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Battery charging method and device

A battery charging and rechargeable battery technology, applied in battery circuit devices, circuit devices, transportation and packaging, etc., can solve problems such as damage to battery performance and service life, battery overcharge, etc., to extend effective use time, reliable control functions, Avoid the effect of overcharging

Inactive Publication Date: 2006-01-25
TECH-POWER ELECTRONICS (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the rechargeable battery is fully charged or is about to be fully charged, the charging device will charge it for a fixed time, which may cause the battery to be overcharged and damage the performance and service life of the battery.

Method used

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  • Battery charging method and device

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Embodiment Construction

[0040] The present invention will be further described below with reference to the accompanying drawings and in conjunction with specific embodiments.

[0041] a battery charger

[0042] This battery charger includes

[0043] A charging power supply circuit 2 that provides charging current to the rechargeable battery 1;

[0044]A charging current adjustment circuit 3 for adjusting the charging current output by the charging power supply circuit 2;

[0045] A battery internal resistance measurement circuit that connects the input terminal to the positive and negative electrodes of the rechargeable battery 1 and can calculate the battery voltage difference;

[0046] A negative voltage difference identification circuit 4 that identifies the negative voltage difference and sends a control signal to stop charging once the negative voltage difference is identified;

[0047] The corresponding output terminals are respectively connected to the charging process control circuit 5 of ...

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Abstract

This invention discloses a battery charging method and a device including a battery internal resistance test circuit, a negative voltage difference identifying circuit and a charge process control circuit identifying the negative voltage difference and sending control signals to stop charging, a delay identifying control circuit between the internal test circuit and the negative voltage difference identifying circuit, said delay identifying control circuit controls the negative voltage difference identifying circuit to begin identifying the negative voltage difference appeared in the voltage.

Description

technical field [0001] The invention relates to a charging circuit device of a battery pack, in particular to a battery charging method and device capable of accurately distinguishing the state of the battery not yet fully charged, about to be fully charged or fully charged. Background technique [0002] Portable electronic products are very popular among modern people for their outstanding features such as small size and easy to carry. It can make people's work, study and entertainment free from time and geographical constraints, and significantly improve work efficiency and quality of life. Portable electronic products widely use rechargeable batteries, which have the advantages of repeated charging and large capacity. Some of the charging devices used have been intelligentized, and can automatically charge and stop charging, basically without manual intervention. Convenience. However, the problems of not being fully charged and overcharging are ubiquitous in the existin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/04
Inventor 散保超喻德茂范继光
Owner TECH-POWER ELECTRONICS (SHENZHEN) CO LTD
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