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A method and device for determining battery safety voltage

A technology of safe voltage and battery, applied in the field of power supply, can solve the problems of wasting battery performance, damaging the battery, and disadvantageously using the battery, etc.

Active Publication Date: 2017-11-21
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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  • A method and device for determining battery safety voltage
  • A method and device for determining battery safety voltage
  • A method and device for determining battery safety voltage

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Experimental program
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Embodiment 1

[0051] Batteries are widely used in various electrical equipment, such as batteries are indispensable power equipment for base stations. The data collected by maintenance personnel for these batteries with huge data is larger. How to quickly filter, organize and judge these massive data collected is an important problem faced by maintenance personnel. If these massive data cannot be deconstructed and refined, 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 failures. 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.

[0052] The discharge...

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 It is a schematic diagram of the composition and structure of the device for determining the battery safety voltage according to the embodiment of the present invention. As shown in FIG. five processing units 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;

[0113] Here, the first data includes m data points, m is an integer greater than 3, 2≤i≤m-1;

[0114] Here, take the i-th data point as an example to illust...

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PUM

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Abstract

The invention discloses a method and device for determining the safe voltage of a storage battery. The method includes: for the i-th data point in the first data collected when the storage battery is discharged, according to the first data point to the i-th data point Points fit the first straight line, 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 first straight line of the second straight line Two slopes and the second correlation coefficient; determine the first data point at which the absolute value of the difference between the first slope and the second slope of the data point is the largest among all data points; fit the third straight line according to all the first data, and determine The third slope and the third correlation coefficient of the third straight line; according to the first slope, the first correlation coefficient, the second slope and the second correlation coefficient corresponding to the first data point, and the third slope and the third correlation coefficient of the third straight line Correlation coefficient to determine the discharge curve type of the storage battery; determine the safe voltage of the storage battery according to the discharge curve type.

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 operating 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 ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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