KR102562747B1 - Heat exchanger - Google Patents

Abstract

The embodiment includes a heat exchange unit in which a first heat exchange medium and a second heat exchange medium are heat exchanged with each other; a heating unit arranged to heat one side of the heat exchanging unit; and a fixing means for adhering the heating part to the heat exchanging part, wherein when the fixing means is removed, the heating part is released from the heat exchanging part. Accordingly, the heat exchanger can reduce the weight of the electric vehicle and the space occupied by the heat exchanger by integrally forming a heating unit that is easily detachably disposed on one side of the heat exchanger.

Description

Heat exchanger {HEAT EXCHANGER}

The embodiment relates to a heat exchanger. In detail, the embodiment relates to a heat exchanger in which a heat exchange unit capable of cooling the cooling water and a heating unit capable of heating the cooling water are integrally formed using cooling water for efficient thermal management of a battery included in an electric vehicle.

1 is a view showing a conventional system for performing efficient thermal management of a battery included in an electric vehicle by using cooling water in an air conditioning system of an electric vehicle.

Referring to FIG. 1 , a conventional electric vehicle may include a battery for supplying power to various electric devices and power supply for driving. The battery needs to maintain an appropriate temperature using cooling water in order to efficiently use the battery and minimize reduction in lifespan.

To this end, the air conditioning system of the electric vehicle may include a configuration for controlling the cooling water to have a preset temperature. For example, the air conditioning system may include a chiller (1) to lower the temperature of the cooling water. Also, the chiller 1 may cool the cooling water through heat exchange with the low-temperature refrigerant. Here, the air conditioning system may heat the cooling water by supplying heat to the cooling water by including a coolant heater 2 to increase the temperature of the cooling water.

That is, the air conditioning system of a conventional electric vehicle separately includes a chiller 1 capable of cooling cooling water and a cooling water heater 2 capable of heating cooling water, and as shown in FIG. The cooling water is cooled by transferring the cooling water to (1), and as shown in (b) of FIG. 1, the cooling water may be heated by transferring the cooling water to the cooling water heater 2.

Therefore, since the air conditioning system of the electric vehicle must separately include the chiller 1 and the cooling water heater 2 for controlling the temperature of the cooling water, a certain space is required in the air conditioning system of the electric vehicle. Accordingly, there is a problem of reducing driving efficiency of the electric vehicle by increasing the overall weight of the vehicle due to the installation of the chiller 1 and the coolant heater 2. In particular, since the electric vehicle needs to include the chiller 1 and the coolant heater 2, respectively, the production cost of the electric vehicle also increases.

In addition, a flow path for transporting the cooling water to the chiller 1, a flow path for transporting the cooling water to the cooling water heater 2, and a separate configuration for controlling the movement of the cooling water according to the transfer between the chiller 1 and the cooling water heater 2 are formed. Therefore, since the number of parts such as pipes for forming each flow path increases and the connection with the chiller 1 and the cooling water heater 2 increases, there is a problem in that the possibility of cooling water leaking inside the electric vehicle increases. .

Republic of Korea Patent Registration No. 10-0591141 (2006.06.12.)

The present invention according to an embodiment provides an integrated heat exchanger for cooling or heating cooling water for cooling or heating a battery provided in an electric vehicle.

Provided is a heat exchanger in which a heating function is additionally disposed in a detachable manner together with a heat exchange function of cooling water. Here, the heat exchanger provides an easily detachable coupler to easily add or release a heating function.

The problem to be solved by the present invention is not limited to the above-mentioned problems, and other problems not mentioned herein will be clearly understood by those skilled in the art from the following description.

According to the embodiment, the first heat exchange medium and the second heat exchange medium are heat-exchanged with each other; a heating unit arranged to heat one side of the heat exchanging unit; and a fixing means for bringing the heating unit into close contact with the heat exchanging part, and when the fixing means is removed, the heating part is achieved by a heat exchanger that is released from the heat exchanging part.

Here, the heating unit heater unit for generating surface heat; and a first pad disposed between the heater unit and the heat exchange unit, and contact thermal resistance between the heater unit and the heat exchange unit may be reduced by the first pad.

The heater unit may include a plate-shaped heating panel generating surface heat; and a case disposed to cover the heating element of the heating panel, and one side of the fixing means may press one area of the case.

The heater unit may further include a second pad disposed between the case and the heating panel, and the second pad may block current leaking from the heating panel.

Also, the second pad may increase contact thermal resistance between the heating panel and the case.

Here, the case may be formed of a synthetic resin material.

The heater unit may further include a sealing unit disposed on a frame of the heating panel along an outer surface of the heating element to surround the heating element of the heating panel.

In addition, the fixing means is a main body; Pressing parts bent downward to face each other at both ends of the main body; and a protrusion protruding from the pressing part, the pressing part being brought into contact to apply a predetermined load to one side of the heating part, and the protrusion may be coupled to a groove formed in the case.

On the other hand, the heat exchange unit upper plate; a plurality of middle plates stacked and disposed under the upper plate; and a lower plate disposed below the stacked middle plates, wherein the upper plate includes a first inlet through which the first heat exchange medium flows, a first outlet through which the first heat exchange medium is discharged, and a second inlet through which the first heat exchange medium is discharged. It may include a second inlet through which the heat exchange medium is introduced, and a second outlet through which the second heat exchange medium is discharged.

Here, the heat exchange unit further includes a support disposed below the lower plate,

A protrusion protruding downward from the heating panel may be coupled to the groove formed in the pedestal.

On the other hand, the first pad may include a plate-shaped first pad body; and a plurality of protrusions protruding from the first pad body toward the heat exchange unit, the protrusions being spaced apart in a vertical direction, and an end of the protrusion is a middle plate among the plurality of middle plates of the heat exchange unit through which coolant flows. can be contacted.

In addition, the second pad may include a plate-shaped second pad body; and a plurality of protrusions protruding from the second pad body toward the case, the protrusions being spaced apart in a vertical direction, and ends of the protrusions contacting the case.

In addition, the first heat exchange medium, which is a target for temperature control, is provided as cooling water for temperature control of a battery included in an electric vehicle, and the second heat exchange medium is provided as a refrigerant that exchanges heat with the cooling water, and the temperature of the refrigerant may be lower than the temperature of the cooling water.

The heat exchanger according to the embodiment may reduce the weight of the electric vehicle and the space occupied by the heat exchanger by integrally forming a heating unit that is easily detachably disposed on one side of the heat exchange unit. Accordingly, the electric vehicle can improve the degree of freedom in the design of the surrounding configuration of the heat exchanger.

In detail, the heat exchanger can reduce production cost and overall weight of the electric vehicle by eliminating parts such as pipes that are conventionally installed by arranging a heat exchanger and a heat pump.

In addition, by using a coupler that is easily detachable as a fixing means, it is possible to easily attach or release the close contact of the heating unit to the heat exchange unit. Accordingly, if the heating unit is removed, since it can be used as a conventional heat exchanger, the versatility of the heat exchanger according to the embodiment can be improved.

1 is a diagram showing a configuration for cooling and heating cooling water for temperature control of a battery in a conventional air conditioning system of an electric vehicle;
2 is a perspective view showing a heat exchanger according to an embodiment,
3 is an exploded perspective view showing a heat exchanger according to an embodiment;
4 is a view showing the coupling between protrusions of a heating panel of a heat exchanger and grooves formed on a pedestal of a heat exchanger according to an embodiment;
5 is an exploded perspective view showing a heat exchanger of a heat exchanger according to an embodiment;
6 is a perspective view showing a second pad of the heat exchanger according to the embodiment;
7 is a perspective view illustrating a first pad of a heat exchanger according to an embodiment.

Since the present invention can make various changes and have various embodiments, specific embodiments are illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as second and first may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a second element may be termed a first element, and similarly, a first element may be termed a second element, without departing from the scope of the present invention. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

In the description of the embodiment, in the case where one component is described as being formed “on or under” another component, the upper (above) or lower (below) (on or under) includes both those formed by direct contact between two components or by indirectly placing one or more other components between the two components. In addition, when expressed as 'on or under', it may include the meaning of not only the upward direction but also the downward direction based on one component.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings, but the same or corresponding components regardless of reference numerals are given the same reference numerals, and overlapping descriptions thereof will be omitted.

A water-cooled heat exchanger capable of performing both a cooling function of cooling the cooling water and a heating function of heating the cooling water may be used as the heat exchanger according to the embodiment of the present invention. Accordingly, the cooling water may cool or heat the battery of the electric vehicle.

2 is a perspective view showing a heat exchanger according to an embodiment, FIG. 3 is an exploded perspective view showing a heat exchanger according to an embodiment, and FIG. It is a diagram showing the combination of

Referring to FIGS. 2 to 4 , the heat exchanger 1 according to the embodiment heats a heat exchange unit 100 in which a first heat exchange medium and a second heat exchange medium heat-exchange, and at least one side of the heat exchange unit 100 is heated. It may include a heating unit 200 arranged to do so, and a fixing means 300 for bringing the heating unit 200 into close contact with the heat exchange unit 100. Here, the first heat exchange medium may be provided as cooling water that is a target for temperature control, and the second heat exchange medium may be provided as a refrigerant that exchanges heat with the first heat exchange medium. At this time, the temperature of the refrigerant may be lower than the temperature of the cooling water.

The air conditioning system of the electric vehicle includes a refrigerant circulation circuit in which refrigerant is circulated through a compressor (not shown), a condenser (not shown), an expander (not shown), and an evaporator (not shown), and a circulation pump (not shown). A cooling water circulation circuit for circulating water via a battery (not shown) may be included, and the heat exchanger 1 may be arranged to share a part of the cooling water circulation circuit with the refrigerant circulation circuit. Accordingly, the heat exchanger 1 may cool the battery using the water or electrically heat the water and then heat the battery using the heated water.

For example, the battery may be cooled using the water cooled by the heat exchanger 1 . When the battery is heated, the heat exchanger 1 drives the heating unit 200 to heat the water circulated inside the heat exchange unit 100, and the heated water is transported by the circulation pump. to preheat the battery.

The heat exchanging unit 100 allows heat exchange between the first heat exchanging medium and the second heat exchanging medium, which are introduced into the inside, of different types of heat exchanging media. Here, a plate type heat exchanger may be used as the heat exchanger 100 . Also, the heat exchange unit 100 may be called a chiller.

5 is an exploded perspective view showing a heat exchanger of the heat exchanger according to the embodiment.

Referring to FIG. 5 , the heat exchanging unit 100 is disposed on an upper plate 110, a plurality of middle plates 120 stacked under the upper plate 110, and a lower portion of the plurality of middle plates 120. It may include a lower plate 130 and a pedestal 140 disposed under the lower plate 130.

Each of the first heat exchange medium and the second heat exchange medium may be introduced or discharged through the upper plate 110 .

The upper plate 110 includes a first inlet 111 into which the first heat exchange medium is introduced, a first outlet 112 through which the first heat exchange medium is discharged, and a second inlet through which the second heat exchange medium is introduced. 113, and a second discharge part 114 through which the second heat exchange medium is discharged. Accordingly, the first heat exchanging medium introduced through the first inlet 111 may be discharged through the first outlet 112 after circulating inside the stacked middle plates 120 . The second heat exchanging medium introduced through the second inlet 113 may be discharged through the second outlet 114 after circulating inside the stacked middle plates 120 .

The plurality of middle plates 120 may be stacked and disposed on the lower side of the upper plate 110 in the vertical direction.

As the plurality of middle plates 120 are stacked and arranged, passages may be formed therein so that the first heat exchange medium and the second heat exchange medium may be individually circulated. At this time, the plurality of middle plates 120 are stacked so that the first heat exchange medium and the second heat exchange medium can alternately flow horizontally, thereby facilitating heat exchange.

For example, the plurality of middle plates 120 have first communication holes 121 formed in the vertical direction to communicate with the first inlet 111 of the upper plate 110 and the first outlet of the upper plate 110. It may include a second communication hole 122 formed in the vertical direction to communicate with (112). In addition, the plurality of middle plates 120 have third communication holes 123 formed in the vertical direction to communicate with the second inlet 113 of the upper plate 110 and the second outlet 114 of the upper plate 110. ) and a fourth communication hole 124 formed in the vertical direction to communicate with. Accordingly, the first heat exchange medium transported through the first communication hole 121 moves on the middle plate 120, exchanges heat with the second heat exchange medium, and then first discharges through the second communication hole 122. may be discharged to section 112 . Then, the second heat exchange medium transported through the third communication hole 123 moves on the middle plate 120 and exchanges heat with the first heat exchange medium, and passes through the fourth communication hole 124 to the second discharge unit. (114).

The lower plate 130 is disposed under the plurality of middle plates 120 to prevent the heat exchanging medium from leaking to the pedestal 140 .

The pedestal 140 may be disposed below the lower plate 130 .

The pedestal 140 may support the lower plate 130, and the heat exchanger 1 may be provided to be installed in an electric vehicle.

As shown in FIG. 5 , the pedestal 140 may include a concave groove 141 . At this time, the groove 141 formed in the pedestal 140 may be called a first groove. Here, the groove 141 may be formed in a recessed shape for coupling with the heating unit 200, but is not necessarily limited thereto. For example, a hole formed through the pedestal 140 may replace the groove 141 .

The heating unit 200 may heat one side of the heat exchange unit 100 . As shown in FIG. 2 , the heating unit 200 may be disposed on one side and the other side of the heat exchange unit 100 .

The heating unit 200 may be disposed to heat the first heat exchange medium of the heat exchange unit 100 . In detail, the heating unit 200 may be disposed to selectively heat only the middle plate 120 on which the first heat exchanging medium horizontally moves.

Here, the heating unit 200 may be provided as a single module. Accordingly, coupling and detachment of the heating unit 200 are easy, so that the heating unit 200 can be easily maintained and repaired. In addition, since the heating part 200 can be removed according to the purpose of the heat exchanger 1 and used like a conventional heat exchanger, the versatility of the heat exchanger 1 can be improved.

The first inlet 111, the first outlet 112, the second inlet 113, and the second outlet 114 are disposed on the upper plate 110 of the heat exchange unit 100 to reduce the heating area. Therefore, the heating unit 120 may be disposed to heat the side surface of the heat exchanging unit 100 . Preferably, a side surface of the heat exchanger 100 having a large area is preferably heated, but a side surface having a relatively small area may be heated in consideration of the arrangement of peripheral devices.

2 to 4 , the heating unit 200 may include a heater unit 210 generating surface heat and a first pad 220 disposed between the heater unit 210 and the heat exchange unit 100. .

The heater unit 210 may perform surface heating as power is applied.

The heater unit 210 may include a plate-shaped heating panel 211 that generates surface heat and a case 213 disposed to cover one side of the heating panel 211 . In addition, the heater unit 210 may further include a second pad 215 disposed between the heating panel 211 and the case 213 .

The heating panel 211 may include a plate-shaped frame 211a and a heating element 211b disposed on the frame 211a.

The frame 211a may support the heating element 211b. Also, heat generated by the heating element 211b may be transferred to the first pad 220 or the second pad 215 through the frame 211a.

At this time, the frame 211a may be formed in a plate shape, but is not necessarily limited thereto. For example, the frame 211a may be formed in a shape having a space in which the heating element 211b can be disposed, such as a window frame, so that the heating element 211b directly contacts the first pad 220 or the second pad 215. may be

The heating element 211b may generate surface heat. Here, the heating element 211b may be provided as an electric heater that generates heat when power is applied. For example, the heating element 211b may include a coil (not shown) that generates heat when power is applied. Accordingly, when power is applied to the coil, the coil may heat one side of the heat exchange unit 100 .

Meanwhile, the heating panel 211 may further include a protrusion 212 protruding downward. As shown in FIG. 4 , the protrusion 212 may protrude downward from the frame 211a. Here, the protrusion 212 formed on the heating panel 211 may be referred to as a first protrusion.

Also, the protrusion 212 may be coupled to the groove 141 formed in the pedestal 140 . Accordingly, the protrusion 212 can prevent the heating part 200 from being separated from the heat exchanging part 100 together with the fixing means 300 .

At this time, the protrusion 212 may be coupled by the groove 141 . As shown in FIG. 4 , an inclined surface 141a may be formed on the pedestal 140 to be inclined toward the inside of the groove 141 to guide the coupling of the protrusion 212 .

In addition, the combination of the protrusion 212 and the groove 141 determines the position of the heating unit 200 relative to the heat exchange unit 100 so that the heating unit 200 is positioned at a preset position relative to the heat exchange unit 100. to be placed in That is, the arrangement positions of the heat exchanger 100 and the heating unit 200 may be determined by combining the protrusion 212 and the groove 141 .

The case 213 may be disposed to cover one side of the heating panel 211 . Accordingly, the case 213 may prevent heat generated from the heating panel 211 from leaking to the outside.

In addition, the case 213 transmits the pressing force of the fixing means 300 to the heating panel 211 so that the heating panel 211 adheres to the heat exchanging unit 100 . In detail, the first pad 220 in surface contact with the heating panel 211 is brought into close contact with the heat exchanging unit 100 by the pressing force.

At this time, even if the heating unit 200 is pressed by the fixing means 300, the case 213 prevents the heating panel 211 from directly contacting the fixing means 300. As shown in FIG. 4 , the case 313 may be placed in contact with the frame 211a. Accordingly, the case 213 can prevent the heating panel 211 from being damaged by the pressing force of the fixing means 300 . In detail, the case 313 can prevent damage to the heating element 211b by the pressing force.

Meanwhile, the case 213 may be formed of a synthetic resin material having low thermal conductivity.

Accordingly, the case 213 can effectively prevent heat generated from the heating panel 211 from leaking out to the outside, thereby preventing the heat from being transferred to surrounding components. Accordingly, damage such as thermal deformation of the surrounding components due to the heat may be prevented.

In addition, when the case 213 is made of a synthetic resin material such as plastic in consideration of weight, the case 213 may include a plurality of ribs 213a to reinforce rigidity of the case 213 .

In addition, the case 213 may include a groove 213b coupled to the protrusion 330 of the fixing member 300 . The groove 213b may be concavely formed on one surface of the case 213 . Here, the groove 213b of the case 213 may be referred to as a second groove.

The second pad 215 may be disposed between the heating panel 211 and the case 213 to block current leaking from the heating panel 211 . Here, the second pad 215 may be a current blocking pad. For example, since the heating element 211b can be provided as an electric heater that generates heat when power is applied, a short circuit caused by leaking current can be blocked using the second pad 215 .

Meanwhile, the second pad 215 may prevent heat generated by the heating panel 211 from being transferred to the case 213 in addition to a function of blocking current leakage.

Here, the second pad 215 may be a heat blocking pad that blocks heat loss of the heating panel 211 . For example, the second pad 215 may be formed of a material having heat resistance. Accordingly, contact thermal resistance between the heating panel 211 and the case 213 may be increased by the second pad 215 .

Accordingly, the case 213 and the second pad 215 of the heat exchanger 1 may have a dual structure to block heat loss from the heating panel 211 .

Referring to FIGS. 3 and 4 , the second pad 215 may be disposed between the heating element 211b of the heating panel 211 and the case 213 . At this time, one surface of the second pad 215 may contact the heating panel 211 and the other surface may contact the case 213, but is not limited thereto. For example, an air gap capable of reducing a contact area is formed between the case 213 and the second pad 215 to further reduce heat loss.

Meanwhile, the second pad 215 may be formed in a shape capable of securing heat loss blocking capability and bearing capacity while reducing self-weight together with a function of blocking current leakage.

6 is a perspective view illustrating a second pad of the heat exchanger according to the embodiment.

Referring to FIG. 6 , the second pad 215 may include a plate-shaped second pad body 215a and a protrusion 215b protruding toward the inner surface of the case 213 . Here, the protruding portion 215b of the second pad 215 may be referred to as a second protruding portion. Also, the second pad body 215a and the protrusion 215b may be integrally formed.

The second pad body 215a may be formed in a plate shape, and one surface may be in surface contact with the heating panel 211 .

The protrusion 215b of the second pad 215 may protrude from the other surface of the second pad body 215a toward the inner surface of the case 213 . In this case, a plurality of the protrusions 215b may be spaced apart in the vertical direction and disposed on the other surface of the second pad body 215a. Also, an end of the protrusion 215b may come into contact with an inner surface of the case 213 .

Accordingly, the second pad 215 makes surface contact between the second pad body 215a and the heating panel 211 so that the pressing force can be evenly distributed to the heating element 211b. In addition, the second pad 215 may form an air gap between the protrusions 215b by arranging the plurality of protrusions 215b to be spaced apart from each other in the vertical direction. Accordingly, the ability of the second pad 215 to block heat loss may be improved.

That is, the second pad 215 reduces its own weight by using a plurality of protrusions 215b disposed vertically and spaced apart from the second pad body 215a, while reducing heat loss blocking ability and bearing capacity through a reduction in contact area. can be secured

Meanwhile, the heater unit 210 may further include a sealing means 217 for sealing the heating element 211b. Accordingly, the sealing means 217 can prevent a short circuit caused by the current applied to the heating element 211b and invasion of water. Here, an O-ring may be used as the sealing means 217.

Referring to FIG. 3 , the sealing means 217 may be disposed on the frame 211a of the heating panel 211 along the outer surface of the heating element 211b so as to surround the heating element 211b of the heating panel 211. .

At this time, the sealing means 217 may be formed of a material having elasticity such as rubber.

Referring to FIG. 4 , the sealing means 217 may be disposed inside based on the end of the case 215 disposed to cover. In addition, one side of the sealing means 217 may be pressed by the case 213 to be in close contact with the frame 211a.

The first pad 220 is disposed between the heater unit 210 and the heat exchange unit 100 to effectively transfer heat generated from the heater unit 210 to the heat exchange unit 100 . Accordingly, contact thermal resistance between the heater unit 210 and the heat exchange unit 100 may be reduced by the first pad 220 . Here, the first pad 220 may be a thermally conductive pad that minimizes heat loss through heat transfer with a thermal grease pad.

In addition, the first pad 220 blocks the heating panel 211 of the heater unit 210 from directly contacting one side of the heat exchange unit 100 by the pressing force, so that the heating panel 211 by the pressing force damage can be prevented.

Referring to FIGS. 3 and 4 , the first pad 220 may be disposed between the heating element 211b of the heating panel 211 and the heat exchanger 100 . At this time, one surface of the first pad 220 may contact the heating panel 211 and the other surface may contact the heat exchange unit 100 .

Meanwhile, the first pad 220 may be formed in a shape capable of securing selective heat transfer capability and supporting force while reducing its own weight.

7 is a perspective view illustrating a first pad of a heat exchanger according to an embodiment.

Referring to FIG. 7 , the first pad 220 may include a plate-shaped first pad body 221 and a protrusion 222 protruding toward the inner surface of the case 213 . Here, the protrusion 222 of the first pad 220 may be referred to as a first protrusion. Also, the first pad body 221 and the protrusion 222 may be integrally formed.

The first pad body 221 may be formed in a plate shape, and one surface may be in surface contact with the heating panel 211 .

The protrusion 222 of the first pad 220 may protrude from the other surface of the first pad body 221 toward the inner surface of the case 213 . At this time, a plurality of the protrusions 222 may be spaced apart in the vertical direction and disposed on the other surface of the first pad body 221 . Also, an end of the protrusion 222 may contact a side surface of the heat exchanger 100 . In detail, an end of the protruding portion 222 may be in surface contact with a side surface of the middle plate 120 through which cooling water flows among the plurality of middle plates 120 .

Accordingly, the first pad 220 may form an air gap between the protrusions 222 in the vertical direction by arranging the plurality of protrusions 222 spaced apart from each other in the vertical direction. As shown in FIG. 7 , the protrusions 222 may be spaced apart at predetermined intervals in the vertical direction. Accordingly, the side surface of the middle plate 120 through which the refrigerant flows among the plurality of middle plates 120 is spaced apart from the first pad body 221 by the air gap. Therefore, the first pad 220 can selectively transfer the heat only to the side of the middle plate 120 through which the cooling water flows, using the plurality of protrusions 222 .

The fixing means 300 may fix the heating unit 200 to the heat exchange unit 100 so that the heating unit 200 can be provided as a module in which the heating unit 200 is added to the heat exchange unit 100 .

And, when the fixing means 300 fixes the heat exchanging part 100 and the heating part 200, as shown in FIGS. 2 and 3, since they are coupled in a fitting manner, the fixing means 300 is heated. The unit 200 may be brought into close contact with the heat exchange unit 100 . Here, the fixing means 300 may be a clip-style coupler.

Referring to FIG. 3, the fixing means 300 is a bar-shaped body 310, a pressing part 320 bent downward to face each other at both ends of the main body 310, and the pressing part 320 facing each other. It may include a protrusion 330 protruding to see. Here, the body 310, the pressing portion 320, and the protrusion 330 may be integrally formed. Also, the fixing means 300 may be formed in a U-shape made of metal to have elasticity.

At this time, the pressing unit 320 may contact one side of the heating unit 200 to apply a predetermined load to bring the heating unit 200 into close contact with the heat exchange unit 100 .

In addition, the protrusion 330 is coupled to the groove 213b formed in the case 213 to prevent the fixing means 300 from being separated.

Therefore, the heat exchanger 1 is formed by combining the protrusion 330 of the fixing means 300 with the groove 213b formed in the case 213 and the protrusion 212 formed in the heating panel 311 and the pedestal 140. The separation of the heating unit 200 can be prevented while the attachment and detachment of the heating unit 200 is easy through the coupling of the groove 141 .

Although the above has been described with reference to the embodiments of the present invention, those skilled in the art can variously modify and modify the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. You will understand that it can be changed. And, it should be construed that the differences related to these modifications and changes are included in the scope of the present invention, which is defined in the appended claims.

1: heat exchanger
100: heat exchange unit 110: upper plate
120: middle plate 130: lower plate
140: pedestal 141: groove
200: heating unit 210: heater unit
211: heating panel 212: protrusion
213 case 213b groove
215: second pad 217: sealing means
220: first pad
300: fixing means 330: protrusion

Claims (12)

a heat exchange unit for exchanging heat between the first heat exchange medium and the second heat exchange medium;
a heating unit arranged to heat one side of the heat exchanging unit; and
And a fixing means for bringing the heating part into close contact with the heat exchange part,
When the fixing means is detached, the heating part is released from the heat exchange part,
The heating unit includes a heater unit generating surface heat and a first pad disposed between the heater unit and the heat exchange unit,
the heater part
A plate-shaped heating panel that generates surface heat,
A case disposed to cover the heating element of the heating panel, and
A second pad disposed between the case and the heating panel;
The second pad blocks current leaking from the heating panel. According to claim 1,
A heat exchanger in which contact thermal resistance between the heater unit and the heat exchange unit is reduced by the first pad. According to claim 2,
One side of the fixing means pressurizes one area of the case heat exchanger. delete According to claim 1,
The heat exchanger of claim 1 , wherein the heater part further includes a sealing means disposed on a frame of the heating panel along an outer surface of the heating element to surround the heating element of the heating panel. According to claim 1,
The fixing means is
main body;
Pressing parts bent downward to face each other at both ends of the main body; and
Including a protrusion protruding from the pressing portion,
The pressing part is contacted to apply a predetermined load to one side of the heating part,
The protrusion is coupled to a groove formed in the case heat exchanger. According to claim 1,
The case is a heat exchanger formed of a synthetic resin material. According to claim 1,
The heat exchange part
top plate;
a plurality of middle plates stacked and disposed under the upper plate; and
Including a lower plate disposed under the stacked middle plate,
The upper plate includes a first inlet through which the first heat exchange medium is introduced, a first outlet through which the first heat exchange medium is discharged, a second inlet through which the second heat exchange medium is introduced, and the second heat exchange medium. A heat exchanger including a second outlet that is discharged. According to claim 8,
The heat exchanging unit further includes a pedestal disposed under the lower plate,
A heat exchanger in which a protrusion protruding downward from the heating panel is coupled to a groove formed in the pedestal. a heat exchange unit for exchanging heat between the first heat exchange medium and the second heat exchange medium;
a heating unit arranged to heat one side of the heat exchanging unit; and
And a fixing means for bringing the heating part into close contact with the heat exchange part,
When the fixing means is detached, the heating part is released from the heat exchange part,
The heating unit includes a heater unit generating surface heat and a first pad disposed between the heater unit and the heat exchange unit,
The first pad
a plate-shaped first pad body; and
A plurality of protrusions protruding from the first pad body toward the heat exchange unit,
The protrusions are arranged spaced apart in the vertical direction,
The heat exchanger of claim 1 , wherein an end of the protrusion contacts a middle plate through which coolant flows among a plurality of middle plates of the heat exchanger. According to claim 1,
The second pad
a plate-shaped second pad body; and
A plurality of protrusions protruding from the second pad body toward the case;
The protrusions are arranged spaced apart in the vertical direction,
An end of the protrusion is in contact with the case of the heat exchanger. According to claim 1,
The first heat exchange medium is provided as cooling water for temperature control of a battery provided in an electric vehicle,
The second heat exchange medium is provided as a refrigerant that exchanges heat with the cooling water,
The temperature of the refrigerant is lower than the temperature of the cooling water heat exchanger.

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