Modular production line and production process of battery current collector pole piece

Abstract

The present invention discloses a modular production line and a production process for battery current collector polar plates, which relates to the technical field of battery production equipment. Among them, the modular production line includes: a frame, the frame includes a first installation part, a second installation part, and a third installation part that are spliced together; an unwinding and welding unit, installed on the first installation part, the unwinding and welding unit can unwind, weld materials, and output a first finished material; a gluing mechanism, arranged downstream of the unwinding and welding unit and installed on the third installation part, the gluing mechanism can receive the first finished material, apply glue to it, and output a second finished material; and a winding mechanism, arranged downstream of the gluing mechanism and installed on the second installation part, the winding mechanism can wind the second finished material. The technical solution provided by the present invention can solve the problem of poor flexibility of the existing automatic production line for battery cells.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production equipment, and particularly relates to a modular production line and a production process for battery current collector electrodes. Background Art

[0002] A battery current collector electrode includes a separator and a foil (AB-side foil), wherein the foil is welded to the separator. The automated production line for battery current collector electrodes is a crucial part in the manufacturing process of lithium batteries. The automated production line for battery current collector electrodes includes a unwind module, a slitting module, a welding module, a coating module, a winding module, etc.

[0003] In the existing automated production line for battery current collector electrodes, the unwind module, the slitting module, the welding module, the coating module, and the winding module are integrated on one machine platform. If other modules need to be added or removed in the automated production line for battery current collector electrodes, then the above modules need to be removed from the machine platform and then re-arranged. Its flexibility is poor, resulting in slower production line upgrading or disassembly. Summary of the Invention

[0004] The main object of the present invention is to propose a modular production line, aiming to solve the problem of poor flexibility of the existing automated production line for battery cells.

[0005] To achieve the above object, the modular production line proposed by the present invention includes:

[0006] A frame, the frame includes a first installation part, a second installation part, and a third installation part that are spliced together;

[0007] An unwind and welding unit, installed on the first installation part, the unwind and welding unit can unwind and weld materials, and output a first finished material;

[0008] A coating mechanism, arranged downstream of the unwind and welding unit, and installed on the third installation part, the coating mechanism can receive the first finished material, apply glue to it, and output a second finished material;

[0009] And a winding mechanism, arranged downstream of the coating mechanism, and installed on the second installation part, the winding mechanism can wind the second finished material.

[0010] In one embodiment, the second installation part splices the first installation part and the third installation part.

[0011] In one implementation manner, the first installation part is provided with a first transportation path, a second transportation path, and a third transportation path;

[0012] The unwinding and welding unit includes a first unwinding mechanism provided at the head end of the first transportation path, a second unwinding mechanism provided at the head end of the second transportation path, a third unwinding mechanism provided at the head end of the third transportation path, a slitting mechanism provided in the first transportation path, and a first welding mechanism. The slitting mechanism is provided downstream of the first unwinding mechanism, and the first welding mechanism is provided downstream of the slitting mechanism. The ends of the second transportation path and the third transportation path can be connected to the first transportation path, and the ends of the second transportation path and the third transportation path are provided downstream of the slitting mechanism and upstream of the first welding mechanism;

[0013] The first unwinding mechanism is used for placing diaphragm materials, and the diaphragm materials can move along the first transportation path;

[0014] The second unwinding mechanism is used for placing the first A-side foil materials, and the first A-side foil materials can move along the second transportation path;

[0015] The third unwinding mechanism is used for placing the first B-side foil materials, and the first B-side foil materials can move along the third transportation path;

[0016] The diaphragm materials are provided with a first side and a second side, and the first side and the second side are oppositely arranged. The first welding mechanism can weld the first A-side foil materials and the first B-side foil materials to the first side of the diaphragm materials, and the end of the first transportation path can output the first finished materials.

[0017] In an embodiment, the first mounting portion is provided with a fourth transportation path and a fifth transportation path;

[0018] The unwinding and welding unit further includes a fourth unwinding mechanism provided at the head end of the fourth transportation path, a fifth unwinding mechanism provided at the head end of the fifth transportation path, and a second welding mechanism provided in the first transportation path. The second welding mechanism is provided downstream of the first welding mechanism. The ends of the fourth transportation path and the fifth transportation path can be connected to the first transportation path, and the ends of the fourth transportation path and the fifth transportation path are provided downstream of the first welding mechanism and upstream of the second welding mechanism;

[0019] The fourth unwinding mechanism is used for placing the second A-side foil materials, and the second A-side foil materials can move along the fourth transportation path;

[0020] The fifth unwinding mechanism is used for placing the second B-side foil materials, and the second B-side foil materials can move along the fifth transportation path;

[0021] The second welding mechanism can weld the second A-side foil material and the second B-side foil material to the second side of the diaphragm material, and the end of the first transportation path can output the first finished material.

[0022] In one embodiment, the second transportation path and the fourth transportation path are arranged on one side of the first transportation path;

[0023] The third transportation path and the fifth transportation path are arranged on the other side of the first transportation path.

[0024] In one embodiment, the unwinding and welding unit further includes a first tape connecting component, a first tension component, a first deviation rectifying component, a first driving component, a second tension component, a second deviation rectifying component, a first welding mark flattening component, a second welding mark flattening component, and a dust removing component arranged in the first transportation path;

[0025] The first tape connecting component is arranged downstream of the first unwinding mechanism and above the first unwinding mechanism. The first tension component is arranged downstream of the first tape connecting component and above the first tape connecting component. The first deviation rectifying component is arranged downstream of the first tension component, upstream of the slitting mechanism, and above the first tape connecting component. The first driving component is arranged downstream of the slitting mechanism. The second tension component is arranged downstream of the first driving component and below the first driving component. The second deviation rectifying component is arranged downstream of the second tension component and upstream of the first welding mechanism. The first welding mark flattening component is arranged downstream of the first welding mechanism and upstream of the second welding mechanism. The second welding mark flattening component is arranged downstream of the second welding mechanism. The dust removing component is arranged downstream of the second welding mechanism.

[0026] In one embodiment, the first mounting portion includes a fourth mounting portion and a fifth mounting portion spliced together;

[0027] The first unwinding mechanism, the second unwinding mechanism, the third unwinding mechanism, the slitting mechanism, the first welding mechanism, the first tape connecting component, the first tension component, the first deviation rectifying component, the first driving component, the second tension component, the second deviation rectifying component, and the first welding mark flattening component are arranged on the fourth mounting portion;

[0028] The fourth unwinding mechanism, the fifth unwinding mechanism, the second welding mechanism, the second welding mark flattening component, and the dust removing component are arranged on the fifth mounting portion.

[0029] In one embodiment, the frame is provided with a sixth transportation path, which is arranged on the second installation part and the third installation part. The head end of the sixth transportation path is placed on the second installation part and can receive the first finished product material output from the tail end of the first transportation path. The tail end of the sixth transportation path is placed on the third installation part;

[0030] The glue coating mechanism includes a first glue coating component and a second glue coating component arranged in the sixth transportation path. The first glue coating component is used for glue coating on the A surface of the first finished product material, and the second glue coating component is used for glue coating on the B surface of the first finished product material;

[0031] A second detection component and a third detection component are also arranged in the sixth transportation path. The second detection component is arranged upstream of the first glue coating component, and the third detection component is arranged upstream of the second glue coating component and downstream of the first glue coating component.

[0032] In one embodiment, the second installation part is provided with a seventh transportation path, and the second finished product material is input into the seventh transportation path through the head end of the seventh transportation path;

[0033] The winding mechanism is arranged at the tail end of the seventh transportation path;

[0034] The modular production line further includes a detection and labeling component, which includes a detection module and a labeling module. The detection module is arranged downstream of the second welding and leveling component and upstream of the dust removal component, and the labeling module is arranged upstream of the winding mechanism and downstream of the dust removal component.

[0035] The present invention also proposes a production process for battery current collector electrodes, which is applied to a modular production line. The production process for battery current collector electrodes includes:

[0036] The first unwinding mechanism unwinds the separator material. The separator material moves along the first transportation path and enters the first welding mechanism. The second unwinding mechanism unwinds the first A-side foil material. The first A-side foil material moves along the second transportation path and enters the first welding mechanism. The third unwinding mechanism unwinds the first B-side foil material. The first B-side foil material moves along the third transportation path and enters the first welding mechanism. The first welding mechanism welds the first A-side foil material and the first B-side foil material to the first side of the separator material;

[0037] The material processed by the first welding mechanism moves along the first transportation path and enters the second welding mechanism. The fourth unwinding mechanism unwinds the second A-side foil material, and the second A-side foil material enters the second welding mechanism along the fourth transportation path. The fifth unwinding mechanism unwinds the second B-side foil material, and the second B-side foil material enters the second welding mechanism along the fifth transportation path. The second welding mechanism welds the second A-side foil material and the second B-side foil material to the second side of the diaphragm material. The end of the first transportation path can output the first finished material;

[0038] The sixth transportation path receives the first finished material, and the first finished material moves along the sixth transportation path. The coating mechanism applies glue to the first finished material. The end of the sixth transportation path can output the second finished material;

[0039] The seventh transportation path receives the second finished material, and the second finished material moves along the seventh transportation path. The winding mechanism winds the second finished material.

[0040] The technical solution of the present invention divides the frame into a first installation part, a second installation part, and a third installation part, and installs the unwinding and welding unit, the coating mechanism, and the winding mechanism on different installation parts respectively. Moreover, the first installation part, the second installation part, and the third installation part are spliced together. In this way, the production line can be modularized, and the modular design can improve the flexibility of the production line. When it is necessary to remove the coating mechanism, the third installation part can be directly removed from the production line at this time, without the need to remove the first installation part and the second installation part. It can more flexibly adapt to the changes in customer needs, make the production line upgrade or disassemble faster, shorten the production preparation time, and solve the technical problems existing in the prior art. Description of the Drawings

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0042] Figure 1 It is a schematic structural diagram of an embodiment of the modular production line provided by the present invention;

[0043] Figure 2 It is Figure 1 a schematic structural diagram of the modular production line;

[0044] Figure 3 It is Figure 2 an enlarged view of part A in the figure;

[0045] Figure 4 is Figure 2 An enlarged view of position B in

[0046] Figure 5 is Figure 2 An enlarged view of position C in

[0047] Figure 6 is Figure 2 An enlarged view of position D in

[0048] Figure 7 Schematic structural diagram of an embodiment of the first installation part in the modular production line provided by the present invention;

[0049] Figure 8 Schematic diagram of the steps of the battery current collector pole piece production process provided by the present invention.

[0050] Explanation of the reference numerals in the drawings:

[0051] 100, frame; 110, first installation part; 111, fourth installation part; 112, fifth installation part; 120, second installation part; 130, third installation part; 140, first transportation path; 150, second transportation path; 160, third transportation path; 170, fourth transportation path; 180, fifth transportation path; 190, sixth transportation path; 1100, seventh transportation path;

[0052] 200, unwinding and welding unit; 210, first unwinding mechanism; 220, second unwinding mechanism; 230, third unwinding mechanism; 240, slitting mechanism; 250, first welding mechanism; 260, fourth unwinding mechanism; 270, fifth unwinding mechanism; 280, second welding mechanism; 290, first tape connecting assembly; 2200, first tension assembly; 2210, first deviation rectifying assembly; 2220, first driving assembly; 2230, second tension assembly; 2240, second deviation rectifying assembly; 2250, first weld mark flattening assembly; 2260, second weld mark flattening assembly; 2270, dust removal assembly; 2280, first detection assembly;

[0053] 300, gluing mechanism; 310, first gluing assembly; 320, second gluing assembly; 330, second detection assembly; 340, third detection assembly;

[0054] 400, detection and labeling assembly; 410, detection module; 420, labeling module; 421, first labeling module; 422, second labeling module;

[0055] 500. The third tension component; 600. The second driving component; 700. The third deviation rectifying component; 800. The fourth deviation rectifying component; 900. The third driving component; 10. The fifth tension component; 20. The conveying roller; 30. The winding mechanism; 40. The fourth tension component; 50. The second tape connecting component.

[0056] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0058] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0059] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0060] The battery current collector pole piece includes a separator and a foil (AB-side foil), wherein the foil is welded to the separator. The automatic production line of the battery current collector pole piece is a crucial part in the manufacturing process of lithium batteries. The automatic production line of the battery current collector pole piece includes a unwinding module, a slitting module, a welding module, a gluing module, a winding module, etc.

[0061] In the existing automated production line for battery current collector electrodes, the unwinding module, slitting module, welding module, gluing module, and winding module are integrated on one machine platform. If other modules need to be added or removed in the automated production line for battery current collector electrodes, the above-mentioned modules need to be removed from the machine platform and then re-arranged. Its flexibility is poor, resulting in slower production line upgrades or disassembly.

[0062] The present invention provides a modular production line.

[0063] Please refer to Figure 1 , in an embodiment of the present invention, the modular production line includes: a frame 100, an unwinding and welding unit 200, a gluing mechanism 300, and a winding mechanism 30. The frame 100 includes a first installation part 110, a second installation part 120, and a third installation part 130 that are spliced together; the unwinding and welding unit 200 is installed on the first installation part 110, and the unwinding and welding unit 200 can unwind and weld materials and output a first finished material; it should be noted that the unwinding and welding unit 200 can unwind multiple materials and then process the multiple materials into a first finished material. Among them, the multiple materials are at least two materials. When unwinding the materials, a unwinding mechanism is correspondingly provided for each material. The gluing mechanism 300 is arranged downstream of the unwinding and welding unit 200 and is installed on the third installation part 130. The gluing mechanism 300 can receive the first finished material, apply glue to it, and output a second finished material. That is to say, the first finished material output by the unwinding and welding unit 200 can be glued by the gluing mechanism 300 and then output by the gluing mechanism 300. At this time, the second finished material is output by the gluing mechanism 300; the winding mechanism 30 is arranged downstream of the gluing mechanism 300 and is installed on the second installation part 120. The winding mechanism 30 can wind the second finished material. After the gluing mechanism 300 applies glue to the first finished material and outputs the second finished material, the winding mechanism 30 can wind the second finished material.

[0064] It can be understood that by dividing the frame 100 into a first installation part 110, a second installation part 120, and a third installation part 130, and installing the unwinding and welding unit 200, the gluing mechanism 300, and the winding mechanism 30 on different installation parts respectively, and the first installation part 110, the second installation part 120, and the third installation part 130 are spliced together, the production line can be modularized in this way. The modular design can improve the flexibility of the production line. If it is necessary to remove the gluing mechanism 300, the third installation part 130 can be directly removed from the production line at this time, without the need to remove the first installation part 110 and the second installation part 120. It can more flexibly adapt to changes in customer needs, making the production line upgrade or disassembly faster, shortening the production preparation time, and solving the technical problems existing in the prior art.

[0065] It should be noted that the modular production line is more convenient to maintain. Since each module is relatively independent, when a certain module fails, it can be quickly located and repaired, reducing the impact on the production line. For example, when the gluing mechanism 300 fails, the third installation part 130 can be removed from the production line at this time, and the winding mechanism 30 winds the first finished product material, without affecting the production of the first finished product material. After the gluing mechanism 300 is repaired later, the wound first finished product material is unwound, and then the gluing mechanism 300 applies glue to obtain the second finished product material.

[0066] Furthermore, in one embodiment, referring to Figure 1 , the second installation part 120 joins the first installation part 110 and the third installation part 130. That is to say, the second installation part 120 is arranged between the first installation part 110 and the third installation part 130. At this time, when it is necessary to remove the gluing mechanism 300 from the production line, since the third installation part 130 is arranged on one side of the second installation part 120, it is more convenient to remove in this way.

[0067] In one embodiment (not shown), the third installation part 130 joins the first installation part 110 and the second installation part 120. That is to say, the third installation part 130 is arranged between the first installation part 110 and the second installation part 120. In this way, the path for the first finished product material to enter the gluing mechanism 300 can be reduced, making the structure of the frame 100 relatively compact and occupying as little space as possible.

[0068] In one embodiment, referring to Figure 2 、 Figure 3 , the first installation part 110 is provided with a first transportation path 140, a second transportation path 150, and a third transportation path 160;

[0069] The unwinding and welding unit 200 includes a first unwinding mechanism 210 provided at the head end of the first transport path 140, a second unwinding mechanism 220 provided at the head end of the second transport path 150, a third unwinding mechanism 230 provided at the head end of the third transport path 160, a slitting mechanism 240 provided in the first transport path 140, and a first welding mechanism 250. The slitting mechanism 240 is provided downstream of the first unwinding mechanism 210, and the first welding mechanism 250 is provided downstream of the slitting mechanism 240. The ends of the second transport path 150 and the third transport path 160 can be connected to the first transport path 140, and the ends of the second transport path 150 and the third transport path 160 are provided downstream of the slitting mechanism 240 and upstream of the first welding mechanism 250. Among them, the first welding mechanism 250 is configured as an ultrasonic welding device. In some embodiments, the ultrasonic welding device includes a welding head, a mounting bracket, and a welding base. In some embodiments, the welding head can be a roller welding head. Further, the welding head and the welding base in the ultrasonic welding device can be close to or away from each other, so as to adjust the distance between the welding head and the welding base to ensure the pressure of the welding head during welding. Further, in some embodiments, the welding base can move towards the welding head. Specifically, the welding base is installed on the mounting seat through a first pressure regulating cylinder. At this time, the first pressure regulating cylinder can drive the welding base to approach or move away from the welding head. When the welding base approaches the welding head, the distance between the two is smaller, and the pressure of the welding head during welding will be relatively large. When the welding base moves away from the welding head, the distance between the two is larger, and the pressure of the welding head during welding will be relatively small. Further, in an embodiment, the slitting mechanism 240 includes an upper die, a lower die, and a waste bin. The upper die and the lower die can be set as a whole, and the waste bin is used to receive waste. Specifically, the slitting mechanism 240 is used to process the diaphragm material so that the width of the diaphragm material meets the requirements. Specifically, the diaphragm material has a first side and a second side, and the width of the diaphragm material is the vertical distance between the first side and the second side. Further, in some embodiments, the slitting mechanism 240 can also use other structures to cut the diaphragm material so that the width of the diaphragm material meets the requirements.

[0070] The first unwinding mechanism 210 is used for placing the diaphragm material, and the diaphragm material can move along the first transport path 140. Since the first unwinding mechanism 210 is provided at the head end of the first transport path 140, when the first unwinding mechanism 210 unwinds the diaphragm material, it can transport the diaphragm material into the first transport path 140. It should be noted that the diaphragm material is placed in the first unwinding mechanism 210 in a rolled state, and the first transport path 140 includes a plurality of transport rollers 20.

[0071] The second unwinding mechanism 220 is used for placing the first A-side foil material, and the first A-side foil material can move along the second transportation path 150. Since the second unwinding mechanism 220 is arranged at the head end of the second transportation path 150, when the second unwinding mechanism 220 unwinds the first A-side foil material, it can convey the first A-side foil material into the second transportation path 150. It should be noted that the first A-side foil material is placed in the second unwinding mechanism 220 in a rolled state, and the second transportation path 150 includes a plurality of transport rollers 20.

[0072] The third unwinding mechanism 230 is used for placing the first B-side foil material, and the first B-side foil material can move along the third transportation path 160. Since the third unwinding mechanism 230 is arranged at the head end of the third transportation path 160, when the third unwinding mechanism 230 unwinds the first B-side foil material, it can convey the first B-side foil material into the third transportation path 160. It should be noted that the first B-side foil material is placed in the third unwinding mechanism 230 in a rolled state, and the third transportation path 160 includes a plurality of transport rollers 20.

[0073] The separator material has a first side and a second side, and the first side and the second side are arranged opposite to each other. The first welding mechanism 250 can weld the first A-side foil material and the first B-side foil material to the first side of the separator material, and the end of the first transportation path 140 can output the first finished product material. It should be noted that in the prior art, the method of welding the separator material and the foil is to first form the separator material into a sheet structure and then weld the foil to the sheet-shaped separator material. This method has low efficiency during production and processing because after each separator material is processed, the robotic arm needs to grab another separator material, and there is an additional process of the robotic arm grabbing the separator material between the continuous welding operations of the separator material, which will result in a longer preparation time before welding the separator material and the foil. When the unwinding and welding unit 200 adopts the above structure, through the unwinding method, the separator material and the foil can continuously enter the first welding mechanism 250, and the first welding mechanism can continuously process the separator material and the foil, saving the time for the robotic arm to grab the sheet-shaped separator material and effectively improving the production efficiency. That is to say, when the unwinding and welding unit 200 adopts the above structure, the modular production line of this embodiment can improve the processing efficiency of the separator material while having high flexibility, thereby improving the production efficiency of the battery current collector pole piece.

[0074] In one embodiment, referring to Figure 2 、 Figure 4 , the first mounting portion 110 is provided with a fourth transportation path 170 and a fifth transportation path 180;

[0075] The unwinding and welding unit 200 further includes a fourth unwinding mechanism 260 provided at the head end of the fourth transportation path 170, a fifth unwinding mechanism 270 provided at the head end of the fifth transportation path 180, and a second welding mechanism 280 provided in the first transportation path 140. The second welding mechanism 280 is provided downstream of the first welding mechanism 250. The ends of the fourth transportation path 170 and the fifth transportation path 180 can be connected to the first transportation path 140. The ends of the fourth transportation path 170 and the fifth transportation path 180 are provided downstream of the first welding mechanism 250 and upstream of the second welding mechanism 280. Further, the second welding mechanism 280 can also be configured as an ultrasonic welding device. When the second welding mechanism 280 is configured as an ultrasonic welding device, the second welding mechanism 280 can use the same device as the first welding mechanism 250 at this time.

[0076] The fourth unwinding mechanism 260 is used for placing the second A-side foil material. The second A-side foil material can move along the fourth transportation path 170. Since the fourth unwinding mechanism 260 is provided at the head end of the fourth transportation path 170, when the fourth unwinding mechanism 260 unwinds the second A-side foil material, it can convey the second A-side foil material into the fourth transportation path 170. It should be noted that the first A-side foil material is placed in the fourth unwinding mechanism 260 in a rolled state. The fourth transportation path 170 includes a plurality of transport rollers 20.

[0077] The fifth unwinding mechanism 270 is used for placing the second B-side foil material. The second B-side foil material can move along the fifth transportation path 180. Since the fifth unwinding mechanism 270 is provided at the head end of the fifth transportation path 180, when the fifth unwinding mechanism 270 unwinds the second B-side foil material, it can convey the second B-side foil material into the fifth transportation path 180. It should be noted that the second B-side foil material is placed in the fifth unwinding mechanism 270 in a rolled state. The fifth transportation path 180 includes a plurality of transport rollers 20.

[0078] The second welding mechanism 280 can weld the second A-side foil material and the second B-side foil material to the second side of the separator material. The end of the first transportation path 140 can output the first finished product material. It should be noted that when the unwinding and welding unit 200 further includes the second welding mechanism 280, this production line can perform foil welding on both the first side and the second side of the separator material. Only by adding the second welding mechanism 280 to the production line can the above requirements be met. At the same time, this production line is modularly designed, and it is relatively convenient to add the second welding mechanism 280. Further, the modular design can improve the flexibility of this production line while having a good ability to cope with the upgrade of the production line.

[0079] In one embodiment, referring to Figure 2 , Figure 3 , Figure 4 , the second transport path 150 and the fourth transport path 170 are provided on one side of the first transport path 140. It can be understood that the second unwinding mechanism 220 and the third unwinding mechanism 230 are provided on one side of the first transport path 140; the third transport path 160 and the fifth transport path 180 are provided on the other side of the first transport path 140. Similarly, the third unwinding mechanism 230 and the fifth unwinding mechanism 270 are provided on the other side of the first transport path 140. Such an arrangement can make better use of the vertical space of the frame 100 and avoid the horizontal space of the production line being too long, resulting in the production line being difficult to place in the workshop. Specifically, the second unwinding mechanism 220 and the third unwinding mechanism 230 are arranged on one side of the first welding mechanism 250, and the fourth unwinding mechanism 260 and the fifth unwinding mechanism 270 are arranged on the other side of the welding mechanism. In this way, the first A-side foil material and the first B-side foil material can enter the first welding mechanism 250 better, and the second A-side foil material and the second B-side foil material can enter the second welding mechanism 280 better.

[0080] Further, in some embodiments, the first unwinding mechanism 210, the second unwinding mechanism 220, the third unwinding mechanism 230, the fourth unwinding mechanism 260, the fifth unwinding mechanism 270, and the winding mechanism 30 all have a deviation rectification function. Specifically, taking the first unwinding mechanism 210 as an example, the first unwinding mechanism 210 includes an air shaft and an unwinding roller. The air shaft in the first unwinding mechanism 210 is used for placing the diaphragm material. After the air shaft in the first unwinding mechanism 210 is inflated, it can fix the wound diaphragm material on the air shaft. After the air shaft in the first unwinding mechanism 210 deflates, the diaphragm material can be removed from the air shaft in the first unwinding mechanism 210. Further, the unwinding roller can swing around the air shaft. The air shaft in the first unwinding mechanism 210 can be driven to rotate, so as to unwind the diaphragm material. Further, in some embodiments, in order to enable the first unwinding mechanism 210 to have a deviation rectification function, the air shaft and the unwinding roller in the first unwinding mechanism 210 can be installed on a sliding table. At this time, the sliding table can reciprocate along the axis direction of the air shaft in the first unwinding mechanism 210, so as to realize the movement of the air shaft in the first unwinding mechanism 210. When the air shaft in the first unwinding mechanism 210 moves, it can adjust the unwinding direction of the diaphragm material, so as to achieve the purpose of deviation rectification. The structures of the second unwinding mechanism 220, the third unwinding mechanism 230, the fourth unwinding mechanism 260, and the fifth unwinding mechanism 270 are the same as the principle of the first unwinding mechanism 210. The winding mechanism 30 is similar to the first unwinding mechanism 210. The winding mechanism 30 includes an air shaft and a pressing roller. The finished product material is installed on the air shaft in the winding mechanism 30. The pressing roller can press the finished product material during winding. The air shaft in the winding mechanism 30 can be driven to rotate, so as to wind the finished product material. Further, in order to enable the winding mechanism 30 to have a deviation rectification function, the air shaft and the pressing roller in the winding mechanism 30 can be installed on another sliding table. At this time, the other sliding table can reciprocate along the axis direction of the air shaft in the winding mechanism 30, so as to realize the movement of the air shaft in the winding mechanism 30. When the air shaft in the winding mechanism 30 moves, it can adjust the winding direction of the finished product material, so as to achieve the purpose of deviation rectification.

[0081] In one embodiment, refer Figure 2 、 Figure 3 、 Figure 4, the unwinding and welding unit 200 further includes a first tape connecting assembly 290, a first tension assembly 2200, a first deviation rectifying assembly 2210, a first driving assembly 2220, a second tension assembly 2230, a second deviation rectifying assembly 2240, a first welding mark leveling assembly 2250, a second welding mark leveling assembly 2260, and a dust removing assembly 2270 disposed in the first transportation path 140; further, in some embodiments, the first tension assembly 2200 and the second tension assembly 2230 include a tension swing rod, and the tension swing rod is installed on the first installation part 110; the first deviation rectifying assembly 2210 and the second deviation rectifying assembly 2240 are configured as traveling deviation rectifying structures; the first driving assembly 2220 includes a main driving roller and a driven roller, and the main driving roller and the driven roller can approach and separate from each other. Further, a second pressure regulating cylinder is also provided in the first driving assembly 2220, and the second pressure regulating cylinder can drive the driven roller to approach or separate from the main driving roller. It can be understood that when the driven roller approaches the main driving roller, the distance between the driven roller and the main driving roller decreases at this time, and the pressure on the diaphragm material passing between the main driving roller and the driven roller will be relatively large, and vice versa. The first welding mark leveling assembly 2250 and the second welding mark leveling assembly 2260 can adopt roller pressing and leveling. Further, the welding mark leveling assembly includes double-layer rollers, and the double-layer rollers can approach or separate from each other. When the double-layer rollers approach each other, they can level the welding marks of the finished product material with a relatively large pressure. Further, in some embodiments, one of the double-layer rollers can be a main driving roller. Further, in some embodiments, the dust removing assembly 2270 includes a brush, a magnetic bar, and a brush box. The brush is in a rod-shaped structure and can rotate. The brush is installed in the brush box, and the brush box is connected to a negative pressure dust collector. The dust removal port is configured with air volume and wind speed sensors corresponding to dust cleaning. When the wind pressure is abnormal, the wind speed sensor feeds back to the terminal device. The brush rotates to remove dust from the first finished product material, and the magnetic bar can suck away the iron filings on the first finished product material. For non-iron filings substances, they can be adsorbed by the negative pressure dust collector. The first tape connecting assembly 290 is disposed downstream of the first unwinding mechanism 210 and above the first unwinding mechanism 210. Further, when a diaphragm material is used up and a new diaphragm material is replaced, in order to avoid re-wiring the new diaphragm material, the head end of the new diaphragm material can be connected to the tail end of the previous diaphragm material. At this time, when the tail end of the previous diaphragm material moves in the production line, it can drive the head end of the new diaphragm material to move, thereby avoiding re-wiring the new diaphragm material and further improving the production efficiency.The first tension assembly 2200 is disposed downstream of the first tape connecting assembly 290 and above the first tape connecting assembly 290. It can be understood that the setting of the first tension assembly 2200 helps to prevent the diaphragm material from being slack or overstretched during transmission, reduces the possibility of the diaphragm material shifting or breaking. At the same time, the first tension assembly 2200 can also make the diaphragm material more stable during transmission. The first tension assembly 2200 is arranged above the first tape connecting assembly 290. At this time, the first tension assembly 2200 can provide an upward traction force to the diaphragm material. This traction force can help the diaphragm material enter the subsequent process more smoothly, and at the same time can avoid the friction that may be encountered in the horizontal direction, improve the moving efficiency of the diaphragm material, thereby improving the processing efficiency. At the same time, being arranged above the first tape connecting assembly 290 can also make use of the height space of the frame 100 and improve the space utilization rate. The first deviation rectifying assembly 2210 is disposed downstream of the first tension assembly 2200, upstream of the slitting mechanism 240, and above the first tape connecting assembly 290. At this time, before the diaphragm material enters the slitting mechanism 240, it will first pass through the first deviation rectifying assembly 2210 to correct its deviation and adjust its position accuracy, so that the diaphragm material enters the slitting mechanism 240 with a relatively high position accuracy. At this time, when the slitting mechanism 240 cuts and processes the diaphragm material, it can ensure better processing accuracy.

[0082] The first driving component 2220 is arranged downstream of the slitting mechanism 240. At this time, the first driving component 2220 is to provide a driving force for the diaphragm material so that the diaphragm material can move well in the first transportation path 140. The second tension component 2230 is arranged downstream of the first driving component 2220 and below the first driving component 2220. The second deviation rectifying component 2240 is arranged downstream of the second tension component 2230 and upstream of the first welding mechanism 250. Such an arrangement is to prevent the diaphragm material driven by the first driving component 2220 from directly entering the second deviation rectifying component 2240. At this time, affected by the driving force of the first driving component 2220, the effect of the second deviation rectifying component 2240 during deviation rectification will be poor. To avoid this situation, the second tension component 2230 is arranged between the first driving component 2220 and the second deviation rectifying component 2240, and the second tension component 2230 is arranged below the first driving component 2220. In this way, after the diaphragm material passes through the first driving component 2220 and reaches the second deviation rectifying component 2240, it needs to move a longer path. In this way, when the diaphragm material enters the second deviation rectifying component 2240 and is rectified by the second deviation rectifying component 2240, the influence of the driving force on it can be reduced, thereby ensuring the deviation rectification effect. Further, after the diaphragm material is rectified, it can enter the first welding mechanism 250 with better position accuracy. At this time, the first welding mechanism 250 can process the diaphragm material.

[0083] The first weld mark leveling component 2250 is arranged downstream of the first welding mechanism 250 and upstream of the second welding mechanism 280. The second weld mark leveling component 2260 is arranged downstream of the second welding mechanism 280. The dust removal component 2270 is arranged downstream of the second welding mechanism 280. It can be understood that there will be residual traces or protrusions on the surface of the welded material, which may have an adverse impact on the subsequent processes (such as coating) of the battery current collector pole piece. At the same time, the protrusions are prone to generate metal dust, and the metal dust is likely to cause damage to the battery. By arranging the first weld mark leveling component 2250 downstream of the first welding mechanism 250 and the second weld mark leveling component 2260 downstream of the second welding mechanism 280, the protrusions on the surface of the first finished material can be better removed before entering the gluing, reducing the possibility of subsequent battery damage.

[0084] In one embodiment, referring to Figure 7 , the first mounting portion 110 includes a fourth mounting portion 111 and a fifth mounting portion 112 that are spliced;

[0085] The first unwinding mechanism 210, the second unwinding mechanism 220, the third unwinding mechanism 230, the slitting mechanism 240, the first welding mechanism 250, the first tape connecting assembly 290, the first tension assembly 2200, the first deviation rectifying assembly 2210, the first driving assembly 2220, the second tension assembly 2230, the second deviation rectifying assembly 2240, and the first welding mark leveling assembly 2250 are arranged on the fourth installation part 111; the fourth unwinding mechanism 260, the fifth unwinding mechanism 270, the second welding mechanism 280, the second welding mark leveling assembly 2260, and the dust removing assembly 2270 are arranged on the fifth installation part 112. It can be understood that in the production line, when only the first A-side foil material and the first B-side foil material need to be welded on the first side of the diaphragm material, the fifth installation part 112 can be removed from the production line. Since the fourth installation part 111 and the fifth installation part 112 are spliced, and the fourth unwinding mechanism 260, the fifth unwinding mechanism 270, the second welding mechanism 280, the second welding mark leveling assembly 2260, and the dust removing assembly 2270 are arranged on the fifth installation part 112, after the fifth installation part 112 is removed from the production line, the mechanisms arranged on the fifth installation part 112 are also removed accordingly, and the production line can be updated at a relatively fast speed. Similarly, when it is necessary to weld the second A-side foil material and the second B-side foil material on the second side of the diaphragm material, the fifth installation part 112 can be connected to the production line at this time. It should be noted that when there is only the fourth installation part 111 and no fifth installation part 112 in the production line, the dust removing assembly 2270 can be arranged in the fourth installation part 111 or in the third installation part 130. Further, if the first installation part 110 includes the spliced fourth installation part 111 and fifth installation part 112, at this time, the first unwinding mechanism 210, the second unwinding mechanism 220, the third unwinding mechanism 230, the slitting mechanism 240, the first welding mechanism 250, the first tape connecting assembly 290, the first tension assembly 2200, the first deviation rectifying assembly 2210, the first driving assembly 2220, the second tension assembly 2230, the second deviation rectifying assembly 2240, the first welding mark leveling assembly 2250, and the fourth unwinding mechanism 260 are arranged on the fourth installation part 111, the fifth unwinding mechanism 270, the second welding mechanism 280, the second welding mark leveling assembly 2260, and the dust removing assembly 2270 are arranged on the fifth installation part 112. At this time, if it is necessary to remove the second welding mechanism 280 from the production line, only the fifth installation part 112 needs to be removed from the production line. Since the fourth unwinding mechanism 260 is arranged on the fourth installation part 111, at this time, only the fourth unwinding mechanism 260 needs to be disassembled separately, or the fourth unwinding mechanism 260 does not need to be used. Whether the fourth unwinding mechanism 260 is disassembled or not will not affect the use of the production line.

[0086] In one embodiment, with reference to Figure 2 , Figure 5 , Figure 6 , the rack 100 is provided with a sixth transport path 190. The sixth transport path 190 is provided on the second mounting portion 120 and the third mounting portion 130. The head end of the sixth transport path 190 is placed on the second mounting portion 120 and can receive the first finished product material output from the tail end of the first transport path 140. The tail end of the sixth transport path 190 is placed on the third mounting portion 130. The sixth transport path 190 includes a plurality of transport rollers 20. It can be understood that the sixth transport path 190 is divided into two connected sections, one section is provided on the second mounting portion 120, and the other section is provided on the third mounting portion 130. The gluing mechanism 300 includes a first gluing assembly 310 and a second gluing assembly 320 provided in the sixth transport path 190. The first gluing assembly 310 is used to glue the A side of the first finished product material, and the second gluing assembly 320 is used to glue the B side of the first finished product material. The first gluing assembly 310 and the second gluing assembly 320 adopt a tunnel structure. Further, in some embodiments, when the second mounting portion 120 is spliced with the first mounting portion 110 and the third mounting portion 130, a third tension assembly 500, a second drive assembly 600, a fourth tension assembly 40, a third deviation correction assembly 700, and a fourth deviation correction assembly 800 can be provided in the sixth transport path 190. The third tension assembly 500 is provided downstream of the dust removal assembly 2270. The second drive assembly 600 is provided downstream of the third tension assembly 500. The fourth tension assembly 40 is provided downstream of the second drive assembly 600. The third deviation correction assembly 700 is provided downstream of the fourth tension assembly 40. The first gluing assembly 310 is provided downstream of the third deviation correction assembly 700. The fourth deviation correction assembly 800 is provided downstream of the first gluing assembly 310. The second gluing assembly 320 is provided downstream of the fourth deviation correction assembly 800. It can be understood that under the action of the third deviation correction assembly 700 and the fourth deviation correction assembly 800, the first finished product material can enter the first gluing assembly 310 and the second gluing assembly 320 with better position accuracy, thereby ensuring the quality of gluing. Further, some structures in the sixth transport path 190 can be installed on the second mounting portion 120. For example, the third tension assembly 500 and the second drive assembly 600 are installed on the second mounting portion 120.

[0087] Further, a second detection component 330 and a third detection component 340 are also provided in the sixth transportation path 190. Both the second detection component 330 and the third detection component 340 are configured as CCD cameras. The second detection component 330 is provided upstream of the first glue application component 310 and downstream of the fourth rectification component 800. The third detection component 340 is provided downstream of the second glue application component 320. The first finished product material will be detected by the second detection component 330 before entering the first glue application component 310. The material output by the first glue application component 310 will be detected by the second detection component 330 before entering the second glue application component 320, and its position accuracy will be fed back to the rectification component. Specifically, the second detection component 330 is electrically connected to the third rectification component 700, and the third detection component 340 is electrically connected to the fourth rectification component 800. The second detection component 330 and the third detection component 340 are configured as visual detection components. Specifically, the visual detection component includes a CCD camera.

[0088] In one embodiment, referring to Figure 2 、 Figure 5, the second installation part 120 is provided with a seventh transportation path 1100. The second finished product material is input into the seventh transportation path 1100 through the head end of the seventh transportation path 1100. The seventh transportation path 1100 includes a plurality of transportation rollers 20. The winding mechanism 30 is arranged at the end of the seventh transportation path 1100. Further, in some embodiments, when the second installation part 120 is spliced with the first installation part 110 and the third installation part 130, a third driving component 900 and a fifth tension component 10 can be arranged in the sixth transportation path 190 at this time. The third driving component 900 is arranged downstream of the second gluing component 320, and the fifth tension component 10 is arranged downstream of the third driving component 900 and upstream of the winding mechanism 30. Further, the modular production line further includes a detection and labeling component 400. The detection and labeling component 400 includes a detection module 410 and a labeling module 420. The detection module 410 is arranged downstream of the second weld mark leveling component 2260 and upstream of the dust removal component 2270. The labeling module 420 is arranged upstream of the winding mechanism 30 and downstream of the dust removal component 2270. Further, in some embodiments, there are two labeling modules 420, namely a first labeling module 421 and a second labeling module 422. The first labeling module 421 is installed on the second installation part 120, and the second labeling module 422 is installed on the third installation part 130. The second installation part 120 is spliced with the first installation part 110 and the third installation part 130. With such a setting, if the gluing mechanism 300 needs to be removed from the production line, at this time, the second labeling module 422 is taken out of the production line along with the third installation part 130. However, the first labeling module 421 is arranged in the second installation part 120, and the first labeling module 421 can still be retained in the production line, so as to ensure the normal operation of the detection and labeling component 400. It can be understood that if the gluing mechanism 300 is arranged in the production line, the first labeling module 421 is installed on the second installation part 120, and the second labeling module 422 is installed on the third installation part 130. At the same time, if the gluing mechanism 300 is removed, a section of the sixth transportation path 190 located in the second installation part 120 can be directly connected to the seventh transportation path 1100, so that the production line can still operate normally after the gluing mechanism 300 is removed. Further, the detection module 410 is configured as a visual detection module. Specifically, the visual detection module includes a ccd camera. The labeling module 420 can paste a colored label on the finished product material. When the detection module 410 detects that the weld mark in the finished product material is unqualified, a corresponding electrical signal is generated and fed back to the labeling module 420. At this time, the labeling module 420 labels the unqualified part of the finished product material. In this way, when the finished product material is processed subsequently, the staff can find the label and cut and discard the part of the finished product material where the label is pasted.Meanwhile, by detecting the labeling component 400, it is also possible to achieve a quality inspection effect on the modular production line itself. When the number of labels pasted on the finished products is large, it can indirectly reflect that there are abnormalities in the welding mechanism or the welding mark leveling component in the modular production line. At this time, the maintenance personnel can repair the welding mechanism or the welding mark leveling component. It can be understood that the labels are pasted on the finished products by means of adhesion. Further, in one embodiment, the detection module 410 is configured as two, and the two detection modules 410 respectively detect the A side and the B side of the first finished product.

[0089] Further, in some embodiments, referring to Figure 2 、 Figure 5 、 Figure 6 , a second tape connecting component 50 is further provided in the seventh transportation path 1100. The second tape connecting component 50 is arranged above the winding mechanism 30 and below the first labeling module 421. Further, the winding mechanism 30 is arranged downstream of the second tape connecting component 50. The second tape connecting component is arranged downstream of the fifth tension component 10.

[0090] Further, in some embodiments, in order to cooperate with the use of the deviation rectifying component arranged in the first transportation path 140, a first detection component 2280 is further provided on the production line. The first detection component is configured as multiple and is respectively arranged close to the deviation rectifying component. It should be noted that the first detection component is used to detect whether the material is offset during transportation. If it is offset, it will be timely fed back to the corresponding deviation rectifying component, and the deviation rectifying component will rectify and adjust the transportation trajectory of the material.

[0091] The present invention also proposes a production process for battery current collector polar plates. This production process for battery current collector polar plates is applied to a modular production line. The specific structure of the modular production line refers to the above embodiments. Since this production process for battery current collector polar plates adopts all the technical solutions of the above embodiments, it has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0092] In one embodiment, referring to Figure 8 , the production process for battery current collector polar plates includes:

[0093] S10. The first unwinding mechanism 210 unwinds the separator material, and the separator material moves along the first transportation path 140 and enters the first welding mechanism 250. The second unwinding mechanism 220 unwinds the first A-side foil material, and the first A-side foil material moves along the second transportation path 150 and enters the first welding mechanism 250. The third unwinding mechanism 230 unwinds the first B-side foil material, and the first B-side foil material moves along the third transportation path 160 and enters the first welding mechanism 250. The first welding mechanism 250 welds the first A-side foil material and the first B-side foil material to the first side of the separator material;

[0094] S20. The material processed by the first welding mechanism 250 moves along the first transportation path 140 and enters the second welding mechanism 280. The fourth unwinding mechanism 260 unwinds the second A-side foil material, and the second A-side foil material enters the second welding mechanism 280 along the fourth transportation path 170. The fifth unwinding mechanism 270 unwinds the second B-side foil material, and the second B-side foil material enters the second welding mechanism 280 along the fifth transportation path 180. The second welding mechanism 280 welds the second A-side foil material and the second B-side foil material to the second side of the separator material. The end of the first transportation path 140 can output the first finished product material;

[0095] S30. The sixth transportation path 190 receives the first finished product material, and the first finished product material moves along the sixth transportation path 190. The gluing mechanism 300 applies glue to the first finished product material. The end of the sixth transportation path 190 can output the second finished product material;

[0096] S40. The seventh transportation path 1100 receives the second finished product material, and the second finished product material moves along the seventh transportation path 1100. The winding mechanism 30 winds the second finished product material.

[0097] It should be noted that in the modular production line applied to the battery current collector pole piece production process, there are a first installation part 110, a second installation part 120, and a third installation part 130. That is to say, in the modular production line, there are an unwinding and welding unit 200, a gluing mechanism 300, a winding mechanism 30, and other components arranged on the transportation path. It should be noted that on the one hand, adopting the above process can facilitate the assembly and disassembly of the production line in cooperation with the spliced first installation part 110, second installation part 120, and third installation part 130, and on the other hand, it can also improve production efficiency. It should be noted that if the production line does not have a gluing mechanism 300, step S30 can be omitted at this time.

[0098] The above are only exemplary embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A modular production line, characterized in that: include: A frame, the frame comprising a first mounting portion, a second mounting portion, and a third mounting portion that are spliced ​​together; An unwinding and welding unit is installed on the first installation portion, and the unwinding and welding unit can unwind and weld the material and output the first finished product material; A gluing mechanism, disposed downstream of the unwinding and welding unit and mounted on the third mounting portion, the gluing mechanism being capable of receiving the first finished material, gluing it, and outputting a second finished material; and a winding mechanism, which is disposed downstream of the gluing mechanism and mounted on the second mounting portion, and the winding mechanism is capable of winding the second finished material; The second mounting portion is spliced ​​with the first mounting portion and the third mounting portion; The first installation portion is provided with a first transport path, a second transport path, and a third transport path; The unwinding and welding unit comprises a first unwinding mechanism arranged at the head end of the first transport path, a second unwinding mechanism arranged at the head end of the second transport path, a third unwinding mechanism arranged at the head end of the third transport path, a slitting mechanism arranged in the first transport path, and a first welding mechanism, wherein the slitting mechanism is arranged downstream of the first unwinding mechanism, the first welding mechanism is arranged downstream of the slitting mechanism, the ends of the second transport path and the third transport path can be connected to the first transport path, and the ends of the second transport path and the third transport path are arranged downstream of the slitting mechanism and upstream of the first welding mechanism; The first unwinding mechanism is used for placing the diaphragm material, and the diaphragm material can move along the first transport path; The second unwinding mechanism is used for placing the first A-side foil material, and the first A-side foil material can move along the second transport path; The third unwinding mechanism is used for placing the first B-side foil material, and the first B-side foil material can move along the third transport path; The diaphragm material is provided with a first side and a second side, the first side and the second side are arranged opposite to each other, the first welding mechanism can weld the first A-side foil material and the first B-side foil material to the first side of the diaphragm material, and the end of the first transport path can output the first finished product material; The gluing mechanism comprises a first gluing component and a second gluing component arranged in the third mounting portion, the first gluing component being used for gluing the A surface of the first finished material, and the second gluing component being used for gluing the B surface of the first finished material; The second installation portion is provided with a seventh transport path, and the second finished material is input into the seventh transport path through the head end of the seventh transport path; The winding mechanism is arranged at the end of the seventh transport path. The seventh transport path is also provided with a second belt connecting assembly. The winding mechanism is arranged downstream of the second belt connecting assembly.

2. The modular production line according to claim 1, characterized in that: The first installation portion is provided with a fourth transport path and a fifth transport path; The unwinding and welding unit further comprises a fourth unwinding mechanism disposed at the head end of the fourth transport path, a fifth unwinding mechanism disposed at the head end of the fifth transport path, and a second welding mechanism disposed in the first transport path, wherein the second welding mechanism is disposed downstream of the first welding mechanism, and the ends of the fourth transport path and the fifth transport path can be connected to the first transport path, and the ends of the fourth transport path and the fifth transport path are disposed downstream of the first welding mechanism and upstream of the second welding mechanism; The fourth unwinding mechanism is used for placing the second A-side foil material, and the second A-side foil material can move along the fourth transport path; The fifth unwinding mechanism is used for placing the second B-side foil material, and the second B-side foil material can move along the fifth transport path; The second welding mechanism can weld the second A-side foil material and the second B-side foil material to the second side of the diaphragm material, and the end of the first transport path can output a first finished product material.

3. The modular production line according to claim 2, characterized in that: The second transport path and the fourth transport path are arranged on one side of the first transport path; The third transport path and the fifth transport path are arranged on the other side of the first transport path.

4. The modular production line according to claim 3, characterized in that: The unwinding and welding unit further includes a first belt splicing assembly, a first tension assembly, a first deviation correcting assembly, a first driving assembly, a second tension assembly, a second deviation correcting assembly, a first welding and printing leveling assembly, a second welding and printing leveling assembly, and a dust removal assembly arranged in the first transport path; The first belt connecting assembly is arranged downstream of the first unwinding mechanism and above the first unwinding mechanism, the first tension assembly is arranged downstream of the first belt connecting assembly and above the first belt connecting assembly, the first deviation correcting assembly is arranged downstream of the first tension assembly and upstream of the slitting mechanism and above the first belt connecting assembly, the first driving assembly is arranged downstream of the slitting mechanism, the second tension assembly is arranged downstream of the first driving assembly and below the first driving assembly, the second deviation correcting assembly is arranged downstream of the second tension assembly and upstream of the first welding mechanism, the first welding and printing flattening assembly is arranged downstream of the first welding mechanism and upstream of the second welding mechanism, the second welding and printing flattening assembly is arranged downstream of the second welding mechanism, and the dust removal assembly is arranged downstream of the second welding mechanism.

5. The modular production line according to claim 4, characterized in that: The first mounting portion includes a fourth mounting portion and a fifth mounting portion that are spliced ​​together; The first unwinding mechanism, the second unwinding mechanism, the third unwinding mechanism, the slitting mechanism, the first welding mechanism, the first tape splicing assembly, the first tension assembly, the first deviation correcting assembly, the first driving assembly, the second tension assembly, the second deviation correcting assembly, and the first welding and printing leveling assembly are arranged on the fourth mounting portion; The fourth unwinding mechanism, the fifth unwinding mechanism, the second welding mechanism, the second welding and printing leveling assembly, and the dust removal assembly are arranged on the fifth mounting portion.

6. The modular production line according to claim 5, characterized in that: The frame is provided with a sixth transport path, the sixth transport path is provided at the second mounting portion and the third mounting portion, the head end of the sixth transport path is placed at the second mounting portion, and is capable of receiving the first finished material outputted from the end of the first transport path, and the end of the sixth transport path is placed at the third mounting portion; The sixth transport path is also provided with a second detection component and a third detection component. The second detection component is provided upstream of the first gluing component, and the third detection component is provided upstream of the second gluing component and downstream of the first gluing component.

7. The modular production line according to claim 6, characterized in that: The modular production line also includes a detection and labeling component, which includes a detection module and a labeling module. The detection module is arranged downstream of the second welding and printing and leveling component and upstream of the dust removal component, and the labeling module is arranged upstream of the winding mechanism and downstream of the dust removal component.

8. A battery current collector electrode production process, applied to a modular production line, wherein the modular production line is a modular production line as claimed in claim 7, characterized in that: The battery current collector electrode production process comprises: The first unwinding mechanism unwinds the diaphragm material, the diaphragm material moves along the first transport path and enters the first welding mechanism, the second unwinding mechanism unwinds the first A-side foil material, the first A-side foil material moves along the second transport path and enters the first welding mechanism, the third unwinding mechanism unwinds the first B-side foil material, the first B-side foil material moves along the third transport path and enters the first welding mechanism, and the first welding mechanism welds the first A-side foil material and the first B-side foil material to the first side of the diaphragm material; The material processed by the first welding mechanism moves along the first transport path and enters the second welding mechanism. The fourth unwinding mechanism unwinds the second A-side foil material, and the second A-side foil material enters the second welding mechanism along the fourth transport path. The fifth unwinding mechanism unwinds the second B-side foil material, and the second B-side foil material enters the second welding mechanism along the fifth transport path. The second welding mechanism welds the second A-side foil material and the second B-side foil material to the second side of the diaphragm material. The first finished material can be output at the end of the first transport path. The sixth transport path receives the first finished material, the first finished material moves along the sixth transport path, the gluing mechanism glues the first finished material, and the end of the sixth transport path can output a second finished material; The seventh transport path receives the second finished material, the second finished material moves along the seventh transport path, and the winding mechanism winds the second finished material.

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