Over-discharge early-warning circuit for battery and electronic equipment

An electronic device and over-discharge technology, applied in the electronic field, can solve problems such as battery damage and achieve the effect of avoiding over-discharge

Inactive Publication Date: 2016-09-14
SHENZHEN TINNO WIRELESS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a battery over-discharge early warning circuit and electronic equipment, which can solve the problem of battery over-discharge causing damage to the battery after the electronic equipment is turned off because it cannot be charged in time

Method used

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  • Over-discharge early-warning circuit for battery and electronic equipment
  • Over-discharge early-warning circuit for battery and electronic equipment
  • Over-discharge early-warning circuit for battery and electronic equipment

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Embodiment Construction

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, a battery over-discharge warning circuit and electronic equipment provided by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] see figure 1 , the first embodiment of the battery over-discharge warning circuit of the present invention includes a core control circuit 11 and a voltage detection chip 12 connected to the core control circuit 11 .

[0029] The voltage detection chip 12 is set independently with respect to the core control circuit 11, and is used to detect the voltage of the battery BAT when the electronic device is in a shutdown state, and feeds back the voltage of the battery BAT to the core control circuit 11; the core control circuit 11 is used to receive the battery BAT The voltage of the battery BAT is compared with the preset warning voltage to is...

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Abstract

The invention discloses an over-discharge early-warning circuit for a battery. The over-discharge early-warning circuit is applied to electronic equipment. The over-discharge early-warning circuit comprises a core control circuit and a voltage detection chip which is connected with the core control circuit, wherein the voltage detection chip is arranged independently relative to the core control circuit, and used for detecting a voltage of the battery when the electronic equipment is in a shut-down state, and feeding back the voltage of the battery to the core control circuit; and the core control circuit is used for receiving the voltage of the battery, comparing the voltage of the battery with a preset early-warning voltage, and transmitting an early-warning signal. The invention also discloses electronic equipment. Through adoption of the over-discharge early-warning circuit, the voltage of the battery can be detected by the voltage detection chip after the electronic equipment is in the shut-down state, and the early-warning signal is transmitted when the voltage of the battery is up to the preset early-warning voltage to remind a user to charge immediately, so that battery over-discharge, and even damage to the battery due to aggravated over-discharge are avoided.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a battery over-discharge early warning circuit and electronic equipment. Background technique [0002] Batteries of electronic equipment usually have their own protection circuits, and the protection circuits of the batteries have functions of overcharge protection, overdischarge protection and short circuit protection. The over-discharge protection means that when the battery discharges below the cut-off voltage, such as 2.5V, the protection circuit starts protection to prevent the battery from further discharging to the load. At this time, if the battery is charged in time, the battery will not malfunction; if it is not charged in time, due to the leakage current of the battery protection circuit and the self-discharge of the battery cell itself, the battery voltage will further drop, that is, over put intensified. When the battery voltage drops to a certain level, the ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/00306H02J7/0031H02J7/0036
Inventor 徐雄文武红波倪漫利
Owner SHENZHEN TINNO WIRELESS TECH
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