CN111146856B - Power supply device capable of switching between large power and small power - Google Patents

Power supply device capable of switching between large power and small power Download PDF

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Publication number
CN111146856B
CN111146856B CN202010061267.7A CN202010061267A CN111146856B CN 111146856 B CN111146856 B CN 111146856B CN 202010061267 A CN202010061267 A CN 202010061267A CN 111146856 B CN111146856 B CN 111146856B
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China
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block
cavity
spring
sliding
power
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CN202010061267.7A
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Chinese (zh)
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CN111146856A (en
Inventor
不公告发明人
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State Grid Shanghai Electric Power Co Ltd
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State Grid Shanghai Electric Power Co Ltd
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Priority to CN202010061267.7A priority Critical patent/CN111146856B/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/70Structural association with built-in electrical component with built-in switch
    • H01R13/703Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
    • H01R13/7031Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30Systems 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
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20End-user application control systems

Abstract

The invention relates to a high-low power switching power supply device, which comprises a shell, wherein a sliding block is arranged at the left end of the shell and can move left and right, a high-power socket is fixedly arranged in the sliding block, a first conductive block is fixedly connected at the right end of the high-power socket, a first groove is formed in the first conductive block, and a conductive lug is fixedly arranged in the first groove.

Description

Power supply device capable of switching between large power and small power
Technical Field
The invention relates to the technical field of power supply, in particular to a power supply device capable of switching large power and small power.
Background
In our life, a plurality of public charging stations are available, common charging stations can only supply power for electric vehicles or household appliances, the function is single, when high power needs to be used, a transfer device needs to be searched to change the power, time and labor are wasted, meanwhile, the large power and the small power in a circuit are used simultaneously, the safety of the circuit is not facilitated, accidents are easy to happen, the service life of the charging stations is influenced, and the invention is provided for solving the problems.
Disclosure of Invention
In view of the above technical deficiencies, the present invention provides a power supply apparatus with switching between high and low powers, which can overcome the above drawbacks.
The invention relates to a power supply device capable of switching between high power and low power, which comprises a shell, wherein a sliding block is arranged at the left end of the shell and can move left and right, a high-power socket is fixedly arranged in the sliding block, a first conductive block is fixedly connected at the right end of the high-power socket, a first groove is arranged in the first conductive block, a conductive lug is fixedly arranged in the first groove, a first spring cavity is symmetrically arranged at the right end of the sliding block from top to bottom, a first spring is fixedly connected between the sliding block and the first spring cavity, a first inclined block is arranged in the first spring cavity with the symmetrical lower end and can move up and down, a plurality of metal blocks are arranged in the first inclined block, a second spring cavity is arranged at the lower end of the first inclined block, a second spring is fixedly connected between the second spring cavity and the first inclined block, a plurality of low-power sockets are arranged at the lower end of the sliding block, and a second conductive block, the first inclined block extends into the second conductive blocks, when high-power supply is needed, the sliding block moves rightwards, so that the first inclined block is driven to move downwards, and at the moment, the second conductive blocks do not supply power to the low-power socket any more, so that the safety of high-power supply is ensured;
the high-power spring type electric appliance power supply device is characterized in that a high-power supply mechanism is arranged at the upper end of the first spring cavity and can supply power to a high-power electric appliance, a switching mechanism is arranged at the lower end of the high-power supply mechanism and can perform mode switching.
Further, the high-power supply mechanism comprises a rack fixedly connected and arranged at the upper end of the sliding block, a third spring cavity is arranged at the left end of the rack, a third spring is fixedly connected and arranged between the third spring cavity and the rack, a first electromagnet is fixedly connected and arranged at the right end of the rack, a second sliding cavity is arranged at the right end of the first electromagnet, a second electromagnet is fixedly arranged on the wall of the right end of the second sliding cavity, a first rotating shaft is rotatably arranged in the second sliding cavity, a first gear is fixedly arranged on the first rotating shaft, the rack can drive the first gear to rotate, a transmission cavity is arranged at the lower end of the second sliding cavity, the first rotating shaft extends into the transmission cavity, a second gear is fixedly arranged at the lower end of the first rotating shaft, a third gear is meshed at the right end of the second gear, and a second rotating shaft is rotatably arranged at the lower end of the third gear, the fixed rotatory piece that is equipped with of second pivot lower extreme, fixed one-way diode that is equipped with in the rotatory piece, the fixed fourth conducting block that is equipped with of one-way diode right-hand member, rotatory piece left end fixed connection is equipped with the sheetmetal, the fixed rectifier that is equipped with of rotatory piece right-hand member, be equipped with the third conducting block in the rectifier.
Further, the switching mechanism comprises an induction cavity arranged in the shell, an induction coil is arranged in the induction cavity, an induction inclined block is arranged in the induction coil and can move up and down, a first sliding cavity is arranged at the lower end of the induction inclined block, a second inclined block is arranged in the first sliding cavity and can move left and right, a first buffer block is fixedly connected to the second inclined block, a fourth spring cavity is arranged at the right end of the first buffer block, a fourth spring is fixedly connected between the fourth spring cavity and the first buffer block, a third sliding cavity is arranged at the left end of the second inclined block, an insulation top block is arranged in the third sliding cavity and can move up and down, a second buffer block is fixedly connected to the insulation top block, a fifth spring cavity is arranged at the lower end of the second buffer block, and a fifth spring is fixedly connected between the fifth spring cavity and the second buffer block, the insulating ejector block is provided with a fourth sliding cavity, the fourth sliding cavity is internally provided with conductive inclined blocks in a bilateral symmetry mode, and fifth conductive blocks are fixedly arranged between the conductive inclined blocks in the bilateral symmetry mode.
Further, the left end symmetry fixed connection is equipped with the third buffer block on the electrically conductive sloping block, the third buffer block left end is equipped with sixth spring chamber, sixth spring chamber with fixed connection is equipped with the sixth spring between the third buffer block, the electrically conductive sloping block left end is equipped with the second recess, sixth spring chamber left end is equipped with the fifth sliding chamber, the fixed sixth conducting block that is equipped with in fifth sliding chamber left end, the sixth conducting block extends to in the second recess, the electrically conductive sloping block can remove about in the fifth sliding chamber.
Further, rectifier right-hand member fixed connection is equipped with the cable, the fixed battery that is equipped with of right lower extreme in the casing, the fixed transformer that is equipped with in battery left end, the transformer with battery electricity federation, casing lower extreme fixed connection is equipped with the pillar, pillar lower extreme fixed connection is equipped with the base.
The invention has the beneficial effects that: the invention has simple structure and convenient operation, can selectively use large power and small power to supply power, automatically cuts off the small power supply device when using large power to supply power, ensures the stability of output power when switching large power and small power, and simultaneously maintains daily power supply through the emergency power supply when the circuit is cut off, thereby being convenient and fast and improving certain safety.
Drawings
The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of the drawing itself.
Fig. 1 is a schematic diagram of an overall structure of a large-power and small-power switching power supply device according to the present invention;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic view of the structure at B-B in FIG. 2;
fig. 4 is a schematic structural diagram at C in fig. 1.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
As shown in fig. 1-4, a power supply device capable of switching between large power and small power includes a housing 10, a slide block 27 is disposed at the left end of the housing 10 and capable of moving left and right, a large power socket 28 is fixedly disposed in the slide block 27, a first conductive block 51 is fixedly connected to the right end of the large power socket 28, a first groove 30 is disposed in the first conductive block 51, a conductive protrusion 48 is fixedly disposed in the first groove 30, first spring cavities 49 are vertically and symmetrically disposed at the right end of the slide block 27, a first spring 50 is fixedly connected between the slide block 27 and the first spring cavity 49, a first inclined block 25 is vertically and movably disposed in the first spring cavity 49 with a symmetrical lower end, a plurality of metal blocks 22 are disposed in the first inclined block 25, a second spring cavity 20 is disposed at the lower end of the first inclined block 25, a second spring 21 is fixedly connected between the second spring cavity 20 and the first inclined block 25, the lower end of the sliding block 27 is provided with a plurality of low-power sockets 23, the right ends of the plurality of low-power sockets 23 are fixedly connected with a second conductive block 24, the first inclined block 25 extends into the second conductive block 24, when high-power supply is needed, the sliding block 27 moves rightwards, so that the first inclined block 25 is driven to move downwards, and at the moment, the plurality of second conductive blocks 24 do not supply power to the low-power sockets 23 any more, so that the safety of high-power supply is ensured;
the upper end of the first spring cavity 49 is provided with a high-power supply mechanism 80, the high-power supply mechanism 80 can supply power for a high-power electric appliance, the lower end of the high-power supply mechanism 80 is provided with a switching mechanism 81, and the switching mechanism 81 can perform mode switching.
Advantageously, the high-power supply mechanism 80 includes a rack 33 fixedly connected and arranged at the upper end of the sliding block 27, a third spring cavity 31 is arranged at the left end of the rack 33, a third spring 32 is fixedly connected and arranged between the third spring cavity 31 and the rack 33, a first electromagnet 34 is fixedly connected and arranged at the right end of the rack 33, a second sliding cavity 37 is arranged at the right end of the first electromagnet 34, a second electromagnet 38 is fixedly arranged on the right end wall of the second sliding cavity 37, a first rotating shaft 36 is rotatably arranged in the second sliding cavity 37, a first gear 35 is fixedly arranged on the first rotating shaft 36, the rack 33 can drive the first gear 35 to rotate, a transmission cavity 39 is arranged at the lower end of the second sliding cavity 37, the first rotating shaft 36 extends into the transmission cavity 39, a second gear 52 is fixedly arranged at the lower end of the first rotating shaft 36, a third gear 40 is engaged and arranged at the right end of the second gear 52, the rotatable second pivot 41 that is equipped with of third gear 40 lower extreme, the fixed rotatory piece 44 that is equipped with of second pivot 41 lower extreme, fixed unidirectional diode 46 that is equipped with in the rotatory piece 44, the fixed fourth conducting block 45 that is equipped with of unidirectional diode 46 right-hand member, rotatory piece 44 left end fixed connection is equipped with sheetmetal 47, the fixed rectifier 42 that is equipped with of rotatory piece 44 right-hand member, be equipped with third conducting block 43 in the rectifier 42.
Beneficially, the switching mechanism 81 includes an induction chamber 12 disposed in the housing 10, an induction coil 13 is disposed in the induction chamber 12, an induction inclined block 14 is disposed in the induction coil 13 and can move up and down, a first sliding chamber 15 is disposed at a lower end of the induction inclined block 14, a second inclined block 67 is disposed in the first sliding chamber 15 and can move left and right, a first buffer block 68 is fixedly connected to the second inclined block 67, a fourth spring chamber 29 is disposed at a right end of the first buffer block 68, a fourth spring 26 is fixedly connected between the fourth spring chamber 29 and the first buffer block 68, a third sliding chamber 66 is disposed at a left end of the second inclined block 67, an insulating top block 62 is disposed in the third sliding chamber 66 and can move up and down, a second buffer block 63 is fixedly connected to the insulating top block 62, a fifth spring chamber 65 is disposed at a lower end of the second buffer block 63, and a fifth spring 64 is fixedly connected between the fifth spring chamber 65 and the second buffer block 63, a fourth sliding cavity 61 is formed in the insulating top block 62, conductive inclined blocks 57 are symmetrically arranged in the fourth sliding cavity 61 in the left-right direction, and fifth conductive blocks 55 are fixedly arranged between the conductive inclined blocks 57 in the left-right direction.
Beneficially, a third buffer block 56 is fixedly connected to the conductive inclined block 57 with symmetrical left end, a sixth spring cavity 53 is arranged at the left end of the third buffer block 56, a sixth spring 54 is fixedly connected between the sixth spring cavity 53 and the third buffer block 56, a second groove 58 is arranged at the left end of the conductive inclined block 57, a fifth sliding cavity 60 is arranged at the left end of the sixth spring cavity 53, a sixth conductive block 59 is fixedly connected to the left end of the fifth sliding cavity 60, the sixth conductive block 59 extends into the second groove 58, and the conductive inclined block 57 can move left and right in the fifth sliding cavity 60.
Advantageously, the right end of the rectifier 42 is fixedly connected with the cable 11, the right lower end of the casing 10 is fixedly provided with the storage battery 16, the left end of the storage battery 16 is fixedly provided with the transformer 17, the transformer 17 is electrically connected with the storage battery 16, the lower end of the casing 10 is fixedly connected with the pillar 18, and the lower end of the pillar 18 is fixedly connected with the base 19.
The implementation method of the power supply device with large and small power switching comprises the following steps:
in the initial state of the invention, the induction inclined block 14 is far away from the second inclined block 67, and the conductive inclined blocks 57 which are symmetrical left and right are mutually attached;
1. when the low-power supply is needed, the plug is connected with the low-power socket 23, and the cable 11 outputs electric energy to the low-power socket 23 through the rectifier 42, so that the low-power supply is realized;
2. when high-power supply is needed, the second electromagnet 38 is started, the second electromagnet 38 and the first electromagnet 34 are mutually attracted, the second electromagnet 38 drives the rack 33 to move rightwards through the first electromagnet 34, the rack 33 drives the sliding block 27 to move rightwards, and at the moment, the conductive bump 48 is attached to the left wall of the first groove 30;
3. the rack 33 drives the first gear 35 to rotate, the first gear 35 drives the first rotating shaft 36 to rotate, the first rotating shaft 36 drives the second gear 52 to rotate, the second gear 52 drives the third gear 40 to rotate, the third gear 40 drives the second rotating shaft 41 to rotate, the second rotating shaft 41 drives the rotating block 44 to rotate, the rotating block 44 drives the high-power supply mechanism of the rotating pillar 1 to rotate by 80 degrees, so that the metal sheet 47 is attached to the third conductive block 43, the fourth conductive block 45 is attached to the conductive bump 48, the one-way diode 46 conducts electricity at the moment, and the electric energy of the cable 11 is output to the high-power socket 28 through the one-way diode 46 through the rectifier 42;
4. the slide block 27 moves rightwards, so that the first inclined block 25 is driven to move downwards, and at the moment, the metal block 22 and the second conductive block 24 are staggered and are not conductive any more, so that the low-power socket 23 is disconnected, and the stability of output voltage is realized;
5. when the cable 11 is broken, the induction coil 13 enables the induction inclined block 14 to move downwards, the induction inclined block 14 drives the second inclined block 67 to move leftwards, the second inclined block 67 drives the insulation top block 62 to move upwards, the insulation top block 62 drives the bilaterally symmetrical conductive inclined blocks 57 to separate, and at the moment, the fifth conductive block 55 is not contacted with the conductive inclined blocks 57 any more;
6. the storage battery 16 is started, and the electric energy is output to the low-power socket 23 through the transformer 17 and the left end of the second conductive block 24, so that the electric energy supplied by the storage battery 16 is used as emergency.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.

Claims (5)

1. A big low power switching power supply unit, includes the casing, its characterized in that: a sliding block is arranged at the left end of the shell and can move left and right, a high-power socket is fixedly arranged in the sliding block, a first conductive block is fixedly connected at the right end of the high-power socket, a first groove is arranged in the first conductive block, a conductive bump is fixedly arranged in the first groove, a first spring cavity is symmetrically arranged at the right end of the sliding block up and down, a first spring is fixedly connected between the sliding block and the first spring cavity, a first inclined block is vertically arranged in the first spring cavity with symmetrical lower end, a plurality of metal blocks are arranged in the first inclined block, a second spring cavity is arranged at the lower end of the first inclined block, a second spring is fixedly connected between the second spring cavity and the first inclined block, a plurality of low-power sockets are arranged at the lower end of the sliding block, a second conductive block is fixedly connected at the right ends of the plurality of low-power sockets, and the first inclined block extends into the second conductive block, when high-power supply is needed, the sliding block moves rightwards, so that the first inclined block is driven to move downwards, and at the moment, the second conductive blocks do not supply power to the low-power socket any more, so that the safety of high-power supply is ensured; the high-power spring type electric appliance power supply device is characterized in that a high-power supply mechanism is arranged at the upper end of the first spring cavity and can supply power to a high-power electric appliance, a switching mechanism is arranged at the lower end of the high-power supply mechanism and can perform mode switching.
2. The apparatus according to claim 1, wherein: the high-power supply mechanism comprises a rack fixedly connected and arranged at the upper end of the sliding block, a third spring cavity is arranged at the left end of the rack, a third spring is fixedly connected and arranged between the third spring cavity and the rack, a first electromagnet is fixedly connected and arranged at the right end of the rack, a second sliding cavity is arranged at the right end of the first electromagnet, a second electromagnet is fixedly arranged on the right end wall of the second sliding cavity, a first rotating shaft is rotatably arranged in the second sliding cavity, a first gear is fixedly arranged on the first rotating shaft, the rack can drive the first gear to rotate, a transmission cavity is arranged at the lower end of the second sliding cavity, the first rotating shaft extends into the transmission cavity, a second gear is fixedly arranged at the lower end of the first rotating shaft, a third gear is meshed at the right end of the second gear, a second rotating shaft is rotatably arranged at the lower end of the third gear, and a rotating block is fixedly arranged at the lower end of the, the rotary block is fixedly provided with a one-way diode, the right end of the one-way diode is fixedly provided with a fourth conductive block, the left end of the rotary block is fixedly connected with a metal sheet, the right end of the rotary block is fixedly provided with a rectifier, and the rectifier is internally provided with a third conductive block.
3. The apparatus according to claim 2, wherein: the switching mechanism comprises an induction cavity arranged in the shell, an induction coil is arranged in the induction cavity, an induction inclined block is arranged in the induction coil and can move up and down, a first sliding cavity is arranged at the lower end of the induction inclined block, a second inclined block is arranged in the first sliding cavity and can move left and right, a first buffer block is fixedly connected to the second inclined block, a fourth spring cavity is arranged at the right end of the first buffer block, a fourth spring is fixedly connected between the fourth spring cavity and the first buffer block, a third sliding cavity is arranged at the left end of the second inclined block, an insulation top block is arranged in the third sliding cavity and can move up and down, a second buffer block is fixedly connected to the insulation top block, a fifth spring cavity is arranged at the lower end of the second buffer block, a fifth spring is fixedly connected between the fifth spring cavity and the second buffer block, and a fourth sliding cavity is arranged on the insulation top block, and conductive inclined blocks are symmetrically arranged in the fourth sliding cavity in the left-right direction, and fifth conductive blocks are fixedly arranged between the conductive inclined blocks in the left-right direction.
4. The apparatus according to claim 3, wherein: the left end symmetry fixed connection is equipped with the third buffer block on the electrically conductive sloping block, the third buffer block left end is equipped with sixth spring chamber, sixth spring chamber with fixed connection is equipped with the sixth spring between the third buffer block, the electrically conductive sloping block left end is equipped with the second recess, sixth spring chamber left end is equipped with the fifth sliding chamber, the fixed sixth conducting block that is equipped with in fifth sliding chamber left end, the sixth conducting block extends to in the second recess, the electrically conductive sloping block can remove about in the fifth sliding chamber.
5. The device according to claim 4, wherein: the rectifier right-hand member fixed connection is equipped with the cable, the fixed battery that is equipped with of right lower extreme in the casing, the battery left end is fixed and is equipped with the transformer, the transformer with battery electricity federation, casing lower extreme fixed connection is equipped with the pillar, pillar lower extreme fixed connection is equipped with the base.
CN202010061267.7A 2020-01-19 2020-01-19 Power supply device capable of switching between large power and small power Active CN111146856B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010061267.7A CN111146856B (en) 2020-01-19 2020-01-19 Power supply device capable of switching between large power and small power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010061267.7A CN111146856B (en) 2020-01-19 2020-01-19 Power supply device capable of switching between large power and small power

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Publication Number Publication Date
CN111146856A CN111146856A (en) 2020-05-12
CN111146856B true CN111146856B (en) 2020-10-30

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2212279Y (en) * 1994-11-24 1995-11-08 艾连彬 Two-way power supply automatic change-over device
CN201435617Y (en) * 2009-06-22 2010-03-31 武梦仙 Movable standby power source
CN202260609U (en) * 2011-08-26 2012-05-30 维用国际股份有限公司 Power supply switching device
DE102011084660B4 (en) * 2011-10-18 2018-02-15 Bayerische Motoren Werke Aktiengesellschaft Device for power supply
CN203005319U (en) * 2012-12-21 2013-06-19 南京海格专用车技术有限公司 Vehicle power supply centralized controller
EP3252937A1 (en) * 2016-06-03 2017-12-06 Fronius International GmbH Inverter and method for operating an inverter
CN207895997U (en) * 2018-02-17 2018-09-21 黄岸标 Convert power switch

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