Composite heating film

Abstract

The utility model discloses a composite heating film. The composite heating film comprises a heating core, two coating layers and a protective layer, one side of the heating core extends outwards to form a wire outlet position; the two coating layers are respectively coated on the two surfaces of the heating core, and the two coating layers completely cover the heating core and the wire outlet position; and the protective layer is pasted on one of the pasting layers. According to the heating film, one of the coating layers is coated with the protective layer, and when the heating film is used, the other coating layer is in contact with the surface of the battery cell in an attached mode, so that the coating layers of the heating film are not prone to being corroded or abraded by external force to be damaged, the heating core is prevented from being exposed outside, the heating core is prevented from being corroded by external substances or damaged by external force, and the service life of the heating film is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field technology of heating film, especially a composite heating film. BACKGROUND

[0002] At present, the global energy and environmental problems are serious, and the development and utilization of new energy are paid more and more attention, and the most concerned new energy field in recent years is new energy electric vehicle, and major car enterprises have invested in the development of new energy electric vehicle. The vehicle-mounted energy system is one of the three core technologies of electric vehicles, which is equivalent to the engine of the traditional internal combustion engine, and is the only power source of electric vehicles and the heart of electric vehicles. It accounts for 1 / 3 of the proportion of the whole vehicle cost of electric vehicles.

[0003] The existing heating film is coated with a coating layer on both surfaces of the heating core, and the heating film as a heating element usually needs to work in a high acid-base, external force extrusion and abrasion environment; in this case, the coating layer of the heating film is easily corroded or damaged by external force, resulting in the exposure of the heating core, which is easily corroded by external substances or damaged by external force, resulting in short service life. Therefore, it is necessary to improve the existing heating film. SUMMARY

[0004] Therefore, the utility model provides a composite heating film, which can effectively solve the problem of short service life caused by the corrosion or damage of the coating layer of the existing heating film, the exposure of the heating core, and the corrosion or damage of the heating core by external substances or external force.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A composite heating film comprises a heating core, two coating layers and a protective layer; one side of the heating core extends outwardly to have a wire outlet position; the two coating layers are respectively coated on both surfaces of the heating core, and the two coating layers completely cover the heating core and the wire outlet position; the protective layer is coated on one of the coating layers.

[0007] As a preferred scheme, the two coating layers each comprise a coating main body and a coating part, the coating main body completely covers the heating core, and the coating part extends outwardly from one side of the coating main body and completely covers the wire outlet position.

[0008] As a preferred scheme, the protective layer comprises a protective main body and a protective part, the protective main body is coated on the coating main body of one of the coating layers, the protective part extends outwardly from one side of the protective main body, and the protective part completely covers the coating part of one of the coating layers.

[0009] As a preferred solution, further comprising two silica gel ears, one of which is attached to the protective part, and the other is attached to the attached part of the other attached layer, and the design of the silica gel ear further provides protection, effectively protecting the wire outlet position of the heating film from being damaged.

[0010] As a preferred solution, the protective layer is attached to one of the attached layers by a pure glue film.

[0011] As a preferred solution, the attached layer is made of PI material.

[0012] As a preferred solution, the protective layer is made of PP material.

[0013] The utility model has obvious advantages and beneficial effects compared with the prior art, specifically speaking, from the above technical solution, it is known that:

[0014] By attaching a protective layer to one of the attached layers, when in use, the other attached layer is in contact with the surface of the battery cell, so that the attached layer of the heating film is not easily corroded or damaged by external force, and the heating core is not exposed, thereby preventing the heating core from being corroded by external substances or damaged by external force, effectively prolonging the service life of the heating film.

[0015] To more clearly illustrate the structural features and functions of the utility model, the utility model will be described in detail below in combination with the drawings and specific embodiments: BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is the assembled three-dimensional schematic view of the preferred embodiment of the utility model;

[0017] Fig. 2 is an exploded view of the preferred embodiment of the utility model.

[0018] Explanation of the attached drawings:

[0019] 10, heating core 11, wire outlet position

[0020] 20, attached layer 21, attached main body

[0021] 22, attached part 30, protective layer

[0022] 31, protective main body 32, protective part

[0023] 40, pure glue film 50, silica gel ear. DETAILED DESCRIPTION

[0024] Please refer to Figs. 1-2 , which shows the specific structure of the preferred embodiment of the utility model, which comprises a heating core 10, two attached layers 20 and a protective layer 30.

[0025] The heating core 10 extends outward on one side to have a wire outlet position 11; in this embodiment, the thickness of the heating core 10 is 0.05 mm.

[0026] The two adhesive layers 20 are respectively adhered to the two surfaces of the heating core 10, and the two adhesive layers 20 completely cover the heating core 10 and the wire outlet position 11; in this embodiment, the two adhesive layers 20 each include an adhesive main body 21 and an adhesive portion 22, the adhesive main body 21 completely covers the heating core 10, the adhesive portion 22 extends outward on one side of the adhesive main body 21, and the adhesive portion 22 completely covers the wire outlet position 11; and the adhesive layer 20 is made of PI material; in addition, one of the adhesive layers 20 has a thickness of 0.05 mm, and the other adhesive layer 20 has a thickness of 0.08 mm.

[0027] The protective layer 30 is adhered to one of the adhesive layers 20; in this embodiment, the protective layer 30 includes a protective main body 31 and a protective portion 32, the protective main body 31 is adhered to the adhesive main body 21 of one of the adhesive layers 20, the protective portion 32 extends outward on one side of the protective main body 31, and the protective portion 32 completely covers the adhesive portion 22 of one of the adhesive layers 20; the protective layer 30 is made of PP material, and the protective layer 30 is adhered to one of the adhesive layers 20 through a pure adhesive film 40; in addition, the thickness of the protective layer 30 is 0.2 mm, and the thickness of the pure adhesive film 40 is 0.03 mm.

[0028] Further, two silica gel ears 50 are further included, one of the silica gel ears 50 is adhered to the protective portion 32, and the other silica gel ear 50 is adhered to the adhesive portion 22 of the other adhesive layer 20, and the design of the silica gel ear 50 further provides a protection function, effectively protecting the wire outlet position 11 of the heating film from being damaged.

[0029] The design focus of the utility model lies in: through adhering the protective layer to one of the adhesive layers, in use, the other adhesive layer is in contact with the surface of the battery core, so that the adhesive layer of the heating film is not easy to be corroded or damaged by external force, the heating core is prevented from being exposed, so that the heating core is prevented from being corroded by external substances or damaged by external force, and the service life of the heating film is effectively prolonged.

[0030] The above is only a preferred embodiment of the utility model, and does not limit the technical range of the utility model, so any slight modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment still belongs to the range of the technical scheme of the utility model.

Claims

1. A composite heat-generating film, characterized by: It comprises a heating core, two adhesive layers and a protective layer; one side of the heating core extends outwardly to have a wire outlet; the two adhesive layers are respectively adhered to two surfaces of the heating core, and the two adhesive layers completely cover the heating core and the wire outlet; the protective layer is adhered to one of the adhesive layers.

2. The composite heat-generating film according to claim 1, characterized by: The two adhesive layers each comprise an adhesive main body and an adhesive part, the adhesive main body completely covers the heating core, and the adhesive part extends outwardly from one side of the adhesive main body, and the adhesive part completely covers the wire outlet.

3. The composite heat-generating film according to claim 2, characterized by: The protective layer comprises a protective main body and a protective part, the protective main body is adhered to the adhesive main body of one of the adhesive layers, the protective part extends outwardly from one side of the protective main body, and the protective part completely covers the adhesive part of one of the adhesive layers.

4. The composite heat-generating film according to claim 3, characterized by: Further comprising two silica gel ears, one of the silica gel ears is adhered to the protective part, and the other silica gel ear is adhered to the adhesive part of the other adhesive layer.

5. The composite heat-generating film according to claim 1, characterized by: The protective layer is adhered to one of the adhesive layers through a pure glue film.

6. The composite heat-generating film according to claim 1, characterized by: The adhesive layer is made of PI material.

7. The composite heat-generating film according to claim 1, characterized by: The protective layer is made of PP material.

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