关键词: 动力电池系统；结构设计；电气设计；热管理系统设计

Abstract: The power battery system is the source of power for new energy electric vehicles, and as a key component of electric vehicles, its design rationality and safety plays a crucial role in electric vehicles. This article is based on the needs of a certain vehicle company to develop and design a 28 kWh power battery system. The article mainly provides a detailed design and analysis of the power battery system from three aspects: the layout and design of the overall structure of the battery system, the design of the battery electrical system, and the design of the battery thermal management system. The design is reasonable through the analysis and verification of the size chain on the structure, and the feasibility of its performance is verified through simulation analysis of its thermal management system. This design provides a certain theoretical basis for further optimization and experimental verification of the battery system in the future, and also provides a certain reference value for battery system developers.

Key words: Power battery system; Structural design; Electrical design; Design of thermal management system