Optical fiber Bragg voltage measuring method suitable for energy storage battery

An energy storage battery and voltage technology, applied in the direction of measuring current/voltage, using digital measurement technology to measure, measuring devices, etc., can solve the problems of expensive, inconvenient BMS system integration, open source and reliability Poor portability and other issues

Active Publication Date: 2021-06-22
SHANGHAI YUYUAN POWER TECH CO LTD
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Problems solved by technology

[0005] However, the existing optical fiber Bragg voltage measurement systems on the market are often expensive and bulky, and the main control c...

Method used

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  • Optical fiber Bragg voltage measuring method suitable for energy storage battery
  • Optical fiber Bragg voltage measuring method suitable for energy storage battery
  • Optical fiber Bragg voltage measuring method suitable for energy storage battery

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] see Figure 1~3 , a kind of optical fiber Bragg measuring voltage method applicable to energy storage battery, comprises voltage measuring system; Described voltage measuring system comprises:

[0032] ASE broadband light source: the main function of this module is to convert the electrical signal into an optical signal, and generate a light wave signal with sufficient power and a relatively wide spectrum, so that the light wave can be transmitted in th...

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Abstract

The invention discloses an optical fiber Bragg voltage measuring method suitable for an energy storage battery. An ASE broadband light source, an isolator, a splitter, a plurality of optical fiber Bragg strings, an F-P tunable filter, a sawtooth wave driving circuit, a photoelectric conversion circuit, an MCU and a passive equalization circuit are included. The BMS voltage measuring system has corrosion resistance, can be conveniently used at any position of various chemical batteries, such as the exterior and interior of a common lithium iron phosphate battery in the energy storage industry or the exterior and interior of a flow battery, and has the advantages of high precision, electromagnetic interference resistance and the like; STM32F103ZET6 is used as a main control chip, and a tunable F-P filter demodulation technology is combined to realize the voltage measuring system of the FBG sensor; the system is portable, small and exquisite, low in price and high in cost performance. The system can be conveniently integrated with an existing BMS system to replace a battery front-end acquisition chip AFE monopolized abroad for a long time.

Description

technical field [0001] The invention relates to an optical fiber Bragg voltage measuring method, in particular to an optical fiber Bragg voltage measuring method suitable for energy storage batteries, and belongs to the technical field of optical fiber sensing. Background technique [0002] Optical fiber Bragg sensor is a research hotspot in the field of optical fiber sensing in recent years. It is not subject to electromagnetic interference, high insulation performance, good explosion-proof performance, corrosion resistance and other advantages. [0003] The methods of fiber Bragg sensor demodulation mainly include interferometry, spectrometer method, wavelength tunable light source method, grating dispersion demodulation method, filtering method and so on. Among them, the tunable F-P filtering method has the advantages of high sensitivity and large tuning range. [0004] The existing BMS voltage measurement system uses the battery front-end acquisition chip AFE, which ha...

Claims

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Application Information

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IPC IPC(8): G01R19/25
CPCG01R19/2503Y02E60/10
Inventor 尚德华王嘉兴
Owner SHANGHAI YUYUAN POWER TECH CO LTD
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