This paper aims at developing a reliability-based design optimization (RBDO) method to solve the CFRP battery box lightweight design problem considering both meso- and macro-scopic parameters. The method has three kernel parts: the uncertainty quantification and propagation part, the finite element analysis part and the optimization part.
The results show that under the two combined conditions, the maximum stress of the battery box is less than the specified stress of the composite material, and the failure factor is much less than 1, meeting the strength requirements of the battery box. M. Hartmann (2013).
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.
When the car is impacted by external force and the excitation impact caused by the uneven road, the battery pack box shell is required to protect the battery module from an external force, so that the single cell is not squeezed, resulting in electrolyte leakage, or battery short circuit, thermal runaway, and other problems.
Li et al. analyzed the connection between aluminum and high-strength steel, expounded on the current status of the connection technology of new energy vehicle battery pack boxes, and put forward the point of view that the connection-related issues such as matrix damage, interface failure, and long welding cycle need to be further studied .
The power battery pack box is the core component of the BEV. The power battery pack provides energy for the whole vehicle, and the battery module is protected by the outer casing. The battery pack is generally fixed at the bottom of the car, below the passenger compartment, by means of bolt connections.
This paper aims at developing a reliability-based design optimization (RBDO) method to solve the CFRP battery box lightweight design problem considering both meso- and macro-scopic parameters. The method has three kernel parts: the uncertainty quantification and propagation part, the finite element analysis part and the optimization part.
The results show that the sheet molding compound (SMC, a kind of glass fiber composite) power battery pack shall be damaged when the loaded extrusion force is increased to 98.2 kN; for …
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 …
Xu S et al. improved the strength of the battery pack box by optimizing the multi-scale dimensions of the battery bubble box through drop tests and other methods [11].
The purpose of the research is to improve the protection level of the battery pack to IP68, to optimize the sheet metal power battery box structure into a more lightweight frame structure, to...
The battery packs are crucial components of electric vehicles and may severely affect the continue voyage course and vehicle safety. Therefore, design optimization of the battery-pack enclosure (BPE) is critical …
The results show that the sheet molding compound (SMC, a kind of glass fiber composite) power battery pack shall be damaged when the loaded extrusion force is increased to 98.2 kN; for the metal power battery pack, a force of 81 kN would make the deformation more than 30%; while for the carbon fiber composite one, it can stand the extrusion ...
As an important device to protect batteries in electric vehicles, the dynamic and static performance of the battery box is closely related to the safety of the whole vehicle.
Finally, the stress and failure factor of the composite battery box under the sudden braking and sharp turn of the bumpy road were analyzed, and the strength of the battery box was checked. The ...
Based on simulation results, the strength of battery packs made of three materials are compared under the same standard operating conditions, and the optimal option for lightweight power battery packs is thereafter obtained.
I used a combination of 4 ounce and six ounce weight fiberglass for the shell. Two layers of 6 ounce and two layers of 4 ounce. This gave the shell strength but still remains light. I had heaps of off-cut fiberglass material left over for a board I built which I cut it into strips.
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 ...
Analysis of steel power battery box. (a) Effective plastic strain, (b) Effective stress. 3.4 Comparison of structural design results of power battery box of different materials Table 4 tabulates figures of merit for power battery boxes made of various materials, as analysed above. The simulations reveal that the CFRP power battery box has the ...
Based on this, the ANSYS software''s topology optimization tool was utilized to successfully reduce the weight of the box by 6.8%. Following finite element analysis, the …
The purpose of the research is to improve the protection level of the battery pack to IP68, to optimize the sheet metal power battery box structure into a more lightweight frame structure, to...
In this paper, the lightweight design and static strength analysis of electric vehicle battery box were replaced by composite materials instead of traditional metal materials. Firstly, the finite element model of the battery box was established by using ABAQUS. The battery box was geometrically cleaned, the composite material of the box ...
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 Kg acting vertically downwards. Constraints: R. where, D, F and M is the maximum deformation, minimum natural frequency and mass, respectively.
The strength for loading the battery is satisfied by the finite element analysis, but the heavy of each box is 41.2kg, so the box''s weight should be reduced for improving the battery efficiency. Therefore,
The NOCO HM 426 Dual GC2 Battery Box is a commercial grade battery box built for dual 6V batteries. It can be used for marine, automotive, and RVs. This marine battery box has also been certified to meet the standards and specifications of the US Coast Guard and American Boat and Yacht Council.
Some RV battery boxes have been strength and shatter tested in a variety of temperatures. These are the best options if you live or travel to areas that have extreme climates. The same is true for UV protection – strong sunshine can weaken and fade your battery box, reducing the level of protection for your battery. If you spend a lot of time in desert states, you …
Xu S et al. improved the strength of the battery pack box by optimizing the multi-scale dimensions of the battery bubble box through drop tests and other methods .
In this paper, the lightweight design and static strength analysis of electric vehicle battery box were replaced by composite materials instead of traditional metal …
This paper aims at developing a reliability-based design optimization (RBDO) method to solve the CFRP battery box lightweight design problem considering both meso- and …
Xu S et al. improved the strength of the battery pack box by optimizing the multi-scale dimensions of the battery bubble box through drop tests and other methods .
The power battery pack is mainly composed of a shell, battery module components, electrical components, battery management system (BMS), battery system distribution box (BDU), lifting lug, inner frame and connecting …
Finally, through modal analysis, we extracted the first six modes of the power battery box, with the first mode frequency being 33.69 Hz. This suggests that the battery pack may experience resonance during actual operation. Based on the static and modal analysis results, we proposed a structural optimization and lightweight design solution for ...
Stay updated with the latest news and trends in solar energy and storage. Explore our insightful articles to learn more about how solar technology is transforming the world.