Is a Modular Generator in Electric Vehicles Viable?
Back in the era of 80 to 100 miles of electric vehicle (EV) range about a decade ago, the concept of designing a modular generator that could be easily installed in a battery-electric vehicle (BEV) trunk seemed promising. The idea was that such a system could temporarily convert the car into a hybrid, extending its range by charging the battery. However, as of today, the necessity for this type of system is questionable.
Most modern BEVs can travel between 250 and 300 miles on a single charge. At a speed of 60 miles per hour, this equates to a range of 4 to 5 hours before needing a recharge. Have you ever driven for such a long stretch without a break? It’s not pleasant, and it can even cause health issues like dehydration. On a typical road trip, you are likely to stop every 2 to 3 hours, and each stop provides a chance to walk around, stretch, get food, and take a bathroom break.
Why Modifying the Car Isn’t Worth It
Attempting to modify a BEV to include a modular generator presents several challenges. Installing and maintaining such a system would add complexity and cost, dealing with the intricacies of incorporating a gasoline engine into an electric vehicle. This could pose safety concerns, such as possible carbon monoxide leakage into the vehicle. Additionally, the noise level and general inconveniences of a gas-powered generator would make the driving experience more unpleasant.
Furthermore, modern EVs are designed with advanced navigation systems that plan charging stops strategically. Tesla’s navigation system, for example, ensures that drivers do not have to charge for extended periods. Instead, it optimizes the route to balance driving and charging time. Drivers can charge for 15 to 25 minutes, even at fast chargers, recharging enough to continue their journey. This minimizes downtime and maximizes driving time.
Existing Solutions and Their Limitations
Currently, there are BEVs that do use a gas generator to charge the batteries. The Chevy Volt and BMW i3 are prime examples. The range extender in the BMW i3, however, is limited to about 40 mph. When the battery runs low, the generator can only provide enough power to keep the car moving at this speed. This restriction makes it impractical for high-speed travel.
The Chevy Volt, on the other hand, was highly successful with its range extender. The 2nd generation of the Volt was not only efficient but also visually appealing. It offered 50 miles of pure electric range before relying on the gasoline engine to extend the range. However, the integration of a gas engine into an otherwise electric vehicle still involves many challenges and complexities.
Conclusion
Given the advancements in battery technology and navigation systems in modern EVs, the idea of a modular generator in a BEV’s trunk seems less viable. The convenience and efficiency of current EVs, alongside the strategic planning tools provided by navigation systems, make modifications to include a range-extending generator a solution for a problem that no longer exists on a large scale.
For the time being, renting a longer-range EV or planning your trips with existing EV infrastructure is a more practical and efficient approach for those who require extended travel capabilities. As battery technology continues to evolve, the need for such modifications is likely to diminish, offering a cleaner and more efficient driving experience for the future.