How does the heat pump work in a Toyota Prius Prime plug-in hybrid?

By feedback@highgearmedia.com (Sean Szymkowski) The challenge of reducing the energy used by traditional heating systems in battery-electric and plug-in hybrid cars is one automakers still grapple with today. Reduced battery range in cold temperatures, combined with batteries working overtime to heat the cabin, can produce drastic declines in EPA-estimated range figures. The Toyota Prius …read more

Source:: http://www.greencarreports.com/news/1110627_how-does-the-heat-pump-work-in-a-toyota-prius-prime-plug-in-hybrid