WO2025058609A1 - A system for estimating battery state of health - Google Patents
A system for estimating battery state of health Download PDFInfo
- Publication number
- WO2025058609A1 WO2025058609A1 PCT/TR2024/051073 TR2024051073W WO2025058609A1 WO 2025058609 A1 WO2025058609 A1 WO 2025058609A1 TR 2024051073 W TR2024051073 W TR 2024051073W WO 2025058609 A1 WO2025058609 A1 WO 2025058609A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery cell
- foam layer
- thickness
- pressure
- health
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/3865—Arrangements for measuring battery or accumulator variables related to manufacture, e.g. testing after manufacture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a system for estimating the state of health of a battery cell by means of the gas pressure and amount formed at the cell level.
- the Chinese patent document no. CN114089191A discloses an estimation method for a lithium ion battery health condition.
- the invention which is subject to the said Chinese patent document comprises establishing a composite lithium ion battery electrochemical model based on an enhanced single particle model, and giving a dynamic quality and control equation; in the experimental period of a cyclic aging experiment, calculating the discharge capacity based on a Nelder-Mead algorithm, and calibrating the composite lithium ion battery electrochemical model by using each microcirculation charging period in the cyclic aging experiment; and establishing a relation equation between the ampere-hour throughput Ah and the discharge capacity of a lithium ion battery.
- the method has the beneficial effects that an enhanced single particle model (eSPM) is introduced, the parameter characteristics directly related to the SOH of a single battery are extracted, and the model parameter characteristics are obtained by using the real-time charging working conditions.
- eSPM enhanced single particle model
- An objective of the present invention is to realize a system intended for estimating the state of health of a battery cell by means of the gas pressure and amount formed at the cell level.
- Another objective of the present invention is to realize a system intended for shortening the test period of the state of health of a battery cell considerably, carrying out the same detection in approximately a month, and estimating the battery life without even performing a test by means of certain assumptions in the product development process.
- Figure 1 is a schematic view of the inventive system.
- the inventive system (1) developed for estimating the state of health of a battery cell by means of the gas pressure and amount formed at the cell level comprises at least one battery cell (2) which is configured to store electrical energy as chemical energy and to provide it as electrical energy when needed; at least one foam layer (3) which is configured to be positioned on the battery cell (2); at least one plate (4) which is configured to keep the battery cell (2) and the foam layer (3) fixed; at least one compression member (5) which is configured to compress the structure of the battery cell (2) and the foam layer (3) located between the plates (4); at least one measuring device for thickness change (6) which is configured to measure the thickness change, upon the compression member (5) compresses the related layers; at least one processor (7) which is configured to detect the battery life by measuring the intracellular pressure, upon the pressure-cycle relationship is detected linearly and ideal/real gas laws are used by using pressurethickness, thickness-cycle curves.
- the battery cell (2) included in the inventive system (1) is configured to provide chemical reaction between two electrodes: graphite anode (negative electrode), metal oxide cation (positive electrode) and to create an electric current as a result of the ionic exchange reaction at the cathode while the anode is eroded in electrolysis.
- the battery cell (2) is configured to store electrical energy as chemical energy and to provide it as electrical energy when needed.
- the foam layer (3) included in the inventive system (1) is produced by swelling and sticking together closed-pore polystyrene particles, is a thermal insulation material consisting of 98% still dry air, and is configured to provide high thermal insulation.
- the foam layer (3) is configured to be positioned on the battery cell (2) to protect it.
- the plate (4) included in the inventive system (1) is configured to keep the battery cell (2) and the foam layer (3) fixed.
- the compression member (5) included in the inventive system (1) is configured to compress the structure of the battery cell (2) and the foam layer (3) located between the plates (4).
- the testing period is shortened as much as 90%, it is ensured that the same detection can be carried out in a period of approximately a month and the estimation of battery life can be estimated without even performing a test via certain assumptions in the product development process by means of the technique used in this method.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to a system (1) for estimating the state of health of a battery cell by means of the gas pressure and amount formed at the cell level.
Description
DESCRIPTION
A SYSTEM FOR ESTIMATING BATTERY STATE OF HEALTH
Technical Field
The present invention relates to a system for estimating the state of health of a battery cell by means of the gas pressure and amount formed at the cell level.
Background of the Invention
Nowadays, correct estimation of the state of health of lithium-ion batteries and finding out relation to charge-discharge cycle enable users to make intelligent replacement decisions and to reduce economic losses. Estimation accuracy of the state of health is related to many factors such as usage time, ambient temperature, charge and discharge rate. Therefore, it becomes a great challenge to properly extract the state of health characteristics from these factors. It is required to find an indirect and efficient method in order to extract battery characteristics and improve accuracy of estimation of the state of health effectively. Today, the life expectancy of a battery cell can be detected by means of long tests that may last up to a year
Therefore, considering the studies and the deficiencies in the state of the art, it is understood that there is need for a system for shortening the test period of the state of health of a battery cell considerably, carrying out the same detection in approximately a month, and estimating the battery life without even performing a test by means of certain assumptions in the product development process.
The Chinese patent document no. CN114089191A, an application included in the state of the art, discloses an estimation method for a lithium ion battery health condition. The invention which is subject to the said Chinese patent document
comprises establishing a composite lithium ion battery electrochemical model based on an enhanced single particle model, and giving a dynamic quality and control equation; in the experimental period of a cyclic aging experiment, calculating the discharge capacity based on a Nelder-Mead algorithm, and calibrating the composite lithium ion battery electrochemical model by using each microcirculation charging period in the cyclic aging experiment; and establishing a relation equation between the ampere-hour throughput Ah and the discharge capacity of a lithium ion battery. The method has the beneficial effects that an enhanced single particle model (eSPM) is introduced, the parameter characteristics directly related to the SOH of a single battery are extracted, and the model parameter characteristics are obtained by using the real-time charging working conditions. The feasibility and effectiveness of the SOH estimation method are verified for the cyclic aging experiment.
Summary of the Invention
An objective of the present invention is to realize a system intended for estimating the state of health of a battery cell by means of the gas pressure and amount formed at the cell level.
Another objective of the present invention is to realize a system intended for shortening the test period of the state of health of a battery cell considerably, carrying out the same detection in approximately a month, and estimating the battery life without even performing a test by means of certain assumptions in the product development process.
Detailed Description of the Invention
“System for Estimating Battery State of Health” realized to fulfd the objectives of the present invention is shown in the figures attached, in which:
Figure 1 is a schematic view of the inventive system.
The components illustrated in the figure are individually numbered, where the numbers refer to the following:
1. System
2. Battery Cell
3. Foam Layer
4. Plate
5. Compression Member
6. Measuring Device for Thickness Change
7. Processor
The inventive system (1) developed for estimating the state of health of a battery cell by means of the gas pressure and amount formed at the cell level comprises at least one battery cell (2) which is configured to store electrical energy as chemical energy and to provide it as electrical energy when needed; at least one foam layer (3) which is configured to be positioned on the battery cell (2); at least one plate (4) which is configured to keep the battery cell (2) and the foam layer (3) fixed; at least one compression member (5) which is configured to compress the structure of the battery cell (2) and the foam layer (3) located between the plates (4); at least one measuring device for thickness change (6) which is configured to measure the thickness change, upon the compression member (5) compresses the related layers; at least one processor (7) which is configured to detect the battery life by measuring the intracellular pressure, upon the pressure-cycle relationship is detected linearly and ideal/real gas laws are used by using pressurethickness, thickness-cycle curves.
The battery cell (2) included in the inventive system (1) is configured to provide chemical reaction between two electrodes: graphite anode (negative electrode), metal oxide cation (positive electrode) and to create an electric current as a result of the ionic exchange reaction at the cathode while the anode is eroded in electrolysis. The battery cell (2) is configured to store electrical energy as chemical energy and to provide it as electrical energy when needed.
The foam layer (3) included in the inventive system (1) is produced by swelling and sticking together closed-pore polystyrene particles, is a thermal insulation material consisting of 98% still dry air, and is configured to provide high thermal insulation. The foam layer (3) is configured to be positioned on the battery cell (2) to protect it.
The plate (4) included in the inventive system (1) is configured to keep the battery cell (2) and the foam layer (3) fixed.
The compression member (5) included in the inventive system (1) is configured to compress the structure of the battery cell (2) and the foam layer (3) located between the plates (4).
The measuring device for thickness change (6) included in the inventive system (1) is configured to measure the thickness change, upon the compression member (5) compresses the related layers.
The processor (7) included in the inventive system (1) is configured to measure the internal pressure in the battery cell (2) and to detect the state of health of the battery life, upon the pressure-cycle relationship is detected linearly and ideal/real gas laws are used by using pressure-thickness, thickness-cycle curves.
Industrial Application of the Invention
The foam layer (3) included the inventive system (1) is positioned to protect the battery cell (2); the plate (4) keeps the battery cell (2) and the foam layer (3) fixed; the compression member (5) compresses the structure of the battery cell (2) and the foam layer (3) located between the plates (4); the measuring device for thickness change (6) measures the thickness change, upon the compression member (5) compresses the related layers; the processor (7) measures the internal pressure in the battery cell (2) and detects the state of health of the battery life, upon the pressure-cycle relationship is detected linearly and ideal/real gas laws are used by using pressure-thickness, thickness-cycle curves. Thereby, the testing period is shortened as much as 90%, it is ensured that the same detection can be carried out in a period of approximately a month and the estimation of battery life can be estimated without even performing a test via certain assumptions in the product development process by means of the technique used in this method. Within these basic concepts; it is possible to develop various embodiments of the inventive “A System (1) for Estimating Battery State of Health”; the invention cannot be limited to examples disclosed herein and it is essentially according to claims.
Claims
1. A system (1) developed for estimating the state of health of a battery cell by means of the gas pressure and amount formed at the cell level; characterized by at least one battery cell (2) which is configured to store electrical energy as chemical energy and to provide it as electrical energy when needed;
- at least one foam layer (3) which is configured to be positioned on the battery cell (2);
- at least one plate (4) which is configured to keep the battery cell (2) and the foam layer (3) fixed; at least one compression member (5) which is configured to compress the structure of the battery cell (2) and the foam layer (3) located between the plates (4); at least one measuring device for thickness change (6) which is configured to measure the thickness change, upon the compression member (5) compresses the related layers;
- at least one processor (7) which is configured to detect the battery life by measuring the intracellular pressure, upon the pressurecycle relationship is detected linearly and ideal/real gas laws are used by using pressure-thickness, thickness-cycle curves.
2. A system (1) according to Claim 1; characterized by the battery cell (2) which (2) is configured to provide chemical reaction between two electrodes: graphite anode (negative electrode), metal oxide cation (positive electrode) and to create an electric current as a result of the ionic exchange reaction at the cathode while the anode is eroded in electrolysis.
3. A system (1) according to Claim 1 or 2; characterized by the battery cell (2) which is configured to store electrical energy as chemical energy and to provide it as electrical energy when needed.
4. A system (1) according to any of the preceding claims; characterized by the foam layer (3) which is produced by swelling and sticking together closed-pore polystyrene particles, is a thermal insulation material consisting of 98% still dry air, and is configured to provide high thermal insulation.
5. A system (1) according to any of the preceding claims; characterized by the foam layer (3) which is configured to be positioned on the battery cell (2) to protect it.
6. A system (1) according to any of the preceding claims; characterized by the plate (4) which is configured to keep the battery cell (2) and the foam layer (3) fixed.
7. A system (1) according to any of the preceding claims; characterized by the compression member (5) which is configured to compress the structure of the battery cell (2) and the foam layer (3) located between the plates (4).
8. A system (1) according to any of the preceding claims; characterized by the measuring device for thickness change (6) which is configured to measure the thickness change, upon the compression member (5) compresses the related layers.
9. A system (1) according to any of the preceding claims; characterized by the processor (7) which is configured to measure the internal pressure in the battery cell (2) and to detect the state of health of the battery life, upon
the pressure-cycle relationship is detected linearly and ideal/real gas laws are used by using pressure-thickness, thickness-cycle curves.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR2023/011365 TR2023011365A2 (en) | 2023-09-13 | A SYSTEM THAT PROVIDES PREDICTION OF BATTERY HEALTH STATUS | |
| TR2023011365 | 2023-09-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025058609A1 true WO2025058609A1 (en) | 2025-03-20 |
Family
ID=95022452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2024/051073 Pending WO2025058609A1 (en) | 2023-09-13 | 2024-09-13 | A system for estimating battery state of health |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2025058609A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106471385A (en) * | 2014-07-10 | 2017-03-01 | 东洋橡胶工业株式会社 | Deterioration diagnosis method and deterioration diagnosis system of sealed secondary battery |
| US20170077561A1 (en) * | 2014-06-30 | 2017-03-16 | Toyo Tire & Rubber Co., Ltd. | Method for determining abnormality in assembled battery, and device for determining abnormality in assembled battery |
| CN215525873U (en) * | 2021-03-30 | 2022-01-14 | 湖北亿纬动力有限公司 | A jig for testing batteries |
-
2024
- 2024-09-13 WO PCT/TR2024/051073 patent/WO2025058609A1/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170077561A1 (en) * | 2014-06-30 | 2017-03-16 | Toyo Tire & Rubber Co., Ltd. | Method for determining abnormality in assembled battery, and device for determining abnormality in assembled battery |
| CN106471385A (en) * | 2014-07-10 | 2017-03-01 | 东洋橡胶工业株式会社 | Deterioration diagnosis method and deterioration diagnosis system of sealed secondary battery |
| CN215525873U (en) * | 2021-03-30 | 2022-01-14 | 湖北亿纬动力有限公司 | A jig for testing batteries |
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