2016 Toyota Prius
Toyota laid down targets for next-generation batteries and power semiconductors.
In the case of batteries, the Japanese carmaker would like to see a lot more energy dense cells - 600-800 Wh/l and 2-4 kW/l. That would be a few times more energy in the same size than current technology according to the graph, although power output will not be as important.
Another step could be metal-air batteries at over 1,000 Wh/l.
10% efficiency gains and significant volume reduction is expected from silicon power semiconductors.
"Improving electrified powertrains
- Developing next-generation models based on hybrid technologies, which encompass all of the component technologies necessary for the development of environment-friendly cars and which facilitate the use of different fuel combinations.
- Pushing for further advances related to electrified powertrains in order to develop next-generation models; promoting development of next-generation batteries, such as solid-state batteries that have higher energy density, easier increase in voltage and excellent high-temperature durability, in order to improve the range of EVs and the electric range of PHVs
- Promoting the downsizing and improvement of power control units in hybrids and PHVs, etc.; focusing development resources on the commercial application of silicon carbide power semiconductors (jointly developed with Denso Corporation and Toyota Central R&D Labs., Inc.) that can improve the fuel efficiency of hybrids by 10 percent."
Toyota: Development of next generation power semiconductor