WO2019007162A1

WO2019007162A1 - Module power supply

Info

Publication number: WO2019007162A1
Application number: PCT/CN2018/088027
Authority: WO
Inventors: 王天均
Original assignee: 广州金升阳科技有限公司
Priority date: 2017-07-04
Filing date: 2018-05-23
Publication date: 2019-01-10
Also published as: CN107295761A

Abstract

Provided is a module power supply, comprising a housing made of aluminium alloy and a circuit board located in the housing, wherein the housing comprises a base and an upper cover covering the base; the circuit board has electronic components thereon; an insulation sheet is respectively arranged between the circuit board and the base as well as between the circuit board and the upper cover; the circuit board comprises a primary PCB horizontally placed on a bottom surface of the base; a socket or connector electrically connected to the circuit board is disposed at one side of the base; the circuit board further comprises a secondary PCB laterally standing on the primary PCB; surfaces of the base and the upper cover are covered by an anodic oxide layer; the middle portion of the upper cover is provided with a hole from outside to inside; the anodic oxide layer, around the hole, on an inner wall of the upper cover is removed outwards along the circumference of the hole to form a metal contact; several metal supports are disposed on the secondary PCB to form a metal connector of the circuit board; the metal supports on the secondary PCB are fixedly connected to the metal contact on the upper cover by means of screws so as to form a conductive path from the housing and the circuit board to a ground terminal of the socket or connector; and the base is filled with an encapsulation adhesive, and the encapsulation adhesive is used for sealing the electronic components inside the base.

Description

Module power supply

Technical field

The invention relates to a switching power supply of a module package, in particular to a module power supply of an aluminum alloy material.

Background technique

As we all know, China's offshore continental shelf contains abundant oil and natural gas resources, and the ocean is rich in energy, fishery, struvite and other resources, and it is also a strategic road. China's fishing boats, official ships, including warships, are also increasingly frequent.

The module power supply used in the ship's electrical control must have good resistance to salt spray corrosion when used on the sea, good high temperature and high humidity resistance, good waterproof, moisture proof, dustproof performance, long life and high Reliability and other special performance requirements. In order to meet the above application conditions, it is necessary to design a module power supply structure to meet the above requirements.

Summary of the invention

The object of the present invention is to provide a module power supply of aluminum alloy material which has good salt spray corrosion resistance, good high temperature resistance and high humidity performance, and is excellent in waterproof, moisture proof and dustproof performance.

In order to solve the above technical problem, the present invention provides a module power supply, comprising an outer casing made of an aluminum alloy material and a circuit board located in the outer casing, the outer casing comprising a base and an upper cover buckled on the base, wherein the base and the upper cover are square, wherein The base is a five-sided joint structure, the upper cover is in the shape of a flat plate, and the base and the upper cover are fixedly connected by screws; the circuit board has electronic components, and an insulating sheet is respectively disposed between the circuit board and the base and the upper cover, and the circuit board includes a main PCB board placed on the bottom surface of the base; one side of the base is provided with a socket or a connector electrically connected to the circuit board, the socket or the joint has a grounding end, and a sub-PCB board, a base and the upper side standing on the main PCB board The surface of the cover is covered with an anodized layer, and the middle portion of the upper cover is provided with a hole from the outside to the inside. The inner wall of the upper cover is removed from the periphery of the hole to remove the anodized layer around the hole to form a metal contact; the secondary PCB is provided with a plurality of metal brackets. Forming a metal joint of the circuit board, the metal bracket on the sub-PCB board and the metal contact of the upper cover are fixedly connected by screws to form a conductive connection of the outer casing, the circuit board to the ground end of the plug or the joint ; Filled with a plastic package, the package within the electronic device within the base rubber seal base.

Preferably, the hole in the middle of the upper cover is a V-shaped counterbore structure opened from the outside to the inside.

Preferably, the main PCB is provided with a heat sink, and the top end of the heat sink extends laterally as a heat dissipation flat plate, and the heat dissipation flat plate is covered with the thermal conductive adhesive and is closely attached to the inner wall of the upper cover.

Preferably, the method further comprises a pressure plate, wherein the main PCB board is provided with electronic components of a vertical plug-in, the electronic components of the vertical plug-in are close to the inner side wall of the base, and the vertical plug-in components on the main PCB board pass the screw for the press plate Press on the inner side wall of the base.

Preferably, the bottom surface of the base is provided with a light-transmitting hole, and the main PCB board is further provided with an indicator light. The indicator light is sleeved with a column-shaped flexible outer cover, and the flexible outer cover is formed between the main PCB board and the base to form an indication. a light guide channel between the lamp and the light transmission hole of the base.

Preferably, the flexible cover on the indicator light is a hard sponge cover.

Preferably, the upper cover protrudes horizontally outward from the side surface, and a through hole is formed in the side sill for fixed connection with the external support.

DRAWINGS

Figure 1 is an exploded perspective view of the main viewing angle of the module power supply of the present invention;

Figure 2 is an exploded perspective view of the rear view of the module power supply of the present invention;

Figure 3 is an assembled perspective view of the base of the module power supply of the present invention, showing the assembly position of the pressure plate;

Figure 4 is a perspective view of the upper cover of the module power supply of the present invention;

Figure 5 is a perspective view of another perspective view of the upper cover of the module power supply of the present invention;

Figure 6 is a perspective view of the base of the module power supply of the present invention;

Figure 7 is a perspective view of another perspective view of the base of the module power supply of the present invention;

Figure 8 is an assembled perspective view of the base of the module power supply of the present invention;

Figure 9 is a perspective view showing the assembly of the package power of the module power supply of the present invention;

Figure 10 is a perspective view of the module power supply of the present invention;

Figure 11 is a perspective view of another perspective of the module power supply of the present invention.

Detailed ways

Referring to FIG. 1 to FIG. 3, FIG. 1 is an exploded perspective view of a module power supply according to the present invention. A module power supply includes a housing and a circuit board located in the housing. The housing includes a base 2 and an upper cover 1 attached to the base 2. Specifically, the module power supply includes an upper cover 1, a base 2, a sticker 3, a coaxial four-core interface 4, a socket 5 with a switch, an insulating sheet 6, a sponge pad 7, a main PCB board 8, and an LED lamp 9 , a small PCB board 10, an aluminum heat sink 11, an insulating sheet 12, a thermal conductive silicone pad 13, an upright electronic component 14 with a large heat generation, a metal bracket 15, a metal platen 16, and the like.

As shown in FIG. 4 and FIG. 5, the upper cover 1 is a flat plate shape formed by stamping an aluminum alloy, and the surface is anodized to black, and a counterbore 101 is opened at a position corresponding to four corners on the edge of the upper cover 1 for the base. 2 screw fixing connection; the inner wall of the counterbore 101 removes the anodic oxide so as to form a 6-sided closed integral conductive structure of the outer casing by screwing with the metal base 2. The counterbore 101 on the rim of the upper cover 1 is preferably openable as a V-shaped counterbore. At least one hole 102 is further formed in the middle portion of the upper cover 1, and the inner surface of the upper cover 1 is removed from the periphery of the hole 102 to remove the anodized layer on the periphery thereof to form a metal contact 105, that is, the reverse side has a conductive layer from which the anodic oxide is removed. a mounting plane for coupling the screw and the metal bracket 15 so that leakage current on the integral casing formed by the base 2 and the upper cover 1 is conducted to the circuit board, and then the upper wire is coupled to the ground end of the interface 4 or the socket 5 through the upper wire thereof. The grounding function of the leakage current of the whole casing is realized to prevent the person from being shocked when contacting the casing. The hole 102 in the middle of the upper cover 1 may preferably be a V-shaped counterbore that is opened from the outside to the inside. The upper cover 1 protrudes horizontally outward from the side surface with a side sill 110, and at least one through hole 111 is defined in the side sill 110 to realize screw fixing connection with the external support to achieve fixation with the external support.

As shown in FIG. 6 and FIG. 7, the base 2 is a five-sided joint structure formed by stretching of an aluminum alloy, the surface is anodized to black, and four metal screw bases 201 are riveted at four corners of the base 2, and the screw base 201 is used. The same cover 1 is used for screw fastening. A short screw seat 202 is riveted at a center of the inner surface of the bottom surface of the base 2, and the short screw base 202 is used for screw-fixing connection with the main PCB board 8. A small transparent hole 205 is opened in the top surface of the base 2 to facilitate the exposure of the LED light to the power switch state. The front end surface of the base 2 is provided with a rectangular groove 207 for attaching the sticker 3, and the groove 207 has at least one V-shaped counterbore 209 for assembling the grub screw. The rear end surface of the base 2 has two

ports

211 and 212. The port 211 is a rectangular hole for assembling the power socket 5 with a switch. The port 212 is a waist-shaped hole, that is, a waist-shaped hole with a straight edge in the middle of the two ends. In the assembly interface, such as the line port, the power connector 4 of the four-core power line is stuck. The circuit board is electrically connected to an external port such as the socket 5 and the connector 4, and the external port such as the socket 5 or the connector 4 has a ground terminal.

The circuit board includes a main PCB board 8 lying on the bottom surface of the base 2 and a sub-PCB board 10 standing on the main PCB board 8. The circuit board has electronic components, wherein the main PCB board 8 is also provided with a vertical plug-in. The electronic components of the vertical insert are close to the inner side wall of the base 2. There is an LED lamp 9 on the main PCB board 8. The LED lamp 9 is sleeved with a columnar hard sponge cover 7, and the hard sponge cover 7 is placed between the main PCB board 8 and the base 2, and is pressed against the base 2, so that The LED light is led to the light transmission hole 205 of the base 2. The hard sponge cover 7 on the LED lamp 9 can also be replaced with other flexible outer cover to achieve the same function of forming the light guiding passage between the LED indicator 9 and the light transmission hole 205 of the base 2. The main PCB 8 has a plurality of erected electronic components 14 which are screwed to the base 2 via a pressure plate 16 for guiding the heat of the electronic components 14 to the outer casing for heat dissipation through the outer casing. An insulating sheet 12 is disposed between the main PCB board 8 and the inner surface of the base 2 to ensure insulation between the main PCB board 8 and the inner surface of the base 2.

A plurality of fins 11 are further disposed on the main PCB board 8. The top end of the heat sink 11 extends laterally as a heat dissipating plate 801. The thermal conductive silicone pad 13 covered on the heat dissipating plate 801 of the heat sink 11 is closely attached to the upper cover 1 for The heat on the main PCB board 8 is conducted on the upper cover 1 and the entire metal casing, and is dissipated through the metal casing.

A small PCB board 10 (also referred to as a sub-PCB board) is soldered on the main PCB board 8. The small PCB board 10 is provided with a plurality of metal brackets 15 connected by screws and V-shaped countersunk holes on the upper cover 1 to ensure the upper cover 1 The leakage current is introduced into the small PCB board 10, and is guided to the grounding end of the interface 4 or the socket 5 through the wires on the circuit board to realize the grounding function of the leakage current of the whole casing to ensure the safety of the product. An insulating sheet 6 is disposed between the upper surface of the circuit board (including the main PCB board 8 and the small PCB board 10) and the inner surface of the upper cover 1 to ensure insulation between the circuit board and the inner surface of the upper cover 1.

As shown in FIG. 8, it is a base 2 equipped with a main PCB board 8, a small PCB board 10, an interface 4 with a switch socket 5 and a coaxial four-core line, forming an internal circuit board and equipped with an external socket 5 and The five-sided sealing cavity of the interface 4 forms a semi-finished product of the base to be potted and assembled with the upper cover 1. As shown in Fig. 9, the resin or silica gel is poured, and the electronic components inside the base 2 are all sealed, and the metal upper cover 1 is covered to form a finished product of the module power supply (as shown in Figs. 10 and 11). The product of the invention has the functions of waterproofing, moisture proof, dustproof, salt spray corrosion resistance, high temperature and high humidity resistance, long life and high reliability, so that the module power supply of the invention can meet the environment (for example, at sea). Use occasions.

The above is only a preferred embodiment of the present invention, and it should be noted that the above-described preferred embodiments are not to be construed as limiting the present invention, and those skilled in the art, without departing from the spirit and scope of the invention, It is also possible to make a number of improvements and refinements, which are also to be considered as the scope of protection of the present invention, and the scope of the present invention should be defined by the scope of the claims.

Claims

A module power supply, comprising an outer casing made of aluminum alloy and a circuit board located in the outer casing, the outer casing comprising a base and a top cover buckled on the base, the base and the upper cover are square, wherein the base is a five-sided joint structure, The upper cover is in the shape of a flat plate, and the base and the upper cover are fixedly connected by screws; the circuit board has electronic components, and an insulating sheet is respectively disposed between the circuit board and the base and the upper cover, and the circuit board includes a main PCB board placed on the bottom surface of the base One side of the base is provided with a socket or a connector electrically connected to the circuit board, and the socket or the joint has a grounding end, and is characterized in that it further comprises a sub-PCB board laterally standing on the main PCB board, and the surface of the base and the upper cover is covered Anodized layer,

The middle portion of the upper cover is provided with a hole from the outside to the inside, and the inner wall of the upper cover is removed from the periphery of the hole to remove the anodized layer around the hole to form a metal contact;

A metal bracket is mounted on the sub-PCB board to form a metal joint of the circuit board, and the metal bracket on the sub-PCB board and the metal contact of the upper cover are fixedly connected by screws to form a conductive path of the outer casing, the circuit board to the ground end of the plug or the joint. ;

The base is filled with an encapsulant, and the encapsulant seals the electronic components in the base.
The module power supply according to claim 1, wherein the hole in the middle of the upper cover is a V-shaped counterbore structure opened from the outside to the inside.
The module power supply according to claim 1, wherein the main PCB has a heat sink, and the top end of the heat sink extends laterally to form a heat sink, and the heat sink is covered with the heat conductive adhesive and is closely attached to the inner wall of the upper cover.
The module power supply according to claim 1, further comprising a pressure plate, wherein the main PCB board is provided with electronic components of a vertical plug-in, and the electronic components of the vertical plug-in are close to the inner side wall of the base, and the main PCB board The vertical insert element is pressed onto the inner side wall of the base by means of a pressure plate.
The module power supply according to claim 1, wherein the bottom surface of the base is provided with a light-transmitting hole, and the main PCB board is further provided with an indicator light, and the indicator light is sleeved with a columnar flexible outer cover, and the flexible outer cover is Between the main PCB board and the base, a light guiding channel between the indicator light and the light transmission hole of the base is formed.
The module power supply according to claim 5, wherein the flexible cover on the indicator light is a hard sponge cover.
The module power supply according to claim 1, wherein the upper cover protrudes horizontally outward from the side surface, and the side opening defines a through hole for fixed connection with the external support.