System und Verfahren zur Bestimmung eines Widerstandswertes

Details

Veröffentlichungs-Nr.

EP4521125

Aktenzeichen

EP23196564

Anmeldetag

11. September 2023

Veröffentlichung

12. März 2025

Rechtsraum

EP

IPC

G01R27/14G01R31/00G01R31/58

Abstract

A vehicle electrical system comprising a vehicle low-voltage electrical circuit having a low-voltage energy storage unit (6) connected to a first low-voltage load (28) via a battery contactor (19) and a first section (25) of a vehicle DC supply cable harness (22), a cable resistance measurement arrangement (13) having a dedicated electrical power storage (18) and a switching arrangement (20) configured for selective connection of the dedicated electrical power storage (18) with the first section (25) of a vehicle DC supply cable harness (22); and an electrical control system configured for controlling operation of the switching arrangement (20) and the battery contactor (19). The electric control system is configured to perform a resistance measurement of the first section (25) of the vehicle DC supply cable harness (22) by: setting the battery contactor (19) in open state for interrupting electrical power supply from the low-voltage energy storage unit (6) to the first low-voltage load (28); controlling the switching arrangement (20) for temporarily connecting the first section (25) of a vehicle DC supply cable harness (22) with the dedicated electrical power storage (18) for generating a measurement current through the first section (25) of the vehicle DC supply cable harness (22); and determining a resistance value of the first section (25) of the vehicle DC supply cable harness (22) based on the measurement current level.

Anmelder

Firmen

Ningbo Geely Automobile Research & Development Co. Ltd.
Zhejiang Geely Holding Group Co., Ltd.

Land

🇨🇳 China

Fachgebiete