Silica gel battery cell heat insulation sheet

Abstract

The utility model discloses a silica gel battery cell heat insulation sheet which comprises an aerogel base layer, flame-retardant protective layers are fixedly adhered to the top end and the bottom end of the aerogel base layer, a rubber cushion plate is arranged at the top of each flame-retardant protective layer, silica gel gaskets are fixedly adhered to the top end and the bottom end of each rubber cushion plate, and the silica gel gaskets are arranged on the aerogel base layer. And a packaging film layer is installed outside the rubber cushion plate, an adhesive positioning layer is fixedly connected to the outside of the packaging film layer, an anti-skid limiting piece is fixedly connected to the top end of the adhesive positioning layer, and a reinforcing protruding block is fixedly connected to the top end of the silica gel gasket. According to the silica gel battery cell heat insulation sheet, the damping effect and the positioning effect are improved through the rubber pad and the anti-skid stripes, once the heat insulation sheet is impacted, the rubber pad plate and the silica gel pad outside the aerogel base layer have a certain buffer protection function, and the rubber pad plate and the silica gel pad can improve the connection stability through the reinforcing convex blocks; by means of the structure, the function of conveniently enhancing buffering is achieved, and the problem that the buffering effect is poor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core heat insulation sheets, in particular to a silicone battery core heat insulation sheet. Background Art

[0002] The battery cell thermal insulation sheet is a thermal insulation material developed for new energy vehicle power batteries. It is suitable for the protection between battery cells in new energy vehicle power batteries and the direct protection and isolation between modules. The battery module usually includes multiple batteries, and the batteries are closely attached to each other. At the same time, the module frame surrounds the battery and provides a fixing device for the module. The batteries in the battery module are combined together by extrusion. Individual batteries are prone to serious safety accidents such as wear, overheating or fire. In particular, individual batteries overheat and affect adjacent batteries, causing adjacent batteries to overheat and run away, resulting in battery performance degradation and the occurrence of safety accidents. When a battery cell or module burns, it will not quickly affect the remaining battery cells or modules. In combination with the battery slot thermal insulation sheet, it is used in new energy power battery packs to play a fire prevention and heat insulation role when the battery burns or explodes, which can effectively prevent the spread of battery flames and buy more precious time for the escape of people on the vehicle.

[0003] After searching, according to an ultra-thin battery cell thermal insulation sheet disclosed in application number CN202223325120.8, the article mentioned that "it includes a glass fiber mesh cloth, a flame retardant material layer, a nanoporous silica aerogel, an external plastic film layer, and an adhesive layer. The glass fiber mesh cloth is wrapped in the flame retardant material layer, the nanoporous silica aerogel is located on the outer layer of the flame retardant material layer, and the external plastic film layer is adhered with an adhesive layer, which is attached to the nanoporous silica aerogel through the adhesive layer. The beneficial effects of the utility model are: it has a small thickness, comes with an external plastic film layer, can better protect its internal thermal insulation and flame retardant structural layer, and has excellent high-temperature thermal insulation performance and high-temperature compression resistance. "When the ultra-thin battery cell thermal insulation sheet in the above application is used, once the battery structure is hit, the battery cell thermal insulation sheet has poor shock absorption and buffering effect, and the thermal insulation sheet is prone to damage. The damaged thermal insulation sheet cannot perform the partition function, thereby affecting the overall thermal insulation effect.

[0004] There is an urgent need for a silicone battery core thermal insulation sheet to solve the technical defects raised in the above technology. Utility Model Content

[0005] The purpose of the utility model is to provide a silicone battery core heat insulation sheet to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a silicone battery core thermal insulation sheet, comprising an aerogel base layer, a flame retardant protective layer is fixedly bonded to the top and bottom of the aerogel base layer, a rubber pad is arranged on the top of the flame retardant protective layer, a silicone gasket is fixedly bonded to the top and bottom of the rubber pad, a packaging film layer is installed on the outside of the rubber pad, a viscose positioning layer is fixedly connected to the outside of the packaging film layer, a non-slip limiting sheet is fixedly connected to the top of the viscose positioning layer, a reinforcing bump is fixedly connected to the top of the silicone gasket, a limiting clamp is fixedly connected to the bottom of the silicone gasket, and reserved grooves are arranged inside the flame retardant protective layer and the packaging film layer.

[0007] Preferably, two groups of rubber pads are provided, and the rubber pads are installed at the top and bottom ends of the aerogel base layer.

[0008] Preferably, the reinforcement protrusions are distributed at equal intervals on the top of the silicone gasket, and the reinforcement protrusions are embedded in the reserved grooves.

[0009] Preferably, eight groups of the limiting clamp strips are provided, and the limiting clamp strips are clamped at both ends of the rubber pad.

[0010] Preferably, the surface of the anti-slip limiting plate is provided with anti-slip stripes.

[0011] Preferably, the anti-slip limiting plates are installed at the four corners of the adhesive positioning layer.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the silicone battery core heat insulation sheet not only realizes the function of enhancing shock absorption and preventing displacement, but also realizes the function of enhancing protection;

[0013] (1) By providing a rubber pad, a silicone gasket, a reserved groove and a reinforcement convex block, the rubber pad is installed on the outside of the aerogel base layer to have a buffering effect. During the installation process of the thermal insulation sheet, once the thermal insulation sheet is hit, the rubber pad and silicone gasket outside the aerogel base layer have a certain buffering and protective function. The rubber pad and the silicone gasket can improve the stability of the connection through the reinforcement convex block. This structure realizes the function of enhancing the buffering;

[0014] (2) By providing a viscose positioning layer, an anti-slip stopper and anti-slip stripes, when the heat insulation sheet is placed between the battery cells, the viscose positioning layer on the outside of the heat insulation sheet can be adhered to the surface of the battery cell for fixation, and the anti-slip stopper and anti-slip stripes on the viscose positioning layer can improve the stability of the fit, reduce the problem of the heat insulation sheet moving and deviating between the battery cells, and improve the stability of the heat insulation partition. This structure realizes the function of enhancing the positioning effect and preventing deviation;

[0015] (3) By providing an aerogel base layer, a rubber pad, a packaging film layer and a flame retardant protective layer, the aerogel base layer can be installed between battery cells to isolate the battery cells. Once a battery cell has a high-temperature thermal runaway, the aerogel base layer can block its heat from being transferred to adjacent cells to prevent heat diffusion. The two sets of flame retardant protective layers installed outside the aerogel base layer can improve the heat insulation and isolation effects. This structure realizes the function of enhancing protection and reducing the probability of heat diffusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0018] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 4 This is a schematic diagram of the partial structure of the rubber pad of the utility model from the front view.

[0020] In the figure: 1. Aerogel base layer; 2. Rubber pad; 3. Packaging film layer; 4. Adhesive positioning layer; 5. Anti-slip limiter; 6. Silicone gasket; 7. Flame retardant protective layer; 8. Reserved groove; 9. Anti-slip stripes; 10. Limiting clip; 11. Reinforcement bump. DETAILED DESCRIPTION

[0021] 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.

[0022] Example 1: Please refer to Figure 1-4 A silicone battery core heat insulation sheet comprises an aerogel base layer 1, a flame retardant protective layer 7 is fixedly bonded to the top and bottom of the aerogel base layer 1, a rubber pad 2 is arranged on the top of the flame retardant protective layer 7, a silicone pad 6 is fixedly bonded to the top and bottom of the rubber pad 2, a packaging film layer 3 is installed on the outside of the rubber pad 2, a viscose positioning layer 4 is fixedly connected to the outside of the packaging film layer 3, a non-slip limit sheet 5 is fixedly connected to the top of the viscose positioning layer 4, a reinforcing protrusion 11 is fixedly connected to the top of the silicone pad 6, and a limit clamp 10 is fixedly connected to the bottom of the silicone pad 6;

[0023] Two groups of rubber pads 2 are provided, and the rubber pads 2 are installed at the top and bottom of the aerogel base layer 1. The reinforcing protrusions 11 are evenly spaced at the top of the silicone gasket 6, and the reinforcing protrusions 11 are embedded in the reserved grooves 8. Eight groups of limiting clamps 10 are provided, and the limiting clamps 10 are clamped at both ends of the rubber pads 2.

[0024] Specifically, Figure 1 , Figure 3 and Figure 4 As shown, once the thermal insulation sheet is impacted, the rubber pad 2 and the silicone gasket 6 outside the aerogel base layer 1 have a certain buffering and protective function. The rubber pad 2 and the silicone gasket 6 can improve the stability of the connection through the reinforcement protrusion 11, thereby improving the buffering effect.

[0025] Embodiment 2: The surface of the anti-skid limiting piece 5 is provided with anti-skid stripes 9, and the anti-skid limiting piece 5 is installed at the four corners of the adhesive positioning layer 4;

[0026] Specifically, Figure 1 and Figure 2 As shown, the adhesive positioning layer 4 on the outside of the thermal insulation sheet can be adhered to the surface of the battery cell for fixation, and the anti-slip limiter 5 and anti-slip stripes 9 on the adhesive positioning layer 4 can improve the stability of the fit, reduce the problem of the thermal insulation sheet moving and shifting between the battery cells, and improve the stability of the thermal insulation partition.

[0027] Embodiment 3: A reserved groove 8 is provided inside the flame retardant protective layer 7 and the packaging film layer 3;

[0028] Specifically, Figure 1 As shown, once the battery cell experiences high-temperature thermal runaway, the aerogel base layer 1 can block the heat from being transferred to adjacent battery cells to prevent heat diffusion. The two groups of flame-retardant protective layers 7 installed outside the aerogel base layer 1 can improve the heat insulation and partition effects. This structure realizes the function of enhanced protection.

[0029] Working principle: When using the utility model, the heat insulation sheet needs to be installed between the battery cells first. The heat insulation sheet is mainly used for thermal protection between the power lithium battery cells, which can prevent thermal runaway of the battery cells and greatly improve the ride of new energy vehicles. When one of the battery cells has thermal runaway, the aerogel base layer 1 between the battery cells can block its heat from being transferred to the adjacent battery cells to prevent heat diffusion. The two groups of flame retardant protective layers 7 installed outside the aerogel base layer 1 can improve the effect of heat insulation and isolation. This structure realizes the function of enhanced protection. The adhesive positioning layer 4 outside the heat insulation sheet can be pasted on the battery cell. The surface is fixed, the anti-skid limit piece 5 and the anti-skid stripe 9 on the adhesive positioning layer 4 can improve the stability of the fit and reduce the problem of the insulation sheet moving and deviating between the battery cells. The rubber pad 2 is installed on the outside of the aerogel base layer 1 to have a buffering effect. During the installation process of the insulation sheet, once the insulation sheet is hit, the rubber pad 2 and the silicone gasket 6 outside the aerogel base layer 1 have a certain buffering and protective function. The rubber pad 2 and the silicone gasket 6 can improve the stability of the connection by reinforcing the protrusion 11. This structure realizes the function of facilitating enhanced buffering.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A silicone battery core thermal insulation sheet, comprising an aerogel base layer (1), characterized in that: The top and bottom ends of the aerogel base layer (1) are fixedly bonded with a flame retardant protective layer (7), a rubber pad (2) is arranged on the top of the flame retardant protective layer (7), the top and bottom ends of the rubber pad (2) are fixedly bonded with a silicone gasket (6), a packaging film layer (3) is installed on the outside of the rubber pad (2), the outside of the packaging film layer (3) is fixedly connected with an adhesive positioning layer (4), the top end of the adhesive positioning layer (4) is fixedly connected with an anti-slip limit plate (5), the top end of the silicone gasket (6) is fixedly connected with a reinforcing protrusion (11), the bottom end of the silicone gasket (6) is fixedly connected with a limit clamp (10), and the insides of the flame retardant protective layer (7) and the packaging film layer (3) are both provided with reserved grooves (8).

2. A silicone battery core thermal insulation sheet according to claim 1, characterized in that: Two groups of the rubber pads (2) are provided, and the rubber pads (2) are installed at the top and bottom ends of the aerogel base layer (1).

3. The silicone battery core thermal insulation sheet according to claim 1, characterized in that: The reinforcing protrusions (11) are distributed at equal intervals on the top of the silicone gasket (6), and the reinforcing protrusions (11) are embedded in the reserved groove (8).

4. The silicone battery core thermal insulation sheet according to claim 1, characterized in that: Eight groups of the limiting clamp strips (10) are provided, and the limiting clamp strips (10) are clamped at both ends of the rubber pad (2).

5. The silicone battery core thermal insulation sheet according to claim 1, characterized in that: The surface of the anti-slip limiting plate (5) is provided with anti-slip stripes (9).

6. The silicone battery core thermal insulation sheet according to claim 1, characterized in that: The anti-slip limiting plates (5) are installed at the four corners of the adhesive positioning layer (4).

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