Wear-resistant heating film

Abstract

The utility model discloses a wear-resistant heating film. The wear-resistant heating film comprises a heating film main body, two reinforced wear-resistant layers and a bonding layer, the two reinforced wear-resistant layers are respectively attached to the two surfaces of the heating film main body and are made of polyimide materials; and the bonding layer is attached to the surface of one of the reinforced wear-resistant layers. The two surfaces of the heating film main body are coated with the reinforced wear-resistant layers, so that the strength and the wear resistance of the heating film are improved, the heating film cannot be stressed and deformed even if the heating film is placed at the bottom of the battery module for a long time, the heating film can be used for heating the bottom of the battery module, and the heating film is not easy to damage even if being repeatedly rubbed due to the improvement of the wear resistance; the service life of the heating film is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technology of heating films, in particular to a wear-resistant heating film. Background Art

[0002] In recent years, with the enhancement of the global human environmental protection awareness, the new energy vehicle industry has obtained accelerated development. In new energy vehicles, the mainstream technology is to use a power lithium battery pack as the power source of the vehicle. However, the power lithium battery pack has a fatal weakness that it is difficult to start and use at low temperatures, and the low-temperature environment seriously affects the service life and endurance time of the battery pack. Therefore, in order to eliminate the influence of temperature on the power lithium battery pack, the power lithium battery pack must be effectively thermally managed, and a heating film is arranged in the battery pack, so that when the power lithium battery pack is used in a low-temperature environment, the heating film heats the power lithium battery pack to ensure the normal use of the power lithium battery pack.

[0003] The existing heating films are mostly used on the sides of lithium battery modules and between soft-pack and cylindrical battery cores, cannot bear weight, and cannot heat the bottom of the battery, which limits the application of the heating film. At the same time, the surface of the heating film is not wear-resistant, and because the heating film is sandwiched between two batteries, it will be rubbed by the batteries during use, and the heating film is not wear-resistant, so that the heating film is easily damaged and its service life is shortened. Therefore, it is necessary to improve the existing heating film. Summary of the Utility Model

[0004] In view of this, aiming at the deficiencies existing in the prior art, the main purpose of the utility model is to provide a wear-resistant heating film, which can effectively solve the problems that the existing heating film has low strength, cannot be used for heating the bottom of the battery, and the heating film does not have wear-resistant performance, is easily damaged, and has a short service life.

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

[0006] A wear-resistant heating film includes a heating film main body, two strengthening and wear-resistant layers, and an adhesive layer; the two strengthening and wear-resistant layers are respectively attached to the two surfaces of the heating film main body, and both of the two strengthening and wear-resistant layers are made of polyimide material; the adhesive layer is attached to the surface of one of the strengthening and wear-resistant layers.

[0007] As a preferred scheme, a connection part for connecting with an external mechanism extends from one side of the heating film main body. The design of the connection part enables the external mechanism not to be arranged on the heating film body, and the strengthening and wear-resistant layer can completely cover the heating film main body without generating openings or flanges.

[0008] As a preferred solution, the thickness of both of the two strengthening wear-resistant layers is 0.2 mm. Compared with the traditional design with a film covering thickness of 0.1 mm, the 0.2-mm thickness of the strengthening wear-resistant layer can further enhance the strength and wear resistance of the heating film.

[0009] As a preferred solution, the adhesive layer is a double-sided adhesive.

[0010] Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions:

[0011] By laminating strengthening wear-resistant layers on both surfaces of the heating film body, the strength and wear resistance of the heating film are improved, so that the heating film will not be deformed under force even when placed at the bottom of the battery module for a long time, and it can be used for heating the bottom of the battery module. Moreover, the improvement of the wear resistance enables the heating film not to be easily damaged after repeated friction, effectively prolonging the service life of the heating film.

[0012] To more clearly illustrate the structural features and functions of the present utility model, the following will describe the present utility model in detail with reference to the accompanying drawings and specific embodiments: Description of the Drawings

[0013] Figure 1 is an assembled three-dimensional schematic diagram of a preferred embodiment of the present utility model;

[0014] Figure 2 is an exploded view of a preferred embodiment of the present utility model;

[0015] Figure 3 is a partially enlarged cross-sectional view of a preferred embodiment of the present utility model.

[0016] Description of the Reference Numerals in the Drawings:

[0017] 10. Heating film body 11. Connection part

[0018] 20. Strengthening wear-resistant layer 30. Adhesive layer. Detailed Embodiment

[0019] Please refer to Figures 1 to 3 as shown, which shows the specific structure of a preferred embodiment of the present utility model, including a heating film body 10, two strengthening wear-resistant layers 20, and an adhesive layer 30.

[0020] A connection part 11 for connecting with an external mechanism extends from one side of the heating film body 10. The design of the connection part 11 enables the external mechanism not to be arranged on the heating film body 10, and the strengthening wear-resistant layer 20 can completely cover the heating film body 10 without openings or flanges.

[0021] The two reinforced wear-resistant layers 20 are respectively adhered to the two surfaces of the heating film body 10. The two reinforced wear-resistant layers 20 are both made of polyimide. Polyimide has excellent mechanical properties, high strength and good wear resistance. In this embodiment, the thickness of each of the two reinforced wear-resistant layers 20 is 0.2 mm. Compared with the traditional design with a film coating thickness of 0.1 mm, the 0.2 mm thickness of the reinforced wear-resistant layer 20 can further enhance the strength and wear resistance of the heating film.

[0022] The adhesive layer 30 is adhered to the surface of one of the reinforced wear-resistant layers 20. In this embodiment, the adhesive layer 30 is a double-sided adhesive.

[0023] The design focus of the present utility model lies in: by adhering reinforced wear-resistant layers to the two surfaces of the heating film body, the strength and wear resistance of the heating film are improved, so that the heating film will not be deformed by force even when placed at the bottom of the battery module for a long time, and it can be used for bottom heating of the battery module. Moreover, the improvement of the wear resistance enables the heating film not to be easily damaged after repeated friction, effectively prolonging the service life of the heating film.

[0024] The above is only a preferred embodiment of the present utility model, and does not impose any limitation on the technical scope of the present utility model. Therefore, any minor modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A wear-resistant heating film, characterized in that: It includes a heating film body, two reinforced wear-resistant layers and an adhesive layer; the two reinforced wear-resistant layers are respectively attached to the two surfaces of the heating film body, and the two reinforced wear-resistant layers are both made of polyimide; the adhesive layer is attached to the surface of one of the reinforced wear-resistant layers.

2. The wear-resistant heating film according to claim 1, characterized in that: A connection portion connected to an external mechanism extends from one side of the heating film body.

3. The wear-resistant heating film according to claim 1, characterized in that: The thickness of the two reinforced wear-resistant layers is 0.2 mm.

4. The wear-resistant heating film according to claim 1, characterized in that: The adhesive layer is a double-sided adhesive.

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