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1. (WO2018145397) DIAGNOSIS SYSTEM FOR DIRECT-CURRENT CHARGING RELAY OF VEHICLE

Pub. No.:    WO/2018/145397    International Application No.:    PCT/CN2017/091805
Publication Date: Fri Aug 17 01:59:59 CEST 2018 International Filing Date: Thu Jul 06 01:59:59 CEST 2017
IPC: G01R 31/327
H02J 7/00
Applicants: NIO CO., LTD.
上海蔚来汽车有限公司
Inventors: ZHOU, Yi
周毅
Title: DIAGNOSIS SYSTEM FOR DIRECT-CURRENT CHARGING RELAY OF VEHICLE
Abstract:
A diagnosis system for a direct-current charging relay of a vehicle, comprising a controller (1), two resistor groups R1 and R2, and a switch S, wherein the two resistor groups R1 and R2 are bridged in series between direct-current charging high-voltage lines of the vehicle; the resistor group R1 consists of two sub-resistors connected in series, and the controller (1) can measure, by means of a first voltage detection port, a voltage V1 at a common terminal of the two sub-resistors connected in series which constitute the resistor group R1; the resistor group R2 consists of two sub-resistors connected in series, and the controller (1) can measure, by means of a second voltage detection port, a voltage V2 at the common terminal of the two sub-resistors connected in series which constitute the resistor group R2; and the controller (1) can execute a diagnosis operation on the basis of measurement values of the voltages V1 and V2. The diagnosis system has a high diagnosis efficiency and low costs.