Composite lamination all-in-one machine and battery cell manufacturing method

Abstract

The invention relates to a compositing and laminating all-in-one machine and a battery cell manufacturing method, the compositing and laminating all-in-one machine comprises a workbench, and a pole piece compositing module, a laminating module and a battery cell blanking detection module which are sequentially mounted on the workbench, the pole piece compositing module composites a positive pole piece and a diaphragm to form a composite pole piece, and the laminating module laminates a negative pole piece and the composite pole piece to form a battery cell; specifically, the positive plate feeding mechanism provides positive plates, the carrying mechanical arm carries the positive plates to the deviation rectifying platform and the compounding mechanism in sequence, and the pole plate cutting mechanism adsorbs, cuts and separates the compounded pole plates. The composite pole piece secondary carrying mechanism carries the composite pole piece and the gasket to the lamination table, the laminated battery cell group enters the hot-pressing mechanism, the hot-pressing mechanism carries out hot-pressing bonding on the laminated battery cell group unit, and the gasket separating mechanism separates the hot-pressed battery cell group into the gasket and the battery cell, so that the integrated machine has the advantages of wide compatible range, high model changing speed, high efficiency and intelligence.

Description

Technical Field

[0002] The present invention relates to the field of lithium battery manufacturing, and particularly to a composite laminating integrated machine and a method for manufacturing battery cells. Background Art

[0003] At present, the laminating integrated machines on the market are mechanical devices used to laminate separators, gaskets, and electrodes to form battery cells. Existing laminators have problems such as many debugging points and complex equipment. Most laminating devices have problems such as large volume, narrow compatibility range, difficult debugging, and long changeover time. Therefore, there is an urgent need to develop a composite laminating integrated machine with a wide compatibility range, fast changeover speed, high efficiency, and intelligence. Summary of the Invention

[0004] In view of the above-mentioned defects in the prior art, the present invention provides a composite laminating integrated machine and a method for manufacturing battery cells. The specific technical solutions are as follows:

[0005] A composite laminating integrated machine includes a workbench and a pole piece composite module, a laminating module, and a battery cell blanking and detection module sequentially installed on the workbench. The pole piece composite module composites a positive pole piece and a separator to form a composite pole piece. The laminating module laminates a negative pole piece and the composite pole piece to form a battery cell. The battery cell blanking and detection module detects the battery cell and discharges it.

[0006] As a preferred embodiment of the present invention, the pole piece composite module includes a positive pole piece loading mechanism, a handling manipulator, a deviation rectifying platform, a composite mechanism, a buffer mechanism, a main drive feeding mechanism, a separator unwinding and deviation rectifying mechanism, a pole piece cutting mechanism, and a recycling mechanism. The positive pole piece loading mechanism provides the positive pole piece. The handling manipulator sequentially transports the positive pole piece to the deviation rectifying platform and the composite mechanism. The deviation rectifying platform positions the pole piece through visual photography. The separator unwinding and deviation rectifying mechanism unwinds the separator to the composite mechanism. The composite mechanism composites and thermally presses the rectified pole piece and separator to form a composite pole piece. The buffer mechanism caches the composite pole piece. The main drive feeding mechanism drives the feeding of the composite pole piece. The pole piece cutting mechanism adsorbs and cuts the composite pole piece for separation. The waste separator after cutting is recycled through the recycling mechanism.

[0007] As a preferred embodiment of the present invention, the composite mechanism is divided into a primary composite mechanism and a secondary composite mechanism. The separator unwinding and deviation rectifying mechanism is divided into an upper separator unwinding and deviation rectifying mechanism and a lower separator unwinding and deviation rectifying mechanism. The lower separator unwinding and deviation rectifying mechanism unwinds the lower separator to the primary composite mechanism. The primary composite mechanism composites and thermally presses the lower separator and the pole piece. Then the upper separator unwinding and deviation rectifying mechanism unwinds the upper separator to the secondary composite mechanism. The secondary composite mechanism composites and thermally presses the upper separator and the pole piece.

[0008] As a preferred embodiment of the present invention, the lamination module includes a composite electrode sheet primary handling robot, a composite electrode sheet alignment platform, a spacer feeding mechanism, a composite electrode sheet secondary handling mechanism, a lamination table, a negative electrode sheet feeding mechanism, a negative electrode sheet primary handling robot, a negative electrode sheet alignment platform, and a negative electrode sheet secondary handling robot. The primary handling robot transports the cut composite electrode sheet to the composite electrode sheet alignment platform. The composite electrode sheet alignment platform corrects and adjusts the composite electrode sheet. The composite electrode sheet secondary handling mechanism transports the composite electrode sheet and the spacer to the lamination table. The negative electrode sheet primary handling robot transports the negative electrode sheet in the negative electrode sheet feeding mechanism to the negative electrode sheet alignment platform. The negative electrode sheet alignment platform corrects and adjusts the negative electrode sheet. The negative electrode sheet secondary handling robot transports the aligned negative electrode sheet to the lamination table.

[0009] As a preferred embodiment of the present invention, the lamination table includes a base, a left clamping jaw device, and a right clamping jaw device. The left clamping jaw device is installed on the left side of the base, and the right clamping jaw device is installed on the right side of the base. The left clamping jaw device and the right clamping jaw device have the same structure. The right clamping jaw device includes a motor eccentric drive mechanism, a motor screw lifting mechanism, and a clamping jaw assembly. The motor eccentric drive mechanism drives the clamping jaw assembly to move horizontally, and the motor screw lifting mechanism drives the clamping jaw assembly to move up and down.

[0010] As a preferred embodiment of the present invention, the motor eccentric drive mechanism includes a first motor, a driving small gear, a gear eccentric wheel, a link mechanism, and a linear slide rail. The output shaft of the first motor is installed with the driving small gear. The first motor transmits power to the gear eccentric wheel through the driving small gear. The rotation of the gear eccentric wheel drives the link mechanism to swing. The upper part of the link mechanism is connected to the clamping jaw assembly. The clamping jaw assembly is slidably connected to the linear slide rail, and the linear slide rail is horizontally installed.

[0011] As a preferred embodiment of the present invention, the link mechanism includes a crank, a connecting plate, a sliding seat, and a swinging plate. The eccentric shaft of the gear eccentric wheel is installed with the crank. The upper part of the crank is connected to the connecting plate. The back of the connecting plate is slidably connected to the sliding seat. Both sides of the connecting plate are connected to the swinging plate, and the swinging plate is connected to the clamping jaw assembly.

[0012] As a preferred embodiment of the present invention, the battery cell discharging and detecting module includes a hot pressing mechanism, a spacer separating mechanism, a discharging and handling robot, a gluing mechanism, a Hi-Pot thickness measuring mechanism, and an appearance detecting mechanism. The stacked battery cell group enters the hot pressing mechanism. The hot pressing mechanism hot-presses and bonds the stacked battery cell units. The spacer separating mechanism separates the hot-pressed battery cell group into a spacer and a battery cell. The spacer is transported to the spacer recycling box by the discharging and handling robot. The separated battery cell is transported to the gluing mechanism by the discharging and handling robot for gluing. The glued battery cell reaches the Hi-Pot thickness measuring mechanism for detection. The detected battery cell is transported to the appearance detecting mechanism by the discharging and handling robot for discharging and detection.

[0013] A method for manufacturing an electric core, which is made by using the above-mentioned composite laminating integrated machine, includes the following steps: ① The positive electrode sheet feeding mechanism provides a positive electrode sheet, and the handling manipulator sequentially transports the positive electrode sheet to the rectifying platform and the composite mechanism. The rectifying platform corrects and positions the electrode sheet through visual photography, and the composite mechanism composites and thermally presses the rectified electrode sheet and the separator to form a composite electrode sheet; ② The buffer mechanism buffers the composite pole piece, The electrode sheet cutting mechanism adsorbs and cuts the composite electrode sheet for separation, and the waste separator after cutting is recycled through the recycling mechanism; ③ The first-level handling manipulator transports the cut composite electrode sheet to the composite electrode sheet rectifying platform. The composite electrode sheet rectifying platform corrects and positions the composite electrode sheet through visual photography, and the second-level composite electrode sheet handling mechanism transports the composite electrode sheet and the gasket to the laminating table; ④ The first-level negative electrode sheet handling manipulator transports the negative electrode sheet in the negative electrode sheet feeding mechanism to the negative electrode sheet rectifying platform. The negative electrode sheet rectifying platform corrects and adjusts the negative electrode sheet, and the second-level negative electrode sheet handling manipulator transports the rectified negative electrode sheet to the laminating table; ⑤ The laminating table stacks the composite electrode sheet and the negative electrode sheet into an electric core group; ⑥ The stacked electric core group enters the hot pressing mechanism. The hot pressing mechanism hot presses and bonds the stacked electric core group units. The gasket separating mechanism separates the hot-pressed electric core group into a gasket and an electric core. The gasket is transported to the gasket recycling box through the blanking handling manipulator, and the separated electric core is transported to the gluing mechanism through the blanking handling manipulator for gluing. The glued electric core reaches the Hi-Pot thickness measuring mechanism for detection, and the detected electric core is transported to the appearance inspection mechanism through the blanking handling manipulator for inspection and blanking.

[0014] Beneficial effects: The composite laminating integrated machine and the method for manufacturing an electric core of the present invention are reasonably and ingeniously designed. The electrode sheet composite module composites the positive electrode sheet and the separator to form a composite electrode sheet, and the laminating module laminates the negative electrode sheet and the composite electrode sheet to form an electric core. The electric core blanking and detection module detects and blanks the electric core. Specifically, the positive electrode sheet feeding mechanism provides a positive electrode sheet, and the handling manipulator sequentially transports the positive electrode sheet to the rectifying platform and the composite mechanism ， The electrode sheet cutting mechanism adsorbs and cuts the composite electrode sheet for separation, and the waste separator after cutting is recycled through the recycling mechanism. The first-level handling manipulator transports the cut composite electrode sheet to the composite electrode sheet rectifying platform. The second-level composite electrode sheet handling mechanism transports the composite electrode sheet and the gasket to the laminating table. The laminating table stacks the composite electrode sheet and the negative electrode sheet into an electric core group. The stacked electric core group enters the hot pressing mechanism. The hot pressing mechanism hot presses and bonds the stacked electric core group units. The gasket separating mechanism separates the hot-pressed electric core group into a gasket and an electric core. The gasket is transported to the gasket recycling box through the blanking handling manipulator, and the separated electric core is transported to the gluing mechanism through the blanking handling manipulator for gluing. The glued electric core reaches the Hi-Pot thickness measuring mechanism for detection, and the detected electric core is transported to the appearance inspection mechanism through the blanking handling manipulator for inspection and blanking, which has the advantages of wide compatibility range, fast die change speed, high efficiency and intelligence. Description of the Drawings

[0015] Figure 1 is the overall three-dimensional view of the present invention;

[0016] Figure 2 is the top view of the present invention;

[0017] Figure 3 is the flowchart of the present invention;

[0018] Figure 4 is the three-dimensional view of the lamination table of the present invention;

[0019] Figure 5 is the exploded view of the lamination table of the present invention;

[0020] Figure 6 is the three-dimensional view of the right pressing jaw device of the lamination table of the present invention;

[0021] Figure 7 is the three-dimensional view of the motor screw lifting mechanism of the lamination table of the present invention. Detailed Embodiments

[0022] The following further describes the detailed embodiments of the present invention with reference to the accompanying drawings:

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Such as Figure 1-3As shown in the figure, a composite laminating machine includes a workbench 1 and a pole piece composite module A, a laminating module B, and a battery cell blanking and detection module C that are sequentially installed on the workbench. The pole piece composite module A is at the rear side, the laminating module B is at the left side, and the battery cell blanking and detection module C is at the front side. The pole piece composite module A composites the positive pole piece and the separator to form a composite pole piece. The laminating module B laminates the negative pole piece and the composite pole piece to form a battery cell. The battery cell blanking and detection module C detects the battery cell and discharges it.

[0026] Specifically, the pole piece composite module A includes a positive pole piece loading mechanism 2, a handling robot 3, a rectifying platform 4, a composite mechanism 5, a buffer mechanism 6, a main drive feeding mechanism 7, a separator unwinding and rectifying mechanism 8, a pole piece cutting mechanism 9, and a recycling mechanism 10. The positive pole piece loading mechanism 2 provides the positive pole piece. The handling robot 3 sequentially transports the positive pole piece to the rectifying platform 4 and the composite mechanism 5. The rectifying platform 4 positions the pole piece through visual photography. The separator unwinding and rectifying mechanism 8 unwinds the separator to the composite mechanism 5. The composite mechanism 5 composites and thermally presses the rectified pole piece and the separator to form a composite pole piece. The buffer mechanism 6 buffers the composite pole piece. The main drive feeding mechanism 7 drives the feeding of the composite pole piece. The pole piece cutting mechanism 9 adsorbs and cuts the composite pole piece for separation. The waste separator after cutting is recycled through the recycling mechanism 10. The composite mechanism is divided into a primary composite mechanism and a secondary composite mechanism. The separator unwinding and rectifying mechanism is divided into an upper separator unwinding and rectifying mechanism and a lower separator unwinding and rectifying mechanism. The lower separator unwinding and rectifying mechanism unwinds the lower separator to the primary composite mechanism. The primary composite mechanism composites and thermally presses the lower separator and the pole piece. Then the upper separator unwinding and rectifying mechanism unwinds the upper separator to the secondary composite mechanism. The secondary composite mechanism composites and thermally presses the upper separator and the pole piece.

[0027] Specifically, the laminating module B includes a composite pole piece primary handling robot 11, a composite pole piece rectifying platform 12, a gasket loading mechanism 13, a composite pole piece secondary handling mechanism 14, a laminating table 15, a negative pole piece loading mechanism 16, a negative pole piece primary handling robot 17, a negative pole piece rectifying platform 18, and a negative pole piece secondary handling robot 19. The primary handling robot 11 transports the cut composite pole piece to the composite pole piece rectifying platform 12. The composite pole piece rectifying platform 12 rectifies and adjusts the composite pole piece. The composite pole piece secondary handling mechanism 14 transports the composite pole piece and the gasket to the laminating table 15. The negative pole piece primary handling robot 17 transports the negative pole piece in the negative pole piece loading mechanism 16 to the negative pole piece rectifying platform 18. The negative pole piece rectifying platform 18 rectifies and adjusts the negative pole piece. The negative pole piece secondary handling robot 19 transports the rectified negative pole piece to the laminating table 15.

[0028] As Figure 4-7As shown in the figure, the lamination table 15 includes a base 151, a left clamping jaw device 152 and a right clamping jaw device 153. The left clamping jaw device 152 is installed on the left side of the base 151, and the right clamping jaw device 153 is installed on the right side of the base 151. The left clamping jaw device 152 and the right clamping jaw device 153 have the same structure, that is, the components they are composed of and the cooperation relationship between the components are the same. The right clamping jaw device 153 includes a motor eccentric drive mechanism 1531, a motor screw lifting mechanism 1532 and a clamping jaw assembly 1533. The motor eccentric drive mechanism 1531 drives the clamping jaw assembly 1533 to move horizontally, and the motor screw lifting mechanism 1532 drives the clamping jaw assembly 1533 to move up and down.

[0029] The motor eccentric drive mechanism includes a first motor 15311, a driving pinion 15312, a gear eccentric wheel 15313, a linkage mechanism and a linear slide rail 15315. The output shaft of the first motor is installed with the driving pinion 15312. The first motor 15311 transmits power to the gear eccentric wheel 15313 through the driving pinion 15312. The rotation of the gear eccentric wheel 15313 drives the linkage mechanism to swing. The linkage mechanism includes a crank 15316, a connecting plate 15317, a sliding seat 15318 and a swing plate 15319. The eccentric shaft of the gear eccentric wheel 15313 is installed with the crank 15316. The crank 15316 is connected to the connecting plate 15317 above. The back of the connecting plate 15317 is slidably connected to the sliding seat 15318. Both sides of the connecting plate 15317 are connected to the swing plate 15319. The swing plate 15319 is connected to the clamping jaw assembly 1533. The linkage mechanism is connected to the clamping jaw assembly 1533 above. The clamping jaw assembly 1533 is slidably connected to the linear slide rail 15315. The linear slide rail 15315 is horizontally installed. The rotation of the gear eccentric wheel 15313 causes the crank 15316 to move. The crank 15316 drives the swing plate 15319 to swing through the connecting plate 15317. Since the linear slide rail 15315 is horizontally installed, the clamping jaw assembly 1533 moves horizontally.

[0030] The motor screw lifting mechanism 1532 includes a second motor 15321, a screw 15322, a nut and a lifting connection block 15324. The second motor 15321 drives the screw 15322 to rotate. The screw 15322 is threadedly connected to the nut. The nut is installed inside the lifting connection block 15324. The lifting connection block 15324 is connected to the clamping jaw assembly 1533 above.

[0031] The pressing jaw assembly 1533 includes a front sliding seat 15331, a front air cylinder 15332, a front pressing jaw 15333, a rear sliding seat 15334, a rear air cylinder 15335, and a rear pressing jaw 15336. The front sliding seat 15331 and the rear sliding seat 15334 are slidably connected to the linear slide rail 15315. The swing plates 15319 on both sides are respectively connected to the front sliding seat 15331 and the rear sliding seat 15334. The linear slide rail 15315 is installed on the cross plate 15320. Vertical plates are installed at the bottoms on both sides of the cross plate 15320. The vertical plates are slidably connected to the base 151. The lifting connection block 15324 is connected to the middle of the cross plate 15320. The front air cylinder 15332 is installed on the side of the front sliding seat 15331. The front air cylinder 15332 drives the front pressing jaw 15333 to press down on the electrode sheet. The rear air cylinder 15335 is installed on the side of the rear sliding seat 15334. The rear air cylinder 15335 drives the rear pressing jaw 15336 to press down on the electrode sheet. Pressure regulating valves 154 for adjusting the pressing jaw pressure are installed around the base 151.

[0032] Specifically, the battery cell blanking and inspection module C includes a hot pressing mechanism 20, a gasket separation mechanism 21, a blanking handling manipulator 22, a glue pasting mechanism 23, a Hi-Pot thickness measurement mechanism 24, and an appearance inspection mechanism 25. The stacked battery cell group enters the hot pressing mechanism 20. The hot pressing mechanism 20 performs hot pressing and bonding on the stacked battery cell units. Preferably, there are 2 hot pressing mechanisms 20. The gasket separation mechanism 21 separates the battery cell group after hot pressing into gaskets and battery cells. The gaskets are transported to the gasket recycling box by the blanking handling manipulator 22. The separated battery cells are transported by the blanking handling manipulator 22 to the glue pasting mechanism 23 for glue pasting. The battery cells after glue pasting reach the Hi-Pot thickness measurement mechanism 24 for inspection. The inspected battery cells are transported by the blanking handling manipulator 22 to the appearance inspection mechanism 25 for inspection and blanking.

[0033] A battery cell manufacturing method is made using the above-mentioned composite laminating integrated machine, and includes the following steps: ① The positive electrode sheet feeding mechanism provides positive electrode sheets. The handling manipulator sequentially transports the positive electrode sheets to the alignment platform and the composite mechanism. The alignment platform performs alignment adjustment and positioning on the electrode sheet through visual photography. The composite mechanism performs composite hot pressing on the aligned electrode sheet and the separator to form a composite electrode sheet; ② The buffer mechanism buffers the composite pole piece,The electrode cutting mechanism adsorbs, cuts and separates the composite electrode, and the waste diaphragm after cutting is recycled by the recycling mechanism; ③ The first-level handling robot transports the cut composite electrode to the composite electrode correction platform, and the composite electrode correction platform corrects and adjusts the composite electrode through visual photography. The composite electrode secondary handling mechanism transports the composite electrode and the gasket to the stacking table; ④ The negative electrode first-level handling robot transports the negative electrode in the negative electrode feeding mechanism to the negative electrode correction platform, and the negative electrode correction platform corrects and adjusts the negative electrode, and the negative electrode secondary handling hand transfers the negative electrode after correction. The electrode sheets are transported to the stacking table; ⑤ The stacking table stacks the composite electrode sheets and negative electrode sheets into a cell group; ⑥ The stacked cell group enters the hot pressing mechanism, and the hot pressing mechanism performs hot pressing and bonding on the stacked cell group units. The gasket separation mechanism separates the hot-pressed cell group into gaskets and cells. The gaskets are transported to the gasket recovery box by the unloading and handling robot. The separated cells are sent to the gluing mechanism for gluing by the unloading and handling robot. The cells with gluing are sent to the Hi-Pot thickness measuring mechanism for inspection. The inspected cells are transported to the appearance inspection mechanism for inspection and unloading by the unloading and handling robot.

[0034] The above content is a further detailed description of the present invention in combination with specific preferred implementation modes. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A composite lamination machine, characterized in that: It includes a workbench and a pole piece composite module, a stacking module, and a battery cell unloading detection module which are sequentially installed on the workbench. The pole piece composite module combines the positive pole piece and the diaphragm to form a composite pole piece. The stacking module stacks the negative pole piece and the composite pole piece to form a battery cell. The battery cell unloading detection module detects and unloads the battery cell.

2. The composite lamination machine according to claim 1, characterized in that: The electrode composite module includes a positive electrode loading mechanism, a handling robot, a correction platform, a composite mechanism, a cache mechanism, a main drive feeding mechanism, a diaphragm unwinding correction mechanism, a electrode cutting mechanism and a recycling mechanism. The positive electrode loading mechanism provides positive electrode sheets, the handling robot transports the positive electrode sheets to the correction platform and the composite mechanism in sequence, the correction platform positions the electrode sheets by visual photography, the diaphragm unwinding correction mechanism unwinds the diaphragm to the composite mechanism, the composite mechanism performs composite hot pressing on the corrected electrode sheet and the diaphragm to form a composite electrode sheet, the cache mechanism caches the composite electrode sheet, the main drive feeding mechanism drives the composite electrode sheet to be fed, the electrode cutting mechanism adsorbs and cuts and separates the composite electrode sheet, and the cut waste diaphragm is recycled by the recycling mechanism.

3. The composite lamination machine according to claim 2, characterized in that: The composite mechanism is divided into a primary composite mechanism and a secondary composite mechanism, the diaphragm unwinding and correcting mechanism is divided into an upper diaphragm unwinding and correcting mechanism and an upper diaphragm unwinding and correcting mechanism, the lower diaphragm unwinding and correcting mechanism unwinds the lower diaphragm to the primary composite mechanism, the primary composite mechanism performs composite hot pressing on the lower diaphragm and the pole piece, and then the upper diaphragm unwinding and correcting mechanism unwinds the upper diaphragm to the secondary composite mechanism, and the secondary composite mechanism performs composite hot pressing on the upper diaphragm and the pole piece.

4. The composite lamination machine according to claim 2, characterized in that: The stacking module includes a primary handling robot for composite electrode sheets, a composite electrode sheet correction platform, a gasket feeding mechanism, a secondary handling mechanism for composite electrode sheets, a stacking platform, a negative electrode sheet feeding mechanism, a primary handling robot for negative electrode sheets, a negative electrode sheet correction platform and a secondary handling robot for negative electrode sheets. The primary handling robot transports the cut composite electrode sheets to the composite electrode sheet correction platform, the composite electrode sheet correction platform corrects and adjusts the composite electrode sheets, the secondary handling mechanism for composite electrode sheets transports the composite electrode sheets and gaskets to the stacking platform, the primary handling robot for negative electrode sheets transports the negative electrode sheets in the negative electrode sheet feeding mechanism to the negative electrode sheet correction platform, the negative electrode sheet correction platform corrects and adjusts the negative electrode sheets, and the secondary handling robot for negative electrode sheets transports the corrected negative electrode sheets to the stacking platform.

5. The composite lamination machine according to claim 4, characterized in that: The lamination table includes a base, a left pressure claw device and a right pressure claw device. The left pressure claw device is installed on the left side of the base, and the right pressure claw device is installed on the right side of the base. The left pressure claw device and the right pressure claw device have the same structure. The right pressure claw device includes an eccentric transmission mechanism of a motor, a motor screw lifting mechanism and a pressure claw assembly. The eccentric transmission mechanism of the motor drives the pressure claw assembly to move horizontally, and the motor screw lifting mechanism drives the pressure claw assembly to move up and down.

6. The composite lamination machine according to claim 5, characterized in that: The motor eccentric transmission mechanism includes a first motor, a driving pinion, a gear eccentric wheel, a connecting rod mechanism and a linear slide rail. The driving pinion is installed on the output shaft of the first motor. The first motor transmits power to the gear eccentric wheel through the driving pinion. The rotation of the gear eccentric wheel drives the connecting rod mechanism to swing. The top of the connecting rod mechanism is connected to a pressure claw assembly. The pressure claw assembly is slidably connected to the linear slide rail, and the linear slide rail is installed horizontally.

7. The composite lamination integrated machine according to claim 5, characterized in that: The connecting rod mechanism includes a crank, a connecting plate, a slide and a swing plate. The crank is installed on the eccentric shaft of the gear eccentric wheel. The top of the crank is connected to the connecting plate. The back of the connecting plate is slidably connected to the slide. Both sides of the connecting plate are connected to the swing plate, and the swing plate is connected to the pressure claw assembly.

8. The composite lamination machine according to claim 1, characterized in that: The battery cell unloading detection module includes a hot pressing mechanism, a gasket separation mechanism, a unloading and handling robot, a gluing mechanism, a Hi-Pot thickness measuring mechanism and an appearance inspection mechanism. The stacked battery cell group enters the hot pressing mechanism. The hot pressing mechanism performs hot pressing and bonding on the stacked battery cell group units. The gasket separation mechanism separates the hot-pressed battery cell group into gaskets and batteries. The gaskets are transported to a gasket recovery box by the unloading and handling robot. The separated batteries are sent to the gluing mechanism by the unloading and handling robot for gluing. The batteries that have been glued arrive at the Hi-Pot thickness measuring mechanism for inspection. The inspected batteries are transported to the appearance inspection mechanism by the unloading and handling robot for inspection and unloading.

9. A method for manufacturing a battery cell, characterized in that: The composite lamination integrated machine is made by using any one of claims 1-8, comprising the following steps: ① the positive electrode sheet feeding mechanism provides the positive electrode sheet, the handling robot sequentially carries the positive electrode sheet to the deviation correction platform and the composite mechanism, the deviation correction platform corrects and adjusts the electrode sheet by visual photography, and the composite mechanism composites and hot-presses the corrected electrode sheet and the diaphragm to form a composite electrode sheet; ② The cache mechanism caches the composite pole piece. The electrode cutting mechanism adsorbs, cuts and separates the composite electrode, and the waste diaphragm after cutting is recycled by the recycling mechanism; ③ The first-level handling robot transports the cut composite electrode to the composite electrode correction platform, and the composite electrode correction platform corrects and adjusts the composite electrode through visual photography. The composite electrode secondary handling mechanism transports the composite electrode and the gasket to the stacking table; ④ The negative electrode first-level handling robot transports the negative electrode in the negative electrode feeding mechanism to the negative electrode correction platform, and the negative electrode correction platform corrects and adjusts the negative electrode, and the negative electrode secondary handling hand transfers the negative electrode after correction. The electrode sheets are transported to the stacking table; ⑤ The stacking table stacks the composite electrode sheets and negative electrode sheets into a cell group; ⑥ The stacked cell group enters the hot pressing mechanism, and the hot pressing mechanism performs hot pressing and bonding on the stacked cell group units. The gasket separation mechanism separates the hot-pressed cell group into gaskets and cells. The gaskets are transported to the gasket recovery box by the unloading and handling robot. The separated cells are sent to the gluing mechanism for gluing by the unloading and handling robot. The cells with gluing are sent to the Hi-Pot thickness measuring mechanism for inspection. The inspected cells are transported to the appearance inspection mechanism for inspection and unloading by the unloading and handling robot.

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