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Detecting method and device for battery capacity

A detection method and detection device technology, which is applied in the direction of measuring devices, measuring electrical variables, measuring electricity, etc., can solve the problems affecting the error accuracy of the electricity meter, and achieve the effect of simple and accurate capacity

Inactive Publication Date: 2017-06-13
SHENZHEN TINNO WIRELESS TECH
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AI Technical Summary

Problems solved by technology

In the algorithm of the fuel gauge, a very important parameter is the capacity Q MAX As we all know, the capacity of the battery gradually decreases with the continuous use and circulation, so the accuracy of the capacity of the cycle process directly affects other aspects of the fuel gauge, thus affecting the error accuracy of the entire fuel gauge

Method used

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  • Detecting method and device for battery capacity
  • Detecting method and device for battery capacity
  • Detecting method and device for battery capacity

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Embodiment Construction

[0021] refer to figure 1 , figure 1 It is a schematic flow chart of an embodiment of the battery capacity detection method of the present invention, the method comprising:

[0022] S11: Detect a first capacity difference between the capacity of the current battery when it is charged with the first charging voltage and the capacity when it is charged with the second charging voltage.

[0023] Such as figure 2 As shown, among them, before T3 represents the constant current charging stage, and after T3 represents the constant voltage charging stage.

[0024] Specifically, the capacity difference Q2-Q1 between the electric quantity Q1 corresponding to the first charging voltage corresponding to the time T1 and the electric quantity Q2 corresponding to the second charging voltage corresponding to the time T2 may be selected.

[0025] Understandably, since two different voltage values ​​cannot be selected during the constant voltage charging phase, and the change curve of the ba...

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Abstract

The invention discloses a detecting method and device for battery capacity. The detecting method includes the steps that first capacity difference between the charging capacity of a current battery at first charging voltage and the charging capacity of the current battery at second charging voltage is detected; second capacity difference between the charging capacity of a standard battery at first charging voltage and the charging capacity of the standard battery at second charging voltage is obtained, and the total capacity of the standard battery is obtained; according to the proportion relation of the first capacity difference and the second capacity difference and the total capacity of the standard battery, the total capacity of the current battery is determined. In this way, the detecting method and device can easily and accurately determine the battery capacity after recycling.

Description

technical field [0001] The invention relates to the technical field of charging, in particular to a method and device for detecting battery capacity. Background technique [0002] Most of the existing mobile terminals work with a built-in battery and external charging. During the charging and discharging process of the battery, the mobile terminal needs to display the battery power in real time. For example, the battery power displayed on the status bar of a commonly used mobile phone is average. is displayed as a percentage. [0003] At present, in the algorithm processing of fuel gauges in the industry, there are mainly the following steps: 1. Modeling at different temperatures and different discharge currents; 2. Proposing the initial capacity of the battery; 3. The charging and discharging power algorithm; 4. In the cycle In the process of updating the capacity of the battery. In the algorithm of the fuel gauge, a very important parameter is the capacity Q MAX As we a...

Claims

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Application Information

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IPC IPC(8): G01R31/36
CPCG01R31/3648G01R31/387
Inventor 李城铭倪漫利
Owner SHENZHEN TINNO WIRELESS TECH
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