CN103595078A - Manually switched battery circuit - Google Patents
Manually switched battery circuit Download PDFInfo
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- CN103595078A CN103595078A CN201210287379.XA CN201210287379A CN103595078A CN 103595078 A CN103595078 A CN 103595078A CN 201210287379 A CN201210287379 A CN 201210287379A CN 103595078 A CN103595078 A CN 103595078A
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- protection pin
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Abstract
The invention discloses a manually switched battery circuit for controlling the connection between a system of an electronic product and a cell. The manually switched battery circuit comprises: a voltage/capacity detection integrated circuit which has a first control pin, a charge overcharge protection pin and a discharge overcurrent/undervoltage protection pin; a connector which has a second control pin and a cell pin, and is connected with the system of the electronic product; a trigger switch, the two ends of which are electrically connected with the first control pin and the second control pin respectively; and two transistors, wherein grid electrodes of the two transistors are electrically connected with one of the charge overvoltage protection pin and the discharge overcurrent/undervoltage protection pin, and source electrodes of the two transistors are connected with the cell and the cell pin of the connector respectively, and drain electrodes of the two transistors are in butt joint. Therefore, when the electronic product is not used, the manually switched battery circuit can prevent the system from being mistakenly turned on; and when the electronic product is not used, the cell is cut off so as not to supply power to the system, thereby prolonging service life of the cell; and when water enters a keyboard, instant power cutoff can be realized by pressing the trigger switch.
Description
[technical field]
The present invention relates to a kind of switching battery circuit, particularly relate to a kind of hand switch battery circuit.
[background technology]
Current notebook computer PDA(Personal Digital Assistant; Be called again palmtop PC) etc. the battery of electronic product, its battery insertion system, just gives system power supply, cut-out battery that can not be artificial, does not have foolproof function.
Yet, adopt above-mentioned battery feed circuit to power to electronic product, can there is following shortcoming:
1, user touches key by mistake and can cause electronic product to open by mistake machine;
2, after shutdown, system still has part electric current consuming, the useful life of having reduced battery;
3, if there is emergency situations (as keyboard water inlet), cannot instant cut-off, easily cause the infringement to system.
In view of this, be necessary to develop a kind of hand switch battery circuit in fact, to address the above problem.
[summary of the invention]
Therefore, the object of this invention is to provide a kind of hand switch battery circuit, solve electronic product and touch key by mistake and open by mistake the problem that components of system as directed electric current power consumption after machine, shutdown, emergency situations cannot instant cut-offs.
In order to achieve the above object, hand switch battery circuit provided by the invention, for controlling the system of electronic product and being connected of battery, comprising:
Voltage/capacity detecting integrated circuit, it has the first control pin, charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin;
Connector, it has the second control pin and battery pin, and described connector is connected with the system of electronic product;
Trigger switch, its two ends control pin with described first respectively and described the second control pin is electrically connected;
Two-transistor, its grid respectively with described charging overvoltage protection pin, one of them electric connection of electric discharge overcurrent/under-voltage protection pin, the source electrode of described two-transistor is connected with the battery pin of described battery and described connector respectively, the drain electrode docking of described two-transistor;
Wherein, described second control pin detect described system to a trailing edge, press after described trigger switch, described first controls the output that pin is controlled described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin, and then controls the on off operating mode of described battery; And again press after described trigger switch, control described battery and produce contrary on off operating mode.
Optionally, the burning of described voltage/capacity detecting integrated circuit has control program, controls described first and controls pin after described trigger switch triggering being detected, and described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin are output as the first level state; And described first control pin after described trigger switch again being detected and triggering, described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin are output as the second electrical level state contrary with the first level state.
Optionally, described transistor is N-MOS pipe, when described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin are output as high level, and described battery and described system conducting.
Optionally, described transistor is P-MOS pipe, when described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin are output as low level, and described battery and described system conducting.
Optionally, described trigger switch is hand switch.
Optionally, described trigger switch is probe-type switch.
Compared to prior art, utilize hand switch battery circuit of the present invention, while preventing from not using, system is opened by mistake machine (only just can start shooting the in the situation that of battery and system also conducting); Reduce system end loss, while not using, click trigger switch, cut off battery, no longer give system power supply, increase battery; During the emergency situations such as keyboard water inlet, clicking trigger switch can instant cut-off, avoids system to injure.
[accompanying drawing explanation]
Fig. 1 illustrates the modular structure schematic diagram being connected with system and battery into hand switch battery circuit of the present invention.
Fig. 2 illustrates the circuit diagram into hand switch battery circuit one preferred embodiment of the present invention.
[embodiment]
Please jointly consult Fig. 1, Fig. 2, it illustrates respectively the circuit diagram into the modular structure schematic diagram that hand switch battery circuit of the present invention is connected with system and battery, hand switch battery circuit one preferred embodiment of the present invention.
In order to achieve the above object, hand switch battery circuit 10 provided by the invention, for controlling the system 20 of electronic product and being connected of battery 30, comprising:
Voltage/capacity detecting integrated circuit 11, it has the first control pin (CTL, control) 110, charging overvoltage protection pin (CHG, charge) 111, electric discharge overcurrent/under-voltage protection pin (DIS, discharge) 112;
Connector 12, it has the second control pin 120 (CTL, control) and battery pin (BAT+, battery+) 121, and described connector 12 is connected with the system 20 of electronic product;
Two-transistor 14, its grid 140 respectively with described charging overvoltage protection pin 111,112 one of them electric connection of electric discharge overcurrent/under-voltage protection pin, the source electrode 141 of described two-transistor 14 is connected with the battery pin 121 of described battery 30 and described connector 12 respectively, drain electrode 142 docking of described two-transistor 14;
Wherein, described second control pin 120 detect described system 20 to a trailing edge, press after described trigger switch 13, described first controls pin 110 receives this trailing edge, control the output of described charging overvoltage protection pin 111, electric discharge overcurrent/under-voltage protection pin 112, and then control the on off operating mode of described battery 30; And again press after described trigger switch 13, control described battery 30 and produce contrary on off operating mode.
In the present embodiment, described voltage/capacity detecting integrated circuit 11(is for example model IC_MAXIM_THIN_QFN-28L MAX17817 herein) burning has control program (certainly also can adopt control circuit), control described first and control pin 110 after described trigger switch 13 triggerings being detected, described charging overvoltage protection pin 111, electric discharge overcurrent/under-voltage protection pin 112 are output as the first level state; And described first control pin 110 after described trigger switch 13 again being detected and triggering, described charging overvoltage protection pin 111, electric discharge overcurrent/under-voltage protection pin 112 are output as the second electrical level state contrary with the first level state.
Herein, described transistor 14 is N-MOS pipe, when described charging overvoltage protection pin 111, electric discharge overcurrent/under-voltage protection pin 112 are output as high level, and described battery 30 and described system 20 conductings; When described charging overvoltage protection pin 111, electric discharge overcurrent/under-voltage protection pin 112 are output as low level, described battery 30 disconnects with described system 20.
Certainly, described transistor 14 also can be for P-MOS manages, when described charging overvoltage protection pin 111, electric discharge overcurrent/under-voltage protection pin 112 are output as low level, and described battery 30 and described system 20 conductings; When described charging overvoltage protection pin 111, electric discharge overcurrent/under-voltage protection pin 112 are output as high level, described battery 30 disconnects with described system 20.
In the present embodiment, described trigger switch 13 is hand switch, can certainly be probe-type switch.
In the present embodiment, hand switch battery circuit 10 also comprises: the first resistance 15, diode 16, the second resistance 17, the 3rd resistance 18, electric capacity 19.Described the first resistance 15, diode 16, the second resistance 17 are serially connected with successively described first and control 13 of pin 110 and described trigger switches.Described voltage/capacity detecting integrated circuit 11 also comprises a power pins 113, and described the 3rd resistance 18 1 ends are connected to described first and control 15 of pin 110 and described the first resistance, and the other end is connected to described power pins 113.Described electric capacity 19 1 ends are connected to 17 of described diode 16 and described the second resistance, other end ground connection.
Compared to prior art, utilize hand switch battery circuit 10 of the present invention, while preventing from not using, system 20 is opened by mistake machine (only just can start shooting with system 30 also conducting in the situation that at battery 20); Reduce system 30 losses, while not using, click trigger switch 13, cut off battery 30, no longer give system 20 power supplies, increase by 30 useful lifes of battery; During the emergency situations such as keyboard water inlet, clicking trigger switch 13 can instant cut-off, avoids system 20 injuries.
Claims (7)
1. a hand switch battery circuit, for controlling the system of electronic product and being connected of battery, is characterized in that, it comprises:
Voltage/capacity detecting integrated circuit, it has the first control pin, charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin;
Connector, it has the second control pin and battery pin, and described connector is connected with the system of electronic product;
Trigger switch, its two ends control pin with described first respectively and described the second control pin is electrically connected;
Two-transistor, its grid respectively with described charging overvoltage protection pin, one of them electric connection of electric discharge overcurrent/under-voltage protection pin, the source electrode of described two-transistor is connected with the battery pin of described battery and described connector respectively, the drain electrode docking of described two-transistor;
Wherein, described second control pin detect described system to a trailing edge, press after described trigger switch, described first controls the output that pin is controlled described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin, and then controls the on off operating mode of described battery; And again press after described trigger switch, control described battery and produce contrary on off operating mode.
2. hand switch battery circuit as claimed in claim 1, it is characterized in that, the burning of described voltage/capacity detecting integrated circuit has control program, control described first and control pin after described trigger switch triggering being detected, described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin are output as the first level state; And described first control pin after described trigger switch again being detected and triggering, described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin are output as the second electrical level state contrary with the first level state.
3. hand switch battery circuit as claimed in claim 1, it is characterized in that, the burning of described voltage/capacity detecting integrated circuit has control program, control described first and control pin after described trigger switch triggering being detected, described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin are output as the first level state; And described first control pin after described trigger switch again being detected and triggering, described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin are output as the second electrical level state contrary with the first level state.
4. hand switch battery circuit as claimed in claim 2 or claim 3, is characterized in that, described transistor is N-MOS pipe, when described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin are output as high level, and described battery and described system conducting.
5. hand switch battery circuit as claimed in claim 2 or claim 3, is characterized in that, described transistor is P-MOS pipe, when described charging overvoltage protection pin, electric discharge overcurrent/under-voltage protection pin are output as low level, and described battery and described system conducting.
6. hand switch battery circuit as claimed in claim 4, is characterized in that, described trigger switch is hand switch or probe-type switch.
7. hand switch battery circuit as claimed in claim 5, is characterized in that, described trigger switch is hand switch or probe-type switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210287379.XA CN103595078B (en) | 2012-08-14 | 2012-08-14 | Hand switch battery circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210287379.XA CN103595078B (en) | 2012-08-14 | 2012-08-14 | Hand switch battery circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103595078A true CN103595078A (en) | 2014-02-19 |
| CN103595078B CN103595078B (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210287379.XA Expired - Fee Related CN103595078B (en) | 2012-08-14 | 2012-08-14 | Hand switch battery circuit |
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| Country | Link |
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| CN (1) | CN103595078B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104111610A (en) * | 2014-06-24 | 2014-10-22 | 联想(北京)有限公司 | Electronic equipment and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002071572A1 (en) * | 2001-02-13 | 2002-09-12 | International Fuel Cells, Llc | System for providing assured power to a critical load |
| CN2762421Y (en) * | 2004-12-30 | 2006-03-01 | 昆达电脑科技(昆山)有限公司 | Electronic device with multiple power supply sources |
| CN201393060Y (en) * | 2009-04-01 | 2010-01-27 | 神讯电脑(昆山)有限公司 | Energy-saving battery module |
| CN202798057U (en) * | 2012-08-14 | 2013-03-13 | 神讯电脑(昆山)有限公司 | Manually switched battery circuit |
-
2012
- 2012-08-14 CN CN201210287379.XA patent/CN103595078B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002071572A1 (en) * | 2001-02-13 | 2002-09-12 | International Fuel Cells, Llc | System for providing assured power to a critical load |
| CN2762421Y (en) * | 2004-12-30 | 2006-03-01 | 昆达电脑科技(昆山)有限公司 | Electronic device with multiple power supply sources |
| CN201393060Y (en) * | 2009-04-01 | 2010-01-27 | 神讯电脑(昆山)有限公司 | Energy-saving battery module |
| CN202798057U (en) * | 2012-08-14 | 2013-03-13 | 神讯电脑(昆山)有限公司 | Manually switched battery circuit |
Non-Patent Citations (1)
| Title |
|---|
| 佚名: "美信电源新器件应用集锦", 《电子制作》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104111610A (en) * | 2014-06-24 | 2014-10-22 | 联想(北京)有限公司 | Electronic equipment and control method |
| CN104111610B (en) * | 2014-06-24 | 2017-02-01 | 联想(北京)有限公司 | Electronic equipment and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103595078B (en) | 2016-05-18 |
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