CN105162125A - Alternating/direct current power supply device and uninterruptible power supply system - Google Patents

Alternating/direct current power supply device and uninterruptible power supply system Download PDF

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Publication number
CN105162125A
CN105162125A CN201510707260.7A CN201510707260A CN105162125A CN 105162125 A CN105162125 A CN 105162125A CN 201510707260 A CN201510707260 A CN 201510707260A CN 105162125 A CN105162125 A CN 105162125A
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switch
power supply
load
power
closed
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CN105162125B (en
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黄民民
贾锋泽
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Beijing Baidu Netcom Science and Technology Co Ltd
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Beijing Baidu Netcom Science and Technology Co Ltd
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Abstract

The invention discloses an alternating/direct current power supply device and an uninterruptible power supply system. According to a specific embodiment, the alternating/direct current power supply device comprises an alternating/direct current conversion circuit for achieving mutual conversion between alternating current and direct current, an alternating-current power supply circuit for supplying power for an alternating-current load through an alternating-current power supply and converting alternating current output by the alternating-current power supply into direct current through the alternating/direct current conversion circuit, a direct current power supply circuit for charging a direct-current power supply with the direct current obtained through conversion of the alternating/direct current conversion circuit and supplying power for a direct-current load when power supply of the alternating-current power supply is normal and supplying power for the direct-current load through the direct-current power supply, converting the direct current output by the direct-current power supply into alternating current through the alternating/direct current conversion circuit and supplying power for the alternating-current load when power supply of the alternating-current power supply is abnormal. The power supply reliability is improved by adopting the alternating/direct current power supply device.

Description

Ac/dc electric supply installation and uninterruptible power system
Technical field
The application relates to power supply technique field, is specifically related to uninterrupted power supply technical field, particularly relates to ac/dc electric supply installation and uninterruptible power system.
Background technology
In present stage data center's power supply-distribution system, important IT (InformationTechnology, information technology) server generally all adopts duplicate supply, this for two-way power supply simultaneously construction for electricity provide hardware foundation.In order to ensure the stability of system, electric power system generally adopts " two-way UPS (UninterruptiblePowerSystem; uninterrupted power supply)/HVDC (High-VoltageDirectCurrent, high voltage direct current) " or the powering mode of " civil power+UPS/HVDC ".
" two-way UPS/HVDC ", although system reliability is high, power-supply device configuration capacity is large, and initial investment cost is high, and most of time is a road " UPS/HVDC " work, so running efficiency of system is lower.The mode of " civil power+UPS/HVDC " saves the initial investment of a road " UPS/HVDC ", running efficiency of system is compared to 2N (under 2N is exactly 2 different transmission lines, N platform UPS is composed in parallel a system by every bar transmission line respectively, N platform UPS respectively exports (100/N) %) be doubled, but system reliability also declines thereupon.Electric power system only has circuit to back up, if power system failure, IT server will be supplied by single channel civil power, and risk is uncontrollable.
Summary of the invention
This application provides ac/dc electric supply installation and uninterruptible power system, to solve the technical problem mentioned in background technology.
On the one hand, this application provides a kind of ac/dc electric supply installation, described device comprises:
Ac/dc conversion line, for realizing the mutual conversion between direct current and alternating current;
Ac power supply line, is connected with AC power and described ac/dc conversion line, for being that AC load is powered by described AC power, and by described ac/dc conversion line, the alternating current that described AC power exports is converted to direct current;
Direct current supply line, be connected with DC power supply, for when described ac power supply is normal, by the direct current be converted to by described ac/dc conversion line be described DC power supply charging, and power for DC load, when described ac power supply is abnormal, be that described DC load is powered by described DC power supply, and by described ac/dc conversion line, the direct current that described DC power supply exports to be converted to alternating current be that described AC load is powered.
In certain embodiments, described ac power supply line comprises:
Static switch, for connecting AC power and AC load, closed when ac power supply is normal, disconnect when ac power supply is abnormal;
First switch, the first end of described first switch is connected with described AC power, and the second end of described first switch is connected with the first end of described static switch, for being switched on or switched off the electric current flowing through described static switch;
Second switch, the first end of described second switch is connected with the second end of described static switch, and the second end of described second switch is connected with described AC load, for being switched on or switched off the alternating current of powering to described AC load.
In certain embodiments, described direct current supply line comprises:
3rd switch, the first end of described 3rd switch is connected with described DC power supply, for being switched on or switched off described DC power supply;
4th switch, the first end of described 4th switch is connected with the second end of described 3rd switch, and the second end of described 4th switch is connected with described DC load, for being switched on or switched off the direct current of powering to described DC load.
In certain embodiments, described ac/dc conversion line comprises:
Ac/dc reversible transducer, the interchange end of described ac/dc reversible transducer is connected with the second end of described static switch, the DC terminal of described ac/dc reversible transducer is connected with the second end of described 3rd switch, for alternating current is converted to direct current, or direct current is converted to alternating current.
In certain embodiments, described device also comprises:
Power supply state monitor, described power supply state monitor is connected with described AC power, for monitoring the power supply state of described AC power.
In certain embodiments, described device also comprises:
On-off controller, be connected with described power supply state monitor, the first switch, second switch, the 3rd switch, the 4th switch and static switch respectively, for controlling the operating state of described first switch, second switch, the 3rd switch, the 4th switch and static switch according to the power supply state of described AC power.
In certain embodiments, described on-off controller comprises:
Rectification mode controller, for when ac power supply is normal, closed described first switch, closed described static switch, closed described second switch, closed described 3rd switch and closed described 4th switch respectively;
Protection powering mode controller, for when ac power supply is abnormal, disconnects described first switch, closed described second switch, closed described 3rd switch and closed described 4th switch respectively.
In certain embodiments, described on-off controller also comprises:
Checking discharge mode controller, for when ac power supply is normal, closed described first switch, closed described static switch, closed described second switch, closed described 3rd switch and closed described 4th switch respectively.
In certain embodiments, described device also comprises:
Maintenance circuit, the first end of described maintenance circuit is connected with described AC power, and the second end of described maintenance circuit is connected with described AC load, for isolating described ac/dc conversion line, ac power supply line and direct current supply line.
In certain embodiments, described maintenance circuit comprises the 5th switch, and the first end of described 5th switch is connected with described AC power, and the second end of described 5th switch is connected with described AC load.
Second aspect, this application provides a kind of uninterruptible power system, and described system comprises above-mentioned ac/dc electric supply installation.
In certain embodiments, two described ac/dc electric supply installations form uninterrupted power supply unit, single described uninterrupted power supply unit is two groups of load supplyings, often organize described load and comprise AC load and DC load, the AC load that each described ac/dc electric supply installation connects and DC load do not belong to load described in same group.
The ac/dc electric supply installation that the application provides and uninterruptible power system, when ac power supply is normal, be that AC load is powered by ac power supply line, and by ac/dc conversion line, the alternating current that AC power exports is converted to direct current, by direct current be respectively DC power supply charging and DC load power; When ac power supply is abnormal, direct current supply line is that DC load is powered by DC power supply, and by ac/dc conversion line, the direct current that DC power supply exports to be converted to alternating current be that AC load is powered, and improves power supply reliability.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, the other features, objects and advantages of the application will become more obvious:
Fig. 1 is the structural representation of an embodiment of ac/dc electric supply installation according to the application;
Fig. 2 is the structure chart of ac/dc electric supply installation under rectification mode according to the application;
Fig. 3 is the structure chart of ac/dc electric supply installation under load protection pattern according to the application;
Fig. 4 is the structure chart of ac/dc electric supply installation under checking discharge mode according to the application;
Fig. 5 is the structure chart of ac/dc electric supply installation under maintenance model according to the application;
Fig. 6 is the structure chart of the uninterruptible power system according to the application.
Embodiment
Below in conjunction with drawings and Examples, the application is described in further detail.Be understandable that, specific embodiment described herein is only for explaining related invention, but not the restriction to this invention.It also should be noted that, for convenience of description, in accompanying drawing, illustrate only the part relevant to Invention.
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the application in detail in conjunction with the embodiments.
Fig. 1 shows the structural representation of an embodiment of the ac/dc electric supply installation 100 of the application.The ac/dc electric supply installation 100 of the present embodiment comprises: ac/dc conversion line 101, ac power supply line 102 and direct current supply line 103.Wherein, ac/dc conversion line 101 is for realizing the mutual conversion between direct current and alternating current; Ac power supply line 102 is connected with AC power and described ac/dc conversion line 101, for being that AC load is powered by above-mentioned AC power, and by above-mentioned ac/dc conversion line 101, the alternating current that above-mentioned AC power exports is converted to direct current; Direct current supply line 103 is connected with DC power supply, for when above-mentioned ac power supply is normal, by the direct current be converted to by above-mentioned ac/dc conversion line 101 be above-mentioned DC power supply charging, and power for DC load, when above-mentioned ac power supply is abnormal, be that above-mentioned DC load is powered by above-mentioned DC power supply, and by above-mentioned ac/dc conversion line 101, the direct current that above-mentioned DC power supply exports to be converted to alternating current be that above-mentioned AC load is powered.
The ac/dc electric supply installation 100 that the application provides, when ac power supply is normal, by ac power supply line 102 for AC load is powered, and by ac/dc conversion line 101, the alternating current that AC power exports is converted to direct current, by direct current be respectively DC power supply charging and DC load power; When ac power supply is abnormal, direct current supply line 103 is that DC load is powered by DC power supply, and by ac/dc conversion line 101, the direct current that DC power supply exports to be converted to alternating current be that AC load is powered, and improves power supply reliability.
Show the structure chart of ac/dc electric supply installation under rectification mode of the application with further reference to Fig. 2, Fig. 2, below by way of Fig. 2, the part of ac/dc electric supply installation 100 is described.As shown in Figure 2, ac power supply line 102 also comprises static switch 1021, first switch 1022 and second switch 1023.Wherein, static switch 1021 is for connecting AC power and AC load, closed when ac power supply is normal, disconnects when ac power supply is abnormal; Static switch has fast response characteristic, can disconnect in time, avoid causing damage to electricity consumption device when ac power supply is abnormal, and DC inverter be alternating current power to AC load time, avoid alternating current to feed back to AC power; Can also close in time when AC power restores electricity normal; The first end of above-mentioned first switch 1022 is connected with above-mentioned AC power; Second end of above-mentioned first switch 1022 is connected with the first end of above-mentioned static switch 1021, for being switched on or switched off the electric current flowing through above-mentioned static switch; The first end of above-mentioned second switch 1023 is connected with the second end of above-mentioned static switch 1021, and the second end of above-mentioned second switch 1023 is connected with above-mentioned AC load, for being switched on or switched off the alternating current of powering to above-mentioned AC load.
In some optional implementations of the present embodiment, above-mentioned direct current supply line 103 comprises the 3rd switch 1031 and the 4th switch 1032.Wherein, the first end of above-mentioned 3rd switch 1031 is connected with above-mentioned DC power supply, for being switched on or switched off above-mentioned DC power supply; The first end of above-mentioned 4th switch 1032 is connected with the second end of above-mentioned 3rd switch 1031, and the second end of above-mentioned 4th switch 1032 is connected with above-mentioned DC load, for being switched on or switched off the direct current of powering to above-mentioned DC load.
In some optional implementations of the present embodiment, above-mentioned ac/dc conversion line 101 comprises ac/dc reversible transducer 1011, the interchange end of above-mentioned ac/dc reversible transducer 1011 is connected with the second end of above-mentioned static switch 1021, the DC terminal of above-mentioned ac/dc reversible transducer 1011 is connected with the second end of above-mentioned 3rd switch 1031, for alternating current is converted to direct current, or direct current is converted to alternating current.
In some optional implementations of the present embodiment, ac/dc electric supply installation 100 can also comprise power supply state monitor (not shown), above-mentioned power supply state monitor is connected with above-mentioned AC power, for monitoring the power supply state of above-mentioned AC power.
In some optional implementations of the present embodiment, ac/dc electric supply installation 100 can also comprise on-off controller (not shown), on-off controller is connected with above-mentioned power supply state monitor, the first switch 1022, second switch 1023, the 3rd switch 1031, the 4th switch 1032 and static switch 1021 respectively, for controlling the operating state of above-mentioned first switch 1022, second switch 1023, the 3rd switch 1031, the 4th switch 1032 and static switch 1021 according to the power supply state of AC power.
Above-mentioned on-off controller can control above-mentioned switch pointedly according to the power supply state of AC power.Above-mentioned on-off controller can comprise rectification mode controller (not shown) and protection powering mode controller (not shown).Wherein, rectification mode controller is used for when ac power supply is normal, closed above-mentioned first switch 1022, closed above-mentioned static switch 1021, closed above-mentioned second switch 1023, closed above-mentioned 3rd switch 1031 and closed above-mentioned 4th switch 1032 respectively, realize AC power to power to AC load and DC load, and for DC power supply charging object; Protection powering mode controller is used for when ac power supply is abnormal; disconnect above-mentioned first switch 1022, closed above-mentioned second switch 1023, closed above-mentioned 3rd switch 1031 and closed above-mentioned 4th switch 1032 respectively, realizing by DC power supply is the object that AC load and DC load are powered.Above-mentioned on-off controller can also comprise checking discharge mode controller (not shown), checking discharge mode controller is used for when ac power supply is normal, closed above-mentioned first switch 1022, closed above-mentioned static switch 1021, closed above-mentioned second switch 1023, closed above-mentioned 3rd switch 1031 and closed above-mentioned 4th switch 1032 respectively, realize while guarantee is for AC load and DC load normal power supply, checking electric discharge is carried out to DC power supply.
In some optional implementations of the present embodiment, ac/dc electric supply installation 100 can also comprise maintenance circuit 104, the first end of above-mentioned maintenance circuit 104 is connected with above-mentioned AC power, second end of above-mentioned maintenance circuit is connected with above-mentioned AC load, for isolating above-mentioned ac/dc conversion line 101, ac power supply line 102 and direct current supply line 103.Above-mentioned maintenance circuit 104 comprises the 5th switch 1041, and the first end of above-mentioned 5th switch 1041 is connected with above-mentioned AC power, and the second end of above-mentioned 5th switch 1041 is connected with above-mentioned AC load.
With further reference to Fig. 2, rectification mode refers to the pattern of AC power normal power supply.Under rectification mode, closed first switch 1022, second switch 1023, the 3rd switch 1031 and the 4th switch 1032, disconnect the 5th switch 1041.The alternating current that AC power exports is powered to AC load by the first switch 1022, static switch 1021 and second switch 1023; Static switch 1,021 second end connects the interchange end of ac/dc reversible transducer 1011, and alternating current obtains direct current after ac/dc reversible transducer 1011 is changed.Direct current has two kinds of purposes: one is charged to DC power supply by the 3rd switch 1031; Two is powered to DC load by the 4th switch 1032.
With further reference to Fig. 3, it illustrates the structure chart of ac/dc electric supply installation 100 under load protection pattern of the application.Load protection pattern refers to that AC power occurs that power supply is lost or power supply such as to be transfinited at the situation, causes the pattern of abnormal electrical power supply.Under load protection pattern, in order to protection device is not damaged by abnormal current, need disconnection first switch 1022 and the 5th switch 1041, closed second switch 1023, the 3rd switch 1031 and the 4th switch 1032.Now, DC power supply is powered to DC load by the 3rd switch 1031 and the 4th switch 1032; And by ac/dc reversible transducer 1011, direct current is converted to alternating current, then power to AC load through second switch 1023.Achieve when ac power supply is abnormal, by the normal power supply of DC power supply to AC load and DC load, improve for electrical stability.
With further reference to Fig. 4, it illustrates the structure chart of ac/dc electric supply installation 100 under checking discharge mode of the application.During rectification mode, AC power is charged to DC power supply.DC power supply is generally battery, and battery needs to consider charged state.Therefore, need interval setting-up time to carry out discharge examination to battery, namely verify discharge mode.Under checking discharge mode, closed first switch 1022, second switch 1023, the 3rd switch 1031 and the 4th switch 1032, disconnect the 5th switch 1041, conducting static switch 1021.
Under checking discharge mode, battery discharges in the mode of constant current or invariable power, discharge process comprises: if the discharge power of battery is greater than the consumed power of load (AC load and/or DC load), then unnecessary discharge power gives other electricity consumption load supplying by ac/dc reversible transducer 1011 inversion; If the discharge power of battery is less than load consuming power, then the discharge power that load lacks is provided by AC power.
With further reference to Fig. 5, it illustrates the structure chart of ac/dc electric supply installation under maintenance model of the application.Maintenance model is ac/dc conversion line 101, exception appears in ac power supply line 102 and/or direct current supply line 103, or pattern during 100 periodic maintenance of ac/dc electric supply installation.Under maintenance model, disconnect the first switch 1022 and the 3rd switch 1031, closed second switch 1023, the 4th switch 1032 and the 5th switch 1041.Now, because the first switch 1022 disconnects, the 5th switch 1041 closes, and AC power can only be powered to AC load, no longer for DC power supply charging and DC load are powered.3rd switch 1031 disconnects, and DC power supply is also no longer powered for DC load and AC load.
The present embodiment additionally provides a kind of uninterruptible power system, and said system comprises above-mentioned ac/dc electric supply installation 100.Majority needs the equipment of uninterrupted power supply usually to comprise AC load and DC load simultaneously, in order to improve the confession electrical stability of equipment, usually two above-mentioned ac/dc electric supply installations 100 are formed uninterrupted power supply unit 601, single above-mentioned uninterrupted power supply unit 601 is two groups of load supplyings, often organize above-mentioned load and comprise AC load and DC load, the AC load that each above-mentioned ac/dc electric supply installation 100 connects and DC load do not belong to same group of above-mentioned load, namely each above-mentioned ac/dc electric supply installation 100 is two groups of load crossfeeds, also namely often organize load simultaneously by two ac/dc electric supply installations 100 for it is powered.Due to the ac power supply line 102 in each ac/dc electric supply installation 100 with direct current supply line 103 can be DC load and AC load is powered, this just makes N platform equipment have the power supply reliability of 2N platform equipment.
More than describe and be only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art are to be understood that, invention scope involved in the application, be not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should be encompassed in when not departing from described inventive concept, other technical scheme of being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed simultaneously.The technical characteristic that such as, disclosed in above-mentioned feature and the application (but being not limited to) has similar functions is replaced mutually and the technical scheme formed.

Claims (12)

1. an ac/dc electric supply installation, is characterized in that, described device comprises:
Ac/dc conversion line, for realizing the mutual conversion between direct current and alternating current;
Ac power supply line, is connected with AC power and described ac/dc conversion line, for being that AC load is powered by described AC power, and by described ac/dc conversion line, the alternating current that described AC power exports is converted to direct current;
Direct current supply line, be connected with DC power supply, for when described ac power supply is normal, by the direct current be converted to by described ac/dc conversion line be described DC power supply charging, and power for DC load, when described ac power supply is abnormal, be that described DC load is powered by described DC power supply, and by described ac/dc conversion line, the direct current that described DC power supply exports to be converted to alternating current be that described AC load is powered.
2. device according to claim 1, is characterized in that, described ac power supply line comprises:
Static switch, for connecting AC power and AC load, closed when ac power supply is normal, disconnect when ac power supply is abnormal;
First switch, the first end of described first switch is connected with described AC power, and the second end of described first switch is connected with the first end of described static switch, for being switched on or switched off the electric current flowing through described static switch;
Second switch, the first end of described second switch is connected with the second end of described static switch, and the second end of described second switch is connected with described AC load, for being switched on or switched off the alternating current of powering to described AC load.
3. device according to claim 2, is characterized in that, described direct current supply line comprises:
3rd switch, the first end of described 3rd switch is connected with described DC power supply, for being switched on or switched off described DC power supply;
4th switch, the first end of described 4th switch is connected with the second end of described 3rd switch, and the second end of described 4th switch is connected with described DC load, for being switched on or switched off the direct current of powering to described DC load.
4. device according to claim 3, is characterized in that, described ac/dc conversion line comprises:
Ac/dc reversible transducer, the interchange end of described ac/dc reversible transducer is connected with the second end of described static switch, the DC terminal of described ac/dc reversible transducer is connected with the second end of described 3rd switch, for alternating current is converted to direct current, or direct current is converted to alternating current.
5. device according to claim 4, is characterized in that, described device also comprises:
Power supply state monitor, described power supply state monitor is connected with described AC power, for monitoring the power supply state of described AC power.
6. device according to claim 5, is characterized in that, described device also comprises:
On-off controller, be connected with described power supply state monitor, the first switch, second switch, the 3rd switch, the 4th switch and static switch respectively, for controlling the operating state of described first switch, second switch, the 3rd switch, the 4th switch and static switch according to the power supply state of described AC power.
7. device according to claim 6, is characterized in that, described on-off controller comprises:
Rectification mode controller, for when ac power supply is normal, closed described first switch, closed described static switch, closed described second switch, closed described 3rd switch and closed described 4th switch respectively;
Protection powering mode controller, for when ac power supply is abnormal, disconnects described first switch, closed described second switch, closed described 3rd switch and closed described 4th switch respectively.
8. device according to claim 7, is characterized in that, described on-off controller also comprises:
Checking discharge mode controller, for when ac power supply is normal, closed described first switch, closed described static switch, closed described second switch, closed described 3rd switch and closed described 4th switch respectively.
9. device according to claim 1, is characterized in that, described device also comprises:
Maintenance circuit, the first end of described maintenance circuit is connected with described AC power, and the second end of described maintenance circuit is connected with described AC load, for isolating described ac/dc conversion line, ac power supply line and direct current supply line.
10. device according to claim 9, is characterized in that, described maintenance circuit comprises the 5th switch, and the first end of described 5th switch is connected with described AC power, and the second end of described 5th switch is connected with described AC load.
11. 1 kinds of uninterruptible power systems, is characterized in that, described system comprises the arbitrary described ac/dc electric supply installation of claim 1 to 10.
12. systems according to claim 11, it is characterized in that, two described ac/dc electric supply installations form uninterrupted power supply unit, single described uninterrupted power supply unit is two groups of load supplyings, often organize described load and comprise AC load and DC load, the AC load that each described ac/dc electric supply installation connects and DC load do not belong to load described in same group.
CN201510707260.7A 2015-10-27 2015-10-27 Ac/dc is for electric installation and uninterruptible power system Active CN105162125B (en)

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CN106300531A (en) * 2016-08-31 2017-01-04 西安特锐德智能充电科技有限公司 A kind of power supply change-over device based on charging pile
CN107196490A (en) * 2017-06-12 2017-09-22 中车青岛四方车辆研究所有限公司 The control method of power circuit, railway vehicle air conditioner and power circuit
CN108400650A (en) * 2018-03-14 2018-08-14 中国能源建设集团广东省电力设计研究院有限公司 Power of alterating and direct current integral system
CN112187026A (en) * 2020-09-02 2021-01-05 安徽绿沃循环能源科技有限公司 Energy storage circuit and energy storage device

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CN201854080U (en) * 2010-03-05 2011-06-01 天津市爱和德电源系统有限公司 Contactless intelligent compensating ultralow power consumption uninterrupted power supply (UPS)
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Publication number Priority date Publication date Assignee Title
CN106023447A (en) * 2016-07-25 2016-10-12 杭州排山信息科技有限公司 Power management system applied to public bike system
CN106300531A (en) * 2016-08-31 2017-01-04 西安特锐德智能充电科技有限公司 A kind of power supply change-over device based on charging pile
CN106300531B (en) * 2016-08-31 2018-12-21 西安特锐德智能充电科技有限公司 A kind of power supply change-over device based on charging pile
CN107196490A (en) * 2017-06-12 2017-09-22 中车青岛四方车辆研究所有限公司 The control method of power circuit, railway vehicle air conditioner and power circuit
CN108400650A (en) * 2018-03-14 2018-08-14 中国能源建设集团广东省电力设计研究院有限公司 Power of alterating and direct current integral system
CN112187026A (en) * 2020-09-02 2021-01-05 安徽绿沃循环能源科技有限公司 Energy storage circuit and energy storage device

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