Intelligent battery production line

Abstract

The utility model relates to the technical field of battery manufacturing equipment, in particular to an intelligent battery production line. The utility model provides an intelligent battery production line. The intelligent battery production line comprises a high-integration pole piece production system and a liquid injection forming system, the high-integration pole piece production system comprises a rack, a winding and laminating device and a double-layer production line arranged on the rack, one layer of the double-layer production line is a positive pole piece production line and used for manufacturing positive pole pieces from positive pole foils, and the other layer of the double-layer production line is a negative pole piece production line and used for manufacturing negative pole pieces from negative pole foils. A traditional sectional production mode is broken through, production efficiency and product consistency are improved, the length of a production line is reduced, plant land is greatly reduced, energy consumption is reduced, production cost is reduced, frequent winding and unwinding are omitted, and production is more concise and intelligent; the space utilization rate is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing equipment, in particular to an intelligent battery production line. 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. Utility Model Content

[0004] The purpose of the utility model is to provide an intelligent battery production line to solve the technical problems of the traditional production mode of divided line bodies 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.

[0005] The utility model provides an intelligent battery production line, comprising: a highly integrated pole piece production system and a liquid injection formation system;

[0006] The highly integrated electrode sheet production system comprises a frame, a winding and laminating device, and a double-layer production line arranged on the frame, wherein one layer of the double-layer production line is a positive electrode sheet production line and is used to make positive electrode sheets from positive electrode foils, and the other layer is a negative electrode sheet production line and 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, and the winding and laminating device is used to make the positive electrode sheets and the negative electrode sheets into electrode cores, and the electrode cores are used to make battery cells;

[0007] The liquid injection and formation system is used to inject electrolyte into the battery core and perform formation.

[0008] As a further technical solution, the highly integrated electrode production system further includes an intelligent batching device;

[0009] 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;

[0010] 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.

[0011] As a further technical solution, 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 area 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 area 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;

[0012] 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.

[0013] As a further technical solution, it also includes an integrated assembly system for making the pole core into the battery core, and the integrated assembly system includes a transmission device, a hot pressing device, a first welding device, a matching shell device, a second welding device and a helium detection device;

[0014] The transmission device is used to sequentially transport the pole core to the hot pressing device, the first welding device, the paired shell device, the second welding device and the helium inspection device, and can remove defective samples produced by any one of the hot pressing device, the first welding device, the paired shell device, the second welding device and the helium inspection device;

[0015] The hot pressing device is used to perform hot pressing bonding on the pole core;

[0016] The first welding device is used to connect the multiple layers of pole tabs of the pole core after thermal compression bonding into a pole tab group;

[0017] The paired shell-introducing device is used to install the pole core after connecting multiple layers of pole tabs into a pole tab group into the shell;

[0018] The second welding device is used to connect the tab group of the pole core installed in the shell with the cover plate, and connect the cover plate with the shell to form a battery core;

[0019] The helium detection device is used to perform leak detection on the battery cell.

[0020] As a further technical solution, it also includes an integrated assembly system for making the pole core into the battery core, and the integrated assembly system includes a transmission device, a hot pressing device, a first welding device, a shell punching device and a heat sealing device;

[0021] The transmission device is used to sequentially transport the pole core to the hot pressing device, the first welding device, the shell punching device and the heat sealing device, and can remove defective samples produced by any one of the hot pressing device, the first welding device, the shell punching device and the heat sealing device;

[0022] The hot pressing device is used to perform hot pressing bonding on the pole core;

[0023] The first welding device is used to connect the multiple layers of pole tabs of the pole core after thermal compression bonding into a pole tab group;

[0024] The shell punching device is used to punch the aluminum-plastic film material into a battery shell of a predetermined shape and size;

[0025] The heat sealing device melts the heat sealing layer of the aluminum-plastic film material by heating, and packages the aluminum-plastic film into a battery shell, so as to seal the battery core into a battery core.

[0026] As a further technical solution, the liquid injection and formation system comprises an aging device, a liquid injection device and a formation device;

[0027] The aging device is used to age the battery core, the injection device is used to inject electrolyte into the battery core, and the formation device is used to form the battery core.

[0028] As a further technical solution, it also includes a finished product shipping system, which is used to perform finished product inspection on the formed battery cells, and encode and package the battery cells that meet the finished product requirements before shipping, and the finished product shipping system includes an electrical performance measuring device, a specification measuring device, an appearance inspection device, a coding device, and a packaging device;

[0029] The electrical performance measuring device is used to detect the capacity, AC resistance, DC resistance, shipping voltage and self-discharge of the battery cell;

[0030] The specification measuring device is used to detect the weight, length, width and height of the battery cell;

[0031] The appearance inspection device is used to inspect the appearance of the battery cell;

[0032] The encoding device is used to assign a unique code to each of the battery cells that meet the shipment requirements, and the code includes the shipment information of the battery cell;

[0033] The packaging device is used to package the coded battery cells for shipment.

[0034] As a further technical solution, it also includes a real-time monitoring system, which is used to monitor the working information of the high-integration electrode production system, the working information of the integrated assembly system, the working information of the liquid injection formation system and the working information of the finished product shipping system in real time. The real-time monitoring system includes a cloud server, a terminal visualization platform, a slurry monitoring module, a electrode monitoring module, a tension monitoring module, an appearance monitoring module, a specification monitoring module, an electrical performance monitoring module and an operation monitoring module;

[0035] The slurry monitoring module, the electrode monitoring module, the tension monitoring module, the appearance monitoring module, the specification monitoring module, the electrical performance monitoring module and the operation monitoring module are all connected to the cloud server in communication, and are all capable of uploading monitoring data to the cloud server in real time;

[0036] The terminal visualization platform is used to retrieve the monitoring data received by the cloud server;

[0037] The slurry monitoring module is used to monitor the slurry information during the production of positive electrode sheets and negative electrode sheets by the highly integrated electrode sheet production system;

[0038] The electrode monitoring module is used to monitor the information of the electrode surface film during the production of positive electrode sheets and negative electrode sheets by the highly integrated electrode production system;

[0039] The tension monitoring module is used to monitor information on the tension of the electrode sheets during the production of positive electrode sheets and negative electrode sheets by the highly integrated electrode sheet production system;

[0040] The appearance monitoring module is used to monitor the appearance information of the electrode sheets during the production of positive electrode sheets and negative electrode sheets by the highly integrated electrode sheet production system, and the appearance information of the electrode core and the battery cell during the production of the electrode core by the integrated assembly system;

[0041] The specification monitoring module is used to monitor the specification information of the battery cell;

[0042] The electrical performance monitoring module is used to monitor the electrical performance information of the battery cell;

[0043] The operation monitoring module includes monitoring cameras, which are arranged at the highly integrated electrode production system, the integrated assembly system, the liquid injection formation system and the finished product shipping system.

[0044] As a further technical solution, it also includes a manufacturing execution system for remotely controlling the automated production of the intelligent battery production line, the manufacturing execution system including a material management module, a data management module, an equipment management module, a production management module, a product management module, an enterprise standard management module and a remote management module;

[0045] The material management module is used to manage the materials required for production;

[0046] The data management module is used to process and analyze the information obtained by the real-time monitoring system, and determine whether the sample can be produced normally according to the analysis results. If an abnormality occurs, an abnormality alarm is issued and an instruction for solving the abnormality is output. If normal, all information is associated with the same code;

[0047] The equipment management module is used to read the information obtained by the real-time monitoring system and determine whether it is in a normal production state, and output instructions based on the judgment;

[0048] The production management module is used to organize and manage production information online;

[0049] The product management module is used to manage the inventory status of products, the shipment quantity of products, the collection of client usage of products, and the market abnormality tracing of products;

[0050] The enterprise standard management module is used to manage quality standards, product standards, process standards, equipment operation standards and customer testing standards;

[0051] The remote management module performs background supervision through the images uploaded by the monitoring camera.

[0052] As a further technical solution, it also includes a digital twin system, which is used to virtually simulate the highly integrated pole piece production system, the integrated assembly system, the liquid injection formation system and the battery cell, and is coupled with the actual operating status of the highly integrated pole piece production system, the integrated assembly system and the liquid injection formation system to feedback the simulated dynamics of the highly integrated pole piece production system, the integrated assembly system and the liquid injection formation system in a visualization window.

[0053] As a further technical solution, the digital twin system is also used to perform electrochemical, thermal and dynamic simulations of the battery cell.

[0054] As a further technical solution, it also includes an electrical control system for controlling the operating state of the intelligent battery production line, the electrical control system includes a master control system and control devices of each section, and the control devices of each section include a PLC, a host computer, and a servo motor, a hydraulic mechanism, and a pneumatic mechanism electrically connected to the PLC and the host computer;

[0055] The master control system is communicatively connected with the PLC and the host computer, and is used to edit the language logic of each work section and send it to the PLC or the host computer corresponding to each work section to control the servo motor, the hydraulic mechanism and the pneumatic mechanism.

[0056] Compared with the prior art, the intelligent battery production line provided by the utility model has the following technical advantages:

[0057] The intelligent battery production line provided by the utility model comprises: a highly integrated electrode sheet production system and a liquid injection formation system; the highly integrated electrode sheet production system comprises a frame, a winding and laminating device, and a double-layer production line arranged on the frame, and one layer of the double-layer production line is a positive electrode sheet production line and is used to make positive electrode foil into positive electrode sheets, and the other layer is a negative electrode sheet production line and is used to make negative electrode foil into negative electrode sheets, and the positive electrode sheet production line and the negative electrode sheet production line can produce synchronously, the winding and laminating device is used to make positive electrode sheets and negative electrode sheets into electrode cores, and the electrode cores are used to make battery cells, and the liquid injection formation system is used to inject electrolyte into the battery cells and perform formation.

[0058] 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 model, improving production efficiency and product consistency, reducing the length of the production line, greatly reducing the plant land, saving energy consumption, reducing production costs, and eliminating frequent winding and unwinding, making production simpler and smarter. At the same time, the stacking setting enables the positive electrode sheet production line and the negative electrode sheet production line to be controlled and produced separately to avoid mutual interference. In addition, due to the stacking setting of the positive electrode sheet production line and the negative electrode sheet production line, the manufactured positive electrode sheet and the negative electrode sheet can directly enter the winding and stacking device to form the pole core, which can further improve production efficiency and product consistency. At the same time, the highly integrated electrode sheet production system and the liquid injection formation system are in the same production area, further improving space utilization.

[0059] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] 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.

[0061] Figure 1 A schematic diagram of the structure of a highly integrated electrode production system provided by an embodiment of the utility model;

[0062] Figure 2 A partial enlarged view of the intelligent batching device provided in an embodiment of the utility model;

[0063] 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;

[0064] Figure 4 A partially enlarged schematic diagram of a rolling device and a film-making device provided in an embodiment of the utility model;

[0065] Figure 5 A partially enlarged schematic diagram of a winding lamination device provided in an embodiment of the utility model;

[0066] Figure 6 A layout diagram of a single pole piece connected to a winding lamination device provided in an embodiment of the utility model;

[0067] Figure 7 A layout diagram of a winding lamination device connected to multiple pole pieces provided in an embodiment of the utility model;

[0068] Figure 8 A setting mode of the suspension baking device when the A / B surfaces are coated separately provided in the embodiment of the utility model;

[0069] 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.

[0070] 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; 13-second coating die; 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 and stacking 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

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] The present invention will be further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0076] Specific structure such as Figures 1 to 9 shown.

[0077] The present embodiment provides an intelligent battery production line, including: a highly integrated electrode sheet production system and a liquid injection formation system; the highly integrated electrode sheet production system includes a frame, a winding and laminating device 38, and a double-layer production line arranged on the frame, and one layer of the double-layer production line is a positive electrode sheet production line and is used to make positive electrode foil into positive electrode sheets, and the other layer is a negative electrode sheet production line and is used to make negative electrode foil into negative electrode sheets, and the positive electrode sheet production line and the negative electrode sheet production line can produce synchronously, the winding and laminating device 38 is used to make positive electrode sheets and negative electrode sheets into electrode cores 30, and the electrode cores 30 are used to make battery cells, and the liquid injection formation system is used to inject electrolyte into the battery cells and perform formation.

[0078] 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, and canceling frequent winding and unwinding, making production more concise and intelligent. At the same time, the stacking arrangement enables the positive electrode sheet production line and the negative electrode sheet production line to be controlled and produced separately to avoid mutual interference. In addition, due to the stacking arrangement of the positive electrode sheet production line and the negative electrode sheet production line, the manufactured positive electrode sheet and the negative electrode sheet can directly enter the winding and laminating device 38 to form the pole core 30, which can further improve production efficiency and product consistency. At the same time, the highly integrated pole sheet production system and the liquid injection formation system are in the same production area, further improving space utilization.

[0079] 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.

[0080] 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 33 is located on the frame, the partition layer 33 may 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, and the positive and negative electrode sheets can be arranged on the upper or lower production line 32 for production respectively.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] In this embodiment, the same high-integration 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.

[0087] 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.

[0088] 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.

[0089] In this embodiment, the automatic unwinding and splicing device is located at the front end of the double-layer structure production line. The same high-integration 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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. The 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. During 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.

[0094] 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.

[0095] 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.

[0096] In this embodiment, the double-sided coating device 35 is located after the automatic unwinding and tape 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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 separate interlayers to achieve a stacked setting.

[0102] 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.

[0103] 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.

[0104] 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 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 19 is an ultrasonic thickness sensor or an ultrasonic surface density meter.

[0105] In this embodiment, the rolling device 36 is located after the suspended baking device 17. The same high-integration 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.

[0106] 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.

[0107] 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.

[0108] In this embodiment, the first flattening mechanism and the second flattening mechanism 20 are both composed of flattening rollers.

[0109] 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.

[0110] 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.

[0111] In this embodiment, the film-making device 37 is located after the rolling device 36. The same high-integration 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.

[0112] 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.

[0113] 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 and stacking device 38 without being wound up after production.

[0114] In this embodiment, the winding and laminating device 38 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 sheets and the negative electrode sheets into the electrode core 30.

[0115] In this embodiment, the winding and laminating device 38 is located after the film making device 37, and the winding and laminating 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 and laminating 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 electrode core 30, 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.

[0116] 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.

[0117] In this embodiment, if the incoming electrode sheet 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 and stacking device 38. After the upper electrode sheet 27 and the lower electrode sheet 28 are unwound and connected, the other production steps are the same as the above-mentioned single-piece electrode sheet.

[0118] 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 suspended baking device 17, a rolling device 36 and a film making device 37, and a winding and stacking 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 suspended baking device 17, the rolling device 36 and the film making device 37 in the horizontal direction of the highly integrated electrode sheet 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 and stacking device 38 together, and the central axes of the traction rollers, the passing rollers and the tension rollers in all the devices are kept horizontally consistent, and the projection surfaces of the electrodes on the horizontal plane in the highly integrated electrode sheet production system 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 along the vertical direction is located in the active material dressing area of ​​the negative electrode sheet.

[0119] 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 as to maximize the integration of the high-integration pole piece production system.

[0120] Preferably, in this embodiment, the highly integrated electrode production system monitors the tension of coating, rolling, film making and winding online, and calculates the buffer amount of the electrode in each device according to the change of tension, thereby controlling the action of the buffer mechanism to avoid excessive or insufficient tension affecting the quality of the electrode and the continuity of production.

[0121] 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.

[0122] The pole pieces and pole cores 30 produced by the highly integrated pole piece production system provided in this embodiment can be used in lithium-ion batteries and sodium-ion batteries.

[0123] The highly integrated electrode production system in this embodiment can greatly reduce factory land use, save energy consumption, and reduce production costs; at the same time, it breaks through the traditional segmented production model and improves production efficiency and product consistency.

[0124] The optional technical solution of this embodiment also includes an integrated assembly system for making the pole core 30 into a battery cell. It should be noted that the pole core 30 can also be made into a battery cell by any device in the prior art that can meet the requirements, but the integrated assembly system provided in this embodiment includes a transmission device, a hot pressing device, a first welding device, a matching shell device, a second welding device and a helium inspection device; the transmission device is used to transport the pole core 30 to the hot pressing device, the first welding device, the matching shell device, the second welding device and the helium inspection device in sequence, and can remove the hot pressing device, the first welding device, the matching shell device, the second welding device and the helium inspection device. The hot pressing device is used to perform hot pressing and bonding on the pole core 30; the first welding device is used to connect the multi-layer pole ears of the pole core 30 after hot pressing and bonding into a pole ear group; the matching shell device is used to install the pole core 30 after the multi-layer pole ears are connected into the pole ear group into the shell; the second welding device is used to connect the pole ear group of the pole core 30 installed in the shell with the cover plate, and connect the cover plate with the shell to form a battery cell; the helium detection device is used to detect leaks on the battery cell.

[0125] In this embodiment, the integrated assembly system includes a transmission device, a hot pressing device, a first welding device, a matching shell device, a second welding device and a helium detection device. The transmission device includes a transmission belt, a transmission clamp and a transmission suction cup. The integrated assembly system is directly connected to the high-integration electrode production system through the transmission belt. The pole core 30 produced by the winding / stacking device is transferred to the area where the hot pressing device is located through the transmission belt, and the transmission clamp transfers the pole core 30 to the hot pressing device. The hot pressing device includes a pressurizing mechanism, a heating mechanism and a high-voltage impact mechanism. The pole core 30 is first preheated, and then a certain pressure is vertically applied to the pole core 30, and maintained at a certain temperature for a certain time. After the hot pressing is completed, the high-voltage impact mechanism contacts the positive and negative ears of the pole core 30, detects the current or voltage of the pole core 30, and the bad samples are transferred to the second bad product collection area through the transmission suction cup, and the normal samples are transferred to the conveyor belt through the transmission suction cup and transferred to the first welding device. The first welding device includes a first welding mechanism and a first gluing mechanism. The transmission clamp positions the pole core 30 to the first welding mechanism. The first welding mechanism presses the pole ear and applies ultrasonic or high-temperature heating to connect the multiple layers of pole ears into a pole ear group. Then the first gluing mechanism sticks tape on the front and back sides of the welding position. During this period, defective samples are transferred to the third defective product collection area through the transmission clamp, and normal samples are transferred to the conveyor belt through the transmission clamp and then transferred to the matching shell device. The pairing and shelling device includes a positioning pairing mechanism, a second gluing mechanism and a shelling mechanism. The transmission clamp transfers one or more incoming pole cores 30 to the positioning pairing mechanism so that the spatial position of the pole core 30 meets the shelling requirements. Optionally, when multiple pole cores 30 are connected in parallel or in series, the positioning pairing mechanism adjusts the relative positions between the pole cores 30 to form a pole core 30 group. The second gluing mechanism wraps at least one circle of tape along the outermost circle of the pole core 30 or the pole core 30 group. The transmission clamp clamps the shell from the first material storage area and moves it to the shelling mechanism area. The shelling mechanism pushes the shell and the pole core 30 or the pole core 30 group to relative displacement until the pole core 30 or the pole core 30 group completely enters the shell. During this period, defective samples are transferred to the fourth defective product collection area through the transmission clamp, and normal samples are transferred to the conveyor belt through the transmission clamp and transmitted to the second welding device.The second welding device includes a second welding mechanism, a third welding mechanism, a third gluing mechanism and a bending mechanism. The transmission clamp clamps the material after entering the shell and transfers it to the area of ​​the second welding mechanism. At the same time, the transmission clamp on the other side clamps the cover plate from the second material storage area and transfers it to the area of ​​the second welding mechanism. The second welding mechanism uses a laser to connect one or more groups of pole ears and cover plates. The third gluing mechanism covers the welding points between the pole ears and the cover plates with tape, and then transfers the whole to the area of ​​the bending mechanism. The bending mechanism acts on the pole ears and the cover plates to bend the pole ears, and at the same time, the bending mechanism applies pressure to the cover plates to completely cover the opening position of the shell, and then transfers the whole to the area of ​​the third welding mechanism. The third welding mechanism uses a laser to connect the shell and the cover plate into one. At this point, the assembly is completed and the battery cell is obtained. During this period, the defective samples are transferred to the fifth defective product collection area through the transmission clamp, and the normal samples are transferred to the conveyor belt through the transmission clamp and transferred to the helium inspection device. The helium inspection device includes a vacuum mechanism and a helium mechanism. After the battery cell enters the helium inspection device with the conveyor belt, it is vacuumed and helium is passed through in turn to measure the helium leakage rate. During this period, defective samples are transferred to the sixth defective product collection area through the transmission clamp, and normal samples are transferred to the first clamp through the transmission clamp. The first clamp contains a movable limit plate to adjust the tightness of clamping the battery cell.

[0126] In this embodiment, after the material is automatically loaded, it is continuously produced by hot pressing by a hot pressing device, welding by a first welding device, positioning and shelling by a matching shelling device, welding by a second welding device, and helium inspection by a helium inspection device, and then the battery cell is obtained. During this period, there is no need to experience unloading and turnover. The material is automatically transmitted and processed on the same horizontal plane, and defective products are automatically identified and discharged. This integrated assembly system is suitable for square aluminum shell batteries and square steel shell batteries.

[0127] The optional technical scheme of this embodiment also includes an integrated assembly system for making the pole core 30 into a battery cell, and the integrated assembly system includes a transmission device, a hot pressing device, a first welding device, a shell punching device and a heat sealing device; the transmission device is used to transport the pole core 30 to the hot pressing device, the first welding device, the shell punching device and the heat sealing device in sequence, and can eliminate defective samples produced by any one of the hot pressing device, the first welding device, the shell punching device and the heat sealing device; the hot pressing device is used to perform hot pressing and bonding on the pole core 30; the first welding device is used to connect the multi-layer pole tabs of the pole core 30 after hot pressing and bonding into a pole tab group; the shell punching device is used to punch the aluminum-plastic film material into a battery shell of a predetermined shape and size; the heat sealing device melts the heat sealing layer of the aluminum-plastic film material by heating, and encapsulates the aluminum-plastic film into a battery shell to seal the battery cell to form a battery cell.

[0128] In the optional technical solution of this embodiment, the liquid injection formation system includes an aging device, a liquid injection device and a formation device; the aging device is used to age the battery cell, the liquid injection device is used to inject electrolyte into the battery cell, and the formation device is used to form the battery cell.

[0129] In this embodiment, the liquid injection formation system includes a plurality of aging devices, liquid injection devices and formation devices. Several assembled cells are placed in the first fixture, transferred to the first aging device by a handling robot, and stored for a set time at a certain vacuum degree and temperature. After aging, the handling robot takes out the first fixture from the first aging device and transfers it to the liquid injection device for one injection. The liquid injection device includes a vacuum mechanism, a nitrogen mechanism, an infusion mechanism and a sealing mechanism. The first fixture enters the cavity of the liquid injection device. When the vacuum mechanism is running, the cavity is negatively pressurized. Then the infusion mechanism injects a set amount of the first electrolyte into the shell through the liquid injection hole reserved by the cell cover or the shell; the sealing mechanism plugs the liquid injection hole with a sealing nail to prevent the first electrolyte from leaking; finally, the positive pressure and negative pressure are applied to the cavity of the liquid injection device by the nitrogen mechanism and the vacuum mechanism 2 or more times to accelerate the electrolyte to enter the pores of the diaphragm 26 and the pole piece. After the injection is completed, the handling robot removes the first fixture from the cavity and transfers it to the second aging device, where it is stored for a set period of time at a certain vacuum degree and temperature. After the aging is completed, the handling robot takes the first fixture out of the second aging device and transfers it to the formation device. The formation device includes a heating mechanism, a pressurizing mechanism, and a charging and discharging mechanism. In the cavity of the formation device, at a set temperature, a set pressure is applied to the first fixture. At the same time, the positive electrode fixture and the negative electrode fixture of the charging and discharging mechanism are respectively connected to the positive and negative electrodes of the battery cell, and all the batteries are charged with constant current for the same time or with constant current and constant voltage to the same potential. After the formation is completed, the handling robot takes out the first fixture from the cavity of the formation device, removes the pressure applied to the battery cell, and transfers it to the injection device for secondary injection. The sealing mechanism pulls out the rubber nail, and the infusion mechanism injects a set amount of the second electrolyte from the injection hole, and then the sealing mechanism plugs the sealing nail into the injection hole again. The handling robot takes the first fixture out of the cavity of the liquid injection device and transfers it to the third aging device, where it is stored for a set period of time at a certain vacuum degree and temperature.

[0130] In this embodiment, the liquid injection formation system receives incoming materials in units of fixtures, and multiple processes can operate the fixture units to avoid frequent loading and unloading of battery cells. The first fixture is transferred between different devices using a handling machine throughout the process. At the same time, the first fixture has an adjustable restraining force, which can quantitatively apply pressure to the battery cell, thereby improving the formation effect.

[0131] The optional technical solution of this embodiment also includes a finished product shipping system, which is used to perform finished product inspection on the formed battery cells, and to encode and package the battery cells that meet the finished product requirements for shipment. The finished product shipping system includes an electrical performance measuring device, a specification measuring device, an appearance inspection device, an encoding device and a packaging device; the electrical performance measuring device is used to detect the capacity, AC resistance, DC resistance, shipping voltage and self-discharge of the battery cells; the specification measuring device is used to detect the weight, length, width and height of the battery cells; the appearance inspection device is used to detect the appearance of the battery cells; the encoding device is used to assign a unique code to each pole core 30 that meets the shipment requirements, and the code includes the shipping information of the battery cells; the packaging device is used to package and ship the coded battery cells.

[0132] In this embodiment, the finished product delivery system includes an electrical performance measurement device, a specification measurement device, an appearance inspection device, a coding device and a packaging device. The electrical performance measurement device includes measurements of battery cell capacity, AC resistance, DC resistance, delivery voltage and self-discharge. The specification measurement device includes measurements of battery cell weight, length, width and height. The coding device assigns a unique code to each delivery pole core 30, and the code is associated with the battery certification qualification, production time and location, production equipment information, process production data, electrical performance information, specification information and manufacturer information. The packaging device is an automated manipulator, and the fixture moves the battery cell to the designated position, packs the outer shell film, and then transfers it to the designated warehouse by the handling robot to wait for delivery.

[0133] The optional technical solution of this embodiment also includes a real-time monitoring system, which is used to monitor the working information of the high-integration electrode production system, the working information of the integrated assembly system, the working information of the liquid injection formation system and the working information of the finished product shipping system in real time. The real-time monitoring system includes a cloud server, a terminal visualization platform, a slurry monitoring module, a electrode monitoring module, a tension monitoring module, an appearance monitoring module, a specification monitoring module, an electrical performance monitoring module and an operation monitoring module; the slurry monitoring module, the electrode monitoring module, the tension monitoring module, the appearance monitoring module, the specification monitoring module, the electrical performance monitoring module and the operation monitoring module are all connected to the cloud server in communication, and can upload the monitoring data to the cloud server in real time; the terminal visualization platform is used to retrieve the monitoring data received by the cloud server; the slurry monitoring module is used to monitor the high-integration The information of slurry in the process of producing positive and negative electrodes by the electrode production system; the electrode monitoring module is used to monitor the information of the electrode surface film in the process of producing positive and negative electrodes by the high-integration electrode production system; the tension monitoring module is used to monitor the information of the electrode tension in the process of producing positive and negative electrodes by the high-integration electrode production system; the appearance monitoring module is used to monitor the information of the electrode appearance in the process of producing positive and negative electrodes by the high-integration electrode production system, and the appearance information of the electrode core 30 and the battery cell in the process of the integrated assembly system making the electrode core 30 into a battery cell; the specification monitoring module is used to monitor the specification information of the battery cell; the electrical performance monitoring module is used to monitor the electrical performance information of the battery cell; the operation monitoring module includes monitoring cameras, which are set at the high-integration electrode production system, the integrated assembly system, the liquid injection formation system and the finished product shipping system.

[0134] In this embodiment, the real-time monitoring system uploads and monitors the key data of each work section in real time, including a cloud server, a terminal visualization platform, a slurry monitoring module, a pole piece monitoring module, a tension monitoring module, an appearance monitoring module, a specification monitoring module, an electrical performance monitoring module and an operation monitoring module. The data monitored by the real-time monitoring system are uploaded to the cloud server in real time, and the historical data or real-time data of the cloud server can be retrieved through the terminal visualization platform according to the preset authority. The slurry monitoring module is arranged at the intelligent batching device 34, specifically arranged in the auxiliary bin of the mixing device and the auxiliary bin of the slurry storage device. The auxiliary bin is also provided with a sampling mechanism and a waste collection mechanism. The slurry monitoring module includes a viscosity test, a solid content test and a fineness test. The action flow is as follows: the sampling mechanism in the auxiliary bin takes several grams of slurry from the slurry in the main bin at a set time interval. The slurry monitoring module measures multiple indicators at the same time and uploads data in real time. The measured slurry is discharged to the waste collection mechanism and recycled regularly. The pole piece monitoring module is set in the coating to winding / stacking section, including multiple X-ray or beta ray mechanisms to detect the wet film surface density, dry film surface density and dry film thickness after rolling. The pole piece is gridded for the above detection. Specifically, the average value of the data of several measurement points is summarized into a grid unit. The grid is the smallest unit for uploading data, and the monitored pole piece data is continuously and in real time uploaded to the cloud server. The intelligent battery production line is a highly integrated integrated production line with a high degree of interconnection between upstream and downstream sections. The tension monitoring module is particularly important for ensuring the normal operation of the entire line. The tension monitoring module includes unwinding tension detection, coating drive tension, pre-rolling drive tension, post-rolling drive tension, die-cutting / slitting drive tension and winding drive tension. The tension data of each section is uploaded to the cloud server in real time. The appearance monitoring module includes multiple photosensitive coupling components, which are set in various sections of the intelligent battery production line, from coating to winding or lamination. Similarly, the pole pieces are gridded and divided. At a certain interval, the width of the pole piece, the position of the pole ear, the surface morphology of the membrane, the neatness of the positive and negative pole pieces, the neatness of the diaphragm 26 and the burrs of the pole piece are monitored and uploaded; from hot pressing to helium inspection, the welding state, glue sticking state, aluminum shell and cover plate burrs of each battery cell are monitored and uploaded. The specification monitoring module includes a weighing mechanism and a dimension measurement mechanism, which detects and uploads the total weight of the battery cell, the weight of the first electrolyte, the weight of the second electrolyte, the length of the battery cell, the width of the battery cell and the height of the battery cell. The electrical performance monitoring module tests the first charge capacity, the first discharge capacity, the capacity division capacity, the DC internal resistance, the AC internal resistance, the self-discharge and the shipping voltage and uploads them to the cloud server. The operation monitoring module includes monitoring cameras set in various sections, warehouses or auxiliary equipment of the intelligent battery production line, and real-time video is uploaded and saved in the cloud server within a certain period.

[0135] The optional technical solution of this embodiment also includes a manufacturing execution system for remotely controlling the automated production of an intelligent battery production line. The manufacturing execution system includes a material management module, a data management module, an equipment management module, a production management module, a product management module, an enterprise standard management module and a remote management module; the material management module is used to manage the materials required for production; the data management module is used to process and analyze the information obtained by the real-time monitoring system, and determine whether the sample can be produced normally based on the analysis results. If an abnormality occurs, an abnormal alarm is issued and an instruction for resolving the abnormality is output. If normal, all information is associated with the same code; the equipment management module is used to read the information obtained by the real-time monitoring system and determine whether it is in a normal production state, and output instructions based on the judgment; the production management module is used to organize and manage production information online; the product management module is used to manage the inventory status of the product, the shipment quantity of the product, the client usage collection of the product and the market abnormality tracing of the product; the enterprise standard management module is used to manage quality standards, product standards, process standards, equipment operation standards and customer testing standards; the remote management module performs background supervision through images uploaded by surveillance cameras.

[0136] In this embodiment, the manufacturing execution system includes a material management module, a data management module, an equipment management module, a production management module, a product management module, an enterprise standard management module and a remote management module. The intelligent battery production line has a high degree of intelligence. Through a sophisticated manufacturing execution system, remote control and fully automated production can be achieved. The material management module includes the archiving of incoming material inspection reports, the archiving of supplier information, material quantity statistics, material batch information management, material storage area management and handling robot control instructions. In particular, in order to ensure continuous production, the module will set the upper and lower limits of material inventory according to production capacity. When the material is close to the lower limit, the manufacturing execution system will issue an alarm to notify procurement; each material is set with a batch code and an area code. After the material collection instruction is issued through the manufacturing execution system, the handling robot will arrive at the designated area to collect the specified batch of materials. The main function of the data management module is to process and analyze the data measured and collected by the real-time monitoring system, and judge whether the sample can be produced normally according to the analysis results. If an abnormality occurs, an abnormal alarm is issued and an instruction for solving the abnormality is output. In addition, the measurement data of the pole piece, pole core 30 and battery cell are associated with the same code (the code can be a QR code), so that each battery cell shipped out of the factory has complete manufacturing information for traceability. The equipment management module includes equipment status management, equipment maintenance and maintenance management, and whole line tension management. This module reads various parameters of the equipment during operation and judges whether the equipment is in normal production status. If an abnormality occurs, an abnormal alarm is issued and an instruction for solving the abnormality is output; at the same time, the module issues maintenance reminders based on the time and number of times the equipment and its components are operated and the working environment; in particular, this module integrates the tension of each section collected by the real-time monitoring system. When a certain section of tension suddenly changes abnormally, an instruction is issued to its upstream and downstream equipment, and the cache device starts to operate to prevent belt breakage. The production management module includes the following information to be organized and managed online: production orders, production plans and completion status, production line capacity status, and online statistics of defective products. The product management module includes product inventory status, product shipment quantity, client usage collection and market anomaly tracing. In particular, the tracing of abnormal products can be linked to the cell code. Through the cell code, all process data from ingredients to shipment can be queried to analyze the root cause of cell anomalies. The enterprise standard management module includes quality standards, product standards, process standards, equipment operation standards and customer testing standards. After the specified parameters are input in a standardized manner, they are sent to each section of equipment and testing agency. The remote management module includes cameras installed in each section or equipment, which can upload images in real time for background supervision.

[0137] The optional technical solution of this embodiment also includes a digital twin system, which is used to virtually simulate the highly integrated electrode production system, the integrated assembly system, the liquid injection formation system and the battery cell, and is coupled with the actual operating status of the highly integrated electrode production system, the integrated assembly system and the liquid injection formation system to feedback the simulated dynamics of the highly integrated electrode production system, the integrated assembly system and the liquid injection formation system in a visualization window.

[0138] In the optional technical solution of this embodiment, the digital twin system is also used to perform electrochemical, thermal and dynamic simulations of the battery cells.

[0139] In this embodiment, the digital twin system is a virtual simulation of the equipment and the battery cell, coupled with the actual operating status, showing the current health status of the equipment and the battery cell, predicting the service life and predicting potential failures, including mechanical and thermal simulation of the intelligent batching device 34, the double-sided coating device 35, the suspended baking device 17, the rolling device 36, the film making device 37, the winding / stacking device, the transmission device, the hot pressing device, the welding device, the matching shell device and the helium inspection device. Through the latest operating data, the simulated dynamics of each production device in the intelligent battery production line can be fed back in the visualization window. In addition, for battery cell products, the overall performance and remaining service life of different batches of batteries in the market are predicted through electrochemical, thermal and kinetic simulations.

[0140] The optional technical solution of this embodiment also includes an electrical control system for controlling the operating status of the intelligent battery production line, the electrical control system includes a master control system and control devices of each work section, and the control devices of each work section include a PLC, a host computer, and a servo motor, a hydraulic mechanism, and a pneumatic mechanism electrically connected to the PLC and the host computer; the master control system is communicatively connected to the PLC and the host computer, and the master control system is used to edit the language logic of each work section and send it to the PLC or host computer corresponding to each work section to control the servo motor, hydraulic mechanism, and pneumatic mechanism.

[0141] In this embodiment, the electrical control system includes a master control system and control devices for each work section. The electrical control of each work section is composed of a PLC, a host computer, a servo motor, a hydraulic mechanism, and a pneumatic mechanism. The language logic of each work section is edited by the master control system and sent to the PLC or host computer of each work section to realize the control of the entire line.

[0142] The current mainstream production line model has the following problems: 1. It is managed by zoning, with a low degree of integration; 2. The proportion of manual management is large, and it is difficult to achieve the ultimate production efficiency; 3. The data measurement system is imperfect and the real-time performance is poor; 4. The product consistency is poor; 5. The product traceability is low and the production management is chaotic; 6. The finished product is high and the production capacity is difficult to break through; 7. The degree of intelligence is low, mainly relying on experience and experimental results, and abnormal handling is time-consuming and laborious. The intelligent battery production line provided in this embodiment realizes integrated connectivity through a highly integrated pole piece production system, an integrated assembly system, a liquid injection formation system, a finished product shipping system, a real-time monitoring system, a manufacturing execution system, a digital twin system and an electrical control system, which solves the problems that the existing mainstream production line model is managed by zoning, with a low degree of integration; the proportion of manual management is large, and it is difficult to achieve the ultimate production efficiency; the data measurement system is imperfect and the real-time performance is poor; the product consistency is poor; the product traceability is low, and the production management is chaotic; the finished product is high and the production capacity is difficult to break through; the degree of intelligence is low, mainly relying on experience and experimental results, and the abnormal handling is time-consuming and laborious, and can realize unmanned production with high intelligence.

[0143] It should be noted that the intelligent battery production line provided in this embodiment can produce lithium-ion batteries, sodium-ion batteries and potassium-ion batteries.

[0144] 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. An intelligent battery production line, characterized in that: include: Highly integrated electrode production system and liquid injection formation system; The highly integrated electrode sheet production system comprises a frame, a winding and laminating device (38), and a double-layer production line arranged on the frame, wherein one layer of the double-layer production line is a positive electrode sheet production line and is used to make positive electrode sheets from positive electrode foil, and the other layer is a negative electrode sheet production line and 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, the winding and laminating device (38) is used to make the positive electrode sheets and the negative electrode sheets into electrode cores (30), and the electrode cores (30) are used to make battery cells; The liquid injection and formation system is used to inject electrolyte into the battery core and perform formation.

2. The intelligent battery production line according to claim 1, characterized in that: The highly integrated electrode production system further comprises 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 intelligent battery production line according to claim 1, characterized in that: 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.

4. The intelligent battery production line according to claim 1, characterized in that: Also included is an integrated assembly system for manufacturing the pole core (30) into the battery core, the integrated assembly system comprising a transmission device, a hot pressing device, a first welding device, a matching shell insertion device, a second welding device and a helium detection device; The transmission device is used to sequentially transport the pole core (30) to the hot pressing device, the first welding device, the paired shell device, the second welding device and the helium inspection device, and is capable of rejecting defective samples produced by any one of the hot pressing device, the first welding device, the paired shell device, the second welding device and the helium inspection device; The hot pressing device is used to perform hot pressing bonding on the pole core (30); The first welding device is used to connect the multiple layers of pole tabs of the pole core (30) after thermal compression bonding into a pole tab group; The matching shell insertion device is used to insert the pole core (30) into the shell after the multiple layers of pole tabs are connected into a pole tab group; The second welding device is used to connect the pole lug group of the pole core (30) installed in the shell with the cover plate, and to connect the cover plate with the shell to form a battery core; The helium detection device is used to perform leak detection on the battery cell.

5. The intelligent battery production line according to claim 1, characterized in that: Also included is an integrated assembly system for manufacturing the pole core (30) into the battery core, the integrated assembly system comprising a transmission device, a hot pressing device, a first welding device, a shell punching device and a heat sealing device; The transmission device is used to sequentially transport the pole core (30) to the hot pressing device, the first welding device, the shell punching device and the heat sealing device, and is capable of rejecting defective samples produced by any one of the hot pressing device, the first welding device, the shell punching device and the heat sealing device; The hot pressing device is used to perform hot pressing bonding on the pole core (30); The first welding device is used to connect the multiple layers of pole tabs of the pole core (30) after thermal compression bonding into a pole tab group; The shell punching device is used to punch the aluminum-plastic film material into a battery shell of a predetermined shape and size; The heat sealing device melts the heat sealing layer of the aluminum-plastic film material by heating, and packages the aluminum-plastic film into a battery shell, so as to seal the battery core into a battery core.

6. The intelligent battery production line according to claim 1, characterized in that: The liquid injection and formation system comprises an aging device, a liquid injection device and a formation device; The aging device is used to age the battery core, the injection device is used to inject electrolyte into the battery core, and the formation device is used to form the battery core.

7. The intelligent battery production line according to claim 5, characterized in that: It also includes a finished product shipping system, which is used to perform finished product inspection on the formed battery cells, and encode and package the battery cells that meet the finished product requirements before shipping, and the finished product shipping system includes an electrical performance measuring device, a specification measuring device, an appearance inspection device, a coding device, and a packaging device; The electrical performance measuring device is used to detect the capacity, AC resistance, DC resistance, shipping voltage and self-discharge of the battery cell; The specification measuring device is used to detect the weight, length, width and height of the battery cell; The appearance inspection device is used to inspect the appearance of the battery cell; The encoding device is used to assign a unique code to each of the pole cores (30) that meet the shipment requirements, and the code includes the shipment information of the battery core; The packaging device is used to package the coded battery cells for shipment.

8. The intelligent battery production line according to claim 7, characterized in that: It also includes a real-time monitoring system, which is used to monitor the working information of the high-integration electrode production system, the working information of the integrated assembly system, the working information of the liquid injection formation system, and the working information of the finished product shipping system in real time. The real-time monitoring system includes a cloud server, a terminal visualization platform, a slurry monitoring module, a electrode monitoring module, a tension monitoring module, an appearance monitoring module, a specification monitoring module, an electrical performance monitoring module, and an operation monitoring module; The slurry monitoring module, the electrode monitoring module, the tension monitoring module, the appearance monitoring module, the specification monitoring module, the electrical performance monitoring module and the operation monitoring module are all connected to the cloud server in communication, and are all capable of uploading monitoring data to the cloud server in real time; The terminal visualization platform is used to retrieve the monitoring data received by the cloud server; The slurry monitoring module is used to monitor the slurry information during the production of positive electrode sheets and negative electrode sheets by the highly integrated electrode sheet production system; The electrode monitoring module is used to monitor the information of the electrode surface film during the production of positive electrode sheets and negative electrode sheets by the highly integrated electrode production system; The tension monitoring module is used to monitor information on the tension of the electrode sheets during the production of positive electrode sheets and negative electrode sheets by the highly integrated electrode sheet production system; The appearance monitoring module is used to monitor information on the appearance of the positive and negative pole pieces during the production process of the highly integrated pole piece production system, and information on the appearance of the pole core (30) and the battery cell during the process of the integrated assembly system making the pole core (30) into a battery cell; The specification monitoring module is used to monitor the specification information of the battery cell; The electrical performance monitoring module is used to monitor the electrical performance information of the battery cell; The operation monitoring module includes monitoring cameras, which are arranged at the highly integrated electrode production system, the integrated assembly system, the liquid injection formation system and the finished product shipping system.

9. The intelligent battery production line according to claim 8, characterized in that: It also includes a manufacturing execution system for remotely controlling the automated production of the intelligent battery production line, the manufacturing execution system including a material management module, a data management module, an equipment management module, a production management module, a product management module, an enterprise standard management module and a remote management module; The material management module is used to manage the materials required for production; The data management module is used to process and analyze the information obtained by the real-time monitoring system, and determine whether the sample can be produced normally according to the analysis results. If an abnormality occurs, an abnormality alarm is issued and an instruction for solving the abnormality is output. If normal, all information is associated with the same code; The equipment management module is used to read the information obtained by the real-time monitoring system and determine whether it is in a normal production state, and output instructions based on the judgment; The production management module is used to organize and manage production information online; The product management module is used to manage the inventory status of products, the shipment quantity of products, the collection of client usage of products, and the market abnormality tracing of products; The enterprise standard management module is used to manage quality standards, product standards, process standards, equipment operation standards and customer testing standards; The remote management module performs background supervision through the images uploaded by the monitoring camera.

10. The intelligent battery production line according to claim 5, characterized in that: It also includes a digital twin system, which is used to virtually simulate the highly integrated electrode production system, the integrated assembly system, the liquid injection formation system and the battery cell, and is coupled with the actual operating status of the highly integrated electrode production system, the integrated assembly system and the liquid injection formation system to feedback the simulated dynamics of the highly integrated electrode production system, the integrated assembly system and the liquid injection formation system in a visualization window.

11. The intelligent battery production line according to claim 10, characterized in that: The digital twin system is also used to perform electrochemical, thermal and dynamic simulations on the battery cell.

12. The intelligent battery production line according to claim 1, characterized in that: It also includes an electrical control system for controlling the operating state of the intelligent battery production line, the electrical control system includes a master control system and control devices of each section, and the control devices of each section include a PLC, a host computer, and a servo motor, a hydraulic mechanism, and a pneumatic mechanism electrically connected to the PLC and the host computer; The master control system is communicatively connected with the PLC and the host computer, and is used to edit the language logic of each work section and send it to the PLC or the host computer corresponding to each work section to control the servo motor, the hydraulic mechanism and the pneumatic mechanism.

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