CN108448725A - A kind of power control circuit and control method - Google Patents
A kind of power control circuit and control method Download PDFInfo
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- CN108448725A CN108448725A CN201810326874.4A CN201810326874A CN108448725A CN 108448725 A CN108448725 A CN 108448725A CN 201810326874 A CN201810326874 A CN 201810326874A CN 108448725 A CN108448725 A CN 108448725A
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- 102000005591 NIMA-Interacting Peptidylprolyl Isomerase Human genes 0.000 claims description 5
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- H02J13/0013—
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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Abstract
The present invention relates to a kind of power control circuits.The power control circuit coordinates the circuit of D.C. contactor to design by key switch, first passes through switch and realizes that MCU is powered on, MCU controls relay coil actuation after the power is turned on, then accesses power supply by major loop.Switch closed condition disconnects after maintaining the several seconds, and MCU and main system pass through relay main circuit power supply completely.When stable operation, switch closure signals are received again, and controlling major loop by MCU disconnects, and switch disconnects after being closed the maintenance several seconds, and MCU is also powered off, to realize that system is fully powered-off.The circuit design timesharing sequence is powered on and is powered off, suitable for rapidly and frequently connecting and disconnecting major loop, the safety and reliability of system power supply control is improved by the design of switch collocation D.C. contactor, and realize that timesharing sequence is powered on and powered off, the energy is saved, ensures safety.
Description
【Technical field】
The invention belongs to automation field, especially a kind of power supply control field.
【Background technology】
D.C. contactor automatically controlling electric appliance as one kind, is mechanical, electric utility important foundation element, is passed through in its people
The important function that can not be substituted is played in Ji.It is more and more now with high current application scenario, it needs in application process
Remote or frequent access and deenergization, when with device for switching turn-off current, if circuit voltage is higher than 10-20
Volt, electric current are more than 80-100mA, electric arc will be generated between the contact of electric appliance.Therefore D.C. contactor is more and more introduced into
In circuit design, rapidly and frequently also there is low-voltage release guard effect, control to hold for connecting and disconnecting major loop, contactor
Amount is big, is widely used in Motor Control, the electrical loads such as shop equipment, electric heater, machine-tool and various kinds electric power unit
Frequent operation and far distance controlled.But at present in major applications occasion, the line mainly by controlling D.C. contactor
The break-make of circle controls the break-make of major loop, and the turn-on and turn-off of the coil of D.C. contactor are by MCU (micro-control units again
Or microcontroller) controlled, so must assure that MCU maintains power supply, it is constantly in working condition, to ensure next time just
Often operation.Such control mode substantially increases control cost, neither power saving, also dangerous.Therefore, it is necessary to study how
It realizes the energy consumption for powering on and powering off to reduce power control circuit of the orderly progress MCU of timesharing and improves the safety of control.
【Invention content】
In order to solve the above problem in the prior art, the present invention provides a kind of power control circuit, power supply controls
Circuit include input power, D.C. contactor, switch, connector, diode D1, diode D2, current-limiting resistance, isolation optocoupler,
Power conversion module, pull-up resistor and MCU, the power control circuit realize that timesharing sequence is powered on and powered off.The input power
Input terminal be separately connected the input terminal of D.C. contactor and the input terminal of switch, the output end of D.C. contactor passes through connector
PIN2 pins connect with the anode of diode D2, the cathode of diode D2 by connector PIN1 pins and power supply modulus of conversion
Block is connected, and the output end of switch is connected by the PIN3 pins of connector with the anode of diode D1, the anode warp of diode D1
It crosses current-limiting resistance with the anode of the diode of isolation optocoupler to be connected, the cathode of diode D1 connect and leads to the cathode of diode D2
The PIN1 pins for crossing connector are connected with power conversion module, the power input port phase of power conversion module output end and MCU
Connect and export and generate MCU supply voltages VCC_MCU, the supply voltage VCC_MCU by pull-up resistor R2 respectively with light is isolated
One end of the triode of coupling is connected with MCU input ports, and the cathode of the diode of isolation optocoupler and the other end of triode connect
Ground；The output port of MCU generates the break-make of D.C. contactor coil control signal control D.C. contactor；The connector is at least
There are three pins for tool；The switch is key switch；The power conversion module is DC/DC converters；The diode is fast
Recovery diode.And the diode D1 prevents mains current from being transmitted on optocoupler, diode D2 prevents accessory power supply electric current
It is transmitted on main circuit.
And a kind of control method of power control circuit is further provided, the control method makes control circuit timesharing sequence
It powers on and powers off, specific rate-determining steps are：(1) by compressing switch, closed state 5s is maintained, realizes that MCU is powered on by switch, MCU
D.C. contactor control signal control D.C. contactor coil is sent out after the power is turned on to be attracted, and so that MCU is passed through major loop and is accessed power supply；
(2) switch closed condition disconnects after maintaining 5s, and MCU and main system pass through D.C. contactor main circuit power supply completely；(3) work as control
When circuit stability is run, switch closure signals are received again, MCU detects that input port level is pulled low, controlled by MCU
D.C. contactor coil disconnects so that major loop disconnects；(4) switch disconnects after being closed maintenance 5s, MCU power-off, and system is completely disconnected
Electricity.
The circuit design timesharing sequence is powered on and is powered off, and is suitable for rapidly and frequently connecting and disconnecting major loop, by opening
The design for closing collocation D.C. contactor improves the safety and reliability of system power supply control.
【Description of the drawings】
Attached drawing described herein is to be used to provide further understanding of the present invention, and is constituted part of this application, but
It does not constitute improper limitations of the present invention, in the accompanying drawings：
Fig. 1 is the power control circuit topological diagram of the present invention.
【Specific implementation mode】
Come that the present invention will be described in detail below in conjunction with attached drawing and specific embodiment, illustrative examples therein and says
It is bright to be only used for explaining the present invention but not as a limitation of the invention.
Such as attached drawing 1, the power control circuit includes input power, D.C. contactor K1, switch S1, connector J1, diode
D1, diode D2, current-limiting resistance R1, isolation optocoupler IC1, power conversion module M1, pull-up resistor R2 and MCU, wherein input electricity
Source distributes the power to power conversion module M1 by connector J1, and input power is carried out conversion generation by power conversion module M1
MCU supply voltage VCC_MCU generate D.C. contactor coil control signal OUT1, the coil control letter after MCU obtains electricity operation
Number control D.C. contactor is closed, and supply voltage VCC_MCU is powered to isolation optocoupler IC1 simultaneously.
When by lower switch S1 and maintaining closed state 5s, input power is accessed by the PIN3 pins of connector J1, should
The output of PIN3 pins is denoted as VCC3, and the anode of VCC3 connection diodes D1 is to by PIN1s of the diode D1 from connector J1
Pin exports, and the output of the PIN1 pins is denoted as VCC1, and VCC1 powers to power conversion module M1, converts out the confession needed for MCU
Piezoelectric voltage VCC_MCU powers to MCU.When MCU after the power is turned on, MCU input ports IN1 will be quickly obtained high level, in addition power supply electricity
Pressure VCC_MCU will drive isolation optocoupler IC1 to start to work, and MCU input ports IN1 will be isolated optocoupler and be pulled low to ground terminal, due to
There is certain time delay, MCU input ports IN1 will become ground terminal low level from the VCC_MCU high level of script for optocoupler conducting.
When MCU detects that input port IN1 is low level, D.C. contactor control signal OUT1 is then sent out, by D.C. contactor
Coil is connected, and input power is switched to the PIN2 pins of connector J1 by D.C. contactor major loop, the PIN2 pins it is defeated
Go out to be denoted as VCC2.Switch S1 is disconnected after maintaining closed state 5s, and the output VCC3 of the PIN3 pins of connector J1 will not export electricity
Pressure, the diode of isolation optocoupler will be no longer turned on, and cause the triode of isolation optocoupler that will also turn off, MCU input ports IN1 restores
To high level, final whole system provides burning voltage by the VCC2 that D.C. contactor major loop accesses.Wherein diode D1 hinders
Only mains current is transmitted on optocoupler, and diode D2 prevents accessory power supply electric current from being transmitted on main circuit.
Lower switch S1 is pressed when system stable operation, maintains closed state 5s.Input power is managed by the PIN3 of connector J1
Foot exports VCC3, and VCC3 will drive isolation optocoupler to work, and IN1 is caused to be pulled low, and subsequent MCU controls D.C. contactor K1 coils
It disconnects, D.C. contactor K1 major loops disconnect.Switch S1 is disconnected after maintaining 5s, and the VCC3 of the PIN3 accesses of connector J1 also breaks
It opens, MCU power-off.Whole system is fully powered-off, realizes system power saving and system cut-off safeguard protection.
The above is only the better embodiment of the present invention, therefore all constructions according to described in present patent application range,
The equivalent change or modification that feature and principle are done, is included within the scope of present patent application.
Claims (8)
1. a kind of power control circuit, which includes input power, D.C. contactor, switch, connector, two poles
Pipe D1, diode D2, current-limiting resistance, isolation optocoupler, power conversion module, pull-up resistor and MCU, the power control circuit are real
Existing timesharing sequence is powered on and is powered off.
2. the input terminal of power control circuit as described in claim 1, the input power is separately connected D.C. contactor
The output end of the input terminal of input terminal and switch, D.C. contactor connects by the PIN2 pins of connector and the anode of diode D2
It connects, the cathode of diode D2 is connected by the PIN1 pins of connector with power conversion module, and the output end of switch is by patching
The PIN3 pins of part are connected with the anode of diode D1, and the anode of diode D1 passes through the diode of current-limiting resistance and isolation optocoupler
Anode be connected, the cathode of diode D1 connect with the cathode of diode D2 and by the PIN1 pins of connector and power supply conversion
Module is connected, and power conversion module output end, which is connected and is exported with the power input port of MCU, generates MCU supply voltages VCC_
MCU, the supply voltage VCC_MCU by pull-up resistor R2 respectively with one end of the triode of isolation optocoupler and MCU input terminals
Mouth is connected, and the cathode of the diode of isolation optocoupler and the other end of triode are grounded；The output port of MCU generates direct current contact
Device coil control signal controls the break-make of D.C. contactor.
3. power control circuit as described in claim 1, the diode D1 prevents mains current from being transmitted on optocoupler, two
Pole pipe D2 prevents accessory power supply electric current from being transmitted on main circuit.
4. power control circuit as claimed in claim 2, the connector at least has that there are three pins.
5. power control circuit as claimed in claim 2, the switch is key switch.
6. power control circuit as claimed in claim 2, the power conversion module is DC/DC converters.
7. power control circuit as claimed in claim 2, the diode is fast recovery diode.
8. a kind of control method of power control circuit, the control method makes control circuit timesharing sequence power on and power off, specifically
Rate-determining steps are：
(1) by compressing switch, closed state 5s is maintained, realizes that MCU is powered on by switch, MCU sends out D.C. contactor control after the power is turned on
Signal control D.C. contactor coil processed is attracted, and so that MCU is passed through major loop and is accessed power supply；
(2) switch closed condition disconnects after maintaining 5s, and MCU and main system pass through D.C. contactor main circuit power supply completely；
(3) when control circuit stable operation, switch closure signals are received again, and MCU detects that input port level is drawn
It is low, D.C. contactor coil is controlled by MCU and is disconnected so that major loop disconnects；
(4) switch disconnects after being closed maintenance 5s, MCU power-off, and system is fully powered-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810326874.4A CN108448725B (en) | 2018-04-12 | 2018-04-12 | Power supply control circuit and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810326874.4A CN108448725B (en) | 2018-04-12 | 2018-04-12 | Power supply control circuit and control method |
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| Publication Number | Publication Date |
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| CN108448725A true CN108448725A (en) | 2018-08-24 |
| CN108448725B CN108448725B (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810326874.4A Active CN108448725B (en) | 2018-04-12 | 2018-04-12 | Power supply control circuit and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089714A (en) * | 2020-08-24 | 2022-02-25 | 和硕联合科技股份有限公司 | Portable electronic device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2556777Y (en) * | 2002-07-05 | 2003-06-18 | 北京通力环电气股份有限公司 | DC controller for oscillating AC contactor |
| CN2768187Y (en) * | 2004-11-17 | 2006-03-29 | 王稳忠 | Controller of DC operation contactor |
| CN201142593Y (en) * | 2007-11-30 | 2008-10-29 | 唐云雄 | Low-electromagnetic interference power supply circuit |
| CN203250689U (en) * | 2013-05-15 | 2013-10-23 | 江苏大学 | Constant magnetic-holding alternating-current contactor control circuit |
| CN205787014U (en) * | 2016-05-24 | 2016-12-07 | 深圳市沃特玛电池有限公司 | A kind of D.C. contactor main contacts testing circuit |
| WO2018019213A1 (en) * | 2016-07-24 | 2018-02-01 | 郭振华 | Intelligent control circuit, charger, leakage protector and intelligent socket |
| CN207977784U (en) * | 2018-04-12 | 2018-10-16 | 哈工大机器人（合肥）国际创新研究院 | A kind of power control circuit |
-
2018
- 2018-04-12 CN CN201810326874.4A patent/CN108448725B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2556777Y (en) * | 2002-07-05 | 2003-06-18 | 北京通力环电气股份有限公司 | DC controller for oscillating AC contactor |
| CN2768187Y (en) * | 2004-11-17 | 2006-03-29 | 王稳忠 | Controller of DC operation contactor |
| CN201142593Y (en) * | 2007-11-30 | 2008-10-29 | 唐云雄 | Low-electromagnetic interference power supply circuit |
| CN203250689U (en) * | 2013-05-15 | 2013-10-23 | 江苏大学 | Constant magnetic-holding alternating-current contactor control circuit |
| CN205787014U (en) * | 2016-05-24 | 2016-12-07 | 深圳市沃特玛电池有限公司 | A kind of D.C. contactor main contacts testing circuit |
| WO2018019213A1 (en) * | 2016-07-24 | 2018-02-01 | 郭振华 | Intelligent control circuit, charger, leakage protector and intelligent socket |
| CN207977784U (en) * | 2018-04-12 | 2018-10-16 | 哈工大机器人（合肥）国际创新研究院 | A kind of power control circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089714A (en) * | 2020-08-24 | 2022-02-25 | 和硕联合科技股份有限公司 | Portable electronic device |
| CN114089714B (en) * | 2020-08-24 | 2023-11-14 | 和硕联合科技股份有限公司 | portable electronic device |
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| Publication number | Publication date |
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| CN108448725B (en) | 2023-06-27 |
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Effective date of registration: 20200903 Address after: 230601 503, building 2, area C, intelligent equipment science and Technology Park, east of Susong road and north of Guanhai Road, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Hefei Hagong te'an Intelligent Technology Co.,Ltd. Address before: 230601 Qinghua Road, Qinghua Road, Hefei, Anhui Province, building No. 5 Applicant before: HRG INTERNATIONAL INSTITUTE FOR RESEARCH & INNOVATION |
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