The ENVO D50 battery system introduces a significant advancement in e-mobility energy management through the integration of CANBUS-based charging, allowing for energy delivery and charge control based on Watt-hours (Wh) rather than relying solely on voltage thresholds. This represents a shift from traditional charging methodologies to a more accurate and capacity-optimized approach.

Traditional Charging Limitations: Voltage as a Proxy for Capacity

Conventional battery charging systems operate by monitoring voltage levels. Charging is typically terminated once a predetermined voltage threshold is reached. While this method is simple and effective to an extent, it does not guarantee that the battery has been charged to its full energy capacity.

Voltage is not a direct measure of capacity; rather, it is an indicator of the battery’s state of charge (SOC). Two batteries with the same voltage reading may have different actual energy content depending on their internal state and chemistry.

ENVO’s CANBUS-Enabled Watt-Hour Charging

The ENVO D50 battery and charger utilize a CANBUS communication protocol that allows real-time data exchange between the charger and the battery’s Battery Management System (BMS). This enables charging to be managed based on Watt-hours (Wh) – the true measure of stored energy, calculated as:

Watt-hours (Wh) = Voltage (V) × Amp-hours (Ah)

This approach allows the charger to accurately fill the battery to its rated energy capacity, rather than prematurely terminating charging based on voltage alone.

Technical Advantages of Wh-Based Charging

• Precision Energy Delivery: The system ensures that charging continues until the full designed energy capacity in Wh is delivered to the battery.

• Improved SOC Accuracy: By charging based on actual energy content, the SOC readings become more reliable for the end user.

• Extended Usable Range: Riders benefit from a fully charged battery that reflects the maximum potential energy, improving range consistency.

• Battery Health Management: CANBUS communication supports more granular monitoring of internal battery conditions (temperature, cell balancing, current, etc.), optimizing charging algorithms to enhance battery life.