A method for disassembling and recycling a power battery pack

Abstract

This invention provides a method for dismantling and recycling power battery packs, characterized by the following steps: Step S1, using a forklift to transfer the power battery pack from the battery pack storage area to the PACK box assembly line station, where it is then lifted onto a transfer vehicle by a lifting device; Step S2, the transfer vehicle transports the PACK box to the PACK box cleaning station; Step S3, the PACK box is transported to the coolant discharge station; Step S4, the power battery pack is then transported to the upper module dismantling equipment, where the coolant plates are dismantled using the coolant plate dismantling equipment; Step S5, the lower module of the power battery pack is dismantled using the lower module dismantling equipment; Step S6, the position information of the module side seam weld and the position information of the battery plate are obtained through the pre-milling photography station; Step S7, the end plates and side plates of the module are dismantled using the dismantling mechanism; Step S8, the insulation of the battery cells is tested using the insulation testing mechanism. This invention enables the dismantling and recycling of battery cells from power battery packs and improves the dismantling and recycling efficiency.

Description

Technical Field

[0001] This invention relates to the field of new energy equipment technology, and in particular to a method for dismantling and recycling power battery packs. Background Technology

[0002] With the rapid development of the new energy industry, the lifespan of early-marketed power battery packs has basically expired. Power battery recycling technology is still in its infancy. Currently, the dismantling and recycling of power battery packs is mainly done manually with handheld tools. The degree of automation in dismantling and recycling is not high, resulting in very low production efficiency and high labor costs. In addition, the safety risk of short circuits in the battery cells during the dismantling process is also relatively high. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a recycling method that can realize the dismantling and recycling of power battery pack cells and improve the dismantling and recycling efficiency.

[0004] This invention employs the following method: a method for dismantling and recycling a power battery pack, the method comprising the following steps:

[0005] Step S1: During disassembly, the power battery packs in the power battery pack hopper are transferred to the PACK box assembly line station by a forklift and then lifted onto the transfer vehicle by a lifting device. The transfer vehicle will collect the upper and lower covers of the power battery packs during the disassembly process.

[0006] Step S2: The transfer vehicle transports the PACK box to the PACK box cleaning station. The AGV tractor then sends the PACK box into the PACK box cleaning station, where a dust collector cleans the power battery pack. After cleaning, the AGV tractor then sends the transfer vehicle out of the cleaning station.

[0007] Step S3: After cleaning, the PACK box is transported to the coolant drain station. The coolant in the power battery pack is drained by the coolant draining equipment. The power battery pack with the coolant drained is placed on a double-layer roller conveyor belt by a hoist for transportation. When it is transported to the wiring harness disassembly station, the wiring harness and electronic components on the power battery pack are removed.

[0008] Step S4: Then, the power battery pack is transported to the upper module removal equipment. The upper module and the power battery pack are separated by vibration, the upper module is removed, and the water-cooled plate is removed by the water-cooled plate removal equipment.

[0009] Step S5: After the upper module is removed, it is then conveyed to the lower module removal station via a double-layer roller conveyor belt for removal. After removal, the module is hoisted onto the module pallet via a turnover module pallet. Step S6: The position information of the side seam weld and the position information of the battery pack are obtained through the pre-milling photography station. The module pallet is placed on the return conveyor line, and then the module is fixed through the pre-milling aluminum bar fixing station. The robot picks up the module pallet and sends it to the CNC milling station for milling.

[0010] Step S7: After cleaning the milling residue, the end plate and side plate of the module are removed by the dismantling mechanism. After dismantling, the cells are separated by wire cutting by the cell separation mechanism, and then the cells are sent into the discharge chamber for discharge treatment. Step S8: After the cells are discharged, the insulation test of the cells is carried out by the insulation test mechanism, thereby realizing the dismantling and recycling of the power battery pack.

[0011] Furthermore, the water coolant discharge device in step S3 includes a main frame and a coolant collection tank. The coolant collection tank is located on the side of the main frame. Material sensing sensors are installed on the crossbeams at both ends of the main frame. A blocking frame is installed at the front end of the main frame. Guide plates and positioning cylinders are installed on the inner sides of the crossbeams at both ends of the main frame. A turnover trolley is installed on the main frame. Lifting cylinders for lifting the rear of the turnover trolley are installed at the rear end of the lower surface of the crossbeams at both ends of the main frame.

[0012] Furthermore, the upper module removal equipment in step S4 includes a removal platform, on which a first clamping device is provided for clamping the power battery pack on the tray. A support frame is provided in front of the removal platform, and a first vibrator is provided at both the left and right ends of the support frame. A first hook for hooking the upper module of the power battery pack is provided at both the left and right ends of the support frame, and the first vibrator is located above the first hook. The water-cooled plate dismantling equipment in step S4 includes a lower frame, on which support columns are provided around the lower frame. An upper frame is mounted on the support columns. A second clamping device for clamping the water-cooled plate of the power battery pack is provided around the upper surface of the lower frame. A second vibrator is provided on the upper frame, and a second hook for hooking the water-cooled plate of the power battery pack is provided on the lower surface of the second vibrator.

[0013] Furthermore, the lower module disassembly equipment in step S5 includes a lower frame, with support columns arranged around the lower frame, and an upper frame mounted on the support columns. The lower frame has a third clamping device for holding the power battery pack around its upper surface, and a third vibrator is mounted on the upper frame. The lower vibrator has a third hook for hooking the power battery pack on its lower surface.

[0014] Furthermore, the milling equipment in step S6 includes a module conveyor line, a return conveyor line, and a robot walking mechanism. The return conveyor line, module conveyor line, and robot walking mechanism are arranged sequentially from front to back. An aluminum bar fixing fixture is provided on the return conveyor line. The return conveyor line is used for the return of the aluminum bar positioning fixture. The module conveyor line is used to transport the module tray. A robot is provided on the conveyor belt. Multiple CNC machining centers for milling the power battery pack are arranged at equal intervals behind the conveyor belt. The end of the robot's robotic arm is provided with a module gripper for clamping the module tray to the machining center. Multiple module traversing mechanisms for moving the module tray on the module conveyor line are provided.

[0015] Furthermore, the dismantling mechanism in step S7 includes a linear guide rail, a clamping caliper, an electric cylinder, and a fourth hook. The linear guide rail is equipped with a clamping caliper, and the electric cylinder is equipped with a fourth hook for hooking the module end plate. The wire core separation mechanism in step S7 includes a support base, on which a fixed base and a wire cutting mechanism are provided. The fixed base and the wire cutting mechanism are arranged side by side. The fixed base is equipped with a wire cutting platform that cooperates with the wire cutting mechanism. The wire cutting platform is equipped with a module clamp for clamping the power battery pack. A moving part is provided between the fixed base and the wire cutting platform.

[0016] Furthermore, the insulation testing mechanism in step S8 includes a main frame and an electrical testing mechanism. The main frame is equipped with a lifting mechanism, a guiding mechanism, and a fire-fighting mechanism. The lifting mechanism includes a material frame primary positioning and a material frame fine positioning. The electrical testing mechanism includes a gear and rack mechanism and a probe assembly. The gear and rack mechanism is adjusted using a handwheel. The fire-fighting mechanism includes a smoke alarm and a fire extinguishing mechanism.

[0017] The beneficial effects of this invention are as follows: This invention can efficiently complete the disassembly process of power battery pack-module-cell, and the production line and method are suitable for disassembling most power battery packs on the market, with strong compatibility, very high production efficiency, low personnel input, and good safety protection; by developing new disassembly equipment, the automation level of the disassembly and recycling production line is improved, the efficiency of disassembly and recycling is improved, and reliable safety protection measures are provided. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the method flow of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the water cooling liquid discharge device.

[0021] Figure 4 This is a structural schematic diagram of the upper module removal equipment.

[0022] Figure 5 This is a structural schematic diagram of the water-cooled plate disassembly equipment.

[0023] Figure 6 This is a schematic diagram of the pre-milling aluminum bar fixing device.

[0024] Figure 7 This is a schematic diagram of the working process of the lateral movement mechanism.

[0025] Figure 8 This is a structural schematic diagram of the contouring tooling.

[0026] Figure 9 This is a schematic diagram of the dismantling mechanism.

[0027] Figure 10 This is a schematic diagram of the core separation mechanism.

[0028] Figure 11 This is a schematic diagram of the insulation testing mechanism. Detailed Implementation

[0029] The invention will now be further described with reference to the accompanying drawings.

[0030] Please see Figure 1 and Figure 2 As shown, the present invention provides a method for dismantling and recycling a power battery pack, the method comprising the following steps:

[0031] Step S1: During disassembly, the power battery pack in the power battery pack hopper 1 is transferred to the PACK box assembly station by a forklift, and then lifted onto the transfer vehicle 3 by the lifting device 2. The upper and lower box covers of the power battery pack are then recycled to the upper and lower box recycling station 4 by the transfer vehicle 3.

[0032] Step S2: The transfer vehicle 3 transports the PACK box to the PACK box cleaning station. The AGV tractor pulls the PACK box into the PACK box cleaning station. The dust collector 5 cleans the power battery pack by vacuuming. After cleaning, the AGV tractor pulls the transfer vehicle 3 out of the PACK box cleaning station.

[0033] Step S3: After cleaning, the PACK box is transported to the coolant discharge station 6 by the transfer vehicle 3. The coolant in the power battery pack is discharged by the coolant discharge equipment. The power battery pack with the coolant discharged is then hoisted onto the double-layer roller conveyor 8 by the hoist 7 for transportation. When it is transported to the wiring harness disassembly station 9, the wiring harness and electronic components on the power battery pack are removed.

[0034] Step S4: Then, the power battery pack is transported to the upper module removal equipment 10. The upper module and the power battery pack are separated by vibration, and the upper module is removed. After the upper module is removed, the upper module device module tray 14 is hoisted by the lifting device 11 and manually transferred to the water-cooled plate dismantling station 12 for dismantling of the module water-cooled plate.

[0035] Step S5: After the upper module is hoisted by the lifting device, it is transported to the lower module disassembly station 13 via the double-layer roller conveyor 8 for disassembly of the lower module. After disassembly, it is transported to the lifting device 15 via the double-layer roller conveyor 8. The lower module is hoisted to the module pallet 14 via the lifting device 15. After the lower module is hoisted, the lower shell is hoisted to the transfer vehicle 3 via the lifting device 15. The transfer vehicle 3 is then manually pushed to the upper and lower box recycling station 4 for box recycling.

[0036] Step S6: The module pallet 14 is manually transferred to the module loading station 16. The module is then hoisted onto the module pallet using a lifting device to complete the module loading. The module is then sent to the pre-milling photographing station 17 via the module transport line 19 to obtain the position information of the module side seam weld and the position information of the bar piece. After taking the photograph, the module is transported to the pre-milling aluminum bar fixing station 18 via the module transport line 19 for module aluminum bar fixing. Then, the module pallet is transported to the module pallet traversing mechanism 20 via the module transport line 19 to wait for the robot module gripper 21 to grab it. The robot module gripper 21 grabs the module pallet on the module pallet traversing mechanism 20 and sends it to the CNC machining center for milling of the module side seam weld position and the bar piece position.

[0037] Step S7: After milling, the module tray enters the milling residue cleaning station 24 for cleaning. The aluminum bar fixing fixture is returned through the return line 23. The module is lifted by the lifting device 25 to the dismantling mechanism 26 to remove the end plate and side plate of the module. After dismantling, the module is lifted by the lifting device 25 to the module turnover trolley 28 and then manually transferred to the cell separation mechanism 27. The cell separation mechanism 27 separates the cells of the power battery pack by wire cutting. Then the cells are placed in the cell tray 29 and then manually sent into the discharge chamber for discharge treatment.

[0038] Step S8: After the battery cell is discharged, the insulation test of the battery cell is carried out through the insulation test mechanism 31, thereby realizing the disassembly and recycling of the power battery pack.

[0039] Please see Figure 3As shown, in one embodiment of the present invention, the water cooling liquid discharge device 6 in step S3 includes a main frame 604 and a coolant collection tank 601. The coolant collection tank 601 is disposed on the side of the main frame 604. Material sensing sensors 602 are disposed on the crossbars at both ends of the main frame 604. A blocking frame 607 is disposed at the front end of the main frame 604. Guide plates 605 are disposed on the inner side of the crossbars at both ends of the main frame 601. A turnover trolley 606 is disposed on the main frame 604. A front wheel positioning cylinder 608 is disposed at the front end of the lower surface of the crossbars at both ends of the main frame 604. A lifting cylinder 609 is disposed at the rear end of the lower surface of the crossbars at both ends of the main frame 604 for lifting the rear of the turnover trolley 606. The manual pusher pushes the turnover trolley 606 to the coolant discharge station, where it contacts the blocking frame 607. The material sensing sensor 602 activates the front wheel positioning cylinder 608 to position the front wheels of the turnover trolley 606. The lifting cylinder 609 lifts the rear of the turnover trolley 606, causing the power battery pack to tilt. The manual connects the power battery pack coolant inlet and outlet to the coolant collection tank 601, and then discharges the coolant for coolant recovery.

[0040] Please see Figure 4 As shown, in one embodiment of the present invention, the upper module removal device 10 in step S4 includes a double-layer roller conveyor 1006. The double-layer roller conveyor 1006 is provided with a tray 1004 for placing the power battery pack. The double-layer roller conveyor 1006 is provided with a first clamping device 1005 for clamping the power battery pack on the tray 1004. A support frame 1001 is provided in front of the double-layer roller conveyor 1006. A first vibrator 1002 is provided at both the left and right ends of the support frame 1001. A first hook 1003 for hooking the upper module of the power battery pack is provided at both the left and right ends of the support frame 1001, and the first vibrator 1002 is provided above the first hook 1003. When the tray 1004 carrying the power battery pack arrives at the upper module removal equipment 10, the first clamping device 1005 clamps the power battery pack, and then the first hook 1003 is manually fastened to the end plates on both sides of the module. Then the first vibrator 1002 is started to separate the upper module and the power battery pack through vibration, thus achieving the purpose of disassembly.

[0041] Please see Figure 5As shown, in one embodiment of the present invention, the water-cooled plate disassembly device 12 in step S5 includes a lower frame 1203. Support columns 1205 are provided around the lower frame 1203, and an upper frame 1206 is mounted on the support columns 1205. Second clamping devices 1201 for holding the water-cooled plate of the power battery pack are provided around the upper surface of the lower frame 1203. A second vibrator 1201 is provided on the upper frame 1206, and a second hook 1204 for hooking the water-cooled plate of the power battery pack is provided on the lower surface of the second vibrator 1201. The power battery pack is placed on the lower frame 1203, the water-cooled plate is held by the second clamping devices 1201, and the second hooks 1204 are used to secure the end plates on both sides of the module. Then, the second vibrator 1202 is activated to separate the water-cooled plate and the module through vibration, achieving the disassembly purpose. The module is then manually placed into the module tray 1801.

[0042] Please see Figure 6As shown, in one embodiment of the present invention, the pre-milling aluminum bar fixing station 18 in step S6 includes a module conveying line 19 and a return conveying line 23. The return conveying line 23 is provided with aluminum bar fixing fixtures 231 at equal intervals. The module conveying line 19 is used to convey the module tray 18. A robot 21 is provided on the robot walking mechanism 211. A plurality of machining centers 22 for milling the power battery pack are provided behind the robot walking mechanism 211. The end of the robotic arm of the robot 21 is provided with a module gripper 212 for clamping the module tray 18 to the machining center 22. The machining center 22 is provided with a transverse movement mechanism 20, and the transverse movement mechanism 20 is located outside the robot walking mechanism 211. The module pallet is conveyed to the pre-milling aluminum bar fixing station 18. A worker installs the aluminum bar fixing fixture 231 from the return conveyor line 23 onto the module, then presses the release button. The module pallet is then conveyed via the module conveyor line 19 to the module traversing mechanism 20. The robot 21 moves to the module traversing mechanism 20 via the robot walking mechanism 211, and then uses the module gripper 212 to pick up the module and place it into the milling fixture (with a battery cell short-circuit protection battery) of the machining center 22. The machining center 22 begins milling the bar, separating the bar or CCS from the battery cell terminal, and then mills the welds on the side plates and end plates (two cuts at the diagonal weld positions) to prepare for subsequent end plate separation. After milling, the robot 21 moves to the machining center to pick up the milled module and transport it to the module traversing mechanism 20. The module pallet moves to the manual station via the module conveyor line 19. The manual worker removes and cleans the aluminum bar fixing fixture 231, placing it on the return conveyor line 23 for fixture return. The module pallet then flows to the post-milling cleaning station 24 to clean the milling residue from the module surface. After cleaning, it flows to the next station. The lateral movement mechanism's workflow is as follows: When the proximity switch 2001 on the lateral movement mechanism 20 senses the arrival of the module pallet, the lifting cylinder 2002 and guide shaft 2003 lift the module pallet on the conveyor line. After the module pallet is lifted into position, the motor 2004 drives the chain 2005 and drive shaft 2006 to rotate, thereby driving the two side transmission chains 2007 to laterally move the module pallet. To prevent the module pallet from deviating during lateral movement, guide blocks 2008 on both sides guide the module pallet (e.g., ...). Figure 7 ), contouring fixtures (such as Figure 8 ).

[0043] Please see Figure 9As shown, in one embodiment of the present invention, the end-side plate removal mechanism 26 in step S7 includes a workbench 2606. A slide rail 2604 is provided on the workbench 2607, and quick clamps 2602 and 2606 are provided on the slide rail 2604. Electric cylinders 2601 and 2606 are provided on the workbench 2607, and a fourth hook 2603 is provided on the electric cylinders 2601 and 2606. When a module is manually hoisted into the end-side plate removal mechanism 26 using a KBK lifting device, it passes through the quick clamps at the long side position. Clamp 2602 clamps the module, and then the operator connects and secures the fourth hook 2603 on the electric cylinder 2606 at the short side position to the upper end plate of the module. Press the start button to begin separating the end plate from the module. After separation, move the quick clamp 2602 at the long side position out of the working position and move the quick clamp 2605 at the short side position into the working position. Use the same method to separate the side plate from the module, completing the disassembly of the end plate and side plate. The disassembled module is then hoisted onto a transfer pallet and moved to the next work station.

[0044] Please see Figure 10 As shown, in one embodiment of the present invention, the wire core separation mechanism 27 in step S7 includes a support base 2701. A fixed base 2702 and a wire cutting mechanism 2703 are mounted on the support base 2701. A wire cutting platform cooperating with the wire cutting mechanism 2703 is mounted on the fixed base 2702. A module clamp 2705 for manually clamping the module is mounted on the wire cutting platform. A movable component 2704 is positioned between the fixed base 2702 and the wire cutting platform. The module is transported to the wire cutting platform by a trolley, and the module to be wire cut is fixed by the module clamp 2705. Then, the equipment is started, and the wire cutting mechanism 2703 and the movable component 2704 cooperate to separate the battery cells by wire cutting. After wire cutting is completed, the battery cells are manually stacked on a battery cell tray and moved to the next workstation.

[0045] The module fixture in this invention can be a wire feeding crank, and the moving part is an XY worktable, but it is not limited to these.

[0046] Please see Figure 11As shown, in one embodiment of the present invention, the insulation testing machine 31 in step S8 includes a base 3101, a lower support frame 3112, and an upper support frame 3121. A forklift is used manually to guide the battery cell tray via a battery cell tray guide mechanism 3104 and place it on the support block 3103. Then, a cylinder lifts the tray positioning pin 3102 to perform a primary positioning of the battery cell tray. After positioning, a cylinder 3116 lifts and moves the connecting rod 3115 and the movable joint 3114, raising the lower support frame 3112. The lower support frame 3112 is equipped with a guide mechanism 3118 that plays a lifting role during the lifting process. A limit mechanism 3113 is provided on the lower support frame 3112 to ensure that the battery cells do not collide with the probes during the lifting process. A secondary positioning pin 3109 for the battery cell tray is also provided on the lower support frame 3112. When the lower support frame 3112 is lifted, it is positioned with the cell tray and contacts the probe 3108 on the upper support frame 3121 to perform cell insulation testing. The upper support frame 3121 is equipped with a cell tray limiting block 3117 for secondary anti-collision protection. The lower support frame 3112 is equipped with a through-beam sensor 3111 to detect materials. By manually adjusting the handwheel 3106 on the upper support frame 3121, the gear 3105 and rack 3107 are driven to move, thereby moving the probe fixing block 3110 and recording the scale on the rack 3107. This allows the insulation testing machine 31 to achieve compatibility, save the time required for model changeover, and increase production capacity. The upper support frame 3121 is equipped with a smoke sensor 3120, which can quickly detect when a fire occurs during cell insulation testing and control the fire-fighting mechanism 3119 to extinguish the fire, ensuring production safety.

[0047] The material sensing sensor (Omron E3Z-T81A), vibrator (impact ram Ruijia Xuefeng 125 electric model (380V)), dust collector (Huile explosion-proof dust collector), smoke sensor (HEIMAN 626), mold clamp (TY-10), robot (KUKA KR210-2700), machining center (VFP-32A), and electric cylinder (Scheller E80-200-25-10-PJ-M1000W-A-S1) in this invention are all existing technologies, which are already clearly understood by those skilled in the art, and will not be described in detail here.

[0048] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be included in the scope of the present invention.

Claims

1. A method for dismantling and recycling a power battery pack, characterized in that, The method includes the following steps: Step S1: During disassembly, the power battery packs in the power battery pack hopper are transferred to the PACK box assembly line station by a forklift and then lifted onto the transfer vehicle by a lifting device. The transfer vehicle will collect the upper and lower covers of the power battery packs during the disassembly process. Step S2: The transfer vehicle transports the PACK box to the PACK box cleaning station. The AGV tractor then sends the PACK box into the PACK box cleaning station. The dust removal mechanism cleans the power battery pack. After cleaning, the AGV tractor sends the transfer vehicle out of the cleaning station. Step S3: After cleaning, the PACK box is transported to the coolant drain station. The coolant in the power battery pack is drained by the coolant draining equipment. The power battery pack with the coolant drained is placed on a double-layer roller conveyor belt by a hoist for transportation. When it is transported to the wiring harness disassembly station, the wiring harness and electronic components on the power battery pack are removed. Step S4: Then, the power battery pack is transported to the upper module removal equipment. The upper module and the power battery pack are separated by vibration, the upper module is removed, and the water-cooled plate is removed by the water-cooled plate removal equipment. Step S5: After the upper module is removed, it is then conveyed to the lower module removal station via a double-layer roller conveyor belt for removal. After removal, the module is hoisted onto the module pallet at the hoisting station via a turnover module pallet. Step S6: Obtain the position information of the side seam weld and the position information of the battery pack through the pre-milling photo station, place the module tray on the return conveyor line, fix the module through the pre-milling aluminum fixing station, and use the robot to grab the module tray to the CNC milling station for milling. Step S7: After cleaning the milling residue, the end plate and side plate of the module are removed by the removal mechanism. After removal, the battery cells are separated by wire cutting by the battery cell separation mechanism, and then the battery cells are sent into the discharge chamber for discharge treatment. Step S8: After the battery cell is discharged, the insulation of the battery cell is tested by an insulation testing mechanism, thereby realizing the disassembly and recycling of the power battery pack.

2. The method for dismantling and recycling a power battery pack according to claim 1, characterized in that: The water cooling liquid discharge device in step S3 includes a main frame and a coolant collection tank. The coolant collection tank is located on the side of the main frame. Material sensing sensors are installed on the crossbeams at both ends of the main frame. A blocking frame is installed at the front end of the main frame. Guide plates and positioning cylinders are installed on the inner sides of the crossbeams at both ends of the main frame. A turnover trolley is installed on the main frame. Lifting cylinders for lifting the rear of the turnover trolley are installed at the rear end of the lower surface of the crossbeams at both ends of the main frame.

3. The method for dismantling and recycling a power battery pack according to claim 1, characterized in that: The upper module removal equipment in step S4 includes a removal platform, on which a first clamping device is provided for clamping the power battery pack on the tray. A support frame is provided in front of the removal platform, and a first vibrator is provided at both the left and right ends of the support frame. A first hook is provided at both the left and right ends of the support frame for hooking the upper module of the power battery pack, and the first vibrator is located above the first hook. The water-cooled plate dismantling equipment in step S4 includes a lower frame, on which support columns are provided around the lower frame. An upper frame is mounted on the support columns. A second clamping device for clamping the water-cooled plate of the power battery pack is provided around the upper surface of the lower frame. A second vibrator is provided on the upper frame, and a second hook for hooking the water-cooled plate of the power battery pack is provided on the lower surface of the second vibrator.

4. The method for dismantling and recycling a power battery pack according to claim 1, characterized in that: The lower module disassembly equipment in step S5 includes a lower frame, with support columns on all four sides of the lower frame, and an upper frame mounted on the support columns. The upper surface of the lower frame is provided with third clamping devices for holding the power battery pack on all four sides. The upper frame is provided with a third vibrator, and the lower surface of the third vibrator is provided with a third hook for hooking the power battery pack.

5. The method for dismantling and recycling a power battery pack according to claim 1, characterized in that: The milling equipment in step S6 includes a module conveyor line, a return conveyor line, and a robot walking mechanism. The return conveyor line, module conveyor line, and robot walking mechanism are arranged sequentially from front to back. An aluminum bar fixing fixture is provided on the return conveyor line. The return conveyor line is used for the return of the aluminum bar positioning fixture. The module conveyor line is used to transport the module tray. A robot is provided on the conveyor belt. Multiple CNC machining centers for milling the power battery pack are arranged at equal intervals behind the conveyor belt. The end of the robot's robotic arm is provided with a module gripper for clamping the module tray to the machining center. Multiple module traversing mechanisms for moving the module tray on the module conveyor line are provided.

6. The method for dismantling and recycling a power battery pack according to claim 1, characterized in that: The dismantling mechanism in step S7 includes a linear guide rail, a clamping caliper, an electric cylinder, and a fourth hook. The linear guide rail is equipped with a clamping caliper, and the electric cylinder is equipped with a fourth hook for hooking the module end plate. The wire core separation mechanism in step S7 includes a support base, on which a fixed base and a wire cutting mechanism are provided. The fixed base and the wire cutting mechanism are arranged side by side. The fixed base is equipped with a wire cutting platform that cooperates with the wire cutting mechanism. The wire cutting platform is equipped with a module clamp for clamping the power battery pack. A moving part is provided between the fixed base and the wire cutting platform.

7. The method for dismantling and recycling a power battery pack according to claim 1, characterized in that: The insulation testing mechanism in step S8 includes a main frame and an electrical testing mechanism. The main frame is equipped with a lifting mechanism, a guiding mechanism, and a fire-fighting mechanism. The lifting mechanism includes a material frame primary positioning and a material frame fine positioning. The electrical testing mechanism includes a gear and rack mechanism and a probe assembly. The gear and rack mechanism is adjusted using a handwheel. The fire-fighting mechanism includes a smoke alarm and a fire extinguishing mechanism.

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