Modularization of multifunctional energy storage composites (MESC)
Abstract/Contents
- Abstract
- Electric vehicles are growing in popularity thanks in large part to the cheapening of Li-ion batteries, but the energy density of batteries still pales in comparison to their gasoline counterpart. Furthermore, the levels of protection required to integrate these volatile batteries into safe transports of human life further reduce the energy efficiency on the system level. In the worst case, these structural safety containers for the battery pack have shown to take up nearly 50\% of the entire system weight. Thus, it is just as important to \textit{optimize the integration of the batteries} as it is to improve the cell level chemistry safety and energy density. In this investigation, an innovative method was proposed based on the previously developed Multifunctional Energy Storage Composites (MESC) technique to create structural batteries using pouch cells to simultaneously reduce weight, improve reliability, and increase yield of scaling from cell to module. The proposed method involves reinforcing battery cells using the through thickness reinforcing rivets to integrate the live pouch cell into the structure. If a live pouch cell can be created with pre-existing holes, the through thickness reinforcing rivets can be added after individual cell quality control, resulting in a much higher yield process in scaling from cell to module. After the methodology of adding holes to pouch cells is thoroughly investigated and proven, several MESC pouch cells (MESC-p) were fabricated and characterized by a series of electrical and mechanical tests to prove the viability as an efficient structural battery integration scheme. The design envelope was explored through parametric studies, suggesting the pathway towards optimal pack design. A case study of a prototype design for an electric automotive is discussed and fabricated at a 1/90 scale. A theoretical design to replace the chassis of a 2018 Nissan Leaf is presented to showcase the potential for 40\% range improvement when using MESC-p.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2022; ©2022 |
| Publication date | 2022; 2022 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Bombik, Anthony James |
|---|---|
| Degree supervisor | Chang, Fu-Kuo |
| Thesis advisor | Chang, Fu-Kuo |
| Thesis advisor | Arya, Manan |
| Thesis advisor | Sakovsky, Maria |
| Degree committee member | Arya, Manan |
| Degree committee member | Sakovsky, Maria |
| Associated with | Stanford University, Department of Aeronautics and Astronautics |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Anthony Bombik. |
|---|---|
| Note | Submitted to the Department of Aeronautics and Astronautics. |
| Thesis | Thesis Ph.D. Stanford University 2022. |
| Location | https://purl.stanford.edu/jj846xs0597 |
Access conditions
- Copyright
- © 2022 by Anthony James Bombik
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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