Power supply module and power supply method using the same

Patent metadata

Field	Value
Publication number	US-10305308-B2
Application number	US-201615176173-A
Country	US
Kind code	B2
Filing date	Jun 8, 2016
Priority date	Jul 20, 2015
Publication date	May 28, 2019
Grant date	May 28, 2019

Abstract

The power supply module includes a switching power circuit, a switching unit, a power storage unit and a control unit. The switching power circuit is coupled between an input terminal and an output terminal, and used to convert a first voltage to a second voltage. The switching unit is connected to the switching power circuit in parallel. The power storage unit is coupled to the output terminal. The control unit is coupled to the switching unit and controls the switching unit to turn on selectively according to a detecting signal corresponding to a charging or discharging status of the power storage unit to output the first voltage to the output terminal.

First claim

What is claimed is:

1. A power supply module, comprising:
a switching power circuit, coupled between an input terminal and an output terminal, configured to convert a first voltage to a second voltage;
a switching unit, connected to the switching power circuit in parallel;
a power storage unit, coupled to the output terminal; and
a control unit, coupled to the switching unit, configured to control the switching unit to turn on selectively according to a detecting signal corresponding to a charging or discharging status of the power storage unit to output the first voltage to the output terminal, and configured to switch the switching unit to turn on to output the first voltage to the output terminal when it is detected that the power storage unit is in the discharging status.

2. The power supply module according to claim 1 , further includes a protective switch coupled between the power storage unit and the output terminal, the protective switch configured to selectively turned on or turned off according to the detecting signal to control the power storage unit to be charged or discharged.

3. The power supply module according to claim 1 , further includes:
a sensing element, coupled to the power storage unit, configured to sense the charging or discharging status of the power storage unit; and
a detection unit, coupled to the sensing element and the control unit, configured to output the detecting signal to the control unit according to the charging or discharging status.

4. The power supply module according to claim 1 , wherein the switching power circuit includes:
a first switch;
a second switch, coupled to the first switch;
a charging control unit, coupled to the first switch and the second switch, configured to generate a first pulse signal and a second pulse signal to selectively control the first switch and the second switch to turn on or turn off;
an inductance, coupled to the first switch and the second switch; and
a capacitance, coupled to the inductance.

5. The power supply module according to claim 4 , wherein the charging control unit is further configured to selectively control the first switch and the second switch to turn on or turn off according to the detecting signal.

6. The power supply module according to claim 3 , wherein the detection unit is further configured to determine the load status of the power supply module according to the charging or discharging status of the power storage unit, when the load status is heavy, the control unit controls the first switch to turn on and the second switch to turn off.

Assignees

• Asustek Comp Inc

Inventors

• Tsai Ming-Ting
• Tu Wei-Chen
• Hung Hsiang-Jue

Classifications

• H02M3/158

  including plural semiconductor devices as final control devices for a single load · CPC title

• H02J7/00

  Circuit arrangements for charging or discharging batteries or for supplying loads from batteries · CPC title

• H02J7/342

  The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging (with circuits for polarity protection H02J7/68) · CPC title

• H02J7/52

  for charge balancing, e.g. equalisation of charge between batteries · CPC title

• H02J7/90

  Regulation of charging or discharging current or voltage · CPC title