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Description
この発明は上述した課題を解決するためになされたもので、本発明の第１の態様による電池劣化判定装置は、二次電池の電流値または電圧値の少なくとも一方である測定値の変化率の大きさが所定の変化率以下となっている第１時刻、および、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ前記第１時刻との間における前記測定値の変化量の大きさが所定の変化量以上となっている第２時刻を検出する時刻検出部と、前記第１時刻における前記二次電池の電流値および電圧値と前記第２時刻における前記二次電池の電流値および電圧値とに基づいて、当該二次電池の内部抵抗値を算出する抵抗値算出部と、前記二次電池の内部抵抗値に基づいて、当該二次電池の劣化状況を判定する電池劣化状況判定部と、を具備し、前記時刻検出部は、前記測定値の変化率の大きさが所定の変化率以下となっている時刻を前記第２時刻の候補として検出し、当該第２時刻の候補よりも過去の時刻であって、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ、前記第２時刻の候補との間における前記測定値の変化量の大きさが所定の変化量以上となっている時刻を前記第１時刻として検出することで、前記第１時刻および前記第２時刻を検出することを特徴とする。 The present invention has been made in order to solve the above-described problems, and the battery deterioration determination device according to the first aspect of the present invention provides a rate of change of a measured value that is at least one of a current value or a voltage value of a secondary battery. The first time when the magnitude is less than or equal to a predetermined change rate, and the measured value between the first time and the magnitude of the change rate of the measured value is less than or equal to a predetermined change rate A time detection unit that detects a second time when the magnitude of the change amount is equal to or greater than a predetermined change amount, and the current value and voltage value of the secondary battery at the first time, and the second time at the second time. Based on the current value and voltage value of the secondary battery, a resistance value calculation unit that calculates the internal resistance value of the secondary battery, and the deterioration status of the secondary battery based on the internal resistance value of the secondary battery. determining includes a battery deterioration state determining section, a front The time detection unit detects a time at which the magnitude of the change rate of the measurement value is equal to or less than a predetermined change rate as a candidate for the second time, and is a time that is past the second time candidate. The magnitude of the change rate of the measured value is not more than a predetermined change rate, and the magnitude of the change amount of the measured value with respect to the candidate at the second time is not less than the predetermined change amount. The first time and the second time are detected by detecting the current time as the first time .
また、本発明のさらにもう一つの態様による抵抗値算出装置は、二次電池の電流値または電圧値の少なくとも一方である測定値の変化率の大きさが所定の変化率以下となっている第１時刻、および、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ前記第１時刻との間における前記測定値の変化量の大きさが所定の変化量以上となっている第２時刻を検出する時刻検出部と、前記第１時刻における前記二次電池の電流値および電圧値と前記第２時刻における前記二次電池の電流値および電圧値とに基づいて、当該二次電池の内部抵抗値を算出する抵抗値算出部と、を具備し、前記時刻検出部は、前記測定値の変化率の大きさが所定の変化率以下となっている時刻を前記第２時刻の候補として検出し、当該第２時刻の候補よりも過去の時刻であって、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ、前記第２時刻の候補との間における前記測定値の変化量の大きさが所定の変化量以上となっている時刻を前記第１時刻として検出することで、前記第１時刻および前記第２時刻を検出することを特徴とする。 Further, in the resistance value calculating apparatus according to still another aspect of the present invention, the magnitude of the change rate of the measured value that is at least one of the current value or the voltage value of the secondary battery is equal to or less than a predetermined change rate. The magnitude of the change rate of the measurement value is equal to or less than a predetermined change rate at one time, and the magnitude of the change amount of the measurement value between the first time and the predetermined change amount is greater than or equal to the predetermined change amount. Based on the time detection unit that detects the second time, the current value and voltage value of the secondary battery at the first time, and the current value and voltage value of the secondary battery at the second time, A resistance value calculation unit that calculates an internal resistance value of the secondary battery, and the time detection unit sets a time when the magnitude of the change rate of the measured value is equal to or less than a predetermined change rate. Detected as a candidate for 2 hours and a candidate for the second time Is a past time, the magnitude of the change rate of the measurement value is equal to or less than a predetermined change rate, and the magnitude of the change amount of the measurement value with respect to the second time candidate is The first time and the second time are detected by detecting a time that is equal to or greater than a predetermined change amount as the first time .
また、本発明のさらにもう一つの態様による電池劣化判定方法は、電池劣化判定装置の電池劣化判定方法であって、二次電池の電流値または電圧値の少なくとも一方である測定値の変化率の大きさが所定の変化率以下となっている第１時刻、および、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ前記第１時刻との間における前記測定値の変化量の大きさが所定の変化量以上となっている第２時刻を検出する時刻検出ステップと、前記第１時刻における前記二次電池の電流値および電圧値と前記第２時刻における前記二次電池の電流値および電圧値とに基づいて、当該二次電池の内部抵抗値を算出する抵抗値算出ステップと、前記二次電池の内部抵抗値に基づいて、当該二次電池の劣化状況を判定する電池劣化状況判定ステップと、を具備し、前記時刻検出ステップでは、前記測定値の変化率の大きさが所定の変化率以下となっている時刻を前記第２時刻の候補として検出し、当該第２時刻の候補よりも過去の時刻であって、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ、前記第２時刻の候補との間における前記測定値の変化量の大きさが所定の変化量以上となっている時刻を前記第１時刻として検出することで、前記第１時刻および前記第２時刻を検出することを特徴とする。 A battery deterioration determination method according to still another aspect of the present invention is a battery deterioration determination method of a battery deterioration determination device, wherein the rate of change of a measured value that is at least one of a current value or a voltage value of a secondary battery is determined. The first time when the magnitude is less than or equal to a predetermined change rate, and the measured value between the first time and the magnitude of the change rate of the measured value is less than or equal to a predetermined change rate A time detection step of detecting a second time when the magnitude of the change amount of the second battery is greater than or equal to a predetermined change amount; a current value and a voltage value of the secondary battery at the first time; and the second time at the second time. A resistance value calculating step for calculating the internal resistance value of the secondary battery based on the current value and the voltage value of the secondary battery, and a deterioration status of the secondary battery based on the internal resistance value of the secondary battery. Battery deterioration status judgment Comprising the step, and in the time detection step, the magnitude of the rate of change of the measured values to detect the time is equal to or less than the predetermined change rate as candidates for the second time, the candidate of the second time In the past, the magnitude of the change rate of the measurement value is less than or equal to a predetermined change rate, and the magnitude of the change amount of the measurement value between the candidate for the second time The first time and the second time are detected by detecting a time at which is equal to or greater than a predetermined change amount as the first time .
また、本発明のさらにもう一つの態様によるプログラムは、電池劣化判定装置としてのコンピュータに、二次電池の電流値または電圧値の少なくとも一方である測定値の変化率の大きさが所定の変化率以下となっている第１時刻、および、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ前記第１時刻との間における前記測定値の変化量の大きさが所定の変化量以上となっている第２時刻を検出する時刻検出ステップと、前記第１時刻における前記二次電池の電流値および電圧値と前記第２時刻における前記二次電池の電流値および電圧値とに基づいて、当該二次電池の内部抵抗値を算出する抵抗値算出ステップと、前記二次電池の内部抵抗値に基づいて、当該二次電池の劣化状況を判定する電池劣化状況判定ステップと、を実行させ、前記時刻検出ステップでは、前記測定値の変化率の大きさが所定の変化率以下となっている時刻を前記第２時刻の候補として検出させ、当該第２時刻の候補よりも過去の時刻であって、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ、前記第２時刻の候補との間における前記測定値の変化量の大きさが所定の変化量以上となっている時刻を前記第１時刻として検出することで、前記第１時刻および前記第２時刻を検出させるためのプログラムである。 According to still another aspect of the present invention, there is provided a program for a computer as a battery deterioration determination device, wherein a change rate of a measured value that is at least one of a current value or a voltage value of a secondary battery is a predetermined change rate. The first time that is below, and the magnitude of the change rate of the measurement value is equal to or less than a predetermined change rate, and the magnitude of the change amount of the measurement value between the first time and the first time is A time detection step of detecting a second time that is greater than or equal to a predetermined amount of change; a current value and a voltage value of the secondary battery at the first time; and a current value and a voltage of the secondary battery at the second time A resistance value calculating step of calculating an internal resistance value of the secondary battery based on the value, and a battery deterioration status determining step of determining a deterioration status of the secondary battery based on the internal resistance value of the secondary battery When It was executed, and in the time detection step, the time the magnitude of the rate of change of the measured value is less than or equal to a predetermined rate of change is detected as a candidate of the second time, than the candidate of the second time past The change rate of the measurement value is equal to or less than a predetermined change rate, and the change amount of the measurement value with respect to the second time candidate is a predetermined value. This is a program for detecting the first time and the second time by detecting a time that is not less than the amount of change as the first time .
Claims (6)
前記第１時刻における前記二次電池の電流値および電圧値と前記第２時刻における前記二次電池の電流値および電圧値とに基づいて、当該二次電池の内部抵抗値を算出する抵抗値算出部と、
前記二次電池の内部抵抗値に基づいて、当該二次電池の劣化状況を判定する電池劣化状況判定部と、
を具備し、
前記時刻検出部は、前記測定値の変化率の大きさが所定の変化率以下となっている時刻を前記第２時刻の候補として検出し、当該第２時刻の候補よりも過去の時刻であって、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ、前記第２時刻の候補との間における前記測定値の変化量の大きさが所定の変化量以上となっている時刻を前記第１時刻として検出することで、前記第１時刻および前記第２時刻を検出することを特徴とする電池劣化判定装置。 The first time when the magnitude of the change rate of the measured value that is at least one of the current value or the voltage value of the secondary battery is equal to or less than the predetermined change rate, and the magnitude of the change rate of the measured value is a predetermined value A time detection unit that detects a second time that is equal to or less than a change rate and has a magnitude of a change amount of the measured value between the first time and a predetermined change amount;
Resistance value calculation for calculating the internal resistance value of the secondary battery based on the current value and voltage value of the secondary battery at the first time and the current value and voltage value of the secondary battery at the second time And
A battery deterioration state determination unit for determining a deterioration state of the secondary battery based on the internal resistance value of the secondary battery;
Equipped with,
The time detection unit detects a time when the magnitude of the change rate of the measured value is equal to or less than a predetermined change rate as a candidate for the second time, and is a time that is earlier than the candidate for the second time. In addition, the magnitude of the change rate of the measurement value is equal to or less than a predetermined change rate, and the magnitude of the change amount of the measurement value with respect to the second time candidate is equal to or greater than the predetermined change amount. The battery deterioration determination device , wherein the first time and the second time are detected by detecting the current time as the first time .
前記抵抗値算出部は、前記時刻検出部が検出した前記第１時刻と前記第２時刻との組み合わせ毎に前記二次電池の内部抵抗値を算出して、得られた内部抵抗値の平均値を求め、前記電池劣化状況判定部は、前記抵抗値算出部が求めた前記内部抵抗値の平均値に基づいて、前記二次電池の劣化状況を判定する、
ことを特徴とする請求項１に記載の電池劣化判定装置。 The time detection unit detects a plurality of combinations of the first time and the second time,
The resistance value calculation unit calculates an internal resistance value of the secondary battery for each combination of the first time and the second time detected by the time detection unit, and an average value of the obtained internal resistance values The battery deterioration state determination unit determines the deterioration state of the secondary battery based on an average value of the internal resistance values obtained by the resistance value calculation unit,
The battery deterioration determination device according to claim 1.
前記第１時刻における前記二次電池の電流値および電圧値と前記第２時刻における前記二次電池の電流値および電圧値とに基づいて、当該二次電池の内部抵抗値を算出する抵抗値算出部と、
を具備し、
前記時刻検出部は、前記測定値の変化率の大きさが所定の変化率以下となっている時刻を前記第２時刻の候補として検出し、当該第２時刻の候補よりも過去の時刻であって、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ、前記第２時刻の候補との間における前記測定値の変化量の大きさが所定の変化量以上となっている時刻を前記第１時刻として検出することで、前記第１時刻および前記第２時刻を検出することを特徴とする抵抗値算出装置。 The first time when the magnitude of the change rate of the measured value that is at least one of the current value or the voltage value of the secondary battery is equal to or less than the predetermined change rate, and the magnitude of the change rate of the measured value is a predetermined value A time detection unit that detects a second time that is equal to or less than a change rate and has a magnitude of a change amount of the measured value between the first time and a predetermined change amount;
Resistance value calculation for calculating the internal resistance value of the secondary battery based on the current value and voltage value of the secondary battery at the first time and the current value and voltage value of the secondary battery at the second time And
Equipped with,
The time detection unit detects a time when the magnitude of the change rate of the measured value is equal to or less than a predetermined change rate as a candidate for the second time, and is a time that is earlier than the candidate for the second time. In addition, the magnitude of the change rate of the measurement value is equal to or less than a predetermined change rate, and the magnitude of the change amount of the measurement value with respect to the second time candidate is equal to or greater than the predetermined change amount. The resistance value calculating device is characterized in that the first time and the second time are detected by detecting the current time as the first time .
二次電池の電流値または電圧値の少なくとも一方である測定値の変化率の大きさが所定の変化率以下となっている第１時刻、および、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ前記第１時刻との間における前記測定値の変化量の大きさが所定の変化量以上となっている第２時刻を検出する時刻検出ステップと、
前記第１時刻における前記二次電池の電流値および電圧値と前記第２時刻における前記二次電池の電流値および電圧値とに基づいて、当該二次電池の内部抵抗値を算出する抵抗値算出ステップと、
前記二次電池の内部抵抗値に基づいて、当該二次電池の劣化状況を判定する電池劣化状況判定ステップと、
を具備し、
前記時刻検出ステップでは、前記測定値の変化率の大きさが所定の変化率以下となっている時刻を前記第２時刻の候補として検出し、当該第２時刻の候補よりも過去の時刻であって、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ、前記第２時刻の候補との間における前記測定値の変化量の大きさが所定の変化量以上となっている時刻を前記第１時刻として検出することで、前記第１時刻および前記第２時刻を検出することを特徴とする電池劣化判定方法。 A battery deterioration determination method for a battery deterioration determination device,
The first time when the magnitude of the change rate of the measured value that is at least one of the current value or the voltage value of the secondary battery is equal to or less than the predetermined change rate, and the magnitude of the change rate of the measured value is a predetermined value A time detection step of detecting a second time that is equal to or less than a change rate and has a magnitude of a change amount of the measurement value between the first time and a predetermined change amount;
Resistance value calculation for calculating the internal resistance value of the secondary battery based on the current value and voltage value of the secondary battery at the first time and the current value and voltage value of the secondary battery at the second time Steps,
A battery deterioration state determination step for determining a deterioration state of the secondary battery based on the internal resistance value of the secondary battery;
Equipped with,
In the time detection step, a time at which the magnitude of the change rate of the measured value is equal to or less than a predetermined change rate is detected as a candidate for the second time, and is a time that is earlier than the candidate for the second time. In addition, the magnitude of the change rate of the measurement value is equal to or less than a predetermined change rate, and the magnitude of the change amount of the measurement value with respect to the second time candidate is equal to or greater than the predetermined change amount. A battery deterioration determination method , wherein the first time and the second time are detected by detecting the time when the first time is detected as the first time .
二次電池の電流値または電圧値の少なくとも一方である測定値の変化率の大きさが所定の変化率以下となっている第１時刻、および、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ前記第１時刻との間における前記測定値の変化量の大きさが所定の変化量以上となっている第２時刻を検出する時刻検出ステップと、
前記第１時刻における前記二次電池の電流値および電圧値と前記第２時刻における前記二次電池の電流値および電圧値とに基づいて、当該二次電池の内部抵抗値を算出する抵抗値算出ステップと、
前記二次電池の内部抵抗値に基づいて、当該二次電池の劣化状況を判定する電池劣化状況判定ステップと、
を実行させ、
前記時刻検出ステップでは、前記測定値の変化率の大きさが所定の変化率以下となっている時刻を前記第２時刻の候補として検出させ、当該第２時刻の候補よりも過去の時刻であって、前記測定値の変化率の大きさが所定の変化率以下となっており、かつ、前記第２時刻の候補との間における前記測定値の変化量の大きさが所定の変化量以上となっている時刻を前記第１時刻として検出することで、前記第１時刻および前記第２時刻を検出させるためのプログラム。 To a computer as a battery deterioration determination device,
The first time when the magnitude of the change rate of the measured value that is at least one of the current value or the voltage value of the secondary battery is equal to or less than the predetermined change rate, and the magnitude of the change rate of the measured value is a predetermined value A time detection step of detecting a second time that is equal to or less than a change rate and has a magnitude of a change amount of the measurement value between the first time and a predetermined change amount;
Resistance value calculation for calculating the internal resistance value of the secondary battery based on the current value and voltage value of the secondary battery at the first time and the current value and voltage value of the secondary battery at the second time Steps,
A battery deterioration state determination step for determining a deterioration state of the secondary battery based on the internal resistance value of the secondary battery;
Was executed,
In the time detection step, a time at which the magnitude of the change rate of the measurement value is equal to or less than a predetermined change rate is detected as a candidate for the second time, and is a time that is earlier than the candidate for the second time. In addition, the magnitude of the change rate of the measurement value is equal to or less than a predetermined change rate, and the magnitude of the change amount of the measurement value with respect to the second time candidate is equal to or greater than the predetermined change amount. A program for detecting the first time and the second time by detecting the current time as the first time .
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| JP2012220242A JP5960017B2 (en) | 2012-10-02 | 2012-10-02 | Battery deterioration determination device, resistance value calculation device, battery deterioration determination method, and program |
| PCT/JP2013/076400 WO2014054548A1 (en) | 2012-10-02 | 2013-09-27 | Battery deterioration evaluation device, resistance value calculation device, battery deterioration evaluating method and program |
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| JP2012220242A JP5960017B2 (en) | 2012-10-02 | 2012-10-02 | Battery deterioration determination device, resistance value calculation device, battery deterioration determination method, and program |
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| JP5939269B2 (en) * | 2014-03-19 | 2016-06-22 | トヨタ自動車株式会社 | Battery deterioration judgment device |
| DE112016001423T8 (en) | 2015-03-27 | 2018-03-08 | Gs Yuasa International Ltd. | Non-aqueous electrolyte power storage element deterioration detector, power storage device, non-aqueous electrolyte power storage element deterioration detection system, and non-aqueous electrolyte power storage element deterioration detection method |
| JP6504544B2 (en) * | 2015-10-26 | 2019-04-24 | パナソニックＩｐマネジメント株式会社 | Control method of display device and display system |
| DE102017208770B4 (en) * | 2017-05-23 | 2019-03-28 | Audi Ag | Method for checking a battery condition and tester for checking a battery condition |
| KR102261481B1 (en) | 2017-10-30 | 2021-06-07 | (주)엘지에너지솔루션 | Apparatus and method for estimating state of health of battery |
| JP7069837B2 (en) * | 2018-03-02 | 2022-05-18 | トヨタ自動車株式会社 | Battery diagnostic equipment and method |
| JP7003751B2 (en) * | 2018-03-12 | 2022-01-21 | トヨタ自動車株式会社 | Battery diagnostic device and battery diagnostic method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3230048B2 (en) * | 1997-01-14 | 2001-11-19 | 富士通電装株式会社 | Internal resistance measurement method |
| JP5297751B2 (en) * | 2008-10-03 | 2013-09-25 | 株式会社日立製作所 | Power supply control device, vehicle travel control system, and storage battery deterioration state detection method |
-
2012
- 2012-10-02 JP JP2012220242A patent/JP5960017B2/en not_active Expired - Fee Related
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2013
- 2013-09-27 WO PCT/JP2013/076400 patent/WO2014054548A1/en active Application Filing
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