ANOMALY DETECTION DEVICE

PROBLEM TO BE SOLVED: To provide an anomaly detection device that can detect a disconnection between each battery cell constituting an assembled battery and a circuit for monitoring each battery cell even if a breakdown voltage of a Zener diode is set low.SOLUTION: The anomaly detection device inclu...

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1. Verfasser: KAMIYA YASUHIRO
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creator KAMIYA YASUHIRO
description PROBLEM TO BE SOLVED: To provide an anomaly detection device that can detect a disconnection between each battery cell constituting an assembled battery and a circuit for monitoring each battery cell even if a breakdown voltage of a Zener diode is set low.SOLUTION: The anomaly detection device includes: a plurality of detection terminals C connected to connection parts of adjacent battery cells 10; Zener diodes 21 connected in parallel between opposite terminals of the battery cells 10, respectively; a plurality of short-circuiting circuits 22 having short-circuiting switches 222 for short-circuiting the detection terminals C connected to the opposite terminals of the battery cells 10, respectively; a monitoring circuit 23 for controlling each short-circuiting circuit and detecting a terminal voltage between every adjacent detection terminal C; and a control section 24b for determining whether or not there is a disconnection between the connection part of every adjacent battery cell 10 and the detection terminal C on the basis of a corrected voltage value obtained by removing a variation component variable in accordance with a cell voltage Vc of the battery cell 10 and a protection voltage Vz of the Zener diode 21 from a terminal voltage Vp available when the short-circuiting switch 222 is turned on.
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Zener diodes 21 connected in parallel between opposite terminals of the battery cells 10, respectively; a plurality of short-circuiting circuits 22 having short-circuiting switches 222 for short-circuiting the detection terminals C connected to the opposite terminals of the battery cells 10, respectively; a monitoring circuit 23 for controlling each short-circuiting circuit and detecting a terminal voltage between every adjacent detection terminal C; and a control section 24b for determining whether or not there is a disconnection between the connection part of every adjacent battery cell 10 and the detection terminal C on the basis of a corrected voltage value obtained by removing a variation component variable in accordance with a cell voltage Vc of the battery cell 10 and a protection voltage Vz of the Zener diode 21 from a terminal voltage Vp available when the short-circuiting switch 222 is turned on.</description><language>eng</language><subject>BASIC ELECTRIC ELEMENTS ; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER ; 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subjects BASIC ELECTRIC ELEMENTS
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
SYSTEMS FOR STORING ELECTRIC ENERGY
TESTING
title ANOMALY DETECTION DEVICE
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