Foldable heat insulation pad

Abstract

The utility model discloses a foldable heat insulation pad which comprises a first packaging film, six heat insulation pad bodies and a second packaging film. The first packaging film is in a cross shape, the first packaging film is provided with six heat insulation areas, and the six heat insulation areas are arranged on the first packaging film at intervals and are in a cross shape corresponding to the first packaging film; the six heat insulation pad bodies are arranged in the six heat insulation areas respectively, and a folding groove is formed between every two adjacent heat insulation pad bodies. The second packaging film corresponds to the first packaging film and is in a cross shape, and the second packaging film is attached to the heat insulation pad body. The first packaging film is designed to be in a cross shape, the six heat insulation pad bodies are arranged in the six heat insulation areas in a matched mode, and the folding grooves are formed between every two adjacent heat insulation pad bodies, so that the heat insulation pad can be folded for use, heat insulation can be continuously conducted on the six faces of the battery module at the same time, heat insulation protection can be conducted on the battery module in an all-around mode, and the service life of the battery module is prolonged. And spontaneous combustion of the battery caused by overheating of the battery cell module is comprehensively prevented.

Description

Technical Field

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

[0002] 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. When we touch it with our hands, we can feel the temperature, which 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, the internal air will expand violently, causing the battery to bulge outwards. 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 between them, an insulation pad is usually interposed between two battery cells.

[0003] Existing heat insulation pads are all non-foldable encapsulation structures. Each heat insulation pad can only provide heat insulation for one side of the battery module. If the heat insulation pad is forcibly folded, although it can provide heat insulation for multiple sides of the battery module at the same time, it will cause the service life of the heat insulation pad to be greatly shortened. Moreover, the folded part cannot completely fit the side of the battery module and cannot provide sufficient heat insulation function for the side of the battery module. Therefore, it is necessary to improve the existing heat insulation pads. Summary of the Utility Model

[0004] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present utility model is to provide a foldable heat insulation pad, which can effectively solve the problem that the existing heat insulation pad cannot be folded for use.

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

[0006] A foldable heat insulation pad includes a first encapsulation film, six heat insulation pad bodies, and a second encapsulation film; the first encapsulation film is in a "cross" shape, and there are six heat insulation areas on the first encapsulation film. The six heat insulation areas are arranged at intervals on the first encapsulation film and are in a "cross" shape corresponding to the first encapsulation film; the six heat insulation pad bodies are respectively arranged in the above six heat insulation areas, and a folding groove is formed between adjacent two heat insulation pad bodies; the second encapsulation film corresponds to the first encapsulation film and is in a "cross" shape, and the second encapsulation film is attached to the six heat insulation pad bodies.

[0007] As a preferred solution, it further includes mica sheets. The mica sheets are attached to the second encapsulation film and are directly above the corresponding heat insulation areas. When the heat insulation pad is folded in place, the mica sheets are directly above the upper end face of the battery module. The mica sheets provide a fire prevention function for the heat insulation pad, preventing the battery module protected by the heat insulation pad from catching fire due to the combustion of the battery module above.

[0008] As a preferred solution, the mica sheet is adhered to the second packaging film via an adhesive layer.

[0009] As a preferred solution, the six thermal insulation pad bodies are all made of aerogel material.

[0010] As a preferred solution, the first packaging film and the second packaging film are both PET films.

[0011] 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:

[0012] By designing the first packaging film into a "cross" shape, and then arranging six insulation pad bodies in the aforementioned six insulation areas respectively, a folding groove is formed between two adjacent insulation pad bodies, so that the insulation pad can be folded for use, and can continue to insulate the six sides of the battery module at the same time, providing all-round insulation protection for the battery module, and completely preventing the battery cell module from overheating and causing battery spontaneous combustion.

[0013] 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

[0014] Figure 1 It is a schematic diagram of an assembly perspective view of a preferred embodiment of the utility model;

[0015] Figure 2 It is an exploded view of a preferred embodiment of the utility model;

[0016] Figure 3 It is a partial exploded view of a preferred embodiment of the utility model.

[0017] Description of the accompanying drawings:

[0018] 10. First packaging film 101, thermal insulation area

[0019] 20. Insulation pad body 201. Folding groove

[0020] 30. Second packaging film 40. Mica sheet

[0021] 50. Adhesive layer DETAILED DESCRIPTION

[0022] Please refer to Figures 1 to 3 As shown, it shows the specific structure of a preferred embodiment of the utility model, including a first packaging film 10, six thermal insulation pad bodies 20 and a second packaging film 30.

[0023] The first encapsulation film 10 is in a cross shape, and there are six heat insulation areas 101 on the first encapsulation film 10. The six heat insulation areas 101 are arranged at intervals on the first encapsulation film 10 and are in a cross shape corresponding to the first encapsulation film 10; in this embodiment, the first encapsulation film 10 is a PET film.

[0024] The six heat insulation pad bodies 20 are respectively arranged in the above-mentioned six heat insulation areas 101, and a folding groove 201 is formed between adjacent two heat insulation pad bodies 20; in this embodiment, the six heat insulation pad bodies 20 are all made of aerogel material.

[0025] The second encapsulation film 30 corresponds to the first encapsulation film 10 and is in a cross shape. The second encapsulation film 30 is attached to the six heat insulation pad bodies 20; in this embodiment, the second encapsulation film 30 is a PET film.

[0026] It further includes a mica sheet 40. The mica sheet 40 is attached to the second encapsulation film 30 and is located directly above the corresponding heat insulation area 101. When the heat insulation pad is folded in place, the mica sheet 40 is located directly above the upper end face of the battery module. The mica sheet 40 provides a fire prevention function for the heat insulation pad, preventing the battery module protected by the heat insulation pad from burning due to the combustion of the upper battery module. Specifically, the mica sheet 40 is attached to the second encapsulation film 30 through an adhesive layer 50.

[0027] The design focus of the present utility model lies in: by designing the first encapsulation film into a cross shape, and then cooperating with the six heat insulation pad bodies respectively arranged in the above-mentioned six heat insulation areas, a folding groove is formed between adjacent two heat insulation pad bodies, so that the heat insulation pad can be folded for use, and can simultaneously continue to insulate the six surfaces of the battery module, providing all-round heat insulation protection for the battery module and comprehensively preventing the battery from spontaneous combustion caused by overheating of the battery cell module.

[0028] 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 modifications, equivalent changes and modifications made to the above embodiments based on 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 foldable thermal insulation pad, characterized in that: It includes a first packaging film, six thermal insulation pad bodies and a second packaging film; the first packaging film is in a "cross" shape, and has six thermal insulation areas. The six thermal insulation areas are arranged at intervals on the first packaging film and are in a "cross" shape corresponding to the first packaging film; the six thermal insulation pad bodies are respectively arranged in the above-mentioned six thermal insulation areas, and a folding groove is formed between two adjacent thermal insulation pad bodies; the second packaging film corresponds to the first packaging film and is in a "cross" shape, and the second packaging film is attached to the six thermal insulation pad bodies.

2. The foldable thermal insulation pad according to claim 1, characterized in that: It further includes a mica sheet, which is attached to the second packaging film and located directly above the corresponding thermal insulation area. When the thermal insulation pad is folded into place, the mica sheet is located directly above the upper end surface of the battery module.

3. The foldable thermal insulation pad according to claim 2, characterized in that: The mica sheet is adhered to the second packaging film via an adhesive layer.

4. The foldable thermal insulation pad according to claim 1, characterized in that: The six thermal insulation pad bodies are all made of aerogel material.

5. The foldable thermal insulation pad according to claim 1, characterized in that: The first packaging film and the second packaging film are both PET films.

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