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Battery constant voltage backtracking online test device and method for uninterruptible power supply system

An online test and power supply system technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of cumbersome test preparation, occupying a large memory space, and troublesome table acquisition, so as to achieve intuitive test results and less preparation work , The effect of saving test cost

Active Publication Date: 2016-11-02
KEHUA DATA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are two commonly used methods for battery testing: online testing and offline testing. In systems with high requirements for power quality, offline battery testing will bring corresponding risks, and the preparation for testing is relatively cumbersome; online testing The method often needs to establish one or several complex data tables or complex algorithms, compare the actual battery discharge situation with the parameters in the data table, and obtain battery performance information. Due to factors such as different loads and instability, in order to obtain more Accurate battery performance requires the establishment of increasingly cumbersome table information, which is cumbersome to obtain and takes up a lot of memory space

Method used

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  • Battery constant voltage backtracking online test device and method for uninterruptible power supply system
  • Battery constant voltage backtracking online test device and method for uninterruptible power supply system
  • Battery constant voltage backtracking online test device and method for uninterruptible power supply system

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Effect test

Embodiment 1

[0044] Applied to uninterruptible power supply systems directly connected to batteries, such as figure 2 As shown, the uninterruptible power supply system includes an AC / DC module, a DC / DC module or a DC / AC module and a battery connected in sequence, the battery is connected to the output terminal of the AC / DC module, and the discharge actuator is AC / DC DC module, the AC / DC module is a controllable rectifier circuit; this type of system has no independent charge and discharge control circuit, battery charging is controlled by the AC / DC module, when the AC / DC module is abnormal, the battery discharge is completely controlled by the load Decide. Among them, the AC / DC module realizes the function of converting AC power into DC power, and the DC / DC module or DC / AC module mainly converts the relatively stable DC power obtained by the previous stage into the power required by the load.

[0045] The battery is directly connected to the DC bus, and the battery can be passively disch...

Embodiment 2

[0057] Applied to uninterruptible power supply systems that are not directly connected to the battery, such as image 3 As shown, the uninterruptible power supply system includes an AC / DC module, a DC / DC step-down charging module, a DC / DC step-up discharging module, a DC / AC module or a DC / DC module, and a battery. The AC / DC module outputs Connect to the input terminal of the DC / DC step-down charging module, the input terminal of the DC / AC module or the DC / DC module, the output terminal of the DC / DC step-down charging module is connected to the battery, and the DC / DC boost discharge module The input terminal is connected to the battery, the output terminal of the DC / DC boost discharge module is connected to the DC / AC module or the input terminal of the DC / DC module, the discharge actuator is a DC / DC boost discharge module, and the The DC / DC step-up discharge module is used for discharging the battery, the DC / DC step-down charging module is used for charging the battery, and the...

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Abstract

The invention relates to an on-line test device and method for battery constant voltage backtracking in an uninterruptible power supply system. The battery constant voltage backtracking online test device includes a battery discharge current closed-loop control module and a battery current sampling and conditioning module; the battery discharge current closed-loop control module includes a PID controller, a driving waveform generator and a discharge actuator , the output end of the PID controller is connected to the input end of the driving waveform generator, and the output end of the driving waveform generator is connected to the discharge actuator; the battery current sampling and conditioning module controls the discharge current of the battery Sampling and filtering are performed, and the difference between the output value of the battery current sampling and conditioning module and a given value is used as an input signal of the PID controller. The invention realizes the online constant current test of the battery, which greatly saves the test cost, and the method of the invention has higher test accuracy, quantifies the battery performance, and the test result is more intuitive.

Description

technical field [0001] The invention relates to an on-line test device and method for battery constant voltage backtracking in an uninterruptible power supply system. Background technique [0002] With the rapid development of the global economy, various data centers, bank outlets, highways and high-speed rails have developed rapidly, and these industries need high-quality electric energy to ensure the safe and uninterrupted work of the system, so these industries are UPS industry An opportunity for development. Among them, the backup energy of UPS—battery performance determines the backup working time of the system. Both UPS manufacturers and their customers hope to obtain reliable and relatively accurate battery performance related information when the system’s conventional power supply is normal, as a basis for battery maintenance and update. , backup plan preparation, etc., so the online UPS is in urgent need of an online, relatively accurate, qualitative test plan that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36
Inventor 杜伟陈四雄曾奕彰刘东
Owner KEHUA DATA CO LTD
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