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Circuit implementing method for reducing static power consumption of lithium battery

A technology of static power consumption and implementation method, which is applied in the direction of data processing power supply, etc., can solve the problems of ordinary users such as inconvenient operation, and achieve the effects of reducing the risk of over-discharge, reducing static power consumption, and prolonging the maintenance time

Active Publication Date: 2014-01-15
SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, regular lithium batteries have the function of preventing over-discharge protection. When the voltage of the lithium battery is too low, it will be automatically disconnected. In most cases, the over-discharge of the lithium battery will not cause damage to the lithium battery, but the internal circuit is locked.
Although over-discharged lithium batteries can be recovered by high-voltage constant-current charging, it is inconvenient for ordinary users to operate

Method used

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  • Circuit implementing method for reducing static power consumption of lithium battery

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Embodiment

[0017] Such as figure 1 As shown, "SYS_LOAD" is the input voltage of the notebook adapter or lithium battery, U1 and U2 are DC-DC integrated circuits, SYS_LOAD is converted to 5VSB by U1, and then converted to a constant 3.3VSB backup voltage by U2. 5VSB and 3.3VSB are the standby voltages of the notebook. As long as the notebook is powered by an adapter or a lithium battery, even when it is turned off, these two voltages will always exist, that is, the lithium battery will always be in a state of power consumption. The present invention adds two parts on the basis of the general notebook computer design: a micro-power consumption Hall switch circuit and a three-input OR gate circuit. figure 1 The dashed box part, where:

[0018] "ACP" is the adapter input indication signal, when there is an adapter input, the signal is high, otherwise it is low, the purpose is to detect whether there is an adapter input;

[0019] "5V" is the power supply voltage of the system after power-on...

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Abstract

The invention provides a circuit implementing method for reducing the static power consumption of a lithium battery. Structurally, in the event that a notebook computer is in a power-off state without an adapter, a Hall sensor is used to automatically turn off 3.3VSB standby voltage through magnetoelectric conversion by means of simple cover closing operation, so that the static power consumption of the lithium battery after the notebook computer is powered off is reduced. compared with the prior art, the circuit implementing method for reducing the static power consumption of the lithium battery has the advantages of greatly reducing the static power consumption of the lithium battery when the notebook computer is in the power-off state, prolonging the electric quantity holding time of the lithium battery and reducing the over-discharge risks of the lithium battery.

Description

technical field [0001] The invention relates to a battery protection circuit, in particular to a circuit implementation method for prolonging the power maintenance time of a lithium battery and reducing the static power consumption of the lithium battery. Background technique [0002] At present, lithium batteries are widely used in notebook computer products due to their advantages of large capacity, small size, and high safety, but at the same time, many notebook users have also encountered the problem of lithium battery over-discharge. Generally, regular lithium batteries have an over-discharge protection function, which will automatically disconnect when the voltage of the lithium battery is too low. In most cases, over-discharge of the lithium battery will not cause damage to the lithium battery, but the internal circuit is locked. Although an over-discharged lithium battery can be recovered by high-voltage constant-current charging, it is inconvenient for ordinary user...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/32
CPCY02E60/12Y02E60/10
Inventor 李瑞娥牛玉峰陈素梅王慧吴登勇孙超
Owner SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
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