CN210629278U - Rectifier bridge of brushless direct current generator - Google Patents
Rectifier bridge of brushless direct current generator Download PDFInfo
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- CN210629278U CN210629278U CN201921404803.8U CN201921404803U CN210629278U CN 210629278 U CN210629278 U CN 210629278U CN 201921404803 U CN201921404803 U CN 201921404803U CN 210629278 U CN210629278 U CN 210629278U
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Abstract
A rectifier bridge of a brushless direct current generator comprises a rectifier bridge heat dissipation plate, rectifier diodes, a current conducting plate and a rectifier bridge insulating pad; the rectifier bridge heat dissipation plate is connected with the rectifier diodes through the conductive plates to form a half-bridge rectifier plate assembly; the full-bridge rectification structure is composed of two groups of same half-bridge rectification plate assemblies; the rectifier bridge insulating pad is additionally arranged between the rectifier bridge heat dissipation plate and the generator end cover; the whole bridge flow heat dissipation plate is arranged on the end cover of the generator. The utility model is used for rectify the three-phase alternating current of three-phase brushless DC motor output into the direct current, overcome traditional rectifier bridge arrangement's structure complicacy, shortcoming with high costs. The length of the rectifying and cooling plate can be increased or decreased to adjust the cooling capacity according to different powers of the generator, so that different requirements can be matched. Simultaneously the utility model discloses simple structure, convenient the maintenance, low in manufacturing cost can overcome traditional rectifier bridge equipment and should not maintain, shortcoming that manufacturing cost is high.
Description
Technical Field
The utility model relates to a semiconductor device field especially relates to a brushless DC generator rectifier bridge.
Background
Brushless DC generators on airplanes are all provided with a rectifier bridge DC module which is used for rectifying AC generated by the generators into DC and providing the DC for airplane power grids. The existing rectifier bridge module is restricted and mounted, and has the problems of heat dissipation and the like. Generally, the packaging method is used for packaging the whole module, and has the disadvantages of complex structure, poor universality and high cost. Meanwhile, the modularized rectifier bridge needs to be placed in a controller, and a large cold plate needs to be arranged to dissipate heat of the controller. Therefore, the rectifier bridge is packaged into the whole module, which is not beneficial to the serialization of products, and generators with different powers and different shapes need to be provided with different rectifier modules; and the heat dissipation cold plate is arranged, so that the volume and the weight of the whole generator system are improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a brushless DC generator rectifier bridge to solve the aforementioned problem that exists among the prior art.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a brushless DC generator rectifier bridge comprises a rectifier bridge heat dissipation plate 8, a rectifier diode 6, a current conducting plate 7 and a rectifier bridge insulating pad 11; the rectifier bridge heat dissipation plate 8 is connected with the rectifier diode 6 through the conductive plate 7 to form a half-bridge rectifier plate assembly; the full-bridge rectification structure is composed of two groups of same half-bridge rectification plate assemblies; the rectifier bridge insulating pad 11 is additionally arranged between the rectifier bridge heat dissipation plate 8 and the generator end cover 1; the rectifier bridge heat dissipation plate 8 is installed on the generator end cover 1.
Preferably, the two conducting electrodes of the rectifier diode 6 are an anode and a cathode respectively, the anode is the binding post 4, and the cathode is the threaded post 5.
Preferably, heat dissipation fins are arranged around the rectifier bridge heat dissipation plate 8, and the length of each heat dissipation fin is longer than that of the plate body of the rectifier diode 6.
Preferably, the rectifier bridge heat dissipation plate 8 is provided with a threaded hole corresponding to the threaded post 5 on the rectifier diode 6; the rectifier diode 6, the conductive plate 7 and the rectifier bridge heat dissipation plate 8 are connected through the threaded column 5 and the threaded hole.
Preferably, the conductive plate 7 is a copper sheet structure.
Preferably, the binding screw 10 is fixed to the conductive plate 7 by a binding nut 9 through the rectifier bridge heat sink plate 8. Made of insulating material
Preferably, the rectifier bridge insulating pad 11 is a sheet structure made of an insulating material.
Preferably, the rectifier bridge heat dissipation plate 8 is connected to the generator end cover 1 through a connection screw 13 and a hexagon nut 14.
Preferably, the screw insulating sleeve 12 is sleeved outside the connecting screw 10, and the screw insulating sleeve 12 is made of an insulating material.
The utility model has the advantages that: the utility model discloses install rectifier bridge and generator together, utilize the air volume of generator to dispel the heat to the rectifier bridge to reduce the volume and the weight of whole power generation system, reduce the complexity of generator rectifier bridge, reduce cost, overcome the complicated structure of traditional rectifier bridge arrangement mode, shortcoming with high costs; the length of the rectifying and cooling plate can be increased or decreased to adjust the cooling capacity according to different powers of the generator, so that different requirements can be matched. Simultaneously the utility model discloses simple structure, convenient the maintenance, low in manufacturing cost can overcome traditional rectifier bridge equipment and should not maintain, shortcoming that manufacturing cost is high.
Drawings
FIG. 1 is a schematic front view of a structure;
FIG. 2 is a structural isometric view;
FIG. 3 is a schematic diagram of a rectifier diode;
FIG. 4 is a schematic structural view;
FIG. 5 is an assembly schematic;
fig. 6 is a schematic generator ventilation flow direction.
In the figure: 1-generator end cover, 2-negative pole rectifier plate component, 3-positive pole rectifier plate component, 4-wiring terminal, 5-spiral column, 6-rectifier diode, 7-current conducting plate, 8-rectifier heat dissipation plate, 9-wiring nut, 10-wiring screw, 11-rectifier bridge insulating pad, 12-screw insulating sleeve, 13-connecting screw, 14-hexagon nut
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.
The utility model discloses a brushless DC generator rectifier bridge, wherein three-phase outputs A, B and C of a generator are respectively connected with the anode and the cathode of the rectifier bridge; the conductive shell of the rectifier diode is connected with the rectifier bridge heat dissipation plate through threads. Meanwhile, the electricity of the rectifier diode is connected with the output end through the conducting plate, and finally the positive electrode and the negative electrode of the rectified direct current output are formed. The rectifier bridge of the brushless direct current generator comprises a rectifier bridge of the brushless direct current generator, and the rectifier bridge comprises a rectifier bridge heat dissipation plate 8, a rectifier diode 6, a current conducting plate 7 and a rectifier bridge insulating pad 11; the rectifier bridge heat dissipation plate 8 is connected with the rectifier diode 6 through a conductive plate 7 to form a half-bridge rectifier plate assembly, two groups of same half-bridge rectifier plate assemblies can form a complete full-bridge rectifier structure, and each half-bridge rectifier plate assembly comprises an anode rectifier plate assembly 2 and a cathode rectifier plate assembly 3; the rectifier bridge heat dissipation plate 8 is connected with the generator end cover 1 through the rectifier bridge insulating pad 11; the two conducting poles of the rectifier diode 6 are respectively as follows: the anode is a binding post 4, and the cathode is a threaded post 5; radiating fins are arranged on the periphery of the rectifier bridge radiating plate 8, and the length of each radiating fin is longer than that of the plate body part of each rectifier diode; the rectifier bridge heat dissipation plate 8 is provided with a threaded hole corresponding to the threaded column 5 on the rectifier diode 6; the conductive plate 7 is a copper sheet structure; the rectifier diode 6, the conductive plate 7 and the rectifier bridge heat dissipation plate 8 are connected through the threaded column 5 and the threaded hole.
The binding screw 10 passes through the rectifier bridge heat dissipation plate 8 and is fixed with the conductive plate 7 by a binding nut 9. The rectifier bridge insulating pad 11 is made of insulating materials and is of a sheet structure made of the insulating materials; the rectifier bridge heat dissipation plate 8 is connected with the generator end cover 1 through a connecting screw 13 and a hexagon nut 14; the screw insulating sleeve 12 is sleeved outside the connecting screw 13, and the screw insulating sleeve 12 is made of insulating materials.
Above do the utility model discloses a brushless DC generator rectifier bridge's concrete structure, its effect in the course of the work is:
when the generator is under the condition of load output, the three-phase output of the alternating current A, B and C of the generator is welded to the anode terminal 4 of the rectifier diode 6 through a lead, the current flowing through the rectifier diode 6 is large, more heat is generated on the rectifier diode 6, and the heat generated by the rectifier diode 6 is conducted to the rectifier bridge heat dissipation plate 8; the heat dissipation fins for increasing the heat dissipation area are arranged on the periphery of the rectifier bridge heat dissipation plate 8 so as to improve the heat dissipation effect of the rectifier bridge heat dissipation plate 8; for generators with different powers, the heat dissipation capacity can be adjusted by adjusting the total length of the rectifier bridge heat dissipation plate 8; meanwhile, as the heat dissipation fan is arranged in the generator, the fan can generate a certain negative pressure in the generator, so that the external air of the generator enters the generator through the air inlet of the end cover to dissipate heat of internal components of the generator, and the air generated by the generator flows through the heat dissipation fins of the rectifier bridge heat dissipation plate 8, thereby further increasing the heat dissipation capacity of the rectifier bridge heat dissipation plate 8; the conductive plate 7 additionally arranged between the rectifier diode 6 and the rectifier bridge heat dissipation plate 8 reduces contact resistance between the rectifier diode 6 and the rectifier bridge heat dissipation plate 8, further reduces loss caused by the contact resistance, and further reduces heat generated by the rectifier diode 6. Finally, the temperature of the rectifying diode 6 is controlled within an allowable range.
The rectifier bridge insulating pad 12 is additionally arranged between the rectifier bridge heat dissipation plate 8 and the generator end cover 1, so that the generator end cover 1 is prevented from being directly contacted with the rectifier heat dissipation plate 8 to be electrified, and the structure ensures the insulating property of the rectifier bridge heat dissipation plate 8 and the generator end cover 1; when the rectifier bridge heat dissipation plate 8 is installed, the heat dissipation bridge rectifier plate 8 is installed on the generator end cover 1 through a connecting screw 13 and a hexagon nut 14, and a screw insulation pad 12 made of an insulation material is sleeved outside the connecting screw 13. So as to realize good insulation between the connecting screw 13 and the rectifier bridge heat dissipation plate 8.
Through adopting the utility model discloses an above-mentioned technical scheme has obtained following profitable effect:
the utility model discloses install rectifier bridge and generator together, utilize the air volume of generator to dispel the heat to the rectifier bridge to reduce the volume and the weight of whole power generation system, reduce the complexity of generator rectifier bridge, reduce cost, overcome the complicated structure of traditional rectifier bridge arrangement mode, shortcoming with high costs; the length of the rectifying and cooling plate can be increased or decreased to adjust the cooling capacity according to different powers of the generator, so that different requirements can be matched. Simultaneously the utility model discloses simple structure, convenient the maintenance, low in manufacturing cost can overcome traditional rectifier bridge equipment and should not maintain, shortcoming that manufacturing cost is high.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A rectifier bridge of a brushless direct current generator is characterized by comprising a rectifier bridge heat dissipation plate, rectifier diodes, a current conducting plate and a rectifier bridge insulating pad; the rectifier bridge heat dissipation plate is connected with the rectifier diodes through the conductive plates to form a half-bridge rectifier plate assembly; the full-bridge rectification structure is composed of two groups of same half-bridge rectification plate assemblies; the rectifier bridge insulating pad is additionally arranged between the rectifier bridge heat dissipation plate and the generator end cover; the rectifier bridge heat dissipation plate is installed on the generator end cover.
2. The bridge of claim 1, wherein the rectifier diodes are electrically conducting anodes and cathodes, respectively, the anodes being terminals and the cathodes being threaded terminals.
3. The bridge rectifier of claim 1, wherein the rectifier bridge heat sink has heat dissipating fins disposed around the heat dissipating plate, and the heat dissipating fins are longer than the plate portions of the rectifier diodes.
4. The rectifier bridge of claim 2 or 3, wherein the rectifier bridge heat sink has a threaded hole corresponding to the threaded post of the rectifier diode; the rectifier diode, the conductive plate and the rectifier bridge heat dissipation plate are connected through the threaded column and the threaded hole.
5. The bridge of claim 1, wherein the conductive plates are copper sheet structures.
6. The bridge rectifier of claim 1 wherein a binding screw is secured to the conductive plate by a binding nut through the bridge rectifier heat sink.
7. The bridge rectifier of claim 1 wherein the bridge rectifier insulation pad is a sheet structure of insulating material.
8. The bridge rectifier of claim 1 wherein the bridge rectifier plate is attached to the generator end cap by a connection screw and a hex nut.
9. The bridge of claim 8, wherein the screw insulating sleeve is sleeved outside the connection screw, and the screw insulating sleeve is made of an insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921404803.8U CN210629278U (en) | 2019-08-27 | 2019-08-27 | Rectifier bridge of brushless direct current generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921404803.8U CN210629278U (en) | 2019-08-27 | 2019-08-27 | Rectifier bridge of brushless direct current generator |
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| Publication Number | Publication Date |
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| CN210629278U true CN210629278U (en) | 2020-05-26 |
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| CN201921404803.8U Active CN210629278U (en) | 2019-08-27 | 2019-08-27 | Rectifier bridge of brushless direct current generator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564513A (en) * | 2020-11-13 | 2021-03-26 | 北京曙光航空电气有限责任公司 | Embedded rectifier bridge |
| CN114496947A (en) * | 2022-01-06 | 2022-05-13 | 泗阳群鑫电子有限公司 | Rectifier diode and manufacturing method thereof |
| CN116345801A (en) * | 2023-04-06 | 2023-06-27 | 江苏绿能汽配科技有限公司 | Rectifier bridge support of automobile generator |
-
2019
- 2019-08-27 CN CN201921404803.8U patent/CN210629278U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564513A (en) * | 2020-11-13 | 2021-03-26 | 北京曙光航空电气有限责任公司 | Embedded rectifier bridge |
| CN114496947A (en) * | 2022-01-06 | 2022-05-13 | 泗阳群鑫电子有限公司 | Rectifier diode and manufacturing method thereof |
| CN114496947B (en) * | 2022-01-06 | 2023-02-10 | 泗阳群鑫电子有限公司 | Rectifier diode and manufacturing method thereof |
| CN116345801A (en) * | 2023-04-06 | 2023-06-27 | 江苏绿能汽配科技有限公司 | Rectifier bridge support of automobile generator |
| CN116345801B (en) * | 2023-04-06 | 2023-10-27 | 江苏绿能汽配科技有限公司 | Rectifier bridge support of automobile generator |
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