A current detection circuit (20), a current leakage detection method and a charging system. The current detection circuit (20) is capable of outputting an excitation signal to a first winding (u1) wound in a magnetic induction coil (10), and then determining whether there is leakage current in a first lead (L0) passing through the magnetic induction coil (10) based on a feedback signal induced by the first winding (u1) and a reference signal, thereby determining whether there is an electric leakage while a charging device (101) supplies electric energy to the outside, and providing a determination result to a control circuit (103). When there is an electric leakage, the control circuit (103) can cut off a loop of the charging device (101) for supplying electric energy to the outside in time, so that the charging device (101) can stop supplying electric energy to the outside, thereby reducing the occurrence of hazards and improving the safety and reliability of the charging process. Meanwhile, the reaction speed for controlling the charging process can be increased to improve the timeliness. In addition, the application range of the current detection circuit (20) is greatly widened because it is not limited by geography or climate.
CURRENT DETECTION CIRCUIT, CURRENT LEAKAGE DETECTION METHOD, AND CHARGING SYSTEM
STROMDETEKTIONSSCHALTUNG, STROMLECKDETEKTIONSVERFAHREN UND LADESYSTEM
CIRCUIT DE DÉTECTION DE COURANT, PROCÉDÉ DE DÉTECTION DE FUITE DE COURANT ET SYSTÈME DE CHARGE
22.05.2024
Patent
Elektronische Ressource
Englisch
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
Europäisches Patentamt | 2024
|Europäisches Patentamt | 2021