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 experimental design (OED), response surface methodology (RSM), and a multi-island genetic algorithm.
Customer ServiceAs the "heart" of new energy vehicles, the power package is the primary power source of the vehicle and one of the key assemblies of electric vehicles; it plays a decisive role in the vehicle''s
Customer ServiceChassis layout of new energy vehicle hub electric models [2]. The battery is integrated into the chassis of the new energy-pure electric car, which has a higher percentage of unsprung mass, a
Customer ServiceBased on the crash test of new energy vehicles, the mechanical response data of power batteries during the collision process were collected, and the average impact strength curve of power
Customer Service2.1. New energy vehicle battery safety issues As the primary source of power for new energy vehicles, more and more individuals are choosing to forego the usage of fuel-powered automobiles today
Customer ServiceBased on the crash test of new energy vehicles, the mechanical response data of power batteries during the collision process were collected, and the average impact strength curve of power batteries of typical new energy vehicles in China was obtained. The average impact strength curve was mathematically processed to obtain the impact strength
Customer ServiceBattery modules of new energy vehicles are frequently exposed to dynamic impacts during traffic accidents. However, current research on the mechanical safety of prismatic lithium-ion batteries (PLIBs) primarily focuses on quasi-static states, and the failure mechanism of batteries under dynamic impact remains incompletely understood. Therefore
Customer ServiceThe strength, rigidity, heat dissipation and waterproof of the battery pack body should meet high design requirements (Feng and Hu, 2020). When an electric vehicle crashes, slips out of
Customer ServiceThe average impact strength curve was mathematically processed to obtain the impact strength characteristic value and tolerance by using the equivalent trapezoidal wave and the least
Customer ServiceExperiments show that impact energy primarily drives battery failure, with impact velocity also influencing outcomes. Notably, the battery demonstrates mitigated electrical failure within a
Customer ServiceBattery modules of new energy vehicles are frequently exposed to dynamic impacts during traffic accidents. However, current research on the mechanical safety of prismatic lithium-ion batteries (PLIBs) primarily focuses
Customer ServiceBased on the crash test of new energy vehicles, the mechanical response data of power batteries during the collision process were collected, and the average impact strength curve of power batteries of typical new energy vehicles in China was obtained.
Customer ServiceThe average impact strength curve was mathematically processed to obtain the impact strength characteristic value and tolerance by using the equivalent trapezoidal wave and the least square method, thereby determining the test conditions of the dynamic strength of the domestic new energy vehicle power battery. The differences are analyzed by
Customer ServiceThrough finite element analysis and simulation, it is possible to comprehensively understand the dynamic response and force situation of battery packs in collisions, evaluate their strength and stability, optimize the structural design of electric vehicles, and improve their safety performance in collisions.
Customer ServiceThis paper takes a BEV as the target model and optimizes the lightweight design of the battery pack box and surrounding structural parts to achieve the goal of
Customer ServiceThis paper takes a BEV as the target model and optimizes the lightweight design of the battery pack box and surrounding structural parts to achieve the goal of improving vehicle crash safety and lightweight, providing participation in the application of new materials in new energy vehicles.
Customer ServiceNUE leads the development and distribution of proprietary, state-of-the-art, ruggedized mobile solar+battery generator systems and industrial lithium batteries that adapt to a diverse set of the most demanding commercial and industrial applications, delivering clean, renewable power wherever it is needed.
Customer ServiceIn order to obtain the answer, this article takes the power battery pack used in new energy vehicles as the research object. By arranging acceleration sensors at different points on the battery pack shell, fixture, and battery module, and using the method of simulating collision tests to simulate electric vehicle collision accidents, the
Customer ServiceStrength analysis of the lower battery tray bracket for a electric vehicle Methods of analysis. For the convenience of analysis, the designed lower bracket model was scaled down by a factor of 0.2.
Customer ServiceThrough finite element analysis and simulation, it is possible to comprehensively understand the dynamic response and force situation of battery packs in collisions, evaluate
Customer ServiceThen the collision resistance of the optimized battery pack is verified, and the safety level is greatly improved. While ensuring the safety and reliability of the battery pack structure, it also reduces the weight to satisfy the lightweight design and complies with relevant technical standards. Keywords:static, dynamic, modal, lightweight, optimization 1. Introduction The
Customer ServiceNEV''s battery as the core components play an essential role in the cruising range and manufacturing cost in terms of energy, specific power, new materials, and battery safety. In order to know
Customer ServicePDF | With the rate of adoption of new energy vehicles, the manufacturing industry of power batteries is swiftly entering a rapid development... | Find, read and cite all the research you need on
Customer ServiceThe strength, rigidity, heat dissipation and waterproof of the battery pack body should meet high design requirements (Feng and Hu, 2020). When an electric vehicle crashes, slips out of control...
Customer ServiceIn order to obtain the answer, this article takes the power battery pack used in new energy vehicles as the research object. By arranging acceleration sensors at different points on the
Customer ServiceThis study takes a new energy vehicle as the research object, establishing a three-dimensional model of the battery box based on CATIA software, importing it into ANSYS finite element software, defines its material properties, conducts grid division, and sets boundary conditions, and then conducts static and modal analysis to obtain the stress and deformation
Customer Servicesafety and lightweight, providing participation in the application of new materials in new energy vehicles. 2 Structural Analysis of New Energy Vehicles 2.1 Basic Structure of BEV New energy vehicles mainly include hybrid electric vehicles (HEV), battery electric vehicles (BEV), and fuel cell electric vehicles (FCEV). Hybrid power has at least two
Customer ServiceExperiments show that impact energy primarily drives battery failure, with impact velocity also influencing outcomes. Notably, the battery demonstrates mitigated electrical failure within a specific impact energy range, which is lower than the threshold for failure characterized by a sudden voltage drop due to major fractures. The self
Customer ServiceDuring the period of 40 ms-60 ms, the maximum stress values of all lifting ears exceeded a certain limit and significant plastic deformation occurred. This means that in the case of bottom collision impact, the lifting ears of the battery pack will experience huge stress, and there is a high possibility of fracture failure.
The first approach is to improve the energy density of every single battery cell. The second approach is to reduce the weight of the battery pack enclosure (BPE) Today, it is very challenging to improve the energy density of battery cells due to the high energy densities already achieved as well as safety-related problems.
The load corresponding to these points is the destructive force of the PLIB, and it can be seen that the destructive force when the battery fails under dynamic loading conditions is lower than that under low-velocity conditions, which is consistent with the results of the 18650 batteries in reference .
6.4. Impact protection strategy In order to evaluate the protective effect of the bottom structure of the battery box, the protective effect (PE) can be calculated by comparing the reduction of the maximum axial compression of the battery under the protective structure with the ratio under the condition of a homogeneous plate.
In the analysis of the vehicle side impact test, the rigid column invades the electric vehicle, which deforms the sill beam and the side of the battery pack box. Figure 10 shows the distribution of the stress nephogram of the battery pack box during the collision.
By analyzing the simulation results, the deformation, stress, and strain distribution at the bottom of the battery pack under ball impact were obtained, as well as the related variation patterns. It was observed that the battery pack underwent significant deformation under impact load, and stress concentration also occurred in certain areas.
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