A thermal insulation pad for a battery pack

Abstract

The utility model belongs to the technical field of heat insulation pad, especially is a kind of heat insulation pad for battery pack, including heat insulation pad body, the heat insulation pad body includes heat insulation layer, fire -retardant layer and buffer layer are sequentially arranged on the upside and downside of heat insulation layer, the outside of buffer layer and fire -retardant layer is all attached with heat conducting layer, the buffer layer is silica gel bubble cotton material, the heat insulation layer is composed of aerogel material, the heat conducting layer is metal foil material, the fire -retardant layer is formed by the interweaving of aerogel felt material and fire -retardant bubble cotton material.The utility model has excellent mechanical strength and electric insulation by heat insulation pad body, can bear certain pressure and impact, protect the safe operation of battery and other electrical equipment;Through heat insulation layer, fire -retardant layer, buffer layer and heat conducting layer, the performance of heat insulation pad body can be enhanced, and service life is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat insulation pad technology, specifically a heat insulation pad for battery packs. Background Technology

[0002] The thermal insulation pad of the battery pack is used to isolate the individual battery cells or the battery cells and the battery pack. It can effectively prevent short circuits between battery cells and improve the safety and stability of the battery pack. At present, the thermal insulation pads in the existing technology usually do not have flame retardant effect and cannot block the spread of flames when the battery experiences thermal runaway. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a heat insulation pad for battery packs, which solves the problems mentioned in the background section.

[0005] (II) Technical Solution.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A heat insulation pad for a battery pack includes a heat insulation pad body, the heat insulation pad body includes a heat insulation layer, a flame retardant layer and a buffer layer are sequentially disposed on the upper and lower sides of the heat insulation layer, and a heat-conducting layer is attached to the outer side of both the buffer layer and the flame retardant layer.

[0008] Furthermore, the buffer layer is made of silicone foam material.

[0009] Furthermore, the heat insulation layer is composed of an aerogel material.

[0010] Furthermore, the thermally conductive layer is made of metal foil material.

[0011] Furthermore, the flame-retardant layer is composed of an aerogel felt material and a flame-retardant foam material interwoven together.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, the present invention provides a heat insulation pad for battery packs, which has the following advantages:

[0014] This invention features a heat insulation pad with excellent mechanical strength and electrical insulation, enabling it to withstand certain pressure and impact, thus protecting the safe operation of batteries and other electrical equipment. Furthermore, the heat insulation layer, flame-retardant layer, buffer layer, and thermally conductive layer enhance the performance of the heat insulation pad and extend its service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the heat insulation pad body of this utility model.

[0017] In the diagram: 1. Insulation pad body; 2. Insulation layer; 3. Flame retardant layer; 4. Buffer layer; 5. Thermal conductive layer. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example

[0020] like Figure 1-2 As shown in the figure, an embodiment of the present invention provides a heat insulation pad for a battery pack, including a heat insulation pad body 1. The heat insulation pad body 1 includes a heat insulation layer 2. A flame retardant layer 3 and a buffer layer 4 are sequentially disposed on the upper and lower sides of the heat insulation layer 2. A thermally conductive layer 5 is attached to the outer side of both the buffer layer 4 and the flame retardant layer 3. The heat insulation pad body 1 has excellent mechanical strength and electrical insulation properties, and can withstand certain pressure and impact, protecting the safe operation of the battery and other electrical equipment. The heat insulation layer 2, flame retardant layer 3, buffer layer 4 and thermally conductive layer 5 can enhance the performance of the heat insulation pad body 1 and improve its service life.

[0021] like Figure 2 As shown, in some embodiments, the buffer layer 4 is made of silicone foam. Silicone foam is a polymeric elastomer that combines the high elasticity of silicone with the sound insulation and shock absorption properties of foam materials. Its porous and low-density characteristics make it widely used in vibration damping pads, sealing gaskets, sound-absorbing materials, and insulation materials. Silicone foam has excellent sound insulation, shock absorption, and flame-retardant properties, making it suitable for components such as electric vehicle seats and headrests, as well as for insulation and protection of critical parts such as battery packs and wiring harnesses. Furthermore, silicone foam also has excellent resistance to compression set and creep, resisting material collapse after long-term use and extending battery life.

[0022] like Figure 2As shown, in some embodiments, the thermal insulation layer 2 is composed of aerogel material. Aerogel is an advanced material composed of silica aerogel and a fiber substrate, characterized by low thermal conductivity, high temperature resistance limit, lightweight, and excellent thermal insulation and fire resistance. Its thermal conductivity is extremely low, typically between 0.013 and 0.018 W / (m·K), effectively blocking heat transfer and protecting the battery module from high temperatures. Furthermore, aerogel material can withstand temperatures up to 450℃-1000℃, making it suitable for battery modules operating under extreme conditions. As a highly efficient thermal insulation material, aerogel not only possesses excellent thermal insulation and flame retardant properties but also effectively reduces the risk of thermal runaway, improving battery safety and stability.

[0023] like Figure 2 As shown, in some embodiments, the thermally conductive layer 5 is a metal foil material; this enhances thermal conductivity, protects the aerogel, and extends its service life.

[0024] like Figure 2 As shown, in some embodiments, the flame-retardant layer 3 is made of interwoven aerogel felt material and flame-retardant foam material; materials such as aerogel felt and flame-retardant foam perform well in terms of heat insulation and fire prevention, and are often used as protective layers for battery packs.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat insulation pad for a battery pack, comprising a heat insulation pad body (1), characterized in that: The heat insulation pad body (1) includes a heat insulation layer (2), and a flame retardant layer (3) and a buffer layer (4) are arranged on the upper and lower sides of the heat insulation layer (2) respectively. A heat-conducting layer (5) is attached to the outer side of both the buffer layer (4) and the flame retardant layer (3).

2. The heat insulation pad for a battery pack according to claim 1, characterized in that: The buffer layer (4) is made of silicone foam.

3. The heat insulation pad for a battery pack according to claim 1, characterized in that: The heat insulation layer (2) is composed of aerogel material.

4. The heat insulation pad for a battery pack according to claim 1, characterized in that: The heat-conducting layer (5) is made of metal foil.

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