CN100336280C - Protector for battery charge-discharge control circuit of note-book computer - Google Patents
Protector for battery charge-discharge control circuit of note-book computer Download PDFInfo
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- CN100336280C CN100336280C CNB2004100095489A CN200410009548A CN100336280C CN 100336280 C CN100336280 C CN 100336280C CN B2004100095489 A CNB2004100095489 A CN B2004100095489A CN 200410009548 A CN200410009548 A CN 200410009548A CN 100336280 C CN100336280 C CN 100336280C
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- notebook computer
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- charging
- switched
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Abstract
The present invention discloses a protection device for a charging/discharging control circuit of a battery of a notebook computer, wherein a charging battery is connected with the charging/ discharging control circuit, and a bidirectional switch which is arranged in the battery is used for controlling a signal base pin and an earthing base pin of an interface to be switched on and switched off. The bidirectional switch is added in the battery, so signals of SMC and GND are controlled to be switched on and switched off. In addition, a button of the switch is arranged on a position of the battery of the notebook computer or on a position of the main body, and the position can be conveniently operated by a user. Thereby, the notebook computer can be switched off at any time when the charging battery is not used, and the battery is thought in a non-electric state because the electric quantity of the battery can not be checked by a check circuit. As a result, the charging battery of the charged notebook computer is prevented from being charged or discharged repeatedly. Therefore, the service life of the charging battery of the notebook computer is ensured, and the charging battery is sufficiently protected.
Description
Technical field
The present invention relates to a kind of charging and discharging protection device of cells in notebook computer.
Background technology
Generally all dispose chargeable cells in notebook computer in the notebook computer, this cells in notebook computer generally is the preferable lithium ion battery of performance.To discharge and recharge number of times relevant because useful life of lithium ion battery is with it, effectively controls the useful life that its access times can prolong battery.It is adapter power supply and powered battery that notebook computer has two kinds of supply power modes, in use both mutual situations about using occur through regular meeting, many times do not put electricity fully and just begun charging at battery, but this also to calculate be once to charge.Use the people regular meeting of notebook computer carefulness to pull out battery; reduce the number of times of the use of battery; because cells in notebook computer generally makes a part built-in or the notebook computer structure, pulling out battery all has certain influence to the attractive in appearance and convenience of computer, and; if accidentally; serious physical damnification will be arranged, even cause damaging fully, for the battery of laying down; to be very much trouble also additionally to its keeping.And following situation in use also often appears in cells in notebook computer: the battery electricity does not use and need use adapter; When not using battery owing to exist self discharge and circuit electric leakage (200uA is following) electric weight also can reduce.This is very unfavorable to cells in notebook computer equally, influences its useful life.
Notebook computer charge-discharge control circuit part is made up of two parts, i.e. safety protection loop in main body control part loop and the cells in notebook computer encapsulation, and the major function in body interior loop is for setting charging and discharging currents voltage and reading battery parameter.Electric core combination and safety protective circuit part are arranged in the encapsulation of cells in notebook computer.As shown in Figure 1; be the safety protection loop schematic diagram in the cells in notebook computer encapsulation, the schematic diagram of the safety protection loop shown in Fig. 1 mainly is made up of following components: EEPROM, battery charging and discharging state monitoring chip BQ2060, once protect loop, second protection loop, electric core and thermistor.Wherein, EEPROM is a memory memory, and a lot of parameter settings, the information of dispatching from the factory are all set wherein, and its information can be called and be read by system by SMD and SMC two signal pins by SMBus.BQ2060 can detect the voltage of every electric core (cell), and the battery temperature of the charging/discharging voltage of whole battery group, electric current and work changes into the system data signal by digital to analog converter, and is read by SMBus by system.Protective circuit and second protection circuit are the safety protection loop of battery, guarantee the fail safe of battery, and once protection can recover, and second protection is irrecoverable.
But the charge-discharge control circuit of existing notebook computer is not taked measure that cells in notebook computer is effectively protected, and this has had a strong impact on the useful life of cells in notebook computer.
Summary of the invention
At the existing problem and shortage of above-mentioned existing cells in notebook computer charge-discharge control circuit, the purpose of this invention is to provide a kind of can closing cells in notebook computer in real time as required and make battery be in the charging and discharging protection device of the cells in notebook computer of electroless state.
The present invention is achieved in that a kind of charging and discharging protection device of cells in notebook computer; described protective device increases a bidirectional switch in that described cells in notebook computer is inner, and described bidirectional switch is used to control the connecting and disconnecting of the circuit that signal pin connected of cells in notebook computer and the connecting and disconnecting of the circuit that ground pin connected.
Further, the button of described switch is located at arbitrary easy-operating position on described cells in notebook computer or the notebook computer main body.
The present invention increases a bidirectional switch in cells in notebook computer inside, thereby comes the connecting and disconnecting of control signal pin (SMC) and ground pin (GND); And the button of this switch is located at the position that is easy to user operation on cells in notebook computer or the notebook computer main body, like this, do not use under the rechargeable battery situation at notebook computer and at any time it to be closed, testing circuit also detects less than the battery electric quantity situation, can think that it is in electroless state.Like this, can avoid filling the cells in notebook computer repeated charge, guarantee the life-span of cells in notebook computer, cells in notebook computer has adequately protected.The present invention has increased the on ﹠ off switch of cells in notebook computer, can cut off the loop that cells in notebook computer uses quickly and easily, need not to pull out cells in notebook computer, and this function and design have more hommization, also can efficiently solve the problem of repeated charge.
Description of drawings
Below in conjunction with accompanying drawing, the present invention is made detailed description.
Fig. 1 is the safety protection loop structural representation in the existing cells in notebook computer encapsulation;
Fig. 2 is a structural representation of the present invention.
Embodiment
As shown in Figure 2, the present invention is the improvement on Fig. 1 basis.Control the connecting and disconnecting (figure left end) of " SMC " and " GND " signal at bidirectional switch of the inner increase of cells in notebook computer.The charging and discharging circuit that disconnection " GND " promptly disconnects cells in notebook computer makes cells in notebook computer stop the action that continues to discharge and recharge, also can realize cutting off the function of charging and discharging circuit by disconnecting ground signal pin " GND ", the present invention can reduce the difficulty or ease of cost and design without electric capacity.
The solution of the present invention is simple, need not big change on the circuit, only needs to set up an on ﹠ off switch on cells in notebook computer and gets final product, and this on ﹠ off switch also can be located at any possible position that is beneficial to user's operation on the notebook computer main body.
The present invention promptly is the use that the design on ﹠ off switch is controlled cells in notebook computer with pressure on cells in notebook computer or notebook computer main body, along with popularizing of notebook computer, requirement to cells in notebook computer service time also can be more and more higher, and the human oriented design scheme in this prolongation cells in notebook computer life-span will be a development trend in the future.
Claims (2)
1, a kind of charging and discharging protection device of cells in notebook computer; it is characterized in that; described protective device increases a bidirectional switch in that described cells in notebook computer is inner, and described bidirectional switch is used to control the connecting and disconnecting of the circuit that signal pin connected of cells in notebook computer and the connecting and disconnecting of the circuit that ground pin connected.
2, the charging and discharging protection device of cells in notebook computer as claimed in claim 1 is characterized in that, the button of described bidirectional switch is located at easy-operating position on described cells in notebook computer or the notebook computer main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100095489A CN100336280C (en) | 2004-09-13 | 2004-09-13 | Protector for battery charge-discharge control circuit of note-book computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100095489A CN100336280C (en) | 2004-09-13 | 2004-09-13 | Protector for battery charge-discharge control circuit of note-book computer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1599191A CN1599191A (en) | 2005-03-23 |
| CN100336280C true CN100336280C (en) | 2007-09-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100095489A Expired - Fee Related CN100336280C (en) | 2004-09-13 | 2004-09-13 | Protector for battery charge-discharge control circuit of note-book computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100336280C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377468C (en) * | 2005-05-24 | 2008-03-26 | 乐金电子（昆山）电脑有限公司 | Battery charging control device and its method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5909104A (en) * | 1998-02-26 | 1999-06-01 | Motorola, Inc. | Electrostatic enhanced lithium battery circuit |
| US5963019A (en) * | 1996-09-17 | 1999-10-05 | Samsung Electronics Co., Ltd. | Battery pack with battery protection circuit |
| CN2728077Y (en) * | 2004-09-08 | 2005-09-21 | 上海北大方正科技电脑系统有限公司 | A protector for notebook computer battery charging/discharging control circuit |
-
2004
- 2004-09-13 CN CNB2004100095489A patent/CN100336280C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5963019A (en) * | 1996-09-17 | 1999-10-05 | Samsung Electronics Co., Ltd. | Battery pack with battery protection circuit |
| US5909104A (en) * | 1998-02-26 | 1999-06-01 | Motorola, Inc. | Electrostatic enhanced lithium battery circuit |
| CN2728077Y (en) * | 2004-09-08 | 2005-09-21 | 上海北大方正科技电脑系统有限公司 | A protector for notebook computer battery charging/discharging control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1599191A (en) | 2005-03-23 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: PEKING UNIVERSITY FOUNDER GROUP Co.,Ltd. Assignor: Shanghai Beijing University Founder Technology Computer System Co.,Ltd. Contract fulfillment period: 2007.10.8 to 2013.10.7 Contract record no.: 2008110000206 Denomination of invention: Protector for battery charge-discharge control circuit of note-book computer Granted publication date: 20070905 License type: Exclusive license Record date: 20081217 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.10.8 TO 2013.10.7; CHANGE OF CONTRACT Name of requester: BEIJING UNIVERSITY FOUNDER GROUP CO. Effective date: 20081217 |
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| ASS | Succession or assignment of patent right |
Owner name: ACER COMPUTER (CHINA) CO., LTD. Free format text: FORMER OWNER: BEIDA FANGZHENG SCIENCE + TECHNOLOGY COMPUTER SYSTEM CO., LTD., SHANGHAI Effective date: 20101029 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100871 8/F, FANGZHENG BUILDING, ZHONGGUANCUN, NO.298, CHENGFU ROAD, HAIDIAN DISTRICT, BEIJING TO: 200001 3/F, NO.168, XIZANG MIDDLE ROAD, HUANGPU DISTRICT, SHANGHAI |
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| TR01 | Transfer of patent right |
Effective date of registration: 20101029 Address after: 3, No. 168 middle Tibet Road, No. 200001, Shanghai, Huangpu District Patentee after: Acer Computer (Shanghai) Co.,Ltd. Address before: 100871, Beijing, Haidian District, Cheng Fu Road, No. 298, Zhongguancun Fangzheng building, 8 floor Patentee before: Shanghai Beijing University Founder Technology Computer System Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070905 |
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| CF01 | Termination of patent right due to non-payment of annual fee |