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Method and device for determining safety voltage of storage battery

A technology of safe voltage and battery, applied in the field of power supply, can solve the problems of unfavorable use of batteries, ignoring the differences of battery packs such as region, environment, frequency of use, waste of battery performance, etc.

Active Publication Date: 2015-07-22
HANDAN BRANCH OF CHINA MOBILE GRP HEBEI COMPANYLIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the safety voltage of the battery is generally set according to a unified threshold value such as 48V. This approach largely ignores the differences of the battery pack such as regions, environments, and frequency of use, which is not conducive to better battery
If the available safe voltage of the battery may be lower than 48V, the battery can continue to supply power within a safe range when the voltage drops to 48V, and the safe voltage of the battery is set to 48V across the board, which wastes part of the battery performance; if the battery The safety voltage of the battery may be higher than 48V. When the voltage drops to 48V, the battery is already in an over-discharge state, which will damage the battery.

Method used

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  • Method and device for determining safety voltage of storage battery
  • Method and device for determining safety voltage of storage battery
  • Method and device for determining safety voltage of storage battery

Examples

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Embodiment 1

[0051] Batteries are widely used in various electrical equipment, such as batteries are indispensable electrical equipment for base stations. The data collected by the maintenance personnel for these batteries with huge data is larger. How to quickly screen, organize and judge the massive data collected is an important problem faced by the maintenance personnel. If it is impossible to remove the coarse data and keep the essence, it will be difficult to form a complete screening and sorting of the massive data, and it will not be possible to further analyze and maintain the operating status and performance of the battery more accurately, and it will also cause battery failure. High efficiency and short service life, thus increasing operation and maintenance costs. The method and device for determining the battery safety voltage provided by the embodiments of the present invention determine the battery safety voltage according to the collected discharge data of the battery.

[...

Embodiment 2

[0098] Based on the first embodiment of the present invention, before step 101, the method for determining the safety voltage of the storage battery provided by the second embodiment of the present invention further includes: collecting the first data of the storage battery when it is being discharged, and removing the fast-decreasing part of the data in the first data ;

[0099] Here, those skilled in the art can use various collection tools such as discharge instruments to collect the first data of the storage battery during discharge; if the storage battery is installed in the base station, those skilled in the art can also use power environment monitoring equipment to collect the battery The first data during discharge; those skilled in the art can use various existing technologies to obtain the first data during discharge of the storage battery according to the specific environment, so details are not repeated here.

[0100] Here, the first data after removing the fast-fa...

Embodiment 3

[0111] image 3 A schematic diagram of the composition and structure of the device for determining the safety voltage of the storage battery in the embodiment of the present invention, as shown in image 3 As shown, the device includes a first processing unit 31, a second processing unit 32, a third processing unit 33, a fourth processing unit 34 and a fifth processing unit 35, wherein:

[0112] The first processing unit 31 is configured to fit a first straight line from the first data point to the i-th data point for the i-th data point in the collected first data when the storage battery is discharged, And determine the first slope and the first correlation coefficient of the first straight line, and fit the second straight line according to the i-th data point to the m-th data point, and determine the second slope of the second straight line and a second correlation coefficient, wherein the first data includes m data points, m is an integer greater than 3, 2≤i≤m-1;

[011...

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Abstract

The invention discloses a method and a device for determining safety voltage of a storage battery. The method comprises the steps of fitting a first straight line according to a first data point to an ith data point in allusion to the ith data point in first data acquired when the storage battery discharges, determining a first slope and a first correlation coefficient of the first straight line, fitting a second straight line according the ith data point to an mth data point, and determining a second slope and a second correlation coefficient of the second straight line; determining the first data point whose absolute value of the difference between the first slope and the second slope is the maximum in all of the data points; fitting a third straight line according to the first data, and determining a third slope and a third correlation coefficient of the third straight line; determining the type of a discharge curve of the storage battery according to the first slope, the first correlation coefficient, the second slope, the second correlation coefficient corresponding to the first data point and the third slope and the third correlation coefficient of the third straight line; and determining the safety voltage of the storage battery according to the type of the discharge curve.

Description

technical field [0001] The invention relates to power supply technology, in particular to a method and device for determining the safe voltage of a storage battery. Background technique [0002] Batteries are a type of equipment that are sensitive to environmental factors. The environment of the battery packs in each region is different, the charging and discharging frequency and times of the batteries are also different, and the performance status of the batteries is also slightly different. From this, it can be concluded that the real safe use voltage of each battery pack is also different. [0003] In the prior art, the safety voltage of the battery is generally set according to a unified threshold value such as 48V. This approach largely ignores the differences of the battery pack such as regions, environments, and frequency of use, which is not conducive to better use the battery. If the available safe voltage of the battery may be lower than 48V, the battery can cont...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 赵洪锋张世勇霍绍博陈平耿君毅马锦素谷文奎侯平王滨单莘胡继业
Owner HANDAN BRANCH OF CHINA MOBILE GRP HEBEI COMPANYLIMITED