Method and apparatus for correcting state of charge
US-11536772-B2 · Dec 27, 2022 · US
Secondary battery system
US2024106257A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024106257-A1 |
| Application number | US-202117913781-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 24, 2021 |
| Priority date | Mar 30, 2020 |
| Publication date | Mar 28, 2024 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A secondary battery system according to one aspect of the present disclosure comprises: an electric load connected to a secondary battery; and a control device which, in an SOC-dV/dQ curve in which the dV/dQ that is the differential value of the change amount dV of the voltage V of the secondary battery with respect to the change amount dQ of the capacity Q of the secondary battery is plotted with respect to the charged state (SOC) expressed as a percentage of the capacity Q with respect to the fully charged capacity of the secondary battery, when at least one peak top SOC range including the peak top charge rate is set, and charging or discharging stops in the peak top SOC range, discharges the secondary battery by the electric load to avoid the peak top SOC range and ends charging or discharging of the secondary battery.
First claim
Opening claim text (preview).
1 . A secondary battery system comprising: a secondary battery having an electrode assembly in which a positive electrode plate and a negative electrode plate are layered with a separator therebetween, and a non-aqueous electrolyte; an electric load connected to the secondary battery; and a control device that completes, when at least one peak top SOC range which includes a state of charge (SOC) which is a peak top is set on an SOC-dV/dQ curve on which dV/dQ, which is a differential value of an amount of change dV of a voltage V of the secondary battery with respect to an amount of change dQ of a capacity Q of the secondary battery, is plotted against the SOC which is expressed as a percentage of the capacity Q with respect to a capacity of the secondary battery in a fully charged state, and when charging or discharging is to be stopped in the peak top SOC range, the charging or the discharging of the secondary battery while avoiding the peak top SOC range by discharging the secondary battery with the electric load. 2 . A secondary battery system comprising: a secondary battery having an electrode assembly in which a positive electrode plate and a negative electrode plate are layered with a separator therebeween, and a non-aqueous electrolyte; an auxiliary battery connected to the secondary battery; and a control device that completes, when at least one peak top SOC range which includes a state of charge (SOC) which is a peak top is set on an SOC-dV/dQ curve on which dV/dQ, which is a differential value of an amount of change dV of a voltage V of the secondary battery with respect to an amount of change dQ of a capacity Q of the secondary battery, is plotted against the SOC which is expressed as a percentage of the capacity Q with respect to a capacity of the secondary battery in a fully charged state, and when charging or discharging is to be stopped in the peak top SOC range, the charging or the discharging of the secondary battery while avoiding the peak top SOC range by charging the secondary battery with the auxiliary battery.
Assignees
Inventors
Classifications
in response to battery voltage gradient · CPC title
- H02J7/82Primary
Control of state of charge [SOC] · CPC title
- H02J7/953Primary
in response to charge current gradient · CPC title
the cycle being controlled or terminated in response to electric parameters · CPC title
- H02J7/00718Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US2024106257A1 cover?
- A secondary battery system according to one aspect of the present disclosure comprises: an electric load connected to a secondary battery; and a control device which, in an SOC-dV/dQ curve in which the dV/dQ that is the differential value of the change amount dV of the voltage V of the secondary battery with respect to the change amount dQ of the capacity Q of the secondary battery is plotted w…
- Who is the assignee on this patent?
- Sanyo Electric Co
- What technology area does this patent fall under?
- Primary CPC classification H02J7/82. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Mar 28 2024 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 11 related publications on this page (citations in our corpus or others sharing the same primary CPC).