Lithium battery lamination and compaction integrated device

Abstract

The utility model relates to the technical field of lamination and compaction, in particular to a lithium battery lamination and compaction integrated device which comprises a conveying mechanism, a feeding and discharging mechanism and a compaction mechanism, the feeding and discharging mechanism comprises a guide rail and a first driving mechanism, and a clamping device is arranged on the guide rail. The first driving mechanism is used for driving the clamping device to slide along the guide rail, the compacting mechanism is arranged above the guide rail, and the clamping device is used for moving a battery pole piece to be compacted on the conveying mechanism to the position below the compacting mechanism and moving the compacted battery pole piece out of the position below the compacting mechanism. According to the utility model, the charging, the compaction and the discharging of the battery pole piece can be automatically realized.

Description

Technical Field

[0001] This utility model relates to the field of stacking and compaction technology, specifically to an integrated device for stacking and compacting lithium batteries. Background Technology

[0002] Lithium-ion batteries, as a new type of high-energy green battery, have attracted much attention. Developed from rechargeable batteries, they have significant characteristics such as high voltage, high capacity, long cycle life, and good safety performance. They have shown broad application prospects and huge potential economic benefits in portable electronic devices, electric vehicles, space technology, and many other fields, and have rapidly become a research hotspot that has received widespread attention in recent years.

[0003] Chinese utility model patent CN210778856U discloses a lithium battery electrode compaction device. By incorporating elastic sheets and buffer springs, it can better buffer the downward pressure of the pressure plate, effectively preventing damage to the lithium battery due to excessive downward pressure. However, after stacking the battery electrodes, manual placement and compaction of the electrodes under the compaction device are required, followed by manual removal. This loading and unloading method is inefficient and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an integrated lithium battery electrode stacking and compaction device that can automatically realize the feeding, compaction, and unloading of battery electrodes.

[0005] To solve the above-mentioned technical problems, this utility model provides an integrated lithium battery stacking and compaction device, including a conveying mechanism, a loading and unloading mechanism, and a compaction mechanism. The loading and unloading mechanism includes a guide rail and a first driving mechanism. A clamping device is provided on the guide rail. The first driving mechanism is used to drive the clamping device to slide along the guide rail. The compaction mechanism is arranged above the guide rail. The clamping device is used to move the battery electrode sheet to be compacted on the conveying mechanism to below the compaction mechanism, and to move the compacted battery electrode sheet out of below the compaction mechanism.

[0006] In some embodiments, two clamping devices are provided, and the distance between the two clamping devices is not less than the width of the compaction mechanism. The two clamping devices are used for synchronous loading and unloading.

[0007] In some embodiments, the clamping device includes a movable plate slidably connected to a guide rail, a second driving mechanism is provided on the movable plate, a horizontal plate is connected to the output end of the second driving mechanism, the second driving mechanism is used to control the horizontal plate to move up and down, two clamping plates are slidably provided on the horizontal plate, and a third driving mechanism is provided on the horizontal plate, the third driving mechanism is used to drive the two clamping plates to move in opposite directions.

[0008] In some embodiments, a bidirectional lead screw is rotatably mounted on the horizontal plate, and the two clamping plates are threadedly connected to both ends of the bidirectional lead screw. The third driving mechanism drives the two clamping plates to move in opposite directions by driving the bidirectional lead screw.

[0009] In some embodiments, the bottom of the two clamping plates on opposite sides is provided with a slope.

[0010] In some embodiments, the loading and unloading mechanism includes a support frame, the guide rail and the first drive mechanism are both mounted on the support frame, a connecting rod is connected between the two clamping devices, and the first drive mechanism is used to control the synchronous movement of the two clamping devices.

[0011] In some embodiments, two guide rails are arranged in parallel, the clamping device includes two sliding sleeves, the two sliding sleeves are slidably disposed on the two guide rails respectively, and two connecting rods are arranged in parallel, the two ends of the connecting rods being connected to the two sliding sleeves opposite to the two clamping devices respectively.

[0012] In some embodiments, the clamping device includes a limiting rod for restricting the movement of the cross plate.

[0013] In some embodiments, a workbench is included, the compaction mechanism is disposed on the workbench, and two support frames are provided, which are respectively arranged on both sides of the compaction mechanism, one support frame is disposed on the conveying mechanism, and the other support frame is disposed on the workbench.

[0014] In some embodiments, a sensor is provided at one end of the conveying mechanism near the compaction mechanism, and the conveying mechanism includes a PLC controller for controlling the start and stop of the conveying mechanism based on the sensor signal.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The conveying mechanism of this utility model is used to convey stacked battery electrode sheets. The clamping device can move the battery electrode sheets to be compacted on the conveying mechanism to the bottom of the compaction mechanism. After the battery electrode sheets are compacted, the clamping device can move the compacted battery electrode sheets out of the bottom of the compaction mechanism, thereby completing the automatic feeding, compaction and unloading process of battery electrode sheets.

[0017] 2. By setting up two clamping devices, this utility model can improve work efficiency when one clamping device is loading material and the other clamping device is unloading material simultaneously.

[0018] 3. By setting a second driving mechanism and a third driving mechanism, the present invention can control the horizontal plate to descend to a height that can clamp the battery electrode or rise to a height that does not interfere with the battery electrode, and the third driving mechanism can simultaneously control the two clamping plates to move closer or further apart, thereby realizing automatic feeding and unloading.

[0019] 4. By setting an inclined surface, this utility model facilitates the insertion of the clamping plate into the bottom of the battery electrode, thereby easily clamping the battery electrode and improving clamping efficiency.

[0020] 5. The two clamping devices of this utility model are connected by a connecting rod, so that the first driving device can control the two clamping devices to move synchronously, ensuring that loading and unloading are carried out synchronously.

[0021] 6. The clamping device of this utility model ensures the smooth movement of the two clamping devices by setting two sliding sleeves and connecting the sliding sleeves with two connecting rods. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the loading and unloading mechanism of this utility model;

[0024] Figure 3 This is a schematic diagram of the clamping device of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the clamping plate of this utility model;

[0026] Figure 5 This is a schematic diagram of the compaction mechanism of this utility model;

[0027] Figure 6 This is a schematic diagram of the connection structure between the fixing plate and the pressure plate of this utility model.

[0028] Reference numerals: 1-Workbench; 2-Conveyor belt; 21-Sensor; 3-Loading / unloading mechanism; 31-Support frame; 32-Guide rail; 33-Moving plate; 331-Sliding sleeve; 34-Second drive mechanism; 341-Connecting frame; 342-Limiting rod; 35-Horizontal plate; 351-Third drive mechanism; 3511-First pulley; 3512-Belt; 352-Fixing sleeve; 36-Double-acting screw; 361-Second pulley; 37-Clamping plate; 371-L-shaped plate; 372-Inclined surface; 38-First drive mechanism; 39-Connecting rod; 4-Buffer structure; 41-Mounting frame; 42-Hydraulic cylinder; 43-Fixing plate; 44-Sleeve; 45-Inner rod; 46-Spring; 5-Pressure plate. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0030] like Figure 1 As shown, this utility model provides an integrated lithium battery electrode stacking and compaction device, including a conveying mechanism, a loading and unloading mechanism 3, and a compaction mechanism. The loading and unloading mechanism 3 includes a guide rail 32 and a first driving mechanism 38. A clamping device is provided on the guide rail 32. The first driving mechanism 38 is used to drive the clamping device to slide along the guide rail 32. The compaction mechanism is arranged above the guide rail 32. The clamping device is used to move the battery electrode to be compacted on the conveying mechanism to below the compaction mechanism, and to move the compacted battery electrode out of below the compaction mechanism. The first driving mechanism 38 can be a cylinder.

[0031] It is understood that the conveying mechanism of this utility model is used to convey the stacked battery electrode sheets. The clamping device can move the battery electrode sheets to be compacted on the conveying mechanism to the bottom of the compaction mechanism. After the battery electrode sheets are compacted, the clamping device can move the compacted battery electrode sheets out of the bottom of the compaction mechanism, thereby completing the automatic feeding, compaction and unloading process of battery electrode sheets, improving the loading and unloading efficiency and saving labor costs.

[0032] It should be noted that one or more clamping devices can be set as needed. When a clamping device is set, it needs to be responsible for both loading and unloading the battery electrode sheets at the same time. Therefore, setting multiple clamping devices is beneficial to improving efficiency.

[0033] In some embodiments, such as Figure 2 As shown, two clamping devices are provided, and the distance between the two clamping devices is not less than the width of the compaction mechanism. The two clamping devices are used for the synchronous loading and unloading of materials.

[0034] Understandably, since the distance between the two clamping devices is not less than the width of the compaction mechanism, when the battery electrode is being compacted, the compaction mechanism is positioned precisely between the two clamping devices, and the two clamping devices will not interfere with the compaction mechanism. After the battery electrode is compacted, the two clamping devices move simultaneously to the left, reaching the desired position. Figure 1 The state shown is such that, at this time, Figure 1 The left-hand clamping device holds the new battery electrode to be compacted, while the right-hand clamping device holds the already compacted battery electrode. Both clamping devices move to the right simultaneously. The left-hand clamping device moves the battery electrode to be compacted below the compaction mechanism, while the right-hand clamping device moves the compacted battery electrode out of the compaction mechanism, thus achieving simultaneous loading and unloading. This is more efficient than using a single clamping device.

[0035] In some embodiments, such as Figure 3 As shown, the clamping device includes a movable plate 33, which is slidably connected to a guide rail 32. A second drive mechanism 34 is mounted on the movable plate 33 and can be fixed to the movable plate 33 with bolts. The output end of the second drive mechanism 34 passes through the movable plate 33 and is connected to a connecting frame 341. A horizontal plate 35 is connected to the bottom of the connecting frame 341. The second drive mechanism 34 is used to control the up and down movement of the horizontal plate 35. Two clamping plates 37 are slidably mounted on the horizontal plate 35. A third drive mechanism 351 is mounted on the horizontal plate 35 and can be fixed to the horizontal plate 35 with bolts. The third drive mechanism 351 is used to drive the two clamping plates 37 to move in opposite directions. The second drive mechanism 34 can be a cylinder, and the third drive mechanism 351 can be a motor. By setting a second drive mechanism 34 and a third drive mechanism 351, the second drive mechanism 34 can control the horizontal plate 35 to descend to a height that can hold the battery electrode or rise to a height that does not interfere with the battery electrode. The third drive mechanism 351 can simultaneously control the two clamping plates 37 to move closer or further away, thereby realizing automatic feeding and unloading.

[0036] In some embodiments, such as Figure 3 As shown, a bidirectional lead screw 36 is mounted on a horizontal plate 35, and two fixed sleeves 352 are fixedly mounted on the horizontal plate 35. The two ends of the bidirectional lead screw 36 are rotatably connected to the two fixed sleeves 352 respectively. Two clamping plates 37 are threadedly connected to the two ends of the bidirectional lead screw 36. A third drive mechanism 351 drives the two clamping plates 37 to move in opposite directions by driving the bidirectional lead screw 36. The third drive mechanism 351 can drive the bidirectional lead screw 36 to rotate via a belt 3512. A first pulley 3511 is fixedly mounted on the output shaft of the third drive mechanism 351 via a key, and a second pulley 361 is fixedly mounted on the middle of the bidirectional lead screw 36 via a key. The first pulley 3511 and the second pulley 361 are connected by a belt 3512, thus realizing the drive of the bidirectional lead screw 36 by the third drive mechanism 351.

[0037] In some embodiments, such as Figure 4 As shown, the clamping plate 37 includes an L-shaped plate 371, and an inclined surface 372 is provided at the bottom of one of the opposite sides of the two L-shaped plates 371. Since the battery electrode is placed on the conveying mechanism, it is necessary to ensure that the clamping mechanism can clamp the entire battery electrode. By providing the inclined surface 372, the clamping plate 37 can be easily inserted into the bottom of the battery electrode, thereby easily clamping the battery electrode and improving clamping efficiency.

[0038] In some embodiments, such as Figure 2As shown, the loading and unloading mechanism 3 includes a support frame 31, a guide rail 32 and a first drive mechanism 38, all of which are mounted on the support frame 31. The output end of the first drive mechanism 38 is connected to the moving plate 33 of one of the clamping devices. A connecting rod 39 is connected between the two clamping devices. The first drive mechanism 38 is used to control the synchronous movement of the two clamping devices.

[0039] The two clamping devices of this utility model are connected by a connecting rod 39, so that the first driving device can control the two clamping devices to move synchronously, ensuring that loading and unloading are carried out synchronously.

[0040] In some embodiments, such as Figure 2 As shown, two guide rails 32 are arranged in parallel, as follows: Figure 3 As shown, the clamping device includes two sliding sleeves 331, which are slidably mounted on two guide rails 32, respectively. Figure 2 As shown, two connecting rods 39 are arranged in parallel, and the two ends of the connecting rods 39 are respectively connected to two sliding sleeves 331 opposite to the two clamping devices. By setting two sliding sleeves 331 and connecting them with two connecting rods 39, the smoothness of the movement of the two clamping devices is ensured.

[0041] In some embodiments, such as Figure 2 As shown, the clamping device includes a limiting rod 342, one end of which passes through the movable plate 33 and engages with the connecting frame 341. An elastic sleeve can be fitted onto the lower end of the limiting rod 342.

[0042] In some embodiments, such as Figure 1 As shown, the lithium battery stacking and compaction integrated device also includes a workbench 1, a compaction mechanism is set on the workbench 1, and two support frames 31 are provided. The two support frames 31 are respectively arranged on both sides of the compaction mechanism, one support frame 31 is arranged on the conveying mechanism, and the other support frame 31 is arranged on the workbench 1.

[0043] In some embodiments, a sensor 21 is installed at one end of the conveying mechanism near the compaction mechanism. The conveying mechanism includes a PLC controller and a conveyor belt 2. The stacking machine stacks the battery electrode sheets, and the stacked battery electrode sheets are conveyed to the compaction process by the conveyor belt 2. The PLC controller is used to control the start and stop of the conveying mechanism according to the signal from the sensor 21. That is, when the sensor 21 sends a signal to the PLC controller, it indicates that a battery electrode sheet has moved to the left side of the guide rail 32 and the conveying should be stopped to wait for the clamping mechanism. The sensor 21 can be a light sensor 21.

[0044] In some embodiments, such as Figure 5As shown, the compaction mechanism includes a mounting frame 41 and a hydraulic cylinder 42. The mounting frame 41 spans two guide rails 32. The hydraulic cylinder 42 is fixed on the mounting frame 41. The output end of the hydraulic cylinder 42 passes through the mounting frame 41 and is fitted with a fixing plate 43. A pressure plate 5 is elastically connected to the lower surface of the fixing plate 43. Figure 6 As shown, a buffer structure 4 is provided between the fixed plate 43 and the pressure plate 5. The buffer structure 4 includes four sleeves 44 disposed on the lower surface of the fixed plate 43. Springs 46 are fitted over the sleeves 44. Four inner rods 45 are fixedly disposed on the upper surface of the pressure plate 5. The four inner rods 45 are slidably inserted into the four sleeves 44 respectively. The inner rods 45 cannot be completely pulled out of the sleeves 44. The two ends of the springs 46 abut against the fixed plate 43 and the pressure plate 5 respectively, thereby achieving the buffering effect and avoiding damage to the battery electrode during the compaction process.

[0045] The working principle of this integrated lithium battery stacking and compaction device is as follows:

[0046] like Figure 1 As shown, the stacking machine stacks the electrode sheets, and the stacked battery electrode sheets are transported by the conveyor belt 2. When the sensor 21 senses the battery electrode sheet, the PLC controller stops the conveyor belt 2, and the first drive mechanism 38 controls the two clamping mechanisms to move to the left, so that the left clamping mechanism can clamp the battery electrode sheet on the conveyor belt 2. At the same time, the second drive mechanism 34 of the two clamping mechanisms is started to drive the corresponding moving plate 33 to move down.

[0047] Then the two third drive mechanisms 351 rotate synchronously in the forward direction. The third drive mechanism 351 drives the bidirectional lead screw 36 to rotate on the fixed sleeve 352. The bidirectional lead screw 36 synchronously drives the two clamping plates 37 to move closer to each other. The clamping mechanism on the left clamps the battery electrode sheet to be compacted on the conveyor belt 2, and the clamping mechanism on the right clamps the compacted battery electrode sheet.

[0048] Then the second drive mechanism 34 controls the moving plate 33 to move upward, and controls the two clamping mechanisms to move to the right. When the left clamping mechanism moves to the bottom of the pressure plate 5, the right clamping mechanism moves to the right side of the worktable 1. The second drive mechanism 34 controls the moving plate 33 to move downward, and the third drive mechanism 351 controls the two clamping plates 37 to move away from each other, so that the battery electrode to be compacted is placed directly below the compaction mechanism, completing the feeding. The compacted battery electrode is simultaneously unloaded.

[0049] At this time, the left clamping mechanism is also directly below the compaction mechanism. Therefore, after the horizontal plate 35 is moved upward, the first drive mechanism 38 controls the two clamping mechanisms to move to the left simultaneously, so that the two clamping mechanisms are located on both sides of the compaction mechanism, without affecting the operation of the compaction mechanism. Then, the hydraulic cylinder 42 drives the pressure plate 5 to compact the battery electrode sheets. After compaction is completed, the first drive mechanism 38 controls the two clamping mechanisms to continue moving to the left, so that the left clamping device moves to the upper right end of the conveyor belt 2, and the right clamping mechanism moves to directly below the compaction mechanism, thus realizing the cyclic feeding and unloading.

[0050] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. An integrated device for stacking and compacting lithium battery cells, characterized in that: The device includes a conveying mechanism, a loading and unloading mechanism (3), and a compaction mechanism. The loading and unloading mechanism (3) includes a guide rail (32) and a first driving mechanism (38). A clamping device is provided on the guide rail (32). The first driving mechanism (38) is used to drive the clamping device to slide along the guide rail (32). The compaction mechanism is arranged above the guide rail (32). The clamping device is used to move the battery electrode to be compacted on the conveying mechanism to below the compaction mechanism and to move the compacted battery electrode out of below the compaction mechanism.

2. The lithium battery stacking and compaction integrated device according to claim 1, characterized in that: Two clamping devices are provided, and the distance between the two clamping devices is not less than the width of the compaction mechanism. The two clamping devices are used for the synchronous loading and unloading of materials.

3. The lithium battery stacking and compaction integrated device according to claim 2, characterized in that: The clamping device includes a movable plate (33) which is slidably connected to a guide rail (32). A second drive mechanism (34) is provided on the movable plate (33). A horizontal plate (35) is connected to the output end of the second drive mechanism (34). The second drive mechanism (34) is used to control the horizontal plate (35) to move up and down. Two clamping plates (37) are slidably provided on the horizontal plate (35). A third drive mechanism (351) is provided on the horizontal plate (35). The third drive mechanism (351) is used to drive the two clamping plates (37) to move in opposite directions.

4. The integrated lithium battery stacking and compaction device according to claim 3, characterized in that: A bidirectional lead screw (36) is rotatably mounted on the horizontal plate (35). The two clamping plates (37) are threadedly connected to both ends of the bidirectional lead screw (36). The third driving mechanism (351) drives the two clamping plates (37) to move in opposite directions by driving the bidirectional lead screw (36).

5. The lithium battery stacking and compaction integrated device according to claim 3, characterized in that: The bottom of the two clamps (37) on opposite sides is provided with a slope (372).

6. The lithium battery lamination compaction integrated device according to any one of claims 1 to 5, characterized in that: The loading and unloading mechanism (3) includes a support frame (31), the guide rail (32) and the first drive mechanism (38) are both mounted on the support frame (31), and a connecting rod (39) is connected between the two clamping devices. The first drive mechanism (38) is used to control the synchronous movement of the two clamping devices.

7. The lithium battery stacking and compaction integrated device according to claim 6, characterized in that: Two guide rails (32) are arranged in parallel. The clamping device includes two sliding sleeves (331), which are slidably mounted on the two guide rails (32). Two connecting rods (39) are arranged in parallel, and the two ends of the connecting rods (39) are respectively connected to the two sliding sleeves (331) opposite to the two clamping devices.

8. The lithium battery stacking and compaction integrated device according to claim 7, characterized in that: The clamping device includes a limiting rod (342) for limiting the movement of the horizontal plate (35).

9. The lithium battery stacking and compaction integrated device according to claim 6, characterized in that: Includes a workbench (1), the compaction mechanism is set on the workbench (1), and two support frames (31) are provided. The two support frames (31) are respectively arranged on both sides of the compaction mechanism, one support frame (31) is arranged on the conveying mechanism, and the other support frame (31) is arranged on the workbench (1).

10. The lithium battery stacking and compaction integrated device according to claim 9, characterized in that: A sensor (21) is provided at one end of the conveying mechanism near the compaction mechanism. The conveying mechanism includes a PLC controller, which is used to control the start and stop of the conveying mechanism according to the signal from the sensor (21).

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