Does anyone have specific information or helpful website links on how the ZOE manages heat to prevent damage to the battery and range degradation?
The Chevrolet Volt / Opel Ampera as well as the Fisker Karma feature an active cooling management system whereby cooling plates are integrated throughout the battery. This prevents the battery from ever reaching temperatures which will harm battery capacity. The Volt / Ampera system will cool the battery even when the car is off!
The Nissan Leaf does not offer heat management, and as a result some Leaf owners in hotter climates (such as Arizona) have experienced alarmingly fast range degradation.