KR102454400B1 - Heat Emission Structure and Cooling Device using the same - Google Patents

Abstract

The present invention relates to a heat dissipating structure capable of effectively dissipating the heat of a transformer and a cooling device using the same, and specifically, a transformer that transforms a high voltage into a low voltage, and is formed on both sides of the transformer to correspond to each other It is formed on the upper part of the core and the transformer, and includes a clamp for releasing the core and dissipating heat.

Description

Heat emission structure and cooling device using the same

The present invention relates to a heat dissipating structure capable of effectively dissipating the heat of a transformer and a cooling device using the same.

Patent Document 001 discloses a DC-DC converter unit having two channels connected to the output of the high voltage battery and receiving power from the high voltage battery and converting it into power for charging the low voltage battery; and an output unit connected to an output of each of the two-channel DC-DC converter units and connected to the low-voltage battery, wherein each of the two-channel DC-DC converter units: receiving power from the high-voltage battery a switching unit for switching by phase difference; a transformer unit connected to an output terminal of the switching unit to drop a voltage of the output of the switching unit; a rectifying unit rectifying the output from the transformer unit and converting it into a DC voltage; and filtering the output of the rectifying unit and providing a technology including a filter unit connected to the output unit.

Patent Document 002 is an input unit that corrects the power factor of the input power AC power to 0.9 to 1 and then rectifies and outputs the DC power. After receiving the output DC power of the input unit, synchronous rectification and active clamping are performed to achieve zero voltage switching. an output unit having an active clamp snubber circuit and converting DC-DC to a voltage required for charging the battery and outputting it; and a bias supply unit for supplying power for driving the input unit and the output unit, wherein the output unit is configured to include a full-bridge circuit for zero voltage switching, and each leg of the bridge circuit is fixed at 50% It is configured to be driven by two complementary PWM signals having a duty, and proposes a technology including an inverter unit having a first current transformer CT1 for short-circuit current detection of an output and a full bridge.

Patent Document 003 discloses a package substrate; the first component coupled to the pad of the package substrate corresponding to the first component with a plurality of first joint portions; a second component coupled to the pad of the package substrate corresponding to the first component with a plurality of second joint portions; and the third component coupled to the pad of the package substrate corresponding to a third component with a plurality of third joint portions, the first component positioned above the second component with respect to the lower package substrate, the The first component, the second component and the third component are all electrically connected through the package substrate, and the main molding material is a core module for molding the first component, the second component and the third component. technology that includes

Patent Document 004 is a modular power converter for providing power to a power consuming device, A core power conversion for receiving power from a power source and converting the power from power characteristics of a first sheet to a second set of power characteristics module The core power conversion module has at least one power conversion switch and an output connector; and an application-specific module adapted to removably couple to the output connector. .

KR 10-2013-0078386 A (July 10, 2013) KR 10-2020-0031437 A (March 24, 2020) KR 10-2014-0127156 A (November 03, 2014) KR 10-2006-0063696 A (June 12, 2006)

The present invention relates to a heat dissipating structure capable of effectively dissipating the heat of a transformer and a cooling device using the same.

In order to solve the problems of the prior inventions, the present invention is an invention for a heat dissipation structure, a transformer 100 for converting a high voltage to a low voltage; Cores 200 formed on both sides of the transformer 100 and formed to correspond to each other; It is formed on the upper part of the transformer 100, and the clamp 300 for releasing the core 200 and dissipating heat; consists of a configuration including a.

The present invention relates to a heat dissipation structure and a cooling device using the same, and one end of the clamp 300 is fixed to the invention comprising the transformer 100; the core 200; and the clamp 300. and a conductor 400 through which heat of the core 200 is conducted; It is formed at the lower end of the conductor 400, the fixing case 500 for fixing the transformer 100; is added.

The present invention is an invention for a heat dissipating structure and a cooling device using the same, and is formed in the clamp 300 in the invention consisting of the transformer 100;, the core 200; and the clamp 300; a fixing part 310 fixed to the conductor 400; an elastic part 320 bent downward from the fixing part 310 and preventing the core 200 from being separated by elasticity; A joint portion 330 that is bent from the end of the elastic portion 320 to the top and is in contact with the core 200 is added.

The present invention is an invention for a cooling device utilizing a heat dissipation structure, and the present invention consists of the transformer 100; the core 200; and the clamp 300; is formed, the inlet 620 into which the cooling water is introduced; It is formed to be spaced apart from the inlet 620, and the outlet 630 through which the coolant flows out; is added.

The present invention is an invention of a cooling device using a heat dissipation structure, and the inlet 620 and the outlet 630 in the invention consisting of the inlet 620; Ends are connected to each other, and a circulation unit 640 for circulating cooling water in the fixed case 500 is added.

According to the present invention, the heat generated in the transformer can be radiated to the outside as the core is in contact with the upper and lower portions of the transformer, respectively.

The present invention can conduct heat of the transformer to the outside through the clamp as the clamp is coupled to the core.

According to the present invention, as the clamp is bent to give an elastic force, it is possible to prevent the core from being separated by an external impact.

According to the present invention, as one end of the clamp is cut and formed, the joint area with the core can be constantly maintained.

The present invention is that the heat conducted through the clamp is cooled by a cooling device in which the cooling water circulates.

1 is a perspective view of a heat dissipation structure of the present invention.
Figure 2 is a plan view of the heat dissipation structure of the present invention.
3 to 4 are cross-sectional views of the heat dissipation structure shown in FIG. 2 .
Figure 5 is a perspective view showing a clamp of the present invention.
6 is an exploded perspective view of a cooling device using the heat dissipation structure of the present invention.

Hereinafter, the most preferred embodiment of the present invention will be described in detail in order to be described in detail enough to be easily practiced by those of ordinary skill in the art to which the present invention pertains.

The numbers cited in the examples below are not limited only to the objects of reference, and may be applied to all examples. An object that exhibits the same purpose and effect as the configuration presented in the embodiment corresponds to an equivalent replacement object. The higher-level concept presented in the examples includes sub-concept objects that are not described.

(Embodiment 1-1) The present invention provides a heat dissipation structure, comprising: a transformer 100 for converting a high voltage into a low voltage; Cores 200 formed on both sides of the transformer 100 to correspond to each other; It is formed on the upper part of the transformer 100, and a clamp 300 for disengaging the core 200 and dissipating heat.

(Embodiment 1-2) The heat dissipation structure of the present invention according to Embodiment 1-1, wherein the core 200 is formed in the upper and lower portions of the transformer 100, respectively; includes.

(Embodiment 1-3) The heat dissipation structure of the present invention according to Embodiment 1-2, wherein the core 200 is formed to correspond to each other on both sides of the transformer 100; includes.

(Embodiment 1-4) The heat dissipating structure of the present invention according to Embodiment 1-1, wherein the clamp 300 is formed of a selected one of aluminum, copper, and copper.

(Example 1-5) In the heat dissipation structure of the present invention, in Example 1-1, the clamp 300 absorbs the shock generated in the transformer 100 and the core 200 by elasticity includes ;

The present invention relates to a heat dissipating structure. Specifically, the heat dissipation structure is for cooling by discharging heat generated when a high voltage is converted to a low voltage in the transformer 100 used in electric vehicles and electronic equipment to the outside. In general, the transformer 100 in which the core 200 is installed cools the transformer 100 by forced or natural convection in order to dissipate heat generated when the voltage is transformed. To cool the transformer 100 by convection in this way, the transformer 100 must be exposed to the outside or a space in which the flow of convection is smooth must be formed. However, there is a problem in that cooling by convection is difficult in a location where space is narrow, such as an engine of an electric vehicle. Contrary to this, in the present invention, the clamp 300 made of a metal material such as aluminum, copper, or copper is in contact with the transformer 100 and the core 200 that generate heat to conduct heat to the outside, thereby cooling it. This can reduce space constraints and increase cooling efficiency by directly conducting heat to the outside.

This heat dissipation structure is formed so that the clamp 300 is in contact with the core 200 formed at the upper and lower portions of the transformer 100, respectively, so that the heat generated in the transformer 100 and the core 200 is radiated to the outside. The core 200 is formed in the upper and lower portions of the transformer 100, respectively, and at the same time formed to correspond to each other on both sides of the transformer 100, so that the clamp 300 emits heat with a constant contact area on both sides. At this time, the clamp 300 is to prevent the core 200 from being separated by fixing the core 200 by a certain elastic force. Here, the core 200 is not fixed to the transformer 100 but is formed in contact with it and may be displaced from the transformer 100 by repeated loads such as external shocks and vibrations. As such, the clamp 300 has an elastic force, and at the same time maintains the core 200 in close contact with the transformer 100 and at the same time serves as a buffer for the core 200 and the transformer 100 by external shock and vibration, and the transformer ( 100) and the heat generated in the core 200 is discharged to the outside.

Accordingly, the heat dissipating structure of the present invention has a feature in which the clamp 300 is formed to be in contact with the upper portion of the core 200 in order to dissipate the heat generated by the transformer 100 and the core 200 .

(Embodiment 2-1) The present invention relates to a heat dissipating structure, and in Embodiment 1-1, one end of the clamp 300 is fixed, and the heat of the core 200 is conducted by a conductor 400 ; It is formed at the lower end of the conductor 400, the fixing case 500 for fixing the transformer 100; includes.

(Embodiment 2-2) The heat dissipation structure of the present invention according to Embodiment 2-1, wherein the fixing case 500 is formed of a metal material, and fixing the conductor 400; includes.

(Embodiment 2-3) In Embodiment 2-2, the heat dissipation structure of the present invention is formed in the fixed case 500, and includes a plurality of mounts 510 for spacing the transformer 100 apart. do.

(Embodiment 2-4) The heat dissipation structure of the present invention according to Embodiment 2-3, wherein the mount 510 is formed of a metal material; includes.

(Example 2-5) The heat dissipation structure of the present invention according to Example 2-1, is formed in the conductor 400, the fastening portion 410 to which the clamp 300 is fastened; It is formed at the lower end of the fastening part 410, the conductive part 420 for conducting heat to the fixed case 500; includes.

(Embodiment 2-6) The heat dissipation structure of the present invention according to Embodiment 2-5, wherein the conductive part 420 is formed in a cross-sectional shape selected from among a square, a trapezoid, and an ellipse; includes.

The present invention relates to a heat dissipating structure, and specifically, a clamp 300 is formed on the upper end of the core 200 in order to dissipate the heat of the transformer 100 , and the heat conducted through the clamp 300 is the conductor 400 . ) to be conducted to the fixed case (500). In this heat dissipating structure, a fixed case 500 for fixing the transformer 100 is formed, and the fixed case 500 is opened to accommodate a cooling device 600 to be described later. And the fixed case 500 can be fixed by separating the transformer 100 from the fixed case 500 as the plurality of mounts 510 are formed at equal intervals. At this time, the mount 510 is formed at the same height as the size of the core 200 to prevent the core 200 formed at the lower end of the transformer 100 from being separated and at the same time heat generated from the transformer 100 is fixed in the case. It is induced to be delivered to (500). And a conductor 400 is formed on the upper side of the fixed case 500 , and the conductor 400 is formed higher than the transformer 100 and the core 200 as it extends upward from the fixed case 500 . The conductor 400 and the fixing case 500 are formed of a metal material so that heat conduction smoothly proceeds, and a fastening part 410 is formed on the upper part of the conductor 400 so that the fixing hardware 350 penetrates through the clamp 300 . A fixing groove for fixing the .

In addition, the conductor 400 is formed at the lower end of the fastening part 410 to form a conductive part 420 that conducts heat to the fixed case 500, and the conductive part 420 is preferably formed in a rectangular cross section, but is trapezoidal, It is formed such that the thermal conductivity increases as the cross section becomes wider as it goes downward, such as an ellipse or a curve. This means that as the width of the heat transferred from the clamp 300 is increased toward the lower portion of the conductor 400, the dispersed area increases, so that the thermal conductivity can be increased.

Therefore, in the heat dissipation structure of the present invention, as the fixing case 500 to which the clamp 300 for fixing the transformer 100 and the core 200 is fixed is formed, the heat generated in the transformer 100 and the core 200 is formed. has a feature that can be conducted to the fixed case (500).

(Embodiment 2-7) In Embodiment 2-5, the heat dissipation structure of the present invention is formed on the upper end of the fixed case 500, the upper case 520 to which the transformer 100 is fixed; and a lower case (530) formed to correspond to the upper case (520).

(Example 2-8) In Example 2-5, the heat dissipation structure of the present invention is formed between the upper case 520 and the lower case 530, and has thermal insulation performance inside the fixed case 500 A sealing material 540 to improve the; includes.

The present invention relates to a fixed case (500), specifically, the fixed case (500) is formed of a metal material to fix the transformer (100). In this fixed case 500, a mount 510 and a conductor 400 are formed to form an upper case 520 for fixing the transformer 100 and the clamp 300, and an upper case is formed at the lower end of the upper case 520. As the lower case 530 is formed in a shape corresponding to the 520, the upper case 520 and the lower case 530 are coupled. At this time, a sealing material 540 is formed between the upper case 520 and the lower case 530 to prevent the heat of the upper case 520 from being conducted to the lower case 530 and at the same time to discharge the internal heat to the outside. prevent it from becoming This can prevent the heat generated in the transformer 100 and the core 200 from being transferred to other devices as the lower case 530 is formed to be in contact with other devices.

(Example 3-1) The present invention relates to a heat dissipation structure, and in Example 2-1, a fixing part 310 formed in the clamp 300 and fixed to the conductor 400; an elastic part 320 bent downward from the fixing part 310 and preventing the core 200 from being separated by elasticity; It includes;

(Embodiment 3-2) The heat dissipating structure of the present invention according to Embodiment 3-1, wherein the fixing part 310 is fixed to the conductor 400 by a fixing hardware 350; includes.

(Embodiment 3-3) The heat dissipation structure of the present invention in Embodiment 3-1, the fixing part 310 includes a fixing plate through which the fixing hardware 350 passes; and an extension plate formed by bending from one end of the fixing plate to the upper end.

(Example 3-4) The heat dissipation structure of the present invention according to Example 3-3, wherein the extension plate extends vertically from the fixing plate.

(Example 3-5) In Example 3-4, the heat dissipating structure of the present invention includes a cutting groove 340 for separating one end of the joint portion 330 and the elastic portion 320 by cutting them. .

The present invention relates to a clamp 300 , and specifically, the clamp 300 is formed so that one end is in contact with the core 200 , and the other end is fixed to the conductor 400 , so that heat is conducted through the core 200 . It is conducted to the conductor 400 through the clamp 300 . The clamp 300 maintains the core 200 in contact with the transformer 100 by elasticity as it is bent at various angles in the conductor 400 . In addition, the clamp 300 is formed on the upper portion of the core 200 formed on both upper side surfaces of the transformer 100 , and applies elasticity to each of the cores 200 with a constant load.

In addition, in the clamp 300 , a fixing part 310 is formed and fixed to the conductor 400 by the fixing hardware 350 , and a through groove through which the fixing hardware 350 passes is formed, and the through groove is the conductor 400 . ) is formed to coincide with the fixing groove of In this case, the fixing part 310 is formed with a fixing plate through which the fixing hardware 350 passes, and an extension plate is vertically extended at one end of the fixing plate. In addition, the elastic part 320 extends toward the core 200 from the upper end of the extension plate, and the elastic part 320 is formed by bending the fixing part 310 and a predetermined angle roll. In addition, the elastic part 320 has a cutting groove 340 formed by cutting the center to a predetermined length at a position in contact with the core 200 , and the cutting groove 340 is formed from the end of the elastic part 320 to the upper end. It is also formed in the joint portion 330 that is bent to form a pre-bonding. As described above, the cutting groove 340 cuts the center of one end of the clamp 300 to keep the force acting on the core 200 constant on both sides, and at the same time, the transformer 100 and the core 200 vibrate due to external impact. When this occurs, the clamp 300 may absorb vibration from both sides according to the vibration.

Accordingly, the clamp 300 of the present invention is fixed to the conductor 400 and by fixing the core 200 , it conducts heat of the core 200 and at the same time alleviates the impact of the core 200 . .

(Example 3-6) In Example 3-4, the heat dissipating structure of the present invention, the elastic part 320 is formed to have a length of a long side 2 to 3 times longer than a length of a short side; includes.

(Example 3-7) In the heat dissipation structure of the present invention in Example 3-6, the angle between the elastic part 320 and the fixing part 310 increases as the length of the elastic part 320 increases. broadening; including

The present invention relates to an elastic part 320, and specifically, the elastic part 320 is a fixed part 310 and an elastic part 320 in which the angle of the fixing part 310 and the elastic part 320 is adjusted in order to constantly maintain the elastic force acting on the core 200. will be. When the angle between the fixed part 310 and the elastic part 320 is narrow, the elastic part 320 has a high area and elastic force in contact with the core 200 so that the core 200 exerts a high pressure on the transformer 100 . can be compressed with This may lower the efficiency of the core 200 and the transformer 100 , and the elastic part 320 should maintain a constant angle between the fixed part 310 and the elastic part 320 . At this time, the angle between the elastic part 320 and the fixed part 310 is widened as the length of the elastic part 320 increases, and the length of the elastic part 320 is formed to be 2-3 times longer than the length of the short side. The angle between the elastic part 320 and the fixing part 310 may be adjusted according to the area of the elastic part 320 .

Accordingly, the elastic part 320 has a characteristic of being able to maintain a constant angle with the fixing part 310 in order to fix the core 200 in the transformer 100 with a constant elastic force.

(Example 3-8) The heat dissipation structure of the present invention according to Example 3-1, is formed in the bonding portion 330, the bonding plate 331 in contact with the core 200; and a connecting plate 332 bent from the bonding plate 331 and connected to the elastic part 320 .

(Example 3-9) The heat dissipation structure of the present invention according to Example 3-8, wherein the bonding plate 331 is formed in a wavy shape to increase the area in contact with the core 200; includes; .

The present invention relates to the junction 330 , and specifically, the junction 330 may increase thermal conductivity according to an area in contact with the core 200 . In the bonding portion 330 , a bonding plate 331 in contact with the core 200 is formed, and the bonding plate 331 is formed in a wavy shape to increase an area in contact with the core 200 . At this time, as the bonding plate 331 is formed in a wavy shape, it is in contact with a plurality of line bonding, and even if the clamp 300 is deformed by an external impact, it is in contact without being separated from the core 200 . And the bonding plate 331 has a connecting plate 332 is formed and connected to the elastic part 320 , and the connecting plate 332 is bent in a curve from the front side of the bonding plate 331 to the rear surface of the bonding plate 331 . It extends in a spaced apart state and is coupled to the elastic part 320 . This is to generate an elastic force at an angle between the elastic part 320 and the fixed part 310 by an impact generated on the core 200 and to generate an elastic force in the bonding plate 331 and the connecting plate 332 at the same time. to be.

(Example 4-1) The present invention relates to a cooling device utilizing a heat dissipating structure, and in Examples 1-1 to 3-1, an inlet portion formed at the end of the fixed case 500 and into which cooling water is introduced (620); It is formed to be spaced apart from the inlet 620, and includes an outlet 630 through which cooling water flows out.

(Example 4-2) In Example 4-1, the cooling device using the heat dissipating structure of the present invention is coupled to the inlet 620 and the outlet 630, and the cooling water flows in and out. It includes a coupling device 610;

(Example 4-3) In Example 4-1, the cooling device using the heat dissipating structure of the present invention is the inlet 620 and the outlet 630 when the coupling device 610 is detached. stopping the circulation of cooling water;

(Example 4-4) In Example 4-1, the cooling device using the heat dissipation structure of the present invention is formed in the fixed case 500, and measures the cooling water and the temperature of the fixed case 500. It includes a temperature sensor.

The present invention relates to a cooling device utilizing a heat dissipating structure, and specifically, cooling water is introduced into the fixed case 500 to dissipate heat generated from the transformer 100 and the core 200 . The cooling device 600 cools the heat generated from the transformer 100 and the core 200 in a water-cooling manner, and the cooling water is introduced into the fixed case 500 in various ways to cool the heat. At this time, in the fixed case 500 , a sealing material 540 is formed so that the cooling water generated inside is not discharged to the outside, and one end of the fixed case 500 has an inlet 620 through which the cooling water flows and an outlet through which the cooling water flows. A portion 630 is formed. Cooling water is circulated inside the fixed case 500 by the inlet 620 and the outlet 630 to cool the heat generated in the transformer 100 and the core 200 to a constant temperature, and the fixed case 500 ), measure the temperature of the cooling water by the temperature sensor. At this time, the temperature of the transformer 100 and the core 200 can be predicted according to the temperature of the cooling water measured by the temperature sensor, or the circulation speed of the cooling water can be controlled by measuring the heat conducted from the transformer 100 and the core 200. have.

And a coupling device 610 is formed in the inlet 620 and the outlet 630 , and the coupling device 610 is formed of a pipe, and a supply pipe for supplying cooling water to the inlet 620 and the outlet 630 is provided. are combined At this time, when the coupling device 610 is separated from or separated from the inlet 620 and the outlet 630 , the inlet 620 and the outlet 630 are closed and the coolant inside the fixed case 500 is separated to the outside. prevent it from happening

(Example 5-1) The present invention relates to a cooling device using a heat dissipation structure, and in Example 4-1, the ends are connected to the inlet 620 and the outlet 630, respectively, and a circulation unit 640 for circulating cooling water in the fixed case 500 .

(Example 5-2) In Example 5-1, the cooling device using the heat dissipation structure of the present invention is formed in the circulation unit 640 and the circulation pipe is disposed in the fixing case 500 in a zigzag manner. (641);

(Example 5-3) The cooling device using the heat dissipation structure of the present invention according to Example 5-2, wherein the circulation pipe 641 is formed to extend into the inside of the conductor 400; including; do.

The present invention relates to a cooling device utilizing a heat dissipating structure, and specifically, a circulation unit 640 is formed inside the fixed case 500 to circulate cooling water. The cooling water is formed in a zigzag inside the fixed case 500 to form a circulation pipe 641 through which the cooling water is circulated. The circulation pipe 641 is formed of a metal material such as copper or copper having high thermal conductivity, but may also be used as a synthetic resin. The circulation pipe 641 is formed inside the fixing case 500 and at the same time extended to the inside of the conductor 400 fixing the clamp 300 to effectively cool the heat.

100: transformer 200: core
300: clamp 310: fixed part
320: elastic portion 330: joint portion
331: bonding plate 332: connecting plate
340: cutting groove 350: fixed hardware
400: conductor 410: fastening part
420: conduction unit 500: fixed case
510: mount 520: upper case
530: lower case 540: sealing material
600: cooling device 610: coupling device
620: inlet 630: outlet
640: circulation unit 641: circulation pipe

Claims (5)

a transformer 100 for converting a high voltage into a low voltage;
Cores 200 formed on both sides of the transformer 100 and formed to correspond to each other;
a clamp 300 formed on the transformer 100 and preventing the core 200 from being separated and dissipating heat; and
a conductor 400 fixing one end of the clamp 300 and conducting heat of the core 200;
It is formed at the lower end of the conductor 400, the fixing case 500 for fixing the transformer 100; includes;
The clamp 300 is
a fixing part 310 fixed to the conductor 400;
an elastic part 320 bent downward from the fixing part 310 and preventing the core 200 from being separated by elasticity;
a joint portion 330 bent from an end of the elastic portion 320 to an upper end and in contact with the core 200; and
The elastic part 320 is provided with a cutting groove 340 formed by cutting the center to a predetermined length at a position in contact with the core 200,
The junction 330 is,
a bonding plate 331 in contact with the core 200; and
a connecting plate 332 bent from the bonding plate 331 and connected to the elastic part 320;
The bonding plate 331 is formed in a wavy shape to increase the area in contact with the core 200,
The conductor 400 is
a fastening part 410 to which the clamp 300 is fastened;
A conductive part 420 formed at the lower end of the fastening part 410 and conducting heat to the fixed case 500; includes;
The conductive part 420 is a heat dissipating structure including a cross section formed to become wider as it goes downward.
delete delete The method according to claim 1, It is formed at the end of the fixed case (500), the inlet portion (620) to which the cooling water is introduced;
A cooling device using a heat dissipating structure including a; is formed to be spaced apart from the inlet 620, and an outlet 630 through which cooling water flows.
5. The method according to claim 4,
A cooling device using a heat dissipating structure comprising a; end is connected to the inlet 620 and the outlet 630, respectively, and a circulation unit 640 for circulating cooling water in the fixed case 500.

Images