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Method and system for testing battery electricity quantity

A technology of battery power and test method, applied in the field of electricity, can solve the problems of no power coulomb counter module and high cost, etc.

Inactive Publication Date: 2016-05-04
ZHEJIANG TECHAIN ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although this method can achieve the effect of accurate measurement, its cost is relatively expensive
In the low-cost design scheme, there is no dedicated power coulomb meter module

Method used

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  • Method and system for testing battery electricity quantity
  • Method and system for testing battery electricity quantity
  • Method and system for testing battery electricity quantity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] like figure 1 As shown, a method for testing battery power is disclosed in this embodiment, and the method includes:

[0059] S101. Calculate the battery load current according to the obtained battery internal resistance and the battery load voltage, and calculate the power loss or increase power according to the battery load current;

[0060] S102, obtaining the initial battery power according to the acquired battery no-load voltage;

[0061] S103. Calculate and obtain the current battery power according to the obtained total battery power, the initial battery power, and the consumed or increased power.

[0062] In this way, only the same type of battery needs to be discharged and tested to obtain relevant parameters of the battery, such as battery internal resistance, battery load voltage, battery no-load voltage, total battery power, initial battery power and other parameters, and then conduct a series of The current battery power can be obtained by calculation. Of...

Embodiment 2

[0110] This embodiment is a further detailed description of the current power calculation in the embodiment, combined with figure 2 shown.

[0111] Step 1: According to the collected current temperature t, and the battery no-load voltage, battery internal resistance, and initial battery power (T ocv -r-c) The corresponding relationship between the three, using the linear interpolation method to dynamically calculate the battery no-load voltage corresponding to the current temperature, battery internal resistance, initial battery power (T ocv -r-c) Correspondence between the three. At the same time, according to the collected current temperature and the total battery capacity C under 5 temperatures (-20°C, -10°C, 0°C, 25°C, 50°C max(t) , dynamically calculate the total battery capacity C corresponding to the current temperature by linear interpolation method max .

[0112] Step 2: According to the collected battery power-on no-load voltage V ocv-init Inquiry form T ocv-r...

Embodiment 3

[0127] Such as image 3 As shown, this embodiment discloses a battery power test system, the system includes:

[0128] The load current processing module 201 is used to calculate the battery load current according to the obtained battery internal resistance and the battery load voltage, and calculate the power loss or increase power according to the battery load current;

[0129] An initial power processing module 202, configured to obtain the initial battery power according to the acquired battery no-load voltage;

[0130] The current power processing module 203 is configured to calculate and obtain the current battery power according to the acquired total battery power, the initial battery power, and the consumed or increased power.

[0131] In this way, only the same type of battery needs to be discharged and tested to obtain relevant parameters of the battery, such as battery internal resistance, battery load voltage, battery no-load voltage, total battery power, initial ba...

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Abstract

The invention discloses a method and system for testing battery electricity quantity. The method comprises following steps: battery load current is calculated according to obtained battery internal resistance and battery load voltage; electricity quantity loss or increment is calculated according to the battery load current; initial battery electricity quantity is obtained according to obtained battery no-load voltage; current battery electricity quantity is calculated according to the battery total electricity quantity, the initial battery electricity quantity, and the electricity quantity loss or increment. By use of the method, discharge test is performed to batteries of the same kind to obtain relative parameters such as battery internal resistance, battery load voltage, battery no-load voltage, battery total electricity quantity, and initial battery quantity, of the batteries, and then a series of mathematical operations are performed to obtain the current battery electricity quantity. As a result, coulometer modules specially installed for measuring battery electricity quantity are saved so that the cost of mobile terminals or electronic devices is greatly reduced and therefore the method and system have stronger market competitiveness.

Description

technical field [0001] The invention relates to the field of electricity, in particular to a method and system for testing battery power. Background technique [0002] In portable electronic devices such as mobile phones, in order to allow users to know the power of electronic devices in real time, the existing design schemes are equipped with a hardware battery power coulomb counter module, and the mobile phone only needs to read the corresponding register interface, that is, The value of the current consumed power of the battery can be obtained. [0003] Although this method can achieve the effect of accurate measurement, its cost is relatively expensive. In the low-cost design scheme, there is no dedicated power coulomb meter module. How to design a low-cost and high-precision battery power test method is an urgent problem in this field. Contents of the invention [0004] The object of the present invention is to provide a method and system for testing battery power ...

Claims

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Application Information

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IPC IPC(8): G01R31/36
CPCG01R31/382
Inventor 周才海高加喜薛闯任尽田
Owner ZHEJIANG TECHAIN ELECTRONICS TECH CO LTD
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