2) A refined power battery pack model considering the internal structure of the power battery pack was established, and its effectiveness was verified through tests, laying
2) A refined power battery pack model considering the internal structure of the power battery pack was established, and its effectiveness was verified through tests, laying the foundation for modal and strength analysis of the body-in-white.
An accurate estimation of the state of health (SOH) of Li-ion batteries is critical for the efficient and safe operation of battery-powered systems. Traditional methods for SOH estimation, such as Coulomb counting, often
Researchers must conduct extensive finite element analysis (FEA) to select the right thickness of BPS components for a safe pack system. This process is tedious, and the
A battery pack structure model is imported into ANSYS for structural optimization under sharp acceleration, sharp turn and sharp deceleration turn conditions on the bumpy road.
By analyzing the modal characteristics and the harmonious response to vibration characteristics of the battery box, the dynamic performance of the battery box has been comprehensively...
The box structure of the power battery pack is an important issue to ensure the safe driving of new energy vehicles, which required relatively better vibration resistance, shock resistance, and durability. 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
This guide highlights robust and comprehensive testing solutions to unlock the potential of lithium-ion batteries and accelerate battery development. Download this guide to explore the best instruments for: Material testing, thermal analysis and internal structure evaluation; Organic and inorganic component analysis
Researchers must conduct extensive finite element analysis (FEA) to select the right thickness of BPS components for a safe pack system. This process is tedious, and the historical data from FEA needs to be fully utilized. This work proposes an inverse prediction method for the BPS design for enhanced reliability.
At first, this paper establishes the three-dimensional entity model and finite element model, and the stress state of battery box under extreme conditions of steep turning
The world is gradually adopting electric vehicles (EVs) instead of internal combustion (IC) engine vehicles that raise the scope of battery design, battery pack configuration, and cell chemistry. Rechargeable batteries are studied well in the present technological paradigm. The current investigation model simulates a Li-ion battery cell and a battery pack using
The topics of this research are as follows: We analyze the static and dynamic characteristics of the battery pack under different operating conditions through advanced 3D modeling and finite element analysis (FEA), and propose a series of structural optimization schemes aimed at achieving weight reduction while ensuring the strength and
By analyzing the modal characteristics and the harmonious response to vibration characteristics of the battery box, the dynamic performance of the battery box has been comprehensively...
The DC power supply voltage has a voltage reading accuracy ± (0.02% of reading+ 5mv), a current reading accuracy ± (0.3% of reading + 10mA). The whole device is equipped with 12 K-type
This 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
Based on the simulation, the battery pack structure is improved, and suitable materials are determined. Then the collision resistance of the optimized battery pack is verified, and the safety...
At first, this paper establishes the three-dimensional entity model and finite element model, and the stress state of battery box under extreme conditions of steep turning and braking on uneven road surface is calculated. At the last, the static strength analysis is carried out on the battery box.
This article focuses on the optimization design of liquid cooling plate structures for battery packs in flying cars, specifically addressing the high power heat generation during takeoff and landing phases, and compares the thermal performance of four different structures of liquid-cooled plate BTMS (Battery Thermal Management Systems). Firstly, this article established a
Therefore, this paper mainly explains the factors affecting the internal resistance of batteries from the aspects of battery structure design and raw material performance. Ⅰ. Influence of lithium-ion battery structure design . In the battery structure design, in addition to the riveting and welding of the battery structure itself, the number
3. Analysis and modeling of the battery pack structure The computational and optimization process of the analyzed battery structure could be seen in Fig. 1. Fig. 1. Computational and optimization process 3.1. Structural analysis The battery pack studied in this article is a lithium battery pack, which is located in the center of a car chassis
This paper uses the finite element model analysis method of the whole vehicle to verify the mechanical properties of the foamed aluminum material through experiments, and optimizes
Either way may trigger unwanted side reactions with an irreversible structural damage that degrade battery power and energy performance and reduce cycle life. Specifically, it was reported in 33, 34] that an extremely low voltage or over discharge can dissolve copper ions into electrolyte and form copper dendrites to penetrate the separator, causing an internal short
A battery pack structure model is imported into ANSYS for structural optimization under sharp acceleration, sharp turn and sharp deceleration turn conditions on the bumpy road.
This paper uses the finite element model analysis method of the whole vehicle to verify the mechanical properties of the foamed aluminum material through experiments, and optimizes the design of the weak links in the structure of the power battery pack box, which effectively reduces the maximum deformation of the battery pack box and the maximum...
Based on the simulation, the battery pack structure is improved, and suitable materials are determined. Then the collision resistance of the optimized battery pack is verified, and the safety...
This paper uses the finite element model analysis method of the whole vehicle to verify the mechanical properties of the foamed aluminum material through experiments, and optimizes the design of the weak links in the structure of the power battery pack box, which effectively reduces the maximum deformation of the battery pack box and the
This 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
The main benefit of such a method is the ability to analyze the internal structure of the battery as long as its state changes, by selecting multiple feature indicators, and analyzing the effective intervals of ultrasonic signals.
The topics of this research are as follows: We analyze the static and dynamic characteristics of the battery pack under different operating conditions through advanced 3D modeling and finite element analysis (FEA), and propose a series of structural optimization
At the last, the static strength analysis is carried out on the battery box. By analyzing the modal characteristics and the harmonious response to vibration characteristics of the battery box, the dynamic performance of the battery box has been comprehensively mastered.
Finally, based on the static and dynamic analysis results of the battery box, the weak points and unreasonable points are improved. The results show that the modified model has a good improvement effect and has basically reached the established design requirements, which verifies the rationality of the structural improvement scheme.
By analyzing the modal characteristics and the harmonious response to vibration characteristics of the battery box, the dynamic performance of the battery box has been comprehensively mastered. Finally, based on the static and dynamic analysis results of the battery box, the weak points and unreasonable points are improved.
The main structure of the battery pack box includes the upper-pressure cover, the upper-pressure rod, the lower box body of the battery pack, the inner frame, the lifting lug, the battery module, the single battery, and other structures.
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.
Figure 10 shows the distribution of the stress nephogram of the battery pack box during the collision. The maximum stress value of the box is 335.5 MPa, and the maximum stress value of the lifting lug closest to the collision rigid column is 413.4 MPa.
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