A method and device for testing a supercapacitor
A technology of super capacitor and test device, which is applied in the direction of measurement device, measurement of electricity, measurement of electric variables, etc., can solve the problems of energy system not working normally, low voltage of single super capacitor, etc.
Active Publication Date: 2017-06-30
CHINA UNIV OF MINING & TECH
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Problems solved by technology
[0003] However, due to the low voltage of a single supercapacitor, in actual use, a large-scale series-parallel connection is required
If a single cell fails, the entire energy system may not work properly, so it is very important to study the aging characteristics of supercapacitors
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[0035] The present invention will be described in detail below in conjunction with specific embodiments.
[0036]A supercapacitor testing method is as follows: First, the capacity of the supercapacitor is tested according to the IEC62391-1-2006 supercapacitor standard, and then the charging and discharging cycle is continued to accelerate the aging of the supercapacitor. After the set time t, the upper computer collects the information collected by the acquisition module and the on-off time information of the multiplexer obtained by the single-chip microcomputer, and finally obtains the state of charge, load voltage, open-circuit voltage and other values, and draws the corresponding value according to these values curve. At the same time, start the next cycle, test the capacity of the supercapacitor, continue to charge and discharge, and repeat until the aging failure standard of the supercapacitor is reached. Aging failure is based on the ratio of the current capacity to the...
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The invention discloses a method and a device for testing a super capacitor. The device comprises a charge circuit, a multi-path selector, an electronic load, a control module, a collection module and a host computer, wherein the charge circuit is connected with a to-be-tested super capacitor through the multi-path selector; the to-be-tested super capacitor is connected with the electronic load through the multi-path selector; the control module is connected with the multi-path selector and is used for controlling the multi-path selector in a timing manner, selecting the connection modes of connection, series connection, parallel connection and series and parallel connection of single super capacitor bodies, and switching between charge loops or discharge loops; the collection module comprises a multi-path collection channel and is used for collecting terminal voltage, current and temperature of the super capacitor. According to the method and the device for testing the super capacitor disclosed by the invention, ageing of the super capacitor can be accelerated; the parameters such as voltage, current and state of charge (soc) of the super capacitor can be measured; automatic monitoring is achieved all the way; development of state monitoring work in the future is facilitated.
Description
technical field [0001] The invention relates to the fields of power electronics technology and micro-control technology, in particular to a supercapacitor testing method and device. Background technique [0002] Supercapacitor has super power storage capacity and can provide a physical secondary power source with strong pulse power. It has the characteristics of high reliability, good ultra-low temperature characteristics, environmental protection and no pollution. It is an effective way to solve the shortage problem, and it has also been widely used in various industries such as new energy vehicles, electric power, elevators, coal mines and construction machinery. [0003] However, due to the low voltage of a single supercapacitor, in actual use, a large-scale series-parallel connection is required. If a single cell fails, the entire energy system may not work properly, so it is very important to study the aging characteristics of supercapacitors. Due to the long life of ...
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IPC IPC(8): G01R31/00
Inventor 周公博王后连朱真才李伟彭玉兴李志翔王朋辉
Owner CHINA UNIV OF MINING & TECH