Isolationswiderstandsdetektionssystem für Elektrisches Fahrzeug und Isolationswiderstanddetektionsverfahren dafür

Details

Veröffentlichungs-Nr.

EP4057012

Aktenzeichen

EP21192167

Anmeldetag

19. August 2021

Veröffentlichung

10. April 2024

Erteilung

10. April 2024

Rechtsraum

EP

IPC

G01R27/02G01R31/52H01M10/42G01R31/389H01M16/00

Abstract

An insulation resistance detection system (1) for an electric vehicle (300) is used to detect a positive insulation resistance (RP) between a positive electrode (200+) of a battery (200) of the electric vehicle (300) and an equipment grounding point (GND), and detect a negative insulation resistance (RN) between a negative electrode (200-) of the battery (200) and the equipment grounding point (GND). The insulation resistance detection system (1) includes a negative detection circuit (10), a positive detection circuit (20), and a control unit (30). The control unit (30) controls the negative detection circuit (10) to be charged to generate a first capacitor voltage (VC1), and controls the positive detection circuit (20) to be charged to generate a second capacitor voltage (VC2). The control unit (30) determines whether the negative insulation resistance (RN) is abnormal according to the first capacitor voltage (VC1) and a battery voltage (VPN) of the battery (200), and determines whether the positive insulation resistance (RP) is abnormal according to the second capacitor voltage (VC2) and the battery voltage (VPN).

Anmelder

Firma

Delta Electronics, Inc.

Land

🇹🇼 Taiwan

Fachgebiete