Vehicle Propulsion Systems: Introduction to Modeling and Optimization

This is by far the best book on the topic I have found. If you plan to design or model any vehicle, but in particular a hybrid or electric vehicle, I recommend you own this book. Specifically, a large portion of the mathematical models required for design-level calculations are available directly from the text. The text is very concise, making good use of external citations to remain thorough. Finally, the optimization case studies are very helpful in understanding hybrid design goals. Highly Recommended for engineers and students with some experience in vehicles.