EV Battery Management System

Project Overview

An electric motorcycle manufacturer required a custom Battery Management System (BMS) for their lightweight EV platform. The system needed cell protection, performance monitoring, system diagnostics, and ITAR compliance for defense applications. The BMS also required data logging for predictive maintenance and future product development.

The Details

Industry

Electrification

CAPABILITIES APPLIED

  • Custom BMS Design
  • Embedded Systems & Firmware
  • Circuit Design & PCB Layout
  • Active Cell Balancing
  • Data Logging & Predictive Analytics
  • ITAR-Compliant Development
  • Vehicle Systems Integration
  • Modular Platform Architecture

The Challenge

Off-the-shelf BMS solutions did not meet the space, weight, and performance constraints of a lightweight electric motorcycle. The system required custom circuit design, embedded firmware, and packaging tailored to the vehicle’s form factor while maintaining reliability. ITAR compliance restricted technical data access and required U.S. export control standards for development, component sourcing, and documentation. The BMS needed continuous monitoring of cell voltages, temperatures, and current to prevent overcharging, over-discharging, and thermal events. Cell balancing was required to maintain uniform charge distribution and extend battery life. Data logging capabilities were needed to capture usage patterns, performance metrics, and degradation indicators for predictive maintenance and warranty analysis. Integration with the motorcycle’s propulsion controls, displays, and communication networks was required, providing accurate state-of-charge and state-of-health information.

Customer Results

The Result

Re:Build delivered a modular BMS platform designed for the motorcycle’s form factor and electrical specifications.

Real-time monitoring tracked voltage, temperature, and current with protection algorithms preventing dangerous conditions.
Active cell balancing maximized battery capacity and extended lifespan. State-of-charge tracking provided accurate range estimates. Embedded data logging captured usage metrics, charging patterns, and performance data for predictive maintenance diagnostics.
The modular design integrated with vehicle control systems and displays through standardized communication interfaces. ITAR-compliant development processes met U.S. export control requirements for defense applications.