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Power management system and method

A power management system and power management technology, applied in the direction of collectors, electric vehicles, electrical components, etc., can solve the problems of electronic equipment shutdown, battery can not provide working voltage, etc., to extend battery life, provide delay time, shorten switching effect of time

Active Publication Date: 2019-01-25
LEADCORE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a power management system and method, which are used to solve the problem in the prior art that when the battery voltage of the battery is lower than the working voltage of the circuit of the whole machine, the battery cannot provide the working voltage and the electronic device shuts down

Method used

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Embodiment 1

[0024] Such as figure 1 As shown, the present invention provides a power management system. The power management system 1 is a system 1 including circuits and even software installed between a battery 2 and a power management unit (PMU) 3 in an electronic device. Wherein, the power management unit 3 has multiple input terminals and multiple output terminals, the input terminals can receive the battery voltage from the battery, and the output terminals are connected to the circuit units / chips required to be powered. Since the power supply voltages of the circuit units / chips are not completely the same, the power management unit 3 can perform corresponding step-up / step-down processing for the received voltage.

[0025] The electronic device refers to a device that is powered by a battery and includes chips / circuit units of different supply voltages, including but not limited to: mobile phones, tablet computers, notebook computers, wearable electronic devices, and the like.

[...

Embodiment 2

[0058] Such as image 3 As shown, the present invention also provides a battery management method. The battery management method is mainly executed by a power management system. The power management system is installed in an electronic device including a battery and a power management unit (PMU). Wherein, the power management unit has a plurality of input terminals and a plurality of output terminals, the input terminals can receive the battery voltage from the battery, and the output terminals are connected to circuit units / chips to be powered. Since the power supply voltages of the circuit units / chips are not completely the same, the power management unit can perform corresponding step-up / step-down processing for the received voltage.

[0059] In step S1, the power management system outputs an enable signal based on a comparison result between the battery voltage obtained from the battery and a preset voltage.

[0060] Specifically, the power management system can use a m...

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Abstract

The present invention provides a power supply management system and method used for an electronic device containing a battery and a power supply management unit. The system comprises a comparison unit of which the negative input end is connected with the battery and the positive input end accesses a preset voltage, wherein the comparison unit is used for outputting an enabling signal based on a comparison result of a battery voltage received by the negative input end and a preset voltage; a boost unit of which the enabling end is connected with the output end of the comparison unit, the input end is connected with the battery and the output end is connected with the power supply management unit, wherein the boost unit is used for rising and outputting the battery voltage based on the enabling signal; a time delay unit in parallel connection between the output end of the battery and the output end of the boost unit and used for switching the voltage provided by the battery to the power supply management unit to the voltage provided by the boost unit to the power supply management unit after the boost unit boosts to a preset output voltage. According to the present invention, the endurance time of the electronic device can be prolonged.

Description

technical field [0001] The invention relates to the technical field of power supplies of electronic equipment, in particular to a power supply management system and method. Background technique [0002] The short battery life of electronic devices has become one of the most important issues affecting user experience. For smart devices (such as mobile phones, etc.), the battery life is basically 1 day, and users need to charge them anytime, anywhere. [0003] In fact, the reason for the active shutdown of the electronic device is that the voltage provided by the power management unit therein cannot meet the normal operation of the whole circuit, and the electronic device is set to shut down according to the voltage to protect the hardware in the electronic device. The shutdown voltage is around 3.5v. In fact, when the battery voltage is equal to 3.5V, the remaining capacity of the battery is about 5% of the full capacity of the battery. Taking a 3000mAH lithium battery as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/10
Inventor 朱建荣宋捷
Owner LEADCORE TECH
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