CN104865855A - Power supply control apparatus - Google Patents
Power supply control apparatus Download PDFInfo
- Publication number
- CN104865855A CN104865855A CN201510137817.8A CN201510137817A CN104865855A CN 104865855 A CN104865855 A CN 104865855A CN 201510137817 A CN201510137817 A CN 201510137817A CN 104865855 A CN104865855 A CN 104865855A
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- Prior art keywords
- resistance
- triode
- semiconductor
- oxide
- power control
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a power supply control apparatus for controlling a power supply of electrical equipment. The electrical equipment contains a battery, a load, and a processor. The power supply control apparatus connected with the battery, the load, and the processor is characterized in that the apparatus is composed of an MOS tube, a triode, a key switch, a first resistor, a second resistor, a third resistor, a first capacitor, and a second capacitor. With the apparatus, functions of voltage stabilization, over-current protection and short-circuit protection of the control circuit of the apparatus are realized. Moreover, the circuit is simple and reliable. The structural dimension is small; and the cost is low. The power supply control apparatus is suitable for a miniature electronic product.
Description
Technical field
The present invention relates to Energy control technical field, particularly a kind of power control.
Background technology
In some battery-powered consumer electronicses such as televisor, sound equipment, be generally provided with power control circuit, be mainly used in adjusting the power supply of equipment.Existing power control circuit great majority carry out shut-off circuit completely by toggle switch, and this toggle switch is generally arranged on front or the side of electric equipment, have impact on the overall appearance of product, also certain requirement is had to load, and circuit structure is complicated, is not suitable for applying on miniaturized electronic product.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of power control, the circuit structure of power control can be made simple, reduce cost of products.
In order to achieve the above object, this invention takes following technical scheme:
A kind of power control, for controlling the power supply of electric equipment, described electric equipment comprises battery, load and processor, described power control is connected with battery, load and processor, and described power control comprises: metal-oxide-semiconductor, triode, keyswitch, the first resistance, the second resistance, the 3rd resistance, the first electric capacity and the second electric capacity;
The emitter of described triode connects battery, the base stage of triode connect the drain electrode of metal-oxide-semiconductor and the 3rd resistance one end, also by the emitter of the first resistance connecting triode and battery, also by the first capacity earth, the collector of triode connects load, 2nd GPIO mouth of the other end connection handling device of the 3rd resistance by keyswitch ground connection, also by the second capacity earth, also VDD feeder ear is connected by the second resistance; One GPIO mouth of the grid connection handling device of described metal-oxide-semiconductor, the source ground of metal-oxide-semiconductor.
In described power control, described triode is PNP triode.
In described power control, described metal-oxide-semiconductor is N metal-oxide-semiconductor.
In described power control, the resistance of described first resistance is 330 Ω.
In described power control, the capacitance of described first electric capacity and the second electric capacity is 1uF.
Compared to prior art, power control provided by the invention, comprise: metal-oxide-semiconductor, triode, keyswitch, first resistance, second resistance, 3rd resistance, first electric capacity and the second electric capacity, when normally working: the grid of metal-oxide-semiconductor is high level, metal-oxide-semiconductor is in conducting state, now metal-oxide-semiconductor drain electrode is low level, the base stage of triode is made to be that low level makes triode ON, the electric current of battery flows to collector from the emitter of triode, powering load, and, now the 2nd GPIO mouth of processor is high level, keyswitch keeps the state flicked, when needs shut-off circuit: push button switch, the voltage of the 2nd GPIO mouth of processor is dragged down, to processor order dragged down, now processor sends a low-voltage order to a GPIO mouth, and make the grid of metal-oxide-semiconductor be that low level is ended, the drain electrode of such metal-oxide-semiconductor is high level, so the base stage of triode is also high level, now triode cut-off, the electric current of battery can not flow to drain electrode, to load power down from source electrode, when needs open circuit, push button interrupteur SW 1 again, keyswitch is flicked, processor 30 is according to initialized setting, make a GPIO mouth P1 export high level, now the base stage of metal-oxide-semiconductor Q2 is pulled to high level and makes metal-oxide-semiconductor Q2 and triode Q1 conducting, and the electric current that battery 10 exports flows to collector from emitter, power to load 20, now the 2nd GPIO mouth P2 is high level by the second resistance pull-up.The present invention utilizes simple resistance; the conventional electronic component such as electric capacity, triode, metal-oxide-semiconductor achieve the functions such as the voltage stabilizing of power control control circuit, overcurrent protection, short-circuit protection; and circuit is simple, reliable, and its cost is low, is adapted at miniaturized electronic product is applied.
Accompanying drawing explanation
Fig. 1 is power control circuit diagram of the present invention.
Embodiment
The invention provides a kind of power control, for making object of the present invention, technical scheme and effect clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Power control provided by the invention is used for controlling the power supply of electric equipment, and the voltage and current that battery exports is exported to load supplying.Refer to Fig. 1, described electric equipment comprises battery 10, load 20 and processor 30, and described power control is connected with battery 10, load 20 and processor 30.Described power control comprises: triode Q2, metal-oxide-semiconductor Q1, keyswitch SW1, the first resistance R1, the second resistance R2, the 3rd resistance R3, the first electric capacity D1 and the second electric capacity D2.
The emitter of described triode Q1 connects battery, the base stage of triode Q1 connect the drain electrode of metal-oxide-semiconductor Q2 and the 3rd resistance R3 one end, also by the emitter of the first resistance R1 connecting triode Q1 and battery 10, also by the first electric capacity C1 ground connection, the collector of triode Q1 connects load, 2nd GPIO mouth of the other end connection handling device 30 of the 3rd resistance R3, also by keyswitch SW1 ground connection, and by the second electric capacity C2 ground connection, also connect VDD feeder ear by the second resistance R2; One GPIO mouth of the grid connection handling device 30 of described metal-oxide-semiconductor Q1, the source ground of metal-oxide-semiconductor Q1.
Wherein, described electric equipment is the electric equipment such as TV, sound equipment, and battery 10 is lithium battery, and described metal-oxide-semiconductor Q1 is N metal-oxide-semiconductor, and when the grid of metal-oxide-semiconductor Q1 is high level, metal-oxide-semiconductor Q1 conducting, when grid is low level, metal-oxide-semiconductor Q1 ends.Described triode Q2 is PNP triode, and when the base stage of triode Q2 is low level, triode Q2 conducting, when the base stage of triode Q2 is high level, triode Q2 ends.Described second resistance R2 is pull-up resistor, and the 2nd GPIO mouth P2 be mainly used in as processor 30 provides original state.
The resistance of described first resistance is 330 Ω, makes coating-forming voltage between the base stage of triode and emitter poor, and the 3rd resistance is current-limiting resistance, when pushing button switch, and conservation treatment device.First electric capacity and the second electric capacity are filter capacitor, and its capacitance is 1uF, produce spiking and damage metal-oxide-semiconductor and triode when preventing button from pressing and flick.
Below in conjunction with Fig. 1, the principle of work of power control of the present invention is described in detail:
When normally working: the grid of metal-oxide-semiconductor Q1 is high level, metal-oxide-semiconductor Q1 conducting, now drain electrode is low level, the base stage of triode Q2 is made to be low level and conducting, the electric current of battery 10 flows to collector from the emitter of triode Q2, powering load, and, now the 2nd GPIO mouth P2 of processor 30 is high level, and keyswitch SW1 keeps the state flicked.
When needs shut-off circuit: push button interrupteur SW 1, the voltage of the 2nd GPIO mouth P2 of processor 30 is dragged down, to processor 30 1 orders dragged down, now processor 30 sends a low-voltage order to a GPIO mouth P1, makes the grid of metal-oxide-semiconductor Q1 be that low level is ended, the current collection very high level of such metal-oxide-semiconductor Q1, so the grid of triode Q2 is also high level, now triode Q2 ends, and the electric current of battery 10 can not flow to drain electrode, to load power down from source electrode.
When needs open circuit: push button interrupteur SW 1 again, keyswitch is flicked, processor 30 is according to initialized setting, a GPIO mouth P1 is made to export high level, now the base stage of metal-oxide-semiconductor Q2 is pulled to high level and makes metal-oxide-semiconductor Q2 and triode Q1 conducting, the electric current that battery 10 exports flows to collector from emitter, and power to load 20, now the 2nd GPIO mouth P2 is high level by the second resistance pull-up.
In sum; the present invention utilizes the conventional electronic component such as simple resistance, triode, metal-oxide-semiconductor; achieve the functions such as the voltage stabilizing of power control control circuit, overcurrent protection, short-circuit protection; and circuit is simple, reliable; its physical dimension also very little, cost is low, be adapted at miniaturized electronic product is applied.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection domain that all should belong to the claim appended by the present invention.
Claims (5)
1. a power control, for controlling the power supply of electric equipment, described electric equipment comprises battery, load and processor, described power control is connected with battery, load and processor, it is characterized in that, described power control comprises: metal-oxide-semiconductor, triode, keyswitch, the first resistance, the second resistance, the 3rd resistance, the first electric capacity and the second electric capacity;
The emitter of described triode connects battery, the base stage of triode connect the drain electrode of metal-oxide-semiconductor and the 3rd resistance one end, also by the emitter of the first resistance connecting triode and battery, also by the first capacity earth, the collector of triode connects load, 2nd GPIO mouth of the other end connection handling device of the 3rd resistance by keyswitch ground connection, also by the second capacity earth, also VDD feeder ear is connected by the second resistance; One GPIO mouth of the grid connection handling device of described metal-oxide-semiconductor, the source ground of metal-oxide-semiconductor.
2. power control according to claim 1, is characterized in that, described triode is PNP triode.
3. power control according to claim 2, is characterized in that, described metal-oxide-semiconductor is NMOS tube.
4. power control according to claim 1, is characterized in that, the resistance of described first resistance is 330 Ω.
5. power control according to claim 1, is characterized in that, the capacitance of described first electric capacity and the second electric capacity is 1uF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137817.8A CN104865855A (en) | 2015-03-25 | 2015-03-25 | Power supply control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137817.8A CN104865855A (en) | 2015-03-25 | 2015-03-25 | Power supply control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104865855A true CN104865855A (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510137817.8A Pending CN104865855A (en) | 2015-03-25 | 2015-03-25 | Power supply control apparatus |
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| CN (1) | CN104865855A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022241906A1 (en) * | 2021-05-19 | 2022-11-24 | 沃太能源股份有限公司 | Control system and control method for bms power source switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI293220B (en) * | 2005-11-07 | 2008-02-01 | Benq Corp | Circuit for charging protection |
| US20090303649A1 (en) * | 2008-06-09 | 2009-12-10 | Texas Instruments Deutschland Gmbh | Enhanced charger over voltage protection fet |
| CN202798044U (en) * | 2012-07-19 | 2013-03-13 | 康佳集团股份有限公司 | Power control device |
| CN103956889A (en) * | 2014-04-30 | 2014-07-30 | 瑞斯康达科技发展股份有限公司 | Enable signal control circuit and power circuit |
-
2015
- 2015-03-25 CN CN201510137817.8A patent/CN104865855A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI293220B (en) * | 2005-11-07 | 2008-02-01 | Benq Corp | Circuit for charging protection |
| US20090303649A1 (en) * | 2008-06-09 | 2009-12-10 | Texas Instruments Deutschland Gmbh | Enhanced charger over voltage protection fet |
| CN202798044U (en) * | 2012-07-19 | 2013-03-13 | 康佳集团股份有限公司 | Power control device |
| CN103956889A (en) * | 2014-04-30 | 2014-07-30 | 瑞斯康达科技发展股份有限公司 | Enable signal control circuit and power circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022241906A1 (en) * | 2021-05-19 | 2022-11-24 | 沃太能源股份有限公司 | Control system and control method for bms power source switch |
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Application publication date: 20150826 |