CN211744327U - Aviation high-efficiency shielding direct-current conversion power supply - Google Patents
Aviation high-efficiency shielding direct-current conversion power supply Download PDFInfo
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- CN211744327U CN211744327U CN202020485404.5U CN202020485404U CN211744327U CN 211744327 U CN211744327 U CN 211744327U CN 202020485404 U CN202020485404 U CN 202020485404U CN 211744327 U CN211744327 U CN 211744327U
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- filter unit
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Abstract
The utility model discloses a high-efficient shielding DC transform power supply of aviation, the load simulator comprises a case, the machine case includes the bottom plate, controls curb plate, front and back panel and apron, the bottom plate is controlled curb plate, front and back panel and apron by aviation aluminium member milling system, input and output terminal are installed respectively to the front and back panel, the bottom plate is controlled the cavity that curb plate and front and back panel constitute and is inlayed and install modular circuit structure, including two way input filter unit, wherein input filter unit lug connection output terminal all the way, another way input filter unit connects multichannel DC-DC transform unit and output filter unit behind the direct current surge suppression unit, output filter unit connection output terminal. The utility model discloses a power volume can effectively be reduced in the modularized design, and the machine case adopts aviation aluminium alloy to make, and intensity is high, light in weight.
Description
Technical Field
The utility model relates to the technical field of power, especially indicate a high-efficient shielding direct current transform power of aviation.
Background
The DC/DC converter converts a fixed DC voltage into a variable DC voltage, and the technology is widely applied to the stepless speed change and control of the trolley buses, subway trains and electric vehicles, and simultaneously ensures that the control obtains the performances of stable acceleration and quick response and also receives the effect of saving electric energy. The direct current chopper is used for replacing a rheostat, so that the electric energy can be saved by 20-30 percent. The direct current chopper not only can play a role in voltage regulation (switching power supply), but also can play a role in effectively suppressing harmonic current noise on the side of a power grid. The existing direct current conversion power supply has large volume, low strength and light weight.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high-efficient shielding DC conversion power of aviation has solved among the prior art DC conversion power volume great, and intensity is high inadequately, light problem inadequately of weight.
The technical scheme of the utility model is realized like this:
the utility model provides a high-efficient shielding DC conversion power supply of aviation, includes quick-witted case, quick-witted case includes the bottom plate, controls curb plate, front and back panel and apron, the bottom plate is controlled curb plate, front and back panel and apron by aviation aluminium member milling system, input and output terminal are installed respectively to the front and back panel, the bottom plate is controlled the cavity that curb plate and front and back panel constitute and is inlayed and install modular circuit structure, including two way input filter unit, wherein input filter unit lug connection output terminal all the way, another way input filter unit connects multichannel DC-DC transform unit and output filter unit behind the direct current surge suppression unit, output filter unit connection output terminal.
As a preferred embodiment of the present invention, the rated input voltage of the output terminal is 28Vdc, and the input voltage variation range is 18-36 Vdc.
As a preferred embodiment of the present invention, the DC surge suppressing unit is connected to the 6-way DC-DC converting unit, and outputs voltages of ± 5V, ± 15V, 12V and 5V.
As a preferred embodiment of the present invention, the output end of the DC-DC conversion unit is connected to a common mode inductor.
As a preferred embodiment of the present invention, the inside of the case is further provided with a heat sink.
The beneficial effects of the utility model reside in that: the modularized design is adopted, the size of the power supply can be effectively reduced, and the case is made of aviation aluminum parts, so that the strength is high and the weight is light.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic block diagram of an embodiment of the aviation high-efficiency shielding dc conversion power supply of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the high-efficiency shielding dc conversion power supply for aviation.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1 and fig. 2, the utility model provides an aviation high-efficient shielding dc conversion power supply, including the machine case, the machine case includes bottom plate, left and right side board, front and back panel and apron, and bottom plate, left and right side board, front and back panel and apron are milled by aviation aluminium spare, and input and output terminal are installed respectively to front and back panel, and the cavity that bottom plate, left and right side board and front and back panel constitute is inlayed and is installed modular circuit structure, including two way input filter unit, wherein input filter unit direct connection output terminal all the way, direct output rated voltage; the other input filter unit is connected with the multi-channel DC-DC conversion unit and the output filter unit after passing through the DC surge suppression unit, and the output filter unit is connected with the output terminal and outputs the multi-channel converted DC power supply voltage.
The rated input voltage of the output terminal is 28Vdc, and the input voltage variation range is 18-36 Vdc. The direct current surge suppression unit is connected with the 6 DC-DC conversion units and outputs voltages of +/-5V, +/-15V, 12V and 5V. Wherein the direct 28V voltage of output of input filter unit of the same kind, the utility model discloses exportable 7 way voltages, total output power are 160 ~ 370W, electrically adopt the modularized design, and more than 85% conversion efficiency passes through PCB layout wiring, can further reduce the power volume, structurally adopts aviation aluminium spare to mill the system, and intensity is high, light in weight. The utility model discloses an keep apart between electric modular structure's input and the input. Specifically, the DC-DC conversion unit takes a Buck voltage reduction conversion circuit as a core, takes a single chip microcomputer with a PWM (pulse width modulation) driving pin as a main control chip, and carries out voltage reduction conversion on the filtered input voltage, and the specific model can be selected by a technician in a self-defined mode according to user requirements.
The DC-DC conversion unit comprises a controllable switch circuit, and a control chip (a single chip microcomputer, the type of which can be selected and matched by technicians) controls whether the DC-DC conversion unit works or not.
In order to improve the power output quality, the utility model discloses be connected with common mode inductance at DC-DC conversion unit's output. The input terminal and the output terminal are also provided with common-mode inductors for reducing common-mode interference and reducing input and output voltage ripples. The input filter unit can adopt multistage filter circuit, can effectively restrain the power supply to the interference of electric wire netting, specifically the utility model discloses an in the embodiment can adopt two-stage filter circuit. The common mode inductor adopts a single-wire winding mode.
The utility model discloses an overall arrangement characteristics do, whole distribution wiring arranges according to the signal flow direction, does not have the mutual interference of input and output, and the adjacent input/output terminal of common mode inductance realizes the good electromagnetic compatibility effect of input/output and electric wire netting or equipment, and the great device direct mount of volume and weight increases the fastness of installation and reduces power center, and transform unit etc. generates heat on great device direct mount and the radiator.
In order to reduce the volume, the utility model discloses choose for use that electrical parameter is the same, small components and parts, under the prerequisite that satisfies the requirement, suitably reduce input/output capacitance's capacity for further reduce the volume.
The power interface of the utility model adopts flexible wires to be led out. The heat generated by the module can be dissipated through the metal substrate at the bottom of the module, the substrate is electrically isolated from the heating elements within the module, but the heat of the substrate is transferred to the surrounding environment by dissipating the heat within the module through the thermally conductive insulating material, causing the temperature of the substrate to be less than the maximum rated temperature. There are three basic ways of transferring thermal energy from a high temperature region to a low temperature region, radiation, conduction and convection. Radiation: electromagnetic transfer of heat between two objects at different temperatures; conduction: the transfer of heat through a solid medium; convection: heat is transferred through the fluid medium.
The utility model discloses an on average no trouble work 5500 hours.
The utility model discloses an assembly method does: the mounted axial lead component is mounted in a manner of clinging to the printed board and is fixed by a proper amount of silicon rubber; when the pin of the power device is bent, the distance from the packaging body is not less than 5mm, a PVC insulating pad is padded at the bottom with the insulating requirement, and a radiator is additionally arranged or heat-conducting silicone grease is coated at the bottom with the heat-radiating requirement; the separated integrated circuit is directly welded without adopting an indirect mounting mode of an IC seat; the magnetic element is subjected to paint dipping treatment, dried, marked and qualified in insulation test, and a special bakelite plate is adopted for compression joint during installation; and the structural member and the printed board are rigidly connected by adopting multiple points to reduce the influence of vibration and impact.
The beneficial effects of the utility model reside in that: the modularized design is adopted, the size of the power supply can be effectively reduced, and the case is made of aviation aluminum parts, so that the strength is high and the weight is light.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a high-efficient shielding DC conversion power of aviation, includes quick-witted case, quick-witted case includes the bottom plate, controls the curb plate, around panel and apron, its characterized in that: the bottom plate, control the curb plate, around panel and apron by aviation aluminium member milling, input and output terminal are installed respectively to the front and back panel, inlay in the cavity that the bottom plate constitutes with front and back panel about, curb plate, and the bottom plate, wherein the input filter unit lug connection output terminal is gone all the way, and another way input filter unit connects multichannel DC-DC transform unit and output filter unit behind the direct current surge suppression unit, output filter unit connection output terminal.
2. The aviation high-efficiency shielding direct-current conversion power supply according to claim 1, characterized in that: the rated input voltage of the output terminal is 28Vdc, and the input voltage variation range is 18-36 Vdc.
3. The aviation high-efficiency shielding direct-current conversion power supply according to claim 1, characterized in that: the direct current surge suppression unit is connected with the 6 DC-DC conversion units and outputs voltages of +/-5V, +/-15V, 12V and 5V.
4. The aviation high-efficiency shielding direct-current conversion power supply according to claim 1 or 3, characterized in that: and the output end of the DC-DC conversion unit is connected with a common mode inductor.
5. The aviation high-efficiency shielding direct-current conversion power supply according to claim 1, characterized in that: and a radiator is also arranged in the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020485404.5U CN211744327U (en) | 2020-04-03 | 2020-04-03 | Aviation high-efficiency shielding direct-current conversion power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020485404.5U CN211744327U (en) | 2020-04-03 | 2020-04-03 | Aviation high-efficiency shielding direct-current conversion power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211744327U true CN211744327U (en) | 2020-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020485404.5U Active CN211744327U (en) | 2020-04-03 | 2020-04-03 | Aviation high-efficiency shielding direct-current conversion power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211744327U (en) |
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2020
- 2020-04-03 CN CN202020485404.5U patent/CN211744327U/en active Active
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