Battery cell extrusion assembly and battery cell extrusion method

Abstract

The present invention discloses a battery cell extrusion assembly and a battery cell extrusion method, comprising a support device and an extrusion rotation device. The extrusion rotation device is disposed on the support device and is capable of extruding and rotating battery cells that have been transferred to the extrusion rotation device and then returning them to their original positions. The battery cell extrusion assembly disclosed in the present invention can improve work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery cell extrusion assembly and a battery cell extrusion method. Background Art

[0002] At present, new energy vehicles generally use lithium-ion batteries as power batteries. As lithium batteries are increasingly used in life and production, the quality issues of lithium batteries have also attracted close attention.

[0003] The smallest energy storage unit of a power battery is the battery cell. The battery cell needs to withstand a certain amount of compression force during the process of assembling into a module. If the packaging strength of the battery cell's liquid filling port and the welding strength of the upper cover do not meet the process requirements, the battery cell will leak during the assembly process or in subsequent use, causing the battery pack to short-circuit, posing a major safety hazard.

[0004] The existing technology, a utility model patent with a patent authorization announcement number CN217179848U, comprises a carrying assembly disposed on the rotating assembly and used to carry the battery cell, and an extrusion assembly disposed on the rotating assembly and used to squeeze the battery cell; the rotating assembly is provided with a first driving assembly that drives the extrusion assembly toward the battery cell; the first driving assembly drives the extrusion assembly to move toward the battery cell, and under the extrusion action of the extrusion assembly, the battery cell carried on the carrying assembly is subjected to an extrusion test, meeting the requirements of simultaneous inspection of multiple battery cells. The rotating assembly drives the carrying assembly to rotate, allowing leakage from the battery cell to flow smoothly out of the carrying assembly, thereby efficiently and intuitively determining whether the battery cell is leaking, thereby further improving the efficiency of battery cell leakage detection. However, the existing technology uses a separate tool to perform extrusion leakage inspection on the battery cell, which cannot be coordinated with the automation of a complete production line.

[0005] The existing solution is to manually remove the battery cells before they come off the line, using tooling to squeeze the cells upside down. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to solve the problem that the existing battery cell extrusion leakage solutions all require manual removal of the battery cell before it comes off the line, and then use separate tooling to squeeze the battery cell upside down, which cannot be coordinated with the complete battery cell process production line automation.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A battery cell extrusion assembly includes: a support device 310 and an extrusion rotation device. The extrusion rotation device is arranged on the support device 310 and can extrude and rotate the battery cell 800 flowing under the extrusion rotation device and restore it to its original position.

[0009] Advantages: The extruded battery cell can be flipped upside down through the extrusion rotating device, and the flipped battery cell can be placed back on the battery tray to be transferred to the next station. This solves the problem that the battery cell leakage solution is to manually remove the battery cell before it goes off the line, and then use a separate tool to squeeze the battery cell upside down, which cannot be coordinated with the complete process production line automation of the battery cell.

[0010] In one embodiment of the present invention, the extrusion and rotation device includes a support component 320 mainly composed of a fixed plate 321, a lifting plate 322 and a plurality of linear bearings 323. The fixed plate 321 is fixedly connected to the support device 310, and the lifting plate 322 is located below the fixed plate 321 in the support device 310. The two ends of the plurality of linear bearings 323 are respectively connected to the lifting plate 322 and the fixed plate 321. By providing thrust or pulling force to the lifting plate 322, the lifting plate 322 and the fixed plate 321 can be moved relative to each other.

[0011] In one embodiment of the present invention, the supporting component 320 also includes an extrusion sliding plate 325, an extrusion fixing plate 326 and a slide rail slider pair 327, one side of the slide rail slider pair 327 is fixed at one end of the lifting plate 322, and the other side thereof is fixedly connected to the extrusion sliding plate 325, so that the extrusion sliding plate 325 can slide on the lifting plate 322; the extrusion fixing plate 326 is fixedly connected to the other end of the lifting plate 322.

[0012] In one embodiment of the present invention, the extrusion rotation device includes an extrusion component mainly composed of a pushing electric cylinder 331 and a pushing block 332, and the pushing electric cylinder 331 is fixedly connected to the lifting plate 322; the pushing block 332 is located at the output end of the pushing electric cylinder 331, and one end thereof is fixedly connected to the extrusion sliding plate 325. When the output end of the pushing electric cylinder 331 extends, it pushes the pushing block 332, so that the extrusion sliding plate 325 can move backward along the slide rail slider pair 327.

[0013] In one embodiment of the present invention, the extrusion component also includes an extrusion rotating motor 333, a movable bearing seat 334 and a flipping battery component 359. The movable bearing seat 334 is connected to the extrusion sliding plate 325. One end of the movable bearing seat 334 is fixedly connected to the output end of the extrusion rotating motor 333, and the other end is fixedly connected to the flipping battery component 359.

[0014] In one embodiment of the present invention, the flipping battery core component 359 includes a plurality of rotating plates 335 and at least two pairs of optical rods 337; the plurality of rotating plates 335 are connected to the movable bearing seat 334, and when the movable bearing seat 334 rotates, it can drive the plurality of rotating plates 335 to rotate together; the two ends of the optical rod 337 are respectively fixedly connected to the rotating plates 335; when the plurality of rotating plates 335 are subjected to a thrust, they approach the extrusion fixing plate 326, and when the plurality of rotating plates 335 are subjected to a pulling force, they move away from the extrusion fixing plate 326.

[0015] In one embodiment of the present invention, the flip battery cell component 359 also includes a plurality of battery cell clamps 338, and the plurality of battery cell clamps 338 are mounted on the optical rod 337 and can slide on the optical rod 337; the other end of the movable bearing seat 334 is fixedly connected to the closest battery cell clamp 338.

[0016] In one embodiment of the present invention, the flip battery cell component 359 also includes a plurality of clips 339 mainly consisting of a first clip 3391, a second clip 3392 and a third clip 3393 connected in sequence end to end; one end of the first clip 3391 is fixedly connected to the battery cell splint 338 closest to the movable bearing seat 334, and the other end is open upward to form a recess 3394, and a groove 3396 is provided at the bottom of the recess 3394, and the groove 3396 engages the battery cell splint 338; one end of the third clip 3393 is connected to the rotating plate 335, and the other end is open downward to form a convex portion 3395; the second clip 3392 is "S"-shaped, and has both the recess 3394 and the convex portion 3395.

[0017] In one embodiment of the present invention, the design rules of the first width b1 of the recess 3394 and the second width b2 of the protrusion 3395 are as follows: when the multiple battery cell clips 338 are pulled apart, the two adjacent second clips 3392 contact and restrict each other, so that the distance between the two adjacent battery cell clips 338 is equal to the spacing between the two adjacent intermediate limit plates; when the multiple battery cell clips 338 are squeezed, the moving distance of each second clip 3392 in the recess 3394 and the protrusion 3395 is greater than the moving distance of each battery cell clip 338, so that when the battery cell 800 is squeezed, the two adjacent second clips 3392 do not contact each other.

[0018] In one embodiment of the present invention, the extrusion rotation device also includes an auxiliary rotating component 340 composed of an auxiliary rotating cylinder 341 and a rotating shaft 342, the auxiliary rotating cylinder 341 is fixedly connected to one end of the rotating shaft 342, and the other end of the rotating shaft 342 is connected to the rotating plate 335; the auxiliary rotating cylinder 341 provides auxiliary force for flipping the flipping battery core component 359.

[0019] In one embodiment of the present invention, the extrusion and rotation device further includes a reset member 370 . A pair of the reset members 370 are respectively located on both sides of the lifting plate 322 , and one end of the reset members 370 is fixedly connected to the lifting plate 322 .

[0020] In one embodiment of the present invention, the extrusion rotation device also includes a lifting component 350 consisting of a lifting component 351 and a lifting cylinder 352, wherein the lifting component 351 is fixedly connected to the lifting plate 322; the lifting cylinder 352 is fixedly connected to the fixed plate 321, and its output end is fixedly connected to the lifting component 351; the lifting plate 322 can be moved up and down by the lifting component 350.

[0021] The present invention also provides a method for performing battery cell extrusion using a battery cell extrusion assembly, comprising: the extrusion rotation device performs an extrusion step, a lifting step, a rotation and inversion step, a pressure maintaining step, a rotation and returning step, a descending step and a reset step on the battery cell 800 flowing thereunder, so that the battery cell 800 returns to its original position after completing the extrusion rotation.

[0022] In one embodiment of the present invention, when the battery cells are transferred to the station of the battery cell extrusion assembly, the lifting cylinder pushes the lifting plate downward to place the plurality of battery cell clamps in the battery cell tray;

[0023] The extrusion rotating motor is started to drive the rotating telescopic rod to rotate together, and the rotating bearing seat is rotated to drive the extrusion sliding plate to move forward along the slide rail slider pair, so that the first rotating plate is squeezed toward the second rotating plate; at the same time, the rotating telescopic rod pushes the multiple battery clamping plates to squeeze the battery cells in the battery tray;

[0024] The lifting cylinder drives the lifting plate to move upward. When it rises to a certain height, the extrusion rotating motor and the auxiliary rotating component drive the flipping battery core component to flip, so that the battery core is inverted and pressure maintained for a certain period of time;

[0025] After the battery core pressure maintenance is completed, the flipped battery core component is returned to the normal position again through the extrusion rotation motor and the auxiliary rotation component;

[0026] The auxiliary rotating component is closed, and the lifting cylinder pushes the lifting plate downward to place the battery cell in the battery cell tray;

[0027] The electric cylinder is started to push the pushing block to move backward, and at the same time, the extrusion sliding plate is moved backward through the movable bearing seat, and the multiple battery cell clamping plates are longitudinally pulled apart in the battery cell tray through multiple buckles;

[0028] The pushing electric cylinder and the extrusion rotating motor are turned off, and the lifting cylinder drives the lifting plate to move upward. The battery cell after extrusion is located in the battery cell tray to be transferred to the next station.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The battery cell process is divided into the following steps, namely, extrusion step, lifting step, rotation and inversion step, pressure holding step, rotation and return step, lowering step and reset step. The battery cells that have completed extrusion are placed in the battery cell tray again. The entire process is fully automated, realizing online fully automated extrusion and inversion of the battery cells, thereby improving work efficiency.

[0031] The battery cell tray mainly plays the role of limiting and preventing the battery cells from tipping over during the transfer process between workstations. At the same time, when the battery cell tray is under the extrusion assembly station, the middle limit plate moves downward during the downward pressure of the lifting device, and is in a downward pressure state. At this time, the left and right sides of the battery cell still remain limited, and the battery cell can be moved in the front and back directions, thereby realizing the battery cell extrusion function. In order to prevent the risk of the battery cell being crushed due to the middle limit block not being pressed down into place during the longitudinal extrusion process, multiple downward pressure sensors are set at the extrusion assembly station, on the side of the flow group, and below the bottom plate to detect whether the lower pressure plate is pressed into place, and to ensure that the middle limit plate is lowered into place before the battery cell extrusion action is performed. When the lifting device drives the extrusion device and the rotating device to rise, the guide rod and spring are used to reset the middle limit plate to normal, and the front and back direction of the battery cell is limited again, realizing the limiting function and protective role of the battery cell during the subsequent battery cell transportation, battery cell inspection and battery cell unloading.

[0032] The circulation component adopts a double-layer return flow line, which is a double-layer circulating speed chain line to realize the circulation of the battery cell tray. The top streamlined body drives the fully loaded battery cell tray for material flow, and the lower streamlined body realizes the battery cell tray reflux function. There are multiple stopping mechanisms and multiple lifting and positioning mechanisms designed on the speed chain line. Through multiple positioning sensors and station controllers, the battery cell tray is stopped and positioned at the corresponding station.

[0033] The loading mechanical axis enables multi-axis motion and flexible cell handling. A pneumatic controller controls the simultaneous clamping and releasing of multiple grippers. Insulating pads placed on the multiple grippers prevent metal-to-metal contact and sparks, while also increasing the friction coefficient with the cells to ensure gripping force. Automated cell loading is achieved through the loading assembly.

[0034] The leak detection component uses an optical solution to detect leaks, identifying the difference in optical imaging between the battery cell surface in a leaking state and a normal state without leaking, thereby determining the battery cell leakage situation and achieving automatic leakage detection.

[0035] The unloading component is connected to the leak detection component through communication. According to the detection results of the leak detection component, the air circuit of each clamp is controlled separately, and the qualified battery cells are taken away and placed in the battery cell material frame, and the unqualified battery cells are placed in the NG component to realize automatic unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of a battery cell extrusion assembly according to an embodiment of the present invention.

[0037] Figure 2 Schematic diagram of a supporting device according to an embodiment of the present invention.

[0038] Figure 3 Schematic diagram of an extrusion rotation device according to an embodiment of the present invention.

[0039] Figure 4 Schematic diagram of the extrusion and rotation device from another angle according to an embodiment of the present invention.

[0040] Figure 5 This is a partial enlarged view of the first buckle and the second buckle according to an embodiment of the present invention.

[0041] Figure 6 This is a partial enlarged view of the second buckle and the third buckle according to an embodiment of the present invention.

[0042] Figure 7 The present invention is a flowchart of a method for performing cell extrusion using a cell extrusion assembly according to an embodiment of the present invention.

[0043] Figure 8 Schematic diagram of an automatic detection device for battery cell leakage according to an embodiment of the present invention.

[0044] Figure 9 Schematic diagram of an automatic detection device for battery cell leakage from another angle according to an embodiment of the present invention.

[0045] Figure 10 Schematic diagram of a battery cell tray according to an embodiment of the present invention.

[0046] Figure 11 Schematic diagram of a battery cell tray from another angle according to an embodiment of the present invention.

[0047] Figure 12 Schematic diagram of a first double-layer return line according to an embodiment of the present invention.

[0048] Figure 13This is a partial enlarged view of the stopping mechanism and the lifting and positioning mechanism of an embodiment of the present invention.

[0049] Figure 14 Schematic diagram of a loading assembly according to an embodiment of the present invention.

[0050] Figure 15 Schematic diagram of the NG component according to an embodiment of the present invention.

[0051] Figure 16 A flow chart of a method for detecting battery cell leakage using an automatic detection device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0052] To facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described with reference to the accompanying drawings.

[0053] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0054] Example 1

[0055] See also Figure 1 As shown, the present invention provides an extrusion assembly, including a support device 310 and an extrusion rotation device. The extrusion rotation device is arranged on the support device 310, and can transfer the battery cell 800 under the extrusion rotation device to the original position after extrusion rotation.

[0056] Please refer to Figure 2. In one embodiment of the present invention, the support device 310 includes a support leg 311 and a connecting beam 312. One end of the support leg 311 is fixedly connected to the ground through an expansion bolt, and the other end is fixedly connected to the connecting beam 312.

[0057] See also Figure 3 As shown, in one embodiment of the present invention, the extrusion and rotation device includes a supporting component 320, an extrusion component, an auxiliary rotation component 340, a lifting component 350, a detection device 360 ​​and a reset component 370. Through the mutual cooperation of the various components in the extrusion and rotation device, the battery cell can be extruded and rotated and then restored to its original position.

[0058] See also Figure 3 and Figure 4As shown, in one embodiment of the present invention, the support component 320 includes a fixed plate 321, a lifting plate 322, a plurality of linear bearings 323, and a lifting limit plate 324. The fixed plate 321 is fixedly connected to the connecting crossbeam 312, and a lifting component 350 is fixedly disposed on the top surface of the fixed plate 321. One end of the plurality of linear bearings 323 passes through the four corners of the fixed plate 321 and is fixedly connected to the lifting limit plate 324. The other ends of the plurality of linear bearings 323 are fixedly connected to one side of the lifting plate 322. The lifting component 350 is also fixedly connected to one side of the lifting plate 322. The lifting component 350 provides power to lift and lower the lifting plate 322. The support component 320 also includes an extrusion sliding plate 325, an extrusion fixing plate 326, and a slide block pair 327. One side of the slide block pair 327 is fixed to one end of the other side of the lifting plate 322, and the other side is fixedly connected to the extrusion sliding plate 325, allowing the extrusion sliding plate 325 to slide on the lifting plate 322. The pressing fixing plate 326 is fixed to the other end of the other side surface of the lifting plate 322 by bolts.

[0059] See also Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the extrusion component includes a pushing cylinder 331 and a pushing block 332. The pushing cylinder 331 is fixedly connected to one side of the lifting plate 322. The lifting plate 322 is also provided with a first through-hole 3221, located on the same side of the lifting plate 322 as the extrusion slide plate 325, and between two adjacent slide rail slider assemblies 327. The pushing block 332 is located on one side of the output end of the pushing cylinder 331 and within the first through-hole 3221. One end of the pushing block 332 is fixedly connected to the extrusion slide plate 325. When the output end of the pushing cylinder 331 extends, it pushes the pushing block 332, causing the extrusion slide plate 325 to move backward via the slide rail slider assemblies 327.

[0060] See also Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the extrusion component 330 further includes an extrusion rotation motor 333, a movable bearing seat 334, and a flipping battery cell component 359. A second through hole 3251 is provided on the extrusion sliding plate 325, and a copper sleeve is embedded in the second through hole 3251. The movable bearing seat 334 is located in the second through hole 3251 and is connected to the extrusion sliding plate 325. A rotating telescopic rod 3341 is provided in the movable bearing seat 334. One end of the rotating telescopic rod 3341 is fixedly connected to the extrusion rotation motor 333 via a coupling, and the other end of the rotating telescopic rod 3341 is fixedly connected to the flipping battery cell component 359. When the extrusion rotation motor 333 is working, the movable bearing seat 334 can drive the extrusion sliding plate 325 to move forward or backward, and the rotating telescopic rod 3341 can cause the flipping battery cell component 359 to extrude the battery cell or restore the extruded battery cell to its original position.

[0061] See also Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the flipping battery cell component 359 is located between the extrusion fixed plate 326 and the slide rail slider pair 327. The flipping battery cell component 359 includes multiple rotating plates 335, multiple short shafts 336, at least two pairs of polished rods 337, multiple battery cell clamps 338, and multiple clips 339. The polished rods 337 pass through the multiple battery cell clamps 338, allowing the multiple battery cell clamps 338 to slide on the polished rods 337. The multiple clips 339 are fixedly connected to the multiple battery cell clamps 338, allowing the battery cell clamps 338 to be pulled apart after the battery cell clamps 338 have completed extruding the battery cells. Specifically, the multiple rotating plates 335 include a first rotating plate 3351, a second rotating plate 3352, and a third rotating plate 3353, wherein the first rotating plate 3351 is located on the side close to the extrusion sliding plate 325, and the second rotating plate 3352 and the third rotating plate 3353 are located on the side close to the extrusion fixed plate 326. The first rotating plate 3351 is connected to the movable bearing seat 334. When the movable bearing seat 334 rotates, it drives the first rotating plate 3351 to rotate together. The second rotating plate 3352 and the third rotating plate 3353 are connected by multiple short shafts 336. These short shafts 336 are located at the four corners of the third rotating plate 3353, with one end fixedly connected to the third rotating plate 3353. The second rotating plate 3352 is sleeved on the other end of the short shafts 336. When the second rotating plate 3352 is pushed by the short shafts 336, it moves closer to the third rotating plate 3353. When the second rotating plate 3352 is pulled, it moves away from the third rotating plate 3353. At least two pairs of polished rods 337 are fixedly connected to the first rotating plate 3351 and the second rotating plate 3352 at both ends, respectively, with a certain horizontal height between them.

[0062] See also Figures 3 to 6As shown, in one embodiment of the present invention, lugs 3381 are provided on both sides of the battery cell splint 338. Specifically, the battery cell splint 338 is in the shape of a "cross". The first polished rod 3371 passes through the lugs 3381, allowing the battery cell splint 338 to slide on the first polished rod 3371, and the top of the battery cell splint 338 is located between the second polished rods 3371. When the multiple battery cell splints 338 are reversed, the multiple battery cell splints 338 are reversed together through the second polished rods 3371. The other end of the rotating telescopic rod 3341 is fixedly connected to the battery cell splint 338 closest to the rotating telescopic rod 3341, and under normal conditions, the multiple battery cell splints 338 are in a pulled-apart state. The multiple clips 339 include a first clip 3391, a second clip 3392, and a third clip 3393, which are connected end to end. One end of the first clip 3391 is fixedly connected to the battery clamping plate 338 closest to the rotating telescopic rod 3341, while the other end is open upward, forming a recess 3394. A groove 3396 is provided at the bottom of the recess 3394, which engages with the lug 3381. One end of the third clip 3393 is fixedly connected to the second rotating plate 3352, while the other end is open downward, forming a protrusion 3395. The second clip 3392 is arranged in an "S" shape, and has a recessed portion 3394 and a protruding portion 3395. Multiple second clips 3392 are connected end to end. When the end and tail of a second clip 3392 are respectively located in the recessed portion 3394 and the protruding portion 3395 of the second clips 3392 on both sides, it can move forward when the multiple battery clips 338 are squeezed, and move backward when the multiple battery clips 338 are pulled apart. The design rules for the first width b1 of the recess 3394 and the second width b2 of the protrusion 3395 are as follows: when multiple battery cell clips 338 are pulled apart, two adjacent second clips 3392 contact and restrict each other, so that the distance between the two adjacent battery cell clips 338 is equal to the spacing between the two adjacent intermediate limit plates; when multiple battery cell clips 338 are squeezed, the moving distance of each second clip 3392 in the recess 3394 and the protrusion 3395 is greater than the moving distance of each battery cell clip 338, ensuring that when the battery cell 800 is squeezed, the two adjacent second clips 3392 do not contact each other.

[0063] See also Figure 4 As shown, in one embodiment of the present invention, the auxiliary rotating component 340 includes an auxiliary rotating cylinder 341 and a rotating shaft 342. The auxiliary rotating cylinder 341 is fixedly connected to the extrusion fixing plate 326. Its output end is fixedly connected to one end of the rotating shaft 342 via a coupling. The other end of the rotating shaft 342 is fixedly connected to the third rotating plate 3353. The auxiliary rotating cylinder 341 provides auxiliary power, which, in conjunction with the extrusion rotating motor 333, turns the flipping cell component 359 upside down after the extruded cell is inverted and then returns it to its normal position.

[0064] See also Figure 4As shown, in one embodiment of the present invention, the lifting component 350 includes a lifting member 351, a lifting cylinder 352, a limiting member 353, and a buffer 354. One end of the lifting member 351 is fixedly connected to a side surface of the lifting plate 322. The lifting cylinder 352 is fixedly located on the fixed plate 321. The output shaft of the lifting cylinder 352 passes through the fixed plate 321 and is fixedly connected to the other end of the lifting member 351. The limiting member 353 is fixedly located within the fixed plate 321. When the lifting cylinder 352 drives the lifting member 351 upward, it also drives the lifting plate 322 and the components fixed to the lifting plate 322 upward. When the bottom of the limiting member 353 contacts the lifting plate 322, the lifting cylinder 352 stops lifting. When the lifting cylinder 352 pushes the lifting member 351 downward, it also drives the lifting plate 322 and the components fixed to the lifting plate 322 downward. When the top of the stopper 353 contacts the lifting limit plate 324, the lifting cylinder 352 stops pushing the lifting member 351. The buffer 354 is located on one side of the lifting cylinder 352 and is fixedly connected to the fixing plate 321.

[0065] See also Figure 3 As shown, in one embodiment of the present invention, the detection device 360 ​​includes a pressure sensor 361 and a position sensor 362. The pressure sensor 361 is located between the second rotating plate 3352 and the third rotating plate 3353 and is fixedly connected to the second rotating plate 3352 to detect the pressure of the battery cells. The position sensor 362 is in communication with the auxiliary rotating cylinder 341 and is used to detect whether the auxiliary rotating cylinder 341 has rotated into position.

[0066] See also Figure 1 、 Figure 3 and Figure 4 As shown, in one embodiment of the present invention, a pair of reset members 370 are respectively located on either side of the fixed plate 321, with one end thereof fixedly connected to the fixed plate 321. When the battery cell tray 110 is transferred to the workstation of the extrusion assembly 300, the pair of reset members 370 are located directly above the lower pressing plate 1126. When the lifting cylinder 352 pushes the lifting member 351 downward, the pair of reset members 370 press the lower pressing plate 1126, and the middle limit plate 1122 moves downward to leave a space, so that the multiple battery cell clamps 338 are located in the space to extrude the battery cells 800. The extrusion assembly also includes an extrusion controller (not shown in the figure). The extrusion controller is in communication with the pushing cylinder 331, the extrusion rotation motor 333, the auxiliary rotation cylinder 341, the lifting cylinder 352, and the detection device 360, and controls the extrusion component 330, the auxiliary rotation component 340, and the lifting component 350 to complete the extrusion of the battery cells 800.

[0067] See also Figures 1 to 6As shown, in one embodiment of the present invention, when a battery cell 800 moves to the working position of the extrusion assembly 300, the lifting cylinder 352 pushes the lifting member 351 to move the lifting plate 322 downward. The reset member 370 presses the battery cell tray, so that the multiple battery cell clamps 338 are respectively positioned within two adjacent battery cells 800. The extrusion rotation motor 333 is activated, and the rotating telescopic rod 3341 rotates together through the coupling. The extrusion sliding plate 325 moves forward along the slide rail slider pair 327 by moving the bearing seat 334, causing the first rotating plate 3351 to be squeezed toward the second rotating plate 3352. The pressure sensor 361 detects the pressure at this time. At the same time, the rotating telescopic rod 3341 rotates forward and moves forward, causing the multiple battery cell clamps 338 to squeeze the battery cell 800. Lifting cylinder 352 drives lifting member 351 to move lifting plate 322 upward. When it reaches a certain height, auxiliary rotating cylinder 341 is activated, driving flipping cell component 359 to rotate together via rotating shaft 342 in the same direction as the extrusion rotating motor 333, inverting cell 800. This inversion is performed for a period of time while maintaining pressure. If any cell welds are unqualified, electrolyte will flow out of the welds when cell 800 is inverted, facilitating inspection in the next step. When the pressure maintenance of cell 800 is complete, extrusion rotating motor 333 is reversed, and auxiliary rotating cylinder 341 simultaneously maintains the same direction as extrusion rotating motor 333, returning the inverted cell 800 to the normal position. The auxiliary rotating cylinder 341 is then deactivated. Lifting cylinder 352 pushes lifting member 351 to move lifting plate 322 downward. Resetting member 370 presses on the cell tray, placing cell 800 inside. At the same time, the push cylinder 331 is activated. The output end of the push cylinder 331 pushes the push block 332, causing the extrusion slide plate 325 to slide backward. Simultaneously, the extrusion rotation motor 333 rotates in reverse, also causing the extrusion slide plate 325 to slide backward. The multiple cell clamps 338 are pulled apart by the latch 339, moving the multiple battery cells 800 to their original positions in the cell tray. The push cylinder 331 and the extrusion rotation motor 333 are deactivated. The lifting cylinder 352 drives the lifting member 351 to move the lifting plate 322 upward. At this point, the cell tray transfers the extruded battery cells 800 to the next station through the flow.

[0068] See also Figure 7 As shown, the present invention also provides a method for extruding a battery cell using a battery cell extrusion assembly, including the extrusion rotation device performing an extrusion step, a lifting step, a rotation and inversion step, a pressure holding step, a rotation and return step, a lowering step, and a reset step on the battery cell flowing below it, so that the battery cell returns to its original position after completing the extrusion and rotation. Specifically, it includes:

[0069] S1000, when the battery cell flows to the station of the battery cell extrusion assembly, the lifting cylinder pushes the lifting plate to move downward, so that the multiple battery cell clamping plates are placed in the battery cell tray.

[0070] S2000, starting the extrusion rotation motor to drive the rotating telescopic rod to rotate together, and the mobile bearing seat rotates to drive the extrusion sliding plate to move forward along the slide rail slider pair, so that the first rotating plate is squeezed toward the second rotating plate; at the same time, the rotating telescopic rod pushes the multiple battery cell clamping plates to squeeze the battery cells in the battery cell tray;

[0071] S3000, the lifting cylinder drives the lifting plate to move upward. When it rises to a certain height, the extrusion rotating motor and the auxiliary rotating component drive the flipping battery cell component to flip, so that the battery cell is inverted and pressure maintained for a certain period of time;

[0072] S4000, after the battery cell pressure maintenance is completed, the flipped battery cell component is returned to the normal position again by the extrusion rotation motor and the auxiliary rotation component;

[0073] S5000, closing the auxiliary rotating component, and the lifting cylinder pushes the lifting plate downward to place the battery cell in the battery cell tray;

[0074] S6000: Start the push electric cylinder to push the push block backward, and at the same time, move the extrusion sliding plate backward through the movable bearing seat, and use multiple buckles to pull the multiple battery cell clamping plates longitudinally apart in the battery cell tray;

[0075] S7000, turning off the pushing electric cylinder and the extrusion rotating motor, the lifting cylinder drives the lifting plate to move upward, and the battery cell after extrusion is located in the battery cell tray to be transferred to the next station.

[0076] Example 2

[0077] See also Figure 8 and Figure 9 As shown, the present invention also provides an automatic detection device for battery cell leakage, which uses an extrusion assembly 300. The automatic detection device for battery cell leakage includes: a circulation assembly 100 for circulating battery cell trays 110 and transferring them to various workstations, and a loading assembly 200, an extrusion assembly 300, a leakage detection assembly 400, and a discharge assembly 500, which are located next to the circulation assembly 100 in the process sequence. The extrusion assembly 300 includes an extrusion and rotation device composed of an extrusion component 330 and an auxiliary rotation component 340. The extrusion component 330 extrudes the battery cell 800, and the auxiliary rotation component 340 assists the extrusion component 330 in flipping the extruded inverted battery cell 800 180° and returning it to its original position.

[0078] See also Figure 10 and Figure 11As shown, in one embodiment of the present invention, a cell tray 110 includes a positioning plate 111 and multiple cell retaining devices 112. The multiple cell retaining devices 112 are located within and fixedly connected to the positioning plate 111. Notches 1111 are provided on both sides of the positioning plate 111 along the direction of flow of the cell tray 110. Positioning holes 1112 and retaining square holes 1113 are also provided within the positioning plate 111. In this embodiment, the multiple cell retaining devices 112 are, for example, three, including a first cell retaining device 112A, a second cell retaining device 112B, and a third cell retaining device 112C, each of which is sequentially fixed to the positioning plate 111. Each cell retaining device 112 includes a pair of side retaining plates 1121, multiple middle retaining plates 1122, a bottom plate 1123, a linear guide tube 1124, a spring rod 1125, a pair of lower pressure plates 1126, and a plurality of other components. A pair of side limiting plates 1121 are fixedly positioned on either side of the long side of the limiting square hole 1113, respectively. An intermediate limiting plate 1122 is located inside the pair of side limiting plates 1121, that is, inside the limiting square hole 1113. One end of the intermediate limiting plate 1122 is fixedly connected to the bottom plate 1123, and the distance between two adjacent intermediate limiting plates 1122 matches the thickness of the battery cell 800. A linear guide tube 1124 is located on the side of the pair of side limiting plates 1121 facing away from the limiting square hole 1113, and penetrates the positioning plate 111 and is fixedly connected thereto. For example, there are four linear guide tubes 1124, and they are located in groups of two on one side of the side limiting plate 1121. A wear-resistant sleeve 11241 is provided at one end of the linear guide tube 1124. The spring rod 1125 includes a spring 11251 and a guide rod 11252. The guide rod 11252 is located within the spring 11251. One end of the guide rod 11252 passes through the linear guide tube 1124 and is fixedly connected to the base plate 1123. The other end is fixedly connected to the lower pressure plate 1126. The spring 1151 is located between the lower pressure plate 1126 and the wear-resistant sleeve 11241. The lower pressure plate 1126 is "L" shaped. A pair of lower pressure plates 1126 are symmetrically located on both sides of the outer side of the side limit plate 1121, and the short sides of the lower pressure plates 1126 are arranged diagonally and the short sides of the lower pressure plates 1126 are away from the side limit plate 1121.

[0079] See also Figures 8 to 11As shown, in an embodiment provided by the present invention, specifically, multiple battery cells 800 are located in a pair of side limit plates 1121, and the distance between the pair of side limit plates 1121 matches the width of the battery cells 800. The multiple battery cells 800 are separated by the middle limit plate 1122. When the extrusion assembly 300 moves downward, the reset member 700 presses the lower pressure plate 1126, and the middle limit plate 1122 and the bottom plate 1123 move downward, leaving a gap between the multiple battery cells 800. The extrusion assembly 300 is located in the gap to extrude the multiple battery cells 800. After extrusion, the extrusion assembly 300 is lifted up again, and the reset member 700 releases the lower pressure plate 1126. At this time, under the action of the spring 11251, the middle limit plate 1122 and the bottom plate 1123 are lifted up to return to normal. After the extrusion assembly 300 is lifted, the multiple battery cells 800 are flipped 180° to one side to invert the multiple battery cells 800. After maintaining the pressure for a period of time, the extrusion assembly 300 flips the multiple battery cells 800 on the same side 180° to return the multiple battery cells 800 to the upright position. Finally, the extrusion assembly 300 moves downward with the multiple battery cells 800, resets the component 700 and presses the lower pressure plate 1126, and places the multiple battery cells 800 in the side limit plate 1121 again. Then, the multiple battery cells 800 are pulled apart through multiple buckles to be located in their original positions in the battery tray 110. The extrusion assembly 300 is lifted upward again to lift the middle limit plate 1122 and the bottom plate 1123 upward to separate the multiple battery cells 800. Under normal conditions of the battery tray 110, as shown in FIG. Figure 11 As shown in the first cell limiting device 112A and the third cell limiting device 112C, the cell tray 110 is pressed down, as shown in FIG. Figure 4 As shown in the second battery cell limiting device 112B.

[0080] See also Figure 1 、 2 and Figures 8 to 12 As shown, in one embodiment provided by the present invention, three battery cell limiting devices 112 are provided on the battery cell tray 110, and correspondingly, three groups of extrusion and rotation devices are sequentially provided on the supporting device 310, which are respectively used to extrude, invert and reset the battery cells 800 in the three battery cell limiting devices 112.

[0081] See also Figure 8 and Figure 9As shown, in one embodiment of the present invention, the circulation assembly 100 further includes a double-layered return line 122, which is fixedly connected to the ground via anchor connectors. The cell tray 110 circulates on the double-layered return line 122. The double-layered return line 122 is divided vertically into a top streamlined body 1221 and a bottom streamlined body 1222, with the top streamlined body 1221 located above the bottom streamlined body 1222. The double-layered return line 122 is divided according to the workstations of the process flow into a first double-layered return line 121, a second double-layered return line 122, and a third double-layered return line 123, which are sequentially arranged. The loading assembly 200 is located on one side of the first double-layered return line 121, the extrusion assembly 300 and the leak detection assembly 400 are located on either side of the second double-layered return line 122, and the unloading assembly 500 is located on one side of the third double-layered return line 123. The first double-layer return line 121 and the third double-layer return line 123 have the same structure and connection relationship. To simplify the description, this embodiment is described by taking the first double-layer return line 121 as an example.

[0082] See also Figure 8 and Figure 9 and Figure 12As shown, in one embodiment of the present invention, a first support frame 1211, a movable plate 1212, a transmission chain 1213, a drive motor 1214, and an elevator 1215 are provided on the first double-layer return line 121. The movable plate 1212 can slide on the first support frame 1211 through the elevator 1215. The transmission chain 1213 and the drive motor 1214 are located on one end surface of the movable plate 1212. The drive motor 1214 drives the transmission chain 1213, thereby driving the battery cell tray 110 to move rightward on the top streamlined body 1221. The elevator 1215 is fixedly connected to the other end surface of the movable plate 1212, driving the movable plate 1212 to move up and down on the first support frame 1211, thereby driving the empty battery cell tray 110 from which the battery cell 800 has been removed by the blanking assembly 500 to return to the second double-layer return line 122. Among them, the difference between the third double-layer return line 123 and the first double-layer return line 121 is that the third double-layer return line 123 drives the battery tray 110 to move to the left to the bottom streamline 1222. Specifically, the loading assembly 200 clamps the battery cell 800 from the battery cell frame and places it on the battery tray 110 above the first double-layer return line 121. The battery tray 110 loaded with the battery cell 800 is moved to the right on the top streamline 1221 through the first double-layer return line 121. The battery tray 110 loaded with the battery cell 800 passes through the extrusion assembly 300 and the leakage detection assembly 400 in turn and is transferred to the third double-layer return line 123. The unloading assembly 500 clamps the battery cell after pressurization and leakage detection from the battery tray 110 on the third double-layer return line 123. 800. After the unloading assembly 500 takes away the battery cell 800, the elevator 1215 of the third double-layer return line 123 drives the movable plate 1212 to move downward, and moves the empty battery cell tray 110 to the bottom streamlined body 1222 of the second double-layer return line 122. The empty battery cell tray 110 moves along the bottom streamlined body 1222 to the first double-layer return line 121, and moves upward through the lifting machine of the first double-layer return line 121. The battery cell 800 is clamped by the loading assembly 200 and placed on the empty battery cell tray 110, completing a cycle.

[0083] See also Figure 8 、 9 , 13 and Figure 14As shown, in one embodiment provided by the present invention, the flow assembly 100 also includes a workstation controller (not shown in the figure), and multiple stop mechanisms 130, multiple lifting and positioning mechanisms 140, multiple positioning sensors 150 and multiple downward pressure sensors 160 fixed on the double-layer return line 122 and located below the battery tray 110. Among them, the multiple stop mechanisms 130 and the second double-layer return line 122 are used to separate the workstations. The multiple lifting and positioning mechanisms 140 are respectively located at each workstation of the double-layer return line 122, and are used to accurately position the battery tray 110. The multiple positioning sensors 150 are respectively located on the side of the double-layer return line 122, and are used to detect the position of the battery tray 110. The multiple downward pressure sensors 160 are located on the side of each process position of the second double-layer return line 122, and are used to detect whether the lower pressure plate 1126 is pressed into place, and finally the middle limit plate 1122 and the bottom plate 1123 are moved downward to the standard position. The workstation controller is in communication with a plurality of stop mechanisms 130, a plurality of lifting and positioning mechanisms 140, a plurality of positioning sensors 150, and a plurality of pressing sensors 160. Each lifting and positioning mechanism 140 includes a first lifting plate 141, a second lifting plate 142, a telescopic rod 143, a positioning member 144, and a lifting cylinder 145. One end of the telescopic rod 143 is fixedly connected to one side of the first lifting plate 141, and the other end is fixedly connected to the second lifting plate 142. The positioning member 144 is fixedly located on the other side of the first lifting plate 141, and one side of the first lifting plate 141 is also fixedly connected to the output end of the lifting cylinder 145.

[0084] See also Figure 8 、 9 , 13 and Figure 14 As shown, in one embodiment provided by the present invention, when multiple positioning sensors 150 detect that the battery tray 110 has reached the process position, the station controller controls the stopping mechanism 130 to lift, so that the stopping mechanism 130 engages with the notch 1111 of the battery tray 110, restricting the battery tray 110 from continuing to flow to the next process position. The station controller also controls the lifting cylinder 145 to lift the first lifting plate 141 upward, indirectly lifting the battery tray 110 so that the positioning member 144 is located in the positioning hole 1112 of the battery tray 110. When this process task is completed, the station controller controls the stopping mechanism 130 to descend and the lifting cylinder 145 to retract so that the first lifting plate 141 descends, the positioning member 144 withdraws from the positioning hole 1112, and the battery tray 110 flows to the next process position.

[0085] See also Figure 8 、 9 and Figure 14As shown, in one embodiment provided by the present invention, the loading assembly 200 includes a loading clamp assembly 210 composed of a pneumatic device 211, a plurality of clamps 212 and a pneumatic controller 213. The plurality of clamps 212 are connected to the output end of the pneumatic device 211, and the pneumatic controller 213 is communicated with the pneumatic device 211 to control the on and off of the air circuit of the pneumatic device 211, thereby controlling the plurality of clamps 212 to clamp or release the battery cells at the same time.

[0086] See also Figure 8 、 9 and Figure 14 As shown, in one embodiment provided by the present invention, the loading assembly 200 further includes a loading mechanical shaft 220 consisting of a first loading mechanical shaft 221, a second loading mechanical shaft 222, and a third loading mechanical shaft 223. One end of the first loading mechanical shaft 221 is fixedly connected to the ground, and one end of the second loading mechanical shaft 222 is movably connected to the other end of the first loading mechanical shaft 221, allowing the second loading mechanical shaft 222 to rotate around the first loading mechanical shaft 221. One end of the third loading mechanical shaft 223 is movably connected to the other end of the second loading mechanical shaft 222, and the other end is movably connected to the pneumatic device 211, allowing the third loading mechanical shaft 223 to rotate around the second loading mechanical shaft 222, and the pneumatic device 211 to rotate around the third loading mechanical shaft 223. The loading jaw assembly 210 also includes a telescopic member 214, which is connected to the output end of the pneumatic device 211 and is located above the multiple jaws 212. The telescopic member 214 is also connected to the pneumatic controller 213. The telescopic member 214 does not affect the rotation of the multiple jaws 212 on the pneumatic device 211, and according to the control instructions of the pneumatic controller 213, the multiple jaws 212 move up and down at the output end of the pneumatic device 211. Insulating pads 2121 are also provided on the multiple jaws 212 to prevent the battery cells 800 from contacting metal and sparking. At the same time, the friction coefficient between the jaws 212 and the battery cells 800 is increased to ensure the clamping force between the jaws 212 and the battery cells 800, and to achieve flexible transportation of the battery cells 800 through the loading mechanical shaft 220.

[0087] See also Figure 8 、 9 and Figure 14As shown, in one embodiment of the present invention, the plurality of clamps 212 are moved to the top of the battery core material frame located on one side of the first double-layer return line body 121 by the loading mechanical shaft 220, the pneumatic controller 213 controls the plurality of clamps 212 to open, and the plurality of clamps 212 are moved down into the battery core material frame by the telescopic member 214, the pneumatic controller 213 controls the plurality of clamps 212 to clamp the battery core 800 at the same time, the telescopic member 214 then moves the plurality of clamps 212 upward, and the loading mechanical shaft 220 drives the loading assembly 200 moves to the top of the battery cell tray 110 above the first double-layer reflow line body 121, and moves the multiple jaws 212 downward through the telescopic part 214 to place the battery cell 800 in the battery cell limiting device 112. After the pneumatic controller 213 controls the multiple jaws 212 to release the battery cell 800 at the same time, the telescopic part 214 moves the multiple jaws 212 upward again, and the loading mechanical shaft 220 moves the multiple jaws 212 to above the battery cell material frame located on one side of the first double-layer reflow line body 121, and the cycle is repeated.

[0088] See also Figure 8 and Figure 9 As shown, in one embodiment provided by the present invention, the leak detection assembly 400 includes a fixed rod 410 and an optical detection member 420, the fixed rod 410 is fixed on both sides of the circulation assembly 100, the optical detection member 420 is located on the circulation assembly 100 and is fixedly connected to the fixed rod 410, and the battery cell 800 after extrusion is completed adopts an optical solution to perform online detection of electrolyte leakage at the battery cell weld and the injection port position, and identifies the difference in optical imaging of the battery cell 800 surface in a leaking state and a normal state without leakage, thereby judging the leakage of the battery cell 800 and realizing automatic detection of leakage. Specifically, the optical detection member 420 is a 2.5D camera, and the detection principle is: by controlling the light source to illuminate from different angles, a shadow image generated by the image concave and convex information is obtained, and finally a 3D information image is obtained by synthesizing and calculating. The leak detection assembly 400 also includes an information terminal (not shown in the figure), which is connected to the optical detection member 420 for communication, receives the detection information of the optical detection member 420, and judges whether multiple battery cells 800 meet the quality requirements.

[0089] See also Figure 8 and Figure 9 As shown, in one embodiment of the present invention, the automatic battery cell leakage detection device includes an NG component 600 and a safety protection component 700. The NG component 600 is located on one side of the unloading component 500. The safety protection component 700 is, for example, a protective net that surrounds the flow component 100, the loading component 200, the extrusion component 300, the leak detection component 400, the unloading component 500, and the NG component 600 to ensure the safety of the personnel. The safety protection component 700 is also, for example, a combination of a protective net and a safety door lock, an emergency stop switch, and a safety door lock.

[0090] See also Figure 8 and Figure 9 As shown, in one embodiment of the present invention, the unloading assembly 500 and the loading assembly 200 can be considered to be the same device, the only difference being that the pneumatic controller 213 of the unloading assembly 500 independently controls the air circuits of the multiple grippers 212. The pneumatic controller 213 of the unloading assembly 500 is in communication with the information terminal to obtain the information terminal's test results on the battery cells 800. The pneumatic controller 213 removes qualified battery cells 800 and places them in the battery cell rack, while unqualified battery cells are placed in the "NG" assembly 600.

[0091] See also Figure 8 and Figure 15 As shown, in one embodiment of the present invention, the NG assembly 600 includes an NG support base 610, a cell limiting device 620, and a full-fill sensor 630. The NG support base 610 is fixedly connected to the ground, and the cell limiting device 620 is fixedly connected to the NG support base 610, and is used to place the battery cells 800 that have been determined to be unqualified. The full-fill sensor 630 is fixedly connected to the NG support base 610 and is used to detect whether the cell limiting device 620 is in a full-fill state. When the cell limiting device 620 is in a full-fill state, the full-fill sensor 630 triggers an alarm signal to remind the staff to deal with these unqualified battery cells 800.

[0092] See also Figure 16 As shown, the present invention also provides another embodiment, a method for detecting a battery cell leakage using an automatic detection device, comprising the following steps:

[0093] S100, the loading assembly simultaneously clamps the plurality of battery cells and places them in a battery cell tray on the loading assembly;

[0094] S110, the battery cell tray drives the plurality of battery cells to be transferred to the extrusion assembly station through the transfer assembly;

[0095] S200, the extrusion rotating device moves downward, and the extrusion component is located in the battery cell tray to squeeze the battery cell;

[0096] S210, the extrusion rotating device and the extruded battery cell move upward;

[0097] S220, the squeezing component and the auxiliary rotating component turn the squeezed battery cell upside down for a certain period of time;

[0098] S230, the pressing component and the auxiliary rotating component flip the inverted battery cell back to an upright position again;

[0099] S240, the extrusion rotation device and the returned battery cell move downward;

[0100] S250, the extrusion component puts the returned battery cell back into the battery cell tray;

[0101] S260, the extrusion rotating device moves upward;

[0102] S300, the battery cell tray drives the plurality of battery cells after extrusion to be transferred to the leak detection component station through the transfer component;

[0103] S310, the leakage detection component performs online detection of electrolyte leakage on the plurality of battery cells after extrusion through an optical solution, and transmits the detection result to the blanking component;

[0104] S400, the battery cell tray drives the plurality of battery cells that have completed testing to be transferred to the unloading station through the transfer assembly;

[0105] S500: The unloading station controls and clamps each of the battery cells individually according to the detection result, and transports the multiple battery cells to different subsequent stations.

[0106] See also Figure 16 As shown, in another embodiment of the present invention, in step S200, the extrusion rotating device moves downward, the extrusion component is located in the battery cell tray, and the battery cell is extruded, further comprising:

[0107] The restoring member 370 presses the lower pressing plate 1126 , and the middle limiting plate 1122 moves downward, leaving a gap between two adjacent battery cells 800 . The extrusion component 330 is located in the gap to squeeze the multiple battery cells 800 .

[0108] See also Figure 16 As shown, in another embodiment of the present invention, in step S260, when the extrusion rotation device moves upward, the middle limit plate 1122 rebounds and rises due to the spring 11251 and is located in the interval again.

[0109] See also Figure 16 As shown, in one embodiment of the present invention, in step S310, the leakage detection component 400 performs online detection of electrolyte leakage on the multiple battery cells after extrusion through an optical solution, including: the optical detection component 420 identifies the difference between the optical imaging of the surface leakage state of the battery cell 800 and the normal state without leakage, and judges the leakage state of the battery cell 800 based on the difference.

[0110] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be embraced herein, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

[0111] The above-mentioned embodiments merely represent the implementation methods of the invention. The protection scope of the present invention is not limited to the above-mentioned embodiments. For those skilled in the art, several variations and improvements can be made without departing from the concept of the present invention, which all fall within the protection scope of the present invention.

Claims

1. A battery cell extrusion assembly, characterized in that: include: A support device (310) and an extrusion and rotation device, wherein the extrusion and rotation device is arranged on the support device (310) and is capable of extruding and rotating the battery cell (800) flowing below the extrusion and rotation device and restoring it to its original position; The extrusion rotation device includes a support component (320) mainly composed of a fixed plate (321), a lifting plate (322) and a plurality of linear bearings (323); the fixed plate (321) is fixedly connected to the support device (310); the lifting plate (322) is located below the fixed plate (321) in the support device (310); the two ends of the plurality of linear bearings (323) are respectively connected to the lifting plate (322) and the fixed plate (321); by providing a thrust or a pull force to the lifting plate (322), the lifting plate (322) and the fixed plate (321) can be moved relative to each other; The extrusion rotation device includes an extrusion component; the extrusion component also includes an extrusion rotation motor (333), a movable bearing seat (334) and a flipping electric core component (359); the movable bearing seat (334) is connected to the extrusion sliding plate (325); one end of the movable bearing seat (334) is fixedly connected to the output end of the extrusion rotation motor (333), and the other end is fixedly connected to the flipping electric core component (359); The flipping electric core component (359) includes a plurality of rotating plates (335) and at least two pairs of polished rods (337); the plurality of rotating plates (335) are connected to a movable bearing seat (334); when the movable bearing seat (334) rotates, the plurality of rotating plates (335) can be driven to rotate together; both ends of the polished rod (337) are fixedly connected to the rotating plates (335); when the plurality of rotating plates (335) are subjected to a thrust, the plurality of rotating plates (335) approach the extrusion fixed plate (326) in the supporting component (320); when the plurality of rotating plates (335) are subjected to a pulling force, the plurality of rotating plates (335) move away from the extrusion fixed plate (326).

2. The battery cell extrusion assembly according to claim 1, characterized in that: The supporting component (320) further comprises an extrusion sliding plate (325), an extrusion fixing plate (326) and a slide rail slider pair (327); one side of the slide rail slider pair (327) is fixedly located at one end of the lifting plate (322), and the other side thereof is fixedly connected to the extrusion sliding plate (325), so that the extrusion sliding plate (325) can slide on the lifting plate (322); the extrusion fixing plate (326) is fixedly connected to the other end of the lifting plate (322).

3. The battery cell extrusion assembly according to claim 2, characterized in that: The extrusion component mainly consists of a pushing electric cylinder (331) and a pushing block (332); the pushing electric cylinder (331) is fixedly connected to the lifting plate (322); the pushing block (332) is located at the output end of the pushing electric cylinder (331), and one end of the pushing block is fixedly connected to the extrusion sliding plate (325). When the output end of the pushing electric cylinder (331) extends, the pushing block (332) is pushed, and the extrusion sliding plate (325) can be moved backward along the slide rail slider pair (327).

4. The battery cell extrusion assembly according to claim 1, characterized in that: The flipping battery core component (359) further includes a plurality of battery core clamps (338), which are sleeved on the polished rod (337) and can slide on the polished rod (337); The other end of the movable bearing seat (334) is fixedly connected to the closest battery core clamping plate (338).

5. The battery cell extrusion assembly according to claim 4, characterized in that: The flip battery core component (359) further includes a plurality of buckles (339) mainly consisting of a first buckle (3391), a second buckle (3392) and a third buckle (3393) connected end to end in sequence; one end of the first buckle (3391) is fixedly connected to the battery core clamping plate (338) closest to the movable bearing seat (334), and the other end is open upward to form a recessed portion (3394); a groove (3396) is provided at the bottom of the recessed portion (3394), and the groove (3396) engages the battery core clamping plate (338); one end of the third buckle (3393) is connected to the rotating plate (335), and the other end is open downward to form a convex portion (3395); the second buckle (3392) is "S"-shaped and has both a recessed portion (3394) and a convex portion (3395).

6. The battery cell extrusion assembly according to claim 5, characterized in that: The design rules of the first width (b1) of the concave portion (3394) and the second width (b2) of the convex portion (3395) are as follows: when the plurality of battery cell clamps (338) are pulled apart, two adjacent second clips (3392) contact and restrict each other, so that the distance between the two adjacent battery cell clamps (338) is equal to the distance between the two adjacent middle limit plates; when the plurality of battery cell clamps (338) are squeezed, the moving distance of each second clip (3392) in the concave portion (3394) and the convex portion (3395) is greater than the moving distance of each battery cell clamp (338), so that when the battery cell (800) is squeezed, the two adjacent second clips (3392) do not contact each other.

7. The battery cell extrusion assembly according to claim 1, characterized in that: The extrusion rotation device further includes an auxiliary rotating component (340) consisting of an auxiliary rotating cylinder (341) and a rotating shaft (342). The auxiliary rotating cylinder (341) is fixedly connected to one end of the rotating shaft (342), and the other end of the rotating shaft (342) is connected to the rotating plate (335). The auxiliary rotating cylinder (341) provides auxiliary force for flipping the flipping battery core component (359).

8. The battery cell extrusion assembly according to claim 1, characterized in that: The extrusion rotation device further includes a reset member (370). A pair of reset members (370) are respectively located on both sides of the lifting plate (322), and one end of each reset member is fixedly connected to the lifting plate (322).

9. The battery cell extrusion assembly according to any one of claims 1 to 8, characterized in that: The extrusion rotation device further comprises a lifting component (350) consisting of a lifting member (351) and a lifting cylinder (352), wherein the lifting member (351) is fixedly connected to the lifting plate (322); The lifting cylinder (352) is fixedly connected to the fixed plate (321), and its output end is fixedly connected to the lifting member (351); the lifting plate (322) can be moved up and down by the lifting member (350).

10. A method for extruding a battery cell using the battery cell extrusion assembly according to any one of claims 1 to 9, characterized in that: include: The extrusion and rotation device transfers the battery cell (800) thereunder to the extrusion step, the lifting step, the rotation and inversion step, the pressure maintaining step, the rotation and returning step, the descending step, and the resetting step, so that the battery cell (800) returns to its original position after the extrusion and rotation are completed.

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