Power management system and operating method thereof

Patent metadata

Field	Value
Publication number	US-11223214-B2
Application number	US-202016951842-A
Country	US
Kind code	B2
Filing date	Nov 18, 2020
Priority date	May 31, 2018
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A power management system includes a battery charging system, a power supplying system, a first switching module, and a second switching module. The power management system is switched between the battery charging system and the power supplying system via the first switching module and the second switching module. With a charging electric energy generated by the waveform generating module, the battery charging system could restore the aging battery or the battery with degraded performance to a better state when the batteries are charging. By sensing a battery state of batteries, the power supplying system provides a supplementing power to the batteries, and the supplementing power and a power of the batteries could be supplied to a load together.

First claim

What is claimed is:

1. An operating method of a battery charging system, wherein said battery charging system is adapted to charge at least one battery, and said battery charging system comprises a waveform generating module, a sensing module, and a control device; wherein said waveform generating module has a power source side and a load side, wherein said power source side is electrically connected to a power source, and said load side is electrically connected to at least one battery; said sensing module is electrically connected to at least one battery; said control device is electrically connected to said waveform generating module and said sensing module; and said operating method comprising steps of:
A. sensing a plurality of battery states of said at least one battery by said sensing module to obtain a parameter value corresponding to each of the battery states;
B. controlling said waveform generating module by said control device according to the parameter values sensed by said sensing module, so that said waveform generating module converts the power sent from said power source into a plurality of charging waveforms corresponding to the parameter values and mixes the charging waveforms to form a charging electric energy having a composite waveform; and
C. sending the charging electric energy to said at least one battery via said load side.

2. The operating method of claim 1 , wherein the charging waveforms include at least one of a square wave, a pulse wave, a sine wave, and a triangular wave.

3. The operating method of claim 1 , wherein the battery states include a direct-current internal resistance (DCIR); in step A, said sensing module senses the DCIR of said at least one battery to obtain the parameter value corresponding to the DCIR; in step B, setting an amplitude of the charging electric energy according to the parameter value.

4. The operating method of claim 1 , wherein the battery states include a state of health (SOH); in step A, said sensing module senses the SOH of said at least one battery to obtain the parameter value corresponding to the SOH; in step B, setting an offset voltage according to the parameter value.

5. The operating method of claim 1 , wherein the battery states include an alternating current internal resistance (ACIR); in step A, said sensing module senses the ACIR of said at least one battery to obtain the parameter value corresponding to the ACIR; in step B, setting a frequency of the charging electric energy according to the parameter value.

6. The operating method of claim 1 , wherein said control device further comprises a data storage unit and a computing unit, and, after step C further comprising steps of: storing the parameter values and a plurality of charging data into said data storage unit, and computing a relation between each of the parameter values and the corresponding charging data by said computing unit.

7. The operating method of claim 1 , wherein after step C further comprising a step of: repeating step A1, step A2, and step A3 by sensing a charging power of said at least one battery or according to a charging time interval of said at least one battery.

Assignees

• Univ Nat Taipei Technology

Inventors

• Huang Kuohsiu David

Classifications

• H02J7/50

  acting upon multiple batteries simultaneously or sequentially · CPC title

• H02J7/875 Primary

  Charging or discharging for charge maintenance, battery initiation or rejuvenation · CPC title

• H02J7/663

  using battery or load disconnect circuits (H02J9/002 takes precedence) · CPC title

• H02J7/0047

  Electricity · mapped topic

• H02J7/0021 Primary

  Electricity · mapped topic