Cutting and stacking integrated equipment

Abstract

The utility model discloses cutting and stacking integrated equipment. The cutting and stacking integrated equipment comprises a stacking station and a hot pressing station; the hot-pressing station comprises a supporting plate, a feeding mechanism, a pre-hot-pressing mechanism, a hot-pressing mechanism, a discharging mechanism and a conveying platform. The feeding mechanism is used for placing a to-be-treated roll core on a supporting plate, and the pre-hot-pressing mechanism is used for transferring the supporting plate bearing the to-be-treated roll core out of the feeding mechanism and performing pre-hot-pressing on the to-be-treated roll core; the hot pressing mechanism is used for transferring the supporting plate bearing the to-be-treated roll core out of the pre-hot pressing mechanism and performing hot pressing on the to-be-treated roll core; the discharging mechanism is used for separating the to-be-treated roll core transferred out of the hot-pressing mechanism from the supporting plate. The conveying platform is used for conveying the supporting plates transferred out of the discharging mechanism to the feeding mechanism. The production efficiency of the battery cell can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery cell production equipment, and in particular to cutting and stacking equipment. Background Art

[0002] In the production process of secondary battery cells, in order to improve production efficiency, cutting and stacking equipment is usually used to produce cells. The cutting and stacking equipment usually includes a film-making station, a lamination station and a hot pressing station. After the positive and negative electrode sheets are cut and produced at the film-making station, the positive and negative electrode sheets and the diaphragms are stacked at the lamination station to form a cell, and finally the cell is hot pressed at the hot pressing station. However, for large-sized cells, the cell needs to stay in the hot pressing station for a long time to complete the hot pressing. Therefore, the production efficiency of the cell is reduced. Utility Model Content

[0003] The present application provides a cutting and stacking device that can improve the production efficiency of battery cells.

[0004] The present application provides a cutting and stacking integrated device, the cutting and stacking integrated device comprising a lamination station and a hot pressing station;

[0005] The lamination station comprises a first end, a second end, a first side, and a second side, the first end and the second end are arranged opposite to each other, the first side and the second side are both connected between the first end and the second end, and the first side and the second side are arranged opposite to each other;

[0006] The hot pressing station includes a support plate, a loading mechanism, a preheating and pressing mechanism, a hot pressing mechanism, a unloading mechanism and a conveying platform;

[0007] The feeding mechanism and the preheating and pressing mechanism are located outside any one of the first side portion and the second side portion, and are sequentially arranged along the extension direction of the first side portion, the feeding mechanism is used to place the core to be processed on the support plate, and the preheating and pressing mechanism is used to transfer the support plate carrying the core to be processed from the feeding mechanism, and preheat and press the core to be processed;

[0008] The hot pressing mechanism is located outside any one of the first end and the second end, and is used to transfer the pallet carrying the core to be processed out of the pre-heating and pressing mechanism, and hot press the core to be processed;

[0009] The unloading mechanism is located at a side of the hot pressing mechanism away from the lamination station, and is used to separate the to-be-processed core transferred from the hot pressing mechanism from the pallet;

[0010] The conveying platform is located on a side of the loading mechanism and the preheating and pressing mechanism away from the lamination station, and the conveying platform is used to convey the pallet transferred from the unloading mechanism to the loading mechanism.

[0011] In a possible implementation manner, the unloading mechanism includes an unloading manipulator and a turning platform;

[0012] The unloading robot is used to place the pallet carrying the core to be processed transferred from the hot pressing mechanism on the flipping platform, and the flipping platform is used to flip the core to be processed and the pallet so that the pallet is placed on the core to be processed.

[0013] In a possible implementation, the flipping platform includes a lifting mechanism and a flipping mechanism, the lifting mechanism includes a base, a driving unit and a receiving platform, the receiving platform is used to support the pallet carrying the roll core to be processed, the driving unit is connected between the base and the receiving platform, and the driving unit can drive the receiving platform to approach or move away from the base along the height direction of the cutting and stacking device;

[0014] The flipping mechanism includes two flipping parts, and the two flipping parts are respectively connected to the opposite sides of the base along the length direction, each of the flipping parts includes a guide rail, a sliding body and a rotating clamp, the guide rail is connected to the base, the sliding body is connected to the guide rail and can slide along the guide rail, the rotating clamp is connected to the sliding body, the rotating clamp is used to clamp the core to be processed and the pallet, and the rotating clamp can rotate relative to the sliding body to exchange the positions of the core to be processed and the pallet.

[0015] In a possible embodiment, the unloading mechanism also includes a pallet unloading device and a pallet transfer platform, the pallet unloading device includes a connecting seat, a transfer robot and a transfer robot, the transfer robot and the transfer robot are both slidably connected to the connecting seat, the transfer robot is used to clamp the pallet from the receiving platform, and after flipping the pallet, place the pallet on the pallet transfer platform, and the transfer robot is used to transfer the pallet from the pallet transfer platform to the conveying platform.

[0016] In a possible embodiment, the connecting seat includes a first slide rail, a second slide rail and a third slide rail, the first slide rail extends along the length direction of the pallet unloading device, the second slide rail and the third slide rail are spaced apart and are both slidably connected to the first slide rail, the second slide rail and the third slide rail extend along the height direction of the pallet unloading device, the transfer robot is slidably connected to the second slide rail, and the transfer robot is slidably connected to the third slide rail.

[0017] In a possible implementation, the loading mechanism includes an upper pallet manipulator, a loading platform and an upper cell manipulator, the upper pallet manipulator is used to place the pallet on the loading platform, and the upper cell manipulator is used to place the core to be processed on the pallet.

[0018] In a possible embodiment, the hot pressing station also includes a cache mechanism, which includes a first cache platform and a second cache platform, wherein the first cache platform is used to accommodate the pallet carrying the core to be processed that is transferred from the pre-heat pressing mechanism, and the second cache platform is used to accommodate the pallet carrying the core to be processed that is transferred from the hot pressing mechanism.

[0019] In a possible embodiment, the hot pressing mechanism is located on the outside of the second end portion, and the cutting and stacking equipment also includes a film making station, which is located on the outside of the first end portion. The film making station is used to prepare positive and negative electrode sheets, and the stacking station is used to provide a diaphragm, and the diaphragm is sandwiched between the positive electrode sheet and the negative electrode sheet to form a roll core to be processed.

[0020] In a possible embodiment, the stacking station includes a positive electrode sheet conveying line, a negative electrode sheet conveying line and a stacking mechanism, wherein the positive electrode sheet conveying line and the negative electrode sheet conveying line are respectively located on both sides of the stacking mechanism, the positive electrode sheet conveying line is used to convey the positive electrode sheet to the stacking mechanism, and the negative electrode sheet conveying line is used to convey the negative electrode sheet to the stacking mechanism.

[0021] In a possible implementation manner, the number of the lamination mechanisms is four.

[0022] The beneficial effect of the present application is that by setting a preheating and pressing mechanism, the core to be processed can be preheated and pressed in the preheating and pressing mechanism before passing through the hot pressing mechanism, thereby shortening the residence time of the core to be processed in the hot press. The hot press and the preheating and pressing machine can work at the same time. When the hot pressing mechanism is hot pressing the previous batch of cores to be processed, the preheating and pressing mechanism can also preheat and press the next batch of cores to be processed. Therefore, the setting of the preheating and pressing mechanism can speed up the production rhythm of the cutting and stacking equipment and improve the production efficiency of the battery cells. The layout of the cutting and stacking equipment is relatively compact, which makes the connection between the various processing steps of the core to be processed smoother, thereby improving the production rhythm of the cutting and stacking equipment and improving the production efficiency of the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative work.

[0024] Figure 1 A simplified structural diagram of the cutting and stacking device provided in an embodiment of the present application;

[0025] Figure 2 for Figure 1 A schematic structural diagram of a composite device of a material unloading mechanism of the cutting and stacking device shown;

[0026] Figure 3 for Figure 1 A schematic diagram of the structure of the turning platform of the unloading mechanism of the cutting and stacking equipment shown;

[0027] Figure 4 for Figure 1 A schematic structural diagram of a pallet unloading device of an unloading mechanism of the cutting and stacking equipment shown;

[0028] Figure 5 for Figure 1 A schematic structural diagram of the cache mechanism of the cutting and stacking device shown. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] See also Figure 1 , Figure 1 A simplified structural diagram of the cutting and stacking device provided in an embodiment of the present application.

[0031] The present application provides a cutting and stacking device 1000, comprising a film-making station 300, a stacking station 200 and a hot pressing station 100. Along a first direction, a portion of the film-making station 300 and the hot pressing station 100 are located on opposite sides of the stacking station 200. Along a second direction, another portion of the hot pressing station 100 is located on one side of the stacking station 200. The first direction and the second direction are perpendicular to each other and are both perpendicular to the height direction of the cutting and stacking device 1000. In this embodiment, the first direction is the length direction of the cutting and stacking device 1000, and the second direction is the width direction of the cutting and stacking device 1000. In other embodiments, the first direction may also be the width direction of the cutting and stacking device 1000, and the second direction may be the length direction of the cutting and stacking device 1000.

[0032] It should be noted that the cutting and stacking equipment 1000 provided in the present application is only applicable to the production of laminated battery cells. Figure 1 What is shown is only a simplified structural diagram of the cutting and stacking device 1000 of the present application, and it does not constitute a limitation on the specific structure of the cutting and stacking device 1000.

[0033] The film-making station 300 includes a positive electrode film-making station 310 and a negative electrode film-making station 320. The positive electrode film-making station 310 and the negative electrode film-making station 320 are arranged at intervals along the second direction. The positive electrode film-making station 310 and the negative electrode film-making station 320 both include a pole piece unwinding mechanism 330, a pole ear die-cutting mechanism 340, a pole piece cutting mechanism 350, a pole piece detection mechanism 360 and a pole piece feeding mechanism 370. The pole piece unwinding mechanism 330, the pole ear die-cutting mechanism 340, the pole piece cutting mechanism 350, the pole piece detection mechanism 360 and the pole piece feeding mechanism 370 are arranged in sequence along the first direction. The positive electrode film-making station 310 is used to form a positive pole piece with a positive pole ear, and to transport the positive pole piece to the lamination station 200. The negative electrode film-making station 320 is used to form a negative pole piece with a negative pole ear, and to transport the negative pole piece to the lamination station 200.

[0034] The pole piece unwinding mechanism 330 is used to unwind the material roll. The material roll passes through the pole ear die-cutting mechanism 340 and the pole piece cutting mechanism 350 in sequence. The pole ear die-cutting mechanism 340 is used to die-cut the material roll to form a pole ear on the material roll. The pole piece cutting mechanism 350 is used to cut the portion of the material roll where the pole ear is formed to form a pole piece with a pole ear. The pole piece detection mechanism 360 is used to perform size detection and defect detection on each pole piece. The pole piece feeding mechanism 370 is used to transport the pole piece to the lamination station 200.

[0035] The lamination station 200 has a first end, a second end, a first side, and a second side. The first end and the second end are arranged opposite to each other along a first direction. The first side and the second side are both connected between the first end and the second end. The first side and the second side are arranged opposite to each other along a second direction.

[0036] It should be noted that the first end and the second end of the lamination station 200 only represent the two outermost oppositely disposed boundaries of the lamination station 200 along the first direction. The first side and the second side of the lamination station 200 only represent the two outermost oppositely disposed boundaries of the lamination station 200 along the second direction. The first end, the second end, the first side, and the second side do not represent the specific structure of the lamination station 200.

[0037] The lamination station 200 includes a positive electrode conveying line 210, a negative electrode conveying line 220 and a plurality of lamination mechanisms 230. Along the second direction, the positive electrode conveying line 210 and the negative electrode conveying line 220 are arranged at intervals. Among them, the positive electrode conveying line 210 is docked with the electrode sheet feeding mechanism 370 of the positive electrode production station 300. The electrode sheet feeding mechanism 370 of the positive electrode production station 300 can transfer the positive electrode sheet that has been tested to the positive electrode conveying line 210. The negative electrode conveying line 220 is docked with the electrode sheet feeding mechanism 370 of the negative electrode production station 300. The electrode sheet feeding mechanism 370 of the negative electrode production station 300 can transfer the negative electrode sheet that has been tested to the negative electrode conveying line 220.

[0038] Multiple lamination mechanisms 230 are located between the positive electrode conveying line 210 and the negative electrode conveying line 220. Along the first direction, multiple lamination mechanisms 230 are arranged at intervals. The positive electrode conveying line 210 is used to convey the positive electrode sheets to the multiple lamination mechanisms 230. The negative electrode conveying line 220 is used to convey the negative electrode sheets to the multiple lamination mechanisms 230.

[0039] Each lamination mechanism 230 includes a positive electrode positioning platform 231, a positive electrode conveying mechanism, a negative electrode positioning platform 232, a negative electrode conveying mechanism, a lamination platform 233, a diaphragm unwinding mechanism (not shown) and a diaphragm cutting jig (not shown). Along the second direction, the positive electrode positioning platform 231 and the negative electrode positioning platform 232 are located on opposite sides of the lamination platform 233. The positive electrode positioning platform 231 is located between the positive electrode conveying line 210 and the lamination platform 233. The negative electrode positioning platform 232 is located between the negative electrode conveying line 220 and the lamination platform 233. Along the height direction of the cutting and lamination integrated device 1000, the diaphragm unwinding mechanism and the diaphragm cutting jig are located above the lamination platform 233.

[0040] The positive electrode positioning station 231 is used to pre-position the positive electrode sheet. The negative electrode positioning station 232 is used to pre-position the negative electrode sheet. The positive electrode transport mechanism is used to transport the positive electrode sheet from the positive electrode conveying line 210 to the positive electrode positioning station 231, and to transport the positive electrode sheet from the positive electrode positioning station 231 to the stacking station 233. The negative electrode transport mechanism is used to transport the negative electrode sheet from the negative electrode conveying line 220 to the negative electrode positioning station 232, and to transport the negative electrode sheet from the negative electrode positioning station 232 to the stacking station 233.

[0041] The diaphragm unwinding mechanism is used to unwind the diaphragm roll. The diaphragm cutting jig is used to cut the diaphragm roll. The diaphragm and the positive electrode sheet and the negative electrode sheet are stacked on the stacking station 233. It can be understood that the sheet making station 300 is used to prepare the positive electrode sheet and the negative electrode sheet. The stacking station 200 is used to provide the diaphragm and sandwich the diaphragm between the positive electrode sheet and the negative electrode sheet to form a roll core to be processed.

[0042] In this embodiment, the lamination station 200 also includes a transportation mechanism. The transportation mechanism is used to transport the core to be processed from the multiple lamination mechanisms 230 to the hot pressing station 100. The number of lamination mechanisms 230 is four. In other embodiments, the number of lamination mechanisms 230 may also be three, five or more. This application does not impose specific restrictions on this. It should be noted that after the lamination station 200 forms the core to be processed, the hot pressing station 100 continues to process the core to be processed. After the core to be processed has passed all the processing steps of the hot pressing station 100, the core to be processed forms a battery cell.

[0043] The hot pressing station 100 includes a support plate, a loading mechanism 20 , a pre-heating and pressing mechanism 30 , a hot pressing mechanism 50 , a unloading mechanism 60 and a conveying platform 70 .

[0044] The pallet is used to carry the core to be processed. In this embodiment, the length dimension of the pallet is greater than the length dimension of the core to be processed. The width dimension of the pallet is greater than or equal to the width dimension of the core to be processed. It can be understood that when the core to be processed is carried on the pallet, the opposite ends of the pallet in the length direction are both protruded relative to the core to be processed, that is, margins are left at the opposite ends of the pallet in the length direction.

[0045] In other embodiments, the length of the pallet may be greater than or equal to the length of the core to be processed. The width of the pallet may be greater than the width of the core to be processed. That is, when the core to be processed is carried on the pallet, both opposite ends of the pallet in the width direction are protruding relative to the core to be processed, that is, margins are left at both opposite ends of the pallet in the width direction.

[0046] The feeding mechanism 20 and the preheating and pressing mechanism 30 are located outside any one of the first side portion and the second side portion of the lamination station 200, and are sequentially arranged along the extension direction of the first side portion. The hot pressing mechanism 50 is located outside any one of the first end portion and the second end portion. The unloading mechanism 60 is located on the side of the hot pressing mechanism 50 away from the lamination station 200. The conveying platform 70 is located on the side of the feeding mechanism 20 and the preheating and pressing mechanism 30 away from the lamination station 200.

[0047] In this embodiment, the film making station 300 is located outside the first end of the lamination station 200. The heat pressing mechanism 50 is located outside the second end of the lamination station 200. The feeding mechanism 20 and the preheating and pressing mechanism 30 are located on the first side of the lamination station 200.

[0048] The loading mechanism 20 is used to place the core to be processed on the pallet. The loading mechanism 20 includes a pallet loading manipulator, a loading platform and a cell loading manipulator. The pallet loading manipulator is used to place the pallet on the loading platform. The loading platform is used to carry the pallet. The cell loading manipulator is used to place the core to be processed on the pallet.

[0049] The preheating and pressing mechanism 30 is used to transfer the pallet carrying the core to be processed from the loading mechanism and preheat and press the core to be processed. The preheating and pressing mechanism 30 includes a preheating and pressing manipulator and a preheating and pressing machine. The preheating and pressing manipulator is used to transfer the pallet carrying the core to be processed from the loading platform to the preheating and pressing machine. The preheating and pressing manipulator is also used to take the pallet carrying the core to be processed out of the preheating and pressing machine.

[0050] The preheating press is used to preheat and press the battery cell. The preheating press includes a plurality of preheating press stations. Each preheating press station is provided with a preheating press fixture. Each preheating press fixture is used to clamp the core to be processed and the pallet, and preheat and press the core to be processed. In this embodiment, the number of preheating press stations is five. In other embodiments, the number of preheating press stations may also be two, three or more.

[0051] The hot pressing mechanism 50 is used to transfer the pallet carrying the core to be processed from the pre-heating and pressing mechanism, and to perform hot pressing on the core to be processed. The hot pressing mechanism 50 includes a hot pressing manipulator and a hot pressing machine. The hot pressing manipulator is used to transfer the pallet carrying the core to be processed to the hot pressing machine. The hot pressing manipulator is also used to take the pallet carrying the core to be processed out of the hot pressing machine.

[0052] The hot press is used to hot press the battery cells. In the present embodiment, the hot press includes a plurality of hot pressing stations. Each hot pressing station is provided with a hot pressing fixture. Each hot pressing fixture is used to clamp the core roll and the pallet to be processed, and to hot press the core roll to be processed. The heating temperature provided by the hot pressing fixture is higher than the heating temperature provided by the pre-heating pressing fixture. The pressure provided by the hot pressing fixture is greater than the pressure provided by the pre-heating pressing fixture. In the present embodiment, the number of hot pressing stations is five. In other embodiments, the number of hot pressing stations may also be two, three or more.

[0053] The unloading mechanism 60 includes a composite device 61, a turning platform 62, a pallet unloading device 63 and a pallet transfer platform.

[0054] See also Figure 2 , Figure 2 for Figure 1 A schematic structural diagram of the composite device of the unloading mechanism of the cutting and stacking equipment shown.

[0055] The composite device 61 includes a composite seat 611, a material unloading robot 612 and a battery cell unloading robot 613. The material unloading robot 612 is used to transfer the pallet carrying the core to be processed transferred from the hot pressing mechanism 50 to the turning platform 62. The battery cell unloading robot 613 is used to transfer the core to be processed from the turning platform 62.

[0056] The composite seat 611 is provided with a fourth slide rail, a fifth slide rail, a sixth slide rail, a seventh slide rail and an eighth slide rail. The fourth slide rail extends along the length direction of the composite device 61. The fifth slide rail and the seventh slide rail both extend along the width direction of the composite device 61. The fifth slide rail and the seventh slide rail are arranged at intervals and are both slidably connected to the fourth slide rail. The sixth slide rail is slidably connected to the fifth slide rail. The eighth slide rail is slidably connected to the seventh slide rail. The sixth slide rail and the eighth slide rail extend along the height direction of the composite device 61. The unloading robot 612 is slidably connected to the sixth slide rail. The battery cell unloading robot 613 is slidably connected to the eighth slide rail.

[0057] It can be understood that by connecting the unloading robot 612 and the battery cell unloading robot 613 to the composite seat 611 at the same time, the modularization degree of the cutting and stacking device 1000 can be improved, and the overall layout of the cutting and stacking device 1000 can be facilitated.

[0058] See also Figure 3 , Figure 3 for Figure 1 A schematic structural diagram of the turning platform of the unloading mechanism of the cutting and stacking equipment shown.

[0059] The flipping platform 62 is used to flip the core to be processed and the pallet so that the pallet is placed on the core to be processed. The flipping platform 62 includes a lifting mechanism 65 and a flipping mechanism 66. The lifting mechanism 65 includes a base 651, a driving unit 652, a support shaft 653, a receiving platform 654 and a fixed plate 655. The driving unit 652 and the support shaft 653 are both connected to the base 651. The driving unit 652 has a driving rod, and the driving rod extends along the height direction of the flipping platform 62. The driving rod can move along the height direction of the flipping platform 62. The support shaft 653 extends along the height direction of the flipping platform 62 and can be telescoped along the height direction of the flipping platform 62. The fixed plate 655 is fixedly connected to the base 651. The driving rod and the support shaft 653 are both penetrated by the fixed plate 655.

[0060] The receiving platform 654 includes a base 6541 and receiving columns 6542. A plurality of receiving columns 6542 are protrudingly disposed on the surface of the base 6541. The plurality of receiving columns 6542 are spaced apart from each other.

[0061] The receiving platform 654 is connected to one end of the driving rod away from the base 651 and one end of the supporting shaft 653 away from the base 651. Specifically, the surface of the base 6541 facing away from the receiving column 6542 is connected to the driving rod and the end of the supporting shaft 653 away from the base 651. The driving rod of the driving part 652 moves along the height direction of the flip platform 62, which can drive the supporting shaft 653 to extend and retract along the height direction of the flip platform 62, and at the same time drive the receiving platform 654 away from or close to the base along the height direction of the flip platform 62.

[0062] The flip mechanism 66 includes two flip parts 661 and two connecting rods 662. Along the length direction of the flip platform 62, the two flip parts 661 are respectively connected to the opposite sides of the base 651. The two flip parts 661 are respectively connected to the fixed plate 655 through two connecting rods 662.

[0063] Each flipping part 661 includes a guide rail 6611, a rotating clamp 6612 and a sliding body 6613. The guide rail 6611 is connected to the fixed plate 655 through a connecting rod 662. The fixed plate 655 is connected to the base 651. It can be understood that the guide rail 6611 is indirectly connected to the base 651. The guide rail 6611 extends along the length direction of the flipping platform 62.

[0064] The sliding body 6613 is connected to the guide rail 6611 and can slide along the guide rail 6611. The rotating jaw 6612 is connected to the sliding body 6613. The rotating jaw 6612 is used to clamp the core to be processed and the pallet. The rotating jaw 6612 can rotate relative to the sliding body 6613 to exchange the positions of the core to be processed and the pallet.

[0065] The working principle of the flipping platform 62 is as follows: the unloading robot 612 transfers the pallet carrying the core to be processed to the receiving platform 654 of the flipping platform 62. At this time, the core to be processed is above the pallet. The sliding bodies 6613 of the two flipping parts 661 move toward the receiving platform 654 along the guide rails 6611, so that the two rotating claws 6612 approach the receiving platform 654. The two rotating claws 6612 clamp the core to be processed and the pallet together. The driving part 652 of the lifting mechanism 65 controls the driving rod to descend, and the driving rod drives the receiving platform 654 to descend, while the multiple support shafts 653 shrink. When a gap is left between the two rotating jaws 6612 and the receiving platform 654 for the core to be processed and the pallet to be turned over safely (i.e., the core to be processed and the pallet will not interfere with the receiving platform 654 when turning over), the two rotating jaws 6612 rotate relative to the sliding body 6613, thereby driving the battery cell and the clamping plate to turn over 180°, so that the pallet is above the core to be processed, thereby exchanging the positions of the pallet and the core to be processed. The driving part 652 of the lifting mechanism 65 continues to control the driving rod to rise, and the driving rod drives the receiving platform 654 to rise, while the multiple support shafts 653 extend. The receiving platform 654 rises to the height of the core to be processed, and the two rotating jaws 6612 release the core to be processed and the pallet. The core to be processed is placed on the multiple receiving columns 6542 of the receiving platform 654. The pallet is located above the core to be processed. The two sliding bodies 6613 move along the guide rails 6611 to move the two rotating clamps 6612 away from the receiving platform 654 .

[0066] See also Figure 4 , Figure 4 for Figure 1 The schematic diagram of the structure of the pallet unloading device of the unloading mechanism of the cutting and stacking equipment shown. The pallet unloading device 63 includes a connecting seat 631, a transfer robot 632 and a transfer robot 633. The transfer robot 632 is used to pick up the pallet from the receiving platform 654, flip the pallet and place it on the pallet transfer platform. The transfer robot 633 is used to transport the pallet from the pallet transfer platform to the conveying platform 70.

[0067] The connecting seat 631 includes a first slide rail, a second slide rail and a third slide rail. The first slide rail extends along the length direction of the pallet unloading device 63. The second slide rail and the third slide rail are spaced apart and are both slidably connected to the first slide rail. The second slide rail and the third slide rail extend along the height direction of the pallet unloading device 63. The transfer robot 632 is slidably connected to the second slide rail. The transfer robot 633 is slidably connected to the third slide rail.

[0068] It can be understood that by connecting the transfer robot 632 and the transfer robot 633 to the connecting seat 631 at the same time, the modularity of the cutting and stacking device 1000 can be improved, which facilitates the overall layout of the cutting and stacking device 1000.

[0069] The conveying platform 70 is used to return the pallet to the loading mechanism 20 so that the pallet can be further transported to the loading platform by the upper pallet robot.

[0070] It should be noted that, in other embodiments, the unloading mechanism 60 may not include the pallet transfer platform and the transfer robot 633 , and the transfer robot 632 directly transfers the pallet from the receiving platform 654 of the flip platform 62 to the conveying platform 70 .

[0071] In this embodiment, the hot pressing mechanism further includes a first glue sticking machine 10, a buffer mechanism 40, and a second glue sticking machine 80. Along the first direction, the first glue sticking machine is located on the side of the feeding mechanism 20 away from the preheating and pressing mechanism 30. The buffer mechanism 40 is located outside the junction of the first side and the second end of the lamination station 200. Along the second direction, the second glue sticking machine 80 is located on one side of the unloading mechanism 60.

[0072] The first glue laminating machine 10 is used to perform front glue laminating on the core to be processed formed by stacking the positive electrode sheet, the negative electrode sheet and the separator on the laminating table 233. The second glue laminating machine 80 is used to perform post glue laminating on the core to be processed after heat pressing. The buffer mechanism 40 is used to temporarily store the core to be processed after preheating and pressing, and the buffer mechanism 40 is also used to temporarily store the core to be processed after heat pressing.

[0073] In this embodiment, the upper cell manipulator is used to transport the processed reel core that has been pre-glued from the first gluing machine 10 to the loading platform. The cell unloading manipulator 613 of the composite device 61 is used to transport the cell from the receiving platform 654 of the flip platform 62 to the second gluing machine 80, so that the processed cell can be post-glued by the second gluing machine 80 to form a cell.

[0074] See also Figure 5 , Figure 5 for Figure 1 A schematic diagram of the structure of the cache mechanism of the cutting and stacking device shown. The cache mechanism 40 includes a first cache platform 41 and a second cache platform 42. The first cache platform 41 is provided with a plurality of first accommodating positions 411. Each first accommodating position 411 is used to accommodate a pallet carrying a core to be processed transferred from the preheating and pressing mechanism 30. The second cache platform 42 has a plurality of second accommodating positions 421. Each second accommodating position 421 is used to accommodate a pallet carrying a core to be processed transferred from the hot pressing mechanism 50. In this embodiment, the number of the first accommodating positions 411 is five. The number of the second accommodating positions 421 is five.

[0075] In this embodiment, the preheating and pressing robot takes out the pallet carrying the core to be processed from the preheating press and transfers it to the first buffer platform 41 of the buffer mechanism 40. The hot pressing robot is used to take out the pallet carrying the core to be processed from the hot press and transfer it to the second buffer platform 42 of the buffer mechanism 40.

[0076] It is understandable that, in the present application, by providing the preheating and pressing mechanism 30, the core to be processed can be preheated and pressed in the preheating and pressing mechanism 30 before being hot-pressed in the hot-pressing mechanism 50, thereby shortening the residence time of the core to be processed in the hot-pressing mechanism 50. The hot press and the preheating and pressing machine can work at the same time. When the hot press performs hot-pressing on the previous batch of cores to be processed, the preheating and pressing machine can also perform preheating and pressing on the next batch of cores to be processed. Therefore, the provision of the preheating and pressing mechanism 30 can speed up the production rhythm of the cutting and stacking device 1000 and improve the production efficiency of the cores to be processed.

[0077] By arranging the loading mechanism 20 and the preheating and pressing mechanism 30 on the outside of any one of the first side and the second side of the stacking station 200, and arranging them in sequence along the extension direction of the first side; the hot pressing mechanism 50 is located on the outside of any one of the first end and the second end of the stacking station 200; the unloading mechanism 60 is located on the side of the hot pressing mechanism 50 away from the stacking station 200; the conveying platform 70 is arranged on the side of the loading mechanism 20 and the preheating and pressing mechanism 30 away from the stacking station 200, the layout of the cutting and stacking equipment 1000 can be made more compact, and the connection between the various processing steps of the core to be processed can be smoother, thereby improving the production rhythm of the cutting and stacking equipment 1000 and improving the production efficiency of the battery cell.

[0078] By setting up the loading mechanism 20, the core to be processed can be always carried on the pallet when it is transferred between the preheating and pressing mechanism 30, the buffer mechanism 40 and the hot pressing mechanism 50. Therefore, the transfer of the core to be processed can be achieved by simply moving the pallet and carrying the core to be processed on the pallet, thereby avoiding the damage to the core to be processed that is easily caused when directly moving the core to be processed. By setting up the unloading mechanism 60 and the conveying platform 70, the pallet and the core to be processed that have been hot-pressed can be separated, and the pallet can be returned to the loading mechanism 20 through the conveying platform 70 and continue to be used to carry the core to be processed, thereby realizing the recycling of the pallet.

[0079] The first cache platform 41 of the cache mechanism 40 can temporarily store the core rolls to be processed and the pallets carrying the battery cells that have been preheated, and the second cache platform 42 can temporarily store the pallets that have been preheated. After the preheating and pressing manipulator takes out the pallet carrying the core rolls to be processed from the preheating press, when the hot press is in working condition, the pallet carrying the core rolls to be processed can be temporarily stored on the first cache platform 41. After the hot press is finished working, the pallet carrying the core rolls to be processed temporarily stored on the first cache platform 41 is sent to the hot press for hot pressing. In addition, when the number of preheating and pressing stations in the preheating press that are in working condition is less than the number of preheating and pressing stations in the hot press that are in working condition, the pallet carrying the core rolls to be processed taken out from the preheating press can also be temporarily stored on the first cache platform 41. After a certain number of core rolls to be processed that have been preheated are accumulated, multiple core rolls to be processed that have been preheated can be transferred to the hot press at the same time for hot pressing. Therefore, by providing the buffer mechanism 40 , the production rhythm of the cutting and laminating device 1000 can be adjusted, thereby speeding up the production rhythm of the cutting and laminating device 1000 .

[0080] Similarly, after the hot pressing robot takes out the pallet carrying the core rolls to be processed from the hot press, when the flipping platform of the unloading mechanism 60 is in an occupied state, the pallet carrying the core rolls to be processed can be temporarily stored on the second cache platform 42. When the flipping platform 62 of the unloading mechanism 60 is in an idle state, the pallet carrying the core rolls to be processed can be transferred from the second cache platform 42 to the flipping platform 62 to avoid the flipping platform 62 being in an abnormally occupied state, thereby avoiding affecting the normal operation of the cutting and stacking equipment 1000.

[0081] In addition, when the core to be processed and the pallet are turned over by the two turning parts 661 of the turning platform 62, the core to be processed is placed on a plurality of receiving columns 6542 arranged at intervals, and the pallet covers the core to be processed, since margins are left at both ends of the pallet in the length direction, the preheating and pressing manipulator, the hot pressing manipulator, and the unloading manipulator 612 can conveniently clamp the pallet. The core to be processed is placed on a plurality of receiving columns arranged at intervals, and the battery cell unloading manipulator 613 can also conveniently clamp the two surfaces of the core to be processed that are arranged opposite to each other in the thickness direction, thereby clamping the core to be processed.

[0082] The present application provides a method for preparing a battery cell, comprising the following steps:

[0083] S1: Use the film making station 300 to prepare positive electrode sheets and negative electrode sheets.

[0084] Wherein, step S1 specifically includes the following steps:

[0085] The electrode sheet unwinding mechanism 330 of the positive electrode sheet making station 310 unwinds the positive electrode roll, the electrode ear die-cutting mechanism 340 die-cuts a plurality of positive electrode ears on the positive electrode roll, and the electrode sheet cutting mechanism 350 cuts a plurality of positive electrode sheets from the positive electrode roll. The electrode sheet inspection mechanism 360 performs size and defect inspection on each electrode sheet. The electrode sheet feeding mechanism 370 transfers the electrode sheet to the positive electrode conveying line 210.

[0086] The electrode sheet unwinding mechanism 330 of the negative electrode sheet making station 320 unwinds the negative electrode roll, the electrode ear die-cutting mechanism 340 die-cuts a plurality of negative electrode ears on the negative electrode roll, and the electrode sheet cutting mechanism 350 cuts a plurality of negative electrode sheets from the negative electrode roll. The electrode sheet inspection mechanism 360 performs size and defect inspection on each electrode sheet. The electrode sheet feeding mechanism 370 transfers the electrode sheet to the negative electrode conveying line 220.

[0087] S2: Use the stacking station 200 to stack the positive electrode sheet, the negative electrode sheet and the separator to form a core to be processed.

[0088] Wherein, step S2 specifically includes the following steps:

[0089] The positive electrode conveying line 210 conveys the positive electrode sheet to one of the stacking mechanisms 230. The positive electrode transporting mechanism removes the positive electrode sheet from the positive electrode conveying line 210 and places it on the positive electrode positioning table 231 of the stacking mechanism 230. The positive electrode positioning table 231 positions the positive electrode sheet so that the position of the positive electrode sheet along the X-axis and Y-axis directions meets the requirements of the stacking process.

[0090] The negative electrode conveying line 220 conveys the negative electrode sheet to one of the stacking mechanisms 230. The negative electrode transporting mechanism removes the negative electrode sheet from the negative electrode conveying line 220 and places it on the negative electrode positioning table 232 of the stacking mechanism 230. The negative electrode positioning table 232 positions the negative electrode sheet so that the position of the negative electrode sheet along the X-axis and Y-axis directions meets the requirements of the stacking process.

[0091] When the positive electrode sheet on the positive electrode positioning table 231 of a stacking mechanism 230 is positioned, and the negative electrode sheet on the negative electrode positioning table 232 is positioned, the diaphragm unwinding mechanism unwinds the diaphragm roll and makes the diaphragm fall on the stacking table 233. The positive electrode conveying mechanism conveys the positive electrode sheet on the positive electrode positioning table 231 to the stacking table 233. The negative electrode conveying mechanism conveys the negative electrode sheet on the negative electrode positioning table 232 to the stacking table 233, and the diaphragm, positive electrode sheet and negative electrode sheet are stacked in a "Z" shape on the stacking table 233 to form a core to be processed. The diaphragm roll cutting jig cuts the diaphragm. The transportation mechanism is used to transport the core to be processed from the stacking table 233 to the first glue laminating machine 10.

[0092] S3: Use the hot pressing station 100 to preheat and hot press the battery cell.

[0093] Wherein, step S3 specifically includes the following steps:

[0094] The first gluing machine 10 performs pre-gluing on the core to be processed.

[0095] The upper pallet manipulator of the loading mechanism 20 places the pallet on the loading platform. The upper cell manipulator places the core to be processed on the pallet so that the core to be processed is carried on the pallet. The upper pallet manipulator can clamp the pallet from the conveying platform 70 or from the outside of the cutting and stacking device 1000.

[0096] The preheating and pressing robot of the preheating and pressing mechanism 30 transports the pallet carrying the core to be processed from the loading platform to the preheating press. The preheating press preheats and presses the core to be processed. The preheating and pressing robot then takes out the pallet carrying the core to be processed from the preheating press, and places the pallet carrying the core to be processed on the first cache platform 41 of the cache mechanism 40. When a certain number of cores to be processed are accumulated on the first cache platform 41, the hot pressing robot of the hot pressing mechanism 50 transports the pallet carrying the core to be processed temporarily stored on the first cache platform 41 to the hot press. The hot press hot-presses the core to be processed. The hot pressing robot then takes out the pallet carrying the core to be processed from the hot press, and places the pallet carrying the core to be processed on the second cache platform 42 of the cache mechanism 40.

[0097] The unloading robot 612 of the composite device 61 transports the pallet carrying the core to be processed from the second buffer platform 42 to the flipping platform 62. The flipping platform 62 flips the pallet and the core to be processed so that the core to be processed is placed on the multiple receiving columns 6542 of the receiving platform 654. The pallet is placed above the core to be processed. The transfer robot 632 of the pallet unloading device 63 of the unloading mechanism 60 transports the pallet to the pallet transfer platform. The transfer robot 633 transports the pallet from the pallet transfer platform to the conveying platform 70. The conveying platform 70 then transports the pallet to the loading mechanism 20 for the upper pallet robot of the loading mechanism 20 to take. The battery cell unloading robot 613 of the composite device 61 transports the core to be processed from the receiving platform 654 to the second gluing machine 80. The second gluing machine 80 performs post-gluing on the core to be processed to form a battery cell.

[0098] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A cutting and stacking device, characterized in that: The integrated cutting and laminating equipment comprises a lamination station and a hot pressing station; The lamination station comprises a first end, a second end, a first side, and a second side, the first end and the second end are arranged opposite to each other, the first side and the second side are both connected between the first end and the second end, and the first side and the second side are arranged opposite to each other; The hot pressing station includes a support plate, a loading mechanism, a preheating and pressing mechanism, a hot pressing mechanism, a unloading mechanism and a conveying platform; The feeding mechanism and the preheating and pressing mechanism are located outside any one of the first side portion and the second side portion, and are sequentially arranged along the extension direction of the first side portion, the feeding mechanism is used to place the core to be processed on the support plate, and the preheating and pressing mechanism is used to transfer the support plate carrying the core to be processed from the feeding mechanism, and preheat and press the core to be processed; The hot pressing mechanism is located outside any one of the first end and the second end, and is used to transfer the pallet carrying the core to be processed out of the pre-heating and pressing mechanism, and hot press the core to be processed; The unloading mechanism is located at a side of the hot pressing mechanism away from the lamination station, and is used to separate the to-be-processed core transferred from the hot pressing mechanism from the pallet; The conveying platform is located on a side of the loading mechanism and the preheating and pressing mechanism away from the lamination station, and the conveying platform is used to convey the pallet transferred from the unloading mechanism to the loading mechanism.

2. The cutting and stacking equipment according to claim 1, characterized in that: The unloading mechanism includes an unloading manipulator and a turning platform; The unloading robot is used to place the pallet carrying the core to be processed transferred from the hot pressing mechanism on the flipping platform, and the flipping platform is used to flip the core to be processed and the pallet so that the pallet is placed on the core to be processed.

3. The cutting and stacking equipment according to claim 2, characterized in that: The flipping platform includes a lifting mechanism and a flipping mechanism, the lifting mechanism includes a base, a driving unit and a receiving platform, the receiving platform is used to support the pallet carrying the roll core to be processed, the driving unit is connected between the base and the receiving platform, and the driving unit can drive the receiving platform to approach or move away from the base along the height direction of the cutting and stacking integrated device; The flipping mechanism includes two flipping parts, and the two flipping parts are respectively connected to the opposite sides of the base along the length direction, each of the flipping parts includes a guide rail, a sliding body and a rotating clamp, the guide rail is connected to the base, the sliding body is connected to the guide rail and can slide along the guide rail, the rotating clamp is connected to the sliding body, the rotating clamp is used to clamp the core to be processed and the pallet, and the rotating clamp can rotate relative to the sliding body to exchange the positions of the core to be processed and the pallet.

4. The cutting and stacking equipment according to claim 3, characterized in that: The unloading mechanism also includes a pallet unloading device and a pallet transfer platform. The pallet unloading device includes a connecting seat, a transfer robot and a transfer robot. The transfer robot and the transfer robot are both slidably connected to the connecting seat. The transfer robot is used to clamp the pallet from the receiving platform, flip the pallet and place the pallet on the pallet transfer platform. The transfer robot is used to transfer the pallet from the pallet transfer platform to the conveying platform.

5. The cutting and stacking equipment according to claim 4, characterized in that: The connecting seat includes a first slide rail, a second slide rail and a third slide rail, the first slide rail extends along the length direction of the pallet unloading device, the second slide rail and the third slide rail are arranged at intervals and are both slidably connected to the first slide rail, the second slide rail and the third slide rail extend along the height direction of the pallet unloading device, the transfer robot is slidably connected to the second slide rail, and the transfer robot is slidably connected to the third slide rail.

6. The cutting and stacking equipment according to claim 2, characterized in that: The loading mechanism includes an upper pallet manipulator, a loading platform and an upper cell manipulator. The upper pallet manipulator is used to place the pallet on the loading platform, and the upper cell manipulator is used to place the core to be processed on the pallet.

7. The cutting and stacking equipment according to claim 1, characterized in that: The hot pressing station also includes a cache mechanism, which includes a first cache platform and a second cache platform. The first cache platform is used to accommodate the pallet carrying the core to be processed that is transferred from the pre-hot pressing mechanism, and the second cache platform is used to accommodate the pallet carrying the core to be processed that is transferred from the hot pressing mechanism.

8. The cutting and stacking device according to any one of claims 1 to 7, characterized in that: The hot pressing mechanism is located on the outside of the second end portion, and the cutting and stacking equipment also includes a film making station, which is located on the outside of the first end portion. The film making station is used to prepare positive and negative electrode sheets, and the stacking station is used to provide a diaphragm, and the diaphragm is sandwiched between the positive electrode sheet and the negative electrode sheet to form a winding core to be processed.

9. The cutting and stacking device according to claim 8, characterized in that: The lamination station comprises a positive electrode sheet conveying line, a negative electrode sheet conveying line and a lamination mechanism, wherein the positive electrode sheet conveying line and the negative electrode sheet conveying line are respectively located on both sides of the lamination mechanism, the positive electrode sheet conveying line is used to convey the positive electrode sheet to the lamination mechanism, and the negative electrode sheet conveying line is used to convey the negative electrode sheet to the lamination mechanism.

10. The cutting and stacking device according to claim 9, characterized in that: The number of the lamination mechanisms is four.

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