MEASURING APPARATUS FOR RESIDUAL CHARGE OF BATTERY

MEASURING APPARATUS FOR RESIDUAL CHARGE OF BATTERY

PURPOSE:To obtain an apparatus for securely measuring the residual charge of a nickel-cadmium battery. CONSTITUTION:An open voltage measuring circuit and a terminal voltage measuring circuit of a nickel-cadmium battery 3 for charging a charge circuit 1 are provided, wherein internal resistance 14 of...

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1. Verfasser: MIIDOKORO NOBUO
Format: Patent
Sprache:eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
TESTING
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creator MIIDOKORO NOBUO
description PURPOSE:To obtain an apparatus for securely measuring the residual charge of a nickel-cadmium battery. CONSTITUTION:An open voltage measuring circuit and a terminal voltage measuring circuit of a nickel-cadmium battery 3 for charging a charge circuit 1 are provided, wherein internal resistance 14 of the nickel-cadmium battery is measured by voltage difference between the circuits to measure remaining battery capacitance from the value. First, a first relay 2 is opened, a second relay 4 is closed and a third relay 5 is opened, and then open voltage of the battery 3 is digitized to be held in a latch circuit 9. Then the relay 5 is closed to digitally convert the terminal voltage of the battery 3. The open voltage from the latch circuit 9 and terminal voltage from an A/D-converter 7 are subjected to subtraction in a subtracting circuit 10, and the residual charge of the battery is displayed by a display circuit 12 with battery internal resistance obtained based on the above subtraction.
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CONSTITUTION:An open voltage measuring circuit and a terminal voltage measuring circuit of a nickel-cadmium battery 3 for charging a charge circuit 1 are provided, wherein internal resistance 14 of the nickel-cadmium battery is measured by voltage difference between the circuits to measure remaining battery capacitance from the value. First, a first relay 2 is opened, a second relay 4 is closed and a third relay 5 is opened, and then open voltage of the battery 3 is digitized to be held in a latch circuit 9. Then the relay 5 is closed to digitally convert the terminal voltage of the battery 3. 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CONSTITUTION:An open voltage measuring circuit and a terminal voltage measuring circuit of a nickel-cadmium battery 3 for charging a charge circuit 1 are provided, wherein internal resistance 14 of the nickel-cadmium battery is measured by voltage difference between the circuits to measure remaining battery capacitance from the value. First, a first relay 2 is opened, a second relay 4 is closed and a third relay 5 is opened, and then open voltage of the battery 3 is digitized to be held in a latch circuit 9. Then the relay 5 is closed to digitally convert the terminal voltage of the battery 3. The open voltage from the latch circuit 9 and terminal voltage from an A/D-converter 7 are subjected to subtraction in a subtracting circuit 10, and the residual charge of the battery is displayed by a display circuit 12 with battery internal resistance obtained based on the above subtraction.</abstract><oa>free_for_read</oa></addata></record>
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
TESTING
title MEASURING APPARATUS FOR RESIDUAL CHARGE OF BATTERY
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