CN207896719U - A kind of low-power consumption double supply automatic switch-over circuit - Google Patents
A kind of low-power consumption double supply automatic switch-over circuit Download PDFInfo
- Publication number
- CN207896719U CN207896719U CN201820353081.7U CN201820353081U CN207896719U CN 207896719 U CN207896719 U CN 207896719U CN 201820353081 U CN201820353081 U CN 201820353081U CN 207896719 U CN207896719 U CN 207896719U
- Authority
- CN
- China
- Prior art keywords
- power supply
- circuit
- relay
- connect
- resistance
- Prior art date
- 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.)
- Active
Links
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model discloses a kind of low-power consumption double supply automatic switch-over circuits, including DC power supply power supply module, storage battery power supply module, power supply switch circuit, main control singlechip, voltage detection circuit and power control circuit；The power supply switch circuit is the normally opened two-way normally closed relay of two-way, and the output end of DC power supply power supply module and storage battery power supply module is connect with relay respectively, and relay is connect with voltage detection circuit；The control terminal of voltage detection circuit is connect with main control singlechip, and the output end of voltage detection circuit and the input terminal of power control circuit connect, and the output end of power control circuit exports supply voltage.
Description
Technical field
The utility model is related to technical field of power management, especially a kind of low-power consumption double supply automatic switch-over circuit.
Background technology
Low-power consumption double supply automatic switch-over circuit is a kind of circuit to work dedicated for dual power supply.Currently at various scenes
Electronic product application in, equipment does not need to full speed running in most cases, and it is nothing to need the time point run
The variation depending on external factor of rule.Traditional Switching power mode is electrically driven switching, if triode switches, metal-oxide-semiconductor
Switching needs to reach certain power consumption and could switch, to increase battery feed circuit low work(when using these circuits are run
Consume design difficulty.
Utility model content
The purpose of this utility model is to provide a kind of low-power consumption double supply automatic switch-over circuit, and circuit design is simple, circuit
Power consumption is extremely low.
To achieve the above object, the utility model uses following technical proposals：
A kind of low-power consumption double supply automatic switch-over circuit, including DC power supply power supply module, storage battery power supply module, power supply
Switching circuit, main control singlechip, voltage detection circuit and power control circuit；The power supply switch circuit is that two-way is normally opened
The output end of two-way normally closed relay, DC power supply power supply module and storage battery power supply module is connect with relay respectively, relay
Device is connect with voltage detection circuit；The control terminal of voltage detection circuit is connect with main control singlechip, supply voltage inspection
The output end of slowdown monitoring circuit and the input terminal of power control circuit connect, and the output end of power control circuit exports supply voltage.
Further, normally-closed contact VBattry, BGND of relay connect with the positive and negative anodes of storage battery power supply module respectively
Connect, the normally opened contact VPower of relay, one end of relay coil are connect with DC power supply power supply module, relay it is another
The other end ground connection of a normally opened contact GND, relay coil；The normally-closed contact VCC of relay and voltage detection circuit
Input terminal connects.
Further, the voltage detection circuit includes diode D12, resistance R23 and R24, diode D12 anodes
DC power supply power supply module interface is connect, cathode is connect with one end of resistance R23, and the other end of resistance R23 connects microcontroller and resistance
R24, resistance R24 other ends ground connection.
Further, the power control circuit includes triode Q4, metal-oxide-semiconductor Q2, and the base stage of the triode Q4 passes through
Resistance R12 connection microcontrollers, collector meet the grid and resistance R8 of metal-oxide-semiconductor Q2, emitter ground connection, the resistance R8 other ends and P-
With power supply VCC is met, the source electrode of metal-oxide-semiconductor Q2 meets out-put supply VCC1 for metal-oxide-semiconductor drain electrode.
The utility model has the beneficial effects that
The utility model uses low-power relay switching mode, in battery powered switching circuit up to 0 power consumption, into
The power consumption for entering entire circuit when battery powered mode is less than 15 microamperes.This circuit is simple, reasonable design, eliminates driving switching electricity
Road is difficult, solves driving switching circuit in battery powered there are the disadvantage of power consumption, reduces power consumption.
Description of the drawings
Fig. 1 is the positive structural schematic diagram of the utility model；
Fig. 2 is the utility model power supply switch circuit schematic diagram；
Fig. 3 is the utility model voltage detection circuit schematic diagram；
Fig. 4 is the utility model power control circuit schematic diagram.
Specific implementation mode
In order to clarify the technical characteristics of the invention, below by specific implementation mode, and its attached drawing is combined, to this hair
It is bright to be described in detail.Following disclosure provides many different embodiments or example is used for realizing the different knots of the present invention
Structure.In order to simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.In addition, the present invention can be with
Repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself is not indicated
Relationship between various embodiments and/or setting is discussed.It should be noted that illustrated component is not necessarily to scale in the accompanying drawings
It draws.Present invention omits the descriptions to known assemblies and treatment technology and process to avoid the present invention is unnecessarily limiting.
As shown in Figure 1, a kind of low-power consumption double supply automatic switch-over circuit, including DC power supply power supply module, accumulator supply
Electric module, power supply switch circuit, main control singlechip, voltage detection circuit and power control circuit；The power supply switching electricity
Road is the normally opened two-way normally closed relay of two-way, the output end of DC power supply power supply module and storage battery power supply module respectively with relay
Device connects, and relay is connect with voltage detection circuit；The control terminal of voltage detection circuit is connect with main control singlechip,
The output end of voltage detection circuit and the input terminal of power control circuit connect, and the output end output of power control circuit supplies
Piezoelectric voltage.
As shown in Fig. 2, normally-closed contact VBattry, BGND of relay connect with the positive and negative anodes of storage battery power supply module respectively
Connect, the normally opened contact VPower of relay, one end of relay coil are connect with DC power supply power supply module, relay it is another
The other end ground connection of a normally opened contact GND, relay coil；The normally-closed contact VCC of relay and voltage detection circuit
Input terminal connects.
When there is 12V DC power access circuit, relay coil is powered, and normal-closed end is opened, and normally open end is closed, accumulator
Power supply is cut off, and 12V DC power supply starts to power to circuit, and voltage detection circuit is powered, such main control singlechip I/O port
On will produce a level rising edge, main control singlechip detects the rising edge, to waking up microcontroller.Subsequent master control monolithic
The power supply of power control circuit is exported and is opened by machine, is powered for late-class circuit.When 12V DC power supply disconnects, relay coil
Power-off, relay recovery initial conditions are battery powered, and single-chip I/O mouth detects that failing edge signal, subsequent microcontroller will be electric
The power supply output of source control section is closed, and microcontroller opens external interrupt and enters low-power consumption mode, waits for 12V DC plant-grid connection
Microcontroller is waken up, epicycle work is completed.
As shown in figure 3, voltage detection circuit includes diode D12, resistance R23 and R24, diode D12 anodes connect
DC power supply power supply module interface, cathode are connect with one end of resistance R23, and the other end of resistance R23 connects microcontroller and resistance
R24, resistance R24 other ends ground connection.
As shown in figure 4, power control circuit includes triode Q4, metal-oxide-semiconductor Q2, the base stage of the triode Q4 passes through resistance
R12 connection microcontrollers, collector connect the grid and resistance R8 of metal-oxide-semiconductor Q2, emitter ground connection, and the resistance R8 other ends are managed with P-MOS
With power supply VCC is met, the source electrode of metal-oxide-semiconductor Q2 meets out-put supply VCC1 for drain electrode.
Triode Q4 is N-channel triode, when " Contorl_VIN " signal being connected with main control singlechip is high level,
Triode Q4 collector emitters are connected, and at this moment metal-oxide-semiconductor Q2 grids are low level, the conducting of metal-oxide-semiconductor Q2 source drains, control output
Power supply VCC1.When " Contorl_VIN " signal is low level, three pole Q4 pipe collector emitters cut-offs, metal-oxide-semiconductor Q2 grids are height
Level, metal-oxide-semiconductor Q2 drain-sources cut-off, to stop out-put supply VCC1.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but not to this practicality newly
The limitation of type protection domain, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel need not make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (4)
1. a kind of low-power consumption double supply automatic switch-over circuit, characterized in that including DC power supply power supply module, storage battery power supply mould
Block, power supply switch circuit, main control singlechip, voltage detection circuit and power control circuit；The power supply switch circuit is
The output end of the normally opened two-way normally closed relay of two-way, DC power supply power supply module and storage battery power supply module connects with relay respectively
It connects, relay is connect with voltage detection circuit；The control terminal of voltage detection circuit is connect with main control singlechip, power supply
The output end of voltage detecting circuit and the input terminal of power control circuit connect, the output end output power supply electricity of power control circuit
Pressure.
2. a kind of low-power consumption double supply automatic switch-over circuit as described in claim 1, characterized in that the normally-closed contact of relay
VBattry, BGND are connect with the positive and negative anodes of storage battery power supply module respectively, normally opened contact VPower, the relay line of relay
One end of circle is connect with DC power supply power supply module, another normally opened contact GND of relay, another termination of relay coil
Ground；The normally-closed contact VCC of relay and the input terminal of voltage detection circuit connect.
3. a kind of low-power consumption double supply automatic switch-over circuit as claimed in claim 2, characterized in that the supply voltage detection
Circuit includes diode D12, resistance R23 and R24, and diode D12 anodes connect DC power supply power supply module interface, cathode and resistance
One end of R23 connects, and the other end of resistance R23 connects microcontroller and resistance R24, resistance R24 other ends ground connection.
4. a kind of low-power consumption double supply automatic switch-over circuit as described in claim 1, characterized in that the power control circuit
Including triode Q4, for the base stage of metal-oxide-semiconductor Q2, the triode Q4 by resistance R12 connection microcontrollers, collector meets metal-oxide-semiconductor Q2
Grid and resistance R8, emitter ground connection, the drain electrode of the resistance R8 other ends and P-MOS pipes is the same as connecing power supply VCC, the source electrode of metal-oxide-semiconductor Q2
Meet out-put supply VCC1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353081.7U CN207896719U (en) | 2018-03-15 | 2018-03-15 | A kind of low-power consumption double supply automatic switch-over circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353081.7U CN207896719U (en) | 2018-03-15 | 2018-03-15 | A kind of low-power consumption double supply automatic switch-over circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207896719U true CN207896719U (en) | 2018-09-21 |
Family
ID=63541395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820353081.7U Active CN207896719U (en) | 2018-03-15 | 2018-03-15 | A kind of low-power consumption double supply automatic switch-over circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207896719U (en) |
-
2018
- 2018-03-15 CN CN201820353081.7U patent/CN207896719U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102320275B (en) | Power-off delay circuit of hybrid control unit for electric automobile | |
| CN202712965U (en) | Intelligentization energy-saving system capable of automatic switches between AC (alternating current) power supply and battery | |
| CN203368132U (en) | Power switching circuit and dual-power supply device | |
| CN202917976U (en) | Protective device of solar energy LED power supply input polarity reversal connection | |
| CN101399536A (en) | On/off control circuit for light touch switch in micro-controller system and control method | |
| CN106787129A (en) | A kind of power-supply management system for being automatically obtained main power supply switching | |
| CN217335186U (en) | Dual-power automatic switching circuit and dual-power supply circuit | |
| CN201178462Y (en) | Low power consumption standby power source circuit | |
| CN206639002U (en) | A kind of magnetic induction low-power consumption wake-up circuit | |
| CN207896719U (en) | A kind of low-power consumption double supply automatic switch-over circuit | |
| CN205489708U (en) | Power supply circuit with input source recognition function | |
| CN202772861U (en) | Startup and shutdown circuit used in fish finder | |
| CN104914966A (en) | Single-chip microcomputer self-outage restarting circuit | |
| CN210780130U (en) | Power-off control circuit | |
| CN104600660A (en) | Low-power-consumption short circuit protection circuit | |
| CN203386145U (en) | USB energy-saving power supply adopting electronic switch | |
| CN106505715A (en) | A kind of green power supply for computer | |
| CN204089330U (en) | A kind of adaptive power-supply battery supplies power with double circuit device | |
| CN206727643U (en) | A kind of under-voltage and overvoltage crowbar | |
| CN204652345U (en) | A kind of novel switched amount input circuit | |
| CN206302207U (en) | A kind of power-supply management system for being automatically obtained main power supply switching | |
| CN204302733U (en) | A kind of ON-OFF control circuit based on touch controlled key | |
| CN201926699U (en) | Low-voltage circuit for power failure detection | |
| CN203350340U (en) | Full-range low power consumption DC voltage detecting circuit | |
| CN207518351U (en) | A kind of intelligent mobile inverter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |