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Online judging method of backup battery capacity

A battery and judgment method technology, applied in the measurement of electrical variables, measuring electricity, measuring devices, etc., can solve the problems that the internal resistance cannot directly and clearly represent the battery capacity, the battery maintenance confusion, and the non-recyclable use, etc., to avoid consumption, Improve timeliness and ensure timeliness

Inactive Publication Date: 2011-12-21
哈尔滨龙易电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]2. During the discharge test, the power consumption of the battery pack is transformed into non-recyclable heat energy, which wastes a lot of energy
However, due to the maintenance requirements of the battery, it is necessary to clearly grasp the current storage capacity of the battery, and the internal resistance cannot intuitively and clearly represent the storage capacity of the battery, so in practical applications, it brings great confusion to battery maintenance

Method used

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  • Online judging method of backup battery capacity
  • Online judging method of backup battery capacity
  • Online judging method of backup battery capacity

Examples

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Embodiment 1

[0019] The method for judging the capacity of the backup battery on-line is composed of: obtaining the corresponding relationship between the internal resistance of the battery and the capacity of the battery through actual measurement, and setting the internal resistance of the battery obtained by the corresponding relationship according to the capacity of the battery to R 1 , the actual measured internal resistance of the battery is set to R 2 , according to the following formula to calculate the reference value of internal resistance R 0 :R 0 =ωR 1 +(1-ω)R 2 , where ω is the weighting coefficient, and the current internal resistance of the battery is determined to be R i , then ΔR%=(R i -R 0 ) / R 0 , according to the corresponding relationship measured by the actual value of ΔR% image 3 The current capacity range of the battery can be determined.

[0020] With the operation of the battery, the internal resistance of the battery will increase to a certain extent, and...

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Abstract

The online judging method of the backup battery capacity, the existing battery capacity measurement technology is relatively lagging behind. The online judging method for the capacity of the backup battery comprises the following steps: obtaining the corresponding relationship between the internal resistance of the battery and the capacity of the battery through actual measurement; R2, calculate the internal resistance reference value R0 according to the following formula: R0=ωR1+(1-ω)R2, where ω is the weighting coefficient, which can be found from the chart obtained by actual measurement, and the current internal resistance of the battery is determined to be Ri, then ΔR%=(Ri-R0) / R0, according to the value of ΔR%, the current capacity range of the storage battery can be determined from the actually measured correspondence table. This method is used for on-line measurement of battery capacity.

Description

Technical field: [0001] The invention relates to an online judging method for the capacity of a backup storage battery. Background technique: [0002] With the improvement of power supply quality requirements in various industries, backup battery packs have been widely used, such as battery packs in electric operating power supplies, battery packs in communication power supplies, battery packs in uninterruptible power supply UPS, and battery packs in emergency power supply EPS. Group. However, in terms of how to master battery capacity technology in a timely manner, domestic and foreign technologies are relatively lagging behind. [0003] At present, in the field of international batteries, the capacity measurement technology of the backup battery pack is carried out by the ampere-hour integration method. In actual work, a flexible method is often used, that is, by discharging the battery at a constant current, the battery is discharged to the cut-off voltage, the time of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36
Inventor 于雷
Owner 哈尔滨龙易电气有限公司
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