Methods and systems for charging a battery string while protecting against overcharging. One system includes: a pair of disconnect devices; a power distribution bus which is electrically connected to a battery string via the disconnect devices; a battery charger connected to supply battery power to the power distribution bus for charging the battery string; a module monitoring unit configured to sense individual battery cell voltages during charging; a first processor configured to activate one disconnect device to open when the sensed individual battery cell voltages indicate overcharging; a plurality of sensors connected to sense a full-string voltage measured across the battery string and first and second half-string voltages measured across first and second half-strings of the battery string; and a second processor connected to receive sensor data during charging. The second processor is configured to independently activate the second disconnect device to open when the sensor data indicates continued overcharging.
SYSTEMS AND METHODS FOR FAIL-SAFE BATTERY PROTECTION INDEPENDENT FROM BATTERY MANAGEMENT SYSTEM
SYSTEME UND VERFAHREN FÜR EINEN AUSFALLSICHEREN BATTERIESCHUTZ UNABHÄNGIG VOM BATTERIEVERWALTUNGSSYSTEM
SYSTÈMES ET PROCÉDÉS DE PROTECTION DE BATTERIE À SÉCURITÉ INTÉGRÉE INDÉPENDANTE D'UN SYSTÈME DE GESTION DE BATTERIE
2024-04-03
Patent
Elektronische Ressource
Englisch
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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