Heat-insulating and shock-absorbing protective material for new energy automobile battery

Abstract

The utility model provides a heat-insulating and shock-absorbing protective material for a new energy automobile battery, which comprises a fixed layer, a protective layer is arranged below the fixed layer, the protective layer is divided into an upper layer and a lower layer, and a shock-absorbing and heat-insulating layer is arranged between the upper protective layer and the lower protective layer. By arranging the shock absorption and heat insulation layer and arranging the heat reflection coatings on the surface, facing the battery, of the shock absorption layer, heat radiation generated by the battery can be reflected, loss of heat generated when the battery works is avoided, heat radiation reflected between the two heat reflection coatings can be absorbed through the heat preservation layer, and the heat preservation effect is improved; meanwhile, the material thickness is reduced; the shock absorption layers are arranged to be in a wave shape, the two shock absorption layers are arranged to be perpendicular to each other, when impact is received, the shock is absorbed through deformation of the shock absorption layers, the shapes of the shock absorption layers are maintained through the maintaining layers, and the impact absorption capacity of the shock absorption layers can be improved.

Description

Technical Field

[0001] This application relates to the technical field of battery protection devices, especially the heat insulation and shock absorption protection material for new energy vehicle batteries. Background Art

[0002] At present, the country is vigorously developing new energy vehicles, and various models of different automobile enterprises are emerging in an endless stream. The market share of new energy vehicles is gradually increasing, but they still cannot replace the position of fuel vehicles at present. The main reason lies in the energy supply and driving form of new energy vehicles. New energy vehicles mainly rely on batteries to drive the motor to rotate, so as to drive the vehicle to run. When the temperature is relatively low in winter, the activity and energy density of the battery will decrease, which is manifested in the rapid decrease of the battery power and the reduction of the vehicle's cruising range during use. Under relatively extreme temperature conditions, the battery pack will trigger self-protection and will not charge or discharge at all. In addition, the battery is a relatively delicate component, and the vibration generated during the vehicle's driving will affect the service life of the battery.

[0003] In the prior art, usually a material with a relatively low thermal conductivity is used to cover the outside of the heat dissipation component of the battery pack, and heat insulation is increased at the module level and the box body level to avoid heat loss of the battery. At the same time, the heat insulation material has a certain shock absorption effect to protect the battery. Limited by size and space requirements, the thickness of the heat insulation material is limited, and it is impossible to achieve good balance between shock absorption and heat insulation. The shock absorption performance is insufficient, and it can only absorb the fine vibrations on smooth roads. For large vibrations and accidental impacts, the existing heat insulation and shock absorption materials cannot absorb and isolate them. Utility Model Content

[0004] In order to solve the problem of low shock absorption performance of the heat insulation and shock absorption material due to size limitation in the related art, this application provides a heat insulation and shock absorption protection material for new energy vehicle batteries, including:

[0005] A fixing layer, a protective layer is provided below the fixing layer, the protective layer is divided into upper and lower layers, and a shock absorption and heat insulation layer is provided between the upper and lower layers of the protective layer;

[0006] The fixing layer is used to connect the protective layer and the shock absorption and heat insulation layer to the battery pack;

[0007] The protective layer has waterproof performance and is used to protect the shock absorption and heat insulation layer;

[0008] The shock absorption and heat insulation layer includes two shock absorption layers, the shock absorption layers are connected by a heat insulation layer, and the shock absorption layer is connected to the protective layer.

[0009] Further, the fixing layer includes an adhesive layer, and the bottom surface of the adhesive layer is adhered to the protective layer.

[0010] Further, an isolation layer is provided on the top surface of the adhesive layer. The isolation layer is used to isolate the adhesive layer, and the isolation layer needs to be peeled off before the adhesive layer is bonded to the battery.

[0011] Further, the protective layer includes a waterproof layer, and the waterproof layer is made of waterproof coating.

[0012] Further, a holding layer is provided between the waterproof layer and the shock-absorbing layer.

[0013] Further, the holding layer is made of an elastic material and is used to maintain the shape of the shock-absorbing layer.

[0014] Further, the shock-absorbing layer is elastic and wavy.

[0015] Further, the wave directions of the two shock-absorbing layers are perpendicular to each other.

[0016] Further, a heat-reflective coating is provided on the surface of the shock-absorbing layer facing the adhesive layer, and the heat-reflective coating can reflect heat radiation.

[0017] Further, the heat-insulating layer is made of foaming material.

[0018] Compared with the prior art, the present utility model has the following beneficial effects:

[0019] By providing a shock-absorbing and heat-insulating layer, and by providing a heat-reflective coating on the surface of the shock-absorbing layer facing the battery, the heat radiation generated by the battery can be reflected, avoiding the loss of heat generated when the battery works. The heat-insulating layer can absorb the heat radiation reflected between the two heat-reflective coatings, improving the heat-insulating effect and reducing the material thickness at the same time. By setting the shock-absorbing layer to be wavy and arranging the two shock-absorbing layers perpendicular to each other, when receiving an impact, the deformation of the shock-absorbing layer is used to absorb the impact, and the holding layer is used to maintain the shape of the shock-absorbing layer, which can improve the impact absorption ability of the shock-absorbing layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure provided by an embodiment of the present application;

[0021] Figure 2 is a schematic diagram of the structure of the fixing layer provided by an embodiment of the present application;

[0022] Figure 3 is a schematic top view of the overall structure provided by an embodiment of the present application;

[0023] Figure 4 is an exploded schematic diagram of the overall structure provided by an embodiment of the present application.

[0024] Illustration:

[0025] 1. Fixing layer; 11. Adhesive layer; 12. Isolation layer;

[0026] 2. Protective layer; 21. Waterproof layer; 22. Retaining layer;

[0027] 3. Shock-absorbing and heat-insulating layer; 31. Shock-absorbing layer; 32. Heat-reflective coating; 33. Thermal insulation layer. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0029] In this article, terms such as "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0030] In addition, in this article, orientation terms such as "upper" and "lower" are defined relative to the orientation of the structural schematic placement in the accompanying drawings. It should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and they can change accordingly with the change of the orientation where the structure is placed.

[0031] Please refer to Figures 1 to 4 , an embodiment of the present application provides a heat-insulating and shock-absorbing protection material for new energy vehicle batteries, including:

[0032] Fixing layer 1, a protective layer 2 is provided below the fixing layer 1. The protective layer 2 is divided into upper and lower layers, and a shock-absorbing and heat-insulating layer 3 is provided between the upper and lower layers of the protective layer 2. The fixing layer 1 is used to connect the protective layer 2 and the shock-absorbing and heat-insulating layer 3 to the battery pack. The fixing layer 1 includes an adhesive layer 11, and the bottom surface of the adhesive layer 11 is bonded to the protective layer 2.

[0033] The adhesive layer 11 is made of PE foam glue. The adhesion of the adhesive layer 11 is used to achieve the bonding of the protective layer 2 and the battery pack.

[0034] An isolation layer 12 is provided on the top surface of the adhesive layer 11. The isolation layer 12 is used to isolate the adhesive layer 11. The isolation layer 12 needs to be peeled off before the adhesive layer 11 is bonded to the battery.

[0035] The isolation layer 12 is made of release paper. The isolation layer 12 can isolate the adhesive surface of the adhesive layer 11, avoiding the loss of adhesion of the adhesive surface of the adhesive layer 11 when not in use. The adhesive layer 11 and the isolation layer 12 can be easily separated during use.

[0036] The protective layer 2 has waterproof performance and is used to protect the shock-absorbing and heat-insulating layer 3. The protective layer 2 includes a waterproof layer 21, and the waterproof layer 21 uses waterproof paint.

[0037] The waterproof layer 21 can use extruded PLA material, which can be obtained by fermenting and then polymerizing bio-based materials. It has good gloss and waterproofness and can play a waterproof role.

[0038] A retaining layer 22 is provided between the waterproof layer 21 and the shock-absorbing layer 31. The retaining layer 22 uses an elastic material and is used to maintain the shape of the shock-absorbing layer 31.

[0039] The retaining layer 22 and the shock-absorbing layer 31 are bonded. The retaining layer 22 uses EPP foam, that is, foamed polypropylene foam, which has a light specific gravity and good elasticity at the same time. It has strong earthquake resistance, a high deformation recovery rate, is heat-resistant, waterproof and insulating.

[0040] The shock-absorbing and heat-insulating layer 3 includes two shock-absorbing layers 31. The shock-absorbing layers 31 are connected by a heat-insulating layer 33, and the shock-absorbing layer 31 is connected to the protective layer 2. The shock-absorbing layer 31 has elasticity and is wavy.

[0041] The shock-absorbing layer 31 is formed by stamping aluminum foil material. The aluminum foil material can reflect a part of the thermal radiation. After the shock-absorbing layer 31 and the retaining layer 22 are combined, because the shock-absorbing layer 31 is wavy, after receiving an impact, the shock-absorbing layer 31 and the retaining layer 22 can deform and absorb part of the impact at the same time, convert the energy of the impact into heat energy, and then the shock-absorbing layer 31 and the retaining layer 22 will return to their original shapes.

[0042] The wave directions of the two shock-absorbing layers 31 are perpendicular to each other.

[0043] The two shock-absorbing layers 31 being perpendicular to each other can evenly disperse the impact in all directions. Compared with the case where the waves of the shock-absorbing layer 31 are arranged in parallel, more impacts can be absorbed, and it is avoided that the shock-absorbing layer 31 cannot return to its original shape after deforming due to the impact.

[0044] A heat-reflecting coating 32 is provided on the surface of the shock-absorbing layer 31 facing the bonding layer 11, and the heat-reflecting coating 32 can reflect thermal radiation.

[0045] The heat-reflecting coating 32 uses a modified graphene coating, which uses graphene particles to reflect infrared thermal radiation and reduces the loss of thermal radiation generated during the operation of the battery.

[0046] The heat-insulating layer 33 uses foamed material.

[0047] The thermal insulation layer 33 is made of TPE foaming material and bonded to the shock absorption layer 31 through a heat-sensitive glue. The micropores inside the thermal insulation layer 33 are used to absorb the vibration transmission between the shock absorption layers 31. At the same time, the thermal radiation reflected between the thermal reflection coatings 32 is absorbed and converted into heat, further enhancing the thermal insulation ability for the battery.

[0048] This application has at least one of the following advantages:

[0049] (1) By applying the thermal reflection coating 32 on the side of the shock absorption layer 31 facing the battery pack, the thermal radiation generated during battery operation is reflected by the thermal reflection coating 32, reducing the loss of battery heat, and the overall thickness of the material is reduced by using the thermal reflection coating 32.

[0050] (2) By setting the thermal insulation layer 33, the micropores of the foaming material are used to absorb part of the vibration transmission and at the same time absorb the thermal reflection between the thermal reflection coatings 32, enhancing the thermal insulation ability.

[0051] (3) By setting the shock absorption layer 31 in a corrugated shape and using the retaining layer 22 to maintain the shape of the shock absorption layer 31, the shock absorption ability of the shock absorption layer 31 for impacts is enhanced. The two shock absorption layers 31 are vertically arranged to increase the upper limit of shock absorption.

[0052] The above has introduced in detail the heat insulation and shock absorption protection material for new energy vehicle batteries provided by the embodiments of this application, and specific embodiments are used to explain the principle and implementation manner of this application. The above description is only used to help understand the method and its core mechanism of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific embodiments and application scopes. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. Heat-insulating and shock-absorbing protective material for new energy vehicle batteries, characterized in that: include: A fixing layer (1), wherein a protective layer (2) is provided below the fixing layer (1), the protective layer (2) is divided into an upper and lower layer, and a shock-absorbing and heat-insulating layer (3) is provided between the upper and lower protective layers (2); The fixing layer (1) is used to connect the protective layer (2) and the shock-absorbing and heat-insulating layer (3) to the battery pack; The protective layer (2) has waterproof properties and is used to protect the shock-absorbing and heat-insulating layer (3); The shock-absorbing and heat-insulating layer (3) comprises two shock-absorbing layers (31), the shock-absorbing layers (31) are connected via a heat-insulating layer (33), and the shock-absorbing layer (31) is connected to the protective layer (2).

2. The heat-insulating and shock-absorbing protective material for new energy vehicle batteries according to claim 1, characterized in that: The fixing layer (1) comprises an adhesive layer (11), and the bottom surface of the adhesive layer (11) is bonded to the protective layer (2).

3. The heat-insulating and shock-absorbing protective material for new energy vehicle batteries according to claim 2, characterized in that: An isolation layer (12) is provided on the top surface of the adhesive layer (11), and the isolation layer (12) is used to isolate the adhesive layer (11). The isolation layer (12) needs to be peeled off before the adhesive layer (11) is bonded to the battery.

4. The heat-insulating and shock-absorbing protective material for new energy vehicle batteries according to claim 3, characterized in that: The protective layer (2) comprises a waterproof layer (21), and the waterproof layer (21) is made of waterproof coating.

5. The heat-insulating and shock-absorbing protective material for new energy vehicle batteries according to claim 4, characterized in that: A retaining layer (22) is provided between the waterproof layer (21) and the shock-absorbing layer (31).

6. The heat-insulating and shock-absorbing protective material for new energy vehicle batteries according to claim 5, characterized in that: The retaining layer (22) is made of elastic material and is used to retain the shape of the shock absorbing layer (31).

7. The heat-insulating and shock-absorbing protective material for new energy vehicle batteries according to claim 6, characterized in that: The shock-absorbing layer (31) is elastic and wavy.

8. The heat-insulating and shock-absorbing protective material for new energy vehicle batteries according to claim 7, characterized in that: The wave directions of the two shock-absorbing layers (31) are perpendicular to each other.

9. The heat-insulating and shock-absorbing protective material for new energy vehicle batteries according to claim 8, characterized in that: A heat reflective coating (32) is provided on one side of the shock absorbing layer (31) facing the adhesive layer (11), and the heat reflective coating (32) is capable of reflecting heat radiation.

10. The heat-insulating and shock-absorbing protective material for new energy vehicle batteries according to claim 9, characterized in that: The thermal insulation layer (33) is made of foaming material.

Images