Silica gel type lithium battery heating film

Abstract

The utility model discloses a silica gel type lithium battery heating film, which relates to the technical field of heating films, and comprises a heating wire main body, the outer surface of the heating wire main body is provided with a shell assembly wrapping the heating wire main body, the shell assembly comprises a heat conduction silica gel sleeve, and the heat conduction silica gel sleeve is arranged on the outer side of the heating wire main body. A heating wire mounting groove matched with the heating wire main body is formed in the heat-conducting silicon rubber case, and the heating wire mounting groove is used for mounting the heating wire main body; the silica gel sealing plate is arranged at one end of the heat conduction silica gel sleeve; and the sealing assembly is arranged on one side of the silica gel sealing plate, and a notch is formed in one side of the heat conduction silica gel sleeve. According to the utility model, by arranging the shell assembly and utilizing the good flexibility of the heat-conducting silicon rubber case, the change along with the expansion of the battery is facilitated, and by matching with the S-shaped heating wire, the better deformation of the whole heating film is facilitated, so that the separation between the heating film and the battery or the damage to the heating film caused by the expanded battery is avoided.

Description

Technical Field

[0001] The utility model relates to the field of heating films, in particular to a silica gel type lithium battery heating film. Background Art

[0002] With the development of electric power technology, the power storage performance, durability and safety performance of lithium batteries have been significantly improved. Lithium batteries mainly use manganese dioxide as the positive electrode material, metallic lithium or its alloy metal as the negative electrode material, and use non-aqueous electrolyte solutions. When applied to the automotive field, various new energy electric vehicles have been produced. However, since new energy electric vehicles use lithium batteries as power sources, when driving in cold weather, in order to better exert the performance of lithium batteries, a heating film will be set on the outer surface of the lithium battery, so that the lithium battery provides heat.

[0003] In order to achieve heating, the existing heating films have various structures, but their essence is still a heat-conducting shell wrapped around a heating wire, so that heat is generated by the heating wire and then transferred to the heat-conducting shell, thereby using the heat-conducting shell to provide heat for the lithium battery.

[0004] However, after long-term use, the outer surface of the existing battery will expand. However, the thermal conductive shell of some heating films has poor flexibility and cannot change with the expansion of the battery, so the heating film is partially separated from the battery, and a good heating effect cannot be achieved. The heating film may even be damaged by the expanded battery because the heating film is too tightly connected to the battery. For this reason, we propose a silicone-type lithium battery heating film. Utility Model Content

[0005] The purpose of the utility model is to provide a silicone type lithium battery heating film, which is convenient to change with the expansion of the battery by setting a shell component and utilizing the good flexibility of the heat-conductive silicone sleeve, and is convenient for the entire heating film to deform better with the S-shaped heating wire, so as to avoid the expansion of the battery causing the heating film to separate from the battery or damage the heating film.

[0006] To achieve the above object, the utility model provides the following technical solution: a silica gel type lithium battery heating film, comprising a heating wire body, the outer surface of the heating wire body is provided with a shell component wrapping the heating wire body, the shell component comprises:

[0007] A heat-conductive silicone sleeve, wherein the heat-conductive silicone sleeve is arranged on the outside of the heating wire body, and a heating wire installation groove adapted to the heating wire body is opened inside the heat-conductive silicone sleeve, and the heating wire installation groove is used to install the heating wire body;

[0008] A silicone sealing plate, wherein the silicone sealing plate is arranged at one end of the thermally conductive silicone sleeve;

[0009] A sealing component is arranged on one side of the silicone sealing plate, a slot is provided on one side of the thermally conductive silicone sleeve, and the sealing component is used to seal the slot, a connecting component is arranged between the silicone sealing plate and the thermally conductive silicone sleeve, and the connecting component is used to connect the thermally conductive silicone sleeve and the silicone sealing plate.

[0010] Preferably, the thermally conductive silicone sleeve comprises a sleeve body and a cover plate fixedly connected to one side of the sleeve body.

[0011] Preferably, the heating wire body is S-shaped as a whole, and one end of the heating wire body extends to the outside of the silicone sealing plate.

[0012] Preferably, the sealing assembly includes a connecting sleeve fixedly connected to the side of the silicone sealing plate, an arc-shaped protrusion arranged on the outside of the connecting sleeve and surrounding the connecting sleeve, and an arc-shaped groove opened on the inner wall of the notch and surrounding the notch.

[0013] Preferably, the connecting assembly includes a connecting block fixedly connected to the end of the silicone sealing plate, a threaded hole opened at one end of the connecting block, a connecting groove opened at the end of the thermal conductive silicone sleeve, a bolt groove opened on one side of the connecting groove and a fixing bolt inserted into the bolt groove, and the interior of the threaded hole is threadedly connected to one end of the fixing bolt.

[0014] Preferably, the heating wire installation groove includes a heating wire clamping groove opened on the inner wall surface of the sleeve, a docking groove opened on the inner wall surface of the cover plate and a guide opening arranged on the side of the heating wire clamping groove.

[0015] Technical effects and advantages of the utility model:

[0016] The entire heating wire body is wrapped by a thermally conductive silicone sleeve, which has good thermal conductivity, so that the heat generated by the heating wire body is easily transferred to the battery. The thermally conductive silicone sleeve also has good flexibility. When the battery expands, the thermally conductive silicone sleeve can deform along with it, so that it still contacts the battery, thereby avoiding falling off or insufficient heating, and avoiding damage to the entire shell assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0020] Figure 4 This is a schematic diagram of the heating wire installation groove structure of the utility model.

[0021] In the figure: 1. thermal conductive silicone sleeve; 101. sleeve body; 102. cover plate; 2. silicone sealing plate; 3. heating wire installation groove; 301. heating wire clamping groove; 302. docking groove; 303. guide port; 4. heating wire body; 5. notch; 6. connecting assembly; 601. connecting block; 602. bolt groove; 603. fixing bolt; 604. threaded hole; 605. connecting groove; 7. sealing assembly; 701. connecting sleeve; 702. arc-shaped protrusion; 703. arc-shaped groove. DETAILED DESCRIPTION

[0022] 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.

[0023] The utility model provides Figure 1-4 A silicone-type lithium battery heating film shown in the figure comprises a heating wire body 4, the outer surface of the heating wire body 4 is provided with a shell component that wraps the heating wire body 4, and the shell component comprises: a thermally conductive silicone sleeve 1, the thermally conductive silicone sleeve 1 is arranged on the outer side of the heating wire body 4, and the interior of the thermally conductive silicone sleeve 1 is provided with a heating wire installation groove 3 that is compatible with the heating wire body 4, and the heating wire installation groove 3 is used to install the heating wire body 4; a silicone sealing plate 2, the silicone sealing plate 2 is arranged at one end of the thermally conductive silicone sleeve 1; a sealing component 7, the sealing component 7 is arranged on one side of the silicone sealing plate 2, a notch 5 is provided on one side of the thermally conductive silicone sleeve 1, and the sealing component 7 is used to seal the notch 5, a connecting component 6 is arranged between the silicone sealing plate 2 and the thermally conductive silicone sleeve 1, and the connecting component 6 is used to seal the notch 5. The thermal conductive silicone sleeve 1 is used to connect the thermal conductive silicone sleeve 1 and the silicone sealing plate 2; the entire heating wire body 4 is wrapped by the thermal conductive silicone sleeve 1, wherein the thermal conductive silicone sleeve 1 itself has good thermal conductivity, thereby facilitating the transfer of heat generated by the heating wire body 4 to the battery, and the thermal conductive silicone sleeve 1 also has good flexibility. When the battery expands, the thermal conductive silicone sleeve 1 can be deformed accordingly, thereby still in contact with the battery, thereby avoiding falling off or the phenomenon of insufficient heating, and also avoiding damage to the entire shell assembly, wherein the heating wire mounting groove 3 is provided, convenient for assembling the heating wire body 4, wherein the silicone sealing plate 2 is connected to the thermal conductive silicone sleeve 1 through the connecting component 6, and also convenient for leading the terminal of the heating wire body 4 out of the thermal conductive silicone sleeve 1, thereby facilitating wiring.

[0024] It should be further explained that the thermally conductive silicone sleeve 1 includes a sleeve body 101 and a cover plate 102 fixedly connected to one side of the sleeve body 101; the heating wire installation groove 3 includes a heating wire slot 301 opened on the inner wall surface of the sleeve body 101, a docking groove 302 opened on the inner wall surface of the cover plate 102 and a guide opening 303 arranged on the side of the heating wire slot 301; when the heating wire body 4 needs to be assembled, the heating wire body 4 is inserted into the heating wire slot 301 along the arc-shaped guide opening 303, so that the heating wire body 4 is clamped with the heating wire slot 301, and then the docking groove 302 on the cover plate 102 is docked with the heating wire body 4. At this time, the cover plate 102 is aligned with the sleeve body 101, and then the edge of the cover plate 102 is connected to the edge of the sleeve body 101 by adhesive or hot melt, so as to form the thermally conductive silicone sleeve 1.

[0025] Furthermore, the heating wire body 4 is S-shaped as a whole, and one end of the heating wire body 4 extends to the outside of the silicone sealing plate 2; the S-shaped heating wire body 4 is not only convenient for providing more uniform heat, but also convenient for slight deformation, so as to fit with the battery, and it is convenient to lead the heating wire body 4 to the outside through the silicone sealing plate 2, so as to facilitate wiring.

[0026] It should be particularly noted that the sealing assembly 7 includes a connecting sleeve 701 fixedly connected to the side of the silicone sealing plate 2, an arc-shaped protrusion 702 arranged on the outside of the connecting sleeve 701 and surrounding the connecting sleeve 701, and an arc-shaped groove 703 opened on the inner wall of the slot 5 and surrounding the slot 5; the silicone sealing plate 2 is aligned with the slot 5, and then the connecting sleeve 701 is inserted into the slot 5 until the arc-shaped protrusion 702 is engaged with the arc-shaped groove 703, thereby using the sealing assembly 7 to complete the sealing between the silicone sealing plate 2 and the thermally conductive silicone sleeve 1.

[0027] It should be noted that the connecting component 6 includes a connecting block 601 fixedly connected to the end of the silicone sealing plate 2, a threaded hole 604 opened at one end of the connecting block 601, a connecting groove 605 opened at the end of the thermal conductive silicone sleeve 1, a bolt groove 602 opened on one side of the connecting groove 605 and a fixing bolt 603 inserted into the bolt groove 602, and the interior of the threaded hole 604 is threadedly connected to one end of the fixing bolt 603; when the connecting component 6 is needed to connect the silicone sealing plate 2 with the thermal conductive silicone sleeve 1, after the above-mentioned connecting sleeve 701 is inserted into the slot 5 and the sealing component 7 completes the sealing, the connecting block 601 is inserted into the connecting groove 605, and then the fixing bolt 603 is inserted into the bolt groove 602, and then the fixing bolt 603 is rotated so that the fixing bolt 603 is connected to the threaded hole 604.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to 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 utility model shall be included in the protection scope of the present utility model.

Claims

1. A silica gel type lithium battery heating film, comprising a heating wire body (4), characterized in that: The outer surface of the heating wire body (4) is provided with a shell component that wraps the heating wire body (4), and the shell component comprises: A heat-conducting silicone sleeve (1), the heat-conducting silicone sleeve (1) being arranged on the outside of the heating wire body (4), the heat-conducting silicone sleeve (1) being provided with a heating wire installation groove (3) adapted to the heating wire body (4), and the heating wire installation groove (3) being used for installing the heating wire body (4); A silicone sealing plate (2), wherein the silicone sealing plate (2) is arranged at one end of the heat-conducting silicone sleeve (1); A sealing component (7), wherein the sealing component (7) is arranged on one side of the silicone sealing plate (2), a notch (5) is provided on one side of the thermally conductive silicone sleeve (1), and the sealing component (7) is used to seal the notch (5), and a connecting component (6) is provided between the silicone sealing plate (2) and the thermally conductive silicone sleeve (1), and the connecting component (6) is used to connect the thermally conductive silicone sleeve (1) and the silicone sealing plate (2).

2. A silica gel type lithium battery heating film according to claim 1, characterized in that: The heat-conductive silicone sleeve (1) comprises a sleeve body (101) and a cover plate (102) fixedly connected to one side of the sleeve body (101).

3. The silica gel type lithium battery heating film according to claim 1, characterized in that: The heating wire body (4) is in an S-shape as a whole, and one end of the heating wire body (4) extends to the outside of the silicone sealing plate (2).

4. The silica gel type lithium battery heating film according to claim 1, characterized in that: The sealing assembly (7) comprises a connecting sleeve (701) fixedly connected to the side of the silicone sealing plate (2), an arc-shaped protrusion (702) arranged on the outside of the connecting sleeve (701) and surrounding the connecting sleeve (701), and an arc-shaped groove (703) opened on the inner wall surface of the notch (5) and surrounding the notch (5).

5. The silica gel type lithium battery heating film according to claim 1, characterized in that: The connection assembly (6) comprises a connection block (601) fixedly connected to the end of the silicone sealing plate (2), a threaded hole (604) opened at one end of the connection block (601), a connection groove (605) opened at the end of the thermal conductive silicone sleeve (1), a bolt groove (602) opened at one side of the connection groove (605) and a fixing bolt (603) inserted into the bolt groove (602), and the interior of the threaded hole (604) is threadedly connected to one end of the fixing bolt (603).

6. The silica gel type lithium battery heating film according to claim 2, characterized in that: The heating wire installation groove (3) comprises a heating wire clamping groove (301) provided on the inner wall surface of the sleeve (101), a docking groove (302) provided on the inner wall surface of the cover plate (102), and a guide opening (303) provided on the side of the heating wire clamping groove (301).

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