Battery pack heat insulation foam with stress release holes

Abstract

The utility model discloses a kind of battery pack heat-insulating foam with stress release hole, it is related to battery foam technical field, including buffer mechanism, the upper and lower of the buffer mechanism is equipped with PET film for the protection of buffer mechanism, the side of the PET film far from buffer mechanism is provided with the sticking mechanism for sticking;The buffer mechanism includes the lower side of PET film and is pasted with flame-retardant polyurethane foam b by upper adhesive tape, flame-retardant polyurethane foam b is used to provide buffer space for battery deformation, the upper and lower of flame-retardant polyurethane foam b are all set with release slot for releasing stress.The utility model is by being set with release slot on flame-retardant polyurethane foam a and flame-retardant polyurethane foam b, when flame-retardant polyurethane foam a and flame-retardant polyurethane foam b are extruded, stress can be released, improve the buffering effect of the battery pack heat-insulating foam with stress release hole.

Description

Technical Field

[0001] This utility model relates to the field of battery foam technology, specifically a battery pack heat insulation foam with stress relief holes. Background Technology

[0002] Battery pack insulation foam is a special material used for insulation and protection inside battery packs. It is usually made of foam material and has excellent heat insulation, cushioning and shock absorption properties. It is mainly used in electric vehicles, battery energy storage systems and other high-power battery packs. It can effectively isolate external heat sources, maintain the battery's operating temperature, and improve the battery's performance and safety. However, existing battery pack insulation foams still have certain defects in use, such as: The patent with authorization announcement number CN210052765U describes a type of cushioning foam for power batteries. The described solution relies solely on the silicone foam layer itself to provide cushioning space, resulting in poor cushioning effect. Furthermore, the substrate lacks an adhesive structure with the battery, making it easy to detach from the battery.

[0003] Based on this, a battery pack insulation foam with stress relief holes is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0004] The purpose of this invention is to provide a battery pack insulation foam with stress relief holes to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A battery pack insulation foam with stress relief holes includes a cushioning mechanism. PET films for protecting the cushioning mechanism are provided above and below the cushioning mechanism. An adhesive mechanism for bonding is provided on the side of the PET film away from the cushioning mechanism. The buffer mechanism includes flame-retardant polyurethane foam b attached to the bottom of the PET film via adhesive tape. The flame-retardant polyurethane foam b is used to provide buffer space for battery deformation. The flame-retardant polyurethane foam b has stress release grooves on both the top and bottom.

[0006] Based on the above technical solutions, this utility model also provides the following optional technical solutions: In one alternative: flame-retardant polyurethane foam b is attached to the bottom with double-sided tape to provide buffer space for battery deformation, and stress relief grooves are also provided above and below the flame-retardant polyurethane foam a.

[0007] In one alternative: the adhesive mechanism includes double-sided self-adhesive tape adhered to the upper surface of a PET film, the self-adhesive tape being used to adhere the PET film to the battery or the inner wall of the battery compartment.

[0008] In one alternative: a release liner is attached to the side of the double-sided self-adhesive away from the PET film, the release liner being used to protect the double-sided self-adhesive during transportation.

[0009] In one alternative: a tear-off head is fixedly connected to one side of the release paper, which is used to provide force to the release paper and facilitate its removal.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model improves the buffering effect of the battery pack insulation foam with stress relief holes by opening release grooves on flame-retardant polyurethane foam a and flame-retardant polyurethane foam b, which releases stress when flame-retardant polyurethane foam a and flame-retardant polyurethane foam b are compressed.

[0011] 2. This utility model improves the protective effect of the battery pack heat insulation foam with stress relief holes and increases its service life by using flame-retardant polyurethane foam a, flame-retardant polyurethane foam b and PET film. 3. This utility model prevents the thermal insulation foam with stress relief holes from falling off the battery pack by setting double-sided self-adhesive on the outside of the PET film, thus preventing wear and tear on the battery pack and improving safety. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0014] Figure 3 This is a three-dimensional exploded structural diagram of the present invention.

[0015] Figure 4 This is a three-dimensional structural diagram of the flame-retardant polyurethane foam of this utility model.

[0016] Figure label annotations: 1. Buffer mechanism; 101. Flame-retardant polyurethane foam a; 102. Flame-retardant polyurethane foam b; 103. Release groove; 2. PET film; 3. Adhesive mechanism; 301. Double-sided self-adhesive; 302. Release paper; 303. Tear-off head. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] In one embodiment, such as Figures 1-3As shown, a battery pack insulation foam with stress relief holes includes a cushioning mechanism 1. PET films 2 for protecting the cushioning mechanism 1 are provided above and below the cushioning mechanism 1. An adhesive mechanism 3 for bonding is provided on the side of the PET film 2 away from the cushioning mechanism 1. The buffer mechanism 1 includes a flame-retardant polyurethane foam b102 attached to the bottom of the PET film 2 by an adhesive tape. The flame-retardant polyurethane foam b102 is used to provide a buffer space for battery deformation. The flame-retardant polyurethane foam b102 is provided with stress release grooves 103 on the top and bottom. In this embodiment, flame-retardant polyurethane foam a101 and flame-retardant polyurethane foam b102 are placed between two adjacent battery packs to separate the adjacent battery packs. Similarly, flame-retardant polyurethane foam a101 and flame-retardant polyurethane foam b102 are placed between the battery pack and the inner wall of the battery compartment to separate the battery pack and the inner wall of the battery compartment, and to buffer the battery pack to prevent friction and collision between battery packs and between the battery pack and the inner wall of the battery compartment. Flame-retardant polyurethane foam a101 and flame-retardant polyurethane foam b102 improve the insulation, corrosion resistance and high temperature resistance of the battery pack insulation foam with stress relief holes. PET film 2 has high mechanical strength and excellent toughness, which improves the wear resistance of the battery pack insulation foam with stress relief holes.

[0019] In one embodiment, such as Figures 1-4 As shown, flame-retardant polyurethane foam b102 is attached to the bottom with double-sided tape to provide a buffer space for battery deformation. Flame-retardant polyurethane foam a101 is also provided with stress release grooves 103 on the top and bottom of flame-retardant polyurethane foam a101. By utilizing the deformation properties of flame-retardant polyurethane foam a101 and flame-retardant polyurethane foam b102, the stress release space can be increased when the battery pack shakes or bulges. When flame-retardant polyurethane foam a101 and flame-retardant polyurethane foam b102 are compressed, the release groove 103 gradually becomes smaller, increasing the deformation capacity of flame-retardant polyurethane foam a101 and flame-retardant polyurethane foam b102 and improving the stress release effect of flame-retardant polyurethane foam a101 and flame-retardant polyurethane foam b102.

[0020] In one embodiment, such as Figures 1-3 As shown, the adhesive mechanism 3 includes a double-sided self-adhesive 301 adhered to the upper surface of the PET film 2. The double-sided self-adhesive 301 is used to adhere the PET film 2 to the battery or the inner wall of the battery compartment. When the battery pack insulation foam with stress relief holes is placed between two adjacent battery packs, or between the battery pack and the inner wall of the battery compartment, it can stick the battery packs together and prevent the battery pack insulation foam from loosening and falling off the battery pack when the battery compartment is subjected to vibration, which could cause the battery pack to collide and wear, leading to an accident.

[0021] In one embodiment, such as Figures 1-3 As shown, the side of the double-sided self-adhesive 301 away from the PET film 2 is covered with release paper 302, which is used to protect the double-sided self-adhesive 301 during transportation. The contact surfaces of the release paper 302 and the double-sided self-adhesive 301 are relatively smooth, which covers the double-sided self-adhesive 301 and prevents the battery pack insulation foam with stress relief holes from sticking to each other or to the outer packaging during transportation.

[0022] In one embodiment, such as Figures 1-3 As shown, a tear head 303 is fixedly connected to one side of the release paper 302. The tear head 303 is used to provide force to the release paper 302, making it easy to remove the release paper 302. The tear-off head 303 and the release paper 302 are cut and formed as one piece. The tear-off head 303 is not attached to the double-sided self-adhesive 301. When it is necessary to attach the heat insulation foam of the battery pack to the battery pack, pinch the tear-off head 303 with your hand to easily peel the release paper 302 off the double-sided self-adhesive 301.

[0023] The above embodiment discloses a battery pack insulation foam with stress relief holes. When battery pack protection is required, the battery pack insulation foam with stress relief holes is taken out, and then the tear-off head 303 is pinched and the release paper 302 is peeled off outward. The adhesive side of the double-sided self-adhesive 301 is pasted onto the battery. Then, another set of release paper 302 is peeled off and the adhesive side of the release paper 302 is pasted onto the inner wall of the battery compartment. The next set of battery pack insulation foam with stress relief holes is taken out and pasted onto the other side of the battery pack. Then, the next set of battery pack insulation foam is pasted onto the previous set of battery pack insulation foam.

[0024] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A battery pack insulation foam with stress relief holes, comprising a cushioning mechanism (1), characterized in that, The buffer mechanism (1) is provided with PET film (2) above and below for protecting the buffer mechanism (1), and the side of the PET film (2) away from the buffer mechanism (1) is provided with an adhesive mechanism (3) for adhesive. The buffer mechanism (1) includes a flame-retardant polyurethane foam b (102) attached to the bottom of a PET film (2) by an adhesive tape. The flame-retardant polyurethane foam b (102) is used to provide a buffer space for battery deformation. The flame-retardant polyurethane foam b (102) has release grooves (103) on the top and bottom for releasing stress.

2. The battery pack insulation foam with stress relief holes according to claim 1, characterized in that, Below the flame-retardant polyurethane foam b (102), a flame-retardant polyurethane foam a (101) for providing buffer space for battery deformation is attached by double-sided tape. The flame-retardant polyurethane foam a (101) also has stress release grooves (103) on the top and bottom.

3. The battery pack insulation foam with stress relief holes according to claim 1, characterized in that, The adhesive mechanism (3) includes a double-sided self-adhesive (301) adhered to the upper surface of the PET film (2), which is used to adhere the PET film (2) to the battery or the inner wall of the battery compartment.

4. The battery pack insulation foam with stress relief holes according to claim 3, characterized in that, The double-sided self-adhesive (301) has release paper (302) pasted on the side away from the PET film (2), and the release paper (302) is used to protect the double-sided self-adhesive (301) during transportation.

5. A battery pack insulation foam with stress relief holes according to claim 4, characterized in that, A tear head (303) is fixedly connected to one side of the release paper (302). The tear head (303) is used to provide force to the release paper (302) so that the release paper (302) can be easily removed.

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