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Device and method for managing power source

A technology of power supply and power supply control unit, which is applied in circuit devices, battery circuit devices, emergency power supply arrangements, etc., and can solve problems such as system defects and system failures

Inactive Publication Date: 2003-07-16
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

This phenomenon may cause a system failure or a fatal system defect

Method used

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  • Device and method for managing power source
  • Device and method for managing power source
  • Device and method for managing power source

Examples

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Embodiment Construction

[0014] figure 1 is a block diagram showing the structure of an apparatus for managing power sources according to the present invention. The device for managing power includes: a battery 100 , a power switching unit 101 , a power control unit 102 , a display unit 103 , a storage unit 104 , and a central processing unit 105 .

[0015] FIG. 2 is a flowchart representing a method for managing power sources according to the present invention. The method includes: in step 200, determining whether the battery voltage level is higher than a reference voltage level; in step 201, enabling the system to work normally; in step 202, determining whether the battery voltage level is higher than the power-off voltage level and lower than Reference voltage level; in step 203, make the system work normally; in step 204, determine whether the battery voltage level is lower than the power-off voltage level; in step 205, disconnect the system power supply; in step 206, within a predetermined peri...

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PUM

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Abstract

Provided are an apparatus and method for managing power, and more particularly, an apparatus and method for stably managing power by comparing a predetermined reference voltage level with a battery voltage level. The provided method for managing power includes (a) detecting the battery voltage level, which supplies power to a system after a predetermined period from the system being powered off, and comparing the battery voltage level with a reference voltage level, and (b) deciding the operation of the system in correspondence to the result of the comparison. According to the provided method, when the battery voltage level of the system is between the power off voltage level and the reference voltage level, the system is operated in the sleep mode using a minimum amount of power. When the battery voltage level is above the reference voltage level, the system is operated normally when a power switch is turned on. Consequently, the power and system are stably managed.

Description

technical field [0001] The present invention relates to an apparatus and method for managing power, and more particularly, to an apparatus and method for stably managing power by comparing a predetermined reference voltage level with a battery voltage level. Background technique [0002] A conventional battery-utilized system manages power by shutting down the system when the battery voltage level drops below a predetermined voltage level. In the case of continuous use of a battery powered system such as a mobile phone, the system is powered off when the battery voltage level drops below a predetermined voltage level. However, when the battery voltage level is detected after a specified period of time, the battery voltage level often charges above the power off level. [0003] Therefore, a conventional method for managing power is to repeatedly power on and power off after a short period of time in accordance with the charging to a voltage level above the power off level. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J9/00
CPCH02J2007/0067H02J7/0063H02J9/005Y04S20/20Y02B70/30H02J7/007182H02J9/00
Inventor 李东镐金翰成
Owner SAMSUNG ELECTRONICS CO LTD
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