Tesla and Daimler deal (Model S implications)

Pouch Cells ​

Pouch casings are typically used for Lithium Polymer cells with solid electrolytes, providing a low cost "flexible" (sometimes in unintended ways) construction. The the electrodes and the solid electrolyte are usually stacked in layers or laminations and enclosed in a foil envelope. The solid electrolyte permits safer, leak-proof cells. The foil construction allows very thin and light weight cell designs suitable for high power applications but because of the lack of rigidity of the casing the cells are prone to swelling as the cell temperature rises. Allowance must be made for the possibility of swelling when choosing cells to fit a particular cavity specified for the battery compartment. The cells are also vulnerable to external mechanical damage and battery pack designs should be designed to prevent such possibilities.​

The GS-Melcotec example illustrated uses spiral wound electrodes and a solid polymer electrolyte.​

This construction, using stacked electrodes is suitable for making odd shaped cells but few applications make use of this opportunity.​

Click to expand...

TEG said:

I don't think those cells will require the same liquid cooling like the Roadster's laptop batteries. This might be helpful if they wanted to develop a pack that could be swapped at a Better Place swap station.

Click to expand...

That was classic, VFX.

Click to expand...