TW202126156A - Power supply device with isolated heat dissipation channel which can isolate moisture and dust during air intake and output - Google Patents

Abstract

The present invention provides a power supply device with isolated heat dissipation channels, which mainly has a fan bracket and a transmission port bracket respectively provided at a first end and an opposite second end of a casing, and a circuit board and a heat sink module provided inside the casing. The heat sink module dissipates heat from all electronic components on the circuit board in a thermal contact mode, and provides a closed air passage between the fan bracket and the transmission port bracket. In this way, the air passage that may carry moisture and dust during air intake and output is isolated from the inside of the casing to meet the requirements of waterproof and dustproof.

Description

Power supply device with isolated heat dissipation channel

The invention is a power supply device with an isolated heat dissipation channel

With the advancement of technology, power supply devices meet the characteristics of various technologies to meet their demand for power supply, such as standardization and modularization of power supplies and hardware, so as to be suitable for different purposes and environments. Under the dual pressure of environmental protection and energy applications, the development of electric vehicles has been very active in recent years, and one of the important factors for the popularity of electric vehicles is the length of their endurance. The guarantee of endurance is in addition to the improvement of the capacity and efficiency of the battery itself. Like a car to a gas station, an electric car must rely on a popular charging station to meet the need for supplementary power from time to time.

In other words, there is a demand for a wide range of charging stations in the market, and the demand for outdoor charging cabinets has also increased significantly, which means that the power supply devices installed in outdoor charging cabinets must face more stringent environmental conditions and meet higher requirements. The standard of waterproof and dustproof. The power supply device of the existing 1U indoor server model is coated with three-proof paint, but when installed in an outdoor charging cabinet, the defect rate will increase greatly in case of rain. In other words, the power supply device of the existing server model is The weatherability has not been exhausted yet, and it needs to be further reviewed and a feasible solution is sought.

Therefore, the main purpose of the present invention is to provide a power supply device with an isolated heat dissipation channel, which is provided with a closed heat dissipation channel inside the casing of the power supply device to isolate moisture and dust that may be carried by the wind in and out.

The technical means adopted to achieve the above-mentioned purpose is to make the power supply device with an isolated heat dissipation channel include: A housing, in a rectangular shape, with a first end and a second end opposite to each other; A fan bracket arranged on the first end of the casing, a first air opening is formed on the fan bracket, and a fan is arranged inside the first air opening; A transmission port support, arranged at the second end of the casing, a second air opening is formed on the transmission port support, and the second air opening is opposite to the first air opening on the fan support; A heat sink module arranged in the casing, the heat sink module having a closed air duct, and the two ends of the air duct are respectively connected to the first air opening on the fan bracket and the second air opening on the transmission port bracket; A circuit board is arranged in the casing and located between the fan bracket and the transmission port bracket; the circuit board is provided with more than one electronic component, and the electronic component forms a thermal contact with the heat sink module.

According to the above structure, in the present invention, the circuit board provided in the casing is arranged between the fan bracket and the transmission port bracket, and the circuit board is isolated from the outside of the casing in the horizontal direction by the fan bracket and the transmission port bracket; , The electronic components on the circuit board make thermal contact with the heat sink module, and the heat sink module provides a closed air duct between the fan bracket and the transmission port bracket. When the fan is running, it may follow the outside The moisture and dust entered by the airflow will be isolated in the air duct to meet the requirements of waterproof and dustproof.

The following describes the technical means adopted by the present invention to achieve the intended purpose of the invention in conjunction with the drawings and the preferred embodiments of the present invention.

Regarding a preferred embodiment of the present invention, Figures 1 and 2 show the appearance of a casing 10 of the present invention, which is rectangular and has a first end and a second end. In this embodiment, The said first end refers to the front end of the casing 10, and a handle 13 is provided on the outside of it for extraction, loading and unloading; the second end is opposite to the first end in the horizontal direction, and specifically refers to the machine More than one transmission port 14 is provided on the rear end of the housing 10 for signal transmission and power output.

Referring to FIG. 3, the present invention is mainly provided with a fan bracket 20 and a transmission port bracket 30 at the first end and the opposite second end of the casing 10, and the casing 10 has a circuit board 40 inside. , A heat sink module 50, the heat sink module 50 uses thermal contact to dissipate the electronic components (not shown in the figure) provided on the circuit board 40, and is between the fan bracket 20 and the transmission port bracket 30 Provide a closed air duct;

The casing 10 includes an upper casing 11 and a lower casing 12. In this embodiment, the upper casing 11 is in the form of a cover plate, and the lower casing 12 is mainly provided with two short walls in a vertical direction on the periphery of a bottom plate. The plates 121, 122 and the two long wall plates 123, 124, wherein the two short wall plates 121, 122 respectively constitute the first end and the second end of the casing 10, wherein the short wall plate 121 is formed with a wind hole 125, the inner side The fan bracket 20 is provided, and an installation opening 126 is formed on the other short wall 122 for installing the transmission port bracket 30.

The circuit board 40 is located in the lower shell 12, on which a large number of electronic components (not shown in this figure) are provided. More than one electronic component is a heating element (such as a power transistor), and forms a heat sink with the heat sink module 50. In contact, the heating element can be attached to the heat sink module 50 by using thermally conductive glue. One end of the circuit board 40 corresponding to the first end of the casing 10 matches the shape of the fan bracket 20. Furthermore, the circuit board 40 is formed with a notch 41 and two beveled corners 42 at the end. The other end of the circuit board 40 is provided with the transmission port 14. The transmission port 14 is located under the transmission port support 30 and is covered by the transmission port support 30.

4 and 5, the fan bracket 20 is mainly formed with a side wall 22 on both sides of a rectangular hollow wind box 21, and a first air outlet 211 is formed on the inner end wall of the wind box 21. The outer end is open to form a fan chamber 212 for installing a fan 23 corresponding to the air hole 125 on the short wall 121 and the first air port 211 on the inner end wall of the wind box 21.

The retaining walls 22 on both sides are generally L-shaped from the top view, and their inner side matches the shape of the bottom of the bellows 21 and the corresponding end of the circuit board 40. Specifically, the retaining walls 22 on both sides form an oblique turn at its corners. The beveled edge 220 corresponds to the chamfered corner 42 at the two corners of the corresponding end of the circuit board 40. The bottom of the bellows 21 fits into the gap 41 at the corresponding end of the circuit board 40, thereby enabling the fan bracket 20 can be matched with the circuit board 40 in a shape-matching manner.

Furthermore, a fixing post 221 is formed on the inner surface of the retaining wall 22 on both sides of the fan bracket 20 respectively, for screw or other fixing elements to be coupled to the circuit board 40.

Please refer to Figures 4 and 6, the transmission port bracket 30 includes a front baffle 31 and a rear baffle 32. The front baffle 31 includes a vertical portion and a horizontal portion and is in an inverted L shape. Matchingly covers the short wall plate 122 of the casing 10, and an opening 310 is formed in the center of the vertical part. The opening 310 corresponds to the installation opening 126 on the short wall plate 122, and an inwardly extending opening 310 is formed inside the opening 310 The containing chamber 311 is adapted to cover the transmission port 14 provided on the circuit board 40 and expose the transmission port 14 through the opening 310.

The rear baffle 32 of the transmission port bracket 30 is located at the upper end of the front baffle 31, the rear baffle 32 is upright, and the center of the rear baffle 32 extends toward the inside to form a hollow air duct 320. In this embodiment, the air duct 320 has a rectangular shape, one end of which penetrates through the rear baffle 32 to form a second air outlet, and the other end corresponds to one end of the heat sink module 50 to connect with the closed air duct of the heat sink module 50.

The two ends of the tailgate 32 respectively extend outward to form a long and narrow fin 321. The inner sides of the two fins 321 are respectively formed with a fixing post 322. The fixing post 322 is coaxially formed with a fixing hole. The sheet 321 is located on the inner side of the short wall plate 122, and its fixing hole corresponds to the perforation formed in the short wall plate 122 of the casing 10 at a corresponding position for the corresponding screw or other fixing elements to be combined.

Please refer to Figures 4 and 7, the heat sink module 50 can be composed of a single aluminum extrusion or a set of two or more fins in pairs. Based on the requirements of insulation and/or matching the size of the chassis, In an embodiment, the heat sink module 50 includes four fins 51, 52 and a sealing structure. Among them, the four fins 51, 52 are paired in pairs, and each fin 51, 52 is in a vertical wall. The top and bottom ends respectively extend in the horizontal direction to form an upper part 511, 521 and a lower part 512, 522 that are opposite E-shaped cross-sections. The inner surface of the vertical wall forms a plurality of fin ribs 510, 520 to increase the heat dissipation area. More than one wedge post 513, 523 is respectively formed on the bottom surface of the lower part 512, 522 of each fin 51, 52 for the corresponding wedge hole formed in the corresponding position of the circuit board 40, so that the heat sink module 50 can be combined On the circuit board 40.

The two pairs of fins 51, 52 are arranged adjacent to each other in the long axis direction and form a gap. The aforementioned sealing structure is used to close the gap between the two opposite and adjacent fins 51, 52, so that the two pairs of adjacent fins The closed air duct is formed between 51 and 52. In this embodiment, the sealing structure includes an upper gasket 53, a lower gasket 54 and two side sealing layers 55, 56. The upper gasket 53 covers and is glued to the upper parts 511, 521 of the fins 51, 52. The top surface isolates the upper parts 511, 521 of the fins 51, 52 from the outside. The upper gasket 53 further makes its length longer than the heat sink module 50, which means that the two ends of the upper gasket 53 will extend to and The two ends of the heat sink module 50 are connected to the fan bracket 20 and the transmission port bracket 30 to cover the joints. Specifically, the upper gasket 53 protrudes beyond the two ends of the heat sink module 50 respectively. The cover is glued to the wind box 21 of the fan bracket 20 and the air pipe 320 of the transmission port bracket 30.

The lower gasket 54 covers the lower portions 512, 522 of the fins 51, 52. In this embodiment, the lower gasket 54 is the same length as the heat sink module 50, and two ends of the lower gasket 54 are respectively formed with extensions that are folded downwards. 541, the two extension portions 541 respectively cover the outer sidewalls of the two opposing fins 51 and 52. The two opposite long sides of the lower gasket 54 respectively extend upward to form a folded edge 542 to abut against the inner surface of the vertical wall of the fins 51 and 52.

The two side sealing layers 55 and 56 are respectively arranged between the two adjacent fins 51 and 52 on the same side. In the embodiment, one side sealing layer 55 is made of silicone infusion, and the other side sealing layer 56 is formed by A folded spacer, the side sealing layer 56 has a body that fits the width of the gap. The two sides of the body respectively extend outward to form two side wings 561 that are opposite L-shaped in a plan view, and the top of the body faces the two outer sides in a horizontal direction. The extensions respectively form a long and narrow latching piece 562. Since the body of the side sealing layer 56 can fit into the gap between the two adjacent fins 51, 52, the wings 561 on both sides can stop at the outer side of the vertical wall of the two fins 51, 52, and the latching piece 562 is The upper part 511 and 521 of the two adjacent fins 51 and 52 and the lower adjacent fin ribs 510 and 520 are clamped in between, thereby fixing the side barrier 56 between the two adjacent fins 51 and 52.

Please refer to FIG. 4, the sealing structure of the heat sink module 50 further includes a spacer 57 covering the circuit board 40 so that the heat sink module 50 is fixed to the circuit board through the spacer 57 On the circuit board 40, the isolation sheet 57 is used to form insulation between the heat sink module 50 and the circuit board 40.

From the above description, the specific structure of a preferred embodiment of the present invention can be understood. After the combination, as shown in the cross-sectional view of FIG. Between the air duct 320 of the transmission port bracket 30, and a closed air duct is provided therebetween, which means that the air flow drawn by the fan 23 from the casing 10 will pass through the closed air duct and entrain the heat sink module 50. The heat of the upper fins 51 and 52 is sent out by the air duct 320 of the transmission port bracket 30. Since the air flow is carried out inside the heat sink module 50, even if the drawn air flow carries moisture or dust, it will not touch the circuit. The board 40 satisfies the requirements of waterproof and dustproof.

As shown in FIG. 9, in this embodiment, the heat sink module 50 is horizontally arranged in the center of the circuit board 40, so the electronic components 43 that may generate heat on the circuit board 40 can be concentrated in the middle part through the circuit layout, and the The outer wall surfaces of the fins 51 and 52 of the heat sink module 50 form thermal contact for forced heat dissipation, whereby the air flow does not need to directly pass through the circuit board 40 to achieve the purpose of heat dissipation. As mentioned in the previous disclosure, the main reason is that the heat sink module 50 establishes a closed air duct between the fan bracket 20 and the transmission port bracket 30 to isolate the airflow in and out of the casing 10.

In order to ensure insulation and waterproof and dustproof, please refer to Figure 3, the casing 10 is further provided with an upper insulating layer 61 and a lower insulating layer 62, which cover the circuit board 40 and the heat sink module 50 therebetween The upper and lower insulating layers 61, 62 have opposite U-shaped cross-sections and have opposite side pieces 610, 620, respectively. The upper and lower insulating layers 61, 62 have two side pieces 610, 620 overlapping each other, and The two side pieces 610 of the upper insulating layer 61 are located on the outside of the two side pieces 620 of the lower insulating layer 62 (please refer to FIG. 10), thereby creating a labyrinth path. When moisture flows in from above, it can prevent The overlapped side pieces 610 and 620 of the upper and lower insulating layers 61 and 62 penetrate the circuit board 40.

In the above-mentioned preferred embodiment, the main focus is on the waterproof and dustproof of the internal electrical area of the casing 10. In another preferred embodiment of the present invention, the casing 10 is further required to be improved in sheet metal technology to achieve IP4X dust resistance. Grade (protection against 1.0mm diameter and larger solids). As shown in Figure 3, the casing 10 of the present invention is composed of an upper casing 11 and a lower casing 12. Avoid cracking and deformation of the thin metal plate in the foregoing process, which will form a crack arrest groove at the bending position, which is generally 1.5 times the thickness of the plate. Taking a plate of 1.0mm as an example, the width of the crack arrest groove must be 1.5mm. Under the circumstances, the upper shell 11 and the lower shell 12 after forming will leave a gap opening larger than 1.0mm at the bending part, and cannot reach the dustproof level of IP4X.

The present invention uses a special crack arrest groove design to solve the problem of excessive gap openings left by the crack arrest groove. As shown in FIG. Crack groove 101, the crack arrest groove 101 has an open end 102 and a groove bottom end 103, wherein the width of the groove bottom end 103 is smaller than the open end 102, and the crack arrest groove 101 is formed between the open end 102 and the groove bottom end 103 A chute wall 104 with a decreasing width. The specific size of the crack arrest groove 101 is such that the width of the bottom end 103 of the groove is 0.6 times the thickness of the substrate 100. When the thickness of the substrate 100 is 1.0mm, the bottom 103 of the crack arrest groove 101 can be reduced to 0.6mm, so that the gap opening left after the upper shell 11 and the lower shell 12 are formed is less than 0.6mm, and reaches IP4X The dustproof level.

The above are only the preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed in the preferred embodiments as above, it is not intended to limit the present invention. Anyone skilled in the art, Without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make slight changes or modification into equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention is based on the technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

10: Chassis 11: Upper shell 12: Lower shell 121, 122: short wall panels 123, 124: Long wall panels 125: wind hole 126: Mounting port 13: Grip 14: Transmission port 100: Substrate 101: Crack Arrest 102: open end 103: bottom end of the groove 104: chute wall 20: Fan bracket 21: Bellows 211: The First Outlet 212: Fan Room 22: side wall 220: Bevel 23: Fan 30: Transmission port bracket 31: Front bezel 310: open 311: room 32: Rear baffle 320: duct 321: Wing 322: fixed column 40: circuit board 41: gap 42: Bevel angle 43: electronic components 50: Heat sink module 51, 52: Fins 511, 521: upper part 512, 522: lower part 513, 523: Wedge 53: Upper gasket 54: Lower gasket 541: Extension 542: Folding 55, 56: side seal layer 561: Flanking 562: Card 57: spacer 61: Upper insulation layer 610, 620: side pieces 62: lower insulation layer

Fig. 1 is an external view of a preferred embodiment of the present invention. Fig. 2 is another perspective view of the appearance of a preferred embodiment of the present invention. Figure 3 is an exploded view (chassis part) of a preferred embodiment of the present invention. Figure 4 is another exploded view (inside the casing) of a preferred embodiment of the present invention. Fig. 5 is an external view of a fan bracket according to a preferred embodiment of the present invention. Fig. 6 is an external view of a transmission port bracket according to a preferred embodiment of the present invention. Fig. 7 is an exploded view of a heat sink module according to a preferred embodiment of the present invention. Figure 8 is a cross-sectional view of a preferred embodiment of the present invention. Figure 9 is a top plan view of a preferred embodiment of the present invention. Figure 10 is another cross-sectional view of a preferred embodiment of the present invention. Fig. 11 is a partial schematic diagram of another preferred embodiment of the present invention.

10: Chassis

11: Upper shell

12: Lower shell

121, 122: short wall panels

123, 124: Long wall panels

125: wind hole

126: Mounting port

14: Transmission port

20: Fan bracket

23: Fan

30: Transmission port bracket

40: circuit board

50: Heat sink module

53: Upper gasket

61: Upper insulation layer

610, 620: side pieces

62: lower insulation layer

Claims (13)

A power supply device with an isolated heat dissipation channel includes: A housing, in a rectangular shape, with a first end and a second end opposite to each other; A fan bracket arranged on the first end of the casing, a first air opening is formed on the fan bracket, and a fan is arranged inside the first air opening; A transmission port support, arranged at the second end of the casing, a second air opening is formed on the transmission port support, and the second air opening is opposite to the first air opening on the fan support; A heat sink module arranged in the casing, the heat sink module having a closed air duct, and the two ends of the air duct are respectively connected to the first air opening on the fan bracket and the second air opening on the transmission port bracket; A circuit board is arranged in the casing and located between the fan bracket and the transmission port bracket. The circuit board is provided with more than one electronic component, and the electronic component forms a thermal contact with the heat sink module. According to claim 1, the power supply device with isolated heat dissipation channels, the heat sink module includes a set of two or more pairs of two fins and a sealing structure, the two pairs of fins are respectively at the top of a vertical wall, The bottom ends respectively extend in the horizontal direction to form an upper part and a lower part with opposite E-shaped cross-sections, and a plurality of fin ribs are formed on the inner side of the vertical wall; The sealing structure includes an upper sealing gasket and a lower sealing gasket, the upper sealing gasket jointly covers and glues on the upper top surface of each fin, and the lower sealing gasket covers the lower part of each fin. According to claim 2, the power supply device with isolated heat dissipation channels, the heat sink module includes two pairs of fins, the two pairs of fins are arranged adjacent to each other in a long axis direction and form a gap, the sealing structure It further comprises two side sealing layers, and the two side sealing layers are respectively arranged between two adjacent fins on the same side. According to claim 3, the power supply device with isolated heat dissipation channels, wherein one side of the sealing layer has a body inserted into the gap, and two sides of the body respectively extend outward to form two side wings that are relatively L-shaped in a plan view The top of the main body extends horizontally toward the two outer sides to form a long and narrow latching piece, wherein the two side wings are suitable for stopping on the outer surface of the vertical wall of the two fins, and the latching piece is latched into two adjacent fins. The upper part of the sheet and the lower adjacent fin ribs. For the power supply device with isolated heat dissipation channels as described in claim 3, the lower gasket is the same length as the heat sink module, and two ends of the lower gasket respectively form a downwardly folded extension, and the opposite two long sides of the lower gasket are respectively upward Extend to form a folded edge to abut against the inner surface of the vertical wall of the fin. For the power supply device with an isolated heat dissipation channel as described in claim 3, the length of the upper gasket is greater than that of the heat sink module, and both ends of the upper gasket extend to the fan brackets connected to both ends of the heat sink module, On the transmission port bracket. According to the power supply device with an isolated heat dissipation channel as described in claim 1, the fan bracket is mainly formed with one side wall on both sides of a rectangular hollow wind box, and a first air outlet is formed on the inner end wall of the wind box , Its outer end is open to form a fan chamber for installing a fan; The retaining walls on both sides are L-shaped in a top view, and the inner side of the wall matches the shape of the bottom of the bellows and the end of the circuit board, and the end of the circuit board corresponding to the first end of the casing matches the shape of the fan bracket. According to claim 7 of the power supply device with isolated heat dissipation channels, the circuit board and the first end of the casing are formed with a notch and two chamfered corners at one end corresponding to the first end of the casing; The two side walls of the fan bracket are respectively formed with an oblique turning edge at the corners thereof, and the oblique turning edge corresponds to the chamfered corners of the two corners of the corresponding end of the circuit board, and the bottom of the bellows is matched to the corresponding end of the circuit board. Within the gap. According to claim 1, the power supply device with isolated heat dissipation channels, the transmission port bracket includes a front baffle and a rear baffle, the front baffle includes a vertical part and a horizontal part and is in an inverted L shape, which An opening is formed in the center of the vertical portion, and an inwardly extending chamber is formed inside the opening, and the chamber is suitable for covering the transmission port provided on the circuit board; The rear baffle of the transmission port bracket is located at the upper end of the front baffle. The rear baffle is upright. The center of the rear baffle extends toward the inside to form a hollow air duct. The other end of the second air outlet corresponds to one end of the heat sink module. For the power supply device with isolated heat dissipation channel as described in claim 9, the two ends of the rear baffle respectively extend outward to form a long and narrow fin. A fixing hole, one end of which penetrates the fin. The power supply device with isolated heat dissipation channels according to any one of claims 1 to 10, the casing includes an upper casing and a lower casing, the upper casing is in the form of a cover plate, and the lower casing is mainly a bottom plate Two short wall plates and two long wall plates are respectively arranged on the peripheral edge of the slab in the vertical direction, wherein the two short wall plates respectively constitute the first end and the second end of the cabinet, and one of the short wall plates is formed with a wind hole, the inner side The fan bracket is provided, and an installation opening is formed on the other short wall plate for installing the transmission port bracket. According to the power supply device with an isolated heat dissipation channel according to claim 11, the fan on the fan bracket corresponds to the air hole on the short wall plate and the first air hole on the inner end wall of the air box; The opening on the front baffle of the transmission port bracket corresponds to the installation opening on the other short wall plate, and the shape of the front baffle is matched to cover the short wall plate where the installation opening is formed; The two fins of the rear baffle are located inside the short wall plate where the installation opening is formed. According to claim 11, the power supply device with an isolated heat dissipation channel, the upper shell and the lower shell are respectively composed of a substrate, and more than one crack arrest groove is formed on the substrate, and the crack arrest groove has an opening And a groove bottom end; wherein the width of the groove bottom end is smaller than the opening end, and the crack arrest groove forms a chute wall with a decreasing width between the opening end and the groove bottom end.

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