Vehicle electrical system Traceability Hierarchy Diagram

Element View:
Vehicle electrical systemVehicle electrical systemVoltage (on-board batteries, external batteries, super capacitors, etc)Maximum voltage must never exceed 48 V nominal.Maximum voltage must never exceed 60V max (peak).Propulsion battery:
Technical k-brief about batteries
Concept chosen for 2012.Propulsion battery:
Technical k-brief about batteries
Concept chosen for 2012.Lithium ion battery.The BMS must protect over-discharge (for e-mobility vehicles).For non e-mobility vehicles, the accessory battery BMS system cell balancing and overcharge protection may be contained in the off-board charger.All batteries and super capacitors must be short circuit protected.Protection may be in the form of a fuse, fusible link, or a current interrupting device (circuit breaker).Automatic reclosing current interrupting devices are not allowed.Short circuit protection devices must be located on the positive and as close as possible to the battery itself.The rating of the short circuit protection device must be such that the battery will be able to supply enough short circuit current at all times to open the device.Car system batteryAll vehicle electrical circuits must be protected against electrical overload.Overload protection may be in the form of fixed current limits within electric controllers or by the insertion of individual circuit fuses.Hybrid and e-mobility vehicles which have a propulsion battery.Propulsion battery or super capacitors must be electrically isolated on both positive and negative circuits.Must be isolated from the vehicle frame.Must be isolated from the accessory battery circuit.Propulsion battery:
Technical k-brief about batteries
Concept chosen for 2012.Propulsion battery:
Technical k-brief about batteries
Concept chosen for 2012.(for e-mobility vehicles only) Only one propulsion battery  is allowed.Only one accessory battery per vehicle is allowed.The accessory battery (refer article 57 h) must maintain a negative ground.The accessory battery must operate all safety devices (e.g. horn, hydrogen sensor) for the duration of the competition.The accessory battery may also operate for: internal combustion engine, the starter motor, the ignition, the instrumentation and electronic management systems.All other additional sources of electricity are forbidden.The accessory battery is not allowed to power compressors, blowers, engine cooling systems, motors, etc. It may however be used to power a ventilation/cooling fan for the driver.The organizers reserve the right to request Teams to install one joule meter, intended to measure the quantity of energy provided by the accessory battery. If this amount of energy exceeds the power typically required to operate the starter motor, horn and safety devices the competitor will be disqualified.Car system batteryBoth propulsion and accessory batteries must be installed outside of the driver's compartment behind a bulk head (see article 27).The following devices may be powered by batteries other than the propulsion or accessory battery provided they use built-in batteries: radio communication system, GPS system, data loggers excluding engine management units, driver ventilators.All electrical/electronic cases must be made of transparent material or at least have a transparent top.Must have a Battery Management System (BMS) installed to control and protect the battery against risk of fire. The BMS must provide cell balancing during off-track charging and protect against overcharge,( and for e-mobility vehicles) over discharge, over-current and over temperature. For non e-mobility vehicles, the accessory battery BMS system cell balancing and overcharge protection may be contained in the off-board charger.The BMS must provide cell balancing during off-track charging.The BMS must protect against overcharge.The BMS must protect against over-current.The BMS must protect against over-temperature.Battery management system