Method of estimating remaining capacity and run-time of a battery device

A battery device and remaining capacity technology, applied in the direction of measuring devices, measuring electrical variables, measuring electricity, etc., can solve the problems of consuming battery energy, increasing estimation errors, reducing estimation speed, etc., to achieve small estimation errors, fast and accurate estimation operations Effect

Inactive Publication Date: 2011-09-28
EMEMORY TECH INC
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Problems solved by technology

As for reducing the error to 1% with the above-mentioned known method, the number of iterations will be significantly increased, which will lead to high computation and consume more battery power, and will reduce the estimation speed
It can be seen from the above that, in the operation of the known method, the estimation error will be increased due to the variation of the discharge current, and it is necessary to execute a high-intensity iterative procedure to accurately estimate the remaining capacity and remaining use time

Method used

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  • Method of estimating remaining capacity and run-time of a battery device
  • Method of estimating remaining capacity and run-time of a battery device
  • Method of estimating remaining capacity and run-time of a battery device

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Embodiment Construction

[0062]In order to make the present invention more obvious and easy to understand, the method for quickly and accurately estimating the remaining capacity and the remaining service time of the battery device according to the present invention will be described in detail below with specific examples in conjunction with the accompanying drawings, but the provided examples are not used In order to limit the scope covered by the present invention, and the numbering of the steps of the method flow is not used to limit the order of execution, any execution flow recombined by the method steps, resulting in a method with equal efficacy, is covered by the present invention .

[0063] image 3 A functional block diagram of a battery device 30 according to an embodiment of the present invention is shown. The battery device 30 can be arranged in a casing, and can be electrically connected to a notebook computer, so as to supply power for internal circuits and devices (such as hard disk an...

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Abstract

Estimating remaining capacity and remaining time of a battery device during discharging of the battery device includes determining initial state of charge of the battery device, determining discharge current of the battery device, utilizing a shooting end of discharge process to determine final state of charge corresponding to the discharge current, and determining the remaining capacity and the remaining time according to the final state of charge, the method in the invention compared with the prior art, is advantaged by less influence of estimation result of remaining capacity and run-time by discharge current, smaller estimation error, and less required recursive computation amount, namely, quicker and more accurate estimation operation.

Description

technical field [0001] The technical problem to be solved by the present invention is an estimation method, especially a method for estimating the remaining capacity and remaining service time of a battery device. Background technique [0002] With the development of science and technology, batteries have become an indispensable power source and are widely used in portable electronic devices such as multimedia products, mobile phones, and notebook computers. Generally speaking, for the convenience of use, the battery device usually has a battery power detection function to provide information such as its remaining capacity and remaining usage time to the user. The known battery power detection technology is based on the internal resistance tracking algorithm to track the change of the internal resistance of the battery under the steady current discharge state, and uses the relevant database to simulate the battery voltage to estimate the remaining capacity of the battery (Re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/3651G01R31/3658G01R31/361G01R31/367G01R31/3828G01R31/396
Inventor 高进兴陈俊铭左添仲
Owner EMEMORY TECH INC
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