Real time clock battery charge/discharge system of notebook, charge/discharge control method, and notebook real time clock power supply method

Patent metadata

Field	Value
Publication number	US-10599200-B2
Application number	US-201815942755-A
Country	US
Kind code	B2
Filing date	Apr 2, 2018
Priority date	Jun 13, 2017
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

The present disclosure relates to a Real Time Clock (RTC) battery charge/discharge system, a charge/discharge control method, and a notebook RTC power supply method of a notebook used for date and time synchronization of an RTC of a notebook computer.

First claim

What is claimed is:

1. A Real Time Clock (RTC) battery charge/discharge system of a notebook, the system comprising:
a cooler including a driving motor and a cooling fan for receiving power from a main battery and discharging a heat generated when the notebook is driven;
an RTC battery configured to supply power to allow a notebook RTC to operate;
a small power generation motor configured to generate power by driving the cooler and supply the generated power to the RTC battery; and
a control unit configured to control charge and discharge of the RTC battery according to a drive state of the notebook and control supply and interruption of power from the main battery to the notebook RTC.

2. The system of claim 1 , wherein the small power generation motor comprises a stator and a rotator, and
one side of the rotator is mechanically connected to a rotating shaft of the cooling fan.

3. The system of claim 1 , wherein the small power generation motor further comprises a conversion converter configured to convert a generated AC power into DC power.

4. The system of claim 1 , wherein the RTC battery is a pouch type battery in which a negative electrode plate and a positive electrode plate, an electrode assembly having a separation layer interposed between the negative electrode plate and the positive electrode plate, and a charge/discharge control module for controlling charge/discharge are received.

5. The system of claim 1 , wherein when the notebook is driven, the RTC battery is charged by a DC power generated by the small power generation motor through an operation of the cooler, and when the notebook is not driven, the RTC battery supplies the charged power as DC power to the RTC of the notebook.

6. The system of claim 1 , wherein
when the notebook is driven, the control unit supplies power from the main battery to the RTC of the notebook, and switches the RTC battery to a charge state to charge the RTC battery by a power generated by the small power generation motor, and
when the notebook is not driven, the control unit cuts off a power supplied from the main battery to the RTC of the notebook, and switches the RTC battery to a discharge state to supply power from the RTC battery to the RTC of the notebook.

7. The system of claim 1 , wherein charge/discharge control and power supply/cut-off operations of the control unit are determined by a software module mounted on a system ROM of the notebook.

8. A method of supplying power to a Real Time Clock (RTC) of a notebook, the method comprising:
an RTC battery discharge operation for supplying power from an RTC battery to the RTC of the notebook while the notebook is power-off and the drive is stopped;
an RTC power conversion operation for, when the notebook is driven, cutting off the power supplied from the RTC battery to the RTC of the notebook by switching the RTC battery to a charge state in the control unit, and supplying power from a main battery of the notebook to the RTC of the notebook;
a cooler running operation for operating a cooler of the notebook;
a power generation operation for generating power in a small power generation motor interlocked with the cooler when the cooler is operated; and
an RTC battery charge operation for supplying the power generated by the small power generation motor to the RTC battery switched to a charge state.

9. A method of controlling charge/discharge of a Real Time Clock (RTC) battery according to a notebook drive state, the method comprising:
a notebook drive state check operation for checking a notebook drive state by determining whether a notebook power is on or off;
a power generation operation for switching the RTC battery to a charge state when the notebook is on and generating power by a small power generation motor interlocked with a cooler of the notebook;
an RTC battery charge operation for supplying the power generated by the power generation operation to the RTC battery to charge the RTC battery; and
an RTC battery discharge operation for switching the RTC battery to a discharge state when the notebook is off and supplying a discharge power to the RTC of the notebook.

Assignees

• Lg Chemical Ltd

Inventors

• Kwon Jae Kuk
• Son Young Su
• Sung Jong Gyu
• Lee Young Kyu

Classifications

• H02K7/003

  Couplings; Details of shafts (means for mounting rotors on shafts H02K1/28) · CPC title

• H02K7/14

  Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) · CPC title

• G06F1/1635

  Details related to the integration of battery packs and other power supplies such as fuel cells or integrated AC adapter · CPC title

• G06F1/263 Primary

  Arrangements for using multiple switchable power supplies, e.g. battery and AC (G06F1/30 takes precedence) · CPC title

• H01M10/0436

  Small-sized flat cells or batteries for portable equipment · CPC title