High-temperature-resistant heating film for battery

Abstract

The utility model discloses a battery high temperature resistant type heating film relates to heating film technical field, including heating film main part and auxiliary mechanism, the auxiliary mechanism is provided in the middle of heating film main part, is used to separate heating film main part for use, the auxiliary mechanism includes the spacing cutting line that is provided in the heating film main part, easily-torn mechanisms are arranged on the two sides of the heating film body. According to the utility model, the spacing cutting line is arranged in the middle of the heating film in a short line spacing cutting manner, so that when the heating film needs to be separated for use, the heating film is torn into two parts at the position of the spacing cutting line, and the heating film can be divided into two parts for use; meanwhile, the heating film can be directly used when separate use is not needed, normal use of the heating film cannot be affected by the interval cutting lines, and therefore the use applicability of the heating film is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating films, in particular to a battery high temperature resistant heating film. Background Art

[0002] The heating film is a soft film-like component that can be heated. It can be used in lithium batteries for heating and heat preservation of lithium batteries. The heating film heats the lithium battery to increase its temperature, which can improve the battery's playback performance and service life. At the same time, the heating film can also keep the lithium battery warm in a low temperature environment to prevent the battery from cooling down quickly.

[0003] Silicone heating film is a common heating film. The heating film is obtained by hot pressing a metal heating wire between two pieces of silicone cloth, and then applying adhesive on the surface of the heating film. The heating film can be attached to the battery pack for use.

[0004] However, current heating films are all used in whole pieces. Due to the internal metal heating wire, when the heating film is large, it is impossible to cut the heating film into a smaller size for use, thereby reducing the applicability of the heating film. Utility Model Content

[0005] The utility model aims to provide a battery high temperature resistant heating film to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a battery high temperature resistant heating film, comprising:

[0007] Heating the membrane body;

[0008] The auxiliary mechanism is arranged in the middle of the heating film body and is used to separate the heating film body for use. The auxiliary mechanism includes a spacing cutting line arranged on the heating film body, and easy-tear mechanisms are arranged on both sides of the heating film body.

[0009] Preferably, the easy-tear mechanism comprises guide openings symmetrically opened on both sides of the heating film body, and the positions of the guide openings match the positions of the spacing cutting lines.

[0010] Preferably, the heating film body comprises a first silicone cloth, a second silicone cloth is arranged on the back of the first silicone cloth, and metal heating wires are symmetrically arranged between the first silicone cloth and the second silicone cloth.

[0011] Preferably, the metal heating wire is arranged in an S shape, and the first silicone cloth and the second silicone cloth are arranged by high-temperature hot pressing.

[0012] Preferably, both ends of the metal heating wire respectively pass through the back side of the first silicone cloth and are connected to a connecting wire, one end of the connecting wire is provided with a wiring nose, and a protective sticker is affixed to the front side of the first silicone cloth to cover the position where the metal heating wire passes through the first silicone cloth.

[0013] Preferably, an adhesive layer is provided on the back side of the second silicone cloth, a release film is provided on the back side of the adhesive layer, and an easy-tear film is symmetrically provided on one side of the release film.

[0014] Technical effects and advantages of the utility model:

[0015] The utility model utilizes the setting of a spacing cutting line, and the spacing cutting line is set in the middle part of the heating film by a short-line spacing cutting cutting method. When the heating film needs to be separated for use, the heating film is torn into two at the position of the spacing cutting line, and the heating film can be divided into two parts for use. At the same time, the heating film can be used directly when it does not need to be used separately, and the spacing cutting line will not affect the normal use of the heating film, thereby improving the applicability of the heating film. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point A.

[0018] Figure 3 This is a schematic diagram of the front structure of the metal heating wire of the utility model.

[0019] In the figure: 101, first silicone cloth; 102, second silicone cloth; 103, metal heating wire; 201, spacing cutting line; 301, guide opening; 401, connecting wire; 402, wiring nose; 403, protective sticker; 501, adhesive layer; 502, release film; 503, easy-tear film. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides Figure 1-3A battery high temperature resistant heating film shown includes a heating film body and an auxiliary mechanism, wherein the heating film body includes a first silicone cloth 101, a second silicone cloth 102 is arranged on the back of the first silicone cloth 101, and metal heating wires 103 are symmetrically arranged between the first silicone cloth 101 and the second silicone cloth 102, the metal heating wires 103 are placed between the first silicone cloth 101 and the second silicone cloth 102, and then the metal heating wires 103 are fixed between the first silicone cloth 101 and the second silicone cloth 102 by high temperature hot pressing, so that the heating film can be obtained, wherein the first silicone cloth 101 and the second silicone cloth 102 are both formed by a layer of glass fiber cloth on both sides of which a silicone layer is attached by calendering, so that the heating film has good insulation performance and high temperature resistance, and the heating film heats up evenly and has a longer service life, and by arranging two metal heating wires 103 between the first silicone cloth 101 and the second silicone cloth 102, the heating film can be divided into two parts for use by the auxiliary mechanism, and each of the two parts has a metal heating wire 103, so that the heating film of the two parts can work stably;

[0022] In a preferred embodiment, an auxiliary mechanism is arranged in the middle of the heating film body, and is used to separate the heating film body for use. The auxiliary mechanism includes a spacing cutting line 201 arranged on the heating film body, and easy-tear mechanisms are arranged on both sides of the heating film body. The spacing cutting line 201 is arranged in the middle of the heating film by a short-line spacing cutting cutting method. When the heating film needs to be separated for use, the heating film is torn into two at the position of the spacing cutting line 201, and the heating film can be divided into two parts for use. At the same time, the heating film can be used directly when it does not need to be separated for use. The spacing cutting line 201 will not affect the normal use of the heating film, thereby improving the applicability of the heating film.

[0023] Among them, the easy-to-tear mechanism includes guide openings 301 symmetrically opened on both sides of the heating film body, the position of the guide openings 301 matches the position of the spacing cutting line 201, and the spacing cutting line 201 is processed on the front side of the heating film by short-line interval cutting, and then the triangular guide openings 301 are processed on both sides of the heating film by die-cutting, and the sharp corners of the guide openings 301 are aligned with the spacing cutting line 201. When the heating film needs to be divided into two parts during actual use, by applying opposite forces to the upper and lower parts of the heating film at the position of the guide openings 301, the heating film can be stably torn into two parts through the spacing cutting line 201, thereby improving the convenience of using the heating film.

[0024] Preferably, the metal heating wire 103 is arranged in an S shape, and the first silicone cloth 101 and the second silicone cloth 102 are arranged by high-temperature hot pressing. The metal heating wire 103 is arranged in a multi-segment S shape, so that the metal heating wire 103 can be arranged in a longer length in the first silicone cloth 101 and the second silicone cloth 102, thereby ensuring the heating efficiency of the heating film. At the same time, the longer length makes the heating area of ​​the heating film more uniform, thereby improving the heating effect of the heating film.

[0025] Furthermore, the two ends of the metal heating wire 103 respectively penetrate the back of the first silicone cloth 101 and are connected to the connecting wire 401, one end of the connecting wire 401 is provided with a wiring nose 402, and the front of the first silicone cloth 101 is provided with a protective sticker 403 for covering the position where the metal heating wire 103 penetrates the first silicone cloth 101. The two ends of the metal heating wire 103 are connected by two connecting wires 401, and then the two wiring noses 402 are provided to facilitate connecting the two wiring noses 402 to the external circuit, so that the metal heating wire 103 can provide stable power supply for heating work, and the protective sticker 403 is attached to the first silicone cloth 101 to cover the penetration position of the metal heating wire 103, wherein the protective sticker 403 can protect the penetration position, and the protective sticker 403 will also stick to the connecting wire 401, so as to prevent the connecting wire 401 from directly transmitting force to the metal heating wire 103 after being pulled, thereby preventing the metal heating wire 103 from shifting between the first silicone cloth 101 and the second silicone cloth 102, thereby improving the stability of the heating film.

[0026] Furthermore, an adhesive layer 501 is provided on the back of the second silicone cloth 102, a release film 502 is provided on the back of the adhesive layer 501, and an easy-tear film 503 is symmetrically provided on one side of the release film 502. When the heating film is used, the release film 502 is directly torn off, and then the heating film is adhered to the outer wall of the battery pack through the adhesive layer 501, so that the heating film can be stably used, wherein the adhesive layer 501 can be acrylic glue, which has the excellent properties of fast drying speed, strong viscosity, high temperature resistance, low temperature resistance, and corrosion resistance, ensuring that the heating film can be stably attached to the outer wall of the battery pack for use. The function of the middle release film 502 is that when the heating film is not in use, the release film 502 can cover the adhesive layer 501 to prevent the adhesive layer 501 from directly contacting the external air and causing the viscosity to deteriorate, thereby ensuring that the adhesive layer 501 still has strong viscosity when the heating film is in use. At the same time, the easy-tear film 503 is convexly arranged, that is, the shape of the release film 502 is the same as that of the heating film, and the release film 502 cannot be quickly torn off directly from the back of the adhesive layer 501, but the release film 502 can be quickly torn off from the adhesive layer 501 by pulling the easy-tear film 503, thereby improving the convenience of using the heating film.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery high temperature resistant heating film, characterized in that: include: Heating the membrane body; An auxiliary mechanism is arranged in the middle of the heating film body and is used to separate the heating film body for use. The auxiliary mechanism comprises a spacing cutting line (201) arranged on the heating film body, and easy-tear mechanisms are arranged on both sides of the heating film body.

2. A battery high temperature resistant heating film according to claim 1, characterized in that: The easy-tear mechanism comprises guide openings (301) symmetrically opened on both sides of the heating film body, and the positions of the guide openings (301) match the positions of the spacing cutting lines (201).

3. A battery high temperature resistant heating film according to claim 1, characterized in that: The heating film body comprises a first silicone cloth (101), a second silicone cloth (102) is arranged on the back of the first silicone cloth (101), and metal heating wires (103) are symmetrically arranged between the first silicone cloth (101) and the second silicone cloth (102).

4. A battery high temperature resistant heating film according to claim 3, characterized in that: The metal heating wire (103) is arranged in an S shape, and the first silicone cloth (101) and the second silicone cloth (102) are arranged in a high-temperature hot pressing manner.

5. A battery high temperature resistant heating film according to claim 3, characterized in that: The two ends of the metal heating wire (103) respectively penetrate the back side of the first silicone cloth (101) and are connected to a connecting wire (401), one end of the connecting wire (401) is provided with a wiring nose (402), and the front side of the first silicone cloth (101) is provided with a protective sticker (403) for covering the position where the metal heating wire (103) penetrates the first silicone cloth (101).

6. A battery high temperature resistant heating film according to claim 3, characterized in that: An adhesive layer (501) is arranged on the back of the second silicone cloth (102), a release film (502) is arranged on the back of the adhesive layer (501), and an easy-tear film (503) is symmetrically arranged on one side of the release film (502).

Images