Heat absorption type buffer heat insulation pad

Abstract

The utility model discloses a heat absorption type buffer heat insulation pad. The heat absorption type buffer heat insulation pad comprises a buffer frame, an aerogel body and two plastic packaging films, the buffer frame is provided with an accommodating cavity penetrating through the upper and lower surfaces of the buffer frame; the aerogel body is arranged in the accommodating cavity, and the upper surface and the lower surface of the aerogel body are coated with metal foils; and the two plastic packaging films are respectively adhered to the two surfaces of the buffer frame and seal the accommodating cavity. The metal foils are attached to the upper surface and the lower surface of the aerogel body, and the metal foils have excellent heat conduction capability, so that the buffer heat insulation pad can absorb heat generated when the battery cell works and transfer the heat to the outside in time, the temperature of the battery cell is effectively prevented from being too high, the aging rate of the battery cell is relieved, and the safety performance of the battery cell is improved; and the metal foil has better strength, so that the aerogel body can be protected, and the service life of the buffer heat insulation pad is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of heat insulation pads, in particular to a heat-absorbing buffer heat insulation pad. Background Art

[0002] With the development of social economy and the improvement of people's living standards, new energy vehicles have become emerging means of transportation and are loved by many people. The market share of new energy vehicles is getting higher and higher; new energy vehicles have many advantages, such as saving fuel energy, reducing waste gas emissions, effectively protecting the environment, low noise, low usage cost, and so on.

[0003] When a lithium battery discharges, a chemical reaction occurs inside the battery, generating a large amount of heat energy, which causes the temperature of the battery cells inside to rise, making us feel the temperature when touching it with our hands. This is a common phenomenon in most lithium batteries. Frequent heating of the battery cells will cause the battery to age. If it lasts for a long time, it will cause the internal air to expand violently, causing the battery to bulge outwards, and in severe cases, the battery will catch fire. Therefore, in order to ensure that the battery cells do not heat up due to heat transfer, a buffer heat insulation pad is usually sandwiched between two battery cells. However, the existing buffer heat insulation pads only have heat insulation and buffer functions, and can only isolate the heat transfer between the battery cells, but cannot absorb a large amount of heat from the battery cells, and cannot prevent the temperature of the battery cells from being too high, so the speed of battery aging cannot be slowed down. Therefore, it is necessary to improve the existing buffer heat insulation pads. Content of the Utility Model

[0004] In view of this, in view of the deficiencies of the existing technology, the main purpose of the utility model is to provide a heat-absorbing buffer heat insulation pad, which can effectively solve the problem that the existing buffer heat insulation pads cannot absorb a large amount of heat from the battery cells, cannot prevent the temperature of the battery cells from being too high, and thus cannot slow down the speed of battery aging.

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

[0006] A heat-absorbing buffer heat insulation pad includes a buffer frame, an aerogel body, and two plastic-sealed films; the buffer frame is provided with a receiving cavity penetrating its upper and lower surfaces; the aerogel body is arranged in the receiving cavity, and metal foils are attached to both the upper and lower surfaces of the aerogel body; the two plastic-sealed films are respectively attached to the two surfaces of the buffer frame and seal the receiving cavity.

[0007] As a preferred solution, the buffer frame is made of silicone rubber, and silicone rubber has excellent elasticity, which can provide better buffer performance for the buffer heat insulation pad.

[0008] As a preferred solution, the metal foil is aluminum foil.

[0009] As a preferred solution, the two plastic-sealed films are both PET films.

[0010] As a preferred solution, the two plastic sealing films are both formed on the two surfaces of the buffer frame by vacuum hot pressing.

[0011] As a preferred solution, a polyethylene film, a fiber woven layer, a metal coating layer and a flame retardant layer are sequentially sandwiched between the aerogel body and the metal foil. The polyethylene film, the fiber woven layer, the metal coating layer and the flame retardant layer are stacked together in sequence to provide more performance for the buffer and thermal insulation pad, making the buffer and thermal insulation pad suitable for a variety of usage environments.

[0012] As a preferred solution, the polyethylene film, fiber woven layer, metal coating layer and flame retardant layer are all fixed together by hot melt adhesive lamination. The hot melt adhesive lamination makes the polyethylene film, fiber woven layer, metal coating layer and flame retardant layer stacked more firmly and reliably.

[0013] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0014] By coating the upper and lower surfaces of the aerogel body with metal foil, which has excellent thermal conductivity, the buffer insulation pad can absorb the heat generated by the battery cell when it is working and transfer the heat to the outside in time, effectively preventing the battery cell from overheating, alleviating the aging rate of the battery cell, and improving the safety performance of the battery cell. In addition, the metal foil has better strength, which can protect the aerogel body and extend the service life of the buffer insulation pad.

[0015] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of an assembly perspective view of a preferred embodiment of the utility model;

[0017] Figure 2 It is an exploded view of a preferred embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional view of a preferred embodiment of the utility model;

[0019] Figure 4 It is a partially enlarged cross-sectional view of a preferred embodiment of the utility model.

[0020] Description of the accompanying drawings:

[0021] 10. Buffer frame 11. Accommodating cavity

[0022] 20. Aerogel body 30. Plastic film

[0023] 40. Metal foil. Detailed implementation mode

[0024] Please refer to Figures 1 to 4 As shown, it shows the specific structure of the preferred embodiment of the present utility model, including a buffer frame 10, an aerogel body 20 and two plastic sealing films 30.

[0025] The buffer frame 10 is provided with a receiving cavity 11 penetrating its upper and lower surfaces; in this embodiment, the buffer frame 10 is made of silicone rubber, and silicone rubber has excellent elasticity, which can provide more excellent buffering performance for the buffer heat insulation pad.

[0026] The aerogel body 20 is arranged in the receiving cavity 11, and metal foils 40 are attached to both the upper and lower surfaces of the aerogel body 20; in this embodiment, a polyethylene film (not shown in the figure), a fiber braided layer (not shown in the figure), a metal coating layer (not shown in the figure) and a flame retardant layer (not shown in the figure) are sequentially interposed between the aerogel body 20 and the metal foil 40. The sequential stacking of the polyethylene film, the fiber braided layer, the metal coating layer and the flame retardant layer together can provide more properties for the buffer heat insulation pad, making the buffer heat insulation pad suitable for various use environments; specifically, the polyethylene film, the fiber braided layer, the metal coating layer and the flame retardant layer are all fixed together by hot melt adhesive lamination. By the way of hot melt adhesive lamination, the polyethylene film, the fiber braided layer, the metal coating layer and the flame retardant layer are stacked more firmly and reliably; and, the metal foil 40 is an aluminum foil.

[0027] The two plastic sealing films 30 are respectively attached to the two surfaces of the buffer frame 10 and seal the receiving cavity 11; in this embodiment, the two plastic sealing films 30 are both PET films, and the two plastic sealing films 30 are both formed on the two surfaces of the buffer frame 10 by vacuum pumping and hot pressing.

[0028] The design focus of the present utility model is that by attaching metal foils to the upper and lower surfaces of the aerogel body, the metal foils have excellent heat conduction ability, so that the buffer heat insulation pad can absorb the heat generated during the operation of the battery cell and transfer the heat to the outside in time, effectively preventing the temperature of the battery cell from being too high, alleviating the aging rate of the battery cell, improving the safety performance of the battery cell, and cooperating with the better strength of the metal foil, which can protect the aerogel body and extend the service life of the buffer heat insulation pad.

[0029] The above is only the 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 embodiment according to the technical essence of the present utility model still belong to the scope of the technical solution of the present utility model.

Claims

1. A heat-absorbing buffer insulation pad, characterized in that: The invention comprises a buffer frame, an aerogel body and two plastic sealing films; the buffer frame is provided with a receiving cavity penetrating the upper and lower surfaces thereof; the aerogel body is arranged in the receiving cavity, and the upper and lower surfaces of the aerogel body are both covered with metal foil; the two plastic sealing films are respectively covered on the two surfaces of the buffer frame and seal the receiving cavity.

2. The heat-absorbing buffer insulation pad according to claim 1, characterized in that: The buffer frame is made of silicone rubber.

3. The heat-absorbing buffer insulation pad according to claim 1, characterized in that: The metal foil is aluminum foil.

4. The heat-absorbing buffer insulation pad according to claim 1, characterized in that: The two plastic sealing films are both PET films.

5. The heat-absorbing buffer insulation pad according to claim 1, characterized in that: The two plastic sealing films are both formed on the two surfaces of the buffer frame by vacuum hot pressing.

6. The heat-absorbing buffer insulation pad according to claim 1, characterized in that: A polyethylene film, a fiber woven layer, a metal coating layer and a flame retardant layer are sequentially sandwiched between the aerogel body and the metal foil.

7. The heat-absorbing buffer insulation pad according to claim 6, characterized in that: The polyethylene film, the fiber braided layer, the metal coating layer and the flame retardant layer are all laminated and fixed together by hot melt adhesive.

Images