An integrated device for die-cutting and laminating electric cores and a method for controlling the device

Abstract

The present invention relates to the technical field of battery cell production equipment, and in particular to an integrated battery cell die-cutting and lamination equipment and an equipment control method. A frame is provided, and an unwinding device is provided on the frame, the unwinding device includes an unwinding assembly and a roller assembly, and the roller assembly rolls the material roll pulled out by the unwinding assembly at a first matching speed; at the same time, a die-cutting device is also provided on the frame, and the die-cutting device is provided on the frame and adjacent to the unwinding device, and is used to die-cut the unwinding device roll at a second matching speed to form positive and negative electrodes; at the same time, a laminating device is provided, and the laminating device is provided adjacent to the die-cutting device, and is used to stack the positive and negative electrodes at intervals to form a laminated battery cell; the first matching speed and the second matching speed can be adjusted and adapted according to the laminating speed, thereby realizing that when the number of laminating devices changes, other devices of the equipment can cooperate and adjust to improve the utilization rate of the laminating devices, thereby improving the overall production speed of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell production equipment, and in particular to a battery cell die-cutting and lamination integrated equipment and an equipment control method. Background Art

[0002] With the development of society, the manufacturing industry has increasingly higher requirements for safety, efficiency and high quality. At present, the lithium battery manufacturing industry uses die-cutting and laminating machines to manufacture lithium battery cells, which usually combine the functions of unwinding, die-cutting and laminating.

[0003] Existing die-cutting and laminating machines typically feature multiple functional devices, such as unwinding, slicing, and laminating. While increasing laminating speed is often achieved by installing multiple laminating devices, the structural limitations of the other functional devices in the die-cutting and laminating machine often prevent the desired speed increase from the laminating devices. Furthermore, the independent control of pre-process devices, such as the unwinding and slicing devices, prevents the speeds of the various functional devices from being fully matched, affecting the upper limit of the laminating speed and limiting the overall production speed of the equipment. Summary of the Invention

[0004] In order to solve the above problems, the present invention proposes an integrated battery core die-cutting and lamination equipment and an equipment control method. The equipment adjusts the first matching speed and the second matching speed so that when the number of lamination devices increases, other devices of the equipment can increase the speed to match the speed increase brought by multiple lamination devices.

[0005] The above objectives are achieved through the following technical solutions:

[0006] In a first aspect, the present invention provides an integrated device for die-cutting and laminating a battery core, comprising:

[0007] frame;

[0008] An unwinding device is provided on the frame, and the unwinding device includes an unwinding assembly and a roller assembly, and the roller assembly rolls the material roll pulled out by the unwinding assembly at a first matching speed;

[0009] A die-cutting device is provided on the frame and adjacent to the unwinding device, and is used to die-cut the unwinding device roll at a second matching speed to form positive electrode sheets and negative electrode sheets;

[0010] and at least one laminating device, disposed adjacent to the die-cutting device, for stacking the positive electrode sheets and the negative electrode sheets at intervals to form a laminated battery core;

[0011] The first matching speed and the second matching speed are adjusted according to the stacking speed.

[0012] A frame is set up, and a unwinding device is set up on the frame, the unwinding device includes an unwinding component and a roller component, and the roller component rolls the material roll pulled out by the unwinding component at a first matching speed; at the same time, a die-cutting device is also provided on the frame, and the die-cutting device is set on the frame and adjacent to the unwinding device, and is used to die-cut the material roll of the unwinding device at a second matching speed to form positive and negative electrodes; at the same time, a stacking device is set up, and the stacking device is adjacent to the die-cutting device, and is used to stack the positive and negative electrodes at intervals to form stacked battery cells; the first matching speed and the second matching speed can be adjusted and adapted according to the stacking speed, so that when the stacking speed changes due to a change in the number of stacking devices, other devices of the equipment can cooperate and adjust to improve the utilization rate of the stacking device, thereby improving the overall production speed of the equipment.

[0013] In some embodiments, the partition assembly is located on the tape path of the electrode, and the tape path of the electrode is divided by the partition assembly to form a first tension control section and a second tension control section; the first tension control section is located between the unwinding assembly and the partition assembly; the second tension control section is located between the partition assembly and the die-cutting device;

[0014] The tension control component is respectively arranged in the first tension control section and the second tension control section, and adjusts the pole piece tension in the first tension control section and the second tension control section in sections.

[0015] The partition component and the tension control component adjust the first tension control end and the second tension control end respectively to reduce the fluctuation of the pole piece belt path, improve the problem of belt path jitter, and improve the control response speed and tension control accuracy of the tension control component to adapt to the faster pole piece tape speed. At the same time, it can also improve the first matching speed.

[0016] In some embodiments, the roller assembly includes a direction-changing roller, a tension roller, and a traction roller;

[0017] The direction-changing roller is used to change the direction of the belt path, the traction roller is used to stabilize and pull the belt path, and the tension roller is used to cooperate with the tension control component to control the tension.

[0018] By changing the number of direction-changing rollers, tension rollers, and traction rollers, the belt speed can be increased, thereby increasing the first matching speed. When multiple stacking devices are implemented, the material roll speed can be increased by adjusting the number of rollers to adapt to multiple stacking devices.

[0019] In some embodiments, the die-cutting device is further provided with a first conveyor belt, so that the positive electrode sheet and the negative electrode sheet pass through the first conveyor belt, are transported from the unwinding device to the laminating device through the die-cutting device, and the die-cutting mechanism is provided at the outlet of the unwinding device to cut the material tape conveyed by the unwinding device into electrode sheets; a defective product screening mechanism is provided at the outlet of the die-cutting mechanism to screen defective electrode sheets after cutting;

[0020] A second conveyor belt is provided on both sides of the stacking device to transport the positive and negative electrodes. The second conveyor belt is provided with multiple sections and the number is determined according to the number of stacking devices; each section of the second conveyor belt is provided with an independent control motor for control to realize segmented transmission.

[0021] The die-cutting device cuts the material strip unwound by the unwinding device into electrodes, and screens the defective products through the defective product screening mechanism to transfer the normal positive and negative electrodes to the stacking device for stacking. The speed of the first conveyor belt can be used to match the second matching speed, and the stacking speed of multiple sections of the second conveyor belt can be controlled and adjusted, which is also beneficial to maximize the speed of the stacking device.

[0022] In some embodiments, the die-cutting mechanism includes a die-cutting assembly;

[0023] The die-cutting assembly is mounted on the first conveyor belt and is arranged near the outlet of the unwinding device. The die-cutting assembly fixes the die-cutting motor so that the die-cutting motor can cut the material belt.

[0024] By setting the die-cutting motor and adjusting the speed of the die-cutting motor, the second matching speed can be adjusted.

[0025] In some embodiments, the defective product screening mechanism includes a detection component and a defective product screening component; the detection component and the defective product screening component are arranged in sequence along the transmission direction of the first conveyor belt;

[0026] The detection assembly includes a detection component, which is mounted on the upper surface of the first conveyor belt by a detection bracket to detect defective pole pieces;

[0027] The defective product screening component is arranged at the lower part of the first conveyor belt; the first conveyor belt is provided with a screening port, and the defective product screening component is provided with a positive pressure cylinder, and the air outlet of the positive pressure cylinder is arranged above the screening port to blow the defective products into the screening port.

[0028] The detection component is used to detect defective products and cooperate with the defective product screening component to screen defective products. The second matching speed can be adjusted by changing the detection speed; the defective product screening component can realize the kicking of defective products by blowing the detected defective products into the screening port.

[0029] In some embodiments, the first conveyor belt and the second conveyor belt further include:

[0030] A vacuum table is provided with a vacuum chamber for forming a negative pressure environment, and a vacuum hole is opened on the vacuum table opposite to the channel;

[0031] An air regulating pipe for gas circulation is provided in the vacuum chamber, one end of the air regulating pipe is connected to a plurality of vacuum holes, and the other end of the air regulating pipe is provided with an air suction port connected to the vacuum chamber;

[0032] Among them, the air regulating duct is provided with a vacuum flow control component at the air suction port, and the vacuum flow control component controls the gas flow at the air suction port by adjusting the opening size of the air suction port.

[0033] By adjusting the opening size of the suction port to control the gas flow at the suction port, the transmission of different pole pieces can be adapted to improve the stability of the vacuum transmission of the pole pieces.

[0034] In some embodiments, the lamination device includes a first lamination device and / or a second lamination device; the first lamination device is arranged in a direction according to the pole piece transmission direction, and the second lamination device is arranged in a direction opposite to the pole piece transmission direction.

[0035] The stacking device is divided into a first stacking device and a second stacking device. By mirroring the first stacking device and the second stacking device, the equipment can have a maintenance channel, and the positive and negative electrodes are arranged on both sides of the stacking device, which can reduce the stroke required to grab the electrodes on the same side.

[0036] In some embodiments, a lamination assembly includes a diaphragm assembly, a pole piece suction assembly, and a lamination assembly;

[0037] The diaphragm assembly is used to stretch the diaphragm; the stacking assembly is used to correct and stack the positive and negative electrode sheets; the electrode sheet suction assembly is provided with a first displacement assembly, a second displacement assembly, and an adsorption assembly; the adsorption assembly is arranged to move on the first displacement assembly, and the first displacement assembly is arranged to move on the second displacement assembly, the first displacement assembly moves horizontally, and the second displacement assembly moves vertically;

[0038] The positive and negative electrodes are sucked by the electrode suction assembly through lateral and longitudinal movement, and the diaphragm is deformed by the electrode suction assembly through lateral movement, so that the positive and negative electrodes are separated and fitted on the stacking assembly through the diaphragm.

[0039] The stacking device stacks the positive and negative stacks of the battery cell through the diaphragm assembly, the stacking suction assembly, and the stacking assembly. The stacking speed can be increased by adjusting the speed of each component of the stacking device, thereby improving the production efficiency of the production equipment.

[0040] In some embodiments, a second conveyor belt is provided on both sides of the stacking device. The second conveyor belt is provided with multiple sections and the number is determined according to the number of stacking devices. Each section of the second conveyor belt is provided with an independent control motor for control to achieve segmented transmission.

[0041] The second conveyor belt is provided with multiple sections corresponding to different stacking device settings. The stacking speed of the stacking device and the speed of the second conveyor belt are adjusted by the first matching speed and the second matching speed to adapt to the first matching speed and the second matching speed, thereby maximizing the efficiency of utilizing the stacking speed of the stacking device.

[0042] In a second aspect, the present invention provides an equipment debugging method for producing battery cells on the battery cell die-cutting and lamination integrated equipment as provided in any one of the first aspects, characterized in that the method comprises:

[0043] Obtaining a first matching speed of the unwinding device, a second matching speed of the die-cutting device, and a maximum stacking speed of a single stacking device;

[0044] determining the number of lamination devices according to the relationship among the first matching speed, the second matching speed and the maximum lamination speed;

[0045] The stacking speed of the overall stacking device is determined according to the number of stacking devices, and the first matching speed and the second matching speed are adjusted according to the stacking speed.

[0046] The beneficial effects of the integrated device for die-cutting and laminating of electric cores and the device control method of the present invention are:

[0047] A frame is set up, and a unwinding device is set up on the frame, the unwinding device includes an unwinding component and a roller component, the roller component rolls the material roll pulled out by the unwinding component at a first matching speed; at the same time, a die-cutting device is also provided on the frame, the die-cutting device is set on the frame and adjacent to the unwinding device, and is used to die-cut the material roll of the unwinding device at a second matching speed to form positive and negative electrodes; at the same time, a stacking device is set up, the stacking device is adjacent to the die-cutting device, and is used to stack the positive and negative electrodes at intervals to form stacked battery cells; the first matching speed and the second matching speed can be adjusted and adapted according to the stacking speed, thereby realizing that when the number of stacking devices changes, other devices of the equipment can cooperate and adjust to improve the utilization rate of the stacking devices, thereby improving the overall production speed of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a front view of the integrated device for die-cutting and laminating battery cells according to the present invention;

[0049] Figure 2 It is a front view of the unwinding device of the battery core die-cutting and lamination integrated equipment of the present invention;

[0050] Figure 3 It is a front view of the die-cutting device of the integrated device for die-cutting and laminating the battery core of the present invention;

[0051] Figure 4 It is a front view of the lamination device of the integrated equipment for die-cutting and lamination of battery cores of the present invention;

[0052] Figure 5 It is an isometric view of the first lamination device and the second lamination device of the battery core die-cutting and lamination integration equipment of the present invention;

[0053] Figure 6 This is a structural diagram of the internal vacuum structure of the first conveyor belt and the second conveyor belt of the battery core die-cutting and lamination integrated equipment of the present invention;

[0054] Figure 7 is a flow chart of the device control method of the present invention;

[0055] Figure 8 The figure is a flow chart of the battery cell production method of the present invention.

[0056] Reference numerals:

[0057] 100, rack;

[0058] 200, unwinding device; 210, partition assembly; 220, tension control assembly; 230, unwinding assembly; 240, roller assembly; 250, first tension control section; 260, second tension control section;

[0059] 300, die-cutting device; 310, die-cutting mechanism; 320, defective product screening mechanism; 330, first conveyor belt;

[0060] 400, lamination device; 410, first lamination device; 420, second lamination device; 430, second conveyor belt; 440, diaphragm assembly; 450, pole piece suction assembly; 460, lamination assembly; 500, vacuum table; 510, vacuum chamber; 520, air regulating pipe; 530, air suction port. DETAILED DESCRIPTION

[0061] It should be noted that, unless there is a conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other, and the detailed description in the specific implementation methods should be understood as an explanation of the purpose of the present invention and should not be regarded as an improper limitation on the present invention.

[0062] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the specific technical solutions of the present invention will be described in further detail below in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0063] In the embodiments of the present invention, 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 defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, unless otherwise specified, "plurality" means two or more.

[0064] In addition, in the embodiments of the present invention, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0065] In the embodiments of the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0066] In the embodiments of the present invention, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0067] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant information in a specific manner.

[0068] Example 1:

[0069] like Figure 1 As shown, the present invention proposes an integrated device for die-cutting and laminating a battery core, comprising:

[0070] Rack 100;

[0071] The unwinding device 200 is provided on the frame 100 and includes an unwinding assembly 230 and a roller assembly 240. The roller assembly 240 rolls the material roll pulled out by the unwinding assembly 230 at a first matching speed.

[0072] The die-cutting device 300 is provided on the frame 100 and adjacent to the unwinding device 200, and is used to die-cut the material roll of the unwinding device 200 at a second matching speed to form positive and negative electrode sheets;

[0073] and at least one laminating device 400, disposed adjacent to the die-cutting device 300, for stacking the positive and negative electrode sheets in intervals to form a laminated battery cell;

[0074] The lamination speed matches the first matching speed and the second matching speed.

[0075] Specifically, the equipment rack 100 is set, in some preferred embodiments, such as Figure 1As shown, the rack 100 is respectively provided with two transmission spaces, or two transmission channels, so as to realize the separate transmission of the positive electrode sheet and the negative electrode sheet without interfering with each other. In some more preferred embodiments, the positive electrode sheet and the negative electrode sheet are arranged on both sides of the rack 100 for transmission, so as to realize the transmission of the two electrode sheets without interfering with each other. This method can also have the beneficial effect that, by arranging the positive electrode sheet and the negative electrode sheet on both sides of the rack 100, a maintenance channel is left in the middle to facilitate manual equipment maintenance and equipment inspection. Furthermore, the positive electrode sheet and negative electrode sheet channels arranged on both sides can also make the center of gravity of the relevant device lower, because when on the same side, the positive and negative electrode sheet unwinding devices 200 are generally arranged up and down to save space, so the discharge port of the electrode sheet roll is also raised, and the center of gravity of other devices also needs to be raised to adapt, which will make the equipment unstable. Therefore, a lower center of gravity can make the equipment run more stable, and it can also avoid the need to set up an escalator for inspection during inspection. It is conceivable that the positive electrode sheet and the negative electrode sheet can be arranged on the same side for parallel transmission at the same time, which makes it more convenient to inspect the electrode sheet operation. A reeling device 200 is also provided. The reeling device 200 is arranged on the frame 100 and is located at the initial end of the transmission of the positive electrode sheet and the negative electrode sheet, and is used to release the electrode sheet roll. The reeling device 200 is usually provided with a reeling assembly 230 and a roller assembly 240, wherein the roller assembly 240 is used to lead the material strip in the reeling assembly 230 to the outlet of the reeling device. Adjusting the number of rollers in the roller assembly 240, the length of the material strip between the rollers, the position of the rollers, etc. will increase the transmission speed of the material strip. The transmission speed of the material strip has a greater improvement on the first matching speed. Therefore, the first matching speed can be improved by adjusting the roller assembly 240, thereby achieving adaptation to the subsequent lamination device 400. A die-cutting device 300 is also provided. This device is used to cut the roll of material into stackable electrodes. The die-cutting device 300 can increase the die-cutting speed to achieve a higher second matching speed, thereby aligning with the speed increase of multiple stacking devices 400, further increasing the overall cell production speed. At least one stacking device 400 is provided. Generally speaking, the more stacking devices 400 there are, the faster the stacking speed and the faster the electrode consumption. Therefore, different numbers of stacking devices 400 require different matching speeds for the preceding devices. Furthermore, if the preceding devices of a stacking device 400 all output electrodes at a uniform matching speed, if there are too many stacking devices 400, the output electrode speed will be insufficient, causing the subsequent stacking devices 400 to stagnate and the speed of some stacking devices 400 to be incompletely utilized. If there are too few stacking devices 400, the output electrode speed of the preceding devices will be too high, resulting in an incomplete utilization of the speed of the preceding devices, resulting in a waste of resources.Therefore, the flexibly adjustable unwinding device can further adjust the first matching speed through the roller assembly and the unwinding assembly, and adjust the second matching speed through the die-cutting device, so as to adapt to the stacking speeds generated by different numbers of stacking devices 400 to avoid speed mismatch caused by independent adjustment between devices, and reasonable speed allocation can also improve the operating speed of the overall equipment.

[0076] In some preferred uses, two stacking devices 400 can be used, and the two stacking devices 400 can be managed modularly. According to the stacking speeds of the two stacking devices 400, the first matching speed and the second matching speed are adjusted to achieve matching of the stacking speed, the first matching speed, and the second matching speed, thereby achieving overall speed matching of the equipment.

[0077] By setting up a frame 100 and setting up a unwinding device 200 on the frame 100, the unwinding device 200 includes an unwinding component 230 and a roller component 240, and the roller component 240 rolls the material roll pulled out by the unwinding component 230 at a first matching speed; at the same time, a die-cutting device 300 is also provided on the frame 100, and the die-cutting device 300 is set on the frame 100 and adjacent to the unwinding device 200, and is used to die-cut the material roll of the unwinding device 200 at a second matching speed to form positive and negative electrode sheets; at the same time, a stacking device 400 is set, and the stacking device 400 is adjacent to the die-cutting device 300, and is used to stack the positive and negative electrode sheets at intervals to form stacked battery cells; the stacking speed can be adjusted and adapted according to the first matching speed and the second matching speed, thereby achieving that when the number of stacking devices 400 changes, other devices of the equipment can cooperate to adjust to improve the utilization rate of the stacking device 400, thereby improving the overall production speed of the equipment.

[0078] Example 2:

[0079] like Figures 2 to 5 As shown, based on Example 1, this embodiment further illustrates and optimizes the device proposed in Example 1.

[0080] In some embodiments, the partition assembly 210 is located on the tape path of the electrode, and the tape path of the electrode is divided by the partition assembly 210 to form a first tension control section 250 and a second tension control section 260; the first tension control section 250 is located between the unwinding assembly 230 and the partition assembly 210; the second tension control section 260 is located between the partition assembly 210 and the die-cutting device 300;

[0081] The tension control component 220 is respectively disposed in the first tension control section 250 and the second tension control section 260 , and adjusts the pole piece tension in the first tension control section 250 and the second tension control section 260 in sections.

[0082] Specifically, the partition assembly 210 is positioned along the electrode path. The partition assembly 210, positioned along the electrode roll path, creates tension on the electrode while conveying it. The electrode path is divided by the partition assembly 210 into a first tension control section 250 and a second tension control section 260. This approach allows tension adjustment and control by controlling different tension sections, thereby reducing fluctuations in the electrode path. More specifically, the first tension control section 250 can be located upstream of the roll path, while the second tension control section 260 can be located downstream. In a preferred embodiment, multiple groups of partition assemblies 210 can be provided, spaced apart along the electrode path. This allows a longer electrode path to be divided into multiple groups of first and second tension control sections 250, 260, facilitating tension adjustment and control in the electrode path, reducing fluctuations in the electrode path, and thereby increasing electrode path speed.

[0083] The tension control assembly 220 is respectively provided in the first tension control section 250 and the second tension control section 260 to adjust the tension of the electrode in the first tension control section 250 and the second tension control section 260 in sections. In a preferred embodiment, the material roll assembly includes an unwinding roller, and the material roll is passed through the unwinding roller to unwind the electrode. The first tension control section 250 is located between the partition assembly 210 and the material roll assembly, and the downstream of the electrode unwinding device 200 is connected to the die-cutting device 300. The second tension control section 260 is located between the partition assembly 210 and the die-cutting device 300.

[0084] The beneficial effect of this embodiment is that the partition component 210 and the tension control component 220 respectively adjust the first tension control end and the second tension control end to reduce the fluctuation of the pole piece belt path, improve the problem of belt path jitter, and improve the control response speed and tension control accuracy of the tension control component 220. It can adapt to the faster pole piece tape speed and at the same time, it can also cooperate to adjust the first matching speed.

[0085] In some embodiments, the roller assembly includes a direction-changing roller, a tension roller, and a traction roller;

[0086] The direction-changing roller is used to change the direction of the belt path, the traction roller is used to stabilize and pull the belt path, and the tension roller is used to cooperate with the tension control component 220 to control the tension.

[0087] Specifically, the reversing roller is used to realize forward and reverse installation and prevent mistakes. At the same time, it can also play the role of reversing the material belt when installing double rollers. In the present invention, the reversing roller can also improve the overall stability of the material belt, and can also achieve the improvement of the first matching speed through fewer reversing rollers; the tension roller is used to install tension sensors and tension swing rollers. Through the setting of the tension roller, the tension tightness of the material belt can be achieved. The tightness of the material belt during operation can also improve the first matching speed. The looser the material belt, the greater the loss of running speed. Conversely, the loss is small, but the material belt is too tight, which puts more pressure on the material belt and reduces the overall stability of the material belt. The traction roller can prevent the diaphragm from shaking due to excessive length, and an auxiliary traction motor can be installed. The position, number and motor power of the traction roller are set to achieve the improvement of the first matching speed to adapt to the speed increase of multiple stacking devices 200, thereby improving the speed of the entire equipment.

[0088] In some preferred embodiments, it is optimal to set 6 to 10 rollers. This method can keep the material strip between the rollers less than 300 mm. The shorter material strip between the rollers can effectively increase the corresponding speed and reduce the tension fluctuation of the material strip during transmission.

[0089] The beneficial effect of this method is that by changing the number of direction-changing rollers, tension rollers, and traction rollers, the speed of the belt can be adjusted, thereby increasing the first matching speed, thereby increasing the material roll speed of the unwinding device 200, achieving an increase in the first matching speed, and further increasing the production speed of the equipment.

[0090] In some embodiments, specifically, a first conveyor belt 330 is provided to transport the positive electrode sheets and the negative electrode sheets. One end of the first conveyor belt 330 is connected to the outlet of the unwinding device 200, and the other end is connected to the inlet of the stacking device 400. The die-cutting mechanism 310 and the defective product screening mechanism 320 are sequentially arranged along the transport direction of the first conveyor belt 330.

[0091] A second conveyor belt 430 is provided on both sides of the stacking device 400 to transport the positive and negative electrodes. The second conveyor belt 430 is provided with multiple sections and the number is determined according to the number of stacking devices 400; each section of the second conveyor belt 430 is provided with an independent control motor for control to achieve segmented transmission.

[0092] Specifically, each first stacking device 410 and second stacking device 420 is provided with a second conveyor belt 430 on both sides, and the second conveyor belts 430 on both sides respectively transport the positive electrode sheets and the negative electrode sheets, and the adjacent second conveyor belts 430 are connected so that the entire stacking device 400 section can be connected end to end to form a complete segmented-controlled conveyor belt. Through segmented control, the speed of different stacking devices is controlled. Optionally, the speeds of multiple stacking devices 400 can be proportionally distributed according to the overall stacking speed. For example, the speed of the second conveyor belt 430 corresponding to the stacking device 400 close to the electrode input port is set according to the maximum speed of a single stacking device, and the speed of the second conveyor belt 430 corresponding to the stacking device 400 farther away from the electrode input port can be attenuated according to a certain proportion, so that the sum of multiple stacking devices 400 is the required stacking speed. This method can also achieve the most reasonable operation of the equipment and improve the equipment operation speed.

[0093] At the same time, the second conveyor belt 430 is provided with multiple sections corresponding to different stacking devices 400. By adjusting the stacking speed of the stacking device 400 and the speed of the second conveyor belt 430, the stacking speed can be matched according to the first matching speed and the second matching speed.

[0094] Furthermore, a first conveyor belt 330 is provided for transporting the electrode from the unwinding device 200, and enters the laminating device 400 after being processed by the die-cutting device 300. The second matching speed can be determined by the mechanisms in the die-cutting device 300, such as the speed of the first conveyor belt 330, the die-cutting speed, and the defective product screening speed. It can be imagined that the faster the speed of the first conveyor belt 330, the faster the electrode is transported, and the faster the die-cutting speed, the faster the speed of forming the electrode, and the faster the defective product screening speed is, the faster the electrode speed output to the laminating device 400 is. Therefore, the second matching speed can be improved through the above-mentioned mechanisms, and it can also adapt to the speed increase of multiple laminating devices 400. The die-cutting device 300 and the unwinding device 200 can match the speed, rather than adjusting them independently, thereby achieving the speed increase of the equipment.

[0095] The die-cutting device 300 cuts the material strip unwound by the unwinding device 200 into electrodes, and screens the defective products through the defective product screening mechanism 320 to transfer the normal positive and negative electrodes to the stacking device 400 for stacking. By increasing the speed of the first conveyor belt, the second matching speed can also be increased, thereby achieving an increase in the production speed of the entire equipment.

[0096] In some embodiments, the die-cutting mechanism 310 includes a die-cutting assembly;

[0097] The die-cutting assembly is mounted on the first conveyor belt 330 and is disposed near the exit of the unwinding device 200 . The die-cutting assembly fixes the die-cutting motor so that the die-cutting motor can cut the material belt.

[0098] Specifically, the die-cutting motor is arranged at the outlet of the unwinding device 200. The die-cutting motor drives the blade arranged on the die-cutting motor with a certain power to cut the material roll. Generally speaking, the greater the power of the die-cutting motor, the faster the cutting. The high-power die-cutting motor can make the conveying speed of the first conveyor belt 330 faster while also increasing the unwinding speed of the unwinding device 200, thereby increasing the first matching speed, and also increasing the second matching speed of the die-cutting mechanism 310, so as to achieve stacking speed matching of multiple stacking devices 400.

[0099] In some embodiments, specifically, the defective product screening mechanism 320 includes a detection component and a defective product screening component; the detection component and the defective product screening component are arranged in sequence along the transmission direction of the first conveyor belt 330;

[0100] The detection assembly includes a detection component, which is mounted on the upper surface of the first conveyor belt 330 by a detection bracket, and the detection port of the detection component faces the upper surface of the first conveyor belt 330; the defective product screening assembly is arranged at the lower part of the first conveyor belt 330; the first conveyor belt 330 is provided with a screening port, and the defective product screening assembly is provided with a positive pressure cylinder, and the air outlet of the positive pressure cylinder is arranged above the screening port to blow defective products into the screening port.

[0101] Furthermore, the detection component primarily detects whether the electrode sheets cut by the die-cutting assembly contain defective products, such as those with abnormal cutting or reversed electrode sheets, to facilitate subsequent screening and rejection of defective products. Specifically, the mechanism for achieving this effect can preferably be a visual sensor such as a CCD, camera, or infrared detector, but can also be a color sensor, touch sensor, or stroke-related sensor. After defective products are detected, they are screened and rejected by the defective product screening component. After defective products are detected, they are removed from the first conveyor belt 330. This effect can be achieved by providing a reversible screening port on the first conveyor belt 330. This screening port is normally closed on the first conveyor belt 330 and transports the electrode sheets. After defective products are detected, a positive pressure cylinder located above the screening port is activated. The positive pressure cylinder's air outlet is located above the screening port. The positive pressure air discharged by the positive pressure cylinder causes the defective products to be blown below the first conveyor belt 330 when the screening port is opened. Furthermore, a negative pressure cylinder is installed below the screening port to open and close it. A waste chamber is also provided at the bottom of the screening port to collect defective products into the waste chamber for subsequent recycling. This structure enables high-speed discharge of defective products by switching between positive and negative pressure, thereby increasing the second matching speed.

[0102] By setting up a detection component for detecting defective products, it is used to cooperate with the defective product screening component to screen defective products, thereby improving the second matching speed; at the same time, by screening defective products through the above-mentioned structure and method, compared with the existing grasping-type defective product screening mechanism, that is, the method of grabbing and removing defective products by a robot, the method in this embodiment is faster and more efficient, and the structure is simpler and takes up less space.

[0103] In some embodiments, the positive electrode sheet and the negative electrode sheet are arranged on both sides of the lamination device 400 for transmission, so that the lamination device 400 can obtain the positive electrode sheet and the negative electrode sheet;

[0104] The lamination device 400 includes a first lamination device 410 and / or a second lamination device 420; the first lamination device 410 is arranged in the direction of pole piece transmission, and the second lamination device 420 is arranged in the direction opposite to the pole piece transmission direction.

[0105] Furthermore, in a preferred embodiment, Figure 4 The illustrated method of transporting the positive and negative electrodes is to place them on either side of the laminating device 400. This method enables the positive and negative electrodes to be transported separately to either side of the laminating device 400, allowing the laminating device 400 to retrieve the positive and negative electrodes from both sides and stack them within the laminating device 400. Optionally, the positive and negative electrodes can be transported on the same side. Conversely, transporting them on the same side will increase the retrieval time when the laminating device 400 retrieves the outer electrodes, thereby slowing down the laminating speed. A first laminating device 410 and a second laminating device 420 are provided simultaneously. The two laminating devices 400 are arranged in opposite directions to form a mirrored pair of first and second laminating devices 410, 420. The mirrored pairs of first and second laminating devices 410, 420 can form a maintenance passage between adjacent laminating devices 400. This maintenance passage allows for maintenance while also providing space for personnel to conduct in-depth equipment inspections.

[0106] More preferably, the device has two stacking devices 400, that is, two sets of mirror-image settings of the first stacking device 410 and the second stacking device 420, thereby forming a device structure similar to four stacks, and a maintenance channel is left between the adjacent stacking devices 400 for maintenance. The beneficial effect of setting the stacking devices 400 with this number is that by forming a four-stack device structure, a higher stacking speed and efficiency can be achieved. At the same time, a maintenance channel will be left between the stacking devices 400. Through the maintenance channel, the operator can check the operation of other devices and equipment inside the equipment from the channel. Compared with fully enclosed equipment, this method can be more convenient for maintenance and maintenance of equipment. And the four stacks can increase the speed of a single stacking device 400, which can reach 0.3-0.35s / pcs. Therefore, the preceding equipment needs to increase the first matching speed and the second matching speed to match the increased stacking speed to achieve an overall speed increase.

[0107] The stacking device 400 is divided into a first stacking device 410 and a second stacking device 420. The mirror-image arrangement of the first stacking device 410 and the second stacking device 420 can provide a maintenance channel for easy maintenance, and the positive and negative electrodes are arranged on both sides of the stacking device 400, which can reduce the stroke required to grab the electrodes on the same side.

[0108] In some embodiments, specifically, the lamination device 400 includes a diaphragm assembly 440 , a pole piece suction assembly 450 , and a lamination assembly 460 .

[0109] The stacking assembly 460 is provided with a stacking base, and the stacking table is provided with a straightening table and a stacking table. The stacking table is provided in the middle of the stacking base for stacking the positive and negative electrodes; the straightening tables are provided on both sides of the stacking table for straightening the positive and negative electrodes; the diaphragm assembly 440 is provided on the stacking table to pull the diaphragm for separating the positive and negative electrodes, and the diaphragm assembly 440 is also provided with a swing roller, which swings the diaphragm through the swing of the swing roller to achieve separate patching of the positive and negative electrodes; the electrode suction assembly 450 includes a first direction displacement assembly, a second direction displacement assembly, and an adsorption assembly; the adsorption assembly is provided on the first direction displacement assembly and moves in a first direction, and the first direction displacement assembly is provided on the second direction displacement assembly and moves in a second direction. The first direction is the lateral movement between the positive electrode channel and the negative electrode channel, and the second direction is the up and down movement. The first direction displacement assembly and the second direction displacement assembly are used to enable the adsorption assembly to obtain the positive and negative electrodes and perform patching.

[0110] Furthermore, the lamination assembly 460 is provided with a lamination base, and the lamination base is provided with a straightening table and a lamination table. The straightening table is used for regular adjustment during lamination, and can be a UWV straightening table. By setting a transverse motor and a rotary motor in different directions, multi-directional transverse fine-tuning and rotation can be achieved. At the same time, a diaphragm assembly 440 is provided on the lamination table. The diaphragm assembly 440 can lift the diaphragm on the lamination assembly 460 so that during lamination, the positive and negative electrodes are separated and stacked by the diaphragm through a "z"-shaped lamination method. In order to further cooperate with lamination, the lamination table has a lifting function to cooperate with the height change caused by the stacking of the electrodes. To complete the absorption of the positive and negative electrodes, the electrode absorption assembly 450 needs to have a first direction of movement, that is, transverse movement between the positive and negative electrode conveyor belts. At the same time, it is also necessary to have a second direction of transverse movement, that is, up and down movement. The first direction displacement assembly and the second direction displacement assembly can be moved by means of guide rails plus motors, screw rods, clamping blocks, etc., and the guide rails or screw rods, belts and other components that provide displacement of the first direction displacement assembly and the second direction displacement assembly are perpendicular to each other to provide movement in two directions.

[0111] By stacking the positive and negative stacks of the battery cells through the diaphragm assembly 440, the stacking suction assembly, and the stacking assembly 460 in the stacking device 400, the stacking speed can be further improved by adjusting the speed of each component of the stacking device 400, thereby improving the overall production speed of the equipment.

[0112] Example 3:

[0113] like Figure 6 As shown, based on Example 1 and Example 2, this embodiment further illustrates and optimizes the first conveyor belt 330 and the second conveyor belt 430 mentioned in Example 2.

[0114] In some embodiments, the first conveyor belt 330 and the second conveyor belt 430 further include:

[0115] The vacuum table 500 has a vacuum chamber 510 for forming a negative pressure environment, and a vacuum hole opposite to the channel is opened on the vacuum table 500;

[0116] An air regulating pipe 520 for gas circulation is provided in the vacuum chamber 510. One end of the air regulating pipe 520 is connected to a plurality of vacuum holes, and the other end of the air regulating pipe 520 is provided with an air suction port 530 connected to the vacuum chamber 510.

[0117] The air regulating pipe 520 is provided with a vacuum flow control component at the air suction port 530 , and the vacuum flow control component controls the gas flow at the air suction port 530 by adjusting the opening size of the air suction port 530 .

[0118] Specifically, the first conveyor belt 330 and the second conveyor belt 430 are provided with a vacuum table 500, an air regulating pipe 520 is provided in the vacuum tire, and a vacuum flow control component for adjusting the vacuum flow is provided on the air regulating pipe 520. The vacuum table 500 is provided with a belt for conveying pole pieces, and a vacuum component for sucking the gas in the vacuum chamber 510. The beneficial effect of this structure is that by adjusting the vacuum flow control component, the belt can stably transmit pole pieces of different sizes or different transmission speeds, thereby adapting to faster pole piece transmission efficiency, which is conducive to improving the overall production speed.

[0119] An air intake port 530 is provided at one end of the air regulating duct 520 away from the vacuum plate. Specifically, the air intake port 530 is a rectangular opening. When vacuuming, the gas flowing in the air regulating duct 520 is extracted at the air intake port 530, forming a negative pressure environment in the air regulating duct 520. In an alternative embodiment, the air intake port 530 is not of the shape described above, and those skilled in the art may make a replacement based on this. For example, in some other specific embodiments, the air intake port 530 is a circular opening. The air regulating duct 520 is provided with a vacuum flow control member at the air intake port 530. The vacuum flow control member adjusts the size of the air intake port 530 to control the gas flow at the air intake port 530.

[0120] The beneficial effect of the above device is that the vacuum conveying mechanism controls and adjusts the vacuum flow rate within the air regulating tube 520 according to the size or transmission speed of the electrode piece, ensuring that electrode pieces of different sizes or different transmission speeds can be transported stably and efficiently, thereby improving the flexibility of use. By adjusting the opening size of the air suction port 530 to control the gas flow rate at the air suction port 530, it can adapt to the transmission of different electrode pieces. At the same time, it can also achieve the technical effect of improving the stability of the vacuum transmission of the electrode pieces while increasing the overall production speed of the equipment.

[0121] Example 4:

[0122] Based on Embodiments 1 to 3, this embodiment proposes a device control method for debugging the battery core die-cutting and lamination integration device as proposed in any one of the first aspects, characterized in that the method includes:

[0123] Step 601: Obtain the first matching speed of the unwinding device 200, the second matching speed of the die-cutting device 300, and the maximum stacking speed of the single stacking device 400;

[0124] Specifically, before debugging the equipment, the first matching speed of the unwinding device 200 is obtained. It can be seen from Example 1 and Example 2 that the first matching speed is obtained based on the number of rollers, the length of the material roll between the rollers, the unwinding speed, etc.; the second matching speed of the die-cutting device 300 is obtained. It can be seen from Example 1 and Example 2 that the second matching speed is determined by the die-cutting motor and the defective product judgment speed; the maximum stacking speed of the single stacking device 400 is obtained. The single stacking speed is determined by the power of the stacking device 400.

[0125] By obtaining the first matching speed, the second matching speed, and the maximum stacking speed, the speed of each module of the device can be differentiated in a modular manner, so as to better match the speeds of various devices later.

[0126] Step 602: Determine the number of stacking devices 400 according to the relationship between the first matching speed, the second matching speed, and the maximum stacking speed;

[0127] Specifically, a target stacking speed is calculated based on the acquired first and second matching speeds. The target stacking speed is then used to calculate the number of required stacking devices 400. During the calculation, the first stacking device adjacent to the die-cutting device 300 can be calculated at the maximum stacking speed, while the stacking speed of the second stacking device 400 connected thereto can be set at a reduced speed, perhaps 95% of the maximum stacking speed. The speed of the third stacking device 400 connected thereto can be set at a reduced speed of 85%, and so on. Ultimately, the combined speed of the multiple stacking devices 400 reaches the target stacking speed, thereby determining the final number of stacking devices 400 required.

[0128] Step 603: Determine the stacking speed of the entire stacking device 400 according to the number of the stacking devices 400, and adjust the first matching speed and the second matching speed according to the stacking speed.

[0129] Specifically, the overall stacking speed is determined according to the number of stacking devices 400 , and the segmented speeds are determined based on the overall stacking speed, corresponding to the theoretical operating speed of each stacking device 400 .

[0130] The beneficial effect of this method is that the number of stacking devices 400 in subsequent design can be determined according to the device parameters of the previous stacking device 400 during the design phase, and the speed of the stacking device 400 can be adjusted according to the device parameters of the previous device during actual debugging.

[0131] In actual use, two stacking devices 400, i.e., two sets of mirror-image first stacking devices 410 and second stacking devices 420, are optimal. After the stacking speed is calculated, the first matching speed and the second matching speed are adjusted so that the two stacking devices 400, i.e., two sets of mirror-image first stacking devices 410 and second stacking devices 420, can each operate normally at the same time.

[0132] Example 5:

[0133] like Figure 8 As shown, based on Examples 1 to 3, this embodiment proposes a method for producing a battery cell, which is used to produce a battery cell on the battery cell die-cutting and lamination integrated equipment proposed in any one of Examples 1 to 3, and the method includes:

[0134] Step 601: The unwinding device 200 unwinds the web and transports the web to the die-cutting device 300;

[0135] Specifically, this step also includes scanning the material roll code, uploading the information to MES for identification and binding, the loading trolley moves the electrode roll to the loading docking position, installs the electrode roll, and unwinds the positive and negative electrode sheet rolls.

[0136] The main effect of this step is to unwind the positive and negative electrode material rolls through the unwinding device 200 and transfer them to the die-cutting device 300 for die-cutting.

[0137] Step 602: The die-cutting device 300 performs cutting and detects defective electrodes after cutting; if defective electrodes are found, they are removed for processing; otherwise, good electrodes are transported to the laminating device 400;

[0138] Specifically, this step includes cutting the material roll into electrodes by a metal cutter under traction, detecting the size of the cut electrodes, detecting defects on the front and back of the electrodes, removing NG by high-speed air blowing, and transporting the electrodes transferred from the conveyor belt to the return platform of the stacking device 400 by an external suction cup.

[0139] The main effect of this step is to cut the material roll unwound by the unwinding device 200 through the die-cutting device 300 and remove defective products, so as to output the positive electrode sheets and the negative electrode sheets to the lamination device 400 for high-speed lamination.

[0140] Step 603: The lamination device 400 performs lamination and fixation, and cuts the battery cells after lamination and fixation.

[0141] Specifically, it includes providing secondary positioning information for the correction table and eliminating NG at the same time. The correction component re-positions and corrects the electrode under CCD detection to ensure the electrode and alignment. The corrected positive and negative electrode sheets are transferred to the stacking table in sequence by the inner suction cup, and the diaphragm unwinding component 230 unwinds at a uniform speed, and further the diaphragm swings in a "Z" shape to separate the positive and negative electrode sheets. After the stacking is completed, the diaphragm is cut off, and the stacking quality and progress are detected at the same time, NG is eliminated, and the diaphragm is wound around the battery cell after stacking to prevent the electrode from falling, and the battery cell is fixed with tape. The qualified battery cell is transferred to the pallet by the robot arm, and finally the electrode sheets with poor size and surface defects and the battery cells with poor stacking, poor Hi-pot & thickness test, and poor weighing test are collected to complete the battery cell production.

[0142] The serial numbers of the embodiment of the invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiment. The above are only preferred embodiments of the present invention and are not intended to limit the scope of the invention. Any equivalent device or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of the present invention.

Claims

1. An integrated device for die-cutting and laminating a battery core, characterized in that: include Rack(100); An unwinding device (200) is arranged on a frame (100), the unwinding device (200) comprising an unwinding assembly (230) and a roller assembly (240), the roller assembly (240) rolling the material roll pulled out by the unwinding assembly (230) at a first matching speed; A die-cutting device (300) is arranged on the frame (100) and adjacent to the unwinding device (200), and is used to die-cut the material roll of the unwinding device (200) at a second matching speed to form positive electrode sheets and negative electrode sheets; and at least one lamination device (400), arranged adjacent to the die-cutting device (300), for stacking the positive electrode sheets and the negative electrode sheets in intervals to form a laminated battery core; The first matching speed and the second matching speed are adjusted according to the stacking speed; and the battery core die-cutting and stacking integrated equipment is controlled by an equipment control method, and the equipment control method includes: Obtaining a first matching speed of the unwinding device, a second matching speed of the die-cutting device, and a maximum stacking speed of a single stacking device; determining the number of stacking devices according to a relationship among the first matching speed, the second matching speed, and the maximum stacking speed; The stacking speed of the overall stacking device is determined according to the number of the stacking devices, and the first matching speed and the second matching speed are adjusted according to the stacking speed.

2. The integrated die-cutting and lamination equipment for electric cores according to claim 1, characterized in that: The unwinding device (200) further comprises: A partition assembly (210) is located on the pole piece's tape path, the pole piece's tape path being divided by the partition assembly (210) into a first tension control section (250) and a second tension control section (260); the first tension control section (250) is located between the unwinding assembly (230) and the partition assembly (210); and the second tension control section (260) is located between the partition assembly (210) and the die-cutting device (300). A tension control component (220) is provided in the first tension control section (250) and the second tension control section (260), respectively, and adjusts the pole piece tension in the first tension control section (250) and the second tension control section (260) in sections.

3. The integrated die-cutting and lamination equipment for battery cores according to claim 2, characterized in that: The roller assembly (240) includes a direction-changing roller, a tension roller, and a traction roller; The direction-changing roller is used to change the direction of the belt path, the traction roller is used to stabilize and pull the belt path, and the tension roller is used to cooperate with the tension control component (220) to control the tension.

4. The integrated die-cutting and lamination equipment for battery cores according to claim 1, characterized in that: The die-cutting device (300) is further provided with a first conveyor belt (330), so that the positive electrode sheets and the negative electrode sheets are transported by the first conveyor belt (330) from the unwinding device (200) through the die-cutting device (300) to the laminating device (400); the die-cutting mechanism (310) is provided at the outlet of the unwinding device (200) to cut the material tape conveyed by the unwinding device (200) into electrode sheets; and the defective product screening mechanism (320) is provided at the outlet of the die-cutting mechanism (310) to screen defective electrode sheets after cutting. A second conveyor belt (430) is provided on both sides of the lamination device (400) to transport the positive and negative electrode sheets. The second conveyor belt (430) is provided with multiple sections, and the number is determined according to the number of the lamination devices (400). Each section of the second conveyor belt (430) is provided with an independent control motor for control, so as to realize segmented transmission.

5. The integrated die-cutting and lamination equipment for battery cores according to claim 4, characterized in that: The die-cutting mechanism (310) includes a die-cutting assembly; The die-cutting assembly is mounted on the first conveyor belt (330) and is arranged near the exit of the unwinding device (200). The die-cutting assembly fixes the die-cutting motor so that the die-cutting motor can cut the material belt.

6. The integrated die-cutting and lamination equipment for battery cores according to claim 4, characterized in that: The defective product screening mechanism (320) comprises a detection component and a defective product screening component; the detection component and the defective product screening component are arranged in sequence according to the transmission direction of the first conveyor belt (330); The detection assembly comprises a detection component, and the detection component is mounted on the upper surface of the first conveyor belt (330) by a detection bracket to detect defective electrodes; The defective product screening component is arranged at the lower part of the first conveyor belt (330); the first conveyor belt (330) is provided with a screening port, and the defective product screening component is provided with a positive pressure cylinder, and the air outlet of the positive pressure cylinder is arranged above the screening port to blow the defective products into the screening port.

7. The integrated die-cutting and lamination equipment for battery cores according to claim 4, characterized in that: The first conveyor belt (330) and the second conveyor belt (430) further include: A vacuum table (500) is provided with a vacuum chamber (510) for forming a negative pressure environment, and a vacuum hole is opened on the vacuum table (500) opposite to the channel; An air regulating pipe (520) for gas circulation is provided in the vacuum chamber (510), one end of the air regulating pipe (520) is connected to the plurality of vacuum holes, and the other end of the air regulating pipe (520) is provided with an air suction port (530) connected to the vacuum chamber (510); The air regulating pipe (520) is provided with a vacuum flow control component at the air suction port (530), and the vacuum flow control component controls the gas flow at the air suction port (530) by adjusting the opening size of the air suction port (530).

8. The integrated die-cutting and lamination equipment for battery cores according to claim 1, characterized in that: The lamination device (400) comprises a first lamination device (410) and a second lamination device (420); the first lamination device (410) is arranged in a direction corresponding to the pole piece transmission direction, and the second lamination device (420) is arranged in a direction opposite to the pole piece transmission direction.

9. The integrated device for die-cutting and laminating battery cores according to claim 8, characterized in that: The lamination device (400) includes a diaphragm assembly (440), a pole piece suction assembly (450), and a lamination assembly (460); The diaphragm assembly (440) is used to stretch the diaphragm; the lamination assembly (460) is used to correct the stacked positive and negative electrode sheets; the electrode sheet suction assembly (450) is provided with a first displacement assembly, a second displacement assembly, and an adsorption assembly; the adsorption assembly is arranged to move on the first displacement assembly, and the first displacement assembly is arranged to move on the second displacement assembly, the first displacement assembly moves horizontally, and the second displacement assembly moves longitudinally; The positive and negative electrode sheets are sucked by the transverse and longitudinal movement of the electrode sheet sucking assembly (450), and the deformation of the diaphragm by the electrode sheet sucking assembly (450) is achieved by the transverse movement, so that the positive and negative electrode sheets are isolated and attached to the lamination assembly (460) through the diaphragm.

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