CN205178897U - Dc -to -ac converter and power mainboard thereof - Google Patents
Dc -to -ac converter and power mainboard thereof Download PDFInfo
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- CN205178897U CN205178897U CN201520977231.8U CN201520977231U CN205178897U CN 205178897 U CN205178897 U CN 205178897U CN 201520977231 U CN201520977231 U CN 201520977231U CN 205178897 U CN205178897 U CN 205178897U
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Abstract
The utility model provides a top layer is used for placing the plug -in components components and parts, and the bottom is used for placing chip component of dc -to -ac converter and power mainboard thereof, the power mainboard to reduce the complexity of production and processing, machining efficiency improves production. The power mainboard includes auxiliary power circuit, full -bridge step up drive circuit, step up transformer, AC -DC circuit, DC -AC circuit and input/output circuit, auxiliary power circuit is used for for the power supply of power mainboard, step up transformer and full -bridge step up drive circuit to be connected for, adjusts voltage the full -bridge under stepping up drive circuit's drive, the AC -DC circuit is used for exporting the ac inversion of input for the direct current, the DC -AC circuit is used for exporting the DC conversion of input for the alternating current, the input/output circuit is used for input, output current and signal. All components and parts of power mainboard are directly arranged on the PCB of power mainboard board, rather than the form that adopts small -size riser to components and parts occupy the problem that cubical space is big, production machining efficiency hangs down on solving the power mainboard.
Description
Technical field
The application relates to electric and electronic technical field, is specifically related to a kind of inverter and power mainboard thereof.
Background technology
Current inverter, especially high-power high-frequency isolate two-way inverter, and its power mainboard all adopts the form of printed circuit board (PCB).When the structure of design power mainboard, in order to increase cabling space, improving power density, the circuit of little function can be concentrated in addition and being placed on above small-sized riser, afterwards riser being arranged on power mainboard.
As shown in Figure 1, accessory power supply feedback loop 101, input and output EMI (ElectromagneticInterference, electromagnetic interference) the little function circuit such as loop concentrates and is placed on above small-sized riser, and small-sized riser is arranged on power amplifier board 10 again, with bring to power density.
The power mainboard structure of this form, small-sized riser needs to take larger solid space, is unfavorable for the heat radiation of power mainboard.In addition, small-sized riser and power mainboard need separately production and processing, and therefore, production and processing efficiency is low, indirectly improves production and processing cost.
Summary of the invention
The application provides a kind of inverter and power mainboard thereof, solves components and parts on power mainboard and takies that solid space is large, the inefficient problem of production and processing.
According to the first aspect of the application, this application provides a kind of power mainboard of inverter, the top layer of described power mainboard is for placing plug-in components, and bottom is for placing SMD components; Described power mainboard comprises auxiliary power circuit, full-bridge boost drive circuit, step-up transformer, AC-DC circuit, DC-AC circuit and imput output circuit; Auxiliary power circuit is used for for power main board power supply; Step-up transformer is connected with full-bridge boost drive circuit, for regulating voltage under the driving of full-bridge boost drive circuit; AC-DC circuit is used for the alternating current of input being converted to direct current and exports; DC-AC circuit is used for the direct current of input being converted to alternating current and exports; Imput output circuit is used for input, output current and signal.
In one embodiment, described power mainboard also comprises the cell anti-reverse connection circuit be connected with imput output circuit, for when imput output circuit is connected with battery, prevents the positive and negative electrode wiring error of battery.
In one embodiment, described power mainboard also comprises at least one and is connected to bus electrolytic capacitor on power mainboard bus, for stable busbar voltage.
In one embodiment, described power mainboard also comprises the bus filter inductance be connected to for filtering on power mainboard bus.
In one embodiment, described power mainboard also comprises the battery-end electrochemical capacitor being connected to cell input terminal in imput output circuit, for the output voltage of stable cell end.
In one embodiment, described power mainboard also comprises the inversion rear class filter inductance be connected to for filtering on DC-AC circuit output end.
In one embodiment, described power mainboard also comprises and being connected on DC-AC circuit output end for square wave being converted to sinusoidal wave inversion rear class filter capacitor.
In one embodiment, described power mainboard, in the DC side of described power mainboard, when electric current is greater than preset value, adopts copper sheet to substitute pcb board cabling.
In one embodiment, described power mainboard also comprises the first radiator, the second radiator, the 3rd radiator, the first fan and the second fan; First radiator is placed on AC-DC circuit and DC-AC circuit, and the second radiator is placed on full-bridge boost drive circuit, and the 3rd radiator is placed on cell anti-reverse connection circuit; First fan is placed on before the first radiator, and the second fan is placed on before the second radiator and the 3rd radiator.
According to the second aspect of the application, present invention also provides a kind of inverter, comprise housing and any one power mainboard above-mentioned, described power mainboard is arranged in housing.
In the inverter that the application provides and power mainboard thereof, the top layer of power mainboard is for placing plug-in components, and bottom, for placing SMD components, to reduce the complexity of production and processing, improves production and processing efficiency.Power mainboard comprises auxiliary power circuit, full-bridge boost drive circuit, step-up transformer, AC-DC circuit, DC-AC circuit and imput output circuit; Auxiliary power circuit is used for for power main board power supply; Step-up transformer is connected with full-bridge boost drive circuit, for regulating voltage under the driving of full-bridge boost drive circuit; AC-DC circuit is used for the alternating current of input being converted to direct current and exports; DC-AC circuit is used for the direct current of input being converted to alternating current and exports; Imput output circuit is used for input, output current and signal.All components and parts of power mainboard are directly arranged on the pcb board of power mainboard, instead of adopt the form of small-sized riser, take that solid space is large, the inefficient problem of production and processing to solve components and parts on power mainboard.
Accompanying drawing explanation
Fig. 1 is that in inverter, small-sized riser is arranged on the structural representation on power mainboard;
Fig. 2 is the structural representation of inverter in a kind of embodiment of the application;
Fig. 3 is the structural representation of power mainboard in a kind of embodiment inverter of the application;
Fig. 4 is the schematic layout pattern of the radiator of a kind of embodiment power of the application mainboard;
Fig. 5 is the structural representation of radiator in a kind of embodiment power of the application mainboard.
Embodiment
By reference to the accompanying drawings the application is described in further detail below by embodiment.
Please refer to Fig. 2, present embodiments provide a kind of inverter, comprise housing and be arranged on the power mainboard 30 in housing 20.
Concrete, housing 20 is provided with the connection wire 201,202 for connecting battery positive and negative electrode, connection wire 201,202 is connected to the battery terminal connections of power mainboard 30.Housing 20 is also provided with the through hole 203,204 for the fan on fixed placement power mainboard 30.Housing 20 is also provided with LCD plate 205, for showing the working condition of inverter.Housing 20 is also provided with various outside terminal, such as electrical network input 206, output loading end 207, PV input 208 etc.Just carried out simple explanation to the structure of housing 20 in the present embodiment, the concrete structure of housing 20 can design according to the actual requirements, or adopts any one feasible structure of the prior art.
Please refer to Fig. 3, in the present embodiment, power mainboard 30 comprise auxiliary power circuit 3., full-bridge boost drive circuit 2., step-up transformer 6., AC-DC circuit 8., DC-AC circuit 9. and imput output circuit
auxiliary power circuit is 3. for being power main board power supply; 2. 6. step-up transformer be connected with full-bridge boost drive circuit, for regulating voltage under the driving 2. of full-bridge boost drive circuit; 8. AC-DC circuit exports for the alternating current of input being converted to direct current; 9. DC-AC circuit exports for the direct current of input being converted to alternating current; Imput output circuit
for input, output current and signal.Imput output circuit
input, the signal exported comprise control signal and feedback signal.Wherein, the top layer of power mainboard 30 is for placing plug-in components, and bottom is for placing SMD components.
In the present embodiment, the top layer of power mainboard 30 is for placing plug-in components, and bottom, for placing SMD components, can reduce the complexity of production and processing, improves production and processing efficiency.And, all components and parts of power mainboard 30 are directly arranged on the pcb board of power mainboard 30, instead of adopt the form of small-sized riser, solve components and parts on power mainboard 30 and take solid space greatly, the inefficient problem of the production and processing that small-sized riser and pcb board need production and processing respectively to cause.
Concrete, imput output circuit
for be connected with outside (such as: electrical network, load end), wherein be in series with a relay respectively at electrical network L end, electrical network N end, inversion output loading end and the total output of inversion, the relay adhesive when meeting pre-conditioned, otherwise disconnect, thus control the conducting of each circuit.Y capacitance is set between output loading end, electrical network end, the earth, plays the effect avoiding EMI (electromagnetic interference, ElectromagneticInterference).Electrical network L end to the earth, electrical network N end to the earth, electrical network L/N between piezo-resistance is set, to play the effect preventing surge impact.
In the present embodiment, 1. power mainboard 30 also comprises the cell anti-reverse connection circuit that is connected with imput output circuit, at imput output circuit
when being connected with battery, prevent the positive and negative electrode wiring error of battery.
Power mainboard 30 also comprises at least one and is connected to bus electrolytic capacitor on power mainboard bus 4., for stable busbar voltage.4. bus electrolytic capacitor is connected to bus, when script supply of electric power (such as: battery, civil power) normal supply DC-to-AC converter, and the energy stored for future use; When the unstable power in the external world or when interrupting suddenly, 4. the laid in energy of bus electrolytic capacitor just can emergency service to inverter, busbar voltage is tended towards stability, and there will not be larger fluctuation, make the output of inverter energy normal table.
Power mainboard 30 also comprises and to be connected on power mainboard bus for the bus filter inductance of filtering 5..
Power mainboard 30 also comprises and is connected to imput output circuit
the battery-end electrochemical capacitor of middle cell input terminal 7., for the output voltage of stable cell end.Its operation principle and bus electrolytic capacitor are 4. identical.
Power mainboard 30 also comprise be connected to DC-AC circuit 9. on output for the inversion rear class filter inductance of filtering 10..
Power mainboard 30 also comprise be connected to DC-AC circuit 9. on output for square wave being converted to sinusoidal wave inversion rear class filter capacitor
For the power mainboard of inverter, can be divided into DC side and AC, at DC side (direct current input and DC output side), the electric current that some circuit passes through is comparatively large, such as, 1. 2. locate with full-bridge boost drive circuit at cell anti-reverse connection circuit.In order to adapt to the big current of DC side, often need thickness and the width of Copper Foil when the increase pcb board number of plies and cabling, to improve the overcurrent capability of pcb board.But this mode can increase complexity during pcb board production and processing on the one hand, thus increases production and processing cost; There is the large shortcoming of caloric value on the other hand.
In the present embodiment, preferably, in the DC side of power mainboard 30, when electric current is greater than preset value, copper sheet is adopted to substitute pcb board cabling.This mode can reduce complexity during pcb board production and processing, thus reduces production and processing cost, and caloric value is less.Concrete, above-mentioned preset value can be arranged according to the real work situation of inverter, such as, be set to 100A.
Please refer to Fig. 4, in the present embodiment, power mainboard 30 also comprises the first radiator 401, second radiator 402, the 3rd radiator 403, first fan and the second fan; First radiator 401 is placed on AC-DC circuit and 8. 9. goes up with DC-AC circuit, and the second radiator 402 is placed on full-bridge boost drive circuit and 2. goes up, and the 3rd radiator 403 is placed on cell anti-reverse connection circuit and 1. goes up; First fan is placed on before the first radiator 401, and the second fan is placed on before the second radiator 402 and the 3rd radiator 403.
In the present embodiment, 1. cell anti-reverse connection circuit is used alone a radiator, and 2. full-bridge boost drive circuit uses a radiator, and these two radiators all belong to direct current side.9. 8. AC-DC circuit share a radiator with DC-AC circuit, and this radiator belongs to interchange side.The power mainboard of whole inverter arranges two DC side fans, and fan is respectively placed on the front end (referring to one end that fan is placed on radiator and needs exhausting heat radiation) of radiator, is beneficial to the heat radiation of inverter.It should be noted that, in Fig. 4, do not go out the first fan and the second fan, in the actual design process of power mainboard, can as required, the first fan and the second fan be placed in place, to ensure its heat sinking function.As shown in Figure 2, the first fan and the second fan need the through hole 203,204 in corresponding inverter case 20 respectively.
Please refer to Fig. 5, be the structural representation of radiator (the first radiator 401, second radiator 402, the 3rd radiator 403), it comprises fin 501, first insulating trip 502, first copper sheet 503, second copper sheet 504 and the second insulating trip 505.First insulating trip 502 and the second insulating trip 505 can be epoxy resin board insulating trips.It should be noted that, Fig. 5 illustrate only a kind of structure of radiator, in a particular embodiment, can select in prior art that any one is applicable to the heat spreader structures of inverter power mainboard.
Certainly, unimpeded in order to fan exhausting wind path, the layout for the components and parts on power mainboard needs rationally, avoids because larger-size components and parts stop exhausting wind path, thus reduces radiating effect.
Above content is the further description done the application in conjunction with concrete execution mode, can not assert that the concrete enforcement of the application is confined to these explanations.For the application person of an ordinary skill in the technical field, under the prerequisite not departing from the present application design, some simple deduction or replace can also be made.
Claims (10)
1. a power mainboard for inverter, is characterized in that, the top layer of described power mainboard is for placing plug-in components, and bottom is for placing SMD components; Described power mainboard comprises auxiliary power circuit, full-bridge boost drive circuit, step-up transformer, AC-DC circuit, DC-AC circuit and imput output circuit; Auxiliary power circuit is used for for power main board power supply; Step-up transformer is connected with full-bridge boost drive circuit, for regulating voltage under the driving of full-bridge boost drive circuit; AC-DC circuit is used for the alternating current of input being converted to direct current and exports; DC-AC circuit is used for the direct current of input being converted to alternating current and exports; Imput output circuit is used for input, output current and signal.
2. power mainboard as claimed in claim 1, is characterized in that, also comprise the cell anti-reverse connection circuit be connected with imput output circuit, for when imput output circuit is connected with battery, prevent the positive and negative electrode wiring error of battery.
3. power mainboard as claimed in claim 2, is characterized in that, also comprises at least one and is connected to bus electrolytic capacitor on power mainboard bus, for stable busbar voltage.
4. power mainboard as claimed in claim 3, is characterized in that, also comprise the bus filter inductance be connected to for filtering on power mainboard bus.
5. power mainboard as claimed in claim 1, is characterized in that, also comprise the battery-end electrochemical capacitor being connected to cell input terminal in imput output circuit, for the output voltage of stable cell end.
6. power mainboard as claimed in claim 1, is characterized in that, also comprise the inversion rear class filter inductance be connected to for filtering on DC-AC circuit output end.
7. power mainboard as claimed in claim 6, is characterized in that, also comprises and being connected on DC-AC circuit output end for square wave being converted to sinusoidal wave inversion rear class filter capacitor.
8. power mainboard as claimed in claim 1, is characterized in that, in the DC side of described power mainboard, when electric current is greater than preset value, adopts copper sheet to substitute pcb board cabling.
9. power mainboard as claimed in claim 2, is characterized in that, also comprise the first radiator, the second radiator, the 3rd radiator, the first fan and the second fan; First radiator is placed on AC-DC circuit and DC-AC circuit, and the second radiator is placed on full-bridge boost drive circuit, and the 3rd radiator is placed on cell anti-reverse connection circuit; First fan is placed on before the first radiator, and the second fan is placed on before the second radiator and the 3rd radiator.
10. an inverter, is characterized in that, comprise housing and the power mainboard as described in claim 1-9 any one, described power mainboard is arranged in housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977231.8U CN205178897U (en) | 2015-11-30 | 2015-11-30 | Dc -to -ac converter and power mainboard thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977231.8U CN205178897U (en) | 2015-11-30 | 2015-11-30 | Dc -to -ac converter and power mainboard thereof |
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| Publication Number | Publication Date |
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| CN205178897U true CN205178897U (en) | 2016-04-20 |
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| CN201520977231.8U Active CN205178897U (en) | 2015-11-30 | 2015-11-30 | Dc -to -ac converter and power mainboard thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112152474A (en) * | 2020-09-25 | 2020-12-29 | 科华恒盛股份有限公司 | Inverter and power control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112152474A (en) * | 2020-09-25 | 2020-12-29 | 科华恒盛股份有限公司 | Inverter and power control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Meike Power Co. Ltd. Assignor: SHENZHEN MUST ENERGY TECHNOLOGY CO., LTD. Contract record no.: 2016440020082 Denomination of utility model: Dc -to -ac converter and power mainboard thereof Granted publication date: 20160420 License type: Common License Record date: 20160907 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220520 Address after: 528000 floor 1, floor 2, floor 3, floor 4, floor 5, floor 7, floor 9 and floor 10, building 8, No. 115, Zhangcha 1st Road, Chancheng District, Foshan City, Guangdong Province (residence declaration) Patentee after: Meishile (Guangdong) New Energy Technology Co.,Ltd. Address before: 518000 4th and 5th floors, building 11, Yusheng Industrial Zone, No. 467, Xixiang section, 107 National Road, Xixiang street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN MUST ENERGY TECHNOLOGY Co.,Ltd. |