CN217769890U - VPX machine case alternating current power supply unit - Google Patents
VPX machine case alternating current power supply unit Download PDFInfo
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- CN217769890U CN217769890U CN202122813047.8U CN202122813047U CN217769890U CN 217769890 U CN217769890 U CN 217769890U CN 202122813047 U CN202122813047 U CN 202122813047U CN 217769890 U CN217769890 U CN 217769890U
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Abstract
The utility model discloses a VPX case AC power supply device, which relates to the technical field of communication and comprises a cover plate, a shell, a filtering system, a conversion system and a clapboard; the top of the shell is open, and the cover plate is connected with the top of the shell and used for sealing the top of the shell; the partition plate divides the inside of the shell into a filtering area and a conversion area; the filtering system install the filtering district, the conversion system install the conversion district, possess and can regard as independent whole installation to dismantle, alternating current-direct current conversion, filtering, electromagnetic shield's characteristics, solved the not good problem of electromagnetic shield performance, maintainability that exist among the prior art.
Description
Technical Field
The patent relates to the technical field of communication, in particular to a VPX case alternating current power supply device.
Background
The VPX bus is a new generation of high-speed serial bus standard proposed by vta (VME International Trade Association) in 2007 on the basis of its VME bus parallel bus technology. The VPX bus integrates more IO, expands a switching interconnection structure, supports high-speed serial protocols such as SRIO, PCIE, gigabit Ethernet and the like, and is a new generation high-speed bus product of a military reinforcement system.
The VPX framework has excellent reliability, maintainability, expandability and high processing capacity, breaks through the constraint of data transmission by adopting a single bus in traditional frameworks such as CPCI (compact peripheral component interconnect), VWE (voltage-free Ethernet) and the like, adopts a novel differential serial bus, and supports various interface standards. The VPX architecture meets the requirements of device-based communication equipment development on a hardware platform architecture, the architecture is a standard platform architecture, more and more board cards and system manufacturers continuously develop board cards and systems meeting various application requirements, and development of a basic hardware platform of a communication system is greatly promoted.
At present, a VPX case mainly adopts a direct-current power supply mode, but some application occasions cannot be specially provided with a direct-current power supply, an alternating-current to direct-current stabilized power supply needs to be arranged outside the case to supply power to the case, the needed power supply current of the VPX power supply is large, the requirement on the stabilized power supply is high, the size of a stabilized voltage switch power supply is large, the use is inconvenient, and the EMC problem can be caused by using an external stabilized voltage switch power supply.
On the other hand, with the development of science and technology, the electromagnetic environment formed when the communication device works is more and more complex, so the importance of the electromagnetic shielding design of the communication device is more and more prominent. Generally, various EMC (electromagnetic compatibility interference) noises exist in a power supply of electronic equipment, and the EMC noises affect the normal operation of the electronic equipment, so that EMC filtering is necessary for the power supply of the electronic equipment.
The prior art is disclosed as chinese patent publication No. CN 209692608U, chinese patent publication No. 2019.11.26, which discloses a high power VPX power supply with redundancy, comprising a first stage circuit, a second stage circuit and a third stage circuit. However, in the prior art, a modular design is not adopted, so that once the components are damaged, the VPX case needs to be disassembled completely, and the maintainability is poor. Meanwhile, the power filter lacks electromagnetic shielding measures, and electromagnetic leakage is easily caused. In addition, some devices with higher power have higher failure rates and shorter lifetimes due to lack of good heat dissipation conditions.
Therefore, how to utility model a can solve the power supply unit that the electromagnetic shielding performance that exists is not good among the prior art, maintainability is not good, the thermal diffusivity is poor is the problem that this technical field needs to solve urgently
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the not good, not good problem of maintainability of the electromagnetic shielding performance of above prior art, provide a VPX machine case alternating current power supply unit, possess and can regard as independent whole installation to dismantle, characteristics of alternating current-direct current conversion, filtering, electromagnetic shield.
In order to realize the above, the utility model discloses the purpose, the technical scheme of adoption as follows:
a VPX case alternating current power supply device comprises a cover plate, a shell, a filtering system, a conversion system and a partition plate; the top of the shell is open, and the cover plate is connected with the top of the shell and used for sealing the top of the shell; the partition plate divides the interior of the shell into a filtering area and a conversion area; the filtering system is arranged in the filtering area, and the converting system is arranged in the converting area.
Preferably, the front surface of the housing is provided with a fixing plate, and the size of the fixing plate is larger than that of the back surface of the housing.
Furthermore, one end of the clapboard is embedded into the cover plate and is fixedly connected with the cover plate; the other end of the clapboard is fixedly connected with the bottom of the shell.
Further, the filtering system comprises an input connector and a filter; the input connector penetrates through the fixing plate and is fixedly connected with the fixing plate; the filter is positioned in the filtering area; the output end of the input connector is electrically connected with the input end of the filter, and the input end of the input connector is used for being externally connected with an alternating current power supply.
Furthermore, the conversion system comprises a first PCB, a second PCB and an output connector; the first PCB is fixedly connected with the bottom surface of the shell, and the second PCB is fixedly connected with the cover plate; the output connector is positioned outside the shell and is fixedly connected with the shell by being embedded into the back of the shell; the first PCB is electrically connected with the second PCB, and the second PCB is electrically connected with the output connector.
Furthermore, a PFC device is arranged on the first PCB and used for correcting power and rectifying; the input end of the PFC device is electrically connected with the output end of the filter; and a small hole is formed in the middle of the partition plate and used for passing through a conducting wire between the filter and the PFC device.
Furthermore, a DC/DC converter is arranged on the second PCB and used for converting high-voltage direct current into low-voltage direct current; the input end of the DC/DC converter is electrically connected with the output end of the PFC device, and the output end of the DC/DC converter is electrically connected with the output connector.
Furthermore, the edge of the open side of the shell is provided with a notch, and the cover plate is fixedly connected with the shell by being embedded into the notch.
Furthermore, a plurality of screws are arranged on the fixing plate and used for fixedly installing the VPX case alternating current power supply device on the case.
Furthermore, the outer walls of the cover plate and the shell are provided with heat dissipation structures so as to increase the heat dissipation area.
The beneficial effects of the utility model are as follows:
the utility model discloses a modular design disassembles power supply unit for filtering system and conversion system to be equipped with the baffle and separate into filtering area and conversion area with the shell inside, conversion system install conversion area, thereby fully guaranteed the shielding between the system, the alternating current that comes from the power converts the direct current into for VPX machine case power supply via filtering system filtering and conversion system, possess and can regard as independent integral erection dismantlement, the characteristics of alternating current-direct current conversion, filtering, electromagnetic shield, solved the not good problem of electromagnetic shield performance, maintainability that exist among the prior art.
Drawings
Fig. 1 is a schematic longitudinal sectional view of the VPX chassis ac power supply apparatus according to embodiment 1.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a rear view of the VPX chassis ac power supply.
Fig. 4 is a schematic perspective cross-sectional view of the VPX chassis ac power supply apparatus.
Fig. 5 is a perspective view of the VPX chassis ac power supply apparatus.
The device comprises a cover plate 1, a shell 2, a fixing plate 3, a partition plate 4, an input connector 5, a filter 6, a first PCB 7, a second PCB 8, an output connector 9, a PFC device 10, a DC/DC converter 11 and a screw 12.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1, 2, 3, 4, and 5, an ac power supply device for a VPX chassis includes a cover plate 1, a housing 2, a filter system, a conversion system, and a partition plate 4; the top of the shell 2 is open, the shell is of a structure with five surfaces and a rectangular cross section, the bottom surface of the cover plate 1 is the same as that of the shell 2, the cover plate 1 is connected with the top of the shell 2 and used for sealing the top of the shell 2, and the partition plate 4 divides the interior of the shell 2 into a filtering area and a conversion area; the filter system is arranged in the filter area, and the conversion system is arranged in the conversion area; the edge at the top of shell is equipped with the stair structure of L type, apron 1 through imbedding breach and shell 2 fixed connection.
The front surface of the shell 2 is provided with a fixing plate 3, and the area of the front surface of the fixing plate 3 is larger than that of the back surface of the shell 2.
One end of the clapboard 4, which is connected with the cover plate 1, is embedded into the cover plate 1 and is fixedly connected with the cover plate 1; the other end of the clapboard 4 is fixedly connected with the bottom surface of the shell 2;
the filtering system comprises an input connector 5 and a filter 6; the input connector 5 penetrates through the fixing plate 3 and is fixedly connected with the fixing plate 3; the filter 6 is positioned in the filtering area and fixedly connected with the fixed plate 3; the output end of the input connector 5 is electrically connected with the input end of the filter 6, and the input end of the input connector 5 is externally connected with an alternating current power supply. In the present embodiment, the filter 6 may adopt a one-stage filter circuit, a two-stage filter circuit, and a three-stage filter circuit,
the conversion system comprises a first PCB (printed circuit board) 7, a second PCB 8 and an output connector 9; the first PCB 7 is fixedly connected with the bottom surface of the shell 2, and the second PCB 8 is fixedly connected with the cover plate 1; the output connector 9 is positioned outside the shell 2 and is fixedly connected with the shell 2 by being embedded into the back surface of the shell 2; the first PCB 7 is electrically connected with the second PCB 9, and the second PCB is electrically connected with the output connector.
The first PCB 7 is provided with a PFC device 10 for correcting power and rectifying; the input end of the PFC device 10 is connected with the output end of the filter 6 through a conducting wire, and a small hole is formed in the middle of the partition plate 4 and used for passing through the conducting wire between the filter 6 and the PFC device 10; a heat-conducting silicone grease or a heat-conducting gasket is arranged between the PFC device 10 and the shell 2; in this example, the PFC device 10 may be mounted on the cover plate 1, soldered on the second PCB 8, and used as a power factor correction module, and may form a high performance AC/DC power supply with a power factor of 0.96 or more with a DC/DC converter 11, so as to achieve rectification, power factor correction and boost.
The second PCB board 8 is provided with a DC/DC converter 11 for converting high-voltage direct current into low-voltage direct current; the input end of the DC/DC converter 11 is electrically connected with the output end of the PFC device 10, the output end of the DC/DC converter 11 is electrically connected with the output connector 9, and heat-conducting silicone grease or a heat-conducting gasket is arranged between the DC/DC converter 11 and the cover plate 1. The DC/DC converter 11 in this embodiment may be mounted on the base plate and soldered to the first PCB board 7.
The fixing plate 3 is provided with a plurality of screws 12 for fixedly mounting the alternating current power supply device of the VPX case on the case. In this embodiment, 6 round holes are formed in the fixing plate 3 and used for expanding riveting loose screws 12, 2 guide holes are further formed, and meanwhile, guide pins are arranged at corresponding positions of the back plate of the VPX case.
The outer walls of the cover plate 1 and the outer shell 2 are both provided with heat dissipation teeth to increase the heat dissipation area.
The utility model discloses a modular design, disassemble power supply unit into filtering system and switching system, and be equipped with baffle 4 and separate into filtering area and switching area the shell 2 inside, the switching system install in the switching area, thereby fully guaranteed the shielding between the system; an external power supply provides 85-264V alternating current voltage, the alternating current voltage is input into the filter 6 through the input connector 5 to carry out EMI filtering on a power supply signal, then the alternating current voltage is rectified and corrected by a PFC device 10 of the first PCB 7 and is boosted to 390VDC, the alternating current voltage is converted into 28VDC through a high-voltage DC/DC converter 11 of the second PCB 8 and is output from the output connector 9, and the electromagnetic shielding circuit has the characteristics of independent integral installation and disassembly, alternating current-direct current conversion, filtering and electromagnetic shielding, and solves the problems of poor electromagnetic shielding performance and poor maintainability in the prior art in a combined manner.
Example 2
As shown in fig. 1, 2, 3, 4, and 5, an ac power supply device for a VPX chassis includes a cover plate 1, a housing 2, a filter system, a conversion system, and a partition plate 4; the top of the shell 2 is open, the shell is of a structure with five surfaces and a rectangular cross section, the bottom surface of the cover plate 1 is the same as that of the shell 2, the cover plate 1 is connected with the top of the shell 2 and used for sealing the top of the shell 2, and the partition plate 4 divides the interior of the shell 2 into a filtering area and a conversion area; the filter system is arranged in the filter area, and the conversion system is arranged in the conversion area; the edge at the top of shell is equipped with the stair structure of L type, apron 1 through imbedding breach and shell 2 fixed connection.
In this embodiment, the VPX chassis design complies with VITA46.0, VITA48.0, VITA48.2, and VITA47 design standards, a heat dissipation manner combining cold conduction and air cooling is adopted, the chassis size is 482.6 × 354.8 × 380mm (width × height × depth), and the cover plate 1 and the housing 2 are made of 6061 or 5a06 aluminum alloy material through CNC numerical control processing. The partition 4 is provided with a small hole for passing through the conductive wire between the filter 6 and the PFC device 10.
The front surface of the shell 2 is provided with a fixing plate 3, and the area of the front surface of the fixing plate 3 is larger than that of the back surface of the shell 2.
One end of the clapboard 4, which is connected with the cover plate 1, is embedded into the cover plate 1 and is fixedly connected with the cover plate 1; the other end of the clapboard 4 is fixedly connected with the bottom surface of the shell 2; in the embodiment, the wall thickness of the partition plate 4 is 2mm, a groove with the depth of 5mm and the width of 2.4mm is formed in the corresponding position of the cover plate 1, the highest position of the partition plate 4 extends into the groove, and an electromagnetic shielding strip can be placed in the groove, so that electromagnetic signals of the filtering area and the converting area cannot interfere with each other.
The filtering system comprises an input connector 5 and a filter 6; the input connector 5 penetrates through the fixing plate 3 and is fixedly connected with the fixing plate 3; the filter 6 is positioned in the filtering area and fixedly connected with the fixed plate 3; the output end of the input connector 5 is electrically connected with the input end of the filter 6, and the input end of the input connector 5 is externally connected with an alternating current power supply. In this embodiment, the filter 6 may be a one-stage filter circuit, a two-stage filter circuit, or a three-stage filter circuit.
The conversion system comprises a first PCB (printed circuit board) 7, a second PCB 8 and an output connector 9; the first PCB 7 is fixedly connected with the bottom surface of the shell 2, and the second PCB 8 is fixedly connected with the cover plate 1; the output connector 9 is positioned outside the shell 2 and is fixedly connected with the shell 2 by being embedded into the back surface of the shell 2; the first PCB 7 is electrically connected with the second PCB 9, and the second PCB is electrically connected with the output connector.
The first PCB 7 is provided with a PFC device 10 for correcting power and rectifying; the input end of the PFC device 10 is connected with the output end of the filter 6 through a conducting wire, and a small hole is formed in the middle of the partition plate 4 and used for passing through the conducting wire between the filter 6 and the PFC device 10; a heat-conducting silicone grease or a heat-conducting gasket is arranged between the PFC device 10 and the shell 2; in this example, the PFC device 10 may be mounted on the cover plate 1, soldered on the second PCB 8, and used as a power factor correction module, and may form a high performance AC/DC power supply with a power factor of 0.96 or more with a DC/DC converter 11, so as to achieve rectification, power factor correction and boost.
A DC/DC converter 11 is arranged on the second PCB 8 and used for converting high-voltage direct current into low-voltage direct current; the input end of the DC/DC converter 11 is electrically connected with the output end of the PFC device 10, the output end of the DC/DC converter 11 is electrically connected with the output connector 9, and heat-conducting silicone grease or a heat-conducting gasket is arranged between the DC/DC converter 11 and the cover plate 1.
The fixing plate 3 is provided with a plurality of screws 12 for fixedly mounting the VPX case AC power supply device on a case. In this embodiment, 6 round holes are formed in the fixing plate 3 and used for expanding riveting loose screws 12, 2 guide holes are further formed, and meanwhile, guide pins are arranged at corresponding positions of the back plate of the VPX case.
The outer walls of the cover plate 1 and the shell 2 are provided with heat dissipation teeth to increase the heat dissipation area.
The utility model discloses a modular design, disassemble power supply unit into filtering system and switching system, and be equipped with baffle 4 and separate into filtering area and switching area the shell 2 inside, the switching system install in the switching area, thereby fully guaranteed the shielding between the system; an external power supply provides 85-264V alternating current voltage, the alternating current voltage is input into a filter 6 through an input connector 5 to carry out EMI filtering on a power supply signal, then the alternating current voltage passes through a PFC (power factor correction) device 10 of a first PCB (printed circuit board) 7 to carry out rectification and power factor correction, the voltage is boosted to 390VDC, the alternating current voltage passes through a high-voltage DC/DC converter 11 of a second PCB 8 to be converted into 28VDC, and the 28VDC is output from an output connector 9.
Example 3
As shown in fig. 1, 2, 3, 4, and 5, an ac power supply device for a VPX chassis includes a cover plate 1, a housing 2, a filter system, a conversion system, and a partition plate 4; the top of the shell 2 is open, the shell is of a structure with five surfaces and a rectangular cross section, the bottom surface of the cover plate 1 is the same as that of the shell 2, the cover plate 1 is connected with the top of the shell 2 and used for sealing the top of the shell 2, and the partition plate 4 divides the interior of the shell 2 into a filtering area and a conversion area; the filter system is arranged in the filter area, and the conversion system is arranged in the conversion area; the edge at the top of shell is equipped with the stair structure of L type, apron 1 through imbedding breach and shell 2 fixed connection.
In this embodiment, the VPX chassis design complies with VITA46.0, VITA48.0, VITA48.2, and VITA47 design standards, a heat dissipation manner combining cold conduction and air cooling is adopted, the chassis size is 482.6 × 354.8 × 380mm (width × height × depth), and the cover plate 1 and the housing 2 are made of 6061 or 5a06 aluminum alloy material through CNC numerical control processing. The partition 4 is provided with a small hole for passing through the conductive wire between the filter 6 and the PFC device 10.
The front surface of the shell 2 is provided with a fixing plate 3, and the area of the front surface of the fixing plate 3 is larger than that of the back surface of the shell 2.
One end of the clapboard 4, which is connected with the cover plate 1, is embedded into the cover plate 1 and is fixedly connected with the cover plate 1; the other end of the clapboard 4 is fixedly connected with the bottom surface of the shell 2; in the embodiment, the wall thickness of the partition plate 4 is 2mm, a groove with the depth of 5mm and the width of 2.4mm is formed in the corresponding position of the cover plate 1, the highest position of the partition plate 4 extends into the groove, and an electromagnetic shielding strip can be placed in the groove, so that electromagnetic signals of the filtering area and the converting area cannot interfere with each other.
The filtering system comprises an input connector 5 and a filter 6; the input connector 5 penetrates through the fixing plate 3 and is fixedly connected with the fixing plate 3; the filter 6 is positioned in the filtering area and fixedly connected with the fixed plate 3; the output end of the input connector 5 is electrically connected with the input end of the filter 6, and the input end of the input connector 5 is externally connected with an alternating current power supply. In this embodiment, the filter 6 may adopt a first-stage filter circuit, a second-stage filter circuit, and a third-stage filter circuit, and the present embodiment adopts a third-stage filter circuit, which includes a two-stage common mode and a one-stage differential mode, and can effectively filter common mode interference signals and differential mode interference signals; the input connector 5 adopts a high-reliability wire spring type aviation connector, the number of the cores is four, two positive and two negative cores, and one positive and one negative core are used for increasing redundancy so as to improve the reliability.
The conversion system comprises a first PCB (printed circuit board) 7, a second PCB 8 and an output connector 9; the first PCB 7 is fixedly connected with the bottom surface of the shell 2, and the second PCB 8 is fixedly connected with the cover plate 1; the output connector 9 is positioned outside the shell 2 and fixedly connected with the shell 2 by being embedded into the back surface of the shell 2; the first PCB 7 is electrically connected with the second PCB 9, and the second PCB is electrically connected with the output connector; in the present embodiment, the output connector 9 is a high-reliability wire spring type aviation connector, the number of cores is four or two, and in the present embodiment, four cores, two positive and two negative are used, wherein one positive and one negative are used for increasing redundancy to improve reliability.
The first PCB 7 is provided with a PFC device 10 for correcting power and rectifying; the input end of the PFC device 10 is connected with the output end of the filter 6 through a conducting wire, and a small hole is formed in the middle of the partition plate 4 and used for passing through the conducting wire between the filter 6 and the PFC device 10; a heat-conducting silicone grease or a heat-conducting gasket is arranged between the PFC device 10 and the shell 2; in this example, the PFC device 10 may be mounted on the cover plate 1, soldered on the second PCB 8, and is a power factor correction module, and may form a high performance AC/DC power supply with a power factor of 0.96 or more with devices such as the DC/DC converter 11, so as to achieve rectification, power factor correction, and boosting.
The second PCB board 8 is provided with a DC/DC converter 11 for converting high-voltage direct current into low-voltage direct current; the input end of the DC/DC converter 11 is electrically connected with the output end of the PFC device 10, the output end of the DC/DC converter 11 is electrically connected with the output connector 9, and heat-conducting silicone grease or a heat-conducting gasket is arranged between the DC/DC converter 11 and the cover plate 1. In the embodiment, the DC/DC converter 11 can be arranged on the bottom plate and welded on the first PCB 7; in the embodiment, the heat conduction adopts a heat conduction gasket, and the heat conduction gasket is preferably a GPA3000 and/or HGD5000 heat conduction silica gel gasket with the thickness of 1-3 mm; long-term and large-scale tests prove that when GPA3000 and/or HGD5000 heat-conducting silica gel gaskets with the thickness of 1-3mm are selected, the heat dissipation efficiency brought by the pressing contact is the highest.
The fixing plate 3 is provided with a plurality of screws 12 for fixedly mounting the alternating current power supply device of the VPX case on the case. In this embodiment, 6 round holes for expanding riveting loose non-detachable screws 12 are formed in the fixing plate 3, 2 guide holes are further formed, and meanwhile, guide pins are arranged at corresponding positions of the back plate of the VPX case.
The outer walls of the cover plate 1 and the outer shell 2 are both provided with heat dissipation teeth to increase the heat dissipation area.
The utility model discloses a modular design, disassemble power supply unit into filtering system and switching system to be equipped with baffle 4 and separate into filtering area and switching area with the shell 2 inside, switching system install in switching area, thus fully guaranteed the shielding between the system; an external power supply provides 85-264V alternating current voltage, the alternating current voltage is input into the filter 6 through the input connector 5 to carry out EMI filtering on a power supply signal, then the alternating current voltage is rectified and corrected by a PFC device 10 of the first PCB 7 and is boosted to 390VDC, the alternating current voltage is converted into 28VDC through a high-voltage DC/DC converter 11 of the second PCB 8 and is output from the output connector 9, and the electromagnetic shielding circuit has the characteristics of independent integral installation and disassembly, alternating current-direct current conversion, filtering and electromagnetic shielding, and solves the problems of poor electromagnetic shielding performance and poor maintainability in the prior art in a combined manner.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A VPX machine case AC supply unit which characterized in that: comprises a cover plate (1), a shell (2), a filtering system, a conversion system and a clapboard; the top of the shell (2) is open, and the cover plate (1) is connected with the top of the shell (2) and used for sealing the top of the shell (2); the partition plate divides the interior of the shell (2) into a filtering area and a conversion area; the filtering system is arranged in the filtering area, and the converting system is arranged in the converting area.
2. The VPX chassis ac power supply of claim 1, wherein: the front surface of the shell (2) is provided with a fixing plate (3), and the size of the fixing plate (3) is larger than that of the back surface of the shell (2).
3. The VPX chassis ac power supply of claim 1, wherein: one end of the clapboard is embedded into the cover plate (1) and is fixedly connected with the cover plate (1); the other end of the clapboard is fixedly connected with the bottom of the shell (2).
4. The VPX chassis ac power supply of claim 2, wherein: the filtering system comprises an input connector assembly (5) and a filter (6); the input connector (5) penetrates through the fixing plate (3) and is fixedly connected with the fixing plate (3); the filter (6) is positioned in the filtering area; the output end of the input connector (5) is electrically connected with the input end of the filter (6), and the input end of the input connector (5) is externally connected with an alternating current power supply.
5. The VPX chassis AC power supply of claim 4, wherein: the conversion system comprises a first PCB (7), a second PCB (8) and an output connector (9); the first PCB (7) is fixedly connected with the bottom surface of the shell (2), and the second PCB (8) is fixedly connected with the cover plate (1); the output connector (9) is positioned outside the shell (2) and is fixedly connected with the shell (2) by being embedded into the back of the shell (2); the first PCB (7) is electrically connected with the second PCB (8), and the second PCB (8) is electrically connected with the output connector (9).
6. The VPX chassis ac power supply of claim 5, wherein: the first PCB (7) is provided with a PFC device (10) for correcting power and rectifying; the input end of the PFC device (10) is electrically connected with the output end of the filter (6); and a small hole is formed in the middle of the partition plate and used for passing through a conductive wire between the filter (6) and the PFC device (10).
7. The VPX chassis ac power supply of claim 6, wherein: a DC/DC converter (11) is arranged on the second PCB (8) and is used for converting high-voltage direct current into low-voltage direct current; the input end of the DC/DC converter (11) is electrically connected with the output end of the PFC device (10), and the output end of the DC/DC converter (11) is electrically connected with the output connector (9).
8. The VPX chassis ac power supply of claim 7, wherein: a heat-conducting silicone grease or a heat-conducting gasket is arranged between the DC/DC converter (11) and the cover plate (1); and heat-conducting silicone grease or a heat-conducting gasket is arranged between the PFC device (10) and the shell (2).
9. The VPX chassis ac power supply of claim 2, wherein: the fixing plate (3) is provided with a plurality of screws (12) for fixedly mounting the shell (2) on the case.
10. The VPX chassis ac power supply of claim 1, wherein: the outer walls of the cover plate (1) and the shell (2) are provided with heat dissipation structures so as to increase the heat dissipation area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122813047.8U CN217769890U (en) | 2021-11-16 | 2021-11-16 | VPX machine case alternating current power supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122813047.8U CN217769890U (en) | 2021-11-16 | 2021-11-16 | VPX machine case alternating current power supply unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217769890U true CN217769890U (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122813047.8U Active CN217769890U (en) | 2021-11-16 | 2021-11-16 | VPX machine case alternating current power supply unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217769890U (en) |
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2021
- 2021-11-16 CN CN202122813047.8U patent/CN217769890U/en active Active
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