High-power cells

D placement tool has to generate solutions with a relatively even thermal map and low peak temperature. There has been a large body of work (e.g., [16,17]) proposed to solve the problem. For analytical based placers, the requirement for an even thermal can be formulated as a set of equations as constraints. On the other hand, under the context of partitioned based placement, a high power cell can be bloated to a certain extent so that it can be allocated with a larger white space and thus lower power density. 

An electrolyte can be too thick as well. Again, thicker electrolytes are linearly more resistive, so for high-power cells the electrolyte resistance can lead to significant heating of a cell. In older lithium ion cells, this can trigger thermal runaway. Thus, an electrolyte should... 

Very high power cells for power assist HEV are available. Li-ion batteries can be optimized for high power or high energy. 

FIGURE 20.8 High-power reserve battery BA-6511 /SLQ. (a) Li /SOCl reserve battery, (b) High-power cells, (c) High-power cell case and electrode assembly. Courtesy of Alliant Techsystems, Inc.)... 

Reverse roll coating can produce very thin coatings ( 40 microns) useful in high-power cells. After reverse roll coating, the coated electrode is dried to remove solvent, and then calendared to increase density. The properties of the coating largely determine the behavior of the battery. 

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