Automatic lamination device for soft package lithium battery pole pieces of new energy automobile
By employing differential design and multi-layer automatic stacking technology, the problem of irregular stacking in the automatic stacking device for lithium battery electrodes has been solved, achieving high-precision electrode-separator bonding and cell encapsulation, thereby improving production efficiency and cell quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-03
- Publication Date
- 2026-05-15
AI Technical Summary
Existing automatic electrode stacking devices for lithium batteries are unable to achieve regular differential stacking, resulting in missed stacking, electrode misalignment, and packaging film entanglement, which affect stacking accuracy and cell quality.
The differential automatic stacking of electrode sheets is achieved through the coordinated operation of a spiral shaft, slider, trigger rod, outer frame, inner plate, back plate, and sliding column; the release and flatness of the packaging film are precisely controlled through the coordination of rotating shaft, rocker arm, coating roller, ratchet, gear, etc.; and multi-layer automatic stacking and automatic unloading are achieved by using inclined pressure block, stacking box, multi-stage telescopic rod, electric push rod, etc.
It improves the bonding effect between the electrode and the separator, reduces wrinkles and stretching, enhances the stacking accuracy and cell packaging quality, reduces labor costs and safety risks, and improves production efficiency.
Smart Images
Figure CN122051409A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of battery stacking technology, specifically to an automatic stacking device for soft-pack lithium battery electrodes for new energy vehicles. Background Technology
[0002] Lithium-ion battery electrode stacking is a mechanical method to construct the electrochemical core reaction zone of the cell. The positive electrode, negative electrode and separator are combined in an ordered structure of "separator-negative electrode-separator-positive electrode" to provide a stable physical space and electrochemical reaction interface for the insertion and extraction of lithium ions, and finally realize the energy storage and release function of the battery.
[0003] Patent CN120497463A discloses an automatic stacking device for soft-pack lithium battery electrodes, including a stacking table and material tables symmetrically distributed on both sides of the stacking table. It also includes a reciprocating moving mechanism connected to two sets of material picking components and a set of guide rollers. The reciprocating moving mechanism drives the two sets of material picking components to alternately pick up materials from the material tables and transfer them to the stacking table. The reciprocating moving mechanism drives the guide rollers to reciprocate and guide the separator. Four sets of displacement components are symmetrically arranged on the front and rear sides of the stacking table. In this invention, during the pressing and releasing of the electrode sheets by the material picking components, the pressure bar positions the center of the electrode sheet, and the connecting rod pushes two suction cups to both sides to flatten and compact the center of the electrode sheet. When the pressure claw presses down to position the electrode sheet, the sliding groove tilts... The oblique guide causes the pressure claw to laterally flatten and compact the edge of the electrode sheet, thereby tightening and flattening the entire electrode sheet, effectively preventing wrinkles and deformation of the electrode sheet and improving the quality of cell stacking. However, the above-mentioned device is difficult to achieve regular differential stacking of the electrode sheets during operation, resulting in missed stacking or electrode sheet misalignment. During film coating, the packaging film may become entangled and knotted, resulting in excessive wrinkles and reduced coating effect. It is also difficult to achieve multi-layer automatic stacking during stacking, requiring multiple single-layer stackings, which affects the accuracy of the final electrode sheet stacking and the working effect of the final formed cell. Therefore, an automatic stacking device for soft-pack lithium battery electrodes for new energy vehicles is proposed to solve the above-mentioned problems. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to provide an automatic stacking device for electrode sheets of soft-pack lithium batteries for new energy vehicles, which addresses the shortcomings of the prior art.
[0005] To solve the above technical problems, the technical solution adopted by the present invention is: an automatic stacking device for soft-pack lithium battery electrodes for new energy vehicles, including a worktable, a support fixedly connected to the top surface of the worktable, a stacking mechanism arranged inside the worktable, a glass plate fixedly connected to the inner wall of the support, a packaging mechanism arranged above the worktable, and a multi-layer stacking mechanism arranged inside the worktable. The stacking mechanism includes a spiral shaft, a motor is installed inside the worktable, the spiral shaft is fixedly connected to the output end of the motor, a slider is spirally connected to the circumference of the spiral shaft, a groove is opened on the top surface of the worktable, the slider is slidably connected to the inner wall of the groove opened on the top surface of the worktable, an outer frame is fixedly connected to the top surface of the slider, a trigger rod is fixedly connected to the rear side of the outer frame, and the bottom surface of the outer frame is in contact with the top surface of the worktable.
[0006] Preferably, an electrode box is fixedly connected to the top surface of the workbench, and a discharge groove is formed on the surface of the electrode box. The top surface of the outer frame is in contact with the inner wall of the discharge groove formed on the surface of the electrode box. An inner plate is rotatably connected to the inner wall of the outer frame. When the device is running, the motor located on the left side inside the workbench first drives the screw shaft to rotate. The rotation of the screw shaft drives the slider to slide inward on the inner wall of the workbench. The sliding of the slider drives the outer frame to slide inward on the top surface of the workbench. The sliding of the outer frame drives the stored electrode sheets inside the electrode box to move inward until they reach the stacking position. Then, the motor located on the right side inside the workbench... The machine starts and drives the screw shaft to rotate. The rotation of the screw shaft causes the slider to slide inward on the inner wall of the worktable. The sliding of the slider causes the outer frame to slide inward on the top surface of the worktable. The sliding of the outer frame causes the stored electrodes in the electrode box to move inward until they reach the stacking position. This process is repeated. The output end of the motor set inside the worktable drives the outer frame to move inward, bringing the electrodes stored in the electrode box to the stacking position. This realizes the differential automatic stacking of electrodes by the device. The flexibility of the differential design can be adapted to complex scenarios, while reducing the dependence on the electrical control system and improving the reliability and stability of the equipment operation.
[0007] Preferably, the stacking mechanism further includes a back plate, which is fixedly connected to the top surface of the workbench. A sliding column is fixedly connected to the rear side of the inner plate. A guide groove is formed on the surface of the back plate. The circumferential surface of the sliding column is slidably connected to the inner wall of the guide groove formed on the surface of the back plate. When the outer frame moves inward, the outer frame drives the inner plate to move inward, and the inner plate drives the sliding column to move inward. When the sliding column moves to the working range of the back plate, the sliding column moves along the guide groove formed on the surface of the back plate. The sliding column drives the inner plate to rotate on the inner wall of the outer frame. The inner plate rotates on the surface of the outer frame, which realizes the tilting effect of the electrode sheets on the inner plate. Gravity-assisted positioning and attitude adaptive adjustment optimize the diaphragm wrapping effect, reduce wrinkles and excessive stretching, simplify the equipment linkage logic, improve stacking efficiency, and optimize the bonding effect between the electrode sheets and the diaphragm.
[0008] Preferably, the packaging mechanism includes a rotating shaft rotatably connected to the inner wall of the back plate. A rocker arm is fixedly connected to the circumferential surface of the rotating shaft. The rear side of the rocker arm is in contact with the front side of the back plate. The rocker arm is positioned on the movement trajectory of the back plate. A laminating roller is rotatably connected to the front side of the rocker arm. A packaging roller is positioned on the front side of the back plate. The laminating roller is used to pull out the outer packaging of the electrode sheet on the packaging roller positioned on the front side of the back plate. As the outer frame moves inward, the inner plate drives the trigger rod to move inward. When the trigger rod moves to the position of the rocker arm... When in operation, the trigger rod presses against the rocker arm, causing the rocker arm to rotate. The rotation of the rocker arm drives the rotating shaft to rotate, which in turn drives the gear to rotate. The gear then drives the ratchet to rotate, which in turn drives the packaging roller to rotate. The trigger rod presses against the packaging roller to rotate, achieving a rotational release effect on the packaging film wound on the roller. This active rotation release of the packaging film precisely controls the tension, conveying speed, and unwinding posture of the film, reducing problems such as film wrinkles, stretching deformation, and deviation caused by passive unwinding, thus improving the consistency of film coating and the quality of battery cell packaging.
[0009] Preferably, a ratchet is fixedly connected to the rear end of the packaging roller, a gear is fixedly connected to the rear end of the rotating shaft, the rotating shaft and the gear mesh with each other, a rocker arm two is rotatably connected to the front side of the packaging roller, and a rocker arm three is rotatably connected to the end of the rocker arm two away from the packaging roller.
[0010] Preferably, the packaging mechanism further includes a fixed block, which is rotatably connected to the end of rocker arm three away from rocker arm two. A baffle is provided on the top surface of the worktable, and the fixed block is slidably connected to the inner wall of the baffle. A rocker arm four is hinged to the surface of the fixed block via a torsion spring. A flat column is rotatably connected to the end of rocker arm four away from the fixed block. While the packaging roller rotates, the packaging roller drives rocker arm two to rotate, which in turn drives rocker arm three to rotate. The rotation of rocker arm three causes the fixed block to slide upwards on the inner wall of the baffle. When the fixed block slides to its highest position, the packaging roller continues to rotate, driving rocker arm two to rotate, which in turn drives rocker arm three to rotate, and the rotation of rocker arm three causes the fixed block to slide upwards on the inner wall of the baffle. The fixed block moves downwards, simultaneously driving the rocker arm four downwards. The rocker arm four then moves the flattening column downwards. When the circumferential surface of the flattening column contacts the packaged electrode sheet, the electrode sheet compresses it, causing the flattening column to roll to both sides and twist the torsion spring hinged between the fixed block and the rocker arm four. The packaging roller then drives the flattening column to roll on the surface of the packaged electrode sheet, achieving a smooth surface for the packaging film. Through controllable surface pressure, wrinkles and bubbles in the packaging film are eliminated, enhancing the adhesion between the film and the battery cell stack. At the same time, the positional offset of the film is calibrated, improving the stability of the subsequent heat sealing process and the battery cell packaging quality.
[0011] Preferably, the multi-layer stacking mechanism includes an inclined pressure block, which is fixedly connected to the surface of the slider, a stacking box is fixedly connected to the inner wall of the worktable, a base is fixedly connected to the bottom surface of the worktable, and a multi-stage telescopic rod is fixedly connected to the top surface of the base.
[0012] Preferably, the telescopic end of the multi-stage telescopic rod is fixedly connected to a base plate, which is set on the movement trajectory of the slider. The surface of the inclined pressure block is hinged to a rotating pin by a torsion spring, and the side of the base plate is hinged to a limit pin by a torsion spring. The rotating pin is set on the movement trajectory of the base plate and the limit pin. As the slider moves inward, it drives the inclined pressure block to move inward. When the inclined pressure block moves inward to the working range of the base plate, it contacts and presses the base plate downward. As the base plate moves downward, it drives the rotating pin to rotate until it descends to the next working position. When the base plate descends to the bottom of the stacking box, the stacking is completed. At this time, due to the action of the multi-stage telescopic rod, the multi-stage telescopic rod drives the base plate to move upward and twists the limit pin until the base plate returns to its original position. This process is repeated, with the inclined pressure block pressing the base plate downward and stacking the electrodes on the surface of the base plate, realizing multi-layer automatic stacking of the device. This reduces the error between electrode positions caused by multiple single-layer stackings and improves the stacking quality of the device.
[0013] Preferably, the multi-layer stacking mechanism further includes a fixed base, which is fixedly connected to the inner wall of the workbench. An electric push rod is fixedly connected to the rear side of the fixed base. A push plate is fixedly connected to the telescopic end of the electric push rod. The push plate is slidably connected to the inner wall of the stacking box. When the bottom plate descends to the bottom surface of the stacking box, the electric push rod receives an electrical signal from the bottom plate and extends its telescopic end. The extension of the telescopic end of the electric push rod drives the push plate to move backward. When the push plate contacts the stacked electrode sheets, the push plate pushes the electrode sheets to move backward until the electrode sheets are pushed out of the working range of the bottom plate. The electric push rod pushes the electrode sheets to move backward, realizing automatic unloading of the device. This replaces manual material handling, avoiding operator fatigue caused by long-term repetitive material handling, which could lead to material handling errors. This improves production efficiency, ensures cell quality, and reduces labor costs and safety risks.
[0014] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This automatic electrode stacking device for soft-pack lithium batteries in new energy vehicles operates through the coordinated operation of a spiral shaft, slider, electrode box, trigger rod, outer frame, inner plate, back plate, and sliding column. The motor output inside the worktable drives the outer frame to move inward, bringing the electrode sheets stored in the electrode box to the stacking position. This achieves differential automatic stacking of the electrode sheets, leveraging the flexibility of the differential design to adapt to complex scenarios while reducing reliance on the electronic control system and improving the reliability and stability of the equipment. The sliding column drives the inner plate to rotate on the surface of the outer frame, achieving the tilting effect of the electrode sheets on the inner plate. Gravity-assisted positioning and attitude adaptive adjustment optimize the diaphragm wrapping effect, reducing wrinkles and excessive stretching, simplifying the equipment linkage logic, improving stacking efficiency, and optimizing the adhesion between the electrode sheets and the diaphragm.
[0015] 2. This automatic electrode stacking device for soft-pack lithium batteries in new energy vehicles operates through the coordinated operation of a rotating shaft, rocker arm one, coating roller, ratchet, gear, rocker arm two, rocker arm three, fixed block, rocker arm four, and leveling column. The trigger rod squeezes and drives the packaging roller to rotate, achieving a rotational release effect on the packaging film wound on the roller. This active rotation releases the packaging film, precisely controlling the tension, conveying speed, and unwinding posture of the film. This reduces problems such as film wrinkles, stretching deformation, and misalignment caused by passive unwinding, improving the consistency of coating and the quality of cell encapsulation. The packaging roller drives the leveling column to roll on the surface of the packaged electrode, achieving a smooth surface of the packaging film. Through controllable surface pressure, wrinkles and bubbles in the packaging film are eliminated, strengthening the adhesion between the film and the cell stack. Simultaneously, the positional deviation of the film is calibrated, improving the stability of subsequent heat-sealing processes and the quality of cell encapsulation.
[0016] 3. This automatic electrode stacking device for soft-pack lithium batteries in new energy vehicles utilizes the coordinated operation of inclined pressure blocks, stacking boxes, bases, multi-stage telescopic rods, base plates, rotating pins, limit pins, fixed seats, electric push rods, and push plates. The inclined pressure blocks press the base plate downwards, stacking the electrode sheets on the surface of the base plate, achieving multi-layer automatic stacking. This reduces errors in electrode position caused by repeated single-layer stacking, improving the quality of electrode stacking. The electric push rods push the electrode sheets backwards, achieving automatic unloading. This replaces manual material handling, avoiding operator fatigue caused by prolonged repetitive material handling, which could lead to material handling errors. This improves production efficiency, ensures cell quality, and reduces labor costs and safety risks. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a half-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the stacking mechanism of the present invention; Figure 4For the present invention Figure 3 Enlarged view of the mechanism at point A in the middle; Figure 5 This is a schematic diagram of the packaging mechanism of the present invention; Figure 6 This is a schematic diagram of the ratchet structure of the present invention; Figure 7 This is a schematic diagram of the fixing block structure of the present invention; Figure 8 This is a schematic diagram of the multi-layer stacking mechanism of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of the structure at point B in the middle; Figure 10 This is a schematic diagram of the stacked box structure of the present invention.
[0018] In the diagram: 1. Workbench; 2. Support; 3. Stacking mechanism; 31. Spiral shaft; 32. Slider; 33. Electrode box; 34. Trigger rod; 35. Outer frame; 36. Inner plate; 37. Back plate; 38. Sliding column; 4. Glass plate; 5. Packaging mechanism; 51. Rotating shaft; 52. Rocker arm one; 53. Coating roller; 54. Ratchet; 55. Gear; 56. Rocker arm two; 57. Rocker arm three; 58. Fixing block; 59. Rocker arm four; 510. Flattening column; 6. Multi-layer stacking mechanism; 61. Inclined pressure block; 62. Stacking box; 63. Base; 64. Multi-stage telescopic rod; 65. Base plate; 66. Rotating pin; 67. Limiting pin; 68. Fixing seat; 69. Electric push rod; 610. Push plate. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Please see Figures 1-10 One embodiment of the present invention is: an automatic stacking device for soft-pack lithium battery electrodes for new energy vehicles, including a workbench 1, a support 2 fixedly connected to the top surface of the workbench 1, a stacking mechanism 3 arranged inside the workbench 1, a glass plate 4 fixedly connected to the inner wall of the support 2, a packaging mechanism 5 arranged above the workbench 1, and a multi-layer stacking mechanism 6 arranged inside the workbench 1. The stacking mechanism 3 includes a spiral shaft 31. A motor is installed inside the worktable 1. The spiral shaft 31 is fixedly connected to the output end of the motor. A slider 32 is spirally connected to the circumferential surface of the spiral shaft 31. A groove is opened on the top surface of the worktable 1. The slider 32 is slidably connected to the inner wall of the groove opened on the top surface of the worktable 1. An outer frame 35 is fixedly connected to the top surface of the slider 32. A trigger rod 34 is fixedly connected to the rear side of the outer frame 35. The bottom surface of the outer frame 35 is in contact with the top surface of the worktable 1.
[0021] The top surface of the workbench 1 is fixedly connected to an electrode box 33. The surface of the electrode box 33 is provided with a discharge groove. The top surface of the outer frame 35 is in contact with the inner wall of the discharge groove on the surface of the electrode box 33. The inner wall of the outer frame 35 is rotatably connected to an inner plate 36. The motor output end provided inside the workbench 1 drives the outer frame 35 to move inward, bringing the electrode stored inside the electrode box 33 to the stacking position. This realizes the differential automatic stacking of the electrode by the device. The flexibility of the differential design can be adapted to complex scenarios, while reducing the dependence on the electrical control system and improving the reliability and stability of the equipment operation.
[0022] The stacking mechanism 3 also includes a back plate 37, which is fixedly connected to the top surface of the workbench 1. A sliding column 38 is fixedly connected to the rear side of the inner plate 36. A guide groove is provided on the surface of the back plate 37. The circumferential surface of the sliding column 38 is slidably connected to the inner wall of the guide groove provided on the surface of the back plate 37. The sliding column 38 drives the inner plate 36 to rotate on the surface of the outer frame 35, realizing the tilting effect of the electrode sheets on the inner plate 36. Gravity-assisted positioning and attitude adaptive adjustment are used to optimize the diaphragm wrapping effect, reduce wrinkles and excessive stretching, simplify the equipment linkage logic, improve stacking efficiency, and optimize the bonding effect between the electrode sheets and the diaphragm.
[0023] The packaging mechanism 5 includes a rotating shaft 51, which is rotatably connected to the inner wall of the back plate 37. A rocker arm 52 is fixedly connected to the circumferential surface of the rotating shaft 51. The rear side of the rocker arm 52 is in contact with the front side of the back plate 37. The rocker arm 52 is set on the movement trajectory of the back plate 37. A film-coating roller 53 is rotatably connected to the front side of the rocker arm 52. A packaging roller is set on the front side of the back plate 37. The film-coating roller 53 is used to pull out the outer packaging of the electrode sheet on the packaging roller set on the front side of the back plate 37. The trigger rod 34 squeezes and drives the packaging roller to rotate, realizing the rotational release effect of the packaging film wound on the packaging roller. The active rotation releases the packaging film, accurately controls the tension, conveying speed and unwinding posture of the packaging film, reduces the problems of film wrinkles, stretching deformation and deviation caused by passive unwinding, and improves the consistency of film coating and the quality of battery cell packaging.
[0024] A ratchet 54 is fixedly connected to the rear end of the packaging roller, and a gear 55 is fixedly connected to the rear end of the rotating shaft 51. The rotating shaft 51 and the gear 55 mesh with each other. A rocker arm 2 56 is rotatably connected to the front side of the packaging roller, and a rocker arm 3 57 is rotatably connected to the end of the rocker arm 2 56 away from the packaging roller.
[0025] The packaging mechanism 5 also includes a fixing block 58, which is rotatably connected to the end of the rocker arm 3 57 away from the rocker arm 2 56. A baffle is provided on the top surface of the worktable 1, and the fixing block 58 is slidably connected to the inner wall of the baffle. The surface of the fixing block 58 is hinged to the rocker arm 4 59 by a torsion spring. The end of the rocker arm 4 59 away from the fixing block 58 is rotatably connected to a flattening column 510. The flattening column 510 is driven by the packaging roller to roll on the surface of the packaged electrode sheet, thereby achieving the flatness of the packaging film on the surface of the packaged electrode sheet. Through the controllable surface pressure, wrinkles and bubbles in the packaging film are eliminated, the adhesion between the film material and the battery cell is strengthened, and the positional offset of the film material is calibrated, thereby improving the stability of the subsequent heat sealing process and the battery cell packaging quality.
[0026] Working Principle: During operation, the motor located on the left side of the workbench 1 first drives the spiral shaft 31 to rotate. This rotation causes the slider 32 to slide inwards along the inner wall of the workbench 1. The slider 32 then causes the outer frame 35 to slide inwards along the top surface of the workbench 1. The outer frame 35 then moves the stored electrodes inside the electrode box 33 inwards until they reach the stacking position. Next, the motor on the right side of the workbench 1 starts, driving the spiral shaft 31 to rotate. This rotation again causes the slider 32 to slide inwards along the inner wall of the workbench 1. The slider 32 then moves the outer frame 35 inwards along the top surface of the workbench 1. The outer frame 35 then moves the stored electrodes inside the electrode box 33 inwards until they reach the stacking position. This process repeats, with the output of the motor inside the workbench 1 driving the outer frame 35 inwards to move the stored electrodes inside the electrode box 33. The electrode sheets are brought to the stacking position, enabling differential automatic stacking of the electrode sheets by the device. The flexibility of the differential design adapts to complex scenarios, while reducing reliance on the electronic control system and improving the reliability and stability of the equipment operation. As the outer frame 35 moves inward, the outer frame 35 drives the inner plate 36 to move inward, and the inner plate 36 drives the sliding column 38 to move inward. When the sliding column 38 moves to the working range of the back plate 37, the sliding column 38 moves along the guide groove opened on the surface of the back plate 37. The sliding column 38 drives the inner plate 36 to rotate on the inner wall of the outer frame 35. The inner plate 36 rotates on the surface of the outer frame 35 driven by the sliding column 38, realizing the tilting effect of the electrode sheets on the inner plate 36. Gravity-assisted positioning and attitude adaptive adjustment optimize the diaphragm wrapping effect, reduce wrinkles and excessive stretching, simplify the equipment linkage logic, improve stacking efficiency, and optimize the bonding effect between the electrode sheets and the diaphragm.
[0027] As the outer frame 35 moves inward, the inner plate 36 drives the trigger rod 34 to move inward. When the trigger rod 34 moves to the working range of rocker arm 52, the trigger rod 34 presses against rocker arm 52 and causes rocker arm 52 to rotate. The rotation of rocker arm 52 causes the rotating shaft 51 to rotate, the rotating shaft 51 causes the gear 55 to rotate, the gear 55 causes the ratchet 54 to rotate, and the ratchet 54 causes the packaging roller to rotate. The pressing action of the trigger rod 34 on the packaging roller achieves the effect of rotating and releasing the packaging film wound on the packaging roller. The active rotation releases the packaging film, precisely controlling the tension, conveying speed, and unwinding posture of the packaging film, reducing problems such as film wrinkles, stretching deformation, and deviation caused by passive unwinding, and improving the consistency of film coating and the quality of battery cell packaging. At the same time as the packaging roller rotates, the packaging roller drives rocker arm 56 to rotate, the rotation of rocker arm 56 drives rocker arm 57 to rotate, and the rotation of rocker arm 57 causes the fixed block 58 to move towards the inner wall of the baffle. As the fixed block 58 slides to its highest position, the packaging roller continues to rotate, causing rocker arm 2 56 to rotate. The rotation of rocker arm 2 56 causes rocker arm 3 57 to rotate, which in turn causes the fixed block 58 to move downward. Simultaneously, the fixed block 58 causes rocker arm 4 59 to move downward, which in turn causes the flattening column 510 to move downward. When the circumferential surface of the flattening column 510 contacts the packaged electrode sheet, the electrode sheet compresses it, causing the flattening column 510 to roll to both sides and twist the torsion spring hinged between the fixed block 58 and rocker arm 4 59. The packaging roller drives the flattening column 510 to roll on the surface of the packaged electrode sheet, thus achieving the flatness of the packaging film on the surface of the packaged electrode sheet. Through controllable surface pressure, wrinkles and bubbles in the packaging film are eliminated, the adhesion between the film material and the battery cell is strengthened, and the positional offset of the film material is calibrated, improving the stability of the subsequent heat sealing process and the battery cell packaging quality.
[0028] Please see Figures 1-10 Based on the above embodiments, in another embodiment of the present invention, the multi-layer stacking mechanism 6 includes an inclined pressure block 61, the inclined pressure block 61 is fixedly connected to the surface of the slider 32, the inner wall of the workbench 1 is fixedly connected to a stacking box 62, the bottom surface of the workbench 1 is fixedly connected to a base 63, and the top surface of the base 63 is fixedly connected to a multi-stage telescopic rod 64.
[0029] The telescopic end of the multi-stage telescopic rod 64 is fixedly connected to a base plate 65. The base plate 65 is set on the movement trajectory of the slider 32. The surface of the inclined pressure block 61 is hinged with a rotating pin 66 by a torsion spring. The side of the base plate 65 is hinged with a limit pin 67 by a torsion spring. The rotating pin 66 is set on the movement trajectory of the base plate 65 and the limit pin 67. The inclined pressure block 61 presses the base plate 65 downward and stacks the electrode sheets on the surface of the base plate 65, realizing the automatic multi-layer stacking of the device. This reduces the error between electrode sheet positions caused by multiple single-layer stackings and improves the stacking quality of the device.
[0030] The multi-layer stacking mechanism 6 also includes a fixed base 68, which is fixedly connected to the inner wall of the workbench 1. An electric push rod 69 is fixedly connected to the rear side of the fixed base 68. A push plate 610 is fixedly connected to the telescopic end of the electric push rod 69. The push plate 610 is slidably connected to the inner wall of the stacking box 62. The electric push rod 69 pushes the electrode sheet to move backward, realizing automatic unloading of the device. This replaces manual material handling, avoiding operator fatigue caused by long-term repetitive material handling, which may lead to material handling errors. It improves production efficiency, ensures cell quality, and reduces labor costs and safety risks.
[0031] Working principle: As the slider 32 moves inward, it drives the inclined pressure block 61 to move inward. When the inclined pressure block 61 moves inward to the working range of the base plate 65, it contacts and presses the base plate 65 downward. Simultaneously, the base plate 65 moves downward, driving the rotating pin 66 to rotate until it reaches the next working position. When the base plate 65 reaches the bottom of the stacking box 62, stacking is completed. At this point, due to the action of the multi-stage telescopic rod 64, the multi-stage telescopic rod 64 drives the base plate 65 upward and twists the limiting pin 67 until the base plate 65 returns to its original position. This process repeats, with the inclined pressure block 61 pressing the base plate 65 downward and stacking the electrodes on the surface of the base plate 65, achieving multi-layer automatic stacking of the device and reducing the need for multiple single-layer stacking operations. Stacking leads to errors in electrode position, improving the quality of electrode stacking. When the base plate 65 descends to the bottom of the stacking box 62, the electric push rod 69 receives an electrical signal from the base plate 65 and extends its telescopic end. The extension of the telescopic end of the electric push rod 69 drives the push plate 610 to move backward. When the push plate 610 contacts the stacked electrode, it pushes the electrode backward until the electrode is pushed out of the working range of the base plate 65. The electric push rod 69 pushes the electrode backward, realizing automatic unloading of the device. This replaces manual material handling, avoiding operator fatigue caused by prolonged repetitive material handling, which could lead to material handling errors. This improves production efficiency, ensures cell quality, and reduces labor costs and safety risks.
[0032] This invention provides an automatic electrode stacking device for soft-pack lithium batteries in new energy vehicles. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.
Claims
1. An automatic stacking device for soft-pack lithium battery electrodes for new energy vehicles, comprising a worktable (1), characterized in that: The top surface of the workbench (1) is fixedly connected to a support (2), the inside of the workbench (1) is provided with a stacking mechanism (3), the inner wall of the support (2) is fixedly connected with a glass plate (4), the top of the workbench (1) is provided with a packaging mechanism (5), and the inside of the workbench (1) is provided with a multi-layer stacking mechanism (6). The stacking mechanism (3) includes a spiral shaft (31). A motor is installed inside the worktable (1). The spiral shaft (31) is fixedly connected to the output end of the motor. A slider (32) is spirally connected to the circumferential surface of the spiral shaft (31). A groove is opened on the top surface of the worktable (1). The slider (32) is slidably connected to the inner wall of the groove opened on the top surface of the worktable (1). An outer frame (35) is fixedly connected to the top surface of the slider (32). A trigger rod (34) is fixedly connected to the rear side of the outer frame (35). The bottom surface of the outer frame (35) is in contact with the top surface of the worktable (1).
2. The automatic electrode stacking device for soft-pack lithium batteries for new energy vehicles according to claim 1, characterized in that: The top surface of the workbench (1) is fixedly connected to an electrode box (33), and a discharge groove is provided on the surface of the electrode box (33). The top surface of the outer frame (35) is in contact with the inner wall of the discharge groove on the surface of the electrode box (33), and an inner plate (36) is rotatably connected to the inner wall of the outer frame (35).
3. The automatic electrode stacking device for soft-pack lithium batteries for new energy vehicles according to claim 2, characterized in that: The stacking mechanism (3) also includes a back plate (37), which is fixedly connected to the top surface of the workbench (1). A sliding column (38) is fixedly connected to the rear side of the inner plate (36). A guide groove is provided on the surface of the back plate (37), and the circumferential surface of the sliding column (38) is slidably connected to the inner wall of the guide groove on the surface of the back plate (37).
4. The automatic electrode stacking device for soft-pack lithium batteries for new energy vehicles according to claim 3, characterized in that: The packaging mechanism (5) includes a rotating shaft (51), which is rotatably connected to the inner wall of the back plate (37). A rocker arm (52) is fixedly connected to the circumferential surface of the rotating shaft (51). The rear side of the rocker arm (52) is in contact with the front side of the back plate (37). The rocker arm (52) is set on the movement trajectory of the back plate (37). A film-coating roller (53) is rotatably connected to the front side of the rocker arm (52). A packaging roller is provided on the front side of the back plate (37). The film-coating roller (53) is used to pull out the outer packaging of the electrode sheet on the packaging roller provided on the front side of the back plate (37).
5. The automatic stacking device for soft-pack lithium battery electrodes for new energy vehicles according to claim 4, characterized in that: A ratchet (54) is fixedly connected to the rear end of the packaging roller, and a gear (55) is fixedly connected to the rear end of the rotating shaft (51). The rotating shaft (51) and the gear (55) mesh with each other. A rocker arm two (56) is rotatably connected to the front side of the packaging roller, and a rocker arm three (57) is rotatably connected to the end of the rocker arm two (56) away from the packaging roller.
6. The automatic electrode stacking device for soft-pack lithium batteries for new energy vehicles according to claim 5, characterized in that: The packaging mechanism (5) also includes a fixing block (58), which is rotatably connected to the end of the rocker arm three (57) away from the rocker arm two (56). A baffle is provided on the top surface of the workbench (1). The fixing block (58) is slidably connected to the inner wall of the baffle. A rocker arm four (59) is hinged to the surface of the fixing block (58) by a torsion spring. A flat column (510) is rotatably connected to the end of the rocker arm four (59) away from the fixing block (58).
7. The automatic electrode stacking device for soft-pack lithium batteries for new energy vehicles according to claim 6, characterized in that: The multi-layer stacking mechanism (6) includes a slanted pressure block (61), which is fixedly connected to the surface of the slider (32). The inner wall of the workbench (1) is fixedly connected to a stacking box (62), and the bottom surface of the workbench (1) is fixedly connected to a base (63). The top surface of the base (63) is fixedly connected to a multi-stage telescopic rod (64).
8. The automatic stacking device for soft-pack lithium battery electrodes for new energy vehicles according to claim 7, characterized in that: The telescopic end of the multi-stage telescopic rod (64) is fixedly connected to a base plate (65). The base plate (65) is set on the movement trajectory of the slider (32). The surface of the inclined pressure block (61) is hinged with a rotating pin (66) by a torsion spring. The side of the base plate (65) is hinged with a limit pin (67) by a torsion spring. The rotating pin (66) is set on the movement trajectory of the base plate (65) and the limit pin (67) is set on the movement trajectory of the limit pin (67).
9. The automatic electrode stacking device for soft-pack lithium batteries for new energy vehicles according to claim 8, characterized in that: The multi-layer stacking mechanism (6) also includes a fixed seat (68), which is fixedly connected to the inner wall of the workbench (1). An electric push rod (69) is fixedly connected to the rear side of the fixed seat (68), and a push plate (610) is fixedly connected to the telescopic end of the electric push rod (69). The push plate (610) is slidably connected to the inner wall of the stacking box (62).