Vehicle electrical system Traceability Spider Diagram

Element View:
Vehicle electrical systemVehicle electrical systemVoltage (on-board batteries, external batteries, super capacitors, etc)Maximum voltage must never exceed 48 V nominal.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.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.(for e-mobility vehicles only) Only one propulsion battery  is allowed.Only one accessory battery per vehicle is allowed.Both 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