# US 2025/0085356 A1 · Apparatus for predicting battery lifetime and method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0085356 A1 - Document ID: US20250085356A1 - Status: Published application - Kind: A1 - Application number: 18/571,717 - Filed: 2022-11-22 - Published: 2025-03-13 - Earliest claimed: 2022-06-23 - Assignees: Hyosung Heavy Industries Corporation - Applicants: Hyosung Heavy Industries Corporation - Inventors: Byoung Choul KIM; Sang Hui PARK; Sung Chul JUNG - Web page: https://patentgrep.com/patent/US20250085356A1 ## CPC - G01R 31/392: Determining battery ageing or deterioration, e.g. state of health - G01R 31/36: Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] - G01R 31/367: Software therefor, e.g. for battery testing using modelling or look-up tables - G01R 31/374: with means for correcting the measurement for temperature or ageing - G01R 31/382: Arrangements for monitoring battery or accumulator variables, e.g. SoC - G01R 31/396: Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery - Y02E 60/10: Energy storage using batteries - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The present invention relates to an apparatus for predicting battery lifetime that may predict battery time more accurately by removing errors due to a characteristic of recovering temporary capacity happening intermittently from charge/discharge test data of a battery and a method thereof. The apparatus for predicting battery lifetime in accordance with the present invention comprises: a capacity recovery section-determining unit for determining a temporary capacity recovery section by analyzing charge/discharge test data of a battery; a trend analysis unit for creating alternative data based on test data before and after the temporary capacity recovery section determined by the capacity recovery section-determining unit, and analyzing trend of the test data by reflecting the alternative data; and a lifetime predicting unit for predicting lifetime of the battery based on data outputted from the trend analysis unit. ## Claims ### Claim 1 A battery lifetime predicting apparatus, comprising: a capacity recovery section-determining unit for determining a temporary capacity recovery section by analyzing charge/discharge test data of a battery; a trend analysis unit for creating alternative data based on test data before and after the temporary capacity recovery section determined by the capacity recovery section-determining unit, and analyzing trend of the test data by reflecting the alternative data; and a lifetime predicting unit for predicting lifetime of the battery based on data outputted from the trend analysis unit. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the capacity recovery section-determining unit determines a section where the charge/discharge test data of the battery is changed by at least a certain value as a capacity recovery section. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein the capacity recovery section-determining unit determines, as a temporary capacity recovery section, a section where change of the charge/discharge test data of the battery shows increment by at least 0.2% compared to the previous capacity. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein a method of the trend analysis unit creating alternative data based on the test data before and after the temporary capacity recovery section is one of methods of replacing the section with a previous trend line of the temporary capacity recovery section, replacing by applying a particle filter, and pulling and putting together a section after the temporary capacity recovery section except the temporary capacity recovery section. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the method of the trend analysis unit analyzing trend of the test data is one of methods of moving average depending on increase of charge/discharge cycles, moving average on differential data depending on increase of charge/discharge cycles, or moving average on log data depending on increase of charge/discharge cycles. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the lifetime predicting unit predicts the lifetime of the battery based on a semi-empirical aging model. ### Claim 7 A method of predicting battery lifetime, comprising steps of: a capacity recovery section-determining unit determining a temporary capacity recovery section by analyzing charge/discharge test data of a battery; a trend analysis unit creating alternative data based on test data before and after the temporary capacity recovery section, and analyzing trend of the test data by reflecting the alternative data; and a lifetime predicting unit predicting lifetime of the battery based on data outputted from the trend analysis unit. ### Claim 8 (depends on 7) The method of claim 7, wherein the capacity recovery section-determining unit determines a section where the charge/discharge test data of the battery is changed by at least a certain value as a capacity recovery section. ### Claim 9 (depends on 8) The method of claim 8, wherein the capacity recovery section-determining unit determines a section where change of the charge/discharge test data of the battery shows increment by at least 0.2% compared to the previous capacity as a temporary capacity recovery section. ### Claim 10 (depends on 7) The method of claim 7, wherein a method of the trend analysis unit creating alternative data based on the test data before and after the temporary capacity recovery section is one of methods of replacing the section with a previous trend line of the temporary capacity recovery section, replacing by applying a particle filter, and pulling and putting together a section after the temporary capacity recovery section except the temporary capacity recovery section.