PTC heating assembly and electric heating device

Abstract

The invention discloses a PTC heating assembly and an electric heating device, and according to the technical scheme of the invention, a plurality of PTC heating elements in the PTC heating assembly are arranged in parallel in the same arrangement plane, so that the use and heating effects of the PTC heating elements are not affected, and the heating efficiency of the PTC heating elements is improved. By horizontally placing each PTC heating element, the overall thickness of the PTC heating device is reduced, and the heat transfer efficiency of the PTC heating device is improved. The flow inlet and the flow outlet in the electric heating device can be formed in the first heat exchanger and the second heat exchanger correspondingly and can also be formed in the first heat exchanger in a centralized mode, so that the flow inlet and the flow outlet can form various external connection modes in the direction, and the electric heating device can adapt to various installation environments.

Description

Technical Field

[0001] The present application relates to the field of PTC heating, and more specifically, to a PTC heating component and an electric heating device including the PTC heating component. Background Art

[0002] PTC (Positive Temperature Coefficient) thermistors have been widely used in various working conditions requiring heating.

[0003] However, in the traditional PTC heating device shown in the patent with publication number DE102017221490A1, its PTC heating component needs to be placed in the PTC accommodating cavity in cooperation with the wedge-shaped block, and the setting direction of the PTC heating component is perpendicular to its water inlet and outlet. First, in this structure, since the PTC heating component is set vertically, this leads to a thicker overall thickness of the PTC heating device. Secondly, the wedge-shaped block in this structure usually cannot completely fill the accommodating cavity, and there is still a gap in the accommodating cavity, and the thermal resistance of the side of the wedge-shaped block in the accommodating cavity is relatively large, which will cause the traditional PTC heating device to be prone to local overheating and low heat transfer efficiency.

[0004] Therefore, how to propose a new PTC heating solution that can solve at least one or more technical defects to at least a certain extent has become a technical problem that needs to be solved in the field. Summary of the invention

[0005] In view of this, the present application proposes a new PTC heating solution.

[0006] In a first aspect, according to the present application, a PTC heating component is proposed, the PTC heating component comprising:

[0007] A plurality of PTC heating elements, the plurality of PTC heating elements are arranged in parallel in the same arrangement plane, each of the PTC heating elements is flat in shape and is connected to a first electrode and a second electrode; and

[0008] The conductive plate has a first connecting portion and / or a second connecting portion insulated from each other, wherein the first connecting portion is electrically connected to the first electrode of each PTC heating element, and the second connecting portion is electrically connected to the second electrode of each PTC heating element.

[0009] Preferably, the first electrode and the second electrode of each PTC heating element are both oriented toward the first side, and the conductive plate is located at the first side of the PTC heating element; or

[0010] The first electrode of each PCT heating element faces the first side, the second electrode of each PCT heating element faces the second side opposite to the first side, a conductive plate is located on the first side and electrically connected to each first electrode, and another conductive plate is located on the second side and electrically connected to each second electrode.

[0011] Preferably, the first electrode and the second electrode of some PTC heating elements are both facing the first side, and the first electrode and the second electrode of other PTC heating elements are both facing the second side opposite to the first side, a conductive plate is located on the first side of the PTC heating element, and the other conductive plate is located on the second side of the PTC heating element.

[0012] Further preferably, the PTC heating element with the first electrode and the second electrode facing the first side and the PTC heating element with the first electrode and the second electrode facing the second side are arranged alternately.

[0013] Further preferably, the plurality of PTC heating elements are all insulated and sealedly arranged in a same frame, and the frame is in the shape of a flat plate extending along the arrangement plane.

[0014] In a second aspect, according to the present application, an electric heating device is proposed, wherein:

[0015] The electric heating device comprises:

[0016] a first heat exchanger comprising a first heat exchange chamber having an inlet; and

[0017] a second heat exchanger, the second heat exchanger comprising a second heat exchange chamber having an outlet, the second heat exchange chamber being in fluid communication with the first heat exchange chamber such that the inlet is in fluid communication with the outlet; and

[0018] A PTC heating component, wherein the PTC heating component is clamped between a first heat exchange cavity of the first heat exchanger and a second heat exchange cavity of the second heat exchanger; or

[0019] The electric heating device comprises:

[0020] a first heat exchanger comprising a first heat exchange chamber having an inlet; and

[0021] a second heat exchanger, the second heat exchanger comprising a second heat exchange cavity, the second heat exchange cavity being in fluid communication with the first heat exchange cavity, the first heat exchanger being provided with an outlet, the outlet being in fluid communication with the first heat exchange cavity via the second heat exchange cavity, so that the inlet is in fluid communication with the outlet; and

[0022] A PTC heating component is clamped between the first heat exchange cavity of the first heat exchanger and the second heat exchange cavity of the second heat exchanger.

[0023] Preferably, the PTC heating component is the PTC heating component described in claim 5.

[0024] Further preferred:

[0025] The first heat exchanger comprises: a first shell, which is arranged on a first side of the PTC heating component and defines the first heat exchange cavity between the PTC heating component, the inlet is arranged on the first shell and directly communicates with the first heat exchange cavity,

[0026] The second heat exchanger comprises: a second shell and a bottom plate, the second shell is arranged on a second side of the PTC heating component opposite to the first side and defines the second heat exchange cavity between the second shell and the bottom plate, the outlet is arranged in the second shell and directly communicates with the second heat exchange cavity; or

[0027] The first heat exchanger comprises: a first shell, which is arranged on a first side of the PTC heating component and defines the first heat exchange cavity between the PTC heating component, the inlet is arranged on the first shell and directly communicates with the first heat exchange cavity,

[0028] The second heat exchanger includes: a second shell and a base plate. The second shell is arranged on the second side of the PTC heating component opposite to the first side and defines the second heat exchange cavity between the second shell and the base plate. The outlet is arranged on the first shell and communicates with the first heat exchange cavity via the second heat exchange cavity.

[0029] Further preferably, a first heat exchange structure is provided in the first heat exchange cavity of the first heat exchanger, and a second heat exchange structure is provided in the second heat exchange cavity of the second heat exchanger;

[0030] The frame is provided with a transition channel and the bottom plate is provided with a through hole, and the transition channel and the through hole are connected with the first heat exchange cavity and the second heat exchange cavity.

[0031] Further preferably, the transition flow channel extends in a direction perpendicular to the arrangement plane.

[0032] Further preferably, the transition flow channel comprises:

[0033] a first vertical section, the first vertical section extending in a direction perpendicular to the arrangement plane and directly communicating with the first heat exchange cavity;

[0034] a second vertical section extending in a direction perpendicular to the arrangement plane and directly communicating with the second heat exchange chamber; and

[0035] a transverse transition section extending on the frame along the arrangement plane and connecting the first vertical section and the second vertical section; or

[0036] The transition channel comprises:

[0037] a first vertical section, the first vertical section extending in a direction perpendicular to the arrangement plane and directly communicating with the first heat exchange cavity;

[0038] A second vertical section extends in a direction perpendicular to the arrangement plane and is directly connected to the second heat exchange chamber, and the first vertical section is coaxial with and overlaps with the second vertical section.

[0039] Further preferably, the inlet and the outlet face the same direction or face different directions, and preferably, the inlet and the outlet face parallel to each other; and / or

[0040] The inlet and the outlet are arranged at a distance from each other in the length direction and / or the width direction and / or the height direction.

[0041] Further preferably, in the case where the inlet and the outlet are provided on the first shell, an isolation chamber is provided in the first heat exchange cavity, the isolation chamber is communicated with the outlet and is isolated and sealed from the first heat exchange cavity, and a reflux hole is provided on the frame, the reflux hole connects the second heat exchange cavity and the isolation chamber.

[0042] According to the technical solution of the present application, multiple PTC heating elements in the PTC heating assembly are arranged in parallel in the same layout plane. Without affecting the use and heating effect of the PTC heating elements, the overall thickness of the PTC heating device is reduced and its heat transfer efficiency is improved by horizontally placing each PTC heating element. The inlet and outlet in the electric heating device can be respectively arranged in the first heat exchanger and the second heat exchanger, or can be centrally arranged in the first heat exchanger, so that the orientation of the inlet and outlet can form a variety of external connection methods, so that the present application can be adapted to a variety of installation environments.

[0043] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present application, and the schematic implementation modes and descriptions of the present application are used to explain the present application. In the accompanying drawings:

[0045] Figure 1 This is a schematic structural diagram of a first PTC heating component according to a preferred embodiment of the present application;

[0046] Figure 2 It is a structural schematic diagram of a second PTC heating component according to a preferred embodiment of the present application;

[0047] Figure 3 It is a structural schematic diagram of a first electric heating device according to a preferred embodiment of the present application;

[0048] Figure 4 This is a schematic diagram of the assembly of a first electric heating device according to a preferred embodiment of the present application;

[0049] Figure 5 It is a schematic diagram of the assembly of a second electric heating device according to a preferred embodiment of the present application;

[0050] Figure 6 It is a schematic diagram of the structure of various electric heating devices according to the preferred embodiment of the present application;

[0051] Figure 7 This is a schematic diagram of the isolation chamber assembly according to a preferred embodiment of the present application.

[0052] Figure Number:

[0053] 10-PTC heating element; 11-first electrode; 12-second electrode;

[0054] 20-conductive plate;

[0055] 30-frame; 31-transition channel; 311-first vertical section; 312-second vertical section; 313-lateral transition section; 32-return hole; 33-isolation chamber;

[0056] 100 - first heat exchanger; 101 - inlet; 102 - first heat exchange chamber; 110 - first shell;

[0057] 200 - second heat exchanger; 201 - outlet; 202 - second heat exchange chamber; 210 - second shell; 220 - bottom plate;

[0058] 300-PTC heating component;

[0059] 40-Fins. DETAILED DESCRIPTION

[0060] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with the implementation modes.

[0061] In a first aspect, the present application provides a PTC heating component, such as Figure 1As shown, the PTC heating component includes: a plurality of PTC heating elements 10 and a conductive plate 20. Among them, the plurality of PTC heating elements 10 are arranged in parallel in the same arrangement plane, and each PTC heating element 10 is flat and connected with a first electrode 11 and a second electrode 12. The conductive plate 20 has a first connecting portion (not shown in the figure) and / or a second connecting portion (not shown in the figure) insulated from each other, the first connecting portion is electrically connected to the first electrode 11 of each PTC heating element 10, and correspondingly, the second connecting portion is electrically connected to the second electrode 12 of each PTC heating element 10, the first electrode 11 and the second electrode 12 are respectively the positive and negative poles of the PTC heating element, and the first electrode 11 and the second electrode 12 of each PTC heating element 10 are connected through one or more conductive plates 20 to realize the energization and heating of the PTC heating element 10.

[0062] In such a structure, the grouping and synchronous control of multiple PTC heating elements 10 can be achieved by grouping the first connection part and / or the second connection part, so as to improve the overall working flexibility and pertinence of the PTC heating assembly. For example, a first connection part and three second connection parts can be set to divide all PTC heating elements into three groups, wherein the first connection part remains energized, and at this time, by controlling the on and off of the three second connection parts, the corresponding three groups of PTC heating elements can be controlled individually or in a time-sharing manner.

[0063] As for the connection form between the first electrode 11 and the second electrode 12 and the conductive plate 20, in order to adapt to different external electrical connection structures, such as Figure 1 As shown, the first electrode 11 and the second electrode 12 of each PTC heating element 10 are both oriented toward the first side, and the conductive plate 20 is located on the first side of the PTC heating element 10 .

[0064] Alternatively, the first electrode 11 of each PCT heating element 10 faces the first side, the second electrode 12 of each PCT heating element 10 faces the second side opposite to the first side, a conductive plate 20 is located on the first side and electrically connected to each first electrode 11, and another conductive plate 20 is located on the second side and electrically connected to each second electrode 12.

[0065] Or, if Figure 2As shown, the first electrodes 11 and the second electrodes 12 of some PTC heating elements 10 are both oriented toward the first side, and the first electrodes 11 and the second electrodes 12 of other PTC heating elements 10 are both oriented toward the second side opposite to the first side, one conductive plate 20 is located on the first side of the PTC heating element 10 and is electrically connected to a portion of the first electrodes 11 and the second electrodes 12, and another conductive plate 20 is located on the second side of the PTC heating element 10 and is electrically connected to another portion of the first electrodes 11 and the second electrodes 12. In some preferred embodiments, the PTC heating elements 10 with the first electrodes 11 and the second electrodes 12 oriented toward the first side and the PTC heating elements 10 with the first electrodes 11 and the second electrodes 12 oriented toward the second side are arranged alternately with each other.

[0066] In addition, combined Figure 1 , 2 As shown in Figures 4 and 5, the PTC heating component provided in the present application also includes a frame 30 for accommodating a plurality of PTC heating elements 10. The frame 30 is in the shape of a flat plate extending along the arrangement plane of the PTC heating elements, so that the plurality of PTC heating elements 10 are all insulated and sealed in the same frame 30, which facilitates the connection of the PTC heating component as a whole with other external components.

[0067] In the PTC heating component provided in the present application, its multiple PTC heating elements are arranged in parallel in the same layout plane, and each PTC heating element is powered by a conductive plate. Without affecting the use and heating effect of the PTC heating elements, the overall thickness of the PTC heating device is reduced and its heat transfer efficiency is improved by horizontally placing each PTC heating element.

[0068] In a second aspect, the present application also provides an electric heating device, which can have a variety of structural appearances.

[0069] In an electric heating device structure provided by the present application, Figure 4 As shown, the electric heating device includes: a first heat exchanger 100, a second heat exchanger 200, and a PTC heating component 300 sandwiched between the first heat exchanger 100 and the second heat exchanger 200. Below, this application takes the first heat exchanger 100 located at the lower side of the PTC heating component 300 and the second heat exchanger 200 located at the upper side of the PTC heating component 300 as an example to illustrate the internal structure of the electric heating device.

[0070] The first heat exchanger 100 includes a first heat exchange chamber 102 having an inlet 101, the second heat exchanger 200 includes a second heat exchange chamber 202 having an outlet 201, the PTC heating component 300 is clamped between the first heat exchange chamber 102 and the second heat exchange chamber 202, and the second heat exchange chamber 202 is in fluid communication with the first heat exchange chamber 102, so that the inlet 101 is in fluid communication with the outlet 201. Figure 4 As shown by the arrows, the fluid medium flows from the inlet 101 of the first heat exchanger 100 into the first heat exchange cavity 102 and the second heat exchange cavity 202 of the second heat exchanger 200 in sequence, and flows out from the outlet 201 of the second heat exchanger 200. When the PTC heating component 300 generates heat, heat can be exchanged with the fluid medium in the first heat exchange cavity 102 and the second heat exchange cavity 202 from both sides thereof.

[0071] Alternatively, in another structure of the electric heating device, the Figure 3 , 5 As shown, the electric heating device also includes: a first heat exchanger 100, a second heat exchanger 200, and a PTC heating component 300 sandwiched between the first heat exchanger 100 and the second heat exchanger 200. However, the first heat exchanger 100 is not only provided with an inlet 101, but also provided with an outlet 201. The second heat exchanger 200 includes a second heat exchange chamber 202. The PTC heating component 300 is also clamped between the first heat exchange chamber 102 of the first heat exchanger 100 and the second heat exchange chamber 202 of the second heat exchanger 200. And the second heat exchange chamber 202 is fluidically connected with the first heat exchange chamber 102, and the outlet 201 in the first heat exchanger 100 is first connected to the first heat exchange chamber 102 of the first heat exchanger 100 through the second heat exchange chamber 202 of the second heat exchanger 200, so that the inlet 101 and the outlet 201 are fluidically connected. As shown Figure 5 As shown in the direction of the middle arrow, the fluid medium also flows into the first heat exchange cavity 102 and the second heat exchange cavity 202 of the second heat exchanger from the inlet 101 of the first heat exchanger 100 in sequence, and flows out from the outlet 201 of the first heat exchanger 100. When the PTC heating component 300 generates heat, it can also exchange heat with the fluid medium in the first heat exchange cavity 102 and the second heat exchange cavity 202 from both sides thereof.

[0072] It can be understood that the first heat exchanger 100 and the second heat exchanger 200 in the present application have a modular and symmetrical structural design. It is only necessary to punch holes and weld the inlet 101 and the outlet 201 at different positions of the cavity according to the external installation environment to change the direction of the inlet 101 and the outlet 201, thereby adapting to the current installation environment, and the cavity of the electric heating device and the entire internal structure do not need to be redesigned and assembled.

[0073] In the structures of the above two electric heating devices, the PTC heating assembly 300 is the PTC heating assembly described in the first aspect, and the multiple PTC heating elements 10 of the PTC heating assembly 300 are insulated and sealed in the same frame 30, and the frame 30 is a flat plate extending along the arrangement plane of the multiple PTC heating elements 10. The frame 30 is used to connect the first heat exchanger 100 and the second heat exchanger 200.

[0074] Corresponding to the two structures of the above-mentioned electric heating device, the first heat exchanger 100 further includes: a first shell 110, which is arranged on the first side of the PTC heating component 300 and defines a first heat exchange cavity 102 between the PTC heating component 300, and the inlet 101 is arranged on the first shell 110 and directly communicates with the first heat exchange cavity 102. The second heat exchanger 200 further includes: a second shell 210 and a bottom plate 220, which is arranged on the second side of the PTC heating component 300 opposite to the first side and defines a second heat exchange cavity 202 between the bottom plate 220, and the outlet 201 is arranged on the second shell 210 and directly communicates with the second heat exchange cavity 202. The bottom plate 220 is used to cooperate with the upper shell to seal the second heat exchange cavity 202.

[0075] Alternatively, the first heat exchanger 100 further includes: a first shell 110, which is disposed on a first side of the PTC heating component 300 and defines a first heat exchange cavity 102 between the PTC heating component 300, and the inlet 101 is disposed on the first shell 110 and directly communicates with the first heat exchange cavity 102, and the second heat exchanger 200 further includes: a second shell 210 and a bottom plate 220, the second shell 210 is disposed on a second side of the PTC heating component 300 opposite to the first side and defines a second heat exchange cavity 202 between the bottom plate 220. However, the outlet 201 is disposed on the first shell 110 and communicates with the first heat exchange cavity 102 via the second heat exchange cavity 202. .

[0076] Furthermore, in the above two electric heating device structures, a first heat exchange structure is disposed in the first heat exchange cavity 102 of the first heat exchanger 100, and a second heat exchange structure is disposed in the second heat exchange cavity 202 of the second heat exchanger 200. The first heat exchange structure and the second heat exchange structure both include fins 40, and the fluid medium exchanges heat with the fins 40 when flowing through the fins 40. (This description is problematic, as heat is transferred from the bottom plate to the fins, and then the fins and the fluid medium exchange heat. In fact, there is almost no heat exchange between the heat exchange cavity and the fluid)

[0077] In the above two structures, the frame 30 is provided with a transition channel 31 extending in a direction perpendicular to the arrangement plane of the PTC heating element 10, and the bottom plate 220 is provided with a through hole for the flow of the fluid medium. The transition channel 31 is used to connect the first heat exchange cavity 102 and the second heat exchange cavity 202 in the frame 30, so that the fluid medium can flow from the first heat exchange cavity 102 to the second heat exchange cavity 202 through the transition channel 31 and the through hole in the bottom plate 220.

[0078] More specifically, Figure 4 , 5As shown, the transition channel 31 includes a first vertical section 311, a second vertical section 312 and a transverse transition section 313. The first vertical section 311 extends in a direction perpendicular to the plane where the PTC heating element is arranged and is directly connected to the first heat exchange chamber 102, the second vertical section 312 extends in a direction perpendicular to the plane where the PTC heating element is arranged and is directly connected to the second heat exchange chamber 202, and the transverse transition section 313 extends along the plane where the PTC heating element is arranged on the frame 30 and connects the first vertical section 311 and the second vertical section 312. The fluid medium first flows from the first heat exchange chamber 102 into the first vertical section 311 and flows vertically in the first vertical section 311, then flows horizontally through the transverse transition section 313, and then flows vertically into the second vertical section 312, and finally flows out from the second vertical section 312 through the through hole of the bottom plate 220 to the second heat exchange chamber 202.

[0079] Alternatively, the transition channel 31 only includes: a first vertical section 311 and a second vertical section 312. The first vertical section 311 extends in a direction perpendicular to the arrangement plane and is directly connected to the first heat exchange chamber 102, and the second vertical section 312 extends in a direction perpendicular to the arrangement plane and is directly connected to the second heat exchange chamber 202, and the first vertical section 311 and the second vertical section 312 are coaxial and overlap each other. The fluid medium first flows from the first heat exchange chamber 102 into the first vertical section 311 and flows vertically in the first vertical section 311, then flows directly vertically into the second vertical section 312, and finally flows out from the second vertical section 312 through the through hole in the bottom plate 220 to the second heat exchange chamber 202.

[0080] It has been explained above that the inlet 101 and the outlet 201 can be respectively arranged in the first heat exchanger 100 and the second heat exchanger 200, or can be uniformly arranged in the first heat exchanger 100. In both cases, the inlet 101 and the outlet 201 can be arranged in various directions to adapt to different external installation structures, such as Figure 6 As shown, it includes: the inlet 101 and the outlet 201 are oriented in the same direction or in different directions. In some preferred embodiments, the inlet 101 and the outlet 201 are oriented in parallel to each other, and / or the inlet 101 and the outlet 201 are spaced apart from each other in the length direction and / or the width direction and / or the height direction.

[0081] Understandably, Figure 6 Only several embodiments of the electric heating device structure are shown. According to the present application, the directions of the inlet 101 and the outlet 201 can have various combinations, and these deformations are within the protection scope of the present application.

[0082] In the case where both the inlet 101 and the outlet 201 are provided on the first shell 110, since the fluid medium needs to flow out from the outlet 201 in the first heat exchanger 100 after flowing from the first heat exchange chamber 102 through the second heat exchange chamber 202, in order to ensure that the fluid medium does not flow through the first heat exchange chamber 102 and the second heat exchange chamber 202, the first shell 110 is provided with a plurality of inlet ports 101 and 201. Figure 5 , 7 As shown, an isolation chamber 33 needs to be provided in the first heat exchange chamber 102, and a reflux hole 32 needs to be provided on the frame 30. The isolation chamber 33 is communicated with the outlet 201 and is isolated and sealed from the first heat exchange chamber 102.

[0083] The electric heating device provided in the present application includes a first heat exchanger, a second heat exchanger, and a PTC heating component sandwiched between the first heat exchanger and the second heat exchanger, so that the PTC heating component can heat the fluid medium in the two heat exchangers at the same time, thereby improving the heating efficiency. The inlet and outlet in the present application can be respectively arranged in the first heat exchanger and the second heat exchanger, or can be concentrated in the first heat exchanger, so that the orientation of the inlet and the outlet can form a variety of external connection methods, so that the present application can be adapted to a variety of installation environments.

[0084] The preferred embodiments of the present application are described in detail above; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0085] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0086] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A PTC heating component, comprising: A plurality of PTC heating elements (10), the plurality of PTC heating elements (10) being arranged in parallel in the same arrangement plane, each PTC heating element (10) being flat in shape and connected to a first electrode (11) and a second electrode (12); and A conductive plate (20) having a first connection portion and / or a second connection portion insulated from each other, wherein the first connection portion is electrically connected to a first electrode (11) of each PTC heating element (10), and the second connection portion is electrically connected to a second electrode (12) of each PTC heating element (10).

2. The PTC heating component according to claim 1, wherein: The first electrode (11) and the second electrode (12) of each PTC heating element (10) are both oriented toward a first side, and the conductive plate (20) is located on the first side of the PTC heating element (10); or The first electrode (11) of each PCT heating element (10) faces a first side, the second electrode (12) of each PCT heating element (10) faces a second side opposite to the first side, a conductive plate (20) is located on the first side and electrically connected to each first electrode (11), and another conductive plate (20) is located on the second side and electrically connected to each second electrode (12).

3. The PTC heating component according to claim 1, wherein: The first electrodes and the second electrodes of some PTC heating elements (10) are both oriented toward a first side, and the first electrodes and the second electrodes of other PTC heating elements (10) are both oriented toward a second side opposite to the first side, a conductive plate is located on the first side of the PTC heating element (10), and another conductive plate is located on the second side of the PTC heating element (10).

4. The PTC heating component according to claim 3, wherein: The PTC heating elements whose first electrodes and second electrodes face the first side and the PTC heating elements whose first electrodes and second electrodes face the second side are arranged alternately with each other.

5. The PTC heating component according to any one of claims 1 to 4, wherein: The plurality of PTC heating elements are all insulated and sealed and arranged in the same frame (30), and the frame (30) is in the shape of a flat plate extending along the arrangement plane.

6. An electric heating device, wherein: The electric heating device comprises: A first heat exchanger (100), the first heat exchanger (100) comprising a first heat exchange chamber (102) having an inlet (101); and A second heat exchanger (200), the second heat exchanger (200) comprising a second heat exchange chamber (202) having an outlet (201), the second heat exchange chamber (202) being in fluid communication with the first heat exchange chamber (102), so that the inlet (101) is in fluid communication with the outlet (201); and A PTC heating component (300), the PTC heating component (300) being clamped between a first heat exchange chamber (102) of the first heat exchanger and a second heat exchange chamber (202) of the second heat exchanger; or The electric heating device comprises: A first heat exchanger (100), the first heat exchanger (100) comprising a first heat exchange chamber (102) having an inlet (101); and a second heat exchanger (200), the second heat exchanger (200) comprising a second heat exchange chamber (202), the second heat exchange chamber (202) being in fluid communication with the first heat exchange chamber (102), the first heat exchanger (100) being provided with an outlet (201), the outlet (201) being in fluid communication with the first heat exchange chamber (102) via the second heat exchange chamber (202), so that the inlet (101) is in fluid communication with the outlet (201); and A PTC heating component (300) is clamped between a first heat exchange chamber (102) of the first heat exchanger (100) and a second heat exchange chamber (202) of the second heat exchanger (200).

7. The electric heating device according to claim 6, wherein: The PTC heating component (300) is the PTC heating component described in claim 5.

8. The electric heating device according to claim 7, wherein: The first heat exchanger (100) comprises: a first shell (110), the first shell (110) being arranged on a first side of the PTC heating component (300) and defining the first heat exchange cavity (102) between the first shell (110) and the PTC heating component (300), the inlet (101) being arranged on the first shell (110) and directly communicating with the first heat exchange cavity (102); The second heat exchanger (200) comprises: a second shell (210) and a bottom plate (220); the second shell (210) is arranged on a second side of the PTC heating component (300) opposite to the first side and defines a second heat exchange cavity (202) between the second shell (210) and the bottom plate (220); the outlet (201) is arranged in the second shell (210) and is directly connected to the second heat exchange cavity (202); or The first heat exchanger (100) comprises: a first shell (110), the first shell (110) being arranged on a first side of the PTC heating component (300) and defining the first heat exchange cavity (102) between the first shell (110) and the PTC heating component (300), the inlet (101) being arranged on the first shell (110) and directly communicating with the first heat exchange cavity (102); The second heat exchanger (200) comprises: a second shell (210) and a base plate (220); the second shell (210) is arranged on a second side of the PTC heating component (300) opposite to the first side and defines a second heat exchange cavity (202) between the second shell and the base plate (220); the outlet (201) is arranged on the first shell (110) and communicates with the first heat exchange cavity (102) via the second heat exchange cavity (202).

9. The electric heating device according to claim 8, wherein: A first heat exchange structure is provided in the first heat exchange cavity (102) of the first heat exchanger (100), and a second heat exchange structure is provided in the second heat exchange cavity (202) of the second heat exchanger (200); A transition channel (31) is provided on the frame (30) and a through hole is provided in the bottom plate (220); the transition channel (31) and the through hole communicate with the first heat exchange chamber (102) and the second heat exchange chamber (202).

10. The electric heating device according to claim 9, wherein: The transition flow channel (31) extends in a direction perpendicular to the arrangement plane.

11. The electric heating device according to claim 9, wherein: The transition channel (31) comprises: A first vertical section (311), the first vertical section (311) extending in a direction perpendicular to the arrangement plane and directly communicating with the first heat exchange chamber (102); a second vertical section (312), the second vertical section (312) extending in a direction perpendicular to the arrangement plane and directly communicating with the second heat exchange chamber (202); and a transverse transition section (313) extending on the frame (30) along the arrangement plane and connecting the first vertical section (311) and the second vertical section (312); or The transition channel (31) comprises: A first vertical section (311), the first vertical section (311) extending in a direction perpendicular to the arrangement plane and directly communicating with the first heat exchange chamber (102); A second vertical section (312) extends in a direction perpendicular to the arrangement plane and is directly connected to the second heat exchange chamber (202), and the first vertical section (311) and the second vertical section (312) are coaxial and overlap each other.

12. The electric heating device according to claim 6, wherein: The inlet (101) and the outlet (201) face the same direction or face different directions. Preferably, the inlet (101) and the outlet (201) face in parallel with each other; and / or The inlet (101) and the outlet (201) are arranged at intervals from each other in the length direction and / or the width direction and / or the height direction.

13. The electric heating device according to claim 8, wherein: In the case where the inlet (101) and the outlet (201) are arranged on the first shell (110), an isolation chamber (33) is arranged in the first heat exchange chamber (102), the isolation chamber (33) is communicated with the outlet (201) and is isolated and sealed from the first heat exchange chamber (102), and a reflux hole (32) is arranged on the frame (30), the reflux hole (32) is connected with the second heat exchange chamber (202) and the isolation chamber (33).

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