Battery cell die cutting and lamination integrated equipment and equipment control method

Abstract

The invention relates to the technical field of battery cell production equipment, in particular to battery cell die cutting and lamination integrated equipment and an equipment control method. A rack is arranged, an unwinding device is arranged on the rack, the unwinding device comprises an unwinding assembly and a roller passing assembly, and the roller passing assembly rolls a material roll pulled out by the unwinding assembly at a first matching speed; meanwhile, a die cutting device is further arranged on the rack, is arranged on the rack, is adjacent to the unwinding device and is used for carrying out die cutting on the material roll of the unwinding device at a second matching speed to form a positive plate and a negative plate; meanwhile, a lamination device is arranged, is adjacent to the die cutting device and is used for stacking the positive plates and the negative plates at intervals to form a laminated battery cell; the first matching speed and the second matching speed can be adjusted and matched according to the lamination speed, so that other devices of the equipment can be matched and adjusted when the number of the lamination devices is changed, the utilization rate of the lamination devices is increased, and the overall production speed of the equipment is increased.

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 higher and 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] In existing die-cutting and laminating machines, there are usually multiple functional devices, such as unwinding devices, slicing devices, laminating devices, etc. If the laminating speed needs to be increased, it can often be achieved by setting up multiple laminating devices. However, due to the structural limitations of other functional devices of the die-cutting and laminating machine, the speed increase brought by the laminating device cannot achieve the ideal effect. At the same time, the control of the preceding devices such as unwinding and slicing devices is relatively independent, so that the speed of each functional device cannot be completely matched, which will also affect the upper limit of the laminating speed, and thus limit the improvement of 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 arranged on the frame, and the unwinding device comprises 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 arranged 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 a positive electrode sheet and a negative electrode sheet;

[0010] and at least one lamination 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 lamination speed.

[0012] A frame is set up, and an unwinding device is set 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 set 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 electrode sheets; at the same time, a stacking device is set, the stacking device is adjacent to the die-cutting device, and is used to stack the positive and negative electrode sheets at intervals to form a stacked battery cell; the first matching speed and the second matching speed can be adjusted and adapted according to the stacking speed, so as to achieve that when the stacking speed changes due to a change in the number of stacking devices, other devices of the equipment can be adjusted in coordination to improve the utilization rate of the stacking devices, thereby improving the overall production speed of the equipment.

[0013] In some embodiments, the partition assembly is located on the tape path of the pole piece, and the tape path of the pole piece 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 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 increase the control response speed and tension control accuracy of the tension control component. The technical effect adapts to the faster pole piece tape speed and can also increase the first matching speed.

[0016] In some embodiments, the roller assembly includes a change-of-direction 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, and are transported from the unwinding device to the laminating device through the die-cutting device. The die-cutting mechanism is arranged at the outlet of the unwinding device to cut the material tape transmitted by the unwinding device into electrode sheets; the defective product screening mechanism is arranged at the outlet of the die-cutting mechanism to screen the defective electrode sheets after cutting;

[0020] A second conveyor belt is arranged on both sides of the stacking device to transport the positive and negative electrode sheets. 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 pole pieces, and screens the defective products through the defective product screening mechanism, so as to transfer the normal positive pole pieces and negative pole pieces to the stacking device for stacking, wherein 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 exit 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] The second matching speed can be adjusted by setting the die-cutting motor and adjusting the speed of the die-cutting motor.

[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 according to 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, so as to 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, wherein a vacuum cavity for forming a negative pressure environment is arranged inside, and a vacuum hole opposite to the channel is opened on the vacuum table;

[0031] An air regulating pipe for gas circulation is arranged 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 air suction port to control the gas flow at the air 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. The mirror-image arrangement of the first stacking device and the second stacking device allows the equipment to have a maintenance channel, and the positive and negative electrodes are arranged on both sides of the stacking device, which can reduce the travel required to grab the electrodes on the same side.

[0036] In some embodiments, a lamination device 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, the first displacement assembly is arranged to move on the second displacement assembly, the first displacement assembly is transversely movable, and the second displacement assembly is longitudinally movable;

[0038] The positive and negative electrode sheets are sucked by the lateral and longitudinal movement of the electrode sheet suction assembly, and the diaphragm is deformed by the lateral movement so that the positive and negative electrode sheets are separated and attached to 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 core 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 an unwinding device, a second matching speed of a 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 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 set 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 electrode sheets; at the same time, a stacking device is set, the stacking device is adjacent to the die-cutting device, and is used to stack the positive and negative electrode sheets at intervals to form a stacked battery cell; the first matching speed and the second matching speed can be adjusted and adapted according to the stacking speed, so as to achieve that when the number of stacking devices changes, other devices of the equipment can be adjusted in coordination 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 It is a front view of the integrated device for die-cutting and laminating the battery core of the present invention;

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

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

[0053] Figure 6 It is a structural diagram of the internal vacuum structure of the first conveyor belt and the second conveyor belt of the integrated device for die-cutting and laminating electric cores of the present invention;

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

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

[0056] Reference numerals:

[0057] 100, rack;

[0058] 200, unwinding device; 210, partition assembly; 220, tension control assembly; 230, unwinding assembly; 240, over-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;

[0061] 500, vacuum table; 510, vacuum chamber; 520, air regulating duct; 530, air inlet. DETAILED DESCRIPTION

[0062] It should be noted that, in the absence of conflict, the embodiments of the present invention and the technical features in the embodiments may be combined with each other, and the detailed descriptions in the specific implementation methods should be understood as explanations of the purpose of the present invention and should not be regarded as improper limitations on the present invention.

[0063] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the specific technical solution of the present invention will be further described in detail below in conjunction with the 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.

[0064] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, 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.

[0065] 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 may change accordingly according to the changes in the orientation of the components in the drawings.

[0066] 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 integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0067] In the embodiments of the present invention, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0068] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the related in a specific way.

[0069] Embodiment 1:

[0070] like Figure 1 As shown, the present invention proposes an integrated device for die-cutting and laminating a battery core, comprising:

[0071] Rack 100;

[0072] The unwinding device 200 is arranged on the frame 100, and comprises 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;

[0073] The die-cutting device 300 is disposed 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 a positive electrode sheet and a negative electrode sheet;

[0074] and at least one lamination device 400, disposed adjacent to the die-cutting device 300, for stacking the positive electrode sheets and the negative electrode sheets at intervals to form a laminated battery cell;

[0075] Wherein, the lamination speed matches the first matching speed and the second matching speed.

[0076] 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 transmission of the positive electrode sheet and the negative electrode sheet separately without interfering with each other. In some more preferred modes, 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 mode 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 part to facilitate manual equipment maintenance and equipment inspection. Furthermore, the positive electrode sheet and the 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 device 200 is 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 increased 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 can make it more convenient to check the operation of the electrode sheet. A reeling device 200 is also provided, which is arranged on the frame 100, 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 to lead the material strip in the reeling assembly 230 to the outlet of the reeling device, and 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, and the transmission speed of the material strip is greatly increased for the first matching speed, so the first matching speed can be increased by adjusting the roller assembly 240, thereby achieving adaptation to the subsequent lamination device 400. At the same time, a die-cutting device 300 is also provided, which is used to cut the material roll so that the material roll can be stacked into a pole piece, and the die-cutting device 300 can improve the second matching speed by increasing the die-cutting speed, so as to cooperate with the speed adaptation when the speed of multiple stacking devices 400 is increased, and further improve the overall battery cell production speed. At least one stacking device 400 is set at the same time. Generally speaking, the more stacking devices 400 there are, the faster the stacking speed is, and the faster the pole piece consumption is. Therefore, different numbers of stacking devices 400 require different matching speeds for the previous devices. Further, if the preceding devices of the stacking device 400 all use a unified matching speed to output pole pieces, when there are too many stacking devices 400, the output pole piece speed is insufficient, resulting in the subsequent stacking devices 400 being in a stagnant state, and the speed of some stacking devices 400 cannot be fully utilized. If there are too few stacking devices 400, too many pole pieces will be output, resulting in the inability to fully utilize the speed of the preceding device, resulting in a waste of resources.Therefore, the unwinding device can be flexibly adjusted, and the first matching speed can be adjusted through the roller assembly and the unwinding assembly, and the second matching speed can be adjusted through the die-cutting device. It can 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.

[0077] In some preferred uses, two stacking devices 400 may be used, and the two stacking devices 400 may 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.

[0078] A frame 100 is provided, and an unwinding device 200 is provided on the frame 100, wherein the unwinding device 200 includes an unwinding assembly 230 and a roller assembly 240, wherein the roller assembly 240 rolls the material roll pulled out by the unwinding assembly 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 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 electrode sheets and negative electrode sheets; at the same time, a stacking device 400 is provided, and the stacking device 400 is adjacent to the die-cutting device 300, and is used to stack the positive electrode sheets and the negative electrode sheets at intervals to form a stacked battery cell; the stacking speed can be adjusted and adapted according to the first matching speed and the second matching speed, thereby realizing that when the number of stacking devices 400 changes, other devices of the equipment can be adjusted in coordination to improve the utilization rate of the stacking devices 400, thereby improving the overall production speed of the equipment.

[0079] Embodiment 2:

[0080] like Figures 2 to 5 As shown, based on Example 1, this embodiment further illustrates and optimizes the device proposed in Example 1.

[0081] In some embodiments, the partition assembly 210 is located on the tape path of the pole piece, and the tape path of the pole piece 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;

[0082] 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.

[0083] Specifically, the partition assembly 210 is arranged on the tape path of the pole piece, wherein the partition assembly 210 is arranged on the tape path of the material roll of the pole piece, and the partition assembly 210 forms a tension partition on the pole piece while transmitting the pole piece, and the tape path of the pole piece is separated by the partition assembly 210 to form a first tension control section 250 and a second tension control section 260. This method enables the adjustment and control of tension by controlling different tension sections to reduce the fluctuation of the pole piece tape path. More specifically, the first tension control section 250 may be located upstream of the tape path of the material roll, and the second tension control section 260 may be located downstream of the pole piece tape path. In a preferred embodiment, the partition assembly 210 may be provided with several groups, and several partition assemblies 210 are arranged at intervals along the tape path of the pole piece, so that the longer pole piece tape path can be divided into multiple groups of first tension control sections 250 and second tension control sections 260, which is conducive to the tension adjustment and control of the pole piece tape path, reduces the fluctuation of the pole piece tape path, and thus can improve the pole piece tape path speed.

[0084] The tension control assembly 220 is respectively arranged in the first tension control section 250 and the second tension control section 260 to adjust the tension of the pole piece 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 pole piece, the first tension control section 250 is located between the partition assembly 210 and the material roll assembly, and the downstream of the pole piece unwinding device 200 is connected to the die-cutting device 300, and the second tension control section 260 is located between the partition assembly 210 and the die-cutting device 300.

[0085] 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. The technical effect is to adapt to the faster pole piece tape speed, and at the same time, it can also cooperate to adjust the first matching speed.

[0086] In some embodiments, the roller assembly includes a change-of-direction roller, a tension roller, and a traction roller;

[0087] 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.

[0088] Specifically, the reversing roller is used to realize forward and reverse installation and prevent fooling, and it can also play the role of the material belt reversing required when installing double rollers. In the present invention, the reversing roller can also improve the overall material belt stability, 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, the greater the loss of running speed. Conversely, the loss is small, but the pressure on the material belt when it is too tight will reduce 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 can be 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.

[0089] In some preferred embodiments, the optimal number of rollers is 6 to 10. This method can keep the length of 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.

[0090] 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.

[0091] In some embodiments, specifically, a first conveyor belt 330 is provided so that the positive electrode sheet and the negative electrode sheet are transported by the first conveyor belt 330, 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 according to the transport direction of the first conveyor belt 330;

[0092] Second conveyor belts 430 are arranged on both sides of the stacking device 400 to transport 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 stacking devices 400; each section of the second conveyor belt 430 is provided with an independent control motor for control to realize segmented transmission.

[0093] Specifically, each of the first stacking device 410 and the 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 transmit 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. The speed control of different stacking devices is realized through segmented control. Optionally, the speeds of multiple stacking devices 400 can be proportionally allocated 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 the multiple stacking devices 400 is achieved to be the required stacking speed. This method can also achieve the most reasonable operation of the equipment and improve the equipment operation speed.

[0094] Meanwhile, 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.

[0095] Furthermore, a first conveyor belt 330 is provided for conveying the pole piece 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 pole piece is transported, and the faster the die-cutting speed, the faster the pole piece is formed, and the higher the defective product screening speed, the faster the pole piece output to the laminating device 400. 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, so that the die-cutting device 300 and the unwinding device 200 can match the speed, rather than adjusting them separately, so as to achieve the speed increase of the equipment.

[0096] 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, so as to transfer the normal positive electrode sheets and negative electrode sheets to the stacking device 400 for stacking, wherein, 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 overall equipment.

[0097] In some embodiments, the die-cutting mechanism 310 includes a die-cutting assembly;

[0098] 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.

[0099] Specifically, the die-cutting motor is arranged at the exit 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.

[0100] 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 according to the transmission direction of the first conveyor belt 330;

[0101] The detection component includes a detection part, 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 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.

[0102] Furthermore, the detection component mainly detects whether there are defective products in the electrode pieces cut by the die-cutting component, such as abnormal cutting, reverse electrode pieces, etc., so as to realize the subsequent screening and removal of defective products, and the specific mechanism for realizing this effect can preferably be a visual sensor such as CCD, camera, infrared detector, etc., or a color sensor, touch sensor, travel-related sensor, etc. After detecting defective products, the defective products are screened and removed by the defective product screening component, and after the defective products are detected, the defective products are separated from the first conveyor belt 330. The method for realizing this effect can be to set a reversible screening port on the first conveyor belt 330, the screening port is normally closed on the first conveyor belt 330 and the electrode pieces are transmitted, and after the defective products are detected, the positive pressure cylinder set above the screening port is opened, and the air outlet of the positive pressure cylinder is set above the screening port, and the positive pressure air outlet of the positive pressure cylinder is used to make the defective products blown below the first conveyor belt 330 when the screening port is opened. Furthermore, a negative pressure cylinder is provided below the screening port, which can open and close the screening port, and a waste chamber is provided at the bottom of the screening port, so that defective products are collected in the waste chamber for subsequent recycling. Through the above structure, high-speed discharge of defective products can be achieved by switching between positive and negative pressure, thereby improving the second matching speed.

[0103] By setting up a detection component for detecting defective products, it is used to cooperate with the defective product screening component to screen the defective products, thereby improving the second matching speed; at the same time, by screening the 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 the defective products by a robot, the method in this embodiment is faster and more efficient, and the structure is simpler and occupies less space.

[0104] 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;

[0105] 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 a direction along the pole piece transmission direction, and the second lamination device 420 is arranged in a direction opposite to the pole piece transmission direction.

[0106] Furthermore, in a preferred embodiment, Figure 4 The transport method shown is that the positive electrode sheet and the negative electrode sheet are placed on both sides of the laminating device 400, respectively. This method enables the positive and negative electrode sheets to be transported on both sides of the laminating device 400, respectively. This method enables the laminating device 400 to obtain the positive electrode sheet and the negative electrode sheet from both sides and stack them in the laminating device 400. Optionally, the positive electrode sheet and the negative electrode sheet can be transported on the same side. Conversely, the same-side transport will increase the acquisition time when the laminating device 400 obtains the outer electrode sheet, thereby slowing down the laminating speed. A first laminating device 410 and a second laminating device 420 are set at the same time. The two laminating devices 400 are arranged in opposite directions to form a set of mirror-image first laminating devices 410 and second laminating devices 420. The mirror-image first laminating device 410 and second laminating device 420 can form a maintenance channel between adjacent laminating devices 400. The maintenance channel can provide space for personnel to conduct in-depth equipment inspection while providing maintenance.

[0107] More preferably, the equipment preferably has two stacking devices 400, that is, it has two sets of mirror-image settings of the first stacking device 410 and the second stacking device 420, so as to form a device structure similar to four stacks, and a maintenance channel is left in the middle of the adjacent stacking devices 400 for maintenance. The beneficial effect of setting the stacking device 400 with this number is that by forming a device structure of four stacks, 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 device needs to increase the first matching speed and the second matching speed to match the increased stacking speed to achieve an overall speed increase.

[0108] The stacking device 400 is divided into a first stacking device 410 and a second stacking device 420. The first stacking device 410 and the second stacking device 420 are mirror-imaged, so that the equipment can provide a maintenance channel for easy maintenance, and the positive and negative electrode sheets are arranged on both sides of the stacking device 400, which can reduce the travel required for grabbing the electrode sheets on the same side.

[0109] In some embodiments, specifically, the lamination device 400 includes a diaphragm assembly 440 , a pole piece suction assembly 450 , and a lamination assembly 460 .

[0110] 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 electrode sheets; the straightening tables are provided on both sides of the stacking table for straightening the positive and negative electrode sheets; the diaphragm assembly 440 is provided on the stacking table to pull the diaphragm for separating the positive and negative electrode sheets, and the diaphragm assembly 440 is also provided with a swing roller, and the swing of the swing roller realizes the swing of the diaphragm to realize the respective pasting of the positive and negative electrode sheets; the electrode sheet suction assembly 450 includes a first direction displacement assembly, a second direction displacement assembly, and an adsorption assembly; the adsorption assembly is arranged on the first direction displacement assembly and moves in a first direction, and the first direction displacement assembly is arranged 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. Through the first direction displacement assembly and the second direction displacement assembly, the adsorption assembly obtains the positive and negative electrode sheets and performs pasting.

[0111] Furthermore, the stacking assembly 460 is provided with a stacking base, and the stacking base is provided with a straightening table and a stacking table. The straightening table is used for regular adjustment during stacking, and can be a UWV straightening table. By setting transverse motors and rotating motors 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 stacking table, and the diaphragm assembly 440 can lift the diaphragm on the stacking assembly 460, so that when stacking, the positive and negative electrodes are separated and stacked by the diaphragm through a "z" type stacking method, and in order to further cooperate with the stacking, the stacking table has a lifting function to cooperate with the height change caused by the stacking of the electrodes. And 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, a transverse movement between the positive and negative electrode conveyor belts. And 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 a guide rail plus a motor, a screw rod, a clamping block, etc., and the guide rails or screw rods, belts 520, etc. of the first direction displacement assembly and the second direction displacement assembly that provide displacement are perpendicular to each other to provide movement in two directions.

[0112] By stacking the positive and negative stacks of the battery cell 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.

[0113] Embodiment 3:

[0114] 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.

[0115] In some embodiments, the first conveyor belt 330 and the second conveyor belt 430 further include:

[0116] A vacuum table 500 is provided with 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;

[0117] An air regulating pipe 530 for gas circulation is provided in the vacuum chamber 510. One end of the air regulating pipe 530 is connected to a plurality of vacuum holes, and the other end of the air regulating pipe 530 is provided with an air suction port 540 connected to the vacuum chamber 510.

[0118] The air regulating pipe 530 is provided with a vacuum flow control component at the air suction port 540 , and the vacuum flow control component controls the gas flow at the air suction port 540 by adjusting the opening size of the air suction port 540 .

[0119] Specifically, the first conveyor belt 330 and the second conveyor belt 430 are provided with a vacuum table 500, an air regulating pipe 530 is provided in the vacuum tire, a vacuum flow control component for adjusting the vacuum flow is provided on the air regulating pipe 530, and a belt 520 for conveying pole pieces and a vacuum component for sucking gas in the vacuum chamber 510 are provided on the vacuum table 500. The beneficial effect of this structure is that by adjusting the vacuum flow control component, the belt 520 can stably transmit pole pieces of different sizes or different transmission speeds, thereby adapting to faster pole piece transmission efficiency, which is beneficial to improving the overall production speed.

[0120] An air suction port 540 is provided at one end of the air regulating pipe 530 away from the vacuum plate. Specifically, the air suction port 540 is a rectangular opening. When vacuuming, the gas flowing in the air regulating pipe 530 is drawn out at the air suction port 540, and a negative pressure environment is formed in the air regulating pipe 530. In an alternative solution, the air suction port 540 is not in the above shape, and those skilled in the art can replace it on this basis. For example, in some other specific embodiments, the air suction port 540 is a circular opening. The air regulating pipe 530 is provided with a vacuum flow control component at the air suction port 540, and the vacuum flow control component adjusts the size of the air suction port 540 to control the gas flow at the air suction port 540.

[0121] The beneficial effect of the above device is that the vacuum transmission mechanism controls and adjusts the vacuum flow in the air regulating tube 530 according to the size or transmission speed of the electrode piece, ensuring that the electrode pieces of different sizes or different transmission speeds can be stably and efficiently transmitted, thereby improving the flexibility of use. By adjusting the opening size of the air suction port 540 to control the gas flow at the air suction port 540, it can adapt to the transmission of different electrode pieces, and at the same time, it can also achieve the technical effect of improving the stability of the vacuum transmission of the electrode piece while improving the overall production speed of the equipment.

[0122] Embodiment 4:

[0123] 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 comprises:

[0124] Step 601: obtaining a first matching speed of the unwinding device 200, a second matching speed of the die-cutting device 300, and a maximum stacking speed of a single stacking device 400;

[0125] Specifically, before debugging the equipment, the first matching speed of the unwinding device 200 is obtained. It can be known from Example 1 and Example 2 that the first matching speed is obtained according to 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 known 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 according to the power of the stacking device 400.

[0126] 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 between the various devices later.

[0127] 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;

[0128] Specifically, the target stacking speed is calculated according to the first matching speed and the second matching speed, and the number of required stacking devices 400 is calculated according to the target stacking speed. During the calculation, the first stacking device close to the die-cutting device 300 can be calculated according to the maximum stacking speed, and the stacking speed of the second stacking device 400 connected subsequently can be set to a certain attenuation, which can be set to 95% of the maximum stacking speed, and the attenuation of the third stacking device 400 connected is 85%, and so on, and finally the total speed of multiple stacking devices 400 reaches the target stacking speed, and then the number of stacking devices 400 required is determined.

[0129] Step 603: Determine the stacking speed of the overall 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.

[0130] Specifically, the overall stacking speed is determined according to the number of stacking devices 400 , and the segment speed is determined according to the overall stacking speed, corresponding to the theoretical operating speed of each stacking device 400 .

[0131] 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 stage, and the speed of the stacking device 400 can be adjusted according to the device parameters of the previous device during actual debugging.

[0132] In actual use, two stacking devices 400, that is, two sets of mirror-image first stacking devices 410 and second stacking devices 420 are optimal, and after the stacking speed is calculated, the first matching speed and the second matching speed are adjusted so that the two stacking devices 400, that is, two sets of mirror-image first stacking devices 410 and second stacking devices 420 can each operate normally at the same time.

[0133] Embodiment 5:

[0134] 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 integration equipment proposed in any one of Examples 1 to 3, characterized in that the method comprises:

[0135] Step 601: The unwinding device 200 unwinds the web and transports the web to the die-cutting device 300;

[0136] 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.

[0137] The main effect of this step is to unwind the positive electrode and negative electrode material rolls through the unwinding device 200 and transfer them to the die-cutting device 300 for die-cutting.

[0138] Step 602: the die-cutting device 300 performs sheet cutting and performs defective product detection on the electrode pieces after sheet cutting; if defective products are found, they are discharged for processing; otherwise, the good electrode pieces are transported to the lamination device 400;

[0139] Specifically, this step includes cutting the material roll into pole pieces by a metal cutter under traction, detecting the size of the cut pole pieces, detecting defects on the front and back sides of the pole pieces, removing NG by high-speed air blowing, and moving the pole pieces transferred from the conveyor belt to the return table of the stacking device 400 by an external suction cup.

[0140] 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.

[0141] Step 603: The lamination device 400 performs lamination and fixation, and cuts out the battery cells after lamination and fixation.

[0142] Specifically, it includes providing secondary positioning information for the alignment table and removing NG at the same time. The alignment component re-positions and aligns the electrode under CCD detection to ensure the electrode and alignment. The aligned 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 the diaphragm is further swung 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, and NG is removed. The diaphragm is fixed on the battery cell after the stacking is completed to prevent the electrode from falling, and the battery cell is fixed with tape, and the qualified battery cell is transferred to the tray 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.

[0143] The serial numbers of the embodiments of the invention are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present 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 patent protection scope 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; Wherein, the first matching speed and the second matching speed are adjusted according to the lamination 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 tape path of the pole piece, and the tape path of the pole piece 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); A tension control component (220), wherein the tension control component (220) is respectively arranged 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.

3. The integrated die-cutting and lamination equipment for electric cores according to claim 2, characterized in that: The roller assembly (240) comprises 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 perform tension control.

4. The integrated device for die-cutting and laminating electric 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 sheet and the negative electrode sheet are transported by the first conveyor belt (330) from the unwinding device (200) to the laminating device (400) through the die-cutting device (300); the die-cutting mechanism (310) is arranged at the exit of the unwinding device (200) to cut the material belt conveyed by the unwinding device (200) into electrode sheets; and the defective product screening mechanism (320) is arranged at the exit of the die-cutting mechanism (310) to screen defective electrode sheets after cutting; Second conveyor belts (430) are arranged on both sides of the lamination device (400) to transport 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 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 electric cores according to claim 4, characterized in that: The die-cutting mechanism (310) comprises 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 device for die-cutting and laminating electric 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 device for die-cutting and laminating electric 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 opposite to the channel is opened on the vacuum table (500); An air regulating pipe (520) for gas circulation is arranged in the vacuum chamber (510), one end of the air regulating pipe (520) is connected to a plurality of the 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 device for die-cutting and laminating electric 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 according to the transmission direction of the pole piece, and the second lamination device (420) is arranged in a direction opposite to the transmission direction of the pole piece.

9. The integrated device for die-cutting and laminating electric cores according to claim 8, characterized in that: The lamination device (400) comprises 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 stacking 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, 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 suction assembly (450), and the deformation of the diaphragm by the electrode sheet suction assembly (450) is achieved by the transverse movement, so that the positive and negative electrode sheets are isolated and attached to the stacking assembly (460) through the diaphragm.

10. A device control method for controlling the battery core die cutting and lamination integration device according to any one of claims 1 to 9, characterized in that: Methods include: 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 the relationship between 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.

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