Battery charging control device and battery balance charging controller

A charge controller and battery balancing technology, applied in battery circuit devices, circuit devices, emergency protection circuit devices, etc., can solve the problem of high cost and achieve the effect of small chip area

Active Publication Date: 2012-05-30
GREEN SOLUTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the high cost of the existing digital battery balance controller, the present invention uses an analog battery charge control device to achieve battery charge balance

Method used

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  • Battery charging control device and battery balance charging controller
  • Battery charging control device and battery balance charging controller
  • Battery charging control device and battery balance charging controller

Examples

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Embodiment Construction

[0079] Please refer to figure 2 , is a battery balancing charge controller according to a first preferred embodiment of the present invention. The battery balance charging controller 100 is used to balance the charge of a first battery BAT1 and a second battery BAT2 , and includes a battery reference voltage generation unit 170 , a balance determination unit 180 and a voltage balance unit 190 . The negative terminal of the first battery BAT1 is electrically connected to the positive terminal of the second battery BAT2 to form a connection point, the positive terminal of the first battery BAT1 is coupled to a protection switch module 220, and the negative terminal of the second battery BAT2 grounded, wherein the first battery BAT1 has a first battery internal resistance Rb1, and the second battery BAT2 has a second battery internal resistance Rb2. One end of the protection switch module 220 is coupled to a charging power supply VCC and an output filter capacitor Cd2, and a ba...

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Abstract

The invention discloses a battery charging control device and a battery balance charging controller, which are used for achieving the balance charge of the battery. The battery balance charging controller comprises a battery reference voltage generation unit, a voltage balance unit and a balance judging unit; and whether a battery voltage difference of two adjacent battery units in a battery module is excessively large can be judged by using a reference voltage provided by the battery voltage generation unit. Meanwhile, the battery charging control device can also detect the voltage and the charging current of a battery module so as to judge the time for balancing the battery voltage. Then the voltage balance unit can be controlled by the balance judging unit, so that the charging currentof the battery unit with lower voltage is heavier than that of the battery unit with higher voltage and the battery voltage difference of various battery units is reduced.

Description

technical field [0001] The invention relates to a battery charge control device and a battery balance charge controller, in particular to a battery charge balance controller for balancing battery charge and a battery charge control device using the battery charge balance controller. Background technique [0002] With the development of portable electronic products, the demand for rechargeable batteries also arises. Rechargeable batteries include existing nickel-cadmium batteries, subsequent development of nickel-metal hydride batteries, lithium-ion batteries and the latest development of lithium polymer (Li-Polymer) batteries. Different types of rechargeable batteries provide different voltages, and the operating voltages required by portable electronic products are also different. Therefore, battery manufacturers will match the operating voltage of portable electronic products, and connect several batteries in series to form a battery module to provide the required voltage...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02J7/00H02H7/18
Inventor徐献松余仲哲李立民
OwnerGREEN SOLUTION TECH CO LTD