Regenerative braking in HEVs (Hybrid Electric Vehicles) and PHEVs (Plug-in Hybrid Electric Vehicles) shares core functionality but differs in implementation and emphasis due to their energy storage capabilities and driving modes. Here’s a breakdown:
Core Similarities
Both use regenerative braking to convert kinetic energy into electricity during deceleration, storing it in their batteries to reduce reliance on friction brakes and improve efficiency.
Key Differences
- Battery Capacity & Recharging Priority
- HEVs rely exclusively on regenerative braking and the gas engine to recharge their smaller batteries.
- PHEVs use regenerative braking alongside plug-in charging for their larger batteries, allowing more energy storage and prioritizing electric-only driving until depletion.
- Regenerative Braking Customization
- HEVs often have simpler regenerative braking systems optimized for frequent, small energy recapture.
- PHEVs frequently offer driver-adjustable regen levels, including strong one-pedal driving modes, leveraging their larger battery and motor capacity to maximize electric range.
- Role in Driving Modes
- HEVs use regenerative braking to support fuel efficiency by managing energy flow between the engine and motor.
- PHEVs employ regenerative braking to extend electric-only range, functioning like an EV until battery reserves drop, after which they default to hybrid operation.
Summary
While both hybrids use regenerative braking to improve efficiency, PHEVs emphasize customizable, high-regen modes to maximize electric driving, whereas HEVs focus on seamless integration with gas-engine operation.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-does-regenerative-braking-in-hevs-and-phevs-differ/
