Method and apparatus for confirming the charge amount and degradation state of a battery, a storage medium, an information processing apparatus, and an electronic apparatus
First Claim
1. A method of confirming battery charge amount and degradation state, comprising the steps of:
- measuring at a plurality of battery temperatures a cycle test battery in respect of one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging at predetermined time intervals substantially until battery end of life;
using measured values to generate a determination table showing relationships between prescribed charge amounts and prescribed degradation states;
measuring a subject battery in respect of same said one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging; and
comparing determination table values with a measured value of the subject battery to confirm present subject battery charge amount and degradation state in accordance with a determination table location of matching values.
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Abstract
A method and apparatus is used to confirm the charge amount and degradation state of a battery. Various cycle test battery measurements are conducted at prescribed time intervals until the end of the battery life, and the measured values are used to generate a determination table or determination tables showing relationships between battery charge amount and degradation state. To establish the charge amount and degradation state of a subject battery, the subject battery is measured and the results compared with determination table values. The existing charge amount and the state of battery degradation are estimated in accordance with a determination table location of matching values.
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Citations
78 Claims
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1. A method of confirming battery charge amount and degradation state, comprising the steps of:
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measuring at a plurality of battery temperatures a cycle test battery in respect of one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging at predetermined time intervals substantially until battery end of life;
using measured values to generate a determination table showing relationships between prescribed charge amounts and prescribed degradation states;
measuring a subject battery in respect of same said one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging; and
comparing determination table values with a measured value of the subject battery to confirm present subject battery charge amount and degradation state in accordance with a determination table location of matching values. - View Dependent Claims (3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77)
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2. A method of confirming battery charge amount and degradation state, comprising the steps of:
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measuring at a plurality of battery temperatures a cycle test battery at predetermined time intervals substantially until battery end of life, using measurement values of at least two selected from battery open voltage, current and voltage during discharge, and current and voltage during charging;
using measured values to generate determination tables showing relationships in each case between prescribed charge amounts and prescribed degradation states;
measuring a subject battery in respect of said at least two selected from battery open voltage, current and voltage during discharge, and current and voltage during charging; and
comparing determination table values with each of measured values of the subject battery to confirm present subject battery charge amount and degradation state in accordance with determination table locations or matching values, and simultaneously using an incidence of appearance at determination table locations resulting from the measured values to estimate present subject battery charge amount and degradation state. - View Dependent Claims (4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78)
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25. In an apparatus that confirms battery charge amount and degradation state in which
values of a determination table showing relationships between prescribed charge amounts and prescribed degradation states based on measurements, at a plurality of battery temperatures, of a cycle test battery in respect of at least one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging at predetermined time intervals substantially until battery end of life, and a measured value of a subject battery in respect of the same one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging, are compared and present subject battery charge amount and degradation state are confirmed in accordance with a determination table location of matching values, an apparatus for measuring open voltage in a battery, comprising at least; -
a trigger signal circuit that generates a signal at fixed time intervals to operate a voltmeter;
a timer for setting the time intervals at which the trigger signal circuit generates the signal; and
a counter for pre-setting a number of times the trigger signal circuit generates the signal.
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26. In an apparatus that confirms battery charge amount and degradation state in which
values of a determination table showing relationships between prescribed charge amounts and prescribed degradation states based on measurements, at a plurality or battery temperatures, of a cycle test battery in respect of at least one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging at predetermined time intervals substantially until battery end of life, and a measured value of a subject battery in respect of the same one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging, are compared and present subject battery charge amount and degradation state are confirmed in accordance with a determination table location of matching values, an apparatus for measuring battery current and voltage during discharge, comprising at least: -
a trigger signal circuit that generates a signal at fixed time intervals to operate a voltmeter and an ammeter;
a pulse-discharge generation circuit that discharges a battery at fixed time intervals;
a timer for setting time intervals at which the trigger signal circuit generates the signal and the pulse-discharge generation circuit discharges the battery; and
a counter for pre-setting a number of times the trigger signal circuit generates the signal and the pulse-discharge generation circuit discharges the battery.
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27. In an apparatus that confirms battery charge amount and degradation state in which
values of a determination table showing relationships between prescribed charge amounts and prescribed degradation states based on measurements, at a plurality of battery temperatures, of a cycle test battery in respect of at least one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging at predetermined time intervals substantially until battery end of life, and a measured value of a subject battery in respect of the same one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging, are compared and present subject battery charge amount and degradation state are confirmed in accordance with a determination table location of matching values, an apparatus for measuring constant current, constant voltage discharge of a battery, comprising at least; -
a trigger signal circuit that generates a signal at fixed time intervals to operate a voltmeter and an ammeter;
a constant current, constant voltage discharge circuit that discharges a battery at fixed time intervals;
a timer for setting time intervals at which the trigger signal circuit generates the signal and the constant current, constant voltage discharge circuit discharges the battery;
a counter for pre-setting a number of times the trigger signal circuit generates the signal and the constant current, constant voltage discharge circuit discharges the battery; and
a time-measurement circuit for measurement of time from start of discharge to a set fall in voltage.
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28. In an apparatus that confirms battery charge amount and degradation state in which
values of a determination table showing relationships between prescribed charge amounts and prescribed degradation states based on measurements, at a plurality of battery temperatures, of a cycle test battery in respect of at least one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging at predetermined time intervals substantially until battery end of life, and a measured value of a subject battery in respect of the same one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging, are compared and present subject battery charge amount and degradation state are confirmed in accordance with a determination table location of matching values, an apparatus for measuring battery current and voltage during charging, comprising at least: -
a trigger signal circuit that operates a voltmeter and an ammeter by generating a signal at fixed time intervals;
a constant current, constant voltage charging circuit that charges a battery at fixed time intervals;
a timer for setting time intervals at which the trigger signal circuit generates the signal and the constant current, constant voltage charging circuit charges the battery; and
a counter for pre-setting a number of times the trigger signal circuit generates the signal and the constant current, constant voltage charging circuit charges the battery.
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29. In an apparatus that confirms battery charge amount and degradation state in which
values of a determination table showing relationships between prescribed charge amounts and prescribed degradation states based on measurements, at a plurality of battery temperatures, of a cycle test battery in respect of at least one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging at predetermined time intervals substantially until battery end of life, and a measured value of a subject battery in respect of the same one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging, are compared and present subject battery charge amount and degradation state are confirmed in accordance with a determination table location of matching values, an apparatus for measuring constant current and constant voltage charging of a battery, comprising at least: -
a time-measurement circuit for measurement of time from start of charging to a set rise in voltage;
a trigger signal circuit that generates a signal at fixed time intervals to operate a voltmeter, an ammeter and the time-measurement circuit;
a constant current, constant voltage charging circuit that charges a battery at fixed time intervals, a timer for setting time intervals at which the trigger signal circuit generates the signal and the constant current, constant voltage charging circuit charges the battery, and a counter for pre-setting a number of times the trigger signal circuit generates the signal and the constant current, constant voltage charging circuit charges the battery.
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30. In an apparatus that confirms battery charge amount and degradation state in which
values of a determination table showing relationships between prescribed charge amounts and prescribed degradation states based on measurements, at a plurality of battery temperatures, of a cycle test battery in respect of at least one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging at predetermined time intervals substantially until battery end of life, and a measured value of a subject battery in respect of the same one selected from battery open voltage, current and voltage during discharge, and current and voltage during charging, are compared and present subject battery charge amount and degradation state are confirmed in accordance with a determination table location of matching values, a thermistor apparatus for measuring internal and surface temperatures of a battery located in proximity to the thermistor apparatus, comprising at least: -
a trigger signal circuit that generates a signal at fixed time intervals to operate a resistance meter;
a timer for setting time intervals at which the trigger signal circuit generates the signal; and
a counter for pre-setting a number of times the trigger signal circuit generates the signal.
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Specification