and unloading manipulator; D. Lateral ejection assembly;

[0034] D1, positioning push plate; D2, positioning cylinder; D3, positioning support; E, welding assembly;

[0035] F, short circuit detection assembly; F1, detection base plate; F2, first fixing bar; F3, second fixing bar;

[0036] F4, first vertical board; F5, second vertical board; F6, second horizontal board; F7, second push board;

[0037] F8, first push plate; F9, L-shaped plate; F10, second fixed seat; F11, second top block;

[0038] F12, mounting hole; F13, limit block; F14, first cylinder; F15, second cylinder;

[0039] F16, first horizontal plate; F17, third push plate; F18, spring; F19, scale line;

[0040] F20, first slide; F21, first positioning hole; F22, second slide; F23, first top block;

[0041] F24, second positioning hole; F25, first fixing seat;

[0042] G, CCD detection assembly; G1, detection mechanism; G2, clamping mechanism; G201, pressure wheel;

[0043] G202, cylinder; G203, mounting seat; G3, detection of driving wheel; G4, detection of driven wheel;

[0044] G5, rotating motor;

[0045] H, ring line assembly; H1, conveyor line outer frame; H2, driven wheel; H3, first clamping cylinder;

[0046] H4, endless conveyor belt; H5, transfer cylinder; H6, rotating disk; H7, straight channel;

[0047] H8, inner arc baffle; H9, second pressing cylinder; H10, driving wheel; H11, sensor;

[0048] H12, movable plate; H13, outer arc baffle;

[0049] I. Linear conveyor assembly; I1. Bottom plate; I2. Fixed column; I3. Lifting beam;

[0050] I4, roller bracket; I5, slide; I6, No. 1 roller; I7, main slide;

[0051] I8, first transverse slide rail; I9, connecting slide; I10, fixed frame; I11, lifting support plate;

[0052] I12, screw; I13, first linear module; I14, lifting slide; I15, lifting guide rail;

[0053] I16, crossbar; I17, second transverse slide; I18, second linear module; I19, second roller;

[0054] I20, roller groove; I21, vertical plate. DETAILED DESCRIPTION

[0055] The present invention will be further described below with reference to the accompanying drawings.

[0056] like Figures 1 to 3 As shown, the laser welding and sealing equipment for large cylindrical lithium batteries with full tabs according to the present invention comprises a main frame A and a linear conveyor line assembly I disposed on the main frame A; loading and unloading manipulators C are disposed on both sides of the linear conveyor line assembly I; a code scanning mechanism B for detecting whether there is a battery on a fixture, a positioning module for lateral positioning of the battery, a welding assembly E for welding the battery housing and the box cover, a short-circuit detection assembly F for detecting a short circuit in the battery circuit after welding, and a CCD detection assembly G for obtaining battery surface information are sequentially arranged on the main frame A along the length direction of the linear conveyor line assembly I; and a ring line assembly H for conveying batteries is fixed at both ends of the main frame A.

[0057] In the first step, the battery is grabbed from the left circular line assembly H by the loading and unloading robot C on the left and then transported to the linear conveyor assembly I;

[0058] In the second step, the linear conveyor assembly I conveys the battery to the barcode scanning mechanism B, which then determines the battery on the linear conveyor assembly I.

[0059] In the third step, the battery after scanning the code is transported to the positioning module through the linear conveyor line assembly I, and the battery is positioned on the conveyor line by the positioning module;

[0060] In the fourth step, the positioned battery is transported to the welding assembly E via the linear conveyor assembly I, where the battery housing and the box cover are welded and fixed by the welding assembly E. During welding, the two ends of the battery are pressed and fixed, and the welding assembly E drives the battery to rotate while the welder welds, so that a circular weld is formed between the battery housing and the box cover.

[0061] Step 5: The welded battery passes the short circuit detection assembly F test;

[0062] Step 6: The short-circuit tested battery is transported to the CCD test assembly G, which then checks whether the battery surface meets the standards.

[0063] Step 6: The battery delivered to the end of the linear conveyor assembly I is flipped to a specified angle by the loading and unloading robot C on the right side and then delivered to the circular line assembly H on the right side;

[0064] This structure realizes online positioning, welding, circuit testing and appearance testing of batteries. During the entire process, the batteries do not need to be manually positioned, thereby improving production efficiency.

[0065] like Figures 4 to 6As shown, as a preferred embodiment of the present invention, the short-circuit detection assembly F includes a detection base plate F1, the top of the detection base plate F1 is connected to a first slide F20 and a second slide F22 by screws, the top ends of the first slide F20 are fixed with a first vertical plate F4, the top ends of the second slide F22 are fixed with a second vertical plate F5, a first clamping component is provided between the tops of the two first vertical plates F4, and a second clamping component is provided between the tops of the two second vertical plates F5. The first clamping component and the second clamping component are used in conjunction to realize a clamping and positioning action; the first clamping component includes a first transverse plate F16, the first transverse plate F16 is fixedly connected between the tops of the two first vertical plates F4, the top of the first transverse plate F16 is slidably connected to a first push plate F8 through a guide rail, one end of the top of the first transverse plate F16 is fixedly connected to an L-shaped plate F9, the L-shaped A first cylinder F14 is fixedly installed on the side of the plate F9 away from the second vertical plate F5, and a first fixing seat F25 is equidistantly fixedly connected to the side of the first push plate F8 close to the second vertical plate F5, and a first top block F23 is fixedly connected to the side of the first fixing seat F25 away from the L-shaped plate F9; the first cylinder F14 pushes the first top block F23 on the first push plate F8, and the second cylinder F15 drives the second top block F11 on the second push plate F7 to move and cooperate with each other, the first top block F23 and the second top block F11 are respectively pressed against the two ends of the battery, and the second top block F11 and the first top block F23 are respectively connected to the two poles of the battery; a spring F18 is provided to avoid poor contact or no contact between the positive and negative poles of the short-circuit detector and the positive and negative poles of the lithium battery, which helps to improve the qualified rate of lithium battery short-circuit detection. At the same time, multiple lithium batteries can be fixed, thereby improving detection efficiency and enhancing the practicality of the device.

[0066] As a preferred embodiment of the present invention, the second clamping assembly includes a second transverse plate F6, which is fixedly connected between the tops of the two second vertical plates F5. The top of the second transverse plate F6 is slidably connected to a second push plate F7 via a guide rail. A second cylinder F15 is fixedly installed on the side of the second transverse plate F6 away from the first vertical plate F4. A third push plate F17 is slidably connected to the top of the second push plate F7 via a guide rail. The top of the third push plate F17 is equidistantly fixedly connected to a second fixed seat F10. The second fixed seat F10 is fixedly connected to a second top block F11 on one side away from the second cylinder F15. A spring F18 is fixedly connected between the side of the second fixing seat F10 away from the second top block F11 and the second push plate F7; the top of the detection base plate F1 and both sides of the first slide plate F20 are fixedly connected to the first fixing bar F2, and both sides of the first slide plate F20 are slidably connected to the side close to the two first fixing bars F2; the top of the detection base plate F1 and both sides of the second slide plate F22 are fixedly connected to the second fixing bar F3, and both sides of the second slide plate F22 are slidably connected to the side close to the two second fixing bars F3; the two ends of the top of the first slide plate F20 and the second slide plate F22 There are two first positioning holes F21, and the top of the detection base plate F1 and one side of the first fixing bar F2 and the second fixing bar F3 are equidistantly provided with second positioning holes F24 used in conjunction with the first positioning holes F21; two mounting holes F12 are provided at both ends of the top of the detection base plate F1, and the top of the detection base plate F1 and one side of the first slide F20 and the second slide F22 are fixedly connected to the limit block F13; one of the tops of the first fixing bar F2 and the second fixing bar F3 is provided with a scale line F19; the first clamping assembly includes a first horizontal plate F16, and the first horizontal plate F16 is fixedly connected to the first horizontal plate F16. Between the tops of the two first vertical plates F4, the top of the first horizontal plate F16 is slidably connected to the first push plate F8 through a guide rail, one end of the top of the first horizontal plate F16 is fixedly connected to the L-shaped plate F9, and the first cylinder F14 is fixedly installed on the side of the L-shaped plate F9 away from the second vertical plate F5. The first push plate F8 is equidistantly fixedly connected to the side close to the second vertical plate F5 with the first fixing seat F25, and the first fixing seat F25 is fixedly connected to the side away from the L-shaped plate F9 with the first top block F23. By setting the first cylinder F14, the first push plate F8 is pushed, and then the first top block F23 is driven to contact the lithium battery through the first fixing seat F25.

[0067] Among them, the second clamping assembly includes a second transverse plate F6, which is fixedly connected between the tops of the two second vertical plates F5, and the top of the second transverse plate F6 is slidably connected to the second push plate F7 through a guide rail. The second transverse plate F6 is fixedly installed on the side away from the first vertical plate F4 with a second cylinder F15, and the top of the second push plate F7 is slidably connected to the second top block F11 through a guide rail. The top of the second top block F11 is equidistantly fixedly connected to the second fixed seat F10, and the second fixed seat F10 is fixedly connected to the second top block F11 on one side away from the second cylinder F15. A spring F18 is fixedly connected between the side and the second push plate F7. By setting the second cylinder F15, the second push plate F7 is pushed, and at the same time, the second top block F11 is driven to contact the lithium battery. When the second top block F11 contacts the lithium battery, since the second top block F11 is slidingly connected to the second push plate F7 through the guide rail, and the spring F18 is fixedly connected between the side of the second fixed seat F10 away from the second top block F11 and the second push plate F7, the second top block F11 is in contact with the lithium battery and compresses the spring F18, thereby playing a buffering role in the clamping process, thereby protecting the lithium battery.

[0068] Among them, the top of the detection base plate F1 and both sides of the first skateboard F20 are fixedly connected with the first fixing bars F2, and both sides of the first skateboard F20 are slidably connected to the side close to the two first fixing bars F2. The top of the detection base plate F1 and both sides of the second skateboard F22 are fixedly connected with the second fixing bars F3, and both sides of the second skateboard F22 are slidably connected to the side close to the two second fixing bars F3. By arranging the first fixing bars F2 on both sides of the first skateboard F20 and the second fixing bars F3 on both sides of the second skateboard F22, the first skateboard F20 and the second skateboard F22 can be limited when moving to prevent deviation during the movement.

[0069] Among them, two first positioning holes F21 are provided at both ends of the top of the first skateboard F20 and the second skateboard F22, and second positioning holes F24 used in conjunction with the first positioning holes F21 are provided at equal distances on the top of the detection base plate F1 and on one side of the first fixing bar F2 and the second fixing bar F3. By setting the first positioning holes F21 and the second positioning holes F24, it is convenient to fix the first skateboard F20 and the second skateboard F22.

[0070] Among them, two mounting holes F12 are opened at both ends of the top of the detection base plate F1, and the top of the detection base plate F1 and one side of the first slide F20 and the second slide F22 are fixedly connected with a limiting block F13. By setting the limiting block F13, the first slide F20 and the second slide F22 can be limited to prevent the moving distance from being too large.

[0071] Among them, a scale line F19 is set on the top of one of the first fixing bars F2 and the second fixing bar F3. By setting the scale line F19, the distance between the first top block F23 and the second top block F11 can be calculated, so that it can be adjusted according to different lithium battery thicknesses.

[0072] As shown in Figures 7 and 8, as a preferred embodiment of the present invention, the CCD detection assembly G includes a detection mechanism G1, which is used to identify product information. A plurality of spaced-apart clamping mechanisms G2 are provided on one side of the detection mechanism G1, and a plurality of rotating mechanisms are provided on the lower side of the clamping mechanism G2. Each rotating mechanism is equipped with a corresponding lifting mechanism.

[0073] The rotating mechanism lifts the product under the action of the lifting mechanism, and the pressing mechanism G2 can press the lifted product. The rotating mechanism is provided with a driving wheel to rotate the product, which is convenient for the detection mechanism G1 to identify the information. This mechanism has high detection accuracy, high safety factor and high stability. The pressing wheel of the rotating clamping mechanism is made of non-metallic material to avoid short circuit and scratching the battery.

[0074] As a preferred embodiment of the present invention, the clamping mechanism G2 includes a pressure wheel G201, a cylinder G202, and a mounting seat G203, the pressure wheel G201 is arranged on the mounting seat G203, and the cylinder G202 is connected to the mounting seat G203; the rotating mechanism includes at least four driving wheels, at least one of which is connected to the rotating motor G5; the driving wheels are arranged to detect the active wheel G3 and the driven wheel G4, the active wheel G3 is connected to the rotating motor G5, the driven wheel G4 is located on the opposite side of the active wheel G3, and the driven wheel G4 is located in the same plane as the active wheel G3 and is arranged in parallel; the active wheel G3 and the driven wheel G4 are both provided with rubber rings; the detecting mechanism G1 is provided with a bolt adjustment assembly; the detecting mechanism G1 is provided with a CCD detector; the clamping mechanism G2 includes a pressure wheel G201, a cylinder G202, Mounting seat G203, the pressure wheel G201 is set on the mounting seat G203, the cylinder G202 is connected to the mounting seat G203, the pressing mechanism G2 presses the product through the pressure wheel G201, the mounting seat G203 can be installed on the cylinder G202, and the cylinder G202 presses down the pressure wheel G201 through the mounting seat G203, thereby ensuring the pressing force. At the same time, a similar limit block structure can also be installed on the pressing mechanism G2 for limited fixation to improve the pressing effect and flexibility. After the battery is in place, the cylinder G202 is ventilated, and the detection active wheel G3 and the detection driven wheel G4 lift the battery through the upgrading mechanism. The cylinder G202 is pressed down, and the pressure wheel G201 is in direct contact with the battery. The rotating motor G5 on the detection active wheel G3 drives the battery, the detection driven wheel G4, and the pressure wheel G201 to rotate rapidly together. The servo module on the CCD detection mechanism G1 drives the camera and the light source to detect each battery in turn.

[0075] In this embodiment, the rotating mechanism includes at least four driving wheels, at least one of which is connected to the rotating motor G5. The rotating mechanism can adopt a variety of combinations of driving wheel structures to drive the product to rotate. The driving wheel can lift the product on the conveyor line under the action of the lifting mechanism, and then the rotating motor G5 drives the driving wheel to rotate to rotate the product. The lifting mechanism can be a lifting cylinder or other similar structure.

[0076] In this embodiment, the driving wheels are configured as a detection active wheel G3 and a detection driven wheel G4. The detection active wheel G3 is connected to the rotating motor G5. The detection driven wheel G4 is located on the opposite side of the detection active wheel G3, and the detection driven wheel G4 and the detection active wheel G3 are located in the same plane and are arranged in parallel. The detection active wheel G3 and the detection driven wheel G4 are respectively installed with lifting mechanisms. The detection active wheel G3 and the detection driven wheel G4 are respectively located at both ends of the product to play a certain role in lifting and supporting the product. One end of the product is supported by two detection active wheels G3, and the other end of the product is supported by two detection driven wheels G4. At the same time, the detection active wheel G3 drives the product to rotate under the action of the rotating motor 3, which is conducive to improving the detection effect.

[0077] In this embodiment, a rubber ring is provided on the detection driving wheel G3 and / or the detection driven wheel G4. The rubber ring is beneficial to increase the contact resistance between the detection driving wheel G3 and the detection driven wheel G4 and the product, thereby ensuring the rotation stability of the product.

[0078] In this embodiment, a bolt adjustment assembly is provided on the detection mechanism G1, which is used to adjust the height of the detection mechanism G1 up and down. The bolt adjustment assembly mainly adjusts the position up and down by adjusting the bolt, so that the position of the detection mechanism G1 is relatively adjusted at the same time, driving the detection mechanism G1 to move up and down, which is convenient for the detection mechanism G1 to identify product information. Other similar structures can also be used as replacements, such as lifting cylinders.

[0079] like Figure 10-15 As shown, as a preferred embodiment of the present invention, the linear conveyor line assembly I includes three base plates I1, a second linear module I18 and a translation module. The translation module is arranged on the top of the base plate I1, and the translation module is used to realize the horizontal transportation of the product. Fixed columns I2 are provided at both ends of the top of the base plate I1, and one side of the fixed column I2 is fixedly connected to a lifting guide rail I15, and the side of the lifting guide rail I15 away from the fixed column I2 is slidably connected to a lifting slider I14, and a lifting beam I3 is fixedly installed between the two lifting sliders I14, and the bottom of the lifting beam I3 They are all fixedly connected with a roller bracket I4, a slide groove I5 is provided inside the roller bracket I4, the top of the bottom plate I1 is fixedly connected with a second transverse slide rail I17, the outer side of the second transverse slide rail I17 is slidably connected with a main slider I7, the top of the main slider I7 is fixedly connected with a No. 1 roller I6, the No. 1 roller I6 is rollingly connected to the corresponding slide groove I5, and a cross bar I16 is fixedly connected between two adjacent main sliders I7, and the second linear module I18 is used to drive one of the main sliders I7 to move laterally, and the main sliders I7 at all levels are driven by the cross bar I16;

[0080] The second linear module I18 provides power drive, driving one of the main sliders I7 to move horizontally on the second transverse slide rail I17. The cross bar I16 connects the main sliders I7 at all levels, driving all the No. 1 rollers I6 to roll on the corresponding slide grooves I5, and then drives the lifting slider I14 to move longitudinally on the lifting guide rail I15, thereby realizing the up and down lifting of the lifting beam I3. At the same time, the translation module is used to realize the horizontal transportation of the product, and then the battery is transported to each workstation for process processing through the transmission mechanism. The positioning accuracy is high, and the safety and stability are high. The battery movement is realized by pushing the cam at the same time by the translation module and the lifting module, and three batteries are moved at a time.

[0081] As a preferred embodiment of the present invention, the translation module includes a first transverse slide rail I8, a connecting slide seat I9, a first linear module I13 and a lifting support plate I11. The first linear module I13 is arranged on one side of the corresponding base plate I1, and one side of the first linear module I13 is rotatably connected to a second roller I19. The first transverse slide rail I8 is fixedly connected to the top of the lifting beam I3, and a fixed frame I10 is fixedly connected between the tops of the two fixed columns I2. The connecting slide seat I9 is slidably connected to the first transverse slide rail I 8, one end of the bottom of the connecting slide I9 is fixedly connected to a vertical plate I21, and a roller groove I20 is opened on the outer side of the vertical plate I21. The second roller I19 is rollingly connected to the roller groove I20, and the top of the connecting slide I9 passes through the fixed frame I10. The lifting support plates I11 are fixedly connected to the top of the connecting slide I9 at equal distances and are located inside the fixed frame I10; the first linear module I13 provides power drive to drive the connecting slide I9 to move horizontally on the first transverse slide rail I8, thereby realizing horizontal movement of the battery.

[0082] The four corners of the bottom of the fixing column I2 are threadedly connected with screws I12, and the bottoms of the screws I12 pass through the bottom of the fixing column I2 and are threadedly connected to the top of the base plate I1; the slide groove I5 is at a forty-five degree angle to the horizontal plane, and the roller groove I20 is at a ninety degree angle to the horizontal plane; the top of the base plate I1 is provided with a groove that cooperates with the roller bracket I4, and the bottom of the roller bracket I4 passes through the corresponding groove at the top of the base plate I1; the top of the lifting support plate I11 and the top of the fixing frame I10 are provided with a V-shaped groove, and the top of the fixing frame I10 is provided with a slot that can pass through the lifting support plate I11; the top of the fixing frame I10 is provided with a slot that can pass through the lifting support plate I11 for positioning the battery; the bottoms of the screws I12 pass through the bottom of the fixing column I2 and are threadedly connected to the top of the base plate I1, which facilitates the removal of the fixing column I2 from the base plate I1; the batteries are arranged in a fixed The V-groove on the frame I10 is positioned and powered by the second linear module I18, driving one of the main sliders I7 to move horizontally on the second transverse slide rail I17. The cross bar I16 connects the main sliders I7 at all levels, driving all the No. 1 rollers I6 to roll on the corresponding slide grooves I5, and then drives the lifting slider I14 to move longitudinally on the lifting guide rail I15, thereby realizing the up and down movement of the lifting beam I3. At the same time, the first linear module I13 drives the connecting slide I9 to move horizontally on the first transverse slide rail I8. The up and down movement of the lifting beam I3 drives the connecting slide I9 to move up and down, and further, the lifting support plate I11 can be moved horizontally and up and down at the same time, so that the lifting support plate I11 pushes the battery on the fixed frame I10 and pushes it away from the fixed frame I10. Then, when descending, the battery is stuck in another V-groove on the fixed frame I10, realizing the step-by-step feeding of the battery, and finally returns to its original position.

[0083] like Figure 9 As shown, as a preferred embodiment of the present invention, the circular line assembly includes an endless conveyor belt H4 and a conveyor line outer frame H1 sleeved on the endless conveyor belt H4; a conveyor belt power mechanism for driving the endless conveyor belt H4 is provided on the conveyor line outer frame H1; the conveyor belt power mechanism includes a driving wheel 10 driven by a motor and a driven wheel H2 rotatably connected to the conveyor line outer frame H1; at least one cup conveying assembly for conveying cups from one side of the endless conveyor belt H4 to the other side of the endless conveyor belt H4 is provided on the conveyor line outer frame H1; two cup pressing assemblies capable of pressing and fixing the cups are provided on the conveyor line outer frame H1; the two cup pressing assemblies are respectively provided on both sides of the cup conveying assembly; an inductor H11 is fixed on the conveyor line outer frame H1;

[0084] The two cup pressing assemblies are used to press and fix the cups so that the pressed cups will not move along with the endless conveyor belt H4, making it easier for an external robot to insert or remove batteries.

[0085] Sensor H11 detects whether there are batteries in the trays passing by the circular conveyor belt H4. When it detects that there are no batteries in the trays, the tray transport assembly will work and immediately transfer the empty trays to the other side of the circular conveyor belt H4. In this way, the trays will flow directly to the battery loading position without passing through the battery unloading station, while the trays with batteries will continue to move along the conveyor line to the next tray pressing assembly position for battery unloading. When the number of trays in the tray pressing assembly reaches the set value, the material-retrieving robot will take out the batteries, and the tray pressing assembly will continue to flow back to the battery loading position along the circular conveyor belt H4. This structure uses automation to remove empty trays, reduce labor intensity, and ensure that the number of trays on the circular conveyor belt H4 will not decrease during operation.

[0086] As a preferred embodiment of the present invention, the cup conveying assembly includes a transfer cylinder H5 fixed at one end on the outer frame H1 of the conveyor line, a straight channel H7 fixed on the outer frame H1 of the conveyor line, an inner arc baffle H8 and an outer arc baffle H13 arranged concentrically; the straight channel H7 is arranged on the inner ring of the endless conveyor belt H4; the other end of the transfer cylinder H5 is fixed with a push plate facing the straight channel H7; after the sensor H11 detects the empty cup, the transfer cylinder H5 starts to move the empty cup from one side of the endless conveyor belt H4 along the The straight channel H7 pushes the conveyor to the other side of the circular conveyor belt H4; a rotating disk H6 is provided just below the inner arc baffle H8 and the outer arc baffle H13; movable plates H12 are provided at both ends of the outer arc baffle H13; the movable plates H12 are provided just above the circular conveyor belt H4; the movable plates H12 are rotatably connected to the outer frame H1 of the conveyor line; a swing mechanism is provided on the movable plates H12; a motor is connected to the bottom of the rotating disk H6; the swing mechanism consists of a cylinder and a connecting rod, and the connecting rod is activated by the cylinder. The rod drives the movable plate H12 to flip; when there is no empty cup, the movable plate H12 leaves the upper surface of the endless conveyor belt H4, so that the cup can move with the endless conveyor belt H4; when an empty cup is detected, the cylinder of the swing mechanism drives the movable plate H12 to flip to connect with the outer arc baffle H13 through the connecting rod, and the cup enters from the gap between the movable plate H12 and the inner arc baffle H8 to between the inner arc baffle H8 and the outer arc baffle H13; then, the rotating disk H6 rotates along the gap between the inner arc baffle H8 and the outer arc baffle The gap between the plates H13 enters the other side of the circular conveyor belt H4; the cup pressing components are all cylinders; the pressing cylinder used for the loading position is the first clamping cylinder H3; the pressing cylinder used for the unloading position is the second clamping cylinder H9; the first clamping cylinder H3 and the second clamping cylinder H9 are both connected with a pressing block with a V-groove, which can realize the positioning of the cup; the gap between the first clamping cylinder H3 and the gap between the second clamping cylinder H9 can be adjusted according to the spacing of the loading jaws or the spacing of the unloading jaws.

[0087] like Figure 2As shown, as a preferred embodiment of the present invention, the positioning module is composed of lateral push-out components D symmetrically arranged on both sides of the linear conveyor line assembly I; the push-out component D includes a positioning support D3, a positioning cylinder D2 fixed at one end on the positioning support D3, and a positioning push plate D1 fixed at the other end of the positioning cylinder D2; the battery is transported between the two positioning push plates D1, and then the two positioning cylinders D2 are actuated to simultaneously push out the two positioning push plates D1, so that the two positioning push plates D1 are respectively pressed on the two ends of the battery for positioning, so that the welding position of the battery is aligned with the welding machine.

[0088] Working principle: In the first step, the battery is grabbed from the cup of the left circular line assembly by the loading and unloading robot on the left, and then transported to the linear conveyor line assembly;

[0089] In the second step, the linear conveyor assembly conveys the batteries to the barcode scanning mechanism, which then determines the batteries on the linear conveyor assembly.

[0090] In the third step, the battery after scanning the code is transported to the positioning module through the linear conveyor assembly, between the two positioning push plates, and then the two positioning cylinders are activated to push the two positioning push plates out at the same time, so that the two positioning push plates are pressed against the two ends of the battery for positioning, so that the welding position of the battery is aligned with the welding position of the welding assembly;

[0091] In the fourth step, the positioned battery is transported to the welding assembly via a linear conveyor assembly, where the battery shell and the box cover are welded together. During welding, both ends of the battery are pressed and fixed, and the welding assembly drives the battery to rotate while the welder welds, forming a circular weld between the battery shell and the box cover.

[0092] In the fifth step, the welded battery is used to push the first top block on the first push plate through the first cylinder, and the second top block on the second push plate is driven by the second cylinder to move in coordination. The first top block and the second top block are respectively pressed against the two ends of the battery, and the second top block and the first top block are respectively connected to the two poles of the battery. At the same time, a distance measuring device for measuring the length of the battery can also be set on this mechanism.

[0093] In the sixth step, the short-circuit tested batteries are transported to the CCD inspection assembly. The cylinder is ventilated, and the detection driving wheel and the detection driven wheel lift the battery through the upgrading mechanism. The cylinder is pressed down, and the pressure wheel directly contacts the battery. The rotating motor on the detection driving wheel drives the battery, the detection driven wheel, and the pressure wheel to rotate rapidly together. The servo module on the detection mechanism drives the camera and light source to inspect each battery in turn. The CCD inspection assembly checks whether the battery surface meets the standards.

[0094] In the sixth step, the battery delivered to the end of the straight conveyor line assembly is flipped to the specified angle by the loading and unloading robot on the right side and then transported to the circular line assembly on the right; this structure realizes the online positioning, welding, circuit testing and appearance testing of the battery. During the whole process, the battery does not need to be manually positioned, which improves production efficiency.

[0095] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A laser welding and sealing device for large cylindrical lithium batteries with full tabs, characterized by: It comprises a main frame (A) and a linear conveyor assembly (I) arranged on the main frame (A); loading and unloading manipulators (C) are arranged on both sides of the linear conveyor assembly (I); a code scanning mechanism (B) for detecting whether there is a battery on the fixture, a positioning module for lateral positioning of the battery, a welding assembly (E) for welding the battery shell and the box cover, a short-circuit detection assembly (F) for detecting the short circuit of the battery circuit after welding, and a CCD detection assembly (G) for obtaining battery surface information are arranged in sequence on the main frame (A) along the length direction of the linear conveyor assembly (I); a ring line assembly (H) for conveying batteries is fixed at both ends of the main frame (A); The short circuit detection assembly (F) includes a detection base plate (F1), the top of the detection base plate (F1) is connected to a first slide plate (F20) and a second slide plate (F22) by screws, the first slide plate (F20) is fixed with a first vertical plate (F4) at both ends of the top, and the second slide plate (F5) is fixed with a second vertical plate (F5) at both ends of the top, a first clamping component is provided between the tops of the two first vertical plates (F4), and a second clamping component is provided between the tops of the two second vertical plates (F5), and the first clamping component and the second clamping component are used in conjunction to achieve a clamping and positioning action; the first clamping component includes a first horizontal plate ( F16), the first horizontal plate (F16) is fixedly connected between the tops of the two first vertical plates (F4), the top of the first horizontal plate (F16) is slidably connected to a first push plate (F8) via a guide rail, one end of the top of the first horizontal plate (F16) is fixedly connected to an L-shaped plate (F9), a first cylinder (F14) is fixedly installed on the side of the L-shaped plate (F9) away from the second vertical plate (F5), a first fixed seat (F25) is equidistantly fixedly connected to the side of the first push plate (F8) close to the second vertical plate (F5), and a first top block (F23) is fixedly connected to the side of the first fixed seat (F25) away from the L-shaped plate (F9); The second clamping assembly includes a second transverse plate (F6), the second transverse plate (F6) is fixedly connected between the tops of the two second vertical plates (F5), the top of the second transverse plate (F6) is slidably connected to a second push plate (F7) via a guide rail, a second cylinder (F15) is fixedly installed on the side of the second transverse plate (F6) away from the first vertical plate (F4), the top of the second push plate (F7) is slidably connected to a third push plate (F17) via a guide rail, the top of the third push plate (F17) is equidistantly fixedly connected to a second fixed seat (F10), the side of the second fixed seat (F10) away from the second cylinder (F15) is fixedly connected to a second top block (F11), and a spring (F18) is fixedly connected between the side of the second fixed seat (F10) away from the second top block (F11) and the second push plate (F7); the top of the detection base plate (F1) and both sides of the first slide plate (F20) are fixedly connected to the first fixing bar (F2), and both sides of the first slide plate (F20) are connected to the two The first fixing strip (F2) is slidably connected to one side close to the first fixing strip (F2); the top of the detection base plate (F1) and both sides of the second slide plate (F22) are fixedly connected to the second fixing strip (F3); both sides of the second slide plate (F22) are slidably connected to the side close to the two second fixing strips (F3); two first positioning holes (F21) are provided at both ends of the top of the first slide plate (F20) and the second slide plate (F22); second positioning holes (F24) used in conjunction with the first positioning holes (F21) are equidistantly provided at the top of the detection base plate (F1) and on one side of the first fixing strip (F2) and the second fixing strip (F3); two mounting holes (F12) are provided at both ends of the top of the detection base plate (F1); a limiting block (F13) is fixedly connected to the top of the detection base plate (F1) and on one side of the first slide plate (F20) and the second slide plate (F22); and a scale line (F19) is provided at the top of one of the first fixing strip (F2) and the second fixing strip (F3).

2. The laser welding and sealing equipment for large cylindrical lithium batteries with full tabs according to claim 1, characterized in that: The CCD detection assembly (G) includes a detection mechanism (G1), which is used to identify product information. A plurality of spaced-apart pressing mechanisms (G2) are provided on one side of the detection mechanism (G1), and a plurality of rotating mechanisms are provided on the lower side of the pressing mechanism (G2). Each rotating mechanism is equipped with a corresponding lifting mechanism.

3. The laser welding and sealing equipment for large cylindrical lithium batteries with full tabs according to claim 2, characterized in that: The pressing mechanism (G2) comprises a pressing wheel (G201), a cylinder (G202), and a mounting seat (G203); the pressing wheel (G201) is arranged on the mounting seat (G203), and the cylinder (G202) is connected to the mounting seat (G203); the rotating mechanism comprises at least four driving wheels, at least one of which is connected to the rotating motor (G5); the driving wheels are arranged as a detection driving wheel (G3) and a detection driven wheel (G4); the detection driving wheel (G3) is connected to the rotating motor (G5), the detection driven wheel (G4) is located on the opposite side of the detection driving wheel (G3), and the detection driven wheel (G4) and the detection driving wheel (G3) are located in the same plane and are arranged in parallel; the detection driving wheel (G3) and the detection driven wheel (G4) are both provided with rubber rings; the detection mechanism (G1) is provided with a bolt adjustment assembly; the detection mechanism (G1) is configured as a CCD detector.

4. The laser welding and sealing equipment for large cylindrical lithium batteries with full tabs according to claim 1, characterized in that: The linear conveyor assembly (I) includes three base plates (I1), a second linear module (I18) and a translation module. The translation module is arranged on the top of the base plate (I1) and is used to realize horizontal conveying of products. Fixed columns (I2) are arranged at both ends of the top of the base plate (I1). One side of the fixed column (I2) is fixedly connected to a lifting guide rail (I15). The side of the lifting guide rail (I15) away from the fixed column (I2) is slidably connected to a lifting slider (I14). A lifting beam (I3) is fixedly installed between the two lifting sliders (I14). The bottom of the lifting beam (I3) is fixedly connected to a roller bracket ( I4), a slide groove (I5) is provided inside the roller bracket (I4), the top of the base plate (I1) is fixedly connected to a second transverse slide rail (I17), the outer side of the second transverse slide rail (I17) is slidably connected to a main slider (I7), the top of the main slider (I7) is fixedly connected to a No. 1 roller (I6), the No. 1 roller (I6) is rollingly connected to the corresponding slide groove (I5), and a cross bar (I16) is fixedly connected between two adjacent main sliders (I7), the second linear module (I18) is used to drive one of the main sliders (I7) to move laterally, and the main sliders (I7) at each level are transmitted through the cross bar (I16).

5. The laser welding and sealing equipment for large cylindrical lithium batteries with full tabs according to claim 4, characterized in that: The translation module includes a first transverse slide rail (I8), a connecting slide seat (I9), a first linear module (I13) and a lifting support plate (I11), wherein the first linear module (I13) is arranged on one side of the corresponding base plate (I1), and one side of the first linear module (I13) is rotatably connected to a second roller (I19), the first transverse slide rail (I8) is fixedly connected to the top of the lifting beam (I3), and a fixing frame (I10) is fixedly connected between the tops of the two fixed columns (I2), and the The connecting slide (I9) is slidably connected to the top of the first transverse slide rail (I8); one end of the bottom of the connecting slide (I9) is fixedly connected to a vertical plate (I21); a roller groove (I20) is provided on the outer side of the vertical plate (I21); the second roller (I19) is rollingly connected to the roller groove (I20); the top of the connecting slide (I9) passes through the fixed frame (I10); the lifting support plates (I11) are fixedly connected to the top of the connecting slide (I9) at equal distances and are located inside the fixed frame (I10); The four corners of the bottom of the fixed column (I2) are threadedly connected with screws (I12), and the bottoms of the screws (I12) pass through the bottom of the fixed column (I2) and are threadedly connected to the top of the bottom plate (I1); the sliding groove (I5) forms an angle of 45 degrees with the horizontal plane, and the roller groove (I20) forms an angle of 90 degrees with the horizontal plane; the top of the bottom plate (I1) is provided with a groove that matches the roller bracket (I4), and the bottom of the roller bracket (I4) passes through the corresponding groove on the top of the bottom plate (I1); the top of the lifting support plate (I11) and the top of the fixing frame (I10) are both provided with a V-shaped groove, and the top of the fixing frame (I10) is provided with a slot hole that can pass through the lifting support plate (I11).

6. The laser welding and sealing equipment for large cylindrical lithium batteries with full tabs according to claim 1, characterized in that: The circular line assembly includes an endless conveyor belt (H4) and a conveyor line outer frame (H1) sleeved on the endless conveyor belt (H4); a conveyor belt power mechanism for driving the endless conveyor belt (H4) is provided on the conveyor line outer frame (H1); the conveyor belt power mechanism includes a driving wheel 10 driven by a motor and a driven wheel (H2) rotatably connected to the conveyor line outer frame (H1); at least one cup conveying assembly for conveying a cup from one side of the endless conveyor belt (H4) to the other side of the endless conveyor belt (H4) is provided on the conveyor line outer frame (H1); two cup pressing assemblies capable of pressing and fixing the cup are provided on the conveyor line outer frame (H1); the two cup pressing assemblies are respectively provided on both sides of the cup conveying assembly; and a sensor (H11) is fixed on the conveyor line outer frame (H1).

7. The laser welding and sealing equipment for large cylindrical lithium batteries with full tabs according to claim 6, characterized in that: The cup transport assembly comprises a transfer cylinder (H5) with one end fixed on the outer frame (H1) of the conveyor line, a straight channel (H7) fixed on the outer frame (H1) of the conveyor line, an inner arc baffle (H8) and an outer arc baffle (H13) arranged concentrically; the straight channel (H7) is arranged on the inner ring of the annular conveyor belt (H4); a push plate facing the straight channel (H7) is fixed on the other end of the transfer cylinder (H5); the inner arc baffle (H8) and the outer arc baffle (H13) are arranged concentrically. (H13) is provided with a rotating disk (H6); movable plates (H12) are provided at both ends of the outer arc baffle (H13); the movable plates (H12) are provided directly above the ring conveyor belt (H4); the movable plates (H12) are rotatably connected to the outer frame (H1) of the conveyor line; the movable plates (H12) are provided with a swing mechanism; the pressing cup components are all cylinders; the clamping cylinder used for the loading position is the first clamping cylinder (H3).

8. The laser welding and sealing equipment for large cylindrical lithium batteries with full tabs according to claim 1, characterized in that: The positioning module is composed of lateral push-out assemblies (D) symmetrically arranged on both sides of the linear conveyor assembly (I); the push-out assembly (D) includes a positioning support (D3), a positioning cylinder (D2) fixed at one end to the positioning support (D3), and a positioning push plate (D1) fixed at the other end of the positioning cylinder (D2).

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