mechanical performance (consistency, strength, stiffness, stabiltiy etc.)
Explanation:
Du fait que les connecteurs électriques raccordant les premières électrodes du module les unes aux autres sont des blocs pleins, la cohérence mécanique du module est renforcée. Ceci est vrai également pour les secondes électrodes.
Searching for pouch cells with the keyword "mechanical" shows relevant scientific articles, mainly highlighting the mechanical performance. This term may coincide with the French " cohérence mécanique".
As described by Thomas et al. [5], multifunctional systems and materials correspond to all the structural configurations and materials that are capable of fulfilling more than one primary function simultaneously. In this perspective, the idea of manufacturing structural composite batteries capable of storing electric energy and, at the same time, carrying mechanical loads is one of the most appealing applications of multifunctionality.
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The embedded cell idea emerged from the necessity of optimizing the volume, more than the weight, of a composite structure by embedding electrical power elements without compromising their mechanical performance. The bonding process, anyway, does not result in a remarkable overall improvement due to the fact that the battery elements, as they are, are bearing no load, hence their mass is not contributing at all to the structural performance of the final product.
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First, the fact that carbon fibers, commonly used in high-performance composites for their high specific stiffness and strength, also exhibit remarkable electrochemical properties such as good electrical conductivity and high lithium-ion intercalation in the case of the graphite carbon allotrope.
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A commercial plasma-etch treatment followed by dip-coating in epoxy resin was applied to the cell surfaces to improve the bonding strength.
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In particular, not only the specific elastic modulus E¯mf, but also the specific shear modulus G¯mfwas considered for the estimation of the mechanical performance.
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Moved by the encouraging results obtained by Thomas et al. [5], Shalouf and co- workers [38] performed a comparative study of the mechanical performance of sandwich panels with embedded lithium-ion batteries.
https://www.mdpi.com/1420-3049/26/8/2203/htm
In addition to that, other requirements have to be fulfilled: mechanical stability and durability, sealing (e.g.high permeation barrier against humidity for lithium-ion technology.
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In the following, general requirements for packaging structures are compiled:
- high permeation barrier against liquid and vaporized electrolyte as well as against moisture, carbon dioxide and oxygen,
- high mechanical stability and durability,
https://aip.scitation.org/doi/pdf/10.1063/1.4878483
The mechanical performance of MESCs is assessed via quasi-static three-point bending tests, with results showing significantly improved mechanical stiffness and strength over traditional pouch cells.
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The final MESC configuration is dependent on the actual intended application because MESCs can be
tailored to meet specific mechanical (e.g., stiffness, strength) and electrical (e.g., gravimetric and/or volumetric energy densities) requirements
https://www.researchgate.net/publication/328031952_Multifunc...
The SABIC-developed battery pack concept leverages the properties and strengths of thermoplastics to improve performance, reduce costs and weight, and support mass production.
https://www.plastech.biz/en/news/SABIC-advances-thermoplasti...
Improved mechanical strength enables the cells to behave without any safety hazard during nail-penetration and thermal studies. 50
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Laser welding part fitment and laser operating conditions have a direct impact on the consistency, strength, and hermetic seal quality of welds achieved.
https://www.osti.gov/servlets/purl/1160224
| Johannes Gleim
Local time: 12:54
Specializes in field
Native speaker of: German
PRO pts in category: 56
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