Battery DOD Diagnosing Apparatus and Method
US-2022317197-A1 · Oct 6, 2022 · US
Apparatus and method for diagnosing battery
US12455319B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12455319-B2 |
| Application number | US-202318881368-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 1, 2023 |
| Priority date | Nov 1, 2022 |
| Publication date | Oct 28, 2025 |
| Grant date | Oct 28, 2025 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An apparatus for diagnosing a battery includes a data obtaining unit configured to obtain battery information including voltage and current of a battery during a charging cycle of the battery; and a control unit configured to calculate a constant current charging capacity ratio and a constant voltage charging capacity ratio during the charging cycle based on the battery information, and diagnose a state of the battery based on the constant current charging capacity ratio and the constant voltage charging capacity ratio.
First claim
Opening claim text (preview).
What is claimed is: 1 . An apparatus for diagnosing a battery, comprising: a control unit configured to: determine a charging total capacity, obtain each of a constant current charging capacity and a constant voltage charging capacity from the charging total capacity, calculate a constant current charging capacity ratio and a constant voltage charging capacity ratio based on battery information including voltage and current of a battery during a charging cycle of the battery, wherein the constant current charging capacity ratio and the constant voltage charging capacity ratio are based on the charging total capacity, the constant current charging capacity and the constant voltage charging capacity, and diagnose a state of the battery based on the constant current charging capacity ratio and the constant voltage charging capacity ratio. 2 . The apparatus for diagnosing a battery according to claim 1 , wherein the control unit is configured to diagnose the state of the battery based on an increase or decrease of each of the constant current charging capacity ratio and the constant voltage charging capacity ratio. 3 . The apparatus for diagnosing a battery according to claim 2 , wherein the control unit is configured to diagnose the state of the battery as a negative electrode stabilization state in response to the constant current charging capacity ratio increasing and the constant voltage charging capacity ratio decreasing. 4 . The apparatus for diagnosing a battery according to claim 3 , wherein the control unit is configured to maintain a charging cut-off condition of the battery in response to the state of the battery being diagnosed as the negative electrode stabilization state. 5 . The apparatus for diagnosing a battery according to claim 2 , wherein the control unit is configured to diagnose the state of the battery as a deterioration state in response to the constant current charging capacity ratio decreasing and the constant voltage charging capacity ratio increasing. 6 . The apparatus for diagnosing a battery according to claim 1 , wherein the control unit is configured to calculate the constant current charging capacity ratio and the constant voltage charging capacity ratio in response to the charging total capacity of the battery decreasing during the charging cycle of the battery. 7 . The apparatus for diagnosing a battery according to claim 6 , wherein the control unit is configured to: repeatedly determine a charging total capacity for multiple charging cycles of the battery, in each given charging cycle, compare the charging total capacity of the given charging cycle with the charging total capacity of a previous charging cycle, and determine whether to calculate the constant current charging capacity ratio and the constant voltage charging capacity ratio for the given charging cycle based on the comparison of the charging total capacity of the given charging cycle with the charging total capacity of the previous charging cycle. 8 . The apparatus for diagnosing a battery according to claim 1 , wherein the control unit is configured to: repeatedly determine a charging total capacity for multiple charging cycles of the battery, and in each given charging cycle, compare the charging total capacity of the given charging cycle with the charging total capacity of a previous charging cycle in response to the given charging cycle being included within a preset criterion cycle section. 9 . A battery pack, comprising the apparatus for diagnosing a battery according to claim 1 . 10 . A method for diagnosing a battery, comprising: determining a charging total capacity; obtaining each of a constant current charging capacity and a constant voltage charging capacity from the charging total capacity; calculating a constant current charging capacity ratio and a constant voltage charging capacity ratio based on battery information including voltage and current of a battery during a charging cycle of the battery, wherein the constant current charging capacity ratio and the constant voltage charging capacity ratio are based on the charging total capacity, the constant current charging capacity and the constant voltage charging capacity; and diagnosing a state of the battery based on the constant current charging capacity ratio and the constant voltage charging capacity ratio.
Assignees
Inventors
Classifications
combining voltage and current measurements · CPC title
- G01R31/396Primary
Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery · CPC title
Determining battery ageing or deterioration, e.g. state of health · CPC title
- G01R31/367Primary
Software therefor, e.g. for battery testing using modelling or look-up tables · CPC title
Energy storage using batteries · CPC title
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Frequently asked questions
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- What does patent US12455319B2 cover?
- An apparatus for diagnosing a battery includes a data obtaining unit configured to obtain battery information including voltage and current of a battery during a charging cycle of the battery; and a control unit configured to calculate a constant current charging capacity ratio and a constant voltage charging capacity ratio during the charging cycle based on the battery information, and diagnos…
- Who is the assignee on this patent?
- Lg Energy Solution Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01R31/396. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Oct 28 2025 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).