锻压技术

电池包纵梁辊冲成形仿真分析与实验验证

英文标题：Simulation analysis and experiment verification on chain-die forming for longitudinal beams of battery pack

作者：陈文跃1 邹天下1 李大永1 彭颖红1 肖华2 3 石磊2 3 朱明4 王全伟4

单位：1.上海交通大学机械系统与振动国家重点实验室 2. 宝山钢铁股份有限公司研究院 3. 汽车用钢开发与应用技术国家重点实验室(宝钢) 4. 山东新合源热传输科技有限公司

分类号：TG335

出版年,卷(期):页码：2024,49(4):48-53

摘要：

提出某QP1180超高强钢制的电池包纵梁辊冲成形方案，以解决该超高强钢梁类零件台阶结构特征的成形问题。为了成形此类具有典型变高度特征的电池包纵梁，考虑到辊冲成形独特的运动方式，避免在零件成形过程中出现模具与板料碰撞的缺陷，提出了具有新型结构的辊冲模具，通过数值仿真的方法，对零件在辊冲成形过程中的应力分布情况以及机架的工作载荷进行了分析，判断了工艺方案的可行性；进而基于仿真结果对模具进行优化迭代，确定了最终模具的补偿参数，将仿真结果的角度偏差控制在±1°以内；最后，开展辊冲成形的实验与试样制备，试制零件的尺寸偏差在±1 mm以内。

A chain-die forming scheme for the longitudinal beam of battery pack made of QP1180 ultra-high strength steel was proposed to solve the forming problem of ultra-high strength steel beam parts with step structure characteristics. In order to form this kind of longitudinal beam for battery pack with typical variable height characteristics, a new structure of chain-die forming die was proposed, considering the unique motion mode of chain-die forming and avoiding the defects of collision between die and sheet during the forming process of part. Then, through numerical simulation method, the stress distribution condition of part and the working load of frame in the chain-die forming process were analyzed to determine the feasibility of the process scheme. The optimization iteration of die was carried out to determine the compensation parameters of the final die based on the simulation results to control the angular deviation of the simulation results within ±1°. Finally, experiments and specimen preparation for chain-die forming were carried out, and the dimensional deviation of the trial parts was within ±1 mm.

基金项目：

国家自然科学基金资助项目（U1860110）

作者简介：陈文跃（1998-），男，硕士研究生 E-mail：Samuel1165694560@sjtu.edu.cn 通信作者：李大永（1973-），男，博士，教授 E-mail：dyli@sjtu.edu.cn

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