CN202424240U - Multifunctional photovoltaic UPS (Uninterruptible Power Supply) system - Google Patents
Multifunctional photovoltaic UPS (Uninterruptible Power Supply) system Download PDFInfo
- Publication number
- CN202424240U CN202424240U CN2012200008669U CN201220000866U CN202424240U CN 202424240 U CN202424240 U CN 202424240U CN 2012200008669 U CN2012200008669 U CN 2012200008669U CN 201220000866 U CN201220000866 U CN 201220000866U CN 202424240 U CN202424240 U CN 202424240U
- Authority
- CN
- China
- Prior art keywords
- unit
- switch element
- inverter
- photovoltaic
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The utility model discloses a multifunctional photovoltaic UPS (Uninterruptible Power Supply) system. The multifunctional photovoltaic UPS system comprises a photovoltaic cell, a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, a fifth switch unit, a DC/DC (Direct Current to Direct Current) unit, a storage battery, a two-way DC/DC unit, an inverter unit and a controller unit, wherein the controller unit is electrically connected with the first switch unit, the second switch unit, the third switch unit, the fourth switch unit and the fifth switch unit, and the control ends of the inverter unit, the two-way DC/DC unit and the DC/DC unit are electrically connected with the controller unit respectively. According to the multifunctional photovoltaic UPS system, the on/off of the first switch unit, the second switch unit, the third switch unit, the fourth switch unit and the fifth switch unit is controlled through the controller unit, and the system has the functions of UPS, off-grid photovoltaic power generation and grid-connected photovoltaic power generation; and the working mode of the system is optimized by the controller unit, so that the utilization efficiency of photovoltaic resources is increased to play the effectiveness to the maximum.
Description
Technical field
The utility model relates to photovoltaic inverter field, especially relates to a kind of multi-functional photovoltaic ups system.
Background technology
Serious day by day along with the sustainable growth of world energy sources demand and problem of environmental pollution taps a new source of energy and regenerative resource receives the attention of countries in the world day by day.Photovoltaic generation has the advantage of green, environmental protection as a kind of new forms of energy industry.UPS be a kind ofly contain energy storage device, be the uninterrupted power supply of the main constant voltage constant frequency of forming with the inverter, for load provides uninterrupted power supply.
In the market photovoltaic generation product and UPS product function are single, cause resource to can not get sufficient utilization.Photovoltaic generation comprises photovoltaic off-grid generating and two kinds of patterns of parallel network power generation; The photovoltaic cell pole plate is on the high side at present, causes the photovoltaic generation cost higher, and photovoltaic off-grid generating, UPS and parallel network power generation function are combined; Realize the maximum using of resource, have significant values.
Summary of the invention
The utility model is to the defective that the above-mentioned background technology exists a kind of employing modularized design to be provided; The function that has UPS function, photovoltaic off-grid generating and parallel network power generation simultaneously; But Automatic Optimal system works pattern; Improve the utilization ratio of photovoltaic resources, a kind of multi-functional photovoltaic ups system of playing effectiveness to greatest extent.
For realizing above-mentioned purpose; The utility model discloses a kind of multi-functional photovoltaic ups system; It comprises photovoltaic cell, first switch element, second switch unit, the 3rd switch element, the 4th switch element, the 5th switch element, DC/DC unit, storage battery, two-way DC/DC unit, inverter unit and controller unit; Said photovoltaic cell and said first switch element and second switch unit one end electrically connect; The input of the said second switch unit other end and said DC/DC unit electrically connects, and the output of said DC/DC unit and said storage battery electrically connect; Said the 3rd switch element one end and said storage battery electrically connect; The low-pressure side of the said first switch element other end and said the 3rd switch element other end and said two-way DC/DC unit electrically connects; The high-pressure side of said two-way DC/DC unit and the input of said inverter unit electrically connect; The parallelly connected bus capacitor group that is connected with between the high-pressure side of said two-way DC/DC unit and the input of said inverter unit; First link of said inverter unit and said the 4th switch element one end electrically connect; Second link of said inverter unit and said the 5th switch element one end electrically connect; Said the 4th switch element other end is electrically connected with electrical network; Said the 5th switch element other end is electrically connected with uses electric loading, and said controller unit and said first switch element, second switch unit, the 3rd switch element, the 4th switch element and the 5th switch element electrically connect, and said inverter unit control end, two-way DC/DC unit controls end and DC/DC unit controls end electrically connect with said controller unit respectively.
Further, said controller unit also is electrically connected with display unit, man-machine interface and communication unit.
Further, the filter circuit that said inverter unit is provided with inverter circuit and electrically connects with inverter circuit, the input of the corresponding said inverter unit of said inverter circuit one end, second link of the corresponding said inverter unit of said filter circuit one end.
Further; Said controller unit obtains the system works pattern that the user is provided with, and controller unit is controlled said first switch element, second switch unit, the 3rd switch element, the 4th switch element and the 5th switch element break-make and carried out the system works mode switch.
Further, said system works pattern is set to UPS pattern, photovoltaic off-grid inverter pattern or photovoltaic combining inverter pattern.
In sum; A kind of multi-functional photovoltaic ups system of the utility model is through being provided with first switch element, second switch unit, the 3rd switch element, the 4th switch element and the 5th switch element and controlling on off operating mode through controller unit; Adopt modularized design scheme; System can run on three kinds of mode of operations: UPS pattern, photovoltaic off-grid inverter pattern, photovoltaic combining inverter pattern, have UPS function, photovoltaic off-grid generating and parallel network power generation function, and controller unit is according to system running state parameter automatic optimization system works pattern; Improve the utilization ratio of photovoltaic resources, play effectiveness to greatest extent.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the structural representation of the utility model ups system.
Fig. 3 is the structural representation of the utility model first photovoltaic off-grid inverter system.
Fig. 4 is the structural representation of the utility model second photovoltaic off-grid inverter system.
Fig. 5 is the structural representation of the utility model photovoltaic combining inverter system.
Embodiment
For further understanding characteristic, technological means and the specific purposes that reached, the function of the utility model, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1; A kind of multi-functional photovoltaic ups system of the utility model comprises photovoltaic cell 100, the first switch element K1, second switch unit K2, the 3rd switch element K3, the 4th switch element K4, the 5th switch element K5, DC/DC unit 200, storage battery 300, two-way DC/DC unit 400, inverter unit 500 and controller unit 600; Said photovoltaic cell 100 electrically connects with said first switch element K1 and second switch unit K2 one end; The input of the said second switch unit K2 other end and said DC/DC unit 200 electrically connects, and the output of said DC/DC unit 200 and said storage battery 300 electrically connect; Said the 3rd switch element K3 one end and said storage battery 300 electrically connect; The low-pressure side of the said first switch element K1 other end and said the 3rd switch element K3 other end and said two-way DC/DC unit 400 electrically connects; The high-pressure side of said two-way DC/DC unit 400 and the input of said inverter unit 500 electrically connect; The parallelly connected bus capacitor group C that is connected with between the high-pressure side of said two-way DC/DC unit 400 and the input of said inverter unit 500, said bus capacitor group C are used for the instantaneous power of the said two-way DC/DC of balance unit 400 and said inverter unit 500; First link of said inverter unit 500 and said the 4th switch element K4 one end electrically connect; Second link of said inverter unit 500 and said the 5th switch element K5 one end electrically connect; Said the 4th switch element K4 other end is electrically connected with electric loading 700, and said the 5th switch element K5 other end is electrically connected with electrical network 800; The filter circuit 520 that said inverter unit 500 is provided with inverter circuit 510 and electrically connects with inverter circuit 510; The input of the corresponding said inverter unit 500 of said inverter circuit 510 1 ends, second link of the corresponding said inverter unit 500 of said filter circuit 520 1 ends.
Said controller unit 600 also is electrically connected with display unit 900, man-machine interface 1000 and communication unit 1100; The setup parameter of said display unit 900 display systems and system running state parameter; Said man-machine interface 1000 realizes system parameter setting function, said communication unit 1100 realization systems and extraneous communication function.
Said controller unit 600 obtains the system works pattern that the user is provided with through man-machine interface 1000; Said system works pattern is set to UPS pattern, photovoltaic off-grid inverter pattern or photovoltaic combining inverter pattern; Said controller unit 600 electrically connects with the said first switch element K1, second switch unit K2, the 3rd switch element K3, the 4th switch element K4 and the 5th switch element K5; In order to control the break-make of the said first switch element K1, second switch unit K2, the 3rd switch element K3, the 4th switch element K4 and the 5th switch element K5; And then intelligently realize the switching of system works pattern; Said inverter unit 500 control ends, two-way DC/DC unit 400 control ends and DC/DC unit 200 control ends electrically connect with said controller unit 600 respectively, and corresponding actions is made in the said inverter unit of said controller unit 600 controls 500, two-way DC/DC unit 400 and DC/DC unit 200.
When the utility model uses, realize the switching of system works pattern through following steps:
(A), said controller unit 600 obtains the system works pattern that the user is provided with through man-machine interface 1000;
(B), said controller unit 600 obtains the rated input power P of the usefulness electric loading 700 of user's setting through man-machine interface 1000
L
(C), said controller unit 600 is provided with according to the user and realizes the system works mode switch, when the system works pattern is the UPS pattern, then changes step D over to; When the system works pattern was photovoltaic off-grid inverter pattern, said controller unit 600 detected photovoltaic cell 100 real output P
PVIf, photovoltaic cell 100 real output P
PV>=with the rated input power P of electric loading 700
LThe time, then change step e over to, if photovoltaic cell 100 real output P
PV＜with the rated input power P of electric loading 700
LThe time, then change step F over to; When the system works pattern is the photovoltaic combining inverter pattern, then change step G over to;
(D), as shown in Figure 2; Said controller unit 600 said first switch element K1 of control and second switch unit K2 break off; The 3rd switch element K3, the 4th switch element K4 and the 5th switch element K5 are closed, this moment storage battery 300, two-way DC/DC unit 400, bus capacitor group C, inverter unit 500, controller unit 600, with electric loading 700 and electrical network 800 formation ups systems;
When electrical network 800 operate as normal; Electrical network 800 charges through 400 pairs of storage batterys 300 of said inverter unit 500 and two-way DC/DC unit; Inverter unit 500 is operated in rectification state, and said inverter circuit 510 and filter circuit 520 constitute circuit of power factor correction;
When electrical network 800 breaks down, said storage battery 300 through said two-way DC/DC unit 400 and inverter circuit unit 500 for the reserve uninterrupted power supply to be provided with electric loading 700;
(E), as shown in Figure 3; Said controller unit 600 control the 3rd switch element K3 and the 5th switch element K5 break off; The first switch element K1, second switch unit K2 and the 4th switch element K4 are closed; This moment photovoltaic cell 100, two-way DC/DC unit 400, bus capacitor group C, inverter circuit unit 500, controller unit 600 and with the electric loading 700 formations first photovoltaic off-grid inverter system; Two-way DC/ DC unit 400 and 200 associated working of DC/DC unit are in the MPPT pattern; The output voltage values and the output current value of controller unit 600 detecting real-time photovoltaic cells 100, and the peak power output value of following the trail of photovoltaic cell 100 guarantee that photovoltaic cell 100 is in the maximum power value output state under the varying environment condition.Photovoltaic cell 100 directly is with electric loading 700 power supplies, and accumulators 300 chargings simultaneously, to reduce the number of times that discharges and recharges of storage battery 300, the useful life of prolongation storage battery 300;
(F), as shown in Figure 4; Said controller unit 600 control first switch element K1 and the 5th switch element K5 break off; Second switch unit K2, the 3rd switch element K3 and the 4th switch element K4 are closed; This moment photovoltaic cell 100, DC/DC unit 200, storage battery 300, two-way DC/DC unit 400, bus capacitor group C, inverter circuit unit 500, controller unit 600 and with the electric loading 700 formations second photovoltaic off-grid inverter system; DC/DC unit 200 works in the MPPT pattern, the output voltage values and the output current value of controller unit 600 detecting real-time photovoltaic cells 100, and the peak power output value of following the trail of photovoltaic cell 100; Guarantee that photovoltaic cell 100 is in the maximum power value output state under the varying environment condition, this moment, photovoltaic cell 100 was common for supplying power with electric loading 700 with storage battery 300;
(G), as shown in Figure 5; Said controller unit 600 control second switch unit K2, the 3rd switch element K3 and the 4th switch element K4 break off; The first switch element K1 and the 5th switch element K5 are closed; Photovoltaic cell 100, two-way DC/DC unit 400, bus capacitor group C, inverter unit 500, controller unit 600 and electrical network 800 constitute the photovoltaic combining inverter systems at this moment; Two-way DC/DC unit 400 works in the MPPT pattern; The output voltage values and the output current value of controller unit 600 detecting real-time photovoltaic cells 100, and the peak power output value of following the trail of photovoltaic cell 100 guarantee that photovoltaic cell 100 is in the maximum power value output state under the varying environment condition.Photovoltaic cell 100 absorb solar energy the electric energy that transforms through said two-way DC/DC unit 400 boost and through inverter unit 500 inversions after and link electrical network 800 and generate electricity.
In sum; A kind of multi-functional photovoltaic ups system of the utility model is through being provided with the first switch element K1, second switch unit K2, the 3rd switch element K3, the 4th switch element K4 and the 5th switch element K5 and controlling on off operating modes through controller unit 600; Adopt modularized design scheme; System can run on three kinds of mode of operations: UPS pattern, photovoltaic off-grid inverter pattern, photovoltaic combining inverter pattern, have UPS function, photovoltaic off-grid generating and parallel network power generation function, and controller unit 600 is according to system running state parameter automatic optimization system works pattern; Adopt the MPPT mode; Guarantee that photovoltaic cell 100 is in the maximum power value output state under the varying environment condition, improve the utilization ratio of photovoltaic resources, play effectiveness to greatest extent.
The above embodiment has only expressed a kind of execution mode of the utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model scope.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to the protection range of the utility model.Therefore, the protection range of the utility model should be as the criterion with accompanying claims.
Claims (5)
1. multi-functional photovoltaic ups system; It is characterized in that: comprise photovoltaic cell (100), first switch element (K1), second switch unit (K2), the 3rd switch element (K3), the 4th switch element (K4), the 5th switch element (K5), DC/DC unit (200), storage battery (300), two-way DC/DC unit (400), inverter unit (500) and controller unit (600); Said photovoltaic cell (100) electrically connects with said first switch element (K1) and second switch unit (K2) end; The input of said second switch unit (K2) other end and said DC/DC unit (200) electrically connects, and the output of said DC/DC unit (200) and said storage battery (300) electrically connect; Said the 3rd switch element (K3) end and said storage battery (300) electrically connect; The low-pressure side of said first switch element (K1) other end and said the 3rd switch element (K3) other end and said two-way DC/DC unit (400) electrically connects; The input of the high-pressure side of said two-way DC/DC unit (400) and said inverter unit (500) electrically connects; The parallelly connected bus capacitor group (C) that is connected with between the high-pressure side of said two-way DC/DC unit (400) and the input of said inverter unit (500); First link of said inverter unit (500) and said the 4th switch element (K4) end electrically connect; Second link of said inverter unit (500) and said the 5th switch element (K5) end electrically connect; Said the 4th switch element (K4) other end is electrically connected with electric loading (700); Said the 5th switch element (K5) other end is electrically connected with electrical network (800); Said controller unit (600) electrically connects with said first switch element (K1), second switch unit (K2), the 3rd switch element (K3), the 4th switch element (K4) and the 5th switch element (K5), and said inverter unit (500) control end, two-way DC/DC unit (400) control end and DC/DC unit (200) control end electrically connect with said controller unit (600) respectively.
2. a kind of multi-functional photovoltaic ups system according to claim 1 is characterized in that: said controller unit (600) also is electrically connected with display unit (900), man-machine interface (1000) and communication unit (1100).
3. a kind of multi-functional photovoltaic ups system according to claim 1; It is characterized in that: the filter circuit (520) that said inverter unit (500) is provided with inverter circuit (510) and electrically connects with inverter circuit (510); The input of the corresponding said inverter units of said inverter circuit (510) one ends (500), second link of the corresponding said inverter units of said filter circuit (520) one ends (500).
4. a kind of multi-functional photovoltaic ups system according to claim 1; It is characterized in that: said controller unit (600) obtains the system works pattern that the user is provided with, and controller unit (600) control said first switch element (K1), second switch unit (K2), the 3rd switch element (K3), the 4th switch element (K4) and the 5th switch element (K5) break-make are carried out the system works mode switch.
5. a kind of multi-functional photovoltaic ups system according to claim 1, it is characterized in that: said system works pattern is set to UPS pattern, photovoltaic off-grid inverter pattern or photovoltaic combining inverter pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200008669U CN202424240U (en) | 2012-01-04 | 2012-01-04 | Multifunctional photovoltaic UPS (Uninterruptible Power Supply) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200008669U CN202424240U (en) | 2012-01-04 | 2012-01-04 | Multifunctional photovoltaic UPS (Uninterruptible Power Supply) system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202424240U true CN202424240U (en) | 2012-09-05 |
Family
ID=46748965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200008669U Expired - Fee Related CN202424240U (en) | 2012-01-04 | 2012-01-04 | Multifunctional photovoltaic UPS (Uninterruptible Power Supply) system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202424240U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427266A (en) * | 2012-01-04 | 2012-04-25 | 广东易事特电源股份有限公司 | Multifunctional photovoltaic UPS (uninterruptible power supply) system and control method thereof |
| CN103560511A (en) * | 2013-11-15 | 2014-02-05 | 北京国电通网络技术有限公司 | Off-grid / grid-connected integrated solar power generation subsystem and system |
| CN103607034A (en) * | 2013-11-13 | 2014-02-26 | 中国能源建设集团广东省电力设计研究院 | Intensive light-storage thermal-cold system |
| CN104319810A (en) * | 2014-10-31 | 2015-01-28 | 广东易事特电源股份有限公司 | Input safety protection circuit of photovoltaic inverter and photovoltaic inverter having safety protection function |
| CN104901418A (en) * | 2015-06-25 | 2015-09-09 | 国网山东省电力公司烟台供电公司 | Transformer substation communication terminal uninterupted alternating current and direct current (AC/DC) power supply system |
| CN106410934A (en) * | 2015-07-28 | 2017-02-15 | 硕天科技股份有限公司 | Hybrid solar power generation system |
| CN108039732A (en) * | 2017-12-29 | 2018-05-15 | 南京熊猫电子股份有限公司 | A kind of and the one-piece type photovoltaic energy-storage system power supply of off-network and its control method |
| CN109390968A (en) * | 2017-08-03 | 2019-02-26 | 絜静精微有限公司 | Mixed type solar converting system |
| WO2021078242A1 (en) * | 2019-10-25 | 2021-04-29 | 苏州宝时得电动工具有限公司 | Inverter having multiple input interfaces |
-
2012
- 2012-01-04 CN CN2012200008669U patent/CN202424240U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427266A (en) * | 2012-01-04 | 2012-04-25 | 广东易事特电源股份有限公司 | Multifunctional photovoltaic UPS (uninterruptible power supply) system and control method thereof |
| CN102427266B (en) * | 2012-01-04 | 2014-03-19 | 广东易事特电源股份有限公司 | Multifunctional photovoltaic UPS (uninterruptible power supply) system and control method thereof |
| CN103607034A (en) * | 2013-11-13 | 2014-02-26 | 中国能源建设集团广东省电力设计研究院 | Intensive light-storage thermal-cold system |
| CN103607034B (en) * | 2013-11-13 | 2015-12-30 | 中国能源建设集团广东省电力设计研究院有限公司 | Intensive light-storage thermal-cold system |
| CN103560511A (en) * | 2013-11-15 | 2014-02-05 | 北京国电通网络技术有限公司 | Off-grid / grid-connected integrated solar power generation subsystem and system |
| CN104319810A (en) * | 2014-10-31 | 2015-01-28 | 广东易事特电源股份有限公司 | Input safety protection circuit of photovoltaic inverter and photovoltaic inverter having safety protection function |
| CN104901418A (en) * | 2015-06-25 | 2015-09-09 | 国网山东省电力公司烟台供电公司 | Transformer substation communication terminal uninterupted alternating current and direct current (AC/DC) power supply system |
| CN106410934A (en) * | 2015-07-28 | 2017-02-15 | 硕天科技股份有限公司 | Hybrid solar power generation system |
| CN109390968A (en) * | 2017-08-03 | 2019-02-26 | 絜静精微有限公司 | Mixed type solar converting system |
| CN108039732A (en) * | 2017-12-29 | 2018-05-15 | 南京熊猫电子股份有限公司 | A kind of and the one-piece type photovoltaic energy-storage system power supply of off-network and its control method |
| WO2021078242A1 (en) * | 2019-10-25 | 2021-04-29 | 苏州宝时得电动工具有限公司 | Inverter having multiple input interfaces |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102427266B (en) | Multifunctional photovoltaic UPS (uninterruptible power supply) system and control method thereof | |
| CN202424240U (en) | Multifunctional photovoltaic UPS (Uninterruptible Power Supply) system | |
| CN102522767B (en) | Schedulable-type photovoltaic energy storage grid-connected power generation system and operating method thereof | |
| CN202586481U (en) | Micro electrical network intelligent balanced charging and power supply system | |
| CN104113133B (en) | Intelligent photovoltaic off-network inverter system and power consumption control method thereof | |
| CN202712873U (en) | Intelligent household solar control inverter | |
| CN101304221A (en) | Solar photovoltaic interconnected inverter | |
| CN204886384U (en) | Integrative terminal of domestic photovoltaic power generation energy storage of miniwatt | |
| CN202405863U (en) | Hybrid inverter | |
| CN203761319U (en) | Comprehensive type distributed photovoltaic energy storage system | |
| CN101800437A (en) | Wind/grid generating device for communication | |
| CN203951202U (en) | Micro-mains supply system for a kind of wind light mutual complementing family | |
| CN201263091Y (en) | Photovoltaic power generation system with grid-connected generation, independent power generation and UPS function | |
| CN106786755A (en) | A kind of energy-storage system and control method | |
| AU2015101163A4 (en) | A control system for energy storage | |
| CN103812140A (en) | Wind energy, solar energy and commercial power complementary electric vehicle charging system | |
| CN204205617U (en) | A kind of power conversion is generated electricity by way of merging two or more grid systems electric power system | |
| CN203859575U (en) | Reverse control integrated machine of hybrid power photovoltaic energy-storage system | |
| CN204967698U (en) | Power supply device for internet of things | |
| CN202353294U (en) | Off-grid power supply system | |
| CN202678984U (en) | Solar photovoltaic system applied to grid-connected power supply of large-size civil buildings | |
| CN205070576U (en) | Hybrid -type circuit topology structure | |
| CN202121531U (en) | Solar energy photovoltaic power supply system | |
| CN109494860B (en) | Online interactive solar grid-connected and off-grid energy storage three-in-one all-in-one machine and control method | |
| CN105186672A (en) | Hybrid circuit topology structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20170104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |