Damping protection film, battery pack protection plate, battery pack and electric equipment

Abstract

The utility model relates to a damping structure, and discloses a damping protective film, a battery pack guard plate, a battery pack and electric equipment, the damping protective film comprises a protective film main body, the protective film main body comprises a first protective film and a second protective film, the first protective film and the second protective film are connected up and down to form a plurality of closed areas, the closed area is filled with damping filler. The shock absorption protective film is fast in shock resistance response.

Description

Technical Field

[0001] The utility model relates to a shock absorbing structure, in particular to a shock absorbing protective film, and also to a battery pack protective plate, a battery pack and an electrical device. Background Art

[0002] Figure 1 and Figure 2 A protective film with a high-pressure resistance function is provided, comprising a base film 1a, a middle-layer film sheet 2a is bonded to the upper end surface of the base film 1a, a middle-layer cavity 3a is arranged between the middle-layer film sheets 2a, an upper-layer film sheet 4a is bonded to the upper end surface of the middle-layer film sheet 2a, an upper-layer cavity 5a is arranged between the upper-layer film sheets 4a, the left and right ends of the upper-layer film sheet 4a are respectively bonded to two adjacent middle-layer film sheets 2a, a foam layer 6a is bonded to the upper end surface of the upper-layer film sheet 4, a release film 7a is bonded to the upper end surface of the foam layer 6a, a material tail 8a is bonded to the left end surface of the release film 7a, and a material head 9a is bonded to the right end surface of the release film 7a.

[0003] The protective film uses a foam layer to cushion the primary impact force, and then uses the principle that the starch liquid filled in the middle and upper cavities will turn into a non-Newtonian fluid at the moment of impact to further cushion the impact force, thereby solving the problem of damage to objects caused by instantaneous strong pressure.

[0004] However, the middle cavity 3a and the upper cavity 5a of the above-mentioned protective membrane structure are located inside the membrane, and thus cannot respond to collisions in a timely manner and have a slow anti-impact response. Utility Model Content

[0005] The purpose of the utility model is to provide a shock-absorbing protective film, which has a fast impact resistance response. The second purpose of the utility model is to provide a battery pack protective plate, the third purpose of the utility model is to provide a battery pack, and the fourth purpose of the utility model is to provide an electrical device.

[0006] In order to achieve the above-mentioned purpose, the first aspect of the utility model provides a shock-absorbing protective film, including a protective film body, the protective film body including a first protective film and a second protective film, the first protective film and the second protective film are connected up and down to form a plurality of closed areas, and the closed areas are filled with shock-absorbing fillers.

[0007] In some embodiments, the enclosed area is a cylinder, a sphere, a hemisphere, an ellipsoid, an ellipsoid, or a semi-ellipsoid.

[0008] In some embodiments, the enclosed areas are arranged in multiple rows, and the enclosed areas in adjacent rows are aligned one by one.

[0009] In some embodiments, the enclosed areas are arranged in multiple rows, and the enclosed areas in adjacent rows are staggered.

[0010] In some embodiments, the protective film body is a tough waterproof protective film, an elastic waterproof protective film or a multi-layer composite protective film.

[0011] In some embodiments, the shock absorbing filler is a non-Newtonian fluid filler.

[0012] In some embodiments, the shock-absorbing filler includes a non-Newtonian fluid filler and a gas, and the volume of the gas is less than or equal to the volume of the non-Newtonian fluid filler.

[0013] A second aspect of the utility model provides a battery pack protective plate, comprising a first protective plate, a second protective plate and the above-mentioned shock-absorbing protective film, wherein at least one layer of the shock-absorbing protective film is arranged between the first protective plate and the second protective plate.

[0014] In some embodiments, gaps are formed between adjacent closed areas.

[0015] In some embodiments, the voids are filled with impact-resistant fillers, thermally conductive fillers, or heat-absorbing fillers.

[0016] In some embodiments, the closed areas of adjacent layers of the shock-absorbing protective films are arranged in a staggered manner.

[0017] A third aspect of the present invention provides a battery pack provided with the above-mentioned battery pack protective plate.

[0018] A fourth aspect of the present invention provides an electrical device provided with the above-mentioned battery pack.

[0019] Through the above technical solution, the utility model connects the first protective film and the second protective film up and down to form a plurality of closed areas, and fills the closed areas with shock-absorbing fillers. Compared with the prior art, it can directly face the collision response and has a faster impact resistance response.

[0020] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1It is a schematic diagram of the structure of a protective film with a high pressure resistance function in the prior art;

[0023] Figure 2 yes Figure 1 A partial enlarged view of part A in FIG.

[0024] Figure 3 This is one of the structural schematic diagrams of the shock-absorbing protective film in the first specific embodiment of the utility model;

[0025] Figure 4 This is the second structural schematic diagram of the shock-absorbing protective film in the first specific embodiment of the utility model;

[0026] Figure 5 It is a structural schematic diagram of a battery pack guard plate in a first specific embodiment of the utility model;

[0027] Figure 6 It is a schematic diagram of the structure of a battery pack in the first specific embodiment of the utility model;

[0028] Figure 7 This is one of the structural schematic diagrams of the shock-absorbing protective film in the second specific embodiment of the utility model;

[0029] Figure 8 This is the second structural schematic diagram of the shock-absorbing protective film in the second specific embodiment of the utility model;

[0030] Fig. 9 It is a structural schematic diagram of a battery pack guard plate in a second specific embodiment of the utility model;

[0031] Fig.10 is a schematic structural diagram of a battery pack in a second specific embodiment of the utility model;

[0032] Fig.11 This is one of the structural schematic diagrams of the shock-absorbing protective film in the third specific embodiment of the utility model;

[0033] Fig.12 This is the second structural schematic diagram of the shock-absorbing protective film in the third specific embodiment of the utility model;

[0034] Fig.13 It is a structural schematic diagram of a battery pack guard plate in a third specific embodiment of the utility model;

[0035] Fig.14 is a schematic structural diagram of a battery pack in a third specific embodiment of the utility model;

[0036] Fig.15 It is a schematic structural diagram of a shock-absorbing protective film in a fourth specific embodiment of the utility model.

[0037] Description of Reference Numerals

[0038] 1Protective film body 2First protective film

[0039] 3 Second protective film 4 Closed area

[0040] 5First guard plate 6Second guard plate

[0041] 7 slots 8 battery pack DETAILED DESCRIPTION

[0042] The following is a further detailed description of the implementation of the utility model in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the utility model, but cannot be used to limit the scope of the utility model. The utility model can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0043] The utility model provides these embodiments to make the utility model thorough and complete, and to fully express the scope of the utility model to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​described in these embodiments should be interpreted as merely exemplary, rather than as limiting.

[0044] It should be noted that, in the description of the present invention, unless otherwise specified, the orientation or positional relationship indicated is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0045] In addition, the words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0046] It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0047] All terms used in the present invention have the same meanings as those understood by ordinary technicians in the field to which the present invention belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0048] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0049] like Figures 3 to 15 As shown, an embodiment of the utility model provides a shock-absorbing protective film, including a protective film body 1, the protective film body 1 includes a first protective film 2 and a second protective film 3, the first protective film 2 and the second protective film 3 are connected up and down to form a plurality of closed areas 4, and the closed areas 4 are filled with shock-absorbing fillers.

[0050] Based on the above technical solution, the first protective film 2 and the second protective film 3 are bonded up and down to form a plurality of closed areas 4, such as Figures 3 to 5 , Figures 7 to 9 , Figures 11 to 13 and Fig.15 As shown, the dot array in the figure indicates that the closed area 4 is filled with shock-absorbing filler. Compared with the prior art, the utility model protrudes the closed area 4 from the protective film body 1 structure, which can directly face the collision response and has a faster anti-impact response.

[0051] In some embodiments, the shock-absorbing filler can be a non-Newtonian fluid filler, such as a non-Newtonian fluid such as a concentrated solution and suspension of a high molecular polymer, and further, such as polyethylene, polyacrylamide, polyvinyl chloride, nylon 6 (polyamide 6), PVS (polyvinyl chloride), celluloid, polyester, rubber solution, various engineering plastics, melts and solutions of chemical fibers, etc. Non-Newtonian fluid refers to a fluid that does not satisfy Newton's experimental law of viscosity, that is, a fluid whose shear stress and shear strain rate are not in a linear relationship. The viscosity of this type of non-Newtonian fluid material system has an exponential growth beyond linearity with the increase of shear force, and has strong impact resistance. While ensuring a certain impact resistance, the shock-absorbing ability of the liquid is exerted.

[0052] In some embodiments, the closed area 4 may be completely filled with non-Newtonian fluid material; or, it may be partially filled with non-Newtonian fluid material and filled with gas at the same time, and the volume of the gas is less than or equal to the volume of the non-Newtonian fluid filler, that is, the volume of the gas portion should be ≤50%.

[0053] When designing the closed area 4, it is necessary to consider the effect of the size of the closed area 4 on the extension strength of the protective film. For example, when designing the height size of the closed area 4, the effect on the extension strength of the protective film should be considered at the same time so that the force can be dispersed when impacted and it is not easy to break.

[0054] In some embodiments, Figure 4 , Figure 8 and Fig.12 As shown, each closed area 4 can be arranged in multiple rows in a row-column arrangement, and in each closed area 4 in adjacent rows, adjacent closed areas 4 are aligned one by one, or, in each closed area 4 in adjacent rows, adjacent closed areas 4 are staggered.

[0055] In some embodiments, Figure 3 and Figure 4 As shown, the first protective film 2 and the second protective film 3 are bonded up and down to form a closed area 4. The closed area 4 can be as follows: Figure 3 The cylinder shown in the figure has an anti-impact and shock-absorbing material filled in the closed area 4, such as a non-Newtonian fluid material. The closed area 4 adopts a cylindrical structure, and its upper and lower surfaces are flat, with a large force-bearing area, which can reduce the pressure when impacted. The edge contours of the upper and lower surfaces are circular, which can disperse the force when impacted and is not easy to break.

[0056] like Figure 5As shown, the shock-absorbing protective film of the utility model can be added to the interlayer of the protective plate and used as a battery pack protective plate. Specifically, it includes a first protective plate 5, a second protective plate 6 and a shock-absorbing protective film. At least one layer of shock-absorbing protective film is arranged between the first protective plate 5 and the second protective plate 6. The first protective plate 5 and the second protective plate 6 wrap the shock-absorbing protective film to further enhance the impact resistance and shock absorption capabilities of the first protective plate 5 and the second protective plate 6. In the structure formed by the first protective plate 5, the shock-absorbing protective film and the second protective plate 6, there is a gap 7 between adjacent closed areas 4, wherein the closed area 4 can be a cylinder. The gap 7 can be left empty as a deformation buffer space for the protective film body 1 of the shock-absorbing protective film; the gap 7 can also be filled with foam to further dissipate force and reduce shock; the gap 7 can also be filled with heat-conducting materials to give the protective plate a cooling function, such as graphene, thermal grease, and thermal silica gel; the gap 7 can also be filled with heat-absorbing materials to give the protective plate a heat-insulating function, such as rock wool, glass wool, and expanded polystyrene foam.

[0057] In some embodiments, Figure 7 and Figure 8 As shown, the first protective film 2 and the second protective film 3 are bonded up and down to form a closed area 4. The closed area 4 can be as follows: Figure 7 The sphere shown has a closed area 4 filled with impact-resistant and shock-absorbing materials, such as non-Newtonian fluid materials. The closed area 4 adopts a spherical structure, which is subjected to uniform forces in all directions. When impacted, the force can be dispersed and it is not easy to break.

[0058] Similarly, if Fig. 9 As shown, the shock-absorbing protective film of the utility model can be added to the interlayer of the protective plate to be used as a battery pack protective plate. Specifically, it includes a first protective plate 5, a second protective plate 6 and a shock-absorbing protective film. At least one layer of shock-absorbing protective film is arranged between the first protective plate 5 and the second protective plate 6. The first protective plate 5 and the second protective plate 6 wrap the shock-absorbing protective film to further enhance the impact resistance and shock absorption capabilities of the first protective plate 5 and the second protective plate 6. In the structure formed by the first protective plate 5, the shock-absorbing protective film and the second protective plate 6, there is a gap 7 between adjacent closed areas 4, wherein the closed area 4 can be a sphere. The gap 7 can be left empty as a deformation buffer space for the protective film body 1 of the shock-absorbing protective film; the gap 7 can also be filled with foam to further dissipate force and shock; the gap 7 can also be filled with heat-conducting materials to give the protective plate a cooling function, such as graphene, thermal grease, and thermal silica gel; the gap 7 can also be filled with heat-absorbing materials to give the protective plate a heat-insulating function, such as rock wool, glass wool, and expanded polystyrene foam.

[0059] In some embodiments, Fig.11 and Fig.12 As shown, the first protective film 2 and the second protective film 3 are bonded up and down to form a closed area 4. The closed area 4 can be as follows: Fig.11The hemisphere shown in the figure has an anti-impact and shock-absorbing material filled in the closed area 4, such as a non-Newtonian fluid material. The closed area 4 adopts a spherical structure, and the first protective film 2 is a plane. Usually, the first protective film 2 is close to the force-bearing surface, and its force-bearing area is large and its edge is round. It reduces the pressure while dispersing the force, further enhancing the stability of the structure and making it difficult to break. The second protective film 3 is in the shape of a hemisphere at the closed area 4, and its force is uniform in all directions. When impacted, it can disperse the force and is not easy to break.

[0060] Similarly, if Fig.13 As shown, the shock-absorbing protective film of the utility model can be added to the interlayer of the protective plate to be used as a battery pack protective plate. Specifically, it includes a first protective plate 5, a second protective plate 6 and a shock-absorbing protective film. At least one layer of shock-absorbing protective film is arranged between the first protective plate 5 and the second protective plate 6. The first protective plate 5 and the second protective plate 6 wrap the shock-absorbing protective film to further enhance the impact resistance and shock absorption capabilities of the first protective plate 5 and the second protective plate 6. In the structure formed by the first protective plate 5, the shock-absorbing protective film and the second protective plate 6, there is a gap 7 between adjacent closed areas 4, wherein the closed area 4 can be a hemisphere. The gap 7 can be left empty as a deformation buffer space for the protective film body 1 of the shock-absorbing protective film; the gap 7 can also be filled with foam to further dissipate force and shock; the gap 7 can also be filled with heat-conducting materials to give the protective plate a cooling function, such as graphene, thermal grease, and thermal silica gel; the gap 7 can also be filled with heat-absorbing materials to give the protective plate a heat-insulating function, such as rock wool, glass wool, and expanded polystyrene foam.

[0061] like Figure 5 and Fig. 9 As shown, a single-layer shock-absorbing protective film can be arranged between the first protective plate 5 and the second protective plate 6, and can be rolled and placed in a pipe or other cavity. Fig.13 As shown, two layers of shock-absorbing protective film can be arranged between the first guard plate 5 and the second guard plate 6 to further enhance the shock-absorbing and impact-resistant effect. Alternatively, three or more layers of shock-absorbing protective film can be arranged between the first guard plate 5 and the second guard plate 6. Fig.13 As shown, adjacent closed areas 4 of adjacent layers of shock-absorbing protective films may be arranged in a staggered manner.

[0062] The shape of the closed area 4 is not limited to the above-mentioned cylinder, sphere, and hemisphere. The shape of the closed area 4 can also adopt other shapes that can achieve shock absorption and impact resistance effects, such as Fig.15 As shown, the shape of the upper surface of the closed area 4 is elliptical, and the closed area 4 can be formed into an ellipsoid, an ellipsoid or a semi-ellipsoid.

[0063] In some embodiments, the protective film body 1 may be a tough waterproof protective film, such as a polyethylene polypropylene composite waterproof material, made into a first protective film 2 and a second protective film 3, and the first protective film 2 and the second protective film 3 are connected up and down by bonding or welding to form the protective film body 1; the protective film body 1 may also be an elastic waterproof protective film, such as a polyurethane waterproof material, a butyl waterproof material or other elastic waterproof material, made into a first protective film 2 and a second protective film 3, and the first protective film 2 and the second protective film 3 are connected up and down by bonding or welding to form the protective film body 1; the protective film body 1 may also be a multi-layer composite protective film, such as a multi-layer composite material formed by polyvinyl chloride, polyethylene, polytetrafluoroethylene, polyvinylidene fluoride, etc., made into a first protective film 2 and a second protective film 3, and the first protective film 2 and the second protective film 3 are connected up and down by bonding or welding to form the protective film body 1. Among them, the materials used for the first protective film 2 and the second protective film 3 may also be different.

[0064] When filling the shock-absorbing filler, the sealing area 4 may be injected after the first protective film 2 and the second protective film 3 are joined; or the shock-absorbing filler may be frozen and solidified before the first protective film 2 and the second protective film 3 are joined, and then filled into the sealing area 4; or the shock-absorbing filler may be placed in the sealing area 4 of the second protective film 3, and then the first protective film 2 is joined to the second protective film 3 to form a sealed sealing area 4. Alternatively, other suitable methods may be used for filling the shock-absorbing filler.

[0065] In order to better understand the technical concept of the present invention, a relatively comprehensive description is given below in combination with the technical features.

[0066] like Figures 3 to 15 As shown, a preferred embodiment of the utility model provides a shock-absorbing protective film, including a protective film body 1, the protective film body 1 includes a first protective film 2 and a second protective film 3, the first protective film 2 and the second protective film 3 are connected up and down to form a plurality of closed areas 4, and the closed areas 4 are filled with shock-absorbing fillers. The protective film body 1 can be a tough waterproof protective film, an elastic waterproof protective film or a multi-layer composite protective film. The shock-absorbing filler is a non-Newtonian fluid filler, or a part of the non-Newtonian fluid material can be filled, and at the same time, the gas is filled, and the volume of the gas is less than or equal to the volume of the non-Newtonian fluid filler, that is, the volume of the gas part should be ≤50%. The closed area 4 can be a cylinder, a sphere, a hemisphere, an elliptical cylinder, an ellipsoid or a semi-ellipsoid. Each closed area 4 can be arranged in multiple rows in a row and column arrangement, and in each closed area 4 of adjacent rows, the adjacent closed areas 4 are arranged one by one, or, in each closed area 4 of adjacent rows, the adjacent closed areas 4 are arranged in a staggered manner.

[0067] Compared with the prior art, the closed area 4 is a protruding structure, and the closed area 4 is filled with non-Newtonian fluid materials. The closed area 4 is in direct contact with the outside, and can respond to external collisions faster and more timely, and has a fast impact resistance response. The shock-absorbing protective film of the utility model has a simple structure, a large proportion of shock-absorbing fillers, and good impact resistance and shock absorption effects. The shape of the closed area 4 can be circular or elliptical, and the effect of dispersing the force is good. When the shock-absorbing protective film of the utility model is encapsulated in the first guard plate 5 and the second guard plate 6, the ability of the guard plate to resist impact can be improved. In the impact resistance and shock absorption structure composed of the first guard plate 5, the closed area 4 and the second guard plate 6, the gap 7 has multiple uses and good expandability.

[0068] The present utility model also provides a battery pack, which is provided with the battery pack protective plate of each of the above embodiments. Figure 6 , Fig.10 and Fig.14 As shown, a battery pack protective plate is arranged on the surface of the battery pack 8 to protect the battery pack. Figure 6 An embodiment in which the closed area 4 is a cylinder is shown. Fig.10 An embodiment in which the closed area 4 is a sphere is shown. Fig.14 An embodiment in which the closed area 4 is a hemispherical body is shown.

[0069] The embodiment of the utility model further provides an electrical device provided with the battery pack of the above embodiment.

[0070] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A shock-absorbing protective film, characterized in that: The protective film body (1) comprises a first protective film (2) and a second protective film (3), wherein the first protective film (2) and the second protective film (3) are connected up and down to form a plurality of closed areas (4), and the closed areas (4) are filled with shock-absorbing fillers.

2. The shock-absorbing protective film according to claim 1, characterized in that: The closed area (4) is a cylinder, a sphere, a hemisphere, an ellipsoid, an ellipsoid or a semi-ellipsoid.

3. The shock-absorbing protective film according to claim 1, characterized in that: The closed areas (4) are arranged in multiple rows, and the closed areas (4) in adjacent rows are aligned one by one.

4. The shock-absorbing protective film according to claim 1, characterized in that: The enclosed areas (4) are arranged in multiple rows, and the enclosed areas (4) in adjacent rows are arranged in a staggered manner.

5. The shock-absorbing protective film according to claim 1, characterized in that: The protective film body (1) is a tough waterproof protective film, an elastic waterproof protective film or a multi-layer composite protective film.

6. The shock-absorbing protective film according to any one of claims 1 to 5, characterized in that: The shock-absorbing filler is a non-Newtonian fluid filler.

7. The shock-absorbing protective film according to any one of claims 1 to 5, characterized in that: The shock-absorbing filler includes a non-Newtonian fluid filler and a gas, and the volume of the gas is less than or equal to the volume of the non-Newtonian fluid filler.

8. A battery pack protective plate, characterized in that: It comprises a first guard plate (5), a second guard plate (6) and the shock-absorbing protective film according to any one of claims 1 to 7, wherein at least one layer of the shock-absorbing protective film is arranged between the first guard plate (5) and the second guard plate (6).

9. The battery pack protective plate according to claim 8, characterized in that: A gap (7) is formed between adjacent closed areas.

10. The battery pack protective plate according to claim 9, characterized in that: The gap (7) is filled with impact-resistant filler, heat-conductive filler or heat-absorbing filler.

11. The battery pack protective plate according to any one of claims 8 to 10, characterized in that: The closed areas (4) of the shock-absorbing protective films of adjacent layers are arranged in a staggered manner.

12. A battery pack, characterized in that: A battery pack guard plate according to any one of claims 8 to 11 is provided.

13. An electrical equipment, characterized in that: A battery pack according to claim 12 is provided.

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