Title:
BATTERY STATE ESTIMATION SYSTEM AND METHOD FOR ENERGY-INDEPENDENT SMART SENSOR
Document Type and Number:
WIPO Patent Application WO/2022/139346
Kind Code:
A1
Abstract:
A battery state estimation system and method for an energy-independent smart sensor are provided. In order to monitor the voltage and the current for each operation state of a sensor to utilize same for the state estimation of a battery without excessive energy consumption, SoC and SoH information about the battery is provided from voltage and current changes according to load changes for each operation cycle of the sensor, in order to improve accuracy in lifespan estimation of a sensor battery, voltage and current information for each operation state is acquired in comparison with that of a conventional OCV method, thereby increasing SoC and SoH accuracy, and SoH can be estimated through the measurement of a voltage drop value after the termination of a sensor operation, so that maintenance and management costs of a sensor network can be reduced.
Inventors:
KIM YOUNG HO (KR)
KIM DAE HWAN (KR)
KIM DAE HWAN (KR)
Application Number:
PCT/KR2021/019290
Publication Date:
June 30, 2022
Filing Date:
December 17, 2021
Export Citation:
Assignee:
KOREA ELECTRONICS TECHNOLOGY (KR)
International Classes:
G01R31/367; G01R1/20; G01R19/165; G01R31/28; G01R31/36; G01R31/371; G01R31/392
Foreign References:
| KR20180107636A | 2018-10-02 | |||
| KR20190122409A | 2019-10-30 | |||
| JP6308336B2 | 2018-04-11 | |||
| KR20100095751A | 2010-09-01 | |||
| KR101648012B1 | 2016-08-12 |
Attorney, Agent or Firm:
SEWON PATENT LAW FIRM (KR)
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