Method for preestimating battery residual capacity

A technology of battery remaining capacity and remaining capacity, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve problems such as increasing the error range

Inactive Publication Date: 2008-06-25
BENQ CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantage is that the accuracy is higher than that of the voltage method, and no additional cost is required, but the disadvantage is that the actual current may not be known

Method used

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  • Method for preestimating battery residual capacity
  • Method for preestimating battery residual capacity
  • Method for preestimating battery residual capacity

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Embodiment Construction

[0015] refer to figure 1 , figure 1 It is a functional block diagram of the electronic device 10 of the present invention, the electronic device 10 can be a wireless mobile communication device, such as a mobile phone, etc., the electronic device 10 includes: a battery 12, used to provide the power of the electronic device 10; a storage module 14, used to store The battery management program 16 and the power management program 18 ; the display module 20 is used to display information about the remaining capacity of the battery 12 ; and the control module 22 is used to control the operation of the electronic device 10 .

[0016] refer to figure 2 , image 3 , Figure 4 , figure 2 , image 3 and Figure 4 Respectively, the present invention uses the battery management program 16 and the power management program 18 to estimate the remaining capacity of the battery 12. figure 2 , image 3 It is mainly the process executed by the battery management program 16, Figure 4...

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Abstract

A method for preestimating battery residual capacity includes the following steps that: (a) battery initial capacity value is determined; (b) the second voltage value of the battery is measured; (c) according to the second voltage as well as the maximum possible current value and the minimum possible current value of the battery and battery internal resistance value provided by a power source management program, the maximum possible voltage value and the minimum possible voltage value of the battery are calculated; (a) according to the maximum possible voltage value and the minimum possible voltage value of the battery as well as the relation table of voltage and residual capacity, the maximum possible residual capacity value and the minimum possible residual capacity value of the battery are calculated; (e) the maximum possible current value and the minimum possible current value of the battery are compared; (f) according to the comparative result obtained by the step (e) as well as the maximum possible residual capacity value and the minimum possible residual capacity value of the battery, the residual capacity of the battery is calculated.

Description

technical field [0001] The invention provides a method for estimating the remaining capacity of a battery. Specifically, it refers to a method that integrates the advantages of the state correction voltage method and the current integration method in a software manner to achieve a more accurate estimation of the remaining capacity of the battery without adding additional hardware. Background technique [0002] In modern society, many electronic products can use the electric energy stored in the battery to provide the energy needed for work, so that users can get rid of the shackles and restrictions of power cords. However, the power stored in the battery will be gradually consumed as the electronic product works, until it can no longer supply power normally. Therefore, it needs to be charged by an external power source so that the battery can continue to provide the energy required for the electronic product to work. At present, handheld devices (such as mobile phones, etc....

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 杜本权
Owner BENQ CORP
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