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1. WO2001063306 - CIRCUIT FOR DETECTING LEAKAGE IN POWER SUPPLY

Publication Number WO/2001/063306
Publication Date 30.08.2001
International Application No. PCT/JP2001/001201
International Filing Date 20.02.2001
Chapter 2 Demand Filed 14.06.2001
IPC
G01R 31/36 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge
G01R 31/40 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
40Testing power supplies
H02J 7/00 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
7Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
CPC
G01R 19/16542
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
19Arrangements for measuring currents or voltages or for indicating presence or sign thereof
165Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
16533characterised by the application
16538in AC or DC supplies
16542for batteries
G01R 31/396
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
396Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
G01R 31/40
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
40Testing power supplies
G01R 31/50
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
G01R 31/52
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
52Testing for short-circuits, leakage current or ground faults
H02J 7/0021
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
7Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
0013acting upon several batteries simultaneously or sequentially
0021Monitoring or indicating circuits
Applicants
  • SANYO ELECTRIC CO., LTD. [JP]/[JP] (AllExceptUS)
  • YUGOU, Masaki [JP]/[JP] (UsOnly)
Inventors
  • YUGOU, Masaki
Agents
  • NISHIOKA, Nobuyasu
Priority Data
2000-4379822.02.2000JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) CIRCUIT FOR DETECTING LEAKAGE IN POWER SUPPLY
(FR) CIRCUIT DE DETECTION DE FUITE DANS UN DISPOSITIF D'ALIMENTATION
Abstract
(EN)
A power supply device comprises a battery unit (12) including a plurality of batteries (12a). A first current path (34) consisting of two divider resistors (30, 32), and a second current path (22) consisting of two protective resistors (14, 16) and two detection resistors (18, 20) are connected between the positive and negative terminals of the battery unit (12). The middle point (24) of the second path (22) is connected to ground (26) through an isolating resistor (28). The differences between the voltages (V1, V2) detected by the detection resistor (18, 20) and the reference voltage (Vc) at the connection (35) of the dividing resistors are applied as input voltages (V1IN, V2IN) to two operational amplifiers (36, 38), the output voltages (V1OUT, V2OUT) from which is used to detect leakage.
(FR)
Selon l'invention, un dispositif d'alimentation comprend un bloc d'accumulateurs (12) comprenant plusieurs accumulateurs (12a). Un premier trajet du courant (34) constitué de deux résistances de séparation (30, 32), et un deuxième trajet du courant (22) constitué de deux résistances de protection (14, 16) et de deux résistances de détection (18, 20) sont reliés entre le pôle positif et le pôle négatif du bloc d'accumulateurs (12). Le point médian (24) du deuxième trajet (22) est relié à la masse (26) par le biais d'une résistance isolante (28). Les écarts entre les tensions (V1, V2) détectées par les résistances de détection (18, 20) et la tension de référence (Vc) au point de raccordement (35) des résistances de séparation sont appliqués en tant que tensions d'entrée (V1IN, V2IN) sur deux amplificateurs opérationnels (36, 38) dont les tensions de sortie (V1OUT, V2OUT) sont utilisées pour détecter une fuite.
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