CN100414479C - Method for protecting cells in notebook computer - Google Patents
Method for protecting cells in notebook computer Download PDFInfo
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- CN100414479C CN100414479C CNB2005100724339A CN200510072433A CN100414479C CN 100414479 C CN100414479 C CN 100414479C CN B2005100724339 A CNB2005100724339 A CN B2005100724339A CN 200510072433 A CN200510072433 A CN 200510072433A CN 100414479 C CN100414479 C CN 100414479C
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- battery
- discharge current
- event information
- embedded controller
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Abstract
The present invention discloses a protection method for a notebook computer battery; a current threshold value and event information are set by a system. The protection method comprises the following steps: the current discharge current of a battery is read by an embedded controller; the read current discharge current is compared with the current threshold value set by the system by the embedded controller, and according to a compared result, the corresponding event information set by the system is transferred to a basic input output system; after the event information is received by the basic input output system, corresponding measures corresponding to the event information are taken, and the event information is reported to operation system power management. The protection method for a notebook computer battery of the present invention has the advantage of convenient use, and users do not need to install a method system; as long as the users can correctly access an operation system via guidance, the notebook computer battery can be protected well.
Description
[technical field]
The present invention relates to a kind of guard method of battery, refer in particular to a kind of guard method that is used for the battery on the notebook computer.
[technical background]
For notebook computer, battery is the basic of its dirigibility and stability, and its usefulness is directly connected to the ability to work of notebook computer in lacking the environment of power supply.Mainstream Notebook standard configuration chargeable cell system, this system comprises rechargeable battery and power-supply management system etc.Realize that by powered battery mobile office is the key character that notebook computer is different from desktop computer, and limited battery capacity can't satisfy unlimited requirement service time certainly, and the hardware configuration that notebook computer is more and more higher is also increasing to battery consumption.Therefore will satisfy increasing power consumption, will guarantee certain service time simultaneously, increase the service life, some are saved electric energy and protect the new technology of battery just to seem extremely important so.
Heavy-current discharge is the maximum killer who influences the cells in notebook computer life-span, wreck and prolong serviceable life of battery for fear of battery, lasting charging current of maximum and maximum continuous discharge electric current to battery all will be limited in some specific scopes particularly big continuous discharge electric current having the greatest impact to battery life.In addition it is fast that the electric current conference causes battery temperature to rise, the temperature height.Therefore to reduce battery temperature in order reaching, to protect battery and prolong the battery purpose in serviceable life, so just need finish protection according to the power consumption of the suitable reduction of the difference system main hardware of environment for use to cells in notebook computer.
Mainly be that the upper procedure of taking to use notebook computer manufacturer to be provided realizes in existing cells in notebook computer resist technology, there is a shortcoming that needs user installation, occupying system resources in this.If this upper procedure is not installed, then can't realize effective protection to cells in notebook computer, greatly reduce the serviceable life and the service time of battery.
[summary of the invention]
The technical matters that institute of the present invention desire solves provide a kind of easy to use, need not user installation, as long as the user can correctly guide the guard method that enters the cells in notebook computer that operating system just can the good protection battery.
The technical solution adopted in the present invention is: a kind of guard method of cells in notebook computer; the default current threshold: request reduces the maximum continuous discharge current threshold of battery discharge current threshold value, battery of cpu frequency and display backlight brightness, the battery discharge current threshold value of hard closing system power supply; and setting event information: request reduces event information, releasing reduction cpu frequency and the event information of display backlight brightness of cpu frequency and display backlight brightness, the event information that Request System enters dormancy, and it may further comprise the steps:
Embedded controller reads the current discharge current of battery;
The discharge current that embedded controller is current with the battery that reads and the current threshold of described default compare respectively, and according to comparative result the event information of the described default of correspondence are passed to Basic Input or Output System (BIOS);
Basic Input or Output System (BIOS) is taked the corresponding measure of corresponding event information, and is reported to the operating system power management after receiving the event information that embedded controller transmits.
The technique effect that the present invention reached is: the protection of cells in notebook computer of the present invention is embedded into program in the bottom software Basic Input or Output System (BIOS); utilize existing resources such as operating system power management, Basic Input or Output System (BIOS) and embedded controller simultaneously; when finishing system hardware initialization, correct pilot operationp system; automatically finish the loading of cells in notebook computer resist technology, simple and practical, easy to operate.
[description of drawings]
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the flow chart of steps of the guard method of cells in notebook computer of the present invention.
[embodiment]
Used english nouns in the explanation is explained as follows earlier:
OSPM: operating system power management
BIOS: Basic Input or Output System (BIOS)
EC: embedded controller
POST: power-on self-test
AC: AC power
The present invention makes full use of existing resource OSPM, BIOS and the EC of notebook computer, under the cooperatively interacting of these resources, need not to load any other upper procedure is installed, and finishes protection to cells in notebook computer from the angle of bottom software.
We know that in the hardware system of whole notebook computer, CPU and display screen are the hardware of two consumed powers of maximum.Therefore, when notebook computer used powered battery, the present invention reduced the power consumption of total system emphatically from these two hardware, reduced the discharge current of battery.
Notebook computer of the present invention makes battery-powered the time, and the cooperation by OSPM, BIOS and EC reduces the maximum frequency of CPU and the backlight illumination of display screen; And when notebook computer uses the power supply of interchange (AC) power supply, recover the maximum frequency of CPU and the backlight illumination of display screen.
Next see also process flow diagram shown in Figure 1,, define Several Parameters at first here for the convenience of narrating below:
I: the discharge current that battery is current
I
1: request reduces the battery discharge current threshold value of cpu frequency, display backlight brightness
I
2: the maximum continuous discharge current threshold of battery
I
3: the battery discharge current threshold value of hard closing system power supply
Q
1: request reduces the incident of cpu frequency, display backlight brightness
Q
2: remove the incident that reduces cpu frequency, display backlight brightness
Q
3: Request System enters the incident of dormancy
Realization is as follows to the process of cells in notebook computer protection:
1.BIOS and set up an interface between the EC;
2.BIOS obtain the powering mode of current system from EC by interface.If be the power supply of AC pattern, then system held current state; If be the battery mode power supply; then BIOS limits a certain suitable performance rate of CPU maximum frequency under its maximum natural frequency by preserve the cpu performance state that gets up in the POST of system process; promptly under battery powered mode; under the situation that does not influence user's use, reach temperature and the battery temperature that has both reduced system by restriction CPU maximum frequency; reduce the discharge current of battery again, thereby protected battery.
3.EC read the current discharge current i of battery, if EC reads the value of i between I
1And I
2Between the time, EC sends Q
1Event information is when BIOS receives this Q
1After the event information, can take certain measure to reduce the backlight illumination of current frequency of CPU and display screen, and report to OSPM.At this moment, the user is the power consumption of active adjustment reduction total system artificially, and EC reads the value of i less than I
1, promptly the current discharge current of battery is in safe range, and EC sends Q
2Incident.When BIOS receives Q
2After this incident, can remove the backlight illumination that reduces current frequency of CPU and display screen, report to OSPM simultaneously.
3. after system reduced the backlight illumination of current frequency of CPU and display screen, EC read the value of i less than I
1, promptly the current discharge current of battery is in safe range, and EC sends Q
2Incident.When BIOS receives Q
2After this incident, can remove the backlight illumination that reduces current frequency of CPU and display screen, report to OSPM simultaneously.
4. if EC reads the value of i between I
2And I
3Between the time, EC sends Q
3Incident.When BIOS receives Q
3After this incident, for the data of protecting the user using are not destroyed, BIOS will notify OSPM, and Request System is made a forcible entry into dormant state.
5. if Request System enters the dormant state failure, EC reads the value of i greater than I
3, EC will close the power supply of total system by force so, make system enter off-mode.
Claims (2)
1. the guard method of a cells in notebook computer; it is characterized in that: the default current threshold: request reduces the maximum continuous discharge current threshold of battery discharge current threshold value, battery of cpu frequency and display backlight brightness, the battery discharge current threshold value of hard closing system power supply; and setting event information: request reduces event information, releasing reduction cpu frequency and the event information of display backlight brightness of cpu frequency and display backlight brightness, the event information that Request System enters dormancy, and it may further comprise the steps:
Step 1: set up an interface between Basic Input or Output System (BIOS) and the embedded controller;
Step 2: Basic Input or Output System (BIOS) obtains the powering mode of current system by interface from embedded controller,
If be AC mode power supply, then system held current state;
If be the battery mode power supply, then BIOS limits a certain performance rate of CPU maximum frequency under its maximum natural frequency by preserve the cpu performance state that gets up in the POST of system process, and execution in step 3～5 then;
Step 3: embedded controller reads the current discharge current of battery;
Step 4: the discharge current that embedded controller is current with the battery that reads and the current threshold of described default compare respectively,
When value that embedded controller is read the current discharge current of battery when request reduces between the battery discharge current threshold value of cpu frequency and display backlight brightness and the maximum continuous discharge current threshold of battery, the request of sending reduces the event information of cpu frequency and display backlight brightness to embedded controller to Basic Input or Output System (BIOS);
When the value of reading the current discharge current of battery when embedded controller reduced the battery discharge current threshold value of cpu frequency and display backlight brightness less than request, embedded controller sent to Basic Input or Output System (BIOS) and removes the event information that reduces cpu frequency and display backlight brightness;
When value that embedded controller is read the current discharge current of battery was between the battery discharge current threshold value of maximum continuous discharge current threshold of battery and hard closing system power supply, embedded controller sent the event information that Request System enters dormancy to Basic Input or Output System (BIOS);
Step 5: Basic Input or Output System (BIOS) is taked the corresponding measure of corresponding event information, and is reported to the operating system power management after receiving the event information that embedded controller transmits.
2. the guard method of cells in notebook computer as claimed in claim 1; it is characterized in that: when described step 4 also comprises the value of reading the current discharge current of battery when embedded controller greater than the battery discharge current threshold value of hard closing system power supply, will close the power supply of total system by force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100724339A CN100414479C (en) | 2005-05-14 | 2005-05-14 | Method for protecting cells in notebook computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100724339A CN100414479C (en) | 2005-05-14 | 2005-05-14 | Method for protecting cells in notebook computer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1862449A CN1862449A (en) | 2006-11-15 |
| CN100414479C true CN100414479C (en) | 2008-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100724339A Expired - Fee Related CN100414479C (en) | 2005-05-14 | 2005-05-14 | Method for protecting cells in notebook computer |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685338B (en) * | 2008-09-27 | 2012-08-22 | 联想(北京)有限公司 | Method of saving system resources of notebook computer and notebook computer |
| CN102214846A (en) * | 2010-04-09 | 2011-10-12 | 欣旺达电子股份有限公司 | Method for reducing consumption of battery management system and low-consumption battery management system |
| CN103813420A (en) * | 2012-11-07 | 2014-05-21 | 辉达公司 | Tablet electric equipment and current control system thereof |
| CN107340846B (en) * | 2017-08-31 | 2023-07-14 | 广东虹勤通讯技术有限公司 | Power-down prevention logic circuit and notebook computer |
| CN111240458B (en) * | 2020-01-02 | 2022-09-13 | 上海闻泰信息技术有限公司 | CPU frequency reduction method, system and portable computer |
| CN111208896B (en) * | 2020-01-06 | 2023-10-03 | 西安闻泰电子科技有限公司 | Intel notebook performance optimization method and system based on power consumption parameters |
| CN112328065A (en) * | 2020-10-26 | 2021-02-05 | 山东超越数控电子股份有限公司 | Method for controlling power consumption of notebook computer when power is switched on |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020125858A1 (en) * | 2001-03-08 | 2002-09-12 | Hubert Kuo | Apparatus for delivering the power status data of a smart battery |
| CN1399390A (en) * | 2001-07-27 | 2003-02-26 | 神基科技股份有限公司 | Forced shut-off device and method for high-grade power interface assembly |
| CN1448855A (en) * | 2002-04-02 | 2003-10-15 | 株式会社东芝 | Power consumption control method and information processing device |
| CN1525278A (en) * | 2003-02-28 | 2004-09-01 | ��ʽ���綫֥ | Electronic apparatus and system control method for the electronic apparatus |
-
2005
- 2005-05-14 CN CNB2005100724339A patent/CN100414479C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020125858A1 (en) * | 2001-03-08 | 2002-09-12 | Hubert Kuo | Apparatus for delivering the power status data of a smart battery |
| CN1399390A (en) * | 2001-07-27 | 2003-02-26 | 神基科技股份有限公司 | Forced shut-off device and method for high-grade power interface assembly |
| CN1448855A (en) * | 2002-04-02 | 2003-10-15 | 株式会社东芝 | Power consumption control method and information processing device |
| CN1525278A (en) * | 2003-02-28 | 2004-09-01 | ��ʽ���綫֥ | Electronic apparatus and system control method for the electronic apparatus |
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| CN1862449A (en) | 2006-11-15 |
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Addressee: Zhou Yunming Document name: Notice of publication of application for patent for invention |
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Assignee: Shenzhen Dinghai Electron Co., Ltd. Assignor: Shenzhen Dingxing Digital Network Technology Co., Ltd. Contract fulfillment period: 2009.11.6 to 2019.11.5 Contract record no.: 2010440000129 Denomination of invention: Method for protecting cells in notebook computer Granted publication date: 20080827 License type: Exclusive license Record date: 20100118 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.11.6 TO 2019.11.5; CHANGE OF CONTRACT Name of requester: SHENZHEN DINGHAI ELECTRONICS CO., LTD. Effective date: 20100118 |
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