Electrified vehicle and method of controlling same
US-2024424930-A1 · Dec 26, 2024 · US
Battery SOC estimation with automatic correction
US9108524B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9108524-B2 |
| Application number | US-201314059751-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 22, 2013 |
| Priority date | Oct 22, 2013 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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An embodiment contemplates a method of determining a state-of-charge of a battery for a vehicle. (a) An OCV is measured for a current vehicle ignition startup after ignition off for at least eight hours. (b) An SOC OCV is determined for the current vehicle ignition startup. (c) An SOC OCV — est is determined for a current vehicle ignition startup. (d) A determination is made whether the difference in the SOC OCV for the current startup and the SOC OCV est for the current startup is less than a predefined error bound using. Steps (a)-(d) is performed in response to the difference being greater than the predefined error; otherwise, determining an ignition-off current for the current vehicle ignition startup as a function of the SOC OCV of the current vehicle ignition startup and previous vehicle ignition startup, and a SOC based on current integration over time. Determining an SOC est of the current vehicle ignition startup using the processor.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of determining a state-of-charge of a battery for a vehicle, the vehicle being in a charging state when the engine is operating and a non-charging state when the engine is not operating, the method comprising the steps of: (a) measuring an open circuit voltage (OCV) for a current vehicle ignition startup using a voltmeter, wherein the current vehicle ignition start-up is performed after the vehicle is in the non-charging state for at least eight hou…
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Classifications
- B60L58/12Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- B60L11/1861Primary
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9108524B2 cover?
- An embodiment contemplates a method of determining a state-of-charge of a battery for a vehicle. (a) An OCV is measured for a current vehicle ignition startup after ignition off for at least eight hours. (b) An SOC OCV is determined for the current vehicle ignition startup. (c) An SOC OCV — est is determined for a current vehicle ignition startup. (d) A determination is made whether t…
- Who is the assignee on this patent?
- Gm Global Tech Operations Inc
- What technology area does this patent fall under?
- Primary CPC classification B60L58/12. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).