Method for estimating available capacitor of battery and power management apparatus

A power management device, battery voltage technology, applied in battery circuit devices, circuit devices, measurement devices, etc., can solve problems such as inability to effectively and accurately estimate battery usable capacity, battery aging, errors, etc., and achieve effective and correct usable capacity. Effect

Inactive Publication Date: 2017-08-11
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the battery capacity estimation / prediction process is based on the rated capacity of the battery and the battery has aged, this will inevitably lead to errors
Some traditional schemes have been used to estimate the available capacity of the battery, but the traditional schemes still cannot effectively and accurately estimate the available capacity of the battery

Method used

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  • Method for estimating available capacitor of battery and power management apparatus
  • Method for estimating available capacitor of battery and power management apparatus
  • Method for estimating available capacitor of battery and power management apparatus

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Embodiment Construction

[0018] Certain terms are used in the specification and the claims that follow to refer to particular elements. It should be understood by those of ordinary skill in the art that electronic device manufacturers may refer to the same component by different nouns. The present specification and subsequent claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as a basis for differentiation. References to "comprising" throughout the specification and the following claims are open-ended terms and should be interpreted as "including but not limited to". Furthermore, the term "coupled" herein includes any means of direct and indirect electrical connection. Therefore, if it is described herein that the first device is electrically connected to the second device, it means that the first device can be directly connected to the second device or indirectly connected to the second device through other devices or con...

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Abstract

The invention provides a method for estimating the available capacity of a battery and a power management apparatus. The method herein includes the following steps: determining whether a battery is within a specified operation range that is different from the normal operation range of the battery; when the battery is within the specified operation range, generating a first capacity percentage of the battery, wherein the first capacity percentage is defined by eight the depth of discharge or state of charge; computing, between the first capacity percentage and a second capacity percentage, the capacity provided by the battery or the capacity charged to the battery; and based on the first capacity percentage, the second capacity percentage and the computed capacity, estimating the available capacity. According to the invention, even when the battery is aging or used for many times, the method can effectively and accurately estimate the available capacity of the battery.

Description

technical field [0001] The present invention relates to the estimation and management of the available capacity of a battery, and more particularly, to a method and a power management apparatus for effectively and accurately estimating the available capacity of a battery. Background technique [0002] In general, battery devices age after repeated use, and the total capacity of the battery (ie, the battery's usable capacity) will decrease and differ from the battery's rated capacity. If the battery level estimation / prediction process is based on the rated capacity of the battery and the battery has aged, this will inevitably lead to errors. There have been some traditional schemes for estimating the available capacity of the battery, but the traditional schemes still cannot effectively and accurately estimate the available capacity of the battery. SUMMARY OF THE INVENTION [0003] In view of this, the present invention provides a method for estimating the available capaci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/387G01R31/3648G01R31/367H01M10/48G01R31/389G01R31/392H02J7/0048Y02E60/10H02J7/005G01R31/371H01M6/5083H01M10/4285H02J7/0036
Inventor 吴瑞骐庄家宥洪琬宜王睿
Owner MEDIATEK INC
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