The prospect of chassis structure design for new energy battery
The chassis structural design of new energy cars is more adaptable and affects vehicle performance compared to fuel-powered vehicles. The integrated battery and high amount of unsprung mass affect the center of gravity and stability of the new energy vehicle. The coordination and collaboration between the power battery module and the chassis
A review on structure model and energy system design of lithium
The review shows that nano and graphene models, with their corresponding energy systems, significantly improve the performance of lithium batteries, thus supporting
Analysis of Factors Influencing the Bottom Impact Safety
data support for the design of reasonable bottom impact resistance performance goals for new energy vehicle traction battery systems. Schematic diagram of the power battery system structure for new energy vehicles Materials commonly used in traction battery systems include steel and aluminum
Simulation Analysis of Battery Pack Bottom Ball Strike Based
The structure at the bottom of the battery pack typically consists of a shell, insulation material, battery module, support structure, and so on. The response of different battery pack bottom structures to ball strikes can vary. In China, the commonly used conditions for the bottom ball impact test of battery packs are set as follows,
Optimized Design Solutions for Battery and Frame Performance
In the structural design of new energy bus bodies, material selection is crucial. A comparison of various materials revealed their cost-effectiveness in achieving lightweight designs, reducing
Structural Optimization for New Energy Vehicle Batteries
The four primary components of the battery package''s mechanical structure design process are parameter determination, structural initial design, optimization of simulation
Design and uncertainty-based multidisciplinary optimization of a
The design variables for the bottom impact and heat dissipation models of the 3D star-shaped NPR structural battery pack include three key aspects: (1) the NPR inner core''s unit cell structure parameters; (2) the condenser shell thickness; (3) the cooling water flow rate.
Analysis of Factors Influencing the Bottom Impact Safety
The study analyzed the bottom impact safety performance of traction battery systems under different damage factors, offering crucial reference and data support for the design of
Optimization of module structure considering mechanical and
Therefore, an efficient and safe module structure design that maximizes the energy density of a module while preventing various failures that can actually occur in battery
Optimization and Structural Analysis of Automotive Battery
the battery pack. 2. Lightweight Design of Automotive Battery Packs Based on ANSYS 2.1. Battery Pack Symmetry Design Before the design of the battery pack in this study, the layout of the square
Battery Pack and Underbody: Integration in the
The integration of the battery pack''s housing structure and the vehicle floor leads to a sort of sandwich structure that could have beneficial effects on the body''s stiffness (both torsional
High-entropy battery materials: Revolutionizing energy storage
The significance of high–entropy effects soon extended to ceramics. In 2015, Rost et al. [21], introduced a new family of ceramic materials called "entropy–stabilized oxides," later known as "high–entropy oxides (HEOs)".They demonstrated a stable five–component oxide formulation (equimolar: MgO, CoO, NiO, CuO, and ZnO) with a single-phase crystal structure.
Air Cooling Structure of Battery Pack for New Energy Vehicles
Air Cooling Structure of Battery Pack for New Energy Vehicles . JiaHua Wu . Department of Power Engineering, School of energy power and mechanical engineering, Baoding, Hebei, and an exhaust port design is provided on the side of the bottom end of the protective frame, which solves the problem that the
(PDF) Impact Response of a Double-Bottom Structure
bottom structure of the power-battery cabin of a new energy ship. The investigation analy- ses the experimental and numerical results, examining the structural force–displacement
Simulation Analysis of Battery Pack Bottom Ball Strike Based
The installed capacity of power batteries in new energy vehicles is increasing rapidly with the advancement of technology [1, 2].During usage, collisions at the bottom and other factors can potentially impact the structure of the battery pack, particularly leading to internal damage that may be difficult to detect [3, 4].For instance, a collision with an electric vehicle in
Research on Lightweight Structure of New Energy
An optimal battery packing design can maintain the battery cell temperature at the most favorable range, i.e., 25–40 °C, with a temperature difference in each battery cell of 5 °C at the
A new design of cooling plate for liquid-cooled battery thermal
Air cooling, due to its low cost and simple structure, has been extensively used in small-scale battery packs [10]. However, as the energy density of battery packs increases, the cooling efficiency of air cooling is insufficient to meet the heat dissipation requirements [11].
Structural Design and Analysis of Battery Cell
This article aims to address the issues currently faced by domestic battery cell winding machines, including small size, low production efficiency, poor winding accuracy, and low product yield.
New energy battery bottom structure
To address the protective problem of the bottom power battery of electric vehicles when it is impacted by road debris, two new types of sandwich structures with an
Simulation Analysis of Battery Pack Bottom Ball Strike Based
Simulation analysis of the structural mechanics of battery packs has emerged as an important tool for evaluating the stability and safety of bottom design [9–11]. Figure 1 illustrates how
Design and Experimental Research on Composite Bottom Guard
Safety concerns surrounding new energy vehicles have gained increasing national and social attention. Bottom impacts to power batteries are a leading cause of fires and explosions in new energy vehicles. Focusing on the safety of power battery bottom impacts, this article first proposes applying honeycomb panels to the battery''s bottom guard plate.
Topology optimization design and thermofluid performance
Cooling plate design is one of the key issues for the heat dissipation of lithium battery packs in electric vehicles by liquid cooling technology. To minimize both the volumetrically average temperature of the battery pack and the energy dissipation of the cooling system, a bi-objective topology optimization model is constructed, and so five cooling plates with different
Enabling New EV Battery Chemistries Through Battery Pack Structure
The volumetric energy density of NMC 811 cells is around 60% higher than LFP cells, however, the cost is around 20% more (per kWh). If it is assumed that the cells make up 30% of a battery pack''s volume (typical for earlier EV models), then for a 60kWh NMC 811 battery, it would take up around 300L.
A new bottom and radial coupled heat dissipation model for battery
By designing a new thermal column structure, the conventional bottom cooling of the batteries can be further improved with the side cooling, and the new coupled cooling model effectively solves the problem of excessive temperature difference in the traditional bottom cooling mode when the battery is discharged at high rates.
Structural Analysis of Battery Pack Box for New Energy Vehicles
2. STRUCTURAL MODELING OF POWER BATTERY PACK FOR NEW ENERGY VEHICLES . 2.1 Analysis of battery structure and working principle . Power batteries are the main power source of electric vehicles. At present, most of the new energy vehicles adopt lithium-ion batteries as power batteries, with some advantages in terms of high energy
Battery Pack and Underbody: Integration in
The vehicle battery system is a quite complex assembly as it comprises the energy storage medium, i.e., the battery cells, the structural enclosures, the temperature
Analysis of Factors Influencing the Bottom Impact Safety
The study analyzed the bottom impact safety performance of traction battery systems under different damage factors, offering crucial reference and data support for the design of reasonable bottom impact resistance performance goals for new energy vehicle traction battery systems.
Optimization and Structural Analysis of Automotive Battery Packs
Based on the static and modal analysis results, we proposed a structural optimization and lightweight design solution for a certain electric vehicle battery pack and
Structural Optimization for New Energy Vehicle Batteries
As the "heart" of new energy vehicles, the power package is the primary power source of the car and one of the key assemblies of electric vehicles; it plays a decisive role in the vehicle''s performance, and the battery pack''s performance is affected by parameters like the number of cells, energy density, and the box.
Structural Analysis of Battery Pack Box for New Energy Vehicles
Its structural safety is closely related to the life safety and property safety of drivers and passengers, which is an important index to the structural safety of new energy vehicles. In this work, the structure of the new energy vehicle is optimized by a finite element model, and the side crashworthiness applied to the electric vehicle is
Optimization Study of Fire Prevention Structure of
To address the protective problem of the bottom power battery of electric vehicles when it is impacted by road debris, two new types of sandwich structures with an enhanced regular hexagonal structure and semicircular
Analysis of Factors Influencing the Bottom Impact Safety
Yan, P, Ma, T, Wang, F & Gao, Y 2025, Analysis of Factors Influencing the Bottom Impact Safety Performance of Power Battery Systems.在 Z Wang, K Zhang, K Feng, Y Xu & W Yang (编辑), Proceedings of the TEPEN International Workshop on Fault Diagnostic and Prognostic - TEPEN2024-IWFDP. Mechanisms and Machine Science, 卷 141 MMS, Springer Science and
Data simulation of the impact of ball strikes on the bottom of
From Table 5, it can be seen that in the impact protection at the bottom of the battery box, the circular core structure, BRAS sandwich structure, and scale multi-level structure exhibit better energy absorption effect compared to conventional homogeneous aluminum plates, which can reduce the maximum axial compression of the battery and provide good protection
Structural battery composites with remarkable energy storage
In addition to increasing the energy density of the current batteries as much as possible by exploring novel electrode and electrolyte materials, an alternative approach to increase the miles per charge of EVs is developing "structural battery composite" (SBC), which can be employed as both an energy-storing battery and structural component
Aluminium 4680 Cell Can Structural
Recent industrial and academic studies have shown that aluminium cell housings can provide several benefits in terms of thermal management and gravimetric energy
BYD Blade
CATL Qilin CTP Design. The CATL Qilin CTP 3.0 is their second generation cell to pack design. Qilin is named after a legendary creature from China. The latest CATL post
New energy battery bottom plate structure diagram
Structure optimization of liquid-cooled plate for electric vehicle lithium-ion power batteries 1. Introduction Due to the shortage of fossil energy, governments of various countries are committed to finding new alternative energy sources to solve the energy problem [[1], [2], [3], [4]].Electric vehicles have begun to
Optimization and Structural Analysis of Automotive Battery
The development of new energy vehicles, particularly electric vehicles, is robust, with the power battery pack being a core component of the battery system, playing a vital role in the vehicle''s range and safety. This study takes the battery pack of an electric vehicle as a subject, employing advanced three-dimensional modeling technology to conduct static and
6 FAQs about [New energy battery bottom structure design]
Why is structure design important for a battery pack?
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.
What is the structure at the bottom of a battery pack?
The structure at the bottom of the battery pack typically consists of a shell, insulation material, battery module, support structure, and so on. The response of different battery pack bottom structures to ball strikes can vary. In China, the commonly used conditions for the bottom ball impact test of battery packs are set as follows,
Why is simulation analysis important in battery design?
Simulation analysis of the structural mechanics of battery packs has emerged as an important tool for evaluating the stability and safety of bottom design [9–11]. Figure 1 illustrates how simulation analysis eliminates adverse factors, determines impact effects, and offers optimal design solutions to address potential issues.
Does impact on the bottom affect battery pack performance?
In the analysis of mechanical safety for battery packs, the impact on the bottom has a significant effect on pack performance, especially in the stress concentration area near the point of impact [12, 13]. The deformation of the pack mainly occurs in the horizontal or vertical direction.
What is a battery module structure?
Module structure and optimization descriptions The module structure surrounding battery cells should be optimized to maximize cell volume or weight while satisfying mechanical and thermal safety constraints. This section presents the basic module structure used in this study and summarizes the optimization process.
How does impact angle affect the safety performance of a battery pack?
Furthermore, the impact angle also influences the safety performance of the battery pack. Therefore, conducting a simulation analysis using the bottom ball strike method is crucial for studying the factors and weights that influence the mechanical safety performance of the battery pack’s bottom [16–18].