SOC detection device and method for all-vanadium redox flow battery

An all-vanadium redox flow battery and detection device technology, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., can solve the problems of weak applicability and poor precision, and achieve the effects of saving costs, preventing cost losses, and facilitating maintenance

Inactive Publication Date: 2017-12-01
SHANGHAI ELECTRICGROUP CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a SOC detection device and method for an all-vanadium redox flow battery in order to overcome the defects of poor accuracy and weak applicability in the SOC detection of the all-vanadium redox flow battery in the prior art

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  • SOC detection device and method for all-vanadium redox flow battery
  • SOC detection device and method for all-vanadium redox flow battery

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Embodiment Construction

[0034] The present invention is further illustrated below by means of examples, but the present invention is not limited to the scope of the examples.

[0035] Such as figure 1 As shown, the SOC detection device 2 of the all-vanadium redox flow battery provided in this embodiment includes an electrolyte sampling device, an ultraviolet spectrophotometer 23, a voltage monitoring unit 25 and a processing unit 24, and the ultraviolet spectrophotometer 23 and the voltage monitoring unit 25 are respectively It is electrically connected to the processing unit 24, and the electrolyte sampling device includes a positive electrode electrolyte sampling device 21 and a negative electrode electrolyte sampling device 22. In this embodiment, the model of each component is not specifically limited, and the corresponding functions are completed. , can be selected according to the actual situation. The SOC detection device 2 of the all-vanadium redox flow battery is arranged on the all-vanadium...

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Abstract

The invention discloses an SOC detection device and method for an all-vanadium redox flow battery. The SOC detection device comprises an electrolyte sampling device, a spectrophotometer and a processing unit. The electrolyte sampling device respectively samples positive and negative electrode electrolytes of an all-vanadium redox flow battery and performs dilution. The spectrophotometer performs wavelength scanning and respectively measures the absorbance of first wavelength light of the positive electrode electrolyte and the absorbance of second wavelength light of the negative electrode electrolyte. The processing unit calculates an SOC value on the positive electrode side according to the absorbance of the first wavelength light of the positive electrode electrolyte and also calculates an SOC value on the negative electrode side according to the absorbance of the second wavelength light of the negative electrode electrolyte. According to the invention, the interference of a temperature factor to the SOC detection is well avoided, the SOC detection accuracy of the all-vanadium redox flow battery is thus improved, the cost loss caused by a detection error is prevented, and various costs are saved.

Description

technical field [0001] The invention relates to the field of liquid flow battery detection, in particular to a SOC (State of Charge, state of charge) detection device and method for an all-vanadium redox flow battery. Background technique [0002] The all-vanadium redox flow battery is considered to be one of the most suitable electrochemical energy storage devices for large-scale energy storage. It uses vanadium ions in different valence states as the positive and negative electrolytes, and drives the positive and negative electrolytes in the stack through a pump. operate independently of each other. Compared with traditional batteries, all-vanadium redox flow batteries have the following advantages: 1. The electrolyte of all-vanadium redox flow batteries circulates inside the stack, so the entire battery system has good uniformity; 2. All-vanadium redox flow batteries The battery electrolyte is vanadium ions of different valence states, so there is no cross-contamination ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/388
Inventor 王少鹏廖文俊林友斌杨霖霖周禹汪保国马绍健季文姣苏青
Owner SHANGHAI ELECTRICGROUP CORP
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