KR200290273Y1 - Cooling device in charger for storage battery - Google Patents

Abstract

The cooling device for a large capacity battery charger according to the present invention attaches a plurality of first heat generating elements that generate heat by internal resistance to the cooling plate, respectively, and coincides with the length direction of the cooling plate to one side of the case. Cooling fan is formed in the through hole to form a through hole to discharge air from the inside of the case to the outside, and the air inlet is formed on the other side of the case in accordance with the length direction of the cooling plate to remove foreign substances contained in the air. The case is installed in accordance with the air flow line connecting the second heat generating element and the cooling fan so as to cool the plurality of second heat generating elements generating a small amount of heat is installed in the air inlet filtration And a suction port smaller than the air suction port.

Therefore, the present invention can easily reduce the temperature inside the case by easily discharging the air inside the case to the outside, and can easily protect a number of electrical and electronic elements installed in the case to maintain the performance of the capacitor Exert.

Description

COOLING DEVICE IN CHARGER FOR STORAGE BATTERY}

The present invention relates to a cooling device for a large capacity battery charger, and more particularly, to a cooling device for a large capacity battery charger that can easily reduce the internal temperature of the charger by discharging air from the inside of the charger to the outside. .

In general, the transportation means used in the industry, such as electric cars, indoor forklifts, etc. are often operated by electricity to improve the working environment or to prevent air pollution in the room. It is supplied.

Here, the charging capacitor can be charged by a large-capacity charger, and the charger has an internal junction of a rectifying element and a switching element so that a lot of heat is generated therein.

Thus, as shown in FIGS. 5 and 6, a conventional cooling device generates a lot of heat due to a bridge diode (101), an isolation gate bipolar transistor (IGBT) 102, and a fast recovery diode 103 (FRD). Therefore, the bridge diode 101, the IGBT 102 and the FRD 103 are spaced apart from each other to be installed on the upper surface of the cooling plate 104, and to provide air to one end of the cooling plate 104 ( Through-holes are formed in the side surface of the side 105 to forcibly transfer air from the outside to the inside of the through-holes, and the air transferred from the outside to the inside of the cooling plate 104 It is made of a structure for forming a plurality of outlets (105a) in the other side portion of the case 105 to be discharged to the outside through the end.

Therefore, the conventional cooling device lowers the temperature by installing a cooling plate to the front of the cooling fan to introduce air into the case by applying a wind directly to the heating element of the cooling plate to generate heat, thereby reducing the temperature. Some heating elements of the cooling plate installed at the location are efficiently cooled by the direct friction of the wind.However, several other heating elements away from the cooling fan or both sides of the cooling fan are not directly affected by the wind. And several heating elements could not be cooled efficiently at the same time,

In addition, when hot air is introduced into the case and passes through the heating element of the cooling plate to be discharged to the outside through the air outlet, some air is turned on the inside of the case and turned back inside the case. The cooling fan is installed inside to cool the heating element of the cooling fan. At this time, while the internal air is repeatedly circulated by the cooling fan, a certain amount of air continuously turns inside the case.

In this way, the hot air is not completely discharged through the cooling plate, and some air is discharged by the air introduced while turning the inside of the case. Therefore, a moving path of residual air is always formed in the case where a predetermined amount of hot air is turned. There is a closed end where the internal temperature of the whole case does not decrease, and the proximity of the cooling fan may have a cooling effect. However, the cooling efficiency decreases in the case away from the cooling fan or on both sides and the circumference of the cooling fan. There is also a problem that can reduce the cooling effect of the cooling plate by the hot air. As described above, in order to completely discharge the hot air remaining inside the case, a plurality of outlets, cooling fans, or a large capacity cooling fan may be configured. Forced air flows in and then cools the heating element Although it is possible to discharge the exhausted air to the outside, it is impossible to realize it due to the problem that a large amount of foreign substances such as dust are injected into the various outlets, and no matter how many outlets are formed, forced air is introduced from the outside to the inside. In this way, it is difficult to completely discharge the air, and some of the exhaust air is attached to the inner wall of the case, and it is not discharged to the outside. Since it is discharged after turning, the inside of the case is not always hot, but the cost increases, power consumption is high, and noise is generated when installing multiple cooling fans and bulky cooling fans.

The present invention is devised to solve the problems of the prior art as described above, the present invention is to completely discharge the heated air inside the charger so that the hot air does not remain inside the charger lowers the temperature of the whole inside the case The first and second heat generating elements are formed on the air flow line so that the air flowing in from the outside can be discharged through the first and second heat generating elements. Simultaneously, the air inlet is formed at a position where a plurality of heating elements are installed, thereby cooling the plurality of heating elements with natural inflow air from the outside, so that the cooling can be performed more efficiently.

1 is a perspective view of a charger for a large capacity battery to which a cooling device according to the present invention is applied;

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a cross-sectional view taken along the line B-B of FIG.

Figure 4 is a perspective view of the filtration member of the cooling device for a large capacity battery charger according to the present invention,

5 is a cross-sectional plan view of a cooling apparatus of a charger for a large capacity storage battery according to the related art;

6 is a side view of a cooling apparatus for a large capacity battery charger according to the related art.

<Description of the code | symbol about the principal part of drawing>

1: charger 2: case

3: bridge diode 4: IGBT

5: FRD 6: Controller

7: transformer 8: cooling plate

9: cooling fan 10: air intake

11 filtration member 11a: screw mounting portion

11b network 12 airflow line

13: suction port

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 to 3 is a view showing a cooling device for cooling the inside of the charger of the present invention, the cooling device of the present invention is a case of the charger (1) in the charger (1) for charging a large capacity storage battery used for industrial use (2) By cooling the internal space, electrical and electronic elements that generate heat due to internal resistance, such as bridge diodes (3), isolation gate bipolar transistors (IGBTs), fast recovery diodes (FRDs), and controllers (6) And the temperature inside the case 2 rising by the transformer 7 or the like.

That is, the cooling device of the present invention attaches a plurality of first heat generating baths that generate heat by internal resistance, that is, bridge diodes 3, IGBTs 4, and FRDs 5, respectively, spaced apart from the cooling plate 8, Through-holes are formed in one side of the case 2 in accordance with the longitudinal direction of the cooling plate 8, and a cooling fan 9 for discharging air from the inside of the case 2 to the outside is provided in the through-holes. The air inlet 10 includes a filtration member 11 for forming an air inlet 10 on the other side of the case 2 to match the longitudinal direction of the cooling plate 8 to filter foreign substances contained in the air. It consists of a structure that is installed on.

And the cooling device of the present invention is connected between the second heat generating element and the cooling fan (9) to cool a plurality of second heat generating elements that generate a small amount of heat, that is, the controller (6) and transformer (7) The inlet 13 is formed in the case 2 to be smaller than the air inlet 10 in correspondence with the air flow line 12.

On the other hand, the cooling fan 8 has the same structure as the conventional structure, and has a structure in which a large amount of wrinkles is formed on the side part to increase the heat generating area.

As shown in FIG. 4, the filtration member 11 is formed in a shape in which a screw mounting portion 11a is formed to be screwed with the case 2 at an edge portion, and a concentric circle is connected to a central portion thereof. It is a structure that is covered with a mesh-like net 11b as a whole, and does not filter fine foreign matters contained in air, but filters foreign matters of a larger size, so that a minimum air resistance is generated.

And the inlet 13 may be changed in position depending on the installation position of the second heating element, that is, the controller 6 or the transformer (7), which is the air formed between the cooling fan (9) and the second heating element By extending the flow line 12 is formed in the case 2 so as to be on this extension line, the outside air is formed to a size that can pass through the operation of the cooling fan (9).

In addition, the air inlet 11 is preferably formed above the position where the cooling fan 9 is installed so that the flowing air can cool a lot between the cooling plate 8 and the first heat generating element.

The cooling device of the large-capacity charger according to the present invention made as described above always discharges the hot air existing inside the case 2 by the heat generated from the plurality of first and second heat generating elements to the outside of the case 2. At the same time, the hot air does not remain inside and the air naturally introduced from the outside can be discharged to the outside through the first heat generating element and the second heat generating element by the cooling fan. The first and second heating elements can be cooled simultaneously.

That is, when the cooling fan 9 is operated, the air inside the case 2 is completely discharged first, and at the same time, most of the outside air is naturally introduced through the air inlet 10, and the case 2 is passed through the filtering member 11. Flows into the interior.

On the other hand, the rest of the outside air, that is, a small amount of outside air flows through the inlet 13, cools them while passing through the second heating element, that is, the transformer 7 and the controller 6, and through the cooling fan 9. It is discharged to the outside.

As such, the present invention naturally introduces air introduced into the case 2 through the air inlet 10 formed in the case 2 by the forced discharge force of the cooling fan 9 and is forced out to the outside at the same time. In this case, since the air flow line 12 is formed between each air inlet 10 and the cooling fan 9, a portion that constitutes a heating element on the air flow line 12 or where the heating element is installed as necessary. Air inlet 10 is formed in the air flow line 12 so that the air inlet 10 formed at each heating element position is always introduced to the natural air and at the same time by the discharge force of the cooling fan (9) The inflow of air is completely discharged through each heating element to cool the plurality of heating elements simultaneously so that no hot air remains inside the case, cooling the heating element and lowering the temperature inside the case. So that it enables kilsu sikilsu further increase the cooling effect of the heat generating element.

As described above, the present invention does not cool the cooling plate 9 by the method of directly injecting external air into the cooling fan 9 and frictionally winds on the cooling plate 8 as in the related art. The overall temperature inside the case 2 is lowered by completely discharging the hot air inside the case 2 whose temperature rises due to the heat generated by the first and second heat generating elements to the outside using the cooling fan 9. The air flows through the air inlet 10 and is discharged to the cooling fan 9 so that the cold air naturally introduced from the outside can be discharged to the cooling fan 9 through the first and second heat generating elements. The first and second heat generating elements are formed in the path to lower the temperature of the whole inside of the case (2), and the first and second heat generating elements are cooled by using the inflowing air. (2) External air inside It is characterized by the fact that the air inside the casing (2), which is naturally introduced, is forcibly discharged, as described above. Therefore, if only the air inlet 10 is formed at the site where a plurality of heating elements are installed, the air is naturally introduced and cooled. Since it is discharged to the outside after cooling through each heating element by the fan (9), there is an advantage that the cooling can be achieved only by the formation of the air inlet (10) at the position where the heating element is installed or any position of the user, the inside of the case (2) The dust and the like are discharged to the outside through the cooling fan 9 together with the discharged air, and it is possible to easily protect a large number of battery electronic elements installed in the case 2, thereby maintaining the performance of the battery. It is.

Claims (2)

In the charger for charging a large capacity storage battery used for industrial use in the cooling device of a large capacity battery charger for cooling the space inside the case of the charger, A plurality of first heat generating elements that generate heat by the internal resistance is attached to the cooling plate, respectively, The through-hole is formed in one side of the case in accordance with the longitudinal direction of the cooling plate to install a cooling fan in the through-hole to discharge air from the inside of the case, An air inlet is formed at the other side of the case in accordance with the lengthwise direction of the cooling plate, and a filtration member is installed at the air inlet to filter foreign substances contained in the air. Large capacity formed by forming a suction port smaller than the air inlet in the case in accordance with the air flow line connecting the second heating element and the cooling fan to cool the plurality of second heat generating element that generates a small amount of heat Cooling device for battery charger. The method of claim 1, The air suction port is a cooling device for a large capacity battery charger, characterized in that formed above the position where the cooling fan is installed so that a large amount of air flows between the cooling plate and the first heat generating element.