CN201562728U - Switch type protective circuit for lithium batteries - Google Patents
Switch type protective circuit for lithium batteries Download PDFInfo
- Publication number
- CN201562728U CN201562728U CN2009202377365U CN200920237736U CN201562728U CN 201562728 U CN201562728 U CN 201562728U CN 2009202377365 U CN2009202377365 U CN 2009202377365U CN 200920237736 U CN200920237736 U CN 200920237736U CN 201562728 U CN201562728 U CN 201562728U
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- China
- Prior art keywords
- lithium battery
- circuit
- pin
- protective circuit
- protective
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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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- Protection Of Static Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a switch type protective circuit for lithium batteries. The protective circuit comprises a plug circuit arranged in a plug and a socket circuit arranged in a socket. A positive electrode terminal A+ and a negative electrode terminal A- which perform electric conducting functions are arranged in the plug circuit. The positive electrode terminal A+ comprises two overhung pins P+/K. The socket circuit comprises a lithium battery protective IC (integrated circuit), a lithium battery, field effect transistors MOSFET1 and MOSFET2 and a current limiting resistor R. The positive and negative electrodes P+/P- of the lithium battery are overhung. The power pin VDD of the lithium battery protective IC is connected with the overhung K pin, the ground pin VSS of the lithium battery protective IC is connected with the negative electrode of the lithium battery, the overcharge detection output DO pin of the lithium battery protective IC is connected with the field effect transistor MOSFET1, and the overcharge detection output CO pin is connected with the field effect transistor MOSFET2. The protective circuit solves the self power consumption problems of common protective circuits and saves power.
Description
Technical field
The utility model relates to a kind of protective circuit of lithium battery, relates in particular to the protective circuit that just works when a kind of lithium battery is worked.
Background technology
The protective circuit of lithium battery is directly to be connected on the lithium battery now, and protective circuit is special-purpose IC+MOSFET, from power consumption＜6 μ A.Protective circuit has additives for overcharge protection, over, short-circuit protection, overcurrent protection function.In order to solve the client, increase other function, as the demonstration of electric weight, the balance of electric weight etc. to the new requirement of lithium electric protection circuit; but this protective circuit is the mA level from power consumption; very big to the lithium battery energy loss, under the situation of not using battery, the energy total loss of lithium battery in two months.Cause lithium battery to be scrapped.
The utility model content
The technical problem that the utility model need solve be solve lithium battery protective circuit from power consumption, promptly when lithium battery does not need work, cut-off protection circuit; When lithium battery needs work, connect protective circuit, so that the protection lithium battery.
The technical problem that the utility model need solve is achieved through the following technical solutions: a kind of switching regulator protective circuit of lithium battery, it comprises plug circuit that is arranged in the plug and the socket circuit that is arranged in the socket.When plug is plugged on the socket, just conducting of protective circuit.
Further: in the switching regulator protective circuit of above-mentioned lithium battery, be provided with the positive terminal A+ and the negative terminals A-of the effect of conducting in the described plug circuit.Described positive terminal is two unsettled binding post P+/K.Described socket circuit comprises li-ion cell protection IC, lithium battery, field effect transistor MOSFET1, MOSFET2, current-limiting resistance R.The both positive and negative polarity P+/P-of lithium battery is unsettled setting.The power pin VDD of li-ion cell protection IC links to each other with unsettled K pin.The grounding leg VSS of li-ion cell protection IC links to each other with the negative pole of lithium battery.The detecting output DO pin that overcharges of li-ion cell protection IC links to each other with field effect transistor MOSFET1, overcharges detecting output CO pin and links to each other with field effect transistor MOSFET2.The charging negative pole VM of li-ion cell protection IC links to each other with P-.
Further again, in the switching regulator protective circuit of above-mentioned lithium battery, also be provided with current-limiting resistance R between described power pin VDD and the unsettled K pin; Also be provided with sample resistance R between described charging negative pole VM and the P-.
Compared with prior art, the switching regulator protective circuit of above-mentioned lithium battery comprises plug circuit that is arranged in the plug and the socket circuit that is arranged in the socket.When lithium battery was not worked, not conducting of protective circuit, not working did not just have energy consumption.When lithium battery was worked, plug was plugged on the socket, just conducting of protective circuit., promptly when lithium battery does not need work, cut-off protection circuit; When lithium battery needs work, connect protective circuit, so that the protection lithium battery.Thereby the protective circuit that solves lithium battery is from power consumption problem, energy savings.
Description of drawings
Fig. 1 is the structure principle chart of the utility model protective circuit, 1 plug circuit, 2 socket circuits.
Specific embodiments
With reference to accompanying drawing 1 and embodiment the utility model is described.A kind of switching regulator protective circuit of lithium battery, it comprises the plug circuit 1 that is arranged in the plug and is arranged on the interior socket circuit 2 of socket.The positive terminal A+ and the negative terminals A-of the effect of conducting have been provided with in the described plug circuit 1.Described positive terminal is two unsettled binding post P+/K.Described socket circuit 2 comprises li-ion cell protection IC, lithium battery, field effect transistor MOSFET1, MOSFET2, current-limiting resistance R.The both positive and negative polarity P+/P-of lithium battery is unsettled setting.The power pin VDD of li-ion cell protection IC links to each other with unsettled K pin.The grounding leg VSS of li-ion cell protection IC links to each other with the negative pole of lithium battery.The detecting output DO pin that overcharges of li-ion cell protection IC links to each other with field effect transistor MOSFET1, overcharges detecting output CO pin and links to each other with field effect transistor MOSFET2.The charging negative pole VM of li-ion cell protection IC links to each other with P-.Also be provided with sample resistance R between described power pin VDD and the unsettled K pin.Also be provided with current-limiting resistance R between described charging negative pole VM and the P-.When lithium battery is worked; plug is plugged on the socket; two binding post P+/K that are the positive terminal A+ on the plug circuit 1 link to each other with the K pin with the anodal P+ of socket circuit 2 respectively, and the negative terminals A-on the plug circuit 1 links to each other the protective circuit conducting with socket circuit 2 negative pole P-.Promptly when lithium battery does not need work, pull the plug out of the socket, cut-off protection circuit, when lithium battery needed work, plug insertion socket connected protective circuit, the protection lithium battery.Thereby the protective circuit that solves lithium battery is from power consumption problem, energy savings.
The above is a preferred embodiment of the present utility model, is not breaking away under the utility model design situation, carries out any conspicuous distortion and replacement, all belongs to the utility model protection range.
Claims (5)
1. the switching regulator protective circuit of a lithium battery is characterized in that: it comprises and is arranged on the plug circuit (1) in the plug and is arranged on the interior socket circuit (2) of socket.
2. the switching regulator protective circuit of lithium battery according to claim 1 is characterized in that: the positive terminal A+ and the negative terminals A-that have been provided with the effect of conducting in the described plug circuit (1).
3. the switching regulator protective circuit of lithium battery according to claim 2, it is characterized in that: described positive terminal A+ is two unsettled binding post P+/K.
4. the switching regulator protective circuit of lithium battery according to claim 1, it is characterized in that: described socket circuit (2) comprises li-ion cell protection IC, lithium battery, field effect transistor MOSFET1, MOSFET2, current-limiting resistance R;
The both positive and negative polarity P+/P-of lithium battery is unsettled setting;
The power pin VDD of li-ion cell protection IC links to each other with unsettled K pin;
The grounding leg VSS of li-ion cell protection IC links to each other with the negative pole of lithium battery;
The detecting output DO pin that overcharges of li-ion cell protection IC links to each other with field effect transistor MOSFET1, overcharges detecting output CO pin and links to each other with field effect transistor MOSFET2;
The charging negative pole VM of li-ion cell protection IC links to each other with P-.
5. the switching regulator protective circuit of lithium battery according to claim 4 is characterized in that: also be provided with current-limiting resistance R between described power pin VDD and the unsettled K pin; Also be provided with sample resistance R between described charging negative pole VM and the P-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202377365U CN201562728U (en) | 2009-10-22 | 2009-10-22 | Switch type protective circuit for lithium batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202377365U CN201562728U (en) | 2009-10-22 | 2009-10-22 | Switch type protective circuit for lithium batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562728U true CN201562728U (en) | 2010-08-25 |
Family
ID=42627881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202377365U Expired - Fee Related CN201562728U (en) | 2009-10-22 | 2009-10-22 | Switch type protective circuit for lithium batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562728U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651464A (en) * | 2012-05-25 | 2012-08-29 | 深圳市万拓电子技术有限公司 | Detachable contact power supply |
| CN109449890A (en) * | 2018-12-11 | 2019-03-08 | 欣旺达电子股份有限公司 | Single lithium battery protects IC and single lithium battery to protect circuit |
| WO2022052684A1 (en) * | 2020-09-09 | 2022-03-17 | 高创(苏州)电子有限公司 | Battery charging/discharging control system and electronic device |
-
2009
- 2009-10-22 CN CN2009202377365U patent/CN201562728U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651464A (en) * | 2012-05-25 | 2012-08-29 | 深圳市万拓电子技术有限公司 | Detachable contact power supply |
| CN102651464B (en) * | 2012-05-25 | 2016-01-27 | 深圳市万拓电子技术有限公司 | Detachable contact power supply |
| CN109449890A (en) * | 2018-12-11 | 2019-03-08 | 欣旺达电子股份有限公司 | Single lithium battery protects IC and single lithium battery to protect circuit |
| WO2022052684A1 (en) * | 2020-09-09 | 2022-03-17 | 高创(苏州)电子有限公司 | Battery charging/discharging control system and electronic device |
| CN114243806A (en) * | 2020-09-09 | 2022-03-25 | 高创(苏州)电子有限公司 | Battery charge-discharge control system and electronic equipment |
| CN114243806B (en) * | 2020-09-09 | 2024-05-14 | 高创(苏州)电子有限公司 | Battery charge and discharge control system and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20111022 |