Electric heating assembly and heater

Abstract

The invention relates to the technical field of electric heaters, in particular to an electric heating assembly and a heater. The electric heating assembly comprises a heating unit, a conductive unit and an insulating unit; the heating unit, the conductive unit and the insulating unit are sequentially arranged in a stacked mode in the thickness direction of the electric heating assembly. The conductive unit is connected with the heating unit; the insulating unit covers one side, deviating from the heating unit, of the conductive unit; each insulating unit comprises an insulating layer and two adhesive layers; the two adhesive layers are respectively coated on the two sides of the insulating layer in the thickness direction; one adhesive layer can be adhered to the conductive unit, and the other adhesive layer can be adhered to the heat transfer runner; the adhesive layer is configured to have thermal conductivity so as to transmit heat generated by the heating unit to the heat transfer runner through the conductive unit and the insulating unit in sequence. Therefore, the connection mode of the insulating layer can be simplified, and heat transfer efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric heaters, and in particular to an electric heating component and a heater. Background Art

[0002] As the earth's resources are gradually decreasing, electric vehicles as new energy sources are being vigorously promoted compared to traditional fuel vehicles, so the PTC heaters required by electric vehicles are also progressing faster and faster. Traditional cars use the coolant of the car engine as the heat source for the car air conditioning warm air, while ordinary electric vehicles can only use wind-heated PTC heaters as the heat source for their warm air. However, pure wind-heated PTC heating has certain risks.

[0003] The working principle of the existing water-heated PTC heater is that the heat of the PTC component or PTC heating sheet is transferred to the coolant through the heat transfer channel. The coolant is carried and flowed through the heat exchanger core, and the heat is transferred to the required place through the medium.

[0004] However, the electrical insulation layer of the PTC element in the prior art requires other fixing components to be fixed and attached to the heat sink. The insulation layer is insulated by an insulation board and insulating yellow paper, wherein the insulation board is a ceramic board, which is easy to break when assembled with the core, and is not easy to fill the contact gap, resulting in low heat transfer efficiency. Summary of the invention

[0005] The objects of the present invention include, for example, providing an electric heating assembly and a heater, which can simplify the connection mode of the insulation layer and improve the heat transfer efficiency.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] In a first aspect, the present invention provides an electric heating component, comprising:

[0008] A heating unit, a conducting unit and an insulating unit;

[0009] Along the thickness direction of the electric heating component, the heating unit, the conductive unit and the insulating unit are sequentially stacked and arranged; the conductive unit is connected to the heating unit, and the insulating unit covers a side of the conductive unit away from the heating unit;

[0010] The insulating unit includes an insulating layer and two adhesive layers; the two adhesive layers are respectively coated on both sides of the insulating layer in the thickness direction; and one of the adhesive layers can be bonded to the conductive unit, and the other adhesive layer can be bonded to the heat transfer channel; the adhesive layer is configured to have thermal conductivity so as to transfer the heat generated by the heating unit to the heat transfer channel through the conductive unit and the insulating unit in sequence.

[0011] In an optional embodiment, the material of the adhesive layer is a mixture of an organic silicon polymer matrix and a thermal conductive filler.

[0012] In an optional embodiment, the insulating layer is an insulating film.

[0013] In an optional embodiment, the insulating layer is made of polyimide.

[0014] In an optional embodiment, the thickness of each adhesive layer is kept consistent along the length direction of the insulating layer.

[0015] In an optional embodiment, the heating unit is a PTC element.

[0016] In an optional embodiment, the heating unit is surrounded by an insulating frame so that the side of the heating unit forms an insulating interface.

[0017] In an optional implementation, the insulating frame is made of plastic or rubber.

[0018] In an optional embodiment, the adhesive layer is bonded to the conductive unit or the heat transfer channel by high-temperature curing.

[0019] In a second aspect, the present invention provides a heater, comprising the electric heating component described in any one of the aforementioned embodiments.

[0020] The beneficial effects of the embodiments of the present invention include, for example:

[0021] The electric heating component of the present scheme includes a heating unit, a conductive unit and an insulating unit. The heating unit, the conductive unit and the insulating unit are arranged in sequence; wherein the insulating unit includes an insulating layer and two adhesive layers located on both sides of the thickness of the insulating layer, and the adhesive layers can respectively make one side of the insulating layer bonded to the conductive unit and the other side of the insulating layer bonded to the heat transfer channel. That is, the insulating layer is coated with thermal conductive adhesive on both sides and has a bonding function. In this way, the insulating layer has a bonding function, which can better fill the contact gap, and there is no need to add other fixed parts, so that the connection between the insulating unit and the conductive unit and the connection between the insulating unit and the heat transfer channel can be achieved, which simplifies the process flow. At the same time, the adhesive layer makes the heat conduction path from the heating unit to the heat transfer channel shorter and the heat conduction efficiency higher. In summary, such an electric heating component has the advantages of simple structure, convenient processing, and higher heat transfer efficiency, and therefore has outstanding economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a structural schematic diagram of an electric heating assembly according to an embodiment of the present invention;

[0024] Figure 2 It is a partial enlarged schematic diagram of an electric heating component according to an embodiment of the present invention;

[0025] Figure 3 Another structural schematic diagram of the electric heating assembly according to an embodiment of the present invention.

[0026] Icon: 10-electric heating component; 100-heating unit; 110-insulating frame; 200-conductive unit; 300-insulating unit; 310-insulating layer; 320-adhesive layer; 21-heat transfer channel. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0032] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0033] Please refer to Figure 1 , this embodiment provides an electric heating component 10, comprising:

[0034] A heating unit 100, a conductive unit 200 and an insulating unit 300;

[0035] Along the thickness direction of the electric heating component 10, the heating unit 100, the conductive unit 200 and the insulating unit 300 are sequentially stacked and arranged; the conductive unit 200 is connected to the heating unit 100, and the insulating unit 300 covers the side of the conductive unit 200 away from the heating unit 100;

[0036] The insulating unit 300 includes an insulating layer 310 and two adhesive layers 320; the two adhesive layers 320 are respectively coated on both sides of the insulating layer 310 in the thickness direction; and one of the adhesive layers 320 can be bonded to the conductive unit 200, and the other adhesive layer 320 can be bonded to the heat transfer channel 21; the adhesive layer 320 is configured to have thermal conductivity to transfer the heat generated by the heating unit 100 to the heat transfer channel 21 through the conductive unit 200 and the insulating unit 300 in sequence.

[0037] The electric heating assembly 10 of this solution includes a heating unit 100, a conductive unit 200 and an insulating unit 300. The heating unit 100, the conductive unit 200 and the insulating unit 300 are arranged in sequence; wherein the insulating unit 300 includes an insulating layer 310 and two adhesive layers 320 located on both sides of the thickness of the insulating layer 310, and the adhesive layers can respectively make one side of the insulating layer 310 bonded to the conductive unit 200 and the other side of the insulating layer 310 bonded to the heat transfer channel 21. That is, the insulating layer 310 is coated with thermal conductive adhesive on both sides and has a bonding function. In this way, the insulating layer 310 has a bonding function, which better fills the contact gap, and no other fixing parts are added, so that the connection between the insulating unit 300 and the conductive unit 200 and the connection between the insulating unit 300 and the heat transfer channel 21 can be realized, which simplifies the process flow. At the same time, the adhesive layer 320 makes the heat conduction path from the heating unit 100 to the heat transfer channel 21 shorter and the heat conduction efficiency higher.

[0038] Please read further Figure 1 , Figure 2 and Figure 3 , to understand more structural details of the electric heating component 10.

[0039] The heating unit 100 is a PTC element, which is a PTC heating element, specifically a ceramic heating element. This type of heating element has the advantages of low thermal resistance and high heat exchange efficiency. It is an automatic constant temperature and power-saving electric heater.

[0040] In an optional embodiment, the material of the adhesive layer 320 is a mixture of an organic silicon polymer matrix and a thermal conductive filler. Optionally, the adhesive layer 320 is bonded to the conductive unit 200 or the heat transfer channel 21 by high temperature curing. This further ensures the stability of the connection of the electric heating component 10.

[0041] When in use, the adhesive is in a semi-cured state and is slightly sticky. It can be pre-attached to the conductive unit 200 and the heat transfer channel 21. After pressure is applied, the silicone material deforms and flows, filling the air gap at the contact interface to form a good bonding interface, and then achieves a strong bonding effect through high-temperature curing.

[0042] In an optional embodiment, the insulating layer 310 is an insulating film. Optionally, the insulating layer 310 is made of polyimide. The film has good insulation and good structural strength to ensure the stability of the electric heating component 10.

[0043] from Figure 1 and Figure 2 It can be seen that in an optional embodiment, the thickness of each adhesive layer 320 is kept consistent along the length direction of the insulating layer 310. This can ensure the tightness of the internal connection of the electric heating component 10 and the tightness of the connection between the heating unit 100 and the heat transfer channel 21.

[0044] from Figure 3 It can also be seen that in an optional embodiment, the heating unit 100 is surrounded by an insulating frame 110 so that the side of the heating unit 100 forms an insulating interface. In an optional embodiment, the insulating frame 110 is made of plastic or rubber. Further, Figure 3 The structure of the heating core composed of the electric heating component 10, the heat transfer channel 21, etc. is shown in FIG.

[0045] from Figure 1 It can also be seen that in this embodiment, along the thickness direction of the heating unit 100, one side of the heating unit 100 is bonded to one heat transfer channel 21 through a conductive unit 200 and an insulating unit 300, and the other side of the heating unit 100 is bonded to another adjacent heat transfer channel 21 through another conductive unit 200 and another insulating unit 300. That is, the two sides of the heating unit 100 are bonded between two adjacent heat transfer channels 21 through a conductive unit 200 and an insulating unit 300, respectively.

[0046] In a second aspect, the present invention provides a heater, which comprises the electric heating component 10 of any one of the aforementioned embodiments.

[0047] In summary, the embodiment of the present invention provides an electric heating assembly 10 and a heater, which have at least the following advantages:

[0048] The insulating layer 310 is coated with thermally conductive adhesive on both sides to have an adhesive function.

[0049] The insulating unit 300 can better fill the contact gap and does not require the addition of other fixing parts, thus simplifying the process.

[0050] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An electric heating component, characterized in that: include: A heating unit (100), a conductive unit (200) and an insulating unit (300); Along the thickness direction of the electric heating component, the heating unit (100), the conductive unit (200) and the insulating unit (300) are sequentially stacked and arranged; the conductive unit (200) is connected to the heating unit (100), and the insulating unit (300) covers a side of the conductive unit (200) that is away from the heating unit (100); The insulating unit (300) comprises an insulating layer (310) and two adhesive layers (320); the two adhesive layers (320) are respectively coated on both sides of the insulating layer (310) in a thickness direction; one of the adhesive layers (320) can be bonded to the conductive unit (200), and the other adhesive layer (320) can be bonded to the heat transfer channel (21); the adhesive layer (320) is configured to have thermal conductivity so as to transfer the heat generated by the heating unit (100) to the heat transfer channel (21) through the conductive unit (200) and the insulating unit (300) in sequence.

2. The electric heating assembly according to claim 1, characterized in that: The material of the adhesive layer (320) is a mixture of an organic silicon polymer matrix and a thermal conductive filler.

3. The electric heating assembly according to claim 1, characterized in that: The insulating layer (310) is an insulating film.

4. The electric heating assembly according to claim 3, characterized in that: The material of the insulating layer (310) is polyimide.

5. The electric heating assembly according to claim 1, characterized in that: Along the length direction of the insulating layer (310), the thickness of each adhesive layer (320) remains consistent.

6. The electric heating assembly according to claim 1, characterized in that: The heating unit (100) is a PTC element.

7. The electric heating assembly according to claim 6, characterized in that: The heating unit (100) is surrounded by an insulating frame (110) so that the side surface of the heating unit (100) forms an insulating interface.

8. The electric heating assembly according to claim 7, characterized in that: The insulating frame (110) is made of plastic or rubber.

9. The electric heating assembly according to claim 1, characterized in that: The adhesive layer (320) is bonded to the conductive unit (200) or the heat transfer channel (21) through high-temperature curing.

10. A heater, characterized in that: The heater comprises the electric heating assembly according to any one of claims 1-9.

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