CN103683442A - An emergency power supply device with an independent safe voltage and a working method thereof - Google Patents
An emergency power supply device with an independent safe voltage and a working method thereof Download PDFInfo
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- CN103683442A CN103683442A CN201310410978.0A CN201310410978A CN103683442A CN 103683442 A CN103683442 A CN 103683442A CN 201310410978 A CN201310410978 A CN 201310410978A CN 103683442 A CN103683442 A CN 103683442A
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Abstract
The invention relates to the technical field of electrical control, and specifically relates to an emergency power supply device with an independent safe voltage and a working method thereof. The emergency power supply device comprises an LKC charger module, a DN electric energy storage unit, an NB power inversion module, a DY switch power supply module, a QH switching module and a DSP controller. According to the emergency power supply device with the independent safe voltage, when a commercial power is normal, a QFB breaker is closed, and the DC24V safe voltage is output through a rectification circuit and a chopper circuit of a DY switch power supply module, and a power supply that a load actually uses at the moment is commercial power from an electrical network. When the commercial power is abnormal, the DN electric energy storage unit outputs a DC220V directly to provide electric power for the DY switch power supply module, and the DC24V safe voltage is output through the DC220V/DC24V chopper circuit of the DY switch power supply module, and at the moment, the power supply that the user load uses comes from the DN electric energy storage unit. Since power supplying of alternating currents does not need to be provided for the switch power supply module through the power inversion module, so that the load of the power inversion module is reduced, and a normal output of the DC24V safe voltage is ensured.
Description
Technical field
The present invention relates to Electrical Control Technology field, specifically relate to a kind of emergency power supply unit with independent safe voltage and method of work thereof.
Background technology
Emergency power supply is used for emergency lighting and evacuation indication system, and generally, output AC 220V voltage is emergence lighting lamp and the power supply of exit signs light fixture.Country progressively improves the requirement of Electrical Safety now, and the rated value of China's standard regulation power-frequency voltage effective value has 42V, 36V, 24V, 12V and 6V.The hand-held illuminating lamp of using in having shock hazard environment and local lighting lamp should adopt 36V or 24V safe voltage.Emergency power supply also starts to adopt DC24V safe voltage supply power mode.
Existing emergency power supply DC24V supply power mode is single ac power supply method, and as shown in Figure 1, concrete scheme is as follows:
1), when civil power is normal, closed QFA, civil power, through KM1, is directly exported 220V alternating current; At output terminals A C220V, through Switching Power Supply AC/DC conversion, export DC24V safe voltage; If closed in the case QFC and QFD, civil power charges to DN power storaging unit through LKC charger module.
2), when city's electrical anomaly, DN power storaging unit through NB power inverting module again through KM2 output 220V alternating current; At output terminals A C220V, through Switching Power Supply AC/DC conversion, export DC24V safe voltage.
This supply power mode can increase the burden of power inverting module, reduces the real output of power inverting module; When DC24V safe voltage power output is too high, can cause power inverting module overload, affect the normal use of emergency power supply.
Summary of the invention
For the technical problem existing in prior art, the invention provides a kind of emergency power supply unit with independent safe voltage and method of work thereof, this emergency power supply unit adopts two kinds of supply power modes of alternating current-direct current, and assurance DC24V safe voltage is normally exported.
To achieve these goals, the technical scheme adopting is: a kind of emergency power supply unit with independent safe voltage, include LKC charger module, DN power storaging unit, NB power inverting module, DY switch power module, QH handover module and dsp controller, wherein
Civil power is connected with the input of the KM1 A.C. contactor of QH handover module by QFA circuit breaker;
The input of LKC charger module is connected on the circuit between QFA circuit breaker and the input of KM1 A.C. contactor by QFC circuit breaker, and the output of LKC charger module is connected with the input of DN power storaging unit by QFD circuit breaker;
The output of DN power storaging unit is connected with the input of NB power inverting module, the output of NB power inverting module connects by the input of the KM2 A.C. contactor of QH handover module, and the output of KM1 A.C. contactor, KM2 A.C. contactor is all connected with the emergent output bus of AC220V;
The input of DY switch power module respectively be connected the QFB circuit breaker of civil power, the output of DN power storaging unit connects, the output of DY switch power module is connected with DC24V safe voltage output bus;
Dsp controller is connected with LKC charger module, NB power inverting module, DY switch power module, QH handover module respectively.
A method of work with the emergency power supply unit of independent safe voltage, includes DC24V safe voltage output bus method of supplying power to, is specially:
When civil power is normal, closed QFB circuit breaker, through the AC220V/DC220V of DY switch power module rectification circuit and DC220V/DC24V chopper circuit, output DC24V safe voltage;
During city electrical anomaly, the output of DN power storaging unit DC220V directly give the power supply of DY switch power module, through the DC220V/DC24V of DY switch power module chopper circuit, and output DC24V safe voltage.
With a method of work for the emergency power supply unit of independent safe voltage, include the emergent output bus method of supplying power to of AC220V, be specially:
When civil power is normal, civil power is directly powered to the emergent output bus of AC220V through QFA circuit breaker and KM1 A.C. contactor; Civil power is powered to LKC charger module by QFC circuit breaker, and LKC charger module is charged to DN power storaging unit by QFD circuit breaker;
When mains-supplied is interrupted or line voltage transfinites, disconnect immediately KM1 A.C. contactor, operation NB power inverting module, the direct current energy of DN power storaging unit is reverse into AC energy, at <5ms, in the time, through KM2 A.C. contactor, export to the emergent output bus of AC220V;
When city power recovery is normal, after the control system of DPS controller detection civil power is normal, by synchronous grid-connected handoff technique, closed KM1 A.C. contactor, powers through KM1 A.C. contactor civil power to the emergent output bus of AC220V.
Emergency power supply unit with independent safe voltage of the present invention and method of work thereof, compared with prior art, its beneficial effect shows:
1), civil power is when normal, closed QFB circuit breaker, through the AC220V/DC220V of DY switch power module rectification circuit and DC220V/DC24V chopper circuit, output DC24V safe voltage, the power supply of the actual use of now load is the civil power from electrical network.During city electrical anomaly, the output of DN power storaging unit DC220V directly give the power supply of DY switch power module, through the DC220V/DC24V of DY switch power module chopper circuit, and output DC24V safe voltage.Now, the power supply that user load is used comes from DN power storaging unit.Due to without powering to switch power module through power inverting module output AC, can alleviate the burden of power inverting module, thereby guarantee the normal output of DC24V safe voltage.
2) when, civil power is normal, civil power is directly powered to the emergent output bus of AC220V through QFA circuit breaker and KM1 A.C. contactor, whole emergency power supply unit carries out city's electro-detection and DN power storaging unit Charge Management, NB power inverting module is work not, the power supply of the now actual use of user load is the civil power from electrical network, therefore, NB power inverting module always in resting state, can effectively reach energy-conservation effect when civil power is normal.Civil power is powered to LKC charger module by QFC circuit breaker, LKC charger module is charged to DN power storaging unit by QFD circuit breaker, LKC charger module is just carried out Charge Management to DN power storaging unit, does not have the ability that DC power supply is directly provided to DN power storaging unit.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram of emergency power supply of the prior art.
Fig. 2 is the electrical schematic diagram of the emergency power supply unit with independent safe voltage of the present invention.
Fig. 3 is the electrical schematic diagram of DC24V safe voltage output bus method of supplying power to.
Embodiment
For the ease of it will be appreciated by those skilled in the art that the present invention is further illustrated below in conjunction with accompanying drawing.As a kind of preferred embodiment of the present invention, refer to Fig. 2 and 3, emergency power supply unit with independent safe voltage, include LKC charger module, DN power storaging unit (for example storage battery), NB power inverting module, DY switch power module, QH handover module and dsp controller, wherein:
Civil power is connected with the input of the KM1 A.C. contactor of QH handover module by QFA circuit breaker.
The input of LKC charger module is connected on the circuit between QFA circuit breaker and the input of KM1 A.C. contactor by QFC circuit breaker, and the output of LKC charger module is connected with the input of DN power storaging unit by QFD circuit breaker.
The output of DN power storaging unit is connected with the input of NB power inverting module, the output of NB power inverting module connects by the input of the KM2 A.C. contactor of QH handover module, and the output of KM1 A.C. contactor, KM2 A.C. contactor is all connected with the emergent output bus of AC220V.
The input of DY switch power module respectively be connected the QFB circuit breaker of civil power, the output of DN power storaging unit connects, the output of DY switch power module is connected with DC24V safe voltage output bus.
Dsp controller is connected with LKC charger module, NB power inverting module, DY switch power module, QH handover module respectively.
Emergency power supply unit with independent safe voltage of the present invention, its method of work mainly includes the emergent output bus method of supplying power to of AC220V and DC24V safe voltage output bus method of supplying power to.
1., DC24V safe voltage output bus method of supplying power to is:
When civil power is normal, closed QFB circuit breaker, through the AC220V/DC220V of DY switch power module rectification circuit and DC220V/DC24V chopper circuit, output DC24V safe voltage, the power supply of the actual use of now load is the civil power from electrical network.
During city electrical anomaly, the output of DN power storaging unit DC220V directly give the power supply of DY switch power module, through the DC220V/DC24V of DY switch power module chopper circuit, and output DC24V safe voltage.Now, the power supply that user load is used comes from DN power storaging unit.Due to without powering to switch power module through power inverting module output AC, can alleviate the burden of power inverting module.
2., the emergent output bus method of supplying power to of AC220V is:
When civil power is normal, civil power is directly powered to the emergent output bus of AC220V through QFA circuit breaker and KM1 A.C. contactor, whole emergency power supply unit carries out city's electro-detection and DN power storaging unit Charge Management, NB power inverting module is work not, the power supply of the now actual use of user load is the civil power from electrical network, therefore, NB power inverting module always in resting state, can effectively reach energy-conservation effect when civil power is normal.Civil power is powered to LKC charger module by QFC circuit breaker, LKC charger module is charged to DN power storaging unit by QFD circuit breaker, LKC charger module is just carried out Charge Management to DN power storaging unit, does not have the ability that DC power supply is directly provided to DN power storaging unit.
When mains-supplied is interrupted or when line voltage transfinites (± 20% specified input voltage), emergency power supply unit disconnects KM1 A.C. contactor immediately, operation NB power inverting module, the direct current energy of DN power storaging unit is reverse into AC energy, at <5ms in the time, through KM2 A.C. contactor, export to the emergent output bus of AC220V, now, the power supply that user load is used is the AC power of the NB power inverting module converts controlled by DPS controller, rather than from civil power.
When line voltage recovers normal work, after the control system of DPS controller detection civil power is normal, by synchronous grid-connected handoff technique, closed KM1 A.C. contactor, realizes from inversion power supply and forwards mains-supplied to, and now, NB power inverting module enters resting state.After this, DPS controller is powered through KM1 A.C. contactor civil power to the emergent output bus (load) of AC220V.
Above content is only to structure example of the present invention and explanation; affiliated those skilled in the art make various modifications to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the structure of invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (3)
1. with an emergency power supply unit for independent safe voltage, it is characterized in that: this device includes LKC charger module, DN power storaging unit, NB power inverting module, DY switch power module, QH handover module and dsp controller, wherein,
Civil power is connected with the input of the KM1 A.C. contactor of QH handover module by QFA circuit breaker;
The input of LKC charger module is connected on the circuit between QFA circuit breaker and the input of KM1 A.C. contactor by QFC circuit breaker, and the output of LKC charger module is connected with the input of DN power storaging unit by QFD circuit breaker;
The output of DN power storaging unit is connected with the input of NB power inverting module, the output of NB power inverting module connects by the input of the KM2 A.C. contactor of QH handover module, and the output of KM1 A.C. contactor, KM2 A.C. contactor is all connected with the emergent output bus of AC220V;
The input of DY switch power module respectively be connected the QFB circuit breaker of civil power, the output of DN power storaging unit connects, the output of DY switch power module is connected with DC24V safe voltage output bus;
Dsp controller is connected with LKC charger module, NB power inverting module, DY switch power module, QH handover module respectively.
2. a method of work for the emergency power supply unit with independent safe voltage according to claim 1, is characterized in that: include DC24V safe voltage output bus method of supplying power to, be specially:
When civil power is normal, closed QFB circuit breaker, through the AC220V/DC220V of DY switch power module rectification circuit and DC220V/DC24V chopper circuit, output DC24V safe voltage;
During city electrical anomaly, the output of DN power storaging unit DC220V directly give the power supply of DY switch power module, through the DC220V/DC24V of DY switch power module chopper circuit, and output DC24V safe voltage.
3. a method of work for the emergency power supply unit with independent safe voltage according to claim 1, is characterized in that: include the emergent output bus method of supplying power to of AC220V, be specially:
When civil power is normal, civil power is directly powered to the emergent output bus of AC220V through QFA circuit breaker and KM1 A.C. contactor; Civil power is powered to LKC charger module by QFC circuit breaker, and LKC charger module is charged to DN power storaging unit by QFD circuit breaker;
When mains-supplied is interrupted or line voltage transfinites, disconnect immediately KM1 A.C. contactor, operation NB power inverting module, the direct current energy of DN power storaging unit is reverse into AC energy, at <5ms, in the time, through KM2 A.C. contactor, export to the emergent output bus of AC220V;
When city power recovery is normal, after the control system of DPS controller detection civil power is normal, by synchronous grid-connected handoff technique, closed KM1 A.C. contactor, powers through KM1 A.C. contactor civil power to the emergent output bus of AC220V.
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| CN201310410978.0A CN103683442A (en) | 2013-09-11 | 2013-09-11 | An emergency power supply device with an independent safe voltage and a working method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106208346A (en) * | 2016-07-20 | 2016-12-07 | 合肥联信电源有限公司 | A kind of isolated emergency power system |
| CN106230097A (en) * | 2016-07-19 | 2016-12-14 | 合肥联信电源有限公司 | Emergency power system concentrated by a kind of safe voltage type |
| CN106255281A (en) * | 2016-08-01 | 2016-12-21 | 合肥联信电源有限公司 | A kind of electric power system of DC lighting light fixture |
| CN106571670A (en) * | 2016-06-07 | 2017-04-19 | 四川阿海珐电气有限公司 | Emergency power supply specially used for fire emergency light |
| CN109787349A (en) * | 2019-03-01 | 2019-05-21 | 普联技术有限公司 | A kind of UPS circuit, power circuit and electronic equipment |
| CN111251931A (en) * | 2020-03-25 | 2020-06-09 | 唐山尚新融大电子产品有限公司 | High-safety electric automobile charging and discharging device |
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| CN201789329U (en) * | 2010-07-22 | 2011-04-06 | 郑献东 | Uninterruptable AC and DC power supply system |
| CN203491773U (en) * | 2013-09-11 | 2014-03-19 | 合肥联信电源有限公司 | Emergency power supply device with independent safety voltage |
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| CN201328021Y (en) * | 2008-08-14 | 2009-10-14 | 青岛经济技术开发区创统科技发展有限公司 | AC/DC synthesized integrated screen |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106571670A (en) * | 2016-06-07 | 2017-04-19 | 四川阿海珐电气有限公司 | Emergency power supply specially used for fire emergency light |
| CN106571670B (en) * | 2016-06-07 | 2020-03-06 | 四川阿海珐电气有限公司 | Special emergency power supply for fire-fighting emergency lamp |
| CN106230097A (en) * | 2016-07-19 | 2016-12-14 | 合肥联信电源有限公司 | Emergency power system concentrated by a kind of safe voltage type |
| CN106208346A (en) * | 2016-07-20 | 2016-12-07 | 合肥联信电源有限公司 | A kind of isolated emergency power system |
| CN106255281A (en) * | 2016-08-01 | 2016-12-21 | 合肥联信电源有限公司 | A kind of electric power system of DC lighting light fixture |
| CN106255281B (en) * | 2016-08-01 | 2018-10-26 | 合肥联信电源有限公司 | A kind of power supply system of DC lighting lamps and lanterns |
| CN109787349A (en) * | 2019-03-01 | 2019-05-21 | 普联技术有限公司 | A kind of UPS circuit, power circuit and electronic equipment |
| CN111251931A (en) * | 2020-03-25 | 2020-06-09 | 唐山尚新融大电子产品有限公司 | High-safety electric automobile charging and discharging device |
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