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Battery capacity detection method and device

A technology of battery power and detection method, which is applied to measuring devices, measuring electrical variables, measuring electricity, etc., can solve problems such as false alarms of low battery power, and achieve the effect of improving accuracy and avoiding affecting normal power consumption work.

Pending Publication Date: 2020-11-17
VATTI CORP LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, in daily work, the moment the electrical switch is turned on, it is easy to cause false alarms of low battery power.

Method used

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  • Battery capacity detection method and device
  • Battery capacity detection method and device
  • Battery capacity detection method and device

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Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1 of the present invention firstly provides a battery power detection method, such as figure 1 shown, including the following steps:

[0034] S1, continuously collect battery voltage and obtain multiple voltage value data;

[0035] S2, judge whether the battery is in the load shock stage according to the amplitude of the voltage value data; if so, the voltage value data in the load shock stage is invalid data, and filter out the invalid data; if not, determine that the battery is in the stabilization stage, this stage The voltage value data in is valid data;

[0036] S3, judging whether the battery is in a low battery state according to the valid voltage value data.

[0037] Such as Figure 5 As shown, the moment the electrical switch is turned on, the battery is impacted by the load. At this moment, the current is very large and the voltage fluctuation range is large. Especially when the internal resistance of the battery is large, its discharge capacity ...

Embodiment 2

[0046] On the basis of the first embodiment, the method for calculating the amplitude of the voltage value in the second embodiment includes: calculating the difference between two adjacent voltage values ​​in the collected voltage value data, and the difference is the amplitude. In this embodiment, the interval time for collecting the voltage is 1-100 milliseconds, so that the calculated voltage amplitude is more accurate.

[0047] The absolute value of the difference is compared with the set amplitude threshold, and if the absolute value is greater than the amplitude threshold, it is judged that the battery is in the load impact stage.

[0048] In this embodiment, the setting method of the amplitude threshold value is as follows: first, conduct multiple tests, count the voltage value data obtained from multiple tests, obtain the average value of the battery voltage value amplitude during the load impact stage, and take half of this average value as Amplitude Threshold. Each...

Embodiment 3

[0063] On the basis of the first embodiment, the method for calculating the amplitude of the voltage value in the third embodiment includes: calculating a variance value of a plurality of acquired voltage value data, and setting the variance value as the amplitude.

[0064] The variance value is compared with the set amplitude threshold, and if the variance value is greater than the amplitude threshold, it is judged that the battery is in the load impact stage.

[0065] The method of setting the amplitude threshold is as follows: firstly conduct multiple tests, count the battery voltage value data obtained from multiple tests, find the average value of the variance of the battery voltage value in the load impact stage, and take half of this average value as the amplitude threshold value. Each subsequent detection will use this amplitude threshold as a fixed standard, and compare it with the data at the time of detection.

[0066] The concrete method of present embodiment three...

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Abstract

The invention discloses dattery capacity detection method and device, wherein the method comprises the following steps: S1, continuously collecting the voltage of the battery, and obtaining a plurality of voltage values; S2, determining whether the battery is in a load impact stage or not according to the voltage value, wherein if yes, the voltage value in the load impact stage is invalid data, and the invalid data is filtered out, and if not, it is judged that the battery is in a stability approaching stage, and the voltage value in the stage is valid data; and S3, judging whether the batteryis in a low electric quantity state or not according to the effective voltage value. The battery electric quantity detection device comprises a voltage acquisition unit, a data processing unit and anelectric quantity judgment unit. According to the invention, the situation of low-power false alarm caused by large voltage fluctuation due to battery load impact can be prevented, such that the reliability of the acquired voltage value is ensured, the accuracy of battery low-power detection is improved, and the influence on normal power utilization work is avoided.

Description

technical field [0001] The invention belongs to the technical field of battery power supply, and in particular relates to a battery power detection method and device. Background technique [0002] In a battery-powered system, when the battery power is too low, it will affect the normal operation of the electrical equipment. Therefore, it is necessary to detect the battery power in real time to determine whether the battery power is too low. However, in daily work, the moment the electrical switch is turned on, it is easy to cause false alarms of low battery power. Contents of the invention [0003] In order to solve the above-mentioned problems and deficiencies in the prior art, the object of the present invention is to provide a method and device for detecting battery power, which can prevent false alarms of low battery power and improve the detection accuracy of low battery power. [0004] In order to achieve the above object, the present invention firstly provides a me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/388G01R31/36
CPCG01R31/388G01R31/3648
Inventor 林枝堂王巍吉罗钊明潘叶江
Owner VATTI CORP LTD
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