Patents by Inventor Wen-Chen Lih
Wen-Chen Lih has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11333711Abstract: The present invention discloses a method for rapidly estimating for a remaining capacity of a battery, comprising performing a constant current charge to the battery in a first period, instantly capturing a voltage/temperature of the battery in a frequency, and generating a voltage-time graph; after leaving the battery along for a second period, instantly capturing the voltage/temperature of the battery in the frequency; calculating a voltage rising rate during the first period; calculating a voltage drop rate during a leaving-along period; calculating a critical sample time; applying the critical sample time, and comparing the voltage-time graph measured in the first period, to obtain a critical sampling voltage; calculating a voltage difference slope; calculating a charging time, which is consumed by charging the battery from a lower-bound voltage to an upper-bound voltage with the constant current; calculating a compensation ratio value; and calculating the remaining capacity of the battery.Type: GrantFiled: January 19, 2020Date of Patent: May 17, 2022Assignee: National Chung-Shan Institute of Science and TechnologyInventors: Wen-Chen Lih, Tsung-Yu Tsai, Shih-Chang Tseng
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Publication number: 20210223323Abstract: The present invention discloses a method for rapidly estimating for a remaining capacity of a battery, comprising performing a constant current charge to the battery in a first period, instantly capturing a voltage/temperature of the battery in a frequency, and generating a voltage-time graph; after leaving the battery along for a second period, instantly capturing the voltage/temperature of the battery in the frequency; calculating a voltage rising rate during the first period; calculating a voltage drop rate during a leaving-along period; calculating a critical sample time; applying the critical sample time, and comparing the voltage-time graph measured in the first period, to obtain a critical sampling voltage; calculating a voltage difference slope; calculating a charging time, which is consumed by charging the battery from a lower-bound voltage to an upper-bound voltage with the constant current; calculating a compensation ratio value; and calculating the remaining capacity of the battery.Type: ApplicationFiled: January 19, 2020Publication date: July 22, 2021Inventors: Wen-Chen Lih, Tsung-Yu Tsai, Shih-Chang Tseng
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Patent number: 10613150Abstract: A battery health state evaluation method for evaluating a health state of a battery comprises a charging step, an idling step, a pulse discharging step, an evaluation index calculating step, and an evaluation result yielding step. The evaluation index calculating step retrieves a continuous voltage data and a continuous current data in a charging process, an idling process, and a pulse discharge process and calculates a plurality of evaluation indexed according to the continuous voltage data and continuous current data. The evaluation indexes are associated with the health state of the battery. The evaluation result yielding step evaluates the health state of the battery according to the indexes and yields an evaluation result. Therefore, the battery health state evaluation method is easy, convenient, and effective in performing a test quickly and accurately.Type: GrantFiled: December 7, 2017Date of Patent: April 7, 2020Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Wen-Chen Lih, Hung-Jhih Ku, Bo-Lin Liao, Tsung-Yu Tsai
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Publication number: 20190178943Abstract: A battery health state evaluation method for evaluating a health state of a battery comprises a charging step, an idling step, a pulse discharging step, an evaluation index calculating step, and an evaluation result yielding step. The evaluation index calculating step retrieves a continuous voltage data and a continuous current data in a charging process, an idling process, and a pulse discharge process and calculates a plurality of evaluation indexed according to the continuous voltage data and continuous current data. The evaluation indexes are associated with the health state of the battery. The evaluation result yielding step evaluates the health state of the battery according to the indexes and yields an evaluation result. Therefore, the battery health state evaluation method is easy, convenient, and effective in performing a test quickly and accurately.Type: ApplicationFiled: December 7, 2017Publication date: June 13, 2019Inventors: WEN-CHEN LIH, HUNG-JHIH KU, BO-LIN LIAO, TSUNG-YU TSAI
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Patent number: 9812886Abstract: A method of diagnosing a battery and adaptively adjusting charging modes of the battery includes the steps of initially charging the battery using a constant current mode, wherein the battery is charged by a fix current in the constant current mode; monitoring a deterioration index by a battery management system (BMS), the deterioration index including a highest temperature (Tempmax), an instantaneous temperature difference (?Temp), an instantaneous voltage difference (?V), an instantaneous internal resistance (IRmax), and a state of charge (SoC) of the battery; when Temp exceeds a predetermined temperature threshold, pausing charging the battery; charging the battery by a constant power charging mode when Tempmax becomes smaller than 90% of the predetermined temperature threshold, wherein the battery is charged by a fix electric power in the constant power mode; charging the battery by the constant current charging mode when Tempmax becomes smaller than 50% of the predetermined temperature thresh old.Type: GrantFiled: December 18, 2015Date of Patent: November 7, 2017Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Wen-Chen Lih, Chiu-Hua Tseng, Shiow-Yueh Ma, Yu-Min Liao
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Publication number: 20160190825Abstract: A method of diagnosing a battery and adaptively adjusting charging modes of the battery includes the steps of initially charging the battery using a constant current mode, wherein the battery is charged by a fix current in the constant current mode; monitoring a deterioration index by a battery management system (BMS), the deterioration index including a highest temperature (Tempmax), an instantaneous temperature difference (?Temp), an instantaneous voltage difference (?V), an instantaneous internal resistance (IRmax), and a state of charge (SoC) of the battery; when Temp exceeds a predetermined temperature threshold, pausing charging the battery; charging the battery by a constant power charging mode when Tempmax becomes smaller than 90% of the predetermined temperature threshold, wherein the battery is charged by a fix electric power in the constant power mode; charging the battery by the constant current charging mode when Tempmax becomes smaller than 50% of the predetermined temperature thresh old.Type: ApplicationFiled: December 18, 2015Publication date: June 30, 2016Inventors: WEN-CHEN LIH, CHIU-HUA TSENG, SHIOW-YUEH MA, YU-MIN LIAO
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Publication number: 20140055143Abstract: A battery testing system with energy circulation includes a battery module to be tested, an electric power storage module, a bi-directional conversion module and a control module, and the control module controls the bi-directional conversion module to discharge the electric power storage module and charge the battery module to be tested, or discharge the battery module to be tested and charge the electric power storage module, so that the electricity can be fully and repeatedly used, and the electric power storage module can use a second-used power battery to save the cost of the electric power storage module while the battery testing system can be isolated from the grid of utility power to avoid creating a burden to the grid of the utility power.Type: ApplicationFiled: September 25, 2012Publication date: February 27, 2014Applicant: CHUNG-SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Fa-Hwa Shieh, Ming-Lun Liu, You-Rong Lin, Wen-Chen Lih, Yu-Min Liao
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Publication number: 20130158912Abstract: Disclosed is an apparatus for measuring and classifying a cell pack based on statistical parameters of charge of and discharge from the cell pack. The apparatus includes a control unit, a register, a database, a display, a charger and a load. The register, the database, the display, the charger and the load are connected to the control unit.Type: ApplicationFiled: December 15, 2011Publication date: June 20, 2013Applicant: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National DefenceInventors: Jieh-Hwang Yen, Fa-Hwa Shieh, Wen-Chen Lih, Kuo-Kuang Jen, Ym-Min Liao
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Publication number: 20130138857Abstract: Disclosed is an extensive battery management system for a second-used application automobile use batteries. The extensive battery management system includes a process unit, a record unit, an input interface and an output interface. The record unit is connected to the process unit so that the former stores data from the latter. The input interface is connected to the process unit. The output interface is connected to the process unit.Type: ApplicationFiled: November 28, 2011Publication date: May 30, 2013Applicant: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National DefenseInventors: Fa-Hwa Shieh, Ming-Lun Liu, Wen-Chen Lih, Chee-Chang Chen