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1. WO2021064600 - FUEL CELL STACK INSULATION MONITORING SYSTEM

Publication Number WO/2021/064600
Publication Date 08.04.2021
International Application No. PCT/IB2020/059159
International Filing Date 30.09.2020
IPC
G01R 31/52 2020.1
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
G01R 27/02 2006.1
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
27Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
02Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
CPC
B60L 3/0046
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
3Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
0023Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
0046relating to electric energy storage systems, e.g. batteries or capacitors
B60L 58/16
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
58Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
10for monitoring or controlling batteries
16responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
G01R 27/025
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
27Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
02Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
025Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
G01R 31/371
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]
371with remote indication, e.g. on external chargers
G01R 31/378
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]
378specially adapted for the type of battery or accumulator
G01R 31/392
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]
392Determining battery ageing or deterioration, e.g. state of health
Applicants
  • CERES INTELLECTUAL PROPERTY COMPANY LIMITED [GB]/[GB]
Inventors
  • SUN, Lei
Agents
  • WYNNE-JONES IP LIMITED
Priority Data
201921663423.630.09.2019CN
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) FUEL CELL STACK INSULATION MONITORING SYSTEM
(FR) SYSTÈME DE SURVEILLANCE DE L'ISOLATION D'UN EMPILEMENT DE PILES À COMBUSTIBLE
Abstract
(EN) The present application provides a stack module fault monitoring system, comprising an insulation resistance tester; a stack module, which consists of m groups of stack strings; m electronic switch groups, wherein each electronic switch group comprises a first switch and a second switch; one end of the first switch is connected with positive electrodes of one group of stack strings, and the other end of the first switch is connected with a positive electrode end of the insulation resistance tester; one end of the second switch is connected with negative electrodes of the group of stack strings, and the other end of the second switch is connected with a negative electrode end of the insulation resistance tester; a control end of a switch in the electronic switch group is connected with a controller, and the switch in the electronic switch group is controlled to be on and off by the controller; the insulation resistance tester tests the insulation resistance of each group of stack strings in sequence and sends the insulation resistance to the controller; the controller determines whether the group of stack strings has then insulation fault or not according to the insulation resistance, so as to realize online monitoring on whether each group of stack strings has the insulation fault or not, and quickly position the stack string with the insulation fault in the stack module.
(FR) La présente invention concerne un système de surveillance de défaillance d'un module d'empilement, comprenant un testeur de résistance d'isolation ; un module d'empilement, qui se compose de m groupes de chaînes d'empilements ; m groupes de commutateurs électroniques, chaque groupe de commutateurs électroniques comprenant un premier et un second commutateur ; une extrémité du premier commutateur est connectée à des électrodes positives d'un groupe de chaînes d'empilements, et l'autre extrémité du premier commutateur est connectée à une extrémité d'électrode positive du testeur de résistance d'isolation ; une extrémité du second commutateur est connectée à des électrodes négatives du groupe de chaînes d'empilements, et l'autre extrémité du second commutateur est connectée à une extrémité d'électrode négative du testeur de résistance d'isolation ; une extrémité de commande d'un commutateur du groupe de commutateurs électroniques est connectée à un dispositif de commande, et ce commutateur du groupe de commutateurs électroniques est commandé pour être sous tension et hors tension par le dispositif de commande ; le testeur de résistance d'isolation teste la résistance d'isolation de chaque groupe de chaînes d'empilements en séquence et envoie la résistance d'isolation au dispositif de commande ; le dispositif de commande détermine si le groupe de chaînes d'empilements présente ensuite ou non une défaillance d'isolation en fonction de la résistance d'isolation, de manière à réaliser une surveillance en ligne indiquant si chaque groupe de chaînes d'empilements présente ou non la défaillance d'isolation, et à positionner rapidement la chaîne d'empilement présentant le défaut d'isolation dans le module d'empilement.
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