KR102156738B1 - Power supply with through air tunnel - Google Patents

Abstract

The present invention relates to a power supply including a through-type air tunnel, and more specifically, to the power supply, which includes: a passive device removing electrical noise; a first power conversion unit for converting an input AC current into a DC current; a second power conversion unit for converting the voltage of the DC current output from the first power conversion unit; a case in which the passive device unit, the first power conversion unit and the second power conversion unit are built; and a cooling fan which flows outside air into the case, wherein the case has openings formed at both end surfaces in the longitudinal direction, and inside the case, the passive device, the first power conversion unit, and the second power conversion unit are penetrated therethrough to form an air tunnel, which are fluid lines connected to openings at both end surfaces of the case, thereby increasing the ratio of power output to volume.

Description

Power supply including through-type air tunnel{POWER SUPPLY WITH THROUGH AIR TUNNEL}

The present invention relates to a power supply including a through-type air tunnel, and more particularly, to a cooling structure of a power supply that converts and supplies an AC current coming from the outside into direct current that can be used by an electronic device.

In general, an electronic device receiving power from an external power source may include an electrical product operated by electrical energy and a power supply supplying power to the electrical product. Further, the power supply may be connected to an external power source such as a commercial power source, and may convert and supply a current received from an external power source into a current form that can be used by the electric product.

The power supply may include an EMI filter, an AC-DC rectifier, and a DC-DC converter. At this time, the EMI filter is an electromagnetic interference filter provided to prevent noise from an AC input line connected to an external power source from flowing into the case of the power supply. In addition, the AC-DC rectifier converts AC current from an external power source into a DC current, and the DC-DC converter converts the DC current converted by the AC-DC rectifier into a voltage that can be used by an electric product. In addition, the power supply may further include an output unit for supplying the DC current converted by the DC-DC converter to the electric product, and an output filter formed on the output unit.

In recent years, power supplies such as the above are often required for large capacity and high performance. Accordingly, in Korean Patent Publication No. 10-1764568 ("Power supply device and system for load sharing using an integrated communication module", 2017.08.10. Announcement), a system through a plurality of power supply modules connected in parallel is used. A technology capable of capacity expansion and load sharing is being disclosed.

Here, each power supply may generally be designed with an input voltage including a maximum output, an output voltage, a frequency, and a maximum output current during manufacture. In addition, the power supply may have a constant volume and may be disposed near the electric product. When a plurality of power supplies are disposed, more space is required. Accordingly, there is a need for a power supply that increases the power density (W/in ³ ) compared to the current volume and allows space utilization to be higher.

Korean Registered Patent Publication No. 10-1764568 ("Power supply device and system for load sharing using an integrated communication module") 2017.08.10. Announcement

The present invention relates to a power supply including a through-type air tunnel, and an object of the present invention is to increase the velocity of air introduced through the air tunnel, leading to an increase in the incidence of turbulent flow and the heat transfer coefficient, through which forced convection This is to provide a power supply having a structure in which major electronic components are mounted in a case with a smaller volume and an increase in power density by further improving cooling performance.

The power supply of the present invention for achieving the above object includes: a passive device for reducing electrical noise; A first power conversion unit connected to a power source to convert power from the power source into a first predetermined state; A second power conversion unit connected to the other end of the first power conversion unit to convert power in a first state into a second state; And a case including the passive element part, the first power conversion part, and the second power conversion part, and including openings at both end surfaces of the cooling fluid at both ends, wherein the case includes openings at both ends of the case and An air tunnel connected and forming a path of the cooling fluid therein, wherein the air tunnel passes through the passive device part, the first power conversion part and the second power conversion part, and the passive device part, the first It may be formed by at least some of the power conversion unit and the second power conversion unit.

In addition, at least one of the first power conversion unit and the second power conversion unit includes an inductor and a plurality of capacitors, and the inductor includes a core having a through hole and a coil wound on both sides of the core, The through hole of the core is arranged to be parallel to the air tunnel, and the plurality of capacitors may be arranged along the circumferential direction around the air tunnel extending in the longitudinal direction from the through hole of the core.

In addition, at least one of the first power conversion unit and the second power conversion unit may further include a heat pipe, and the heat pipe may form a part of a wall surface of the air tunnel so as to contact the cooling fluid. .

In addition, at least one of the first power conversion unit and the second power conversion unit includes a thin-film planar transformer in which a flat winding is formed on a printed circuit board, and the thin-film planar transformer is in the height direction of the case or It may be arranged to be deflected to one side in the width direction.

In addition, at least one of the first power conversion unit and the second power conversion unit includes a thin-film planar transformer having a flat winding formed on a pair of printed circuit boards, and the pair of the thin-film planar transformers control the air tunnel. The case may be disposed spaced apart from each other on both sides of the case in the height direction or the width direction.

In addition, the width of the planar thin-film transformer may correspond to the width of the case, and the planar thin-film transformer may be disposed to be deflected on one side or the other side in the height direction of the case around the air tunnel.

In addition, the passive element unit includes a pair of line filters and a plurality of capacitors, and the pair of passive elements are spaced apart from each other along a height direction or a width direction of the case to form a part of the air tunnel. The capacitor may be disposed on one side of the pair of passive elements.

In addition, the auxiliary power unit disposed inside the case and connected to the first power conversion unit or the second power conversion unit; further comprising, wherein the auxiliary power unit includes a plurality of capacitors, and the plurality of capacitors include the It may be disposed along the circumference with respect to the longitudinal axis of the case to form a part of the air tunnel.

In addition, the auxiliary power unit may further include a heat pipe, and the heat pipe may form a part of a wall surface of the air tunnel so as to contact the cooling fluid.

In addition, the air tunnel may be formed in a linear shape in which one opening and the other opening of the case are connected to each other.

It may further include a cooling fan coupled to at least one of the openings provided at both ends of the case.

In addition, the passive device unit, the first power conversion unit, and the second power conversion unit are arranged in series from one end to the other end of the case, a cooling fan is disposed inside the case, and the cooling fan includes the passive device unit, It may be disposed between any two of the first power conversion unit and the second power conversion unit.

Further, a plurality of cooling fans may be further included, and a plurality of the cooling fans may be spaced apart from each other along the length direction of the case.

In addition, the cooling fan may be formed in a pair, and the pair of cooling fans may be coupled to both ends of the case.

In addition, the case may have a through hole penetrating outward between both ends thereof, and a pair of the cooling fans may be disposed at one end side and the other end side of the through hole, respectively.

In addition, a cooling fan for discharging the fluid inside the case to the outside may be further included, and when the cooling fan is operated, the cooling fluid may be introduced into the case by negative pressure (陰壓).

It may further include a cooling fan including a first mode in which the blades rotate forward and a second mode in which the blades of the cooling fan rotate in reverse.

A power supply including a through-type air tunnel according to the present invention having the above configuration includes a passive element unit, a first power conversion unit, a second power conversion unit and one or more cooling fans in a case configured with a long axis in the longitudinal direction. By being arranged along the length direction of the case, there is an advantage in that power density is improved and space utilization is increased.

In addition, the present invention provides an optimized heat dissipation structure based on a heat pipe structure for major heating elements as well as cooling electronic components through an air tunnel penetrating along the length direction of the case, and flows through the cooling fan. There is an advantage in that the cooling efficiency by the external air is improved.

(

는 유량,

는 공기의 속도,

는 공기가 흐를 수 있는 터널의 단면적)에서 공기의 속도

는 단면적에 반비례한다. 예를 들어 양단 개구부(110,120) 중 어느 하나의 단면적이 가로×세로 (5 mm × 5 mm) 일 때 유입되는 공기의 속도는 에어터널이 없는 경우, 즉 양단 개구부(110,120) 중 어느 하나의 단면적이 (42 mm × 42 mm) 일 때보다 약 70배 증가한다. 유입되는 공기가 빨라지면 유동의 레이놀즈 수(Reynolds number, 관성력과 점성력의 비를 나타내는 무차원 수)가 증가하게 되어 에어터널 내 난류유동을 발생시킬 확률이 높아지게 된다. 또한 증가된 레이놀즈 수는 너셀 수(Nusselt number, 대류열전달과 전도열전달의 비를 나타내는 무차원수)를 증가시키고, 결국 소자와 공기사이의 열전달계수(heat transfer coefficient)를 높여 강제대류(forced convection)를 통한 냉각 효과를 극대화 시킬 수 있다.In addition, when an air tunnel penetrating along the longitudinal direction proposed in the present invention is used, the speed of air introduced through the cooling fan increases according to the law of mass conservation. In other words, since the flow rate of air supplied from the cooling fan is constant, the law of mass conservation

(

Is the flow rate,

Is the speed of the air,

Is the speed of air in the cross-sectional area of the tunnel through which air can flow)

Is inversely proportional to the cross-sectional area. For example, when the cross-sectional area of any one of the openings 110 and 120 at both ends is horizontal × vertical (5 mm × 5 mm), the velocity of the incoming air is when there is no air tunnel, that is, the cross-sectional area of any one of the openings 110 and 120 at both ends is (42 mm × 42 mm) increases about 70 times. As the incoming air increases, the Reynolds number (a dimensionless number representing the ratio of inertial force and viscous force) of the flow increases, and the probability of generating turbulent flow in the air tunnel increases. In addition, the increased Reynolds number increases the Nusselt number (a dimensionless number representing the ratio of convective heat transfer and conduction heat transfer), and eventually increases the heat transfer coefficient between the device and the air to increase the forced convection. The cooling effect can be maximized.

1 and 2 are perspective views of an electronic device according to the present invention.
3 is a perspective view of a power supply according to the present invention.
4 is a perspective view of a power supply with the upper surface of the case according to the present invention removed.
5 is an exploded perspective view of a power supply in which a part of the configuration according to the present invention is disassembled.
6 is a perspective view of the power supply cut based on the center in the width direction according to the present invention.
7 is a front cross-sectional view of a power supply according to the present invention.
8 is a circuit diagram of a power supply according to the present invention.
9 is a front cross-sectional view of a power supply according to various embodiments of the present invention.

Hereinafter, a power supply including a through-type air tunnel according to the present invention will be described in detail with reference to the accompanying drawings. The drawings introduced below are provided as examples in order to sufficiently convey the spirit of the present invention to those skilled in the art. Therefore, the present invention is not limited to the drawings presented below and may be embodied in other forms. Also, throughout the specification, the same reference numbers indicate the same elements.

If there are no other definitions in the technical and scientific terms used at this time, they have the meanings commonly understood by those of ordinary skill in the technical field to which this invention belongs, and the subject matter of the present invention is unnecessary in the following description and accompanying drawings. Descriptions of known functions and configurations that may be blurred will be omitted.

1 and 2 are related to a power supply including a through-type air tunnel according to the present invention, FIGS. 1 and 2 are perspective views of an electronic device.

Referring to FIGS. 1 and 2, the electronic device 1 operated by receiving external power is a power supply 10 that converts external power into a power supply type suitable for a system, and a power converted from the power supply 10. It may be composed of an electric product 20 to be supplied with. In Figs. 1 and 2, the electric product 20 is described as being formed as communication equipment, and the power supply 10 of the present invention is compatible with various electric products 20 such as computers and industrial products in addition to communication equipment. Since it may be connected, it is not limited thereto.

The power supply 10 may be provided with at least one or more to be connected to the electric product 20, and each power supply 10 may include a cooling fan so that the main elements therein are air cooled. In this case, each of FIGS. 1 and 2 shows perspective views in different configurations, and in the drawings to be described later, it will be described in more detail through the perspective view in FIG. 2.

3 to 6 are related to a power supply including a through-type air tunnel according to the present invention, FIG. 3 is a perspective view of the power supply, FIG. 4 is a perspective view of the power supply with the upper surface of the case removed, and FIG. 5 is a configuration Fig. 6 is an exploded perspective view of the power supply in which a part of is disassembled, and Fig. 6 is a perspective view of the power supply cut based on the center in the width direction.

First, referring to FIG. 3, the power supply 10 of the present invention may include a case 100, and the case 100 extends along a lengthwise direction to have one end opening 110 and an opening 110 at both ends of the lengthwise direction, respectively. The other end opening 120 may be formed. In addition, when the case 100 is formed in a rectangular parallelepiped shape, the length direction may be formed as a longer axis than the height or width direction. In addition, the case 100 may be configured in various shapes such as that the upper and lower portions are detachably coupled to each other, or elements disposed therein in a sliding manner are formed to be exposed to the outside.

Next, referring to FIG. 4, the present invention may include a passive device unit 200, a first power conversion unit 300, and a second power conversion unit 400 built in the case 100. At this time, the passive device unit 200 may be formed of an EMI filter that filters out noise mixed in a power frequency applied by an external power source such as a commercial power source or a battery. Further, the first power conversion unit 300 and the second power conversion unit 400 may be formed of an AC-DC rectifier and a DC-DC converter, respectively. In this case, the passive device unit 200, the first power conversion unit 300, and the second power conversion unit 400 may be sequentially built in the length direction of the case 100. What is shown or described in the following description is an example for more clarity, and the positions of the passive device unit 200, the first power conversion unit 300, and the second power conversion unit 400 are changed. Alternatively, the first power conversion unit 300 and the second power conversion unit 400 may be formed to perform unidirectional or bidirectional power conversion. Accordingly, the present invention does not limit the structure of the power supply of the present invention to the arrangement structure shown or described below. In addition, the power supply 10 of the present invention may further include a cooling fan 500 for supplying external air into the case 100. In this case, in FIG. 4, the cooling fan 500 coupled to the other end of the case 100 is removed and shown.

The first power conversion unit 300 may include an inductor 310 and a capacitor 320, and the second power conversion unit 400 may include a transformer 410. In addition, the present invention may further include an auxiliary power supply unit 600 for stabilizing the voltage of the DC current converted by the transformer 410 of the second power conversion unit 400. In this case, the auxiliary power supply unit 600 may include a plurality of capacitors 610. In addition, the present invention may further include a heat pipe to achieve more efficient heat dissipation for the main heating elements, and in FIG. 4, the first power conversion unit 300 and the auxiliary power supply unit 600 are respectively heat pipes 330 and 620. It is shown as an example that includes. And as shown, the passive device unit 200, the first power conversion unit 300, the second power conversion unit 400, and the auxiliary power supply unit 600 are sequentially arranged in the case 100 in the longitudinal direction. Although it may be arranged, the arrangement structure of the internal components can be changed during manufacture, so the present invention is not limited thereto.

Next, each configuration will be described in more detail with reference to FIG. 5. The passive device part 200 may include a pair of line filters 210 and a plurality of capacitors 220. In addition, the pair of line filters 210 may be spaced apart from each other in the width direction of the case 100, so that a space may be formed between the pair of line filters 210. In this case, the plurality of capacitors 220 may be formed in a rectangular box shape, and may be disposed above or below the pair of line filters 210 in the height direction. Here, the passive device 200 may further include a relay, an AC-CT sensor, a relay terminal (RT), a thermistor, and the like. The above configurations may be disposed on one side in the length direction of the pair of line filters 210, the relay is disposed on one side in the width direction, and the AC-CT sensor, relay terminal, and thermistor are disposed on the other side in the width direction. May be.

The first power conversion unit 300 may include an inductor 310 having a through hole H formed in the center of the core around which the coil C is wound. In addition, the inductor 310 may be disposed so that the through hole H is parallel to the longitudinal direction of the case 100. In this case, the inductor 310 may include a first inductor 311 and a second inductor 312, and the first inductor 311 and the second inductor 312 may each have a through hole ( H) may be disposed along the longitudinal direction of the case 100 to communicate with each other. In addition, the first power conversion unit 300 may include a plurality of capacitors 320. The plurality of capacitors 320 may be disposed with each other along the circumferential direction around the first flow space S1 communicating with the through hole H of the inductor 310. For example, when the capacitor 320 is configured in a cylindrical shape having a diameter-height ratio of 1:3, the height directions of the six capacitors 320 are arranged so as to be parallel to the height direction of the case 100, Three of the six capacitors 320 are disposed along the length direction of the case 100 on one side of the width direction of the case 100, and the other three capacitors among the six capacitors 320 320 may be disposed along the length direction of the case 100 on the other side in the width direction of the case 100. In addition, capacitors 320 are further disposed on the upper and lower sides of the first flow space S1, respectively, and the height direction of the capacitor 320 may be disposed parallel to the length direction of the case 100. In addition, the first power conversion unit 300 may further include a heat pipe 330, and a switch, which is a main heating element, may be coupled to the heat pipe 330. In addition, the heat pipe 330 may be formed in a “c” shape with an open portion facing upward to form a second flow space (S2), and the height direction of the heat pipe 330 is the case 100 Three capacitors 320 may be disposed in parallel with the longitudinal direction of ).

The second power conversion unit 400 may include at least one transformer 410. In addition, the transformer 410 may be formed of a thin-film planar transformer having a laminate structure using a printed circuit board. In addition, the transformer 410 may be disposed to be deflected on one side of the case 100 in the height direction or the width direction. In addition, the transformers 410 may be formed of a pair and may be spaced apart from each other on both sides in the height direction or the width direction, and a gap G spaced apart by a predetermined distance is formed between the pair of transformers 410, It may be formed to pass a fluid through the gap (G).

The auxiliary power supply unit 600 may include a plurality of capacitors 610. At this time, the plurality of capacitors 610 of the auxiliary power supply unit 600 are also disposed along the circumferential direction around the first flow space S1, like the plurality of capacitors 320 of the first power conversion unit 300 Can be. That is, the height direction of the six cylindrical capacitors 610 is arranged parallel to the height direction of the case 100, but three capacitors 610 of the six capacitors 610 have the width of the case 100 The length of the case 100 is disposed on one side of the direction along the length direction of the case 100, and the other three capacitors 610 of the six capacitors 610 are disposed on the other side in the width direction of the case 100 Can be arranged along the direction. Further, capacitors 610 are further disposed on the upper and lower sides of the first flow space S1, respectively, and the height direction of the capacitor 610 may be disposed parallel to the length direction of the case 100. Here, some of the capacitors 610 of the six capacitors 610 are excluded, and an auxiliary transformer made of a PQ core and a primary coil may be disposed at some of the capacitors 610. In addition, the auxiliary power supply unit 600 may further include a heat pipe 620, and a switch, which is a main heating element, may be coupled to the heat pipe 620. In addition, the heat pipe 620 may be formed in a "c" shape with an open portion facing upward to form a second flow space (S2), and the height direction of the heat pipe 620 is the case 100 Three capacitors 610 may be disposed in parallel with the longitudinal direction of ).

Next, referring to Figure 6, the present invention is the case by the arrangement structure of the passive device unit 200, the first power conversion unit 300, the second power conversion unit 400 and the auxiliary power supply unit 600 described above ( It is parallel to the longitudinal direction of 100), but an air tunnel penetrating the above components may be formed. In addition, when external air is introduced by the cooling fan 500 coupled to the case 100, it flows along the air tunnel, thereby cooling the elements of the power supply. Here, in the present invention, the air tunnel may be formed by a part of the passive device unit 200, the first power conversion unit 300, the second power conversion unit 400, and the auxiliary power supply unit 600. have.

7 and 8 are related to a power supply including a through-type air tunnel according to the present invention, FIG. 7 is a front cross-sectional view of the power supply, and FIG. 8 is a circuit diagram of the power supply.

7 and 8, in the present invention, the inside of the case 100 may be divided into a first hollow portion 101 and a second hollow portion 102 by the printed circuit board 130. In this case, the first hollow part 101 may be disposed above the printed circuit board 130, and the second hollow part 102 may be disposed below the printed circuit board 130. And the above-described passive device unit 200, the first power conversion unit 300, the second power conversion unit 400 and the auxiliary power supply unit 600 are disposed on the first hollow unit 101, the printed circuit It may be mounted on the substrate 130 and electrically connected. At this time, the cooling fan 500 is coupled to the other end opening 120 of the case 100 as described above, and the external air introduced by the cooling fan 500 is on the first hollow part 101. Through the air tunnel formed in the arrangement can be penetrated.

Here, the first power conversion unit 300 may further include a transistor including a switch 340, and the switch 340 of the transistor may be coupled to a lower surface of the printed circuit board 130. . In addition, the heat pipe 330 of the first power conversion unit 300 may be coupled on the upper surface of the printed circuit board 130 at a corresponding position to be provided to maintain heat dissipation performance for the main heating element. At this time, the switch 340 may be formed of a GaN switch. In addition, the auxiliary power supply unit 600 may further include a transistor including a switch 630, and the switch 630 is a heat pipe 620 of the auxiliary power supply unit 600 on a lower surface of the printed circuit board 130. May be combined on the upper surface of the corresponding position.

In addition, in the present invention, the cooling fan 500 may be configured to supply fluid to both the first hollow portion 101 and the second hollow portion 102, and the one end opening 110 is the first A first opening 111 connected to the hollow part 101 and a second opening 112 connected to the second hollow part 102 may be included. Alternatively, in the present invention, the second opening 112 is sealed, and the elements on the second hollow part 102 in contact with the heat pipes 330 and 620 are between the first opening 111 and the cooling fan 500. It may be configured to be cooled by the flowing fluid.

The present invention may include a first mode in which the blade 510 of the cooling fan 500 rotates in one direction and a second mode in which the blade 510 rotates in a reverse direction. In this case, the first mode and the second mode may be controlled to rotate the blade 510 in a reverse direction by converting poles connected to the cooling fan 500 to each other. In this case, the first mode and the second mode may be formed to be variable at each set time through a separate MCU, or when a control signal is input from an external terminal, the rotation direction may be changed. Accordingly, in the present invention, an effect of discharging foreign substances accumulated in the case 100 to the outside may be generated.

9 is a power supply including a through-type air tunnel according to various embodiments of the present invention, and FIGS. 9-(a) to 9-(d) are front cross-sectional views of the power supply, respectively.

First, referring to FIG. 9-(a), the cooling fan 500 of the present invention may be coupled to both one end surface and the other end surface of the case 100. In addition, the cooling fan 500 may be provided to allow external air to flow from the other end to one end, so that the external air penetrates and cools the elements disposed inside the case 100.

Next, referring to FIG. 9-(b), the cooling fan 500 of the present invention is coupled to both one end and the other end of the case 100, and penetrates to the outside at the center side in the longitudinal direction of the case 100. A through hole may be formed. Accordingly, external air supplied by the pair of cooling fans 500 is discharged to the through-hole through elements respectively disposed at both ends of the case 100, thereby enabling more efficient cooling. Alternatively, a pair of the cooling fans 500 may be provided to discharge the internal fluid of the case 100 to the outside, and the cooling fluid may flow into the through hole of the case 100.

Next, referring to FIG. 9-(c), the cooling fan 500 of the present invention may be coupled to one end of the case 100, and the cooling fan 500 may be formed to discharge fluid to one end. That is, the cooling fan 500 discharges the heated fluid inside the case 100 to the outside, but when a negative pressure is generated inside the case 100, a low temperature external air is supplied from the other end. It can be formed to receive.

Next, referring to FIG. 9-(d), the cooling fan 500 of the present invention may be disposed inside the case 100. In this case, between the two components selected from the passive device unit 200, the first power conversion unit 300, the second power conversion unit 400, and the auxiliary power supply unit 600 sequentially disposed inside the case 100 Can be placed. In addition, the cooling fan 500 may be formed in plural and disposed between the passive device unit 200, the first power conversion unit 300, the second power conversion unit 400, and the auxiliary power supply unit 600. . In this case, the present invention may be formed to improve cooling efficiency for main elements by the cooling fan 500 disposed therebetween. For example, a swirl is generated in a region where the fluid exits from the cooling fan 500 to form a vortex, and a region where the fluid enters the cooling fan 500 flows linearly. Accordingly. In the present invention, the cooling fan 500 is disposed so as to be relatively adjacent to components in which cooling is to be concentrated, and intensive cooling for major heating elements is performed, thereby improving efficiency.

As described above, in the present invention, specific matters such as specific components and the like have been described with reference to the limited embodiment drawings, but this is provided only to help a more general understanding of the present invention, and the present invention is limited to the above-described embodiment. It is not, and those of ordinary skill in the field to which the present invention belongs can make various modifications and variations from this description.

Therefore, the spirit of the present invention is limited to the described embodiments and should not be determined, and all things having equivalent or equivalent modifications to the claims as well as the claims to be described later belong to the scope of the spirit of the present invention. will be.

C: coil H: through hole
S1: first flow space S2: second flow space
1: electronic equipment
10: power supply
20: electrical appliances
100: case
101: first hollow portion 102: second hollow portion
110: one opening
111: first opening 112: second opening
120: the other end opening 130: printed circuit board
140: resonance capacitor
200: passive device
210: line filter 220: capacitor
300: first power conversion unit
310: inductor
311: 1st inductor 312: 2nd inductor
320: capacitor 330: heat pipe
340: switch
400: second power conversion unit 410: transformer
500: cooling fan
600: auxiliary power supply
610: capacitor 620: heat pipe
630: switch

Claims (17)

A passive device for reducing electrical noise;
A first power conversion unit connected to a power source to convert power from the power source into a first predetermined state;
A second power conversion unit connected to the other end of the first power conversion unit to convert power in a first state into a second state; And
Includes; a case including the passive element unit, the first power conversion unit and the second power conversion unit built-in, and including openings at both ends of the cooling fluid inlet and outlet, and,
The case,
An air tunnel connected to the openings at both ends of the case and forming a path for the cooling fluid therein,
The air tunnel passes through the passive device unit, the first power conversion unit and the second power conversion unit,
At least one of the first power conversion unit and the second power conversion unit includes an inductor and a plurality of capacitors,
The inductor is
Including a core having a through hole and a coil wound on both sides of the core,
The through hole of the core is arranged to be parallel to the air tunnel,
The plurality of capacitors,
Power supply, characterized in that arranged along the circumferential direction around the air tunnel extending in the longitudinal direction from the through hole of the core.
delete The method of claim 1,
At least one of the first power conversion unit and the second power conversion unit further comprises a heat pipe,
The power supply, characterized in that the heat pipe forms a part of a wall surface of the air tunnel so that it can contact the cooling fluid.
A passive device for reducing electrical noise;
A first power conversion unit connected to a power source to convert power from the power source into a first predetermined state;
A second power conversion unit connected to the other end of the first power conversion unit to convert power in a first state into a second state; And
Includes; a case including the passive element unit, the first power conversion unit and the second power conversion unit built-in, and including openings at both ends of the cooling fluid inlet and outlet, and,
The case,
An air tunnel connected to the openings at both ends of the case and forming a path for the cooling fluid therein,
The air tunnel passes through the passive device unit, the first power conversion unit and the second power conversion unit,
At least one of the first power conversion unit and the second power conversion unit includes a thin film planar transformer having a flat winding formed on a printed circuit board,
The power supply, characterized in that the thin-film planar transformer is arranged to be deflected in a height direction or a width direction of the case.
A passive device for reducing electrical noise;
A first power conversion unit connected to a power source to convert power from the power source into a first predetermined state;
A second power conversion unit connected to the other end of the first power conversion unit to convert power in a first state into a second state; And
Includes; a case including the passive element unit, the first power conversion unit and the second power conversion unit built-in, and including openings at both ends of the cooling fluid inlet and outlet, and,
The case,
An air tunnel connected to the openings at both ends of the case and forming a path for the cooling fluid therein,
The air tunnel passes through the passive device unit, the first power conversion unit and the second power conversion unit,
At least one of the first power conversion unit and the second power conversion unit includes a thin-film planar transformer having a flat winding formed on a pair of printed circuit boards,
A power supply, characterized in that a pair of the thin-film planar transformers are spaced apart from each other on both sides of the case in a height direction or a width direction with respect to the air tunnel.
The method of claim 4,
The width of the thin-film planar transformer corresponds to the width of the case,
The power supply, characterized in that the thin-film planar transformer is arranged to be deflected on one side or the other side in the height direction of the case with the air tunnel as the center.
A passive device for reducing electrical noise;
A first power conversion unit connected to a power source to convert power from the power source into a first predetermined state;
A second power conversion unit connected to the other end of the first power conversion unit to convert power in a first state into a second state; And
Includes; a case including the passive element unit, the first power conversion unit and the second power conversion unit built-in, and including openings at both ends of the cooling fluid inlet and outlet, and,
The case,
An air tunnel connected to the openings at both ends of the case and forming a path for the cooling fluid therein,
The air tunnel passes through the passive device unit, the first power conversion unit and the second power conversion unit,
The passive device unit includes a pair of line filters and a plurality of capacitors,
A pair of passive elements are spaced apart from each other along a height direction or a width direction of the case to form a part of the air tunnel,
A power supply, characterized in that the plurality of capacitors are disposed on one side of the pair of passive elements.
A passive device for reducing electrical noise;
A first power conversion unit connected to a power source to convert power from the power source into a first predetermined state;
A second power conversion unit connected to the other end of the first power conversion unit to convert power in a first state into a second state;
A case including the passive element part, the first power conversion part, and the second power conversion part, and including openings at both end surfaces of the cooling fluid; And
Is disposed inside the case, the auxiliary power unit connected to the first power conversion unit or the second power conversion unit; further includes,
The case,
An air tunnel connected to the openings at both ends of the case and forming a path for the cooling fluid therein,
The air tunnel passes through the passive device unit, the first power conversion unit and the second power conversion unit,
The auxiliary power unit includes a plurality of capacitors,
A power supply, characterized in that the plurality of capacitors are disposed along a circumference with respect to a longitudinal axis of the case to form a part of the air tunnel.
The method of claim 8,
The auxiliary power unit further includes a heat pipe,
The power supply, characterized in that the heat pipe forms a part of a wall surface of the air tunnel so that it can contact the cooling fluid.
The method according to any one of claims 1, 3 to 9,
The air tunnel is a power supply, characterized in that formed in a straight line in which one opening and the other opening of the case are connected to each other.
The method of claim 10,
And a cooling fan coupled to at least one of openings provided at both ends of the case.
The method of claim 10,
The passive device part, the first power conversion part, and the second power conversion part are arranged in series from one end of the case to the other end,
A cooling fan is disposed inside the case,
The cooling fan is a power supply, characterized in that disposed between any two of the passive device unit, the first power conversion unit and the second power conversion unit.
The method of claim 10,
It further includes a plurality of cooling fans;
A power supply, characterized in that a plurality of the cooling fans are spaced apart from each other along the longitudinal direction of the case.
The method of claim 13,
The cooling fan consists of a pair,
A power supply, characterized in that a pair of the cooling fans are coupled to both ends of the case.
The method of claim 14,
The case is formed with a through hole penetrating outward between both ends,
A power supply, characterized in that a pair of the cooling fans are disposed at one end side and the other end side of the through hole, respectively.
The method of claim 10,
It further includes; a cooling fan for discharging the fluid inside the case to the outside,
A power supply, characterized in that, when the cooling fan is operated, a cooling fluid is introduced into the case by negative pressure.
The method of claim 10,
The power supply further comprising a; cooling fan including a first mode in which the blade rotates forward and a second mode in which the blade rotates in reverse.

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