Charging system and charging circuit for batteries, as well as method for controlling charging of the battery

A charging circuit and battery charging technology, applied in the direction of battery circuit devices, circuit devices, collectors, etc., can solve the problems of system overheating, reduce the charging efficiency of the battery charging system, etc., and achieve the effect of improving charging efficiency

Active Publication Date: 2010-06-30
AOTU ELECTRONICS WUHAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This overheating phenomenon may trigger the overheating protection mechanism of the battery charging system, causing the battery charging system to stop charging, and continue charging until the system temperature drops to a reasonable value
In some cases, the battery cha

Method used

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  • Charging system and charging circuit for batteries, as well as method for controlling charging of the battery
  • Charging system and charging circuit for batteries, as well as method for controlling charging of the battery
  • Charging system and charging circuit for batteries, as well as method for controlling charging of the battery

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Example Embodiment

[0017] A detailed description will be given below of embodiments of the present invention. While the invention will be described with reference to the examples, it should be understood that this is not intended to limit the invention to these examples. On the contrary, the invention is intended to cover various alternatives, modifications and equivalents as defined within the spirit and scope of the invention as defined by the appended claims.

[0018] Furthermore, in the following detailed description of the present invention, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, one skilled in the art will understand that the present invention may be practiced without these specific details. In other instances, well-known solutions, processes, components and circuits have not been described in detail so as to highlight the subject matter of the present invention.

[0019] figure 2 Shown is a structural blo...

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PUM

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Abstract

The invention discloses a charging system and a charging circuit for batteries, as well as a method for controlling charging of the battery. The battery charging system comprises a charging switch for conducting charging current to the battery, a first and a second amplifiers coupled to the charging switch. The first amplifier is used for regulating the charging current according to the power consumption of the charging switch. The second amplifier is used for regulating the charging current according to the voltage of the battery. When the voltage of the battery is less than the predetermined voltage threshold, the charging current through the charging switch is regulated by the first amplifier, so that the power consumption of the charging switch is maintained constant. When the voltageof the battery is larger than the predetermined voltage threshold, the charging current through the charging switch is regulated by the second amplifier, so that the voltage of the battery is maintained constant. Compared with the prior art, during the entire charging process, overheating phenomenon will not occur in the battery charging system even if the difference between the charging power voltage and the battery voltage is relatively large, so that the charging efficiency is improved.

Description

technical field [0001] The invention relates to a battery system, in particular to a battery charging system, a charging circuit and a method for controlling battery charging. Background technique [0002] A traditional battery charging system, for example, a lithium battery charging system, includes three charging stages, namely a pre-charging stage, a constant current charging stage and a constant voltage charging stage. Such as figure 1 Shown is a charging graph 100 for a conventional battery charging system during these three charging stages. [0003] exist figure 1 1 , the charging graph 100 includes a charging current graph 102 of a battery cell and a voltage graph 104 of a battery cell. During the above three charging stages, the charging current graph 102 changes as the voltage graph 104 changes. In the pre-charging stage, a small pre-charging current is used to charge the battery cells, as shown in the charging current graph 102 , and at the same time, the volta...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCY02B40/90H02J7/0072H02J7/00714H02J7/007182Y02B40/00
Inventor 栗国星董鑫
Owner AOTU ELECTRONICS WUHAN
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