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Supercapacitor detection method and device

A supercapacitor and detection method technology, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., can solve the problems of poor detection accuracy of supercapacitors, achieve accurate capacitance values, and improve accuracy and reliability.

Active Publication Date: 2017-10-10
SINOVEL WIND GRP
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  • Description
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  • Application Information

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Problems solved by technology

[0005] The present invention provides a supercapacitor detection method and device, which are used to solve the problem of poor detection accuracy of the existing supercapacitor damage

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  • Supercapacitor detection method and device

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0023] figure 1 A schematic flow chart of a supercapacitor detection method provided in Embodiment 1 of the present invention, such as figure 1 As shown, the method includes:

[0024] 101. During the process of charging the supercapacitor to be tested by the constant voltage source and the charging circuit, perform multiple samplings on the voltage of the supercapacitor to be tested according to the capacitor voltage sampling period to obtain multiple sampled values ​​of the capacitor voltage.

[0025] Wherein, the charging circuit, that is, the charging circuit of the supercapacitor under test, is connected to a constant voltage source, and the constant volt...

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Abstract

The present invention provides a supercapacitor detection method and device, wherein the method includes: in the process of charging the supercapacitor to be tested by a constant voltage source through a charging circuit, multiple times the voltage of the supercapacitor to be tested according to the capacitance voltage sampling period sampling to obtain a plurality of capacitance voltage sampling values; according to the plurality of capacitance voltage sampling values ​​and the capacitance calculation formula, calculate and obtain a plurality of capacitance capacitance values; wherein, t is the capacitance voltage sampling period, and R is charging in the charging circuit The resistance value of the resistor, UDC(n) is the constant voltage source voltage value of the nth capacitor voltage sampling cycle, UC(n‑1) is the capacitor voltage sampling value obtained in the n‑1th capacitor voltage sampling cycle, UC(n ) is the capacitor voltage sampling value obtained in the nth capacitor voltage sampling cycle, n is an integer greater than 0; according to the multiple capacitor capacitances and the capacitance threshold of the super capacitor to be tested, determine the super capacitor to be tested Is it damaged.

Description

technical field [0001] The invention relates to the technical field of capacitance detection, in particular to a supercapacitor detection method and device. Background technique [0002] Supercapacitor is a new type of energy storage device developed in the 1970s and 1980s. Because of its excellent high-current repeated and rapid charge-discharge performance, high power density and wide operating temperature range, etc., it has very A wide range of uses has played a huge role in promoting the development of the energy storage industry. [0003] In the field of wind power generation, supercapacitors are used as backup power for the pitch system of wind turbines, and provide energy for the feathering of the pitch system in the event of a fan failure or power outage, thereby avoiding serious accidents caused by wind turbines running out of control . Therefore, it is particularly important to detect whether the supercapacitor is damaged. Among them, a more common detection met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R27/26
Inventor 宋博陈曦卫浩李磊宋立刚
Owner SINOVEL WIND GRP