Study on Impact Resistance of Sandwich-Structured Battery Protection Panels Harbin Institute of Technology

Format:

Book

Conference/Event

Author/Creator:

Zhang, Guanghao, author.

Zhang, Mingming, author.

Luo, Changjie, author.

Zhou, Jun, author.

Zhang, Fengqiang, author.

Yu, Wenze, author.

Li, Jiongfeng, author.

Guo, Qingrong, author.

Conference Name:

2025 2nd International Conference on Sustainable Development and Energy Resources (SDER 2025) (2025-08-01 : Shenzhen, China)

Language:

English

Subjects (All):

Battery packs.

Materials properties.

Steel.

Batteries.

Lightweighting.

Local Subjects:

Battery packs.

Materials properties.

Steel.

Batteries.

Lightweighting.

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2026

Summary:

With new energy vehicles developing rapidly, battery safety, as an important part of the impact on the range of new energy vehicles and vehicle safety, has become the focus of attention. The battery pack protection plate is a core component to protect the battery, its performance needs not only impact resistance, but also lightweight, honeycomb sandwich structure with its excellent energy absorption characteristics and weight reduction performance by the battery pack protection plate performance research. At present, the core-to-face sheet interaction in conventional sandwich structures subjected to impact loads has not been fully elucidated, and the quantitative characterization of damage is insufficient, so this paper aims to optimize the lightweight impact-resistant structure by exploring the synergistic energy dissipation mechanism between the high-strength core material and the steel plate. The study combines theory and simulation, adopting ideal rigid-plastic film theory to establish a critical response model to predict the structural failure threshold, equivalent single-layer theory to simplify the analysis of plywood, and a stiffness matrix model to quantify the structural mechanical contribution of each layer. A two-material synergistic design framework is proposed by fully considering the material properties and adopting the corresponding intrinsic structure and failure criteria for different materials. Analysis reveals that geometric confinement is a key characteristic of the honeycomb sandwich panel's response and a strain gradient driving mechanism at low impact resistance, and a new energy distribution paradigm is found through the analysis of the energy absorption ratio. The theoretical and simulation results are in great agreement with each other, which just has a difference of 0.7% in the peak force, 1.4% in the critical displacement error, and less than 2% in the impulse integration error. The proposed dual-material co-design framework provides a solution for electric vehicle battery protection systems that balances lightweight and impact resistance

Notes:

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