Battery state detection device
US-2016069964-A1 · Mar 10, 2016 · US
Battery state estimating apparatus
US2018259587A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018259587-A1 |
| Application number | US-201815903351-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 23, 2018 |
| Priority date | Mar 10, 2017 |
| Publication date | Sep 13, 2018 |
| Grant date | — |
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Abstract
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A battery state estimating apparatus is provided with: a voltage detector configured to detect a voltage between a positive electrode and a negative electrode of a battery; an impedance detector configured to detect an impedance of the battery; a first estimator configured to estimate a first temporary value of a charge amount of the battery; a second estimator configured to estimate a second temporary value of the charge amount of the battery; and a determinator configured (i) to determine that the first temporary value is the charge amount of the battery if the first temporary value or the second temporary value is out of a predetermined range, and (ii) to determine that the second temporary value, or a corrected value of the first temporary value is the charge amount of the battery if the first temporary value or the second temporary value is within the predetermined range.
First claim
Opening claim text (preview).
What is claimed is: 1 . A battery state estimating apparatus comprising: a voltage detector configured to detect a voltage between a positive electrode and a negative electrode of a battery having a plurality of electrode bodies, which are connected in series; an impedance detector configured to detect an impedance of the battery; a first estimator configured to estimate a first temporary value of a charge amount of the battery on the basis of the voltage of the battery detected by said voltage detector; a second estimator configured to estimate a second temporary value of the charge amount of the battery on the basis of the impedance of the battery detected by said impedance detector; and a determinator configured (i) to determine that the first temporary value is the charge amount of the battery if the first temporary value or the second temporary value is out of a predetermined range, and (ii) to determine that the second temporary value, or a corrected value of the first temporary value, which is corrected by using the second temporary value, is the charge amount of the battery if the first temporary value or the second temporary value is within the predetermined range. 2 . The battery state estimating apparatus according to claim 1 , wherein the predetermined range is a range in which a rate of change in the impedance of the battery with respect to the charge amount of the battery is greater than or equal to a predetermined value, or is a range in which a change tendency of the impedance of the battery is a predetermined tendency. 3 . The battery state estimating apparatus according to claim 1 , wherein second estimator is configured to estimate the second temporary value only if the first temporary value is within the predetermined range. 4 . The battery state estimating apparatus according to claim 1 , wherein the predetermined range is a range including a charge amount at which the battery is determined to be fully charged or fully discharged. 5 . The battery state estimating apparatus according to claim 1 , further comprising: a charger configured to perform a charge control of the battery; a first controller programmed to control said charger to stop the charge control if the charge amount of the battery determined by said determinator is a charge amount at which the battery is determined to be fully charged, during the charge control. 6 . The battery state estimating apparatus according to claims 1 , further comprising: a discharger configured to perform a discharge control of the battery; a second controller programmed to control said discharger to stop the discharge control if the charge amount of the battery determined by said determinator is a charge amount at which the battery is determined to be fully discharged, during the charge control.
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with means for correcting the measurement for temperature or ageing · CPC title
involving voltage measurements · CPC title
Control of state of charge [SOC] · CPC title
in response to temperature · CPC title
Detection of fully charged condition · CPC title
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- What does patent US2018259587A1 cover?
- A battery state estimating apparatus is provided with: a voltage detector configured to detect a voltage between a positive electrode and a negative electrode of a battery; an impedance detector configured to detect an impedance of the battery; a first estimator configured to estimate a first temporary value of a charge amount of the battery; a second estimator configured to estimate a second t…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02J7/96. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Sep 13 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).