Manufacturing system and method of power battery

Abstract

The invention provides a power battery manufacturing system and method.The system comprises a virtual subsystem and an entity subsystem, the virtual subsystem is used for simulating a design template of a power battery of a target model to determine whether the power battery of the target model meets production requirements or not, and if not, the design template is modified; and the entity subsystem is used for acquiring the target design template which is sent by the virtual subsystem and meets the production requirements, and producing the power battery of the target model based on the target design template, so that the development period of the power battery is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a system and method for manufacturing a power battery. Background Art

[0002] The core component of new energy vehicles is the power battery, which is also the heart of mobile products and the basic unit for energy storage and conversion of new energy vehicles. The level of its technological development will become a key support point for the electrification transformation of the global automotive industry. However, in the traditional manufacturing industry, the production design cycle of power batteries is long and the production efficiency is low. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a system and method for manufacturing a power battery, so as to shorten the development cycle of the power battery and improve production efficiency.

[0004] In a first aspect, the present invention provides a power battery manufacturing system, the system comprising:

[0005] A virtual subsystem is used to simulate the design template of the target model of power battery to determine whether the target model of power battery meets the production requirements. If not, the design template is modified;

[0006] The physical subsystem is used to obtain the target design template that meets the production requirements sent by the virtual subsystem, and produce the target model of power battery based on the target design template.

[0007] In an optional embodiment, the design template includes process parameters of multiple components of the power battery, and the virtual subsystem includes:

[0008] An integration module is used to simulate the transport routes of each component based on the acquired design template to determine the optimal transport route;

[0009] Verification module, used to modify the design template;

[0010] The process planning module is used to simulate the manufacturing and assembly process of each component of the power battery based on the acquired design template to determine whether the design template meets the production requirements. If it does, the design template is sent to the physical subsystem; if not, the design template is sent to the verification module.

[0011] In an optional embodiment, the virtual subsystem further includes a simulation production module, and the process planning module is further used to simulate the manufacturing and assembly process of each component of the power battery based on the acquired design template to determine whether the design template meets the production requirements, and if so, send the design template to the simulation production module;

[0012] The simulation production module performs large-scale production simulation based on the acquired design template to determine whether the produced power battery products meet the factory requirements. If so, the design template is sent to the physical subsystem.

[0013] In an optional embodiment, the entity subsystem includes:

[0014] A first execution module, configured to perform semi-automatic production of a first number of power batteries based on a target design template that meets the production requirements, to determine whether the produced power batteries meet the error requirements, and if so, to send the target design template to a second execution module;

[0015] The second execution module is used to perform automated production of a second quantity of power batteries based on the target design template.

[0016] In an optional embodiment, the entity subsystem further includes:

[0017] The storage management module is used to create and store a digital archive for each power battery generated by the second execution module.

[0018] In an optional embodiment, the virtual subsystem also includes a process standardization module for determining a corresponding manufacturing process for each model of power battery based on the manufacturing requirements of the power battery, and the manufacturing process includes multiple manufacturing nodes.

[0019] In an optional implementation, the process standardization module is also used to determine, for each manufacturing node, communication information between the production equipment corresponding to the manufacturing node and the physical subsystem.

[0020] In an optional embodiment, the virtual subsystem further includes a modeling module for creating a power battery production model and a power battery model based on the acquired design template.

[0021] In a second aspect, the present invention provides a method for manufacturing a power battery, the method comprising:

[0022] Simulate the design template of the target model of power battery to determine whether the target model of power battery meets the production requirements. If not, modify the design template;

[0023] Produce target model power batteries based on target design templates.

[0024] In an optional embodiment, the step of producing a target model of a power battery based on a target design template specifically includes:

[0025] Based on the target design template that meets the production requirements, a first number of semi-automated power batteries are produced to determine whether the produced power batteries meet the error requirements. If so, a second number of automated power batteries are produced based on the target design template.

[0026] The present application provides a power battery manufacturing system and method, the system includes a virtual subsystem and a physical subsystem, wherein the virtual subsystem is used to simulate the design template of the target model of the power battery to determine whether the target model of the power battery meets the production requirements, and if not, the design template is modified; the physical subsystem is used to obtain the target design template that meets the production requirements sent by the virtual subsystem, and produce the target model of the power battery based on the target design template. The intelligent battery manufacturing system can pre-simulate the design scheme of the product, and then put the design scheme into production, which can increase the speed of the power battery from the scheme to the production, reduce the trial and error cost, and improve the product quality of the power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of a power battery manufacturing system provided in an embodiment of the present application;

[0029] Figure 2 A flowchart of the steps for standardizing intelligent manufacturing of power batteries provided in an embodiment of the present application;

[0030] Figure 3 A schematic diagram of a power battery manufacturing model system provided in this application;

[0031] Figure 4 A schematic diagram of a power battery digital development system provided in this application. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0033] Figure 1 This is a schematic diagram of the structure of a power battery manufacturing system provided in an embodiment of the present application. Figure 1 As shown, the power battery manufacturing system includes a virtual subsystem and a physical subsystem.

[0034] The virtual subsystem is used to simulate the design template of the target model of the power battery to determine whether the target model of the power battery meets the production requirements. If not, the design template is modified.

[0035] The physical subsystem is used to obtain the target design template that meets the production requirements and is sent by the virtual subsystem, and to produce a power battery of a target model based on the target design template.

[0036] The design template here includes the process parameters of multiple components of the power battery, which are pre-designed by the battery designer. For example, the design template may include the process parameters of the pole piece, the process parameters of the battery cell, and the process parameters of the battery pack. The process parameters of the pole piece may include the positive and negative electrode materials, the diaphragm materials, etc. The process parameters of the battery cell may include the length and thickness of the battery cell, etc. The process parameters of the battery pack may include the model of each component, the installation position coordinates, the shell material, the shell size, etc.

[0037] The virtual subsystem includes integration module, verification module and process planning module.

[0038] The integration module is used to simulate the transport routes of each component based on the acquired design template to determine the optimal transport route. The integration module here is used to simulate the transport routes of each component between warehouses or assembly line node devices based on the components indicated in the design template to determine the optimal transport route with the shortest time or the least resource consumption.

[0039] The verification module is used to modify the design template. The verification module can adjust and optimize the design template according to the simulation results of other modules, and can also modify and update the design template according to the configuration of the designer.

[0040] The process planning module is used to simulate the manufacturing and assembly process of each component of the power battery based on the acquired design template to determine whether the design template meets the production requirements. If so, the design template is sent to the entity subsystem. If not, the design template is sent to the verification module. The process planning module here is used to simulate the actual production process of the power battery to verify whether there are problems with the power battery production process or whether it meets the standard requirements, such as whether the position is accurate during the installation of the battery pack, whether the pole piece material is applicable, whether the battery cell seal is complete, and whether the wiring harness connection is correct. If there is a problem with the simulation result, the design template will be sent back to the verification module for automatic or manual adjustment. If there is no problem with the simulation result, it can be determined that the design template can be put into production.

[0041] Furthermore, the virtual subsystem also includes a simulation production module, and the process planning module is also used to simulate the manufacturing and assembly processes of various components of the power battery based on the acquired design template to determine whether the design template meets the production requirements. If so, the design template is sent to the simulation production module.

[0042] The simulation production module performs large-scale production simulation based on the acquired design template to determine whether the produced power battery products meet the factory requirements. If they do, the design template will be sent to the entity subsystem. The simulation production module here is mainly used to simulate the parameters of the produced power battery products to inspect the power battery products, such as error detection of key parameters such as voltage, current, and SOC. If the detected error is less than the preset error, it can be determined that the design template can be put into production. If the detected error is greater than the preset error, the design template can be returned to the verification module to enter a new round of simulation judgment.

[0043] In one embodiment of the present application, the entity subsystem includes a first execution module and a second execution module.

[0044] Among them, the first execution module is used to perform a first quantity of semi-automatic power battery production based on a target design template that meets the production requirements to determine whether the produced power batteries meet the error requirements. If so, the target design template is sent to the second execution module.

[0045] The first execution module here is used for equipment control and data management in the semi-automatic production of small-scale power batteries. Small-scale production is usually carried out manually, and then the physical power batteries produced are inspected to see if they meet the error requirements. If they do, the target design template is determined to be ready for large-scale production.

[0046] The second execution module is used to produce a second number of automated power batteries based on the target design template. The second execution module here is used for equipment control and data management for large-scale automated production of power batteries, etc. For example, control the handling robot to call components, control the robotic arm to assemble battery packs, weld between components, control the cutting of lugs, etc. The information of each component can also be identified and recorded to form a complete production record.

[0047] Specifically, the entity subsystem also includes a storage management module, which is used to create and store a digital archive for each power battery generated by the second execution module.

[0048] A complete digital archive is established for each power battery, including production information and raw material information of each production process. For example, what material is the electrolyte of a power battery, and the factory, workshop, production line, equipment, tools, supervisor, production batch, time, etc. when the electrolyte is added. In this way, if there is an abnormality in the power battery, it can be traced and the responsibility can be implemented.

[0049] Power battery technology lacks complete standards for its design, manufacturing, inspection, and use, especially for the interconnection criteria, integration interfaces, integration functions, and integration capability standards of lithium battery industry equipment, as well as the integration of field equipment and systems, integration between systems, and system interoperability. It is necessary to systematically sort out the existing relevant basic standards and clarify the needs for power battery manufacturing integration. From the basic commonalities, key technologies, and power battery industry applications, a complete set of standard systems should be established to support the healthy and orderly development of the power battery industry.

[0050] Figure 2 A flowchart of the steps for standardizing the intelligent manufacturing of power batteries provided in the embodiment of the present application. Figure 2 As shown, in one embodiment of the present application, the virtual subsystem further includes a process standardization module, which is used to determine the corresponding manufacturing process for each model of power battery based on the manufacturing requirements of the power battery, and the manufacturing process includes multiple manufacturing nodes. The process standardization module is also used to determine the communication information between the production equipment corresponding to each manufacturing node and the physical subsystem.

[0051] First, we need to standardize battery specifications and formulate power battery size specification standards, and limit battery specifications to about 10 types. Secondly, we need to standardize power battery design and foundation, and establish power battery field metadata standards. Metadata is the basis for power battery design, manufacturing, and application. SDS / T 2111-2004 "Principles and Methods for Metadata Standardization" stipulates the selection principles for field metadata formulation, and this principle can be used to formulate power battery field metadata standards. Finally, we need to standardize power battery manufacturing. The power battery manufacturing process is complex, the process is long, and there are many production line production equipment. Moreover, the production equipment of the same production line often comes from different equipment manufacturers, using different communication interfaces and communication protocols, and there is a lack of interconnection and interoperability between the equipment. Establish a battery manufacturing process data dictionary standard, unify the equipment model, formulate equipment communication interface specifications, conduct data governance, realize the integration of production line equipment and enterprise information systems, and realize the deep integration of operational technology (OT) and information technology (IT). Then, use the industrial Internet platform to realize internal and external information integration of the enterprise, and optimize the allocation of battery manufacturing resources and process control.

[0052] Figure 3 This is a schematic diagram of a power battery manufacturing model system provided in this application. Figure 3 As shown, mathematical model is the foundation of intelligence. It is the basic means to transform manufacturing plants, materials, machines, and processes into something that can be recognized, optimized, and improved by computers. In power battery manufacturing, it is necessary to establish battery models, factory models, equipment models, process models, and quality models. In an optional embodiment, the virtual subsystem also includes a modeling module for creating a power battery production model and a power battery model based on the acquired design template.

[0053] Modeling is the basis for digital manufacturing. The model needs to be able to accurately and completely describe the real properties of the object. At the same time, the establishment of the model is a process of continuous adjustment and optimization. Modeling and digitization are mutually reinforcing processes. For physical quantities or processes with theoretical models, they can be digitized using existing models. For physical quantities or processes that do not have models or are difficult to describe with accurate theoretical models, data can be collected first and a digital model can be established through digital analysis. This method can well solve the arithmetic and quality optimization problems in the manufacturing process.

[0054] Figure 4 This is a schematic diagram of a power battery digital development system provided in this application. Figure 4 As shown in Figure 1, the power battery industry needs to establish a digital research and development system, including digital design, digital manufacturing and digital application. Digital design includes material design, structural design and process design. In the battery design process, it is necessary to use professional product design tools and structural design tools, and establish electrochemical simulation models and battery life models.

[0055] Digital manufacturing includes process planning, equipment development, system integration, etc. By using technical means such as factory simulation, process simulation, and virtual debugging, a digital twin mapping system of the actual production process and the virtual production process is established. Designers use the simulation environment provided by the software to design and optimize products and production processes, thereby shortening the cycle from product conception to production, reducing errors and reducing costs.

[0056] Digital applications include battery quality control, the establishment of a battery traceability system, and product big data analysis. In order to realize digital applications, it is necessary to establish a full life cycle data management application platform for power battery design, manufacturing, quality traceability, and cascade utilization.

[0057] By establishing a full-process system for digital design, manufacturing, and application of power batteries, efficient battery design, high-quality manufacturing, low-cost production, and reliable safety management and control can be achieved.

[0058] In a specific embodiment, an information model of a power battery manufacturing system can be established, equipment, materials, and information systems can be modeled, and a model base enterprise (MBE) based on model definition can be established to realize the digitization of the model. The realization of digitization can provide a foundation for intelligence based on big data. With the model, digitization can be carried out, and the physical model and the virtual model can be interconnected through digital connection to form a digital twin. Through the digital twin, the system can be optimized and virtual debugging can be realized.

[0059] Intelligence refers to the mining of hidden problems based on data analysis results, and the generation of different applications such as description, diagnosis, prediction, decision-making, and control, thereby forming optimized decision-making recommendations or direct control instructions, realizing innovative models such as personalized customization, intelligent production, collaborative organization, and service-oriented manufacturing, and storing the results in a digital form, ultimately forming a continuous optimization closed loop from data collection to equipment, production sites, and enterprise operations management to improve the qualification rate, consistency, and safety of battery manufacturing.

[0060] This application provides a method and technology for the intelligent manufacturing of power batteries. It mainly takes electric vehicle power batteries as the research object, and conducts research on the physical and chemical characteristics and intelligent manufacturing technology of power batteries. By simplifying all components of power batteries, standardizing and modeling, and then realizing the digitization and intelligence of all components, the intelligent manufacturing of electric vehicle power batteries is finally completed. The intelligent manufacturing of power batteries is realized by using relevant algorithms, which improves the accuracy of battery assembly and has good practical and application value in the process of using artificial intelligence (AI). Its specific contents include:

[0061] The first step is standardization: formulate power battery size specification standards, establish metadata standards in the power battery field, establish battery manufacturing process data dictionary standards, unify equipment models, formulate equipment communication interface specifications, conduct data governance, realize the integration of production line equipment and enterprise information systems, realize the deep integration of operational technology (OT) and information technology (IT), use the industrial Internet platform to realize internal and external information integration of the enterprise, and optimize battery manufacturing resource allocation and process control.

[0062] The second step is modeling: accurately and completely describe the real properties of the object, and continuously adjust and optimize it. For physical quantities or processes with theoretical models, the existing models can be used to digitize them; for physical quantities or processes that do not have models or are difficult to describe with accurate theoretical models, data can be collected first and a digital model can be established through digital analysis.

[0063] The third step is digitalization: Use professional product design tools and structural design tools to establish electrochemical simulation models and battery life models; use factory simulation, process simulation, virtual debugging and other technical means to establish a digital twin mapping system between the actual production process and the virtual production process; use the simulation environment provided by the software to design and optimize products and production processes, and establish a full life cycle data management application platform for power battery design, manufacturing, quality traceability and cascade utilization.

[0064] Step 4: Intelligence: Uncover hidden problems and generate different applications such as description, diagnosis, prediction, decision-making, and control, so as to form optimized decision-making recommendations or direct control instructions, realize innovative models such as personalized customization, intelligent production, collaborative organization, and service-oriented manufacturing, and store the results in a digital form, ultimately forming a continuous optimization closed loop from data collection to equipment, production site, and enterprise operation management.

[0065] The intelligent manufacturing method for power batteries provided in this application greatly improves product consistency, can reduce product testing links in the battery production process, and simplify some manufacturing processes, thereby effectively improving production efficiency.

[0066] It also improves the safety and qualification rate of power battery manufacturing and greatly improves product quality. At the same time, it can directly guide the design improvement of electric vehicles and power batteries from a mechanism perspective, helping to improve the life and safety of electric vehicles and batteries.

[0067] It can also shorten the cycle from product conception to production, reduce errors and lower costs. At the same time, it can form an empirical analysis model and apply it to the design and optimization of other related manufacturing fields.

[0068] In one embodiment of the present application, the present invention provides a method for manufacturing a power battery, the method comprising:

[0069] The design template of the target model of power battery is simulated to determine whether the target model of power battery meets the production requirements. If not, the design template is modified; the target model of power battery is produced based on the target design template.

[0070] Specifically, the steps of producing a target model of power battery based on the target design template include:

[0071] Based on the target design template that meets the production requirements, a first number of semi-automated power batteries are produced to determine whether the produced power batteries meet the error requirements. If so, a second number of automated power batteries are produced based on the target design template.

[0072] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0073] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0074] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0075] It should be noted that if the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can essentially be embodied in the form of a software product, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM) random access memory (RAM), disk or optical disk, and other media that can store program codes.

[0076] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0077] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power battery manufacturing system, characterized in that: The system comprises: A virtual subsystem, wherein the virtual subsystem is used to simulate a design template of a target model of a power battery to determine whether the target model of the power battery meets the production requirements, and if not, to modify the design template; The physical subsystem is used to obtain the target design template that meets the production requirements and is sent by the virtual subsystem, and to produce a power battery of a target model based on the target design template.

2. The system according to claim 1, characterized in that The design template includes process parameters of multiple components of the power battery, and the virtual subsystem includes: An integration module is used to simulate the transport routes of each component based on the acquired design template to determine the optimal transport route; Verification module, used to modify the design template; The process planning module is used to simulate the manufacturing and assembly process of each component of the power battery based on the acquired design template to determine whether the design template meets the production requirements. If so, the design template is sent to the physical subsystem; if not, the design template is sent to the verification module.

3. The manufacturing system according to claim 2, characterized in that: The virtual subsystem further includes a simulation production module, and the process planning module is further used to simulate the manufacturing and assembly process of each component of the power battery based on the acquired design template to determine whether the design template meets the production requirements, and if so, send the design template to the simulation production module; The simulation production module performs large-scale production simulation based on the acquired design template to determine whether the produced power battery products meet the factory requirements. If yes, the design template is sent to the entity subsystem.

4. The system according to claim 1, characterized in that The entity subsystem includes: A first execution module, configured to perform semi-automatic production of a first number of power batteries based on a target design template that meets the production requirements, to determine whether the produced power batteries meet the error requirements, and if so, to send the target design template to a second execution module; The second execution module is used to perform automated production of a second quantity of power batteries based on the target design template.

5. The system according to claim 4, characterized in that The entity subsystem also includes: The storage management module is used to create and store a digital archive for each power battery generated by the second execution module.

6. The system according to claim 1, characterized in that The virtual subsystem also includes a process standardization module, which is used to determine a corresponding manufacturing process for each model of power battery based on the manufacturing requirements of the power battery, and the manufacturing process includes multiple manufacturing nodes.

7. The system according to claim 6, characterized in that The process standardization module is also used to determine, for each manufacturing node, communication information between the production equipment corresponding to the manufacturing node and the physical subsystem.

8. The system according to claim 1, characterized in that The virtual subsystem also includes a modeling module, which is used to create a power battery production model and a power battery model based on the acquired design template.

9. A method for manufacturing a power battery, characterized in that: The method comprises: Simulating a design template of a target model of power battery to determine whether the target model of power battery meets production requirements, and if not, modifying the design template; Produce target model power batteries based on target design templates.

10. The method according to claim 9, characterized in that The step of producing a target model of power battery based on the target design template specifically includes: Based on a target design template that meets production requirements, a first number of semi-automated power batteries are produced to determine whether the produced power batteries meet error requirements. If so, a second number of automated power batteries are produced based on the target design template.

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