KR20200082561A - Heater for electric vehicle with dual heating structure - Google Patents

Abstract

The present invention relates to a heater in a dual heating structure and, more specifically, to a heater for an electric vehicle in a dual heat transfer type heating structure, which can efficiently transfer heat to the outside in a radiative and convective manner. To this end, the heater for an electric vehicle in the dual heat transfer type heating structure includes: a main body; a plurality of air blowing paths connected to an upper side of the main body to discharge air introduced from an air blowing fan to a heat exchange area in the main body; a planar heating body installed on a lower side of the main body to heat the air discharged to the heat exchange area through a surface; and a surface material bonded onto a lower side of the planar heating body to form an outer frame of the main body.

Description

Heater for electric vehicle with dual heating structure

The present invention relates to a heater of a double heating structure, and more particularly, to a heater for an electric vehicle of a double heat transfer type heating structure capable of efficiently transferring heat to the outside in a manner of radiation and convection.

PTC (Positive Temperature Coefficient Heater) heater refers to a system that operates heating through electric heating before the temperature of the automobile coolant reaches a certain temperature. Electric vehicles, which have been expanding recently, do not have an engine room, so PTC heaters are used as main heating rather than auxiliary heating. If the PTC heater is operated in an electric vehicle while the outdoor temperature is below zero, up to 40% of the battery is heated. Energy efficiency was not good because it was used.

In the case of an IR heater, heat energy is transferred from a general surface heating element heat source to a user in a manner of radiation and convection. The conventional IR heater is optimized for radiation, but has a disadvantage in that it has an adverse structure for convection. That is, in the case of the IR heater, there is a problem in that the heat efficiency of the heater is deteriorated because heat transfer is performed by natural convection.

When the PTC heater and the IR heater are applied to an electric vehicle as described above, there is a problem that energy efficiency and thermal efficiency are poor.

Korean Patent Publication No. 10-2014-0105640 relates to a planar heating element for automobiles that includes a layered structure of a carbon nanotube heating layer including a far infrared ray emitting layer, a metal layer, and a metal wire, and uses IR radiation to increase thermal efficiency. Although it is trying to solve the problem, it also has a room for improvement because it does not effectively transfer heat energy to the external environment because natural convection is used as the basic heating method for heat transfer by convection, which accounts for a large portion of radiation.

Korean Patent Publication No. 10-2014-0105640

An object of the present invention is to provide a heating device that increases heating efficiency and energy efficiency, thereby reducing heating energy and improving fuel consumption and driving distance.

An object of the present invention is to provide a heating device capable of suppressing breathing difficulties and skin dryness that may occur due to the air conditioning heating method by forced convection.

An object of the present invention is to provide a heating device capable of delivering a sense of heat in a short time by targeting only passengers, not all unnecessary cabins.

The object of the present invention is not limited to the object mentioned above. The object of the present invention will be more apparent from the following description, and will be realized by means described in the claims and combinations thereof.

According to the invention, the main body; A plurality of blowing passages connected to the upper side of the main body to discharge air flowing from the blowing fan into a heat exchange area inside the main body; A planar heating element installed below the main body and heating air discharged to the heat exchange area through a surface; And a surface material joined to the lower side of the planar heating element to form the exoskeleton of the main body, wherein the planar heating element and the surface material include a plurality of ventilation holes capable of discharging air from the heat exchange area to the outside, and The planar heating element includes a first surface facing the heat exchange area to heat the air in the heat exchange area and a second surface contacting the surface material, and transmits radiant heat to the outside through the second surface of the planar heating element It provides a heater for an electric vehicle having a double heating structure.

The vent hole penetrates the bonded planar heating element and the surface material, and the vent hole is formed at the same position in the area where the planar heating element and the surface material come into contact, and the area of the vent hole of the planar heating element at the point where the planar heating element contacts the surface material The cross-sectional area of the ventilation hole of the surface material is identical, and the ventilation hole can be continuously formed without clogging to the outside through the planar heating element and the surface material.

The sum of the cross-sectional areas of the ends of the ventilation passages meeting the main body may be smaller than the sum of the cross-sectional areas of the vent holes formed outside the surface material.

The ventilation hole may include one shape selected from the group consisting of a diagonal shape, a funnel shape, and a combination thereof.

An electrode may be provided on the planar heating element, and the electrode may be provided at a position selected from the group consisting of a first surface, a second surface, and a combination of the planar heating elements.

The electrode may be formed at a portion where the vent hole does not exist in the planar heating element.

The surface material may be one selected from the group consisting of epoxy, polycarbonate, acrylic, polyethylene, polyvinyl chloride, fiber, glass and combinations thereof.

The planar heating element may be one selected from the group consisting of carbon-based, ceramic-based, and combinations thereof.

A heat exchange plate including a plurality of spiral holes having a spiral pattern may be attached to an upper side of the planar heating element.

The heat exchanger plate may be one selected from the group consisting of aluminum, aluminum alloy, titanium, titanium alloy, steel, steel alloy, and combinations thereof.

A plurality of heat exchange fins having a spiral pattern may be attached to an upper side of the planar heating element.

The heat exchange fin may be one selected from the group consisting of aluminum, aluminum alloy, titanium, titanium alloy, steel, steel alloy, and combinations thereof.

The area of the first surface vent hole of the planar heating element may be equal to or greater than the area of the second surface vent hole.

The area ratio of the vent hole to the area of the entire first surface in the planar heating element may be 20% to 80%.

According to the present invention, there is an effect of reducing heating energy and improving fuel efficiency by increasing thermal efficiency and energy efficiency.

The present invention provides a means for directly transferring heat to the peripheral nerves of a passenger.

According to the present invention, it is possible to suppress the occurrence of dyspnea and dryness of the skin that comes from the air warmed by heat transfer by infrared radiation.

According to the present invention, it is possible to see the heating effect in a short time through convection while transferring heat to a large area through radiation.

The effects of the present invention are not limited to the effects mentioned above. It should be understood that the effects of the present invention include all effects that can be deduced from the following description.

1 schematically shows a heater body configuration of the double heating structure of the present invention.
2 is a view showing the relationship between the ventilation passage and the ventilation hole of the present invention.
Figure 3 shows the shape of the vent hole formed in the planar heating element of the present invention.
4 briefly shows the configuration of the electrode formed on the planar heating element.
5 is a view showing the pattern of the spiral hole in the heat exchange plate.
6 is a view showing a cross section of a heat exchange plate and a spiral hole.
7 shows a layered structure of a planar heating element to which a heat exchanger plate including a plurality of spiral holes is applied.
8 is a view showing the structure of the heat exchange fin.

The above objects, other objects, features and advantages of the present invention will be readily understood through the following preferred embodiments related to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed contents are thorough and complete and that the spirit of the present invention is sufficiently conveyed to those skilled in the art.

In describing each drawing, similar reference numerals are used for similar components. In the accompanying drawings, the dimensions of the structures are shown to be enlarged than the actual for clarity of the present invention. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may be referred to as a first component. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this specification, the terms "include" or "have" are intended to indicate the presence of features, numbers, steps, actions, components, parts or combinations thereof described in the specification, one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, actions, components, parts or combinations thereof are not excluded in advance. In addition, when a part such as a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the case of being "just above" the other part but also another part in the middle. Conversely, when a portion of a layer, film, region, plate, or the like is said to be “under” another portion, this includes not only the case “underneath” another portion, but also another portion in the middle.

Unless otherwise specified, all numbers, values, and/or expressions expressing amounts of ingredients, reaction conditions, polymer compositions, and blends used herein are those numbers that occur in obtaining these values, among other things. As these are approximations that reflect the various uncertainties of the measurement, it should be understood that in all cases they are modified by the term "about". In addition, when numerical ranges are disclosed in this description, these ranges are continuous, and include all values from the minimum value in this range to the maximum value including the maximum value, unless otherwise indicated. Further, when such a range refers to an integer, all integers including the minimum value to the maximum value including the maximum value are included unless otherwise indicated.

In the present specification, when a range is described for a variable, it will be understood that the variable includes all values within the stated range including the described endpoints of the range. For example, a range of “5 to 10” includes values of 5, 6, 7, 8, 9, and 10, as well as any subrange of 6 to 10, 7 to 10, 6 to 9, 7 to 9, and the like. It will be understood to include, and include any value between integers pertinent to the stated range of ranges such as 5.5, 6.5, 7.5, 5.5 to 8.5 and 6.5 to 9, and the like. Also, for example, the range of “10% to 30%” is 10% to 15%, 12% to 10%, 11%, 12%, 13%, etc. and all integers including up to 30% It will be understood that it includes any subranges such as 18%, 20% to 30%, etc., and includes any value between valid integers within the scope of the stated range, such as 10.5%, 15.5%, 25.5%, and the like.

According to the invention, the main body; A plurality of blowing passages connected to the upper side of the main body to discharge air flowing from the blowing fan into a heat exchange area inside the main body; A planar heating element installed below the main body to discharge air discharged to the heat exchange area to the outside of the main body; And a surface material joined to the lower side of the planar heating element to form the exoskeleton of the main body, wherein the planar heating element and the surface material include a plurality of ventilation holes capable of discharging air from the heat exchange area to the outside, and The planar heating element includes a first surface facing the heat exchange area to heat the air in the heat exchange area and a second surface contacting the surface material, and transmits radiant heat to the outside through the second surface of the planar heating element It provides a heater for an electric vehicle having a double heating structure.

1 is a schematic view showing the configuration of the main body 1 included in the heater of the double heating structure of the present invention, and each configuration will be described with reference to this.

The main body 1 of the present invention includes a ventilation passage 10, a heat exchange area 20, a ventilation hole 30, a surface material 41, a planar heating element 42, and a heat exchange structure 60.

Each configuration of the main body included in the heater of the double heating structure of the present invention will be described.

The blower passage 10 of the present invention is a passage that serves to introduce air supplied through the rotational movement of the blower fan (not shown) into the heat exchange area 20. At this time, the ventilation passage 10 may be one or more than one.

The incoming air may be heated hot air or cold air that is not heated.

The heat exchange area 20 of the present invention is a space for heating the air introduced from the ventilation passage 10. The incoming air may be heated air or unheated air. The heat exchange area 20 has an appropriate space size to sufficiently transmit radiant heat radiated from the planar heating element 42 to the inflowing air.

The lower surface of the planar heating element 42 of the present invention is joined to a surface material 41 that serves to protect the planar heating element 42 from being in direct contact with the outside.

The planar heating element 42 and the surface material include a vent hole 30 serving as a passage for discharging the air in the heat exchange area 20 to the outside. Specifically, the vent hole 30 is formed in a form that penetrates the planar heating element 42 and the surface material 41, wherein the vent hole 30 is a portion where the planar heating element 42 and the surface material 41 abut. In the same position is formed.

That the vent hole 30 is formed in the same position at the portion where the planar heating element 42 and the surface material 41 abut is the tub of the planar heating element 42 at the point where the planar heating element 42 and the surface material 41 meet The cross-sectional area of the long hole 30 and the cross-sectional area of the ventilation hole 30 of the surface material 41 coincide, and the ventilation hole 30 continuously forms the planar heating element 42 and the surface material 41 without clogging to the outside. Means

The ventilation holes 30 are to be formed in a large number, Figure 2 shows the relationship between the ventilation passage 10 and the ventilation hole 30. Referring to this, the sum of the cross-sectional area (A) of the end of the entire air passage 10 is equal to or less than the sum of the cross-sectional area (a) of the entire ventilation holes 30 outside the surface material 41. At this time, if the sum of the cross-sectional area (A) of the ventilation passage 10 is smaller than the sum of the cross-sectional area (a) of the ventilation hole 30 outside the surface material 41, air introduced into the heat exchange area 20 is vented through the ventilation hole 30 It may not be discharged entirely through.

The vent hole 30 is basically formed in a direction perpendicular to the surface of the surface material 41 forming the outer surface of the body 1, but is not limited thereto, and the cross-sectional area of the vent hole 30 is also all positions It is not limited to being formed in the same way. In this regard, FIG. 3 shows an example of the shape of the ventilation hole 30 formed through the planar heating element 42 and the surface material 41. Referring to FIG. 3, the ventilation hole 30 may be formed to be inclined in a constant direction with diagonal lines in the same direction (A), and may be formed to be inclined with diagonal lines in different directions (B). In addition, the ventilation hole 30 is formed in a funnel shape and may be formed in a shape in which its cross-sectional area becomes narrower as it goes through the surface material 41 from the planar heating element 42 to the outside. When the funnel-shaped vent hole is configured, the area of the first surface vent hole of the planar heating element 42 may be larger than the area of the second surface vent hole, and the area of the first surface vent hole of the planar heating element 42 may be an area of the surface material. It may be larger than the cross-section of the vent hole formed on the outside.

The planar heating element 42 includes an electrode 50 that serves to transfer external electrical energy to the planar heating element 42. 4 schematically shows the configuration of the electrode 50 attached to the planar heating element 42. Referring to this, the electrode 50 is formed by being provided at one position selected from the group consisting of the first surface, the second surface, the interior of the planar heating element 42, and combinations thereof. The electrode 50 may be alternately positioned with the ventilation hole 30 at a position not overlapping with the ventilation hole 30 formed in the planar heating element 42. The electrode 50 is formed for the purpose of transmitting external electrical energy to the planar heating element 42, and the type of the electrode 50 material is one selected from the group consisting of silver (Ag), copper (Cu), and combinations thereof. Can be

The planar heating element 42 of the present invention has a structure in which both surfaces are heated by the applied power. The planar heating element 42 includes a first surface facing the heat exchange area 20 and a second surface contacting the surface material 41. The first and second surfaces emit the same heat as radiation. At this time, the radiant heat emitted to the first surface of the planar heating element 42 serves to transfer heat to the air introduced into the heat exchange area 20, and radiant heat emitted to the second surface of the planar heating element 42 is The surface material 41 is released to the outside and serves to transfer heat to the outside air.

The planar heating element 42 is characterized in that it can transfer heat to the air in a manner of conducting heat through the first surface. That is, the planar heating element 42 is characterized in that it can directly transmit the feeling of heat to the passenger in a radiating manner, and at the same time, heat the air inside the body 1 by heat conduction and convection. This will be explained again later in the heat exchange structure.

The area of the vent hole in the first surface of the planar heating element 42 may be the same as or greater than the area of the entire vent hole in the second surface. The area ratio of the vent holes formed on the first surface to the area of the entire first surface is 20% to 80%.

The planar heating element 42 is one selected from the group consisting of carbon-based, ceramic-based, and combinations thereof.

The surface material 41 of the present invention is bonded to the lower portion of the planar heating element 42 so that the planar heating element 42 is not directly exposed to the outside. At this time, the surface material 41 is not deformed by the heat generated from the planar heating element 42, it is preferable to select a material that can transfer the heat to the outside with minimal loss. For example, the surface material 41 is made of a material selected from the group consisting of epoxy, polycarbonate, acrylic, polyethylene, polyvinyl chloride, fiber, glass and combinations thereof. The inner surface of the surface material 41 is in contact with the second surface of the planar heating element 42, and the outer surface of the surface material 41 is characterized by being exposed to the outside.

The main body 1 of the present invention is characterized in that it further comprises a heat exchange structure in the heat exchange region 20.

The heat exchange structure is one selected from the group consisting of a plate-shaped heat exchange plate 60, a fin heat exchange fin 70, and a combination thereof.

The heat exchange structure is formed on the top of the planar heating element 42 to generate a vortex in the air introduced into the heat exchange area 20 to increase the residence time of the air and heat exchange heat generated from the planar heating element 42 It serves to conduct heat to the structure or to better transfer heat to the introduced air through convection. In addition, the heat exchange structure serves to partially reflect infrared (IR) emitted from the planar heating element 42 to the outside, not to the inside of the body 1.

It is preferable that the material of the heat exchange structure includes a material having high thermal conductivity and reflecting radiant heat. For example, it may be one selected from the group consisting of aluminum, aluminum alloy, titanium, titanium alloy, steel, steel alloy, and combinations thereof.

The heat exchange plate 60 includes a plurality of spiral holes 61 having a spiral pattern, and is characterized in that it is provided on the top of the planar heating element 42. 5 shows the pattern when the spiral pattern of the spiral hole 61 is observed from the top. In FIG. 5, the black portion of the spiral pattern is the surface of the heat exchanger plate, and the white portion is a hole portion that is opened to allow air to move.

The air in the heat exchange area 20 moves along the surface of the spiral hole 61 formed in the heat exchange plate 60, and then is discharged through the hole in the spiral hole 61, wherein the air of the heat exchange plate 60 It may be heated from the surface and the surface of the spiral hole 61 or through heat convected from the planar heating element 42.

With the configuration of the spiral hole 61 having such a helical pattern, when the air in the heat exchange area 20 exits through the hole of the spiral hole 61, a vortex is partially generated, which controls the flow of air to a planar heating element. Temporarily stagnant in the vicinity of (42) and the heat generated from the planar heating element (42) with the stagnant air can be better transferred through conduction and convection.

The rear surface of the heat exchange plate 60 is attached to the first surface of the planar heating element 42, and the spiral hole 61 formed in the heat exchange plate 60 is inserted into the ventilation hole 30 of the planar heating element 42 Will be. At this time, the area in which the spiral hole 61 is not formed in the heat exchange plate 60 is formed in the same plane as the area where the vent hole 30 is not formed in the planar heating element 42, and this area is the planar heating element. It may also serve to reflect infrared (IR) generated from the first surface of (42) to the outside of the body (1).

7 shows the configuration of the planar heating element 40 to which the heat exchange plate 60 of the present invention is applied. Referring to this, it can be seen that the heat exchange plate 60 is provided on a first surface that is an upper portion of the planar heating element 42, and a plurality of spiral holes 61 are formed.

The heat exchange fin 70 includes a spiral shaft 71 and a spiral blade 72 having a spiral pattern around the spiral shaft, and is characterized in that at least one is provided on the top of the planar heating element 42.

8 shows the structure of the heat exchange fin 70 of the present invention. Specifically, the spiral blade 72 is formed while twisting in a spiral along the axial direction from one end to the other end of the outer circumferential surface of the spiral shaft 71. The twist of the spiral blade 72 may be formed more than once along the spiral shaft 71, and the spiral shaft 71 can be rotated according to the purpose.

The heat exchange fin 70 is specifically attached to the first surface of the planar heating element 42, and conducts heat transmitted from the planar heating element 42 through the spiral shaft 71 and the spiral blade 72. do.

The air in the heat exchange area 20 is moved along the spiral blade 72 of the heat exchange fin 70 and then discharged to the outside through the vent hole 30 formed on the planar heating element 42. At this time, the air is characterized in that it is heated through heat transferred from the heat exchange fin 70 or transferred in a convection manner from the planar heating element.

Among the surfaces of the spiral blades 72 included in the heat exchange fin 70, the surface facing the planar heating element 42 receives infrared (IR) emitted from the first surface of the planar heating element 42, the main body 1 It may also serve to reflect the outside of the.

Depending on the purpose, the heat exchange fin 70 may be used in a complex form with the heat exchange plate 60, in which case the heat exchange fin 70 is provided on the heat exchange plate 60.

The heater of the double heat transfer method heating structure of the present invention can radiate and transmit infrared heat to the outside of the body 1 through the planar heating element 42, or through the heated air inside the body 1 through the ventilation hole 30 ) Is characterized by being able to transmit by convection to the outside. In this case, the air inside the main body 1 is heated by receiving radiant heat (infrared heat), convection heat, and conduction heat from the planar heating element 42.

Through the above structure, it is possible to efficiently transfer heat to the outside by efficiently operating energy supplied from the outside. In other words, it is possible to effectively transfer heat to passengers in the vehicle with only a small amount of energy, and consequently, it can help to improve the vehicle's fuel efficiency and mileage.

1: main body
10: Songpong Passage
20: heat exchange zone
30: ventilation hole
41: surface material
42: planar heating element
50: electrode
60: heat exchanger plate
61: Spiral Hall
70: heat exchange fin
71: Spiral axis
72: Spiral Wing
A: Cross section of the ventilation passage
a: Cross section of ventilation hole

Claims (13)

main body;
A plurality of blowing passages connected to the upper side of the main body to discharge air flowing from the blowing fan into a heat exchange area inside the main body;
A planar heating element installed below the main body and heating air discharged to the heat exchange area through a surface; And
Containing; a surface material that is bonded to the lower side of the planar heating element to form the exoskeleton of the body;
The planar heating element and the surface material include a plurality of ventilation holes capable of discharging the air in the heat exchange area to the outside,
The planar heating element includes a first surface facing the heat exchange area and heating the air in the heat exchange area and a second surface contacting the surface material,
A heater for an electric vehicle having a double heat transfer method, characterized in that it transmits radiant heat to the outside through the second surface of the planar heating element. According to claim 1,
The ventilation hole penetrates the bonded planar heating element and the surface material,
The ventilation hole is formed in the same position in the area where the planar heating element and the surface material are in contact,
At the point where the planar heating element contacts the surface material, the cross-sectional area of the vent hole of the planar heating element and the cross-sectional area of the vent hole of the surface material are identical,
The ventilation hole is a heater for an electric vehicle of a double heat transfer method heating structure, characterized in that continuously formed without clogging to the outside through the planar heating element and the surface material. According to claim 1,
A heater for an electric vehicle having a double heat transfer heating structure, characterized in that the sum of the cross-sectional areas of the ends of the ventilation passages that meet with the main body is smaller than the sum of the cross-sectional areas of the vent holes formed outside the surface material. According to claim 1,
The ventilation hole is a heater for an electric vehicle of a double heat transfer type heating structure, characterized in that it comprises one shape selected from the group consisting of a diagonal shape, a funnel shape and a combination thereof. According to claim 1,
An electrode is provided on the planar heating element,
The electrode is a heater for an electric vehicle of a double heat transfer type heating structure, characterized in that it is provided at one position selected from the group consisting of the first surface, the second surface, the interior of the planar heating element and a combination thereof. The method of claim 5,
The electrode is a heater for an electric vehicle of a double heat transfer method heating structure, characterized in that formed in the area where the vent hole does not exist in the planar heating element. According to claim 1,
The surface material is an electric vehicle heater of a double heat transfer method heating structure, characterized in that it is one selected from the group consisting of epoxy, polycarbonate, acrylic, polyethylene, polyvinyl chloride, fiber, glass and combinations thereof. According to claim 1,
The planar heating element is a heater for an electric vehicle of a double heat transfer type heating structure, characterized in that it is one selected from the group consisting of carbon-based, ceramic-based, and combinations thereof. According to claim 1,
A heater for an electric vehicle having a double heat transfer type heating structure, characterized in that a heat exchange structure is attached to an upper side of the planar heating element. The method of claim 9,
The heat exchange structure includes a heat exchange plate including a plurality of spiral holes having a spiral pattern; Or a heater for an electric vehicle having a double heat transfer type heating structure, characterized in that it is a plurality of heat exchange fins having a spiral pattern. The method of claim 9,
The heat exchange structure is aluminum, aluminum alloy, titanium, titanium alloy, steel, steel alloy, and a heater for an electric vehicle of a double heat transfer method heating structure, characterized in that one selected from the group consisting of these. According to claim 1,
The area of the first surface vent hole of the planar heating element is the same as or greater than the area of the second surface vent hole. According to claim 1,
In the planar heating element, the ratio of the area of the ventilation hole to the area of the entire first surface is 20% to 80%.

Images