CN202940745U - Photovoltaic inverter - Google Patents
Photovoltaic inverter Download PDFInfo
- Publication number
- CN202940745U CN202940745U CN 201220624950 CN201220624950U CN202940745U CN 202940745 U CN202940745 U CN 202940745U CN 201220624950 CN201220624950 CN 201220624950 CN 201220624950 U CN201220624950 U CN 201220624950U CN 202940745 U CN202940745 U CN 202940745U
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- Prior art keywords
- photovoltaic
- radiator
- components
- photovoltaic inverter
- power device
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- 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
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Abstract
The utility model discloses a photovoltaic inverter. The photovoltaic inverter comprises components, a capacitance assembly which is connected with the components, wherein the capacitance assembly comprises multiple welding needle lead out type electrolytic capacitors which are welded on a PCB. The photovoltaic inverter further comprises a radiator. Multiple components are provided and are installed on the top of the radiator and are fixed along edges of an air inlet of the radiator. The multiple welding needle lead out type electrolytic capacitors are positioned right in front of the air inlet of the radiator. According to the photovoltaic inverter, the welding needle lead out electrolytic capacitors welded on the PCB are adopted in the capacitance assembly; with the adoption of the capacitance assembly which is welded in such a manner, no copper bars are needed between the capacitors for connection; the time needed for assembling the photovoltaic inverter is shorter than the time needed for assembling a photovoltaic inverter which uses screw assembled capacitors, and thus assembly efficiency of the photovoltaic inverter is improved.
Description
Technical field
The utility model relates to electrical equipment technical field, relates in particular to a kind of photovoltaic DC-to-AC converter.
Background technology
Along with China is actively pushing forward industrialization and modernization energy innovation system, energy development faces severe form and challenge.Developing and extend the extensive access that little electrical network can fully promote distributed power source and regenerative resource, realizing the highly reliable supply to load various energy resources form, is a kind of effective means that realizes active power distribution network, is that traditional electrical network is to the intelligent grid transition.Photovoltaic generation has also become an important disseminate technology of energy-saving and emission-reduction as the core of little electrical network.Photovoltaic DC-to-AC converter as the key device of photovoltaic generation, is to utilize the effect that turns on and off of semiconductor power device direct current to be converted to the converting means of alternating current.The capacitance component that present photovoltaic DC-to-AC converter is installed comprises a plurality of bolts installation alminium electrolytic condensers, is called for short spiral shell dress electric capacity.As shown in Figure 1, spiral shell dress electric capacity can satisfy the requirement of high-power photovoltaic inverter, is bolted on together, is electrically connected to power device.
A plurality of spiral shells dress electric capacity of capacitance component need insulation isolation each other, and fix with bolt, after the both positive and negative polarity of each spiral shell dress electric capacity need to connect by copper bar, then are connected the components and parts connection with photovoltaic DC-to-AC converter.This fixed form, the time of assembling capacitance component is longer, affects the packaging efficiency of photovoltaic DC-to-AC converter.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of photovoltaic DC-to-AC converter, and is long with the structure set-up time that solves above-mentioned photovoltaic DC-to-AC converter, affects the problem of the packaging efficiency of photovoltaic DC-to-AC converter.
To achieve these goals, the present invention adopts following technical scheme to be achieved:
A kind of photovoltaic DC-to-AC converter comprises components and parts, and with the capacitance component that described components and parts are connected, described capacitance component comprises a plurality of capillary extraction electrochemical capacitors that are welded on pcb board.
Preferably, on described pcb board, copper bar is installed, is connected with described components and parts by described copper bar.
Preferably, also comprise: radiator; The quantity of described components and parts is a plurality of, is arranged on the top of described radiator, fixes along the limit of the air inlet of described radiator.
Preferably, described a plurality of capillary extraction electrochemical capacitor is positioned at the air inlet dead ahead of described radiator.
Preferably, described components and parts comprise:
Rectifier bridge, the first power device, the second power device and pass devices.
Preferably, the interval between described the first power device and the second power device is not less than 50mm.
Preferably, described the first power device and the second power device are IGBT.
Preferably, between described a plurality of capillary extraction electrochemical capacitors, the interval is not less than 10mm.
With respect to prior art, the utlity model has following advantage: the capacitance component in the utility model adopts the capillary extraction electrochemical capacitor that is welded on PCB, adopt the capacitance component of this welding manner, the time that the photovoltaic DC-to-AC converter of assembling adopts is short with respect to the built-up time of spiral shell dress electric capacity, can improve the packaging efficiency of photovoltaic DC-to-AC converter.
Than the present the most widely used spiral shell dress electrochemical capacitor interconnected scheme of copper bar, this programme has adopted capillary extraction electric capacity to form the structure of capacitance component, avoided because the installation of using the copper bar connection to bring between spiral shell dress electrochemical capacitor is inconvenient, and have more excellent electric property, thereby more be conducive to the useful life of the heat radiation raising electric capacity of electric capacity.
Description of drawings
Fig. 1 is the structure chart of conventional art photovoltaic DC-to-AC converter;
Fig. 2 is the heat spreader structures figure of the utility model specific embodiment photovoltaic DC-to-AC converter;
Fig. 3 is the structure chart of photovoltaic DC-to-AC converter and capacitance component in the utility model specific embodiment.
Embodiment
For clearly demonstrating the technical scheme in the utility model, the below provides preferred embodiment and is described with reference to the accompanying drawings.
Referring to Fig. 3, the photovoltaic DC-to-AC converter in embodiment comprises: components and parts, the capacitance component 31 that is connected with described components and parts, described capacitance component 31 comprise a plurality of capillary extraction electrochemical capacitors that are welded on pcb board.
Preferably, be welded with copper bar on described pcb board, be connected with described components and parts by described copper bar.
Preferably, referring to Fig. 3, photovoltaic DC-to-AC converter also comprises: radiator 4;
The quantity of described components and parts is a plurality of, is arranged on the top of described radiator 4, and referring to Fig. 2, components and parts are fixed along the limit of the air inlet of described radiator 4.Air inlet is positioned at the side that radiator is grown.
Adopt the fixed form in this fixed form and Fig. 1 that larger difference is arranged, components and parts in Fig. 1 are fixed along the bearing of trend in the air channel of radiator, at air-flow during through the air channel, take away the heat of the device at top, air channel, causing can be higher than the gas flow temperature near the air inlet of air duct position near the gas flow temperature of duct outlet position, thereby causes near the heat radiation of the components and parts at top, duct outlet position relatively poor.
Adopt the mounting means of the Fig. 2 in embodiment, each components and parts are fixed along the limit of air inlet, and after the air-flow warp, the heat of taking away can not affect other components and parts.
Preferably, referring to Fig. 3, described a plurality of capillary extraction electrochemical capacitors are positioned at the air inlet dead ahead of described radiator 4.When air-flow process air inlet, can take away the heat of the capillary extraction electrochemical capacitor on pcb board.Although the heat of electric capacity is not high, through the cooling of air-flow, the useful life that can effectively improve electric capacity, thereby the life-span of prolongation photovoltaic DC-to-AC converter.
Preferably, described components and parts comprise:
Rectifier bridge 1, the first power device 21, the second power device 22 and pass devices 3.Pcb board by copper bar and the first power device 21 be connected power device 22 and be connected.
Preferably, the interval between described the first power device 21 and the second power device 22 is not less than 50mm.
Preferably, described the first power device 21 and the second power device 22 are IGBT.
Preferably, between described a plurality of capillary extraction electrochemical capacitors, the interval is not less than 10mm.
Preferably, the technical parameter of the electric capacity in the capacitance component in embodiment 31 and quantity must meet the following conditions:
One, capacitance component is withstand voltage satisfies the photovoltaic DC-to-AC converter requirement.
Two, the ratio of the total ripple current of capacitance component and photovoltaic DC-to-AC converter output current is not less than 0.4.
This programme has adopted capillary extraction electric capacity to form the structure of capacitance component, and the installation inconvenience of avoiding the larger spiral shell dress electric capacity of volume to bring due to capillary extraction electrochemical capacitor small volume, thereby is conducive to the useful life that the heat radiation of electric capacity improves electric capacity.
The radiator top of this result scheme is equipped with transversely arranged a plurality of components and parts, and the air channel longitudinal extension of described radiator, and its bearing of trend is mutually vertical with the orientation of described components and parts.This structural design can effectively guarantee the components and parts heat radiation equalization at radiator top, thereby makes the overall performance of photovoltaic DC-to-AC converter internal component stable, and radiating efficiency is higher.
For the photovoltaic DC-to-AC converter device of setting forth in embodiment of the present utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. a photovoltaic DC-to-AC converter, comprise components and parts, and the capacitance component with described components and parts are connected is characterized in that, described capacitance component comprises a plurality of capillary extraction electrochemical capacitors that are welded on pcb board.
2. photovoltaic DC-to-AC converter according to claim 1, is characterized in that, is welded with copper bar on described pcb board, is connected with described components and parts by described copper bar.
3. photovoltaic DC-to-AC converter according to claim 1, is characterized in that, also comprises: radiator;
The quantity of described components and parts is a plurality of, is arranged on the top of described radiator, fixes along the limit of the air inlet of described radiator.
4. photovoltaic DC-to-AC converter according to claim 3, is characterized in that, described a plurality of capillary extraction electrochemical capacitors are positioned at the air inlet dead ahead of described radiator.
5. photovoltaic DC-to-AC converter according to claim 3, is characterized in that, described components and parts comprise:
Rectifier bridge, the first power device, the second power device and pass devices.
6. photovoltaic DC-to-AC converter according to claim 5, is characterized in that, the interval between described the first power device and the second power device is not less than 50mm.
7. photovoltaic DC-to-AC converter according to claim 5, is characterized in that, described the first power device and the second power device are IGBT.
8. photovoltaic DC-to-AC converter according to claim 2, is characterized in that, between described a plurality of capillary extraction electrochemical capacitors, the interval is not less than 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220624950 CN202940745U (en) | 2012-11-22 | 2012-11-22 | Photovoltaic inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220624950 CN202940745U (en) | 2012-11-22 | 2012-11-22 | Photovoltaic inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940745U true CN202940745U (en) | 2013-05-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220624950 Expired - Fee Related CN202940745U (en) | 2012-11-22 | 2012-11-22 | Photovoltaic inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940745U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112586100A (en) * | 2018-08-09 | 2021-03-30 | 艾思玛太阳能技术股份公司 | Intermediate circuit device and inverter |
-
2012
- 2012-11-22 CN CN 201220624950 patent/CN202940745U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112586100A (en) * | 2018-08-09 | 2021-03-30 | 艾思玛太阳能技术股份公司 | Intermediate circuit device and inverter |
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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: 20130515 Termination date: 20211122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |