A highly integrated pole piece production system

Abstract

The utility model relates to the technical field of battery manufacturing equipment, and in particular to a highly integrated electrode production system. The highly integrated electrode production system provided by the utility model includes: a frame, a positive electrode production line and a negative electrode production line arranged on the frame; the positive electrode production line and the negative electrode production line are stacked; the positive electrode production line is used to make positive electrode sheets from positive electrode foils, and the negative electrode production line is used to make negative electrode sheets from negative electrode foils, and the positive electrode production line and the negative electrode production line can be produced synchronously. The positive electrode production line and the negative electrode production line are stacked, and the positive electrode production line and the negative electrode production line are vertically integrated in the upper and lower layers and concentrated in the same production area, breaking through the traditional segmented production model, improving production efficiency and product consistency, reducing the length of the production line, greatly reducing the land used for factory buildings, saving energy consumption, reducing production costs, and canceling frequent winding and unwinding, making production more concise and intelligent.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing equipment, in particular to a highly integrated pole piece production system. Background Art

[0002] Traditional battery pole piece production is carried out in separate lines and workshops, usually divided into positive pole piece production lines and negative pole piece production lines. Under the positive and negative pole production lines, they are respectively divided into batching workshops, coating workshops, rolling workshops, slitting / die-cutting workshops and winding workshops. The pole pieces need to be circulated between workshops after winding and unwinding. Frequent pole piece splicing leads to discontinuous production. On the one hand, frequent winding and unwinding and splicing increase the scrapped materials and affect production efficiency. On the other hand, the turnover process has a high risk of abnormalities, which will eventually affect the consistency of the pole pieces. Excessive manual intervention leads to an increase in the frequency of defects. At the same time, the decentralized workshop layout is not conducive to centralized control and unmanned supervision. It relies too much on the proficiency of employees' operations, increases the operating costs of the production line, and makes the utilization rate of the factory low and the energy consumption increased, greatly increasing the cost of battery production.

[0003] Today's new energy industry is becoming increasingly mature. In the fierce market competition environment, the traditional production model must be innovated. The new generation of technological breakthroughs will undoubtedly move towards the goal of creating a high-capacity, low-cost, and low-defect unmanned battery production line.

[0004] Therefore, how to provide a highly integrated electrode production system is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The purpose of the utility model is to provide a highly integrated electrode production system to solve the technical problems of the traditional production mode of divided lines and workshops, such as long production lines, which are not conducive to improving production speed, low process consistency, reduced production yield, increased product costs and reduced market competitiveness.

[0006] The utility model provides a highly integrated electrode production system, comprising: a frame, a positive electrode production line and a negative electrode production line arranged on the frame;

[0007] The positive electrode sheet production line and the negative electrode sheet production line are stacked;

[0008] The positive electrode sheet production line is used to make positive electrode sheets from positive electrode foils, and the negative electrode sheet production line is used to make negative electrode sheets from negative electrode foils, and the positive electrode sheet production line and the negative electrode sheet production line can produce synchronously.

[0009] As a further technical solution, it also includes an intelligent batching device;

[0010] The intelligent batching device is arranged upstream of the positive electrode sheet production line, and the intelligent batching device is used to prepare positive electrode slurry and can transport the positive electrode slurry to the positive electrode sheet production line, and the positive electrode sheet production line can apply the positive electrode slurry to the dressing areas on the upper and lower surfaces of the positive electrode foil;

[0011] The intelligent batching device is arranged upstream of the negative electrode sheet production line, and is used to prepare negative electrode slurry, and can transport the negative electrode slurry to the negative electrode sheet production line, and the negative electrode sheet production line can apply the negative electrode slurry to the dressing areas on the upper and lower surfaces of the negative electrode foil.

[0012] As a further technical solution, the intelligent batching device includes a raw material disassembly and assembly mechanism, a premixing mechanism, a dispersing mechanism, a slurry storage mechanism and an automatic guided vehicle. The raw material disassembly and assembly mechanism is used to unpack the raw materials and transport them to the premixing mechanism, the premixing mechanism is used to stir the raw materials and transport them to the dispersing mechanism, the dispersing mechanism is used to disperse the raw materials to obtain slurry and transport it to the slurry storage mechanism, the slurry storage mechanism is used to vacuum store and stir the slurry at a constant temperature, and the automatic guided vehicle is used to transport the raw materials from the warehouse to the raw material disassembly and assembly mechanism and to transport the slurry storage mechanism to the corresponding slurry loading point of the positive electrode sheet production line or the negative electrode sheet production line.

[0013] As a further technical solution, it also includes at least one first automatic unwinding and splicing device and at least one second automatic unwinding and splicing device, wherein the first automatic unwinding and splicing device is located upstream of the positive electrode sheet production line and is used to unwind and splice the positive electrode foil, and the second automatic unwinding and splicing device is located upstream of the negative electrode sheet production line and is used to unwind and splice the negative electrode foil;

[0014] Along the production direction of the positive electrode sheet production line, the positive electrode sheet production line includes at least one first double-sided coating device, at least one first suspension baking device, at least one first rolling device and at least one first film-making device arranged in sequence, and the first double-sided coating device is used to coat the positive electrode slurry on the dressing areas on the upper and lower surfaces of the positive electrode foil, the first suspension baking device is used to dry the positive electrode slurry on the upper and lower surfaces of the positive electrode foil, the first rolling device is used to roll the dressing areas on the upper and lower surfaces of the positive electrode foil, and the first film-making device is used to make the positive electrode sheet;

[0015] And / or, along the production direction of the negative electrode sheet production line, the negative electrode sheet production line includes at least one second double-sided coating device, at least one second suspension baking device, at least one second rolling device, at least one third rolling device and at least one second film-making device arranged in sequence, and the second double-sided coating device is used to coat the negative electrode slurry on the dressing areas on the upper and lower surfaces of the negative electrode foil, the second suspension baking device is used to dry the negative electrode slurry on the upper and lower surfaces of the negative electrode foil, the second rolling device and the third rolling device are both used to roll the dressing areas on the upper and lower surfaces of the negative electrode foil, and the second film-making device is used to make the negative electrode sheet.

[0016] As a further technical solution, the first automatic unwinding and splicing device and the second automatic unwinding and splicing device each include an unwinding mechanism, a positioning mechanism, a cutting mechanism, a first gluing mechanism, a first buffer mechanism, a material unloading mechanism, a splicing mechanism and a first deviation correcting mechanism;

[0017] The unwinding mechanism is used to unwind a new roll of foil, the positioning mechanism is used to fix the end of an old roll of foil, the cutting mechanism is used to cut the end of the old roll of foil, the first gluing mechanism is used to stick double-sided tape on the end of the old roll of foil, the first buffer mechanism is used to store the foil in motion, the unloading mechanism is used to unload the old roll after the end of the old roll of foil is cut off, the connecting mechanism is used to connect the starting end of a new roll of foil with the end of the old roll of foil through the double-sided tape, and the first deviation correction mechanism is used to correct the foil.

[0018] As a further technical solution, the positive electrode sheet production line includes the first double-sided coating device, and the first double-sided coating device includes a first traction mechanism, a first coating die head and a second coating die head, the first traction mechanism is used to traction the positive electrode foil, and the first coating die head and the second coating die head are respectively located on the upper and lower sides of the positive electrode foil;

[0019] The negative electrode sheet production line includes the second double-sided coating device, and the second double-sided coating device includes a second traction mechanism, a third coating die head and a fourth coating die head, the second traction mechanism is used to pull the negative electrode foil, and the third coating die head and the fourth coating die head are respectively located on the upper and lower sides of the negative electrode foil.

[0020] As a further technical solution, the positive electrode sheet production line includes the first suspension baking device, the negative electrode sheet production line includes the second suspension baking device, and the first suspension baking device and the second suspension baking device both include a multi-section oven;

[0021] The oven is provided with an upper air outlet, an upper air exhaust outlet, a lower air outlet and a lower air exhaust outlet.

[0022] As a further technical solution, the positive electrode sheet production line includes the first rolling device, the negative electrode sheet production line includes the second rolling device and the third rolling device, and the first rolling device, the second rolling device and the third rolling device all include a third traction mechanism, a rolling mechanism, a second flattening mechanism, a second buffer mechanism, a second deviation correction mechanism and a first detection mechanism;

[0023] The third traction mechanism is used to pull the pole piece through the second cache mechanism, the second deviation correction mechanism, the rolling mechanism and the first detection mechanism in sequence, and the second cache mechanism is used to cache the pole piece, the second deviation correction mechanism is used to correct the pole piece, the rolling mechanism is used to roll the dressing area on the upper and lower surfaces of the foil, the second flattening mechanism is used to flatten the pole piece, and the first detection mechanism is used to detect the thickness of the pole piece after the rolling mechanism.

[0024] As a further technical solution, the positive electrode sheet production line includes the first sheet making device, the negative electrode sheet production line includes the second sheet making device, and the first sheet making device and the second sheet making device both include a fourth traction mechanism, a third buffer mechanism, a third deviation correction mechanism, a second detection mechanism and a cutting mechanism;

[0025] The fourth traction mechanism is used to pull the pole piece through the third cache mechanism, the third deflection correction mechanism, the cutting mechanism and the second detection mechanism in sequence, and the third cache mechanism is used to cache the pole piece, the third deflection correction mechanism is used to correct the pole piece, the cutting mechanism is used to cut the pole piece, and the second detection mechanism is used to detect the appearance of the pole piece.

[0026] As a further technical solution, it also includes a winding device, which is arranged downstream of the positive electrode sheet production line and the negative electrode sheet production line and is used to make the positive electrode sheet and the negative electrode sheet into a winding core.

[0027] Compared with the prior art, the highly integrated electrode production system provided by the utility model has the following technical advantages:

[0028] The utility model provides a highly integrated electrode sheet production system, comprising: a frame, a positive electrode sheet production line and a negative electrode sheet production line arranged on the frame; the positive electrode sheet production line and the negative electrode sheet production line are stacked; the positive electrode sheet production line is used to make positive electrode sheets from positive electrode foil, and the negative electrode sheet production line is used to make negative electrode sheets from negative electrode foil, and the positive electrode sheet production line and the negative electrode sheet production line can produce synchronously.

[0029] The positive electrode sheet production line and the negative electrode sheet production line are stacked, and the upper and lower layers of the positive electrode sheet production line and the negative electrode sheet production line are vertically integrated and concentrated in the same production area, breaking through the traditional segmented production mode, improving production efficiency and product consistency, reducing the length of the production line, greatly reducing factory land, saving energy consumption, reducing production costs, and eliminating frequent winding and unwinding, making production simpler and smarter. At the same time, the stacked arrangement allows the positive electrode sheet production line and the negative electrode sheet production line to be independently controlled and produced to avoid mutual interference. In addition, since the positive electrode sheet production line and the negative electrode sheet production line are stacked, the manufactured positive electrode sheets and negative electrode sheets can directly enter the winding device to make winding cores, which can further improve production efficiency and product consistency.

[0030] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of a highly integrated electrode production system provided by an embodiment of the utility model;

[0033] Figure 2 A partial enlarged view of the intelligent batching device provided in an embodiment of the utility model;

[0034] Figure 3 A partially enlarged schematic diagram of a double-sided coating device and a suspended baking device provided in an embodiment of the utility model;

[0035] Figure 4 A partially enlarged schematic diagram of a rolling device and a film-making device provided in an embodiment of the utility model;

[0036] Figure 5 A partially enlarged schematic diagram of a winding device provided in an embodiment of the utility model;

[0037] Figure 6 A layout diagram of a single pole piece connected to a winding device provided in an embodiment of the utility model;

[0038] Figure 7 A layout diagram of multiple pole pieces connected to a winding device provided in an embodiment of the utility model;

[0039] Figure 8A setting mode of the suspension baking device when the A / B surfaces are coated separately provided in the embodiment of the utility model;

[0040] Fig. 9 This is another configuration of the suspended baking device when the A / B surfaces are coated separately provided in the embodiment of the utility model.

[0041] Icons: 1-premixing mechanism; 2-dispersion mechanism; 3-slurry storage mechanism; 4-automatic guided vehicle; 5-unwinding mechanism; 6-feeding mechanism; 7-cutting mechanism; 8-joining and gluing mechanism; 9-first traction mechanism; 10-first buffer mechanism; 11-first deviation correction mechanism; 12-first coating die head; 13-second coating die head; 14-back roller; 15-first film detection mechanism; 16-second film detection mechanism; 17-suspended baking device; 18-roller mechanism; 19-first detection mechanism; 20-second flattening mechanism; 21-die-cutting mechanism; 22-slitting mechanism; 23-slitting detection mechanism; 24-die-cutting detection mechanism; 25-diaphragm unwinding mechanism; 26-diaphragm; 27-upper layer pole piece; 28-lower layer pole piece; 29-winding needle; 30-pole core; 31-upper production line; 32-lower production line; 33-separation layer; 34-intelligent batching device; 35-double-sided coating device; 36-roller pressing device; 37-film making device; 38-winding device; 39-first automatic unwinding and splicing device; 40-second automatic unwinding and splicing device; 41-first double-sided coating device; 42-first suspended baking device; 43-first roller pressing device; 44-first film making device; 45-second double-sided coating device; 46-second suspended baking device; 47-second roller pressing device; 48-second film making device; 49-winding device; 50-unwinding device; 51-third traction mechanism; 52-fourth traction mechanism; 53-second cache mechanism; 54-second deviation correction mechanism; 55-third cache mechanism; 56-third deviation correction mechanism; 57-fifth traction mechanism; 58-fourth cache mechanism; 59-fourth deviation correction mechanism. DETAILED DESCRIPTION

[0042] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0046] The present invention will be further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0047] Specific structure such as Figures 1 to 9 shown.

[0048] The present embodiment provides a highly integrated electrode sheet production system, comprising: a frame, a positive electrode sheet production line and a negative electrode sheet production line arranged on the frame; the positive electrode sheet production line and the negative electrode sheet production line are stacked; the positive electrode sheet production line is used to make positive electrode sheets from positive electrode foil, and the negative electrode sheet production line is used to make negative electrode sheets from negative electrode foil, and the positive electrode sheet production line and the negative electrode sheet production line can produce synchronously.

[0049] In this embodiment, the positive electrode sheet production line and the negative electrode sheet production line are stacked, and the positive electrode sheet production line and the negative electrode sheet production line are vertically integrated in the upper and lower layers and concentrated in the same production area, breaking through the traditional segmented production mode, improving production efficiency and product consistency, reducing the length of the production line, greatly reducing the plant land, saving energy consumption, reducing production costs, eliminating frequent winding and unwinding, making production simpler and smarter, and at the same time stacking, so that the positive electrode sheet production line and the negative electrode sheet production line can be independently controlled and produced to avoid mutual interference. In addition, because the positive electrode sheet production line and the negative electrode sheet production line are stacked, the manufactured positive electrode sheets and negative electrode sheets can directly enter the winding device 38 to make winding cores, which can further improve production efficiency and product consistency.

[0050] Specifically, the highly integrated electrode production system includes a frame on which a double-layer structure production line is arranged. The double-layer structure production line is divided into an upper production line 31 and a lower production line 32. The upper and lower production lines 32 are concentrated in the same production area. The devices in the production lines on different layers in the same production area are all installed on the frame. The upper and lower production lines 32 do not interfere with each other. The positive and negative electrode sheets can be arranged on the upper or lower production line 32 for production, that is, the positive electrode sheet production line and the negative electrode sheet production line are located one on the upper layer and the other on the lower layer. Preferably, the upper production line 31 is the positive electrode sheet production line, and the lower production line 32 is the negative electrode sheet production line.

[0051] In this embodiment, no partition may be set between the upper production line 31 and the lower production line 32 on the frame, that is, one is directly located on the upper side and the other is located on the lower side; however, a partition may also be set, that is, a partition layer 33 is set between the upper production line 31 and the lower production line 32, and the partition layer is located on the frame. The partition layer 33 can be a sealed isolation plate, and the temperature, air pressure and humidity in the isolation plate are independently controlled. The partition layer 33 divides the same production area into an upper and lower layer, and the upper and lower layers do not interfere with each other. The positive and negative electrode sheets can be arranged on the upper or lower production line 32 for production respectively.

[0052] The present embodiment is not limited thereto, and the upper and lower production lines may be located on upper and lower floors, and the partition layer 33 is a floor plate between the upper and lower floors, and the floors are separated and the temperature, air pressure and humidity are controlled separately.

[0053] The optional technical solution of this embodiment also includes an intelligent batching device 34; the intelligent batching device 34 is used to prepare positive electrode slurry, and can transport the positive electrode slurry to the positive electrode sheet production line, and the positive electrode sheet production line can apply the positive electrode slurry to the dressing area on the upper and lower surfaces of the positive electrode foil; and / or, the intelligent batching device 34 is used to prepare negative electrode slurry, and can transport the negative electrode slurry to the negative electrode sheet production line, and the negative electrode sheet production line can apply the negative electrode slurry to the dressing area on the upper and lower surfaces of the negative electrode foil.

[0054] In this embodiment, the intelligent batching device 34 is concentrated in the same production area together with the positive electrode sheet production line and the negative electrode sheet production line, so as to further improve the production efficiency and product consistency, reduce the length of the production line, greatly reduce the factory land, save energy consumption, reduce production costs, and make production more concise and intelligent.

[0055] In this embodiment, if the positive electrode sheet is produced alone, only the intelligent batching device 34 is needed to prepare the positive electrode slurry and transport it to the positive electrode sheet production line. If the negative electrode sheet is produced alone, only the intelligent batching device 34 is needed to prepare the negative electrode slurry and transport it to the negative electrode sheet production line. If they are produced simultaneously, the intelligent batching device 34 for preparing the positive electrode slurry and the intelligent batching device 34 for preparing the negative electrode slurry are set at the same time to realize the synchronous production of the positive electrode sheet and the negative electrode sheet. In addition, the intelligent batching device 34 can be set at any position in the same production area as the positive electrode sheet production line and the negative electrode sheet production line according to the needs, as long as the needs are met.

[0056] In the optional technical scheme of the present embodiment, an intelligent batching device 34 for preparing positive electrode slurry is provided upstream of the positive electrode sheet production line, and an intelligent batching device 34 for preparing negative electrode slurry is provided upstream of the negative electrode sheet production line; the intelligent batching device 34 includes a raw material disassembly and assembly mechanism, a premixing mechanism 1, a dispersing mechanism 2, a slurry storage mechanism 3 and an automatic guided vehicle 4, the raw material disassembly and assembly mechanism is used to unpack the raw materials and convey them to the premixing mechanism 1, the premixing mechanism 1 is used to stir the raw materials and convey them to the dispersing mechanism 2, the dispersing mechanism 2 is used to disperse the raw materials to obtain slurry and convey it to the slurry storage mechanism 3, the slurry storage mechanism 3 is used to vacuum store and stir the slurry at a constant temperature, and the automatic guided vehicle 4 is used to transport the raw materials from the warehouse to the raw material disassembly and assembly mechanism and to transport the slurry storage mechanism 3 to the corresponding slurry loading point of the positive electrode sheet production line or the negative electrode sheet production line.

[0057] In this embodiment, the same highly integrated electrode production system includes at least two sets of intelligent batching devices 34, which are used to prepare positive and negative electrode slurries respectively. The automatic guided vehicle 4 takes the raw materials from the warehouse and places them in the preset disassembly and assembly mechanism. There are at least two disassembly and assembly mechanisms to unpack the active material, conductive agent, binder and lithium supplement respectively. The unpacked raw materials are screened and iron-removed and then transported to the premixing mechanism 1 through a pipeline. The premixing mechanism 1 stirs two or more raw materials, and then further transports the stirred materials to the dispersion mechanism 2 for high-speed dispersion and vacuum degassing. The dispersed slurry is transported to the slurry storage mechanism 3. The slurry in the slurry storage mechanism 3 is kept vacuum-sealed and stirred at a constant temperature. Finally, the automatic guided vehicle 4 unloads the slurry storage mechanism 3 and transports it to the slurry loading position of the coating device to replace the empty slurry storage mechanism 3. The total amount of slurry stored in the slurry storage mechanism 3 in the intelligent batching device 34 must be controlled to be 1 to 2 times the total amount of slurry stored in the coating device to ensure uninterrupted supply of slurry during production.

[0058] It should be noted that the two sets of intelligent batching devices 34 can be placed on the ground like the rack, but can also be stacked to reduce the floor space. When stacked, if no partition is set between the upper production line 31 and the lower production line 32, the two sets of intelligent batching devices 34 can be stacked by separately setting a partition. If a partition, i.e., a separation layer 33, is set between the upper production line 31 and the lower production line 32, the separation layer 33 can be located between the intelligent batching device 34 for preparing the positive electrode slurry and the intelligent batching device 34 for preparing the negative electrode slurry.

[0059] The optional technical solution of this embodiment also includes at least one first automatic unwinding and splicing device 39 and at least one second automatic unwinding and splicing device 40. The first automatic unwinding and splicing device 39 is located upstream of the positive electrode sheet production line and is used for unwinding and splicing the positive electrode foil. The second automatic unwinding and splicing device 40 is located upstream of the negative electrode sheet production line and is used for unwinding and splicing the negative electrode foil.

[0060] In this embodiment, the automatic unwinding and splicing device is located at the front end of the double-layer structure production line, and the same highly integrated electrode production system includes at least two sets of automatic unwinding and splicing devices, namely the first automatic unwinding and splicing device 39 and the second automatic unwinding and splicing device 40, which are respectively used for unwinding and splicing the positive electrode foil or the negative electrode foil, and the automatic unwinding and splicing device is located at the front end of the double-layer structure production line, i.e., upstream. Since there is no need to connect other structures before the automatic unwinding and splicing device, in this embodiment, the first automatic unwinding and splicing device 39 and the second automatic unwinding and splicing device 40 can be placed front and back on the same layer or vertically overlapped and placed on the upper and lower layers respectively. The foil pulled out from the first automatic unwinding and splicing device 39 is connected to the upper production line 31, and the foil pulled out from the second automatic unwinding and splicing device 40 is connected to the lower production line 32. It should be noted that the first automatic unwinding and splicing device 39 and the second automatic unwinding and splicing device 40 can be placed on the ground like the frame, but can also be arranged in a stacked manner to reduce the footprint; wherein, when arranged in a stacked manner, if no partition is set between the upper production line 31 and the lower production line 32, the first automatic unwinding and splicing device 39 and the second automatic unwinding and splicing device 40 can be set in a separate partition to achieve a stacked arrangement; if a partition, i.e., a partition layer 33, is set between the upper production line 31 and the lower production line 32, the first automatic unwinding and splicing device 39 and the second automatic unwinding and splicing device 40 can be both located on the same side of the partition layer 33 or respectively located on the upper and lower sides of the partition layer 33.

[0061] Specifically, along the production direction of the positive electrode sheet production line, the positive electrode sheet production line includes at least one first double-sided coating device 41, at least one first suspension baking device 42, at least one first rolling device 43 and at least one first film-making device 44 which are arranged in sequence, and the first double-sided coating device 41 is used to coat the positive electrode slurry on the dressing area on the upper and lower surfaces of the positive electrode foil, the first suspension baking device 42 is used to dry the positive electrode slurry on the upper and lower surfaces of the positive electrode foil, the first rolling device 43 is used to roll the dressing area on the upper and lower surfaces of the positive electrode foil, and the first film-making device 44 is used to make the positive electrode sheet; and / or, along the negative electrode sheet With regard to the production direction of the production line, the negative electrode sheet production line includes at least one second double-sided coating device 45, at least one second suspended baking device 46, at least one second rolling device 47, at least one third rolling device and at least one second film-making device 48 which are arranged in sequence, and the second double-sided coating device 45 is used to coat the negative electrode slurry on the dressing areas on the upper and lower surfaces of the negative electrode foil, the second suspended baking device 46 is used to dry the negative electrode slurry on the upper and lower surfaces of the negative electrode foil, the second rolling device 47 and the third rolling device are both used to roll the dressing areas on the upper and lower surfaces of the negative electrode foil, and the second film-making device 48 is used to make the negative electrode sheet.

[0062] In this embodiment, the projection surfaces of the electrodes in the highly integrated electrode production system on the horizontal plane are all rectangles consistent with the tape running direction; the projection of the active material dressing area of ​​the positive electrode electrode on the plane of the negative electrode electrode along the vertical direction is located within the active material dressing area of ​​the negative electrode electrode.

[0063] In the optional technical scheme of the present embodiment, the first automatic unwinding and splicing device 39 and the second automatic unwinding and splicing device 40 both include an unwinding mechanism 5, a positioning mechanism, a cutting mechanism 7, a first gluing mechanism, a first buffer mechanism 10, a feeding mechanism 6, a connecting mechanism and a first deviation correction mechanism 11; the unwinding mechanism 5 is used to unwind a new roll of foil, the positioning mechanism is used to fix the end of an old roll of foil, the cutting mechanism 7 is used to cut the end of the old roll of foil, the first gluing mechanism is used to apply double-sided tape to the end of the old roll of foil, the first buffer mechanism 10 is used to store the foil in motion, the feeding mechanism 6 is used to unload the old roll after the end of the old roll of foil is cut off, the connecting mechanism is used to connect the starting end of the new roll of foil with the end of the old roll of foil through double-sided tape, and the first deviation correction mechanism 11 is used to correct the foil.

[0064] In this embodiment, a new roll of foil is fed to the unwinding mechanism 5 to wait for roll replacement. When the old roll of foil is about to run out, the positioning mechanism, the cutting mechanism 7 and the first gluing mechanism respectively fix, cut and stick double-sided tape to the end of the old roll of foil. Multiple tension rollers in the first buffer mechanism 10 are displaced to store the foil in motion. At the same time, the unloading mechanism 6 unloads the cut old roll. The connecting mechanism pulls and positions the starting end of the new roll of foil to the end of the old roll of foil, presses it down to bond it to the other side of the double-sided tape, and completes the connection between the starting end of the new roll of foil and the end of the old roll of foil. In this process, other devices in the highly integrated electrode production system can run without stopping or slowing down. Among them, the connecting mechanism and the first gluing mechanism together form a connecting gluing mechanism 8.

[0065] Specifically, the positioning mechanism drives the pressure rod by the cylinder or the motor to press the foil material to achieve fixation, the cutting mechanism 7 drives the cutting knife by the cylinder or the motor to cut the foil material, the first gluing mechanism is a gluing machine, and the connecting mechanism is a connecting machine. It should be noted that the unwinding mechanism 5 and the unloading mechanism 6 are both unwinding machines, and the two can be used interchangeably. In this embodiment, the unwinding machine equipped with a new roll of foil material is the unwinding mechanism 5. The unwinding machine equipped with an old roll of foil material is the unloading mechanism 6.

[0066] In the optional technical solution of this embodiment, the positive electrode sheet production line includes a first double-sided coating device 41, and the first double-sided coating device 41 includes a first traction mechanism 9, a first coating die 12 and a second coating die 13, the first traction mechanism 9 is used to pull the positive electrode foil, and the first coating die 12 and the second coating die 13 are respectively located on the upper and lower sides of the positive electrode foil; the negative electrode sheet production line includes a second double-sided coating device 45, and the second double-sided coating device 45 includes a second traction mechanism, a third coating die and a fourth coating die, the second traction mechanism is used to pull the negative electrode foil, and the third coating die and the fourth coating die are respectively located on the upper and lower sides of the negative electrode foil.

[0067] In this embodiment, the double-sided coating device 35 is located after the automatic unwinding and splicing device. The same highly integrated electrode production system includes at least two sets of double-sided coating devices 35 and two sets of traction mechanisms, namely the first double-sided coating device 41 and the second double-sided coating device 45 and the first traction mechanism 9 and the second traction mechanism. The first double-sided coating device is located on the upper production line 31, and the second double-sided coating device 45 is located on the lower production line 32. The first double-sided coating device 41 includes a first coating die 12 and a second coating die 13, and the second double-sided coating device 45 includes a third coating die and a fourth coating die. The first coating die 12 and the second coating die 13 are respectively located on the upper surface side and the lower surface side of the upper foil, and the third coating die and the fourth coating die are respectively located on the upper surface side and the lower surface side of the lower foil.

[0068] Specifically, the first traction mechanism 9 and the second traction mechanism are both composed of two traction rollers, and the foil is pulled by the cooperation of the two traction rollers, which has a simple structure and a good and stable traction effect.

[0069] In the optional technical solution of this embodiment, the back side of the corresponding foil of the first coating die head 12 and the third coating die head may or may not be provided with a back roller 14. A first film detection mechanism 15 is provided between the first coating die head 12 and the second coating die head 13 to detect the weight W1 of the coating material on the upper surface of the upper foil material, and a second film detection mechanism 16 is provided between the second coating die head 13 and the suspension baking device 17 to detect the weight W2 of the total coating material on the upper foil material; a third film detection mechanism is provided between the third coating die head and the fourth coating die head to detect the weight W3 of the coating material on the upper surface of the lower foil material, and a fourth film detection mechanism is provided between the fourth coating die head and the suspension baking device 17 to detect the weight W4 of the total coating material on the lower foil material. The measurement data is uploaded in real time and monitored online. When 0.493W2≤W1≤0.508W2, 0.493W4≤W3≤0.508W4 is met, the system operates normally. When it exceeds the range, the coating die pump speed is automatically adjusted to control the slurry extrusion amount.

[0070] In the optional technical solution of this embodiment, the first coating die 12, the second coating die 13, the third coating die and the fourth coating die can be equipped with a constant temperature mechanism to keep the temperature of the extruded slurry constant.

[0071] In the optional technical solution of this embodiment, the positive electrode sheet production line includes a first suspended baking device 42, and the negative electrode sheet production line includes a second suspended baking device 46, and the first suspended baking device 42 and the second suspended baking device 46 both include a multi-section oven; the oven is provided with an upper air outlet, an upper air exhaust outlet, a lower air outlet and a lower air exhaust outlet.

[0072] In this embodiment, the suspension baking device 17 is located after the double-sided coating device 35, and the same highly integrated electrode production system includes at least two sets of suspension baking devices 17, namely the first suspension baking device 42 and the second suspension baking device 46. The first suspension baking device 42 is located on the upper production line 31, and the second suspension baking device 46 is located on the lower production line 32. The first suspension baking device 42 and the second suspension baking device 46 both include at least three ovens, and the oven is provided with an upper air outlet, an upper exhaust port, a lower air outlet and a lower exhaust port. By applying hot air to the upper and lower surfaces of the electrode at the same time, both sides of the electrode are dried at the same time, and the lower air outlet also plays the role of suspending the electrode, so that the electrode dressing does not come into any contact with the oven. It should be noted that if there is no partition between the upper production line 31 and the lower production line 32, the first suspension baking device 42 and the second suspension baking device 46 can be provided with a separate interlayer to achieve a stacked setting.

[0073] In the optional technical solution of this embodiment, the oven is also provided with a first flattening mechanism, which includes multiple groups of rollers, which roll the non-dressing area of ​​the pole piece so that the pole piece is completely parallel to the oven, thereby avoiding bending of the pole piece due to its own weight or wind field.

[0074] In the optional technical solution of this embodiment, the oven is also provided with an infrared heating mechanism, which can be activated or not according to the type and state of the electrode dressing to accelerate drying. After coating, the electrode is completely dried after passing through the suspension baking device 17, and the electrode is directly pulled to the next process without winding.

[0075] In the optional technical solution of this embodiment, the positive electrode sheet production line includes a first rolling device 43, and the negative electrode sheet production line includes a second rolling device 47 and a third rolling device, and the first rolling device 43, the second rolling device 47 and the third rolling device all include a third traction mechanism 51, a rolling mechanism 18, a second flattening mechanism 20, a second buffer mechanism 53, a second deviation correction mechanism 54 and a first detection mechanism 19; the third traction mechanism 51 is used to pull the electrode sheet through the second buffer mechanism 53, the second deviation correction mechanism 54, the rolling mechanism 18 and the first detection mechanism 19 in sequence, and the second buffer mechanism 53 is used to cache the electrode sheet, the second deviation correction mechanism 54 is used to correct the deviation of the electrode sheet, the rolling mechanism 18 is used to roll the dressing area on the upper and lower surfaces of the foil, the second flattening mechanism 20 is used to flatten the electrode sheet, and the first detection mechanism 19 is used to detect the thickness of the electrode sheet after the rolling mechanism 18. Specifically, the first detection mechanism is an ultrasonic thickness sensor or an ultrasonic surface density meter.

[0076] In this embodiment, the rolling device 36 is located after the suspended baking device 17, and the same highly integrated electrode production system includes at least three sets of rolling devices 36, namely the first rolling device 43, the second rolling device 47, and the third rolling device. The first rolling device 43 is located on the upper production line 31, the second rolling device 47 and the third rolling device are located on the lower production line 32, and the second rolling device 47 is located before the third rolling device.

[0077] In this embodiment, the first roller pressing device 43 may be located directly above the second roller pressing device 47, or the first roller pressing device 43 may be located directly above the third roller pressing device. It should be noted that if no partition is provided between the upper production line 31 and the lower production line 32, the stacked roller pressing devices 36 may be provided with a separate partition to achieve a stacked arrangement.

[0078] Specifically, the pole piece is subjected to the tension of the third traction mechanism 51, and after passing through the second buffer mechanism 53 and the second deviation correction mechanism 54, enters the rolling mechanism 18 for rolling, and the pole piece is pressed to the required thickness. The first detection mechanism 19 detects the thickness of the pole piece after rolling and uploads it in real time. The system adjusts the pressure of the rolling mechanism 18 online according to the thickness data. Among them, the winding mechanism may not be set after the rolling device 36, and the pole piece after passing through the second flattening device is directly pulled to the next process.

[0079] In this embodiment, the first flattening mechanism and the second flattening mechanism 20 are both composed of flattening rollers.

[0080] In the optional technical solution of this embodiment, the coating device can coat the A side and the B side respectively, and the electrode piece needs to pass through the suspension baking device 17 twice in succession, and then be connected to the roller pressing device 36. The connection method is explained by taking the upper production line 31 as an example, wherein two first suspension baking devices 42 are provided so that the electrode piece can pass through twice in succession, and the two first suspension baking devices 42 can be arranged front and back along the production direction of the upper production line 31, or can be stacked up and down in a direction perpendicular to the production direction of the upper production line 31.

[0081] In the optional technical solution of this embodiment, the positive electrode sheet production line includes a first sheet-making device 44, the negative electrode sheet production line includes a second sheet-making device 48, and the first sheet-making device 44 and the second sheet-making device 48 both include a fourth traction mechanism 52, a third cache mechanism 55, a third deviation correction mechanism 56, a second detection mechanism and a cutting mechanism; the fourth traction mechanism 52 is used to pull the electrode sheet through the third cache mechanism 55, the third deviation correction mechanism 56, the cutting mechanism and the second detection mechanism in sequence, and the third cache mechanism 55 is used to cache the electrode sheet, the third deviation correction mechanism 56 is used to correct the electrode sheet, the cutting mechanism is used to cut the electrode sheet, and the second detection mechanism is used to detect the appearance of the electrode sheet.

[0082] In this embodiment, the film-making device 37 is located after the rolling device 36. The same highly integrated electrode production system includes at least two sets of film-making devices 37, namely a first film-making device 44 and a second film-making device 48. The first film-making device 44 is located on the upper production line 31, and the second film-making device 48 is located on the lower production line 32.

[0083] Specifically, under the action of the tension of the fourth traction mechanism 52, the rolled pole piece passes through the third buffer mechanism 55 and the third deviation correction mechanism 56 and enters the cutting mechanism. Among them, for batteries with different structures, the cutting mechanism can be a die-cutting mechanism 21 used alone, and the die-cutting mechanism 21 uses a laser or a hardware tool to cut out the pole ear at the edge of the pole piece; it can also be a slitting mechanism 22 used alone, and the slitting mechanism 22 cuts out the edge surplus or cuts out multiple pole pieces; it can also be a die-cutting mechanism 21 and a slitting mechanism 22 used simultaneously. The second detection mechanism detects the size, burr, and pole ear position of the pole piece after die-cutting and / or slitting and uploads the data in real time. The system adjusts the relative position of the die-cutting mechanism 21 or the slitting mechanism 22 online according to the data to control the cutting quality. When the die-cutting mechanism 21 and the slitting mechanism 22 are used at the same time, two second detection mechanisms are provided, one is the die-cutting detection mechanism 24, and the other is the slitting detection mechanism 23.

[0084] In this embodiment, if the pole pieces to be produced are multiple pole pieces, at least two winding mechanisms can be connected to the pole piece production device 37; if the pole pieces to be produced are single pole pieces, one winding mechanism can be connected to the pole piece production device 37, or the pole piece can be directly connected to the winding device 38 without being wound up after production.

[0085] The optional technical solution of this embodiment further includes a winding device 38, which is arranged downstream of the positive electrode sheet production line and the negative electrode sheet production line and is used to make the positive electrode sheet and the negative electrode sheet into a winding core.

[0086] In this embodiment, the winding device 38 is located after the film making device 37, and the winding device 38 includes a fifth traction mechanism 57, a fourth buffer mechanism 58, a fourth deviation correction mechanism 59, a winding needle 29 mechanism, a diaphragm unwinding mechanism 25, a cutting mechanism, a second gluing mechanism and a third detection mechanism. If the incoming electrode is a single width, the electrode can be directly connected to the winding device 38 after film making. Under the action of the tension of the fifth traction mechanism 57, the upper electrode 27 and the lower electrode 28 pass through the fourth buffer mechanism 58 and the fourth deviation correction mechanism 59 respectively, and arrive at the same winding needle 29 mechanism. The upper electrode 27, the lower electrode 28 and the diaphragm 26 are wound, cut and glued to produce the electrode core 30. The third detection mechanism can detect the neatness of the winding core, the gluing position, the electrode position and the state of the diaphragm 26, and upload the data in real time. The system makes online adjustments based on the data.

[0087] Specifically, the first traction mechanism 9, the second traction mechanism, the third traction mechanism 51, the fourth traction mechanism 52 and the fifth traction mechanism 57 are all composed of two traction rollers; the cutting mechanism drives the cutting knife to cut by a cylinder or a motor; the second gluing mechanism is a gluing machine; the first correcting mechanism 11, the second correcting mechanism 54, the third correcting mechanism 56 and the fourth correcting mechanism 59 are all composed of one or more correcting rollers.

[0088] In this embodiment, if the incoming electrode piece is multiple pieces and has been wound up by the winding device 49, at least two sets of unwinding devices 50 must be installed on the winding device 38. After the upper electrode piece 27 and the lower electrode piece 28 are unwound and connected, the other production steps are the same as the above-mentioned single-piece electrode piece.

[0089] In this embodiment, the upper production line 31 and the lower production line 32 both include: an automatic unwinding and splicing device, a double-sided coating device 35, a suspension baking device 17, a rolling device 36 and a film-making device 37, and a winding device 38 is arranged at the rear end of the upper production line 31 and the lower production line 32; the positive and negative electrode foils enter the production lines of different layers respectively, and pass through the automatic unwinding and splicing device, the double-sided coating device 35, the suspension baking device 17, the rolling device 36 and the film-making device 37 in the horizontal direction of the highly integrated electrode production system in turn, and finally the positive electrode sheets and the negative electrode sheets respectively made by the upper production line 31 and the lower production line 32 enter the winding device 38 together, and the central axes of the traction rollers, the over rollers and the tension rollers in all the devices are kept horizontally consistent, and the projection surfaces of the electrodes in the highly integrated electrode production system on the horizontal plane are all rectangles consistent with the tape running direction; the projection of the active material dressing area of ​​the positive electrode sheet on the plane of the negative electrode sheet in the vertical direction is located in the active material dressing area of ​​the negative electrode sheet.

[0090] In the preferred embodiment of the present invention, a single pole piece is the best choice, which realizes the integrated interconnection of batching-coating-baking-rolling-film making-winding, so that the integration of the highly integrated pole piece production system is maximized.

[0091] Preferably, the highly integrated electrode production system of this embodiment monitors the tension of coating, rolling, film making and winding online, calculates the buffer amount of the electrode in each device according to the change of tension, and thus controls the action of the buffer mechanism to avoid excessive or insufficient tension affecting the quality of the electrode and the continuity of production.

[0092] In this embodiment, the upper production line 31 is a positive electrode sheet production line, and the lower production line 32 is a negative electrode sheet production line. The active material in the positive electrode sheet includes any one or more of lithium iron phosphate, lithium cobalt oxide, lithium manganate, ternary lithium, sodium ion layered oxide, sodium ion polyanion compound and sodium ion Prussian blue compound; the active material of the negative electrode sheet includes any one or more of graphite, soft carbon, hard carbon, silicon oxide, silicon carbide and lithium titanate.

[0093] The pole pieces and winding cores produced by the highly integrated pole piece production system provided in this embodiment can be used in lithium-ion batteries and sodium-ion batteries.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A highly integrated pole piece production system, characterized in that: include: A frame, a positive electrode sheet production line and a negative electrode sheet production line arranged on the frame; The positive electrode sheet production line and the negative electrode sheet production line are stacked; The positive electrode sheet production line is used to make positive electrode sheets from positive electrode foils, and the negative electrode sheet production line is used to make negative electrode sheets from negative electrode foils, and the positive electrode sheet production line and the negative electrode sheet production line can produce synchronously.

2. The highly integrated electrode production system according to claim 1, characterized in that: Also included is an intelligent batching device (34); The intelligent batching device (34) is arranged upstream of the positive electrode sheet production line, and the intelligent batching device (34) is used to prepare positive electrode slurry and can transport the positive electrode slurry to the positive electrode sheet production line, and the positive electrode sheet production line can apply the positive electrode slurry to the dressing areas on the upper and lower surfaces of the positive electrode foil; The intelligent batching device (34) is arranged upstream of the negative electrode sheet production line. The intelligent batching device (34) is used to prepare negative electrode slurry and can transport the negative electrode slurry to the negative electrode sheet production line. The negative electrode sheet production line can apply the negative electrode slurry to the dressing areas on the upper and lower surfaces of the negative electrode foil.

3. The highly integrated electrode production system according to claim 2, characterized in that: The intelligent batching device (34) comprises a raw material disassembly and assembly mechanism, a premixing mechanism (1), a dispersing mechanism (2), a slurry storage mechanism (3) and an automatic guided vehicle (4), wherein the raw material disassembly and assembly mechanism is used to unpack the raw materials and transport them to the premixing mechanism (1), the premixing mechanism (1) is used to stir the raw materials and transport them to the dispersing mechanism (2), the dispersing mechanism (2) is used to disperse the raw materials to obtain slurry and transport it to the slurry storage mechanism (3), the slurry storage mechanism (3) is used to vacuum store and stir the slurry at a constant temperature, and the automatic guided vehicle (4) is used to transport the raw materials from the warehouse to the raw material disassembly and assembly mechanism and to transport the slurry storage mechanism (3) to the corresponding slurry loading position of the positive electrode sheet production line or the negative electrode sheet production line.

4. The highly integrated electrode production system according to claim 1, characterized in that: It also includes at least one first automatic unwinding and tape-splicing device (39) and at least one second automatic unwinding and tape-splicing device (40), wherein the first automatic unwinding and tape-splicing device (39) is located upstream of the positive electrode sheet production line and is used to unwind and tape the positive electrode foil material, and the second automatic unwinding and tape-splicing device (40) is located upstream of the negative electrode sheet production line and is used to unwind and tape the negative electrode foil material; Along the production direction of the positive electrode sheet production line, the positive electrode sheet production line comprises at least one first double-sided coating device (41), at least one first suspension baking device (42), at least one first rolling device (43) and at least one first film-making device (44) which are arranged in sequence, and the first double-sided coating device (41) is used to coat the positive electrode slurry on the dressing areas of the upper and lower surfaces of the positive electrode foil, the first suspension baking device (42) is used to dry the positive electrode slurry on the upper and lower surfaces of the positive electrode foil, the first rolling device (43) is used to roll the dressing areas of the upper and lower surfaces of the positive electrode foil, and the first film-making device (44) is used to make the positive electrode sheet; And / or, along the production direction of the negative electrode sheet production line, the negative electrode sheet production line includes at least one second double-sided coating device (45), at least one second suspension baking device (46), at least one second rolling device (47), at least one third rolling device and at least one second film-making device (48) which are arranged in sequence, and the second double-sided coating device (45) is used to coat the negative electrode slurry on the dressing areas on the upper and lower surfaces of the negative electrode foil, the second suspension baking device (46) is used to dry the negative electrode slurry on the upper and lower surfaces of the negative electrode foil, the second rolling device (47) and the third rolling device are both used to roll the dressing areas on the upper and lower surfaces of the negative electrode foil, and the second film-making device (48) is used to make the negative electrode sheet.

5. The highly integrated electrode production system according to claim 4, characterized in that: The first automatic unwinding and tape splicing device (39) and the second automatic unwinding and tape splicing device (40) both comprise an unwinding mechanism (5), a positioning mechanism, a cutting mechanism (7), a first gluing mechanism, a first buffer mechanism (10), a material unloading mechanism (6), a splicing mechanism and a first deviation correcting mechanism (11); The unwinding mechanism (5) is used to unwind a new roll of foil, the positioning mechanism is used to fix the end of an old roll of foil, the cutting mechanism (7) is used to cut the end of the old roll of foil, the first gluing mechanism is used to stick double-sided tape on the end of the old roll of foil, the first buffer mechanism (10) is used to store the foil in motion, the unloading mechanism (6) is used to unload the old roll after the end of the old roll of foil is cut off, the connecting mechanism is used to connect the starting end of a new roll of foil with the end of the old roll of foil through the double-sided tape, and the first deviation correction mechanism (11) is used to correct the deviation of the foil.

6. The highly integrated electrode production system according to claim 4, characterized in that: The positive electrode sheet production line comprises the first double-sided coating device (41), and the first double-sided coating device (41) comprises a first traction mechanism (9), a first coating die head (12) and a second coating die head (13), the first traction mechanism (9) is used to traction the positive electrode foil, and the first coating die head (12) and the second coating die head (13) are respectively located on the upper and lower sides of the positive electrode foil; The negative electrode sheet production line comprises the second double-sided coating device (45), and the second double-sided coating device (45) comprises a second traction mechanism, a third coating die head and a fourth coating die head, the second traction mechanism is used to traction the negative electrode foil, and the third coating die head and the fourth coating die head are respectively located on the upper and lower sides of the negative electrode foil.

7. The highly integrated electrode production system according to claim 4, characterized in that: The positive electrode sheet production line comprises the first suspension baking device (42), the negative electrode sheet production line comprises the second suspension baking device (46), and both the first suspension baking device (42) and the second suspension baking device (46) comprise a multi-section oven; The oven is provided with an upper air outlet, an upper air exhaust outlet, a lower air outlet and a lower air exhaust outlet.

8. The highly integrated electrode production system according to claim 4, characterized in that: The positive electrode sheet production line comprises the first rolling device (43), the negative electrode sheet production line comprises the second rolling device (47) and the third rolling device, and the first rolling device (43), the second rolling device (47) and the third rolling device all comprise a third traction mechanism (51), a rolling mechanism (18), a second flattening mechanism (20), a second buffer mechanism (53), a second deviation correction mechanism (54) and a first detection mechanism (19); The third traction mechanism (51) is used to pull the pole piece through the second buffer mechanism (53), the second deviation correction mechanism (54), the rolling mechanism (18) and the first detection mechanism (19) in sequence, and the second buffer mechanism (53) is used to buffer the pole piece, the second deviation correction mechanism (54) is used to correct the deviation of the pole piece, the rolling mechanism (18) is used to roll the dressing area on the upper and lower surfaces of the foil, the second flattening mechanism (20) is used to flatten the pole piece, and the first detection mechanism (19) is used to detect the thickness of the pole piece after the rolling mechanism (18).

9. The highly integrated electrode production system according to claim 4, characterized in that: The positive electrode sheet production line comprises the first sheet making device (44), the negative electrode sheet production line comprises the second sheet making device (48), and the first sheet making device (44) and the second sheet making device (48) both comprise a fourth traction mechanism (52), a third buffer mechanism (55), a third deviation correction mechanism (56), a second detection mechanism and a cutting mechanism; The fourth traction mechanism (52) is used to pull the pole piece through the third buffer mechanism (55), the third deviation correction mechanism (56), the cutting mechanism and the second detection mechanism in sequence, and the third buffer mechanism (55) is used to buffer the pole piece, the third deviation correction mechanism (56) is used to correct the deviation of the pole piece, the cutting mechanism is used to cut the pole piece, and the second detection mechanism is used to detect the appearance of the pole piece.

10. The highly integrated electrode production system according to any one of claims 1 to 9, characterized in that: It also includes a winding device (38), which is arranged downstream of the positive electrode sheet production line and the negative electrode sheet production line and is used to make the positive electrode sheet and the negative electrode sheet into a winding core.

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