System and method for online monitoring charging state of energy storage device by fiber

Abstract

The invention discloses a system and method for online monitoring the charging state of an energy storage device by a fiber. The system comprises a light source, a polarizer, a polarization controller, a fiber circulator, a fiber sensor probe, an electrochemical supercapacitor device, a fiber optical spectrometer and an electrochemical workstation, the light source, the polarizer, the polarizationcontroller, the fiber circulator and the fiber sensor probe are sequentially connected, the fiber optical spectrometer is connected with the fiber circulator, the electrochemical supercapacitor device is connected with the electrochemical workstation, and the fiber sensor probe is placed in an electrochemical supercapacitor device. The fine fiber-like fiber sensing probe is used to transmit an optical signal, acts as the sensing probe to acquire light wave information in order to monitor the potential of a supercapacitor during charging and discharging and the real-time stored electricity amount information in real time, can be implanted in a small space to achieve in-situ measurement, and also can simultaneously measure changes of multiple parameters in real time, such as the charge state, the potential, temperature and other pieces of information.

Description

technical field [0001] The invention relates to an online charging state monitoring system and method, in particular to an optical fiber online monitoring system and method for the charging state of an energy storage device, belonging to the field of optical fiber electrochemical sensor design. Background technique [0002] At present, the earth's energy is facing various enormous challenges. With the consumption of fossil fuels such as oil, coal and natural gas and the transitional emission of greenhouse gases, the energy supply structure of human society must develop from non-renewable energy to renewable energy to solve the problems of energy depletion and rising sea levels. Whether these problems can be solved mainly depends on the effective use and management of energy equipment systems. Contemporary technology has achieved rapid development in the fields of information science and electronic technology in the last 20 to 30 years. In the commercial mobile phones that ...

AI Technical Summary

Problems solved by technology

At present, the detection methods for supercapacitors are all "off-line" detection methods, that is, it is impossible to measure the charge status of the capacitor while it is charging and discharging. Instead, it is necessary to wait for the capacitor to stop working and use an electrochemical workstation to test the electrode. Whether the electrochemical performance is attenuated or damaged

Of course, equipment such as transmission electron microscope or cryo-electron microscope can also be used to test the capacitor while it is working. However, due to the extremely expensive equipment such as transmission electron microscope and cryo-electron microscope, they are not suitable for on-site measurement. Monitoring technology cannot be developed and widely used on a large scale

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