CN109348670B - Power module structure - Google Patents
Power module structure Download PDFInfo
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- CN109348670B CN109348670B CN201811053966.6A CN201811053966A CN109348670B CN 109348670 B CN109348670 B CN 109348670B CN 201811053966 A CN201811053966 A CN 201811053966A CN 109348670 B CN109348670 B CN 109348670B
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- power
- power module
- heat dissipation
- module
- dissipation frame
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention belongs to the technical field of avionics, and particularly relates to a power module structure. The power module is arranged in the data management processor, receives a main power supply input by the airplane, provides various power supply protection, and simultaneously provides secondary power supply for other functional board cards in the data management processor. The power module has high output power and high power loss, and is required to reduce self heat productivity to the maximum extent, so that the power module is prevented from being damaged due to overheating under the condition of long-time work. Therefore, the power module is required to realize the established function, and meanwhile, the power devices in the power module need to be reasonably arranged, so that the heat loss generated by the power module is conducted and radiated to the maximum extent, and the working temperature of the whole power module is maintained to a safe level. In the structural configuration, the power module has enough strength and rigidity to keep the stable performance of internal parts under different environmental states, and the power module needs to ensure convenient installation, disassembly and maintenance and reliable structure.
Description
Technical Field
The invention belongs to the technical field of avionics, and particularly relates to a power module structure.
Background
The data management processor collects sensor data, bus data, audio data and video data of the airplane in real time and sends the collected data to a fixed storage device. The power supply module is arranged in the data management processor, receives a 28V direct-current power supply input by the airplane, provides various power supply protection, simultaneously provides secondary power supply for other functional board cards in the data management processor, and the total power of the output power supplied by the power supply module reaches 200W.
Therefore, the power module is required to reduce self heat productivity to the maximum extent, and the power module is prevented from being damaged due to overheating under the condition of long-time work. Therefore, the power module is required to realize the established function, and meanwhile, the power devices in the power module need to be reasonably arranged, so that the heat loss generated by the power module is conducted and radiated to the maximum extent, and the working temperature of the whole power module is maintained to a safe level. In the structural configuration, the power module has enough strength and rigidity to keep the stable performance of internal parts under different environmental states, and the power module needs to ensure convenient installation, disassembly and maintenance and reliable structure.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the power module reduces self heating value to the maximum extent, and avoids overheating damage to the power module under the long-time working condition.
The technical scheme of the invention is as follows:
the utility model provides a power module structure, includes power module heat dissipation frame, power control module and heating panel 16, its characterized in that: an energy storage capacitor mounting circular sinking platform 1 is designed on the power module heat dissipation frame and used for mounting and fixing the energy storage capacitor; a power DC/DC device mounting through hole 6 is designed on the power module heat dissipation frame, and a power DC/DC device 17 is fixed on the power module heat dissipation frame by using the mounting through hole 6; the power module heat dissipation frame is provided with a boss 10 for assembling the power module heat dissipation frame with the power control module and assembling the power module heat dissipation frame with the heat dissipation plate, so that the local strength of the power module heat dissipation frame is increased, and the vibration resistance of the power module is improved.
The energy storage capacitor is fixed in the circular sinking platform 1 on the power module heat dissipation frame through the circular insulating gasket 2, the annular insulating sleeve 3, the insulating pressing plate 4 and the capacitor cover plate 5, and insulation between the energy storage capacitor and the power module heat dissipation frame is guaranteed.
A wire passing groove 7 is designed on the heat dissipation frame of the power supply module, and a wire harness formed by welding a wire with the power DC/DC device and the energy storage capacitor is welded with a corresponding welding wire hole on the power supply control module through the wire passing groove 7.
The power module heat dissipation frame is provided with a bendable wire clamp 11, a wire harness formed by welding a power DC/DC device and an energy storage capacitor, and when wires are arranged in the power module heat dissipation frame, the wire harness can be fixed by using the bendable wire clamp 11.
The two sides of the heat dissipation frame of the power module are provided with the pulling devices 8, so that the power module can be pulled out and maintained in the case integrally.
Locking devices 9 are arranged on two sides of the heat dissipation frame of the power supply module, so that the power supply module can be conveniently locked and fixed and heat can be conveniently transferred after being installed in a case;
the power control module is formed by bonding a printed board 12 and a heat dissipation cold plate 13, and heat source devices on the power control module conduct and dissipate heat through the heat dissipation cold plate 13.
A wire welding area 14 is designed on the power supply control module, and a wire harness formed by welding a power DC/DC device and an energy storage capacitor on a heat dissipation frame of the power supply module is welded with a corresponding pad hole in the wire welding area 14; the power control module is provided with a board-level connector 15, and an external electrical interface is provided for the whole power module through the board-level connector;
the heat dissipation plate 16 is designed with parallel heat dissipation grooves to increase the heat conduction area of the heat dissipation plate.
The power module heat dissipation frame and the heat dissipation plate 16 are formed by integrally milling 2A12 aluminum alloy in a T4 state, and a heat dissipation cold plate is bonded with a printed board through heat conduction insulating glue.
The invention has the beneficial effects that: by adopting the power module structure, the heat dissipation of the heat source device in the power module, the installation and fixation of the heavy device and the process realization of the whole power module are fully optimized, and the power module structure has the advantages of strong operability, high reliability, high space utilization rate, small volume and convenient maintenance.
Drawings
Fig. 1, 2 and 3 are schematic structural views of a heat dissipation frame of a power module according to the present invention;
FIG. 4 and FIG. 5 are schematic structural diagrams of a power control module according to the present invention;
FIG. 6 is a schematic diagram of an assembly structure of a power module heat dissipation frame and a power control module according to the present invention;
FIG. 7 is a schematic view of an assembly structure of the heat sink plate of the present invention;
fig. 8 is a schematic structural diagram of the power module of the present invention mounted to a chassis.
Detailed Description
The power module structure of the invention is explained in detail with the attached drawings:
the main bearing structural member of the power module consists of a power module heat dissipation frame, and the power module heat dissipation frame is formed by integrally milling 2A12 aluminum alloy in a T4 state. The 2A12 aluminum alloy material has high strength and good heat-conducting property. The sheet material is integrally milled and formed, so that tolerance accumulation caused by assembly of a plurality of parts can be reduced, and the integral assembly performance and the sealing performance of the product are improved.
The energy storage capacitor mounting circular sinking platform 1 is designed on the power module radiating frame, and a circular insulating gasket 2, an annular insulating sleeve 3 and an insulating pressing plate 4 are designed for the energy storage capacitor in order to ensure the insulation between the energy storage capacitor and the power module radiating frame. In the process of installing and fixing the capacitor, the round insulating gasket 2, the annular insulating sleeve 3 and the insulating pressing plate 4 are respectively placed at the bottom, the side face and the top of the capacitor. Waist-shaped holes are designed on the insulating pressing plate 4 and the capacitor cover plate 5 and are used for leading out two positive and negative electrode pins of a capacitor and welding a lead. And the capacitor is installed and fixed in the capacitor installation round sinking platform 1 of the metal heat dissipation frame by using the capacitor cover plate 5.
The power module radiating frame is provided with a through hole 6 for installing a power DC/DC device, and the power DC/DC device (17) can be fixed on the radiating frame by utilizing the through hole 6. The power DC/DC device is fully contacted with the heat dissipation frame, so that the heat conduction impedance of the power DC/DC device is reduced, and the working temperature of the power DC/DC device is reduced.
A wire passing groove 7 is designed on the heat dissipation frame of the power supply module, and the electrical connection between the power DC/DC device and the energy storage capacitor is realized by welding a wire on a pin of the device and welding the wire with a corresponding wire welding hole on the power supply control module after passing through the wire passing groove 7 in a wiring mode.
A bendable wire clamp 11 is designed on the power module heat dissipation frame, and after the power DC/DC device and the energy storage capacitor welding lead form a wire, the wire harness can be fixed by the bendable wire clamp 11 when wiring is conducted in the power module heat dissipation frame.
The two sides of the heat dissipation frame of the power module are provided with the pulling devices 8, so that the power module can be pulled up and maintained integrally after being installed in the case.
Locking devices 9 are designed on two sides of the heat dissipation frame of the power module, so that the power module can be conveniently locked and fixed after being installed in the case. After the power module is installed in the case and locked and fixed, the locking device 9 is in close contact with the case, and the heat of the power module is transmitted to the case through the locking device, so that the thermal impedance of the whole power module is further reduced.
The power module heat dissipation frame is provided with a plurality of bosses 10, and the bosses 10 provide a plurality of screw mounting holes for assembling the power module heat dissipation frame with the power control module and assembling the power module heat dissipation frame with the heat dissipation plate 16. Meanwhile, the boss 10 can increase the local strength of the heat dissipation frame of the power module, and improve the vibration resistance of the whole power module.
The structural schematic diagrams of the heat dissipation frame of the SCQ-36 power module of a certain product are shown in fig. 1, fig. 2 and fig. 3.
The power control module is formed by bonding a printed board 12 and a heat dissipation cold plate 13. The heat dissipation cold plate 13 is formed by integrally milling 2A12 aluminum alloy in a T4 state, and is bonded with the printed board through heat conduction insulating glue. The heat source device on the power control module is directly attached to the heat dissipation cold plate 13, so that the thermal impedance of the heat source device is reduced, and the working temperature of the heat source device is reduced.
A wire welding area 14 is designed on the power supply control module, and after a wire harness formed by a power DC/DC device and an energy storage capacitor welding wire on the heat dissipation frame of the power supply module is connected from the wire passing groove 7, the other end of the welding wire is welded on a welding wire hole corresponding to the wire welding area 14 of the power supply control module.
The power control module is designed with a board-level connector 15, and an external electrical interface is provided for the whole power module through the board-level connector. After the power module is installed in the chassis, the board-level connector 15 of the power module is butted with the corresponding connector of the motherboard in the chassis.
The schematic structure of the power control module of a product SCQ-36 is shown in fig. 4 and 5.
The power supply module heat dissipation frame and the power supply control module are assembled by fasteners, and the cold plate of the power supply control module is in close contact with the power supply module heat dissipation frame, so that heat of a heat source device on the power supply control module is conducted to the power supply module heat dissipation frame, and the working temperature of the power supply control module is reduced.
After the heat dissipation frame of the SCQ-36 power module of a certain product and the power control module are assembled, the schematic diagram of the assembly structure is shown in fig. 6.
The power module is provided with a heat dissipation plate 16, and the heat dissipation plate is provided with parallel heat dissipation grooves, so that the heat conduction area of the heat dissipation plate is increased by the parallel heat dissipation grooves, and the heat dissipation of the whole power module is facilitated. The heat dissipation plate is fixed with the heat dissipation frame of the power module through screws.
Fig. 7 shows an assembly structure diagram of an SCQ-36 power module of a certain product after a heat dissipation plate is installed.
Fig. 8 shows a schematic mounting structure of an SCQ-36 power module of a certain product after being mounted in an SCQ-36 data management processor.
Claims (6)
1. The utility model provides a power module structure, its characterized in that includes power module heat dissipation frame, power control module and heating panel (16), its characterized in that: an energy storage capacitor mounting circular sinking platform (1) is designed on the power module heat dissipation frame and used for mounting and fixing the energy storage capacitor; a power DC/DC device mounting through hole (6) is designed on the power module heat dissipation frame, and a power DC/DC device (17) is fixed on the power module heat dissipation frame by using the mounting through hole (6); the power module radiating frame is provided with a boss (10) for assembling the power module radiating frame with the power control module and assembling the power module radiating frame with the radiating plate, so that the local strength of the power module radiating frame is increased, and the vibration resistance of the power module is improved;
the energy storage capacitor is fixed in a circular sinking platform (1) on the power module heat dissipation frame through a circular insulating gasket (2), an annular insulating sleeve (3), an insulating pressing plate (4) and a capacitor cover plate (5), and insulation between the energy storage capacitor and the power module heat dissipation frame is guaranteed;
a wire welding area (14) is designed on the power supply control module, and a wire harness formed by welding a power DC/DC device and an energy storage capacitor on a heat dissipation frame of the power supply module is welded with a corresponding pad hole in the wire welding area (14); the power control module is provided with a board-level connector (15) which provides an external electrical interface for the whole power module;
the power supply control module is formed by bonding a printed board (12) and a heat dissipation cold plate (13), a heat source device on the power supply control module conducts and dissipates heat through the heat dissipation cold plate (13), a power supply module heat dissipation frame and the power supply control module are assembled by adopting a fastener, and the heat dissipation cold plate of the power supply control module is in close contact with the power supply module heat dissipation frame;
a wire passing groove (7) is designed on the heat dissipation frame of the power supply module, and a wire harness formed by welding a wire with the power DC/DC device and the energy storage capacitor is welded with a corresponding welding wire hole on the power supply control module through the wire passing groove (7).
2. The power module structure of claim 1, wherein the power module heat dissipation frame is designed with a bendable wire clamp (11), a wire harness formed by a power DC/DC device and an energy storage capacitor welding wire, and the bendable wire clamp (11) is used for fixing when wiring in the power module heat dissipation frame.
3. The power module structure of claim 2, wherein the power module heat dissipation frame is provided with pulling devices (8) at two sides thereof for facilitating the overall pulling and maintenance of the power module in the chassis.
4. The power module structure of claim 3, wherein the locking devices (9) are designed on both sides of the heat dissipation frame of the power module to facilitate locking and fixing and heat transfer after the power module is installed in the chassis.
5. The power supply module arrangement according to claim 1, wherein the heat sink (16) is designed with parallel heat sink grooves to increase the heat conducting area of the heat sink.
6. The power module structure of claim 1, wherein the power module heat dissipation frame and the heat dissipation plate (16) are integrally formed by milling from 2a12 aluminum alloy in T4 state, and the heat dissipation cold plate is bonded to the printed board by a heat conductive insulating adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811053966.6A CN109348670B (en) | 2018-09-11 | 2018-09-11 | Power module structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811053966.6A CN109348670B (en) | 2018-09-11 | 2018-09-11 | Power module structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109348670A CN109348670A (en) | 2019-02-15 |
| CN109348670B true CN109348670B (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811053966.6A Active CN109348670B (en) | 2018-09-11 | 2018-09-11 | Power module structure |
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| CN (1) | CN109348670B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034502A (en) * | 2019-05-22 | 2019-07-19 | 深圳市华益电气有限责任公司 | A kind of Novel outdoor communication equipment power supply unit |
| WO2022252143A1 (en) * | 2021-06-02 | 2022-12-08 | 舍弗勒技术股份两合公司 | Integrated power module and vehicle |
| CN114423238B (en) * | 2022-01-19 | 2024-07-09 | 贵州航天林泉电机有限公司 | High-power controller for satellite |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014213581A1 (en) * | 2014-07-11 | 2016-01-14 | Zf Friedrichshafen Ag | Power module, control module, power electronics module and stator for an electrical machine, electrical machine and method for producing a power electronics module |
| CN105916354B (en) * | 2016-05-24 | 2018-09-25 | 深圳威迈斯电源有限公司 | A kind of power module with cofferdam |
| CN106300906B (en) * | 2016-08-30 | 2018-12-14 | 陕西千山航空电子有限责任公司 | A kind of power adaptation box structure |
| CN107181392A (en) * | 2017-05-27 | 2017-09-19 | 常州博瑞电力自动化设备有限公司 | A kind of instant-plugging can radiate power module |
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| CN109348670A (en) | 2019-02-15 |
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