Automatic processing equipment for hot press molding of lithium battery

Abstract

Automatic processing equipment for hot press molding of lithium batteries comprises a rack, a conveying device is arranged on the rack, a feeding device is arranged at the feeding end of the conveying device, a discharging device is arranged at the discharging end of the conveying device, and N hot press devices which are sequentially arranged in the conveying direction of the conveying device are arranged between the feeding device and the discharging device. A transfer device is arranged on one side of the conveying device; through cooperation of the conveying device, the feeding device, the hot-pressing device, the discharging device and the transferring device, a continuous and full-automatic hot-pressing machining system is constructed, the limitation that a single block is machined in a small amount at a time and feeding and discharging are disjointed with hot-pressing machining of traditional hot-pressing equipment is thoroughly broken through, parallel operation of hot-pressing machining, feeding, discharging and transferring is achieved, and the production efficiency is improved. The equipment pause waiting time is thoroughly shortened, the machining efficiency is greatly improved, and the equipment utilization rate is increased.

Description

Technical Field

[0001] This invention belongs to the technical field of lithium battery processing equipment, specifically relating to an automatic processing equipment for hot pressing and forming of lithium batteries. Background Technology

[0002] In the lithium battery manufacturing process, after winding or stacking, the stacked cells need to be sent to a hot press for pressurization and heating to form a complete cell. In this process, the cells need to be sent to the hot press for hot pressing treatment to achieve the purpose of cell shaping, shortening the lithium ion diffusion distance, eliminating separator wrinkles, maintaining uniform cell thickness, and removing air from the cell. After processing, the cells need to be taken out again and placed in the next process.

[0003] Existing lithium battery hot pressing equipment, as shown in Chinese patent application number 202210822035.8, discloses a lithium battery stacking hot and cold pressing device. This device includes a main body with a counter and a storage mechanism and a unloading rack mounted on the counter. Several hot and cold pressing mechanisms are continuously arranged on one side of the storage mechanism. A loading mechanism and an unloading mechanism are arranged facing the placement of the hot and cold pressing mechanisms. The loading and unloading mechanisms are positioned along the path of the hot and cold pressing mechanisms and move back and forth along this path. A gripping device is located between the storage mechanism and the unloading rack. The loading mechanism places unprocessed workpieces from the storage mechanism into the infeed end, and the unloading mechanism removes processed workpieces from the outlet end and places them in the storage mechanism. The gripping device transfers the processed workpieces from the storage mechanism to the unloading rack. This hot and cold pressing device uses a single-station design, allowing only one lithium battery to be hot and cold pressed at a time. The processing mode is singular and fixed, making it impossible to achieve simultaneous processing of multiple cells. Meanwhile, the loading and unloading operations of this type of equipment adopt a simple mechanical single-piece operation mode, that is, only one lithium battery can be loaded at a time. Only after the lithium battery has completed all the hot and cold pressing forming processes can the unloading operation be carried out, and then the next lithium battery can be loaded. In actual processing, the hot pressing time of the battery cell is often long, while the loading and unloading time is often short. As a result, after the equipment completes one loading, the battery cell has to wait for a long time in the hot pressing process. During this period, the loading and unloading mechanism is idle and waiting, and cannot carry out synchronous operation. The overall utilization rate of the equipment is extremely low, which seriously restricts the mass production efficiency of lithium batteries. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides an automatic processing equipment for hot pressing and molding of lithium batteries.

[0005] The technical solution adopted by this invention to solve its technical problem is: An automated hot-pressing forming equipment for lithium batteries includes a frame with a conveying device on it. The conveying device has a feeding end with a loading device and a discharging end with a unloading device. N hot-pressing devices are arranged sequentially along the conveying direction of the conveying device between the loading and unloading devices. A transfer device is located on one side of the conveying device. The transfer device includes a transfer box frame, a moving guide rail, a moving frame, a moving drive mechanism, and a suction mechanism. The moving guide rail is mounted on the transfer box frame and extends parallel to the conveying direction of the conveying device. The moving frame is slidably connected to the moving guide rail. The moving drive mechanism is connected to the moving frame and drives the moving frame to slide along the moving guide rail. N+1 suction mechanisms are arranged sequentially along the moving direction of the moving frame. The loading device includes a loading mounting device. The system comprises a frame, a lifting and feeding mechanism, a mobile feeding mechanism, and a fixed feeding mechanism. The feeding frame is fixedly mounted on the frame. The lifting and feeding mechanism is mounted on the frame and is used to lift the lithium batteries fed in by the conveying device and send them to the mobile feeding mechanism. The mobile feeding mechanism is installed inside the feeding frame and is used to transfer the lithium batteries lifted by the lifting and feeding mechanism to the fixed feeding mechanism. The fixed feeding mechanism is installed inside the feeding frame and is used to place the lithium batteries transferred by the mobile feeding mechanism. The fixed feeding mechanism has multiple feeding positions for placing lithium batteries from bottom to top. Each suction mechanism has multiple picking areas from bottom to top. Each hot pressing device has multiple hot pressing processing areas from bottom to top. The number of feeding positions of the fixed feeding mechanism, the picking areas of the suction mechanism, and the hot pressing processing areas of the hot pressing device are equal. The structure of the feeding device is the same as the structure of the unloading device.

[0006] In this invention, the feeding time of the feeding device, the hot pressing forming processing time of the hot pressing device, and the unloading time of the unloading device are the same.

[0007] In this invention, the lifting and feeding mechanism includes a lifting mounting plate, a lifting cylinder, and a lifting plate. The lifting mounting plate is fixedly mounted on the frame, the lifting cylinder is mounted on the lifting mounting plate, the lifting rod of the lifting cylinder extends upward through the lifting mounting plate, the lifting plate is mounted on the top of the lifting rod, and a guide column is connected to the bottom of the lifting plate. The guide column extends downward through the lifting mounting plate.

[0008] In this invention, the mobile feeding mechanism includes two sets of opposing mobile feeding modules. Each mobile feeding module includes a mobile feeding mounting plate fixedly installed within a feeding mounting frame. The mobile feeding mounting plate has two parallel mobile feeding slide rails extending vertically. A mobile feeding slider is slidably connected to each slide rail. The mobile feeding slider is connected to a mobile feeding connecting plate. The mobile feeding mounting plate also has a mobile feeding telescopic cylinder. The telescopic end of the telescopic cylinder is connected to the mobile feeding connecting plate and is used to push the mobile feeding connecting plate to move up and down. Both sides of the mobile feeding connecting plate have mobile guide rod telescopic cylinders. Each mobile guide rod telescopic cylinder is connected to a mobile feeding bracket. The mobile feeding bracket has M support positions arranged sequentially from bottom to top. The mobile guide rod telescopic cylinders control the mobile feeding bracket to move along the opposite direction of the two sets of mobile feeding modules. The mobile feeding telescopic cylinders drive the mobile guide rod telescopic cylinders on both sides, along with the mobile feeding bracket, to move up and down by pushing the mobile feeding connecting plate to move up and down.

[0009] In this invention, when the mobile feeding telescopic cylinder drives the mobile feeding bracket to move downward to the downward position, and the lifting cylinder drives the lifting plate to rise upward, the lowest support position of the mobile feeding bracket, the upper surface of the lifting plate, and the lowest feeding position are aligned.

[0010] In this invention, the fixed feeding mechanism includes two sets of fixed feeding modules arranged opposite to each other. Each fixed feeding module includes a fixed guide rod telescopic cylinder fixedly installed in the feeding mounting frame. The fixed guide rod telescopic cylinders are distributed on both sides of the moving feeding module. The fixed guide rod telescopic cylinders are provided with fixed feeding brackets. The fixed feeding brackets are provided with material support positions. Material support positions at the same height position together form a feeding position. The feeding device has M+1 feeding positions from bottom to top. The support positions and feeding positions are staggered in the vertical direction.

[0011] In this invention, the feeding device performs the feeding operation as follows: Step 1: The fixed guide rod telescopic cylinder drives the fixed feeding bracket to retract, and the moving guide rod telescopic cylinder drives the moving feeding bracket to retract. The moving feeding telescopic cylinder also pushes the moving feeding connecting plate downward to the downward position. The lifting plate is in the descending state, and the conveying device transports the lithium battery into the feeding device. The lithium battery is located directly above the lifting plate. Step 2: The lifting cylinder drives the lifting plate to rise, and the lifting plate lifts the lithium battery to the height corresponding to the lowest loading position. Step 3: The telescopic cylinder of the moving guide rod drives the moving feeding bracket to extend, and the lowest support position receives the lithium battery. The telescopic cylinder of the moving feeding rod drives the moving feeding bracket and the lithium battery to move upward to the upward position. At the same time, the lifting cylinder drives the lifting plate to descend. Step 4: The conveying device delivers the next lithium battery to the loading device. The lifting cylinder drives the lifting plate to rise, and the lifting plate lifts the lithium battery to the height corresponding to the lowest loading position. Step 5: The fixed guide rod telescopic cylinder drives the fixed feeding bracket to extend and receive both lithium batteries. Then, the moving guide rod telescopic cylinder drives the moving feeding bracket to retract and detach from the lithium batteries. The moving feeding telescopic cylinder drives the moving feeding bracket to move downward to the lower position. At the same time, the lifting cylinder drives the lifting plate to descend. Step 6: The moving guide rod telescopic cylinder drives the moving feeding bracket to extend and receive the two lithium batteries. The fixed guide rod telescopic cylinder then drives the fixed feeding bracket to retract and detach from the lithium batteries. The moving feeding telescopic cylinder then drives the moving feeding bracket and the two lithium batteries to move upward to the upper position. Step 7: The conveying device delivers the next lithium battery to the loading device. The lifting cylinder drives the lifting plate to rise, and the lifting plate lifts the lithium battery to the height corresponding to the lowest loading position. Step 8: The fixed guide rod telescopic cylinder drives the fixed feeding bracket to extend and receive all three lithium batteries. Then, the moving guide rod telescopic cylinder drives the moving feeding bracket to retract and detach from the lithium batteries. The moving feeding telescopic cylinder drives the moving feeding bracket to move downward to the lower position. At the same time, the lifting cylinder drives the lifting plate to descend. Step 9: The moving guide rod telescopic cylinder drives the moving feeding bracket to extend and receive the three lithium batteries. The fixed guide rod telescopic cylinder then drives the fixed feeding bracket to retract and detach from the lithium batteries. The moving feeding telescopic cylinder then drives the moving feeding bracket and the three lithium batteries to move upward to the upper position. Step 10: The conveying device delivers the next lithium battery to the loading device. The lifting cylinder drives the lifting plate to rise, and the lifting plate lifts the lithium battery to the height corresponding to the lowest loading position. Step 11: The fixed guide rod telescopic cylinder drives the fixed feeding bracket to extend and receive all four lithium batteries. Then, the moving guide rod telescopic cylinder drives the moving feeding bracket to retract and detach from the lithium batteries. At the same time, the lifting cylinder drives the lifting plate to descend, thus completing the lithium battery feeding work at the four feeding positions in the feeding device.

[0012] In this invention, the unloading device includes an unloading mounting frame, a lifting unloading mechanism, a moving unloading mechanism, and a fixed unloading mechanism. The fixed unloading mechanism is installed inside the unloading mounting frame and is used to place the lithium batteries fed in by the suction mechanism. The fixed unloading mechanism has multiple unloading positions for placing lithium batteries from bottom to top. The moving unloading mechanism is installed inside the unloading mounting frame and is used to transfer the lithium batteries on the fixed unloading mechanism to the lifting unloading mechanism. The unloading mounting frame is fixedly installed on the frame. The lifting unloading mechanism is installed on the frame and is used to rise upward to receive the lithium batteries on the moving unloading mechanism and lower the lithium batteries onto the conveying device.

[0013] In this invention, the hot pressing device includes a hot pressing mounting frame, a pressure cylinder is mounted on the top of the hot pressing mounting frame, and a hot pressing base plate, several hot pressing layer plates, and a hot pressing top plate are arranged sequentially from bottom to top inside the hot pressing mounting frame. Hot pressing processing areas are formed between the hot pressing base plate and the hot pressing layer plates, between adjacent hot pressing layer plates, and between the hot pressing layer plates and the hot pressing top plate. Multiple guide shafts extending from bottom to top are provided inside the hot pressing mounting frame, and the hot pressing layer plates and the hot pressing top plate are slidably engaged with the guide shafts. The hot pressing base plate is fixedly installed inside the hot pressing mounting frame, and the telescopic rod of the pressure cylinder extends into the hot pressing mounting frame and connects to the hot pressing top plate. Limiting tie rods are provided between the several hot pressing layer plates and the hot pressing top plate, passing through and connecting sequentially from bottom to top.

[0014] In this invention, the hot-pressed top plate is provided with a top plate heating layer, a top plate buffer layer and a top plate heat insulation layer from bottom to top. The top plate heating layer is provided with a hot flow channel through which a heating medium can pass. The bottom of the top plate heating layer is provided with a recessed edge around its perimeter. The top plate heat insulation layer is provided with a folded edge that extends downward and bends inward around its perimeter, which is inserted into the recessed edge. The bottom of the top plate heating layer protrudes from the bottom of the folded edge. A heat-emitting film is provided between the top plate buffer layer and the top plate heat insulation layer.

[0015] The beneficial effects of this invention are: through the coordinated operation of the conveying device, the feeding device, the hot pressing device, the unloading device and the transfer device, a continuous and fully automatic hot pressing processing system is constructed, which completely breaks the limitations of traditional hot pressing equipment that is "single-time single-piece / small-batch processing, and the disconnect between feeding / unloading and hot pressing processing". On the one hand, the transfer device is equipped with N+1 suction mechanisms arranged sequentially along the moving direction. The material picking area of ​​the suction mechanism, the material loading position of the feeding device, and the hot pressing processing area of ​​the hot pressing device are all set with a multi-layer structure, and the number of layers is consistent. This allows the suction mechanism to complete the material picking, transfer, and unloading operations of multiple layers of lithium batteries at one time, realizing "simultaneous hot pressing and batch transfer of multiple lithium batteries", which greatly increases the processing volume per batch. On the other hand, each suction mechanism has a division of labor and cooperation. One suction mechanism is responsible for transferring the lithium batteries in the feeding device to the hot pressing device. The other suction mechanisms simultaneously complete the transfer of lithium batteries between the hot pressing devices or transfer them to the feeding device after hot pressing. At the same time, the feeding device and the unloading device carry out feeding and unloading operations simultaneously, realizing the parallel operation of hot pressing, feeding, unloading, and transfer, which completely reduces the equipment downtime and waiting time, greatly improves processing efficiency, and increases equipment utilization. Attached Figure Description

[0016] Figure 1 This is a perspective view of the automatic processing equipment for the hot pressing molding equipment in this embodiment; Figure 2 This is a perspective view of the transfer device in this embodiment; Figure 3 This is a schematic diagram of the feeding device, unloading device, and conveying device in this embodiment; Figure 4 This is a front structural solid view of the feeding device, unloading device, and hot pressing device in this embodiment; Figure 5 This is a perspective view of the feeding device in this embodiment; Figure 6 This is a perspective view of the moving feeding mechanism in this embodiment; Figure 7 This is a perspective view of the fixed feeding mechanism in this embodiment; Figure 8 This is a flowchart illustrating the feeding process of the feeding device in this embodiment; Figure 9 This is a perspective view of the hot pressing device in this embodiment; Figure 10 This is a schematic diagram of the connection structure between the limiting rod and the locking nut in this embodiment; Figure 11 This is a schematic diagram of the internal structure of the hot-pressed top plate in this embodiment; Figure 12 This is a side view of the material suction mechanism in this embodiment. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0018] like Figures 1 to 12As shown, this embodiment discloses an automatic processing equipment for hot pressing of lithium batteries, including a frame 1. A conveying device 2 is mounted on the frame 1. A feeding device 3 is mounted at the inlet end of the conveying device 2, and a discharging device 4 is mounted at the outlet end of the conveying device 2. N hot pressing devices 5 are arranged sequentially along the conveying direction of the conveying device 2 between the feeding device 3 and the discharging device 4, where N ≥ 1 and N is a positive integer. A transfer device 6 is mounted on one side of the conveying device 2. The transfer device 6 includes a transfer box frame 61, a moving guide rail 62, a moving frame 63, a moving drive mechanism 64, and a suction mechanism 65. The moving guide rail 62 is mounted on the transfer box frame 61 and extends parallel to the conveying direction of the conveying device 2. The moving frame 63 is slidably connected to the moving guide rail 62. The moving drive mechanism 64 is connected to the moving frame 63 and drives the moving frame 63 to slide along the moving guide rail 62. N+1 suction mechanisms 65 are arranged sequentially along the moving direction of the moving frame 63. The feeding device 3 includes a feeding device 4, a feeding device 5, a feeding device 65, a feeding device 65, and a discharging device 65. The system comprises a loading rack 31, a lifting loading mechanism 32, a movable loading mechanism 33, and a fixed loading mechanism 34. The loading rack 31 is fixedly mounted on the frame 1. The lifting loading mechanism 32, mounted on the frame 1, is used to lift and convey the lithium batteries fed in by the conveying device 2 to the movable loading mechanism 33. The movable loading mechanism 33 is installed inside the loading rack 31 and is used to transfer the lithium batteries lifted by the lifting loading mechanism 32 to the fixed loading mechanism 34. The fixed loading mechanism 34 is installed inside the loading rack 31 and is used to... For the lithium batteries transferred by the mobile feeding mechanism 33, the fixed feeding mechanism 34 has multiple feeding positions 341 for placing lithium batteries from bottom to top; each suction mechanism 65 has multiple picking areas 651 from bottom to top; each hot pressing device 5 has multiple hot pressing processing areas 51 from bottom to top; the number of feeding positions 341 of the fixed feeding mechanism 34, the picking areas 651 of the suction mechanism 65 and the hot pressing processing areas 51 of the hot pressing device 5 are equal; the structure of the feeding device 3 is the same as the structure of the unloading device 4.When the automatic hot-press forming processing equipment of this embodiment is working, the lithium batteries to be processed enter from the feeding end of the conveying device 2. The feeding device 3 can automatically feed the lithium batteries one by one to the feeding positions 341 until each feeding position 341 of the fixed feeding mechanism 34 is filled with lithium batteries. Then, one of the suction mechanisms 65 moves to the position of the corresponding feeding device 3, enters the feeding device 3 and removes all the lithium batteries on the feeding positions 341 at once. The suction mechanism 65 transfers the lithium batteries to the hot-press processing areas 51 of the hot-pressing device 5. At the same time, the other suction mechanisms 65 move to the positions of the corresponding hot-pressing devices 5. If a lithium battery in the hot-pressing device 5 has completed hot-press forming, the corresponding suction mechanism 65 enters the hot-pressing device 5 to remove the lithium battery and transfer it to the next hot-pressing device 5 for hot-press forming. After the last hot pressing device 5 completes the hot pressing forming process, the corresponding suction mechanism 65 enters the hot pressing device 5 to remove the lithium battery and transfer it to the unloading device 4. All of the lithium batteries are then placed into the unloading device 4 at once. The unloading device 4 can automatically unload the processed lithium batteries one by one to the conveying device 2, which then transports them to the next process. After transferring the lithium battery to the unloading device 4, the suction mechanism 65 can move back to the corresponding position of the loading device 3 and the hot pressing device 5 to pick up the material. This allows the hot pressing forming process of the lithium battery to continue. During the hot pressing forming process, the loading device 3 and the unloading device 4 complete the loading and unloading work simultaneously. Moreover, the hot pressing device 5 can complete the hot pressing forming of multiple lithium batteries at a time, making the hot pressing forming process of the lithium battery more reasonable and efficient, and greatly improving the utilization rate of the equipment.

[0019] In a preferred embodiment, the feeding time of the feeding device 3, the hot pressing processing time of the hot pressing device 5, and the unloading time of the unloading device 4 are the same. The feeding time of the feeding device 3 refers to the time required for the feeding device 3 to place the lithium batteries fed by the conveying device 2 one by one into the feeding position 341 until all lithium batteries are placed in the feeding position 341. The hot pressing processing time of the hot pressing device 5 refers to the time required for the lithium batteries to be placed in the hot pressing device 5 for hot pressing processing. The unloading time of the unloading device 4 refers to the time required for the unloading device 4 to unload the lithium batteries one by one into the conveying device 2. By setting the feeding time, hot pressing processing time, and unloading time to be the same, the automatic hot pressing processing equipment can operate more smoothly, reducing the downtime and waiting time of the equipment.

[0020] Specifically, the lifting and feeding mechanism 32 includes a lifting mounting plate 321, a lifting cylinder 322, and a lifting plate 323. The lifting mounting plate 321 is fixedly mounted on the frame 1. The lifting cylinder 322 is mounted on the lifting mounting plate 321. The lifting rod of the lifting cylinder 322 extends upward through the lifting mounting plate 321. The lifting plate 323 is mounted on the top of the lifting rod. In order to improve the stability of the lifting plate 323, a guide column 324 is connected to the bottom of the lifting plate 323. The guide column 324 extends downward through the lifting mounting plate 321. The mobile feeding mechanism 33 includes two sets of opposing mobile feeding modules. Each mobile feeding module includes a mobile feeding mounting plate 331 fixedly installed within a feeding mounting frame 31. The mobile feeding mounting plate 331 has two parallel mobile feeding slide rails 332 extending vertically. The mobile feeding slide rails 332 are slidably connected to mobile feeding sliders 333. The mobile feeding sliders 333 are connected to mobile feeding connecting plates 334. The mobile feeding mounting plate 331 also has a mobile feeding telescopic cylinder 335. The telescopic end of the mobile feeding telescopic cylinder 335 is connected to the mobile feeding connecting plate 334, used to push the mobile feeding connecting plate 334 to move vertically. Both sides of the mobile feeding connecting plate 334 are provided with mobile guide rod telescopic cylinders 336, which are connected to mobile feeding brackets 3. 37. The movable feeding bracket 337 is provided with M support positions 338 from bottom to top, where M≥2 and M is a positive integer. In the attached figure of this embodiment, there are 3 support positions 338, i.e., M=3. The movable guide rod telescopic cylinder 336 controls the movable feeding bracket 337 to move in the opposite direction of the two sets of movable feeding modules. The movable feeding telescopic cylinder 335 drives the movable guide rod telescopic cylinders 336 on both sides to move up and down together with the movable feeding bracket 337 by pushing the movable feeding connecting plate 334 to move up and down. When the movable feeding telescopic cylinder 335 drives the movable feeding bracket 337 to move down to the downward position, and the lifting cylinder 322 drives the lifting plate 323 to rise, the lowest support position 338 of the movable feeding bracket 337, the upper surface of the lifting plate 323, and the lowest feeding position 341 are aligned. The fixed feeding mechanism 34 includes two sets of fixed feeding modules arranged opposite each other. Each fixed feeding module includes a fixed guide rod telescopic cylinder 342 fixedly installed in the feeding mounting frame 31. The fixed guide rod telescopic cylinder 342 is distributed on both sides of the moving feeding module. The fixed guide rod telescopic cylinder 342 is provided with a fixed feeding bracket 343. The fixed feeding bracket 343 is provided with a material support position 344. The material support positions 344 at the same height position together form a feeding position 341. The feeding device 3 has M+1 feeding positions 341 from bottom to top. The support position 338 and the feeding position 341 are staggered in the vertical direction, so that when the moving feeding module moves up and down, it can avoid interfering with the fixed feeding module.The fixed feeding bracket 343 can be an integrated bracket structure or a split structure depending on the actual situation. Each split bracket is equipped with a fixed guide rod telescopic cylinder 342 for driving. As shown in the attached figure of this embodiment, each fixed feeding bracket 343 is divided into upper and lower bracket structures. Each split bracket is provided with two material feeding positions 344, so there are four material feeding positions 344 from bottom to top. Each split bracket is independently equipped with a fixed guide rod telescopic cylinder 342. Both structures can achieve the feeding effect of this embodiment.

[0021] Specifically, the feeding process of the feeding device 3 is as follows: Step 1: The fixed guide rod telescopic cylinder 342 drives the fixed feeding bracket 343 to retract, the moving guide rod telescopic cylinder 336 drives the moving feeding bracket 337 to retract, and the moving feeding telescopic cylinder 335 pushes the moving feeding connecting plate 334 to move downward to the downward position; the lifting plate 323 is in the descending state, and the conveying device 2 conveys the lithium battery into the feeding device 3, with the lithium battery located directly above the lifting plate 323; Step 2: The lifting cylinder 322 drives the lifting plate 323 to rise, and the lifting plate 323 lifts the lithium battery to the height corresponding to the lowest loading position 341. Step 3: The moving guide rod telescopic cylinder 336 drives the moving feeding bracket 337 to extend, and the lowest support position 338 receives the lithium battery. The moving feeding telescopic cylinder 335 drives the moving feeding bracket 337 and the lithium battery to move upward to the upward position. At the same time, the lifting cylinder 322 drives the lifting plate 323 to descend. Step 4: The conveying device 2 conveys the next lithium battery into the feeding device 3. The lifting cylinder 322 drives the lifting plate 323 to rise, and the lifting plate 323 lifts the lithium battery to the height corresponding to the lowest feeding position 341. Step 5: The fixed guide rod telescopic cylinder 342 drives the fixed feeding bracket 343 to extend and receive both lithium batteries. Then, the moving guide rod telescopic cylinder 336 drives the moving feeding bracket 337 to retract and detach from the lithium batteries. The moving feeding telescopic cylinder 335 drives the moving feeding bracket 337 to move downward to the downward position. At the same time, the lifting cylinder 322 drives the lifting plate 323 to descend. Step 6: The moving guide rod telescopic cylinder 336 drives the moving feeding bracket 337 to extend and receive the two lithium batteries. The fixed guide rod telescopic cylinder 342 then drives the fixed feeding bracket 343 to retract and detach from the lithium batteries. The moving feeding telescopic cylinder 335 then drives the moving feeding bracket 337 and the two lithium batteries to move upward to the upward position. Step 7: The conveying device 2 conveys the next lithium battery into the loading device 3. The lifting cylinder 322 drives the lifting plate 323 to rise, and the lifting plate 323 lifts the lithium battery to the height corresponding to the lowest loading position 341. Step 8: The fixed guide rod telescopic cylinder 342 drives the fixed feeding bracket 343 to extend and receive all three lithium batteries. Then, the moving guide rod telescopic cylinder 336 drives the moving feeding bracket 337 to retract and detach from the lithium batteries. The moving feeding telescopic cylinder 335 drives the moving feeding bracket 337 to move downward to the downward position. At the same time, the lifting cylinder 322 drives the lifting plate 323 to descend. Step 9: The moving guide rod telescopic cylinder 336 drives the moving feeding bracket 337 to extend and receive the three lithium batteries. The fixed guide rod telescopic cylinder 342 then drives the fixed feeding bracket 343 to retract and detach from the lithium batteries. The moving feeding telescopic cylinder 335 then drives the moving feeding bracket 337 and the three lithium batteries to move upward to the upward position. Step 10: The conveying device 2 delivers the next lithium battery to the loading device 3. The lifting cylinder 322 drives the lifting plate 323 to rise, and the lifting plate 323 lifts the lithium battery to the height corresponding to the lowest loading position 341. Step 11: The fixed guide rod telescopic cylinder 342 drives the fixed feeding bracket 343 to extend and receive all four lithium batteries. Then, the moving guide rod telescopic cylinder 336 drives the moving feeding bracket 337 to retract and detach from the lithium batteries. At the same time, the lifting cylinder 322 drives the lifting plate 323 to descend, thereby completing the lithium battery feeding work at the four feeding positions 341 in the feeding device 3.

[0022] In a preferred embodiment, the unloading device 4 includes an unloading mounting frame 41, a lifting unloading mechanism 42, a moving unloading mechanism 43, and a fixed unloading mechanism 44. The fixed unloading mechanism 44 is installed inside the unloading mounting frame 41 and is used to place the lithium batteries fed in by the suction mechanism 65. The fixed unloading mechanism 44 has multiple unloading positions 45 for placing lithium batteries from bottom to top. The moving unloading mechanism 43 is installed inside the unloading mounting frame 41 and is used to transfer the lithium batteries on the fixed unloading mechanism 44 to the lifting unloading mechanism 42. The unloading mounting frame 41 is fixedly installed on the frame 1. The lifting unloading mechanism 42 is installed on the frame 1 and is used to lift up to receive the lithium batteries on the moving unloading mechanism 43 and lower the lithium batteries onto the conveying device 2. When the unloading device 4 is performing its unloading operation, the suction mechanism 65 places the lithium battery into the unloading device 4. Each unloading position 45 corresponds to one lithium battery. The moving unloading device 4 moves downward to remove the bottommost lithium battery and place it on the lifting unloading mechanism 42. The lifting unloading mechanism 42 is then lowered onto the conveying device 2, thus completing the unloading of one lithium battery. The remaining lithium batteries are unloaded in the same manner. The specific structure of the unloading mounting frame 41 is the same as that of the loading mounting frame 31, the specific structure of the lifting unloading mechanism 42 is the same as that of the lifting loading mechanism 32, the specific structure of the moving unloading mechanism 43 is the same as that of the moving loading mechanism 33, and the specific structure of the fixed unloading mechanism 44 is the same as that of the fixed loading mechanism 34. Therefore, the unloading mounting frame 41, the lifting unloading mechanism 42, the moving unloading mechanism 43, and the fixed unloading mechanism 44 will not be described in detail here. The unloading process of the unloading device 4 is the reverse of the unloading process of the loading device 3.

[0023] In a preferred embodiment, the hot pressing device 5 includes a hot pressing mounting frame 52. A pressure cylinder 53 is mounted on the top of the hot pressing mounting frame 52. A hot pressing base plate 54, several hot pressing layer plates 55, and a hot pressing top plate 56 are sequentially arranged from bottom to top within the hot pressing mounting frame 52. Hot pressing processing areas 51 are formed between the hot pressing base plate 54 and the hot pressing layer plates 55, between adjacent hot pressing layer plates 55, and between the hot pressing layer plates 55 and the hot pressing top plate 56. Multiple guide shafts 57 extending from bottom to top are provided within the hot pressing mounting frame 52. The hot pressing layer plates 55 and the hot pressing top plate 56 are slidably engaged with the guide shafts 57. The hot pressing base plate 54 is fixedly installed within the hot pressing mounting frame 52. The telescopic rod of the pressure cylinder 53 extends into the hot pressing mounting frame 52 and connects to the hot pressing top plate 56. A series of connecting rods extending from bottom to top connects the several hot pressing layer plates 55 to the hot pressing top plate 56. The limiting rod 58 is provided on the hot-pressed plate 55, which has M blocks. The limiting rod 58 includes, from bottom to top, a first limiting segment, a second limiting segment, ..., an M+1th limiting segment and a connecting segment. The outer diameters of the first limiting segment, the second limiting segment, ..., the M+1th limiting segment and the connecting segment decrease sequentially. The hot-pressed plate 55 and the hot-pressed top plate 56, distributed from bottom to top, are respectively provided with a first limiting hole, ..., an M+1th limiting hole. The first limiting hole has a diameter between the outer diameter of the first limiting segment and the outer diameter of the second limiting segment, and so on, with the diameter of the (M+1)th limiting hole between the outer diameter of the (M+1)th limiting segment and the outer diameter of the connecting segment. A locking nut 59 is connected to the connecting segment, and the hot-pressing top plate 56 is locked to the connecting segment by the locking nut 59. The hot-pressing bottom plate 54 has a bottom plate through hole 541 with a diameter larger than the outer diameter of the first limiting segment. When the pressure cylinder 53 presses down, both the hot-pressing layer 55 and the hot-pressing top plate 56 move downwards, and the bottom end of the limiting rod 58 enters the bottom plate through hole 541. Since the outer diameter of the limiting rod 58 decreases sequentially from bottom to top, the limiting rod 58 can continue to move downwards until the hot-pressing layer 55 and the hot-pressing top plate 56 are stacked on the hot-pressing bottom plate 54, thereby performing hot-pressing shaping processing. After the hot pressing and shaping process is completed, the pressure cylinder 53 moves upward to reset. Under the action of the limit rod 58, multiple hot pressing processing areas 51 are formed by separating the hot pressing base plate 54 and the hot pressing layer plate 55, the adjacent hot pressing layer plates 55, and the hot pressing layer plate 55 and the hot pressing top plate 56 by a set distance.

[0024] In a preferred embodiment, the hot-pressing top plate 56 is provided with a top plate heating layer 561, a top plate buffer layer 562, and a top plate heat insulation layer 563 from bottom to top. The top plate heating layer 561 has a hot flow channel 564 through which a heating medium can pass. The bottom of the top plate heating layer 561 has recessed edges 565 around its perimeter. The top plate heat insulation layer 563 has folded edges 566 extending downward and bending inward around its perimeter, which are inserted into the recessed edges 565. The bottom of the top plate heating layer 561 protrudes from the bottom of the folded edges 566, so that when the hot-pressing top plate 56 presses down to contact the lithium battery, the top plate heating layer 561 has an upward buffer margin, thereby providing buffer protection for the lithium battery. Specifically, in order to improve thermal efficiency, a heat-reflecting film is provided between the top plate buffer layer 562 and the top plate heat insulation layer 563. By setting a heat-reflecting film, the heat transferred upward by the heat-heating layer is reflected downward, and the heat energy of the top plate heating layer 561 is transferred downward to the maximum extent for the hot pressing process of the lithium battery. The hot-pressing plate 55 is also provided with a hot flow channel 564 through which a heating medium can pass. The hot-pressing bottom plate 54 has the same structure as the hot-pressing top plate 56. The hot-pressing bottom plate 54 and the hot-pressing top plate 56 are arranged in a mirror image symmetrically, so that the heating layer of the hot-pressing bottom plate 54 faces upward.

[0025] In a preferred embodiment, the conveying device 2 includes two parallel conveyor belts 21, each conveyor belt 21 having limiting guardrails 22 for restricting the lithium battery on both sides. By providing the limiting guardrails 22 on the conveyor belts 21, the lithium battery is kept within a set path during transport under the limiting action of the guardrails 22, preventing transport failures such as the lithium battery detaching from the conveyor belts 21.

[0026] In a preferred embodiment, the suction mechanism 65 includes M+1 suction racks 652, a vertical moving mechanism 653 for driving the suction racks 652 to move up and down, and a front-back moving mechanism 654 for driving the suction racks 652 to move back and forth. Each suction rack 652 is equipped with multiple vacuum suction cups 655. The M+1 suction racks 652 are installed sequentially from bottom to top on the side of the vertical moving mechanism 653 facing the hot pressing device 5. The vertical moving mechanism 653 is mounted on the front-back moving mechanism 654, and the front-back moving mechanism 654 is mounted on the moving frame 63. Both the vertical moving mechanism 653 and the front-back moving mechanism 654 can be driven by telescopic cylinders.

[0027] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by essentially the same means is within the protection scope of the present invention.

Claims

1. An automated processing equipment for hot pressing and molding of lithium batteries, characterized in that: The system includes a frame (1), on which a conveying device (2) is mounted. The inlet end of the conveying device (2) is equipped with a feeding device (3), and the outlet end of the conveying device (2) is equipped with a discharging device (4). Between the feeding device (3) and the discharging device (4) are N hot-pressing devices (5) arranged sequentially along the conveying direction of the conveying device (2). A transfer device (6) is located on one side of the conveying device (2). The transfer device (6) includes a transfer box frame (61), a moving guide rail (62), a moving frame (63), a moving drive mechanism (64), and a suction device. The material feeding mechanism (65) has a movable guide rail (62) mounted on a transfer box frame (61) and extending in a direction parallel to the conveying device (2); a movable frame (63) is slidably connected to the movable guide rail (62); a movable drive mechanism (64) is connected to the movable frame (63) and is used to drive the movable frame (63) to slide along the movable guide rail (62); the material suction mechanism (65) has N+1 units and is arranged sequentially along the moving direction of the movable frame (63); the feeding device (3) includes a feeding mounting frame (31) and a lifting feeding mechanism (32). The system comprises a mobile feeding mechanism (33) and a fixed feeding mechanism (34). The feeding mounting frame (31) is fixedly mounted on the frame (1). The lifting feeding mechanism (32) is mounted on the frame (1) and is used to lift the lithium batteries fed in by the conveying device (2) and send them to the mobile feeding mechanism (33). The mobile feeding mechanism (33) is installed inside the feeding mounting frame (31) and is used to transfer the lithium batteries lifted by the lifting feeding mechanism (32) to the fixed feeding mechanism (34). The fixed feeding mechanism (34) is installed inside the feeding mounting frame (31) and is used to place the mobile feeding machine. The fixed feeding mechanism (34) is provided with multiple feeding positions (341) for placing lithium batteries from bottom to top; each suction mechanism (65) is provided with multiple picking areas (651) from bottom to top; each hot pressing device (5) is provided with multiple hot pressing processing areas (51) from bottom to top; the number of feeding positions (341) of the fixed feeding mechanism (34), the picking areas (651) of the suction mechanism (65) and the hot pressing processing areas (51) of the hot pressing device (5) are equal; the structure of the feeding device (3) is the same as the structure of the unloading device (4).

2. The automatic processing equipment for hot pressing and molding of lithium batteries according to claim 1, characterized in that: The feeding time of the feeding device (3), the hot pressing forming processing time of the hot pressing device (5), and the unloading time of the unloading device (4) are the same.

3. The automatic processing equipment for hot pressing and molding of lithium batteries according to claim 1, characterized in that: The lifting and feeding mechanism (32) includes a lifting mounting plate (321), a lifting cylinder (322), and a lifting plate (323). The lifting mounting plate (321) is fixedly mounted on the frame (1). The lifting cylinder (322) is mounted on the lifting mounting plate (321). The lifting rod of the lifting cylinder (322) extends upward through the lifting mounting plate (321). The lifting plate (323) is mounted on the top of the lifting rod. The bottom of the lifting plate (323) is connected to a guide column (324). The guide column (324) extends downward through the lifting mounting plate (321).

4. The automatic processing equipment for hot pressing and molding of lithium batteries according to claim 3, characterized in that: The mobile feeding mechanism (33) includes two sets of mobile feeding modules arranged opposite to each other. Each mobile feeding module includes a mobile feeding mounting plate (331) fixedly installed in the feeding mounting frame (31). The mobile feeding mounting plate (331) is provided with two parallel mobile feeding slide rails (332) extending vertically. The mobile feeding slide rails (332) are slidably connected to a mobile feeding slider (333). The mobile feeding slider (333) is connected to a mobile feeding connecting plate (334). The mobile feeding mounting plate (331) is also provided with a mobile feeding telescopic cylinder (335). The telescopic end of the mobile feeding telescopic cylinder (335) is connected to the mobile feeding connecting plate (334). Used to push the moving feeding connecting plate (334) up and down; both sides of the moving feeding connecting plate (334) are provided with moving guide rod telescopic cylinders (336), the moving guide rod telescopic cylinders (336) are connected to the moving feeding brackets (337), the moving feeding brackets (337) are provided with M support positions (338) from bottom to top; the moving guide rod telescopic cylinders (336) control the moving feeding brackets (337) to move in the opposite direction of the two sets of moving feeding modules, and the moving feeding telescopic cylinders (335) drive the moving guide rod telescopic cylinders (336) on both sides together with the moving feeding brackets (337) to move up and down by pushing the moving feeding connecting plate (334) up and down.

5. The automatic processing equipment for hot pressing and molding of lithium batteries according to claim 4, characterized in that: The mobile loading telescopic cylinder (335) drives the mobile loading bracket (337) to move downward to the down position, and the lifting cylinder (322) drives the lifting plate (323) to rise upward. When the lowermost support position (338) of the mobile loading bracket (337), the upper surface of the lifting plate (323) and the lowermost loading position (341) are aligned.

6. The automatic processing equipment for hot pressing and molding of lithium batteries according to claim 5, characterized in that: The fixed feeding mechanism (34) includes two sets of fixed feeding modules arranged opposite to each other. The fixed feeding module includes a fixed guide rod telescopic cylinder (342) fixedly installed in the feeding mounting frame (31). The fixed guide rod telescopic cylinder (342) is distributed on both sides of the moving feeding module. The fixed guide rod telescopic cylinder (342) is provided with a fixed feeding bracket (343). The fixed feeding bracket (343) is provided with a material support position (344). The material support positions (344) at the same height position together form a feeding position (341). The feeding position (341) in the feeding device (3) is provided with M+1 from bottom to top. The support position (338) and the feeding position (341) are staggered in the vertical direction.

7. The automatic processing equipment for hot pressing and molding of lithium batteries according to claim 6, characterized in that: The feeding process of the feeding device (3) includes the following steps: Step 1: The fixed guide rod telescopic cylinder (342) drives the fixed feeding bracket (343) to retract, the moving guide rod telescopic cylinder (336) drives the moving feeding bracket (337) to retract, and the moving feeding telescopic cylinder (335) pushes the moving feeding connecting plate (334) to move downward to the downward position; the lifting plate (323) is in the downward state, and the conveying device (2) conveys the lithium battery into the feeding device (3), with the lithium battery located directly above the lifting plate (323); Step 2: The lifting cylinder (322) drives the lifting plate (323) to rise, and the lifting plate (323) lifts the lithium battery to the height corresponding to the lowest loading position (341); Step 3: The moving guide rod telescopic cylinder (336) drives the moving feeding bracket (337) to extend, and the lowest support position (338) receives the lithium battery. The moving feeding telescopic cylinder (335) drives the moving feeding bracket (337) and the lithium battery to move upward to the upward position. At the same time, the lifting cylinder (322) drives the lifting plate (323) to descend. Step 4: The conveying device (2) conveys the next lithium battery into the loading device (3), and the lifting cylinder (322) drives the lifting plate (323) to rise. The lifting plate (323) lifts the lithium battery to the height corresponding to the lowest loading position (341). Step 5: The fixed guide rod telescopic cylinder (342) drives the fixed feeding bracket (343) to extend and receive both lithium batteries. Then, the moving guide rod telescopic cylinder (336) drives the moving feeding bracket (337) to retract and detach from the lithium batteries. The moving feeding telescopic cylinder (335) drives the moving feeding bracket (337) to move downward to the downward position. At the same time, the lifting cylinder (322) drives the lifting plate (323) to descend. Step 6: The moving guide rod telescopic cylinder (336) drives the moving feeding bracket (337) to extend and receive the two lithium batteries. The fixed guide rod telescopic cylinder (342) then drives the fixed feeding bracket (343) to retract and detach from the lithium batteries. The moving feeding telescopic cylinder (335) then drives the moving feeding bracket (337) and the two lithium batteries to move upward to the upward position. Step 7: The conveying device (2) conveys the next lithium battery into the loading device (3), and the lifting cylinder (322) drives the lifting plate (323) to rise. The lifting plate (323) lifts the lithium battery to the height corresponding to the lowest loading position (341). Step 8: The fixed guide rod telescopic cylinder (342) drives the fixed feeding bracket (343) to extend and receive all three lithium batteries. Then, the moving guide rod telescopic cylinder (336) drives the moving feeding bracket (337) to retract and detach from the lithium batteries. The moving feeding telescopic cylinder (335) drives the moving feeding bracket (337) to move downward to the downward position. At the same time, the lifting cylinder (322) drives the lifting plate (323) to descend. Step 9: The moving guide rod telescopic cylinder (336) drives the moving feeding bracket (337) to extend and receive the three lithium batteries. The fixed guide rod telescopic cylinder (342) then drives the fixed feeding bracket (343) to retract and detach from the lithium batteries. The moving feeding telescopic cylinder (335) then drives the moving feeding bracket (337) and the three lithium batteries to move upward to the upward position. Step 10: The conveying device (2) conveys the next lithium battery into the loading device (3), and the lifting cylinder (322) drives the lifting plate (323) to rise. The lifting plate (323) lifts the lithium battery to the height corresponding to the lowest loading position (341). Step 11: The fixed guide rod telescopic cylinder (342) drives the fixed feeding bracket (343) to extend and receive all four lithium batteries. Then, the moving guide rod telescopic cylinder (336) drives the moving feeding bracket (337) to retract and detach from the lithium batteries. At the same time, the lifting cylinder (322) drives the lifting plate (323) to descend, thereby completing the lithium battery feeding work at the four feeding positions (341) in the feeding device (3).

8. The automatic processing equipment for hot pressing and forming of lithium batteries according to claim 1, characterized in that: The unloading device (4) includes an unloading mounting frame (41), a lifting unloading mechanism (42), a moving unloading mechanism (43), and a fixed unloading mechanism (44). The fixed unloading mechanism (44) is installed inside the unloading mounting frame (41) and is used to place the lithium batteries fed in by the suction mechanism (65). The fixed unloading mechanism (44) has multiple unloading positions (45) for placing lithium batteries from bottom to top. The moving unloading mechanism (43) is installed inside the unloading mounting frame (41) and is used to transfer the lithium batteries on the fixed unloading mechanism (44) to the lifting unloading mechanism (42). The unloading mounting frame (41) is fixedly installed on the frame (1). The lifting unloading mechanism (42) is installed on the frame (1) and is used to rise up to receive the lithium batteries on the moving unloading mechanism (43) and lower the lithium batteries onto the conveying device (2).

9. The automatic processing equipment for hot pressing and molding of lithium batteries according to claim 1, characterized in that: The hot pressing device (5) includes a hot pressing mounting frame (52), on the top of which a pressure cylinder (53) is installed. The hot pressing mounting frame (52) contains, from bottom to top, a hot pressing base plate (54), several hot pressing layers (55), and a hot pressing top plate (56). Hot pressing processing areas (51) are formed between the hot pressing base plate (54) and the hot pressing layers (55), between adjacent hot pressing layers (55), and between the hot pressing layers (55) and the hot pressing top plate (56). The mounting frame (52) is provided with multiple guide shafts (57) extending from bottom to top. The hot-pressed layer plate (55) and the hot-pressed top plate (56) are slidably engaged with the guide shafts (57). The hot-pressed bottom plate (54) is fixedly installed in the hot-press mounting frame (52). The telescopic rod of the pressure cylinder (53) extends into the hot-press mounting frame (52) and connects with the hot-pressed top plate (56). There are limiting pull rods (58) that pass through and connect sequentially from bottom to top between several hot-pressed layer plates (55) and the hot-pressed top plate (56).

10. The automatic processing equipment for hot pressing and molding of lithium batteries according to claim 9, characterized in that: The hot-pressed top plate (56) is provided with a top plate heating layer (561), a top plate buffer layer (562) and a top plate heat insulation layer (563) from bottom to top. The top plate heating layer (561) is provided with a hot flow channel (564) through which a heating medium can pass. The bottom of the top plate heating layer (561) is provided with a recessed edge (565) around its perimeter. The top plate heat insulation layer (563) is provided with a folded edge (566) around its perimeter that extends downward and bends inward to fit into the recessed edge (565). The bottom of the top plate heating layer (561) protrudes from the bottom of the folded edge (566). A heat-emitting film is provided between the top plate buffer layer (562) and the top plate heat insulation layer (563).

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