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Charging circuit for parallel charging in multiple battery systems

A battery charging and charging circuit technology, applied to battery circuit devices, circuit devices, collectors, etc., can solve the problem of increasing battery charging time

Inactive Publication Date: 2006-03-22
O2 MICRO INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For those charging circuits that allow multiple batteries to be charged, only the total battery charging current is controlled and kept within a maximum limit, thereby increasing the battery charging time

Method used

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  • Charging circuit for parallel charging in multiple battery systems
  • Charging circuit for parallel charging in multiple battery systems
  • Charging circuit for parallel charging in multiple battery systems

Examples

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Embodiment Construction

[0018] FIG. 1 shows a simplified block diagram of an electronic device 100 that can be powered by any number of power sources 104 , 105 . These power sources include batteries 105 and a DC power source 104 . The battery 105 can be various types of rechargeable batteries, such as lithium-ion, nickel-cadmium, nickel-hydrogen batteries, and the like. The electronic device 100 can be various devices known in the art that can be powered by the power supply 104 or 105 such as portable electronic devices (notebook computers, mobile phones, pagers, personal digital assistants, etc.), electric vehicles, and power tools.

[0019] If the electronic device 100 is a notebook computer, it will include various components (not shown in FIG. 1 ) well known to those skilled in the art. For example, the notebook computer may include an input device for inputting data into the notebook computer, a central processing unit (CPU) or processor (such as Intel's Pentium processor) for executing instru...

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PUM

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Abstract

A charging circuit for controlling a system charging parameter provided to a host of rechargeable batteries, wherein the host of batteries includes at least a first battery and second battery that may be coupled in parallel. The charging circuit provides for fast charging of rechargeable batteries in parallel. Independent current and voltage sensing for each battery enables parallel charging of batteries at different charging currents. The charging circuit may be configured to accept either analog or digital signals from an associated power management unit.

Description

technical field [0001] The invention relates to a charging circuit, more specifically to a charging circuit for charging multiple parallel batteries. This application is a continuation of US Provisional Application No. 10 / 364,228, filed February 11, 2003, the teachings of which are incorporated herein by reference. This application also claims the benefit of U.S. Provisional Application No. 60 / 457,826, filed March 26, 2003, and U.S. Provisional Application No. 60 / 484,635, filed July 3, 2003, the teachings of which are also incorporated herein by refer to. This application is also a continuation of Application No. 10 / 618,910, filed July 14, 2003, which itself is a continuation of Application No. 10 / 328,446, filed December 23, 2002 (now U.S. Patent 6,611,129), Application No. 10 / 328,446 itself is a follow-up application to Application No. 09 / 948,828 (now U.S. Patent No. 6,498,461) filed September 7, 2001, both of which are required to be filed at Benefit of Application of US ...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCY02T10/7055
Inventor 康斯坦丁·布克法拉·坡贝斯库-斯塔内斯缇玛利安·尼古拉
Owner O2 MICRO INT LTD