Gas-liquid dynamic model-based accurate lithium-ion battery soc estimation method
US-2020158783-A1 · May 21, 2020 · US
Method and system for estimating open circuit voltage of Li-ion batteries with temperature input
US11307258B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11307258-B2 |
| Application number | US-201916960497-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 30, 2019 |
| Priority date | Feb 25, 2019 |
| Publication date | Apr 19, 2022 |
| Grant date | Apr 19, 2022 |
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Abstract
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A method and system for estimating open circuit voltage of lithium ion batteries with temperature input, that has the following steps: step 1 the undetermined equation for estimating open circuit voltage with temperature input is derived according to the gas-liquid dynamic model; step 2: the estimation equation parameters are identified according to the experimental data and put into the undetermined equation for estimating open circuit voltage in the step 1 to obtain a complete equation for estimating open circuit voltage; step 3: the method for estimating open circuit voltage with temperature input is designed according to the complete equation for estimating open circuit voltage.
First claim
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The invention claimed is: 1. A method for estimating open circuit voltage of lithium ion battery with temperature input, characterized in that, it comprises the following steps: step 1: deriving an undetermined equation for estimating the open circuit voltage with temperature input according to a gas-liquid dynamic model, and embedding the undetermined equation for estimating the open circuit voltage with temperature input into a single chip microcomputer of an open circuit voltage estimation module, wherein, according to an ideal gas state equation, a gas dissolution equilibrium equation and a Bernoulli equation, the undetermined equation for estimating the open circuit voltage is derived as follows: P 3 = ( P 2 - T 2 k 2 ) ( T 1 k 2 + P 1 ) - T 1 k 1 + ( T 1 k 2 + P 1 ) 2 ( T 2 k 2 + P 2 ) 2 + T 1 2 k 1 2 + 2 k 1 ( T 1 k 2 + P 1 ) ( T 1 T
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- G01R31/367Primary
Software therefor, e.g. for battery testing using modelling or look-up tables · CPC title
with means for correcting the measurement for temperature or ageing · CPC title
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- What does patent US11307258B2 cover?
- A method and system for estimating open circuit voltage of lithium ion batteries with temperature input, that has the following steps: step 1 the undetermined equation for estimating open circuit voltage with temperature input is derived according to the gas-liquid dynamic model; step 2: the estimation equation parameters are identified according to the experimental data and put into the undete…
- Who is the assignee on this patent?
- Univ Jiangsu
- What technology area does this patent fall under?
- Primary CPC classification G01R31/367. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 19 2022 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).