The invention relates to an electrical vehicle (3) charging system comprising a plurality of power stages (1) each configured for providing electrical energy to charge an electrical vehicle (3), a plurality of outlets (4) each comprising an outlet switch (5) configured for connecting the electrical vehicle (3) to the respective power stage (1) for charging the electrical vehicle (3), at least one parallelization switch (7) configured for connecting at least two power stages (1) in parallel, a guarding wire (8) running in parallel along a DC path formed by the outlet switches (5) and the at least one parallelization switch (7) and comprising a plurality of outlet guarding switches (10), a plurality of current sensors (11), a plurality of voltage sources (12) and at least one parallelization guarding switch (13), and a control device (14) connected to the current sensors (11), whereby each one voltage source (12), each one current sensor (11) and each one outlet guarding switch (10) is associated to each one outlet (4), each one outlet guarding switch (10) is associated to each one outlet switch (5) such that switching the outlet switch (5) switches the outlet guarding switch (10), the at least one parallelization guarding switch (13) is associated to the at least one parallelization switch (7) such that switching the parallelization switch (7) switches the parallelization guarding switch (13), each one voltage source (12) is configured for feeding the guarding wire (8) and thereby the respective current sensor (11) and the respective outlet guarding switch (10), and the control device (14) is configured for opening at least one of the outlet switches (5) and/or the at least one parallelization switch (7) if at least one of the current sensors (11) measures a current greater zero.
ELECTRICAL VEHICLE CHARGING SYSTEM FOR PREVENTING OF SIMULTANEOUS CLOSING OF OUTLET CONTACTORS
ELEKTROFAHRZEUGLADESYSTEM ZUR VERHINDERUNG DES GLEICHZEITIGEN SCHLIESSENS VON AUSLASSKONTAKTEN
SYSTÈME DE CHARGEMENT DE VÉHICULE ÉLECTRIQUE POUR LA PRÉVENTION DE LA FERMETURE SIMULTANÉE DE CONTACTEURS DE SORTIE
2021-04-28
Patent
Electronic Resource
English
IPC: | H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / 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 |
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