CN209963961U - High-power inverter for motor home - Google Patents
High-power inverter for motor home Download PDFInfo
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- CN209963961U CN209963961U CN201920764333.XU CN201920764333U CN209963961U CN 209963961 U CN209963961 U CN 209963961U CN 201920764333 U CN201920764333 U CN 201920764333U CN 209963961 U CN209963961 U CN 209963961U
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- 238000001914 filtration Methods 0.000 claims abstract description 29
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 238000009499 grossing Methods 0.000 claims description 3
- 238000013021 overheating Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000003079 width control Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to a high-power dc-to-ac converter for car as a house, a serial communication port, including casing and the circuit board that sets up in the casing, casing one end is for supplying the input that battery voltage inserts, and the other end is for the output of exporting behind the direct current conversion sinusoidal alternating current, the one end that the casing corresponds the input is equipped with radiator fan and power wiring stake, and the one end that corresponds the output is equipped with control switch and alternating current output socket, be provided with power main circuit, rectifier element, PWM modulation controller and filtering magnetic ring on the circuit board, the electric current inserts through power wiring stake and steps up through the high frequency, bridge contravariant, rectification, filtering are exported by alternating current output socket at last, have improved the overall stability and the thermal diffusivity of.
Description
Technical Field
The utility model relates to an inverter technical field, concretely relates to high-power inverter for car as a house.
Background
With the continuous improvement of living standards of people, consumption levels, consumption concepts and consumption requirements of people are greatly changed, one of the performances is that the specific gravity of people on the consumption expense of traveling is higher and higher, more and more people select to drive a car as a house to travel, the car as a house on wheels has two functions of a house and a car, but the car is also a car and is a movable car type with essential basic facilities at home. The motor home integrates clothes, food, live and walk, and realizes fashion products of travel in life and life in travel. The caravan is provided with a plurality of electric appliances used in daily life, electric elements of the electric appliances are integrated in an electric appliance box, and in daily use, a 12V battery of the caravan only can enable small-power electric appliances to normally work, such as 12V LED lamps, ventilating fans and televisions.
The inverter is a power conversion device, converts direct current into alternating current, can be used for various equipment and provides required alternating current power for various equipment, the frequency and the voltage of the alternating current power output by the inverter can be adjusted at will, but the starting current of the existing inverter is 3-9 times of the normal working current when the existing inverter meets high-power electric appliances such as an air conditioner and a refrigerator, and higher requirements on the aspects of heat dissipation and stability of the existing inverter are provided for ensuring the safety and comfort of electricity consumption of a motor home.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to solve the above-mentioned deficiencies of the prior art,
the high-power inverter for the motor home is good in heat dissipation performance, high in power and good in stability.
In order to achieve the above purpose, the utility model provides a following technical scheme: a high-power inverter for a motor home, comprising: one end of the shell is an input end for connecting the voltage of the storage battery, the other end of the shell is an output end for converting direct current into sine alternating current and outputting the sine alternating current, a heat dissipation fan and a power supply wiring pile are arranged at one end of the shell corresponding to the input end, and a control switch and an alternating current output socket are arranged at one end of the shell corresponding to the output end; the circuit board is arranged in the shell and is fixedly connected with the shell through screws; the power main circuit is arranged on the circuit board, is connected with the power supply wiring pile, comprises a power tube and a high-frequency transformer and is used for converting direct current accessed by the power supply wiring pile into high-frequency alternating current high voltage; the rectifier element is arranged on the circuit board, connected with the high-frequency transformer and used for rectifying the received high-frequency alternating current high voltage into high-frequency direct current high voltage; the PWM modulation controller is arranged on the circuit board, is connected with the rectifying element and is used for modulating the received high-frequency direct-current high-voltage pulse width into sine alternating-current voltage; and the filtering magnetic ring is arranged on the circuit board, one end of the filtering magnetic ring is connected with the PWM modulation controller, and the other end of the filtering magnetic ring is connected with the alternating current output socket and used for filtering the received sinusoidal alternating current voltage and then releasing the filtered sinusoidal alternating current voltage to the alternating current output socket for power supply.
By adopting the technical scheme, the inverter of the utility model comprises a shell, an input end and an output end are arranged at two ends of the shell, an external storage battery is connected with 12V direct current from a power terminal of the input end and passes through at least 4 groups of power tubes on a circuit board, the power tubes are connected with a high-frequency inverter through a lead to form a power main circuit to carry out full-bridge inversion, the power tubes are symmetrically and symmetrically fixed on the circuit board in a balanced manner, firstly, the symmetry of the working state of the power tubes can be ensured, the phenomenon of unilateral heating can not occur, in addition, the current density of a tin stacking layer on the reverse side of the circuit board can be reduced, the interference caused by unbalanced current is greatly reduced, when the 12V direct current of the storage battery is expanded through the power tubes and then passes through a low-voltage winding of a high-voltage distribution transformer, high-voltage alternating voltage can be induced on the high-voltage side, then the high frequency AC voltage is rectified by a rectifying element to be rectified into high frequency DC voltage, then the received high frequency DC voltage is subjected to pulse width modulation by a PWM modulation controller, the output voltage is controlled by changing the pulse width, the output frequency is controlled by changing the period, the width or the duty ratio of the pulse can be adjusted, the voltage and the frequency can be changed coordinately by adopting a proper control method, the purpose of controlling the charging current can be achieved by adjusting the period of the PWM and the duty ratio of the PWM, the output waveform can be very close to a sine wave, finally the sine AC subjected to the pulse width modulation is filtered by a filtering magnetic ring, high frequency oblique waves are filtered, the stable sine AC is output from an AC output socket, the reliability and the stability of an inverter system are improved by integrally arranging two radiating fans which can support the power of 3000W to the maximum and are arranged at the input end, the heat that can be effectual produces the power tube releases, has improved the thermal diffusivity of dc-to-ac converter, provides safe, stable high-power inverter for the power supply system of car as a house.
The high-power inverter for the motor home can be further configured as follows: the circuit board is provided with a first dense-tooth radiator at one end corresponding to the input end, the power tubes are symmetrically arranged at two ends of the first dense-tooth radiator, a second dense-tooth radiator is arranged at one end corresponding to the output end of the circuit board, and the rectifying element and the PWM modulation controller are uniformly distributed at two ends of the second dense-tooth radiator.
By adopting the technical scheme, the power tube, the rectifying element and the PWM modulation controller can generate heat when working, when the heat is excessive, the current density of the tin layer stacked on the reverse side of the circuit board is influenced, the power tube is symmetrically distributed at two ends of the first dense-tooth radiator, and the rectifying element and the PWM modulation controller are uniformly distributed at two ends of the second dense-tooth radiator, so that the contact area between the power tube, the rectifying element and the PWM modulation controller as well as the first and second dense-tooth radiators is increased, the heat conduction is enhanced, the heat radiation performance is improved, the symmetry of the working state of the power tube is realized, the unilateral heating phenomenon can not occur, the current density of the tin layer stacked on the reverse side of the circuit board can be reduced, the interference caused by unbalanced current is greatly reduced, all components on the circuit board are connected with the dense-tooth radiator, and the structure is firmer.
The high-power inverter for the motor home can be further configured as follows: at least 8 direct current capacitors for smoothing and filtering direct current output voltage are arranged between the power supply wiring pile and the power tube.
By adopting the technical scheme, when 12V direct current is input into the power tube through the power supply wiring terminal, the direct current capacitor provides a low impedance channel for the system in a wide frequency band range by utilizing the characteristics that the voltage of the capacitor can not change suddenly and the capacitance reactance of the capacitor is reduced along with the increase of the frequency, so that the alternating current impedance of a direct current bus is reduced, the direct current output voltage is subjected to smooth filtering and then is guided to the power main circuit, and the stability of the inverter is improved.
The high-power inverter for the motor home can be further configured as follows: and 4 filter capacitors for filtering sine wave alternating current burrs are arranged between the filter magnetic ring and the PWM modulation controller.
By adopting the technical scheme, the filtering magnetic ring and the PWM modulation controller are provided with 4 filtering capacitors, so that filtering of burrs in the sine alternating current output from the PWM modulation controller can be effectively filtered, and the stability of the inverter is improved.
The high-power inverter for the motor home can be further configured as follows: the power main circuit also comprises an over-temperature protection module for preventing the inverter from overheating.
By adopting the technical scheme, the power tube and the high-frequency transformer can generate high heat when working at high power, and when the over-temperature protection module detects that the temperature of the power main circuit is overhigh, the current in the power main circuit is conducted to the PWM modulation controller, and then the pulse width is changed through pulse width control, so that the temperature of the power main circuit is reduced, and the use safety of the inverter is ensured.
The high-power inverter for the motor home can be further configured as follows: and a short-circuit protection module for preventing the short circuit of the inverter is arranged between the filtering magnetic ring and the alternating current output socket.
By adopting the technical scheme, in the inverter inverting process, the short-circuit protection module is arranged between the filtering magnetic ring and the alternating current output socket, so that after the inverter is short-circuited, the PWM modulation controller adjusts the output pulse width through PWM pulse width control to avoid electric shock, a built-in fuse can be fused if necessary, and the use safety of the inverter is ensured.
The high-power inverter for the motor home can be further configured as follows: and one end of the shell corresponding to the output end is provided with a remote controller wiring port for remotely controlling the inverter to work.
By adopting the technical scheme, for conveniently and remotely controlling the inverter, the remote controller wiring port which can be connected with the remote controller is arranged at one end of the shell of the inverter, which corresponds to the output end, so that the inverter is convenient to use.
The high-power inverter for the motor home can be further configured as follows: and one end of the shell corresponding to the output end is provided with a voltage display for displaying the sine alternating-current voltage in real time.
By adopting the technical scheme, the voltage value of the output voltage is conveniently watched, and the voltage display for displaying the sine alternating voltage in real time is arranged at one end of the shell corresponding to the output end, so that the use by a user is facilitated.
The high-power inverter for the motor home can be further configured as follows: and one end of the shell corresponding to the output end is provided with a USB wiring port.
Adopt above-mentioned technical scheme, the casing corresponds the one end USB wiring mouth of output, and the removal electrical apparatus that conveniently forgets to carry the head that charges passes through USB wiring mouth and charges.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Fig. 3 is a schematic diagram of an internal structure of an embodiment of the present invention.
Fig. 4 is a process schematic diagram of an embodiment of the present invention.
Fig. 5 is a circuit diagram of an embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 5, a high power inverter for a motor home, includes: the battery charger comprises a shell 1, wherein one end of the shell 1 is an input end 11 for voltage access of a storage battery, the other end of the shell 1 is an output end 12 for converting direct current into sine alternating current and outputting the sine alternating current, a heat radiation fan 111 and a power supply wiring pile 112 are arranged at one end of the shell 1 corresponding to the input end 11, and a control switch 121 and an alternating current output socket 122 are arranged at one end of the shell corresponding to the output end 12; the circuit board 2 is arranged in the shell 1 and is fixedly connected with the shell 1 through screws; the power main circuit 3 is arranged on the circuit board 2, is connected with the power supply wiring pile 112, comprises a power tube 31 and a high-frequency transformer 32, and is used for converting direct current accessed by the power supply wiring pile 112 into high-frequency alternating current high voltage; a rectifier element 4, which is arranged on the circuit board 2, is connected with the high-frequency transformer 32, and is used for rectifying the received high-frequency alternating-current high voltage into high-frequency direct-current high voltage; the PWM modulation controller 5 is arranged on the circuit board 2, is connected with the rectifying element 4, and is used for modulating the received high-frequency direct-current high-voltage pulse width into sine alternating-current voltage; a filtering magnetic ring 6, disposed on the circuit board 2, one end of which is connected to the PWM modulation controller 5, the other end of which is connected to the ac output socket 122 for filtering the received sinusoidal ac voltage and then discharging the filtered sinusoidal ac voltage to the ac output socket 122 for supplying power, wherein one end of the circuit board 2 corresponding to the input end 11 is provided with a first dense-teeth heat sink 7, the power tubes 31 are symmetrically disposed at two ends of the first dense-teeth heat sink 7, one end of the circuit board 2 corresponding to the output end 12 is provided with a second dense-teeth heat sink 8, the rectifying element 4 and the PWM modulation controller 5 are uniformly distributed at two ends of the second dense-teeth heat sink 8, at least 8 dc capacitors 21 for smoothing filtering the dc output voltage are disposed between the power connection stud 112 and the power tubes 31, and 4 filtering capacitors 22 for filtering out the sine wave ac burrs are disposed between the filtering magnetic ring 6 and the PWM modulation controller 5, the power main circuit 3 further comprises an over-temperature protection module a for preventing the inverter from being overheated, a short-circuit protection module B for preventing the inverter from being short-circuited is arranged between the filtering magnetic ring 6 and the alternating current output socket 122, a remote controller wiring port 123 for remotely controlling the inverter to work is arranged at one end of the shell 1 corresponding to the output end 12, a voltage display 124 for displaying sine alternating current voltage in real time is arranged at one end of the shell 1 corresponding to the output end 12, and a USB wiring port 125 is arranged at one end of the shell 1 corresponding to the output end 12.
Claims (9)
1. A high-power inverter for a motor home, comprising:
one end of the shell is an input end for connecting the voltage of the storage battery, the other end of the shell is an output end for converting direct current into sine alternating current and outputting the sine alternating current, a heat dissipation fan and a power supply wiring pile are arranged at one end of the shell corresponding to the input end, and a control switch and an alternating current output socket are arranged at one end of the shell corresponding to the output end;
the circuit board is arranged in the shell and is fixedly connected with the shell through screws;
the power main circuit is arranged on the circuit board, is connected with the power supply wiring pile, comprises a power tube and a high-frequency transformer and is used for converting direct current accessed by the power supply wiring pile into high-frequency alternating current high voltage;
the rectifier element is arranged on the circuit board, connected with the high-frequency transformer and used for rectifying the received high-frequency alternating current high voltage into high-frequency direct current high voltage;
the PWM modulation controller is arranged on the circuit board, is connected with the rectifying element and is used for modulating the received high-frequency direct-current high-voltage pulse width into sine alternating-current voltage;
and the filtering magnetic ring is arranged on the circuit board, one end of the filtering magnetic ring is connected with the PWM modulation controller, and the other end of the filtering magnetic ring is connected with the alternating current output socket and used for filtering the received sinusoidal alternating current voltage and then releasing the filtered sinusoidal alternating current voltage to the alternating current output socket for power supply.
2. The high-power inverter for the motor home as claimed in claim 1, wherein: the circuit board is provided with a first dense-tooth radiator at one end corresponding to the input end, the power tubes are symmetrically arranged at two ends of the first dense-tooth radiator, a second dense-tooth radiator is arranged at one end corresponding to the output end of the circuit board, and the rectifying element and the PWM modulation controller are uniformly distributed at two ends of the second dense-tooth radiator.
3. The high-power inverter for the motor home as claimed in claim 1 or 2, wherein: at least 8 direct current capacitors for smoothing and filtering direct current output voltage are arranged between the power supply wiring pile and the power tube.
4. The high-power inverter for the motor home as claimed in claim 1 or 2, wherein: and 4 filter capacitors for filtering sine wave alternating current burrs are arranged between the filter magnetic ring and the PWM modulation controller.
5. The high-power inverter for the motor home as claimed in claim 1 or 2, wherein: the power main circuit also comprises an over-temperature protection module for preventing the inverter from overheating.
6. The high-power inverter for the motor home as claimed in claim 1 or 2, wherein: and a short-circuit protection module for preventing the short circuit of the inverter is arranged between the filtering magnetic ring and the alternating current output socket.
7. The high-power inverter for the motor home as claimed in claim 1, wherein: and one end of the shell corresponding to the output end is provided with a remote controller wiring port for remotely controlling the inverter to work.
8. The high-power inverter for the motor home as claimed in claim 1, wherein: and one end of the shell corresponding to the output end is provided with a voltage display for displaying the sine alternating-current voltage in real time.
9. The high-power inverter for the motor home as claimed in claim 1, wherein: and one end of the shell corresponding to the output end is provided with a USB wiring port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920764333.XU CN209963961U (en) | 2019-05-24 | 2019-05-24 | High-power inverter for motor home |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920764333.XU CN209963961U (en) | 2019-05-24 | 2019-05-24 | High-power inverter for motor home |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209963961U true CN209963961U (en) | 2020-01-17 |
Family
ID=69246568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920764333.XU Active CN209963961U (en) | 2019-05-24 | 2019-05-24 | High-power inverter for motor home |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209963961U (en) |
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2019
- 2019-05-24 CN CN201920764333.XU patent/CN209963961U/en active Active
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