Battery charging apparatus as well as control method thereof

A battery charging and charging current technology, applied in the field of power supply, can solve problems such as voltage fluctuations and equipment instability

Active Publication Date: 2008-10-08
ACTIONS ZHUHAI TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide a battery charging device and its control method, aiming to solve the problem in the prior art that voltage fluctuations during the charging current adjustment process lead to instability of the entire device

Method used

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  • Battery charging apparatus as well as control method thereof
  • Battery charging apparatus as well as control method thereof
  • Battery charging apparatus as well as control method thereof

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] The embodiment of the present invention integrates a plurality of switching tubes and resistors in the charging current control circuit, and controls the switching on and off of the switching tubes by setting the value of the general register, thereby gradually adjusting the current charging current, so that the voltage of the charging power source drops smoothly / rise, which solves the problem that the existing technology causes voltage fluctuations during the charging current adjustment process and causes the entire device to be unstable.

[0027] image 3 It shows a logical structure di...

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Abstract

The invention is suitable for power supply field, providing a battery charging device and control method thereof, which comprises a charging circuit having a charging current setting end for charging battery based on charging current of the charging current setting end; a charging current control circuit which is connected with the charging current setting end for gradually adjusting the charging current based on equivalent resistance value of the charging current control circuit; a general purpose register circuit which is connected with the charging current control circuit for controlling the equivalent resistance value by setting value of the general purpose register. The invention integrates a plurality of switch pipes and resistances in the charging current control circuit by setting the value of the general purpose register to control on and off of the switch pipes, thereby gradually adjusting current chanrging current to make the voltage of the charging power supply smoothly rise and decline and settle the problom that the whole equipment is not stable caused by the voltage fluctuation in the cource of adjusting the charging current in prior art.

Description

technical field [0001] The invention belongs to the field of power supplies, in particular to a battery charging device and a control method thereof. Background technique [0002] With the development of electronic technology, more and more portable electronic products have entered daily life, such as MP3 players, mobile phones, digital cameras, etc. High-end electronic products generally use batteries with better energy storage performance for power supply. At present, due to the different load capacity and load fluctuation characteristics of the charging power supply (Universal Serial Bus USB power supply or transformer, etc.), only the matching charging power supply can be used on the same portable device, or a charging power supply that is more compatible with the portable device can be used. The charging power supply has a larger load capacity and better load fluctuation characteristics. [0003] Prior art 1 adopts the constant current-constant voltage method to charge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH02J7/0072H02J7/00712
Inventor 肖丽荣李深远
Owner ACTIONS ZHUHAI TECH CO
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