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1. WO2020142312 - ELECTRIC CURRENT PROTECTION CIRCUIT AND METHOD OF USING SAME

Publication Number WO/2020/142312
Publication Date 09.07.2020
International Application No. PCT/US2019/068290
International Filing Date 23.12.2019
IPC
G01R 31/327 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
327Testing of circuit interrupters, switches or circuit-breakers
CPC
B60L 3/04
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
04Cutting off the power supply under fault conditions
B60L 3/12
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
12Recording operating variables ; ; Monitoring of operating variables
B60L 58/12
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
12responding to state of charge [SoC]
B60L 58/20
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
18of two or more battery modules
20having different nominal voltages
G01R 31/2863
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
28Testing of electronic circuits, e.g. by signal tracer
2851Testing of integrated circuits [IC]
2855Environmental, reliability or burn-in testing
286External aspects, e.g. related to chambers, contacting devices or handlers
2863Contacting devices, e.g. sockets, burn-in boards or mounting fixtures
G01R 31/3277
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
327Testing of circuit interrupters, switches or circuit-breakers
3277of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
Applicants
  • VITESCO TECHNOLOGIES USA, LLC [US]/[US]
Inventors
  • BONETTI, Robert Arthur
Agents
  • ESSER, William F
  • BENDER, Ronald P
Priority Data
16/718,96518.12.2019US
62/786,52030.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ELECTRIC CURRENT PROTECTION CIRCUIT AND METHOD OF USING SAME
(FR) CIRCUIT DE PROTECTION CONTRE UN COURANT ÉLECTRIQUE ET SON PROCÉDÉ D'UTILISATION
Abstract
(EN)
A protection device for a vehicle electrical system, including a battery pack having at least one contactor. A microcontroller generates a test pulse at a pulse output thereof and a sense input terminal. The microcontroller has at least one output coupled to the control terminal of the at least one contactor. A first capacitor has a terminal coupled to a first terminal of the at least one contactor; a second capacitor having a terminal coupled to a second terminal of the at least one contactor; and circuitry coupled between the microcontroller and the first and second capacitors. The circuitry reflects the test pulse to the sense input terminal if each contactor is open when the microcontroller applies a contactor opening voltage to the contactor control terminal, and presents a signal different from the reflected test pulse to the sense input terminal of the microcontroller if any contactor is welded shut.
(FR)
La présente invention concerne un dispositif de protection pour un système électrique de véhicule, comprenant un bloc-batterie doté d'au moins un contacteur. Un microcontrôleur génère une impulsion de test à une sortie d'impulsion de celui-ci et à une borne d'entrée de détection. Le microcontrôleur comporte au moins une sortie couplée à la borne de commande du ou des contacteurs. Un premier condensateur comporte une borne couplée à une première borne du ou des contacteurs; un second condensateur comportant une borne couplée à une seconde borne du ou des contacteurs; et des circuits couplés entre le microcontrôleur et les premier et second condensateurs. Le circuit renvoie l'impulsion de test à la borne d'entrée de détection si chaque contacteur est ouvert quand le microcontrôleur applique une tension d'ouverture de contacteur à la borne de commande de contacteur, et présente un signal différent de l'impulsion de test renvoyée à la borne d'entrée de détection du microcontrôleur si aucun contacteur n'est soudé.
Also published as
Latest bibliographic data on file with the International Bureau