CN106059060A - Dual-power switching control circuit without self-contained power supply - Google Patents

Dual-power switching control circuit without self-contained power supply Download PDF

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Publication number
CN106059060A
CN106059060A CN201610567690.8A CN201610567690A CN106059060A CN 106059060 A CN106059060 A CN 106059060A CN 201610567690 A CN201610567690 A CN 201610567690A CN 106059060 A CN106059060 A CN 106059060A
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CN
China
Prior art keywords
power supply
output signal
power
gate output
stand
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.)
Pending
Application number
CN201610567690.8A
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Chinese (zh)
Inventor
陈曦
吴泽勇
赵宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Hefei Power Supply Co of State Grid Anhui Electric Power Co Ltd
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
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Priority to CN201610567690.8A priority Critical patent/CN106059060A/en
Publication of CN106059060A publication Critical patent/CN106059060A/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
    • 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
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The invention relates to a dual-power switching control circuit without a self-contained power supply, and belongs to the technical field of electric power. The dual-power switching control circuit comprises a main power supply and a standby power supply. The main power supply and the standby power supply convert two paths of power supplies into two paths of common-ground auxiliary DC power supplies through an AC/DC power supply module. A first NOT gate, a second NOT gate and a main power supply double-pole double-throw relay are connected behind the auxiliary DC power supply connected with the main power supply. A third NOT gate, a fourth NOT gate, a NAND gate and a standby power supply double-pole double-throw relay are connected behind the auxiliary DC power supply connected with the standby power supply. The signal output end of the second NOT gate is connected with the signal input end of the NAND gate. Compared with the circuits in the prior art, firstly automatic switching of dual power supplies can be realized without misoperation so that the working reliability is high and the beneficial effects are substantial; and secondly the additional self-contained power supply is not required for supplying power to the control circuit so that the size and the cost of the circuit is reduced, and the technical scheme has wide market prospect.

Description

Without power autonomous twin-power switch control circuit
Technical field
The present invention relates to a kind of twin-power switch control circuit, a kind of without power autonomous twin-power switch control Circuit processed, belongs to technical field of electric power.
Background technology
For realizing uninterrupted power supply, Dual-power automatic switching control circuit needs automatically switch to standby when main power source power-off With power supply, it is ensured that the uninterrupted power supply of power supply, for realizing the automatic switchover of dual power supply, existing twin-power switch is broadly divided into out Closing body and control circuit two parts, control circuit needs to use power autonomous power supply, thus increase on-off circuit volume and Cost.
Summary of the invention
For solving prior art needs the most power autonomous problem, propose a kind of without power autonomous dual power supply from Dynamic control switching circuit, it is not necessary to extra power autonomous power to control circuit, only by the control of logic circuit, automatically selects Being realized auxiliary power supply and Dual-power automatic switching by main power source or stand-by power supply, concrete technical scheme is as follows:
Without power autonomous twin-power switch control circuit, including main power source and stand-by power supply, described main power source and standby electricity Two-way Power convert is all become two-way auxiliary DC power supply altogether by AC/DC power module by source, and described main power source is even The first not gate, the second not gate and main power source dpdt relay it is connected with in turn after the auxiliary DC power supply connect, described It is connected with the 3rd not gate, the 4th not gate, NAND gate and stand-by power supply in turn after the auxiliary DC power supply that stand-by power supply connects Dpdt relay, the signal output part of described second not gate is connected to the signal input part of NAND gate.
As the improvement of technique scheme, the voltage of the auxiliary DC power supply that described main power source connects is Vcc1, The voltage of the auxiliary DC power supply that described stand-by power supply connects is Vcc2, and the geometrical relationship of described Vcc1 with Vcc2 is: Vcc1 ＜ Vcc2.
As the improvement of technique scheme, described Vcc1=12V, described Vcc2=15V.
As the improvement of technique scheme, it is also associated with drop-down after the auxiliary DC power supply that described main power source connects Resistance.
As the improvement of technique scheme, described electric current flows through second and non-forms the second not gate output signal, institute behind the door Stating electric current and flow through the 4th non-formation the 4th not gate output signal behind the door, described electric current forms NAND gate output letter after flowing through NAND gate Number；Described second not gate output signal controls the opening and closing of main power source dpdt relay, and described NAND gate output signal controls The opening and closing of stand-by power supply dpdt relay；Described second not gate output signal and the 4th not gate output signal collectively as with The input signal of not gate.
During as the improvement of technique scheme, described main power source and stand-by power supply normal power supply, the second not gate output letter Number and the 4th not gate output signal be high level, described second not gate output signal control main power source dpdt relay by Normally opened transferring to normally closed, NAND gate output signal is low level, and described NAND gate output signal controls stand-by power supply DPDT and continues Electrical equipment maintains a normally open state, and now circuit uses main power source output.
As the improvement of technique scheme, described main power source can normal power supply, stand-by power supply no power time, the second not gate Output signal is high level, described second not gate output signal control main power source dpdt relay by normally opened transfer to normally closed, 4th not gate output signal is high-impedance state, and NAND gate output signal is high-impedance state, and described NAND gate output signal controls standby electricity Source dpdt relay maintains a normally open state, and now circuit uses main power source output.
As the improvement of technique scheme, described main power source no power, stand-by power supply can normal power supply time, the second not gate Output signal is low level, and described second not gate output signal controls main power source dpdt relay and maintains a normally open state, the Four not gate output signals are high level, and NAND gate output signal is high level, and described NAND gate output signal controls stand-by power supply Dpdt relay by normally opened transfer to normally closed, now circuit use stand-by power supply output.
Technique scheme is drawn control circuit power supply interface by the stand-by power supply of main power source respectively, uses AC/DC power supply Module is converted into two-way auxiliary DC power supply, and by two-way power supply altogether, exports two line states by logic gates and believe Number, indicate respectively the power supply state of main power source and stand-by power supply, by logical judgment, after this two paths of signals is combined, End form becomes two path control signal, respectively as main power source and the control signal of stand-by power supply DPDT AC relay, it is achieved The automatic switchover of dual power supply, compared with prior art, first, it is possible to realize the automatic switchover of dual power supply, do not have misoperation, Functional reliability is high, and beneficial effect is notable；Second, it is not necessary to extra power autonomous power to control circuit, reduce circuit Volume and cost, wide market.
Accompanying drawing explanation
Fig. 1 is a kind of circuit diagram without power autonomous twin-power switch control circuit of the present invention.
Detailed description of the invention
As it is shown in figure 1, the invention provides a kind of without power autonomous twin-power switch control circuit, including main power sourceu 1And stand-by power supplyu 2, two-way Power convert is become two-way auxiliary direct current supply electric by AC/DC power module by respectively Source, and by two-way power supply altogether, wherein the voltage of the auxiliary DC power supply that main power source is corresponding is Vcc1, and stand-by power supply is corresponding Auxiliary DC power supply voltage be Vcc2, in order to ensure the NAND gate input signal of NAND gate U5 in circuits 1At height Less than supply voltage during level state, Vcc1 needs less than Vcc2, such as Vcc1=12V, Vcc2=15V.Main power sourceu 1Connect Auxiliary DC power supply after be connected with the first not gate U1, the second not gate U2 and main power source dpdt relay J1 in turn, Wherein, main power sourceu 1It is also associated with pull down resistor R, stand-by power supply after the auxiliary DC power supply connectedu 2The auxiliary connected The 3rd not gate U3, the 4th not gate U4, NAND gate U5 and stand-by power supply DPDT relay it is connected with in turn after DC power supply Device J2, wherein the first not gate U1 and the second not gate U2 is powered by Vcc1, the 3rd not gate U3, the 4th not gate U4 and NAND gate U5 by Vcc2 powers.
Electric current forms the second not gate output signal after flowing through the second not gate U2s 1, electric current flows through and forms the after the 4th not gate U4 Four not gate output signalss 2, electric current forms NAND gate output signal after flowing through NAND gate U5s 3；Wherein, the second not gate output letter Numbers 1Control the opening and closing of main power source dpdt relay J1, NAND gate output signals 3Control stand-by power supply DPDT to continue The opening and closing of electrical equipment J2；Wherein the second not gate output signals 1With the 4th not gate output signals 2Defeated collectively as NAND gate U5 Enter signal.
This circuit four kinds of input conditions of existence:
(1) main power sourceu 1And stand-by power supplyu 2All can normal power supply, now the second not gate output signals 1With the 4th not gate output Signals 2It is high level, the second not gate output signals 1Control main power source dpdt relay J1 by normally opened transfer to normally closed, NAND gate output signals 3For low level, NAND gate output signals 3Control stand-by power supply dpdt relay J2 often to keep Open state, now circuit selects main power sourceu 1Power supply, circuit exportsu o=u 1；
(2) main power sourceu 1Can normal power supply, stand-by power supplyu 2No power, now the second not gate output signals 1For high level, Two not gate output signalss 1Control main power source dpdt relay J1 by normally opened transfer to normally closed, the 4th not gate output signals 2 For high-impedance state, NAND gate output signals 3For high-impedance state, NAND gate output signals 3Control stand-by power supply dpdt relay J2 maintains a normally open state, and now circuit still selects main power sourceu 1Power supply, i.e. circuit outputu o=u 1；
(3) main power sourceu 1No power, stand-by power supplyu 2Can normal power supply, the second not gate U2 is output as high-impedance state, but due under Pull-up resistorREffect, the second not gate output signals 1For low level, the second not gate output signals 1Control main power source double-pole double Throw relay J 1 and maintain a normally open state, the 4th not gate output signals 2For high level, NAND gate output signals 3For high level, NAND gate output signals 3Control stand-by power supply dpdt relay J2 by normally opened transfer to normally closed, now circuit select standby electricity Sourceu 2Power supply, i.e. circuit outputu o=u 2。
(4) main power sourceu 1, stand-by power supplyu 2All no power, now the second not gate output signalss 1With NAND gate output letter Numbers 3It is high-impedance state, main power source dpdt relay J1 and stand-by power supply dpdt relay J2 to be all failure to actuate, keeps Normally open, circuit does not export, and in above-mentioned four kinds of situations, the logical relation of each signal is as shown in table 1:
The circuit state that the logical relation of table 1 circuit signal is corresponding
Main power source Stand-by power supply s 1 s 2 s 3 J1 J2 u o
Can normal power supply Can normal power supply 1 1 0 Guan Bi Open circuit u 1
Can normal power supply No power 1 H 0 Guan Bi Open circuit u 1
No power Can normal power supply 0 1 1 Open circuit Guan Bi u 2
No power No power H H H Open circuit Open circuit Do not export
According to above-mentioned principle, the circuit of this invention can be according to main power sourceu 1And stand-by power supplyu 2Different conditions be powered The automatic switchover of circuit.
Above embodiments of the invention are described in detail, but described content have been only presently preferred embodiments of the present invention, Being not to be regarded as the practical range for limiting the present invention, all equalizations made according to the scope of the invention change and improvement etc., all should Within still belonging to covering scope of the present invention.

Claims (8)

1. without power autonomous twin-power switch control circuit, including main power source and stand-by power supply, it is characterised in that described master Two-way Power convert is all become two-way auxiliary DC power supply altogether by AC/DC power module by power supply and stand-by power supply, It is connected with the first not gate, the second not gate and main power source DPDT in turn after the auxiliary DC power supply that described main power source connects Relay, is connected with the 3rd not gate, the 4th not gate, NAND gate in turn after the auxiliary DC power supply that described stand-by power supply connects With stand-by power supply dpdt relay, the signal output part of described second not gate is connected to the signal input part of NAND gate.
2. as claimed in claim 1 without power autonomous twin-power switch control circuit, it is characterised in that described main power source The voltage of the auxiliary DC power supply connected is Vcc1, and the voltage of the auxiliary DC power supply that described stand-by power supply connects is Vcc2, the geometrical relationship of described Vcc1 with Vcc2 is: Vcc1 ＜ Vcc2.
3. as claimed in claim 2 without power autonomous twin-power switch control circuit, it is characterised in that described Vcc1= 12V, described Vcc2=15V.
4. as claimed in claim 2 without power autonomous twin-power switch control circuit, it is characterised in that described main power source It is also associated with pull down resistor after the auxiliary DC power supply connected.
5. as claimed in claim 4 without power autonomous twin-power switch control circuit, it is characterised in that described electric current stream Non-forming the second not gate output signal behind the door through second, described electric current flows through the 4th and non-forms the 4th not gate output signal behind the door, Described electric current forms NAND gate output signal after flowing through NAND gate；Described second not gate output signal controls main power source DPDT The opening and closing of relay, described NAND gate output signal controls the opening and closing of stand-by power supply dpdt relay；Described second not gate Output signal and the 4th not gate output signal are collectively as the input signal of NAND gate.
6. as claimed in claim 5 without power autonomous twin-power switch control circuit, it is characterised in that described main power source During with stand-by power supply normal power supply, the second not gate output signal and the 4th not gate output signal are high level, described second non- Door output signal controls main power source dpdt relay and is transferred to normally closed by normally opened, and NAND gate output signal is low level, described NAND gate output signal controls stand-by power supply dpdt relay and maintains a normally open state, and now circuit uses main power source output.
7. as claimed in claim 5 without power autonomous twin-power switch control circuit, it is characterised in that described main power source Can normal power supply, stand-by power supply no power time, the second not gate output signal is high level, described second not gate output signal control Main power source dpdt relay is transferred to normally closed by normally opened, and the 4th not gate output signal is high-impedance state, and NAND gate output signal is High-impedance state, described NAND gate output signal controls stand-by power supply dpdt relay and maintains a normally open state, and now circuit uses Main power source exports.
8. as claimed in claim 5 without power autonomous twin-power switch control circuit, it is characterised in that described main power source No power, stand-by power supply can normal power supply time, the second not gate output signal is low level, described second not gate output signal control Main power source dpdt relay maintains a normally open state, and the 4th not gate output signal is high level, and NAND gate output signal is high Level, described NAND gate output signal control stand-by power supply dpdt relay by normally opened transfer to normally closed, now circuit use Stand-by power supply exports.
CN201610567690.8A 2016-07-19 2016-07-19 Dual-power switching control circuit without self-contained power supply Pending CN106059060A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107733073A (en) * 2017-11-01 2018-02-23 浙江现代电气有限公司 A kind of main secondary power switching circuit
CN110224405A (en) * 2019-07-12 2019-09-10 威创集团股份有限公司 The switching device and method of more power grids

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101872997A (en) * 2009-04-21 2010-10-27 联咏科技股份有限公司 Switch control method capable of continuously providing power and device thereof as well as power supply system
CN102447302A (en) * 2010-09-30 2012-05-09 苏州捷泰科信息技术有限公司 Main-standby power supply switching control method and device
CN104684152A (en) * 2013-11-28 2015-06-03 深圳市海洋王照明工程有限公司 Emergency light control circuit and lamp
CN104682541A (en) * 2013-11-27 2015-06-03 深圳市海洋王照明工程有限公司 Emergency lamp control circuit and emergency lamp control device
CN105244997A (en) * 2015-10-30 2016-01-13 国家电网公司 Double power switching device for acquisition terminal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101872997A (en) * 2009-04-21 2010-10-27 联咏科技股份有限公司 Switch control method capable of continuously providing power and device thereof as well as power supply system
CN102447302A (en) * 2010-09-30 2012-05-09 苏州捷泰科信息技术有限公司 Main-standby power supply switching control method and device
CN104682541A (en) * 2013-11-27 2015-06-03 深圳市海洋王照明工程有限公司 Emergency lamp control circuit and emergency lamp control device
CN104684152A (en) * 2013-11-28 2015-06-03 深圳市海洋王照明工程有限公司 Emergency light control circuit and lamp
CN105244997A (en) * 2015-10-30 2016-01-13 国家电网公司 Double power switching device for acquisition terminal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107733073A (en) * 2017-11-01 2018-02-23 浙江现代电气有限公司 A kind of main secondary power switching circuit
CN107733073B (en) * 2017-11-01 2024-03-15 浙江现代电气有限公司 Main and standby power supply switching circuit
CN110224405A (en) * 2019-07-12 2019-09-10 威创集团股份有限公司 The switching device and method of more power grids

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Effective date of registration: 20170413

Address after: 230000 Susong Road, Anhui, China, No. 133, No.

Applicant after: Guo Wang Anhui Power Company Hefei Power Supply Company

Applicant after: State Grid Corporation of China

Address before: Wangjiang Road in Baohe District of Hefei city of Anhui Province, No. 325 230051

Applicant before: Chen Xi

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Application publication date: 20161026

RJ01 Rejection of invention patent application after publication