WO2015163526A1

WO2015163526A1 - Electric heating device

Info

Publication number: WO2015163526A1
Application number: PCT/KR2014/004833
Authority: WO
Inventors: 민도식; 김종업; 박진수
Original assignee: 자화전자(주)
Priority date: 2014-04-23
Filing date: 2014-05-30
Publication date: 2015-10-29
Also published as: EP3136820A4; EP3136820A1; CN206149526U; KR101510744B1

Abstract

Various embodiments relating to an electric heating device equipped in a vehicle are described. An electric heating device according to one embodiment can comprise: a heat dissipation fin; a PTC guide unit positioned on one side of the heat dissipation fin; a terminal frame having an electrode terminal unit on one end part thereof and covering an outer side of the heat dissipation fin; and a PTC device supported by the PTC guide unit, wherein one end part of the PTC guide unit may have a terminal connection part coupled to the electrode terminal part. Other various embodiments are also possible.

Description

Electrothermal heater

The present invention relates to an electrothermal heater device for use in automobiles.

In general, a positive temperature thermistor (PTC) element has a characteristic of rapidly increasing electrical resistance above a Curie temperature. Therefore, when a voltage is applied, it is parallel to the ambient temperature. Thus, there is a magnetic temperature control function in which the static thermistor becomes a constant temperature.

By utilizing the above functions, in recent years, the field of application as a high-efficiency heating element has been widened. At least one static thermistor and an electrothermal heater device in which heat dissipation fins, which are metal plates, are bonded to dissipate heat generated from the static thermistor are air conditioners. It is used as a heat source for molten metal.

The above-described heat transfer heater apparatus used in a vehicle may be mainly applied to a case where it is difficult to use engine heat, such as an initial preheating / heating system of an automobile or a hybrid or fuel cell vehicle, as an internal air conditioning heat source.

A typical electrothermal heater device includes a plurality of heat radiation fins, a plurality of PTC elements, a pair of frames for applying power to the PTC elements, and the like.

The power supply terminal may be a component that supplies external power to the PTC device, or when the electrical contact of the power supply terminal described above is poor, it may be a problem that the electric heater does not function again due to a fire or power failure due to a spark or the like. .

On the other hand, when a separate means is provided to solve the above-described problem, the structure becomes complicated, which may cause a problem that productivity is lowered. In addition, in a vehicle electric heater that requires a light weight, problems such as weight or volume may increase.

In other words, if the power terminal is damaged, it may be a big problem not only for the electric heater but also for the stability and reliability of the vehicle employing the electric heater, and the related arts for solving the problem may be complicated structures, volumes, and weights. there is a problem.

The present invention integrally constitutes a terminal coupling portion coupled to the electrode terminal portions provided in the first and second terminal frames at the ends of the PTC guide portion, thereby preventing and protecting the electrode terminal portions of the first and second terminal frames. Supporting in the down / left and right direction and fixing at the same time, thereby providing an electrothermal heater device that not only improves the electrical conductivity and thermal conductivity of the electrode terminal portion, but also reduces the defective rate of the product to improve reliability. have.

In addition, the present invention by coupling the one end portion and the electrode terminal portion provided in the first and second terminal frames to the terminal coupling portion of the PTC guide portion, to prevent the bending and damage of the first and second terminal frame as well as to further protect the heat radiation fins. It is to provide an electrothermal heater device that can be improved.

In addition, the present invention is to provide an electrothermal heater apparatus that can increase the adhesive strength of the PTC element and the first and second heat diffusion plates by forming a plurality of penetration holes through which the adhesive penetrates the first and second heat diffusion plates.

According to various embodiments of the present invention, a heat dissipation fin;

A PTC guide part located on one surface of the heat dissipation fins;

A terminal frame having an electrode terminal portion at one end and covering an outer side of the heat dissipation fin; And

A PTC element supported by the PTC guide unit,

One end of the PTC guide portion may be provided with a terminal coupling portion coupled to the electrode terminal portion.

According to various embodiments of the present invention, in an electrothermal heater apparatus,

First and second heat dissipation fins disposed symmetrically with each other;

A PTC guide part disposed between the first and second heat sink fins and having a terminal coupling part at one end thereof;

A PTC element supported by the PTC guide part so as to be disposed between the first and second heat sink fins; And

A first terminal frame having an electrode terminal portion at one end and covering the outside of the first and second heat dissipation fins,

The electrode terminal parts may be combined with the terminal coupling part.

According to various embodiments of the present invention,

One end of the first and second terminal frames and a terminal coupling part coupled to the electrode terminal part are integrally formed in the PTC guide part to prevent and protect the electrode terminal part of the first and second terminal frames, as well as to protect the upper and lower parts. While supporting in the left and right directions and being fixed at the same time, it not only improves the electrical conductivity and thermal conductivity of the electrode terminal portion, but also reduces the defective rate of the product, thereby improving the reliability of the product.

In addition, it is possible to prevent the bending and damage of the first and second terminal frame as well as to further improve the heat radiation fin protection function.

In addition, it is advantageous to increase the adhesive strength between the PTC element and the first and second thermal diffusion plates by forming a plurality of penetration holes penetrating the adhesive into the first and second thermal diffusion plates.

1 is an exploded perspective view showing the configuration of a heat transfer heater device according to an embodiment of the present invention.

Figure 2 is a perspective view showing the first and second terminal frames of the configuration of the electrothermal heater device according to an embodiment of the present invention.

Figure 3 is an enlarged perspective view showing one end portion and the electrode terminal portion provided in the first and second terminal frames of the configuration of the electrothermal heater device according to an embodiment of the present invention.

Figure 4 is a side view showing one end portion and the electrode terminal portion provided in the first and second terminal frames of the configuration of the electrothermal heater device according to an embodiment of the present invention.

Figure 5 is a perspective view showing a PTC guide portion of the configuration of the heat transfer heater apparatus according to an embodiment of the present invention.

Figure 6 is an enlarged perspective view showing the terminal coupling portion provided in the PTC guide portion of the configuration of the electrothermal heater device according to an embodiment of the present invention.

Figure 7 is a perspective view showing a coupling state of the heat transfer apparatus according to an embodiment of the present invention.

8 is a perspective view illustrating a state in which one end of the first and second terminal frames and the electrode terminal portion are coupled to the terminal coupling portion of the electrothermal heater apparatus according to the preferred embodiment of the present invention.

9 is a side view showing a state in which one end and the electrode terminal portion of the first and second terminal frames are coupled to the terminal coupling portion of the electric heater apparatus according to an embodiment of the present invention.

10 is a front view showing a state in which one end of the first and second terminal frames and the electrode terminal portion are coupled to the terminal coupling portion of the electrothermal heater device according to an embodiment of the present invention.

Figure 11 is a side cross-sectional view showing an operating state of the electrothermal heater device according to an embodiment of the present invention.

12 is a perspective view showing the first and second thermal diffusion plates of the configuration of the electrothermal heater device according to an embodiment of the present invention.

Figure 13a is a side cross-sectional view showing a state in which the first and the second adhesive penetrates the plurality of penetration holes of the first and second heat diffusion plates of the configuration of the electrothermal heater apparatus according to an embodiment of the present invention.

Fig. 13B is an enlarged side sectional view of portion A of Fig. 13A;

14 is a perspective view illustrating a state in which the electrode terminal portion of the first terminal frame is horizontally coupled to the first terminal coupling portion of the electrothermal heater apparatus according to the exemplary embodiment of the present invention.

Terms used in various embodiments of the present invention will be briefly described, and various embodiments of the present invention will be described in detail.

The terminology used in the various embodiments of the present invention selected general terms widely used as possible in consideration of the functions in the various embodiments of the present invention, but this is the intention or precedent of the person skilled in the art, the emergence of new technology And so on. In addition, in certain cases, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of various embodiments of the present invention. Therefore, terms used in various embodiments of the present disclosure should be defined based on the meanings of the terms and the contents throughout the various embodiments of the present disclosure, rather than merely names of the terms.

In addition, terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

Here, the heat transfer apparatus 10 (shown in FIG. 1) according to various embodiments of the present disclosure will be described. First, application examples of the electric heater apparatus 10 (shown in FIG. 1) according to an embodiment of the present invention, including all devices that apply the cooling, heating system, car, refrigerator, air conditioner, hot air heater, audio, It may include a washing machine, an air cleaner and a heating heater. In addition, it is apparent to those skilled in the art that the electrothermal heater apparatus according to various embodiments of the present invention is not limited to the above-described devices.

Hereinafter, a heat transfer apparatus according to various embodiments of the present disclosure will be described in detail.

First, Figure 1 is an exploded perspective view showing the configuration of the electrothermal heater device 10 according to the present invention.

Referring to FIG. 1, the electrothermal heater apparatus 10 includes a plurality of PTC elements 20, first and second

heat dissipation fins

30 and 40, PTC guide units 50, and first and second terminal frames. 60 and 70, and the first and second

thermal diffusion plates

80 and 90 are included. The PTC element 20 is composed of a positive characteristic thermistor element, and when a voltage is applied, the PTC element 20 is in parallel with the ambient temperature, so that the PTC characteristic unit has a magnetic temperature control function such that the positive characteristic thermistor becomes a constant temperature. It may be provided.

The first and second

heat dissipation fins

30 and 40 may be arranged symmetrically with respect to the PTC elements 20 so as to generate heat by receiving heat from the PTC elements 20.

The PTC guide unit 50 may be provided between the first and second

heat dissipation fins

30 and 40 to support and support the PTC elements 20.

The first and second terminal frames 60 and 70 cover the outside of the first and second

heat dissipation fins

30 and 40 to protect the first and second

heat dissipation fins

30 and 40.

In addition, one end portion 61 of the first and second terminal frames 60 and 70 is electrically connected to an external power source to supply power to the PTC elements 20, and a terminal coupling part 51 to be described later. The electrode terminal part 62 may be provided to be coupled to and fixed.

The first and second

heat spreader plates

80 and 90 may protect the first and second

heat dissipation fins

30 and 40 and support the first and second

heat dissipation fins

30 and 40 and the PTC element. 20) may be provided between.

As such, the terminal coupling part 51 is coupled to one end of the first and second terminal frames 60 and 70 and the electrode terminal part 62 at one end of the PTC guide part 50. By being integrally provided, the electrode terminal portions 62 of the first and second terminal frames 60 and 70 are supported in the up, down, left and right directions and fixed at the same time, thereby preventing damage to the electrode terminal portions 62. In addition to preventing and protecting, in addition to further improving the electrical conductivity and thermal conductivity of the electrode terminal portion 62, the defective rate of the product can be lowered, thereby improving the reliability of the product. In addition, the first and second terminal frames 60 and 70 not only prevent bending and damage, but also the first and second terminal frames 60 and 70 may include first and second

heat dissipation fins

30 and 40. Since it surrounds the first, second

heat radiation fins

30, 40 can further improve the protection function. That is, the electrode terminal portion 62 is inserted into and fixed to the terminal coupling portion 51 integrally formed in the PTC guide portion 50, so that the electrode terminal portion 62 can be easily assembled in a simple structure and the deformation is minimized, thereby maintaining a stable electrical contact state. I can keep it.

In addition, the first and second terminal frames 60 and 70 will be described in more detail as follows.

First, FIG. 2 is a perspective view showing first and second terminal frames 60 and 70 among the configurations of the electrothermal heater apparatus 10 according to the present invention, and FIG. 3 is the first of the configurations of the electrothermal heater apparatus according to the present invention. 4 is an enlarged perspective view illustrating one end portion 61 and an electrode terminal portion 62 provided in the two

terminal frames

60 and 70, and FIG. 4 is a view of the first and second terminal frames of the electric heater apparatus according to the present invention. It is an enlarged side view which shows the one end part 61 and the electrode terminal part 62 with which 60 and 70 were provided.

2 to 4, one end portion 61 of the first and second terminal frames 60 and 70 is coupled to the first coupling groove 500 of the first and second terminal coupling portions 51. At least one fixing protrusion (61a) (71a) is formed to protrude and to be supported and fixed.

That is, since the fixing

protrusions

61a and 71a are formed to protrude on both sides of the one end portion 61 of the first and second terminal frames 60 and 70, the fixing

protrusions

61a and 71a are the same. The first coupling groove 500 formed in the first and second terminal coupling parts 51 is coupled to and fixed at the same time.

In other words, since the width of the first coupling groove 500 is smaller than the width of the fixing

protrusions

61a and 71a that protrude, the fixing

protrusions

61a and 71a may be formed in the first coupling groove 500. ) To force the fit. In this case, the fixing

protrusions

61a and 71a are directly fixed to and supported by the first coupling groove 500.

In addition, the terminal coupling unit 51 will be described in more detail as follows.

First, Figure 5 is a perspective view showing a PTC guide portion 50 of the configuration of the electric heater device 10 (shown in Figure 2) according to the present invention, Figure 6 is a PTC guide of the configuration of the electrothermal heater device according to the invention An enlarged perspective view showing the terminal coupling part 51 provided in the part 50.

5 and 6, the terminal coupling part 51 includes first and second terminal coupling parts 51, and the first terminal coupling part 51a of the first terminal frame 60. It is integrally provided at the end of the PTC guide portion 50 to be coupled to one end portion 61 and the electrode terminal portion 62.

The second terminal coupling part 51b is provided at a position adjacent to the first terminal coupling part 51a to be coupled to one end 61 of the second terminal frame 70 and the electrode terminal part 62. have.

That is, as shown in 10, the first and second

terminal coupling parts

51a and 51b are provided symmetrically with respect to the PTC guide part 50.

In addition, the first terminal coupling part 51a includes first and

second coupling grooves

500 and 510, and the first coupling groove 500 is one end 61 of the first terminal frame 60. It is intended to be combined with).

The second coupling groove 510 is formed at a position adjacent to the first coupling groove 500 to be coupled to the electrode terminal portion 62 of the first terminal frame 60.

The first and

second coupling grooves

500 and 510 may be formed as coupling grooves having an 'L' shape.

In addition, the second terminal coupling part 51 includes first and

second coupling grooves

500 and 510, and the first coupling groove 500 is coupled to one end 61 of the second terminal frame. It is supposed to be.

The second coupling groove 510 is formed at a position adjacent to the first coupling groove 500 to be coupled to the electrode terminal portion 62 of the second terminal frame.

Similarly, the first and

second coupling grooves

500 and 510 are formed of coupling grooves having an 'L' shape.

That is, one ends 61, 71 and

electrode terminal parts

62, 72 of the first and second terminal frames 60, 70 may be formed of the first, second terminal coupling parts 51 of the first, second, and second terminal frames 60, 70. 2 is coupled to the

coupling grooves

500 and 510 vertically from the top to the bottom.

14 is a perspective view showing another embodiment of one end 61 of the first and second terminal frames 60 and 70, and the electrode terminal 62 and the first terminal coupling part 501.

As shown in FIG. 14, one end portion 601 and the electrode terminal portion 602 of the first and second terminal frames 60 and 70 may be formed in the first and second coupling grooves 501a of the first terminal coupling portion 501. 501b) to fit laterally horizontally to the side.

The first and second terminals 601 and the electrode terminal 602 of the first and second terminal frames 60 and 70 are horizontally coupled to the side of the first and second terminals of the first coupling portion 501 The

coupling grooves

501a and 501b will be described in more detail below.

As described above with reference to FIG. 14, the first terminal coupling part 501 includes first and

second coupling grooves

501a and 501b, and the first coupling groove 501a is one end of the first terminal frame. It is intended to be coupled with the portion 601. The second coupling groove 501b is horizontally formed on the side surface of the first coupling groove 501a to be coupled to the electrode terminal portion 602 of the first terminal frame to the side of the horizontal side.

In addition, a second terminal coupling part 502 is formed in a lower layer under the first terminal coupling part 501.

In addition, the second terminal coupling part 502 includes first and second coupling grooves (not shown), and the first coupling groove (not shown) is one end of the second terminal frame (not shown). It is intended to be combined with). The second coupling groove (not shown) is formed horizontally on the side of the first coupling groove (not shown) so as to be horizontally coupled to the electrode terminal portion (not shown) of the second terminal frame.

In addition, as described above with reference to FIGS. 1 and 13a and b, between the first terminal frame 60, the first heat sink fin 30, the first heat spreader plate 80, and the PTC device 20. First adhesive 100 may be provided to attach the components disclosed above.

A second adhesive 110 may be provided between the second terminal frame 70, the second heat dissipation fin 40, the second heat spreader 90, and the PTC device 20 to attach the disclosed components. Can be.

In addition, as shown in FIGS. 12 and 13A and b, a plurality of penetration holes 81 and 91 penetrate the first and second

thermal diffusion plates

80 and 90 so that the first and

second adhesives

100 and 110 penetrate. ) May be formed.

That is, when the first and second

thermal diffusion plates

80 and 90 and the PTC device 20 are attached to each other, the first and

second adhesives

100 and 110 may be formed by the first and second thermal diffusion plates 80. It penetrates and attaches into the penetration holes 81 and 91 of 90.

The first and

second adhesives

100 and 110 penetrate through the plurality of penetration holes 81 and 91 and attach the first and second

thermal diffusion plates

80 and 90 to the PTC element 20. In addition, the adhesive strength between the PTC device 20 and the first and second

thermal diffusion plates

80 and 90 may be further increased.

Here, referring to FIG. 2 and FIG. 7, the assembling process of the electrothermal heater device will be described in more detail. As shown in FIG. 2, the electrothermal heater device 10 includes a plurality of PTC elements 20, and First and second terminal frames 60 having the first and second

heat dissipation fins

30 and 40, the PTC guide portion 50 including the terminal coupling portion 51, and the

electrode terminal portions

62 and 72; 70) and the first and second

thermal diffusion plates

80 and 90.

The PTC elements 20 are coupled to a plurality of holes formed in the PTC guide part 50, respectively, and a first heat diffusion plate 80 is provided on the PTC elements 20. In this case, a first adhesive 100 is attached between the PTC devices 20 and the first heat diffusion plate 80 to attach the PTC devices 20 and the first heat diffusion plate 80.

That is, as shown in FIGS. 13A and 13B, the first adhesive 100 penetrates through a plurality of penetration holes 81 formed in the first thermal diffusion plate 80 and is attached to the PTC devices 20.

In this state, a first heat dissipation fin 30 is provided on the first heat diffusion plate 80. A first adhesive 100 is provided between the first heat diffusion plate 80 and the first heat dissipation fin 30, and the first heat diffusion plate 80 and the first heat dissipation plate are formed by the first adhesive 100. Attach the heat radiation fins 30.

In addition, the first terminal frame 60 is covered with an upper portion of the first heat dissipation fin 30. In this case, a first adhesive 100 is provided between the first heat dissipation fin 30 and the first terminal frame 60, and the first heat dissipation fin 30 and the first agent are formed by the first adhesive 100. 1 Attach the terminal frame (60).

At this time. One end portion 61 and the electrode terminal portion 62 formed on the first terminal frame 60 are coupled from the top to the bottom and perpendicular to the first terminal coupling portion 51a formed at the end of the PTC guide portion 50. It is fixed by fitting.

That is, one end 61 of the first terminal frame 60 is vertically coupled from the top to the bottom of the first coupling groove 500 of the first terminal coupling part 51a, and the electrode of the first terminal frame 60 is connected. The terminal portion 62 is vertically coupled from the top to the bottom of the second coupling groove 510 of the first terminal coupling portion 51a.

At this time, the fixing protrusion 61a provided at one end 61 of the first terminal frame 60 is coupled to the first coupling groove 500 and at the same time the first terminal frame 60 is fixed by the fixing protrusion. The first terminal coupler 51a is fixedly supported.

In addition, as shown in FIG. 1, a second adhesive for attaching the PTC devices 20 and the second thermal diffusion plate 90 to the lower portions of the PTC guide parts 50 combining the PTC devices 20. 110.

That is, as shown in FIGS. 13A and 13B, the second adhesive 110 penetrates into the plurality of penetration holes 91 formed in the second thermal diffusion plate 90 and is attached to the PTC devices 20.

In this state, a second heat dissipation fin 40 is provided below the second heat diffusion plate 90. A second adhesive 110 is provided between the second heat diffusion plate 90 and the second heat dissipation fin 40, and the second heat diffusion plate 90 and the second heat diffusion plate are formed by the second adhesive 110. Attach the heat radiation fins 40.

In addition, the second terminal frame 70 is provided to cover the lower portion of the second heat dissipation fin 40. In this case, a first adhesive 100 is provided between the second heat dissipation fin 40 and the second terminal frame, and the second heat dissipation fin 40 and the second terminal frame are formed by the second adhesive 110. Attach (70).

At this time. One end portion 61 and the electrode terminal portion 62 formed on the second terminal frame are simultaneously fixed to the second terminal coupling portion 51b formed at the end of the PTC guide portion 50 from the top to the bottom.

That is, one end 71 of the second terminal frame 70 is vertically coupled to the first coupling groove 500 of the second terminal coupling portion 51b, and the electrode of the second terminal frame 70 is vertically coupled. The terminal portion 72 is vertically coupled from the top to the bottom of the second coupling groove 510 of the second terminal coupling portion 51b.

At this time, the fixing protrusion 71a provided at one end 71 of the second terminal frame 70 is coupled to the first coupling groove 500 and at the same time, the second terminal frame is fixed by the fixing protrusion 71a. 70 is fixedly supported by the second terminal coupling portion 51b.

As such, as shown in FIGS. 7 and 11, power is supplied to the PTC elements 20 through the electrode terminal part 62 via an external power source to the assembled electric heater device 10 (shown in FIG. 1). Supply. The PTC devices 20 rise to a constant temperature and heat generated by the PTC devices 20 is transferred to the first and second

heat sink fins

30 and 40. The first and second

heat dissipation fins

30 and 40 directly heat air in the vicinity of a heater core installed in a case of an air conditioning apparatus, which is an air conditioning and heating system of an automobile. At the same time, the heated air may increase the temperature of the vehicle interior from the initial driving of the automobile engine to the normal driving.

As such, the conventional electric heater device (not shown) does not have a separate device for supporting or fixing a power terminal (not shown) provided in a pair of frames (not shown), so that the power terminal is easily damaged or bent. This has the disadvantage of increasing the defective rate and lowering the reliability.

Therefore, in order to overcome this disadvantage, in the present embodiment, one

end

61 and 71 and the electrode terminal 62 provided in the first and second terminal frames 60 and 70 at the ends of the PTC guide unit 50. By combining the first and second terminal coupling portions 51 coupled to the 72), damage to one end 61 and the electrode terminal portion 62 of the first and second terminal frames 60 and 70 is prevented. As well as preventing and supporting fixing, as well as further improving the electrical conductivity and thermal conductivity of the electrode terminal portion 62, the defect rate of the product may be lowered, thereby improving the reliability of the product.

The electrothermal heater apparatus of the present invention described above is not limited to the above-described embodiments and drawings, and various substitutions, modifications, and changes are possible within the technical scope of the present invention. It will be apparent to those who have

Claims

Heat dissipation fins;

A PTC guide part located on one surface of the heat dissipation fins;

A terminal frame having an electrode terminal portion at one end and covering an outer side of the heat dissipation fin; And

A PTC element supported by the PTC guide unit,

One end of the PTC guide portion having a terminal coupling portion coupled to the electrode terminal portion.
The heat transfer device of claim 1, wherein the heat transfer device further comprises a heat diffusion plate positioned between the PTC guide part and the heat dissipation fins.
In the heat transfer heater apparatus,

First and second heat dissipation fins disposed symmetrically with each other;

A PTC guide part disposed between the first and second heat sink fins and having a terminal coupling part at one end thereof;

A PTC element supported by the PTC guide part so as to be disposed between the first and second heat sink fins; And

A first terminal frame having an electrode terminal portion at one end and covering the outside of the first and second heat dissipation fins,

And the electrode terminal parts are coupled to the terminal coupling part.
The electrothermal heater device of claim 3, wherein the electrothermal heater device further comprises first and second heat diffusion plates positioned between the PTC guide part and the first and second heat dissipation fins.
The electrothermal heater apparatus of claim 3, wherein at least one fixing protrusion protrudes from one end of the first and second terminal frames so as to be coupled to the first coupling groove formed in the terminal coupling portion and to be supported and fixed.
4. The terminal of claim 3, wherein the terminal coupling part comprises: a first terminal coupling part coupled to one end of the first terminal frame and the electrode terminal part; And

And a second terminal coupling part provided at a position adjacent to the first terminal coupling part and coupled to one end of the second terminal frame and the electrode terminal part.
7. The apparatus of claim 6, wherein the first and second terminal coupling parts comprise: a first coupling groove coupled to one end of the first and second terminal frames; And

And a second coupling groove coupled to the electrode terminal portions of the first and second terminal frames at a position adjacent to the first coupling groove.
8. The electrothermal heater apparatus according to claim 7, wherein the first and second coupling grooves are formed of 'L' shaped coupling grooves.
The electrothermal heater apparatus according to claim 6, wherein the first and second terminal coupling portions are provided symmetrically with respect to the PTC guide portion.
The electric heater apparatus of claim 7, wherein one end of the first and second terminal frames and the electrode terminal parts are vertically or horizontally coupled to the first and second coupling grooves of the first and second terminal coupling parts.
The method of claim 4, wherein a first adhesive is provided between the first terminal frame, the first heat dissipation fin, the first heat spreader, and the PTC elements.

And a second adhesive provided between the second terminal frame, the second heat dissipation fin, the second heat diffusion plate, and the PTC elements.
The electrothermal heater apparatus according to claim 11, wherein the first and second thermal diffusion plates are further formed with a plurality of penetration holes through which the first and second adhesives penetrate.