CN1393970A - Charge protector of battery - Google Patents
Charge protector of battery Download PDFInfo
- Publication number
- CN1393970A CN1393970A CN01118891A CN01118891A CN1393970A CN 1393970 A CN1393970 A CN 1393970A CN 01118891 A CN01118891 A CN 01118891A CN 01118891 A CN01118891 A CN 01118891A CN 1393970 A CN1393970 A CN 1393970A
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- Prior art keywords
- battery
- charging
- charge protector
- battery pack
- enable signal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The battery charge protection circuit is used for protecting the charging type battery pack, for example the lithium ion battery pack used in notebook type conputer so as to protect damage of the battery pack from over voltage and over current, when the battery pack is in charging. The battery charge protection circuit includes the battery supervisory circuit, a micro controller, a charging circuit and the alarm. When the charging type battery pack produces over voltage or over current, the alarm sends out a warning in order to inform the user to take necessary measure for protecting damage of the battery pack from over voltage and over current.
Description
The present invention relates to a kind of TunePower, particularly relate to a kind of charge protector of battery.
Battery variety can be divided into two big classes: rechargeable type and rechargeable type not.Can not TunePower for example alkaline battery, lithium battery etc.; But the rechargeable type battery then is the battery that recharge uses, for example plumbic acid, NI-G, ni-mh, lithium ion, lithium macromolecule and fuel cell etc.; Wherein lithium ion battery then often is used on the portable electron device, for example mobile phone, notebook computer, wrist-watch and digital camera or the like.
The advantage of lithium ion battery comprises that capacity is big, in light weight, memory-less effect, recycle long, high voltage of life-span and quickly-chargeable.Extensively apply at present on the portable electron devices such as mobile phone, notebook computer, wrist-watch and digital camera, quite convenient handy.Yet lithium ion battery is but quite dangerous, can produce toxic gas, breaks when lithium ion battery has, during the phenomenon of leakage, never can re-use.Therefore, the protection of lithium ion battery is necessary, and extremely important.If single lithium ion battery overcharges and surpasses 4.5 volts or overdischarge and be lower than 2.2 volts and promptly can cause nonvolatil destruction to lithium ion battery.So need add protective circuit, the danger that prevent to overcharge, overdischarge, overcurrent and short circuit etc. causes, and poorly designed charging circuit and protective circuit also might cause lithium ion battery and damage with dangerous.
Fig. 1 promptly shows a kind of basic framework of existing charge protector of battery.As shown in the figure, this existing charge protector of battery is that lotus root is connected to a battery pack 100 on using, and it for example is a lithium ion battery group, is not subjected to the overvoltage/overcurrent infringement in order to protect this battery pack 100.The basic framework of this existing charge protector of battery comprises a battery detection circuit 110, a microcontroller 120 and a charging circuit 130.
Above-mentioned charge protector of battery under normal circumstances makes charging circuit 130 continue battery pack 100 is charged; While battery detection circuit 110 is the state of persistent surveillance battery pack 100 then; If abnormality takes place; as overvoltage, overcurrent; then battery detection circuit 110 can be sent out a battery abnormal signal S1 immediately to microcontroller 120; cause microcontroller 120 to send an outage enable signal S2 immediately to charging circuit 130; cause charging circuit 130 to stop charging, and battery pack 100 also just obtain protecting unlikely damage to battery pack 100.
But sometimes, battery detection circuit 110 detects battery pack 100 abnormality, though it sends battery abnormal signal S1 immediately to microcontroller 120, yet the abnormality of battery pack 100 can't be removed; That is to say that charging circuit 130 still continues battery pack 100 chargings.The possible cause of this situation has following several:
(1) microcontroller 120 is not received battery abnormal signal S1;
(2), fail correct response and send outage enable signal S2 to charging circuit 130 though microcontroller 120 has been received battery abnormal signal S1;
(3) give charging circuit 130 though microcontroller 120 has been sent outage enable signal S2, can't cut off the charging of 130 pairs of battery pack 100 of charging circuit.
No matter be above-mentioned any situation, battery pack 100 all might be damaged.
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of charge protector of battery, it is damaged in the time of can protecting a TunePower group to avoid charging.
In order to achieve the above object, the invention provides a kind of charge protector of battery, it is subjected to overvoltage/overcurrent and damages in the time of can protecting a TunePower group to avoid charging; This charge protector of battery comprises: a battery detection circuit, and it is in order to monitoring the voltage/current state of this TunePower group, and can produce a battery abnormal signal and an alarm enable signal when this battery pack of monitoring is in the overvoltage/overcurrent state; One microcontroller, it can respond the battery abnormal signal that this battery detection circuit produces and produce an outage enable signal; One charging circuit, it is in order to carrying out a charging procedure to this TunePower group, and can interrupt this charging procedure when receiving the outage enable signal that this microcontroller produced; And a siren, it can respond the alarm enable signal that this battery detection circuit produces and produce an alarm.
Advantage of the present invention is: because the present invention has increased siren in circuit, when battery pack had overvoltage or overcurrent, the battery detection circuit was promptly notified microcontroller and is cut off charging circuit; If the information that microcontroller leakage battery detection circuit is brought, perhaps microcontroller does not have correct response, though perhaps microcontroller has correct response, circuit is failed but control is rationed the power supply, the battery detection circuit still can touch siren and send caution, and the user just can handle this situation immediately.Therefore, the present invention can for example be a lithium ion battery group used in the notebook computer in order to protect a TunePower group, is subjected to the damage of overvoltage and overcurrent when avoiding charging
The present invention is described in detail below in conjunction with drawings and Examples:
Fig. 1 is system's block schematic diagram, and it shows the basic framework of an existing charge protector of battery;
Fig. 2 is system's block schematic diagram, and it shows the basic framework of charge protector of battery of the present invention.
Symbol description among the figure:
100 battery pack
110 battery detection circuit
120 microcontrollers
130 charging circuits
200 battery pack
210 battery detection circuit
220 microcontrollers
230 charging circuits
240 sirens
Below be the Fig. 2 in the conjunction with figs., an embodiment of detailed description charge protector of battery of the present invention.
Fig. 2 promptly shows the overall architecture of charge protector of battery of the present invention.As shown in the figure, charge protector of battery of the present invention is that lotus root is connected to a battery pack 200 on using, and it for example is a lithium ion battery group, is not subjected to the infringement of overvoltage/overcurrent in order to protect this battery pack 200.The basic framework of charge protector of battery of the present invention comprises a battery detection circuit 210, a microcontroller 220, a charging circuit 230 and a siren 240.
Battery pack 200 promptly is the object that charge protector of battery of the present invention is protected, and it can or compose in parallel by single or the series connection of many batteries.If be made up of many batteries, then every battery all will be distinguished monitored protection.
Battery detection circuit 210 has a battery link A1, an information transmission end A2 and an alarm signal transmission end A3; Wherein battery link A1 is connected to battery pack 200, in order to the voltage/current state of monitoring battery pack 200; If finding has abnormality,, then can send a battery abnormal signal S1 to microcontroller 220 from information transmission end A2 immediately, and send an alarm enable signal ALARM to siren 240 from alarm signal transmission end A3 simultaneously as overvoltage, overcurrent etc.
Microcontroller 220 has an information receiving end B1 and a control signal output ends B2; Wherein this information receiving end B1 is connected to the information transmission end A2 of battery detection circuit 210, in order to receive the battery abnormal signal S1 that battery detection circuit 210 transmits; Control signal output ends B2 then exports an outage enable signal S2 to charging circuit 230 in order to response battery abnormal signal S1.
Charging circuit 230 has a battery link C1 and a signal input end C2; Wherein battery link C1 is connected to battery pack 200, in order to battery pack 200 is charged; Signal input end C2 then is connected to the control signal output ends B2 of microcontroller 220, in order to receive the outage enable signal S2 that microcontroller 220 is sent.Charging circuit 230 is by for example flowing to direct current transducer (DC-to-DC Converter) and a big power metal oxide semiconductor field effect transistor (MOSFET) is formed always, but also can be the charging circuit of other pattern.
Siren 240 for example is a sound formula siren, and it can produce an audio alarm and take action to notify the user.Siren 240 has an alarm signal receiving terminal D, and it is connected to the alarm signal transmission end A3 of battery detection circuit 210, in order to receive the alarm enable signal ALARM that battery detection circuit 210 is produced.
Charge protector of battery of the present invention under normal circumstances makes charging circuit 230 continue battery pack 200 is charged; While battery detection circuit 210 is the state of persistent surveillance battery pack 200 then; If abnormality takes place; as overvoltage, overcurrent; then battery detection circuit 210 can be sent out a battery abnormal signal S1 immediately to microcontroller 220; cause microcontroller 220 to send an outage enable signal S2 immediately to charging circuit 230; cause charging circuit 230 to stop charging, and battery pack 200 also just obtain protecting unlikely damage to battery pack 200.
But if described in background of invention, though sometimes battery detection circuit 210 has detected battery pack 200 abnormality is arranged, and sends battery abnormal signal S1 immediately to microcontroller 220, yet the abnormality of battery pack 200 can't be removed.Under this situation, enable signal ALARM gives siren 240 because battery detection circuit 210 of the present invention can give the alarm simultaneously, cause siren 240 to send an audio alarm, to notify the user to take necessary remedial measure, for example remove this abnormality, make battery pack 200 can not be subjected to overvoltage/overcurrent and damage with manual mode.
Compare with prior art, charge protector of battery of the present invention has the advantage of duplicate protection because of having added siren 240.When microcontroller 220 because some reason, for example interference of temperature or electromagnetic wave etc. and when ineffective, charge protector of battery of the present invention also have second heavily protection execute, so can significantly lower the chance that battery pack 200 is damaged.Therefore the present invention has better progressive and practicality than prior art.
The above is preferred embodiment of the present invention only, is not in order to limit the scope of essence technology contents of the present invention.Essence technology contents of the present invention broadly is defined in claims.Any technology entity or method that other people are finished if the scope that is defined with claims is identical or be a kind of change of equivalence, all will be regarded as being covered by in the protection range of this patent.
Claims (8)
1. charge protector of battery, it is subjected to overvoltage/overcurrent and damages in the time of can protecting a TunePower group to avoid charging;
This charge protector of battery comprises:
One battery detection circuit, it is in order to monitoring the voltage/current state of this TunePower group, and can produce a battery abnormal signal and an alarm enable signal when this battery pack of monitoring is in the overvoltage/overcurrent state;
One microcontroller, it can respond the battery abnormal signal that this battery detection circuit produces and produce an outage enable signal;
One charging circuit, it is in order to carrying out a charging procedure to this TunePower group, and can interrupt this charging procedure when receiving the outage enable signal that this microcontroller produced; And
One siren, it can respond the alarm enable signal that this battery detection circuit produces and produce an alarm.
2. charge protector of battery according to claim 1 is characterized in that: this battery pack is a lithium ion battery group.
3. charge protector of battery according to claim 1 is characterized in that: this siren is a sound formula siren.
4. charge protector of battery according to claim 1 is characterized in that: this charging circuit comprises and flows to direct current transducer always.
5. charge protector of battery, it is applicable in the notebook computer, and this notebook computer has a TunePower group, is subjected to overvoltage/overcurrent when protecting this TunePower group to avoid charging to damage;
This charge protector of battery comprises:
One battery detection circuit, it is in order to monitoring the charging voltage/current status of this TunePower group, and can produce a battery abnormal signal and an alarm enable signal when this battery pack of monitoring is in the overvoltage/overcurrent state;
One microprocessor, it can respond the battery abnormal signal that this battery detection circuit produces and produce an outage enable signal;
One charging circuit, it is in order to carrying out a charging procedure to this TunePower group, and can interrupt this charging procedure when receiving the outage enable signal that this microprocessor produced; And
One siren, it can respond the alarm enable signal that this battery detection circuit produces and produce an alarm.
6. charge protector of battery according to claim 5 is characterized in that: this battery pack is a lithium ion battery group.
7. charge protector of battery according to claim 5 is characterized in that: this siren is a sound formula siren.
8. charge protector of battery according to claim 5 is characterized in that: this charging circuit comprises and flows to direct current transducer always.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01118891A CN1393970A (en) | 2001-06-28 | 2001-06-28 | Charge protector of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01118891A CN1393970A (en) | 2001-06-28 | 2001-06-28 | Charge protector of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1393970A true CN1393970A (en) | 2003-01-29 |
Family
ID=4663485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01118891A Pending CN1393970A (en) | 2001-06-28 | 2001-06-28 | Charge protector of battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1393970A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814757A (en) * | 2010-04-14 | 2010-08-25 | 青岛海信移动通信技术股份有限公司 | Method and system for supplying power to mobile terminal |
| CN101854067A (en) * | 2009-04-01 | 2010-10-06 | 深圳富泰宏精密工业有限公司 | Electronic device and safe charging method thereof |
| CN101119035B (en) * | 2006-03-27 | 2010-12-01 | 三星Sdi株式会社 | Single unit protection circuit module and battery pack using the same |
| CN102084573A (en) * | 2008-05-05 | 2011-06-01 | 意法爱立信有限公司 | Charge suspend feature for mobile device |
| CN101443949B (en) * | 2006-05-04 | 2011-06-08 | 株式会社Lg化学 | Method and apparatus for controlling battery |
| CN102113165A (en) * | 2009-04-09 | 2011-06-29 | 松下电器产业株式会社 | Protection circuit and battery pack |
| CN104823066A (en) * | 2012-11-30 | 2015-08-05 | 特斯拉汽车公司 | Response to detection of an overcharge event in a series connected battery element |
| CN106374152A (en) * | 2016-09-30 | 2017-02-01 | 北京珠穆朗玛移动通信有限公司 | Battery abnormity processing method, device and system and mobile terminal |
-
2001
- 2001-06-28 CN CN01118891A patent/CN1393970A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101119035B (en) * | 2006-03-27 | 2010-12-01 | 三星Sdi株式会社 | Single unit protection circuit module and battery pack using the same |
| CN101443949B (en) * | 2006-05-04 | 2011-06-08 | 株式会社Lg化学 | Method and apparatus for controlling battery |
| CN102084573A (en) * | 2008-05-05 | 2011-06-01 | 意法爱立信有限公司 | Charge suspend feature for mobile device |
| CN101854067A (en) * | 2009-04-01 | 2010-10-06 | 深圳富泰宏精密工业有限公司 | Electronic device and safe charging method thereof |
| CN102113165A (en) * | 2009-04-09 | 2011-06-29 | 松下电器产业株式会社 | Protection circuit and battery pack |
| US8648572B2 (en) | 2009-04-09 | 2014-02-11 | Panasonic Corporation | Protection circuit and battery pack |
| CN102113165B (en) * | 2009-04-09 | 2014-08-06 | 松下电器产业株式会社 | Protection circuit and battery pack |
| CN101814757A (en) * | 2010-04-14 | 2010-08-25 | 青岛海信移动通信技术股份有限公司 | Method and system for supplying power to mobile terminal |
| CN104823066A (en) * | 2012-11-30 | 2015-08-05 | 特斯拉汽车公司 | Response to detection of an overcharge event in a series connected battery element |
| CN106374152A (en) * | 2016-09-30 | 2017-02-01 | 北京珠穆朗玛移动通信有限公司 | Battery abnormity processing method, device and system and mobile terminal |
| CN106374152B (en) * | 2016-09-30 | 2019-08-13 | 北京珠穆朗玛移动通信有限公司 | A kind of battery abnormality eliminating method, device, mobile terminal and system |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |