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Power Management Circuits for Rechargeable Battery Packs

A battery pack and circuit technology, applied in battery circuit devices, charge equalization circuits, arrangement of multiple synchronous batteries, etc., can solve problems such as reducing the efficiency of back-and-forth charging/discharging, and the unutilized capacity of strong battery cells.

Active Publication Date: 2014-10-22
MARVELL ASIA PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the available capacity of strong cells is not utilized
Also, using a dissipative bypass device reduces the round-trip charge / discharge efficiency during charging

Method used

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  • Power Management Circuits for Rechargeable Battery Packs
  • Power Management Circuits for Rechargeable Battery Packs
  • Power Management Circuits for Rechargeable Battery Packs

Examples

Experimental program
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Embodiment Construction

[0056] The following description is merely exemplary in nature and is in no way intended to limit the disclosure, its application or uses. For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements. As used herein, the phrase "at least one of A, B, and C" should be construed to mean a logical (A or B or C), using a non-exclusive logical OR. It should be understood that method steps may be executed in different order without altering the principles of the present disclosure.

[0057] As used herein, the term "module" may refer to, include an Application Specific Integrated Circuit (ASIC), electronic circuit, processor (shared, dedicated, or group of processors) for executing one or more software or firmware programs and / or memory (shared, dedicated, or memory banks), combinational logic circuits, and / or other suitable components for providing the described functionality or as part of them.

[0058] The present disclosure rela...

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PUM

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Abstract

A charge-balancing system includes N circuits and a control module, where N is an integer greater than or equal to 1. Each of the N circuits includes first and second switches connected in series and an inductance having a first end connected between the first and second switches. The control module outputs control signals to control the first and second switches. A second end of the inductance of a first one of the N circuits is connected between two cells of a first pair of 2N series-connected cells of a battery stack. The first and second switches of the first one of the N circuits are connected in parallel to the first pair of 2N series-connected cells.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application No. 12 / 725683, filed March 17, 2010, and claims the benefit of US Provisional Application No. 61 / 166,590, filed April 3, 2009. The disclosure of the aforementioned application is incorporated herein by reference in its entirety. technical field [0003] The present disclosure relates to rechargeable batteries, and more particularly to power management circuits for rechargeable battery packs. Background technique [0004] The background description provided herein is for the purpose of generally presenting the context of the disclosure. Certain work of the named inventors (work described in this background section) and that which is not otherwise described in the specification as prior art at the time of filing, is neither express nor implied is considered to be prior art with respect to this disclosure. [0005] Rechargeable batteries are used in many applic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0014Y02T10/7055Y02T10/70
Inventor P·苏塔尔德雅
Owner MARVELL ASIA PTE LTD