电池箱体是储能电力系统内的重要组成部分，单体电芯、结构件、电气件通过电池箱体进行集成，从而形成最小的电力系统单元。电池箱体需要实现对电芯及其他器件的承载功能，同时还需考虑强度、密封、成本等问题。目前国内储能市场处于起步阶段，对电池箱体技术的研究尚未成熟。本文通过对目前市场主流液冷箱体进行对比研究，提出一种型材式液冷箱体的设计方案。阐述了液冷下箱体的结构组成部分，包括下箱体的工业成型方式、关键尺寸参数、主要焊接方式与承重部位的设计方案。本文着重介绍了挤出铝型材截面的结构设计与型材之间的焊接方案，确保液冷流道可直接承载电池模组的重量，同时具备极高的流道密封性能。为了验证该设计方案的力学性能，使用CAE仿真分析技术进行了静态承重工况仿真、吊装工况仿真、随机振动工况仿真。结合具体使用工况，分析仿真结果，得出该箱体满足现有储能系统使用工况中的力学性能要求，为其他液冷电池箱体的设计提供参考。

Battery box is an important part of the energy storage power system, single cell, structural components, electrical components through the battery box for integration, so as to form the smallest power system unit.Battery box needs to realize the battery cell and other devices to carry the function, but also need to consider the strength, sealing, cost and other issues.At present, the domestic energy storage market is in its infancy, and the research on battery box technology has not yet matured.In this paper, through the comparative study of the mainstream liquid-cooled box in the current market, a profile-type liquid-cooled box design program is proposed.The structural components of the liquid-cooled lower case are described, including the industrial molding method of the lower case, key dimensional parameters, the main welding method and the design of the load-bearing parts.This paper focuses on the structural design of the extruded aluminum profiles and the welding scheme between the profiles to ensure that the liquid-cooled runner can directly carry the weight of the battery module and at the same time have a very high sealing performance of the runner.In order to verify the mechanical performance of the design, CAE(Computer Aided Engineering) simulation and analysis technology is used to carry out static load-bearing working condition simulation, lifting working condition simulation, random vibration working condition simulation.Combined with the specific use conditions, the simulation results were analyzed, and it was concluded that the box meets the mechanical performance requirements of the existing energy storage system, which provides a reference for the design of other liquid-cooled battery box.