CN108599602A - A kind of distributed power supply system and control method based on magnetic switch control - Google Patents
A kind of distributed power supply system and control method based on magnetic switch control Download PDFInfo
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- CN108599602A CN108599602A CN201810750540.XA CN201810750540A CN108599602A CN 108599602 A CN108599602 A CN 108599602A CN 201810750540 A CN201810750540 A CN 201810750540A CN 108599602 A CN108599602 A CN 108599602A
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- 238000004804 winding Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- 229910002070 thin film alloy Inorganic materials 0.000 claims description 4
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- 230000005540 biological transmission Effects 0.000 abstract description 9
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/23—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only arranged for operation in parallel
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
Abstract
The invention belongs to LED display module drive technical field, discloses a kind of distributed power supply system controlled based on magnetic switch and control method, system include：Centralized AC/AC power supplys form ac bus, are wired in each distributed generation resource AC/DC for 50Hz alternating currents to be become the required AC power of system；Distributed generation resource AC/DC, hangs on ac bus, for generating the required low-voltage DC of LED display module.The present invention realizes that distribution accurately controls using magnetic switch technology, and control is simple, cheap；It is easy for installation；Distributed generation resource AC/DC can directly inlay together with display panel module, save low-voltage, high-current transmission line；It is easy for installation, saving of work and time；Ac bus voltage is high, electric current is small, line footpath is small, few with material；Reliability is high, and distributed generation resource takes magnetic switch mode, the reliability of magnetic switch and service life to be far above electronic switch.
Description
Technical field
The invention belongs to LED display module drive technical field more particularly to a kind of distributions based on magnetic switch control
Formula power-supply system and control method.
Background technology
Currently, the prior art commonly used in the trade is such：
With the integrated application of multiple-energy-source, and distributed electrical equipment is widely used, for example, wind-light-bavin synthesis
The characteristics of power station, distribution charging device, high-power LED display screen module drive power-supply system etc., these power-supply systems is：
Electric energy is transmitted to each user by centralized busbar, and each user carries out AC/DC or DC/DC transformation again as needed.It is the most frequently used
Centralized busbar have industrial frequency AC (50Hz) form and DC bus transmission mode.
For example, multiple-energy-source DC bus common at present passes energy and mapping mode, a variety of electric energy are passed through AC/DC by it
Or DC/DC converters are transformed to the direct current of unified voltage magnitude, are transferred to each user terminal.User passes through again according to load characteristic
Distributed converters change swaps out AC or DC electricity for load application.
(1) for 50Hz ac transmission systems, distributed generation resource needs transformer drop (liter) pressure, AC/DC, DC/AC, AC/DC
Equal transform parts, or by multiple transform parts such as AC/DC, DC/DC, high frequency transformer, AC/DC, realize with power grid every
From meeting load requirement；
(2) for DC transmission system, distributed generation resource needs：The transform parts such as DC/AC, high frequency transformer, AC/DC,
Realize that related isolation meets load requirement.
(3) each distributed generation resource institute bringing onto load property, power are variations, so necessary having electronic regulating device,
Realize that power or voltage are adjusted.
It integrates, present distributed power supply system, it is complicated, of high cost, control parameter adjustment difficulty is big；Together
When need to use more electrolytic capacitor, influence the service life of whole system.
Solve the difficulty and meaning of above-mentioned technical problem：
Solve the problems, such as that above-mentioned technical problem is：
(1) existing electric energy transmission mode must be broken through, for example high frequency AC-bus can be taken to transmit；
(2) waveform of its AC power palpus Symmetrical in existing ac bus transmission mode, reduction pair must be broken through
The requirement of centrally connected power source converter；
(3) transform part for reducing distributed generation resource, cancels electronic regulating unit；
(4) detection and holding of the output short circuit protection of magnetic switch adjuster.
The meaning to solve the above problems is：
(1) requirement of energy transmission busbar is reduced.For example the waveform requirements to ac bus, symmetry, meaning exist
In：Centrally connected power source can be sinewave inverter, square wave transducer, symmetrical bipolar converter and single-end ortho-exciting, flyback change
Parallel operation, it is high, convenient that converter develops flexibility.
(2) distributed generation resource transform part is few, simple in structure, at low cost；
(3) cancel electronic controller device, system reliability is high；
(4) system wiring is simple, saving of labor, time saving；
(5) easy to maintain, maintenanceability is good.
Invention content
In view of the problems of the existing technology, the present invention provides a kind of distributed generation resource systems based on magnetic switch control
System and control method.
The invention is realized in this way a kind of distributed power supply system based on magnetic switch control, including：
Centralized AC/AC power supplys form ac bus for 50Hz alternating currents to be become the required AC power of system,
It is wired in each distributed generation resource AC/DC；
Distributed generation resource AC/DC, hangs on ac bus, for generating the required low-voltage direct of LED display module
Electricity；
Further, each distributed generation resource AC/DC is integrated with magnetic switch device, is used for output voltage control, meets different
The characteristic requirements of load；
Each distributed generation resource AC/DC is integrated with no electrolytic capacitor.
Further, centralized AC/AC power supplys are non-isolated；
Distributed generation resource AC/DC takes resonant type soft-switch technology, reduces the influence to LED display module；
The leading indicators such as distributed generation resource AC/DC input power factors, current harmonics meet relevant criterion requirement.
Distributed generation resource AC/DC uses Magnetic isolation converter；
The AC/DC rectification circuits of distributed generation resource AC/DC take synchronous rectification；
Distributed generation resource AC/DC adjusts output voltage by magnetic switch mode；
Magnetic switch device takes self-saturation control mode；
Magnetic core selection Amorphous Cores, thin film alloys, the ferrite of magnetic switch device,He＜ 0.10e.
Further, magnetic switch device adjusts turn on delay time by the error amplifier in controller, to output voltage
VoAdjusting；V1、VD2Half circuit of synchronous rectification is formed, forward current takes synchronous rectification, freewheel current to take diode side
Formula.
It being integrated with the distributed power supply system controlled based on magnetic switch another object of the present invention is to provide a kind of
Included protection circuit device, the included protection circuit device is integrated with the distributed power supply system controlled based on magnetic switch；
Distributed power supply system based on magnetic switch control connects NBShort-circuit protection winding；Vo2Short-circuit protection it is additional every
It is sequentially connected by wire N from diodeBShort-circuit protection winding；Vo1The additional isolating diode of short-circuit protection is connected by conducting wire
Meet Vo2The additional isolating diode of short-circuit protection, and pass through conducting wire and the distributed power supply system based on magnetic switch control simultaneously
Connection.
It being integrated with the distributed generation resource system controlled based on magnetic switch another object of the present invention is to provide a kind of
The bus distributed generation resource charging pile of system.
It being integrated with the distributed generation resource system controlled based on magnetic switch another object of the present invention is to provide a kind of
The Public place of system shares bicycle distribution charger.
Another object of the present invention is to provide a kind of control methods of the distributed power supply system based on magnetic switch control
Including：
The electrical isolation of power supply and user are realized by the high frequency transformer in distributed power supply module, improve the peace of system
Quan Xing；
Each distributed power supply module carries switching regulaor, meets the characteristic requirements of different loads；Its power regulation is
It is realized by magnetic switch, the magnetic induction that it adjusts the magnetic core in magnetic switch device by the error current that feedback circuit exports is strong
The value of Δ B is spent, Delayed conducting time, control output energy are adjusted.
Another object of the present invention is to provide the distributed power supply systems based on magnetic switch control described in a kind of operation
The controller of control method.
Another object of the present invention is to provide a kind of shared automobile distribution power source charges for carrying the controller
Stake.
In conclusion advantages of the present invention and good effect are：
Centralization busbar power supply of the invention only proposes that alternating voltage or alternating current, waveform can be square waves, can also
It is sine wave, can also be any other waveform；It reduces the research difficulty of centrally connected power source and develops flexibility, such as medium and small work(
The centrally connected power source of rate takes single end flyback converter, and topological structure is simple, and required component is few, of low cost.
The electrical isolation of power supply and user are realized by distributed power supply module, improve the safety of system；
Each distributed power supply module carries switching regulaor, meets the characteristic requirements of different loads；
Distributed power supply module of the present invention has no electrolytic capacitor, and distributed electrical source service life is increased to and LED display screens
The same order of magnitude.
Advantages of the present invention also has：
Invention has the advantages of high efficiency.Traditional centralized power AC/DC, efficiency are not more than 85%；Efficiency of the present invention up to 93% with
On；
Realize that distribution accurately controls using magnetic switch technology, control is simple, cheap；
It is easy for installation.Distributed generation resource AC/DC can directly inlay together with display panel module, save low-voltage, high-current
Transmission line；
Save wire rod.Ac bus voltage is high, electric current is small, line footpath is small, few with material；
Reliability is high.Distributed generation resource takes magnetic switch mode, the reliability of magnetic switch and service life to be far above electronic cutting
It closes；
It safeguards simple.Centralized power AC/AC can be placed on the position being conveniently replaceable, and facility is replaced in repair；
Cooling requirements are low.Centralized formula power supply can be radiated by display screen component, not need special heat dissipation equipment；
Machine system is cheap.
Description of the drawings
Fig. 1 is the distributed power supply system schematic diagram provided in an embodiment of the present invention controlled based on magnetic switch.
In figure：1, centralization AC/AC power supplys；2, ac bus；3, distributed generation resource AC/DC；4, LED display panel modules.
Fig. 2 is distributed electrical source circuit provided in an embodiment of the present invention.
In figure：(a), distributed electrical source circuit when distributed generation resource AC/DC is unipolarity converter；(b), distributed
Distribution power circuit when power supply AC/DC is bipolarity converter.
Fig. 3 is included protection circuit device figure provided in an embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to this hair
It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
In the prior art, busbar power supply wave shape cannot use random waveform；The safety of system is poor；Difference cannot be met
The characteristic requirements of load；Without no electrolytic capacitor.
Fig. 1, the distributed power supply system provided in an embodiment of the present invention based on magnetic switch control, including：
Centralized AC/AC power supplys 1 form ac bus for 50Hz alternating currents to be become the required AC power of system
2, it is wired in each distributed generation resource AC/DC；
Distributed generation resource AC/DC3, hangs on ac bus, for generating 4 required low-pressure direct of LED display module
Galvanic electricity；
Each distributed generation resource AC/DC is integrated with magnetic switch device, is used for output voltage control, meets different loads
Characteristic requirements；
Each distributed generation resource AC/DC is integrated with no electrolytic capacitor.
Centralized AC/AC power supplys are non-isolated；
Distributed generation resource AC/DC takes resonant type soft-switch technology, reduces the influence to LED display module；
The leading indicators such as distributed generation resource AC/DC input power factors, current harmonics meet relevant criterion requirement.
Distributed generation resource AC/DC uses Magnetic isolation converter；
The AC/DC rectification circuits of distributed generation resource AC/DC take synchronous rectification；
Distributed generation resource AC/DC adjusts output voltage by magnetic switch mode；
Magnetic switch device takes self-saturation control mode；
Magnetic core selection Amorphous Cores, thin film alloys, the ferrite of magnetic switch device,He＜ 0.10e.
Such as Fig. 2, magnetic switch device adjusts turn on delay time by the error amplifier in controller, to output voltage
VoAdjusting；V1、VD2Half circuit of synchronous rectification is formed, forward current takes synchronous rectification, freewheel current to take diode side
Formula.
Such as Fig. 3, it is provided in an embodiment of the present invention be integrated with distributed power supply system control based on magnetic switch oneself
Band protection circuit device, the included protection circuit device are integrated with the distributed power supply system controlled based on magnetic switch；
Distributed power supply system based on magnetic switch control connects NBShort-circuit protection winding；Vo2Short-circuit protection it is additional every
It is sequentially connected by wire N from diodeBShort-circuit protection winding；Vo1The additional isolating diode of short-circuit protection is connected by conducting wire
Meet Vo2The additional isolating diode of short-circuit protection, and pass through conducting wire and the distributed power supply system based on magnetic switch control simultaneously
Connection.
With reference to specific embodiment, the invention will be further described.
Distributed power supply system provided in an embodiment of the present invention based on magnetic switch control,
50Hz alternating currents are become the required AC power of system by centralized AC/AC power supplys, are formed ac bus, are passed through
Conducting wire is connected to each distributed generation resource, and feature is：Power is big, and output voltage is high, and extraction wire sectional area is small；
And the distributed generation resource AC/DC on ac bus is hung over, generate the required low-voltage direct of LED display module
Electricity；
To realize that the output voltage of single distributed generation resource AC/DC accurately controls, each distributed generation resource set by interior
Magnetic switch device realize output voltage control.Distributed generation resource AC/DC principles are shown in Fig. 2.
The connecting mode of the present invention：220V/50Hz electric currents couple the input terminal of AC/AC, and the output end connection of AC/AC is handed over
Busbar is flowed, distributed generation resource AC/DC input terminals are connected with ac bus, and distributed generation resource AC/DC exports low-voltage direct, directly
It connects and couples with LED display module, driving LED display module work.
Wherein, centralized AC/AC power supplys are non-isolated；
AC/AC converters take resonant type soft-switch technology, and electromagnetic interference is small, reduce the influence to LED display module；
The leading indicators such as AC/AC converters input power factor, current harmonics meet relevant criterion requirement.
Distributed generation resource AC/DC uses Magnetic isolation converter；
The AC/DC rectification circuits of distributed generation resource AC/DC take synchronous rectification；
Distributed generation resource AC/DC adjusts output voltage by magnetic switch mode.
Magnetic switch device takes self-saturation control mode；
Magnetic core selection Amorphous Cores, thin film alloys, the ferrite of magnetic switch device,He＜ 0.10e.
With reference to operation principle, the invention will be further described.
In Fig. 1, the AC energy that centralized AC/AC power supplys 1 transmit is become into the required low-voltage direct of display screen
Electricity (generally 5V).Centralized 1 output power of AC/AC power supplys is 1KW；According to monomer display screen power, distributed generation resource AC/
2 output powers of DC are 20W~80W；Each centralization AC/AC power supplys 1 can and hang 18~25 distributed generation resource AC/DC 2.
Fig. 2 is distributed generation resource circuit diagram provided in an embodiment of the present invention.In figure：(a), distributed generation resource AC/DC is single
Distributed electrical source circuit when polarity converter；(b), distributed generation resource electricity when distributed generation resource AC/DC is bipolarity converter
Road.T1、T2For high-frequency isolation transformer, high frequency/high-voltage electricity that distributed generation resource AC/DC is transmitted is become high frequency/low by it
Voltage source.
In Fig. 2 (a), L1For magnetic switch device, it adjusts turn on delay time by error amplifier (in modules A), real
Now to output voltage VoAdjusting.V1、VD2Half circuit of synchronous rectification is formed, i.e. forward current takes synchronous rectification, freewheel current
Diode fashion is taken, increases power consumption to there is circulating current when preventing output from stopping.Modules A device in order to control, is a kind of band
From the pi regulator and amplifying circuit of voltage stabilizing.
In Fig. 2 (b), L1、L2For the magnetic switch device of positive negative pulse stuffing；V1、V2It is managed for synchronous rectification MOS, VDoIndividually to set
The fly-wheel diode set.Module B is the controller similar with modules A.
Fig. 3 is the system diagram of band protection circuit provided in an embodiment of the present invention, is the AC/DC module frames in Fig. 2 in box
Figure；NBIt is short-circuit protection winding；Vo1、Vo2It is the additional isolating diode of short-circuit protection.
The control method of distributed power supply system provided in an embodiment of the present invention based on magnetic switch control includes：
The electrical isolation of power supply and user are realized by distributed power supply module, improve the safety of system；
Each distributed power supply module carries switching regulaor, meets the characteristic requirements of different loads.
With reference to specific embodiment, the invention will be further described.
It is provided in an embodiment of the present invention based on magnetic switch adjust centralization-distribution type LED display panel module be electrically
System, including centralized ac bus, distributed generation resource AC/DC, distribution type LED display panel module.
Centralized ac bus is equipped with L, N, G input terminal, and L, N-terminal are connected with power grid alternating current, and G is protection ground terminal；Output
End is connected with high frequency output line；The input terminal of low-tension supply module simultaneously hangs over ac bus both ends, and output end is straight by plug
It connects and is connected with display screen.
Centralized power AC/AC can be set with several distributed generation resources AC/DC according to the watt level of display screen
Set multiple centralized power AC/AC, several distributed generation resources of each centralized power AC/AC free bands AC/DC.
Single centralized power AC/AC input/output connecting line areas are less than 1mm2, output line be suitble to more be isolated
Filament exports.
Distributed generation resource AC/DC is electromagnetic isolation mode, power and the LED display screen moulds of single distributed generation resource AC/DC
Voltage, the power of block match.
Distributed generation resource AC/DC requires independent voltage stabilizing control, before centralized power AC/AC has input supply voltage
Feedback control does not have feedback regulation and controls.
Distributed generation resource AC/DC distribution AC/DC modules are regulated and controled based on magnetic switch, and magnetic switch device is self-saturation
Control mode.
Distributed generation resource AC/DC takes half circuit of synchronous rectification, i.e., before to rectification circuit be power MOS rectifications, diode
Afterflow improves rectification efficiency, and prevent filter inductance stop after reverse direction current flow and bring additional loss.
When distributed generation resource AC/DC exports bipolar pulse (bipolarity converter), distributed generation resource AC/DC takes
Fig. 2 circuits, full-wave rectification is synchronous rectification mode, while separately adding fly-wheel diode VDo, magnetic switch control is made to be more prone to.
Magnetic switch control circuit need to add output short circuit protective device, and protective device is shown in Fig. 3.
The LED display modular electrical drive system does not need special heat dissipation equipment.
It can be used for the other systems of other ac bus transmission based on the distributed generation resource that magnetic switch is adjusted, it is such as distributed
Charger.
Certain 10kwLED display system takes conventional ADS driving mode and takes this system type of drive comparison See tables 1.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of distributed power supply system based on magnetic switch control, which is characterized in that the distribution based on magnetic switch control
Formula power-supply system includes：
Centralized AC/AC power supplys form ac bus, pass through for 50Hz alternating currents to be become the required AC power of system
Conducting wire is connected in each distributed generation resource AC/DC；
Distributed generation resource AC/DC, hangs on ac bus, for generating the required low-voltage DC of LED display module.
2. the distributed power supply system as described in claim 1 based on magnetic switch control, which is characterized in that
Each distributed generation resource AC/DC is integrated with magnetic switch device, is used for output voltage control, and the characteristic for meeting different loads is wanted
It asks；
Each distributed generation resource AC/DC no electrolytic capacitors.
3. the distributed power supply system as described in claim 1 based on magnetic switch control, which is characterized in that
Centralized AC/AC power supplys are non-isolated；
Distributed generation resource AC/AC takes resonant type soft-switch technology, controls LED display module；
Distributed generation resource AC/DC uses Magnetic isolation converter；
The AC/DC rectification circuits of distributed generation resource AC/DC take half synchronous rectification；
Distributed generation resource AC/DC adjusts output voltage by magnetic switch mode；
Magnetic switch device takes self-saturation control mode；
Magnetic core selection Amorphous Cores, thin film alloys, the ferrite of magnetic switch device,Hc＜ 0.10e.
4. the distributed power supply system as claimed in claim 3 based on magnetic switch control, which is characterized in that
Magnetic switch device adjusts turn on delay time by the error amplifier in controller, to output voltage VoAdjusting；V1、
VD2Half circuit of synchronous rectification is formed, forward current takes synchronous rectification, freewheel current to take diode fashion.
5. a kind of included protection circuit dress being integrated with the distributed power supply system controlled based on magnetic switch described in claim 1
It sets, which is characterized in that the included protection circuit device is integrated with the distributed power supply system controlled based on magnetic switch；
Distributed power supply system based on magnetic switch control connects NBShort-circuit protection winding；Vo2Two poles of the additional isolation of short-circuit protection
Pipe is sequentially connected by wire NBShort-circuit protection winding；Vo1The additional isolating diode of short-circuit protection connects V by conducting wireo2Short circuit
Additional isolating diode is protected, and is connect simultaneously with the distributed power supply system controlled based on magnetic switch by conducting wire.
6. a kind of bus distributed electrical being integrated with the distributed power supply system described in claim 1 controlled based on magnetic switch
Source charging pile.
7. a kind of Public place being integrated with the distributed power supply system described in claim 1 controlled based on magnetic switch is total
Enjoy bicycle distribution charger.
8. a kind of control method using the distributed power supply system described in claim 1 based on magnetic switch control, feature
It is, the control method of the distributed power supply system based on magnetic switch control includes：
The electrical isolation of power supply and user realized by distributed power supply module, the safety for improving system；
Each distributed power supply module carries switching regulaor, the characteristic requirements for meeting different loads.
9. the controller of the control method of the distributed power supply system based on magnetic switch control described in a kind of operation claim 8.
10. a kind of shared automobile distribution power source charges stake for carrying controller described in claim 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109614036A (en) * | 2018-11-16 | 2019-04-12 | 新华三技术有限公司成都分公司 | The dispositions method and device of memory space |
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- 2018-07-10 CN CN201810750540.XA patent/CN108599602A/en active Pending
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| JPH01131289U (en) * | 1988-03-03 | 1989-09-06 | ||
| US20020181253A1 (en) * | 2001-05-30 | 2002-12-05 | Kiyohiko Watanabe | Multi-output switching power source circuit |
| CN204010627U (en) * | 2014-06-04 | 2014-12-10 | 天一宏业武汉科技发展有限公司 | The LED display system of distributed power source power supply |
| CN208782738U (en) * | 2018-07-10 | 2019-04-23 | 宋庆国 | It is a kind of based on magnetic switch control distributed electrical source device, charging pile, charger, protection circuit device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109614036A (en) * | 2018-11-16 | 2019-04-12 | 新华三技术有限公司成都分公司 | The dispositions method and device of memory space |
| CN109614036B (en) * | 2018-11-16 | 2022-05-10 | 新华三技术有限公司成都分公司 | Storage space deployment method and device |
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