Our onboard management systems

Headquartered in Toulouse, Venturi Space France contributes to several key projects, including the development of advanced electronic systems.

Critical electronic systems for lunar rovers

Battery Management System (BMS)

The BMS is integrated into Venturi Space’s Lunar Battery. Each cell voltage is monitored every 10ms, along with several temperature sensing points to ensure safe battery operation, optimal performance & extended lifespan.

Thanks to Venturi Space’s algorithm originally developed for high performance terrestrial applications such as the VOXAN motorbike, the BMS operates independently and computes in real-time the battery’s State of Charge (SOC), State of Health (SOH) and current limitations.

The BMS is composed of one Battery Management Unit (BMU) & multiple Cell Monitoring Units (CMU).

The battery and its BMS are among the key components of the rover to ensure its survival during lunar nights (equivalent to 14 Earth days at the South Pole). In these conditions of darkness and extreme cold, the BMS is responsible for the thermal and energy management of the rover.

Battery Management Unit (BMU)

The Venturi Space BMU is a master device dedicated to the coordinated management of Cell Monitoring Units (CMUs). Isolated from the battery circuit, it provides secure and centralised communication with the entire system.

Equipped with advanced software functionalities, it manages communications, monitors cell status, and controls balancing operations.

Cell Monitoring Unit (CMU)

The CMU developed by Venturi Space plays a key role in the energy management architecture. Directly connected to the battery cells, it ensures continuous monitoring of their electrical parameters, guaranteeing reliable and safe operation.

Operating as a slave device, the CMU communicates with a master unit to transmit critical data regarding cell status. It also features a passive balancing function, helping to maintain cell uniformity and optimise the system’s lifespan.