Abstract
Automation equipment with different functions from different manufacturers is common in lithium ion battery manufacturing workshops, which is manifested as heterogeneous data distributed at different network levels at the information level. The interconnection between a workshop system and equipment is the basis for realizing manufacturing informatization and intelligence, and is a core problem of intelligent manufacturing workshop integration. The key to solve this problem is to establish a standardized and consistent information model. Aiming at the problem of information interconnection, this paper established an information model of the intelligent manufacturing workshop of lithium ion batteries based on the analysis of the architecture, functional categories, and information interaction of the intelligent manufacturing workshop. Then, by clarifying the attribute set, component set, and the information objects contained in each information model, the hierarchical architecture of the information model was constructed. Then, the rules that map the information model in to the OLE for Process Control Unified Architecture (OPC UA) address space is established. The approach for implementing data storage and interaction of the information model based on the OPC UA server/client are also discussed. Finally, taking the soft-pack battery manufacturing workshop as an example, the information model is applied to realize the interconnection and interoperability of production management data, material management data, equipment management data, and quality management data among various levels of the workshop, which verifies the feasibility of the proposed information model.
Highlights
After the Second Industrial Revolution, society developed rapidly
Based on the core function category, organizational structure, and information interaction of an intelligent manufacturing workshop, this paper proposes a set of information model architectures suitable for an intelligent manufacturing workshop of lithium ion batteries, defines various attributes and attribute objects of the information model, and establishes the hierarchical architecture of the information model, which enables all data in the workshop to be described based on a standard protocol, a unified format, and the same language, realizing barrier-free circulation and sharing of data in the workshop
A set of intelligent manufacturing information systems is developed and the information interaction mode of equipment layer, workshop layer, and enterprise layer in the intelligent manufacturing workshop is established based on the information model of OLE for Process Control Unified Architecture (OPC UA) protocol, which realizes the information interconnection and interoperation among all levels in an intelligent manufacturing workshop for lithium ion batteries
Summary
After the Second Industrial Revolution, society developed rapidly. The extensive use of traditional fossil energy combustion brought serious environmental pollution, and caused a great energy crisis. There are some pieces of research and applications on workshop information models at home and abroad, most of them are the real-time collection of production factors and equipment for equipment and control layer, and are committed to solving the data collection and production process monitoring at the bottom layer They did not systematically consider the production process, and could not realize the interconnection of information between various levels of the workshop, could not reflect the function of the intelligent manufacturing workshop. Based on the core function category, organizational structure, and information interaction of an intelligent manufacturing workshop, this paper proposes a set of information model architectures suitable for an intelligent manufacturing workshop of lithium ion batteries, defines various attributes and attribute objects of the information model, and establishes the hierarchical architecture of the information model, which enables all data in the workshop to be described based on a standard protocol, a unified format, and the same language, realizing barrier-free circulation and sharing of data in the workshop. A set of intelligent manufacturing information systems is developed and the information interaction mode of equipment layer, workshop layer, and enterprise layer in the intelligent manufacturing workshop is established based on the information model of OPC UA protocol, which realizes the information interconnection and interoperation among all levels in an intelligent manufacturing workshop for lithium ion batteries
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