Lithium-ion battery pack composed of battery modules provide power for the electric vehicles. To ensure that lithium-ion batteries in battery modules are protected carefully, a battery holder was designed to provide support and protection for each lithium-ion battery. When the vehicles are at working, the battery pack will be affected by harsh environments, such as shocks due to road
A persistent challenge with the development of electric vertical take-off and landing vehicles (eVTOL) to meet flight power and energy demands is the mass of the load and thermal management systems for batteries. One possible strategy to overcome this problem is to employ optimization techniques to obtain a lightweight battery pack while satisfying structural
According to the geometric model of the battery-pack shell, the upper enclosure, bottom shell, upper bracket, and cross beam may be classified as thin-walled components, with their wall thickness much less than their length and width dimensions. Hence, the shell unit type is used for the shell of the battery-pack. Quadrilateral components are
Zheng7 adopted finite element analysis software to conduct lightweight design optimization of a specific brand''s new energy vehicle battery pack enclosure. It''s noteworthy that their...
multipurpose bracket can significantly reduce bracket consumption and vehicle weight. Electric vehicles, in particular, require dedicated space for battery packs, which occupy substantial
The safety and durability of battery brackets in electric vehicles (EVs) are of utmost importance to ensure the reliable performance and protection of battery packs. Impact testing plays a critical role in evaluating the structural integrity and crashworthiness of battery brackets subjected to various impact scenarios. This abstract presents an
In this section, topology optimization of a battery pack under thermal and mechanical loading is presented. A a 70% reduction, when the temperature constraint is increased from 70 ° C to 90 ° C for the L-bracket example. For the battery pack example, the stress is decreased from 136 MPa to 98 MPa, an 28% reduction, when the temperature
The main structural components include a bottom shell, an upper enclosure, lifting ears, connecting brackets, upper brackets, long brackets, short brackets, etc. The thickness parameters of some components were used as targets for the BPS design, while the rest were in the range of 1 to 3 mm thick, and the battery-pack enclosure was modeled via finite shell
2015). The battery pack enclosure (BPE) and other essen-tial components were organically combined with the battery modules to form the BPS. The BPE mainly consisted of an upper enclosure, a bottom shell, a crossbeam, connecting brackets, xed plates, upper brackets, long brackets, short brackets, lifting ears, and battery modules. Since the upper
Xu, S., Chen, H., Yang, Y.L., et al.: Dynamic analysis and structural optimization of battery pack box drop extrusion. Mech. Sci. Technol. 05, 1–3 (2022) Google Scholar Download references. Acknowledgements. Identity applicable sponsor (2021 Guangzhou Science and Technology Plan Project, Research on the sorting and damage mechanism of automobile
SIMULATION AND OPTIMIZATION OF A NEW ENERGY VEHICLE POWER BATTERY PACK STRUCTURE1 GuanqiangRuan,ChangqingYu,XingHu,JingHua SchoolofMechanicalEngineering,ShanghaiDianjiUniversity,Shanghai,China e
An electric vehicle (EV) is a vehicle that makes use of stored chemical energy in a battery pack, to power its electrical motors in order to propel the vehicle. When the batteries have been discharged they can be charged through a power outlet on the vehicle. The most common battery type for electric vehicles today is lithium-ion batteries.
Design, Optimization, and Analysis of Electric vehicle Battery Pack Rahul Patil1, Parth Punekar2, battery pack from research papers, and we can increase the cooling efficiency by combining paraffin wax with water. So I wrapped paraffin wax around the aluminum plate, and there were battery cells inside the aluminum plate. We will investigate heat transfer efficiency around the
analysis (FEA) of a battery bracket tailored for EVs. This bracket plays a pivotal role in securing the battery pack, ensuring structural integrity, and dampening vibrations and impacts during
The design and optimization of EV batteries present high complexity and multiple levels. From the perspective of system engineering, battery design and manufacturing processes on the performance and cost of lithium-ion battery packs (Nelson et al., 2018). Although these studies laid a solid foundation for the sustainable development of the battery industry,
Through the modeling and simulating of the battery pack of an electric car, the deformation and acceleration after loading are evaluated, which provides a reference for the optimal design of...
The results show that the maximum displacement of the battery lower tray bracket after topology optimization is 3.20 mm, which is slightly higher than before, but still relatively small. The maximum Mises equivalent stress rose to 240.7 MPa post-optimization, but brought about a uniform stress distribution at the bottom of the bracket. In
According to the requirement of “structural design and manufacturing feasibility” of the electric vehicle battery pack, the design of carbon fiber composite material instead of metal material
Lightweight construction stands as one of the most effective approaches for prolonging range and lowering costs. As a consequence, it is particularly imperative to
In this section, the numerical examples for the design of a battery pack module are presented. Such battery packs are commonly used in electric aircraft such as the NASA''s X-57 “Maxwell” aircraft . A schematic of the battery pack module is shown in Fig. 3. The battery modules are assumed to be stacked between adjacent ribs and spars
Through weight reduction and structural optimization, an innovative power battery pack design scheme is proposed, aiming to achieve a more efficient and lighter electric vehicle power system. The
The lightweight design of the battery pack bracket with good structural performance is not only to decrease its costs, but also can improve its fuel economy. This paper introduces topology optimization to this bracket design. In the early vehicle concept design stage, a new battery pack bracket was developed according to material distribution after topology optimization. The result
components—the upper cover, the lower box, and the battery pack bracket—and the pe- Symmetry 2024, 16, 1464 3 of 16 ripheral dimensions of the lower box are L × W × H: 1757 mm × 1420 mm ×
impact on the battery pack. The battery pack will experience tension and deformation as a result. Objectives To design and develop battery bracket which can meet the safety of battery pack. To reduce the probability of battery pack failure due to rear impact, front impact and side impact during collision.
As a consequence, it is particularly imperative to undertake lightweight design optimization for the battery bracket of new energy vehicles by applying 3D printing technology.
As a consequence, it is particularly imperative to undertake lightweight design optimization for the battery bracket of new energy vehicles by applying 3D printing technology. To actualize...
In this investigation, a systematic surrogate-based optimization design framework for a battery pack is presented. An air-cooling battery pack equipped on electric vehicles is first designed. Finite element analysis (FEA) results of the baseline design show that global maximum stresses under x-axis and y-axis transient acceleration shock condition are
Reconfigurability for large scale battery packs with minimum number of switches and scalable architecture are the unique properties of DESA . This topology is mainly developed for large scale battery packs where centralised control is a difficult task. Instead there are two levels of BMS to control the battery pack viz., local BMS and
Reliability optimization has always been an important topic in the application of lithium-ion batteries in electric vehicles. To optimize the redundancy and layout design of battery packs accurately and efficiently, a novel reliability optimization method based on a multiphysics coupling simulation and a response surface methodology is proposed.
DOI: 10.2514/6.2021-3068 Corpus ID: 238851219; Dynamic topology optimization of battery packs for eVTOL aircraft under time-dependent loading @article{Yan2021DynamicTO, title={Dynamic topology optimization of battery packs for eVTOL aircraft under time-dependent loading}, author={Jiayao Yan and Mark Sperry and David Kamensky and John T. Hwang},
Design optimization of battery pack enclosure for electric vehicle 333. 2.1 Table of parameter Parameter Variable of weight EW x 1 EB x 2 bb x 3 T x 4 bwl x 5 bww x 6 Theweightsofmaximumdeformation,minimummassand maximum natural frequency were set as k 1, k 2 and k 3 respec-tively. For the safety design of electric vehicle, the battery pack
Nowadays, what captures consumers'' primary attention is how to purchase electric vehicles with long range and desirable price. Lightweight construction stands as one of the most effective approaches for prolonging range and lowering costs. As a consequence, it is particularly imperative to undertake lightweight design optimization for the battery bracket of new energy
Design optimization problem for battery pack enclosure is formulated as follows: Objective: Minimize (D), Maximize (F) and Minimize (M). Design variables: EW, EB, bb, bwl, bww. Loads: Battery module weight of 220
requirements was successfully developed, allowing the saved space to be utilized for the auxiliary battery pack. Keywords: Multiple Purpose Bracket, Strength and Durability Analysis, Topology Optimization, Physical Testing 1. Introduction In heavy commercial vehicles, brackets play a crucial role in providing structural support and attaching
In the studies carried out by Zhang et al. 8, the structure of the battery pack has been optimized to mitigate the stress and deformation arisen from external forces on the high-voltage battery
5.2 Optimization of Battery Pack Bracket. Through the analysis, it can be seen that there is obvious strain energy at the battery pack bracket and the installation position of the battery pack on the body side, as shown in Fig. 10. Fig. 10. The strain energy of battery pack bracket and installation point. Full size image. Increase the thickness of the battery pack
This means a lightweight battery pack enclosure (BPE) design is desirable for maintaining a long range and good safety level, but a good crashworthiness performance also needs to be sustained. In this study, a novel procedure which enables a significant weight reduction of a battery-pack system is proposed. The approach is based on orthogonal
For the time being, light-weighting strategies for battery pack brackets predominantly involve the application of lightweight materials and the implementation of lightweight structural designs. Lightweight material applications for battery pack brackets include the utilization of aluminum alloy, high-strength steel, and composite materi-als.
Through weight reduction and structural optimization, an innovative power battery pack design scheme is proposed, aiming to achieve a more efficient and lighter electric vehicle power system.
Certainly, to strengthen the all-round performance of the battery pack system for new energy electric vehicles, further experiments are essential. These may include 3D printing of high-performance cooling water circuits for batteries, assessing the impact resistance of battery systems, and other relevant studies.
Despite the remarkable progress in battery technology, there are still many challenges in optimizing the structure design of battery packs to achieve lighter, safer, and more efficient systems. Lightweight design is particularly important because reducing the overall weight of a vehicle can significantly improve energy efficiency and endurance.
For simulating the load-bearing conditions of the battery tray bracket under bumpy road conditions, a surface load equivalent to 5 times the gravitational force of the battery was applied perpendicular to the bottom surface of the tray (Z-axis direction).
As revealed by the assembly results, the components of the battery pack bracket are tightly coordinated with each other, with no evident assembly conflicts, revealing that the dimensional accuracy and fit of the completed parts meet production requirements.
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